QB/T 2189-2013Hardware for furniture - Cup hinges (English PDF)

5.2 Test equipment

Unless otherwise specified, any applicable test device can be used for the test;

the test result does not depend on the device itself.

5.2.1 Loading

In the static load test, the loading speed shall be as slow as possible, to ensure

that the additional dynamic load is negligible. Unless otherwise specified, each

load applied shall be maintained for 10 s ~ 15 s.

In the durability test, the loading speed shall ensure that no dynamic heating

will occur.

Note: The applied force can be replaced by mass. The conversion relationship is that: 10 N is

equivalent to 1 kg.

5.2.2 Accuracy

Unless otherwise specified, use the following measurement accuracy:

- Loading force: ±5% of the rated value;

- Speed: ±5% of the rated value;

- Mass: ±1% of rated value;

- Size: ±1 mm;

The door can be opened and closed manually. The opening and closing time is

5.5.3 Horizontal static load

This test is only applicable to cup hinges, which have a maximum opening angle

of less than 135°.

In the fully open position of the door, apply the load specified in Table A.2 of

Appendix A on the horizontal centerline, which is 100 mm away from the side

of the cup hinge, in the direction perpendicular to the plane of the door, as

shown in Figure 4. The test is carried out 10 times. At the end of test, unload

and inspect it.

5.5.4 Durability

Suspend two weights, each of which has a mass of 1 kg, on the vertical

centerline of each side of the door (see Figure 6).

According to the number of cycles specified in Table A.2 of Appendix A, open

the door. After the maximum opening angle reaches 130°, close the door. Make

it reciprocate back and forth. When the door is in the open position, there shall

be no internal resistance. At the end of test, make inspection.

If the cup hinge does not have a damper mechanism or catch device, during

the test, the door shall be opened and closed slowly. The opening time and

closing time of the door in each cycle is about 3 seconds. The recommended

maximum frequency is 6 times/min.

If the cup hinge has a damper mechanism or catch device, THEN for each

reciprocation, the damper mechanism or catch device shall be able to perform

its function correctly.

6.1 Type inspection items

All items in Chapter 4 of this standard are type inspection items.

6.2 Type inspection shall be carried out in one of the following situations:

a) During formal production, inspection shall be carried out regularly; the

inspection period is generally 1 year;

b) When the raw and auxiliary materials AND their production processes

undergo major changes;

c) When the production is resumed after long term suspension of production;

d) Trial type appraisal of new or old products;

e) When the quality supervision agency proposes type inspection

requirements.

6.3 Sampling rules

Within one inspection cycle, randomly select 12 samples from the recently

produced products, wherein 6 samples are submitted for inspection AND 6 are

retained for reference.

6.4 Inspection procedures

The test is carried out in accordance with the steps which are specified in this

standard.

6.5 Judgment of inspection results

When the results of all inspection items meet the requirements specified in this

standard, the product is determined to be a qualified product. Those failing to

meet the requirements of qualified products are disqualified products.

6.6 Re-inspection rules

If the product fails in the type inspection, it may use the retained standby sample

for re-inspection. It shall follow the provisions of 6.5 to make judgement. In the

inspection report, indicate "qualified in reinspection" or "disqualified in

reinspection".

7.1 Markings

The product marking shall include at least the following content:

a) Product name, specification and model;

b) The number of implemented standard;

c) Inspection certificate and production date;

d) The Chinese name and address of the manufacturer.

7.2 Instructions for use

Product's instruction for use should be compiled with reference to GB 5296.6.

The content shall at least include:

a) Product name, specification model, number of implemented standard,

production date and grade;

b) The name of the main raw and auxiliary materials of the product, as well

as the location of use;

c) Main technical parameters (including maximum opening angle and hinge

cup's diameter, etc.);

d) The type of furniture to which the product is applicable (such as household

or commercial);

e) Technical requirements and considerations for product installation and

adjustment;

f) Product's use method and considerations;

g) Product failure analysis and troubleshooting, maintenance methods.

7.3 Packaging

Products shall be packaged, to prevent bumps, scratches, stains, or damages.

7.4 Transportation and storage

Products shall be stacked flat during transportation and storage. It shall take

necessary protection measures, to prevent pollution, moisture, exposure to

sunlight.

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