WO2024055847A1 - 一种腿部居中式支架结构及座椅支架 - Google Patents

一种腿部居中式支架结构及座椅支架 Download PDF

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Publication number
WO2024055847A1
WO2024055847A1 PCT/CN2023/116222 CN2023116222W WO2024055847A1 WO 2024055847 A1 WO2024055847 A1 WO 2024055847A1 CN 2023116222 W CN2023116222 W CN 2023116222W WO 2024055847 A1 WO2024055847 A1 WO 2024055847A1
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WO
WIPO (PCT)
Prior art keywords
leg
rod
seat
assembly
hinged
Prior art date
Application number
PCT/CN2023/116222
Other languages
English (en)
French (fr)
Inventor
蔡赛军
李晓鸿
吴启明
张小强
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
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 WO2024055847A1 publication Critical patent/WO2024055847A1/zh

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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
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/02—Dismountable 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
    • A47C7/002—Chair or stool bases

Definitions

  • the invention relates to the technical field of sofa supports, and in particular to a leg-centered support structure and a seat support.
  • Functional seating includes recliners, armchairs, sofas, sectionals, cinema seats and seating units with movable seats.
  • the functional seat with telescopic device can be adjusted between sitting, relaxing and lying positions via the telescopic device.
  • the existing seat unit has the following shortcomings: the legs of the traditional iron frame need to be connected to the side panels on both sides to achieve movement and are not detachable. After being packaged on the sofa, the movement and structure of the legs can be completely seen from the side. The color of the legs does not match the overall color of the sofa, and there is a risk of pinching the hands when the legs extend and retract sideways.
  • the purpose of the present invention is to provide a leg-centered bracket structure, a seat bracket and a seat.
  • the leg assembly is detachably installed on the transmission assembly, and the leg assembly moves in the middle. There is no need to worry about the risk of pinching your hands. After installation, the structure of the leg components cannot be seen from the side, making the overall structure of the seat stronger and looking more beautiful.
  • the first aspect of the present invention provides a leg-centered support structure, which includes a leg assembly and a transmission assembly.
  • the transmission assembly is used to be connected between the seat assemblies on both sides of the seat.
  • the transmission assembly Components include drive crossbars and transmission crossbars;
  • the leg assembly includes a leg transmission rod and a leg driving rod.
  • the leg transmission rod is connected between the two ends of the transmission cross bar.
  • the leg driving rod is connected to the end of the driving cross bar. Between the two ends; the middle part of the driving crossbar is used to connect with the output end of the driving assembly, and is driven by the driving assembly to rotate forward or backward to drive the leg assembly to telescope.
  • the transmission cross bar is arranged parallel to the drive cross bar and close to the seat assembly At the front end, the transmission crossbar is connected to the leg transmission rod at a first fixed point, and the driving crossbar is connected to the leg driving rod at a second fixed point.
  • leg assembly further includes a first intermediate rod and a second intermediate rod
  • the first intermediate rod is hingedly connected to the leg transmission rod
  • the second intermediate rod is provided with a first hinge point and a second hinge point
  • the second intermediate rod is connected to the first hinge point at the first hinge point.
  • the leg driving rod is hinged
  • the second intermediate rod is cross-hinged with the middle part of the leg driving rod at the second hinge point, the first hinge point, the second hinge point, the first fixed point and
  • the line connecting the second fixed points forms a quadrilateral.
  • the angle between the line connecting the first fixed point and the second fixed point and the horizontal plane is not less than 0°.
  • a limiting piece is provided on the second intermediate rod, and a first limiting surface that matches the limiting piece is provided on the lower edge of the leg transmission rod.
  • the vertical distance from the plane where the second intermediate rod is located to the inner side of the seat frame of the seat components on both sides is not less than 150 mm.
  • the leg assembly further includes a main footrest, and one end of the first intermediate rod and the second intermediate rod away from the leg transmission rod and the leg drive rod are respectively hinged with the main footrest.
  • the leg assembly further includes an auxiliary footrest and a footrest link.
  • the auxiliary footrest is hingedly connected to the main footrest.
  • One end of the footrest link is connected to the auxiliary footrest link.
  • the middle part is hinged, and the other end is hinged with the first intermediate rod.
  • the present invention also provides a seat bracket, which includes a seat assembly and the leg-centered bracket structure.
  • the seat assembly includes a seat frame, a first connecting leg rod, a second connecting leg rod and a seat frame.
  • the seat linkage component is rotatably connected between the seat frame and the seat armrest, and the seat linkage component is used to support and drive the seat frame to move relative to the seat armrest;
  • first connecting leg rod is hinged to the front end of the seat frame at the first endpoint, and the other end is connected to the transmission crossbar at the second endpoint; one end of the second connecting leg rod is at the third endpoint.
  • One end is hinged to the front end of the seat frame, and the other end is connected to the driving crossbar at the fourth endpoint.
  • the line connecting the first endpoint, the second endpoint, the fourth endpoint and the third endpoint forms a quadrilateral.
  • the seat linkage assembly includes a seat frame linkage assembly, and the seat frame linkage assembly includes a first connecting frame rod, an intermediate linkage piece, and a second connecting frame rod that are hinged in sequence;
  • the first connecting frame rod and the second connecting frame rod are hinged on the seat frame, and the first connecting frame rod and the middle connecting frame rod are hingedly connected to the seat frame.
  • the intermediate linkage, the second connecting frame rod and the seat frame form a four-bar linkage.
  • the seat assembly further includes a leg linkage rod, one end of the leg linkage rod is hinged to the second connecting leg rod, and the other end is hinged to the intermediate linkage piece.
  • the seat linkage assembly further includes a translation linkage assembly and a side panel mounting piece.
  • the translation linkage assembly is rotationally connected between the seat frame linkage assembly and the side panel mounting piece.
  • the side panel Mounting piece for connecting to the seat armrest.
  • the translation link assembly includes a first rocker, a first intermediate link, a second intermediate link and a second rocker;
  • the first rocker and the second rocker are both hinged on the side plate mounting piece, and the first intermediate link and the second intermediate link are hinged on the first rocker and the second rocker. between.
  • the translation link assembly further includes a first connecting rod and a second connecting rod.
  • One end of the first connecting rod is hinged with the first rocker, and the other end is hinged with the intermediate linkage.
  • the third connecting rod is hinged with the intermediate linkage.
  • One end of the two connecting rods is hinged with the first intermediate connecting rod and the second rocker respectively, and the other end is hinged with the intermediate linkage piece.
  • the present invention has the following beneficial effects:
  • the leg assembly of the present invention is connected to the transmission assembly and is arranged between the seat assemblies on both sides of the seat in the middle of the seat frame.
  • the leg assembly is away from the side of the seat to avoid interference with the side seat assemblies and can avoid telescopicity. There is no risk of catching foreign objects or hands during the process, which improves safety.
  • the four-bar extension structure of the leg assembly of the present invention is arranged below the transmission assembly.
  • the leg assembly can be prevented from being deformed by force.
  • the leg assembly is hidden in the center under the seat bracket, so that the structure and movement of the leg assembly are completely invisible from the side of the seat.
  • the finished seat has a stronger overall structure and a more beautiful appearance.
  • connection between the leg assembly and the cross-bar transmission assembly of the present invention facilitates the installation, positioning and disassembly of the leg assembly, and the disassembly of the leg assembly facilitates the packaging and transportation of the seat frame.
  • Figure 1 is a schematic structural diagram of a seat bracket according to an embodiment of the present invention.
  • Figure 2 is a top view of the seat bracket according to the embodiment of the present invention.
  • Figure 3 is a schematic diagram of the extended position of the seat bracket according to the embodiment of the present invention.
  • Figure 4 is a schematic diagram of the seat frame lying on its axis side according to the embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of the translation link assembly and the side plate mounting member according to the embodiment of the present invention.
  • Figure 6 is a side view of the seat bracket according to the embodiment of the present invention.
  • the reference numbers are: 1-leg assembly, 11-leg transmission rod, 12-leg drive rod, 13-first intermediate rod, 14-second intermediate rod, 15-main footrest, 16- Auxiliary footrest, 17-footrest link, 111-first limiting surface, 121-second limiting surface, 141-first hinge point, 142-second hinge point, 143-limiting member, 2- Transmission component, 21-drive cross bar, 22-transmission cross bar, 221-first fixed point, 211-second fixed point, 3-seat component, 31-seat frame, 32-first connecting leg rod, 33- The second connecting leg rod, 34-seat linkage component, 321-first endpoint, 322-second endpoint, 331-third endpoint, 332-fourth endpoint, 341-seat frame linkage component, 3411-first linkage Frame rod, 3412-middle linkage, 3413-second connecting frame rod, 342-translation link assembly, 343-side plate mounting piece, 3421-first rocker, 3422-first middle link, 3423-second Middle
  • references herein to "one embodiment” or “an embodiment” refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention.
  • the orientation or positional relationship indicated by the terms “upper”, “lower”, “front”, “back”, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of To facilitate the description of the present invention and to simplify the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation of the present invention.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, it is limited to “th The characteristics of “first” and “second” may expressly or implicitly include one or more of these characteristics.
  • first, second, etc. are used to distinguish similar objects and are not necessarily used to describe Specific order or sequence. It is to be understood that data so used are interchangeable under appropriate circumstances so that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.
  • connection In the present invention, unless otherwise clearly stated and limited, the terms “installation”, “connection” and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be A mechanical connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be A mechanical connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components.
  • the seat in this embodiment can be adjusted between a sitting position, a stretched position and a lying position.
  • the first adjustment stage is the adjustment of the seat from the sitting position to the stretched position
  • the second adjustment stage is the adjustment of the seat from the stretched position to the lying position.
  • the seat backrest angle remains basically unchanged, and the leg assembly extends forward to the extreme position; during the second adjustment stage, the leg assembly and seat frame as a whole tilt upward and the seat back rotates backwards , the angle between the backrest and the seat frame becomes larger until it is adjusted to the final lying position.
  • the space between two opposite seat assemblies that is, the opposite side of the two seat frames is the "inside” side
  • the opposite direction is the “outer” side
  • the direction in which the leg assembly extends is the “front” side
  • the direction opposite to it is the "front” side.
  • the opposite direction is "back”.
  • this embodiment provides a leg-centered bracket structure, which includes a leg component 1 and a transmission component 2.
  • the transmission component 2 is used to be connected between the seat components 3 on both sides of the seat.
  • the transmission assembly 2 includes a driving cross bar 21 and a transmission cross bar 22;
  • the leg assembly 1 includes a leg transmission rod 11 and a leg driving rod 12, and the leg transmission rod 11 is connected between the two ends of the transmission cross bar 22,
  • the leg drive rod 12 is connected between the two ends of the drive crossbar 21; the middle part of the drive crossbar 21 is used to connect with the output end of the drive assembly 4, and is driven by the drive assembly 4 to rotate forward or backward. To drive the leg assembly 1 to expand and contract.
  • the seat components 3 of the seat are divided into two groups and are arranged oppositely at both ends of the transmission component 2 .
  • the leg components 1 are a group.
  • the leg components 1 are arranged in the middle or close to the middle of the transmission component 2 so that the support points for the legs are centered and the force and support on both sides of the leg components are kept stable.
  • the leg assembly 1 is far away from the seat assembly 3 on the side of the seat, which can avoid interference with the side seat assembly 3 during telescopic movement, and the leg assembly is centrally located. After the footrest and seat soft bag are installed, the user cannot touch it.
  • the leg components located under the soft bag can avoid the risk of catching foreign objects or pinching hands during the expansion and contraction process, improving safety.
  • the transmission cross bar 22 is arranged parallel to the driving cross bar 21 and is close to the front end of the seat assembly 3.
  • the driving cross bar 21 is provided with a second fixed point 211
  • the transmission cross bar 22 is provided with a first fixed point 221.
  • the transmission crossbar 22 is connected to the leg transmission rod 11 at a first fixed point 221
  • the driving crossbar 21 is connected to the leg driving rod 12 at a second fixed point 211 .
  • the angle between the line connecting the first fixed point 221 and the second fixed point 211 and the horizontal plane is not less than 0°. Preferably, it can be 15°, 20°, 25°, 28°, 30° or 33°, in this embodiment it is 28°.
  • the two fixed points of the transmission assembly 2 and the leg assembly 1 are not on the same level, so that the transmission assembly 2 can drive the leg assembly 1 to extend and retract diagonally forward smoothly without interfering with the seat frame during driving.
  • the driving crossbar 21 is used to rotate forward or backward under the drive of the driving assembly 4 and drive the transmission crossbar 22 to move and the leg assembly 1 to extend or shrink.
  • the transmission assembly 2 is detachably installed with the leg assembly 1 through fasteners such as bolts, nuts, screws or rivets at the first fixed point 221 and the second fixed point 211 .
  • the double-cross-bar transmission assembly 2 is arranged between the seat components on both sides to provide better stability and structural strength. When the seat is stressed, the double-cross-bar transmission assembly located at the front end of the seat frame also has a supporting role and can avoid cushioning. The sinking caused excessive force and deformation of the leg components.
  • connection between the leg assembly 1 and the cross-bar transmission assembly is more convenient for the installation, positioning and disassembly of the leg assembly.
  • the leg assembly and the transmission assembly do not need to be assembled before leaving the factory.
  • the small-volume seat bracket after the leg assembly is disassembled is more convenient. Easy to pack and ship.
  • the leg assembly 1 also includes a first intermediate rod 13 and a second intermediate rod 14.
  • the first intermediate rod 13 is hinged with the leg transmission rod 11, and the second intermediate rod 14 is provided with a first hinge point 141 and a second Hinge point 142, the second intermediate rod 14 is hinged with the leg drive rod 12 at the first hinge point 141, the second intermediate rod 14 is cross-hinged with the middle part of the leg drive rod 11 at the second hinge point 142, the first hinge
  • the line connecting the point 141, the second hinge point 142, the first fixed point 221 and the second fixed point 211 forms a quadrilateral.
  • the leg transmission rod 11, the leg driving rod 12, the first intermediate rod 13 and the second intermediate rod 14 of the leg assembly 1 are cross-hinged telescopic link structures, and the first hinge point 141 and the second hinge
  • the quadrilateral telescopic structure formed by the connection between point 142, the first fixed point 221 and the second fixed point 211 allows the leg assembly 1 to extend or contract relative to the transmission assembly 2.
  • the telescopic structure is simple and the movement is smooth.
  • the quadrilateral telescopic structure It is arranged under the transmission assembly 2. When the seat is stressed, the double cross-bar structure of the transmission assembly has better stability and support, and can also avoid the force deformation of the leg assembly.
  • the second intermediate rod 14 is provided with a limiter 143
  • the lower edge of the leg transmission rod 11 is provided with a first limiter surface 111 that matches the limiter 143.
  • the current position of the leg assembly 1 is the limit position of the leg assembly 1's extension.
  • a second limiting surface 121 is provided on the edge of the leg driving rod 12.
  • the second limiting surface 121 conflicts with the limiting member 143
  • the current position of the leg assembly 1 is the limit position of the leg assembly 1 for contraction.
  • the limiting member 143 cooperates with the first limiting surface 111 or the second limiting surface 121 to limit the position and prevent the footrest from loosening.
  • the vertical distance H from the plane where the second intermediate rod 14 is located to the inner surface of the seat frame 31 of the seat components 3 on both sides is not less than 150 mm.
  • it can be 150mm, 170mm, 180mm, 185mm, 190mm or 200mm.
  • the vertical distance from the plane where the second intermediate rod is located to the inner surface of one of the seat frames 31 is 178 mm.
  • the vertical distance from the plane of the second intermediate rod to the inner side of the seat frame 31 on both sides of the seat limits the specific position of the leg assembly 1 in the transmission assembly 2 to be in the middle or close to the middle.
  • the pressure direction of the leg assembly is located in the middle of the seat, so the central placement of the leg assembly is beneficial to keeping the seat frame balanced.
  • the leg assembly 1 also includes a main footrest 15 .
  • One end of the first intermediate rod 13 and the second intermediate rod 14 away from the leg transmission rod 11 and the leg drive rod 12 are respectively connected with the main footrest.
  • the foot piece 15 is hinged.
  • the leg assembly 1 also includes an auxiliary footrest 16 and a footrest link 17.
  • the auxiliary footrest 16 is hingedly connected to the main footrest 15.
  • One end of the footrest link 17 is hinged to the middle of the auxiliary footrest 16, and the other end is hinged to the middle of the auxiliary footrest 16.
  • the first intermediate rod 13 is hinged.
  • the main footrest 15 is used to connect with the main footrest of the seat
  • the auxiliary footrest 16 is used to connect with the auxiliary footrest of the seat.
  • the auxiliary footrest 16 drives the auxiliary footrest to fold and shrink to the bottom of the leg assembly.
  • the auxiliary footrest 16 16 extends to the front of the main footrest 15 .
  • This embodiment also provides a seat bracket, which includes a seat assembly 3 and a leg-centered bracket structure.
  • the seat assembly 3 includes a seat frame 31, a first connecting leg rod 32, a second connecting leg rod 33 and a seat linkage.
  • Assembly 34, the seat linkage assembly 34 is rotatably connected between the seat frame 31 and the seat armrest.
  • the seat linkage assembly 34 is used to support and drive the seat frame 31 to move relative to the seat armrest; one end of the first connecting leg rod 32 is at the first end
  • the point 321 is hinged with the front end of the seat frame 31, and the other end is connected with the transmission cross bar 22 at the second end point 322; one end of the second connecting leg rod 33 is hinged with the front end of the seat frame 31 at the third end point 331, and the other end is at
  • the fourth endpoint 332 is connected to the driving crossbar 21, and the line connecting the first endpoint 321, the second endpoint 322, the fourth endpoint 332 and the third endpoint 331 forms a quadrilateral.
  • the two ends of the transmission assembly 2 are respectively connected with the two quadrilateral telescopic structures formed by the seat frame 31, the first connecting leg rod 32 and the second connecting leg rod 33, and the middle part of the transmission assembly 2 and the leg group.
  • the quadrilateral telescopic structure formed by the component 1 cooperates to realize the telescopic movement of the leg assembly between the sitting position and the lying position.
  • the installation height of the first endpoint 321 and the third endpoint 331 is lower than the seat frame installation surface on the seat frame 31 to prevent the first connecting leg rod 32 and the second connecting leg rod 33 from contacting the seat frame when rotating. Interference occurs on the mounting surface.
  • the distance from the first endpoint 321 to the second endpoint 322 and the distance from the third endpoint 331 to the fourth endpoint 332 are both 60mm-80mm, preferably, they can be 60mm, 65mm, 70mm or 80mm.
  • the distance from the first endpoint 321 to the second endpoint 322 and the distance from the third endpoint 331 to the fourth endpoint 332 satisfy the rotation space of the first connecting leg rod 32 and the second connecting leg rod 33 and are beneficial to Compress the space occupied by the bracket structure in the vertical direction.
  • the seat linkage assembly 34 includes a seat frame linkage assembly 341
  • the seat frame linkage assembly 341 includes a first connecting frame rod 3411 , an intermediate linkage piece 3412 and a second connecting frame rod 3413 that are hinged in sequence.
  • the first connecting frame rod 3411 and the second connecting frame rod 3413 are both hinged on the seat frame 31.
  • the first connecting frame rod 3411, the intermediate linkage 3412, the second connecting frame rod 3413 and the seat frame 31 form a four-bar linkage mechanism.
  • the seat assembly 3 also includes a leg linking rod 35.
  • One end of the leg linking rod 35 is hinged with the second connecting leg rod 33, and the other end is hinged with the intermediate linkage 3412.
  • the leg linkage rod 35 is used to connect the leg assembly 1 and the seat linkage assembly 34 .
  • the middle linkage 3412 remains stationary, and the seat frame 31 translates forward with the extension of the leg assembly 1 through the rotation of the first frame link 3411 and the second link frame 3413 until the leg assembly 1 is fully extended. .
  • the seat linkage assembly 34 also includes a translation link assembly 342 and a side plate mounting piece 343.
  • the translation link assembly 342 is rotationally connected between the seat frame linkage assembly 341 and the side plate mounting piece 343.
  • the side plate mounting piece 343 is used for Attached to seat armrest.
  • the translation link assembly 342 includes a first rocker 3421, a first intermediate link 3422, a second intermediate link 3423 and a second rocker 3424; both the first rocker 3421 and the second rocker 3424 are hinged on the side plate mounting parts. 343, the first intermediate link 3422 and the second intermediate link 3423 are hinged between the first rocker 3421 and the second rocker 3424.
  • the translation link assembly 342 also includes a first connecting rod 3425 and a second connecting rod 3426.
  • One end of the first connecting rod 3425 is hinged with the first rocker 3421, and the other end is hinged with the intermediate linkage 3412.
  • the second connecting rod 3426 One end is hinged to the first intermediate link 3422 and the second rocker 3424 respectively, and the other end is hinged to the intermediate linkage 3412.
  • the seat frame linkage assembly 341 tilts forward and translates upward through the movement of the translation link assembly 342 .
  • the seat frame of this embodiment also includes a backrest assembly 7, which is rotatably connected between the seat frame 31 and the side plate mounting member 343.
  • the backrest assembly 7 is used to connect with the seat back to adjust the seat back angle.
  • the backrest assembly 7 includes a backrest installation part 71, a seat frame connection part 72, a backrest connection part 73 and a backrest limiter 74; the middle part of the seat frame connection part 72 is connected to the seat frame 31, and both ends of the seat frame connection part 72 are connected to the backrest respectively.
  • the mounting piece 71 is hinged to the backrest limiter 74.
  • One end of the backrest connector 73 is hinged to the middle of the backrest mounting piece 71, and the other end is hinged to the backrest limiter 74.
  • the backrest limiter 74 is connected to the side plate mounting piece 343 through a connecting rod.
  • the rear end is hinged; during the second adjustment stage, the leg assembly and the seat frame as a whole move upward obliquely.
  • the seat frame connection part 72 moves upward obliquely with the seat frame 31, the backrest limiter 74 and the backrest connection part 73
  • the backrest mounting piece 71 is driven to rotate backward.
  • the rear end of the side plate mounting member 343 of the seat linkage assembly 34 is provided with a driving fixing rod 6
  • the driving assembly 4 is disposed between the driving cross bar 21 and the driving fixing rod 6 .
  • the driving assembly 4 includes a linear pushing member 41.
  • a connecting rod 5 is provided in the middle of the driving crossbar 21.
  • the linear pushing member 41 is rotationally connected to the connecting rod 5 through a rotating shaft 42.
  • the linear pushing member 41 may be a linear slide block or a push rod.
  • the driving assembly 4 is a push rod motor, and the linear pushing member 41 is a linear push rod.
  • the motor end of the driving assembly 4 is connected to the middle part of the driving fixed rod 6.
  • the motor of the driving assembly 4 drives the linear pushing member 41 to telescopically move, thereby driving The transmission assembly 2, the leg assembly 1, the seat assembly 3 and the backrest assembly 7 move.
  • the driving component 4 can be a slider motor
  • the linear pushing member 41 can be a linear slider.
  • the seat unit of this embodiment can achieve three positions: a sitting position, an extended position, and a lying position.
  • both the leg assembly 1 and the backrest assembly are retracted to their extreme positions; in the extended position, , the leg assembly 1 extends forward to the extreme position, and the angle between the backrest assembly and the seat frame 31 remains the same as the sitting position; in the lying position, the leg telescopic assembly extends to the extreme position, and the backrest assembly rotates backward to the extreme position.
  • This embodiment also provides a seat, including a seat back, a seat armrest and a seat frame, the seat frame is fixedly connected to the inner side of the seat armrest through the side panel mounting parts 343 on both sides, and the seat back is connected to the backrest component 7 of the seat frame.
  • the seat bracket with the leg assembly of this embodiment can be applied to seats with floor-standing armrests.
  • Most of the existing sofa seats with floor-mounted armrests are for home use, mostly for business use, and have a negative impact on the structural stability and stability of the seat.
  • the appearance and safety requirements are relatively high.
  • the leg assembly is connected to the transmission assembly and is arranged in the middle of the seat frame.
  • the double cross-bar structure of the transmission assembly has better stability and support, which can prevent the seat cushion from sinking.
  • connection between the leg assembly and the cross-bar transmission assembly in this embodiment facilitates the installation, positioning and disassembly of the leg assembly, and the disassembly of the leg assembly facilitates the packaging and transportation of the seat frame.

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Abstract

一种腿部居中式支架结构及座椅支架，包括腿部组件（1）和传动组件（2），传动组件（2）用于连接在座椅的两侧座部组件（3）之间，传动组件（2）包括驱动横杆（21）和传动横杆（22）；腿部组件（1）包括腿部传动杆（11）和腿部驱动杆（12），腿部传动杆（11）连接在传动横杆（22）的两端部之间，腿部驱动杆（12）连接在驱动横杆（21）的两端部之间；驱动横杆（21）的中部用于与驱动组件（4）的输出端连接，并在驱动组件（4）的驱动下转动向前或向后移动以带动腿部组件（1）伸缩。

Description

一种腿部居中式支架结构及座椅支架 技术领域
本发明涉及沙发支架技术领域，特别涉及一种腿部居中式支架结构及座椅支架。
背景技术
随着人们生活水平的提高，生活中功能性沙发和座椅越来越常见。随着功能性座椅包括躺椅、靠椅、沙发、组合座椅、影院座椅以及具有移动座部的座椅单元。具有伸缩装置的功能性座椅可以通过伸缩装置在坐姿、休闲姿和躺姿的位置间调节。
现有的座椅单元存在以下缺陷：传统铁架腿部需要在两侧和侧板相连实现运动，且不可拆卸，包装在沙发上后，从侧边可完全看到腿部的运动和结构，腿部和沙发整体的色彩不搭配，腿部在侧边伸缩运动时有夹伤手部的风险。
发明内容
针对现有技术的上述问题，本发明的目的在于提供一种腿部居中式支架结构、座椅支架及座椅，腿部组件可拆卸地安装在传动组件上，腿部组件居中运动，运动中不必担心有夹到手部的风险，安装后侧面观察不到腿部组件的结构，使座椅整体结构性更强，看上去更美观。
为了解决上述问题，第一方面本发明提供一种腿部居中式支架结构，包括腿部组件和传动组件，所述传动组件用于连接在座椅的两侧座部组件之间，所述传动组件包括驱动横杆和传动横杆；
所述腿部组件包括腿部传动杆和腿部驱动杆，所述腿部传动杆连接在所述传动横杆的两端部之间，所述腿部驱动杆连接在所述驱动横杆的两端部之间；所述驱动横杆的中部用于与驱动组件的输出端连接，并在所述驱动组件的驱动下转动向前或向后移动以带动所述腿部组件伸缩。
进一步地，所述传动横杆与所述驱动横杆平行设置，且靠近所述座椅组件 的前端，所述传动横杆在第一固定点处与所述腿部传动杆连接，所述驱动横杆在第二固定点处与所述腿部驱动杆连接。
进一步地，所述腿部组件还包括第一中间杆和第二中间杆；
所述第一中间杆与所述腿部传动杆铰接，所述第二中间杆上设置有第一铰接点和第二铰接点，所述第二中间杆在所述第一铰接点处与所述腿部驱动杆铰接，所述第二中间杆在所述第二铰接点处与所述腿部传动杆的中部交叉铰接，所述第一铰接点、第二铰接点、第一固定点和第二固定点的连线成四边形。
进一步地，所述第一固定点和第二固定点的连线与水平面的夹角不小于0°。
进一步地，所述第二中间杆上设置有限位件，所述腿部传动杆的下边缘设置有与所述限位件相配合的第一限位面，当所述第一限位面与所述限位件相抵触时，所述腿部组件的当前位置为所述腿部组件伸展的极限位置。
进一步地，所述第二中间杆所在平面到两侧所述座部组件的座框内侧面的垂直距离都不小于150mm。
进一步地，所述腿部组件还包括主搁脚件，所述第一中间杆和第二中间杆远离所述腿部传动杆和腿部驱动杆的一端分别与所述主搁脚件铰接。
进一步地，所述腿部组件还包括副搁脚件和搁脚连杆，所述副搁脚件与所述主搁脚件铰接，所述搁脚连杆一端与所述副搁脚件的中部铰接，另一端与所述第一中间杆铰接。
第二方面本发明还提供一种座椅支架，包括座部组件和所述的腿部居中式支架结构，所述座部组件包括座框、第一连腿杆、第二连腿杆和座部联动组件，所述座部联动组件转动连接在所述座框与座椅扶手之间，所述座部联动组件用于支撑带动所述座框相对于所述座椅扶手移动；
所述第一连腿杆一端在第一端点处与所述座框的前端铰接，另一端在第二端点处与所述传动横杆连接；所述第二连腿杆一端在第三端点处与所述座框的前端铰接，另一端在第四端点处与所述驱动横杆连接，所述第一端点、第二端点、第四端点和第三端点的连线成四边形。
进一步地，所述座部联动组件包括座框联动组件，所述座框联动组件包括依次铰接的第一连框杆、中间联动件和第二连框杆；
所述第一连框杆和第二连框杆都铰接在所述座框上，所述第一连框杆、中 间联动件、第二连框杆和所述座框形成四连杆机构。
进一步地，所述座部组件还包括腿部连动杆，所述腿部连动杆一端与所述第二连腿杆铰接，另一端与所述中间联动件铰接。
进一步地，所述座部联动组件还包括平移连杆组件和侧板安装件，所述平移连杆组件转动连接在所述座框联动组件和所述侧板安装件之间，所述侧板安装件用于与座椅扶手连接。
进一步地，所述平移连杆组件包括第一摇杆、第一中间连杆、第二中间连杆和第二摇杆；
所述第一摇杆和第二摇杆都铰接在所述侧板安装件上，所述第一中间连杆和第二中间连杆铰接在所述第一摇杆与所述第二摇杆之间。
进一步地，所述平移连杆组件还包括第一连接杆和第二连接杆，所述第一连接杆一端与所述第一摇杆铰接，另一端与所述中间联动件铰接，所述第二连接杆的一端分别与所述第一中间连杆和第二摇杆铰接，另一端与所述中间联动件铰接。
由于上述技术方案，本发明具有以下有益效果：
本发明腿部组件与传动组件连接并设置在座椅的两侧座部组件之间设置在座椅支架的中部，腿部组件远离座椅侧面，避免与侧面座部组件干涉，且可以避免伸缩过程中产生夹到异物或夹手等风险，提高安全性。
本发明腿部组件的四杆伸展结构设置在传动组件下方，当座椅受力时，因为传动组件的双横杆结构具有更好的稳定性和支撑性，可以避免腿部组件受力变形，且腿部组件居中隐藏在座椅支架下方，使得在座椅侧面完全看不到腿部组件的结构和运动、成品座椅整体结构性更强，座椅外观更加美观。
本发明腿部组件与横杆式传动组件的连接便于腿部组件的安装定位和拆卸，将腿部组件拆卸后更便于座椅支架的包装和运输。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它附图。
图1是本发明实施例座椅支架的结构示意图；
图2是本发明实施例座椅支架的俯视图；
图3是本发明实施例座椅支架的伸展姿示意图；
图4是本发明实施例座椅支架的轴侧躺姿示意图；
图5是本发明实施例平移连杆组件和侧板安装件的结构示意图；
图6是本发明实施例座椅支架的侧面视图。
其中，附图标记为：1-腿部组件，11-腿部传动杆，12-腿部驱动杆，13-第一中间杆，14-第二中间杆，15-主搁脚件，16-副搁脚件，17-搁脚连杆，111-第一限位面，121-第二限位面，141-第一铰接点，142-第二铰接点，143-限位件，2-传动组件，21-驱动横杆，22-传动横杆，221-第一固定点，211-第二固定点，3-座部组件，31-座框，32-第一连腿杆，33-第二连腿杆，34-座部联动组件，321-第一端点，322-第二端点，331-第三端点，332-第四端点，341-座框联动组件，3411-第一连框杆，3412-中间联动件，3413-第二连框杆，342-平移连杆组件，343-侧板安装件，3421-第一摇杆，3422-第一中间连杆，3423-第二中间连杆，3424-第二摇杆，3425-第一连接杆，3426-第二连接杆，35-腿部连动杆，4-驱动组件，41-直线推动件，42-转轴，5-连杆件，6-驱动固定杆，7-靠背组件，71-靠背安装件，72-座框连接部，73-靠背连接件，74-靠背限位件。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
此处所称的“一个实施例”或“实施例”是指可包含于本发明至少一个实现方式中的特定特征、结构或特性。在本发明的描述中，需要理解的是，术语“上”、“下”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第 一”、“第二”的特征可以明示或者隐含的包括一个或者更多个该特征。而且，术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。
在本发明中，除非另有明确的规定和限定，术语“安装”、“连接”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
实施例
本实施例座椅能够在坐姿、伸展姿和躺姿位置之间调节，座椅从坐姿调节至伸展姿为第一调节阶段，座椅从伸展姿调节至躺姿为第二调节阶段。在第一调节阶段，座椅靠背角度基本保持不变，腿部组件向前伸展到极限位置；在第二调节阶段过程中，腿部组件和座框整体倾斜向上移动，座椅靠背向后转动，靠背与座框之间角度变大，直到调节为最终的躺姿位置。在本实施例中，相对的两座椅组件之间，即两座框的相对侧为“内”侧，与其相反的方向为“外”侧，腿部组件伸展的方向为“前”，与其相反的方向为“后”。
如图1-6所示，本实施例提供了一种腿部居中式支架结构，包括腿部组件1和传动组件2，传动组件2用于连接在座椅的两侧座部组件3之间，传动组件2包括驱动横杆21和传动横杆22；腿部组件1包括腿部传动杆11和腿部驱动杆12，腿部传动杆11连接在传动横杆22的两端部之间，腿部驱动杆12连接在驱动横杆21的两端部之间；驱动横杆21的中部用于与驱动组件4的输出端连接，并在驱动组件4的驱动下转动向前或向后移动以带动腿部组件1伸缩。
具体地，在本实施例中座椅的座部组件3为两组且相对设置在传动组件2的两端。本实施例腿部组件1为一组，腿部组件1设置在传动组件2的中部或靠近中部的位置，以使得对腿部的支撑点居中，保持腿部组件两侧受力和支撑平稳。腿部组件1远离座椅侧面的座部组件3，可以避免伸缩运动中与侧面座部组件3干涉，且腿部组件居中设置当安装好搁脚板和座椅软包后，使用者触碰不到位于软包下方的腿部组件，可以避免伸缩过程中产生夹到异物或夹手等风险，提高安全性。
具体地，传动横杆22与驱动横杆21平行设置，且靠近座椅组件3的前端，驱动横杆21上设置有第二固定点211，传动横杆22上设置有第一固定点221，传动横杆22在第一固定点221处与腿部传动杆11连接，驱动横杆21在第二固定点211处与腿部驱动杆12连接。如图6所示，第一固定点221与第二固定点211的连线与水平面的夹角不小于0°。优选地，可以为15°、20°、25°、28°、30°或33°，在本实施例中为28°。传动组件2与腿部组件1的两固定点不在同一水平面上，使得驱动时传动组件2可以带动腿部组件1顺利向斜前方伸展和收回，且不与座椅座框产生干涉。
本实施例驱动横杆21用于在驱动组件4的驱动下转动向前或向后移动并通过腿部组件1与传动横杆22的连接结构带动传动横杆22移动和腿部组件1伸展或收缩。本实施例传动组件2在第一固定点221和第二固定点211处通过螺栓螺母、螺钉或铆钉等紧固件可拆卸地与腿部组件1配合安装。双横杆式传动组件2设置在两侧座椅组件之间具有更好的稳定性和结构强度，座椅受力时位于座框前端的双横杆式传动组件还具有支撑作用，可以避免坐垫下沉造成腿部组件受力过大变形。腿部组件1与横杆式传动组件的连接更便于腿部组件的安装定位和拆卸，出厂时腿部组件与传动组件可以先不组装，将腿部组件拆分后的小体积座椅支架更便于包装和运输。
具体地，腿部组件1还包括第一中间杆13和第二中间杆14，第一中间杆13与腿部传动杆11铰接，第二中间杆14上设置有第一铰接点141和第二铰接点142，第二中间杆14在第一铰接点141处与腿部驱动杆12铰接，第二中间杆14在第二铰接点142处与腿部传动杆11的中部交叉铰接，第一铰接点141、第二铰接点142、第一固定点221和第二固定点211的连线成四边形。具体地，腿部组件1的腿部传动杆11、腿部驱动杆12、第一中间杆13和第二中间杆14为交叉铰接的可伸缩连杆结构，第一铰接点141、第二铰接点142、第一固定点221和第二固定点211的连线组成的四边形伸缩结构，使得腿部组价1可以相对于传动组件2伸展或收缩，伸缩结构简单且运动平稳，四边形可伸缩结构设置在传动组件2下方，当座椅受力时，因为传动组件的双横杆结构具有更好的稳定性和支撑性，还可以避免腿部组件受力变形。
具体地，第二中间杆14上设置有限位件143，腿部传动杆11的下边缘设置有与限位件143相配合的第一限位面111，当第一限位面111与限位件143 相抵触时，腿部组件1的当前位置为腿部组件1伸展的极限位置。腿部驱动杆12的边缘上设置有第二限位面121，当第二限位面121与限位件143相抵触时，腿部组件1的当前位置为腿部组件1收缩的极限位置。限位件143与第一限位面111或第二限位面121配合抵触，起限位和防止搁脚件松脱的作用。一方面可以限位防止腿部组件1过渡伸展或收缩，使不能顺利收回或展开；另一方面可以防止搁脚件和搁脚板没有收缩到预定极限位置容易松脱。具体地，如图2所示，第二中间杆14所在平面到两侧座部组件3的座框31内侧面的垂直距离H都不小于150mm。优选地，可以为150mm、170mm、180mm、185mm、190mm或200mm。本实施例，第二中间杆所在平面到其中一侧座框31内侧面的的垂直距离为178mm。第二中间杆所在平面到到座椅两侧的座框31内侧面的垂直距离限制了腿部组件1在传动组件2的具体位置为中部或靠近中部的位置。座椅使用时，腿部组件受压方向位于座椅中部，所以腿部组件居中设置有利于使座椅支架保持平衡。
具体地，如图3所示，腿部组件1还包括主搁脚件15，第一中间杆13和第二中间杆14远离腿部传动杆11和腿部驱动杆12的一端分别与主搁脚件15铰接。腿部组件1还包括副搁脚件16和搁脚连杆17，副搁脚件16与主搁脚件15铰接，搁脚连杆17一端与副搁脚件16的中部铰接，另一端与第一中间杆13铰接。在本实施例中，主搁脚件15用于与座椅的主搁脚板连接，副搁脚件16用于与座椅的副搁脚板连接。坐姿位置时副搁脚件16带动副搁脚板折叠收缩至腿部组件下方，在座椅从坐姿调节至伸展姿的第一调节阶段，和调节至躺姿的第二调节阶段，副搁脚件16伸展至主搁脚件15前方。
本实施例还提供一种座椅支架，包括座部组件3和腿部居中式支架结构，座部组件3包括座框31、第一连腿杆32、第二连腿杆33和座部联动组件34，座部联动组件34转动连接在座框31与座椅扶手之间，座部联动组件34用于支撑带动座框31相对于座椅扶手移动；第一连腿杆32一端在第一端点321处与座框31的前端铰接，另一端在第二端点322处与传动横杆22连接；第二连腿杆33一端在第三端点331处与座框31的前端铰接，另一端在第四端点332处与驱动横杆21连接，第一端点321、第二端点322、第四端点332和第三端点331的连线成四边形。具体地，传动组件2的两端分别与座框31、第一连腿杆32和第二连腿杆33形成的两个四边形伸缩结构同传动组件2的中部与腿部组 件1构成的四边形伸缩结构配合实现腿部组件在坐姿和躺姿位置之间的伸缩运动。
本实施例中，第一端点321和第三端点331的安装高度低于座框31上的座框安装面，避免第一连腿杆32和第二连腿杆33在转动时与座框安装面产生干涉。第一端点321到第二端点322的距离和第三端点331到第四端点332的距离均为60mm-80mm，优选地，可以为60mm、65mm、70mm或80mm。本实施例第一端点321到第二端点322的距离和第三端点331到第四端点332的距离在满足第一连腿杆32和第二连腿杆33的转动空间的同时，有利于压缩支架结构在垂直方向所占空间。
具体地，如图4和5所示，座部联动组件34包括座框联动组件341，座框联动组件341包括依次铰接的第一连框杆3411、中间联动件3412和第二连框杆3413；第一连框杆3411和第二连框杆3413都铰接在座框31上，第一连框杆3411、中间联动件3412、第二连框杆3413和座框31形成四连杆机构。
具体地，座部组件3还包括腿部连动杆35，腿部连动杆35一端与第二连腿杆33铰接，另一端与中间联动件3412铰接。腿部连动杆35用于连接腿部组件1与座部联动组件34。本实施例当腿部组件1向前伸展时，同时带动座框31和座部联动组件34向前移动。在第一调节阶段，中间联动件3412保持不动，座框31通过第一连框杆3411和第二连框杆3413的转动随腿部组件1的伸展向前平移至腿部组件1完全伸展。
具体地，座部联动组件34还包括平移连杆组件342和侧板安装件343，平移连杆组件342转动连接在座框联动组件341和侧板安装件343之间，侧板安装件343用于与座椅扶手连接。平移连杆组件342包括第一摇杆3421、第一中间连杆3422、第二中间连杆3423和第二摇杆3424；第一摇杆3421和第二摇杆3424都铰接在侧板安装件343上，第一中间连杆3422和第二中间连杆3423铰接在第一摇杆3421与第二摇杆3424之间。
具体地，平移连杆组件342还包括第一连接杆3425和第二连接杆3426，第一连接杆3425一端与第一摇杆3421铰接，另一端与中间联动件3412铰接，第二连接杆3426的一端分别与第一中间连杆3422和第二摇杆3424铰接，另一端与中间联动件3412铰接。在第二调节阶段，座框联动组件341通过平移连杆组件342的运动，倾斜向前和向上平移。
具体地，本实施例座椅支架还包括靠背组件7，靠背组件7转动连接在座框31与侧板安装件343之间。靠背组件7用于与座椅靠背连接，以调节座椅靠背角度。靠背组件7包括靠背安装件71、座框连接部72、靠背连接件73和靠背限位件74；座框连接部72的中部与座框31连接，座框连接部72的两端分别与靠背安装件71和靠背限位件74铰接，靠背连接件73一端与靠背安装件71的中部铰接，另一端与靠背限位件74铰接，靠背限位件74通过一连接杆与侧板安装件343的后端铰接；在第二调节阶段过程中，腿部组件和座框整体倾斜向上移动，当座框连接部72随座框31倾斜向上移动的过程中，靠背限位件74和靠背连接件73带动靠背安装件71向后转动。
具体地，座部联动组件34的侧板安装件343的后端设置有驱动固定杆6，驱动组件4设置在驱动横杆21与驱动固定杆6之间。驱动组件4包括直线推动件41，驱动横杆21的中部设置有连杆件5，直线推动件41通过转轴42与连杆件5转动连接。直线推动件41可以为直线滑块或推杆。本实施例驱动组件4为推杆电机，直线推动件41为直线推杆，驱动组件4的电机端连接在驱动固定杆6的中部，驱动组件4的电机驱动直线推动件41伸缩移动，从而带动传动组件2、腿部组件1、座部组件3和靠背组件7移动。在另一些实施例中，驱动组件4可以为滑块电机，直线推动件41为直线滑块。在驱动组件4的驱动下，本实施例座椅单元可以实现坐姿位置、伸展位置和躺姿位置三种位置姿态，坐姿位置时腿部组件1和靠背组件均收缩到极限位置；伸展姿位置时，腿部组件1向前伸展到极限位置，靠背组件与座框31夹角保持与坐姿位置相同；躺姿位置时，腿部伸缩组件伸展到极限位置，靠背组件向后转动到极限位置。
本实施例还提供一种座椅，包括座椅靠背、座椅扶手和座椅支架，座椅支架通过两侧的侧板安装件343与座椅扶手的内侧面固定连接，座椅靠背与座椅支架的靠背组件7连接。
具有本实施例腿部组件的座椅支架可以应用于具有落地式座椅扶手的座椅中，现有扶手着地的沙发座椅多为家用，商务类居多，对座椅结构稳定性、座椅的外观和安全性要求都比较高。本实施例，腿部组件与传动组件连接并设置在座椅支架的中部，当座椅受力时，因为传动组件的双横杆结构具有更好的稳定性和支撑性，可以避免坐垫下沉造成腿部组件受力变形。本实施例座椅从两侧面都很难观察和触碰到腿部组件的结构，可以有效避免腿部组件在运动过程 中产生夹到异物或手部的风险，且伸缩过程中腿部组件居中隐藏在座椅支架下方，使得成品座椅整体性更强，座椅外观更加美观。本实施例腿部组件与横杆式传动组件的连接便于腿部组件的安装定位和拆卸，将腿部组件拆卸后更便于座椅支架的包装和运输。
上述说明已经充分揭露了本发明的具体实施方式。需要指出的是，熟悉该领域的技术人员对本发明的具体实施方式所做的任何改动均不脱离本发明的权利要求书的范围。相应地，本发明的权利要求的范围也并不仅仅局限于前述具体实施方式。

Claims (14)

  1. 一种腿部居中式支架结构，其特征在于，包括腿部组件(1)和传动组件(2)，所述传动组件(2)用于连接在座椅的两侧座部组件(3)之间，所述传动组件(2)包括驱动横杆(21)和传动横杆(22)；
    所述腿部组件(1)包括腿部传动杆(11)和腿部驱动杆(12)，所述腿部传动杆(11)连接在所述传动横杆(22)的两端部之间，所述腿部驱动杆(12)连接在所述驱动横杆(21)的两端部之间；所述驱动横杆(21)的中部用于与驱动组件(4)的输出端连接，并在所述驱动组件(4)的驱动下转动向前或向后移动以带动所述腿部组件(1)伸缩。
  2. 根据权利要求1所述的一种腿部居中式支架结构，其特征在于，所述传动横杆(22)与所述驱动横杆(21)平行设置，且靠近所述座椅组件(3)的前端，所述传动横杆(22)在第一固定点(221)处与所述腿部传动杆(11)连接，所述驱动横杆(21)在第二固定点(211)处与所述腿部驱动杆(12)连接。
  3. 根据权利要求1所述的一种腿部居中式支架结构，其特征在于，所述腿部组件(1)还包括第一中间杆(13)和第二中间杆(14)；
    所述第一中间杆(13)与所述腿部传动杆(11)铰接，所述第二中间杆(14)上设置有第一铰接点(141)和第二铰接点(142)，所述第二中间杆(14)在所述第一铰接点(141)处与所述腿部驱动杆(12)铰接，所述第二中间杆(14)在所述第二铰接点(142)处与所述腿部传动杆(11)的中部交叉铰接，所述第一铰接点(141)、第二铰接点(142)、第一固定点(221)和第二固定点(211)的连线成四边形。
  4. 根据权利要求2所述的一种腿部居中式支架结构，其特征在于，所述第一固定点(221)和第二固定点(211)的连线与水平面的夹角不小于0°。
  5. 根据权利要求3所述的一种腿部居中式支架结构，其特征在于，所述第二中间杆(14)上设置有限位件(143)，所述腿部传动杆(11)的下边缘设置有与所述限位件(143)相配合的第一限位面(111)，当所述第一限位面(111)与所述限位件(143)相抵触时，所述腿部组件(1)的当前位置为所述腿部组件(1)伸展的极限位置。
  6. 根据权利要求3所述的一种腿部居中式支架结构，其特征在于，所述第 二中间杆(14)所在平面到两侧所述座部组件(3)的座框(31)内侧面的垂直距离都不小于150mm。
  7. 根据权利要求3所述的一种腿部居中式支架结构，其特征在于，所述腿部组件(1)还包括主搁脚件(15)，所述第一中间杆(13)和第二中间杆(14)远离所述腿部传动杆(11)和腿部驱动杆(12)的一端分别与所述主搁脚件(15)铰接。
  8. 根据权利要求7所述的一种腿部居中式支架结构，其特征在于，所述腿部组件(1)还包括副搁脚件(16)和搁脚连杆(17)，所述副搁脚件(16)与所述主搁脚件(15)铰接，所述搁脚连杆(17)一端与所述副搁脚件(16)的中部铰接，另一端与所述第一中间杆(13)铰接。
  9. 一种座椅支架，其特征在于，包括座部组件(3)和如权利要求1-8任一项所述的腿部居中式支架结构，所述座部组件(3)包括座框(31)、第一连腿杆(32)、第二连腿杆(33)和座部联动组件(34)，所述座部联动组件(34)转动连接在所述座框(31)与座椅扶手之间，所述座部联动组件(34)用于支撑带动所述座框(31)相对于所述座椅扶手移动；
    所述第一连腿杆(32)一端在第一端点(321)处与所述座框(31)铰接，另一端在第二端点(322)处与所述传动横杆(22)连接；所述第二连腿杆(33)一端在第三端点(331)处与所述座框(31)的前端铰接，另一端在第四端点(332)处与所述驱动横杆(21)连接，所述第一端点(321)、第二端点(322)、第四端点(332)和第三端点(331)的连线成四边形。
  10. 根据权利要求9所述的一种座椅支架，其特征在于，所述座部联动组件(34)包括座框联动组件(341)，所述座框联动组件(341)包括依次铰接的第一连框杆(3411)、中间联动件(3412)和第二连框杆(3413)；
    所述第一连框杆(3411)和第二连框杆(3413)都铰接在所述座框(31)上，所述第一连框杆(3411)、中间联动件(3412)、第二连框杆(3413)和所述座框(31)形成四连杆机构。
  11. 根据权利要求10所述的一种座椅支架，其特征在于，所述座部组件(3)还包括腿部连动杆(35)，所述腿部连动杆(35)一端与所述第二连腿杆(33)铰接，另一端与所述中间联动件(3412)铰接。
  12. 根据权利要求11所述的一种座椅支架，其特征在于，所述座部联动组 件(34)还包括平移连杆组件(342)和侧板安装件(343)，所述平移连杆组件(342)转动连接在所述座框联动组件(341)和所述侧板安装件(343)之间，所述侧板安装件(343)用于与座椅扶手连接。
  13. 根据权利要求12所述的一种座椅支架，其特征在于，所述平移连杆组件(342)包括第一摇杆(3421)、第一中间连杆(3422)、第二中间连杆(3423)和第二摇杆(3424)；
    所述第一摇杆(3421)和第二摇杆(3424)都铰接在所述侧板安装件(343)上，所述第一中间连杆(3422)和第二中间连杆(3423)铰接在所述第一摇杆(3421)与所述第二摇杆(3424)之间。
  14. 根据权利要求13所述的一种座椅支架，其特征在于，所述平移连杆组件(342)还包括第一连接杆(3425)和第二连接杆(3426)，所述第一连接杆(3425)一端与所述第一摇杆(3421)铰接，另一端与所述中间联动件(3412)铰接，所述第二连接杆(3426)的一端分别与所述第一中间连杆(3422)和第二摇杆(3424)铰接，另一端与所述中间联动件(3412)铰接。
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CN113796687A (zh) * 2021-08-18 2021-12-17 锐迈机械科技（吴江）有限公司 一种座椅腿部斜收装置、座椅支架及座椅单元
CN116035378A (zh) * 2022-09-16 2023-05-02 锐迈科技股份有限公司 一种腿部居中式支架结构及座椅支架

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