ISO 4210-1:2014 サイクル—自転車の安全要件—パート1：用語と定義 | ページ 5

2.1

aerodynamic extension

extension (or extensions) secured to the handlebar or stem, to improve the rider’s aerodynamic posture

2.2

band brake

brake in which a circumferential band is wrapped around the exterior of a cylindrical drum which is attached to or incorporated in the wheel-hub

2.3

bar end

extension secured to the end of a handlebar to provide an additional hand grip and usually with its axis perpendicular to the axis of the end of the handlebar

2.4

bicycle

two-wheeled vehicle that is propelled solely or mainly by the muscular energy of the person on that vehicle, in particular by means of pedals

2.5

bolted joint

components joined together with threaded fasteners

2.6

brake lever

lever that operates a braking device

2.7

braking distance

distance travelled by a bicycle between the commencement of braking (2.10) and the point at which the bicycle comes to rest

2.8

braking force

F_br

tangential rearward force between the tyre and the ground, or the tyre and the drum or belt of the test machine

2.9

city and trekking bicycle

bicycle designed for use on public roads primarily for means of transportation or leisure

2.10

commencement of braking

point on the test track or test machine at which the brake-actuating device operated directly by the rider’s hand or foot or by a test mechanism starts to move from its rest position

Note 1 to entry: On the test track, this point is determined by the first brake-actuating device (front or rear) to operate.

2.11

composite material

component that is entirely or partially made of a non-metallic matrix materials which is reinforced by metallic or non-metallic materials such as short or long fibres, fabric, or particles

2.12

composite wheels

wheel assembly containing any composite material

2.13

crank assembly

assembly for fatigue testing consisting of the drive side and the non-drive side crank arm, the pedal-spindle adaptors, the bottom-bracket spindle, and the first component of the drive system

2.14

delivery bicycle

bicycle designed for the primary purpose of carrying goods

2.15

disc brake

brake in which pads are used to grip the lateral faces of a thin disc attached to or incorporated in the wheel hub

2.16

drive belt

seamless ring belt which is used as a means of transmitting motive force

2.17

exposed protrusion

protrusion which, through its location and rigidity, could present a hazard to the rider either through heavy contact with it in normal use or should the rider fall onto it in an accident

2.18

dummy fork

test fork manufactured to specific characteristics which can be substituted within a test for either the fork supplied by the manufacturer or where a fork has not been supplied

2.19

folding bicycle

bicycle designed to fold into a compact form, facilitating transport and storage

2.20

fracture

unintentional separation into two or more parts

2.21

fork steerer (fork stem)

part of a fork that rotates about the steering axis of a bicycle frame head tube

Note 1 to entry: It is normally connected to the fork crown or directly to the fork legs and is normally the point of connection between the fork and the handlebar stem.

2.22

fully assembled bicycle

bicycle fitted with all components necessary for its intended use

2.23

highest gear

gear ratio which gives the greatest distance travelled for one rotation of the cranks

2.24

hub brake

brake which acts directly on the wheel hub

2.25

hub generator

electric generating device built in the wheel hub

2.26

lowest gear

gear ratio which gives the shortest distance travelled for one rotation of the cranks

2.27

maximum inflation pressure

maximum tyre pressure recommended by the tyre or rim manufacturer for a safe and efficient performance

Note 1 to entry: If the rim and tyre both indicate a maximum inflation pressure, the maximum inflation pressure is the lower of the two pressures indicated.

2.28

maximum saddle height

vertical distance from the ground to the point where the top of the seat surface is intersected by the seat-post axis, measured with the seat in a horizontal position and with the seat-post set to the minimum insertion-depth mark

2.29

minimum insertion-depth mark

mark indicating the minimum insertion-depth of handlebar stem into fork steerer (fork stem) or seat-post into frame

2.30

mountain bicycle

bicycle designed for use off-road on rough terrain, on public roads, and on public pathways, equipped with a suitably strengthened frame and other components, and, typically, with wide-section tyres with coarse tread patterns and a wide range of transmission gears

2.31

off-road rough terrain

coarse pebble tracks, forest trails, and other general off-road tracks where tree roots and rocks are likely to be encountered

2.32

pedal tread surface

surface of a pedal that is presented to the underside of the foot

2.33

primary retention system

system that keeps the front/rear wheel securely attached to the frame/fork dropouts while riding

2.34

public pathway

any designated and adopted road, path, or track on which a bicycle is legally permitted to travel where motorized traffic is excluded

2.35

public road

any designated and adopted road, pavement, path, or track on which a bicycle is legally permitted to travel and, on most though not all such public roads, bicycles will share use with other forms of transport including motorized traffic

2.36

pulley

rotating wheel mounted on an axle that contains, around its circumference, teeth or grooves over which a belt can pass to transmit power

2.37

quick-release device

lever actuated mechanism that connects, retains, or secures a wheel or any other component

2.38

quick-release pedal (clip-less pedal)

pedal that contains a device for the attachment of a rider’s foot/shoe that can be released by foot movement alone

2.39

racing bicycle

bicycle intended for high-speed amateur use on public roads and having a steering assembly with multiple grip positions (allowing for an aerodynamic posture), a multi-speed transmission system, tyre width not greater than 28 mm, and a maximum mass of 12 kg for the fully assembled bicycle

2.40

recumbent bicycle

bicycle that places the rider in a laid-back reclining position

2.41

rim-brake

brake in which brake shoes act on the rim of the wheel

2.42

screw thread locking devices

devices attached or applied to the threads of a nut or bolt, so that they do not unintentionally become unlocked

2.43

seat-post

component that clamps the saddle (with a bolt or assembly) and connects it with the frame

2.44

secondary retention system

system that retains the front wheel in the fork dropouts when the primary retention system is in the open (unlocked) position

2.45

simulated ground plane

plane used to orient a test part or assembly in a way that represents the cycles alignment to the ground in a fully assembled cycle

2.46

suspension fork

front fork incorporating controlled, axial flexibility to reduce the transmission of road shocks to the rider

2.47

suspension frame

frame incorporating controlled, vertical flexibility to reduce the transmission of road shocks to the rider

2.48

tandem

bicycle with saddles for two or more riders, one behind the other

2.49

toe clip

device attached to the pedal to grip the toe end of the rider's shoe but permitting withdrawal of the shoe

2.50

visible crack

crack which results from a test, wherein that crack is visible to the naked eye

2.51

wheel

assembly or combination of hub, spokes or disc, and rim, but excluding the tyre assembly

2.52

wheelbase

distance between the axes of the front and rear wheels of an unladen bicycle

2.53

young adult bicycle

bicycle designed for use on public roads by a young adult whose weight is less than 40 kg, with maximum saddle height of 635 mm or more and less than 750 mm