IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0266306
(2005-11-04)
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등록번호 |
US-7562896
(2009-07-29)
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발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
A body frame (10) for a wheelchair includes a main frame (11), a back frame (12) and a seat frame (13). The body frame (10) includes hinge structures (31), (38), (53) and (56) for causing the user of a wheelchair to lie down, and cross braces (15) and (16) for implementing the fold of the wheelchai
A body frame (10) for a wheelchair includes a main frame (11), a back frame (12) and a seat frame (13). The body frame (10) includes hinge structures (31), (38), (53) and (56) for causing the user of a wheelchair to lie down, and cross braces (15) and (16) for implementing the fold of the wheelchair. The hinge structures (31), (38), (53) and (56) are provided so that the main frame (11) and the seat frame (13) are divided in a longitudinal direction. The center of each of the hinge structures (31), (38), (53) and (56) is present on an identical virtual axis in a transverse direction. The cross braces (15) and (16) are disposed before each of the hinge structures (31), (38), (53) and (56).
대표청구항
▼
What is claimed is: 1. A body frame for a wheelchair comprising: a main frame having a pair of upper bones provided opposite to each other in a transverse direction and extended in a longitudinal direction and a pair of lower bones provided in parallel with the upper bones below the upper bones; a
What is claimed is: 1. A body frame for a wheelchair comprising: a main frame having a pair of upper bones provided opposite to each other in a transverse direction and extended in a longitudinal direction and a pair of lower bones provided in parallel with the upper bones below the upper bones; a seat frame having a pair of seat rails provided along the upper bones and constituting a seat by an attachment of a seat member; a back frame having a pair of back rails provided on rear ends of the upper bones and constituting a back by an attachment of the seat member; a cross brace including a pair of cross members, one of the cross members having a pair of ends, one of the ends coupled to a predetermined portion of one of the seat rails and the other end coupled to a predetermined portion of one of the lower bones and the other cross member having a pair of ends, one of the ends coupled to a predetermined portion of the other seat rail and the other end coupled to a predetermined portion of the other lower bone, the mutual cross members being coupled rotatably in centers thereof and being thus formed like X; and a support structure for supporting the seat frame with respect to the main frame in order to maintain a positional relationship of the seat frame with the main frame, each of the upper bones being divided into a fore upper bone and a hind upper bone and the hind upper bone being coupled to the fore upper bone through a first hinge structure in order to be freely inclined to the fore upper bone, each of the seat rails being divided into a fore seat rail and a hind seat rail and the hind seat rail being coupled to the fore seat rail through a second hinge structure in order to be freely inclined to the fore seat rail, and the cross brace being disposed before both the first hinge structure and the second hinge structure. 2. The body frame for a wheelchair according to claim 1, wherein the first hinge structure includes a front block provided on a rear end of the fore upper bone, a back block provided on a front end of the hind upper bone, and a coupling pin for coupling both of them, an engagement shaft portion protruded along a rotating axis of the hind upper bone is formed on either the front block or the back block, an engagement dent is provided along the rotating axis on either the remaining front block or the remaining back block, and the engagement shaft portion is fitted in the engagement dent in a rotatable state in a direction of the rotating axis. 3. The body frame for a wheelchair according to claim 2, wherein the front block and the back block are coupled to each other like a shiplap along the rotating axis. 4. The body frame for a wheelchair according to claim 1, wherein a rotating axis of the first hinge structure is coincident with that of the second hinge structure. 5. The body frame for a wheelchair according to claim 1, wherein the support structure has: a coupling pipe provided in a vertical direction and coupled to the lower bone; and a coupling rod inserted through the coupling pipe and coupled to the seat rail at an upper end thereof. 6. The body frame for a wheelchair according to claim 1, wherein a portion of the seat rail to be coupled to the cross brace includes an inserting pipe and an inserted rod to be inserted through the inserting pipe, and the inserting pipe is constituted to be rotated around an axis of the inserted rod. 7. A body frame for a wheelchair comprising: a main frame having a pair of upper bones provided opposite to each other in a transverse direction and extended in a longitudinal direction and a pair of lower bones provided in parallel with the upper bones below the upper bones; a seat frame having a pair of seat rails provided along a forward part of the upper bones and constituting a forward part of a seat by an attachment of a seat member; a back frame having a pair of back rails provided on rear ends of the upper bones and constituting a back by an attachment of a seat member; a cross brace including a pair of cross members, one of the cross members having a pair of ends, one of the ends coupled to a predetermined portion of one of the seat rails and the other end coupled to a predetermined portion of one of the lower bones and the other cross member having a pair of ends, one of the ends coupled to a predetermined portion of the other seat rail and the other end coupled to a predetermined portion of the other lower bone, the mutual cross members being coupled rotatably in centers thereof and being thus formed like X; and a support structure for supporting the seat frame with respect to the main frame in order to maintain a positional relationship of the seat frame with the main frame, each of the upper bones being divided into a fore upper bone constituting the forward part of the upper bone and a hind upper bone constituting a rear part of the seat by an attachment of a seat member, and the hind upper bone being coupled to the fore upper bone through a hinge structure in order to be freely inclined to the fore upper bone, and the cross brace being disposed before the hinge structure. 8. The body frame for a wheelchair according to claim 7, wherein the hinge structure includes a front block provided on a rear end of the fore upper bone, a back block provided on a front end of the hind upper bone, and a coupling pin for coupling both of them, an engagement shaft portion protruded along a rotating axis of the hind upper bone is formed on either the front block or the back block, an engagement dent is provided along the rotating axis on either the remaining front block or the remaining back block, and the engagement shaft portion is fitted in the engagement dent in a rotatable state in a direction of the rotating axis. 9. The body frame for a wheelchair according to claim 8, wherein the front block and the back block are coupled to each other like a shiplap along the rotating axis. 10. The body frame for a wheelchair according to claim 7, wherein the support structure includes a first coupling rod for coupling a middle part of one of the cross members to the main frame, and a second coupling rod for coupling a middle part of the other cross member to the main frame, and both ends of each of the coupling rods are rotatably coupled to each of the cross members and the main frame.
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