WO2023179671A1 - 折叠椅 - Google Patents

折叠椅 Download PDF

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Publication number
WO2023179671A1
WO2023179671A1 PCT/CN2023/083087 CN2023083087W WO2023179671A1 WO 2023179671 A1 WO2023179671 A1 WO 2023179671A1 CN 2023083087 W CN2023083087 W CN 2023083087W WO 2023179671 A1 WO2023179671 A1 WO 2023179671A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer tube
legs
folding chair
inner tube
seat plate
Prior art date
Application number
PCT/CN2023/083087
Other languages
English (en)
French (fr)
Inventor
冷鹭浩
Original Assignee
厦门新技术集成有限公司
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 厦门新技术集成有限公司 filed Critical 厦门新技术集成有限公司
Publication of WO2023179671A1 publication Critical patent/WO2023179671A1/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
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • 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
    • A47C7/002—Chair or stool bases
    • 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
    • A47C7/02—Seat parts
    • 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back

Definitions

  • the invention relates to a folding chair.
  • Folding chairs can be opened and folded at will.
  • the basic structure is roughly the same, that is, the front legs and rear legs are hinged in a herringbone shape, and the front legs and rear legs jointly support the seat cushion.
  • a giving-away structure is indispensable.
  • a chute is provided between the seat cushion and the front legs and/or rear legs, and the chute provides the opening and closing of the folding chair.
  • the degree of freedom required during the coupling process is another type of yielding structure is to design the rear legs as telescopic legs, which can provide the degree of freedom required in the opening and closing process by extending and contracting the length.
  • the first chute method of giving way structure in addition to setting the chute on the seat cushion, the front and rear legs also need to be equipped with sliding support parts corresponding to the chute, and the structure is relatively complicated.
  • the second telescopic leg method allows the structure to simplify the connection between the seat cushion and the front and rear legs, and also makes the folding chair lighter.
  • it requires an additional positioning component on the telescopic leg so that after the folding chair is opened in place, Limit the telescoping legs so that the folding chair can be supported stably.
  • Most of the positioning components use a stop sleeve structure, and some also use an elastic stop pin structure.
  • the structure of the positioning component is not very complicated, it is troublesome to assemble, and there are gaps where the positioning component blocks the telescopic legs, which can easily pinch your fingers. That is to say, if your fingers are caught on the upper end of the telescopic legs and the folding chair is opened, the positioning component will be It will pinch your fingers, and it is easy to pinch your fingers when pressing the elastic stopper.
  • the invention provides a folding chair with a simple structure and safer opening and closing operations.
  • the technical solutions adopted by the present invention to solve the technical problems are:
  • a folding chair includes a seat panel and a herringbone support structure symmetrically arranged on the left and right sides of the seat panel.
  • the seat panel is pivotally connected to the herringbone support structure.
  • the herringbone support structure includes front legs and rear legs.
  • the rear legs are telescopic.
  • the rear legs include an outer tube and an inner tube that is telescopically inserted into the outer tube.
  • the top of the inner tube extends from the upper end of the outer tube and is directly or directly connected to the upper part of the front leg.
  • the outer tube is provided with a limiting structure inside, and the inner tube gradually extends into the outer tube until the lower end of the inner tube is limited by the limit when the folding chair is opened.
  • the inner tube is exposed between the upper end of the inner tube and the upper end of the outer tube to prevent fingers from being caught between the upper end of the inner tube and the upper end of the outer tube.
  • the extended section of the upper end of the outer tube that is pinched.
  • a limit structure is set in the middle or middle and lower parts.
  • the hidden limit structure can avoid pinching due to direct contact with fingers.
  • the upper part of the inner tube still exists.
  • the exposed extension section does not need to be supported by the upper end of the outer tube, so that the upper ends of the inner tube and the outer tube will not pinch fingers. It is safe to operate and fully meets the technical requirements for preventing children from pinching their hands.
  • the limiting structure is used to limit the maximum extent of the downward movement of the inner tube. It can be a step, a closed surface, or a beam opening, etc., which has the advantage of being simple in structure.
  • the length of the extension section is at least greater than the thickness of the finger, or is substantially the same as the thickness of the finger.
  • the position of the middle or middle lower part of the outer tube is configured to form a constriction of the limiting structure.
  • the shrinkage is directly used on the outer tube to block the downward movement of the inner tube. There is no need to add additional parts and the structure is simple.
  • a rear leg connecting rod is provided between the rear legs on the left and right sides of the seat plate, and the end of the rear leg connecting rod is inserted into the rear leg.
  • the part of the rod inserted into the rear legs forms the limiting structure.
  • the part of the rear leg link inserted into the rear leg forms a limiting structure, which also eliminates the need for additional parts and also improves the strength and stability of the rear leg link.
  • the part of the rear leg connecting rod inserted into the rear leg has a flat structure.
  • Flat openings corresponding to the flat ends of the outer tube can better ensure the strength of the outer tube.
  • the front leg is provided with a pivot sleeve, the rear side of the pivot sleeve extends backward to form a pivot portion, and the upper end of the inner tube is movably hinged with the pivot portion;
  • the pivot joint extends backward from the rear side of the pivot sleeve to create a distance between the upper end of the inner tube and the front legs.
  • the convex portion tilts backward from the rear side of the foot cap and will also move forward in the folded state. There is a distance between the lower end of the legs and the rear legs, so whether in use or in the folded closed state, there is no hand pinching between the front legs and the rear legs.
  • the upper end of the inner tube is a flat joint, and a corresponding slot is provided in the middle of the pivot joint.
  • a pivot shaft is provided between the inner side of the front leg and the seat side, the middle part of the side of the seat plate is rotationally connected to the pivot shaft, and the front leg is connected to the side of the seat plate.
  • the spaces between the sides allow fingers to move in and out freely
  • a connecting piece is provided between the rear legs and the side of the seat plate, and the rear part of the side of the seat plate is rotationally connected to the connecting piece.
  • the space between it and the side of the seat plate allows fingers to move in and out freely.
  • the pivot shaft opens the distance between the seat plate and the front legs, and the connecting piece opens the distance between the seat plate and the rear legs.
  • the connecting piece is in the shape of ⁇ .
  • the connecting piece adopts a ⁇ shape, which can make the front and rear legs of the folding chair close together after folding, minimizing the occupied thickness in the folded state.
  • a front leg connecting rod between the two front legs, and the upper ends of the two front legs are connected together by a cross bar. It also includes a backrest plate, and the backrest plate is connected to the upper ends of the two front legs and the cross bar.
  • the backrest board and seat board are both blister boards.
  • Figure 1 illustrates a three-dimensional schematic diagram of a folding chair.
  • Figure 2 illustrates a partial perspective cross-sectional view of the folding chair.
  • FIG. 3 shows an enlarged schematic diagram of the circle position in FIG. 2 .
  • FIG. 4 is a schematic cross-sectional view from a top view of the folding chair shown in FIG. 1 after being folded.
  • FIG. 5 illustrates an exploded view of the folding chair shown in FIG. 1 .
  • FIG. 6 illustrates a side view of the folding chair shown in FIG. 1 .
  • FIG. 7 illustrates a side view of the folding chair shown in FIG. 1 during the folding process.
  • Figure 8 illustrates a perspective view of the folding process of the folding chair shown in Figure 1 (corresponding to Figure 7).
  • FIG. 9 illustrates a side view of the folding chair shown in FIG. 1 after being folded.
  • the folding chair includes a seat panel 10 and a herringbone support structure symmetrically arranged on the left and right sides of the seat panel.
  • the herringbone support structure is used to support the seat panel 10.
  • the seat plate 10 is pivotally connected to the herringbone support structure.
  • the herringbone support structure includes front legs 20 and rear legs 30.
  • the rear legs 30 are telescopic, that is, the length can be changed.
  • the rear legs 30 include an outer tube 31 and an inner tube 32 that is telescopically inserted into the outer tube.
  • the top end of the inner tube 32 extends from the upper end of the outer tube 31 and is directly connected to the upper part of the front leg 20 . Or indirectly rotated and hinged together.
  • the outer tube 31 is provided with a limiting structure 33 inside.
  • the inner tube 32 When the folding chair is opened, the inner tube 32 gradually extends into the outer tube 31 until the lower end of the inner tube is blocked by the limiting structure 33. That is, the rear legs 30 are folded in the folding chair It is in an extended state when folded and in a contracted state when the folding chair is opened.
  • the inner tube 32 blocks the lower end of the inner tube 31 with the limiting structure 33, that is, when the folding chair is opened, an extension section of the inner tube 32 is exposed between its upper end and the upper end of the outer tube 31. 322.
  • the extension section 322 is used to prevent fingers from being pinched by the upper end of the inner tube and the upper end of the outer tube.
  • the inner tube 32 will gradually extend into the outer tube 31 when the folding chair is opened, and finally the lower end of the inner tube will be blocked by the limiting structure. 33 blocks, at this time, the extension section 322 of the inner tube is still exposed to the outside.
  • the distance between the upper end of the inner tube and the upper end of the outer tube becomes smaller and smaller during the opening process of the folding chair, due to the existence of the extension section 322, Fingers will not be pinched by the upper end of the inner tube and the upper end of the outer tube.
  • the length of the extension section 322 is at least greater than the thickness of the finger, or is substantially the same as the thickness of the finger. It is basically the same thickness as the finger, and can be slightly smaller than the thickness of the finger.
  • the finger is slightly squeezed by the upper end of the inner tube and the upper end of the outer tube, human muscles have elasticity, and slight deformation will not cause pinching.
  • a rear leg link 34 is provided between the rear legs 30 on the left and right sides of the seat plate, and the end of the rear leg link 34 is inserted into the outer tube 31 of the rear leg 30.
  • the portion of the rear leg connecting rod 34 inserted into the rear leg outer tube 31 forms the limiting structure 33 . Therefore, the inner tube 32 retracts into the outer tube 31 to the maximum extent when the lower end of the inner tube resists the limiting structure 33. At this time, the folding chair just completes the beating action.
  • the part of the rear leg link 34 inserted into the outer tube of the rear leg has a flat structure.
  • the entire rear leg link 34 can be in the shape of a round tube, as long as the diameter of the rear leg link 34 is smaller than the diameter of the outer tube 31 .
  • the shrinking method is directly used to form a step surface or a bottleneck structure in the outer tube 31, which can also be used to block the inner tube, or the inner cavity of the outer tube has a structure such as a stepped hole.
  • the front leg 20 is provided with a pivot sleeve 40, the rear side of the pivot sleeve 40 extends backward to form a pivot portion 42, and the upper end of the inner tube 32 is movably hinged with the pivot portion 42;
  • the lower end of the front leg 20 is covered with a foot cap 50, and the rear side of the foot cap is tilted backward to form a convex portion 52.
  • the convex portion 52 of the foot cap resists the outer tube of the rear leg 30, and the top end of the rear leg is separated from the front leg through the pivot portion 42, so that there is space between the front leg 20 and the rear leg 30. Fingers move in and out freely.
  • the upper end of the inner tube 32 is a flat joint, and a corresponding slot is provided in the middle of the pivot portion 42 .
  • a pivot shaft 22 is provided between the inner side of the front leg 20 and the seat side 10 , and the middle side of the seat plate 10 is rotationally connected to the pivot shaft 22 .
  • the front leg 20 is connected to the seat plate 10 .
  • the sides of the seat plate 10 can allow fingers to move in and out freely;
  • a connector 36 is provided between the rear legs 30 and the sides of the seat plate 10, and the rear portion of the side of the seat plate 10 is connected to the connector.
  • the joint 36 is rotatably connected, and the space between the rear leg 30 and the side of the seat plate 10 allows fingers to move in and out freely.
  • the connecting member 34 is in the shape of ⁇ .
  • a front leg connecting rod 24 is provided between the two front legs 20, and the upper ends of the two front legs are connected together by a cross bar 26. It also includes a backrest plate 60, which is connected to the upper ends of the two front legs and the cross bar.
  • the backrest board and seat board are both blister boards.
  • the front end of the seat panel 10 When folded, the front end of the seat panel 10 is lifted upward, as shown in Figure 6-9.
  • the seat panel 10 rotates clockwise around the pivot axis 22, driving the front legs 20 and the rear legs 30 to come closer. Due to the pivot between the connecting piece 36 and the seat panel 10, The contact point continues to lower, so the rear leg is extended during the folding process, and finally the convex portion 52 of the foot cap 50 and the rear leg 30 are close together.
  • the exposed length of the inner tube 32 When the folding chair is in the open state, the exposed length of the inner tube 32 is the least, and in the folded state, the exposed length of the inner tube 32 is the largest. Therefore, if the folding chair is opened from the folded state, the exposed part of the inner tube 32 will be reduced until The inner tube is locked with the limiting structure, and the exposed portion of the inner tube finally reaches at least the extension section.
  • the invention discloses a folding chair, which includes a seat plate, front legs and rear legs.
  • the rear legs are telescopic.
  • the rear legs include an outer tube and an inner tube that is flexibly plugged into the outer tube.
  • the top end of the tube extends from the upper end of the outer tube and is directly or indirectly rotatably hinged with the upper part of the front leg.
  • a limiting structure is provided inside the outer tube, and the inner tube gradually extends during the opening process of the folding chair. Enter the outer tube until the lower end of the inner tube is blocked by the limiting structure. When the limiting structure blocks the lower end of the inner tube, the inner tube is between the upper end of the inner tube and the upper end of the outer tube.
  • An extension section is exposed therebetween for preventing fingers from being pinched by the upper end of the inner tube and the upper end of the outer tube.
  • the hidden limit structure can prevent fingers from being pinched due to direct contact.

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  • Special Chairs (AREA)

Abstract

一种折叠椅，包括座板（10）、前腿（20）和后腿（30），后腿（30）可伸缩，后腿（30）包括外管（31）及活动伸缩插接于外管（31）的内管（32），内管（32）的顶端从外管（31）上端伸出并与前腿（20）上部直接或间接转动铰接在一起，外管（31）内部设有限位结构（33），内管（32）在折叠椅打开的过程中逐渐伸入外管（31）直到内管（32）的下端被限位结构（33）所阻挡，内管（32）在限位结构（33）阻挡住内管（32）下端时，在内管（32）上端与外管（31）上端之间露出用于避免手指被内管上端和外管上端夹伤的延伸段（322）。隐藏式的限位结构可以避免手指直接触碰而夹伤，同时，在折叠椅完全打开之后，内管上端和外管上端也不会夹伤手指，操作安全。

Description

折叠椅 技术领域
本发明涉及一种折叠椅。
背景技术
折叠椅可任意打开和叠合，虽然款式多样，但是基本结构大致上相同，即前腿和后腿呈人字形转动铰接，前腿和后腿共同支撑座垫。其中，为了保证折叠椅能够正常开合，让位结构是必不可少的，有一种让位结构是在座垫与前腿和/或后腿之间设置滑槽，由滑槽提供折叠椅开合过程中需要的让位自由度。另一种让位结构是将后腿设计为伸缩腿，通过长度伸缩来提供开合过程中需要的让位自由度。第一种滑槽方式的让位结构，除了在要座垫上设置滑槽，前后腿也要对应滑槽设置滑动支撑部件，结构比较复杂。
第二种伸缩腿方式的让位结构，可以简化座垫与前后腿连接位置的结构，也使折叠椅更轻便，但是需要在伸缩腿上另外再增加一个定位部件，以便在折叠椅打开到位之后限制住伸缩腿，这样折叠椅才能实现稳定支撑。定位部件大多数是用挡套结构，也有采用弹性挡销结构。虽然定位部件的结构并不是很复杂，但是组装麻烦，而且定位部件阻挡伸缩腿的位置存在缝隙，容易夹伤手指，也就是说，如果手指抓在伸缩腿上端，打开折叠椅时，定位部件就会夹伤手指，手指按压弹性挡销也容易夹伤手指。
发明内容
本发明提供了一种折叠椅，结构简单并且开合操作更安全。本发明解决其技术问题所采用的技术方案是：
折叠椅，包括座板和对称设置在座板左右两侧的人字形支撑结构，所述座板与所述人字形支撑结构转动枢接，所述人字形支撑结构包括前腿和后腿，所述后腿可伸缩，所述后腿包括外管及活动伸缩插接于所述外管的内管，所述内管的顶端从所述外管的上端伸出并与所述前腿上部直接或间接转动铰接在一起，所述外管内部设有限位结构，所述内管在折叠椅打开的过程中逐渐伸入所述外管直到所述内管的下端被所述限 位结构所阻挡，所述内管在所述限位结构阻挡住所述内管下端时在所述内管上端与所述外管上端之间露出用于避免手指被所述内管上端和所述外管上端夹伤的延伸段。
外管内部，在其中部或者中下部的位置设置限位结构，隐藏式的限位结构可以避免手指直接触碰发生夹伤的情况发生，同时，在折叠椅完全打开之后，内管上部仍然存在露出在外的延伸段，不需要在外管的上端抵靠支承，这样内管上端和外管上端也不会夹伤手指，操作安全，完全满足儿童防夹手的技术要求。另外，限位结构用于限定内管下行的最大程度，可以是一个台阶，或者是一个封闭面，或者是束口等结构，具有结构简单的优点。
一较佳实施例之中：所述延伸段的长度至少大于手指的厚度，或者是与手指的厚度基本相同。
一较佳实施例之中：所述外管中部或者中下部的位置设置用于形成所述限位结构的缩口。外管上直接采用缩口来阻挡内管下行，无需另外增加零部件，结构简单。
一较佳实施例之中：所述座板左右两侧的后腿之间设有后腿连杆，所述后腿连杆的端部插进所述后腿之中，所述后腿连杆插进所述后腿之中的部分形成所述限位结构。后腿连杆插进后腿之中的部分形成限位结构，同样无需另外增加零部件，而且还提升了后腿连杆的强度和稳定性。
一较佳实施例之中：所述后腿连杆插进所述后腿之中的部分是扁状的结构。外管上对应扁状的端部设置扁状的开孔，可以更好地保证外管的强度。
一较佳实施例之中：所述前腿上设有枢接套，所述枢接套的后侧向后延伸形成枢接部，所述内管上端与所述枢接部活动铰接；所述前腿下端套有脚帽，所述脚帽后侧朝后翘起形成凸部；折叠后，所述脚帽的凸部顶住所述后腿，前腿和后腿之间可供手指自由进出。枢接部由枢接套的后侧向后延伸，从而在内管上端与前腿之间拉开距离，另外，凸部由脚帽后侧朝后翘起，在折叠状态下也会在前腿下端和后腿之间拉开距离，因此，不管在使用还是在折叠关态，前腿和后腿之间都不存在夹手的情况。
一较佳实施例之中：所述内管上端是扁状接头，所述枢接部中部对应设置插槽。
一较佳实施例之中：所述前腿内侧与所述座侧之间设有枢接轴，所述座板侧边中部与所述枢接轴转动连接，所述前腿与座板侧边之间可供手指自由进出；所述后腿与所述座板侧边之间设有连接件，所述座板侧边后部与所述连接件转动连接，所述后腿 与座板侧边之间可供手指自由进出。枢接轴在座板与前腿之间拉开距离，连接件在座板与后腿之间拉开距离，使用时，即便儿童手指放在座板侧边，也不会夹手。
一较佳实施例之中：所述连件件呈︿形状。连件件采用︿形状，可以使折叠椅收折之后前后腿靠在一起，尽量减小收折状态下的占用厚度。
一较佳实施例之中：两前腿之间设有前腿连杆，两前腿上端由横杆连在一起，还包括靠背板，所述靠背板与两前腿上端及横杆连接，所述靠背板和座板均是吸塑板。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1绘示了折叠椅的立体示意图。
图2绘示了折叠椅的局部立体剖面示意图。
图3绘示了图2当中圆圈位置的放大示意图。
图4绘示了图1所示折叠椅收折后的俯视角度的剖面示意图。
图5绘示了图1所示折叠椅的分解示意图。
图6绘示了图1所示折叠椅的侧视图。
图7绘示了图1所示折叠椅收折过程的侧视图。
图8绘示了图1所示折叠椅收折过程的立体图(对应图7)。
图9绘示了图1所示折叠椅收折后的侧视图。
具体实施方式
请参照图1至图9，折叠椅，包括座板10和对称设置在座板左右两侧的人字形支撑结构，人字形支撑结构用于支撑座板10。所述座板10与所述人字形支撑结构转动枢接，所述人字形支撑结构包括前腿20和后腿30，所述后腿30可伸缩，也就是长度可以变化。所述后腿30包括外管31及活动伸缩插接于所述外管的内管32，所述内管32的顶端从所述外管31的上端伸出并与所述前腿20上部直接或间接转动铰接在一起。所述外管31内部设有限位结构33，所述内管32在折叠椅打开的过程中逐渐伸入所述外管31直到所述内管的下端被所述限位结构33所阻挡，也就是，后腿30在折叠椅收 折时处于伸长状态，在折叠椅打开时处于收缩状态。所述内管32在所述限位结构33阻挡住所述内管31下端时，也就是折叠椅打开时，所述内管32在其上端与所述外管31上端之间露出一节延伸段322，所述延伸段322用于避免手指被所述内管上端和所述外管上端夹伤。也就是如果折叠椅在收折状态要被打开的时候，即便手指握在延伸段32位置上，折叠椅打开时内管32逐渐伸入外管31，最后内管的下端被所述限位结构33所阻挡，此时内管的延伸段322还是露在外面，虽然内管上端和所述外管上端的距离在折叠椅打开过程中是越来越小的，但是因为延伸段322的存在，手指不会被内管上端和所述外管上端夹伤。
优选地，所述延伸段322的长度至少大于手指的厚度，或者是与手指的厚度基本相同。与手指的厚度基本相同，可以是略小于手指的厚度，虽然手指被内管上端和外管上端稍微挤压，但是人体肌肉存在弹性，稍微的变形并不会出现夹伤。
优选地，所述座板左右两侧的后腿30之间设有后腿连杆34，所述后腿连杆34的端部插进所述后腿30的外管31之中，所述后腿连杆34插进所述后腿外管31之中的部分形成所述限位结构33。因此，内管32缩入外管31的最大程度就是内管下端顶住限位结构33，此时折叠椅刚好完成打打动作。
优选地，所述后腿连杆34插进所述后腿外管之中的部分是扁状的结构。可以理解地，后腿连杆34整体都是圆管的形状也可以，只要后腿连杆34的管径小于外管31管径即可。可以理解地，直接采用缩口的方式在外管31内形成台阶面或瓶颈结构，也可以用于阻挡内管，或者外管内腔是阶梯孔等结构。
优选地，所述前腿20上设有枢接套40，所述枢接套40的后侧向后延伸形成枢接部42，所述内管32上端与所述枢接部42活动铰接；所述前腿20下端套有脚帽50，所述脚帽后侧朝后翘起形成凸部52。折叠后，所述脚帽的凸部52顶住所述后腿30的外管，后腿顶端又通过枢接部42与前腿拉开距离，因此前腿20和后腿30之间可供手指自由进出。
优选地，所述内管32上端是扁状接头，所述枢接部42中部对应设置插槽。
优选地，所述前腿20内侧与所述座侧10之间设有枢接轴22，所述座板10侧边中部与所述枢接轴22转动连接，所述前腿20与座板10侧边之间可供手指自由进出；所述后腿30与所述座板10侧边之间设有连接件36，所述座板10侧边后部与所述连 接件36转动连接，所述后腿30与座板10侧边之间可供手指自由进出。
优选地，所述连件件34呈︿形状。
优选地，两前腿20之间设有前腿连杆24，两前腿上端由横杆26连在一起，还包括靠背板60，所述靠背板与两前腿上端及横杆连接，所述靠背板和座板均是吸塑板。
折叠时，座板10前端向上抬，如图6-9，座板10以枢接轴22为中心顺时针转动，带动前腿20和后腿30靠拢，由于连接件36与座板10的枢接点不断下降，因此收折过程后腿伸长，最后脚帽50的凸部52与后腿30靠在一起。在折叠椅打开状态，内管32外露的长度最少，而在收折状态，内管32外露的长度的长度最大，因此如果从收折状态开始打开折叠椅，则内管32外露部分一直减少直到内管与限位结构卡位，内管外露部分最终达到最少形成所述延伸段。
以上所述，仅为本发明较佳实施例而已，故不能依此限定本发明实施的范围，即依本发明专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明涵盖的范围内。
工业实用性
本发明公开了一种折叠椅，包括座板、前腿和后腿，所述后腿可伸缩，所述后腿包括外管及活动伸缩插接于所述外管的内管，所述内管的顶端从所述外管的上端伸出并与所述前腿上部直接或间接转动铰接在一起，所述外管内部设有限位结构，所述内管在折叠椅打开的过程中逐渐伸入所述外管直到所述内管的下端被所述限位结构所阻挡，所述内管在所述限位结构阻挡住所述内管下端时在所述内管上端与所述外管上端之间露出用于避免手指被所述内管上端和所述外管上端夹伤的延伸段。隐藏式的限位结构可以避免手指直接触碰发生夹伤的情况发生，同时，在折叠椅完全打开之后，内管上部仍然存在露出在外的延伸段，这样内管上端和外管上端也不会夹伤手指，操作安全,具有工业实用性。

Claims (16)

  1. 折叠椅，包括座板和对称设置在座板左右两侧的人字形支撑结构，所述座板与所述人字形支撑结构转动枢接，所述人字形支撑结构包括前腿和后腿，所述后腿可伸缩，所述后腿包括外管及活动伸缩插接于所述外管的内管，所述内管的顶端从所述外管的上端伸出并与所述前腿上部直接或间接转动铰接在一起，其特征在于：所述外管内部设有限位结构，所述内管在折叠椅打开的过程中逐渐伸入所述外管直到所述内管的下端被所述限位结构所阻挡，所述内管在所述限位结构阻挡住所述内管下端时在所述内管上端与所述外管上端之间露出用于避免手指被所述内管上端和所述外管上端夹伤的延伸段。
  2. 根据权利要求1所述的折叠椅，其特征在于：所述延伸段的长度至少大于手指的厚度，或者是与手指的厚度基本相同。
  3. 根据权利要求1所述的折叠椅，其特征在于：所述外管中部或者中下部的位置设置用于形成所述限位结构的缩口。
  4. 根据权利要求1所述的折叠椅，其特征在于：所述座板左右两侧的后腿之间设有后腿连杆，所述后腿连杆的端部插进所述后腿之中，所述后腿连杆插进所述后腿之中的部分形成所述限位结构。
  5. 根据权利要求4所述的折叠椅，其特征在于：所述后腿连杆插进所述后腿之中的部分是扁状的结构。
  6. 根据权利要求1至5中任一项所述的折叠椅，其特征在于：所述前腿上设有枢接套，所述枢接套的后侧向后延伸形成枢接部，所述内管上端与所述枢接部活动铰接；所述前腿下端套有脚帽，所述脚帽后侧朝后翘起形成凸部；折叠后，所述脚帽的凸部顶住所述后腿，前腿和后腿之间可供手指自由进出。
  7. 根据权利要求6所述的折叠椅，其特征在于：所述内管上端是扁状接头，所述枢接部中部对应设置插槽。
  8. 根据权利要求6所述的折叠椅，其特征在于：所述前腿内侧与所述座侧之间设有枢接轴，所述座板侧边中部与所述枢接轴转动连接，所述前腿与座板侧边之间可供手指自由进出；所述后腿与所述座板侧边之间设有连接件，所述座板侧边后部与所述连接件转动连接，所述后腿与座板侧边之间可供手指自由进出。
  9. 根据权利要求8所述的折叠椅，其特征在于：所述连件件呈︿形状。
  10. 根据权利要求8所述的折叠椅，其特征在于：两前腿之间设有前腿连杆，两前腿上端由横杆连在一起，还包括靠背板，所述靠背板与两前腿上端及横杆连接，所述靠背板和座板均是吸塑板。
  11. 一种折叠椅，包括座板和对称设置在座板两侧的支撑架，所述座板与所述支撑架枢接，所述支撑架包括前腿和后腿，所述后腿包括外管及活动伸缩插接于所述外管的内管，所述内管的顶端从所述外管的上端伸出并与所述前腿上部直接或间接转动铰接，其特征在于：所述外管内部设有限位结构，所述内管在折叠椅打开状态伸入到所述外管的下端被所述限位结构所阻挡，所述内管上端与所述外管上端之间露出用于避免手指被所述外管上端夹伤的延伸段。
  12. 根据权利要求11所述的折叠椅，其特征在于：所述延伸段的长度至少大于手指的厚度，或者是与手指的厚度基本相同。
  13. 根据权利要求11所述的折叠椅，其特征在于：所述外管中部或者中下部的位置设置用于形成所述限位结构的缩口。
  14. 根据权利要求11所述的折叠椅，其特征在于：所述座板左右两侧的后腿之间设有后腿连杆，所述后腿连杆的端部插进所述后腿外管，所述后腿连杆插进所述后腿外管的部分形成所述限位结构。
  15. 根据权利要求11所述的折叠椅，其特征在于：所述前腿上设有枢接套，所述枢接套的后侧向后延伸形成枢接部，所述内管上端与所述枢接部活动铰接；所述前腿下端套有脚帽，所述脚帽朝向后腿方向翘起形成凸部；折叠后，所述脚帽的凸部顶住所述后腿，所述前后腿的另一端被枢接套分开，所述前腿和后腿之间可供手指自由进出。
  16. 根据权利要求11或15所述的折叠椅，其特征在于：所述前腿内侧与所述座侧之间设有枢接轴，所述座板侧边中部与所述枢接轴转动连接，所述前腿与座板侧边之间可供手指自由进出；所述后腿与所述座板侧边之间设有连接件，所述座板侧边后部与所述连接件转动连接，所述后腿与座板侧边之间可供手指自由进出。
PCT/CN2023/083087 2022-03-24 2023-03-22 折叠椅 WO2023179671A1 (zh)

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