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1、JAPANESE INDUSTRIAL STANDARD JIS T 8133: 2000 Protective helmets for drivers and passengers of motorcycle and mopeds February, 2002 ERRATA Page 5 5.2.1 line 1 Error: Correct: Page 41 7.1.4 line 2 Error: Correct: approximately 150 m2 the square of approximately 150 m specified in 1 and 4 specified in
2、 5.1 and 5.4 Remarks: This erratum is for correcting the first edition of this Standard. Japanese Standards Association - 5 - _ STD-JIS T 8133-ENGL 2000 = 4933606 0570594 332 JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association Protective helmets for drivers and
3、 passengers of motorcycle and mopeds ICs 13.340.20 Descriptors : helmets (protective), safety devices, vehicle users helmets, cyclists helmets, motor cyclists helmets, motor car users helmets Reference number : JIS T 8133 : 2000 (E) 24 S - - STD=JIS T 8133-ENGL 2000 4933608 0570595 279 M T 8133 : 20
4、00 Foreword T h i s translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently JIS T
5、8133 : 1997 is replaced with JIS T 8133 : 2000. Date of Establishment: 1970-11-01 Date of Revision: 2000-03-20 Date of Public Notice in Oficial Gazette: 2000-03-21 Investigated by: Japanese Industrial Standards Committee Divisional Council on Medical and Safety JIS T 8133 : 2000, First English editi
6、on published in 2001-04 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA2001 Ail rights reserved. Unless otherwise specified, no pa
7、rt of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan STD.JIS T BL33-ENGL 2000 4933608 0570596 LO5 JAPANESE INDUSTRIAL STANDARD JIS T 8133 :
8、2000 Protective helmets for drivers and passengers of motorcycle and mopeds 1 Scope This Japanese Industrial Standard specifies the protective helmets for drivers and the passengers riding together of motorcycle and mopeds with or with- out side car (hereafter referred to as “protective helmets”). R
9、emarks : Half type protective helmets and three quarters type protective hel- mets are specified in Annex 4. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. The most recent edi- tions of these standards
10、are valid. JIS D 1050 Road vehicles-Techniques of measurement in impact tests-Instru- mentation JIS G 3101 Rolled steels for general structure JIS G 4401 Carbon tool steels 3 Definitions For the purpose of this Standard, the following definitions apply: protective helmet The helmet the main purpose
11、of which is to protect the head of user from impact. A certain type of the protective helmet gives addi- tional protection. shell The rigid part which provides the general form of the helmet. anti-concussion liner Material for absorbing impact energy. interior cushion Material for giving comfortable
12、 service to the wearer. supporting device A device for keeping the helmet in an appropriate posi- tion on the head. It may contain a part for regulating the device or improving its fitness. 1) chin strap One of the parts of supporting device for keeping device which consists of the straps passing un
13、der the chin of the wearer for keeping the helmet in an appropriate position. 2) chin cup One of the accessories to the chin strap which is manufactured chin guard A removable or permanent part of the protective helmet for cov- ering the lower part of the face. peak An extension of the shell above t
14、he eyes. shield A transparent plane for protection by covering a part of the face in front of the eyes. goggles Transparent protective parts enveloping the eyes. base plane of head A plane which includes the line under the earholes and eye sockets. adjusting to the form of the wearers chin. -,-,- ST
15、D-JIS T 8133-ENGL 2000 M 4933608 0570597 041 = 2 T 8133 : 2000 k) base plane of headform A plane on the headform which corresponds to the base plane of the head. reference plane A plane for drawing which is parallel to the base plane of the headform and is specified a certain distance apart from the
16、 base plane ac- cording to the size of the headform. 1) m) vertical center axis A straight line of the head, headform or safety helmet which is so specified as to be passing the point equally distant from the front head and the back head on the reference plane of a conforming headform, be perpendicu
17、lar to the base plane and be on the symmetric center plane. n) vertical central longitudinal section (central sagittal plane) A vertical symmetric center plane of the head, the headform or the protective helmet to be put on which passes the vertical center axis. size of headform The size of the refe
18、rence headforms specified in Annex 2 and Annex 3. o) p) type of safety helmet A range covering the protective helmets of the same brand or the name of the brand which there is no fundamental difference con- cerning, in particular, shell, supporting device or material for anti-concussion liner, or di
19、mensions. Nevertheless, the protective helmets of different sizes are allowed to be in- cluded in the same type provided that the thickness of anti-concussion liner of the helmet of each size is claimed at least to be equal to the helmets conform- ing to this Standard by testing. 4 Mandatory require
20、ments 4.1 The basic construction of the protective helmets shall be that the rigid shell which forms the outside provides the additional means for absorbing impact and the supporting device in the manufacturing process. 4.2 The protective helmet may be provided with earlaps, a neck cover, removable
21、peak, shield or chin guard. 4.3 The parts or mounting devices of the protective helmet shall be so designed as not to injure the wearer and these parts or devices shall conform to this Standard even after mounting or incorporating as permanent parts. 4.4 The protected area shall be as follows: a) Th
22、e shell covers all points above the plane AA and at least down to the line CDEF on the both sides of the headform (see Attached Fig. 2). b) The anti-concussion liner shall cover the overall area specified in a) except the parts of concha. 4.5 The protective helmet shall not interfere with the aural
23、function of user to a dangerous degree. Ventilation holes may be applied on the shell so as to keep an appropriate temperature in the space between the head and the shell. The outer surface shall be substantially smooth. The form of the part above the reference plane STD-JIS T 8133-ENGL 2000 M 4733b
24、08 0570598 T88 M 3 T 8133 : 2000 shall be of a continuous convex curved-face except the case where undulations are functionally required. Irregular part of the curved-surface under the reference plane shall be streamlined. A permanent peak is not allowed to be given on the shell but a permanent guar
25、d is allowed. In the protective helmet not having shield mounting system, the shape of the front edge of the shell shall not be obstacle to wearing goggles. 4.6 Any protrusion exceeding 5 mm is not allowed to be on the outside surface of the shell. However, the removable devices equipped on the back
26、 side of the helmet for fixing goggles and readily removing parts when receiving an impact, the device for attaching a shield to the shell, the devices for supporting shield and covering the ears may be allowed, if they are finished to smooth streamline form. 4.7 Every outside protrusion other than
27、the snaps shall be smooth and streamlined. The tip of the rivet shall be of curved-face and shall not extrude exceeding 2 mm from the outside surface of the shell. 4.8 Hard protrusions on the inside of the shell shall be treated by padding so that the pressure transmitted to the head does not concen
28、trate strongly. 4.9 Each part of the protective helmet shall be so assembled as not to be easily removed in the test in 5.3 except those designed to easily remove in an event of re- ceiving impact. 4.10 The protective helmet shall be kept on the wearer by means of the keeping device firmly connectin
29、g with the shell in a way of hooking under the chin or pass- ing a chin strap under the chin. If the keeping device is equipped with a chin strap, at least a width of 20 mm shall be kept under a static load of 150 k 5 N. The chin strap shall not be equipped with a chin cup. The device for opening th
30、e keeping device shall be operated only by conscious procedure. If it is a device for opening by pressure, it shall be impossible to be opened even by pushing with a ball of 100 mm diameter. For the protective helmet it shall be confirmed that the helmet is kept on the head by means of the keeping d
31、evice in the test specified in 5.6. In this case, if a range of size is included in the same type of the protective helmets, the helmet showing the worst condition such as having a thickest pad shall be tested. 4.11 The characteristics of the materials used for manufacturing the protective hel- mets
32、 shall be those considered to be little affected by the sun-rays, extreme tem- perature and exposure to the rain under the usual using condition. The part of the protective helmet which contacts the skin shall be made of the material considered not to be affected by the deterioration of the function
33、 to be assessed by the influence of perspiration or cosmetics. The manufacturer shall not use materials considered in general to cause skin injury. The manufacturer is responsible for determining whether new material is suit- able for manufacturing the protective helmets. STDmJIS T 8L33-ENGL 2000 H
34、4933b08 0570599 914 4 T 8133 : 2000 4 . 1 2 The protective helmets shall not be destroyed or deformed to the dangerous extent to the user when carrying out each test specified. 4 . 1 3 Peripheral visual field 4 . 1 3 . 1 In carrying out the test, the protective helmet expected to come to the worst r
35、esult is chosen from among the helmets of various sizes within the same type of the protective helmets. 4 . 1 3 . 2 The helmet is mounted on a headform suitable for its size in accordance with the procedure given in Annex 1. 4 . 1 3 . 3 Under the above condition, there shall be no part interfering t
36、he visual field within a range limited (see Attached Fig. 3.1, Attached Fig. 3.2 and Attached Fig. 3.3) as a) Horizontal direction Of two V-shapes symmetric regard to the central sag- ittal plane of the headform, the part which lies between the reference plane and the base plane. Each of these V-sha
37、pe shall be at an angle of at least 105“ to the central sagittal plane of the headform and is defined by the vertical surface which has the straight line LK as edge. b) Upward direction A V-shape defined by the surface angled by at least 7“ to the central reference plane of the headform and this sur
38、face, and having the straight line LIL as edge. c) Downward direction A V-shape defined by the surface angled by at least 45“ to the base plane of the headform and this surface, and having the straight line KIK as edge. 4 . 1 4 Shield (applicable to the helmets equipped with shield) 4 . 1 4 . 1 Open
39、 angle a) A protective helmet equipped with the shield to be tested is mounted on a test headform of the size chosen in accordance with the specification in 5 . 3 . 1 c) from among the sizes given in Attached Fig. 2 . When putting the shield up to the upper position, the angle between the tan- genti
40、al line MN specified in Attached Fig. 4 and the horizontal shall be at least 5“ and the point M shall be positioned in a lower part than the horizontal sur- face passing the point N. b) 5 Test 5 . 1 Sampling and use of sample Prior to the shock absorption test, use one protective helmet pre-conditio
41、ned at room temperature for the roll-off test and use each protective helmet pre-conditioned at room temperature, high temperature, low temperature and by immersion for the shock absorption tests. The protective hel- met assessed to be free from abnormality in the roll-off test can be used as a prot
42、ec- tive helmet conditioned at room temperature for the shock absorption test. In addition, STD.JIS T L33-ENGL ZOO0 4933606 0570b00 466 5 T 8133 : 2000 in the penetration resistance test, another helmet pre-conditioned at room tempera- ture is used. Moreover, in the dynamic test of supporting device
43、, the helmet as- sessed to be free from abnormality may be used, out of the helmets used in the shock absorption test and the penetration resistance test. 5.2 Type of pre-conditioning 5.2.1 Pre-conditioning by solvent Prepare cotton cloth of approximately 150 mm2 and an approximately 25 ml solvent c
44、omposed of isooctane 70 % and toluene 30 % in volume ratio. Apply the solvent to the overall part within 50 mm from the point on the outer surface of the shell to which the chin strap is attached, using the cloth immersed in the solvent, and keep this part as moistened with the solvent for 7.5k 2.5
45、s. If the chin guard is provided, repeat this procedure on the residual part of the outer surface including the chin guard and keep this part wet by the solvent for 12.5 - free-fall drop guiding device or guide wire-guided drop device; STD.JIS T L33-ENGL 2000 M 4733bO 0570602 239 7 T 8133 : 2000 - m
46、ovable device for supporting helmet-mounted headform; - metal or resin headform equipped with accelerometer of single axis or three axes with measuring apparatus. b) Table The table shall be made of steel or concrete, or mixture of these mate- rials and of at least 500 kg mass. The table shall be su
47、ch that any visible deformation does not arise on the surface by the impact force of tests. The table and anvil shall be free from the resonance frequency likely to give influence to the measurement. c) Anvil 1) 2) Movable device and guiding device The movable device which supports the headform shal
48、l be of the characteristic not giving influence to the measurement of accelerometer which is made at the center of gravity of the headform, and be possible to carry out the test at any points within the test range. The guiding device shall be such that the impact speed comes to at least 95 % of theo
49、retical speed. Flat plane steel anvil shall be of circular form of 130 f 3 mm diameter. Hemispheric steel anvil shall be of 50 f 2 mm radius. d) e) Accelerometer and measuring apparatus The accelerometer shall endure an acceleration of 20 W s 2 without damage, be of the mass not more than 50 g and have the following characteristics: 1) Frequency characteristic: at 10 Hz to 10 O00 Hz, the permissible error is f l d B 2) Maximum measuring value: 20 W s 2 3) Characteristic frequency: 20 O00 H z or more The measurement recorder
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