WO2023011469A1 - 一种搁脚延伸机构及座椅伸缩装置 - Google Patents

一种搁脚延伸机构及座椅伸缩装置 Download PDF

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Publication number
WO2023011469A1
WO2023011469A1 PCT/CN2022/109700 CN2022109700W WO2023011469A1 WO 2023011469 A1 WO2023011469 A1 WO 2023011469A1 CN 2022109700 W CN2022109700 W CN 2022109700W WO 2023011469 A1 WO2023011469 A1 WO 2023011469A1
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WO
WIPO (PCT)
Prior art keywords
footrest
connecting rod
linkage
hinged
extension mechanism
Prior art date
Application number
PCT/CN2022/109700
Other languages
English (en)
French (fr)
Inventor
李晓鸿
李元坤
吕战征
陈晨
Original Assignee
锐迈科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110887471.9A external-priority patent/CN113662382A/zh
Priority claimed from CN202121793688.5U external-priority patent/CN216797072U/zh
Application filed by 锐迈科技股份有限公司 filed Critical 锐迈科技股份有限公司
Publication of WO2023011469A1 publication Critical patent/WO2023011469A1/zh
Priority to US18/423,351 priority Critical patent/US20240156262A1/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • 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
    • 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
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03211—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by electric motors
    • 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
    • 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

Definitions

  • the invention relates to the technical field of sofa supports, in particular to a footrest extension mechanism and a seat telescopic device.
  • Functional sofas and seats are becoming more and more common in daily life. With the wide application of functional sofas, the requirements for the comfort of sofa seats are getting higher and higher. Functional seats are generally equipped with mechanical stretching devices, so that the seat can be adjusted between sitting, leisure and lying positions.
  • the existing seat device has the following defects: when the seat is stretched, the footrest mechanism is easy to rub against the ground, which affects the user's use; the seat footrest mechanism can only be rotated simply, and the overall extension length is relatively short. When lying down, the legs and feet cannot be fully supported, which affects the comfort of the seat;
  • the traditional chute structure is used in the existing mechanical stretching device with extended footrest.
  • the chute structure is prone to noise during use, and the chute is easy to wear after repeated use, resulting in the inability to open or close the leg structure smoothly. , poor structural stability.
  • the object of the present invention is to provide a footrest extension mechanism and a seat telescopic device, which can increase the extension length of the seat footrest by adjusting the structure of the seat footrest extension mechanism, and increase the The support of the user's legs and feet improves the comfort of the seat.
  • the present invention provides a footrest extension mechanism, including: a first link, a second link, a third link, a fourth link, a first footrest, a linkage rod, a second link Foot pieces and footrest connectors;
  • the first connecting rod is used for hinged connection with the linkage bracket of the seat.
  • the fourth connecting rod One end is hinged to the second footrest, the other end is hinged to the third connecting rod, the first footrest is hinged to one end of the linkage rod, the other end of the linkage rod is hinged to the The middle part of the fourth link is hinged;
  • the footrest connector includes a first connector and a second connector, one end of the first connector is hinged to the middle of the second footrest, and the other end is hinged to one end of the second connector.
  • the other end of the second connecting piece is hinged with the middle part of the second connecting rod, and the middle part of the second connecting part is hinged with the middle part of the fourth connecting rod.
  • the middle part of the second footrest is provided with a first limiting member, and when the first limiting member is fitted against the second connecting member, the second footrest shrinks to the limit position to prevent loosening of the footrest.
  • one end of the second connecting rod close to the first connecting rod is provided with a first connection point, and the second connecting rod is hinged to the middle of the third connecting rod at the first connection point,
  • the third connecting rod is used for connecting with the linkage bracket.
  • a second connecting point is provided at an end of the second connecting rod close to the first footrest, and the second connecting rod is connected to the second connecting member at the second connecting point.
  • the end of the fourth connecting rod close to the second footrest is sequentially provided with a footrest connection point, a linkage rod connection point and a connector connection point;
  • the fourth connecting rod is connected to the second footrest at the connecting point of the footrest, the fourth connecting rod is connected to the connecting rod at the connecting point of the connecting rod, and the first The four connecting rods are connected to the second connecting piece at the connecting point of the connecting piece, and the connecting point of the linkage rod is arranged between the connecting point of the foot rest and the connecting point of the connecting piece.
  • first footrest is provided with a connection point of a second link and a linkage point, and the distance between the linkage point and the connection point of the linkage rod is greater than that between the linkage point and the second link. point distance.
  • the first footrest is located above the second footrest, and the footrest surface of the first footrest is in contact with the second footrest.
  • the footrest surfaces of the foot parts are in the same vertical plane.
  • the footrest extension mechanism when extended from the retracted position to the limit position, the footrest surfaces of the first footrest member and the second footrest member turn upward, and the first footrest member and the second footrest member rotate upward.
  • the second footrests are spaced apart from each other.
  • a footrest assembly is also included, the footrest assembly includes a first footrest and a second footrest, the first footrest is connected to the first footrest, the second footrest is connected to the The second footrest is connected.
  • the present invention also provides a seat telescopic device, comprising: the footrest extension mechanism, a linkage bracket and a back mechanism;
  • One end of the linkage bracket is connected to the back mechanism, the other end of the linkage bracket is connected to the footrest extension mechanism, and the footrest extension mechanism is connected to the footrest assembly.
  • the present invention has the following beneficial effects:
  • the first footrest of the footrest extension mechanism of the present invention is hinged with the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are retracted and close together, taking up little space; when stretched, the extension length of the footrest extension mechanism increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • Fig. 1 is a schematic structural view of a footrest extension mechanism according to an embodiment of the present invention
  • Fig. 2 is a schematic structural view of a sitting posture state of a seat telescopic device according to an embodiment of the present invention
  • Fig. 3 is a schematic diagram of the structure of a stretched seat stretching device in a lying position according to an embodiment of the present invention
  • Figure 4 is a schematic view of the structure of the other side of Figure 2;
  • FIG. 5 is a structural schematic diagram of the other side of FIG. 3 .
  • reference numerals are: 1-first connecting rod, 2-second connecting rod, 21-first connecting point, 22-second connecting point, 3-third connecting rod, 4-fourth connecting rod, 41 -footrest connection point, 42-linkage link connection point, 43-connector connection point, 5-first footrest, 51-second link connection point, 52-linkage point, 6-linkage rod, 7 - the second footrest, 71 - the first limiter, 8 - the footrest connecting piece, 81 - the first connecting piece, 82 - the second connecting piece, 9 - the footrest assembly, 91 - the first footrest, 92 -second footrest, 10-linkage bracket, 11-back mechanism, 12-support structure, 121-base, 122-first support, 123-second support, 124-base linkage assembly, 125-seat connection Moving parts, 126-back linkage, 13-linkage structure, 131-side plate, 132-first linkage, 133-second linkage, 134-third linkage, 14-transmission structure, 141-first
  • references herein to "one embodiment” or “an embodiment” refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention.
  • orientation or positional relationship indicated by the terms “upper”, “lower”, “left”, “right”, “top”, “bottom” etc. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of these features. Also, the terms “first”, “second”, etc. are used to distinguish similar items and not necessarily to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.
  • This embodiment provides a footrest extension mechanism, as shown in Figure 1, including: a first link 1, a second link 2, a third link 3, a fourth link 4, and a first footrest 5 , linkage rod 6, second footrest 7 and footrest connector 8;
  • One end of the second connecting rod 2 is hinged with the first footrest 5, and the other end of the second connecting rod 2 is hinged with the first connecting rod 1.
  • the first connecting rod 1 is used to be hinged with the linkage bracket 10 of the seat.
  • One end of the rod 4 is hinged to the second footrest 7, the other end of the fourth connecting rod 4 is hinged to the third connecting rod 3, the first footrest 5 is hinged to one end of the connecting rod 6, and the other end of the connecting rod 6 Hinged with the middle of the fourth connecting rod 4;
  • the footrest connector 8 includes a first connector 81 and a second connector 82, one end of the first connector 81 is hinged with the middle part of the second footrest 7, and the other end of the first connector 81 is connected with the second connector 82. One end is hinged, the other end of the second connecting member 82 is hinged to the middle of the second connecting rod 2 , and the middle of the second connecting member 82 is hinged to the middle of the fourth connecting rod 4 .
  • the first footrest 5 is hinged to the fourth link 4 through the linkage rod 6, the fourth link is connected to the second footrest, and the first footrest 5 is not connected to the fourth link
  • the relationship increases the flexibility of movement of the first footrest and the second footrest during contraction or extension.
  • the first footrest 5, the connecting rod 6, the fourth connecting rod 4, the second connecting member 82 and the second connecting rod 2 constitute a five-bar linkage mechanism, and the first footrest can be more flexibly connected with the second footrest. Close together or separate, increase the distance between the first footrest and the second footrest after separation, and increase the extension length of the second footrest.
  • a first limiting member 71 is provided in the middle of the second footrest 7 , and when the first limiting member 71 and the second connecting member 82 abut against each other, the second footrest 7 shrinks to a limit position.
  • the first limiting member 71 is used to limit the maximum retracted position of the second footrest, so as to prevent the second footrest from failing to reach a predetermined position and causing looseness.
  • both the footrest surface of the second footrest and the footrest surface of the first footrest are kept in the vertical plane, so as to improve the aesthetics of the seat when it is retracted.
  • one end of the second connecting rod 2 close to the first connecting rod 1 is provided with a first connecting point 21, the second connecting rod 2 is hinged with the middle part of the third connecting rod 3 at the first connecting point 21, and the third connecting rod 3 is used for connecting with the linkage bracket 10.
  • the second connecting rod 2 is cross-connected with the third connecting rod 3 .
  • one end of the second connecting rod 2 close to the first footrest 5 is provided with a second connection point 22 , and the second connecting rod 2 is connected to the second connecting member 82 at the second connection point 22 .
  • the first connecting piece 81 and the second connecting piece 82 are used to connect and support the second footrest 7, the second footrest 7, the first connecting piece 81, the second connecting piece 82 and the fourth
  • the connecting rod 4 constitutes a foldable and extendable four-bar linkage mechanism for supporting and driving the second footrest 7 to extend.
  • one end of the fourth connecting rod 4 close to the second footrest 7 is sequentially provided with a footrest connection point 41, a linkage rod connection point 42 and a connecting piece connection point 43; is connected with the second footrest 7, the fourth connecting rod 4 is connected with the connecting rod 6 at the connecting point 42 of the connecting rod, and the fourth connecting rod 4 is connected with the second connecting member 82 at the connecting point 43 of the connecting member.
  • the connecting rod connecting point 42 is arranged between the footrest connecting point 41 and the connecting member connecting point 43 .
  • the first footrest 5 is provided with a second link connection point 51 and a linkage point 52, the distance from the linkage point 52 to the linkage link connection point 42 is greater than the distance from the linkage point 52 to the second link connection point 51 .
  • the distance from the linkage point 52 to the second link connection point 51 is smaller than the distance from the linkage point 52 to the linkage link connection point 42, so that when the first footrest 5 is extended, the second link 2 drives the second link.
  • the connection point 51 moves downward relative to the linkage point 52, so that the footrest surface of the first footrest 5 can smoothly rotate to the horizontal position where the footrest faces upward, so that the first footrest can be deployed more flexibly and quickly.
  • the first connecting rod 1, the second connecting rod 2, the third connecting rod 3, the fourth connecting rod 4, the first footrest 5, the linkage rod 6, the second footrest 7 and the connection between the footrest connecting member 8 are all pivotable connections or hinged joints, and the combinations of rotating shafts, pivot pins, rivets, bolts and nuts, or other fastening mechanisms that can realize pivotable connections can be used between the various parts.
  • Firmware connection
  • the first footrest 5 when the footrest extension mechanism shrinks to the limit position, the first footrest 5 is located above the second footrest 7, and the footrest surface of the first footrest 5 can be aligned with the second footrest.
  • the footrest surfaces of the foot parts 7 are in the same vertical plane.
  • the footrest extension mechanism extends from the retracted position to the limit position, the footrest surfaces of the first footrest 5 and the second footrest 7 turn upward, and the first footrest 5 and the second footrest 7 are spaced apart from each other open.
  • a footrest assembly 9 is also included.
  • the footrest assembly 9 includes a first footrest 91 and a second footrest 92.
  • the first footrest 91 is connected with the first footrest 5, and the second footrest
  • the foot plate 92 is connected with the second footrest 7 .
  • the first footrest and the second footrest are respectively provided with inwardly bent footrest surfaces, and the footrest surfaces are used for fixed connection with the footrest, that is, the first footrest and the second footrest are respectively fixed on them. corresponding to the footrest.
  • the seat linkage bracket 10 drives the first link 1 and the third link 3 to rotate, so that the footrest extension mechanism moves from the retracted position shown in Figure 2 to the position shown in Figure 3 In the extended position shown, in the extended position, the footrest surfaces of the first footrest member 5 and the second footrest member 7 are in a horizontal position.
  • the second connecting rod 2 drives the first footrest 5 to rotate upwards, and the linkage rod 6 rotates with the first footrest 5, so that the first footrest 5 rotate more flexibly while supporting the first footrest 5, the fourth connecting rod 4 drives the second footrest 7 and the footrest connection 8 to extend forward and rotate upward until the second footrest 7 stretches to the limit position .
  • the movement direction of each component in the footrest extension mechanism is opposite to that during the extension process.
  • the distance between the first footrest and the second footrest is greater than 140mm, preferably, it can be 145mm, 147mm, 150mm or 155mm. The distance between the stretched first footrest and the second footrest.
  • the first footrest of the footrest extension mechanism of the present invention is hinged with the fourth connecting rod through the linkage rod, so that the first footrest and the second footrest can be moved closer and separated more flexibly.
  • the foot parts are retracted and close together, taking up little space; when stretched, the extension length of the footrest extension mechanism increases, which can better support the legs and feet, improve seat comfort and meet the needs of users of different heights.
  • This embodiment also provides a seat retractable device, as shown in Figure 2-5, comprising: a footrest extension mechanism, a linkage bracket 10 and a back mechanism 11; one end of the linkage bracket 10 is connected to the back mechanism 11, and the other end of the linkage bracket 10 One end is connected with the footrest extension mechanism, and the footrest extension mechanism is connected with the footrest assembly 9 .
  • the linkage bracket 10 includes a support structure 12 and a linkage structure 13.
  • the support structure 12 includes a base 121, a first support 122, a second support 123 and a base linkage assembly 124, wherein one end of the base 121 is connected to the first support 122 , the other end of the base 121 is connected to the second support 123 , and the base linkage assembly 124 is disposed between the first support 122 and the second support 123 .
  • the base linkage assembly 124 includes: a seat linkage 125 and a back linkage 126, one end of the seat linkage 125 is connected to the first support 122, and the other end of the seat linkage 125 is connected to the back.
  • the movable member 126 is connected.
  • the linkage structure 13 includes: a side plate 131, a first linkage piece 132, a second linkage piece 133 and a third linkage piece 134, the middle part of the second linkage piece 133 is rotationally connected with the side plate 131, and one end of the second linkage piece 133 It is connected with one end of the first linkage 132, the other end of the first linkage 132 is connected with the first support 122, the other end of the second linkage 133 is connected with one end of the third linkage 134, and the third linkage 134 is another One end is connected with the footrest extension mechanism;
  • the linkage bracket 10 also includes a transmission structure 14.
  • the transmission structure 14 includes a connected first transmission member 141 and a second transmission member 142.
  • the first transmission member is used to connect with the driving device, and the second transmission member is extended with the footrest.
  • the mechanism is connected, and the driving device is used to drive the linkage bracket to move through the transmission structure.
  • the driving device may be a manual driving device; in other embodiments, the driving device may be an electric driving device, and the electric driving device may be a push rod motor or a slider motor driving device.
  • the back mechanism 11 is connected to the side plate 131 of the linkage structure 13, and the movement of the linkage bracket 10 drives the back mechanism 11 and the footrest extension mechanism to expand or contract.
  • the footrest extension mechanism and the back mechanism can be continuously adjusted.
  • the corresponding seat is in a casual position.
  • both the footrest extension mechanism and the back mechanism are extended to the limit position , the corresponding seat is in the lying position, and when the footrest extension mechanism and the back mechanism shrink to the limit position, the corresponding seat is in the sitting position.
  • This embodiment is a footrest extension mechanism and a seat telescopic device.
  • the expansion and contraction of the footrest extension mechanism is more flexible and the extension length is increased, which can better support the legs and feet and improve the seat.
  • the chair is comfortable and meets the needs of users of different heights.
  • the two groups of telescopic devices are spaced apart and arranged symmetrically based on the central plane of the base.
  • the seat telescopic device is provided with a seat frame, and the seat telescopic device is soft-packed into a finished sofa.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Passenger Equipment (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

一种搁脚延伸机构及座椅伸缩装置，包括：第一连杆（1）、第二连杆（2）、第三连杆（3）、第四连杆（4）、第一搁脚件（5）、连动杆（6）、第二搁脚件（7）和搁脚连接件（8）；第二连杆（2）一端与第一搁脚件（5）铰接，另一端与第一连杆（1）铰接，第一连杆（1）用于与座椅的联动支架（10）铰接，第四连杆（4）一端与第二搁脚件（7）铰接，另一端与第三连杆（3）铰接，第一搁脚件（5）与连动杆（6）的一端铰接，连动杆（6）的另一端与第四连杆（4）的中部铰接；搁脚连接件（8）的第一连接件（81）一端与第二搁脚件（7）的中部铰接，另一端与第二连接件（82）的一端铰接，第二连接件（82）的另一端与第二连杆（2）的中部铰接，第二连接件（82）的中部与第四连杆（4）的中部铰接。能够提高搁脚延伸机构的调节灵活度和增加搁脚延伸机构伸展长度。

Description

一种搁脚延伸机构及座椅伸缩装置
本申请要求于2021年8月3日递交的中国专利申请第202110887471.9号以及于2021年8月3日递交的中国专利申请第202121793688.5的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本发明涉及沙发支架技术领域，特别涉及一种搁脚延伸机构及座椅伸缩装置。
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。随着功能性沙发的广泛应用，对于沙发座椅的舒适性要求也越来越高。功能性座椅一般都安装有机械伸展装置，使座椅可以在坐姿、休闲姿和躺姿的位置间调节。
现有的座椅装置存在以下缺陷：在座椅伸展时，搁脚机构容易与地面擦碰，影响用户的使用；座椅搁脚机构只能简单转动，整体伸展长度较短，在休闲姿和躺姿时不能将腿部和脚部全部支撑，影响座椅的舒适性；
现有的具有延长搁脚板的机械伸展装置中采用传统的滑槽结构，滑槽结构在使用的过程中容易产生噪音，多次使用后滑槽容易磨损，导致腿部结构无法顺利打开或收起，结构稳定性差。
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搁脚延伸机构及座椅伸缩装置，能够通过调整座椅搁脚延伸机构的结构，使得座椅搁脚板的伸展长度增加，增加对使用者腿部和脚部的支撑，提高座椅舒适性。
为了解决上述问题，本发明提供一种搁脚延伸机构，包括：第一连杆、第二连杆、第三连杆、第四连杆、第一搁脚件、连动杆、第二搁脚件和搁脚连接件；
所述第二连杆一端与所述第一搁脚件铰接，另一端与所述第一连杆铰接，所述第一连杆用于与座椅的联动支架铰接，所述第四连杆一端与所述第二搁脚件铰接，另一端与所述第三连杆铰接，所述第一搁脚件与所述连动杆的一端铰接，所述连动杆的另一端与所述第四连杆的中部铰接；
所述搁脚连接件包括第一连接件和第二连接件，所述第一连接件一端与所述第二搁脚件的中部铰接，另一端与所述第二连接件的一端铰接，所述第二连接件的另一端与第二连杆的中部铰接，所述第二连接件的中部与所述第四连杆的中部铰接。
进一步地，所述第二搁脚件的中部设置有第一限位件，当所述第一限位件与所述第二连接件配合抵靠时，所述第二搁脚件收缩到极限位置，用于防止搁脚件出现松动现象。
进一步地，所述第二连杆靠近所述第一连杆的一端设置有第一连接点，所述第二连杆在所述第一连接点处与所述第三连杆的中部铰接，所述第三连杆用于与所述联动支架连接。
进一步地，所述第二连杆靠近所述第一搁脚件的一端设有第二连接点，所述第二连杆在所述第二连接点处与所述第二连接件连接。
进一步地，所述第四连杆靠近所述第二搁脚件的一端依次设置有搁脚连接点、连动杆连接点和连接件连接点；
所述第四连杆在所述搁脚连接点处与所述第二搁脚件连接，所述第四连杆在所述连动杆连接点处与所述连动杆连接，所述第四连杆在所述连接件连接点处与所述第二连接件连接，所述连动杆连接点设置在所述搁脚连接点与所述连接件连接点之间。
进一步地，所述第一搁脚件上设置有第二连杆连接点和联动点，所述联动点到所述连动杆连接点的距离大于所述联动点到所述第二连杆连接点的距离。
进一步地，当所述搁脚延伸机构收缩到极限位置时，所述第一搁脚件位于所述第二搁脚件的上方，所述第一搁脚件的搁脚面与所述第二搁脚件的搁脚面处于同一竖直平面内。
进一步地，当所述搁脚延伸机构从收缩位置伸展到极限位置时，所述第一搁脚件与所述第二搁脚件的搁脚面转动朝上，且所述第一搁脚件与所述第 二搁脚件彼此间隔开。
进一步地，还包括搁脚板组件，所述搁脚板组件包括第一搁脚板和第二搁脚板，所述第一搁脚板与所述第一搁脚件连接，所述第二搁脚板与所述第二搁脚件连接。
本发明还提供一种座椅伸缩装置，包括：所述的搁脚延伸机构，联动支架和背部机构；
所述联动支架一端与所述背部机构连接，所述联动支架的另一端与所述搁脚延伸机构连接，所述搁脚延伸机构与所述搁脚板组件连接。
由于上述技术方案，本发明具有以下有益效果：
本发明搁脚延伸机构的第一搁脚件通过连动杆与第四连杆铰接，使得第一搁脚件和第二搁脚件可以更加灵活的靠拢和分隔开，收缩时，两搁脚件收回靠拢，占用空间小；伸展时，搁脚延伸机构的伸展长度增加，能够更好的支撑腿部和脚部，提高座椅舒适性和满足不同身高用户的使用需求。
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是本发明实施例一种搁脚延伸机构的结构示意图；
图2是本发明实施例一种座椅伸缩装置坐姿状态的结构示意图；
图3是本发明实施例一种座椅伸缩装置伸展后的躺姿状态结构示意图；
图4是图2的另一面结构示意图；
图5是图3的另一面结构示意图。
其中，附图标记为：1-第一连杆，2-第二连杆，21-第一连接点，22-第二连接点，3-第三连杆，4-第四连杆，41-搁脚连接点，42-连动杆连接点，43-连接件连接点，5-第一搁脚件，51-第二连杆连接点，52-联动点，6-连动杆，7-第二搁脚件，71-第一限位件，8-搁脚连接件，81-第一连接件，82-第二连接件，9-搁脚板组件，91-第一搁脚板，92-第二搁脚板，10-联动支架，11-背部机构，12-支撑结构，121-底座，122-第一支撑件，123-第二支撑件，124- 底座联动组件，125-座椅连动件，126-背部连动件，13-联动结构，131-侧板，132-第一联动件，133-第二联动件，134-第三联动件，14-传动结构，141-第一传动件，142-第二传动件。
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”、“左”、“右”、“顶”、“底”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。
实施例
本实施例提供了一种搁脚延伸机构，如图1所示，包括：第一连杆1、第二连杆2、第三连杆3、第四连杆4、第一搁脚件5、连动杆6、第二搁脚件7和搁脚连接件8；
第二连杆2一端与第一搁脚件5铰接，第二连杆2的另一端与第一连杆1铰接，第一连杆1用于与座椅的联动支架10铰接，第四连杆4一端与第二搁脚件7铰接，第四连杆4的另一端与第三连杆3铰接，第一搁脚件5与连动杆6的一端铰接，连动杆6的另一端与第四连杆4的中部铰接；
搁脚连接件8包括第一连接件81和第二连接件82，第一连接件81一端 与第二搁脚件7的中部铰接，第一连接件81的另一端与第二连接件82的一端铰接，第二连接件82的另一端与第二连杆2的中部铰接，第二连接件82的中部与第四连杆4的中部铰接。
在本实施例中，第一搁脚件5通过连动杆6与第四连杆4铰接，第四连杆与第二搁脚件连接，第一搁脚件5与第四连杆没有连接关系，增加了第一搁脚件和第二搁脚件在收缩或伸展过程中的运动灵活性。第一搁脚件5、连动杆6、第四连杆4、第二连接件82和第二连杆2构成五连杆机构，第一搁脚件可以更加灵活的与第二搁脚件靠拢或分隔开，增加了分隔后第一搁脚件与第二搁脚件的距离，增加了第二搁脚件的延伸长度。
具体地，第二搁脚件7的中部设置有第一限位件71，当第一限位件71与第二连接件82配合抵靠时，第二搁脚件7收缩到极限位置。在本实施例中，第一限位件71用于限制第二搁脚件的最大收缩位置，避免第二搁脚件收不到预定位置，出现松动现象。同时保持第二搁脚件的搁脚面与第一搁脚件的搁脚面都处于竖直平面内，提高座椅收缩状态时的美观性。
具体地，第二连杆2靠近第一连杆1的一端设置有第一连接点21，第二连杆2在第一连接点21处与第三连杆3的中部铰接，第三连杆3用于与联动支架10连接。第二连杆2与第三连杆3交叉连接。
具体地，第二连杆2靠近第一搁脚件5的一端设有第二连接点22，第二连杆2在第二连接点22处与第二连接件82连接。在本实施例中，第一连接件81和第二连接件82用于连接并支撑第二搁脚件7，第二搁脚件7、第一连接件81、第二连接件82与第四连杆4构成可以折叠和伸展的四连杆机构，用于支撑和带动第二搁脚件7伸展。
具体地，第四连杆4靠近第二搁脚件7的一端依次设置有搁脚连接点41、连动杆连接点42和连接件连接点43；第四连杆4在搁脚连接点41处与第二搁脚件7连接，第四连杆4在连动杆连接点42处与连动杆6连接，第四连杆4在连接件连接点43处与第二连接件82连接，连动杆连接点42设置在搁脚连接点41与连接件连接点43之间。
具体地，第一搁脚件5上设置有第二连杆连接点51和联动点52，联动点52到连动杆连接点42的距离大于联动点52到第二连杆连接点51的距离。具体地，联动点52到第二连杆连接点51的距离小于联动点52到连动杆连接 点42的距离，使得第一搁脚件5在伸展时第二连杆2带动第二连杆连接点51相对联动点52向下运动，使得第一搁脚件5的搁脚面顺利转动到搁脚面朝上的水平位置，使第一搁脚件的展开更加灵活和快速。
具体地，在本实施例中，第一连杆1、第二连杆2、第三连杆3、第四连杆4、第一搁脚件5、连动杆6、第二搁脚件7和搁脚连接件8之间的连接均为可枢转的连接或铰接，各个零件之间可以通过转轴、轴销、铆钉、螺栓和螺母的组合，或者其它可以实现可枢转连接的紧固件连接。
优选地，在本实施例中，当搁脚延伸机构收缩到极限位置时，第一搁脚件5位于第二搁脚件7的上方，第一搁脚件5的搁脚面可以与第二搁脚件7的搁脚面处于同一竖直平面内。当搁脚延伸机构从收缩位置伸展到极限位置时，第一搁脚件5与第二搁脚件7的搁脚面转动朝上，且第一搁脚件5与第二搁脚件7彼此间隔开。
具体地，如图2所示，还包括搁脚板组件9，搁脚板组件9包括第一搁脚板91和第二搁脚板92，第一搁脚板91与第一搁脚件5连接，第二搁脚板92与第二搁脚件7连接。具体地，第一搁脚件和第二搁脚件上分别设置有向内弯折的搁脚面，搁脚面用于与搁脚板固定连接，即第一搁脚板和第二搁脚板分别固定在其对应的搁脚面上。
在本实施例中，如图2和3所示，座椅联动支架10驱动第一连杆1和第三连杆3转动，使得搁脚延伸机构从图2所示的收缩位置移动到图3所示的伸展位置，伸展位置中第一搁脚件5和第二搁脚件7的搁脚面处于水平的位置。在搁脚延伸机构从收缩位置伸展到极限位置的过程中，第二连杆2带动第一搁脚件5向上转动，连动杆6随第一搁脚件5转动，使第一搁脚件5转动更灵活的同时支撑第一搁脚件5，第四连杆4带动第二搁脚件7和搁脚连接件8向前延伸和向上转动，直到第二搁脚件7伸展到极限位置。在搁脚延伸机构从伸展位置收缩到极限位置的过程中，搁脚延伸机构中各部件运动方向与伸展过程中相反。
在一些实施例中，当搁脚延伸机构伸展到极限位置时，第一搁脚件和第二搁脚件之间的距离大于140mm，优选地，可以为145mm、147mm、150mm或155mm，增加了第一搁脚件和第二搁脚件伸展后的间隔距离。
本发明搁脚延伸机构的第一搁脚件通过连动杆与第四连杆铰接，使得第 一搁脚件和第二搁脚件可以更加灵活的靠拢和分隔开，收缩时，两搁脚件收回靠拢，占用空间小；伸展时，搁脚延伸机构的伸展长度增加，能够更好的支撑腿部和脚部，提高座椅舒适性和满足不同身高用户的使用需求。
本实施例还提供一种座椅伸缩装置，如图2-5所示，包括：搁脚延伸机构，联动支架10和背部机构11；联动支架10一端与背部机构11连接，联动支架10的另一端与搁脚延伸机构连接，搁脚延伸机构与搁脚板组件9连接。
具体地，联动支架10包括支撑结构12和联动结构13，支撑结构12包括底座121、第一支撑件122、第二支撑件123和底座连动组件124，其中，底座121的一端与第一支撑件122连接，底座121的另一端和第二支撑件123连接，底座连动组件124设置在第一支撑件122和第二支撑件123之间。具体地，底座连动组件124包括：座椅连动件125和背部连动件126，座椅连动件125一端与第一支撑件122连接，座椅连动件125的另一端与背部连动件126连接。
具体地，联动结构13包括：侧板131、第一联动件132、第二联动件133和第三联动件134，第二联动件133的中部与侧板131转动连接，第二联动件133一端与第一联动件132的一端连接，第一联动件132的另一端与第一支撑件122连接，第二联动件133的另一端与第三联动件134的一端连接，第三联动件134另一端与搁脚延伸机构连接；
具体地，联动支架10还包括传动结构14，传动结构14包括相连接的第一传动件141和第二传动件142，第一传动件用于与驱动装置连接，第二传动件与搁脚延伸机构连接，驱动装置用于通过传动结构驱动联动支架移动。在一些实施例中，驱动装置可以为手动驱动装置；在另一些实施例中，驱动装置可以为电动驱动装置，电动驱动装置可以为推杆电机或滑块电机驱动装置。
具体地，在本实施例中，背部机构11与联动结构13的侧板131连接，通过联动支架10的移动带动背部机构11和搁脚延伸机构伸展或收缩。
在本实施例中，搁脚延伸机构和背部机构可以连续进行调节，当仅搁脚延伸机构伸展时，对应的座椅为休闲姿位置，当搁脚延伸机构和背部机构都伸展到极限位置时，对应的座椅为躺姿位置，当搁脚延伸机构和背部机构收缩到极限位置时，对应的座椅为坐姿位置。
本实施例一种搁脚延伸机构及座椅伸缩装置，通过调整搁脚延伸机构结构，使搁脚延伸机构的伸缩更加灵活、伸展长度增加，能够更好的支撑腿部和脚部，提高座椅舒适性和满足不同身高用户的使用需求。
本实施例座椅伸缩装置为两组，两组伸缩装置基于底座中心面相间隔且对称设置。座椅伸缩装置上设置有座框，座椅伸缩装置经过软包为成品沙发。
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 (10)

  1. 一种搁脚延伸机构，其特征在于，包括：第一连杆(1)、第二连杆(2)、第三连杆(3)、第四连杆(4)、第一搁脚件(5)、连动杆(6)、第二搁脚件(7)和搁脚连接件(8)；
    所述第二连杆(2)一端与所述第一搁脚件(5)铰接，另一端与所述第一连杆(1)铰接，所述第一连杆(1)用于与座椅的联动支架(10)铰接，所述第四连杆(4)一端与所述第二搁脚件(7)铰接，另一端与所述第三连杆(3)铰接，所述第一搁脚件(5)与所述连动杆(6)的一端铰接，所述连动杆(6)的另一端与所述第四连杆(4)的中部铰接；
    所述搁脚连接件(8)包括第一连接件(81)和第二连接件(82)，所述第一连接件(81)一端与所述第二搁脚件(7)的中部铰接，另一端与所述第二连接件(82)的一端铰接，所述第二连接件(82)的另一端与第二连杆(2)的中部铰接，所述第二连接件(82)的中部与所述第四连杆(4)的中部铰接。
  2. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，所述第二搁脚件(7)的中部设置有第一限位件(71)，当所述第一限位件(71)与所述第二连接件(82)配合抵靠时，所述第二搁脚件(7)收缩到极限位置，用于防止搁脚件出现松动现象。
  3. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，所述第二连杆(2)靠近所述第一连杆(1)的一端设置有第一连接点(21)，所述第二连杆(2)在所述第一连接点(21)处与所述第三连杆(3)的中部铰接，所述第三连杆(3)用于与所述联动支架(10)连接。
  4. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，所述第二连杆(2)靠近所述第一搁脚件(5)的一端设有第二连接点(22)，所述第二连杆(2)在所述第二连接点(22)处与所述第二连接件(82)连接。
  5. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，所述第四连杆(4)靠近所述第二搁脚件(7)的一端依次设置有搁脚连接点(41)、连动杆连接点(42)和连接件连接点(43)；
    所述第四连杆(4)在所述搁脚连接点(41)处与所述第二搁脚件(7)连接，所述第四连杆(4)在所述连动杆连接点(42)处与所述连动杆(6) 连接，所述第四连杆(4)在所述连接件连接点(43)处与所述第二连接件(82)连接，所述连动杆连接点(42)设置在所述搁脚连接点(41)与所述连接件连接点(43)之间。
  6. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，所述第一搁脚件(5)上设置有第二连杆连接点(51)和联动点(52)，所述联动点(52)到所述连动杆连接点(42)的距离大于所述联动点(52)到所述第二连杆连接点(51)的距离。
  7. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，当所述搁脚延伸机构收缩到极限位置时，所述第一搁脚件(5)位于所述第二搁脚件(7)的上方，所述第一搁脚件(5)的搁脚面与所述第二搁脚件(7)的搁脚面处于同一竖直平面内。
  8. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，当所述搁脚延伸机构从收缩位置伸展到极限位置时，所述第一搁脚件(5)与所述第二搁脚件(7)的搁脚面转动朝上，且所述第一搁脚件(5)与所述第二搁脚件(7)彼此间隔开。
  9. 根据权利要求1所述的一种搁脚延伸机构，其特征在于，还包括搁脚板组件(9)，所述搁脚板组件(9)包括第一搁脚板(91)和第二搁脚板(92)，所述第一搁脚板(91)与所述第一搁脚件(5)连接，所述第二搁脚板(92)与所述第二搁脚件(7)连接。
  10. 一种座椅伸缩装置，其特征在于，包括：如权利要求1-9项中任意一项所述的搁脚延伸机构，联动支架(10)和背部机构(11)；所述联动支架(10)一端与所述背部机构(11)连接，所述联动支架(10)的另一端与所述搁脚延伸机构连接，所述搁脚延伸机构与所述搁脚板组件(9)连接。
PCT/CN2022/109700 2021-08-03 2022-08-02 一种搁脚延伸机构及座椅伸缩装置 WO2023011469A1 (zh)

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