Combination switch on steering string for automobiles

2019-07-01 16:04:07 414

Order time

Foreword. IV

1 range. 1

2 Normative reference documents. 1

3 Terms and definitions 1

4 Basic Requirements 2

5 Technical Requirements. 3

6 Test methods. 8

7 Inspection rules. 16

8 Marking, packing, transportation and storage. 18

9 Quality commitment. 18


preface

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This standard is put forward and centralized by Zhejiang Brand Building Association.

This standard is organized by ×××.

The main drafting unit of this standard: Zhejiang Wanchao Electric Appliance Co., LTD.

The drafting unit of this standard: ×××.

The main draftsman of this standard: ×××.

This standard is to be interpreted by ×××.


Combination switch on automotive steering string

1 Range

This standard specifies the basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage and quality commitment of the combination switch on the motor vehicle steering gear.

This standard applies to combination switches (hereinafter referred to as "combination switches") mounted on automotive steering strings.

2 Normative reference documents

The following documents are essential for the application of this document. For date-referenced documents, date-only versions are applicable to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 2828.1 -- 2012 Enumer-sampling inspection procedure -- Part 1: Batch inspection sampling plan retrieved by AQL

GB/T 7324-2010 general purpose lithium grease

GB/T 30512 -- 2014 Requirements for banned substances in automobiles

GB/T 28046.4 -- 2011 Environmental conditions and tests for electrical and electronic equipment for road vehicles -- Part 4: Climatic loads

QC/T 218 -- 2017 Automotive steering string combination switch technical conditions

QC/T 413 -- 2002 Automotive electrical equipment basic technical conditions

3 Terms and definitions

The terms and definitions defined in QC/T 218 -- 2017 apply to this document.

4 Basic Requirements

4.1 R&D Design

4.1.1 Shall have the design ability of product quality planning in advance.

4.1.2 The applicant shall be capable of applying various design software and calculating and analyzing various performance indicators.

4.1.3 Three-dimensional software, rapid prototyping technology and motion simulation should be used to optimize the structure of the product.

4.1.4 Should have the ability of mold design and mold flow analysis.

4.2 Raw Materials

4.2.1 No corrosion on the surface of metal materials conforming to the neutral salt spray test.

4.2.2 Raw materials shall meet the requirements of GB/T 30512 -- 2014 limits for the content of toxic and harmful substances.

4.3 Production and Manufacturing

4.3.1 The assembly line shall be equipped with online detection of working voltage, working current, blocked rotor force, running speed, etc.

4.3.2 A full/semi-automatic test platform should be used to simulate vehicle status to monitor the basic performance indicators of the combination switch.

4.4 Detection Capability

4.4.1 The key processes of the assembly line have the ability of online monitoring.

4.4.2 It shall have the ability of incoming inspection and process inspection of raw materials and components.

4.4.3 It should be capable of testing type test items such as high and low temperature, wet and hot cycle.

4.4.4 It shall be capable of detecting key items such as high and low temperature durability and three comprehensive vibration test designed by this standard.

5 Technical Requirements

5.1 General Requirements

5.1.1 Product drawings and technical documents

The combination switch shall conform to the requirements of this standard and be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures.

5.1.2 Appearance

The combination switch should have good appearance quality, the structure should be intact, no wrong assembly, leakage assembly bad phenomenon; Surface film should be uniform, no bubbles, blank, accumulation and overflow phenomenon; Metal parts shall have anti-corrosion layer; Plastic parts should have no cracks, no deformation affecting the use and appearance.

The identifier and signal identifier used by the combination switch shall comply with the provisions of GB 4094. The logo is clear, no local shedding, shrinking or blurring phenomenon.

5.1.3 Dimensions

The size of the combined switch shall conform to the specifications of the product drawing.

5.2 Rated Load

The rated load of the combined switch shall comply with the provisions of the product technical documents.

5.3 Functions, Performance, and Features

5.3.1 Gear and functions

Combined switch gear should be flexible, clear and reliable positioning, no loosening and blocking phenomenon. Switch with automatic return function, when the external force is eliminated should be able to automatically and accurately return. From one gear to another, the combined switch identifier indicates that the position should be correct. Its functions are general or include some or all of the functions listed in Table 1. According to the needs of prevention, it may also have the functions not listed in Table 1.

Table 1 Combined switch functions and functional characteristics

The serial number

The name of the

Typical working gears and functions

1

Turn signal switch

Left turn, right turn, Lane change (automatic reverse)

2

Light changing switch

High light (fixed position or automatic return), close light, overtaking (automatic return)

3

Master light switch

Position light, headlight, automatic headlight

4

Fog light switch

Front fog light, rear fog light

5

Front and rear wiper switches

Front wiper includes: spotting (automatic return), intermittent, low speed, high speed;

Aftershave include: aftershave intermittent, aftershave open

6

Front wiper intermittent speed adjustment switch

Intermittent speed adjustment for front wiper

7

Scrubber switch

Washing before and after (automatic return)

8

Cruise control switch

Turn off, turn on, increase fixed speed (automatic return), reduce fixed speed (automatic return)

9

Menu page turning switch

Set/reset (automatic return), up turn (automatic return), down turn (automatic return)

5.3.2 Changing Force (or moment)

The conversion force (or torque) required by the switch when it is converted from one gear to another shall comply with the provisions of the product technical documents. Similar functions in the opposite direction corresponding to the difference in switching force (or torque) should not be more than 30%, such as left and right turn signal function.

5.3.3 Speed Features

For the turn signal switch with automatic return mechanism, when the steering wheel is turned back at the speed of 150r/min, there shall be no failure of undoing action and mechanical shift, and the reverse switching time of the circuit shall not be more than 30ms.

5.3.4 Resistance to mechanical interference

For the turn signal switch with automatic return mechanism and anti-interference mechanism, the handle is forcibly retained in the steering position when the steering wheel does the return action, and the blocking of the steering gear action and the damage of the switch structure should not occur.

5.4 Strength

After the strength test, the combination switch should be able to work normally, switch structure without damage.

5.5 Operation Sound

The operating sound of each function gear of the switch shall not be greater than 65dB (A).

5.6 Electroplating and chemical treatment layer

Electroplating and chemical treatment of metal parts shall comply with the relevant regulations in QC/T625-1999.

5.7 Voltage Drop

When the combined switch uses the rated current, the output voltage drop at both ends of the contacts of each function gear shall meet the requirements in Table 2. For the combined switch with the wiring harness leading plug, the voltage drop value of the leading wire harness should be subtracted. For the combined switch with the output resistance coded signal, it is not necessary to measure the contact voltage drop, but directly measure the resistance value between the contacts at the time of disconnection and on, and the resistance value should conform to the provisions of the product technical document.

Table 2 Voltage drop

Rated current I

I≤0.02 A

0.02A<I≤0.5 A

0.5 A<I≤10 A

I>10 A

Contact voltage drop

50 mV

80 mV

100 mV

For every 1A increase in current, the voltage drop increases by 25mV, but the maximum voltage drop is not greater than 250mV

Voltage drop after durability test

The allowable voltage drop after durability test is not greater than 170% of the value specified in this table

5.8 Contact temperature rise

In the combination switch, if the rated current of a switch is greater than 1A, the temperature rise test of the contact is required. At the rated current, the temperature rise of the contacts shall not exceed that specified in Table 3.

Table 3 Temperature rise of contacts

Contact material

Temperature rise /℃

Copper or copper alloy

40

Silver or silver alloy

60

5.9 Contact vibration

In the process of switching between different gears, contact vibration time should be less than 30ms when contact contact or disconnect.

5.10 Temperature resistance

5.10.1 Low temperature resistance

5.10.1.1 Low temperature storage resistance

After the low-temperature storage test, the appearance of the combined switch shall comply with the provisions of 5.1.2. When it is restored to normal temperature, the functions, functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.10.1.2 Low temperature operation performance

After the low-temperature operation test, the appearance of the combined switch shall comply with the provisions of 5.1.2. Function and functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.10.2 High temperature resistance

5.10.2.1 High temperature storage performance

The appearance of the combined switch shall comply with the provisions of 5.1.2 after the storage test at a high temperature of 80 ℃ for 48 hours. When it is restored to normal temperature, the functions, functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.10.2.2 High temperature resistance performance

After high temperature operation test, the appearance of the combined switch shall comply with the provisions of 5.1.2. Function and functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.11 Resistance to temperature cycle change

The appearance of the combined switch shall comply with the provisions of 5.1.2 after the temperature cycle test at the specified rate of change. Function and functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.12 Cycle resistance to moisture and heat

The appearance of the combined switch shall comply with the provisions of 5.1.2 after the moisture and heat cycle test. Function and functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.13 Salt spray resistance

After salt spray resistance test, the appearance of the combined switch shall comply with the provisions of 5.1.2. Functions, functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7, and there is no pitting on the surface after cleaning.

5.14 Dust resistance

After the dust resistance test, the function, functional characteristics and voltage drop of the combined switch shall comply with the provisions of 5.3 and 5.7.

5.15 Temperature cycle vibration resistance

The appearance of the combined switch shall comply with the provisions of 5.1.2 after the temperature-resistant cyclic vibration test. Function and functional characteristics and voltage drop are in line with the provisions of 5.3 and 5.7.

5.16 Symbol strength

5.16.1 Chemical reagent resistance

Combined switch after chemical reagent resistance test, the sample surface does not change, the label content is clear and readable.

5.16.2 Adhesion performance

After the adhesion test of the combined switch, the shedding area of the surface of the symbol, the corner of the square and the cutting intersection should not be significantly greater than 5%.

5.16.3 Wear resistance

After the wear resistance test of the combined switch, the symbol should be recognizable.

5.17 Durability

According to the working times of the combined switch specified in Table 4, after the endurance test, the absolute value of the change of the conversion force (or moment) should not be greater than 40% of that before the test; The voltage drop is allowed to be no more than 170% of the specified value of 4.7. Gear and functions shall comply with 4.3.1.

Table 4 Times of work

The serial number

The name of the

Number of jobs a

1

Turn signal switch

150 000

2

Light changing switch

150 000

3

Master light switch

60 000

4

Fog light switch

30 000

5

Wiper switch

50 000

6

Wiper intermittent speed adjustment switch

30 000

7

Scrubber switch

30 000

8

Cruise control switch

100 000

9

Menu page turning switch

10 000

a Note: a durability test is carried out under the conditions of normal temperature, low temperature and high temperature, respectively according to the operating times of 60% at normal temperature, 20% at low temperature and 20% at high temperature.

5.18 DC Supply Voltage

For the nominal voltage of the vehicle electrical system is 12V system, in the test, each circuit of the combined switch through the supply voltage of 9V-16V; For the nominal voltage of the vehicle electrical system is 24V system, the circuit of the combined switch in the test is provided with 16V-32V supply voltage. In the test, the combined switch should meet the functional requirements given in Table 1; After the test should be on and off normally.

5.19 Overvoltage

Electronic combination switches should be tested for overvoltage. In the test, the combined switch should meet the functional requirements given in Table 1; After the test should be on and off normally.

5.20 Stacking AC voltage

The electronic combination switch shall be tested with superimposed AC voltage. In the test, the combined switch should meet the functional requirements given in Table 1; After the test should be on and off normally.

5.21 Slow voltage drop and slow voltage rise

The electronic combination switch should be tested for slow voltage drop and slow voltage rise. In the test, the combined switch should meet the functional requirements given in Table 1 in the range of power supply voltage; After the test should be on and off normally.

5.22 Power supply voltage Transient Change

5.22.1 Power Supply Voltage Drops instantaneously

The electronic combination switch shall be tested for instantaneous drop of supply voltage. In the test, the combined switch should meet the functional requirements given in Table 1; After the test should be on and off normally.

5.22.2 Reset performance against voltage plunge

The reset performance test of the electronic combination switch against voltage plunge should be carried out. In the test, the combined switch should meet the functional requirements given in Table 1 in the range of power supply voltage; After the test should be on and off normally.

5.23 Reverse voltage

The electronic combination switch should carry out reverse voltage test, and after the test, it should be on and off normally after restoring the normal connection.

5.24 Open circuit test

The electronic combination switch should be open circuit test, after the test, after the restoration of normal connection should be off normally.

5.25 Short Circuit Protection

Hw1 signal circuit

The combined switch composed of signal circuit should be tested for short circuit protection. After the test, the connection should be restored after the normal connection.

Hw2 load circuit

The combined switch composed of signal circuit should be tested for short circuit protection. After testing, all electronic protection outputs shall ensure that they can withstand short circuit current and return to normal operation after cutting short circuit current (functional status is Class C as defined in GB/T 28046.1-2011).

All conventional fuse protection outputs shall be able to withstand short circuit current and return to normal operation after cutting short circuit current (functional status is Class D as defined in GB/T 28046.1-2011).

All unprotected outputs are allowed to be burned out by the test current (functional status is Class E as defined in GB/T 28046.1-2011).

5.26 Insulation resistance

The insulation resistance between the current-free contacts and between the current-free contacts and the housing in the combined switch should be greater than 10 Mω.

5.27 EMC performance

5.27.1 Conducted emission

An active electronic combination switch should be tested for conduction emission. The conducted disturbance limits (peak and average) of the combined switch test under test shall comply with the relevant requirements of Grade 3 of GB/T 18655-2010.

5.27.2 Radiofrequency Emission

Active electronic combination switches should undergo radiation emission tests. The radiation disturbance limits (peak and mean value) of the combined switch test under test shall comply with the relevant requirements of Grade 3 of GB/T 18655-2010.

5.27.3 Voltage transient emission

Active electronic combination switch should undergo transient emission test. The requirements for transient voltage values of the tested sample are as follows: for vehicles with 12V system, the positive transient voltage should not exceed 75V, and the negative transient voltage should not exceed -100V; For 24V system vehicles: the positive transient voltage should not exceed 150V and the negative transient voltage should not exceed -450V.

5.27.4 Radio Frequency Anti-jamming -- anechoic chamber Method

Active electronic combination switch should be tested by RF anti-jamming - anechoic chamber method. When the test level of the combined switch sample is 100V/m, the function grade meets Grade A.

5.27.5 RF Anti-jamming -- high current injection method

Active electronic combination switch should be tested by RF anti-jamming and high current injection elimination method. When the test level of the combined switch sample is 100 mA, the function grade meets Grade A.

5.27.6 Power Cable transient conduction Anti-interference

The power line transient conduction anti-jamming test should be carried out for the electronic combined switch. The test of the tested combination switch shall meet the following requirements: when the pulse is 1&2b&4&5b, the function grade shall meet the C grade; When the pulse is 2a, 3a, and 3b, the functional level meets Grade A.

5.27.7 Signal Cable transient conduction Anti-interference

Active electronic combination switch should be subjected to signal line transient conduction anti-jamming test. The functional grade of the test combination switch sample meets Grade A.

5.27.8 ESD Discharge

The electronic combination switch should be tested by electrostatic discharge. The functional grade of the sample of the combined switch under test shall meet the requirements in Table 5.

Table 5 Electrostatic discharge test requirements

State of operation

Type of discharge

Grade of test

Level of function

Power on operation

Discharge by contact

±8KV

A

Discharge of air

±15KV

C

Out of power

Discharge by contact

±8KV

A

Discharge of air

±25KV

C

6 Test Conditions

6.1.1 General test conditions

Follow the method specified in 5.1.1 of QC/T 218 -- 2017.

6.1.2 Test equipment and instrument

Follow the method specified in 5.1.2 of QC/T 218 -- 2017.

6.2 Appearance Check

Check by visual inspection.

6.3 Size Check

Use general or special measuring tools in accordance with the regulations.

6.4 Function and function characteristic test

6.4.1 Gear and function check

Follow the method specified in 5.4.1 of QC/T 218 -- 2017.

6.4.2 Check the conversion force (or torque)

Follow the method specified in 5.4.2 of QC/T 218 -- 2017.

6.4.3 Speed characteristic test

Follow the method specified in 5.4.3 of QC/T 218 -- 2017.

6.4.4 Resistance to mechanical interference characteristic test

Follow the method specified in 5.4.4 of QC/T 218 -- 2017.

6.5 Strength test

6.5.1 Strength test of handle type switch

Follow the method specified in 5.5.1 of QC/T 218 -- 2017.

6.5.2 Rotary switch strength test

Follow the method specified in 5.5.2 of QC/T 218 -- 2017.

6.5.3 Strength test of push-button switch

Follow the method specified in 5.5.3 of QC/T 218 -- 2017.

6.6 Operation sound test

Follow the method specified in 5.6 in QC/T 218 -- 2017.

6.7 Voltage drop test

Follow the method specified in 5.7 of QC/T 218 -- 2017.

6.8 Contact temperature rise test

Follow the method specified in 5.8 in QC/T 218 -- 2017.

6.9 Contact vibration test

Follow the method specified in 5.9 in QC/T 218 -- 2017.

6.10 Temperature resistance test

6.10.1 Low temperature resistance test

6.10.1.1 Low temperature storage performance test

6.10.1.1.1 Purpose

Follow the method specified in 5.1.1.1.1 of GB/T 28046.4 -- 2011.

6.10.1.1.2 Test

The test was carried out at -40℃ according to GB/T2423.1 for 48h, except as otherwise specified by DUT technical conditions. The DUT works in 1.1 mode.

6.10.1.1.3 Requirements

Follow the method specified in 5.1.1.1.3 in GB/T 28046.4 -- 2011.

6.10.1.2 Low temperature operation performance test

Follow the method specified in 5.10.1.2 of QC/T 218 -- 2017.

6.10.2 High temperature resistance test

6.10.2.1 High temperature storage performance test

6.10.2.1.1 Purpose

Follow the method specified in 5.1.2.1.1 of GB/T 28046.4 -- 2011.

6.10.2.1.2 Test

In addition to the DUT technical conditions, the test was carried out at 95℃ high temperature and dry heat according to GB/T2423.2 for 48h. The DUT works in 1.1 mode.

6.10.2.1.3 Requirements

Follow the method specified in 5.1.2.1.3 of GB/T 28046.4 -- 2011.

6.10.2.2 High temperature resistance performance test

Follow the method specified in 5.10.2.2 of QC/T 218 -- 2017.

6.11 Temperature cycle resistance performance test

According to QC/T 218 -- 2017 5.11 method.

6.12 Moisture and heat resistance cycle performance test

Follow the method specified in 5.12 of QC/T 218 -- 2017.

6.13 Salt spray resistance test

Follow the method specified in 5.13 of QC/T 218 -- 2017.

6.14 Dust resistance test

Follow the method specified in 5.14 of QC/T 218 -- 2017.

6.15 Vibration performance test of heat resisting cycle

The combined switch is installed on the vibration test bench, and the passenger car is tested according to the test method specified in 4.1.2.4 in GB/T28046.3-2011. Commercial vehicles shall be tested in accordance with the test method specified in 4.1.2.7 of GB/T28046.3-2011. The temperature cycle was tested according to 5.3.1.2 in GB/T28046.4-2011.

6.16 Symbol strength test

6.16.1 Chemical reagent resistance test

Follow the method specified in 5.16.1 of QC/T 218 -- 2017.

6.16.2 Adhesion performance test

Follow the method specified in 5.16.2 of QC/T 218 -- 2017.

6.16.3 Wear resistance test

Follow the method specified in 5.16.3 of QC/T 218 -- 2017.

6.17 Durability test

6.17.1 Durability test rules

Follow the method specified in 5.17.1 of QC/T 218 -- 2017.

6.17.2 Turn signal switch

Follow the method specified in 5.17.2 of QC/T 218 -- 2017.

6.17.3 Optical converter

Follow the method specified in 5.17.3 of QC/T 218 -- 2017.

6.17.4 Main light switch

Follow the method specified in 5.17.4 of QC/T 218 -- 2017.

6.17.5 Fog lamp switch

Follow the method specified in 5.17.5 of QC/T 218 -- 2017.

6.17.6 Wiper switch

Follow the method specified in 5.17.6 of QC/T 218 -- 2017.

6.17.7 Wiper intermittent speed control switch

Follow the method specified in 5.17.7 of QC/T 218 -- 2017.

6.17.8 Scrubber switch

Follow the method specified in 5.17.8 of QC/T 218 -- 2017.

6.17.9 Cruise switch

Follow the method specified in 5.17.9 of QC/T 218 -- 2017.

6.17.10 Menu Page Flip Switch

Follow the method specified in 5.17.10 of QC/T 218 -- 2017.

6.18 DC supply voltage test

According to QC/T 218 -- 2017 5.18 method.

6.19 Overvoltage test

According to QC/T 218 -- 2017 5.19 method.

6.20 Superimposed AC voltage test

Follow the method specified in 5.20 of QC/T 218 -- 2017.

6.21 Supply voltage slow drop and slow rise test

Follow the method specified in 5.21 of QC/T 218 -- 2017.

6.22 Transient change test of supply voltage

6.22.1 Power supply voltage instantaneous drop test

Follow the method specified in 5.22.1 of QC/T 218 -- 2017.

6.22.2 Reset performance test for voltage plunge

Follow the method specified in 5.22.2 of QC/T 218 -- 2017.

6.23 Reverse voltage test

According to QC/T 218 -- 2017 5.23 method.

6.24 Open circuit test

According to QC/T 218 -- 2017 5.24 method.

6.25 Short circuit protection test

6.25.1 Signal circuit test

Follow the method specified in QC/T 218 -- 1 HWmap 2017.

6.25.2 Load circuit test

Follow the method specified in QC/T 218-2017.

6.26 Insulation resistance test

Follow the method specified in 5.26 of QC/T 218 -- 2017.

6.27 Electromagnetic Compatibility performance test

6.27.1 Conduction emission-voltage test

Follow the method specified in 5.27.1 of QC/T 218 -- 2017.

6.27.2 Radiation emission -- ALSE test

Follow the method specified in 5.27.2 of QC/T 218 -- 2017.

6.27.3 Voltage transient emission test

Follow the method specified in 5.27.3 of QC/T 218 -- 2017.

6.27.4 RF anti-jamming -- free field test

According to QC/T 218 -- 2017 5.27.4 method.

6.27.5 RF Anti-jamming -- high current injection test

Follow the method specified in 5.27.5 of QC/T 218 -- 2017.

6.27.6 Power line transient conduction anti-interference test

According to QC/T 218 -- 2017 5.27.6 method.

6.27.7 Anti-interference test of signal line transient conduction

According to QC/T 218 -- 2017 5.27.7 method.

6.27.8 Electrostatic Discharge Test

According to QC/T 218 -- 2017 5.27.8 method.

7 Inspection Rules

7.1 Factory Inspection

7.1.1 The combination switch shall be inspected and qualified before leaving the factory, and the product quality certificate or qualification document shall be attached.

7.1.2 Inspection items, technical requirements, test methods, sample numbers and judgment criteria shall be specified in Table 3.

Table 6 Factory inspection

The serial number

Item of Inspection

Item of Inspection

Level of conformity

Level of nonconformity

1

appearance

5

Ac=0

Re=1

2

size

5

Ac=0

Re=1

3

Function and function feature check

5

Ac=0

Re=1

4

Voltage drop check

5

Ac=0

Re=1

7.2 Acceptance Inspection

The user has the right to conduct acceptance according to the provisions of GB/T 2828.1 -- 2012. This standard recommends:

-- General examination level :Ⅱ;

-- Qualified quality level: AQL0.4 ~ AQL4.0;

-- Sampling plan: a normal inspection of the sampling plan.

The specific sampling scheme, acceptance items, defect classification and qualified quality level may be carried out according to the contents negotiated by both parties and stipulated in the product technical standards.

7.3 Type test

7.3.1 Inspection conditions

Type test should be carried out when the combination switch has one of the following conditions:

a) Trial production of new products, finalize identification;

b) If there are major changes in the structure, materials and process after the formal production, which may affect the product performance;

c) For products produced in batches, not less than once every 2 years;

d) When the product is stopped for one year or more and production is restarted;

e) There is a big difference between the ex-factory inspection result and the last type inspection.

f) When the national quality supervision and inspection institution puts forward the requirements for type inspection.

7.3.2 The sampling and grouping of the type test shall be carried out according to Table 4. For the type test after batch or mass production, two sets of products are allowed to be used for durability test.

Table 7 Sampling and grouping of type test

The serial number

Item of Inspection

requirements

Method of test

Combination switch number

Ⅰgroup

Ⅱgroup

Ⅲgroup

Ⅳgroup

Ⅴgroup

Ⅵgroup

No1.~No.3

No.4~No.6

No.7~No.9

No10.~No.12

No.13~No.15

No.16~No.18

1

Inspection of appearance

5.1.2

6.2

2

Survey of dimensions

5.1.3

6.3

3

Gear and function check

5.3.1

6.4.1

4

Check the conversion force (or moment)

5.3.2

6.4.2

5

Velocity characteristic test

5.3.3

6.4.3






6

Resistance to mechanical interference characteristic test

5.3.4

6.4.4






7

Strength test

5.4

6.5






8

Operational sound test

5.5

6.6






9

Voltage drop test

5.7

6.7

10

Contact temperature rise test

5.8

6.8


11

Contact vibration test

5.9

6.9






12

Temperature resistance test

5.10

6.10






13

Temperature cycle resistance test

5.11

6.11






14

Heat and humidity cycle resistance test

5.12

6.12






15

Salt spray resistance test

5.13

6.13






16

Dust resistance test

5.14

6.14






17

Vibration resistance test

5.15

6.15






18

Symbol strength test

5.16

6.16






19

Durability test

5.17

6.17






20

Dc supply voltage test

5.18

6.18






21

Over pressure test

5.19

6.19






22

Superimposed AC voltage test

5.20

6.20






23

Supply voltage slow drop and slow rise test

5.21

6.21






24

Supply voltage instantaneous drop test

5.22.1

6.22.1






25

Reset performance test for voltage plunge

5.22.2

6.22.2






26

Reverse voltage test

5.23

6.23






27

Open circuit test

5.24

6.24






28

Short circuit protection test

5.25

6.25






29

Insulation resistance test

5.26

6.26

30

Electromagnetic compatibility performance test

5.27

6.27






7.3.3 The type test of products shall meet all the specified requirements. If there is a project department qualified, can be selected to double the number of products on the unqualified items for review, if there is still unqualified, the batch of products judged as unqualified, but the durability test is unqualified should not be selected again, directly judged as unqualified.

Marking, packing, transportation and storage

8.1 Flags

The label (identification) of the combination switch shall be clear and the production batch shall comply with the regulations.

8.2 Packaging

The packaging of the combined switch shall comply with the QC/T 413-2002 in 6.2.

8.3 Transportation

During transportation and storage, the products shall not collide with each other, be affected by moisture and be eroded by active chemicals, and pay attention to the direction of stacking in accordance with the marks on the packing boxes.

8.4 Storage

Combined switch in compliance with the above transportation and packaging conditions, from the factory date within 1 year shall conform to the provisions of the relevant standards.

9 Quality Commitment

9.1 Product quality assurance shall be subject to the quality assurance agreement signed with the customer. After-sales service response time commitment: within the warranty period, product quality problems, after receiving the notice within the province within 24 hours to arrive at the scene service, outside the province within 48 hours to arrive at the scene, individual traffic inconvenient areas, within 72 hours should also arrive at the scene.