WO2021244102A1 - 一种机械式伸展沙发铁架 - Google Patents

一种机械式伸展沙发铁架 Download PDF

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Publication number
WO2021244102A1
WO2021244102A1 PCT/CN2021/081088 CN2021081088W WO2021244102A1 WO 2021244102 A1 WO2021244102 A1 WO 2021244102A1 CN 2021081088 W CN2021081088 W CN 2021081088W WO 2021244102 A1 WO2021244102 A1 WO 2021244102A1
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WIPO (PCT)
Prior art keywords
linkage
seat
assembly
component
connection point
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PCT/CN2021/081088
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English (en)
French (fr)
Inventor
李晓鸿
李元坤
王海波
吕战征
Original Assignee
锐迈机械科技（吴江）有限公司
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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 US17/516,622 priority Critical patent/US11700942B2/en
Publication of WO2021244102A1 publication Critical patent/WO2021244102A1/zh

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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
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
    • A47C20/10—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously using rods
    • A47C20/12—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously using rods using telescopic rods
    • 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
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds

Definitions

  • the invention relates to the field of sofas, in particular to a mechanical extension sofa iron frame.
  • the existing sofa device has the following shortcomings:
  • the sofa stretching device on the market has poor comfort, and the user cannot experience the feeling of weightlessness after lying down, and the legs and head move at the same time, so the structural stability is poor.
  • the purpose of the present invention is to provide a mechanical extension sofa iron frame, which can move the legs and head at the same time, so that when a person is lying on his back, his legs are higher than his head, and one experience A feeling of complete weightlessness, stable structure, clever design, strong applicability, and easy promotion.
  • the present invention provides a mechanical extension sofa iron frame, including: a seat assembly, a linkage assembly, a back assembly and a leg assembly;
  • the seat assembly includes a base, a first rotating member, a second rotating member, and a seat linkage structure, the first rotating member and the second rotating member are both connected to the base, and the seat linkage structure Arranged between the first rotating part and the second rotating part;
  • the seat linkage structure includes a back linkage member, the back linkage member is provided with a seat connection point, a transmission connection point, and a back connection point, the seat connection point is connected to the first rotating member, and the back The connection point is connected to the back component, wherein the distance between the transmission connection point and the seat connection point is L1, the distance between the transmission connection point and the back connection point is L2, and the ratio range of L1 to L2 0.95 ⁇ 0.75;
  • the back assembly and the leg assembly are respectively connected with the linkage assembly, and the linkage assembly is connected with the seat linkage structure.
  • both the back component and the leg component can be adjusted to a stretched state through the seat component, wherein the back component and the leg component are adjusted simultaneously.
  • the height of the highest point of the leg component is greater than the height of the highest point of the back component, wherein the height of the leg component
  • the height difference between the highest point and the highest point of the back component is H, and H ⁇ 300mm.
  • the included angle between the linkage component and the base is ⁇
  • the corresponding included angle between the back component and the base is ⁇
  • the base is set on the ground.
  • the seat linkage structure further includes: a seat transmission linkage and a seat linkage, one end of the seat transmission linkage is connected with the transmission connection point, and the other end of the seat transmission linkage is connected with the One end of the seat linkage is connected, and the remaining two ends of the seat linkage are respectively connected with the second rotating member and the linkage assembly.
  • the back linkage member further includes a linkage connection point, and the linkage connection point is connected to the linkage assembly.
  • the linkage assembly includes a side linkage member and a fixed connection member, one end of the side linkage member is connected to the back assembly, the other end of the side linkage member is connected to the leg assembly, and the fixing One end of the connecting piece is connected with the side linkage piece, and the other end of the fixed connecting piece is connected with the second rotating piece.
  • the present invention has the following beneficial effects:
  • connection points The distance between the connection points is different.
  • the height difference between the highest point of the lower part and the highest point of the back part makes the person lying on his back in a low position
  • the mechanical extension sofa iron frame of the present invention can make the leg assembly and the head assembly move at the same time through the seat linkage structure, and improve the comfort of changing from a sitting posture to a lying posture.
  • the mechanical extension sofa iron frame of the present invention improves the stability of the simultaneous movement of the leg assembly and the back assembly through the fixed connecting piece in the linkage assembly.
  • Figure 1 is a schematic structural diagram of a mechanically extending sofa iron frame provided by an embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a seat assembly provided by an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a back linkage provided by an embodiment of the present invention.
  • Figure 4 is an extended state diagram of a mechanically extended sofa iron frame provided by an embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of a linkage assembly provided by an embodiment of the present invention.
  • Fig. 6 is another structural schematic diagram of the mechanical extension sofa iron frame provided by the embodiment of the present invention.
  • the "one embodiment” or “embodiment” referred to herein refers to a specific 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”, “left”, “right”, “top”, “bottom”, etc. are based on the drawings shown
  • the orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. Moreover, the terms “first”, “second”, etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein.
  • the first embodiment provides a mechanical extension sofa iron frame.
  • the mechanical extension sofa iron frame includes: a seat assembly 1, Linkage assembly 2, back assembly 3 and leg assembly 4;
  • the seat assembly 1 includes a base 11, a first rotating member 12, a second rotating member 13, and a seat linkage structure 14.
  • the first rotating member 12 and the second rotating member 13 are both connected to the base 11 Connected, the seat linkage structure 14 is arranged between the first rotating member 12 and the second rotating member 13;
  • the seat linkage structure 14 includes a back linkage member 141.
  • the back linkage member 141 is provided with a seat connection point 1411, a transmission connection point 1412, and a back connection point 1413.
  • the seat connection point 1411 is connected to the first
  • the rotating member 12 is connected
  • the back connection point 1413 is connected to the back assembly 3, wherein the distance between the transmission connection point 1412 and the seat connection point 1411 is L1, and the transmission connection point 1412 is connected to the back
  • the distance of the connection point 1413 is L2, and the ratio of L1 to L2 ranges from 0.95 to 0.75;
  • the back assembly 3 and the leg assembly 4 are respectively connected with the linkage assembly 2, and the linkage assembly 2 is connected with the seat linkage structure 14.
  • the ratio range of L1 to L2 is 0.95.
  • the back assembly 3 and the leg assembly 4 can be adjusted to the extended state by the seat assembly 1, wherein the back assembly 3 and the leg assembly 4 can be adjusted at the same time, which can make The leg assembly and the head assembly move at the same time to improve the comfort of changing from a sitting posture to a lying posture.
  • the height of the highest point of the leg component 4 is greater than the height of the highest point of the back component 3, wherein the The height difference between the highest point of the leg component 4 and the highest point of the back component 3 is H, and H ⁇ 300mm.
  • the height difference H between the highest point of the leg component 4 and the highest point of the back component 3 is 260 mm.
  • the base 11 is set on the ground, and it is ensured that the base 11 is flush with the ground as much as possible.
  • the angle between the linkage assembly 2 and the base 11 is ⁇ , and the corresponding back set
  • the angle between the part 3 and the base 11 is ⁇ , wherein, when the back component 3 and the leg component
  • both the back assembly 3 and the leg assembly 4 are adjusted to the extended state, ⁇ 20°, and the corresponding ⁇ 20°, by limiting the distance and angle, the whole device is in the extended state To achieve a suitable angle, enhance people's comfort.
  • the seat linkage structure 14 further includes: a seat transmission linkage 142 and a seat linkage 143, one end of the seat transmission linkage 142 is connected to the transmission connection point 1412, and the seat transmission linkage 142 The other end of the seat linkage member 143 is connected to one end of the seat linkage member 143, and the remaining two ends of the seat linkage member 143 are respectively connected to the second rotating member 13 and the linkage assembly 2.
  • the back linkage 141 further includes a linkage connection point 1414, and the linkage connection point 1414 is connected to the linkage assembly 2.
  • connection point of the linkage connection point 1414 and the linkage assembly 2 is a point A, and the connection point of the seat linkage 143 and the linkage assembly 2 is a different point.
  • the linkage assembly 2 includes a side linkage 21 and a fixed connecting piece 22.
  • One end of the side linkage 21 is connected to the back assembly 3, and the other end of the side linkage 21 is connected to the leg.
  • the assembly 4 is connected, one end of the fixed connecting piece 22 is connected with the side linkage 21, and the other end of the fixed connecting piece 22 is connected with the second rotating piece 13, wherein the fixed connecting piece 22 is
  • the arc shape improves the stability of the simultaneous movement of the leg assembly and the back assembly.
  • the linkage assembly 2 further includes: a leg driving member 23, a leg transmission member 24, a first connecting member 25 and a second connecting member 26;
  • One end of the first connecting piece 25 is connected to the side linkage 21, the other end of the first connecting piece 25 is connected to one end of the second connecting piece 26, and the other end of the second connecting piece 26 is connected to the The leg assembly 4 is connected;
  • the leg driving member 23 is connected to the leg assembly 4 through the leg transmission member 24, so that the transmission performance is good and jamming is avoided.
  • the leg transmission member 24 is driven by a single motor or manually.
  • the back assembly 3 further includes a backrest 31 and a back connector 32.
  • One end of the backrest 31 is connected to the back connector 32, and the other end of the backrest 31 is connected to the side portion.
  • the linkage 21 is connected, wherein the back connector 32 is connected to the back connection point 1413.
  • the leg assembly 4 includes: a foot plate 41, a first leg connecting structure 42 and a second leg connecting structure 43, the first leg connecting structure 42 and the second leg connecting structure 43 are both It is connected to the foot board 41, the first leg connecting structure 42 is connected to the second connecting member 26, and the second leg connecting structure 43 is connected to the side link 21.
  • the mechanically stretchable sofa iron frame further includes a support assembly 5, the support assembly 5 includes a first support 51 and a second support 52, the first support 51 is provided on the back assembly 3, the second support 52 is provided on the leg assembly 4.
  • the first embodiment can satisfy the weightlessness of people in the supine state while ensuring the stability of the simultaneous movement of the back component and the leg component.
  • the second embodiment provides a mechanical extension sofa iron frame.
  • the difference from the first embodiment is that the ratio range of L1 to L2 is 0.75.
  • the height difference between the highest point of the leg component 4 and the highest point of the back component 3 is 300 mm.
  • the angle between the linkage assembly 2 and the base 11 is ⁇
  • the corresponding angle between the back assembly 3 and the base 11 is ⁇ .
  • both the back assembly 3 and the leg assembly 4 are adjusted to the extended state, ⁇ 22°, the corresponding ⁇ 19°, by limiting the distance and angle, the whole device is in the extended state To achieve a suitable angle, enhance people's comfort.
  • the second embodiment can maximize the height difference between the highest point of the leg component and the highest point of the back component, and improve
  • the third embodiment provides a mechanical extension sofa iron frame.
  • the difference from the first embodiment is that the ratio range of L1 to L2 is 0.6.
  • the height difference between the highest point of the leg component 4 and the highest point of the back component 3 is H 280 mm.
  • the angle between the linkage assembly 2 and the base 11 is ⁇
  • the corresponding angle between the back assembly 3 and the base 11 is ⁇ .
  • both the back assembly 3 and the leg assembly 4 are adjusted to the extended state, ⁇ 21°, corresponding ⁇ 19.5°, and the entire device is in the extended state by limiting the distance and angle To achieve a suitable angle, enhance people's comfort.
  • the third embodiment can take into account the feeling of weightlessness when people are lying on their back, and the back components and leg components are the same.
  • Implementations 1 to 3 can be achieved through the difference in the distance between the connection points of the back linkage in the seat linkage structure.
  • the back assembly and the leg assembly are adjusted to the extended state, the highest point of the leg assembly and the highest point of the back assembly can be raised
  • the height difference makes people lie on their backs in a low position, with their legs higher than their heads, and experience a feeling of complete weightlessness.
  • the structure is stable, the design is ingenious, and the applicability is strong, which is convenient for promotion.

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

Abstract

一种机械式伸展沙发铁架，其中，座椅组件(1)包括：底座(11)、第一转动件(12)、第二转动件(13)和设置在第一转动件(12)和第二转动件(13)之间的座椅联动结构(14)，第一转动件(12)和第二转动件(13)均与底座(11)连接；座椅联动结构(14)包括：背部联动件(141)，背部联动件(141)设有座椅连接点(1411)、传动连接点(1412)和背部连接点(1413)，座椅连接点(1411)与第一转动件(12)连接，背部连接点(1413)与背部组件(3)连接，其中，传动连接点(1412)与座椅连接点(1411)的距离为L1，传动连接点(1412)与背部连接点(1413)的距离为L2，L1与L2的比值范围为0.95～0.75；背部组件(3)和腿部组件(4)分别与联动组件(2)连接，联动组件(2)与座椅联动结构(14)连接；能够腿部和头部同时运动，使人处于仰卧状态时的腿部更高于头部，体验到一种完全失重的感觉，结构稳定。

Description

一种机械式伸展沙发铁架 技术领域
本发明涉及沙发领域，特别涉及一种机械式伸展沙发铁架。
背景技术
目前，随着国内生产力水平的提高和社会经济水平的发展，人们的生活水平越来越高，对家具的要求也越来越高。家具中的沙发、摇椅、座椅等随处可见，有些沙发不仅脚踏能够伸出，靠背也能上升或下降。
但是，现有的沙发装置存在以下缺陷：
市面上的沙发伸展装置舒适性比较差，使用人躺上去之后无法体验失重的感觉，且腿部和头部同时运动，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机械式伸展沙发铁架，能够腿部和头部同时运动，使人处于仰卧状态时的腿部更高于头部，体验到一种完全失重的感觉，结构稳定，设计巧妙，适用性强，便于推广。
为了解决上述问题，本发明提供一种机械式伸展沙发铁架，包括：座椅组件、联动组件、背部组件和腿部组件；
所述座椅组件包括：底座、第一转动件、第二转动件和座椅联动结构，所述第一转动件和所述第二转动件均与所述底座连接，所述座椅联动结构设置在所述第一转动件和所述第二转动件之间；
所述座椅联动结构包括：背部联动件，所述背部联动件设有座椅连接点、传动连接点和背部连接点，所述座椅连接点与所述第一转动件连接，所述背部连接点与所述背部组件连接，其中，所述传动连接点与所述座椅连接点的距离为L1，所述传动连接点与所述背部连接点的距离为L2，L1与L2的比值范围为0.95～0.75；
所述背部组件和所述腿部组件分别与所述联动组件连接，所述联动组件与所述座椅联动结构连接。
进一步地，所述背部组件和所述腿部组件均可通过所述座椅组件调节为伸展状态，其中，所述背部组件和所述腿部组件同时进行调节。
进一步地，当所述背部组件和所述腿部组件均调节为伸展状态时，所述腿部组件的最高点的高度大于所述背部组件的最高点的高度，其中，所述腿部组件的最高点与所述背部组件的最高点的高度差为H，H≤300mm。
进一步地，当所述背部组件和所述腿部组件均调节为伸展状态的过程中，40mm≤H≤300mm。
进一步地，所述联动组件与所述底座夹角为α，相对应的所述背部组件与所述底座的夹角为β，其中，当所述背部组件和所述腿部组件均调节为伸展状 态时，α＝22°，相对应的β＝19°。
进一步地，当所述背部组件和所述腿部组件均调节为伸展状态的过程中，α≤22°，相对应的β≥19°。
进一步地，所述底座设置在地面上。
进一步地，所述座椅联动结构还包括：座椅传动联动和座椅联动件，所述座椅传动联动的一端与所述传动连接点连接，所述座椅传动联动的另一端与所述座椅联动件的一端连接，所述座椅联动件的其余两端分别与所述第二转动件和所述联动组件连接。
进一步地，所述背部联动件还包括联动连接点，所述联动连接点与所述联动组件连接。
进一步地，所述联动组件包括侧部联动件和固定连接件，所述侧部联动件一端与所述背部组件连接，所述侧部联动件另一端与所述腿部组件连接，所述固定连接件的一端与所述侧部联动件连接，所述固定连接件的另一端与所述第二转动件连接。
由于上述技术方案，本发明具有以下有益效果：
1)本发明的一种机械式伸展沙发铁架，通过座椅联动结构中的背部联动件的
连接点之间的距离不同，在背部组件和腿部组件调节为伸展状态时，提高腿
部组件最高点与背部组件最高点的高度差，使人在低位处于仰卧状态，腿部
更高于头部，体验到一种完全失重的感觉，结构稳定，设计巧妙，适用性强，
便于推广；
2)本发明的一种机械式伸展沙发铁架，通过座椅联动结构，能够使腿部组件和头部组件同时运动，提高由坐姿变为躺姿的舒适性。
3)本发明的一种机械式伸展沙发铁架，通过联动组件中的固定连接件，提高腿部组件和背部组件同时运动的稳定性。
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是本发明实施例提供的机械式伸展沙发铁架的结构示意图；
图2是本发明实施例提供的座椅组件的结构示意图；
图3是本发明实施例提供的背部联动件的结构示意图；
图4是本发明实施例提供的机械式伸展沙发铁架的伸展状态图；
图5是本发明实施例提供的联动组件的结构示意图；
图6是本发明实施例提供的机械式伸展沙发铁架的的另一结构示意图。
其中，1-座椅组件，2-联动组件，3-背部组件，4-腿部组件，5-支撑组件，11-底座，12-第一转动件，13-第二转动件，14-座椅联动结构，1411-座椅连接点， 1412-传动连接点，1413-背部连接点，1414-联动连接点，21-侧部联动件，22-固定连接件，23-腿部驱动件，24-腿部传动件，25-第一连接件，26-第二连接件，31-背部靠件，32-背部连接件，41-脚板，42-第一腿部连接结构，43-第二腿部连接结构，51-第一支撑件，52-第二支撑件。
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，都属于本实用新型保护的范围。
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。
实施例一
本实施例一提供一种机械式伸展沙发铁架，结合图1、图2、图3、图4、图5和图6所示，所述机械式伸展沙发铁架包括：座椅组件1、联动组件2、背部组件3和腿部组件4；
所述座椅组件1包括：底座11、第一转动件12、第二转动件13和座椅联动结构14，所述第一转动件12和所述第二转动件13均与所述底座11连接，所述座椅联动结构14设置在所述第一转动件12和所述第二转动件13之间；
所述座椅联动结构14包括：背部联动件141，所述背部联动件141设有座椅连接点1411、传动连接点1412和背部连接点1413，所述座椅连接点1411与所述第一转动件12连接，所述背部连接点1413与所述背部组件3连接，其中，所述传动连接点1412与所述座椅连接点1411的距离为L1，所述传动连接点1412与所述背部连接点1413的距离为L2，L1与L2的比值范围为0.95～0.75；
所述背部组件3和所述腿部组件4分别与所述联动组件2连接，所述联动组件2与所述座椅联动结构14连接。
优选地，L1与L2的比值范围为0.95。
具体地，所述背部组件3和所述腿部组件4均可通过所述座椅组件1调节 为伸展状态，其中，所述背部组件3和所述腿部组件4同时进行调节，通能够使腿部组件和头部组件同时运动，提高由坐姿变为躺姿的舒适性。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态时，所述腿部组件4的最高点的高度大于所述背部组件3的最高点的高度，其中，所述腿部组件4的最高点与所述背部组件3的最高点的高度差为H，H≤300mm。
优选地，所述腿部组件4的最高点与所述背部组件3的最高点的高度差为H为260mm。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，40mm≤H≤260mm。
具体地，所述底座11设置在地面上，尽量保证所述底座11与地面平齐。
进一步地，所述联动组件2与所述底座11夹角为α，相对应的所述背部组
件3与所述底座11的夹角为β，其中，当所述背部组件3和所述腿部组件
4均调节为伸展状态时，α＝20°，相对应的β＝20°。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，α≤20°，相对应的β≥20°，通过限定距离和角度，使整体装置在伸展状态中达到合适的角度，增强人的舒适度。
具体地，所述座椅联动结构14还包括：座椅传动联动142和座椅联动件143，所述座椅传动联动142的一端与所述传动连接点1412连接，所述座椅传动联动142的另一端与所述座椅联动件143的一端连接，所述座椅联动件143的其余两端分别与所述第二转动件13和所述联动组件2连接。
进一步地，所述背部联动件141还包括联动连接点1414，所述联动连接点1414与所述联动组件2连接。
进一步地，所述联动连接点1414与所述联动组件2连接处为A处，所述座椅联动件143与所述联动组件2连接处为B处不同点。
具体地，所述联动组件2包括侧部联动件21和固定连接件22，所述侧部联动件21一端与所述背部组件3连接，所述侧部联动件21另一端与所述腿部组件4连接，所述固定连接件22的一端与所述侧部联动件21连接，所述固定连接件22的另一端与所述第二转动件13连接，其中，所述固定连接件22呈弧形，提高腿部组件和背部组件同时运动的稳定性。
进一步地，所述联动组件2还包括：腿部驱动件23、腿部传动件24、第一连接件25和第二连接件26；
所述第一连接件25一端与所述侧部联动件21连接，所述第一连接件25另一端与所述第二连接件26一端连接，所述第二连接件26另一端与所述腿部组件4连接；
所述腿部驱动件23通过所述腿部传动件24与所述腿部组件4连接，这样传动性好，避免卡死，所述腿部传动件24通过单电机驱动或手动驱动。
具体地，所述背部组件3还包括：背部靠件31和背部连接件32，所述背部靠件31一端与所述背部连接件32连接，所述背部靠件31另一端与所述侧部联动件21连接，其中，所述背部连接件32与所述背部连接点1413连接。
具体地，所述腿部组件4包括：脚板41、第一腿部连接结构42和第二腿部连 接结构43，所述第一腿部连接结构42和所述第二腿部连接结构43均与所述脚板41连接，所述第一腿部连接结构42与所述第二连接件26连接，所述第二腿部连接结构43与所述侧部联动件21连接。
一些实施例中，所述机械式伸展沙发铁架还包括支撑组件5，所述支撑组件5包括第一支撑件51和第二支撑件52，所述第一支撑件51设置在所述背部组件3上，所述第二支撑件52设置在所述腿部组件4上。
实施例一能够在保证背部组件和腿部组件同时运动的稳定性下，满足人们在处于仰卧状态的失重感。
实施例二
本实施例二提供一种机械式伸展沙发铁架，与实施例一的区别在于：L1与L2的比值范围为0.75。
进一步地，所述腿部组件4的最高点与所述背部组件3的最高点的高度差为H为300mm。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，40mm≤H≤300mm。
进一步地，所述联动组件2与所述底座11夹角为α，相对应的所述背部组件3与所述底座11的夹角为β，其中，当所述背部组件3和所述腿部组件4均调节为伸展状态时，α＝22°，相对应的β＝19°。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，α≤22°，相对应的β≥19°，通过限定距离和角度，使整体装置在伸展状态中达到合适的角度，增强人的舒适度。
进一步地，实施例二的其他部件或结构均与实施例一相同，再次不再赘述。
实施例二能够使腿部组件的最高点与背部组件最高点的高度差最大化，提高
人们处于仰卧状态的失重感。
实施例三
本实施例三提供一种机械式伸展沙发铁架，与实施例一的区别在于：L1与L2的比值范围为0.6。
进一步地，所述腿部组件4的最高点与所述背部组件3的最高点的高度差为H为280mm。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，40mm≤H≤280mm。
进一步地，所述联动组件2与所述底座11夹角为α，相对应的所述背部组件3与所述底座11的夹角为β，其中，当所述背部组件3和所述腿部组件4均调节为伸展状态时，α＝21°，相对应的β＝19.5°。
进一步地，当所述背部组件3和所述腿部组件4均调节为伸展状态的过程中，α≤21°，相对应的β≥19.5°，通过限定距离和角度，使整体装置在伸展状态中达到合适的角度，增强人的舒适度。
进一步地，实施例三的其他部件或结构均与实施例一相同，再次不再赘述。实
施例三能够兼顾人们处于仰卧状态对失重感体验和，背部组件和腿部组件同
时运动的稳定性。
实施一至实施例三均能够通过座椅联动结构中的背部联动件的连接点之间的距离不同，在背部组件和腿部组件调节为伸展状态时，提高腿部组件最高点与背部组件最高点的高度差，使人在低位处于仰卧状态，腿部更高于头部，体验到一种完全失重的感觉，结构稳定，设计巧妙，适用性强，便于推广。
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. 一种机械式伸展沙发铁架，包括：座椅组件(1)、联动组件(2)、背部组件(3)和腿部组件(4)，其特征在于，
    所述座椅组件(1)包括：底座(11)、第一转动件(12)、第二转动件(13)和座椅联动结构(14)，所述第一转动件(12)和所述第二转动件(13)均与所述底座(11)连接，所述座椅联动结构(14)设置在所述第一转动件(12)和所述第二转动件(13)之间；
    所述座椅联动结构(14)包括：背部联动件(141)，所述背部联动件(141)设有座椅连接点(1411)、传动连接点(1412)和背部连接点(1413)，所述座椅连接点(1411)与所述第一转动件(12)连接，所述背部连接点(1413)与所述背部组件(3)连接，其中，所述传动连接点(1412)与所述座椅连接点(1411)的距离为L1，所述传动连接点(1412)与所述背部连接点(1413)的距离为L2，L1与L2的比值范围为0.95～0.75；
    所述背部组件(3)和所述腿部组件(4)分别与所述联动组件(2)连接，所述联动组件(2)与所述座椅联动结构(14)连接。
  2. 根据权利要求1所述的一种机械式伸展沙发铁架，其特征在于，所述背部组件(3)和所述腿部组件(4)均可通过所述座椅组件(1)调节为伸展状态，其中，所述背部组件(3)和所述腿部组件(4)同时进行调节。
  3. 根据权利要求2所述的一种机械式伸展沙发铁架，其特征在于，当所述背部组件(3)和所述腿部组件(4)均调节为伸展状态时，所述腿部组件(4)的最高点的高度大于所述背部组件(3)的最高点的高度，其中，所述腿部组件(4)的最高点与所述背部组件(3)的最高点的高度差为H，H≤300mm。
  4. 根据权利要求3所述的一种机械式伸展沙发铁架，其特征在于，当所述背部组件(3)和所述腿部组件(4)均调节为伸展状态的过程中，40mm≤H≤300mm。
  5. 根据权利要求2所述的一种机械式伸展沙发铁架，其特征在于，所述联 动组件(2)与所述底座(11)夹角为α，相对应的所述背部组件(3)与所述底座(11)的夹角为β，其中，当所述背部组件(3)和所述腿部组件(4)均调节为伸展状态时，α＝22°，相对应的β＝19°。
  6. 根据权利要求5所述的一种机械式伸展沙发铁架，其特征在于，当所述背部组件(3)和所述腿部组件(4)均调节为伸展状态的过程中，α≤22°，相对应的β≥19°。
  7. 根据权利要求6所述的一种机械式伸展沙发铁架，其特征在于，所述底座(11)设置在地面上。
  8. 根据权利要求1所述的一种机械式伸展沙发铁架，其特征在于，所述座椅联动结构(14)还包括：座椅传动联动(142)和座椅联动件(143)，所述座椅传动联动(142)的一端与所述传动连接点(1412)连接，所述座椅传动联动(142)的另一端与所述座椅联动件(143)的一端连接，所述座椅联动件(143)的其余两端分别与所述第二转动件(13)和所述联动组件(2)连接。
  9. 根据权利要求8所述的一种机械式伸展沙发铁架，其特征在于，所述背部联动件(141)还包括联动连接点(1414)，所述联动连接点(1414)与所述联动组件(2)连接。
  10. 根据权利要求9所述的一种机械式伸展沙发铁架，其特征在于，所述联动组件(2)包括侧部联动件(21)和固定连接件(22)，所述侧部联动件(21)一端与所述背部组件(3)连接，所述侧部联动件(21)另一端与所述腿部组件(4)连接，所述固定连接件(22)的一端与所述侧部联动件(21)连接，所述固定连接件(22)的另一端与所述第二转动件(13)连接。
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