GB2412060A - Angular adjustment device for motorised wheelchair seat - Google Patents

Angular adjustment device for motorised wheelchair seat Download PDF

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Publication number
GB2412060A
GB2412060A GB0406127A GB0406127A GB2412060A GB 2412060 A GB2412060 A GB 2412060A GB 0406127 A GB0406127 A GB 0406127A GB 0406127 A GB0406127 A GB 0406127A GB 2412060 A GB2412060 A GB 2412060A
Authority
GB
United Kingdom
Prior art keywords
seat
base
plate
adjusting device
angle
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.)
Withdrawn
Application number
GB0406127A
Other versions
GB0406127D0 (en
Inventor
Samuel Lin
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.)
Sunpex Technology Co Ltd
Original Assignee
Sunpex Technology 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 Sunpex Technology Co Ltd filed Critical Sunpex Technology Co Ltd
Priority to GB0406127A priority Critical patent/GB2412060A/en
Publication of GB0406127D0 publication Critical patent/GB0406127D0/en
Publication of GB2412060A publication Critical patent/GB2412060A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/38—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
    • B60N2/39—Seats tiltable to compensate for roll inclination of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B62J1/08—Frames for saddles; Connections between saddle frames and seat pillars; Seat pillars
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Seats For Vehicles (AREA)

Abstract

A motorised wheelchair / invalid carriage (1 fig 1) has a seat (13 fig 1) affixed to an adjusting device (2 fig 1), the adjusting device being affixed to a column member / seat post (12). The adjusting device has a base (3) mounted on the upper end of the column. A seat plate (6) is pivotally connected to the base and is connected to the bottom surface of seat (13 fig 1). An adjusting unit (4 and 5) is located on the base and is used to alter the angle of the seat plate with respect to the base. Actuation of the adjusting unit may be via a handwheel (45) connected to a captive threaded leadscrew (44). The leadscrew may thus engage with nut (52) part of a sliding linkage (5) connected to pivoting links (62). Rotation of handwheel may thus cause the nut and hence sliding linkage to move in a longitudinal direction causing the links to rise or fall and hence the seat base to pivot about a horizontal axis. A locking means may be provided.

Description

24 1 2060
SEAT ANGLE-ADJUSTING DEVICE FOR A MOTOR VEHICLE
This invention relates to a seat angle-adjusting device, and more particularly to a seat angle-adjusting device for a motor vehicle suitable for a disabled driver.
A conventional motor vehicle is designed for a disabled driver, and includes a vehicle frame, a seat post fixed on the vehicle frame, and a seat member mounted fixedly on an upper end of the seat post. Because the angle of the seat member cannot be adjusted relative to the seat post, discomfort of the driver is incurred.
Therefore, the object of this invention is to provide a seat angleadjusting device for a motor vehicle.
According to this invention, a seat angle-adjusting device for a motor vehicle is provided. The motor vehicle includes a vehicle frame, an upright seat post fixed on the vehicle frame, and a seat member disposed on the seat post. The seat angle-adjusting device includes a base mounted fixedly on an upper end of the seat post, a seat plate mounted swingably on the base and connected fixedly to a bottom surface of the seat member, and an adjusting unit disposed on the base and operable to swing the seat plate on the base so as to adjust the angle of the seat member relative to the base.
These and other features and advantages of this invention will become apparent in the following detailed description of a preferred embodiment of this invention, with reference to the accompanying drawings, in which: Fig. 1 is a partly exploded perspective view of a motor vehicle that is provided with the preferred embodiment of a seat angle-adjusting device according to this invention; Fig. 2 is an exploded perspective view of the preferred embodiment; Fig. 3 is a sectional side view of the preferred embodiment; Fig. 4 is a sectional side view of the preferred embodiment, illustrating how the angle of a seat member is adjusted; and Fig. 5 is a fragmentary sectional view of the preferred embodiment, illustrating how a seat plate is locked releasably on a base.
Referring to Figs. 1, 2, and3, the preferred embodiment of a seat angleadjusting device 2 according to this invention is disposed on a motor vehicle suitable for a disabled driver. The motor vehicle includes a vehicle frame 11, an upright seat post 12 fixed on the vehicle frame 11, a seat member 13 disposed on the seat post 12, and a positioning unit 14. The seat angle-adjusting device 2 includes a base 3, an adjusting unit 4, a sliding seat 5, a seat plate assembly 6, and a locking unit 7.
The base 3 includes a bottom wall 31, a tube 32 disposed fixedly on the bottom wall 31 and sleeved fixedly on an upper end of the seat post 12, two pivotal plates 33 extending respectivelyandupwardlyfromtwo opposite sides of the bottom wall 31, two L-shaped guide plates 34 fixed on a top surface of the bottom wall 31, and a vertical stop plate 35 fixed on rear ends of the guide plates 34. The base 3 is locked on the seat post 12 by the positioning unit 14 in a known manner. The positioning unit 14 can be operated to permit rotation of the base 3 about the seat post 12. Because the specific structure of the positioning unit 14 is known in the art, and is not pertinent to the claimed invention, a detailed description thereof will be omitted herein for the sake of brevity.
The adjusting unit 4 consists of a vertical mounting plate 41 and an adjusting mechanism 42, which includes a vertical positioning plate 43, a threaded rod 44 journalled on the base 3 and engaging threadably the sliding seat 5 so that rotation of the threaded rod 44 on the base 3 can IS cause the sliding seat 5 to move frontwardly and rearwardly on the base 3, and a handgrip 45. The mounting plate 41 is mounted fixedly to a front end of the base 3 for extension of the threaded rod 44 therethrough. The positioning plate 43 is connected fixedly to the mounting plate 41, and has a top side that is formed with a notch 431. The threaded rod 44 extends through the mounting plate 41, and has a non-threaded portion 441 disposed in front of the mounting plate 41, an annular groove to define a thinner rod portion 442 received fittingly and rotatably within the notch 431 in the positioning plate 43 so as to prevent movement of the threaded rod 44 relative to the positioning plate 43 and the base 3, and a threaded portion 443 disposed behind the mounting plate 43. The handgrip 45 is connected threadedly to the non-threaded portion 441 of the threaded rod 44.
The sliding seat 5 includes a horizontal base plate 51 S slidable frontwardly and rearwardly on and between the guide plates 34 of the base 3, a fixed pushing block 52 with a threaded hole 521 engaging the threaded portion 443 of the threaded rod 44, and two brackets 53 fixed respectively on two opposite side portions of a top surface of the base plate 51. The vertical stop plate 35 of the base 3 defines a rear limit position of the sliding seat 5, where a rear end of the sliding seat 5 abuts against the stop plate 35.
The seat plate assembly 6 includes a seat plate 61 connected fixedly to a bottom surface of the seat member 13, and two inclined supporting members 62. The seat plate 61 includes a base wall 611, two upright walls 612 extending respectively and downwardly from the base wall 611 and connected respectively and pivotally to the pivotal plates 33 of the base 3, two brackets 613 fixed on a top surface of the base wall 611, and two pivot bolts 614 each extending through a respective one of the upright walls 612 and a respective one of the pivotal plates 33 of the base 3 so as to permit swinging movement of the seat plate 61 about the pivot bolts 614. The base wall 611 is formed with a circular hole 615 therethrough. The tube 32 of the base 3 extends through the circular hole 615 in the base wall 611. The right upright wall 612 is formed with a slide slot 616 therethrough. The supporting members 62 extend through the seat plate 61, and have front lower ends connected respectively and pivotally to the brackets 53 of the sliding seat 5, and rear upper ends connected respectively and pivotally to the brackets 613 of the seat plate 61. When the threaded rod 44 is actuated so that the sliding seat 5 moves rearwardly on the base 3 from the position shown in Fig. 3 to that shown in Fig. 4, the front end of the seat plate 61 turns upwardly relative to the base 3. When the sliding seat 5 moves frontwardly on the base 3 from the position shown in Fig. 4 to that shown in Fig. 3, the front end of the seat plate 61 turns downwardly relative to the base 3.
Referring to Figs. 1, 2, and 5, the locking unit 7 interconnects the base 3 and the seat plate 61 so as to lock the seat plate61releasablyon the tease 3. Thelocking unit 7 includes an adjustment bolt 71, a nut 72, end a washer 73. The nut 72 is welded to the right pivotal plate 33 of the base 3. The adjustment bolt 71 extends through the washer 73, the slide slot 616 in the right upright wall 612 of the seat plate 61, and a hole 331 in the right pivotal plate 33 of the base 3, and engages the nut 72 so as to clamp the right upright wall 612 and the right pivotal plate 33 between the washer 73 and the nut 72, thereby locking the seat plate 61 on the base 3.

Claims (12)

  1. CLAIMS: 1. A seat angle-adjusting device for a motor vehicle, the
    motorvehicle including a vehicle frame, en upright seat post fixed on the vehicle frame, and a seat member disposed on the seat post, the seat angle- adjusting device including: a base mounted fixedly on an upper end of the seat post; a seat plate mounted swingably on the base and connected fixedly to a bottom surface of the seat member; and an adjusting unit disposed on the base and operable to swing the seat plate on the base so as to adjust the angle of the seat member relative to the base.
  2. 2. The seat angle-adjusting device as claimed in Claim 1, further including a sliding seat disposed movably on the base and movable frontwardly and rearwardly on the base to swing the seat plate on the base upon actuation of the adjusting unit.
  3. 3. The seat angle-adjusting device as claimed in Claim 2, further including two inclined supporting members, each of which has a front lower end connected pivotally to the sliding seat, and a rear upper end connected pivotally to a front end of the seat plate, frontward movement of the sliding seat on the base resulting in downward turning of the front end of the seat plate, rearward movement of the sliding seat on the base resulting in upward turning of the front end of the seat plate.
  4. 4. The seat angle-adjusting device as claimed in Claim 3, wherein the adjusting unit includes a threaded rod journalled on the base and engaging threadably the sliding seat so that rotation of the threaded rod on the base can cause the sliding seat to move frontwardly and rearwardly on the base.
  5. 5. The seat angle-adjusting device as claimed in Claim 4, wherein the adjusting unit further includes a vertical mounting plate mounted fixedly to a front end of the base for extension of the threaded rod therethrough, and a vertical positioning plate connected fixedly to the mounting plate and having a top side that is formed with a notch, the threaded rod extending through the mounting plate and having a non-threaded portion disposed in front of the mounting plate, an annular groove to define a thinner rod portion received fittingly and rotatably within the notch in the positioning plate so as to prevent movement of the threaded rod relative to the positioning plate, and a threaded portion disposed behind the mounting plate, the sliding seat including a fixed pushing block that is formed with a threaded hole which engages the threaded portion of the threaded rod.
  6. 6. The seat angle-adjusting device as claimed in Claim 3, wherein the base includes a bottom wall, a tube disposed fixedly on the bottom wall and sleeved fixedly on the seat post, and two pivotal plates extending respectively and upwardly from two opposite sides of the bottom wall, the seat plate including a base wall, and two upright walls extending respectively and downwardly from the base wall and connected respectively and pivotally to the pivotal plates of the base.
  7. 7. The seat angle-adjusting device as claimed in Claim 6, wherein the sliding seat includes a horizontal base plate and two brackets fixed respectively on two opposite side portions of a top surface of the tease plate, the base wall of the seat plate including two brackets fixed on a top surface thereof, the front lower ends of the supporting members being connected pivotally to the brackets of the sliding seat, the rear upper ends of the supporting members being connected pivotally to the brackets of the base wall of the seat plate.
  8. 8. The seat angle-adjusting device as claimed in Claim 1, further including a locking unit that interconnects the base and the seat plate so as to lock the seat plate releasably on the base.
  9. 9. The seat angle-adjusting device as claimed in Claim 6, wherein one of the pivotal plates of the base is formed with a hole therethrough, one of the upright walls of the seat plate being formed with a slide slot therethrough, the seat angle-adjusting device further including a locking unit that extends through said hole in the one of the pivotal plates and the slide slot in the one of the upright walls of the seat plate so as to lock the seat plate releasably on the base.
    S
  10. lO.The seat angle-adjusting device as claimed in Claim 9, wherein the locking unit includes an adjustment bolt, a nut, and a washer, the nut being connected fixedly to the one of the pivotal plates of the base, the adjustment bolt extending through the washer, the slide slot in the one of the upright walls of the seat plate, and the hole in the one of the pivotal plates of the base and engaging the nut so as to clamp the one of the upright walls of the seat plate end the one of the pivotal plates of the base between the washer and the nut, thereby locking the seat plate on the base.
  11. ll.The seat angle-adjusting device as claimed in Claim 6 or 9, wherein the base further includes two L-shaped guide plates fixed on a top surface of the bottom wall so as to guide the sliding seat to move frontwardly and rearwardly on the base, and a vertical stop plate fixed on rear ends of the guide plates so as to define a rear limit position of the sliding seat, where a rear end of the sliding seat abuts against the stop plate.
  12. 12. A seat angle-adjusting device substantially as hereinbefore described with reference to and as illustrated in Figures 1 to 5 of the accompanying drawings.
GB0406127A 2004-03-18 2004-03-18 Angular adjustment device for motorised wheelchair seat Withdrawn GB2412060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0406127A GB2412060A (en) 2004-03-18 2004-03-18 Angular adjustment device for motorised wheelchair seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0406127A GB2412060A (en) 2004-03-18 2004-03-18 Angular adjustment device for motorised wheelchair seat

Publications (2)

Publication Number Publication Date
GB0406127D0 GB0406127D0 (en) 2004-04-21
GB2412060A true GB2412060A (en) 2005-09-21

Family

ID=32117972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0406127A Withdrawn GB2412060A (en) 2004-03-18 2004-03-18 Angular adjustment device for motorised wheelchair seat

Country Status (1)

Country Link
GB (1) GB2412060A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572818A (en) * 1969-07-22 1971-03-30 Allied Chem Vehicle seat construction and arrangement
GB1346060A (en) * 1970-12-01 1974-02-06 Secr Defence Aircraft seats
GB1603733A (en) * 1977-04-07 1981-11-25 Hammerstein Gmbh C Rob Device for the adjustment of a vehicle seat
US4561621A (en) * 1983-08-17 1985-12-31 Milsco Manufacturing Company Tiltable vehicle seat for backhoes or the like
US4616874A (en) * 1983-06-01 1986-10-14 Gebr. Isringhausen Vehicle seat assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572818A (en) * 1969-07-22 1971-03-30 Allied Chem Vehicle seat construction and arrangement
GB1346060A (en) * 1970-12-01 1974-02-06 Secr Defence Aircraft seats
GB1603733A (en) * 1977-04-07 1981-11-25 Hammerstein Gmbh C Rob Device for the adjustment of a vehicle seat
US4616874A (en) * 1983-06-01 1986-10-14 Gebr. Isringhausen Vehicle seat assembly
US4561621A (en) * 1983-08-17 1985-12-31 Milsco Manufacturing Company Tiltable vehicle seat for backhoes or the like

Also Published As

Publication number Publication date
GB0406127D0 (en) 2004-04-21

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)