WO2017027988A1 - 一种用于可折叠床的正翻转机构 - Google Patents

一种用于可折叠床的正翻转机构 Download PDF

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Publication number
WO2017027988A1
WO2017027988A1 PCT/CN2015/000713 CN2015000713W WO2017027988A1 WO 2017027988 A1 WO2017027988 A1 WO 2017027988A1 CN 2015000713 W CN2015000713 W CN 2015000713W WO 2017027988 A1 WO2017027988 A1 WO 2017027988A1
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Prior art keywords
bed
mounting
turning mechanism
metal channel
parallel
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PCT/CN2015/000713
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English (en)
French (fr)
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林永忠
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林永忠
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Application filed by 林永忠 filed Critical 林永忠
Publication of WO2017027988A1 publication Critical patent/WO2017027988A1/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
    • A47C17/00—Sofas; Couches; Beds
    • 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
    • A47C19/00—Bedsteads
    • A47C19/12—Folding bedsteads

Definitions

  • the present invention relates to the field of furniture, and more particularly to a forward turning mechanism for a foldable bed.
  • the present invention provides a positive turning mechanism for a foldable bed, which has a large pushing and supporting power, and the user can simply push the bed board to complete the folding of the bed board. And put down, and the size is small, the space occupied is similar to the volume of the bed.
  • the technical solution of the present invention to solve the technical problem is to design a forward turning mechanism for a foldable bed, including a bed board mounting frame, a vertical frame and a rotating module;
  • the vertical frame is a frame with left and right sides
  • the structure, the bed board mounting frame and the rotating module are two sets, respectively installed on the inner side of the left and right sides of the vertical frame, and the bed board mounting frame is mounted on the rotating module;
  • the left and right sides of the vertical frame are symmetric on the inner side
  • the inner groove channel is configured to install the rotating module; and the rotating module comprises a metal channel, a supporting module, a sliding module, a gas bracing and a limiting block;
  • the metal channel is fixed on the vertical frame by a screw of
  • the inner groove is formed on the inner side of the left and right sides;
  • the metal channel is a polygonal structure having two vertically opposite sides parallel, wherein the shorter vertical side is located on the outer side, and the two vertical parallel sides a parallel rail disposed at an upper
  • the support module comprises a main rotating arm, a guiding wheel, a bearing seat, a bearing, a torsion bushing, a bed mounting bushing and a mounting plate;
  • the mounting plate is installed at a position of an outer edge of a lower vertical side of the metal channel, and is used
  • the screw is fixed on the vertical frame;
  • the bearing seat is fixed on the mounting plate by screws, and the bearing passes through the bearing seat, the torsion bushing, the bed plate mounting sleeve and is fixed on the mounting plate;
  • the main rotating arm is fixed at one end On the bearing seat, the other end is mounted with a guiding wheel, the guiding wheel is slidably connected with the lower bottom surface of the sliding module;
  • the torsion bushing and the bed mounting bushing are all "T" type structures, and the torsion bushing is sleeved on the bearing The lower end is inserted into the inner part of the bearing seat, the bed mounting sleeve is located outside the torsion bushing and is
  • the sliding module comprises an integrated board, two triangular pulley blocks, and a linear slide block.
  • the two triangular pulley blocks are identical, and a pulley block is mounted on a right angle side, and the two triangular pulley blocks are opposite to each other with a pulley block.
  • the right angle side is fixed to the integrated board by screws on the left and right sides; the two triangular pulley blocks are matched with the parallel guide rails on the metal channel; the right side of the integrated board is convex on the right side, and the triangular pulley block moves to the highest When the point is up, the convex portion is just against the limiting block; the gas supporting fixed end is installed at the top position of the metal channel, and the movable end is installed at the left side of the end surface of the integrated board; the lower end surface of the integrated board is A bevel is mounted on the inclined surface in parallel, and the guide wheel is matched with the linear slide at the lower end of the integrated board.
  • the invention has the beneficial effects of:
  • the design of the support module, the sliding module and the air support makes the gravity of the bed plate completely canceled under the action of the positive turning mechanism, and the folding bed can stand firmly at any position regardless of the position of being folded or lowered. It is not only convenient to use, but also can load the bed board to be put down or put down under the load of very small force. On the other hand, the force balance design at any position ensures the safety of use.
  • the overall design of the positive reversing mechanism of the invention is small, and the size of the space occupied by the vertical frame and the volume of the bed plate Recently, the bed board can be completely accommodated inside the stand.
  • the operation of the positive inversion mechanism of the present invention relies only on its own structural design, and does not require other additional power, energy saving and environmental protection.
  • FIG. 1 is an assembled view of a folded state positive inversion mechanism of a bed panel of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Fig. 2 is an assembled view of a bed-flat-flat-state turning mechanism of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 3 is a structural view of a metal channel of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • FIG. 4 is a front elevational view of a sliding module of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 5 is a side elevational view of a sliding module of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 6 is a connection diagram of a guide wheel and a linear slide of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 7 is a structural view of a main rotor of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 8 is a structural view of a bearing housing of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 9 is a structural view of a bearing housing of an embodiment of a forward turning mechanism for a foldable bed of the present invention.
  • Figure 10 is a schematic view showing the assembly of the support module of an embodiment of the forward reversing mechanism for a foldable bed of the present invention.
  • Figure 11 is a schematic view showing the force analysis of the main components of an embodiment of the forward turning mechanism for a foldable bed of the present invention.
  • the invention relates to a positive turning mechanism for a foldable bed (referred to as a positive turning mechanism, see FIG. 1-11),
  • the utility model comprises a bed board mounting frame 1, a vertical frame 2 and a rotating module 3;
  • the vertical frame 2 is a frame structure with left and right sides, and the bed board mounting frame 1 and the rotating module 3 are two sets, respectively installed on the vertical frame 2
  • the bed mounting frame 1 is mounted on the rotating module 3;
  • the inner side of the left and right sides of the vertical frame 2 has a symmetrical inner groove track for mounting the rotating module 3;
  • the rotating module 3 includes a metal channel 31, a supporting module 32, a sliding module 33, a gas stay 34 and a limiting block 35;
  • the metal channel 31 is fixed to the left and right sides of the vertical frame 2 by screws.
  • the metal channel 31 is a polygonal structure having two vertically opposite sides parallel, wherein the shorter vertical side is located on the outer side, and the inner side edge position on the two vertical parallel sides
  • a parallel rail 311 is provided, the length of which does not exceed the length of the shorter vertical side, and the limiting block 35 is mounted above the parallel rail 311 on the metal channel 31.
  • the support module 32 includes a main rotating arm 321 , a guiding wheel 322 , a bearing seat 323 , a bearing 324 , a torsion bushing 325 , a bed mounting bushing 326 and a mounting plate 327 ;
  • the mounting plate 327 is mounted on the metal channel 31
  • the position of the outer edge of the lower end of the vertical side is fixed to the stand 2 by screws;
  • the bearing block 323 is fixed to the mounting plate 327 by screws, and the bearing 324 passes through the bearing seat 323, the torsion bushing 325, and the bed plate in sequence.
  • a sleeve 326 one end of the main rotating arm 321 is fixed on the bearing seat 323, and the other end is mounted with a guiding wheel 322, the guiding wheel 322 is slidably connected with the lower bottom surface of the sliding module 33; the torsion sleeve 325, the bed plate
  • the mounting sleeve 326 is of a "T" type structure, the torsion sleeve 325 is sleeved on the bearing 324 and the lower end is inserted into the bearing seat 323, and the bed mounting sleeve 326 is located outside the torsion sleeve 325 and is sleeved on the bearing 324;
  • the surface of the bearing 324 is threaded, and the inside of the bed mounting bushing 326 is threaded, and the two threads are snap-fitted together.
  • the sliding module 33 includes an integrated board 331 , two triangular pulley blocks 332 , and a linear slide 333 .
  • the two triangular pulley blocks 332 are identical.
  • One right angle side is mounted with a pulley block, and two triangular pulley blocks 332 are inclined.
  • the opposite sides of the right angle side with the pulley block are fixed to the integrated board 331 by screws; the two triangular pulley blocks 332 are matched with the parallel rails 311 on the metal channel 31; the upper end surface of the integrated board 331
  • the right side is convex.
  • the triangular pulley block 332 When the triangular pulley block 332 is moved to the highest point, the convex portion is just against the limiting block 35; the fixed end of the gas bracing 34 is installed in the metal groove
  • the top end of the track 31 has a movable end mounted on the left side of the upper end surface of the integrated board 331; the lower end surface of the integrated board 331 is a sloped surface, and the linear slide 333 is mounted in parallel on the inclined surface, and the guide wheel 322 and the lower end of the integrated board 331 The linear slides 333 match.
  • the bed board mounting frame 1 is an "L" type hollow columnar structure with a plurality of mounting holes, and the long side of the "L” type is fixed on the bed board mounting sleeve 326.
  • the short side of the bed board is on the same side and two sides. It is sandwiched between the two "L"-type angles of the two deck mounting brackets, and the shorter end of the "L” type is located on the short side of the deck.
  • the gas stays 34 are three, and three of them are installed in parallel between the top of the metal channel 31 and the integrated board 331.
  • the three gas braces 34 are installed in parallel, so that the force of the gas bracing loaded on the sliding module 33 is relatively stable, and the offset is less likely to occur during the turning process, thereby enhancing the operational stability of the entire mechanism.
  • the number of pulleys on the pulley block of the triangular pulley block 332 is at least two, and is evenly distributed on the same right angle side of the triangular pulley block 332; the pulley on the triangular pulley block 332 and the guide wheel 322 are both concave in the middle.
  • the guiding rails of the parallel rail 311 and the linear slide 333 are all outwardly convex smooth cylindrical structures, the pulleys on the triangular pulley block 332 are matched with the guiding rails of the parallel rails 311, and the guiding wheels 322 are linearly sliding.
  • the guide rails of the track 333 are matched.
  • the torsion bushing 325 is prepared from a non-rigid material. Since the bearing plate and the components on the bearing plate are subjected to a large force during the turning process, if all the rigid components are connected, the component is easily damaged. The torsion bushing 325 acts to cushion the torsional force, enhancing structural stability and fatigue resistance.
  • the positive inversion mechanism of the present invention is also provided with a cover (not shown) matching the metal channel 31 during use to prevent dust and debris from entering the inside of the metal channel and affecting the stability of the forward turning mechanism.
  • the positive inversion mechanism of the invention pushes the folding bed to fold and lay down:
  • the right end of the main arm 321 obtains an upward force to push the bed plate upward; during this process, the downward force of the air brace 34 is transmitted to the main arm 321 via the sliding module 33, due to the sliding module 33 and the main
  • the dynamic connection of the rotating arm 321 causes the force obtained by the bed mounting bushing 326 to constantly change.
  • the integrated plate 331 moves downward, the upward force of the bed mounting bushing 326 is continuously increased and fixed on the bed mounting bushing 326.
  • the bed plate thus receives an increasing upward driving force; with the center of gravity of the bed plate as the fulcrum, the upward driving force of the bed plate and the work done by the torque to the fulcrum maintain a dynamic balance with the gravity potential of the bed plate itself, therefore, it is only necessary to give the bed board a very With a small external upward thrust, the bed can move up and the bed can be still in the current position when the external thrust is removed. With a small boosting force, the bed can be pushed upright, and the bed is completely stored inside the stand. The downward pressure released by the air brace 34 is transmitted to the bed and the force is decomposed to the horizontal level.
  • the vertical force is an upward component and a rightward horizontal component in the direction of the frame.
  • the upward component, the horizontal component in the direction of the frame, and the downward gravity of the bed itself make the bed stable. Folded inside the stand 2 .
  • the disintegration force is an upward support force and a horizontal component, so that the bed can be kept horizontal and can withstand a certain amount of gravity.
  • the finite block 35 above the integrated board 331 prevents the bed from overturning.
  • Fig. 11 The basic force analysis of the main components of the working process of the inverting device of the present invention is shown in Fig. 11.
  • the point O is the center of the bearing
  • the point A is the center of gravity of the bed
  • the point B is the point of force exerted on the main arm 31 by the air brace 22, C
  • the point is the fixed point at the upper end of the gas support 22.
  • G is the bed gravity
  • F is the force exerted by the air brace 22 on the main arm 31
  • F 1 is the component of F in the vertical direction.
  • L 1 is the AO length and L 2 is the OB length.
  • ⁇ is the angle between the bed plate and the horizontal direction
  • ⁇ is the angle between the main arm 31 and the horizontal direction
  • ⁇ is the angle between the F and the vertical direction.
  • the bed can be balanced.
  • the support module 32, the sliding module 33 and the gas bracing 34 of the forward inversion mechanism of the present invention have been subjected to rigorous calculation and multiple verifications, the number of the air braces 34 and the magnitude of the compressive force, the component structure and rigidity of the support module 32,
  • the flexibility, as well as the slope of the side pulleys of the sliding module 33 and the slope of the lower linear slide 333, are designed in consideration of the effect that the combined forces of the three components are loaded on the bed, and the weight of the bed is light.
  • the supporting module 32, the sliding module 33 and the gas bracing 34 of the positive turning mechanism matched with the heavy and heavy difference bed plates need to be adjusted in position, the number of the air braces 34 and the compression force, but the structure of the positive turning mechanism is structurally designed. Basically no change.
  • the design of the supporting module 32, the sliding module 33 and the air bracing 34 makes the gravity of the bed plate completely canceled under the action of the positive turning mechanism, and the folding bed can be firmly established at any position where it is put up or down. The point is not only convenient to use, but also the loading force can be put up or down by loading a small force. On the other hand, the force balance design at any position ensures the safety of use.
  • the forward turning mechanism of the present invention is only used for the folding bed in the present application.
  • the positive turning mechanism of the present invention can be used in many occasions requiring a turning action, depending on the occasion.
  • the weight can be adjusted.

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  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

一种用于可折叠床的正翻转机构，包括床板安装架（1）、立架（2）、转动模块（3）；立架（2）为带有左、右两侧面的框架结构，床板安装架（1）和转动模块（3）均为两套，分别安装在立架（2）的左、右两侧面内侧上，床板安装架（1）安装在转动模块（3）上；立架（2）的左、右两侧面内侧上有对称的内凹槽道，用于安装转动模块（3）；转动模块（3）包括金属槽道（31）、支撑模块（32）、滑动模块（33）、气撑（34）和限位块（35）。支撑模块（32）、滑动模块（33）和气撑（34）三者的设计，使得床板的重力在正翻转机构的作用下，完全被抵消，折叠床无论处于收起或放下的任何位置，都可以稳固的立于该点，不仅使用便捷，加载极小的力即可使床板收起或放下，另一方面，任何位置点的受力平衡设计，保证了使用的安全性。

Description

一种用于可折叠床的正翻转机构 技术领域
本发明涉及家具领域，具体是一种用于可折叠床的正翻转机构。
背景技术
现有的折叠床中，大多为多节收拢折叠的结构，这种结构打开、收拢比较麻烦，而且再次使用的时候，得重新整理床铺，很费事。整体翻转折叠床虽然市面上也有，但是真正能满足使用要求的比较少，原因在于，一方面，床板本身重量较重，整体翻转就需要与床板重量差不多的推动力来使其翻转，力量较小的人群折叠就非常吃力，而且放下也需要支撑力，也容易发生危险；另一个方面，需要把一个具有较大重量的床板竖直固定在一个地方，也是需要解决的技术难题。折叠床的设计，本身是为了节省空间，若需要加载较多的外在推动力和支撑力、并设置较大、较多的稳固座来解决翻转折叠床的使用问题，这是没有意义的。因此，设计一款体积小巧、具有较大推动及支撑助力的正翻转机构是本行业急需要解决的技术难题。
发明内容
为了克服现有技术的不足，本发明提出一种用于可折叠床的正翻转机构，该正翻转机构具有较大推动及支撑助力，使用者只需轻推床板，即可实现床板的收起和放下，且体积小巧，所占空间与床板体积相近。
本发明解决所述技术问题的技术方案是：设计一种用于可折叠床的正翻转机构，包括床板安装架、立架、转动模块；所述立架为带有左、右两侧面的框架结构，床板安装架和转动模块均为两套，分别安装在立架的左、右两侧面内侧上，床板安装架安装在转动模块上；所述立架的左、右两侧面内侧上有对称的内凹槽道，用于安装转动模块；其特征在于，所述转动模块包括金属槽道、支撑模块、滑动模块、气撑和限位块；所述金属槽道用螺丝钉固定在立架上的 左、右两侧面内侧上的内凹槽道内；所述金属槽道为具有两个竖直相对边平行的多边形结构，其中，较短的竖直边位于外侧，在两个竖直的平行边上内侧边缘位置上设有平行导轨，其长度不超过较短的竖直边长度，所述限位块安装在平行导轨的上方、金属槽道上；
所述支撑模块包括主转臂、导向轮、轴承座、轴承、扭转轴套、床板安装轴套和安装板；所述安装板安装在金属槽道较短的竖直边下端外侧边缘位置，并用螺钉固定在立架上；所述轴承座用螺钉固定在安装板上，所述轴承依次穿过轴承座、扭转轴套、床板安装轴套并固定在安装板上；所述主转臂一端固定在轴承座上，另一端安装有导向轮，所述导向轮与滑动模块的下底面滑动连接；；所述扭转轴套、床板安装轴套均为“T”型结构，扭转轴套套在轴承上且下端插入轴承座内部，床板安装轴套位于扭转轴套的外侧且套在轴承上；所述轴承表面有螺纹，床板安装轴套内侧带有螺纹，两者螺纹咬合紧固在一起；
所述滑动模块包括一个集成板、两个三角形滑轮块、一个直线滑道，所述两个三角形滑轮块相同，一个直角边上安装有滑轮组，两个三角形滑轮块以斜边相对、带有滑轮组的直角边朝左右两侧的方式用螺丝固定在集成板上；两个三角形滑轮块与金属槽道上的平行导轨相匹配；所述集成板上端面右侧凸起，当三角形滑轮块运动到最高点时，该凸起部分刚好与限位块顶住；所述气撑固定端安装在金属槽道的顶部位置，其活动端安装在集成板上端面左侧位置；所述集成板下端面为一个斜面，直线滑道平行安装在该斜面上，导向轮与集成板下端的直线滑道相匹配。
本发明与现有技术相比，其有益效果在于：
1.支撑模块、滑动模块和气撑三者的设计，使得床板的重力在正翻转机构的作用下，完全被抵消，折叠床无论处于收起或放下的任何位置，都可以稳固的立于该点，不仅使用便捷，加载极小的力即可使床板收起或放下，另一方，任何位置点的受力平衡设计，保证了使用的安全性。
2.本发明正翻转机构整体设计小巧，立架所占空间的大小与床板的体积相 近，床板可完全收纳于立架内部。
3.本发明正翻转机构的运作只依赖本身的结构设计，并不需要其它额外动力，节能环保。
附图说明
图1为本发明用于可折叠床的正翻转机构一种实施例的床板折叠状态正翻转机构装配图。
图2为本发明用于可折叠床的正翻转机构一种实施例的床板放平状态正翻转机构装配图。
图3为本发明用于可折叠床的正翻转机构一种实施例的金属槽道结构图。
图4为本发明用于可折叠床的正翻转机构一种实施例的滑动模块正视图。
图5为本发明用于可折叠床的正翻转机构一种实施例的滑动模块侧视图。
图6为本发明用于可折叠床的正翻转机构一种实施例的导向轮与直线滑道连接图。
图7为本发明用于可折叠床的正翻转机构一种实施例的主转臂结构图。
图8为本发明用于可折叠床的正翻转机构一种实施例的轴承座结构图。
图9为本发明用于可折叠床的正翻转机构一种实施例的轴承座结构图。
图10为本发明用于可折叠床的正翻转机构一种实施例的支撑模块装配示意图。
图11为本发明用于可折叠床的正翻转机构一种实施例的主要部件受力分析示意图。
具体实施方式
以下将结合附图对本发明做进一步的说明，但不应以此来限制本发明的保护范围。
为了方便说明和理解本发明的技术方案，以下所涉及的方位名词，如上下、左右，均以附图所显示的方位为准。
本发明一种用于可折叠床的正翻转机构(简称正翻转机构，参见图1-11)， 包括床板安装架1、立架2、转动模块3；所述立架2为带有左、右两侧面的框架结构，床板安装架1和转动模块3均为两套，分别安装在立架2的左、右两侧面内侧上，床板安装架1安装在转动模块3上；所述立架2的左、右两侧面内侧上有对称的内凹槽道，用于安装转动模块3；其特征在于，所述转动模块3包括金属槽道31、支撑模块32、滑动模块33、气撑34和限位块35；所述金属槽道31用螺丝钉固定在立架2上的左、右两侧面内侧上的内凹槽道内；所述金属槽道31为具有两个竖直相对边平行的多边形结构，其中，较短的竖直边位于外侧，在两个竖直的平行边上内侧边缘位置上设有平行导轨311，其长度不超过较短的竖直边长度，所述限位块35安装在平行导轨311的上方、金属槽道31上。
所述支撑模块32包括主转臂321、导向轮322、轴承座323、轴承324、扭转轴套325、床板安装轴套326和安装板327；所述安装板327安装在金属槽道31较短的竖直边下端外侧边缘位置，并用螺钉固定在立架2上；所述轴承座323用螺钉固定在安装板327上，所述轴承324依次穿过轴承座323、扭转轴套325、床板安装轴套326；所述主转臂321一端固定在轴承座323上，另一端安装有导向轮322，所述导向轮322与滑动模块33的下底面滑动连接；；所述扭转轴套325、床板安装轴套326均为“T”型结构，扭转轴套325套在轴承324上且下端插入轴承座323内部，床板安装轴套326位于扭转轴套325的外侧且套在轴承324上；所述轴承324表面有螺纹，床板安装轴套326内侧带有螺纹，两者螺纹咬合紧固在一起。
所述滑动模块33包括一个集成板331、两个三角形滑轮块332、一个直线滑道333，所述两个三角形滑轮块332相同，一个直角边上安装有滑轮组，两个三角形滑轮块332以斜边相对、带有滑轮组的直角边朝左右两侧的方式用螺丝固定在集成板331上；两个三角形滑轮块332与金属槽道31上的平行导轨311相匹配；所述集成板331上端面右侧凸起，当三角形滑轮块332运动到最高点时，该凸起部分刚好与限位块35顶住；所述气撑34固定端安装在金属槽 道31的顶部位置，其活动端安装在集成板331上端面左侧位置；所述集成板331下端面为一个斜面，直线滑道333平行安装在该斜面上，导向轮322与集成板331下端的直线滑道333相匹配。
所述床板安装架1为“L”型、上有若干安装孔的空心柱状结构，其“L”型的长边固定在床板安装轴套326上，使用时，床板的短边同侧两角夹在两个床板安装架1“L”型夹角内部，且“L”型较短的一端均位于床板的短边上。
所述气撑34为3个，3者平行安装在金属槽道31的顶部与集成板331之间。三个气撑34平行安装，使得气撑加载在滑动模块33上的力比较稳定，翻转过程中不易发生偏移，增强了整个机构的运作稳定性。
所述三角形滑轮块332的滑轮组上滑轮的个数至少为2个，均匀分布在三角形滑轮块332的同一直角边上；所述三角形滑轮块332上的滑轮与导向轮322均为中间内凹的结构，所述平行导轨311和直线滑道333的导向轨道均为向外凸出的光滑圆柱体结构，三角形滑轮块332上的滑轮与平行导轨311的导向轨道相配合，导向轮322与直线滑道333的导向轨道相配合。
所述扭转轴套325为非刚性材料制备而成，由于床板在翻转的过程中，轴承324及其上的部件之间承受较大的力，若全是刚性部件连接，则容易造成部件损坏，扭转轴套325起到缓冲扭转力的作用，增强了结构的稳定性和抗疲劳度。
本发明正翻转机构，在使用时，还配有与金属槽道31相匹配的盒盖(图未示)，防止灰尘、杂物进入金属槽道内部，影响正翻转机构的稳定性。
本发明正翻转机构推动折叠床折叠与放下过程：
(1)从水平到折叠状态：用手轻托起床板(极小的力即可)，此时气撑34释放向下的压力，推动集成板331向下运动，集成板331带动两个三角形滑轮块向下滑动，同时，集成板331下端的直线滑道333推动主转臂321向下运动并在偏离先前的平衡状态时，主转臂321上的滑轮在直线滑道333滑行，集成板331向下运动，主转臂321的右端向下运动；主转臂321的左端向下运动 的同时，主转臂321的右端得到一个向上的力，推动床板向上运动；在此过程中，气撑34向下的作用力经滑动模块33传递到主转臂321，由于滑动模块33和主转臂321的动态连接，使得床板安装轴套326得到的力不断变化，集成板331向下运动时，床板安装轴套326得到的向上作用力不断增大，固定在床板安装轴套326上的床板因此得到不断增大的向上推动力；以床板的重心为支点，床板得到的向上推动力与其到支点的力矩所做的功与床板自身的重力势能保持动态平衡，因此，只要给予床板一个很小的外加向上助推力，床板即可向上运动，且在撤去外加助推力时，床板也能静止在当前位置。用一个很小的助推力即可将床板推到竖直立起的状态，此时床板完全收纳在立架内部，气撑34释放的向下压力传递到床板上的作用力分解到水平与竖直方向的力分别是一个向上的分力和向右的、朝向立架方向的水平分力，向上的分力、朝向立架方向的水平分力和床板自身向下的重力使得床板稳固的折叠在立架2内部。
(2)从折叠状态放水平：用手向下轻按床板，床板重心上的力发生改变，床板位置向下的偏移使得床板安装轴套326得到一个向上的推力，该推力使得主转臂321向上运动，进而推动集成板331向上运动，气撑34的作用力逐渐变小；在该过程中，床板自身向下的重力为主要动力，由于主转臂321和滑动模块33的调节作用，床板的重心位置上的受力处于动态平衡状态，因此，只要给予床板一个很小的向下压力即可使床板向下运动，当床板完全放平时，气撑34传递到床板上的作用力的分解力为一个向上的支撑力和水平方向的分力，使得床板能够保持水平并且能够承受一定重力。此外，当床板完全放平时，集成板331上方有限位块35，防止床板翻转过度。
本发明翻转装置工作过程主要部件基本受力分析见图11，图中，O点为轴承中心，A点为床板重心，B点为气撑22作用在主转臂31上的受力点，C点为气撑22上端固定点。G为床板重力，F为气撑22作用在主转臂31上的力，F1为F在竖直方向上的分力。L1为AO长度，L2为OB长度。α为床板与水平方向的夹角，θ为主转臂31与水平方向的夹角，β为F与竖直方向的夹角。
床板的力矩
Figure PCTCN2015000713-appb-000001
主转臂力矩M2＝F1L2cosθ＝Fcosβ·L2cosθ，当M1＝M2时，即
Figure PCTCN2015000713-appb-000002
床板即可达到平衡状态。
本发明正翻转机构的支撑模块32、滑动模块33和气撑34在设计上经过了严密的计算和多次的验证，气撑34的数量及压缩力的大小，支撑模块32的部件结构及刚性、柔性，以及滑动模块33的两侧滑轮和下侧直线滑道333的坡度，都是考虑了这三个部件所构成系统的综合作用力加载在床板上的效果而设计的，床板的重量有轻有重，重量差异较大的床板所匹配的正翻转机构的支撑模块32、滑动模块33和气撑34在位置、气撑34的数量和压缩力大小上需要调整，但是正翻转机构在结构设计上基本没有变化。支撑模块32、滑动模块33和气撑34三者的设计，使得床板的重力在正翻转机构的作用下，完全被抵消，折叠床无论处于收起或放下的任何位置，都可以稳固的立于该点，不仅使用便捷，加载极小的力即可使床板收起或放下，另一方，任何位置点的受力平衡设计，保证了使用的安全性。
本发明正翻转机构在本申请中仅仅只是用于折叠床上，但是，根据正翻转机构的基本特点和本申请的介绍可知，本发明的正翻转机构可用于很多需要翻转动作的场合，不同场合根据承重大小进行调整即可。
根据上述说明书的揭示和教导，本发明所属领域的技术人员还可以对上述实施方式进行变更和修改。因此，本发明并不局限于上面揭示和描述的具体实施方式，对本发明的一些修改和变更也应当落入本发明的权利要求的保护范围内。此外，尽管本说明书中使用了一些特定的术语，但这些术语只是为了方便说明，并不对本发明构成任何限制。
本发明未述及之处适用于现有技术。

Claims (7)

  1. 一种用于可折叠床的正翻转机构，包括床板安装架、立架、转动模块；所述立架为带有左、右两侧面的框架结构，床板安装架和转动模块均为两套，分别安装在立架的左、右两侧面内侧上，床板安装架安装在转动模块上；所述立架的左、右两侧面内侧上有对称的内凹槽道，用于安装转动模块；其特征在于，所述转动模块包括金属槽道、支撑模块、滑动模块、气撑和限位块；所述金属槽道用螺丝钉固定在立架上的左、右两侧面内侧上的内凹槽道内；所述金属槽道为具有两个竖直相对边平行的多边形结构，其中，较短的竖直边位于外侧，在两个竖直的平行边上内侧边缘位置上设有平行导轨，其长度不超过较短的竖直边长度，所述限位块安装在平行导轨的上方、金属槽道上；
    所述支撑模块包括主转臂、导向轮、轴承座、轴承、扭转轴套、床板安装轴套和安装板；所述安装板安装在金属槽道较短的竖直边下端外侧边缘位置，并用螺钉固定在立架上；所述轴承座用螺钉固定在安装板上，所述轴承依次穿过轴承座、扭转轴套、床板安装轴；所述主转臂一端固定在轴承座上，另一端安装有导向轮，所述导向轮与滑动模块的下底面滑动连接；；所述扭转轴套、床板安装轴套均为“T”型结构，扭转轴套套在轴承上且下端插入轴承座内部，床板安装轴套位于扭转轴套的外侧且套在轴承上；所述轴承表面有螺纹，床板安装轴套内侧带有螺纹，两者螺纹咬合紧固在一起；
    所述滑动模块包括一个集成板、两个三角形滑轮块、一个直线滑道，所述两个三角形滑轮块相同，一个直角边上安装有滑轮组，两个三角形滑轮块以斜边相对、带有滑轮组的直角边朝左右两侧的方式用螺丝固定在集成板上；两个三角形滑轮块与金属槽道上的平行导轨相匹配；所述集成板上端面右侧凸起，当三角形滑轮块运动到最高点时，该凸起部分刚好与限位块顶住；所述气撑固定端安装在金属槽道的顶部位置，其活动端安装在集成板上端面左侧位置；所述集成板下端面为一个斜面，直线滑道平行安装在该斜面上，导向轮与集成板下端的直线滑道相匹配。
  2. 根据权利要求1所述的用于可折叠床的正翻转机构，其特征在于，所 述气撑为三个，三者平行安装在金属槽道的顶部与集成板之间。
  3. 根据权利要求1所述的用于可折叠床的正翻转机构，其特征在于，所述床板安装架为“L”型、上有若干安装孔的空心柱状结构，其“L”型的长边固定在床板安装轴套上，使用时，床板的短边同侧两角夹在两个床板安装架“L”型夹角内部，且“L”型较短的一端均位于床板的短边上。
  4. 根据权利要求1所述的用于可折叠床的正翻转机构，其特征在于，所述扭转轴套为非刚性材料制备而成。
  5. 根据权利要求1所述的用于可折叠床的正翻转机构，其特征在于，所述三角形滑轮块的滑轮组上滑轮的个数至少为2个，均匀分布在三角形滑轮块的同一直角边上。
  6. 根据权利要求1、5任一项所述的用于可折叠床的正翻转机构，其特征在于，所述三角形滑轮块上的滑轮为中间内凹的结构，所述平行导轨的导向轨道为向外凸出的光滑圆柱体结构，三角形滑轮块上的滑轮与平行导轨的导向轨道相配合。
  7. 根据权利要求1所述的用于可折叠床的正翻转机构，其特征在于，所述导向轮为中间内凹的结构，所述直线滑道的导向轨道为向外凸出的光滑圆柱体结构，导向轮与直线滑道的导向轨道相配合。
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