WO2025087331A1 - 用于可活动的座椅单元的机械伸展装置及座椅单元 - Google Patents

用于可活动的座椅单元的机械伸展装置及座椅单元 Download PDF

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Publication number
WO2025087331A1
WO2025087331A1 PCT/CN2024/127047 CN2024127047W WO2025087331A1 WO 2025087331 A1 WO2025087331 A1 WO 2025087331A1 CN 2024127047 W CN2024127047 W CN 2024127047W WO 2025087331 A1 WO2025087331 A1 WO 2025087331A1
Authority
WO
WIPO (PCT)
Prior art keywords
backrest
footrest
link
assembly
seat
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/127047
Other languages
English (en)
French (fr)
Inventor
雷晓春
李晓鸿
李元坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Remacro Technology Co Ltd
Original Assignee
Remacro Technology Co Ltd
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 CN202322904449.8U external-priority patent/CN221012563U/zh
Priority claimed from CN202322921168.3U external-priority patent/CN221129340U/zh
Application filed by Remacro Technology Co Ltd filed Critical Remacro Technology Co Ltd
Priority to JP2025507147A priority Critical patent/JP2025536503A/ja
Priority to KR1020257005474A priority patent/KR20250034170A/ko
Priority to EP24837280.7A priority patent/EP4570128A4/en
Priority to AU2024287295A priority patent/AU2024287295A1/en
Priority to US19/026,632 priority patent/US20250151908A1/en
Publication of WO2025087331A1 publication Critical patent/WO2025087331A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/50—Supports for the feet or the legs

Definitions

  • the present application relates to a mechanical extension device for a movable seating unit and a seating unit comprising the mechanical extension device.
  • movable seat units such as sofas or seats with multi-position conversion functions.
  • movable seat units are usually equipped with a mechanical extension device, which can be transformed between a sitting position, a TV position (or a leisure position) and a lying position.
  • a mechanical extension device which can be transformed between a sitting position, a TV position (or a leisure position) and a lying position.
  • the footrest When the seat unit is transformed from a leisure position to a lying position, the footrest is further forward and upward than the leisure position, and the backrest is significantly tilted back, so that the legs of the user of the seat unit are higher than the head when in a lying position, and the user experiences the so-called "zero gravity" feeling.
  • a disadvantage of the known design is that, as the seat unit is transformed into a lying position, a gap appears between the backrest and the seat, which on the one hand pulls the user's top upwards and on the other hand causes the risk of objects falling through the gap.
  • the technical problem to be solved by the present application is to provide a seat unit with a simple structure and better conformity to ergonomics.
  • a mechanical extension device for a movable seat unit comprising:
  • a seat assembly including a base assembly, side panels attached to a seat of the seating unit, a central linkage coupled between the base assembly and the side panels;
  • a backrest assembly pivotally connected to the rear portion of the side panel, comprising a backrest connector for attaching a backrest of the seat unit and a backrest link assembly pivotally connected to the backrest connector, the backrest link assembly comprising a first backrest link hinged to the central link and a second backrest link hinged to the side panel, wherein the first backrest link is hinged to the second backrest link;
  • a leg extension device pivotally connected to the front portion of the side panel, comprising a plurality of links pivotally connected to one another, a first footrest for attaching a footstool;
  • the mechanical extension device enables the seat unit to be transformed between a sitting position, a TV position and/or a lying position, wherein in the sitting position, the first footrest is folded under the seat; in the TV position, the first footrest is extended forward; in the lying position, the backrest is tilted backward, the highest point of the footrest is higher than the highest point of the backrest, and the first footrest extends forward and upward.
  • the backrest is tilted backward by at least 35° in the lying position compared to the sitting position, and in some embodiments, at least 40° in the sitting position, thereby providing a more comfortable zero-gravity experience to the user.
  • the first footrest in the lying position, is raised with its front end so that the footrest surface of the first footrest forms an acute angle between 10° and 23° with the horizontal plane and is open forward. In some embodiments, the footrest surface of the first footrest forms an acute angle between 16° and 19° with the horizontal plane and is open forward.
  • the acute angle of "opening forward” mentioned here refers to the direction in which the opening of the acute angle is facing the leg stretching device.
  • the leg extension device also includes a second footrest, and in the sitting position, the first footrest and the second footrest are both folded under the seat; in the TV position, the first footrest and the second footrest are extended forward; in the lying position, the backrest is tilted backward, and the highest point of the footstool is higher than the highest point of the backrest, wherein the first footrest and the second footrest both extend forward and upward, and wherein the second footrest is located in front of the first footrest.
  • the second footrest in the lying position, is raised with its front end so that the footrest surface of the second footrest forms an acute angle of between 10° and 23° with the horizontal plane, opening forward. In some embodiments, the footrest surface of the second footrest forms an acute angle of between 12° and 15° with the horizontal plane, opening forward.
  • the second footrest hangs down with its front end so that the footrest surface of the second footrest forms an acute angle of between 8° and 30° with the horizontal plane, opening backwards.
  • the footrest surface of the second footrest forms an angle of between 12° and 20° with the horizontal plane.
  • the acute angle “opening rearward” mentioned here refers to the direction in which the opening of the acute angle is facing the backrest component.
  • first footrest member and the second footrest member are connected via a footrest extension assembly
  • the footrest extension assembly includes a first extension member and a second extension member that are hinged to each other.
  • one end of the first extension member is hinged to the second footrest at the distal end
  • the other end of the second extension member is hinged to one end of the second extension member
  • the other end of the second extension member is hinged to the leg connecting rod connected to the first footrest at the proximal end.
  • the backrest connector is coupled to the seat assembly through the backrest link assembly.
  • the backrest link assembly Through the scissor structure of the backrest link assembly, the backrest link assembly itself is compressed while the backrest connector is compressed. This eliminates the gap that may appear between the backrest and the seat during the posture change of the seat unit. This not only realizes a true "zero wall” structure, saves installation space, eliminates the risk of items falling due to the gap, but also avoids pulling out the user's top, achieving a "zero back rubbing" comfortable experience.
  • the backrest link assembly also includes a third backrest link, a fourth backrest link and a fifth backrest link, wherein the lower end of the third backrest link is hinged to the second backrest link, the upper end of the third backrest link is hinged to the rear end of the backrest connector, the upper end of the fourth backrest link is hinged to the front end of the backrest connector at a first pivot point, the front end of the fifth backrest link is hinged to the first backrest link at a second pivot point, the rear end of the fifth backrest link is hinged to the middle part of the third backrest link, and the lower end of the fourth backrest link is hinged to the middle part of the fifth backrest link.
  • the back connection member is tilted rearwardly by compression of the back link assembly during transformation of the seating unit from the sitting position to the reclining position.
  • the relative movement between the side panel and the central link increases the distance between the hinge point of the first backrest link and the central link and the hinge point of the second backrest link and the side panel, thereby achieving compression of the backrest link assembly.
  • both the first pivot point and the second pivot point move forward, wherein a distance between the first pivot point and the second pivot point decreases.
  • the seat assembly further includes a front swing bar, a rear swing bar, a seat linkage, and a side plate linkage, wherein: The lower ends of the front swing link and the rear swing link are pivotally connected to the base assembly respectively, and the upper ends of the front swing link and the rear swing link are connected to the side plate through a central link, a seat link and a side plate link.
  • the seat unit is transformed between the sitting position and the lying position by swinging the side panels relative to the base assembly to cause the backrest assembly and the leg extension device to move relative to the seat assembly.
  • the mechanical extension device further includes an electric drive device coupled between the base assembly and the side plate.
  • an electric drive device which includes a first electric drive and a second electric drive, wherein the first electric drive is designed to cause the leg extension device to extend and retract relative to the seat assembly, and the second electric drive is designed to cause the backrest assembly to move relative to the seat assembly.
  • the first electric drive and the second electric drive operate independently of each other, so that the backrest component and the leg extension device can be flexibly adjusted independently of each other.
  • the mechanical extension device can be changed between a plurality of positions, for example, between a sitting position, a TV position and/or a lying position.
  • a sitting position the footrest is folded under the seat; in the TV position, the footrest is extended forward; in the lying position, the backrest is tilted backward, and the highest point of the footrest is higher than the highest point of the backrest.
  • the mechanical extension device is not limited to the three posture positions of the sitting position, the TV position and the lying position, but can also show intermediate positions between these three posture positions through different positions of the backrest and the leg extension device, for example, the backrest is tilted backward relative to the seat component only by the second electric drive, while the first electric drive does not work, so that the footrest is still folded under the seat.
  • the leg extension device further comprises a second footrest, wherein when the first electric drive causes the leg extension device to extend to the front of the seat assembly, the second footrest is located in front of the first footrest.
  • the backrest connector is coupled to the seat assembly through the backrest link assembly.
  • the backrest link assembly Through the scissor structure of the backrest link assembly, the backrest link assembly itself is compressed while the backrest connector is compressed. This eliminates the gap that may appear between the backrest and the seat during the posture change of the seat unit. This not only realizes a true "zero wall” structure, saves installation space, eliminates the risk of items falling due to the gap, but also avoids pulling out the user's top, achieving a "zero back rubbing" comfortable experience.
  • the first electric actuator acts between the seat assembly and the leg extension device, and the second electric actuator acts between the base assembly and the seat assembly.
  • the base assembly includes a base rear cross beam
  • the leg extension device includes a first motor cross bar
  • the seat assembly includes a second motor cross bar near the leg extension device and a third motor cross bar near the backrest assembly, wherein the first electric drive acts between the first motor cross bar and the second motor cross bar, and the second electric drive acts between the third motor cross bar and the base rear cross beam.
  • the second motor cross bar is connected to the side plate, and the third motor cross bar is connected to the central linkage. In some embodiments, the second motor cross bar is fixedly connected to the side plate, and the third motor cross bar is fixedly connected to the central linkage.
  • only one side panel motor cross bar may be provided on the side panel of the seat assembly instead of the second motor cross bar and the third motor cross bar.
  • one end of the first electric drive is coupled to the first motor cross bar, and the other end is coupled to the side panel motor cross bar;
  • one end of the second electric drive is coupled to the rear cross beam of the base, and the other end is also coupled to the side panel motor cross bar.
  • the backrest link assembly further includes a third backrest link, a fourth backrest link and a fifth backrest link, wherein the lower end of the third backrest link is hinged to the second backrest link, and the upper end of the third backrest link is hinged to the backrest connector.
  • the rear end is hinged, the upper end of the fourth backrest link is hinged to the front end of the backrest connecting member at a first pivot point, the front end of the fifth backrest link is hinged to the first backrest link at a second pivot point, the rear end of the fifth backrest link is hinged to the middle part of the third backrest link, and the lower end of the fourth backrest link is hinged to the middle part of the fifth backrest link.
  • the back connection member when the back assembly is moved relative to the seat assembly by the second electric drive, the back connection member is tilted rearward by compression of the back link assembly.
  • the relative movement between the side panel and the central link increases the distance between the hinge point of the first backrest link and the central link and the hinge point of the second backrest link and the side panel, thereby achieving compression of the backrest link assembly.
  • both the first pivot point and the second pivot point move forward, wherein a distance between the first pivot point and the second pivot point decreases.
  • the seat assembly further includes a front swing arm, a rear swing arm, a seat linkage, a side panel linkage and a driving link, wherein the lower ends of the front swing arm and the rear swing arm are respectively pivotally connected to the base assembly, and the upper ends of the front swing arm and the rear swing arm are connected to the side panels via a central linkage, a seat linkage and a side panel linkage, the upper end of the driving link is hinged to the middle part of the seat linkage, and the lower end of the driving link is hinged to the base assembly.
  • movement of the back assembly relative to the seat assembly is facilitated by rocking movement of the side panels relative to the base assembly.
  • the first electric drive and the second electric drive are designed as linear electric drives.
  • the present application also provides a seating unit, comprising: a seat, a backrest, a footrest and the mechanical extension device as described above, wherein the side panel is attached to the seat, the backrest connector is attached to the backrest, and the first footrest is attached to the footrest.
  • FIG1 is a perspective view of a mechanical extension device according to a first embodiment of the present application, which is in a sitting position;
  • FIG2 is a perspective view of the mechanical extension device shown in FIG1 , in a TV posture position;
  • FIG3 is a perspective view of the mechanical extension device shown in FIG1 , in a lying position;
  • FIG4 is a side view of the mechanical stretching device shown in FIG1;
  • FIG5 is a side view of the mechanical extension device shown in FIG1 in the TV posture position
  • FIG6 is a side view of the mechanical extension device shown in FIG1 in a lying position
  • FIG. 7 is a perspective view of a mechanical extension device according to a second alternative embodiment of the present application, which is in a sitting position;
  • FIG8 is a perspective view of the mechanical extension device shown in FIG7, which is in the TV posture position;
  • Fig. 9 is a perspective view of the mechanical extension device shown in Fig. 7, in a lying position;
  • FIG10 is a side view of the mechanical stretching device shown in FIG7;
  • FIG11 is a side view of the mechanical stretching device shown in FIG10 from another angle;
  • FIG. 12 is a mechanical extension device of a first improved alternative embodiment shown in FIG. 7, which is in the TV posture position;
  • FIG13 is a side view of the mechanical extension device shown in FIG12 in a lying position
  • FIG. 14 is a mechanical extension device of a second modification of the alternative embodiment shown in FIG. 7 , which is in the TV posture position;
  • FIG15 is a side view of the mechanical extension device shown in FIG14, in a lying position
  • 16 is a perspective view of a mechanical extension device according to a third alternative embodiment of the present application, which is in a sitting position;
  • FIG17 is a perspective view of the mechanical extension device shown in FIG16, which is in the TV posture position;
  • Fig. 18 is a perspective view of the mechanical extension device shown in Fig. 16, in a lying position;
  • Fig. 19 is a side view of the mechanical extension device shown in Fig. 16;
  • FIG20 is a side view of the mechanical extension device shown in FIG19, which is in the TV posture position;
  • Fig. 21 is a side view of the mechanical extension device shown in Fig. 19, in a lying position;
  • FIG. 22 is a perspective view of a mechanical extension device according to a fourth alternative embodiment of the present application, which is in a sitting position;
  • FIG23 is a perspective view of the mechanical extension device shown in FIG22, which is in the TV posture position;
  • Fig. 24 is a perspective view of the mechanical extension device shown in Fig. 22, in a lying position;
  • Fig. 25 is a side view of the mechanical extension device shown in Fig. 22;
  • FIG26 is a side view of the mechanical extension device shown in FIG25 from another angle;
  • FIG27 is a side view of the mechanical extension device shown in FIG26, which is in the TV posture position;
  • FIG. 28 is a side view of the mechanical extension device shown in FIG. 26 in a lying position.
  • FIGS. 1 to 6 a first embodiment of a mechanical extension device for a movable seat unit is schematically shown according to FIGS. 1 to 6 .
  • the mechanical extension device includes a seat assembly 1, a backrest assembly 2 and a leg extension device 3.
  • the backrest assembly 2 is hinged to the rear of the seat assembly 1, and the leg extension device 3 is hinged to the front of the seat assembly 1.
  • the seat assembly 1 is attached to the seat of the chair unit, the backrest assembly 2 is attached to the backrest of the chair unit, and the leg extension device 3 is attached to the footrest of the chair unit.
  • the chair unit or its mechanical extension device can be transformed between a sitting position, a TV position and/or a lying position.
  • the backrest In the sitting position, the backrest is upright and the footrest is folded under the seat; in the TV position, the backrest does not tilt backward significantly, and the footrest moves upward and forward to the front of the seat as the leg extension device is extended; in the lying position, the footrest remains extended to the front of the seat, while the backrest tilts backward significantly.
  • the seat assembly 1 includes a base assembly 11, a front swing bar 12, a rear swing bar 13, and a side panel 140 attached to the seat of the seat unit.
  • the mechanical extension device is used for a floor-standing iron frame seat unit
  • the base assembly 11 directly supports the mechanical extension device on the bottom surface, and includes two mirror-symmetrical base longitudinal beams 111 arranged on the left and right sides, and a base front cross beam 112 and a base rear cross beam 113 connecting the two base longitudinal beams 111.
  • the base assembly 11 may also indirectly support the mechanical extension device above the bottom surface, for example, the base assembly 11 may be rotatably mounted on a rotating base, or the base assembly 11 may be fixedly coupled to the armrest portion of the floor-standing armrest seat unit.
  • the front swing bar 112 is hinged at its lower end to the front end of the base longitudinal beam 111
  • the rear swing bar 113 is hinged at its lower end to the rear end of the base longitudinal beam 111.
  • the side plate 140 can move relative to the base assembly 11.
  • the seat assembly 1 further includes a central linking member 15, a seat linking member 16 and a side plate linking member 17, wherein the central linking member 15 is provided with a plurality of pivot points, and the central linking member 15 is hinged to the backrest assembly 2, the side plate 140, the seat linking member 16 and the rear swing bar 13 at the different pivot points.
  • One end of the seat linking member 16 is connected to the front swing bar 12 through the side plate linkage member 17, and the other end of the seat linking member 16 is connected to the central linking member 15.
  • the swinging of the front swing bar 12 and the rear swing bar 13 can drive the movement of the side plate 140 relative to the base assembly 11, thereby driving the movement of the backrest assembly 2.
  • the backrest assembly 2 includes a backrest connector 20 attached to the backrest and a backrest link assembly pivotally connected to the backrest connector 20, the backrest link assembly including a first backrest link 21, a second backrest link 22, a third backrest link 23, a fourth backrest link 24 and a fifth backrest link 25.
  • One end of the first backrest link 21 is hinged to the central link 15, and one end of the second backrest link 22 is hinged to the rear end of the side plate 140, wherein the first backrest link 21 is hinged to the second backrest link 22.
  • the other end of the second backrest link 22 is hinged to the lower end of the third backrest link 23, and the upper end of the third backrest link 23 is hinged to the rear end of the backrest connector 20.
  • the upper end of the fourth backrest link 24 is hinged to the front end of the backrest connecting member 20 at the first pivot point P1
  • the front end of the fifth backrest link 25 is hinged to the other end of the first backrest link 21 at the second pivot point P2
  • the rear end of the fifth backrest link 25 is hinged to the middle part of the third backrest link 23
  • the lower end of the fourth backrest link 24 is hinged to the middle part of the fifth backrest link 25.
  • the leg extension device 3 is composed of a plurality of connecting rods pivotally connected to each other, wherein the rear end of the first leg connecting rod 31 is hinged to the side panel 140, the front end of the first leg connecting rod 31 is hinged to the rear end of the second leg connecting rod 32, the rear end of the third leg connecting rod 33 is hinged to the front end of the side panel 140, the front end of the third leg connecting rod 33 is hinged to the rear end of the fourth leg connecting rod 34, and the front ends of the second leg connecting rod 32 and the fourth leg connecting rod 34 are hinged to the first footrest 35 respectively.
  • the mechanical extension device further includes a first transmission member 18 and a second transmission member 19 which are pivotally connected to each other, one end of the first transmission member 18 is hinged to one end of the second transmission member 19, the other end of the first transmission member 18 is hinged to the side plate 140, and the other end of the second transmission member 19 is hinged to the leg extension device 3, especially to the first leg connecting rod 31. Therefore, when the side plate 140 of the seat assembly 1 moves relative to the base assembly 11, the leg extension device 3 is driven to contract and extend.
  • the electric drive device 4 is designed to enable the mechanical extension device of the seat unit to change between the sitting position, the TV position and the lying position.
  • the electric drive device 4 includes a motor head 41, a motor slide rail 42 fixedly connected to the motor head 41, a motor slider 43 that can slide along the motor slide rail 42 relative to the motor head 41, and a motor connecting rod 44.
  • the motor head 41 is fixedly mounted on the rear cross beam 113 of the base, and one end of the motor connecting rod 44 is hinged to the motor slider 43, and the other end is hinged to the motor cross bar 40.
  • the first footrest 35 is folded under the seat. If the seat unit is changed from the sitting position shown in Figure 4 to the TV position shown in Figure 5, the first leg link 31 and the third leg link 33 are rotated driven by the side panel 140. In this process, the second leg link 32 and the fourth leg link 34 drive the first footrest 35 to rotate upward.
  • the seat unit is changed from the TV position shown in Figure 5 to the lying position shown in Figure 6, the first footrest 35 rises, and the footrest surface of the first footrest 35 forms an acute angle ⁇ that opens forward relative to the horizontal plane. In this embodiment, the acute angle ⁇ is 16° to 19°, and in some embodiments, it is 17°.
  • the mechanical extension device further includes a first linkage 141, a second linkage 142 and a third linkage 143.
  • the middle portion of the second linkage 142 is rotatably connected to the side plate 140, one end of the second linkage 142 is connected to one end of the first linkage 141, the other end of the first linkage 141 is connected to the front swing bar 12, the other end of the second linkage 142 is connected to one end of the third linkage 143, and the other end of the third linkage 143 is pivotally connected to the first leg link 31 of the leg extension device 3.
  • the backrest connecting member 20 of the backrest assembly 2 stands upright and is aligned with the backrest.
  • the backrest to which the back connector 20 is attached makes an angle ⁇ with the horizontal plane.
  • the electric drive device 4 operates, so that the motor slider 43 slides along the motor slide rail 42 toward the motor head 41, so that the distance between the motor head 41 and the motor slider 43 is reduced.
  • the motor slider 43 moves the side plate 140 forward, that is, toward the direction of the leg stretching device 3, through the motor connecting rod 44, and the front swing rod 12 and the rear swing rod 13 swing forward accordingly.
  • the first linkage 141 moves forward with the front swing rod 12, and uses the second linkage 142 and the third linkage 143 to push the first leg connecting rod 31; and then the leg stretching device 3 is unfolded.
  • the side plate linkage 17 and the seat linkage 16 also move forward with the front swing rod 12, and drive the central linkage 15 to move forward.
  • the central link 15 moves forward together with the side panel 140, and then uses the first backrest link 21 and the second backrest link 22 to drive the backrest assembly 2 to move forward and downward as a whole, while the backrest connecting member 20 does not tilt significantly, wherein the first pivot point P1 and the second pivot point P2 both move downward and forward.
  • the electric drive device 4 continues to operate, so that the motor slider 43 slides further toward the motor head 41 along the motor slide rail 42, so that the distance between the motor head 41 and the motor slider 43 is further reduced.
  • the motor slider 43 moves the side plate 140 further forward, that is, toward the direction of the leg stretching device 3, through the motor connecting rod 44, and the front swing rod 12 and the rear swing rod 13 swing forward with a larger amplitude.
  • the side plate 140 moves forward significantly relative to the central link 15, so that the distance between the hinge point of the central link 15 and the first backrest connecting rod 21 and the hinge point of the side plate 140 and the second backrest connecting rod 22 increases, so that the backrest connecting rod assembly itself is compressed while moving forward, and the backrest connecting member 20 tilts backward sharply.
  • the backrest connection 20 is attached to the backrest of the seat unit, and during the process of the seat unit changing from the sitting position to the lying position, the angle ⁇ between the backrest and the horizontal plane increases by at least 40°.
  • Figures 7 to 15 show a second alternative embodiment of the present invention, wherein Figures 12 and 13 show side views of the TV posture and lying position of the first improved scheme, and Figures 14 and 15 show side views of the TV posture and lying position of the second improved scheme.
  • the leg extension device 3 of the second alternative embodiment further includes a second footrest 37.
  • the leg extension device 3 is composed of a plurality of connecting rods pivotally connected to each other, wherein the rear end of the first leg connecting rod 31 is hinged to the side plate 140, the front end of the first leg connecting rod 31 is hinged to the rear end of the second leg connecting rod 32, the rear end of the third leg connecting rod 33 is hinged to the front end of the side plate 140, the front end of the third leg connecting rod 33 is hinged to the rear end of the fourth leg connecting rod 34, the front ends of the second leg connecting rod 32 and the fourth leg connecting rod 34 are hinged to the first footrest 35 respectively, and the front end of the fourth leg connecting rod 34 is hinged to the second footrest 37.
  • the first footrest 35 is hinged to one end of the connecting rod 36, and the other end of the connecting rod 36 is hinged to the middle of the fourth leg connecting rod 34.
  • the leg extension device 3 also includes a footrest extension assembly 38, which includes a first extension member 381 and a second extension member 382, one end of the first extension member 381 is hinged to the middle part of the second footrest member 37, the other end of the first extension member 381 is hinged to one end of the second extension member 382, the other end of the second extension member 382 is hinged to the middle part of the second leg link 32, and the middle part of the second extension member 382 is hinged to the middle part of the fourth leg link 34.
  • a footrest extension assembly 38 which includes a first extension member 381 and a second extension member 382, one end of the first extension member 381 is hinged to the middle part of the second footrest member 37, the other end of the first extension member 381 is hinged to one end of the second extension member 382, the other end of the second extension member 382 is hinged to the middle part of the second leg link 32, and the middle part of the second extension member 382 is hinged to the middle part of the fourth leg link 34.
  • the first footrest 35 is hinged to the fourth leg connecting rod 34 through the connecting rod 36, the fourth leg connecting rod is connected to the second footrest, and the first footrest 35 and the fourth leg connecting rod are not connected, thereby increasing the movement flexibility of the first footrest and the second footrest during contraction or extension.
  • 382 and the second leg link 32 form a five-link mechanism, and the first footrest can be more flexibly moved closer to or separated from the second footrest, thereby increasing the distance between the first footrest and the second footrest after separation and increasing the extension length of the second footrest.
  • the footrest surfaces of the first footrest 35 and the second footrest 37 are in the same plane, and the first footrest 35 and the second footrest 37 are folded under the seat, and the first footrest 35 is located above the second footrest 37. If the seat unit is changed from the sitting position shown in FIG11 to the lying position shown in FIG13, the front end of the second footrest 37 rises, and the footrest surface of the second footrest 37 forms an acute angle ⁇ with respect to the horizontal plane, which is open forward.
  • the acute angle ⁇ is 12° to 15°, and in some embodiments, it is 13°.
  • the first leg link 31 and the third leg link 33 rotate under the drive of the side plate 140, so that the footrest extension assembly 38 moves from the retracted position shown in FIG. 11 to the extreme position shown in FIG. 14.
  • the second leg link 32 drives the first footrest 35 to rotate upward, and the linkage rod 36 rotates with the first footrest 35, so that the first footrest 35 can rotate more flexibly while supporting the first footrest 35.
  • the fourth leg link 34 drives the second footrest 37 and the footrest extension assembly 38 to extend forward and rotate upward until the second footrest 37 is extended to the extreme position.
  • the footrest extension assembly 38 When the footrest extension assembly 38 is extended to the extreme position shown in FIG. 14, the footrest surface of the first footrest 35 is in a substantially horizontal position, while the footrest surface of the second footrest 37 is tilted downward with its front end.
  • the second footrest 37 In the lying position shown in FIG. 15 , in some embodiments, the second footrest 37 is drooped with its front end, and its footrest surface forms an acute angle ⁇ with the horizontal plane, which is open backwards.
  • the acute angle ⁇ is 12° to 20°, and in some embodiments, it is 15°.
  • the user can let the legs droop slightly without causing the legs to be uncomfortably excessively tilted.
  • FIGS. 16 to 21 A third alternative embodiment of a mechanical extension device for a movable seat unit is schematically shown according to FIGS. 16 to 21 .
  • the mechanical extension device comprises a base assembly 11, a seat assembly 1, a backrest assembly 2 and a leg extension device 3.
  • the backrest assembly 2 is hinged to the rear of the seat assembly 1
  • the leg extension device 3 is hinged to the front of the seat assembly 1.
  • the seat assembly 1 is attached to the seat of the chair unit
  • the backrest assembly 2 is attached to the backrest of the chair unit
  • the leg extension device 3 is attached to the footrest of the chair unit.
  • the chair unit or its mechanical extension device can be transformed between a sitting position, a TV position and/or a lying position.
  • the backrest In the sitting position, the backrest is upright and the footrest is folded under the seat; in the TV position, the backrest does not tilt backward significantly, and the footrest moves upward and forward to the front of the seat as the leg extension device is extended; in the lying position, the footrest remains extended to the front of the seat, while the backrest tilts backward significantly.
  • the mechanical extension device is used for a floor-standing iron frame seat unit
  • the base assembly 11 directly supports the mechanical extension device on the bottom surface, and includes two mirror-symmetrical base longitudinal beams 111 arranged on the left and right sides, and a base front cross beam 112 and a base rear cross beam 113 connecting the two base longitudinal beams 111.
  • the base assembly 11 can also indirectly support the mechanical extension device above the bottom surface, for example, the base assembly 11 is rotatably mounted on a rotating base, or the base assembly 11 is fixedly coupled to the armrest portion of the floor-standing armrest seat unit.
  • the seat assembly 1 comprises a front swing bar 12, a rear swing bar 13, and a side plate 140 attached to the seat of the seat unit.
  • the front swing bar 112 is hinged to the front end of the base longitudinal beam 111 at its lower end
  • the rear swing bar 113 is hinged to the rear end of the base longitudinal beam 111 at its lower end.
  • the seat assembly 1 further includes a central linkage 15, a seat linkage 16 and a side plate linkage 17, wherein the central linkage 15 is provided with a plurality of pivot points.
  • the movable member 15 is respectively hinged to the back assembly 2, the side plate 140, the seat linking member 16 and the rear swing rod 13 at the different pivot points.
  • One end of the seat linking member 16 is connected to the front swing rod 12 through the side plate linkage member 17, and the other end of the seat linking member 16 is connected to the central linking member 15.
  • the swinging of the front swing rod 12 and the rear swing rod 13 can drive the side plate 140 to move relative to the base assembly 11, thereby driving the movement of the backrest assembly 2.
  • the back assembly 2 includes a backrest connector 20 attached to the backrest and a backrest link assembly pivotally connected to the backrest connector 20, the backrest link assembly including a first backrest link 21, a second backrest link 22, a third backrest link 23, a fourth backrest link 24 and a fifth backrest link 25.
  • One end of the first backrest link 21 is hinged to the central link 15, and one end of the second backrest link 22 is hinged to the rear end of the side plate 140, wherein the first backrest link 21 is hinged to the second backrest link 22.
  • the other end of the second backrest link 22 is hinged to the lower end of the third backrest link 23, and the upper end of the third backrest link 23 is hinged to the rear end of the backrest connector 20.
  • the upper end of the fourth backrest link 24 is hinged to the front end of the backrest connecting member 20 at the first pivot point P1
  • the front end of the fifth backrest link 25 is hinged to the other end of the first backrest link 21 at the second pivot point P2
  • the rear end of the fifth backrest link 25 is hinged to the middle part of the third backrest link 23
  • the lower end of the fourth backrest link 24 is hinged to the middle part of the fifth backrest link 25.
  • the leg extension device 3 is composed of a plurality of links pivotally connected to each other, wherein a rear end of the first leg link 31 is hinged to the side panel 140, a front end of the first leg link 31 is hinged to a rear end of the second leg link 32, a rear end of the third leg link 33 is hinged to a front end of the side panel 140, a front end of the third leg link 33 is hinged to a rear end of the fourth leg link 34, and a front end of the second leg link 32 and a front end of the fourth leg link 34 are respectively hinged to the first footrest 35.
  • the mechanical stretching device also includes a first transmission member 18 and a second transmission member 19 which are pivotally connected to each other, one end of the first transmission member 18 is hinged to one end of the second transmission member 19, the other end of the first transmission member 18 is hinged to the side plate 140, and the other end of the second transmission member 19 is hinged to the leg stretching device 3, in particular, to the first leg connecting rod 31.
  • the mechanical extension device further comprises a driving link 16a, the upper end of which is hinged to the seat link 16, and the lower end of which is hinged to the base longitudinal beam 111.
  • the upper end of the driving link 16a In the sitting position and the TV position of the mechanical extension device, the upper end of the driving link 16a is further rearward than the lower end thereof, that is, the driving link 16a is tilted backward with its upper end; and in the lying position, the upper end of the driving link 16a is further forward than the lower end thereof, that is, the driving link 16a is tilted forward with its upper end.
  • an electric drive device 4 is also provided.
  • a first motor cross bar 401 is fixedly connected to the first leg link 31 of the leg extension device 3, and a second motor cross bar 402 and a third motor cross bar 403 are provided at the seat assembly.
  • the second motor cross bar 402 is fixedly connected to the side plate 140, and the third motor cross bar 403 is fixedly connected to the central link 15.
  • the electric drive device 4 includes a first electric drive 404 coupled between the first motor cross bar 401 and the second motor cross bar 402, and a second electric drive 405 coupled between the third motor cross bar 403 and the rear cross beam 113 of the base assembly 11.
  • the first electric drive 404 and the second electric drive 405 are designed as linear electric drives, which respectively include a motor head, a motor slide rail fixedly connected to the motor head, and a motor slider that can slide relative to the motor head along the motor slide rail.
  • the distance between the motor head and the motor slide is changed by sliding the motor slide along the motor slide rail, so that the relative movement of the component coupled to the motor head with respect to the component coupled to the motor slide can be achieved through the telescopic movement of the linear electric drive.
  • the first electric drive 404 and the second electric drive 405 operate independently of each other, wherein the first electric drive 404 is designed to achieve the extension and contraction of the leg extension device 3, thereby achieving the extension and retraction of the footrest; the second electric drive 405 is designed to achieve the extension and contraction of the backrest assembly 2, thereby achieving the tilt of the backrest.
  • the seat unit can be placed in different posture positions. For example, as shown in FIG. The sitting position, the TV position shown in Figure 20 and the lying position shown in Figure 21.
  • the backrest connector 20 of the backrest assembly 2 stands upright together with the backrest attached thereto, and the first footrest 35 of the leg extension device 3 makes the footrest fold under the seat.
  • the leg extension device 3 is unfolded, and the footrest is extended to the front of the seat through the first footrest 35.
  • the backrest connector 20 is tilted sharply backward.
  • the seat unit is to be changed from the sitting position to the TV position, only the first electric drive 404 is operated, wherein the distance between the motor head and the motor slider of the first electric drive 404 is increased, thereby increasing the distance between the first motor cross bar 401 and the second motor cross bar 402, and driving the leg stretching device 3 to be unfolded relative to the side plate 140 through the first leg connecting rod 31.
  • the mechanical stretching device is changed from the sitting position shown in FIG. 19 to the TV position shown in FIG. 20.
  • the second electric drive 405 is running, the distance between the motor head of the second electric drive 405 and the motor slider increases, and the distance between the third motor cross bar 403 and the rear cross beam 113 of the base increases, so that the side plate 140 is pushed forward relative to the base assembly 11, that is, toward the direction of the leg extension device 3 by means of the central link 15, and the front swing bar 12 and the rear swing bar 13 swing forward accordingly.
  • the side plate link 17 and the seat link 16 also move forward with the front swing bar 12.
  • the driving link 16a Since the driving link 16a originally tilts backward with its upper end in the TV posture position, when the front swing link 12 and the rear swing link 13 swing forward, the driving link 16a pivots forward with its upper end, supporting the seat link 16 to move forward and upward, thereby driving the central link 15 to rotate while moving forward, so that the distance between the pivot point between the central link 15 and the first backrest link 21 and the pivot point between the side plate 140 and the second backrest link 22 increases, thereby causing the backrest link assembly to be compressed while moving forward, and the backrest connecting member 20 tilts backward sharply.
  • the seat unit can also be in other posture positions not specifically shown in the figure.
  • the backrest connection 20 tilts the backrest backwards, and the first electric drive 404 is not running, so that the leg extension device is still folded under the seat.
  • Figures 22 to 28 show a fourth alternative embodiment according to the present application.
  • the leg extension device 3 further includes a second footrest 37.
  • the leg extension device 3 is composed of a plurality of connecting rods pivotally connected to each other, wherein the rear end of the first leg connecting rod 31 is hinged to the side plate 140, the front end of the first leg connecting rod 31 is hinged to the rear end of the second leg connecting rod 32, the rear end of the third leg connecting rod 33 is hinged to the front end of the side plate 140, the front end of the third leg connecting rod 33 is hinged to the rear end of the fourth leg connecting rod 34, the front end of the second leg connecting rod 32 is hinged to the first footrest 35, and the front end of the fourth leg connecting rod 34 is hinged to the second footrest 37.
  • the first footrest 35 is hinged to one end of the connecting rod 36, and the other end of the connecting rod 36 is hinged to the middle of the fourth leg connecting rod 34.
  • the leg extension device 3 also includes a footrest extension assembly 38, which includes a first extension member 381 and a second extension member 382, one end of the first extension member 381 is hinged to the middle part of the second footrest member 37, the other end of the first extension member 381 is hinged to one end of the second extension member 382, the other end of the second extension member 382 is hinged to the middle part of the second leg link 32, and the middle part of the second extension member 382 is hinged to the middle part of the fourth leg link 34.
  • a footrest extension assembly 38 which includes a first extension member 381 and a second extension member 382, one end of the first extension member 381 is hinged to the middle part of the second footrest member 37, the other end of the first extension member 381 is hinged to one end of the second extension member 382, the other end of the second extension member 382 is hinged to the middle part of the second leg link 32, and the middle part of the second extension member 382 is hinged to the middle part of the fourth leg link 34.
  • the first footrest 35 is hinged to the fourth leg connecting rod 34 through the connecting rod 36, the fourth leg connecting rod is connected to the second footrest, and the first footrest 35 and the fourth leg connecting rod are not connected, thereby increasing the movement flexibility of the first footrest and the second footrest during contraction or extension.
  • Component 382 and the second leg link 32 form a five-bar linkage, and the first footrest can be more flexibly moved closer to or separated from the second footrest, thereby increasing the distance between the first footrest and the second footrest after separation and increasing the extension length of the second footrest.
  • 26 to 28 exemplarily show several posture positions of the mechanical stretching device of the fourth alternative embodiment.
  • the footrest surfaces of the first footrest 35 and the second footrest 37 are in the same plane, and the first footrest 35 and the second footrest 37 are folded under the seat, and the first footrest 35 is located above the second footrest 37.
  • the first footrest 35 and the second footrest 37 are both extended to the front of the seat.
  • the first footrest 35 and the second footrest 37 are still maintained in front of the seat, and the backrest connector 20 is tilted sharply backwards.
  • the first electric drive 404 starts to extend, prompting the first motor crossbar 401 to drive the first leg link 31 and the third leg link 33 to rotate forward, so that the footrest extension assembly 38 moves from the retracted position shown in FIG. 26 to the extreme position shown in FIG. 27.
  • the second leg link 32 drives the first footrest 35 to rotate upward, and the linkage rod 36 rotates with the first footrest 35, so that the first footrest 35 can rotate more flexibly while supporting the first footrest 35.
  • the fourth leg link 34 drives the second footrest 37 and the footrest extension assembly 38 to extend forward and rotate upward until the second footrest 37 is extended to the extreme position.
  • the footrest extension assembly 38 is extended to the extreme position shown in FIG. 27, the footrest surface of the second footrest 37 tilts upward with its front end.
  • the TV position shown in FIG. 27 is achieved.
  • the second electric drive 405 is operated, wherein the distance between the third motor crossbar 403 and the rear crossbar 113 of the base is increased, thereby pushing the side plate 140 forward relative to the base assembly 11, that is, in the direction of the leg extension device 3, by means of the central linkage 15, and the front swing bar 12 and the rear swing bar 13 swing forward accordingly.
  • the side plate linkage 17 and the seat linkage 16 also move forward with the front swing bar 12.
  • the driving link 16a Since the driving link 16a originally tilts backward with its upper end in the TV posture position, when the front swing link 12 and the rear swing link 13 swing forward, the driving link 16a pivots forward with its upper end, supporting the seat link 16 to move forward and upward, thereby driving the central link 15 to rotate while moving forward, so that the distance between the pivot point between the central link 15 and the first backrest link 21 and the pivot point between the side plate 140 and the second backrest link 22 increases, thereby causing the backrest link assembly to be compressed while moving forward, and the backrest connecting member 20 tilts backward sharply.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

一种用于可活动的座椅单元的机械伸展装置，包括：座部组件（1），其包括基座组件（11）、侧板（140）、中央连动件（15）；与侧板（140）的后部枢转连接的靠背组件（2）；与侧板（140）的前部枢转连接的腿部伸展装置（3），其包括第一搁脚件（35）；机械伸展装置使得座椅单元能够在坐姿位置与躺姿位置之间变换，在坐姿位置中，第一搁脚件（35）收拢在座部下方；在躺姿位置中，脚凳的最高点高于靠背的最高点，其中，第一搁脚件（35）向前且向上延伸。

Description

用于可活动的座椅单元的机械伸展装置及座椅单元 技术领域
本申请涉及一种用于可活动的座椅单元的机械伸展装置以及一种包括所述机械伸展装置的座椅单元。
背景技术
在现有技术中已知多种用于可活动的座椅单元，例如具备多位置变换功能的沙发或座椅等。随着人们生活水平的提高，对于沙发、座椅的舒适性要求也日益提高。在已知的设计中，可活动的座椅单元通常具备机械伸展装置，借此能够在坐姿位置、TV姿位置(或者说休闲位置)和躺姿位置之间变换，在所述座椅单元从坐姿位置变换至TV姿位置时，座椅单元的脚凳向前伸出，靠背与坐席部之间的角度基本不变，在所述座椅单元从休闲姿状态向躺姿状态变换时，脚凳较之休闲姿状态进一步向前且向上抬升，靠背显著后仰，从而座椅单元的使用者处于躺姿状态时腿部高于头部，体验到所谓的“零重力”感受。
然而在已知设计中的弊端在于，随着座椅单元向躺姿状态的变换，靠背部与座部之间出现缝隙，这一方面将使用者的上衣向上拉出，另一方面导致物品从缝隙掉落的风险。
发明内容
本申请所要解决的技术问题在于，提供一种结构简单、更符合人体工程力学的座椅单元。
为解决上述技术问题，本申请提供一种用于可活动的座椅单元的机械伸展装置，包括：
座部组件，其包括基座组件、与座椅单元的座部附接的侧板、耦连在基座组件与所述侧板之间的中央连动件；
与所述侧板的后部枢转连接的靠背组件，其包括用于附接座椅单元的靠背的靠背连接件和与靠背连接件枢转连接的靠背连杆组件，所述靠背连杆组件包括与所述中央连动件铰接的第一靠背连杆和与所述侧板铰接的第二靠背连杆，其中，所述第一靠背连杆与所述第二靠背连杆铰接；
与所述侧板的前部枢转连接的腿部伸展装置，其包括相互枢转连接的多个连杆、用于附接脚凳的第一搁脚件；
所述机械伸展装置使得座椅单元能够在坐姿位置、TV姿位置和/或躺姿位置之间变换，在所述坐姿位置中，第一搁脚件收拢在座部下方；在所述TV姿位置中，第一搁脚件向前伸展；在所述躺姿位置中，所述靠背向后倾斜，所述脚凳的最高点高于所述靠背的最高点，其中，第一搁脚件向前且向上延伸。
在一些实施方式中，所述靠背在躺姿位置中与在坐姿位置中相比向后倾斜至少35°，在一些实施方式中，向后倾斜至少40°。由此，给使用者带来更舒适的零重力体验。
在一种备选的实施方式中，在所述躺姿位置中，所述第一搁脚件以其前端上扬，使得第一搁脚件的搁脚面与水平面成开口向前的介于10°至23°之间的锐角，在一些实施方式中，使得第一搁脚件的搁脚面与水平面成开口向前的介于16°至19°之间的锐角。
在此要说明的是，在此所述“开口向前”的锐角是指所围成的锐角的开口朝向腿部伸展装置的方向。
在另一种备选的实施方式中，所述腿部伸展装置还包括第二搁脚件，在所述坐姿位置中，第一搁脚件和第二搁脚件均收拢在座部下方；在所述TV姿位置中，第一搁脚件和第二搁脚件向前伸展；在所述躺姿位置中，所述靠背向后倾斜，所述脚凳的最高点高于所述靠背的最高点，其中，第一搁脚件和第二搁脚件均向前且向上延伸，其中，第二搁脚件位于第一搁脚件前方。
在该备选的实施方式的第一改进方案中，在所述躺姿位置中，第二搁脚件以其前端上扬，使得第二搁脚件的搁脚面与水平面成开口向前的介于10°至23°之间的锐角，在一些实施方式中，使得第二搁脚件的搁脚面与水平面成开口向前的介于12°至15°之间的锐角。
在该备选的实施方式的第二改进方案中，在所述躺姿位置中，第二搁脚件以其前端下垂，使得第二搁脚件的搁脚面与水平面成开口向后的介于8°至30°之间的锐角，在一些实施方式中，所述第二搁脚件的搁脚面与水平面成介于12°至20°之间的角度。
在此要说明的是，在此所述“开口向后”的锐角是指所围成的锐角的开口朝向靠背组件的方向。
在一些实施方式中，所述第一搁脚件与所述第二搁脚件通过搁脚延长组件连接，所述搁脚延长组件包括相互铰接的第一延长件和第二延长件。
在该实施方式中，第一延长件的一端与远端的第二搁脚件铰接，第二延长件的另一端与第二延长件的一端铰接，第二延长件的另一端与连接近端的第一搁脚件的腿部连杆铰接，通过调整第一延长件与第二搁脚件的铰接位置，使得在所述躺姿位置中，所述第二搁脚件的前端上扬或下垂，从而使相应的搁脚面与水平面形成令使用者舒适的角度。
此外，在该实施方式中，靠背连接件通过靠背连杆组件与座部组件耦连，通过靠背连杆组件的剪式结构，靠背连接件压缩的同时，靠背连杆组件本身压缩。由此消除了在座椅单元的姿态变换过程中可能出现在靠背与座部之间的缝隙。这不仅实现了真正的“零靠墙”结构，节省了安装空间，消除因缝隙所导致的物品掉落风险，还避免将使用者的上衣拉出，实现“零搓背”的舒适体验。
在一些实施方式中，所述靠背连杆组件还包括第三靠背连杆、第四靠背连杆和第五靠背连杆，其中，所述第三靠背连杆的下端与所述第二靠背连杆铰接，第三靠背连杆的上端与所述靠背连接件的后端铰接，所述第四靠背连杆的上端与所述靠背连接件的前端在第一枢转点处铰接，所述第五靠背连杆的前端与所述第一靠背连杆在第二枢转点处铰接，所述第五靠背连杆的后端与所述第三靠背连杆的中部铰接，所述第四靠背连杆的下端与所述第五靠背连杆的中部铰接。
在一些实施方式中，在座椅单元从坐姿位置变换至躺姿位置的过程中，通过靠背连杆组件的压缩使靠背连接件向后倾斜。
在一些实施方式中，在座椅单元从坐姿位置变换至躺姿位置的过程中，所述侧板与所述中央连动件之间的相对运动使得所述第一靠背连杆和中央连动件的铰接点与所述第二靠背连杆和侧板的铰接点之间的距离增大，从而实现靠背连杆组件的压缩。
在一些实施方式中，在座椅单元从坐姿位置变换至躺姿位置的过程中，所述第一枢转点和所述第二枢转点均向前移动，其中，所述第一枢转点和所述第二枢转点之间的距离减小。
在一些实施方式中，所述座部组件还包括前摆杆、后摆杆、座部连动件和侧板连动件，其中， 所述前摆杆和后摆杆的下端分别与基座组件可枢转地连接，并且所述前摆杆和所述后摆杆的上端通过中央连动件、座部连动件和侧板连动件与侧板连接。
在一些实施方式中，通过所述侧板相对于基座组件的摆动促使靠背组件和腿部伸展装置相对于座部组件的运动，从而实现座椅单元在坐姿位置与躺姿位置之间的变换。
在一些实施方式中，所述机械伸展装置还包括耦连在基座组件与侧板之间的电驱动装置。
在一些实施方式中，还包括电驱动装置，电驱动装置包括第一电驱动器和第二电驱动器，所述第一电驱动器设计用于促使腿部伸展装置相对于座部组件的伸缩，所述第二电驱动器设计用于促使靠背组件相对于座部组件的运动。
在该实施方式中，第一电驱动器和第二电驱动器相互独立地运行，从而使靠背组件和腿部伸展装置能够相互独立地被灵活调节。
根据该实施方式，所述机械伸展装置能够在多种位置之间变换，例如在坐姿位置、TV姿位置和/或躺姿位置之间变换。在所述坐姿位置中，脚凳收拢在座部下方；在所述TV姿位置中，脚凳向前伸展；在所述躺姿位置中，所述靠背向后倾斜，所述脚凳的最高点高于所述靠背的最高点。在此要说明的是，机械伸展装置并非只能展现出坐姿位置、TV姿位置和躺姿位置这三种姿态位置，而是还能够通过靠背和腿部伸展装置的不同位置展现出这三种姿态位置之间的中间位置，例如仅通过第二电驱动器将靠背相对于座部组件向后倾斜，而第一电驱动器并不发挥作用，从而脚凳仍收拢在座部下方。
在一种备选的实施方式中，所述腿部伸展装置还包括第二搁脚件，其中，当所述第一电驱动器促使腿部伸展装置伸展至座部组件的前方时，所述第二搁脚件位于第一搁脚件前方。
此外，在该实施方式中，靠背连接件通过靠背连杆组件与座部组件耦连，通过靠背连杆组件的剪式结构，靠背连接件压缩的同时，靠背连杆组件本身压缩。由此消除了在座椅单元的姿态变换过程中可能出现在靠背与座部之间的缝隙。这不仅实现了真正的“零靠墙”结构，节省了安装空间，消除因缝隙所导致的物品掉落风险，还避免将使用者的上衣拉出，实现“零搓背”的舒适体验。
在一些实施方式中，所述第一电驱动器作用在所述座部组件与所述腿部伸展装置之间，并且所述第二电驱动器作用于所述基座组件与所述座部组件之间。
在一些实施方式中，所述基座组件包括基座后横梁，所述腿部伸展装置包括第一电机横杆，所述座部组件包括靠近腿部伸展装置的第二电机横杆和靠近靠背组件的第三电机横杆，其中，所述第一电驱动器作用于所述第一电机横杆和所述第二电机横杆之间，所述第二电驱动器作用于所述第三电机横杆与所述基座后横梁之间。
在一些实施方式中，所述第二电机横杆连接至所述侧板，所述第三电机横杆连接至所述中央连动件。在一些实施方式中，第二电机横杆与侧板固定连接，第三电机横杆与中央连动件固定连接。
然而在一种备选的实施方式中，也可以在座部组件的侧板上设置仅一个侧板电机横杆，而非第二电机横杆和第三电机横杆。在该实施方式中，第一电驱动器的一个端部与第一电机横杆耦连，另一个端部与侧板电机横杆耦连；第二电驱动器的一个端部与基座后横梁耦连，另一个端部同样也与所述侧板电机横杆耦连。
在一些实施方式中，所述靠背连杆组件还包括第三靠背连杆、第四靠背连杆和第五靠背连杆，其中，所述第三靠背连杆的下端与所述第二靠背连杆铰接，第三靠背连杆的上端与所述靠背连接件的 后端铰接，所述第四靠背连杆的上端与所述靠背连接件的前端在第一枢转点处铰接，所述第五靠背连杆的前端与所述第一靠背连杆在第二枢转点处铰接，所述第五靠背连杆的后端与所述第三靠背连杆的中部铰接，所述第四靠背连杆的下端与所述第五靠背连杆的中部铰接。
在一些实施方式中，在通过第二电驱动器使靠背组件相对于座部组件运动时，通过所述靠背连杆组件的压缩使靠背连接件向后倾斜。
在一些实施方式中，在通过第二电驱动器使靠背组件相对于座部组件运动时，所述侧板与所述中央连动件之间的相对运动使得所述第一靠背连杆和中央连动件的铰接点与所述第二靠背连杆和侧板的铰接点之间的距离增大，从而实现靠背连杆组件的压缩。
在一些实施方式中，在通过第二电驱动器使靠背组件相对于座部组件运动时，所述第一枢转点和所述第二枢转点均向前移动，其中，所述第一枢转点和所述第二枢转点之间的距离减小。
在一些实施方式中，所述座部组件还包括前摆杆、后摆杆、座部连动件、侧板连动件和驱动连杆，其中，所述前摆杆和后摆杆的下端分别与基座组件可枢转地连接，并且所述前摆杆和所述后摆杆的上端通过中央连动件、座部连动件和侧板连动件与侧板连接，所述驱动连杆的上端与所述座部连动件的中部铰接，所述驱动连杆的下端与基座组件铰接。
在一些实施方式中，通过所述侧板相对于基座组件的摆动促使靠背组件相对于座部组件的运动。
在一些实施方式中，所述第一电驱动器和所述第二电驱动器设计为线性电驱动器。
为解决上述技术问题，本申请还提供一种座椅单元，包括：座部、靠背、脚凳和如上所述的机械伸展装置，所述侧板附接所述座部，所述靠背连接件附接所述靠背，所述第一搁脚件附接所述脚凳。
附图说明
以下借助附图详细阐述本申请的实施方式。
图1是根据本申请的第一种实施方式的机械伸展装置的立体图，其处于坐姿位置中；
图2是图1所示机械伸展装置的立体图，其处于TV姿位置中；
图3是图1所示机械伸展装置的立体图，其处于躺姿位置中；
图4是图1所示机械伸展装置的侧视图；
图5是图1所示机械伸展装置的处于TV姿位置中的侧视图；
图6是图1所示机械伸展装置的处于躺姿位置中的侧视图；
图7是根据本申请的第二种备选的实施方式的机械伸展装置的立体图，其处于坐姿位置中；
图8是图7所示机械伸展装置的立体图，其处于TV姿位置中；
图9是图7所示机械伸展装置的立体图，其处于躺姿位置中；
图10是图7所示机械伸展装置的侧视图；图11是图10所示机械伸展装置的另一角度的侧视图；
图12是图7所示备选实施方式的第一改进方案的机械伸展装置，其处于TV姿位置中；
图13是图12所示机械伸展装置的处于躺姿位置中的侧视图；
图14是图7所示备选实施方式的第二改进方案的机械伸展装置，其处于TV姿位置中；
图15是图14所示机械伸展装置的侧视图，其处于躺姿位置中；
图16是根据本申请的第三种备选的实施方式的机械伸展装置的立体图，其处于坐姿位置中；
图17是图16所示机械伸展装置的立体图，其处于TV姿位置中；
图18是图16所示机械伸展装置的立体图，其处于躺姿位置中；
图19是图16所示机械伸展装置的侧视图；
图20是图19所示机械伸展装置的侧视图，其处于TV姿位置中；
图21是图19所示机械伸展装置的侧视图，其处于躺姿位置中；
图22是根据本申请的第四种备选的实施方式的机械伸展装置的立体图，其处于坐姿位置中；
图23是图22所示机械伸展装置的立体图，其处于TV姿位置中；
图24是图22所示机械伸展装置的立体图，其处于躺姿位置中；
图25是图22所示机械伸展装置的侧视图；
图26是图25所示机械伸展装置的另一角度的侧视图；
图27是图26所示机械伸展装置的侧视图，其处于TV姿位置中；
图28是图26所示机械伸展装置的侧视图，其处于躺姿位置中。
具体实施方式
首先根据图1至图6示意性地示出一种用于可活动的座椅单元的机械伸展装置的第一种实施方式。
所述机械伸展装置包括座部组件1、靠背组件2和腿部伸展装置3。靠背组件2与座部组件1的后部铰接，腿部伸展装置3与座部组件1的前部铰接。所述座部组件1与座椅单元的座部附接，靠背组件2与座椅单元的靠背附接，腿部伸展装置3与座椅单元的脚凳附接。通过座部组件1、靠背组件2与腿部伸展装置3的相对运动，座椅单元或者说其机械伸展装置能够在坐姿位置、TV姿位置和/或躺姿位置之间变换。在所述坐姿位置中，靠背竖立，脚凳收拢在座部下方；在所述TV姿位置中，靠背并不发生明显的向后倾斜，脚凳随着腿部伸展装置的伸展而向上且向前移动至座部前方；在所述躺姿位置中，脚凳保持伸展至座部前方，而靠背明显向后倾斜。
所述座部组件1包括基座组件11、前摆杆12、后摆杆13、与座椅单元的座部附接的侧板140。
在如图1所示的实施方式中，该机械伸展装置用于铁架落地式的座椅单元，基座组件11将机械伸展装置直接支撑在底面上，并包括设置在左侧和右侧的两个镜像对称的基座纵梁111和将两个基座纵梁111相连的基座前横梁112和基座后横梁113。然而在未示出的实施方式中，基座组件11也可以间接地将机械伸展装置支撑在底面上方，例如基座组件11可旋转地安装在旋转基台上，或者基座组件11位置固定地耦连至在扶手落地式座椅单元的扶手部。
在如图1所示的实施方式中，前摆杆112以其下端与基座纵梁111的前端铰接，并且后摆杆113以其下端与基座纵梁111的后端铰接。侧板140能够相对于基座组件11运动，为此，在该实施方式中，座部组件1还包括中央连动件15、座部连动件16和侧板连动件17，其中，中央连动件15设置有多个枢转点，所述中央连动件15分别以所述不同的枢转点与靠背组件2、与侧板140铰接、与座部连动件16并且与后摆杆13铰接。座部连动件16一端通过侧板联动件17与前摆杆12连接，座部连动件16的另一端与中央连动件15连接。由此，通过前摆杆12和后摆杆13的摆动能够带动侧板140相对于基座组件11的运动，进而带动靠背组件2的运动。
靠背组件2包括与靠背附接的靠背连接件20和与靠背连接件20可枢转连接的靠背连杆组件，所述靠背连杆组件包括第一靠背连杆21、第二靠背连杆22、第三靠背连杆23、第四靠背连杆24和第五靠背连杆25。第一靠背连杆21的一端与中央连动件15铰接，第二靠背连杆22的一端与侧板140的后端铰接，其中，第一靠背连杆21与第二靠背连杆22铰接。第二靠背连杆22的另一端与第三靠背连杆23的下端铰接，第三靠背连杆23的上端与靠背连接件20的后端铰接。第四靠背连杆24的上端与靠背连接件20的前端在第一枢转点P1处铰接，第五靠背连杆25的前端与第一靠背连杆21的另一端在第二枢转点P2处铰接，第五靠背连杆25的后端与第三靠背连杆23的中部铰接，第四靠背连杆24的下端则与第五靠背连杆25的中部铰接。
如图4至图7所示，腿部伸展装置3由多个相互枢转连接的连杆构成，其中，第一腿部连杆31的后端与侧板140铰接，第一腿部连杆31的前端与第二腿部连杆32的后端铰接，第三腿部连杆33的后端与侧板140的前端铰接，第三腿部连杆33的前端与第四腿部连杆34的后端铰接，第二腿部连杆32的前端和第四腿部连杆34的前端分别与第一搁脚件35铰接。
此外，机械伸展装置还包括相互枢转连接的第一传动件18和第二传动件19，第一传动件18的一端与第二传动件19的一端铰接，第一传动件18的另一端铰接在侧板140上，第二传动件19的另一端铰接至腿部伸展装置3，尤其与第一腿部连杆31铰接。由此，在座部组件1的侧板140相对于基座组件11运动时，带动腿部伸展装置3的收缩和伸展运动。
为使得座椅单元能够在不同的位置之间变换，还设置有电驱动装置4。侧板140包括在其内侧固定连接的电机横杆40，电驱动装置4耦连在所述电机横杆40与基座组件11的基座前横梁112之间。在一些实施方式中，驱动装置4设计为线性电驱动器，通过线性电驱动器的伸缩运动，能够使得侧板140相对于基座组件11运动，进而带动靠背组件2和腿部伸展装置3的运动，从而实现座椅单元在不同位置之间、例如坐姿位置、TV姿位置和躺姿位置之间的变换。
所述电驱动装置4在本实施方式中设计用于促使座椅单元的机械伸展装置在坐姿位置、TV姿位置与躺姿位置之间变换。所述电驱动装置4包括电机头41、与电机头41固定连接的电机滑轨42、可沿电机滑轨42相对于电机头41滑移的电机滑块43和电机连杆44。电机头41位置固定地安装在基座后横梁113上，电机连杆44的一端与电机滑块43铰接，另一端与电机横杆40铰接。
如图4至图6所示，在如图4所示的坐姿位置中，第一搁脚件35收拢在座部下方。如果座椅单元从图4所示的坐姿位置变换至图5所示的TV姿位置，第一腿部连杆31和第三腿部连杆33在侧板140的带动下转动。在此过程中，第二腿部连杆32和第四腿部连杆34带动第一搁脚件35向上转动。当座椅单元从图5所示的TV姿位置变换至图6所示的躺姿位置时，第一搁脚板35上扬，并且第一搁脚件35的搁脚面相对于水平面的形成开口向前的锐角α，在该实施方式中，该锐角α为16°至19°，在一些实施方式中，为17°。
机械伸展装置还包括第一联动件141、第二联动件142和第三联动件143。第二联动件142的中部与侧板140转动连接，第二联动件142一端与第一联动件141的一端连接，第一联动件141的另一端与前摆杆12连接，第二联动件142的另一端与第三联动件143的一端连接，第三联动件143另一端与腿部伸展装置3的第一腿部连杆31可枢转地连接。
在机械伸展装置处于图4所示的坐姿位置中时，靠背组件2的靠背连接件20向上竖立，与靠 背连接件20附接的靠背与水平面成夹角β。
在机械伸展装置从图4所示的坐姿位置变换至图5所示的TV姿位置的过程中，电驱动装置4运行，使得电机滑块43沿着电机滑轨42朝向电机头41滑移，使得电机头41与电机滑块43之间的距离减小。在此过程中，电机滑块43通过电机连杆44将侧板140向前、也即朝腿部伸展装置3的方向运动，前摆杆12和后摆杆13随之向前摆动。由此，第一联动件141随着前摆杆12向前移动，并利用第二联动件142和第三联动件143推动第一腿部连杆31；并进而使得腿部伸展装置3展开。侧板连动件17和座部连动件16也随着前摆杆12向前移动，并带动中央连动件15向前移动。在此过程中，中央连动件15随侧板140共同向前移动，进而利用第一靠背连杆21和第二靠背连杆22带动靠背组件2整体向前和向下移动，而靠背连接件20并不发生明显的倾斜，其中，第一枢转点P1和第二枢转点P2均向下且向前移动。
在机械伸展装置从图5所示的TV姿位置变换至图6所示的躺姿位置的过程中，电驱动装置4继续运行，使得电机滑块43沿着电机滑轨42进一步朝向电机头41滑移，使得电机头41与电机滑块43之间的距离进一步减小。在此过程中，电机滑块43通过电机连杆44将侧板140继续向前、也即朝腿部伸展装置3的方向运动，前摆杆12和后摆杆13随之向前以更大幅度摆动。当前摆杆12和后摆杆13摆动至最大程度时，侧板140相对于中央连动件15显著向前移动，从而使中央连动件15和第一靠背连杆21的铰接点与侧板140和第二靠背连杆22的铰接点之间的间距增大，进而使得靠背连杆组件在向前移动的同时，靠背连杆组件本身也压缩，靠背连接件20剧烈地向后倾斜。在此过程中，不仅第一枢转点P1和第二枢转点P2均向前移动，而且第一枢转点P1和第二枢转点P2之间的间距也较之在坐姿位置中和TV姿位置中明显减小。靠背连接件20与座椅单元的靠背附接，在座椅单元从坐姿位置变换至躺姿位置的过程中，靠背与水平面的夹角β增加了至少40°。
图7至图15示出了根据本使用新型的第二种备选的实施方式，其中，图12和图13示出其中第一改进方案的TV姿和躺姿位置的侧视图，图14和图15示出其中第二改进方案的TV姿和躺姿位置的侧视图。
与图1至图6所示的实施方式不同，该第二备选实施方式的腿部伸展装置3还包括第二搁脚件37。腿部伸展装置3由多个相互枢转连接的连杆构成，其中，第一腿部连杆31的后端与侧板140铰接，第一腿部连杆31的前端与第二腿部连杆32的后端铰接，第三腿部连杆33的后端与侧板140的前端铰接，第三腿部连杆33的前端与第四腿部连杆34的后端铰接，第二腿部连杆32的前端和第四腿部连杆34的前端分别与第一搁脚件35铰接，第四腿部连杆34的前端与第二搁脚件37铰接。第一搁脚件35与连动杆36的一端铰接，连动杆36的另一端与第四腿部连杆34的中部铰接。
腿部伸展装置3还包括搁脚延长组件38，所述搁脚延长组件38包括第一延长件381和第二延长件382，第一延长件381一端与第二搁脚件37的中部铰接，第一延长件381的另一端与第二延长件382的一端铰接，第二延长件382的另一端与第二腿部连杆32的中部铰接，第二延长件382的中部与第四腿部连杆34的中部铰接。
在该第二备选实施方式中，第一搁脚件35通过连动杆36与第四腿部连杆34铰接，第四腿部连杆与第二搁脚件连接，第一搁脚件35与第四腿部连杆没有连接关系，增加了第一搁脚件和第二搁脚件在收缩或伸展过程中的运动灵活性。第一搁脚件35、连动杆36、第四腿部连杆34、第二延长件 382和第二腿部连杆32构成五连杆机构，第一搁脚件可以更加灵活的与第二搁脚件靠拢或分隔开，增加了分隔后第一搁脚件与第二搁脚件的距离，增加了第二搁脚件的延伸长度。
根据第二备选实施方式的第一改进方案，在如图11所示的坐姿位置中，第一搁脚件35和第二搁脚件37的搁脚面处于同一平面中，并且第一搁脚件35和第二搁脚件37收拢在座部下方，而且第一搁脚件35位于第二搁脚件37的上方。如果座椅单元从图11所示的坐姿位置变换至图13所示的躺姿位置，第二搁脚件37的前端上扬，并且第二搁脚件37的搁脚面相对于水平面的形成开口向前的锐角α，在该第一改进方案中，在一些实施方式中，该锐角α为12°至15°，在一些实施方式中，为13°。
根据第二备选实施方式的第二改进方案，如果座椅单元从图11所示的坐姿位置变换至图14所示的TV姿位置，第一腿部连杆31和第三腿部连杆33在侧板140的带动下转动，使得搁脚延长组件38从图11所示的收缩位置移动到图14所示的极限位置，在此过程中，第二腿部连杆32带动第一搁脚件35向上转动，连动杆36随第一搁脚件35转动，使第一搁脚件35转动更灵活的同时支撑第一搁脚件35，第四腿部连杆34带动第二搁脚件37和搁脚延长组件38向前延伸和向上转动，直到第二搁脚件37伸展到极限位置。当搁脚延长组件38伸展至图14所示的极限位置，第一搁脚件35的搁脚面处于基本水平的位置，而第二搁脚件37的搁脚面则以其前端向下倾斜。在图15所示的躺姿位置中，在一些实施方式中，第二搁脚件37以其前端下垂，其搁脚面与水平面的形成开口向后的锐角α，在该第二改进方案中，锐角α为12°至20°，在一些实施方式中，为15°。使用者在座椅单元的TV姿位置中能够使腿部略微下垂，而不会使腿部不舒适地过度上翘。
根据图16至图21示意性地示出一种用于可活动的座椅单元的机械伸展装置的第三种备选的实施方式。
如图16至图18所示，所述机械伸展装置包括基座组件11、座部组件1、靠背组件2和腿部伸展装置3。靠背组件2与座部组件1的后部铰接，腿部伸展装置3与座部组件1的前部铰接。所述座部组件1与座椅单元的座部附接，靠背组件2与座椅单元的靠背附接，腿部伸展装置3与座椅单元的脚凳附接。通过座部组件1、靠背组件2与腿部伸展装置3的相对运动，座椅单元或者说其机械伸展装置能够在坐姿位置、TV姿位置和/或躺姿位置之间变换。在所述坐姿位置中，靠背竖立，脚凳收拢在座部下方；在所述TV姿位置中，靠背并不发生明显的向后倾斜，脚凳随着腿部伸展装置的伸展而向上且向前移动至座部前方；在所述躺姿位置中，脚凳保持伸展至座部前方，而靠背明显向后倾斜。
在第三种备选的实施方式中，该机械伸展装置用于铁架落地式的座椅单元，基座组件11将机械伸展装置直接支撑在底面上，并包括设置在左侧和右侧的两个镜像对称的基座纵梁111和将两个基座纵梁111相连的基座前横梁112和基座后横梁113。然而在未示出的实施方式中，基座组件11也可以间接地将机械伸展装置支撑在底面上方，例如基座组件11可旋转地安装在旋转基台上，或者基座组件11位置固定地耦连至在扶手落地式座椅单元的扶手部。
所述座部组件1包括前摆杆12、后摆杆13、与座椅单元的座部附接的侧板140。在如图16所示的实施方式中，前摆杆112以其下端与基座纵梁111的前端铰接，并且后摆杆113以其下端与基座纵梁111的后端铰接。
侧板140能够相对于基座组件11运动，为此，在该所示实施方式中，座部组件1还包括中央连动件15、座部连动件16和侧板连动件17，其中，中央连动件15设置有多个枢转点，所述中央连 动件15分别以所述不同的枢转点与背部组件2、与侧板140铰接、与座部连动件16并且与后摆杆13铰接。座部连动件16一端通过侧板联动件17与前摆杆12连接，座部连动件16的另一端与中央连动件15连接。由此，通过前摆杆12和后摆杆13的摆动能够带动侧板140相对于基座组件11的运动，进而带动靠背组件2的运动。
背部组件2包括与靠背附接的靠背连接件20和与靠背连接件20可枢转连接的靠背连杆组件，所述靠背连杆组件包括第一靠背连杆21、第二靠背连杆22、第三靠背连杆23、第四靠背连杆24和第五靠背连杆25。第一靠背连杆21的一端与中央连动件15铰接，第二靠背连杆22的一端与侧板140的后端铰接，其中，第一靠背连杆21与第二靠背连杆22铰接。第二靠背连杆22的另一端与第三靠背连杆23的下端铰接，第三靠背连杆23的上端与靠背连接件20的后端铰接。第四靠背连杆24的上端与靠背连接件20的前端在第一枢转点P1处铰接，第五靠背连杆25的前端与第一靠背连杆21的另一端在第二枢转点P2处铰接，第五靠背连杆25的后端与第三靠背连杆23的中部铰接，第四靠背连杆24的下端则与第五靠背连杆25的中部铰接。
在如图16至图21所示的第三种备选的实施方式中，腿部伸展装置3由多个相互枢转连接的连杆构成，其中，第一腿部连杆31的后端与侧板140铰接，第一腿部连杆31的前端与第二腿部连杆32的后端铰接，第三腿部连杆33的后端与侧板140的前端铰接，第三腿部连杆33的前端与第四腿部连杆34的后端铰接，第二腿部连杆32的前端和第四腿部连杆34的前端分别与第一搁脚件35铰接。
机械伸展装置还包括相互枢转连接的第一传动件18和第二传动件19，第一传动件18的一端与第二传动件19的一端铰接，第一传动件18的另一端铰接在侧板140上，第二传动件19的另一端铰接至腿部伸展装置3，尤其与第一腿部连杆31铰接。
此外，机械伸展装置还包括驱动连杆16a，所述驱动连杆16a的上端与座部连动件16铰接，其下端与基座纵梁111铰接。在机械伸展装置的坐姿位置和TV姿位置中，驱动连杆16a的上端较之其下端更靠后，也即驱动连杆16a以其上端向后倾斜；而在躺姿位置中，驱动连杆16a的上端较之其下端更靠前，也即驱动连杆16a以其上端向前倾斜。
为使得座椅单元能够在不同的位置之间变换，还设置有电驱动装置4。在腿部伸展装置3的第一腿部连杆31上固定连接有第一电机横杆401，在座部组件处设置了第二电机横杆402和第三电机横杆403，具体而言，在侧板140处固定连接有第二电机横杆402，在中央连动件15处固定连接有第三电机横杆403。电驱动装置4包括耦连在所述第一电机横杆401与第二电机横杆402之间的第一电驱动器404和耦连在第三电机横杆403与基座组件11的基座后横梁113之间的第二电驱动器405。在一些实施方式中，所述第一电驱动器404和第二电驱动器405设计为线性电驱动器，其分别包括电机头、与电机头固定连接的电机滑轨、可沿电机滑轨相对于电机头滑移的电机滑块。通过电机滑块沿电机滑轨的滑移改变电机头与电机滑块之间的间距，从而通过线性电驱动器的这种伸缩运动，能够使得与电机头耦连的部件相对于与电机滑块耦连的部件之间的相对运动。
在该实施方式中，第一电驱动器404和第二电驱动器405相互独立地运行，其中，第一电驱动器404设计用于实现附接于腿部伸展装置3的伸展和收缩，进而实现脚凳的伸缩；第二电驱动器405设计用于实现靠背组件2的伸展和收缩，进而实现靠背的倾斜。通过使第一电驱动器404和第二电驱动器405单独运行或者二者的配合运行，能够使座椅单元处于不同的姿态位置中。例如如图19所示 的坐姿位置、图20所示的TV姿位置和图21所示的躺姿位置。
在图19所示的坐姿位置中，靠背组件2的靠背连接件20连同与其附接的靠背向上竖立，腿部伸展装置3的第一搁脚件35使脚凳收拢在座部下方。在图20所示的TV姿位置中，腿部伸展装置3展开，并且通过第一搁脚件35将脚凳伸展至座部前方。在图21所示的躺姿位置中，靠背连接件20向后剧烈倾斜。
为此，如果座椅单元要从坐姿位置变换至TV姿位置，则仅使第一电驱动器404运行，其中，第一电驱动器404的电机头与电机滑块之间的距离增大，从而使第一电机横杆401相对于第二电机横杆402之间的距离增大，并通过第一腿部连杆31带动腿部伸展装置3相对于侧板140展开。从而使机械伸展装置从图19所示的坐姿位置变换至图20所示的TV姿位置。
此时，如果第二电驱动器405运行，则第二电驱动器405的电机头与电机滑块之间的距离增大，第三电机横杆403相对于基座后横梁113之间大的距离增大，从而借助中央连动件15推动侧板140相对于基座组件11向前、也即朝腿部伸展装置3的方向运动，前摆杆12和后摆杆13随之向前摆动。侧板连动件17和座部连动件16也随着前摆杆12向前移动。由于驱动连杆16a原本在TV姿位置中以其上端向后倾斜，当前摆杆12和后摆杆13向前摆动时，驱动连杆16a以其上端向前枢转，支持座部连动件16向前且向上移动，进而带动中央连动件15在向前移动的同时发生旋转，使中央连动件15与第一靠背连杆21的枢转点和侧板140与第二靠背连杆22的枢转点之间的间距增大，进而使得靠背连杆组件在向前移动的同时，靠背连杆组件本身也压缩，靠背连接件20剧烈地向后倾斜。在此过程中，不仅第一枢转点P1和第二枢转点P2均向前移动，而且第一枢转点P1和第二枢转点P2之间的间距也较之在坐姿位置中和TV姿位置中明显减小。由此实现图21所示的躺姿位置。
当然，座椅单元也可以处于未在图中具体示出的其他姿态位置。例如，当仅第二电驱动器405运行时，靠背连接件20使靠背向后倾斜，而第一电驱动器404并不运行，从而腿部伸展装置仍收拢在座部下方。
图22至图28示出根据本申请的第四种备选的实施方式。不同于第三种备选的实施方式，在第四种备选的实施方式中，腿部伸展装置3还包括第二搁脚件37。腿部伸展装置3由多个相互枢转连接的连杆构成，其中，第一腿部连杆31的后端与侧板140铰接，第一腿部连杆31的前端与第二腿部连杆32的后端铰接，第三腿部连杆33的后端与侧板140的前端铰接，第三腿部连杆33的前端与第四腿部连杆34的后端铰接，第二腿部连杆32的前端与第一搁脚件35铰接，第四腿部连杆34的前端与第二搁脚件37铰接。第一搁脚件35与连动杆36的一端铰接，连动杆36的另一端与第四腿部连杆34的中部铰接。
腿部伸展装置3还包括搁脚延长组件38，所述搁脚延长组件38包括第一延长件381和第二延长件382，第一延长件381一端与第二搁脚件37的中部铰接，第一延长件381的另一端与第二延长件382的一端铰接，第二延长件382的另一端与第二腿部连杆32的中部铰接，第二延长件382的中部与第四腿部连杆34的中部铰接。
在第四种备选的实施方式中，第一搁脚件35通过连动杆36与第四腿部连杆34铰接，第四腿部连杆与第二搁脚件连接，第一搁脚件35与第四腿部连杆没有连接关系，增加了第一搁脚件和第二搁脚件在收缩或伸展过程中的运动灵活性。第一搁脚件35、连动杆36、第四腿部连杆34、第二延长 件382和第二腿部连杆32构成五连杆机构，第一搁脚件可以更加灵活的与第二搁脚件靠拢或分隔开，增加了分隔后第一搁脚件与第二搁脚件的距离，增加了第二搁脚件的延伸长度。
图26至图28示例性地示出第四种备选的实施方式的机械伸展装置的几种姿态位置。
在如图26所示的坐姿位置中，第一搁脚件35和第二搁脚件37的搁脚面处于同一平面中，并且第一搁脚件35和第二搁脚件37收拢在座部下方，而且第一搁脚件35位于第二搁脚件37的上方。在图27所示的TV姿位置中，第一搁脚件35和第二搁脚件37均伸展至座部前方。在图28所示的躺姿位置中，第一搁脚件35和第二搁脚件37仍保持在座部前方，而靠背连接件20向后剧烈倾斜。
如果座椅单元从图26所示的坐姿位置变换至图27所示的TV姿位置，则仅使第一电驱动器404开始伸展，促使第一电机横杆401带动第一腿部连杆31和第三腿部连杆33向前转动，使得搁脚延长组件38从图26所示的收缩位置移动到图27所示的极限位置，在此过程中，第二腿部连杆32带动第一搁脚件35向上转动，连动杆36随第一搁脚件35转动，使第一搁脚件35转动更灵活的同时支撑第一搁脚件35，第四腿部连杆34带动第二搁脚件37和搁脚延长组件38向前延伸和向上转动，直到第二搁脚件37伸展到极限位置。当搁脚延长组件38伸展至图27所示的极限位置，第二搁脚件37的搁脚面则以其前端向上倾斜。由此实现图27所示的TV姿位置。
如果座椅单元从图27所示的TV姿位置变换至图28所示的躺姿位置，则使第二电驱动器405运行，其中，第三电机横杆403相对于基座后横梁113之间大的距离增大，从而借助中央连动件15推动侧板140相对于基座组件11向前、也即朝腿部伸展装置3的方向运动，前摆杆12和后摆杆13随之向前摆动。侧板连动件17和座部连动件16也随着前摆杆12向前移动。由于驱动连杆16a原本在TV姿位置中以其上端向后倾斜，当前摆杆12和后摆杆13向前摆动时，驱动连杆16a以其上端向前枢转，支持座部连动件16向前且向上移动，进而带动中央连动件15在向前移动的同时发生旋转，使中央连动件15与第一靠背连杆21的枢转点和侧板140与第二靠背连杆22的枢转点之间的间距增大，进而使得靠背连杆组件在向前移动的同时，靠背连杆组件本身也压缩，靠背连接件20剧烈地向后倾斜。在此过程中，不仅第一枢转点P1和第二枢转点P2均向前移动，而且第一枢转点P1和第二枢转点P2之间的间距也较之在坐姿位置中和TV姿位置中明显减小。由此实现图28所示的躺姿位置。
附图标记清单
1             座部组件               3              腿部伸展装置
11            基座组件               31             第一腿部连杆
111           基座纵梁               32             第二腿部连杆
112           基座前横梁             33             第三腿部连杆
113           基座后横梁             34             第四腿部连杆
12            前摆杆                 35             第一搁脚件
13            后摆杆                 36             连动杆
140           侧板                   37             第二搁脚件
141           第一联动件             38             搁脚延长组件
142           第二联动件             381            第一延长件
143           第三联动件             382            第二延长件
15            中央连动件             4              电驱动装置
16            座部连动件             40             电机横杆
16a           驱动连杆               41             电机头
17            侧板连动件             42             电机滑轨
18            第一传动件             43             电机连杆
19            第二传动件             401            第一电机横杆
2             靠背组件               402            第二电机横杆
20            靠背连接件             403            第三电机横杆
21            第一靠背连杆           404            第一电驱动器
22            第二靠背连杆           405            第二电驱动器
23            第三靠背连杆
24            第四靠背连杆
25            第五靠背连杆

Claims (31)

  1. 一种用于可活动的座椅单元的机械伸展装置，包括：
    座部组件(1)，其包括基座组件(11)、与座椅单元的座部附接的侧板(140)、耦连在基座组件(11)与所述侧板(140)之间的中央连动件(15)；
    与所述侧板(140)的后部枢转连接的靠背组件(2)，其包括用于附接座椅单元的靠背的靠背连接件(20)和与靠背连接件(20)枢转连接的靠背连杆组件，所述靠背连杆组件包括与所述中央连动件(15)铰接的第一靠背连杆(21)和与所述侧板(140)铰接的第二靠背连杆(22)，其中，所述第一靠背连杆(21)与所述第二靠背连杆(22)铰接；
    与所述侧板(140)的前部枢转连接的腿部伸展装置(3)，其包括相互枢转连接的多个连杆、用于附接脚凳的第一搁脚件(35)；
    所述机械伸展装置使得座椅单元能够在坐姿位置、TV姿位置和/或躺姿位置之间变换，在所述坐姿位置中，第一搁脚件(35)收拢在座部下方；在所述TV姿位置中，第一搁脚件(35)向前伸展；在所述躺姿位置中，所述靠背向后倾斜，所述脚凳的最高点高于所述靠背的最高点，其中，第一搁脚件(35)向前且向上延伸。
  2. 根据权利要求1所述的机械伸展装置，其中，所述靠背在躺姿位置中与在坐姿位置中相比向后倾斜至少35°。
  3. 根据权利要求2所述的机械伸展装置，其中，所述靠背在躺姿位置中与在坐姿位置中相比向后倾斜至少40°。
  4. 根据权利要求1所述的机械伸展装置，其中，在所述躺姿位置中，所述第一搁脚件(35)以其前端上扬，使得第一搁脚件(35)的搁脚面与水平面成开口向前的介于10°至23°之间的锐角。
  5. 根据权利要求4所述的机械伸展装置，其中，在所述躺姿位置中，所述第一搁脚件(35)以其前端上扬，使得第一搁脚件(35)的搁脚面与水平面成开口向前的介于16°至19°之间的锐角。
  6. 根据权利要求1所述的机械伸展装置，其中，所述腿部伸展装置(3)还包括第二搁脚件(37)，在所述坐姿位置中，第一搁脚件(35)和第二搁脚件(37)均收拢在座部下方；在所述TV姿位置中，第一搁脚件(35)和第二搁脚件(37)向前伸展；在所述躺姿位置中，所述靠背向后倾斜，所述脚凳的最高点高于所述靠背的最高点，其中，第一搁脚件(35)和第二搁脚件(37)均向前且向上延伸，其中，第二搁脚件(37)位于第一搁脚件(35)前方。
  7. 根据权利要求6所述的机械伸展装置，其中，在所述躺姿位置中，第二搁脚件(37)以其前端上扬，使得第二搁脚件(37)的搁脚面与水平面成开口向前的介于10°至23°之间的锐角。
  8. 根据权利要求7所述的机械伸展装置，其中，在所述躺姿位置中，第二搁脚件(37)以其前端上扬，使得第二搁脚件(37)的搁脚面与水平面成开口向前的介于12°至15°之间的锐角。
  9. 根据权利要求6所述的机械伸展装置，其中，在所述躺姿位置中，第二搁脚件(37)以其前端下垂，使得第二搁脚件(37)的搁脚面与水平面成开口向后的介于8°至30°之间的锐角。
  10. 根据权利要求9所述的机械伸展装置，其中，在所述躺姿位置中，所述第二搁脚件(37)的搁脚面与水平面成介于12°至20°之间的角度。
  11. 根据权利要求6所述的机械伸展装置，其中，所述第一搁脚件(35)与所述第二搁脚件(37)通过搁脚延长组件(38)连接，所述搁脚延长组件(38)包括相互铰接的第一延长件(381)和第二延长件(382)。
  12. 根据权利要求1所述的机械伸展装置，其中，所述靠背连杆组件还包括第三靠背连杆(23)、第四靠背连杆(24)和第五靠背连杆(25)，其中，所述第三靠背连杆(23)的下端与所述第二靠背连杆(22)铰接，第三靠背连杆(23)的上端与所述靠背连接件(20)的后端铰接，所述第四靠背连杆(24)的上端与所述靠背连接件(20)的前端在第一枢转点(P1)处铰接，所述第五靠背连杆(25)的前端与所述第一靠背连杆(21)在第二枢转点(P2)处铰接，所述第五靠背连杆(25)的后端与所述第三靠背连杆(23)的中部铰接，所述第四靠背连杆(24)的下端与所述第五靠背连杆(25)的中部铰接。
  13. 根据权利要求12所述的机械伸展装置，其中，在座椅单元从坐姿位置变换至躺姿位置的过程中，通过靠背连杆组件的压缩使靠背连接件(20)向后倾斜。
  14. 根据权利要求13所述的机械伸展装置，其中，在座椅单元从坐姿位置变换至躺姿位置的过程中，所述侧板(140)与所述中央连动件(15)之间的相对运动使得所述第一靠背连杆(21)和中央连动件(15)的铰接点与所述第二靠背连杆(22)和侧板(140)的铰接点之间的距离增大，从而实现靠背连杆组件的压缩。
  15. 根据权利要求12所述的机械伸展装置，其中，在座椅单元从坐姿位置变换至躺姿位置的过程中，所述第一枢转点(P1)和所述第二枢转点(P2)均向前移动，其中，所述第一枢转点(P1)和所述第二枢转点(P2)之间的距离减小。
  16. 根据权利要求1所述的机械伸展装置，其中，所述座部组件(1)还包括前摆杆(12)、后摆杆(13)、座部连动件(16)和侧板连动件(17)，其中，所述前摆杆(12)和后摆杆(13)的下端分别与基座组件(11)可枢转地连接，并且所述前摆杆(12)和所述后摆杆(13)的上端通过中央连动件(15)、座部连动件(16)和侧板连动件(17)与侧板(140)连接。
  17. 根据权利要求16所述的机械伸展装置，其中，通过所述侧板(140)相对于基座组件(11)的摆动促使靠背组件(2)和腿部伸展装置(3)相对于座部组件(1)的运动，从而实现座椅单元在坐姿位置与躺姿位置之间的变换。
  18. 根据权利要求1所述机械伸展装置，其中，所述机械伸展装置还包括耦连在基座组件(11)与侧板(140)之间的电驱动装置(4)。
  19. 根据权利要求1所述的机械伸展装置，还包括电驱动装置(4)，电驱动装置(4)包括第一电驱动器(404)和第二电驱动器(405)，所述第一电驱动器(404)设计用于促使腿部伸展装置(3)相对于座部组件(1)的伸缩，所述第二电驱动器(405)设计用于促使靠背组件(2)相对于座部组件(1)的运动。
  20. 根据权利要求19所述的机械伸展装置，其中，所述腿部伸展装置(3)还包括第二搁脚件(37)，其中，当所述第一电驱动器(404)促使腿部伸展装置(3)伸展至座部组件的前方时，所述第二搁脚件(37)位于第一搁脚件(35)前方。
  21. 根据权利要求19所述的机械伸展装置，其中，所述第一电驱动器(404)作用在所述座部 组件(1)与所述腿部伸展装置(3)之间，并且所述第二电驱动器(405)作用于所述基座组件(11)与所述座部组件(1)之间。
  22. 根据权利要求21所述的机械伸展装置，其中，所述基座组件(11)包括基座后横梁(113)，所述腿部伸展装置(3)包括第一电机横杆(401)，所述座部组件(1)包括靠近腿部伸展装置(3)的第二电机横杆(402)和靠近靠背组件(2)的第三电机横杆(403)，其中，所述第一电驱动器(404)作用于所述第一电机横杆(401)与所述第二电机横杆(402)之间，所述第二电驱动器(405)作用于所述第三电机横杆(403)与所述基座后横梁(113)之间。
  23. 根据权利要求22所述的机械伸展装置，其中，所述第二电机横杆(402)连接至所述侧板(140)，所述第三电机横杆(403)连接至所述中央连动件(15)。
  24. 根据权利要求19所述的机械伸展装置，其中，所述靠背连杆组件还包括第三靠背连杆(23)、第四靠背连杆(24)和第五靠背连杆(25)，其中，所述第三靠背连杆(23)的下端与所述第二靠背连杆(22)铰接，第三靠背连杆(23)的上端与所述靠背连接件(20)的后端铰接，所述第四靠背连杆(24)的上端与所述靠背连接件(20)的前端在第一枢转点(P1)处铰接，所述第五靠背连杆(25)的前端与所述第一靠背连杆(21)在第二枢转点(P2)处铰接，所述第五靠背连杆(25)的后端与所述第三靠背连杆(23)的中部铰接，所述第四靠背连杆(24)的下端与所述第五靠背连杆(25)的中部铰接。
  25. 根据权利要求24所述的机械伸展装置，其中，在通过第二电驱动器(405)使靠背组件(2)相对于座部组件(1)运动时，通过所述靠背连杆组件的压缩使靠背连接件(20)向后倾斜。
  26. 根据权利要求25所述的机械伸展装置，其中，在通过第二电驱动器(405)使靠背组件(2)相对于座部组件(1)运动时，所述侧板(140)与所述中央连动件(15)之间的相对运动使得所述第一靠背连杆(21)和中央连动件(15)的铰接点与所述第二靠背连杆(22)和侧板(140)的铰接点之间的距离增大，从而实现靠背连杆组件的压缩。
  27. 根据权利要求24所述的机械伸展装置，其中，在通过第二电驱动器(405)使靠背组件(2)相对于座部组件(1)运动时，所述第一枢转点(P1)和所述第二枢转点(P2)均向前移动，其中，所述第一枢转点(P1)和所述第二枢转点(P2)之间的距离减小。
  28. 根据权利要求19所述的机械伸展装置，其中，所述座部组件(1)还包括前摆杆(12)、后摆杆(13)、座部连动件(16)、侧板连动件(17)和驱动连杆(16a)，其中，所述前摆杆(12)和后摆杆(13)的下端分别与基座组件(11)可枢转地连接，并且所述前摆杆(12)和所述后摆杆(13)的上端通过中央连动件(15)、座部连动件(16)和侧板连动件(17)与侧板(140)连接，所述驱动连杆(16a)的上端与所述座部连动件(16)的中部铰接，所述驱动连杆(16a)的下端与基座组件(11)铰接。
  29. 根据权利要求28所述的机械伸展装置，其中，通过所述侧板(140)相对于基座组件(11)的摆动促使靠背组件(2)相对于座部组件(1)的运动。
  30. 根据权利要求19所述机械伸展装置，其中，所述第一电驱动器(404)和所述第二电驱动器(405)设计为线性电驱动器。
  31. 一种座椅单元，包括：座部、靠背、脚凳和如权利要求1至30任一项所述的机械伸展装置， 所述侧板(140)附接所述座部，所述靠背连接件(20)附接所述靠背，所述第一搁脚件(35)附接所述脚凳。
PCT/CN2024/127047 2023-10-27 2024-10-24 用于可活动的座椅单元的机械伸展装置及座椅单元 Pending WO2025087331A1 (zh)

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