WO2025237296A1 - 活动椅架和折叠椅 - Google Patents

活动椅架和折叠椅

Info

Publication number
WO2025237296A1
WO2025237296A1 PCT/CN2025/094608 CN2025094608W WO2025237296A1 WO 2025237296 A1 WO2025237296 A1 WO 2025237296A1 CN 2025094608 W CN2025094608 W CN 2025094608W WO 2025237296 A1 WO2025237296 A1 WO 2025237296A1
Authority
WO
WIPO (PCT)
Prior art keywords
hinge
rod
leg
connector
chair frame
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2025/094608
Other languages
English (en)
French (fr)
Inventor
杨宝庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Hengfeng Top Leisure Co Ltd
Original Assignee
Zhejiang Hengfeng Top Leisure Co Ltd
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 Zhejiang Hengfeng Top Leisure Co Ltd filed Critical Zhejiang Hengfeng Top Leisure Co Ltd
Publication of WO2025237296A1 publication Critical patent/WO2025237296A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Definitions

  • This disclosure relates to the field of folding chair technology, specifically to a movable chair frame and a folding chair.
  • chairs are essential everyday furniture, used for rest and reclining, preventing fatigue from prolonged lying or standing and reducing energy consumption from standing for extended periods. Therefore, they are widely used in various training institutions, schools, public places, hospitals, restaurants, hotels, companies, homes, and other locations.
  • Chairs come in various structural designs, among which folding chairs are a special type. They are not only easy to carry and transport, but can also be folded up when not in use to reduce space occupation. Folding chairs typically have a combination of tubular components and fabric, and the fabric seat evenly distributes the load when the user sits, ensuring comfort.
  • embodiments of this disclosure provide a movable chair frame and a folding chair.
  • the folding chair using this movable chair frame has an adjustable backrest angle, facilitating user posture adjustment and improving the user experience.
  • inventions of this disclosure provide a movable chair frame for a folding chair.
  • the movable chair frame includes a pair of support rod groups and a connecting assembly connected between the support rod groups.
  • Each support rod group includes a first leg, a second leg, a seat rod, and a back support rod.
  • the seat rod is configured to fix the seat cushion of the folding chair.
  • a first connector is provided at the top of the first leg.
  • the second leg is connected to the first leg through the first connector.
  • the bottom ends of both the first and second legs form the base of the movable chair frame.
  • the seat rod is connected to the first and second legs.
  • the top end of the second leg is provided with a second connector, and the back support rod is hinged to the second connector so that the backrest fixed between the back support rods can rotate.
  • the bottom end of the first leg is provided with a first foot member, which is made of plastic.
  • the bottom of the first foot member has a first anti-slip contact surface, and a plurality of parallel and spaced first anti-slip grooves are formed on the first anti-slip contact surface.
  • the bottom end of the second leg is provided with a second foot piece, which is made of plastic.
  • the bottom of the second foot member has a second anti-slip contact surface, and a plurality of parallel and spaced second anti-slip grooves are formed on the second anti-slip contact surface.
  • the second connector includes a mounting sleeve and a first hinge portion.
  • the mounting sleeve is fitted onto the top end of the second leg, the first hinge portion is fixedly connected to the side of the mounting sleeve, and the back support rod is hinged to the first hinge portion.
  • a first hinge hole is formed on the side of the first hinge portion facing the second connector on the opposite side, and a second hinge hole is formed in the back support rod.
  • the back support rod is hinged to the first hinge portion by fasteners that pass through the first hinge hole and the second hinge hole in sequence.
  • the first hinge portion includes a hinge portion body fixed to the side of the mounting sleeve and a hinge boss formed on the hinge portion body and protruding toward the second connector side on the opposite side, and the first hinge hole is formed on the hinge boss.
  • a reinforcing rib is provided between the side wall of the mounting sleeve and the top of the first hinge portion.
  • a limiting platform is also fixedly provided on the side of the mounting sleeve facing the second connector on the opposite side.
  • the first hinge part is located on the side of the limiting platform near the bottom end of the second leg. The limiting platform can abut against the back support rod when the top end of the back support rod rotates away from the bottom end of the second leg rod, so as to limit the rotation angle of the back support rod.
  • the limiting platform has a mating inclined surface on the side facing the back support rod, and the angle of the mating inclined surface corresponds to the angle when the back support rod rotates to contact the limiting platform.
  • a receiving groove is formed on the mating inclined surface, and the back support rod is partially mated and received in the receiving groove when it rotates to contact the limiting platform.
  • a clearance cavity is formed in the limiting platform, and at least one first fastener is provided in the clearance cavity.
  • the first fastener passes through a through hole penetrating the side wall of the mounting sleeve and is fixedly connected to the second foot rod.
  • the second connector is further provided with at least one second fastener, which passes through a through hole in the side wall of the mounting sleeve and is fixedly connected to the second leg.
  • the second connector includes a mounting sleeve and a second hinge portion, the mounting sleeve being fitted onto the top end of the second leg, and the second hinge portion being fixedly connected to the side of the mounting sleeve;
  • the connecting assembly includes first connecting rods arranged in a cross configuration.
  • the top ends of the first connecting rods are respectively hinged to the second hinge portions of the second connecting members on both sides, and the bottom ends of the first connecting rods are hinged to the bottom ends of the first foot rods on the opposite side.
  • the movable chair frame further includes a first hinge member, the top end of the first connecting rod is hinged to the second hinge portion of the second connecting member through the first hinge member, the first hinge member includes a first hinge plate and a second hinge plate, the second hinge portion has a third hinge hole formed on the side facing the opposite second connecting member, the first hinge plate has a fourth hinge hole formed in it, the second hinge portion is hinged to the first hinge plate through a connector passing through the fourth hinge hole and the third hinge hole, and the top end of the first connecting rod is hinged to the second hinge plate.
  • the bottom end of the first connecting rod is hinged to the bottom end of the first foot rod via a corresponding first foot member.
  • the top end of the second leg passes through the first connector, the second leg is hinged to the top end of the first leg via the first connector and is slidable within the first connector, and the seat post is hinged to both the first and second leg.
  • a first limiting hole is formed on the second leg, and a first limiting pin is provided in the first limiting hole.
  • the first limiting pin is located between the top end of the first connector and the second leg, and can abut against the first connector to limit the first connector.
  • the first connector includes a sleeve portion and a pair of connecting plates, the pair of connecting plates being parallel and spaced apart on one side of the sleeve portion, the sleeve portion being sleeved on the second leg, a first hinge connection hole being formed in the pair of connecting plates, a second hinge connection hole being formed at the top end of the first leg, the top end of the first leg being located between the pair of connecting plates, and the top end of the first leg being hinged to the pair of connecting plates through a connector passing through the first hinge connection hole and the second hinge connection hole.
  • the bottom end of the first leg is provided with a first bottom corner piece, and the bottom of the first bottom corner piece has a first anti-slip contact surface;
  • the bottom end of the second foot is provided with a second bottom corner piece, and the bottom of the second bottom corner piece has a second anti-slip contact surface.
  • the top end of the second leg is bent, and the first connector is disposed between the bend of the second leg and the bottom end of the second leg.
  • the connecting assembly includes a second connecting rod arranged in a cross configuration, the top of the second connecting rod being hinged to the seat rods on both sides, and the bottom of the second connecting rod being hinged to the second foot rod on the opposite side.
  • the top of the second connecting rod bends away from the opposite side of the second connecting rod to form a handle.
  • the connecting assembly includes a second connecting rod arranged in a cross configuration, the top end of the second connecting rod being hinged to the seat rods on both sides, and the bottom end of the second connecting rod being hinged to the second foot rod on the opposite side.
  • the movable chair frame further includes a second hinge member, the top of the first connecting rod is hinged to the seat rod via the second hinge member, the first hinge member includes a third hinge plate and a fourth hinge plate, a fifth hinge hole is formed on the side of the seat rod facing the opposite side of the seat rod, a sixth hinge hole is formed in the third hinge plate, the second hinge part is hinged to the third hinge plate via a connector passing through the fifth hinge hole and the sixth hinge hole, and the top end of the second connecting rod is hinged to the fourth hinge plate.
  • the bottom end of the second connecting rod is hinged to the bottom end of the second foot rod.
  • the bottom end of the second connecting rod is hinged to the bottom end of the second foot rod via a corresponding second foot piece.
  • the movable chair frame further includes an armrest, a support rod, and a third connector.
  • One end of the armrest is hinged to the first connector, and the bottom of the armrest has a groove extending along the extension direction of the armrest.
  • the support rod is hinged to the seat rod, and the top end of the support rod is slidably disposed in the groove.
  • the bottom end of the support rod is hinged to the third connector, and the third connector is sleeved on the second leg and can slide along the second leg.
  • a second limiting hole is formed on the second leg, and a second limiting pin is provided in the second limiting hole.
  • the second limiting pin is located between the third connector and the bottom end of the second leg, and is configured to limit the third connector.
  • this disclosure provides a folding chair, including a seat cushion, a backrest, and the aforementioned movable chair frame, wherein the seat cushion is fixed between the seat rods of the movable chair frame, and the backrest is fixed between the back support rods of the movable chair frame.
  • a second connector is provided at the top of the second leg.
  • the back support rod is hinged to the second leg through the second connector, so that the backrest fixed on the back support rod can rotate around the top of the second leg.
  • the backrest angle can be flexibly adjusted according to their own needs. Specifically, when the user wants to lie back, they can lean back on the backrest, causing the top of the back support rod to rotate backward.
  • the back support rod can also adapt to the user's posture change, with the bottom rotating backward.
  • the back support rod and the backrest fixed on it can follow different posture angles of the human body, closely hug the user's back and support the user's body, ensuring the flexibility of the user in adjusting their sitting posture and improving the user experience.
  • the back support rod is hinged to the second leg rod only through a single second connector, which makes the structure simple and easy to disassemble and maintain. Furthermore, the back support rod will not interfere with other rods during the folding process, thus ensuring the smoothness of the folding chair's folding action.
  • Figure 1 is a structural schematic diagram of the movable chair frame back support rod in the backward tilt state provided in an embodiment of this disclosure
  • Figure 2 is a side view of the movable chair frame in Figure 1;
  • Figure 3 is a structural schematic diagram of the movable chair frame back support rod in the forward tilt state provided in the embodiment of this disclosure
  • Figure 4 is a side view of the movable chair frame in Figure 3;
  • Figure 5 is a partially enlarged schematic diagram of the structure of area A of the movable chair frame in Figure 1;
  • Figure 6 is a schematic diagram showing the relative position between the back support rod and the second connecting member in the forward-leaning state of the movable chair frame provided in this embodiment of the present disclosure.
  • Figure 7 is a schematic diagram showing the relative position of the back support rod and the second connecting member in the reclining state of the movable chair frame provided in the embodiment of this disclosure.
  • Figure 8 is a structural schematic diagram of the first connecting member in the movable chair frame provided in an embodiment of this disclosure.
  • Figures 9 and 10 are schematic diagrams illustrating the folding principle of the movable chair frame provided in the embodiments of this disclosure.
  • Figure 11 is a structural schematic diagram of the movable chair frame back support rod in the backward tilt state provided in the embodiment of this disclosure
  • Figure 12 is a side view of the movable chair frame in Figure 11;
  • Figure 13 is a structural schematic diagram of the movable chair frame back support rod in the forward tilt state provided in the embodiment of this disclosure
  • Figure 14 is a side view of the movable chair frame in Figure 13.
  • Support rod assembly 100 Support rod assembly 100, first foot rod 110, second foot rod 120, first limiting hole 121, second limiting hole 122.
  • an embodiment refers to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this disclosure.
  • the phrase “in an embodiment” appearing in various places throughout the specification does not necessarily refer to the same embodiment.
  • the backrest of a folding chair usually remains at a fixed angle after unfolding. Therefore, no matter how the user moves, the angle of their back is fixed when they lie down in the folding chair, making it difficult to effectively adjust their posture to resist fatigue.
  • an embodiment of this disclosure provides a movable chair frame for a folding chair, as shown in Figures 1 to 4 and Figures 11 to 14.
  • the movable chair frame includes a pair of support rod groups 100 and a connecting assembly 200 connecting the support rod groups 100.
  • Each support rod group 100 includes a first leg 110, a second leg 120, a seat rod 130, and a back support rod 140.
  • the seat rod 130 is configured to fix the seat cushion of the folding chair.
  • a first connector 300 is provided at the top of the first leg 110.
  • the second leg 120 is connected to the top of the first leg 110 through the first connector 300.
  • the bottom ends of both the first leg 110 and the second leg 120 form the base of the movable chair frame.
  • the seat rod 130 is connected to the first leg 110 and the second leg 120.
  • the top of the second leg 120 is provided with a second connector 400, and the back support rod 140 is hinged to the second connector 400 so that the backrest fixed between the back support rods 140 can rotate.
  • the seat rod 130 is configured to fix the seat cushion
  • the back support rod 140 is configured to fix the backrest
  • the bottom ends of the first leg rod 110 and the second leg rod 120 are respectively supported at the front and rear of the center of gravity of the movable chair frame, thereby forming a folding chair structure.
  • a second connector 400 is provided at the top of the second leg rod 120
  • the back support rod 140 is hinged to the second leg rod 120 through the second connector 400, so that the backrest fixed on the back support rod 140 can rotate around the top of the second leg rod 120. Therefore, when the user lies on the folding chair, they can adjust their posture according to their own needs.
  • the backrest angle can be flexibly adjusted according to the user's needs.
  • the back support rod 140 can also adapt to the user's posture changes, with the bottom rotating backward to the state shown in Figures 3, 4, 13, and 14.
  • the back support rod 140 and the backrest fixed on it can follow different posture angles of the human body, closely following the user's back and supporting the user's body, ensuring the flexibility of the user to adjust their sitting posture and improving the user experience.
  • the back support rod 140 is hinged to the second foot rod 120 only through a single second connector 400, which makes the structure simple and easy to disassemble and maintain. Furthermore, the back support rod 140 will not interfere with other rods during the folding process, thus ensuring the smoothness of the folding action of the folding chair.
  • the top end of the second leg 120 passes through the first connector 300, the second leg 120 is hinged to the top end of the first leg 110 through the first connector 300 and can slide in the first connector 300, and the seat bar 130 is hinged to the first leg 110 and the second leg 120.
  • each rod in the support rod assembly 100 is circular (i.e., a circular tube).
  • a first foot piece 510 is provided at the bottom end of the first foot bar 110.
  • the first foot piece 510 is made of plastic, thereby reducing the pressure of the bottom of the folding chair on the ground through the bottom plastic piece, protecting the ground structure and ensuring the service life of the folding chair.
  • the bottom of the first foot member 510 has a first anti-slip contact surface.
  • a plurality of parallel and spaced first anti-slip grooves are formed on the first anti-slip contact surface.
  • stripes, wavy patterns, honeycomb or mesh structures can also be provided on the first anti-slip surface to increase the friction between the first foot member 510 and the ground.
  • the bottom end of the second foot 120 is provided with a second foot piece 520, which is made of plastic.
  • the bottom of the second foot member 520 has a second anti-slip contact surface, on which multiple parallel and spaced second anti-slip grooves are formed.
  • second anti-slip grooves stripes, wavy patterns, honeycomb, or mesh structures can also be provided on the second anti-slip surface to increase the friction between the second foot member 520 and the ground.
  • the second connector 400 includes a mounting sleeve 410 and a first hinge portion 420.
  • the mounting sleeve 410 is sleeved on the top end of the second foot rod 120, and the first hinge portion 420 is fixedly connected to the side of the mounting sleeve 410.
  • the back support rod 140 is hinged to the first hinge portion 420.
  • the first hinge portion 420 has a first hinge hole 423 formed on the side facing the second connector 400 on the opposite side, and a second hinge hole is formed in the back support rod 140.
  • the back support rod 140 is hinged to the first hinge portion 420 by fasteners that pass through the first hinge hole 423 and the second hinge hole in sequence.
  • the first hinge portion 420 includes a hinge portion body 421 fixed to the side of the mounting sleeve 410 and a hinge boss 422 formed on the hinge portion body 421 and protruding toward the opposite side of the second connector 400, and a first hinge hole 423 is formed on the hinge boss 422.
  • a reinforcing rib 424 is provided between the side wall of the mounting sleeve 410 and the top of the first hinge portion 420. That is, the reinforcing rib 424 is provided at the connection between the mounting sleeve 410 and the first hinge portion 420, and the reinforcing rib 424 connects the mounting sleeve 410 and the first hinge portion 420 to improve the overall structural strength of the second connector 400.
  • a limiting platform 430 is also fixedly provided on the side of the mounting sleeve 410 facing the opposite side of the second connector 400.
  • the first hinge part 420 is located on the side of the limiting platform 430 near the bottom end of the second leg 120.
  • the limiting platform 430 can abut against the back support rod 140 when the top end of the back support rod 140 rotates away from the bottom end of the second leg 120, so as to limit the rotation angle of the back support rod 140.
  • the limiting platform 430 can abut against the back support rod 140 when the user leans back, thereby preventing the user from losing balance due to excessive reclining and ensuring the safety of the user when using the folding chair.
  • the folding chair using the movable chair frame provided in the embodiments of this disclosure can be a surface-folding chair, that is, the connecting component 200 between the two sets of support rod groups 100 is a fixed structure, and the folding chair can only be folded by the relative movement between the support rods in the support rod group 100.
  • the connecting assembly 200 includes first connecting rods 210 arranged in a cross configuration.
  • the top ends of the first connecting rods 210 are respectively hinged to the second hinge portions 440 of the second connecting members 400 on both sides, and the bottom ends of the first connecting rods 210 are hinged to the bottom ends of the first foot rods 110 on the opposite side.
  • the bottom end of the first connecting rod 210 is hinged to the bottom end of the first foot rod 110 through a corresponding first foot piece 510.
  • the first connector 300 includes a sleeve portion 310 and a pair of connecting plates 320.
  • the connecting plates 320 are arranged parallel to one side of the sleeve portion 310.
  • the sleeve portion 310 is sleeved on the second leg 120.
  • a first hinge connection hole is formed in the connecting plate 320.
  • a second hinge connection hole is formed at the top end of the first leg 110. The top end of the first leg 110 is located between the connecting plates 320, and the top end of the first leg 110 is hinged to the connecting plate 320 through a connector passing through the first hinge connection hole and the second hinge connection hole.
  • the top end of the second leg 120 is bent, and the first connector 300 is disposed between the bend of the second leg 120 and the bottom end of the second leg 120.
  • the movable chair frame further includes a second hinge member 620.
  • the top of the first connecting rod 210 is hinged to the seat rod 130 through the second hinge member 620.
  • the first hinge member 610 includes a third hinge plate and a fourth hinge plate.
  • a fifth hinge hole is formed on the side of the seat rod 130 facing the opposite side of the seat rod 130.
  • a sixth hinge hole is formed in the third hinge plate.
  • the second hinge part 440 is hinged to the third hinge plate through a connector passing through the fifth hinge hole and the sixth hinge hole.
  • the top of the second connecting rod 220 is hinged to the fourth hinge plate.
  • the bottom end of the second connecting rod 220 is hinged to the bottom end of the second foot rod 120.
  • the bottom end of the second connecting rod 220 is hinged to the bottom end of the second foot rod 120 via a corresponding second foot piece 520.
  • the movable chair frame further includes an armrest assembly 700.
  • the armrest assembly 700 includes an armrest rod 710 (i.e., an armrest), a support rod 720, and a third connector 730.
  • One end of the armrest rod 710 is hinged to the first connector 300.
  • the bottom of the armrest rod 710 has a groove 711 extending along the extension direction of the armrest rod 710.
  • the support rod 720 is hinged to the seat rod 130, and the top end of the support rod 720 is slidably disposed in the groove 711.
  • the bottom end of the support rod 720 is hinged to the third connector 730.
  • the third connector 730 is sleeved on the second foot rod 120 and can slide along the second foot rod 120.
  • the handrail 710 can be flat to reduce the pressure between the handrail and the user's arm and improve comfort.
  • a second limiting hole 122 is formed on the second foot rod 120, and a second limiting pin is provided in the second limiting hole 122.
  • the second limiting pin is located between the third connector 730 and the bottom end of the second foot rod 120, and is configured to limit the third connector 730, thereby preventing the third connector 730 from sliding downward and ensuring the load-bearing capacity of the handrail 710.
  • this disclosure provides a folding chair, including a seat cushion, a backrest, and a front movable chair frame, wherein the seat cushion is fixed between the seat rods 130 of the movable chair frame, and the backrest is fixed between the back support rods 140 of the movable chair frame.
  • a second connector 400 is provided at the top of the second leg 120, and the back support rod 140 is hinged to the second leg 120 through the second connector 400, so that the backrest fixed on the back support rod 140 can rotate around the top of the second leg 120.
  • the back support rod 140 and the backrest can follow different posture angles of the human body, closely follow the user's back and support the user's body, ensuring the flexibility of the user to adjust the sitting posture and improving the user experience.
  • the back support rod 140 is hinged to the second foot rod 120 only through a single second connector 400, which makes the structure simple and easy to disassemble and maintain. Furthermore, the back support rod 140 will not interfere with other rods during the folding process, thus ensuring the smoothness of the folding action of the folding chair.
  • the seat cushion and backrest are integrated into one piece.
  • the embodiments of this disclosure provide a movable chair frame and a folding chair.
  • the folding chair with the movable chair frame has an adjustable backrest angle, which makes it easy for users to adjust their sitting posture and improves the user experience.

Landscapes

  • Special Chairs (AREA)

Abstract

一种活动椅架和折叠椅，活动椅架包括成对设置的支撑杆组以及连接于支撑杆组之间的连接组件，支撑杆组包括第一脚杆、第二脚杆、座位杆和背撑杆，座位杆配置成固定折叠椅的坐垫，第一脚杆的顶端设置有第一连接件，第二脚杆通过第一连接件与第一脚杆连接，第一脚杆的底端以及第二脚杆的底端均形成为活动椅架的底脚，座位杆与第一脚杆以及第二脚杆连接；第二脚杆的顶端设置有第二连接件，背撑杆与第二连接件铰接，以使固定于背撑杆之间的靠背可旋转。背撑杆及靠背可以跟随人体姿势，紧贴用户后背并支撑用户的身体，保证了用户调整坐姿的灵活性。

Description

活动椅架和折叠椅
相关申请的交叉引用
本公开要求于2024年05月13日提交中国专利局的申请号为202421030966.5、名称为“活动椅架和折叠椅”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及折叠椅技术领域，具体地，涉及一种活动椅架和一种折叠椅。
背景技术
现代生活中，椅子作为必备的日常生活家具，用于人们休息坐靠，避免了人们长期躺着或长期站着带来的疲劳感，减轻长期站立的能量消耗；因而被人们广泛应用于各类培训机构、各级学校、公共场所、医院、餐厅、酒店、公司、家庭等各种场所，供用户使用。椅子具有多种结构设计，其中折叠椅作为一种特殊结构的椅子，不仅便于携带、运输，且在非使用时间还可以收合，以减少其占用空间，且折叠椅通常为管件与布料组合结构，其布艺椅面在用户坐靠时可以均匀分散载荷，保证用户舒适性。
然而，现有的折叠椅用户在使用过程中，因长期只能处于同一坐姿，可能会导致用户腰背不适，影响用户使用体验。
公开内容
本公开旨在一定程度上解决相关技术中的技术问题之一。为此，本公开实施例提供了一种活动椅架和一种折叠椅，采用该活动椅架的折叠椅靠背角度可调，便于用户调整坐姿，能够提高用户使用体验。
为实现上述目的，第一方面，本公开实施例提供一种折叠椅的活动椅架，所述活动椅架包括成对设置的支撑杆组以及连接于所述支撑杆组之间的连接组件，所述支撑杆组包括第一脚杆、第二脚杆、座位杆和背撑杆，所述座位杆配置成固定折叠椅的坐垫，所述第一脚杆的顶端设置有第一连接件，所述第二脚杆通过第一连接件与所述第一脚杆连接，所述第一脚杆的底端以及所述第二脚杆的底端均形成为所述活动椅架的底脚，所述座位杆与所述第一脚杆以及所述第二脚杆连接；
所述第二脚杆的顶端设置有第二连接件，所述背撑杆与所述第二连接件铰接，以使固定于所述背撑杆之间的靠背可旋转。
可选地，所述支撑杆组中各个杆的横截面形状均为圆形。
可选地，所述第一脚杆的底端设置有第一底脚件，所述第一底脚件的材质为塑料。
可选地，所述第一底脚件的底部具有第一防滑接触面，所述第一防滑接触面上形成有多个平行间隔设置的第一防滑槽。
可选地，所述第二脚杆的底端设置有第二底脚件，所述第二底脚件的材质为塑料。
可选地，所述第二底脚件的底部具有第二防滑接触面，所述第二防滑接触面上形成有多个平行间隔设置的第二防滑槽。
可选地，所述第二连接件包括安装套和第一铰接部，所述安装套套设在所述第二脚杆的顶端，所述第一铰接部固定连接在所述安装套的侧面，所述背撑杆与所述第一铰接部铰接。
可选地，所述第一铰接部朝向对侧所述第二连接件的一侧形成有第一铰接孔，所述背撑杆中形成有第二铰接孔，所述背撑杆通过依次穿过所述第一铰接孔与所述第二铰接孔的紧固件与所述第一铰接部铰接；
所述第一铰接部包括固定于所述安装套侧面的铰接部本体和形成于所述铰接部本体上且向对侧的所述第二连接件一侧凸出的铰接凸台，所述第一铰接孔形成于所述铰接凸台上。
可选地，所述安装套的侧壁与所述第一铰接部的顶部之间设置有加强筋。
可选地，所述安装套朝向对侧所述第二连接件的一侧还固定设置有限位台，所述第一铰接部位于所述限位台的靠近所述第二脚杆底端的一侧，所述限位台能够在所述背撑杆的顶端向远离所述第二脚杆底端方向旋转时与所述背撑杆抵接，以对所述背撑杆的旋转角度进行限位。
可选地，所述限位台朝向所述背撑杆一侧具有配合斜面，所述配合斜面的角度与所述背撑杆旋转至与所述限位台接触时的角度对应。
可选地，所述配合斜面上形成有容纳凹槽，所述背撑杆旋转至与所述限位台接触时部分配合容纳于所述容纳凹槽中。
可选地，所述限位台中形成有避让腔，所述避让腔中设置有至少一个第一紧固件，所述第一紧固件穿过贯穿所述安装套侧壁的通孔并与所述第二脚杆固定连接。
可选地，所述第二连接件上还设置有至少一个第二紧固件，所述第二紧固件穿过贯穿所述安装套侧壁的通孔并与所述第二脚杆固定连接。
可选地，所述第二连接件包括安装套和第二铰接部，所述安装套套设在所述第二脚杆的顶端，所述第二铰接部固定连接在所述安装套的侧面；
所述连接组件包括交叉设置的第一连接杆，所述第一连接杆的顶端分别与两侧所述第二连接件的所述第二铰接部铰接，所述第一连接杆的底端与对侧的所述第一脚杆的底端铰接。
可选地，所述活动椅架还包括第一铰接件，所述第一连接杆的顶端通过所述第一铰接件与所述第二连接件的所述第二铰接部铰接，所述第一铰接件包括第一铰接板和第二铰接板，所述第二铰接部朝向对侧所述第二连接件的一侧形成有第三铰接孔，所述第一铰接板中形成有第四铰接孔，所述第二铰接部通过穿过所述第四铰接孔和所述第三铰接孔的连接件与所述第一铰接板铰接，所述第一连接杆的顶端与所述第二铰接板铰接。
可选地，所述第一连接杆的底端通过对应的所述第一底脚件与所述第一脚杆的底端铰接。
可选地，所述第二脚杆的顶端穿过所述第一连接件，所述第二脚杆通过所述第一连接件与所述第一脚杆的顶端铰接且能够在所述第一连接件中滑动，所述座位杆与所述第一脚杆以及所述第二脚杆铰接连接。
可选地，所述第二脚杆上形成有第一限位孔，所述第一限位孔中设置有第一限位钉，所述第一限位钉位于所述第一连接件与所述第二脚杆的顶端之间，且能够与所述第一连接件抵接，以对所述第一连接件进行限位。
可选地，所述第一连接件包括套筒部和一对连接板，所述一对连接板平行且间隔设置在所述套筒部的一侧，所述套筒部套设在所述第二脚杆上，所述一对连接板中形成有第一铰接连接孔，所述第一脚杆的顶端形成有第二铰接连接孔，所述第一脚杆的顶端位于所述一对连接板之间，且所述第一脚杆的顶端通过穿过所述第一铰接连接孔与所述第二铰接连接孔的连接件与所述一对连接板铰接。
可选地，所述第一脚杆的底端设置有第一底角件，所述第一底角件的底部具有第一防滑接触面；
和/或，所述第二脚杆的底端设置有第二底角件，所述第二底角件的底部具有第二防滑接触面。
可选地，所述第二脚杆的顶端弯曲设置，所述第一连接件设置于所述第二脚杆的弯折处与所述第二脚杆的底端之间。
可选地，所述连接组件包括交叉设置的第二连接杆，所述第二连接杆的顶部分别与两侧的所述座位杆铰接，所述第二连接杆的底端与对侧的所述第二脚杆铰接；
所述第二连接杆的顶端向背离对侧所述第二连接杆的一侧弯曲形成把手部。
可选地，所述连接组件包括交叉设置的第二连接杆，所述第二连接杆的顶端分别与两侧的所述座位杆铰接，所述第二连接杆的底端与对侧的所述第二脚杆铰接。
可选地，所述活动椅架还包括第二铰接件，所述第一连接杆的顶部通过所述第二铰接件与所述座位杆铰接，所述第一铰接件包括第三铰接板和第四铰接板，所述座位杆朝向对侧所述座位杆的一侧形成有第五铰接孔，所述第三铰接板中形成有第六铰接孔，所述第二铰接部通过穿过所述第五铰接孔和所述第六铰接孔的连接件与所述第三铰接板铰接，所述第二连接杆的顶端与所述第四铰接板铰接。
可选地，所述第二连接杆的底端与所述第二脚杆的底端铰接。
可选地，所述第二连接杆的底端通过对应的所述第二底脚件与所述第二脚杆的底端铰接。
可选地，所述活动椅架还包括扶手杆、支撑杆和第三连接件，所述扶手杆的一端与所述第一连接件铰接，所述扶手杆的底部具有沿所述扶手杆的延伸方向延伸的滑槽，所述支撑杆与所述座位杆铰接，且所述支撑杆的顶端滑动设置在所述滑槽中，所述支撑杆的底端与所述第三连接件铰接，所述第三连接件套设在所述第二脚杆上且能够沿所述第二脚杆滑动。
可选地，所述第二脚杆上形成有第二限位孔，所述第二限位孔中设置有第二限位钉，所述第二限位钉位于所述第三连接件与所述第二脚杆的底端之间，且配置成对所述第三连接件进行限位。
第二方面，本公开实施例提供一种折叠椅，包括坐垫、靠背和前面所述的活动椅架，其中，所述坐垫固定于所述活动椅架的座位杆之间，所述靠背固定于所述活动椅架的背撑杆之间。
与现有的技术相比，本公开实施例的有益效果包括，例如：
在本公开实施例提供的活动椅架中，第二脚杆的顶端设置有第二连接件，背撑杆通过第二连接件与第二脚杆铰接，从而使背撑杆上固定的靠背可绕第二脚杆的顶端旋转，进而当用户躺在折叠椅上时，可以根据自身需求灵活调整靠背角度，具体地，当用户想要向后躺下时，可以向后倒在靠背上，使背撑杆的顶端向后转动，当用户坐直时，背撑杆也能够顺应用户姿势变化，底端向后转动，从而背撑杆及其上固定的靠背可以跟随人体不同的姿势角度，紧贴用户后背并支撑用户的身体，保证了用户调整坐姿的灵活性，提高了用户使用体验。
此外，背撑杆仅通过单个第二连接件与第二脚杆铰接，结构简单异于拆装维护，并且背撑杆在折叠过程中不会与其他杆件发生干涉，从而保证了折叠椅折叠动作的流畅性。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本公开的某些实施例，因此不应被看作是对范围的限定，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他相关的附图。
下面结合附图对本公开作进一步说明：
图1是本公开实施例提供的活动椅架背撑杆后仰状态下的结构示意图；
图2是图1中活动椅架的侧视图；
图3是本公开实施例提供的活动椅架背撑杆前倾状态下的结构示意图；
图4是图3中活动椅架的侧视图；
图5是图1中活动椅架A区域结构的局部放大示意图；
图6是本公开实施例提供的活动椅架中背撑杆在前倾状态下与第二连接件之间的相对位置示意图；
图7是本公开实施例提供的活动椅架中背撑杆在后仰状态下与第二连接件之间的相对位置示意图；
图8是本公开实施例提供的活动椅架中第一连接件的结构示意图；
图9至图10是本公开实施例提供的活动椅架的收折原理示意图；
图11是本公开实施例提供的活动椅架背撑杆后仰状态下的结构示意图；
图12是图11中活动椅架的侧视图；
图13是本公开实施例提供的活动椅架背撑杆前倾状态下的结构示意图；
图14是图13中活动椅架的侧视图。
附图标记说明：
支撑杆组100、第一脚杆110、第二脚杆120、第一限位孔121、第二限位孔122、
座位杆130、背撑杆140、连接组件200、第一连接杆210、第二连接杆220、第一连接件300、套筒部310、连接板320、第二连接件400、安装套410、第一铰接部420、铰接部本体421、铰接凸台422、第一铰接孔423、限位台430、配合斜面431、容纳凹槽432、避让腔433、第二铰接部440、第三铰接孔441、第一紧固件451、第二紧固件452、第一底脚件510、第二底脚件520、第一铰接件610、第一铰接板611、第二铰接板612、第二铰接件620、扶手组件700、扶手杆710、滑槽711、支撑杆720、第三连接件730。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。基于实施方式中的实施例，旨在用于解释本公开，而不能理解为对本公开的限制。
在本说明书中引用的“一个实施例”或“实例”或“例子”意指结合实施例本身描述的特定特征、结构或特性可被包括在本公开公开的至少一个实施例中。短语“在一个实施例中”在说明书中的各位置的出现不必都是指同一个实施例。
在相关技术中，折叠椅的靠背通常在展开后保持在固定角度，因此无论用户怎样活动，其躺入折叠椅时后背的角度也都是固定的，难以有效调整坐姿抵抗疲劳。
为解决上述技术问题，作为本公开的一个方面，本公开实施例提供一种折叠椅的活动椅架，如图1至图4、图11至图14所示，活动椅架包括成对设置的支撑杆组100以及连接于支撑杆组100之间的连接组件200，支撑杆组100包括第一脚杆110、第二脚杆120、座位杆130和背撑杆140，座位杆130配置成固定折叠椅的坐垫，第一脚杆110的顶端设置有第一连接件300，第二脚杆120通过第一连接件300与第一脚杆110的顶端连接，第一脚杆110的底端以及第二脚杆120的底端均形成为活动椅架的底脚，座位杆130与第一脚杆110以及第二脚杆120连接；
第二脚杆120的顶端设置有第二连接件400，背撑杆140与第二连接件400铰接，以使固定于背撑杆140之间的靠背可旋转。
在本公开实施例提供的活动椅架中，座位杆130配置成固定坐垫，背撑杆140配置成固定靠背，第一脚杆110和第二脚杆120的底端分别在活动椅架的重心前后进行支撑，从而形成折叠椅结构，并且，第二脚杆120的顶端设置有第二连接件400，背撑杆140通过第二连接件400与第二脚杆120铰接，从而使背撑杆140上固定的靠背可绕第二脚杆120的顶端旋转，进而当用户躺在折叠椅上时，可以根据自身需求灵活调整靠背角度，具体地，当用户想要向后躺下时，可以向后倒在靠背上，使背撑杆140的顶端向后转动，如图1、图2、图11、图12所示；当用户坐直时，背撑杆140也能够顺应用户姿势变化，底端向后转动至如图3、图4、图13、图14所示状态，从而背撑杆140及其上固定的靠背可以跟随人体不同的姿势角度，紧贴用户后背并支撑用户的身体，保证了用户调整坐姿的灵活性，提高了用户使用体验。
此外，背撑杆140仅通过单个第二连接件400与第二脚杆120铰接，结构简单异于拆装维护，并且背撑杆140在折叠过程中不会与其他杆件发生干涉，从而保证了折叠椅折叠动作的流畅性。
可选地，如图1至图4、图11至图14所示，第二脚杆120的顶端穿过第一连接件300，第二脚杆120通过第一连接件300与第一脚杆110的顶端铰接且能够在第一连接件300中滑动，座位杆130与第一脚杆110以及第二脚杆120铰接连接。
当需要收起折叠椅时，如图9至图10所示(图中箭头方向即为各杆件的引动及转动方向)，第二脚杆120在第一连接件300中向上滑动，同时带动座位杆130，最终使第二脚杆120与座位杆130均转动至靠近第一脚杆110；折叠椅展开时活动椅架的变换动作相反，此处不再赘述。
可选地，如图1至图4、图11至图14所示，支撑杆组100中各个杆的横截面形状均为圆形(即圆管)。
可选地，如图1至图4、图11至图14所示，第一脚杆110的底端设置有第一底脚件510，第一底脚件510的材质为塑料，从而通过底部塑料件减小折叠椅底部对地面的压强，保护地面结构并保证折叠椅的使用寿命。
可选地，第一底脚件510的底部具有第一防滑接触面。具体地，第一防滑接触面上形成有多个平行间隔设置的第一防滑槽。除了设置第一防滑槽，还可在第一防滑表面设置条纹、波浪纹、蜂窝或网状结构等，来增大第一底角件510与地面之间的摩擦力。通过设置第一防滑接触面可进一步增大第一底脚件510底部与地面之间的摩擦力，保证折叠椅的抓地效果，进而保证折叠椅的稳定性。
同样地，可选地，第二脚杆120的底端设置有第二底脚件520，第二底脚件520的材质为塑料。
可选地，第二底脚件520的底部具有第二防滑接触面，第二防滑接触面上形成有多个平行间隔设置的第二防滑槽。除了设置第二防滑槽，还可在第二防滑表面设置条纹、波浪纹、蜂窝或网状结构等，来增大第二底角件520与地面之间的摩擦力。通过设置第二防滑接触面可进一步增大第二底脚件520底部与地面之间的摩擦力，保证折叠椅的抓地效果，进而保证折叠椅的稳定性。
可选地，如图5所示，第二连接件400包括安装套410和第一铰接部420，安装套410套设在第二脚杆120的顶端，第一铰接部420固定连接在安装套410的侧面，背撑杆140与第一铰接部420铰接。
具体地，如图5所示，第一铰接部420朝向对侧第二连接件400的一侧形成有第一铰接孔423，背撑杆140中形成有第二铰接孔，背撑杆140通过依次穿过第一铰接孔423与第二铰接孔的紧固件与第一铰接部420铰接。
可选地，如图5所示，第一铰接部420包括固定于安装套410侧面的铰接部本体421和形成于所述铰接部本体421上且向对侧第二连接件400一侧凸出的铰接凸台422，第一铰接孔423形成于铰接凸台422上。
为提高第二连接件400的结构强度，可选地，如图5所示，安装套410的侧壁与第一铰接部420的顶部之间设置有加强筋424。即，加强筋424设置于安装套410和第一铰接部420的连接处，加强筋424同时连接安装套410和第一铰接部420，以提高第二连接件400的整体结构强度。
可选地，如图5所示，安装套410朝向对侧第二连接件400的一侧还固定设置有限位台430，第一铰接部420位于限位台430的靠近第二脚杆120底端的一侧，限位台430能够在背撑杆140的顶端向远离第二脚杆120底端方向旋转时与背撑杆140抵接，以对背撑杆140的旋转角度进行限位。
通过在安装套410上固定设置有限位台430，如图6至图7所示，限位台430能够在靠背后仰时与背撑杆140抵接，从而防止用户躺倒幅度过大重心失衡，保证了用户使用折叠椅的安全性。
为分散背撑杆140载荷，降低限位台430上的应力集中，可选地，如图5所示，限位台430朝向背撑杆140一侧具有配合斜面431，配合斜面431的角度与背撑杆140旋转至与限位台430接触时的角度对应。即限位台430与安装套410铰接，限位台430可相对安装套410转动，从而带动配合斜面431旋转，以抵接背撑杆140。
为进一步降低限位台430上的应力集中，可选地，如图5所示，配合斜面431上形成有容纳凹槽432，背撑杆140旋转至与限位台430接触时部分配合容纳于容纳凹槽432中，从而通过容纳凹槽432的弧形内壁均匀支撑背撑杆140，进一步分散限位台430上的应力。
可选地，如图5所示，限位台430中形成有避让腔433，避让腔433中设置有至少一个第一紧固件451，第一紧固件451穿过贯穿安装套410侧壁的通孔并与第二脚杆120固定连接。第一紧固件451可以为转轴，也可以为螺纹紧固件如螺栓、螺钉等。限位台430可通过第一紧固件451与第二脚杆120固定连接，也可通过第一紧固件451与第二脚杆120铰接。
可选地，如图5所示，第二连接件400上还设置有至少一个第二紧固件452，第二紧固件452穿过贯穿安装套410侧壁的通孔并与第二脚杆120固定连接。
可选地，应用本公开实施例提供的活动椅架的折叠椅可以是面式收折的椅子，即连接于两套支撑杆组100之间的连接组件200为固定结构，折叠椅仅能通过支撑杆组100中各支撑杆之间的相对活动实现收折。
或者，为进一步缩小折叠椅在折叠状态下的占用空间，可选地，如图5所示，第二连接件400还包括第二铰接部440，第二铰接部440固定连接在安装套410的侧面(且位于安装套410背离第一铰接部420的一侧)；
如图1至图4、图11至图14所示，连接组件200包括交叉设置的第一连接杆210，第一连接杆210的顶端分别与两侧第二连接件400的第二铰接部440铰接，第一连接杆210的底端与对侧的第一脚杆110的底端铰接。
可选地，在本公开实施例中，连接组件200包括交叉设置的第一连接杆210，当收拢折叠椅时，如图9至图10所示，第一连接杆210的两端分别被拉往上下两侧，从而使两个第一连接杆210趋近于平行，以将两组支撑杆组100收拢，进而实现将折叠椅沿宽度方向同步收紧，进一步缩小折叠椅在折叠状态下占用的空间。
可选地，如图1至图5、图11至图14所示，活动椅架还包括第一铰接件610，第一连接杆210的顶端通过第一铰接件610与第二连接件400的第二铰接部440铰接，第一铰接件610包括第一铰接板611和第二铰接板612，第二铰接部440与第一铰接板611铰接，第一连接杆210的顶端与第二铰接板612铰接。
具体地，如图5所示，第二铰接部440朝向对侧第二连接件400的一侧形成有第三铰接孔441，第一铰接板611中形成有第四铰接孔，第二铰接部440通过穿过第四铰接孔和第三铰接孔441的连接件与第一铰接板611铰接。
可选地，如图1至图4、图11至图14所示，第一连接杆210的底端通过对应的第一底脚件510与第一脚杆110的底端铰接。
可选地，如图8所示，第二脚杆120上形成有第一限位孔121，第一限位孔121中设置有第一限位钉(图中未示出)，第一限位钉位于第一连接件300与第二脚杆120的顶端之间，且能够与第一连接件300抵接，以对第一连接件300进行限位，从而实现对折叠椅的最大张开角度进行限位。
可选地，如图8所示，第一连接件300包括套筒部310和一对连接板320，连接板320平行设置在套筒部310的一侧，套筒部310套设在第二脚杆120上，连接板320中形成有第一铰接连接孔，第一脚杆110的顶端形成有第二铰接连接孔，第一脚杆110的顶端位于连接板320之间，且第一脚杆110的顶端通过穿过第一铰接连接孔与第二铰接连接孔的连接件与连接板320铰接。
可选地，如图1至图4、图11至图14所示，第二脚杆120的顶端弯曲设置，第一连接件300设置于第二脚杆120的弯折处与第二脚杆120的底端之间。
可选地，如图1至图4、图11至图14所示，连接组件200还包括交叉设置的第二连接杆220，第二连接杆220的顶部分别与两侧的座位杆130铰接，第二连接杆220的底端与对侧的第二脚杆120铰接。
可选地，在本公开实施例中，连接组件200包括交叉设置的第二连接杆220，当收拢折叠椅时，如图9至图10所示，第二连接杆220的两端分别被拉往上下两侧，从而使两个第二连接杆220趋近于平行，进而实现将两组支撑杆组100收拢。
可选地，如图1至图4所示，第二连接杆220的顶端向背离对侧第二连接杆220的一侧弯曲形成把手部。
可选地，如图1至图4、图11至图14所示，活动椅架还包括第二铰接件620，第一连接杆210的顶部通过第二铰接件620与座位杆130铰接，第一铰接件610包括第三铰接板和第四铰接板，座位杆130朝向对侧座位杆130的一侧形成有第五铰接孔，第三铰接板中形成有第六铰接孔，第二铰接部440通过穿过第五铰接孔和第六铰接孔的连接件与第三铰接板铰接，第二连接杆220的顶端与第四铰接板铰接。
可选地，如图11至图14所示，第二连接杆220的底端与第二脚杆120的底端铰接。
可选地，如图11至图14所示，第二连接杆220的底端通过对应的第二底脚件520与第二脚杆120的底端铰接。
可选地，如图11至图14所示，活动椅架还包括扶手组件700，扶手组件700包括扶手杆710(即扶手)、支撑杆720和第三连接件730，扶手杆710的一端与第一连接件300铰接，扶手杆710的底部具有沿扶手杆710的延伸方向延伸的滑槽711，支撑杆720与座位杆130铰接，且支撑杆720的顶端滑动设置在滑槽711中，支撑杆720的底端与第三连接件730铰接，第三连接件730套设在第二脚杆120上且能够沿第二脚杆120滑动。
可选地，如图11、图13所示，扶手杆710可以为扁平状，以减小扶手与用户手臂之间的压强，提高舒适性。
可选地，如图11至图14所示，第二脚杆120上形成有第二限位孔122，第二限位孔122中设置有第二限位钉，第二限位钉位于第三连接件730与第二脚杆120的底端之间，且配置成对第三连接件730进行限位，从而阻挡第三连接件730向下滑动，保证扶手杆710的载重能力。
第二方面，本公开实施例提供一种折叠椅，包括坐垫、靠背和前面的活动椅架，其中，坐垫固定于活动椅架的座位杆130之间，靠背固定于活动椅架的背撑杆140之间。
可选地，在本公开提供的折叠椅中，第二脚杆120的顶端设置有第二连接件400，背撑杆140通过第二连接件400与第二脚杆120铰接，从而使背撑杆140上固定的靠背可绕第二脚杆120的顶端旋转，进而当用户躺在折叠椅上时，可以根据自身需求灵活调整靠背角度，从而背撑杆140及靠背可以跟随人体不同的姿势角度，紧贴用户后背并支撑用户的身体，保证了用户调整坐姿的灵活性，提高了用户使用体验。
此外，背撑杆140仅通过单个第二连接件400与第二脚杆120铰接，结构简单异于拆装维护，并且背撑杆140在折叠过程中不会与其他杆件发生干涉，从而保证了折叠椅折叠动作的流畅性。
可选地，坐垫与靠背连接为一体。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，熟悉该本领域的技术人员应该明白本公开包括但不限于附图和上面具体实施方式中描述的内容。任何不偏离本公开的功能和结构原理的修改都将包括在权利要求书的范围中。
工业实用性
综上所述，本公开实施例提供了一种活动椅架和折叠椅，采用具有该活动椅架的折叠椅靠背角度可调，便于用户调整坐姿，能够提高用户使用体验。

Claims (19)

  1. 一种折叠椅的活动椅架，其特征在于，所述活动椅架包括成对设置的支撑杆组以及连接于所述支撑杆组之间的连接组件，所述支撑杆组包括第一脚杆、第二脚杆、座位杆和背撑杆，所述座位杆配置成固定折叠椅的坐垫，所述第一脚杆的顶端设置有第一连接件，所述第二脚杆通过第一连接件与所述第一脚杆连接，所述第一脚杆的底端以及所述第二脚杆的底端均形成为所述活动椅架的底脚，所述座位杆与所述第一脚杆以及所述第二脚杆连接；
    所述第二脚杆的顶端设置有第二连接件，所述背撑杆与所述第二连接件铰接，以使固定于所述背撑杆之间的靠背可旋转。
  2. 根据权利要求1所述的活动椅架，其特征在于，所述第二连接件包括安装套和第一铰接部，所述安装套套设在所述第二脚杆的顶端，所述第一铰接部固定连接在所述安装套的侧面，所述背撑杆与所述第一铰接部铰接。
  3. 根据权利要求2所述的活动椅架，其特征在于，所述第一铰接部朝向对侧所述第二连接件的一侧形成有第一铰接孔，所述背撑杆中形成有第二铰接孔，所述背撑杆通过依次穿过所述第一铰接孔与所述第二铰接孔的紧固件与所述第一铰接部铰接；
    所述第一铰接部包括固定于所述安装套侧面的铰接部本体和形成于所述铰接部本体上且向对侧的所述第二连接件一侧凸出的铰接凸台，所述第一铰接孔形成于所述铰接凸台上。
  4. 根据权利要求2或3所述的活动椅架，其特征在于，所述安装套的侧壁与所述第一铰接部的顶部之间设置有加强筋。
  5. 根据权利要求2-4任一项所述的活动椅架，其特征在于，所述安装套朝向对侧所述第二连接件的一侧还固定设置有限位台，所述第一铰接部位于所述限位台的靠近所述第二脚杆底端的一侧，所述限位台能够在所述背撑杆的顶端向远离所述第二脚杆底端方向旋转时与所述背撑杆抵接，以对所述背撑杆的旋转角度进行限位。
  6. 根据权利要求5所述的活动椅架，其特征在于，所述限位台朝向所述背撑杆一侧具有配合斜面，所述配合斜面的角度与所述背撑杆旋转至与所述限位台接触时的角度对应。
  7. 根据权利要求6所述的活动椅架，其特征在于，所述配合斜面上形成有容纳凹槽，所述背撑杆旋转至与所述限位台接触时部分配合容纳于所述容纳凹槽中。
  8. 根据权利要求5-7任一项所述的活动椅架，其特征在于，所述限位台中形成有避让腔，所述避让腔中设置有至少一个第一紧固件，所述第一紧固件穿过贯穿所述安装套侧壁的通孔并与所述第二脚杆固定连接。
  9. 根据权利要求1-8任一项所述的活动椅架，其特征在于，所述第二连接件包括安装套和第二铰接部，所述安装套套设在所述第二脚杆的顶端，所述第二铰接部固定连接在所述安装套的侧面；
    所述连接组件包括交叉设置的第一连接杆，所述第一连接杆的顶端分别与两侧所述第二连接件的所述第二铰接部铰接，所述第一连接杆的底端与对侧的所述第一脚杆的底端铰接。
  10. 根据权利要求9所述的活动椅架，其特征在于，所述活动椅架还包括第一铰接件，所述第一连接杆的顶端通过所述第一铰接件与所述第二连接件的所述第二铰接部铰接；所述第一铰接件包括呈角度连接的第一铰接板和第二铰接板，所述第二铰接部与所述第一铰接板铰接，所述第一连接杆的顶端与所述第二铰接板铰接。
  11. 根据权利要求1-10中任意一项所述的活动椅架，其特征在于，所述第二脚杆的顶端穿过所述第一连接件，所述第二脚杆通过所述第一连接件与所述第一脚杆的顶端铰接且能够在所述第一连接件中滑动，所述座位杆与所述第一脚杆以及所述第二脚杆铰接连接。
  12. 根据权利要求11所述的活动椅架，其特征在于，所述第二脚杆上形成有第一限位孔，所述第一限位孔中设置有第一限位钉，所述第一限位钉位于所述第一连接件与所述第二脚杆的顶端之间，且能够与所述第一连接件抵接，以对所述第一连接件进行限位。
  13. 根据权利要求1-12中任意一项所述的活动椅架，其特征在于，所述连接组件包括交叉设置的第二连接杆，所述第二连接杆的顶部分别与两侧的所述座位杆铰接，所述第二连接杆的底端与对侧的所述第二脚杆铰接；
    所述第二连接杆的顶端向背离对侧所述第二连接杆的一侧弯曲形成把手部。
  14. 根据权利要求13所述的活动椅架，其特征在于，所述活动椅架还包括第二铰接件，所述第一连接杆的顶部通过所述第二铰接件与所述座位杆铰接；
    所述第一铰接件包括呈角度连接的第三铰接板和第四铰接板，所述座位杆朝向对侧所述座位杆的一侧形成有第五铰接孔，所述第三铰接板中形成有第六铰接孔，所述第二铰接部通过穿过所述第五铰接孔和所述第六铰接孔的连接件与所述第三铰接板铰接，所述第二连接杆的顶端与所述第四铰接板铰接。
  15. 根据权利要求1-14所述的活动椅架，其特征在于，所述第一连接件包括套筒部和一对连接板，所述一对连接板平行且间隔设置在所述套筒部的一侧，所述套筒部套设在所述第二脚杆上，所述一对连接板中形成有第一铰接连接孔，所述第一脚杆的顶端形成有第二铰接连接孔，所述第一脚杆的顶端位于所述一对连接板之间，且所述第一脚杆的顶端通过穿过所述第一铰接连接孔与所述第二铰接连接孔的连接件与所述一对连接板铰接。
  16. 根据权利要求1-15所述的活动椅架，其特征在于，所述第一脚杆的底端设置有第一底角件，所述第一底角件的底部具有第一防滑接触面；
    和/或，所述第二脚杆的底端设置有第二底角件，所述第二底角件的底部具有第二防滑接触面。
  17. 根据权利要求1-16所述的活动椅架，其特征在于，所述活动椅架还包括扶手组件，所述扶手组件包括依次连接的扶手杆、支撑杆和第三连接件，所述扶手杆的一端与所述第一连接件铰接；所述扶手杆的底部具有沿所述扶手杆的延伸方向延伸的滑槽，所述支撑杆与所述座位杆铰接，且所述支撑杆的顶端滑动设置在所述滑槽中，所述支撑杆的底端与所述第三连接件铰接，所述第三连接件套设在所述第二脚杆上且能够沿所述第二脚杆滑动。
  18. 根据权利要求17所述的活动椅架，其特征在于，所述第二脚杆上形成有第二限位孔，所述第二限位孔中设置有第二限位钉，所述第二限位钉位于所述第三连接件与所述第二脚杆的底端之间，且配置成对所述第三连接件进行限位。
  19. 一种折叠椅，其特征在于，包括坐垫、靠背和权利要求1-18中任意一项所述的活动椅架，其中，所述坐垫固定于所述活动椅架的座位杆之间，所述靠背固定于所述活动椅架的背撑杆之间。
PCT/CN2025/094608 2024-05-13 2025-05-13 活动椅架和折叠椅 Pending WO2025237296A1 (zh)

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