QC/T 343-2023Protective cap for nut (English PDF)

4.2.5 and 5.5 of the 2001 Edition);

e) Change light aging resistance and test methods (see 4.2.6 and 5.2.6 of this Edition; see

4.2.7 and 5.7 of the 2001 Edition);

f) Change the vibration resistance and test methods (see 4.2.8 and 5.2.8 of this Edition; see

4.2.4 and 5.4 of the 2001 Edition);

g) Add optical vibration and test methods (see 4.2.9 and 5.2.9 of this Edition);

h) Add interior mirror operational durability and test methods (see 4.2.10 and 5.2.10 of this

Edition);

i) Add exterior mirror folding durability and test methods (see 4.2.11 and 5.2.11 of this

Edition);

j) Add interior mirror odor and test methods (see 4.2.12 and 5.2.12 of this Edition);

k) Add prohibited substances and test methods (see 4.2.13 and 5.2.13 of this Edition);

l) Add combustion characteristics and test methods (see 4.2.14 and 5.2.14 of this Edition);

m) Delete impact cushioning and test methods (see 4.2.8 and 5.8 of the 2001 Edition).

Please note some contents of this Document may involve patents. The issuing agency of this

Document shall not assume the responsibility to identify these patents.

This Document was proposed by and under the jurisdiction of National Technical Committee

of Auto Standardization (SAC/TC 114).

Motor Vehicle Mirrors

3.1 Mirror

Indirect field-of-view devices that obtain a field of view through a reflecting surface.

NOTE. It does not include complex optical systems such as periscopes.

[SOURCE. GB 15084-2022, 3.2]

3.2 Interior mirror

A mirror installed inside a vehicle is used to observe the field of view directly behind the vehicle.

[SOURCE. GB 15084-2022, 3.3]

3.3 Exterior mirror

A mirror installed outside a vehicle is used to observe the field of view behind, to the sides, or

in front of the vehicle.

[SOURCE. GB 15084-2022, 3.4]

4.1 General requirements

4.1.1 The fillet radius, protrusion height, dimensions, reflective surface, and radius of curvature

of the mirror shall conform to the provisions of GB 15084-2022.

4.1.2 The surface of the mirror shall be free from defects such as deformation, blurring, bubbles,

scratches, cracks, bright spots, black spots, and water ripples, etc.

4.1.3 The surface of the injection-molded parts shall be free from defects such as burrs, breaks,

exposed areas, shrinkage marks, weld lines, and scratches, etc.

4.1.4 The auto-dimming rearview mirror shall conform to the provisions of QC/T 947.

4.1.5 The Driver of electric rear-view mirrors for motor vehicles shall conform to the provisions

of QC/T 965.

4.2 Performance requirements

4.2.1 Radius of curvature

The radius of curvature of the mirror shall conform to the provisions of GB 15084-2022.

4.2.2 Reflectivity

The reflectivity of the mirror shall comply with the provisions of GB 15084-2022.

4.2.3 Impact performance

The impact performance of the mirror shall comply with the provisions of GB 15084-2022.

4.2.4 Temperature alternating

The test shall be conducted according to the method specified in 5.2.4.After the test, the mirror

surface shall not be blurred or aged; and the mirror components shall not exhibit defects

affecting the product appearance such as cracking, powdering, visible deformation, stickiness,

or discoloration, etc. All functions shall operate normally.

4.2.5 Damp heat resistance

The test shall be conducted according to the method specified in 5.2.5.After the test, the mirror

surface shall not be blurred or aged; and the mirror components shall not exhibit defects

affecting the product appearance such as cracking, powdering, visible deformation, stickiness,

or discoloration, etc. All functions shall operate normally.

4.2.6 Light-aging resistance

The test shall be conducted according to the method specified in 5.2.6.After the test, the color

fastness to light of the mirror shall be no lower than Grade 4 specified in GB/T 250; and all

functions shall operate normally.

4.2.7 Corrosion resistance

The test shall be conducted according to the method specified in 5.2.7.After the test, the metal

parts of the mirror with coatings shall show no rust, cracks, deformation, or other corrosion

phenomena; and all functions shall operate normally.

4.2.8 Vibration resistance

The test shall be conducted according to the method specified in 5.2.8.After the test, each part

of the mirror shall not exhibit the phenomena that affect its function such as deformation,

damage, or detachment, etc. The mirror surface direction shall maintain its original normal

operating position; and all functions shall operate normally.

4.2.9 Optical vibration

The test shall be conducted according to the method specified in 5.2.9.The mirror assembly

shall be tested under a vibration acceleration of 0.25g (g=9.8 m/s²) and a vibration frequency

range of 20 Hz to 250 Hz, the measured torsional angle alpha shall meet the requirements of Table

1.

5.1 Appearance

Visual inspection shall be conducted at a distance of 500 mm from the human eye at a 45° angle

under an illumination of 500 lx.

5.2 Performance test

5.2.1 Radius of curvature

The radius of curvature of the mirror shall be measured according to the method specified in

GB 15084-2022.

5.2.2 Reflectivity

The reflectivity of the mirror shall be measured according to the method specified in GB 15084-

2022.

5.2.3 Impact performance

The impact performance of the mirror shall be tested according to the method specified in GB

15084-2022.

5.2.4 Temperature alternating

The mirror is installed on the test frame in its actual vehicle condition, without power supply,

and placed in the test apparatus. The interior mirror is placed at a high temperature of (90±2)°C

and the exterior mirror at (70±2)°C for 1 h; then stand at room temperature for 0.5 h; then stand

at a low temperature of (-40±2)°C for 1 h; and then stand at room temperature for 0.5 hour. This

completes one thermal cycle, which is repeated for 10 times.

5.2.5 Damp heat resistance

Install the mirror on the test stand as it should be on a real vehicle, without power supply, and

conduct the test according to the conditions given in Table 3.

5.2.6 Light-aging resistance

......