Protect -For safety in case of emergency-

Outline of usability evaluation test

test method

In this test, a child dummy is placed in a child seat installed in the test seat fixing on the sled,then the sled accelerated equivalent front collision speed of 55 km/h (this collision speed is 10 % higher than the government regulated frontal collision speed). Then, evaluation of the damage of CRS installation arear, resultant acceleration on a dummy's head and chest, excursion distance of a dummy head and aggresiveness under the condition of restrained by the harness are measured.

Test seat was changed.

From FY2009, test seat installing CRS was changed from Toyota ESTIMA seat to the test seat using for the test of safety technical regulation of CRS.

Review of evaluation threshold
Comparison tests were conducted for new test seat and Toyota ESTIMA seat, and based on these study results, evaluation thresholds were reviewed. Due to the modification of these evaluation thresholds, it is possible to compare new data and old data.

evaluation method for infant

Excellent (Excellent) Product was given 4 ◎ marks (No × marks)
Good (Good) Product was given 3 ◎ marks and 1 ○ mark (No × marks)
Nomal Product not falling into any of the other 3 ratings (Excellent, Good, Not recommended)
Not recomended 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.

Each methods

A. Damage of such as fixtures
No damage on the fixtures
Slight damage (such as crack, etc.) and maintained restraint
× Terribly damaged structure and did not maintain function
B. Chest received force (Chest resultant acceleration)
Chest r. acceleration <= 490m/s2 (50G) (*1) [ C.R.A <= 539m/s2(55G) ]
490m/s2 (50G) Chest r. acceleration (*1) [ 490m/s2 (50G) < CRA ]

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

Rearward facing type

C. Projection position of dummy head from top surface of CRS
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 ]

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

D. Projection position of dummy head from top surface of CRS
No projection
within 73 mm projection of head
× Over 73 mm projection of head

Bed type

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
D. Projection position of dummy head from top surface of CRS
excursion <= 575 mm (*1) [ excursion <= 600 mm ]
575 mm < excursion <= 650 mm (*1) [ 600mm < excursion <= 750 mm ]
× 650 mm < excursion (*1) [ 750mm < excursion ]

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

Other
× Released of buckle during crash
× CRS ejected from vehicle seatbelt

evaluation method for toddler

Excellent (Excellent) Product was given 4 ◎ marks (No × marks)
Good (Good) Product was given 3 ◎ marks and 1 ○ mark (No × marks)
Nomal Product not falling into any of the other 3 ratings (Excellent, Good, Not recommended)
Not recomended 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.

Each methods

A. 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
B. Chest resultant acceleration
Chest resultant acceleration <= 588 m/s2 (60G)
588 m/s2 (60G) < Chest resultant acceleration
C. Head excurtion in forward direction
Excursions <= 525mm (*1) [ Excursion <= 550mm ]
525mm < Excursion <= 600mm (*1) [ 550mm < Excursion <= 700mm ]
× 600mm < Excursion (*1) [ 700mm < Excursion ]

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

D. Head resultant acceleration
Head resultant acceleration <= 637m/s2 (65G) (*1) [ H.R.A. <= 5784m/s2 (80G) ]
637m/s2 (65G) < Head resultant acceleration (*1) [ 784m/s2 (80G) < H.R.A. ]

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

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.

New Car Assessment

Child Seat Assessment

Automatic accident emergency call system