WO2019223027A1 - 折叠支架 - Google Patents

折叠支架 Download PDF

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Publication number
WO2019223027A1
WO2019223027A1 PCT/CN2018/090211 CN2018090211W WO2019223027A1 WO 2019223027 A1 WO2019223027 A1 WO 2019223027A1 CN 2018090211 W CN2018090211 W CN 2018090211W WO 2019223027 A1 WO2019223027 A1 WO 2019223027A1
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WO
WIPO (PCT)
Prior art keywords
crossbar
bracket
pivotally connected
folding
shaft pin
Prior art date
Application number
PCT/CN2018/090211
Other languages
English (en)
French (fr)
Inventor
张钊
Original Assignee
东莞威信运动用品有限公司
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 东莞威信运动用品有限公司 filed Critical 东莞威信运动用品有限公司
Priority to EP18919861.7A priority Critical patent/EP3785685A4/en
Publication of WO2019223027A1 publication Critical patent/WO2019223027A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0833—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding front to back, e.g. reducing or expanding the overall depth of the wheelchair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K2015/005—Collapsible or foldable cycles having additional wheels for use when folded or collapsed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/003—Cycles with four or more wheels, specially adapted for disabled riders, e.g. personal mobility type vehicles with four wheels
    • B62K5/007—Cycles with four or more wheels, specially adapted for disabled riders, e.g. personal mobility type vehicles with four wheels power-driven

Definitions

  • the present application relates to a folding bracket, in particular to a folding bracket having a simple structure and convenient folding.
  • Wheelchairs are generally very large, and they are usually folded to reduce their volume to facilitate storage.
  • the existing folding wheelchairs are generally manually folded. Due to the complicated design of the folding bracket of the wheelchair, the folding action is more complicated, and the operation is cumbersome. Therefore, for some people with reduced mobility or older, manual folding It takes a lot of effort to fold these wheelchairs; therefore, the existing folding wheelchairs to some extent cause inconvenience to the use of these mobility-impaired or physically disabled people.
  • the purpose of this application is to provide a folding bracket with a simple structure and convenient folding.
  • the folding bracket provided in the present application includes a first bracket, a second bracket, a first crossbar, a second crossbar, and a retractor, and one end of the first bracket is pivotally connected to one end of the second bracket.
  • the other end of the first bracket is pivotally connected to one end of the first crossbar
  • the other end of the second bracket is pivotally connected to one end of the second crossbar
  • the other end of the first crossbar Pivotally connected to the other end of the second crossbar
  • the retractor is pivotally connected to the first bracket, and the telescopic end of the retractor is connected to any of the first crossbar and the second crossbar Articulation.
  • first bracket, the second bracket, the first crossbar, and the second crossbar are pivoted to each other to form a quadrangular bracket, and then the first bracket, the first crossbar, and the A retractor is arranged between any one of the second crossbars, so that the quadrangular bracket can expand or collapse as the retractor contracts or expands.
  • the structure is very simple and can be applied to various It is very convenient to use on a folded device.
  • an elongated slot is provided on the cross bar pivotally connected to the telescopic end.
  • the telescopic end is provided with a shaft pin, and the shaft pin is slidably disposed in the long slot.
  • the folding bracket further includes a limiting member, and the limiting member is movably disposed on a cross bar pivotally connected to the telescopic end, and the limiting member can be aligned in the elongated groove.
  • the shaft pin is locked or unlocked. Because the stopper is movably disposed, when the stopper is in a position that limits the pivot pin, the telescopic rod can be used to push the crossbar to automatically fold or unfold the entire folding bracket; When the bit is in the position where the shaft pin is released, the shaft pin can be slid in the long groove, thereby avoiding the restriction of the crossbar by the retractor, and enabling the entire folding bracket to be manually folded or unfolded.
  • the limiter includes a main body and a limiter connected to the main body, the main body is pivotally connected to a cross bar pivotally connected to the telescopic end, and the limiter holds the shaft pin .
  • the shaft pin is clamped by the limiting portion and the end of the elongated groove together, so that the shaft pin and the crossbar can be relatively fixed; automatic operation using a retractor is realized.
  • the limiting portion is provided with a guide slope.
  • the guide inclined surface can use the pushing force of the shaft pin to drive the limiting member to open, thereby enabling The shaft pin can be normally slid to a position held by the limiting portion.
  • the limiter further includes an operation handle, and the operation handle is fixed to the main body.
  • the operating handle can be convenient for an operator to open the limiter when it is manually operated.
  • the folding bracket further includes an elastic resetting member, which can drive the limiting member to automatically engage with the shaft pin.
  • the elastic resetting member is a torsion spring.
  • the other end of the first cross bar is provided with a first abutting portion
  • the other end of the second cross bar is provided with a second abutting portion.
  • the first abutting portion and the second abutting portion abut against each other.
  • FIG. 1 is a schematic structural diagram of a folding bracket of the present application.
  • FIG. 2 is an exploded view of the folding bracket of the present application.
  • FIG. 3 is a connection structural diagram of a first cross bar and a second cross bar of the folding bracket of the present application.
  • FIG. 4 is a state diagram when the first cross bar and the second cross bar of the folding bracket of the present application are automatically folded.
  • FIG. 5 is a state diagram when the first cross bar and the second cross bar of the folding bracket of the present application are manually folded.
  • FIG. 6 is a perspective view of a folding bracket applied to a folding vehicle according to the present application.
  • FIG. 7 is a state diagram when the folding cart of the present application is unfolded.
  • FIG. 8 is a state diagram of the folding cart of the present application when folded.
  • the folding bracket of the present application includes a first bracket 1, a second bracket 2, a first crossbar 3, a second crossbar 4, and a retractor 5.
  • One end is pivotally connected to one end of the second bracket 2, the other end of the first bracket 1 is pivotally connected to one end of the first crossbar 3, and the other end of the second bracket 2 is connected to the second crossbar.
  • One end of the rod 4 is pivotally connected, the other end of the first crossbar 3 is pivotally connected to the other end of the second crossbar 4; the retractor 5 is pivotally connected to the first bracket 1, and the retractor 5
  • the telescopic end is pivotally connected to any one of the first crossbar 3 and the second crossbar 4.
  • the first bracket 1 is a rear leg
  • the second bracket 2 is a front leg
  • the first bracket 1 and the second bracket are 2 are located on both sides of the folding wheelchair 100.
  • the lower ends of the two first brackets 1 are fixed to the rear wheel bracket 101 of the folding wheelchair 100
  • the lower ends of the two second brackets 2 are pivotally connected to the front wheel bracket 102 of the folding wheelchair 100.
  • the first crossbar 3 and the second crossbar 4 are located in the lower middle of the folding wheelchair 100, and the rear end of the first crossbar 3 is pivotally connected to the rear wheel bracket 101.
  • the front end of the second cross bar 4 is pivotally connected to the front wheel bracket 102.
  • the retractor 5 of this embodiment is an electric push rod, which is pivotally connected to the rear wheel bracket 101, and the telescopic end of the retractor 5 is pivotally connected to the first crossbar 3.
  • the first cross bar 3 and the second cross bar 4 both have an inverted U-shaped structure, and an elongated groove 31 is formed on the side of the first cross bar 3.
  • the elongated groove 31 extends along the length of the first crossbar 3; a shaft pin 51 is provided on the telescopic end, and a central axis of the shaft pin 51 is perpendicular to a central axis of the telescopic end, and the shaft pin 51 is slidably disposed in the elongated groove 31.
  • the folding bracket further includes a stopper 6 which has an inverted U-shaped structure.
  • the stopper 6 is movably disposed on the first crossbar 3, and the stopper 6 can The shaft pin 51 in the elongated groove 31 is locked or unlocked.
  • the limiting member 6 is pivotally connected to the first crossbar 3.
  • the limiting member 6 includes a main body 61 and a limiting portion 62 connected to the main body 61.
  • the main body 61 passes through a rotating shaft. Pivotally connected to a cross bar pivotally connected to the telescopic end, the front side of the limiting portion 62 is blocked in the extending direction of the elongated slot 31, so that it can be held together with the front end of the elongated slot 31 ⁇ ⁇ 51 ⁇
  • the shaft pin 51 A guiding inclined surface 63 is provided on the limiting portion 62.
  • the limiter 6 further includes an operation handle 64, and the operation handle 64 is fixed to the main body 61.
  • the operating handle can be convenient for an operator to open the limiting member 6 when it is manually operated.
  • the folding bracket further includes an elastic resetting member 7 which is a torsion spring. The elastic resetting member 7 can drive the limiting member 6 to automatically engage with the shaft pin 51.
  • the other end of the first cross bar 3 is provided with a first abutment portion 3a
  • the other end of the second cross bar 4 is provided with a second abutment portion 4a.
  • the first abutting portion 3a and the second abutting portion 4a abut against each other.
  • FIG. 4 and FIG. 8 again, when the folding wheelchair 100 is automatically folded, it is only necessary to control the extension end of the retractor 5 to extend. At this time, due to the limitation member 6 and the The front ends of the elongated grooves 31 lock the shaft pin 51 together, so that the retractor 5 pushes the front end of the first crossbar 3, and the front end of the first crossbar 3 swings upward, driving the second crossbar The rod 4 swings upward. At this time, the first crossbar 3 and the second crossbar 4 are closer to each other in the middle, and at the same time, the rear end of the first crossbar 3 drives the first bracket 1 around the upper end thereof.
  • the center of the pivot joint is pivotally moved closer to the middle, and the front end of the second cross bar 4 drives the second bracket 2 to pivot toward the center around the pivot joint center of the upper end thereof.
  • the first crossbar 3, the second crossbar 4, the first bracket 1, the second bracket 2, and the retractor 5 are brought closer together to achieve folding.
  • the folding wheelchair 100 it is only necessary to control the retractable end of the retractor 5 to shrink, so that the first crossbar 3, the second crossbar 4, the first bracket 1 and the second bracket 2 can be moved along. Movement in the opposite direction during folding, until the first abutting portion 3a and the second abutting portion 4a abut against each other, and the wheelchair 100 can be completely unfolded when the wheelchair 100 is folded.
  • the operation handle 64 is operated to rotate the stopper 6, thereby driving the stopper 62 away from the length.
  • the groove 31 can release the shaft pin 51 of the telescopic end, so that the shaft pin 51 can slide in the long groove 31.
  • the first bracket 1 and the second bracket 2 are manually brought closer to each other, and at the same time, the first crossbar 3 and the second crossbar 4 are brought closer to each other.
  • the shaft pin 51 is extended from the length
  • the starting end of the groove 31 is slid to the end, so that manual folding can be realized.
  • the first bracket 1, the second bracket 2, the first crossbar 3, and the second crossbar 4 need to be manually expanded to each other.
  • the shaft pin 51 Slide from the end of the elongated groove 31 to the beginning, and push the limiting portion 62 through the guide inclined surface 63 to rotate the limiting portion 62 upward to avoid the shaft pin 51, so that the shaft pin 51 Re-enter between the start end of the elongated groove 31 and the limiting portion 62, again being held by the limiting portion 62, and the first abutting portion 3a and the second abutting portion 4a abut against each other,
  • the folding wheelchair 100 can now be fully deployed
  • first bracket 1, the second bracket 2, the first crossbar 3, and the second crossbar 4 are pivotally connected to each other to form a quadrangular bracket, and then the first bracket 1 and the first bracket A telescopic device 5 is arranged between the cross bars 3, so that the folding wheelchair 100 can achieve the purpose of unfolding or folding as the telescopic device 5 contracts or extends.
  • the stopper 6 is movably disposed. Therefore, when the stopper 6 is in a position that limits the shaft pin 51, the shaft pin 51 can be made. It is relatively fixed with the first crossbar 3, and then the crossbar 5 is used to push the crossbar, so that the entire folding wheelchair 100 can be folded or unfolded automatically.
  • the shaft pin 51 can be slid in the elongated groove 31, thereby avoiding the restriction of the first cross bar 3 by the retractor 5 and enabling the folding wheelchair
  • the cart 100 can be folded or unfolded manually, the structure is very simple, and the use is very convenient.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

一种折叠支架，包括第一支架、第二支架、第一横杆、第二横杆及伸缩器，所述第一支架的一端与所述第二支架的一端枢接，所述第一支架的另一端与所述第一横杆的一端枢接，所述第二支架的另一端与所述第二横杆的一端枢接，所述第一横杆的另一端与第二横杆的另一端枢接；所述伸缩器枢接于所述第一支架，且所述伸缩器的伸缩端与所述第一横杆及所述第二横杆的任一者枢接。本申请折叠支架在收折或展开时，能实现手动或自动操作，结构十分简单，使用非常方便。

Description

折叠支架 技术领域
本申请涉及一种折叠支架，尤其涉及一种结构简单，折叠方便的折叠支架。
背景技术
轮椅的体积一般都很大，通常采用折叠的方式使其体积减少，以方便储存。然而，现有的折叠式轮椅一般都是手动折叠的，由于轮椅的折叠支架设计得较为复杂，折叠的动作较多，操作繁琐，因而，对于一些行动不便或者年龄较大的人来说，手动折叠这些轮椅需要耗费较大的力气；因此，现有的折叠轮椅在一定程度上给这些行动不便或肢体残缺的人带来使用上的不便。
申请内容
本申请的目的在于提供一种结构简单，折叠方便的折叠支架。
为了实现上述目的，本申请提供的折叠支架包括第一支架、第二支架、第一横杆、第二横杆及伸缩器，所述第一支架的一端与所述第二支架的一端枢接，所述第一支架的另一端与所述第一横杆的一端枢接，所述第二支架的另一端与所述第二横杆的一端枢接，所述第一横杆的另一端与第二横杆的另一端枢接；所述伸缩器枢接于所述第一支架，且所述伸缩器的伸缩端与所述第一横杆及所述第二横杆的任一者枢接。
本申请通过将所述第一支架、第二支架、第一横杆、第二横杆相互枢接在一起形成一四边形支架，再在所述第一支架和所述第一横杆及所述第二横杆的任一者之间设置伸缩器，从而使所述四边形支架能随着所述伸缩器的收缩或伸出而达到展开或收折的目的，结构十分简单，可以适用于各种折叠的设备上，使用非常方便。
较佳地，与所述伸缩端枢接的横杆上开设有一长形槽，所述伸缩端设有轴销，所述轴销滑动地设置于所述长形槽内。
具体地，所述折叠支架还包括限位件，所述限位件可活动地设置于与所述伸缩端枢接的横杆上，所述限位件能对在所述长形槽内的所述轴销锁定或释锁。由于所述限位件呈可活动地设置，因此，当限位件处于限制所述轴销的位置时，可以利用所述伸缩器推动横杆，使整个折叠支架自动收折或展开；当限位件处于释放所述轴销的位置时，可以使所述轴销在所述长形槽中滑动，从而避免伸缩器对横杆的限制，使整个折叠支架实现手动收折或展开。
具体地，所述限位件包括主体及连接于所述主体的限位部，所述主体枢接于与所述伸缩端枢接的横杆上，所述限位部卡持所述轴销。通过将所述限位部与所述长形槽的端部共同夹持所述轴销，从而可以使所述轴销与该横杆相对固定；实现利用伸缩器自动操作。
具体地，所述限位部上设有导向斜面。在所述轴销从所述长形槽的另一端滑到与所述限位部卡持的一端时，所述导向斜面可以利用轴销的顶推力驱使所述限位件转动打开，从而使所述轴销能正常滑到被所述限位部卡持的位置。
具体地，所述限位件还包括操作手柄，所述操作手柄固定于所述主体。所述操作的手柄可以在手动操作时，方便操作者打开所述限位件。
具体地，所述折叠支架还包括弹性复位件，所述弹性复位件能驱使所述限位件自动与所述轴销卡持。
具体地，所述弹性复位件为扭簧。
较佳地，所述第一横杆的另一端设有第一抵触部，所述第二横杆的另一端设有第二抵触部，所述第一横杆与第二横杆相互展开时，所述第一抵触部与所述第二抵触部相互抵顶。通过设置所述第一抵触部及第二抵触部，可以使所述第一横杆及第二横杆在完全展开时能相互制约，可以使所述折叠支架在展开时达到相对稳定的状态，并且起到一定的支撑作用。
附图说明
图1是本申请折叠支架的结构示意图。
图2是本申请折叠支架的分解图。
图3是本申请折叠支架的第一横杆及第二横杆的连接结构图。
图4是本申请折叠支架的第一横杆及第二横杆自动收折时的状态图。
图5是本申请折叠支架的第一横杆及第二横杆手动收折时的状态图。
图6是本申请折叠支架应用于折叠车上的立体图。
图7是本申请折叠车在展开时的状态图。
图8是本申请折叠车在收折时的状态图。
具体实施方式
为详细说明本申请的技术内容、构造特征、所实现的效果，以下结合实施方式并配合附图详予说明。
如图1、图2及图3所示，本申请折叠支架包括第一支架1、第二支架2、第一横杆3、第二横杆4及伸缩器5，所述第一支架1的一端与所述第二支架2的一端枢接，所述第一支架1的另一端与所述第一横杆3的一端枢接，所述第二支架2的另一端与所述第二横杆4的一端枢接，所述第一横杆3的另一端与第二横杆4的另一端枢接；所述伸缩器5枢接于所述第一支架1，且所述伸缩器5的伸缩端与所述第一横杆3及所述第二横杆4的任一者枢接。
再如图6及图7所示，当应用于折叠轮椅车100上时，所述第一支架1为后车脚，第二支架2为前车脚，所述第一支架1及第二支架2均位于所述折叠轮椅车100的两侧。两所述第一支架1的下端固定于折叠轮椅车100的后轮支架101上，两所述第二支架2的下端枢接于折叠轮椅车100的前轮支架102上。所述第一横杆3及第二横杆4位于折叠轮椅车100的下方中间，所述第一横杆3的后端枢接于后轮支架101上。所述第二横杆4的前端枢接于前轮支架102上。本实施例的所述伸缩器5为电动推杆，其枢接于后轮支架101上，且所述伸缩器5的伸缩端与所述第一横杆3枢接。
结合图1、图2、图3及图6，所述第一横杆3及第二横杆4均呈倒U型结构，所述第一横杆3的侧面上开设有一长形槽31，所述长形槽31沿所述第一横杆3的长度方向延伸；所述伸缩端设有轴销51，所述轴销51的中心轴与所述伸 缩端的中心轴垂直，所述轴销51滑动地设置于所述长形槽31内。所述折叠支架还包括限位件6，所述限位件6呈倒U型结构，所述限位件6可活动地设置于所述第一横杆3上，所述限位件6能对在所述长形槽31内的所述轴销51锁定或释锁。具体地，所述限位件6枢接于所述第一横杆3上，所述限位件6包括主体61及连接于所述主体61的限位部62，所述主体61通过一转轴枢接于与所述伸缩端枢接的横杆上，所述限位部62前侧阻挡在所述长形槽31的延伸方向上，从而可与所述长形槽31的前端共同卡持所述轴销51。所述限位部62上设有导向斜面63。在所述轴销51从所述长形槽31的另一端滑到与所述限位部62卡持的一端时，所述导向斜面63可以利用轴销51的顶推力驱使所述限位件6转动打开，从而使所述轴销51能正常滑到被所述限位部62卡持的位置。所述限位件6还包括操作手柄64，所述操作手柄64固定于所述主体61。所述操作的手柄可以在手动操作时，方便操作者打开所述限位件6。所述折叠支架还包括弹性复位件7，所述弹性复位件7为扭簧。所述弹性复位件7能驱使所述限位件6自动与所述轴销51卡持。
再请参阅图2及图3，所述第一横杆3的另一端设有第一抵触部3a，所述第二横杆4的另一端设有第二抵触部4a，所述第一横杆3与第二横杆4相互展开时，所述第一抵触部3a与所述第二抵触部4a相互抵顶。通过设置所述第一抵触部3a及第二抵触部4a，可以使所述第一横杆3及第二横杆4在完全展开时能相互制约，可以使所述折叠支架在展开时达到相对稳定的状态，并且起到一定的支撑作用。
请再参阅图4、图7及图8，当对折叠轮椅车100自动收折时，只需要控制所述伸缩器5的伸缩端伸出，此时，由于所述限位件6与所述长形槽31的前端共同锁定所述轴销51，使所述伸缩器5顶推所述第一横杆3的前端，所述第一横杆3的前端向上摆动，带动所述第二横杆4向上摆动，此时，所述第一横杆3与所述第二横杆4相互向中间靠拢，同时，所述第一横杆3的后端带动所述第一支架1围绕其上端的枢接中心转动地向中间靠拢，所述第二横杆4的前端带动所述第二支架2围绕其上端的枢接中心转动向中间靠拢。最后，所述第一横杆3、第二横杆4、第一支架1、第二支架2及伸缩器5相互靠拢在一起实现收 折。当对折叠轮椅车100自动展开时，只需要控制所述伸缩器5的伸缩端收缩，从而可以使所述第一横杆3、第二横杆4、第一支架1及第二支架2沿收折时的反方向运动，直到所述第一抵触部3a与所述第二抵触部4a相互抵顶，折叠轮椅车100即可实现完全展开。
请结合图5、图7及图8，当对折叠轮椅车100手动收折时，操作所述操作手柄64，使所述限位件6转动，进而带动所述限位部62离开所述长形槽31，即可释锁所述伸缩端的轴销51，使所述轴销51可在所述长形槽31内滑动。此时，手动使所述第一支架1及第二支架2相互靠拢，同时所述第一横杆3及第二横杆4相互靠拢，在此过程中，所述轴销51从所述长形槽31的始端滑动到末端，即可实现手动收折。当对折叠轮椅车100手动展开时，只需要手动使所述第一支架1、第二支架2、第一横杆3及第二横杆4相互展开，在此过程中，所述轴销51从所述长形槽31的末端向始端滑动，并且通过所述导向斜面63顶推所述限位部62，使限位部62向上转动而避让所述轴销51，使得所述轴销51重新进入到所述长形槽31的始端与限位部62之间，重新被所述限位部62卡持，且所述第一抵触部3a与所述第二抵触部4a相互抵顶，这时折叠轮椅车100即可完全展开
本申请通过将所述第一支架1、第二支架2、第一横杆3、第二横杆4相互枢接在一起形成一四边形支架，再在所述第一支架1和所述第一横杆3之间设置一伸缩器5，从而使折叠轮椅车100能随着所述伸缩器5的收缩或伸出而达到展开或收折的目的。并且，通过设置一限位件6，使所述限位件6呈可活动地设置，因此，当所述限位件6处于限制所述轴销51的位置时，可以使所述轴销51与第一横杆3相对固定，再利用所述伸缩器5推动横杆，使整个折叠轮椅车100能自动收折或展开。当限位件6处于释放所述轴销51的位置时，可以使所述轴销51在所述长形槽31中滑动，从而避免伸缩器5对第一横杆3的限制，使折叠轮椅车100能实现手动收折或展开，结构十分简单，使用非常方便。
以上所揭露的仅为本申请的较佳实例而已，当然不能以此来限定本申请之权利范围，因此依本申请申请专利范围所作的等同变化，仍属于本申请所涵盖的范围。

Claims (9)

  1. 一种折叠支架，其特征在于：包括第一支架、第二支架、第一横杆、第二横杆及伸缩器，所述第一支架的一端与所述第二支架的一端枢接，所述第一支架的另一端与所述第一横杆的一端枢接，所述第二支架的另一端与所述第二横杆的一端枢接，所述第一横杆的另一端与第二横杆的另一端枢接；所述伸缩器枢接于所述第一支架，且所述伸缩器的伸缩端与所述第一横杆及所述第二横杆的任一者枢接。
  2. 如权利要求1所述的折叠支架，其特征在于：与所述伸缩端枢接的横杆上开设有一长形槽，所述伸缩端设有轴销，所述轴销滑动地设置于所述长形槽内。
  3. 如权利要求2所述的折叠支架，其特征在于：所述折叠支架还包括限位件，所述限位件可活动地设置于与所述伸缩端枢接的横杆上，所述限位件能对在所述长形槽内的所述轴销锁定或释锁。
  4. 如权利要求3所述的折叠支架，其特征在于：所述限位件包括主体及连接于所述主体的限位部，所述主体枢接于与所述伸缩端枢接的横杆上，所述限位部卡持所述轴销。
  5. 如权利要求4所述的折叠支架，其特征在于：所述限位部上设有导向斜面。
  6. 如权利要求4所述的折叠支架，其特征在于：所述限位件还包括操作手柄，所述操作手柄固定于所述主体。
  7. 如权利要求3所述的折叠支架，其特征在于：所述折叠支架还包括弹性复位件，所述弹性复位件能驱使所述限位件自动与所述轴销卡持。
  8. 如权利要求7所述的折叠支架，其特征在于：所述弹性复位件为扭簧。
  9. 如权利要求1所述的折叠支架，其特征在于：所述第一横杆的另一端设有第一抵触部，所述第二横杆的另一端设有第二抵触部，所述第一横杆与第二横杆相互展开时，所述第一抵触部与所述第二抵触部相互抵顶。
PCT/CN2018/090211 2018-05-25 2018-06-07 折叠支架 WO2019223027A1 (zh)

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