CNG HA X HI CH NGHA VIT NAM

QCVN 33 : 2011/BGTVT

QUY CHUN K THUT QUC GIA V GNG CHIU HU DNG CHO XE T

National technical regulation on rear view mirrors for automobiles

H NI - 2011

QCVN 33 : 2011/BGTVT

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Li ni u

QCVN 33 : 2011/BGTVT do Cc ng kim Vit Nam bin son, V Khoa hc -

Cng ngh trnh duyt, B Giao thng Vn ti ban hnh theo Thng t s

57/2011/TT-BGTVT ngy 17 thng 11 nm 2011.

Quy chun ny c bin son trn c s tiu chun TCVN 6769:2001.

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QUY CHUN K THUT QUC GIA V GNG CHIU HU DNG CHO XE T

National technical regulation on rear view mirrors for automobiles

1. QUY NH CHUNG

1.1. Phm vi iu chnh

Quy chun ny quy nh v yu cu k thut v kim tra cht lng an ton k thut i vi gng chiu hu dng cho xe t (sau y gi tt l gng).

1.2. i tng p dng

Quy chun ny p dng i vi cc c s sn xut, nhp khu gng, sn xut lp rp t v cc c quan, t chc lin quan n th nghim, kim tra chng nhn cht lng an ton k thut.

Quy chun ny p dng cho cc loi gng chiu hu dng lp trn xe t loi M v N (sau y gi tt l xe), nh c nh ngha ti Ph lc 6 Quy chun ny. 1.3. Gii thch t ng Cc thut ng dng trong quy chun ny c nh ngha nh sau: 1.3.1. Gng chiu hu (Rear-view mirror) l b phn dng quan st pha sau v bn cnh xe, nh c m t ti Ph lc 1. Gng chiu hu khng bao gm cc h thng quang hc nh h thng lng knh, cc camera, mn hnh quan st in t. 1.3.2. Vng quan st (Field of vision) l phm vi quan st c ca ngi li trn mt ng khi ngi li s dng c hai mt, c xc nh khi v tr lm vic bnh thng. 1.3.3. Gng chiu hu lp trong (Interior rear-view mirror) l gng chiu hu c lp trong khoang li ca xe. 1.3.4. Gng chiu hu lp ngoi (Exterior rear-view mirror) l gng chiu hu c lp bn ngoi xe. 1.3.5. Gng quan st (Surveillance rear-view mirror) l mt loi gng chiu hu khc vi gng c nh ngha trong 1.3.1, c th c lp bn trong hay bn ngoi xe c vng quan st khc vi vng quan st nu ti 1.3.1. 1.3.6. Kiu gng chiu hu (Rear-view mirror type) cc gng chiu hu c coi l cng kiu nu c cng nhn hiu, nh sn xut, dy chuyn sn xut v khng c s khc bit v cc c tnh k thut chnh sau y:

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a) Cc kch thc v bn knh cong ca b mt phn x gng; b) Kt cu, hnh dng hay vt liu ch to gng v cc b phn lin kt vi xe. 1.3.7. Bn knh cong trung bnh r l gi tr bn knh cong ca b mt phn x gng c xc nh theo phng php m t ti mc 3.2 ph lc 3 quy chun ny. 1.3.8. Bn knh cong chnh ti mt im trn b mt phn x (ri) (Principal radiation of curvature at one point obtained on the reflecting surface (ri)) l gi tr o c bng thit b nu trong ph lc 3, o trn cung trn ln nht ca b mt phn x i qua tm gng song song vi on b, c nh ngha trong 2.2.2, v o trn cung vung gc vi n. 1.3.9. Bn knh cong ti mt im trn b mt phn x (rp) (Radius of curvature at one point obtained on the reflecting surface (rp)) l gi tr trung bnh cng ca cc bn knh cong chnh ri v ri

rp = 2'rr ii +

1.3.10. Tm ca gng (Centre of the mirror) l trung tm vng c nhn thy trn b mt phn x. 1.3.11. Bn knh cong c cc phn cu thnh ca gng (Radius of curvature of the constituent parts of the rear-view mirror) l bn knh ca cung ng trn gn ging nht vi dng cong ca cc b phn tng ng.

2. QUY NH K THUT 2.1. Quy nh k thut chung 2.1.1. Tt c cc gng phi iu chnh c vng quan st. 2.1.2. Mp ca b mt phn x gng phi nm trong v bo v v mp ca v bo v phi c bn knh cong "c" c gi tr khng nh hn 2,5 mm ti mi im v theo mi hng. Nu b mt phn x nh ra khi v bo v th bn knh cong "c" ca mp bin ca phn nh ra khng c nh hn 2,5 mm v phi di chuyn c vo pha trong v bo v khi tc dng mt lc 50 N vo im ngoi cng ca phn nh ra ln nht so vi v bo v theo hng vung gc vi mt phn x gng. 2.1.3. Sau khi kim tra theo Ph lc 4, gng chiu hu c lp trn mt mt phng, tt c cc chi tit, cc v tr c th iu chnh ca gi , bao gm cc chi tit vn gn vi v bo v sau khi tin hnh kim tra theo Ph lc 4, m c kh nng tip xc vi qu cu c ng knh 165 mm (trong trng hp gng lp trong), hoc

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ng knh 100 mm (trong trng hp gng lp ngoi) phi c bn knh cong "c" khng nh hn 2,5 mm. Mp ca cc l lp t hay cc ch lm c chiu rng nh hn 12 mm th khng phi p dng cc yu cu v bn knh trn nhng phi c lm cn cnh sc. 2.1.4. Gi lp gng ln xe phi c thit k nh mt hnh ng, m ng trc ca n l trc quay ca cht hoc khp quay, m bo cho gng chiu hu dch chuyn theo hng va chm ti st gn b mt lp gi gng. 2.1.5. Trong trng hp gng lp ngoi, cc chi tit c lm bng vt liu mm c cng khng ln hn 60 Shore A th khng phi p dng cc yu cu nu ti 2.1.2 v 2.1.3. 2.1.6. Trong trng hp gng lp trong, cc chi tit nu trong 2.1.2 v 2.1.3 c lm bng vt liu mm vi cng nh hn 50 Shore A, c lp trn mt cng, th quy nh ghi trong 2.1.2 v 2.1.3 ch p dng cho . 2.1.7. Loi gng chiu hu (Class of rear-view mirrors) l tt c cc gng chiu hu c chung mt hoc nhiu chc nng hay c tnh k thut. a) Gng chiu hu loi I: l gng chiu hu lp trong; gng ny c thit k sao cho ngi li c vng quan st nh hnh 1.1, Ph lc 1 quy chun ny.

b) Gng chiu hu loi II v III: l cc gng chiu hu lp ngoi "chnh"; gng ny c thit k sao cho ngi li c vng quan st nh cc hnh 1.2, 1.3 Ph lc 1 quy chun ny. c) Gng chiu hu loi IV: l gng chiu hu lp ngoi "gc rng"; gng ny c thit k sao cho ngi li c vng quan st nh hnh 1.4, Ph lc 1 quy chun ny. d) Gng chiu hu loi V: l gng chiu hu lp ngoi "nhn gn"; gng ny c thit k sao cho ngi li c vng quan st nh hnh 1.5, Ph lc 1 quy chun ny. 2.2. Quy nh v kch thc 2.2.1. Gng lp trong (loi I). Cc kch thc ca b mt phn x phi m bo c th v ni tip mt hnh ch nht c mt cnh 4 cm v cnh kia c chiu di "a"

a = 15 x

r10001

1

+ (cm)

2.2.2. Gng lp ngoi (loi II v III).

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a) Cc kch thc ca b mt phn x phi m bo c th v ni tip c: - Mt hnh ch nht cao 4 cm v chiu di "a" cm, v - Mt ng c chiu di "b" cm song song vi chiu cao hnh ch nht.

b) Gi tr nh nht ca "a" v "b" c cho trong bng 1 di y:

Bng 1 Gi tr nh nht ca a v b Loi gng chiu Loi phng tin a b

II M2, M3, N2 & N3 r

10001

17

+

20

III M1 v N1,

N2 v N3 (trong trng hp p dng) r

10001

13

+

7

n v tnh: cm 2.2.3. Gng lp ngoi gc rng ( Loi IV). B mt phn x phi c dng n gin v c kch thc ph hp to ra vng quan st c nu ti 2.1.7. 2.2.4. Gng lp ngoi nhn gn (Loi V). B mt phn x phi c dng n gin v c kch thc ph hp to ra vng quan st c nu ti 2.1.7. 2.3. Quy nh v h s phn x v b mt phn x 2.3.1. B mt phn x ca gng phi l dng phng hoc cu li. 2.3.2. i vi gng cu li, gi tr ca "r" khng c nh hn: - 1200 mm i vi gng lp trong (loi I) v gng lp ngoi "chnh" loi III, - 1200 mm i vi gng lp ngoi "chnh" loi II, - 300 mm i vi gng lp ngoi "gc rng" (loi IV) v gng lp ngoi nhn gn

(loi V). 2.3.3. S khc nhau gia cc bn knh cong ca gng cu li: a) S khc nhau gia ri hoc r'i v rP ti mi im kho st khng c vt qu

0,15r; b) S khc nhau gia cc bn knh cong (rP1, rP2, rP3) v r khng c vt qu 0,15r; c) Khi "r" khng nh hn 3000 mm, gi tr 0,15 r nu trong a) v b) c thay bng

0,25 r. 2.3.4. H s phn x ca gng, c xc nh theo phng php m t trong ph lc 2 ca quy chun ny, khng c nh hn 40%.

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2.4. Quy nh v bn va chm ca b mt phn x v bn un ca v bo v gng

2.4.1. Cc loi gng chiu hu, ngoi tr loi gng lp ngoi "nhn gn" (loi V), phi c kim tra bn va chm ca b mt phn x v bn un ca v bo v theo Ph lc 4 v Ph lc 5, 2.4.2. Gng khng b v trong qu trnh th. Tuy nhin, cho php c ch v trn b mt phn x ca gng nu gng c lm bng knh an ton hoc gng tha mn

iu kin sau:

Mnh knh v vn dnh vo mt trong ca v bo v hoc dnh vo mt mt

phng gn cht trn v bo v, ngoi tr mt phn mnh knh v cho php tch ri

khi v bo v min l kch thc mi cnh ca mnh v khng vt qu 2,5 mm. Ti

im t lc, cho php nhng mnh v nh c th ri ra khi b mt gng .

2.4.3. Nu gi gng b h hng, trong php th va chm i vi gng chiu hu lp trn knh pha trc, phn cn li khng c nh ra khi chn hn 1 cm v hnh dng phn cn li sau khi th phi ph hp vi iu kin m t trong 2.1.3. 2.4.4. Khng p dng vic th theo Ph lc 4 i vi gng lp ngoi, nu khng c chi tit no ca gng thp hn 2 mt tnh t mt t, k c v tr iu chnh, khi xe iu kin cht ti tng ng vi mc trng ti ti a cho php theo thit k.

iu kin ny cng c p dng nu cc thit b gn km gng ( gng, tay gng, khp quay.....) t thp hn 2 mt tnh t mt t nhng khng nh ra khi chiu rng ton b ca xe, c o trn mt phng thng ng ct ngang qua im lp gng thp nht, hoc bt c im no thuc mt phng ny nu bin dng ngang ca im c chiu rng ton b ln hn.

Trong trng hp ny phi c hng dn ch r cch lp t gng tha mn nhng iu kin nu trn v v tr ca cc chi tit gn km gng lp t trn xe.

Trong trng hp p dng iu khon ny th gi gng phi c nh du r rng bng biu tng 2m. Ngoi ra, giy chng nhn cht lng cng phi ghi nhn im ny.

3. YU CU V QUN L 3.1 Phng thc kim tra, th nghim Gng c sn xut lp rp v nhp khu mi phi c kim tra, th nghim theo cc quy nh ti Thng t 30/2011/TT-BGTVT ngy 15 thng 4 nm 2011 ca B trng B Giao thng vn ti Quy nh v kim tra cht lng an ton k thut v bo v mi trng trong sn xut lp rp xe c gii.

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3.2 Ti liu k thut v mu th Khi ngh th nghim, c s sn xut, t chc hoc c nhn nhp khu gng cn cung cp cho c s th nghim ti liu k thut v mu th nh quy nh ti mc 3.2.1 v 3.2.2. 3.2.1 Yu cu v ti liu k thut Bn v k thut ca gng phi th hin cc kch thc chnh v km theo cc thng s sau: - Nhn hiu, tn gi hoc kiu loi gng, - Thnh phn cc chi tit, vt liu ch to, - V tr lp t, hng dn lp t, - cng ca v bo v b mt phn x gng, - Bn knh cong ca b mt phn x gng, - H s phn x ca b mt phn x gng, - Bn knh cong ca mp v bo v b mt phn x gng, - Cc kch thc ca b mt phn x gng nh c nu ti mc 2.2. 3.2.2 Mu th Yu cu 04 mu th cho mi kiu gng cn th nghim. 3.3 Bo co th nghim

C s th nghim phi lp bo co kt qu th nghim c cc ni dung t nht bao gm cc mc quy nh trong quy chun ny tng ng vi tng kiu loi gng. 3.4 Cc kiu loi sn phm c kim tra, th nghim