WO2014202013A1 - 靠背位置可调节的沙发 - Google Patents

靠背位置可调节的沙发 Download PDF

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Publication number
WO2014202013A1
WO2014202013A1 PCT/CN2014/080294 CN2014080294W WO2014202013A1 WO 2014202013 A1 WO2014202013 A1 WO 2014202013A1 CN 2014080294 W CN2014080294 W CN 2014080294W WO 2014202013 A1 WO2014202013 A1 WO 2014202013A1
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WO
WIPO (PCT)
Prior art keywords
frame
sofa
rail
support frame
sofa according
Prior art date
Application number
PCT/CN2014/080294
Other languages
English (en)
French (fr)
Inventor
黄金泉
杨利明
周炜尧
Original Assignee
礼恩派(嘉兴)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 礼恩派(嘉兴)有限公司 filed Critical 礼恩派(嘉兴)有限公司
Priority to EP14814611.1A priority Critical patent/EP3011872A4/en
Priority to US14/899,585 priority patent/US10098470B2/en
Publication of WO2014202013A1 publication Critical patent/WO2014202013A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • 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
    • 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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

Definitions

  • the present invention relates to a seat, and more particularly to a sofa, and more particularly to a sofa with adjustable backrest position. Background technique
  • the seat depth of the favorite or suitable sofa i.e., the distance of the backrest relative to the front edge of the sofa.
  • the seat depth of a traditional sofa is not adjustable. For sofas that are not adjustable in depth, people who are too big or too small may have significant discomfort when sitting or leaning on.
  • the seat depth of these sofas is usually adjusted by a card slot or the like to adjust the position of the backrest according to a preset position.
  • Such a sofa can achieve a limited range of seat depth adjustment, and often because of the large shape of the sofa back, it is very difficult for the average user to adjust the position of the backrest, and in addition, due to repeated disassembly or connection, the sofa is Short life.
  • An object of the present invention is to provide a sofa which can continuously and continuously adjust the seat depth and has a simple structure and a long service life.
  • a sofa with adjustable backrest position including a seat frame, a back frame, a rail frame and a driving device
  • the rail frame includes a front and rear direction of the sofa fixedly coupled to the seat frame
  • An extended rail a first end of the support frame is coupled to the back frame
  • a second end of the support frame is coupled to the guide rail in a relatively slidable manner
  • the driving device is disposed to be coupled to the support frame To guide the sliding of the second end of the support frame relative to the guide rail.
  • the sofa according to the invention can be guided by the guide rail to the support frame Continuous adjustment of the position of the backrest.
  • the drive device is an electric motor.
  • the control of the electric motor is relatively simple and easy, so that the adjustment of the position of the backrest is more operable for the average user.
  • the rail frame includes a front cross member and a rear cross member fixedly coupled to the seat frame, and the two ends of the rail are fixedly coupled to the front cross member and the rear cross member, respectively.
  • said second end of said support frame is provided with wheels, said guide rails being provided with grooves, said wheels being rollably disposed within respective recesses.
  • the cooperation of the wheel and the groove is a rolling fit, and the friction is small, and the resistance to the driving device during the movement of the backrest position is small, so that the adjustment of the backrest position can be completed easily or even without labor.
  • the second end of the support frame is provided with connecting plates, each of which is provided with wheels on opposite sides of the connecting plate, the guide rails having a pair of rail members extending in parallel, each of the rail members extending along the longitudinal direction thereof A recess for receiving the corresponding wheel is provided. Due to the presence of the pair of rail members, the force from the back frame received by the support frame is distributed over the pair of rail members, so that the stress on the rail members is reduced, thereby extending the life of the sofa.
  • the web is positioned in a gap between the pair of rail elements.
  • the support frame and the rail frame are installed in a limited space in the seat frame, which makes the overall structure more compact.
  • the drive means is provided with a transmission which transmits power to the second end of the support frame.
  • the transmission is mounted in a gap between the pair of rail members. This configuration also has the advantage that the overall structure is more compact.
  • the first end of the support frame is provided with a mounting plate provided with mounting holes for detachable connection with the back frame.
  • the backrest frame is adapted to the needs of cleaning or replacement.
  • the sofa comprises a plurality of rails and a number of backrests corresponding to the number of rails. This makes it possible to flexibly design the overall shape of the sofa back, making the flexibility of the sofa back more possible.
  • each of the backrests is adjusted synchronously by the same drive or individually by different drive means.
  • This configuration makes it possible to further enhance the design flexibility of the sofa to meet the diverse needs of people in terms of comfort.
  • the sofa according to the present invention can continuously adjust the position of the backrest in a simple and easy manner, and can realize any adjustment of the position of the backrest to achieve different seat depths. Further, the sofa structure according to the present invention is simple and compact, requires less parts and reduces friction between components, thereby improving the durability of the sofa and increasing the service life of the sofa. DRAWINGS
  • FIG. 1 is a schematic view showing the structure of a main body frame of a sofa according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing a support frame and a rail frame of the sofa in a first deep position, wherein the guide frame is not shown for the sake of clarity.
  • Figure 3 is a schematic view showing the support frame and the rail frame of the sofa in the second deep position; and Figure 4 is a schematic cross-sectional view taken along line A-A of Figure 3. detailed description
  • a sofa 1 with adjustable backrest position includes a seat frame 10, a back frame 20, a rail frame 30, and a driving device 40, in accordance with an embodiment of the present invention.
  • the seat frame 10 is a main body frame constituting a seat surface structure for supporting the sofa.
  • the sitting surface is the main part of the sofa.
  • the seat surface structure of the sofa mainly includes elastic bandages, wooden slabs, and snake-shaped steel springs.
  • most of the sofas on the market are made of medium-density fiberboard as the bottom of the sitting structure, and the medium-density sponge and the sprayed cotton are layered on the upper layer to improve the comfort.
  • the seat surface structure shown in Fig. 1 is a serpentine steel spring structure 101.
  • Backrest frame 20 is used The person supports his back while sitting on the sofa. Therefore, the back frame 20 is disposed at a position spaced apart from the front edge of the seat frame 10 in the front-rear direction of the sofa to reserve a certain seating space. Therefore, the rail frame 30 for adjusting the position of the back frame is generally disposed in a substantially rear half region of the seat frame 10, as shown in FIG.
  • the rail frame 30 includes a guide rail 300 for guiding the movement of the back frame 20.
  • the guide rails 300 extend in the front-rear direction of the sofa.
  • the rail frame 30 further includes a front cross member 301 and a rear cross member 302 that are fixedly coupled to the seat frame 10, and the two ends of the guide rail 300 are fixedly coupled to the front cross member 301 and the rear cross member 302, respectively.
  • the "front” and “rear” mentioned in this article are relative to the static state when the sofa is placed horizontally and ready for use.
  • the edge is the front edge of the sofa, and the edge near the back of the person is the trailing edge of the sofa.
  • the distance between the front and rear edges of the sofa along the front and rear of the sofa is the depth of the sofa, and the distance between the front and back of the sofa in the front and rear direction of the sofa is the seat depth of the sofa.
  • the width direction of the sofa is perpendicular to the front-rear direction of the sofa and parallel to the horizontal plane.
  • the "sofa” as defined herein is a seat or chair having all functions equivalent to a seat, and may even include a bed having a backrest or a bezel.
  • the term "backrest” as used herein is also not to be understood as limited to the frame of the sofa for supporting the back of the human body, but can also be understood as a boundary frame for limiting the width or depth of the sitting surface of the sofa, such as the left and right handrails of the sofa. Wait.
  • the back frame 20 is coupled to the rail frame 30 by a support frame 50.
  • the back frame 20 is a separate frame structure that is detachably coupled to the first end of the support frame 50 by fasteners such as bolts.
  • the support frame 50 shown in the drawing is a bar member having a bent portion in a rectangular cross section. It will be appreciated by those skilled in the art that the support frame 50 can be designed in any cross-sectional shape as well as in any contour shape.
  • the first end of the support frame 50 is provided with a mounting plate 501
  • the back frame 20 is correspondingly provided with a mounting member 201 foithe mounting hole and the mounting member 201 on the mounting plate 501 extending in the width direction of the sofa.
  • the upper mounting holes are aligned, and a fixed connection between the back frame 20 and the support frame 50 is achieved by passing fasteners such as bolts through the aligned mounting holes.
  • the second end of the support frame 50 is aligned with the guide rails in the rail frame 30. 300 movable mating connections.
  • the support frame 50 is disposed obliquely relative to the plane in which the rails 300 are located.
  • the guide rail 300 has a pair of rail members 300a, 300b extending in parallel, the second end of the support bracket 50 being positioned in the gap between the pair of rail members, and the second end of the support bracket 50 being located
  • the rail members 300a, 300b on both sides are movably connected in a relatively slidable manner.
  • the second end of the support frame 50 is provided with a connecting plate 502 having an inverted U-shaped cross section, and the outer sides of the leg portions of the inverted U-shaped connecting plate 502 are fixedly connected to protrude outward.
  • Wheel 5020, wheel 5020 extends into recesses 301a, 301b formed in the longitudinal direction of the rails formed on rail members 300a, 300b.
  • Wheels 5020 can roll within the corresponding grooves.
  • the width of the opening of the recess is smaller than the diameter of the wheel, so that within the range of travel of the wheel, the wheel is confined within the recess without disengaging from the recess.
  • a slider 503 fixedly coupled thereto is disposed in a concave space defined by the inverted U-shaped connecting plate 502.
  • the driving device 40 for example, the electric motor, drives the slider 503 to slide along the extending direction of the rail through a transmission device such as a push rod, thereby driving the connecting plate 502 fixedly connected with the slider 503 and thus driving the supporting frame 50 and the back frame 20 along the sofa.
  • the front and rear directions are moved, so that the seat depth can be continuously adjusted.
  • a transmission such as a push rod is mounted in the gap between the pair of rail members such that a limited installation space can be utilized.
  • the forward/reverse rotation of the motor is achieved by a control switch of the electric motor to effect advance/retraction of the slider. And when the motor stops rotating, the position of the slider is locked, whereby the position of the back frame 20 is also locked, thereby preventing the back frame from slipping when subjected to the back thrust applied by the back of the human body. Since the control of the electric motor is relatively simple, only a few control buttons and corresponding control lines are required, and therefore, there is a significant advantage in terms of operability compared to the conventional manual adjustment method. And because of the continuity of the guide rail, the backrest frame is not subject to any resistance in shifting within its allowable stroke range, so it has strong continuous adjustability.
  • the space required for the installation of the electric motor is small, and those skilled in the art can install the electric motor in the lower region of the seat frame from the perspective of compact design, or the electric motor Mounted to the rail frame.
  • the transmission can also be mounted on a rail frame. From the appearance point of view, since the final formed sofa is covered with a filling pad on the seat frame, the installation of the electric motor and the rail frame does not affect the appearance of the sofa.
  • the drive device is illustrated as an electric motor, those skilled in the art will appreciate that any device that converts energy in the form of electrical or mechanical energy into a mechanical power output, such as a hydraulic drive, can be used in place of the electric motor.
  • the figure shows that the engagement of the second end of the support frame with the guide rail is achieved by the rolling of the wheel in the recess, it will be readily apparent to those skilled in the art that the second end of the support bracket 50 cooperates with the guide rail 300. It can also be achieved by a sliding fit designed to project into the groove and the sliding surface of the guide groove.
  • the inverted U-shaped web may also be designed to have a sufficiently large span so that the pair of rail members can be spanned and that the leg sides of the inverted U-shaped web are disposed inwardly The projection and the projection engage with grooves that are respectively disposed on the pair of rail members that open in opposite directions to each other.
  • the inverted U-shape is connected to a ridge or ball that mates with the groove. Therefore, the mating structure of the second end of the support frame and the guide rail includes, but is not limited to, the wheel-groove structure shown, but can be embodied as any complementary/interlocking shape that can slide relative to achieve the guiding function. Match the structure.
  • the sofa shown in the drawings has two backrest brackets 20 and corresponding support brackets and guide rails, it will be appreciated by those skilled in the art that the number of backrest brackets is not limited to the number shown, for example, one or three may be provided. , four or more backrests. Accordingly, the number of rails and the number of supports can vary. The position of these backrests can be adjusted synchronously by the same drive or individually by different drive units to meet a variety of individual needs.
  • the sofa when the seat depth is adjusted to a sufficiently wide position, the sofa can have the function of lying down, and no longer only has the function of sitting. At this time, the adjustment of the position of the backrest is to adjust the depth of the sofa to suit the difference. Lying needs.
  • the structure for adjusting the position of the backrest disclosed in the present invention can also be applied to adjust the position of the left and right handrails of the sofa, adjust the position of the backrest of the chair, adjust the position of the bed of the bed, and the like.
  • a variety of seating, including sofas, chairs, beds, etc., can benefit from the disclosed position for adjusting the backrest The application of the structure.

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

Abstract

一种靠背位置可调节的沙发（1），包括座位架（10）、靠背架（20）、导轨架（30）以及驱动装置（40），其中所述导轨架（30）包括与所述座位架（10）固定连接的沿沙发（1）前后方向延伸的导轨（300），一支承架（50）的第一端与所述靠背架（20）连接，该支承架（50）的第二端与所述导轨（300）以可相对滑动的方式连接，所述驱动装置（40）设置成与所述支承架（50）联动连接以引导所述支承架（50）的第二端相对于所述导轨（300）的滑动。

Description

靠背位置可调节的沙发
技术领域
本发明涉及一种坐具， 更具体地涉及一种沙发， 特别地是一种靠背位 置可调节的沙发。 背景技术
由于每个人的体形不同并且每个人习惯的角度不同， 所喜欢或适合的 沙发的座深（即靠背相对于沙发前沿的距离）也不同。 传统沙发的座深是 不可调整的。 对于座深不可调的沙发， 体形过大或过小的人在就坐或倚躺 时会有明显的不舒适感。
目前市场上也逐渐出现有座深可调的沙发， 但是这些沙发的座深通常 是通过卡槽接合等方式按预先设置的位置来调节靠背的位置。 这类沙发所 能实现的座深调节范围有限， 并且往往由于沙发靠背形状的庞大， 对于普 通用户而言在调节靠背位置时感到很吃力，此外， 由于反复的拆卸或连接， 导致这类沙发的使用寿命缩短。
因此， 本发明旨在克服上述问题中的一个或多个。 发明内容
本发明的目的是提供一种能够简单方便地连续调节座深并且结构简 单、 使用寿命长的沙发。
上述目的通过具有如下技术特征来实现：一种靠背位置可调节的沙发， 包括座位架、 靠背架、导轨架以及驱动装置， 其中所述导轨架包括与所述 座位架固定连接的沿沙发前后方向延伸的导轨， 一支承架的第一端与所述 靠背架连接， 该支承架的第二端与所述导轨以可相对滑动的方式连接， 所 述驱动装置设置成与所述支承架联动连接以引导所述支承架的第二端相对 于所述导轨的滑动。 根据本发明的沙发可通过导轨对支承架的引导实现对 靠背架位置的连续调节。
有利地， 所述驱动装置为电动马达。 电动马达的控制相对简单易行， 因此， 使得靠背位置的调节对于一般用户而言可操作性更强。
有利地， 所述导轨架包括与所述座位架固定连接的前部横梁和后部横 梁， 所述导轨两端分别固定连接在前部横梁和后部横梁上。 通过将导轨架 与座位架固定连接，有利于在靠背架移动的过程中对靠背架的支承， 因此， 使得沙发经久耐用。
有利地，所述支承架的所述第二端设置有轮子，所述导轨设置有凹槽， 所述轮子可滚动地设置在相应的凹槽内。 轮子与凹槽的配合为滚动配合， 摩擦小， 对于驱动装置而言在移动靠背位置的过程中所受到的阻力小， 使 得用户可以轻松地、 甚至无需费力地就可完成对靠背位置的调节。
有利地， 所述支承架的所述第二端设置有连接板， 在连接板的相对两 侧各设置有轮子， 所述导轨具有平行延伸的一对导轨元件， 各导轨元件沿 其纵向延伸方向设置有用于接纳相应轮子的凹槽。 由于存在成对的导轨元 件， 支承架所受到的来自于靠背架的力被分摊在成对的导轨元件上， 使得 导轨元件的所受到的应力减小， 因此， 可以延长沙发的使用寿命。
有利地， 所述连接板定位在所述一对导轨元件之间的间隙中。 通过此 构型， 在座位架内有限的空间内安装支承架和导轨架， 可以使得整体结构 更为紧凑。
有利地， 在一有利实施例中， 所述驱动装置设有传动装置， 该传动装 置将动力传递到所述支承架的所述第二端。 所述传动装置安装在所述一对 导轨元件之间的间隙中。 该构型也具有 4吏得整体结构更为紧凑的优点。
有利地， 所述支承架的第一端设置有安装板， 该安装板上设置有用于 与所述靠背架可拆卸连接的安装孔。 通过支承架与靠背架的可拆卸连接， 可以根据需要灵活地改变沙发的整个构型， 例如沙发的部分部段需要有靠 背， 而另外一些部段则不需要靠背的存在， 此外使得也可以拆卸靠背架以 适应清洗或更换等需求。 有利地，所述沙发包括多个导轨以及数目与导轨的数量相应的靠背架。 这样使得可以灵活地设计沙发靠背的整体外形， 使得沙发靠背的灵活多变 成为可能。
有利地， 各靠背架的位置通过同一驱动装置同步调节或通过不同的驱 动装置单独调节。 该构型使得可以更进一步提高沙发的设计灵活性以满足 人们在舒适性方面更高的多样化需求。
根据本发明的沙发可以简单轻松地连续调节靠背位置， 并且可以实现 靠背位置的任意调节以实现不同的座深。 此外， 根据本发明的沙发结构简 单、 紧凑， 所需零部件少并且部件之间的摩擦减小， 因而改善了沙发的耐 用性， 增大了沙发的使用寿命。 附图说明
从下面参照附图对本发明实施例的说明中可更清楚地看到本发明的上 述和其它特征及优点， 在附图中：
图 1示出根据本发明的一实施例的沙发的主体框架结构示意图； 图 2示出处于第一座深位置的沙发的支承架和导轨架的示意图， 其中 为了清 ¾¾见未示出导轨架的前部横梁 ^部横梁；
图 3示出处于第二座深位置的沙发的支承架和导轨架的示意图； 以及 图 4示出沿图 3中的 A-A线得到的截面示意图。 具体实施方式
参见图 1， 根据本发明的一实施例， 靠背位置可调节的沙发 1包括座 位架 10、 靠背架 20、 导轨架 30以及驱动装置 40。 座位架 10为构成用于 支承沙发坐面结构的主体框架。 坐面是沙发受力的主要部位。 通常沙发的 坐面结构主要有橡筋绷带、 木平板、 蛇型钢簧等类型。 目前市场上沙发多 以中密度纤维板为坐面结构的底部， 上面分层铺垫中密度海绵和喷胶棉以 提高舒适感。 图 1中示出的坐面结构为蛇型钢簧结构 101。 靠背架 20用于 在人就坐于沙发上时支承其背部。 因此，靠背架 20设置在沿沙发的前后方 向离座位架 10的前沿有一定距离的位置，以预留出一定的就坐空间。因此， 用于调节靠背架位置的导轨架 30通常设置在座位架 10的大致后半部区域， 如图 1所示。导轨架 30包括用于引导靠背架 20移动的导轨 300。导轨 300 沿沙发的前后方向延伸。 在所示实施例中， 导轨架 30还包括与座位架 10 固定连接的前部横梁 301和后部横梁 302， 导轨 300的两端分别固定连接 在前部横梁 301和后部横梁 302上。
本文中所提到的 "前" 和 "后" 是相对于沙发水平放置好后准备待用 时的静止状态而言的， 在通常意义上， 当人就坐于沙发上时， 靠近人腿部 的一边缘为沙发的前沿， 靠近人背部的边缘为沙发的后沿。 沿沙发的前后 方向沙发前沿和后沿之间的距离为沙发的深度， 在沙发的前后方向沙发前 沿与靠背之间的距离为沙发的座深。 沙发的宽度方向为垂直于沙发的前后 方向并与水平平面平行的方向。
本文中所定义的 "沙发" 是从广义上理解的所有具有与座椅相当功能 的坐具或椅具， 甚至也可以包括具有靠背或边框的床。 本文中所述的 "靠 背" 也不应理解成仅限于沙发的用于支承人体背部的框架， 而是也可以理 解成用于限制沙发的坐面宽度或深度的边界框架，例如沙发的左右扶手等。
从图 1中可以看出，靠背架 20与导轨架 30通过支承架 50连接。靠背 架 20为单独的框架结构， 其通过螺栓等紧固件与支承架 50的第一端可拆 卸地连接。 图中所示的支承架 50为一截面为矩形的带有弯折部的杆件。本 领域技术人员可以想到，支承架 50可以设计成任意的截面形状以及任意的 轮廓形状。在图示的具体实施例中，支承架 50的第一端设置有安装板 501， 靠背架 20相应地设置有沿沙发宽度方向延伸的安装件 201„安装板 501上 的安装孔与安装件 201上的安装孔对齐， 通过将螺栓等紧固件穿过对齐的 安装孔来实现靠背架 20与支承架 50之间的固定连接。而支承架 50的第二 端则与导轨架 30中的导轨 300活动配合连接。在图 2和 3所示的实施例中， 支承架 50相对于导轨 300所在的平面倾斜地设置。 具体参见图 2和 3，导轨 300具有平行延伸的一对导轨元件 300a,300b, 支承架 50的第二端定位在该对导轨元件之间的间隙中， 并且支承架 50的 第二端与位于其两侧的导轨元件 300a，300b以可相对滑动的方式活动连接。 在图示的具体实施例中， 支承架 50的第二端设置有横截面为倒 U形的连 接板 502, 在该倒 U形连接板 502的两腿部的外侧固定连接有向外突出的 轮子 5020,轮子 5020伸入形成在导轨元件 300a，300b上的沿导轨纵向延伸 的凹槽 301a，301b内。 轮子 5020可在相应的凹槽内滚动。 有利地， 凹槽的 开口宽度比轮子的直径小， 因此， 使得在轮子的行程范围内， 轮子被限制 在凹槽内而不会脱离与凹槽的^^。通过导轨 300的引导，支承架 50的第 二端可以沿着导轨的延伸方向来回移动，即与支承架 50固定连接的靠背架 20可以沿着沙发的前后方向移动， 从而可以得到不同的沙发座深。
参见图 4， 在由倒 U形连接板 502所限定的凹形空间内设置有与其固 定连接的滑块 503。驱动装置 40例如电动马达通过传动装置例如推杆带动 滑块 503沿着导轨的延伸方向滑动， 由此带动与滑块 503固定连接的连接 板 502以及因此带动支承架 50和靠背架 20沿沙发的前后方向移动， 从而 使得可以连续地调节沙发座深。 在图示的实施例中， 传动装置例如推杆安 装在成对的导轨元件之间的间隙中， 从而使得可以充分利用有限的安装空 间。
在驱动装置为电动马达的实施例中， 通过电动马达的控制开关实现电 机的正向 /反向旋转， 从而实现滑块的前进 /后退。 并且当电机停止转动时， 滑块的位置被锁定， 由此， 靠背架 20的位置也被锁定， 因而避免了靠背架 在受到人体背部施加的后推力时的滑移。 由于电动马达的控制相对简单， 仅仅需要几个控制按钮以及相应的控制线路就可实现， 因此， 在操作性方 面相比于传统的手动调节方式具有显著的优势。 并且由于导轨的连续性， 靠背架在其允许行程范围内移位不会受到任何阻力， 因此其具有较强的连 续调节性。 此外， 电动马达的安装所需空间很小， 本领域技术人员可以从 设计结构紧凑的角度将电动马达安装在座位架的下部区域， 或将电动马达 安装到导轨架上。此外， 也可将传动装置安装在导轨架上。从外观上来看， 由于最终成型的沙发在座位架上覆盖有填充垫， 电动马达以及导轨架的安 装并不会影响沙发的美观。 虽然图中驱动装置示出为电动马达， 但是本领 域技术人员可以想到采用任何可以将电能或机械能等形式的能量转化成机 械动力输出的装置例如液压驱动装置来替代电动马达。
虽然图中示出支承架的第二端与导轨的 合是通过轮子在凹槽中的滚 动来实现的，但是， 本领域技术人员很容易想到， 支承架 50的第二端与导 轨 300的配合也可以通过设计成伸入到凹槽中的突块与导轨凹槽内表面的 滑动配合来实现。 此外， 本领域技术人员很容易想到， 倒 U形连接板也可 以设计成具有足够大的跨度以使得可以横跨成对的导轨元件， 并且在倒 U 形连接板的腿部侧朝内设置有突块并且该突块与分别设置在成对的导轨元 件上的彼此朝相反方向开口的凹槽配合。 在另一可选实施例中， 倒 U形连 与该凹槽配合的突条或滚珠。 因此， 支承架的第二端和导轨的配合结构包 括但不限于所示的轮子-凹槽的结构， 而是可以具体实施为任何具有互补 / 互锁形状的、 可相对滑动以实现引导功能的配合结构。
虽然图中所示的沙发具有两个靠背架 20以及相应的支承架和导轨,但 是本领域技术人员可以想到， 靠背架的数目并不限于所示的个数， 例如， 可以设置一个或设置三个、 四个或更多个靠背架。 相应地， 导轨数目以及 支承架的数目可以随之改变。 这些靠背架的位置可以通过同一驱动装置同 步调节或通过不同的驱动装置分别单独地调节， 以满足多种个性化需求。
本领域技术人员可以想到， 当座深调节到足够宽的位置， 沙发则可以 具有躺卧的功能， 而不再仅仅具有就坐的功能， 此时， 靠背位置的调节的 意义在于调节沙发深度以适应不同的躺卧需求。
当然， 本发明所公开的用于调节靠背位置的结构也可以应用于调节沙 发的左右扶手位置、 调节椅子的靠背位置、 调节床的床头拒位置等场合。 各种坐具， 包括沙发、 椅子、 床等都可受益于所公开的用于调节靠背位置 的结构的应用。
以上所述仅为本发明的优选实施例， 并不用于限制本发明， 对本领域 的技术人员而言， 可以在不偏离本发明的范围的情况下对本发明的装置做 出多种改良和变型。 本领域的技术人员通过考虑本说明书中公开的内容也 可得到其它实施例。 本说明书和示例仅应被视为示例性的， 本发明的真实 范围由所附权利要求以及等同方案限定。 附图标记列表
1 沙发
10座位架
20靠背架
201安装件
30导轨架
300导轨
300a,300b导轨元件
301a,301b凹槽
301前部横梁
302后部横梁
40驱动装置
101蛇型钢簧结构
50支承架
501 ^
502连接板
5020轮子
503滑块

Claims

&禾
1.一种靠背位置可调节的沙发， 包括座位架、 靠背架、 导轨架以及驱 动装置， 其中所述导轨架包括与所述座位架固定连接的沿沙发前后方向延 伸的导轨， 一支承架的第一端与所述靠背架连接， 该支承架的第二端与所 述导轨以可相对滑动的方式连接， 所述驱动装置设置成与所述支承架联动 连接以引导所述支承架的第二端相对于所述导轨的滑动。
2.根据权利要求 1所述的沙发， 其特征在于， 所述驱动装置为电动马 达。
3.根据权利要求 1所述的沙发， 其特征在于， 所述导轨架包括与所述 座位架固定连接的前部横梁和后部横梁， 所述导轨的两端分别固定连接在 前部横梁和后部横梁上。
4.根据权利要求 1-3之一所述的沙发， 其特征在于， 所述支承架的所 述第二端设置有轮子， 所述导轨设置有凹槽， 所述轮子可滚动地设置在相 应的凹槽内。
5.根据权利要求 4所述的沙发， 其特征在于， 所述支承架的所述第二 端设置有连接板， 在该连接板的相对两侧各设置有轮子， 所述导轨具有平 行延伸的一对导轨元件， 各导轨元件沿其纵向延伸方向设置有用于接纳相 应轮子的凹槽。
6.根据权利要求 5所述的沙发， 其特征在于， 所述连接板定位在所述 一对导轨元件之间的间隙中。
7.根据权利要求 6所述的沙发， 其特征在于， 所述驱动装置设有传动 装置， 该传动装置将动力传递到所述支承架的所述第二端， 所述传动装置 安装在所述一对导轨元件之间的间隙中。
8.根据权利要求 1所述的沙发， 其特征在于， 所述支承架的第一端设 置有安装板， 该安装板上设置有用于与所述靠背架可拆卸连接的安装孔。
9.根据权利要求 1-3之一所述的沙发，其特征在于，所述沙发包括多个 导轨以及数目与导轨的数量相应的靠背架。
10.根据权利要求 9所述的沙发， 其特征在于， 各靠背架的位置通过 同一驱动装置同步调节或通过不同的驱动装置单独调节。
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