ISO 7176-5:2008 車椅子 — Part 5: 寸法、質量、および操縦スペースの決定 | ページ 6

3.1

キャスターホイールのズレ

キャスターホイールの地面接触点とキャスターステムの軸が地面と交差する点where 横方向の距離

注記 1:測定は A.22 に従っています。

注記 2:ゼロ以外の値は、通常、位置ずれを示します。キャスターホイールの接地点がキャスターステム軸と地面の交点の内側にある場合、値は正であり、望ましい中立位置にある場合はゼロ、キャスターホイールの接地点がキャスターステム軸と地面の交点の外側にある場合は負です。

注記 3:正面図のスケッチ a)、b)、および c) d) 上面図。

a)シフトされたホイール

b)円錐ホイール

c)傾斜した車軸

d)斜めの車軸

3.2

fixed wheel

wheel that cannot change its axial orientation relative to the wheelchair during motion

3.3

front wheel track

distance between the ground contact points of the front wheels

Note 1 to entry: Measurement is in accordance with A.15.

Note 2 to entry: Sketch in front view.

Figure 2 — Front wheel track (example)

Key

1	front wheel track

3.4

full occupied length

distance between the most forward and most rearward point of the wheelchair including lower leg support assemblies and a reference occupant

Note 1 to entry: Measurement is in accordance with A.8.

Note 2 to entry: This measurement applies where the wheelchair has fixed leg supports and/or foot supports or where the leg supports and/or foot supports are removable but not removed.

Figure 3 — Dimensions of the wheelchair when occupied

Key

1	full occupied length
2	reduced occupied length
3	occupied width
4	occupied height

3.5

full overall length

distance between the most forward and most rearward point of the wheelchair when assembled and ready for use with any leg supports, foot supports and any anti-tipping devices fitted

Note 1 to entry: Measurement is in accordance with 8.2.

Note 2 to entry: This measurement applies where the wheelchair has fixed leg supports and/or foot supports or where the leg supports and/or foot supports are removable but not removed.

Figure 4 — Overall wheelchair dimensions

Key

1	full overall length
2	reduced overall length
3	overall width
4	overall height

3.6

ground clearance

minimum clearance between the occupied wheelchair and the ground

Note 1 to entry: Measurement is in accordance with 8.14.

Figure 5 — Ground clearance (example)

Key

1	typical critical points
2	ground clearance

^a Wheels, adjustable leg/foot supports and anti-tip devices are not considered.

3.7

ground contact point

midpoint of the area where the wheel contacts the ground

Note 1 to entry: One means of identifying the ground contact point is to place four feeler gauges of equal thickness, and with at least one straight edge, on the test plane (an example of a feeler gauge is a piece of tin or other rigid material, 0,5 mm ± 0,2 mm thick). Push two of them from the front and rear under the wheels with their straight edges horizontal and perpendicular to the wheelchair longitudinal axis and push the other two of them, from both sides, under the wheels with their straight edges parallel to the wheelchair longitudinal axis. Push all feeler gauges until they contact the wheel. The ground contact point is located in the middle of the rectangle created by the straight edges of the four feeler gauges.

Note 2 to entry: Sketch a) in side view; b) in front view; c) in 3/4 view with wheelchair removed.

Figure 6 — Identification of ground contact point

a)	b)
c)

Key

1	area of contact between wheel and ground
2	front feeler gauge
3	rear feeler gauge
4	right feeler gauge
5	left feeler gauge
6	ground contact point

3.8

handgrip height

vertical distance from the ground to the handgrip reference points of the wheelchair

Note 1 to entry: Measurement is in accordance with 8.4.

3.9

handgrip reference point

outermost lateral point at half length of the handgrip

Figure 7 — Handgrip reference point

Key

1	handgrip reference point

3.10

lateral handrim deviation

deviation of the handrim from a flat plane that is perpendicular to the axle

Note 1 to entry: Measurement is in accordance with A.7.

Note 2 to entry: Lateral handrim deviation is expressed as the difference between the position of the innermost and outermost points of the outermost continuous surface of the handrim, measured in the direction of the axis of the wheel. A non-zero value usually indicates a misalignment.

3.11

lateral wheel deviation

deviation of the rim of the wheel from a flat plane that is perpendicular to the wheel axle

Note 1 to entry: Measurement is in accordance with A.5.

Note 2 to entry: Lateral wheel deviation is expressed as the difference between the position of the innermost and outermost points of the outermost continuous surface of the rim of the wheel, measured in the direction of the axis of the wheel. A non-zero value usually indicates a misalignment.

3.12

mass of heaviest part

mass of the heaviest part (or assembly of parts) of the wheelchair when dismantled for transport or stowing purposes

Note 1 to entry: Measurement is in accordance with 8.10.

3.13

movable wheel

wheel that can change its axial orientation relative to the wheelchair during motion

EXAMPLE:

Pivot wheel, pivot drive wheel or castor wheel.

Figure 8 — Some wheels with lateral wheel deviation

a)wheel with skew axle

b)wheel with lateral bump

c)uneven wheel

3.14

occupied height

vertical distance from the test plane to the uppermost point of the head of a reference occupant

Note 1 to entry: Measurement is in accordance with A.11.

Note 2 to entry: The occupied height measurement takes the presence of a seat cushion into account.

3.15

occupied width

horizontal distance across the wheelchair including a reference occupant

Note 1 to entry: Measurement is in accordance with A.10.

Note 2 to entry: Occupied width includes the hands of the occupant if the wheelchair has handrims.

3.16

pivot width

minimum distance between two vertical and parallel walls between which a wheelchair with full differential steering can turn through 180° with one single and continuous turning manoeuvre

Note 1 to entry: Measurement is in accordance with 8.11.

Figure 9 — Pivot width

Key

1	pivot width

3.17

radial handrim deviation

deviation of the handrim from a true circle that is concentric to the axle

Note 1 to entry: Measurement is in accordance with A.6.

Note 2 to entry: Radial handrim deviation is expressed as the difference between the longest and the shortest outer radius of each handrim. A non-zero value usually indicates a misalignment.

3.18

radial wheel deviation

deviation of the outer circumference of the wheel from a true circle that is concentric to the axle

Note 1 to entry: Measurement is in accordance with A.4.

Note 2 to entry: Radial wheel deviation is expressed as the difference between the longest and the shortest radius of the wheel. A non-zero value usually indicates a misalignment.

Figure 10 — Some wheels with radial wheel deviation

a)eccentric wheel

b)wheel with flat part

c)wheel with bump

d)elliptical wheel

3.19

ramp transition angle

angle between ramp and horizontal on which the transition to level ground can be negotiated without contacting the ramp or the ground with any part other than the wheels

Note 1 to entry: Measurement is in accordance with A.12.

Note 2 to entry: Ramp transition angle concerns the smallest of the three angles achieved when driving over a transition between level ground and a ramp:

a)front parts at the lower transition

b)rear parts at the lower transition

c)parts located between the wheels at the upper transition

3.20

rear wheel track

distance between the ground contact points of the rear wheel

Note 1 to entry: Measurement is in accordance with A.14.

Note 2 to entry: Sketch is a rear view.

Figure 12 — Rear wheel track (example)

Key

1	rear wheel track

3.21

reduced occupied length

distance between the most forward and most rearward point of the wheelchair without lower leg support assemblies but including a reference occupant

Note 1 to entry: Measurement is in accordance with A.9.

Note 2 to entry: This measurement applies where the wheelchair is delivered without leg supports and/or foot supports or where the leg supports and/or foot supports are removable and removed.

3.22

reduced overall length

distance between the most forward and the most rearward point of the wheelchair when assembled and ready for use without lower leg support assemblies

Note 1 to entry: Measurement is in accordance with A.2.

Note 2 to entry: This measurement applies where the wheelchair is delivered without leg supports and/or foot supports or where the leg supports and/or foot supports are removable and removed.

3.23

required corridor width for side opening

minimum width of a corridor necessary to permit the wheelchair to move forwards into or out of the corridor through an open doorway of defined width in one wall

Note 1 to entry: Measurement is in accordance with 8.17.

Figure 13 — Required corridor width for side opening

a)exiting

b)entering

Key

1	800 mm wide side opening
2	required corridor width for side opening when exiting
3	required corridor width for side opening when entering

3.24

required doorway entry depth

minimum distance between the wall containing the door and the most remote point of the wheelchair when opening an 800 mm wide door that is located 600 mm from the side wall

Note 1 to entry: Measurement is in accordance with 8.16.

Figure 14 — Required doorway entry depth

Key

1	800 mm wide door opening
2	600 mm side distance
3	required doorway entry depth

3.25

required width of angled corridor

minimum width of a corridor with a right angled turn in which the wheelchair can be driven in both forward and rearward directions

Note 1 to entry: Measurement is in accordance with 8.15.

Figure 15 — Required width of angled corridor

Key:

1	required width of angled corridor

3.26

reversing width

minimum distance between two vertical and parallel walls between which the wheelchair with direct steering or limited differential steering can turn through 180° with one initial forward drive, one rearward drive and one final forward drive (i.e. a three-point turn)

Note 1 to entry: Measurement is in accordance with 8.12.

Figure 16 — Reversing width (example with scooter)

Key

1	reversing width

3.27

rising

distance between the ground and the lowermost point of the front wheels when the anti-tip devices are in contact with the ground

Note 1 to entry: Measurement is in accordance with 8.8.

Figure 17 — Rising

Key

1	anti-tip device contacting the ground
2	rising

3.28

skew

relative position of a pair of fixed wheels ここで, one wheel is ahead of the other

Note 1 to entry: Measurement is in accordance with A.18.

3.29

wheel median line

imaginary circle, having the same diameter as a wheel, which passes through the ground contact point of the wheel as the wheel is rotated

Note 1 to entry: If the wheel is a torus, the wheel median line runs around the wheel at its greatest diameter. If the wheel is a cylinder, the wheel median line is at the half width of the surface. In case of a twin wheel, the wheel median line is in the middle of the two wheels (on the same hub).

Figure 19 — Wheel median line

a)wheel median lineof a torus wheel

b)wheel median line of a cylindrical wheel

c)wheel median line of a twin wheel

3.30

wheelbase

longitudinal distance between the ground contact points of the front and rear wheels with any castor wheels in the forward trailing position

Note 1 to entry: Measurement is in accordance with A.13.

Note 2 to entry: Sketch is a side view.

Figure 20 — Wheelbase

Key

1

wheelbase

3.31

wheelchair centre-point

midpoint of the line between the centres of the fixed wheels

Note 1 to entry: If there is only one fixed wheel, the wheelchair centre-point is at the midpoint of that wheel; if there is more than one axis with fixed wheels, the wheelchair centre-point is on the axis with the larger wheel diameters; if all fixed wheels have the same diameter, the wheelchair centre-point is on the axis that bears the higher proportion of load of the occupied wheelchair.

Figure 21 — Wheelchair centre-point and wheelchair longitudinal axis

Key

1	centre of fixed wheel
2	wheelchair centre-point

^a Wheelchair longitudinal axis.

3.32

wheelchair longitudinal axis

imaginary horizontal line through the wheelchair centre-point, running in the direction of straight forward/rearward travel