WO2023019925A1 - 一种座椅腿部斜收装置、座椅支架及座椅单元 - Google Patents

一种座椅腿部斜收装置、座椅支架及座椅单元 Download PDF

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Publication number
WO2023019925A1
WO2023019925A1 PCT/CN2022/080372 CN2022080372W WO2023019925A1 WO 2023019925 A1 WO2023019925 A1 WO 2023019925A1 CN 2022080372 W CN2022080372 W CN 2022080372W WO 2023019925 A1 WO2023019925 A1 WO 2023019925A1
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WO
WIPO (PCT)
Prior art keywords
footrest
seat
frame
hinged
rod
Prior art date
Application number
PCT/CN2022/080372
Other languages
English (en)
French (fr)
Inventor
李晓鸿
张小强
吕战征
李元坤
Original Assignee
锐迈机械科技（吴江）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202121940526.XU external-priority patent/CN216316590U/zh
Priority claimed from CN202121962208.3U external-priority patent/CN216797049U/zh
Priority claimed from CN202110949721.7A external-priority patent/CN113796687B/zh
Application filed by 锐迈机械科技（吴江）有限公司 filed Critical 锐迈机械科技（吴江）有限公司
Priority to EP22857245.9A priority Critical patent/EP4368066A1/en
Publication of WO2023019925A1 publication Critical patent/WO2023019925A1/zh
Priority to US18/427,856 priority patent/US20240164527A1/en

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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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • A47C1/0355—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest actuated by linkages, e.g. lazy-tongs mechanisms
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/0342—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movable backrest-seat unit or back-rest
    • A47C1/0345—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movable backrest-seat unit or back-rest characterised by foot-rests actuated by lazy-tongs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/86—Parts or details for beds, sofas or couches only not fully covered in a single one of the sub-groups A47C17/02, A47C17/04, A47C17/38, A47C17/52, A47C17/64, or A47C17/84; Drawers in or under beds
    • 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
    • A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
    • A47C7/5068—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation actuated by linkages

Definitions

  • the invention relates to the technical field of sofa brackets, in particular to a seat leg reclining device, a seat bracket and a seat unit.
  • Functional sofas and seats are becoming more and more common in daily life.
  • functional seating include recliners, armchairs, sofas, modular seating, cinema seating and seating units with movable seats.
  • Functional seat with telescoping device can be adjusted between sitting, resting and lying positions via telescoping device.
  • the existing seat unit has the following defects: when it is designed as a seat style with high feet and low seat height, the footrests of the leg components are easy to rub against the ground, which affects the use of users; the space at the bottom of the seat frame is narrow and difficult to clean ;In the contracted sitting position, the footrest of the leg assembly shrinks in front of the seat, making the front of the seat soft and thick, and the aesthetics are poor, and the calf cannot be placed under the seat when sitting in a sitting position; when the legs and the backrest are fully extended In the reclining position, the height of the footrest is usually lower than the height of the backrest. The user will feel a slip when lying down, and cannot completely relax the body. Lying for a long time will cause low back pain. Therefore, it is necessary to provide a seat support structure on the basis of the prior art, so that the front of the seat is thinner, the seat frame has a larger space, and the support structure can completely relax the body.
  • the purpose of this application is to provide a seat leg reclining device, a seat frame and a seat unit, which can make the rear seat retractable by adjusting the structure of the seat frame mounting frame and the leg assembly.
  • the vertical height of the front is reduced, the thickness of the seat is thinner, and the inclination angle of the seat is increased when lying down.
  • the space at the bottom of the seat frame is increased, so that the height of the legs of the seat can be increased and the bottom can be cleaned easily.
  • the present application provides a reclining device for seat legs, which includes a leg assembly hinged at the front end of the seat frame mounting frame of the seat;
  • the leg assembly includes a footrest driving rod, a footrest linkage rod, a first footrest linkage, a second footrest linkage and a footrest member, and the footrest driving rod and the footrest linkage rod are respectively It is hinged with the front end of the seat frame mounting bracket, one end of the first footrest link is hinged with the footrest drive rod, and the other end is hinged with the end of the footrest, and the second footrest link One end is hinged with the footrest linkage rod, and the other end is hinged with the middle part of the footrest;
  • the footrest includes a footrest mounting surface for mounting a footrest, and when the leg assembly shrinks to a limit position, the footrest mounting surface shrinks below the seat frame mounting frame and is inclined relative to the horizontal plane.
  • the included angle between the footrest installation surface and the horizontal plane is 20°-26°.
  • the distance from the connection point between the second footrest link and the footrest to the installation surface of the footrest is smaller than the distance from the connection point between the first footrest link and the footrest to the Distance from the mounting surface of the footrest.
  • a limiting member is provided at one end of the first footrest connecting rod close to the footrest member, and a first limiting surface matched with the limiting member is arranged on the second footrest connecting rod, When the first limiting surface interferes with the limiting member, the current position of the leg assembly is the limit position where the leg assembly is stretched.
  • the lower edge of the footrest is provided with a second limit surface that matches the limit piece, and when the second limit surface interferes with the limit piece, the legs
  • the current position of the assembly is the limit position of the contraction of the leg assembly.
  • the present application also provides a seat bracket, which includes a seat frame mounting frame, a seat linkage assembly, a drive connector and a leg reclining device, and the leg reclining device includes a leg hinged at the front end of the seat frame mounting frame a seat assembly, the seat linkage assembly is rotatably connected below the seat frame mounting frame, and the drive link is connected to the end of the seat linkage assembly away from the leg tilting device;
  • the leg assembly includes a footrest driving rod, a footrest linkage rod, a first footrest linkage, a second footrest linkage and a footrest member, and the footrest driving rod and the footrest linkage rod are respectively It is hinged with the front end of the seat frame mounting bracket, one end of the first footrest link is hinged with the footrest drive rod, and the other end is hinged with the end of the footrest, and the second footrest link One end is hinged with the footrest linkage rod, and the other end is hinged with the middle part of the footrest; the footrest includes a footrest mounting surface for installing a footrest, when the leg assembly shrinks to the limit position , the mounting surface of the footrest shrinks below the mounting frame of the seat frame and is inclined relative to the horizontal plane;
  • the inside of the seat frame mounting frame is provided with a mounting platform, the height of the mounting platform is lower than the upper edge of the seat frame mounting frame, and the plane where the mounting platform is located is the seat frame mounting surface; when the seat bracket When retracted to the limit position, the vertical distance H1 between the highest point of the seat frame mounting bracket on the seat frame mounting surface and the lowest point of the drive connector is not greater than 270mm.
  • the vertical distance H2 between the highest point of the seat frame mounting frame on the seat frame mounting surface and the highest point of the footrest mounting surface is not greater than 50mm .
  • the seat linkage assembly includes a leg link and a seat frame linkage assembly, the seat linkage assembly is connected to the leg assembly through the leg link, and the seat frame linkage assembly includes sequentially hinged first A connecting frame rod, an intermediate connecting rod and a second connecting frame rod;
  • the first connecting frame rod and the second connecting frame rod are respectively hinged to the seat frame mounting frame, and the first connecting frame rod, the middle connecting rod, the second connecting frame rod and the seat frame mounting frame form a quadrilateral connection A rod mechanism, the connecting leg rod is hinged to the intermediate linkage rod.
  • the seat linkage assembly also includes a side plate linkage assembly, the side plate linkage assembly includes a mounting side plate and a translation link assembly, and the translation link assembly is hinged between the seat frame linkage assembly and the installation between the side panels.
  • the translation link assembly includes a first connecting rod, a second connecting rod, a first rocker, a first intermediate rod, a second intermediate rod and a second rocker;
  • first connecting rod is hinged to the first rocker, and the other end is hinged to the middle linkage rod.
  • One end of the second connecting rod is hinged to the second rocker, and the other end is hinged to the middle linkage rod. hinged;
  • the first rocker and the second rocker are respectively hinged on the front end and the middle of the installation side plate, and the first middle rod and the second middle rod are hinged on the first rocker and the second rocker between.
  • the present application also provides a seat unit, including a seat frame mounting frame, a seat linkage assembly, a drive connector, a leg reclining device and a backrest assembly, and the leg reclining device includes a The leg assembly at the front end, the seat linkage assembly is rotatably connected under the seat frame mounting frame, and the drive link is connected to the end of the seat linkage assembly away from the leg tilting device; the backrest assembly includes a backrest mount for attaching and adjusting the seat back;
  • the leg assembly includes a footrest driving rod, a footrest linkage rod, a first footrest linkage, a second footrest linkage and a footrest member, and the footrest driving rod and the footrest linkage rod are respectively It is hinged with the front end of the seat frame mounting bracket, one end of the first footrest link is hinged with the footrest drive rod, and the other end is hinged with the end of the footrest, and the second footrest link One end is hinged with the footrest linkage rod, and the other end is hinged with the middle part of the footrest; the footrest includes a footrest mounting surface for installing a footrest;
  • the leg assembly shrinks to the limit position
  • the footrest mounting surface shrinks to the bottom of the seat frame mounting frame, and is inclined relative to the horizontal plane; when the seat unit is lying When in the posture position, the highest point of the seat frame mounting frame is higher than the highest point of the backrest mounting part.
  • the backrest assembly also includes a seat frame connection part, a backrest connection part and a backrest limiting part;
  • the middle part of the seat frame connecting part is fixedly connected with the seat frame mounting frame, the two ends of the seat frame connecting part are respectively hinged with the backrest mounting part and the backrest limiting part, and one end of the backrest connecting part is connected to the
  • the middle part of the backrest mounting part is hinged, and the other end is hinged with the backrest limiter, and the backrest limiter is hinged with the rear end of the installation side plate through a connecting rod;
  • the backrest limiting part and the backrest connection part drive the backrest installation part to rotate backward.
  • the height difference H3 between the foot plate installation surface and the highest point of the backrest installation part is not less than 300mm.
  • the maximum adjustment angle of the backrest mounting part is not less than 45°.
  • the angle ⁇ between the centerline of the backrest mounting part and the horizontal plane is not greater than 20°.
  • the present invention has the following beneficial effects:
  • the structure of the leg assembly of this application is simple and compact, and the footrest can be completely obliquely received at the bottom of the seat frame. Smaller, the thickness of the seat looks thinner from the front, and the space at the bottom of the seat frame is increased, making it easier to clean.
  • the seat frame mounting platform is arranged on the lower edge of the inner wall of the seat frame mounting frame, so that the seat frame can be sunk and installed between the seat frame mounting frames on both sides, and the seat depth is increased.
  • the vertical height of the rear seat frame installation frame and the leg assembly is compressed after the seat bracket shrinks, which minimizes the space occupied after shrinking, and can be used for seat styles with high legs and low seat height.
  • the present application improves the structure of the leg assembly and the backrest assembly, so that the extended height of the footrest, the inclination angle of the seat frame mounting bracket and the adjustment angle of the backrest mounting piece are all correspondingly increased, so that when the seat is in the lying position, the user's The feet and head can maintain a zero-gravity feeling that is roughly level or higher than the head, improving the comfort of lying posture.
  • Fig. 1 is the structural representation of seat bracket of the embodiment of the present invention
  • Fig. 2 is a schematic structural diagram of the stretched position of the seat bracket of the embodiment of the present invention.
  • Fig. 3 is a schematic structural diagram of a seat bracket in a lying position according to an embodiment of the present invention
  • Fig. 4 is a schematic structural diagram of a side plate linkage assembly according to an embodiment of the present invention.
  • Fig. 5 is a schematic diagram of the structure during the stretching process of the seat bracket of the embodiment of the present invention.
  • Fig. 6 is the front view of the seat unit of Embodiment 1 of the present invention.
  • Fig. 7 is a side view of the seat unit of Embodiment 1 of the present invention.
  • Fig. 8 is a schematic diagram of the lying position of the seat bracket according to Embodiment 2 of the present invention.
  • Fig. 9 is another side view of Fig. 8.
  • Fig. 10 is a side view of the seat unit according to Embodiment 2 of the present invention.
  • reference numerals are: 10-seat frame, 1-seat frame mounting frame, 11-installation platform, 111-seat frame mounting surface, 2-leg assembly, 21-footrest driving rod, 22-footrest connection Moving rod, 23-the first footrest link, 231-limiting part, 24-the second footrest link, 241-the first limit surface, 25-footrest, 251-footrest mounting surface, 252- The second limit surface, 3-seat linkage assembly, 31-leg link, 32-seat frame linkage assembly, 321-first link frame bar, 322-middle link link, 323-second link frame bar, 33- Side plate linkage assembly, 331-side plate installation, 332-translation link assembly, 333-first connecting rod, 334-second connecting rod, 335-first rocker, 336-first middle rod, 337-second Middle rod, 338-second rocker, 4-seat frame, 5-armrest frame, 6-footrest, 7-seat leg, 8-backrest assembly, 81-backrest installation, 82-seat frame connection, 83
  • references herein to "one embodiment” or “an embodiment” refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention.
  • the orientation or positional relationship indicated by the terms “upper”, “lower”, “front”, “rear” etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of these features. Also, the terms “first”, “second”, etc. are used to distinguish similar items and not necessarily to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.
  • installation and “connection” 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, and it can be the internal communication of two components.
  • installation and “connection” 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, and it can be the internal communication of two components.
  • the seat can be adjusted between the sitting position, the extended position and the lying position.
  • the adjustment of the seat from the sitting position to the stretched position is the first adjustment stage
  • the adjustment of the seat from the stretched position to the lying position is the second adjustment stage.
  • the seat back angle remains basically unchanged, and the leg assembly is stretched forward to the limit position; in the second adjustment stage, the leg assembly and the seat frame move upwards as a whole, and the seat back turns backward , the angle between the backrest and the seat frame increases until the final reclining position is adjusted.
  • the present embodiment 1 provides a reclining device for seat legs, which includes a leg assembly 2 hinged at the front end of the seat frame mounting frame 1, the leg assembly 2 includes a foot rest driving rod 21, a rest
  • the foot linkage rod 22, the first footrest linkage rod 23, the second footrest linkage rod 24 and the footrest member 25, the footrest driving rod 21 and the footrest linkage rod 22 are respectively hinged with the front end of the seat frame mounting frame 1,
  • One end of the first footrest connecting rod 23 is hinged with the footrest driving rod 21, and the other end is hinged with the end of the footrest 25.
  • One end of the second footrest connecting rod 24 is hinged with the footrest linkage rod 22, and the other end is hinged with the footrest.
  • the middle part of piece 25 is hinged;
  • the footrest 25 includes a footrest installation surface 251 for installing the footrest 6.
  • the footrest installation surface 251 shrinks below the seat frame mounting frame 1 and is inclined relative to the horizontal plane.
  • the included angle between the footrest installation surface 251 and the horizontal plane is 20°-26°. Preferably, it may be 20°, 23°, 25° or 26°.
  • the distance from the connecting point of the second footrest link 24 and the footrest 25 to the footrest installation surface 251 is less than the distance from the connection point of the first footrest link 23 and the footrest 25 to the footrest installation surface 251, so that After the foot piece 22 is contracted, it is inclined relative to the horizontal plane, and the space occupied by the leg oblique device in the vertical direction is reduced.
  • a limiting member 231 is disposed at an end of the first footrest link 23 close to the footrest member 25 .
  • the second footrest link 24 is provided with a first limit surface 241 that cooperates with the limit piece 231.
  • the current position of the leg assembly 2 is the leg.
  • the lower edge of the footrest 25 is provided with a second limiting surface 252 that cooperates with the limiting member 231.
  • the second limiting surface 252 interferes with the limiting member 231, the current position of the leg assembly 2 is the leg. Component 2 retracted extreme position.
  • the limiting member 231 cooperates with and interferes with the first limiting surface 241 or the second limiting surface 252 to limit the position and prevent the footrest from loosening. On the one hand, it can limit the position to prevent excessive extension or contraction of the leg assembly, so that it cannot be retracted or unfolded smoothly; on the other hand, it can prevent the footrest and the footrest from being easily loosened without shrinking to the predetermined limit position.
  • the footrest is completely obliquely received under the seat frame mounting frame.
  • the front of the finished seat of this application is lighter and thinner.
  • Shrinking the vertical height of the rear seat frame mounting frame 1 and the leg assembly 2 is compressed, reducing the thickness of the shrunk bracket and the occupied space as much as possible, and improving the space utilization rate, thereby increasing the space under the seat frame after the seat is fully assembled. It can be convenient for cleaning devices such as mops and sweeping robots.
  • the legs can be placed obliquely inward to increase the sitting experience.
  • This embodiment also provides a seat bracket, including a seat frame mounting frame 1, a seat linkage assembly 3, a drive connector 9 and a leg tilting device, the seat linkage assembly 3 is rotatably connected to the bottom of the seat frame mounting frame 1, The driving connector 9 is connected to one end of the seat linkage assembly 3 away from the leg tilting device; the inner side of the seat frame mounting frame 1 is provided with a mounting platform 11, and the height of the mounting platform 11 is lower than the upper edge of the seat frame mounting frame 1.
  • the plane where 11 is located is the seat frame installation surface 111; as shown in Figure 1, when the seat bracket shrinks to the limit position, the highest point of the seat frame installation frame 1 on the seat frame installation surface 111 is perpendicular to the lowest point of the drive connector 9
  • the distance H1 in the direction is not greater than 270mm, preferably, it may be 270mm, 260mm, 250mm, 230mm, 220mm or 200mm.
  • the installation platform 11 is arranged on the lower edge of the seat frame installation frame 1, and four installation platforms 11 are arranged along the length direction of the seat frame installation frame 1.
  • the seat frame can be fixedly installed on the installation platform 11 by fasteners such as bolts, nuts or rivets.
  • the height of the installation platform 11 of the present application is reduced, so that the seat frame can be installed by sinking, and the seat depth is increased.
  • the seat height remains unchanged and the seat frame installation surface is reduced, the height of the seat legs can also be increased, and the space under the seat frame can be increased.
  • it can also increase the thickness of the seat cushion soft bag and improve the comfort.
  • the vertical distance H2 between the highest point of the seat frame installation frame 1 on the seat frame installation surface 111 and the highest point of the footrest installation surface 251 in the vertical direction is not greater than 50 mm.
  • the vertical distance H2 between the highest point of the seat frame installation frame 1 on the seat frame installation surface 111 and the highest point of the footrest installation surface 251 in the vertical direction may be 50 mm, 45 mm or 40 mm. The smaller the distance H2 is, the smaller the thickness of the seat part is when viewed from the front of the seat after the leg assembly is shrunk.
  • the seat linkage assembly 3 in this embodiment includes a leg link 31 and a seat frame linkage assembly 32, the seat linkage assembly 3 is connected to the leg assembly 2 through the leg link 31, and the seat frame linkage assembly 32 includes the first connecting frame rod 321, the middle connecting rod 322 and the second connecting frame rod 323 which are sequentially hinged; wherein, the first connecting frame rod 321 and the second connecting frame rod 323 are respectively hinged with the seat frame mounting frame 1, and the first The connecting frame rod 321 , the middle connecting rod 322 , the second connecting frame rod 323 and the seat frame installation frame 1 form a quadrilateral connecting rod mechanism, and the middle connecting rod 322 is hinged to the connecting leg rod 31 .
  • the middle linkage rod 322 remains stationary, and the seat frame mounting frame 1 moves forward with the extension of the leg assembly 2 through the rotation of the first linkage rod 321 and the second linkage rod 323 Pan until Leg Assembly 2 is fully extended.
  • the seat linkage assembly 3 also includes a side plate linkage assembly 33, and the side plate linkage assembly 33 includes a mounting side plate 331 and a translation link assembly 332, and the translation link assembly 332 is hinged on the seat frame linkage assembly 32. And between the installation side plate 331. In the second adjustment stage, the seat frame linkage assembly 32 is tilted forward and upward in translation through the movement of the translation link assembly 332 .
  • the translation linkage assembly 332 includes a first connecting rod 333, a second connecting rod 334, a first rocking rod 335, a first intermediate rod 336, a second intermediate rod 337 and a second rocking rod 338; wherein, one end of the first connecting rod 333 It is hinged with the first rocker 335, and the other end is hinged with the middle linkage rod 322.
  • One end of the second connecting rod 334 is hinged with the second rocker 338, and the other end is hinged with the middle linkage rod 322; the first rocker 335 and the second rocker 338 are respectively hinged at the front end and the middle of the installation side plate 331 , and the first middle rod 336 and the second middle rod 337 are hinged between the first rocker 335 and the second rocker 338 .
  • the backrest assembly 8 also includes a backrest assembly 8, which is rotatably connected to the end of the seat frame mounting frame 1 away from the leg assembly 2, and is used for connecting with the seat back to adjust the backrest angle of the seat.
  • the backrest assembly 8 comprises a backrest mounting part 81, a seat frame connecting part 82, a backrest connecting part 83 and a backrest limiting part 84; Respectively hinged with the backrest mounting part 81 and the backrest limiting part 84, one end of the backrest connecting part 83 is hinged with the middle part of the backrest mounting part 81, and the other end is hinged with the backrest limiting part 84, and the backrest limiting part 84 is connected to the installation side through the connecting rod 85.
  • the rear end of the plate 331 is hinged; when the seat frame connecting part 82 moves upwards with the seat frame mounting frame 1, the backrest limiting part 84 and the backrest connecting part 83 drive the backrest mounting part 81 to rotate backward.
  • the leg assembly 2 in the first adjustment stage, the leg assembly 2 stretches forward, driving the seat frame installation frame 1 to move forward, the middle linkage rod 322 does not move, and the first connecting frame rod 321 and the second connecting frame rod 323 move forward. Rotate forward, at this time the angle between the seat frame and the backrest remains unchanged; in the second adjustment stage, the leg assembly 2, the seat frame mounting frame 1 and the seat frame linkage assembly 32 are tilted forward and upward as a whole, and the seat back is now facing The rear rotation adjustment increases the angle between the backrest and the seat frame.
  • the present embodiment also provides a seat unit, including two sets of seat frames 10 oppositely arranged, a drive assembly is arranged between the two sets of seat frames 10, and the drive assembly includes a drive cross bar and The fixed crossbar, the driving crossbar is arranged between the two opposite leg assemblies, the fixed crossbar is connected between the two opposite installation side plates 331 through the driving connector 9, and the driving crossbar is used for pushing with the driving source.
  • the rods are connected to drive the cross rod to drive the seat frame 10 to move between the sitting position and the lying position.
  • the driving assembly drives the leg assembly to extend through the driving cross bar, thereby driving the seat frame mounting frame, the seat linkage assembly 3 and the backrest assembly 8 to move.
  • the seat unit of this embodiment can realize the sitting position , Stretched position and lying position.
  • the leg assembly and the backrest assembly are retracted to the limit position; in the stretching position, the leg assembly is stretched forward to the limit position, and the angle between the backrest assembly and the seat frame is maintained. It is the same as the sitting position; in the lying position, the telescopic leg assembly is stretched to the limit position, and the backrest component is turned backward to the limit position.
  • the two seat brackets 10 of the seat unit are respectively fixedly connected to the inner surfaces of the two armrest frames 5 , and the seat frame 4 is arranged between the two seat frame installation frames 1 through the installation platform 11 .
  • the two seat brackets are mirror images and arranged at intervals, and are fixed on the armrest frame 5 through the installation side plate, and the seat frame 4 is installed on the installation platform in a sunken manner, and the height of the installation platform is lower than that of the seat frame installation frame. edge.
  • a footrest 6 is also included.
  • the footrest 6 is connected to the footrest installation surface 251 through fasteners.
  • the length L of the footrest 6 is not less than 200mm. Because the footrest in this embodiment can be obliquely received under the leg assembly 2, a longer footrest 6 can be installed.
  • the length L of the footrest 6 can be 200mm, 250mm, 260mm or 280mm on the basis that the footrest does not interfere with the ground during the telescopic process of the leg assembly.
  • the seat leg 7 is also included, the seat leg 7 is arranged under the armrest frame 5, and the height of the seat leg 7 is 120-150mm.
  • the height of the seat leg may be 120mm, 130mm or 150mm.
  • this embodiment ensures a comfortable sitting height, the height of the seat legs is higher, and the space at the bottom of the seat frame is increased. Due to the complex structure of the traditional seat bracket, it takes up a lot of space. The seat leg is only about 5mm, and the bottom of the seat is not easy to clean.
  • the seat frame of Embodiment 2 includes a seat frame mounting frame 1, a seat linkage assembly 3, a drive connector 9, a leg reclining device and a backrest assembly 8, and the leg reclining device includes The leg assembly 2 hinged at the front end of the seat frame mounting frame 1, the seat linkage assembly 3 is rotatably connected under the seat frame mounting frame 1, and the driving connector 9 is connected to the end of the seat linkage assembly 3 away from the leg tilting device;
  • the backrest assembly 8 includes a backrest mounting part 81, which is used for connecting and adjusting the seat back;
  • the leg assembly 2 includes a footrest driving rod 21, a footrest linkage rod 22, a first footrest connecting rod 23, a second footrest connecting rod 24 and a footrest member 25, and the footrest driving rod 21 and the footrest
  • the linkage rod 22 is hinged with the front end of the seat frame mounting frame 1 respectively, one end of the first footrest link 23 is hinged with the footrest driving rod 21, the other end is hinged with the end of the footrest 25, and the second footrest link 24 One end is hinged with the footrest linkage rod 22, and the other end is hinged with the middle part of the footrest 25;
  • the footrest 25 includes a footrest mounting surface 251 for installing the footrest 6;
  • the leg assembly 2 shrinks to the limit position, the footrest mounting surface 251 shrinks to the bottom of the seat frame mounting frame 1, and is inclined relative to the horizontal plane; when the seat frame is in the lying position, the seat frame is installed The highest point of the frame 1 is higher than the highest point of the backrest mount 81 .
  • the backrest assembly 8 also includes a seat frame connection part 82, a backrest connection part 83 and a backrest limiting part 84; It is hinged with the backrest mounting part 81 and the backrest limiting part 84.
  • One end of the backrest connecting part 83 is hinged with the middle part of the backrest mounting part 81, and the other end is hinged with the backrest limiting part 84.
  • the backrest limiting part 84 is connected to the installation side plate through the connecting rod 85.
  • the rear end of 331 is hinged; when the seat frame connecting portion 82 and the seat frame mounting frame 1 tilt forward and move upwards, the backrest limiting part 84 and the backrest connecting part 83 drive the backrest mounting part 81 to rotate backward.
  • the seat frame installation frame 1 moves upwards obliquely, and the backrest installation part 81 rotates backward and lowers.
  • the backrest assembly 8 and the leg assembly 2 are adjusted to the limit position, the seat is in a lying position.
  • the height difference H3 between the foot plate mounting surface 251 and the highest point of the backrest mounting part 81 is not less than 300 mm.
  • the height difference H3 between the footboard installation surface 251 and the highest point of the backrest installation part 81 may be 300mm, 310mm, 320mm or 350mm.
  • the height difference between the mounting surface of the footboard and the mounting part of the backrest is increased, that is, the height of the footrest of the seat is increased in the lying position, so that the feet and the head can be basically in a horizontal position when lying flat, achieving a space-like space.
  • the comfort of zero gravity achieves the purpose of improving blood circulation, relieving low back pain, and relaxing the body and mind.
  • the leg assembly 2 and the seat linkage assembly 3 are tilted upwards and translated, the inclination angle of the seat frame installation frame 1 relative to the horizontal plane increases, and the backrest installation part 81 is connected to the backrest stopper 84 Part 83 drives the relative seat frame mounting frame 1 to rotate backward, and the angle between the backrest mounting part and the seat frame mounting frame increases.
  • the maximum adjustment angle of the backrest mounting part 81 in the second adjustment stage is not less than 45°.
  • the angle variation range of the backrest mounting part 81 in the second adjustment stage may be 45°, 48°, 50°, 52°, 55° or 60°.
  • the angle change of the backrest mounting part 81 in the second adjustment stage is 50°, and the angle between the backrest mounting part 81 and the seat frame mounting frame 1 is adjusted from 117° to 166°.
  • the maximum adjustment angle of the seat frame mounting bracket 1 in the second adjustment stage is not less than 8°, preferably 8°, 10°, 12° or 15°.
  • the angle change of the seat frame mounting frame 1 is 10°, and the included angle between the seat frame mounting frame 1 and the horizontal plane is adjusted from 13° to 23°.
  • the angle ⁇ between the center line of the backrest mounting part 81 and the horizontal plane is not greater than 20°, that is, when the seat is in the reclining position, the angle ⁇ between the seat back and the horizontal plane is not greater than 20°.
  • the included angle ⁇ may be 20°, 18°, or 16°.
  • the seat back 100 of the seat unit of the present embodiment 2 includes a backrest trailing edge 101.
  • the plane perpendicular to the horizontal plane where the backrest trailing edge 101 is located is the initial plane.
  • the backrest The movement of the trailing edge 101 does not exceed the initial plane.
  • the seat linkage assembly drives the backrest assembly to tilt and move forward, and the distance is greater than or equal to the distance caused by the backward rotation of the seat back, so that the seat back can be placed against the wall with zero gap, which is more economical. space.
  • the leg assembly of the present application is simple and compact in structure, the footrest can be completely obliquely received at the bottom of the seat frame, and the seat frame and sinking are combined with the oblique collection of the footrest to make the sitting posture
  • the vertical size of the seat frame and the leg assembly is smaller in the normal state, the thickness of the seat part is thinner from the front view, and the space at the bottom of the seat frame is increased, making it easy to clean.
  • the seat frame installation platform of the present application is arranged on the lower edge of the inner wall of the seat frame mounting frame, so that the seat frame can be sunk and installed between the seat frame mounting frames on both sides, and the seat depth is increased.
  • the vertical height of the rear seat frame installation frame and the leg assembly is compressed after the seat bracket shrinks, which minimizes the space occupied after shrinking, and can be used for seat styles with high legs and low seat height.
  • the present application improves the structure of the leg assembly and the backrest assembly, so that the extended height of the footrest, the inclination angle of the seat frame mounting bracket and the adjustment angle of the backrest mounting piece are all correspondingly increased, so that when the seat is in the lying position, the user's The feet and head can maintain a zero-gravity feeling that is roughly level or higher than the head, improving the comfort of lying posture.

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Abstract

一种座椅腿部斜收装置、座椅支架及座椅单元，包括铰接在座框安装架（1）前端的腿部组件（2），腿部组件（2）的搁脚驱动杆（21）和搁脚连动杆（22）分别与座框安装架（1）的前端铰接，第一搁脚连杆（23）一端与搁脚驱动杆（21）铰接，另一端与搁脚件（25）的端部铰接，第二搁脚连杆（24）一端与搁脚连动杆（22）铰接，另一端与搁脚件（25）的中部铰接；搁脚件（25）包括用于安装搁脚板（6）的搁脚板安装面（251），当腿部组件（2）收缩至极限位置时，搁脚板安装面（251）收缩至座框安装架（1）下方，且相对水平面倾斜。

Description

一种座椅腿部斜收装置、座椅支架及座椅单元 技术领域
本发明涉及沙发支架技术领域，特别涉及一种座椅腿部斜收装置、座椅支架及座椅单元。
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：当设计为高支脚低座高的座椅款式时，腿部组件的搁脚件容易与地面擦碰，影响用户的使用；座框底部空间狭小，很难清理；在收缩的坐姿位置，腿部组件的搁脚板收缩在座椅前方，使得座椅前部软包厚重，美观性差，且坐姿时小腿不能斜放到座椅下方；在腿部和靠背完全伸展的躺姿位置，搁脚部高度通常低于靠背高度，使用者在在躺姿时会有下滑的感觉，不能使身体完全放松，长时间躺座会造成腰背疼痛。因此有必要在现有技术的基础上提供一种座椅支架结构，使得座椅前方厚度更薄、座框下方具有更大空间且可以使身体完全放松的支架结构。
发明内容
针对现有技术的上述问题，本申请的目的在于提供一种座椅腿部斜收装置、座椅支架及座椅单元，能够通过调整座框安装架和腿部组件的结构使得收缩后座椅正面的垂直高度减小，座部厚度更薄，躺姿时座椅的倾斜角度增加，同时座框底部空间增加，使可以增加座椅支脚高度和方便底部清洁。
为了解决上述问题，本申请提供一种座椅腿部斜收装置，包括铰接在座椅的座框安装架前端的腿部组件；
所述腿部组件包括搁脚驱动杆、搁脚连动杆、第一搁脚连杆、第二搁脚连杆和搁脚件，所述搁脚驱动杆和所述搁脚连动杆分别与所述座框安装架的前端 铰接，所述第一搁脚连杆一端与所述搁脚驱动杆铰接，另一端与所述搁脚件的端部铰接，所述第二搁脚连杆一端与所述搁脚连动杆铰接，另一端与所述搁脚件的中部铰接；
所述搁脚件包括用于安装搁脚板的搁脚板安装面，当所述腿部组件收缩至极限位置时，所述搁脚板安装面收缩至所述座框安装架下方，且相对水平面倾斜。
进一步地，当所述腿部组件收缩至极限位置时，所述搁脚板安装面与水平面的夹角为20°-26°。
进一步地，所述第二搁脚连杆与所述搁脚件的连接点到所述搁脚板安装面的距离小于所述第一搁脚连杆与所述搁脚件的连接点到所述搁脚板安装面的距离。
进一步地，所述第一搁脚连杆靠近所述搁脚件的一端设置有限位件，所述第二搁脚连杆上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，所述搁脚件的下边缘上设置有与所述限位件相配合的第二限位面，当所述第二限位面与所述限位件抵触时，所述腿部组件的当前位置为所述腿部组件收缩的极限位置。
本申请还提供一种座椅支架，包括座框安装架、座部联动组件、驱动连接件和腿部斜收装置，所述腿部斜收装置包括铰接在座椅座框安装架前端的腿部组件，所述座部联动组件转动连接在所述座框安装架的下方，所述驱动连接件连接在所述座部联动组件远离所述腿部斜收装置的一端；
所述腿部组件包括搁脚驱动杆、搁脚连动杆、第一搁脚连杆、第二搁脚连杆和搁脚件，所述搁脚驱动杆和所述搁脚连动杆分别与所述座框安装架的前端铰接，所述第一搁脚连杆一端与所述搁脚驱动杆铰接，另一端与所述搁脚件的端部铰接，所述第二搁脚连杆一端与所述搁脚连动杆铰接，另一端与所述搁脚件的中部铰接；所述搁脚件包括用于安装搁脚板的搁脚板安装面，当所述腿部组件收缩至极限位置时，所述搁脚板安装面收缩至所述座框安装架下方，且相对水平面倾斜；
所述座框安装架的内侧设置有安装平台，所述安装平台的高度低于所述座 框安装架的上边缘，所述安装平台所在的平面为座框安装面；当所述座椅支架收缩到极限位置时，所述座框安装架在所述座框安装面上的最高点与所述驱动连接件最低点在垂直方向的距离H1不大于270mm。
进一步地，当所述座椅支架收缩到极限位置时，所述座框安装架在所述座框安装面上的最高点与所述搁脚板安装面最高点在垂直方向的距离H2不大于50mm。
进一步地，所述座部联动组件包括连腿杆和座框联动组件，所述座部联动组件通过所述连腿杆与所述腿部组件连接，所述座框联动组件包括依次铰接的第一连框杆、中间联动杆和第二连框杆；
所述第一连框杆和第二连框杆分别与所述座框安装架铰接，所述第一连框杆、中间联动杆、第二连框杆和所述座框安装架形成四边形连杆机构，所述连腿杆与所述中间联动杆铰接。
进一步地，所述座部联动组件还包括侧板联动组件，所述侧板联动组件包括安装侧板和平移连杆组件，所述平移连杆组件铰接在所述座框联动组件和所述安装侧板之间。
进一步地，所述平移连杆组件包括第一连接杆、第二连接杆、第一摇杆、第一中间杆、第二中间杆和第二摇杆；
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杆铰接，所述第二连接杆一端与所述第二摇杆铰接，另一端与所述中间联动杆铰接；
所述第一摇杆和第二摇杆分别铰接在所述安装侧板的前端和中部，所述第一中间杆和第二中间杆铰接在所述第一摇杆与所述第二摇杆之间。
本申请还提供一种座椅单元，包括座框安装架、座部联动组件、驱动连接件、腿部斜收装置和靠背组件，所述腿部斜收装置包括铰接在座椅座框安装架前端的腿部组件，所述座部联动组件转动连接在所述座框安装架的下方，所述驱动连接件连接在所述座部联动组件远离所述腿部斜收装置的一端；所述靠背组件包括靠背安装件，所述靠背安装件用于连接和调整座椅靠背；
所述腿部组件包括搁脚驱动杆、搁脚连动杆、第一搁脚连杆、第二搁脚连杆和搁脚件，所述搁脚驱动杆和所述搁脚连动杆分别与所述座框安装架的前端铰接，所述第一搁脚连杆一端与所述搁脚驱动杆铰接，另一端与所述搁脚件的 端部铰接，所述第二搁脚连杆一端与所述搁脚连动杆铰接，另一端与所述搁脚件的中部铰接；所述搁脚件包括用于安装搁脚板的搁脚板安装面；
当所述座椅单元处于坐姿位置时，所述腿部组件收缩至极限位置，所述搁脚板安装面收缩至所述座框安装架下方，且相对水平面倾斜；当所述座椅单元处于躺姿位置时，所述座框安装架的最高点高于所述靠背安装件的最高点。
进一步地，所述靠背组件还包括座框连接部、靠背连接件和靠背限位件；
所述座框连接部的中部与所述座框安装架固定连接，所述座框连接部的两端分别与所述靠背安装件和所述靠背限位件铰接，所述靠背连接件一端与所述靠背安装件的中部铰接，另一端与所述靠背限位件铰接，所述靠背限位件通过连接杆与所述安装侧板的后端铰接；
当所述座框连接部和所述座框安装架倾斜向前和向上移动的过程中，所述靠背限位件和靠背连接件带动所述靠背安装件向后转动。
进一步地，当所述座椅单元处于躺姿位置时，所述脚板安装面与所述靠背安装件最高点的高度差H3不小于300mm。
进一步地，当所述座椅单元从伸展姿调节至躺姿位置时，所述靠背安装件的最大调节角度不小于45°。
进一步地，当所述座椅单元处于躺姿位置时，所述靠背安装件的中心线与水平面的夹角β不大于20°。
由于上述技术方案，本发明具有以下有益效果：
本申请腿部组件结构简单、紧凑，搁脚件可以完全斜收到座框底部，座框和下沉和搁脚件斜收结合，使得坐姿状态时座框和腿部组件在竖直方向尺寸更小，正面看上去座部的厚度更薄，且增加了座框底部空间，使便于清理。
本申请座框安装平台设置在座框安装架内壁的下边缘，使得座框可以下沉安装两侧座框安装架之间，座深增加。座椅支架收缩后座框安装架与腿部组件的垂直高度压缩，尽可能地减少了收缩后占用的空间，可以用于高支脚低座高的座椅款式。本申请通过腿部组件和靠背组件的结构改进，使得搁脚件的伸展高度、座框安装架倾斜角度和靠背安装件的调节角度都相应增加，使得座椅在躺姿位置时，使用者的脚部和头部能够保持大致水平或高于头部的零重力感，提高躺姿舒适性。
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伸展姿结构示意图；
图3是本发明实施例座椅支架的躺姿结构示意图；
图4是本发明实施例侧板联动组件的结构示意图；
图5是本发明实施例座椅支架伸展过程中结构示意图；
图6是本发明实施例1座椅单元的正视图；
图7是本发明实施例1座椅单元的侧视图；
图8是本发明实施例2座椅支架的躺姿位置示意图；
图9是图8的另一面视图；
图10是本发明实施例2座椅单元的侧视图。
其中，附图标记为：10-座椅支架，1-座框安装架，11-安装平台，111-座框安装面，2-腿部组件，21-搁脚驱动杆，22-搁脚连动杆，23-第一搁脚连杆，231-限位件，24-第二搁脚连杆，241-第一限位面，25-搁脚件，251-搁脚板安装面，252-第二限位面，3-座部联动组件，31-连腿杆，32-座框联动组件，321-第一连框杆，322-中间联动杆，323-第二连框杆，33-侧板联动组件，331-安装侧板，332-平移连杆组件，333-第一连接杆，334-第二连接杆，335-第一摇杆，336-第一中间杆，337-第二中间杆，338-第二摇杆，4-座框，5-扶手框架，6-搁脚板，7-座椅支脚，8-靠背组件，81-靠背安装件，82-座框连接部，83-靠背连接部，84-靠背限位件，85-连接杆，9-驱动连接件，100-座椅靠背，101-靠背尾缘。
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1
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。
如图1和2所示，本实施例1提供了一种座椅腿部斜收装置，包括铰接在座框安装架1前端的腿部组件2，腿部组件2包括搁脚驱动杆21、搁脚连动杆22、第一搁脚连杆23、第二搁脚连杆24和搁脚件25，搁脚驱动杆21和搁脚连动杆22分别与座框安装架1的前端铰接，第一搁脚连杆23一端与搁脚驱动杆21铰接，另一端与搁脚件25的端部铰接，第二搁脚连杆24一端与搁脚连动杆22铰接，另一端与搁脚件25的中部铰接；
搁脚件25包括用于安装搁脚板6的搁脚板安装面251，当腿部组件2收缩 至极限位置时，搁脚板安装面251收缩至座框安装架1下方，且相对水平面倾斜。具体地，当腿部组件2收缩至极限位置时，搁脚板安装面251与水平面的夹角为20°-26°。优选地，可以为20°、23°、25°或26°。第二搁脚连杆24与搁脚件25的连接点到搁脚板安装面251的距离小于第一搁脚连杆23与搁脚件25的连接点到搁脚板安装面251的距离，使得搁脚件22收缩后相对于水平面倾斜，腿部斜收装置在竖直方向上占用的空间减小。
具体地，第一搁脚连杆23靠近搁脚件25的一端设置有限位件231。第二搁脚连杆24上设置有与限位件231相配合的第一限位面241，当第一限位面241与限位件231抵触时，腿部组件2的当前位置为腿部组件2伸展的极限位置。搁脚件25的下边缘上设置有与限位件231相配合的第二限位面252，当第二限位面252与限位件231抵触时，腿部组件2的当前位置为腿部组件2收缩的极限位置。具体地，限位件231与第一限位面241或第二限位面252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。
本实施例搁脚件完全斜收到座框安装架下方，相比于常规的收回后搁脚件垂直的腿部结构，本申请成品座椅正面更加轻薄。收缩后座框安装架1与腿部组件2的垂直高度压缩，尽可能地减少了收缩后的支架厚度和占用的空间，提升空间利用率，从而使得座椅整装后座框下部空间增加，可以方便拖把、扫地机器人等清洁装置进行清洁，另一方面坐姿时还可以将腿部向内斜收放置，增加更多坐姿体验。
本实施例还提供一种座椅支架，包括座框安装架1、座部联动组件3、驱动连接件9和腿部斜收装置，座部联动组件3转动连接在座框安装架1的下方，驱动连接件9连接在座部联动组件3远离腿部斜收装置的一端；座框安装架1的内侧设置有安装平台11，安装平台11的高度低于座框安装架1的上边缘，安装平台11所在的平面为座框安装面111；如图1所示，当座椅支架收缩到极限位置时，座框安装架1在座框安装面111上的最高点与驱动连接件9最低点在垂直方向的距离H1不大于270mm，优选地，可以为270mm、260mm、250mm、230mm、220mm或200mm。
需要说明的是，安装平台11可以为多个，在本实施例中，安装平台11设 置在座框安装架1的下边缘，在沿座框安装架1的长度方向设置有四个安装平台11，座框可以通过螺栓螺母或铆钉等紧固件固定安装在安装平台11上。本申请安装平台11高度降低，使得座框可以下沉安装，增加座深，在座椅高度不变，座框安装面降低的情况下，还可以使座椅支脚高度增加，座框下部空间加大，另一方面也能够使座椅坐垫软包厚度增加、提高舒适度。
具体地，当座椅支架10收缩到极限位置时，座框安装架1在座框安装面111上的最高点与搁脚板安装面251最高点在垂直方向的距离H2不大于50mm。优选地，座框安装架1在座框安装面111上的最高点与搁脚板安装面251最高点在垂直方向的距离H2可以为50mm、45mm或40mm。距离H2越小，腿部组件收缩后从座椅正面看座部的厚度越小。
具体地，如图3所示，本实施例座部联动组件3包括连腿杆31和座框联动组件32，座部联动组件3通过连腿杆31与腿部组件2连接，座框联动组件32包括依次铰接的第一连框杆321、中间联动杆322和第二连框杆323；其中，第一连框杆321和第二连框杆323分别与座框安装架1铰接，第一连框杆321、中间联动杆322、第二连框杆323和座框安装架1形成四边形连杆机构，中间联动杆322与连腿杆31铰接。在本实施例中，在第一调节阶段，中间联动杆322保持不动，座框安装架1通过第一连框杆321和第二连框杆323的转动随腿部组件2的伸展向前平移至腿部组件2完全伸展。
具体地，如图4所示，座部联动组件3还包括侧板联动组件33，侧板联动组件33包括安装侧板331和平移连杆组件332，平移连杆组件332铰接在座框联动组件32和安装侧板331之间。在第二调节阶段，座框联动组件32通过平移连杆组件332的运动，倾斜向前和向上平移。平移连杆组件332包括第一连接杆333、第二连接杆334、第一摇杆335、第一中间杆336、第二中间杆337和第二摇杆338；其中，第一连接杆333一端与第一摇杆335铰接，另一端与中间联动杆322铰接，第二连接杆334一端与第二摇杆338铰接，另一端与中间联动杆322铰；第一摇杆335和第二摇杆338分别铰接在安装侧板331的前端和中部，第一中间杆336和第二中间杆337铰接在第一摇杆335与第二摇杆338之间。
具体地，还包括靠背组件8，靠背组件8转动连接在座框安装架1远离腿部组件2的一端，靠背组件8用于与座椅靠背连接，调节座椅的靠背角度。靠 背组件8包括靠背安装件81、座框连接部82、靠背连接件83和靠背限位件84；座框连接部82的中部与座框安装架1固定连接，座框连接部82的两端分别与靠背安装件81和靠背限位件84铰接，靠背连接件83一端与靠背安装件81的中部铰接，另一端与靠背限位件84铰接，靠背限位件84通过连接杆85与安装侧板331的后端铰接；当座框连接部82随座框安装架1倾斜向上移动的过程中，靠背限位件84和靠背连接件83带动靠背安装件81向后转动。
本实施例中，在第一调节阶段，腿部组件2向前伸展，带动座框安装架1向前移动，中间联动杆322不动、第一连框杆321和第二连框杆323向前转动，此时座框与靠背角度保持不变；在第二调节阶段，腿部组件2、座框安装架1和座框联动组件32整体倾斜向前和向上移动，此时座椅靠背向后转动调节，靠背与座框之间角度增加。
如图6和7所示，本实施例还提供一种座椅单元，包括两组且相对设置的座椅支架10，两组座椅支架10之间设置驱动组件，驱动组件包括驱动横杆和固定横杆，驱动横杆设置在相对的两个腿部组件之间，固定横杆通过驱动连接件9连接在相对的两个安装侧板331之间，驱动横杆用于与驱动源的推杆连接，驱动横杆驱动座椅支架10在坐姿位置和躺姿位置之间运动。具体地，驱动组件通过驱动横杆驱动腿部组件伸展，从而带动座框安装架、座部联动组件3和靠背组件8移动，在驱动组件的驱动下，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和靠背组件均收缩到极限位置；伸展姿位置时，腿部组件向前伸展到极限位置，靠背组件与座框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。
本座椅单元的两个座椅支架10分别与两个扶手框架5的内侧面固定连接，座框4通过安装平台11设置在两个座框安装架1之间。具体地，两个座椅支架镜像且相间隔设置，并通过安装侧板固定在扶手框架5上，座框4下沉式安装在安装平台上，安装平台的高度低于座框安装架的上边缘。
具体地，如图5所示，还包括搁脚板6，搁脚板6通过紧固件与搁脚板安装面251连接，搁脚板6的长度L不小于200mm。因本实施例搁脚件可以斜收到腿部组件2下方，所以可以安装一块较长的搁脚板6。优选地，在腿部组件伸缩过程中搁脚板不与地面产生干涉的基础上，搁脚板6的长度L可以为 200mm、250mm、260mm或280mm。
具体地，还包括座椅支脚7，座椅支脚7设置在扶手框架5下方，座椅支脚7的高度为120-150mm。优选地，座椅支脚的高度可以为120mm、130mm或150mm。相比使用传统的座椅支架的座椅单元，本实施例在保证坐高舒适的情况下，座椅支脚的高度更高，增加了座框底部空间。传统的座椅支架因结构复杂，占用空间较大，座椅支脚仅为5mm左右，座椅下方不易清洁。
实施例2
如图8-10所示，本实施例2的座椅支架包括座框安装架1、座部联动组件3、驱动连接件9、腿部斜收装置和靠背组件8，腿部斜收装置包括铰接在座椅座框安装架1前端的腿部组件2，座部联动组件3转动连接在座框安装架1的下方，驱动连接件9连接在座部联动组件3远离腿部斜收装置的一端；靠背组件8包括靠背安装件81，靠背安装件81用于连接和调整座椅靠背；
具体地，腿部组件2包括搁脚驱动杆21、搁脚连动杆22、第一搁脚连杆23、第二搁脚连杆24和搁脚件25，搁脚驱动杆21和搁脚连动杆22分别与座框安装架1的前端铰接，第一搁脚连杆23一端与搁脚驱动杆21铰接，另一端与搁脚件25的端部铰接，第二搁脚连杆24一端与搁脚连动杆22铰接，另一端与搁脚件25的中部铰接；搁脚件25包括用于安装搁脚板6的搁脚板安装面251；
当座椅支架处于坐姿位置时，腿部组件2收缩至极限位置，搁脚板安装面251收缩至座框安装架1下方，且相对水平面倾斜；当座椅支架处于躺姿位置时，座框安装架1的最高点高于靠背安装件81的最高点。
具体地，靠背组件8还包括座框连接部82、靠背连接件83和靠背限位件84；座框连接部82的中部与座框安装架1固定连接，座框连接部82的两端分别与靠背安装件81和靠背限位件84铰接，靠背连接件83一端与靠背安装件81的中部铰接，另一端与靠背限位件84铰接，靠背限位件84通过连接杆85与安装侧板331的后端铰接；当座框连接部82和座框安装架1倾斜向前和向上移动的过程中，靠背限位件84和靠背连接件83带动靠背安装件81向后转动。
本实施例，在第二调节阶段，座框安装架1倾斜向上移动，靠背安装件81向后转动降低，当靠背组件8和腿部组件2都调节到极限位置时，座椅处于躺姿位置，此时脚板安装面251与靠背安装件81最高点的高度差H3不小于 300mm。优选地，脚板安装面251与靠背安装件81最高点的高度差H3可以为300mm、310mm、320mm或350mm。本实施例中脚板安装面与靠背安装件之间的高度差增加，即躺姿位置时座椅搁脚部的高度增加，使得平躺时脚部和头部基本可以处于水平位置，达到类似太空零重力的舒适感，达到改善血液循环、缓解腰背疼痛、放松身心的目的。
需要说明的是，在第二调节阶段，腿部组件2和座部联动组件3倾斜向上平移，座框安装架1相对水平面的倾斜角度增加，靠背安装件81在靠背限位件84和靠背连接件83带动下相对座框安装架1向后转动，靠背安装件与座框安装架之间的角度增加。具体地，靠背安装件81在第二调节阶段的最大调节角度不小于45°。优选地，靠背安装件81在第二调节阶段的角度变化范围可以为45°、48°、50°、52°、55°或60°。在本实施例中，靠背安装件81在第二调节阶段的角度变化为50°，靠背安装件81与座框安装架1之间的角度由117°调节到166°。座框安装架1在第二调节阶段的最大调节角度不小于8°，优选地可以为8°、10°、12°或15°。在本实施例中，座框安装架1的角度变化为10°，座框安装架1与水平面的夹角由13°调节到23°。在本实施例中，当座椅调节至躺姿位置时，靠背安装件81的中心线与水平面的夹角β不大于20°，即躺姿位置时，座椅靠背与水平面的夹角不大于20°。优选地，夹角β可以为20°、18°、16°。座框安装架和靠背组件的角度调整最终使得座椅的靠背和搁脚部接近水平或搁脚部略高于头部，使得使用者在的姿位置时可以得到类似太空零重力的体验，舒适性提高。
本实施例2座椅单元的座椅靠背100包括靠背尾缘101，坐姿位置时，靠背尾缘101所处的与水平面垂直的平面为初始平面，在第一调节阶段和第二调节阶段，靠背尾缘101的移动不超过初始平面。具体地，本实施例调节装置在调节过程中座部联动组件带动靠背组件倾斜向前移动的距离大于等于座椅靠背向后转动产生的距离，使得座椅靠背可以零间隙靠墙放置，更加节省空间。
具体地，采用以上实施例座椅单元的优点：本申请腿部组件结构简单、紧凑，搁脚件可以完全斜收到座框底部，座框和下沉和搁脚件斜收结合，使得坐姿状态时座框和腿部组件在竖直方向尺寸更小，正面看上去座部的厚度更薄，且增加了座框底部空间，使便于清理。
本申请座框安装平台设置在座框安装架内壁的下边缘，使得座框可以下沉 安装两侧座框安装架之间，座深增加。座椅支架收缩后座框安装架与腿部组件的垂直高度压缩，尽可能地减少了收缩后占用的空间，可以用于高支脚，低座高的座椅款式。
本申请通过腿部组件和靠背组件的结构改进，使得搁脚件的伸展高度、座框安装架倾斜角度和靠背安装件的调节角度都相应增加，使得座椅在躺姿位置时，使用者的脚部和头部能够保持大致水平或高于头部的零重力感，提高躺姿舒适性。
在本申请中，相对的两座椅支架之间，即两座框安装架的相对侧为“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”。
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 (15)

  1. 一种座椅腿部斜收装置，其特征在于，包括铰接在座椅的座框安装架(1)前端的腿部组件(2)；
    所述腿部组件(2)包括搁脚驱动杆(21)、搁脚连动杆(22)、第一搁脚连杆(23)、第二搁脚连杆(24)和搁脚件(25)，所述搁脚驱动杆(21)和所述搁脚连动杆(22)分别与所述座框安装架(1)的前端铰接，所述第一搁脚连杆(23)一端与所述搁脚驱动杆(21)铰接，另一端与所述搁脚件(25)的端部铰接，所述第二搁脚连杆(24)一端与所述搁脚连动杆(22)铰接，另一端与所述搁脚件(25)的中部铰接；
    所述搁脚件(25)包括用于安装搁脚板(6)的搁脚板安装面(251)，当所述腿部组件(2)收缩至极限位置时，所述搁脚板安装面(251)收缩至所述座框安装架(1)下方，且相对水平面倾斜。
  2. 根据权利要求1所述的一种座椅腿部斜收装置，其特征在于，当所述腿部组件(2)收缩至极限位置时，所述搁脚板安装面(251)与水平面的夹角为20°-26°。
  3. 根据权利要求2所述的一种座椅腿部斜收装置，其特征在于，所述第二搁脚连杆(24)与所述搁脚件(25)的连接点到所述搁脚板安装面(251)的距离小于所述第一搁脚连杆(23)与所述搁脚件(25)的连接点到所述搁脚板安装面(251)的距离。
  4. 根据权利要求3所述的一种座椅腿部斜收装置，其特征在于，所述第一搁脚连杆(23)靠近所述搁脚件(25)的一端设置有限位件(231)，所述第二搁脚连杆(24)上设置有与所述限位件(231)相配合的第一限位面(241)，当所述第一限位面(241)与所述限位件(231)抵触时，所述腿部组件(2)的当前位置为所述腿部组件(2)伸展的极限位置。
  5. 根据权利要求4所述的一种座椅腿部斜收装置，其特征在于，所述搁脚件(25)的下边缘上设置有与所述限位件(231)相配合的第二限位面 (252)，当所述第二限位面(252)与所述限位件(231)抵触时，所述腿部组件(2)的当前位置为所述腿部组件(2)收缩的极限位置。
  6. 一种座椅支架，其特征在于，包括座框安装架(1)、座部联动组件(3)、驱动连接件(9)和腿部斜收装置，所述腿部斜收装置包括铰接在座椅座框安装架(1)前端的腿部组件(2)，所述座部联动组件(3)转动连接在所述座框安装架(1)的下方，所述驱动连接件(9)连接在所述座部联动组件(3)远离所述腿部斜收装置的一端；
    所述腿部组件(2)包括搁脚驱动杆(21)、搁脚连动杆(22)、第一搁脚连杆(23)、第二搁脚连杆(24)和搁脚件(25)，所述搁脚驱动杆(21)和所述搁脚连动杆(22)分别与所述座框安装架(1)的前端铰接，所述第一搁脚连杆(23)一端与所述搁脚驱动杆(21)铰接，另一端与所述搁脚件(25)的端部铰接，所述第二搁脚连杆(24)一端与所述搁脚连动杆(22)铰接，另一端与所述搁脚件(25)的中部铰接；所述搁脚件(25)包括用于安装搁脚板(6)的搁脚板安装面(251)，当所述腿部组件(2)收缩至极限位置时，所述搁脚板安装面(251)收缩至所述座框安装架(1)下方，且相对水平面倾斜；
    所述座框安装架(1)的内侧设置有安装平台(11)，所述安装平台(11)的高度低于所述座框安装架(1)的上边缘，所述安装平台(11)所在的平面为座框安装面(111)；当所述座椅支架收缩到极限位置时，所述座框安装架(1)在所述座框安装面(111)上的最高点与所述驱动连接件(9)最低点在垂直方向的距离H1不大于270mm。
  7. 根据权利要求6所述的一种座椅支架，其特征在于，当所述座椅支架收缩到极限位置时，所述座框安装架(1)在所述座框安装面(111)上的最高点与所述搁脚板安装面(251)最高点在垂直方向的距离H2不大于50mm。
  8. 根据权利要求6所述的一种座椅支架，其特征在于，所述座部联动组件(3)包括连腿杆(31)和座框联动组件(32)，所述座部联动组件(3)通过所述连腿杆(31)与所述腿部组件(2)连接，所述座框联动组件(32)包括依次铰接的第一连框杆(321)、中间联动杆(322)和第二连框杆(323)；
    所述第一连框杆(321)和第二连框杆(323)分别与所述座框安装架(1)铰接，所述第一连框杆(321)、中间联动杆(322)、第二连框杆(323)和所述座框安装架(1)形成四边形连杆机构，所述连腿杆(31)与所述中间联动杆(322)铰接。
  9. 根据权利要求8所述的一种座椅支架，其特征在于，所述座部联动组件(3)还包括侧板联动组件(33)，所述侧板联动组件(33)包括安装侧板(331)和平移连杆组件(332)，所述平移连杆组件(332)铰接在所述座框联动组件(32)和所述安装侧板(331)之间。
  10. 根据权利要求9所述的一种座椅支架，其特征在于，所述平移连杆组件(332)包括第一连接杆(333)、第二连接杆(334)、第一摇杆(335)、第一中间杆(336)、第二中间杆(337)和第二摇杆(338)；
    所述第一连接杆(333)一端与所述第一摇杆(335)铰接，另一端与所述中间联动杆(322)铰接，所述第二连接杆(334)一端与所述第二摇杆(338)铰接，另一端与所述中间联动杆(322)铰接；
    所述第一摇杆(335)和第二摇杆(338)分别铰接在所述安装侧板(331)的前端和中部，所述第一中间杆(336)和第二中间杆(337)铰接在所述第一摇杆(335)与所述第二摇杆(338)之间。
  11. 一种座椅单元，其特征在于，包括座框安装架(1)、座部联动组件(3)、驱动连接件(9)、腿部斜收装置和靠背组件(8)，所述腿部斜收装置包括铰接在座椅座框安装架(1)前端的腿部组件(2)，所述座部联动组件(3)转动连接在所述座框安装架(1)的下方，所述驱动连接件(9)连接在所述座部联动组件(3)远离所述腿部斜收装置的一端；所述靠背组件(8)包括靠背安装件(81)，所述靠背安装件(81)用于连接和调整座椅靠背；
    所述腿部组件(2)包括搁脚驱动杆(21)、搁脚连动杆(22)、第一搁脚连杆(23)、第二搁脚连杆(24)和搁脚件(25)，所述搁脚驱动杆(21)和所述搁脚连动杆(22)分别与所述座框安装架(1)的前端铰接，所述第一搁脚连杆(23)一端与所述搁脚驱动杆(21)铰接，另一端与所述搁脚件(25)的 端部铰接，所述第二搁脚连杆(24)一端与所述搁脚连动杆(22)铰接，另一端与所述搁脚件(25)的中部铰接；所述搁脚件(25)包括用于安装搁脚板(6)的搁脚板安装面(251)；
    当所述座椅单元处于坐姿位置时，所述腿部组件(2)收缩至极限位置，所述搁脚板安装面(251)收缩至所述座框安装架(1)下方，且相对水平面倾斜；当所述座椅单元处于躺姿位置时，所述座框安装架(1)的最高点高于所述靠背安装件(81)的最高点。
  12. 根据权利要求11所述的一种座椅单元，其特征在于，所述靠背组件(8)还包括座框连接部(82)、靠背连接件(83)和靠背限位件(84)；
    所述座框连接部(82)的中部与所述座框安装架(1)固定连接，所述座框连接部(82)的两端分别与所述靠背安装件(81)和所述靠背限位件(84)铰接，所述靠背连接件(83)一端与所述靠背安装件(81)的中部铰接，另一端与所述靠背限位件(84)铰接，所述靠背限位件(84)通过连接杆(85)与所述安装侧板(331)的后端铰接；
    当所述座框连接部(82)和所述座框安装架(1)倾斜向前和向上移动的过程中，所述靠背限位件(84)和靠背连接件(83)带动所述靠背安装件(81)向后转动。
  13. 根据权利要求12所述的一种座椅单元，其特征在于，当所述座椅单元处于躺姿位置时，所述脚板安装面(221)与所述靠背安装件(81)最高点的高度差H3不小于300mm。
  14. 根据权利要求13所述的一种座椅单元，其特征在于，当所述座椅单元从伸展姿调节至躺姿位置时，所述靠背安装件(81)的最大调节角度不小于45°。
  15. 根据权利要求13所述的一种座椅单元，其特征在于，当所述座椅单元处于躺姿位置时，所述靠背安装件(81)的中心线与水平面的夹角β不大于20°。
PCT/CN2022/080372 2021-08-18 2022-03-11 一种座椅腿部斜收装置、座椅支架及座椅单元 WO2023019925A1 (zh)

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