Detail evaluation test

Evaluation method for frontal collision test

	(Excellent) Product was given 4 ◎ marks (No × marks)
	(Good) Product was given 3 ◎ marks and 1 ○ mark (No × marks)
	Product not falling into any of the other 3 ratings (Excellent, Good, Not recommended)
	Product received an mark in any of the test areas. This rating indicates that the product does not have the high level of safety here being determined, and does not mean that the product cannot be used. All products tested have the level of safety meeting relevant safety regulations.

* Impact shield type child seat (using vehicle seatbelt restrained both impact shield (restraining system to prevent ejection of child body in the occasion of crash) and child simultaneously), due to dummy chest and abdomen is received great deformation which is over measurement range, and some cases can not measure pressure on abdomen properly. Due to this reason, we did not conduct overall evaluation of this type of CRS since 2003. In addition that evaluation method of chest deflection and evaluation method of pressure on the abdomen are not established evaluation methods, therefore, we did not conduct overall Evaluation from 2009.

Evaluation items and evaluation method

For infant

Evaluation items	individual evaluation method		Evaluation
Damage of such as fixtures of CRS	No damage on the fixtures		◎
	Slight damage (such as crack, etc.) and maintained restraint		○
	Terribly damaged structure and did not maintain function		×
Inclination angle of seat back (angle)	seat back angle <= 55° (*1)	[ seat back angle <= 60 deg. ]	◎
	55° < seat back angle <= 63° (*1)	[ 60° < seat back angle <= 70° ]	○
	63° < seat back angle (*1)	[ 70° < seat back angle ]	×
Projection position of dummy head from top surface of CRS	No projection		◎
	within 73 mm projection of head		○
	Over 73 mm projection of head		×
Chest received force (Chest resultant acceleration)	Cheste r. acceleration <= 490m/s2 (50G) (*1)	[ C.R.A <= 539m/s2 (55G) ]	◎
Chest received force (Chest resultant acceleration)	490m/s2 (50G) < Chest r. acceleration (*1)	[ 490m/s2 (50G) < C.R.A ]	○
Others	Released of buckle during crash		×
Others	CRS ejected from vehicle seatbelt		×

(*1) New evaluation threshold is shown due to the change of test seat. [ ] shows old values used by 2008.

For infant ( bed type)

Evaluation items	individual evaluation method		Evaluation
Damage of such as fixtures of CRS	No damage		◎
	Slight damage (such as crack, etc.)		○
	Terribly damaged on structure		×
Restraining condition (Projection of the head from CRS, bottom angle of bed)	Bottom of bed rotated reaward (No projection of head)		◎
	No rotation bottom of bed (No projection of head)		○
	Bottom of bed rotated forward or projection of head occured		×
Dummy head excursion in forward direction	excursion <= 575mm (*1)	[ excursion <= 600mm ]	◎
	575mm < excursion <= 650mm (*1)	[ 600mm < excursion <= 750mm ]	○
	650mm < excursion (*1)	[ 750mm < excursion ]	×
Measured chest resultant acceleration	Chest r. acceleration <= 490 m/s2 (50G) (*1)	[ C.R.A. <= 539m/s2 (55G) ]	◎
Measured chest resultant acceleration	490m/s2 (50G) < Chest r. acceleration (*1)	[ 539m/s2 (55G) < C.R.A ]	○
Released buckle during crash			×
CRS is ejected from vehicle seat			×

(*1) New evaluation threshold is shown due to the change of test seat. [ ] shows old values used by 2008.

Toddler

Evaluation items	individual evaluation method		Evaluation
Damage of such as fixtures, etc.	No damage on the fixtures of CRS		◎
	Slight damage (such as acrack) and CRS is restrained		○
	Terrible damage and did not keep original structure		×
Head excurtion in forward direction	Excursions <= 525mm (*1)	[ Excursion <= 550mm ]	◎
	525mm < Excursion <= 600mm (*1)	[ 550mm < Excursion < 700mm ]	○
	600mm < Excursion (*1)	[ 700mm < Excursion ]	×
Head resultant acceleration	Head resultant acceleration <= 637m/s2 (65G) (*1)	[H.R.A. <= 784m/s2 (80G) ]	◎
Head resultant acceleration	637m/s2 (65G) < Head resultant acceleration (*1)	[ 784m/s2 (80G) < H.R.A. ]	○
Chest resultant acceleration	Chest resultant acceleration <= 588m/s2 (60G) (*1)		◎
Chest resultant acceleration	588m/s2 (60G) < Chest resultant acceleration (*1)		○
Others	Buckle is released in occasion of crash test		×
	CRS is ejected from vehicle seatbelt during crash		×
	Have some possibility of injury on weak area of abdomen by pressure in occasion of crash In the case of toddler, harness or shield is necessary to restrain the body on shoulder and pelvis. This case is applicable to be not properly restrained, or weaker parts of bosy such as neck, abdomen and crotch, etc. pressure on the abdomen is measured by pressure meter and its value is over 1.30 kN (1.38 kN by 2008), its become X.		×

(*1) New evaluation threshold is shown due to the change of test seat. [ ] shows old values used by 2008.

Evaluation items

Evaluation items			Point
Instruction manual, etc.
Instruction manual	1	Easy to understand all 12 contents	Proppery translated into Japanese for imported CRS
	2	Easiness and accuracy of ilustration	Easily understood by ilustration
	3	Description of attention and warning	Easy to undserstand air bag warning, remarks
	4	Usage explanations by size of children	Explained by size
	5	Confirmation method after installation	Check points after installation is written
Package	6	Clearness of package description	Targeted age, weight and stature etc. are written
Written on package
Contents	1	Clearness of installation method	Indication of operation in the table
	2	Description of attention and warning	Easy to undserstand air bag warning, remarks
	3	Clearness of warding	Proppery translated into Japanese for CRS
	4	Contact place regarding product	Clealy indicates information of the contact place
	5	Description of conformed regulation	Easy to see descliption and location
Belt guide	6	Location of belt pass	Clealy indicated
Safety mechanism of main body
Movable mechanism	1	Operation ability of reclining	Certain and simple operation
	2	Operation ability of rotation	Certain and simple operation
	3	Operation ability of support leg fixture	Certain and simple operation
	4	Operation ability of ISOFIX (*2)	Certain operation
Seat cover	5	Easy mentenance	Certain installation
Storage	6	Stored of user manual and attachment parts	Exsisting of stored place and easy in and out
Installation
Belt routine	1	Belt routing F(foward facing)	Easy to passing and not occure twisting
	2	Belt routing R(reaward facing)
	3	Belt routing Bed type
Securely fixing	4	Tightening of belt F(forward facing)	Easily and cetainty tighten by a person
	5	Tightening of belt R(rearward facing)
	6	Tightening of belt Bed type
	7	Easiness of belt fastening F( forward facing)	Easy and certanty of fixing
	8	Easiness of belt fastening R(rearward facing)
	9	Easiness of belt fastening Bed type
	10	Easiness of ISOFIX fixing F( forward facing) (*2)
	11	Easiness of ISOFIX fixing R(rearward facing) (*2)
	12	Easiness of ISOFIX fixing (Bed type) (*2)
	13	Judgment after installation F(forward facing)	5 minutes after starting installation loosen is judged
	14	Judgment after installation R(rearward facing)
	15	Judgment after installation Bed type
Easy to wear
Harness	1	Height adjustment	Easy to find slot location and can easily adjust
Harness	2	Length adjustment	Operation is simple and can certainly adjust
Buckle	3	Operation ability	Can certainly lock with simple operation
Buckle	4	Release ability	Difficult for child to release
Placing in CRS	5	Time for completion	Placing procedure of child is simple

(*2) CRS for universal ISOFIX is added as an evaluation item.

Indication method

Results are shown by radar chart.

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