Baby cradle inspection method

A baby cradle is a small sleeping device designed for newborns to provide a safe and comfortable sleeping environment. Its structure usually includes a stable frame, a soft mattress and a protective fence. Some are also equipped with rocking functions, soothing music and sunshade designs to simulate the mother's arms, help babies fall asleep and soothe their emotions.

Product quality is crucial to baby cradles and directly affects the safety and health of babies. High-quality cradles should be made of non-toxic and environmentally friendly materials to ensure that no harmful substances are released, and have a sturdy structure to prevent overturning. In terms of design, the cradle must be ergonomic, provide correct body support for babies, and promote the healthy development of the spine and bones. In addition, the product should comply with relevant safety standards, such as the crib safety standards established by the U.S. Consumer Product Safety Commission (CPSC), to ensure structural safety and avoid risks such as pinching and suffocation.

Baby cradle definition

A human-powered baby bedding for infants under 5 months old or infants who are unable to sit, kneel or crawl, with an inner length of the bottom surface not exceeding 900 mm, which can rock and balance itself. It usually has a base with wheels, a rocking base, or any structure that can rock relative to a fixed base.

Inspection requirements for baby cradles

Material requirements

• All materials should be clean and free of stains.
• Wood, wood-based materials and materials of plant origin should be free from decay and insect infestation.
• Metal within areas that can be touched by infants should be made of anti-corrosion material or treated with anti-corrosion treatment.
• The content of migratable elements in accessible materials and surface coatings within the reachable area of ​​infants shall be lower than or equal to the maximum limit requirements of the corresponding elements in Table 1. When the surface has multiple layers of coatings or other substances of similar nature, the test sample does not include the base material.

Maximum limit of migratable elements in materials

• The textile materials used in baby cradles should comply with the requirements of GB 18401 Requirements for infant products.
• The flammability of textile materials used in baby cradles should comply with the flammability requirements of GB6675.
• The formaldehyde emission of wooden baby cradles should comply with the requirements of GB18584.

Structural requirements

Edges and protruding parts

The exposed edges and protruding parts of the cradle shall be chamfered and tested for burrs or sharp edges or points according to the sharp edge and sharp point test (see Figure 1). There shall be no open-ended tubes.

No protruding parts should be allowed in accessible areas.

Parts such as hinges, brackets and hooks shall be free from burrs or sharp edges or points when tested according to the sharp edge and sharp point test (see Figure 1).

NOTE: The minimum radii in Figure 1 do not apply to these parts.

hole

Any hole in the accessible area that can accommodate a 5 mm diameter slide gauge should also be able to accommodate a 12 mm slide gauge, unless the insertion depth is less than 10 mm.

For assembly holes, it should not be possible to insert a 7 mm diameter slide gauge during testing.

Small Parts

Any detachable or removable parts within the accessible area shall not be completely contained within the small parts tester (see Figure 2).

Ropes, cords and other elastic cords

Ropes, cords and other elastic ropes (excluding restraint systems) should comply with the relevant provisions of GB6675.

fastener

To facilitate the transportation and storage of the cradle, some parts can be removed or loosened. Directly fastened connecting screws, such as self-tapping screws, cannot be used.

Casters or rollers

Casters or rollers should not be installed except in the following two cases:

a) two lockable castors or rollers and two legs; or

b) Four lockable castors or rollers.

After being locked, the casters or rollers should be prevented from rolling. When tested according to the caster and roller test method, the casters or rollers must not be unlocked.

Swing mechanism

The rocking mechanism of the cradle shall be equipped with a locking device. When tested according to the locking device test method, a force of at least 50N shall be applied to release the locking mechanism and normal function shall continue to be maintained.

The rocking mechanism shall not be provided with electrical or mechanical power to rock or vibrate the cradle, but may be pushed or pulled directly by hand.

Locking mechanism for lifting side panels

When the lifting side panel is lifted, the mechanical device for controlling the lifting side panel shall be able to engage automatically, and its structure shall include the following:

a) a system that requires at least two separate actions operating simultaneously on different principles; or

b) a system which requires at least two consecutive actions operating on different principles, whereby the first action must be performed and maintained in order for the second action to operate; or

c) When testing according to the locking device test method, a force of at least 50N should be applied to release the locking mechanism of the lifting side panel.

Folding locking mechanism

If the cradle is designed to be foldable for storage or transportation, it should have a locking mechanism for the folding system.

The locking mechanism is used to prevent the cradle from accidentally folding while the baby is in the cradle, including the process of the baby being carried in and out of the cradle.

After the cradle is assembled, at least one locking mechanism operates automatically and its structure should include the following:

a) a system that requires at least two separate actions operating simultaneously on different principles; or

b) a system which requires at least two consecutive actions operating on different principles, whereby the first action must be performed and maintained in order for the second action to operate; or

c) When testing according to the locking device test method, a force of at least 50N should be applied to release the locking mechanism of the folding system.

A folding cradle should be equipped with at least two locking mechanisms. If there is one locking mechanism and the weight of the baby on the bottom fold has a positive effect on the locking, it can be equivalent to two locking mechanisms.

Side and end panels

During the test and during the load test of the vertical static load test, the internal height of the cradle side panels and end panels shall be at least 275 mm.

During the test, the actual diameter of the hole, the distance between any two structural components of the side plate and the end plate (the distance between the guide rod and the cradle column)

The minimum size is suitable for no-load test, and the maximum size is suitable for load test.

If the side panel is of mesh structure, the mesh holes should not be able to insert a 5 mm diameter slide gauge during testing.

The swinging body (component) of the cradle should be constructed in such a way that it will not injure the baby due to swinging.

The distance between the swing body (component) of the cradle and the cradle frame should be at least 25mm.

The distance between the guide rod of the lifting side panel and the cradle column should be 0mm~5mm or 12mm~25mm.

During the bending test and impact test, the structural components of the side panels and end panels should not be cracked, detached, or have a permanent deformation exceeding 2 mm.

Mounting and fastening devices shall be free from damage and separation and shall continue to function normally.

During the vertical static loading test, the structural components of the side panels and end panels shall not be cracked, deformed or suffer any other damage.

stability

During the stability test, the cradle should not tip over.

Bottom padding

Bottom pad thickness

Uncompressed underlay filling materials such as foam, fabric, etc. should not be more than 25 mm thick. The total thickness of the uncompressed underlay (including all fabric or vinyl layers) should not be more than 38 mm.

Bottom pad size

When the bottom mattress is placed against the side of the cradle, the resulting gap should not be greater than 25 mm.

Plastic bags or plastic film

Any plastic material used for packaging shall comply with the requirements for plastic bags or plastic films in GB6675 or shall be prominently marked as follows:

Word of warning:

"Remove the plastic cover before use to avoid the risk of suffocation.

Please destroy the plastic cover or keep away from babies and children."

Infant cradle inspection test method

General

• Unless otherwise specified, the locking mechanism of the cradle rocker (component) shall be locked.
• Unless otherwise stated, all force measurements are to an accuracy of ±5%, all masses to an accuracy of ±0.5% and all dimensions to an accuracy of ±1 mm.
• If the textiles on the cradle are removable, they shall be cleaned or washed twice according to the manufacturer's instructions before testing. If there are no manufacturer's instructions, the method of cleaning or washing shall be stated in the report.
• Before testing, the cradle should be assembled and placed in an indoor environment (15℃~25℃) for at least 48 hours before testing can begin.
• The cradle should be tested at room temperature (15℃~25℃).
• If the cradle is disassembled, it shall be assembled according to the instructions. If there are several different ways of assembly or combination, each test shall be carried out according to the most unfavorable method. The tests shall be carried out in sequence on the same specimen. The material test may be carried out on other specimens.
• The disassembled cradle should be assembled and tightened before testing and should not be re-tightened during the test.
• If the product is not designed to comply with the requirements of this test procedure, the test should be performed as described above as far as possible and the differences from this test procedure should be listed.

Test equipment

NOTE Unless otherwise specified, the test force may be applied by any suitable device, since the test results depend only on the correct method of applying the force and load and not on the device for applying the force.

Test weight A

The test weight is a hard cylinder with a diameter of 120 mm ± 5 mm and a height of 180 mm ± 5 mm, and a mass of 9 + 0

0.01 kg, and its center of gravity is at its geometric center. All edges are rounded with a radius of 5 mm ± 1 mm.

Test weight B

It weighs 20kg and has a distribution area of ​​approximately 150mm×300mm.

Slide gauge

It consists of a cone head made of plastic or hard, smooth material, mounted on a force measuring device (see Figure 3). There should be 6 types of cone heads with diameters of 5 mm, 7 mm, 12 mm, 25 mm, 45 mm and 65 mm. The tolerance of the cone heads with diameters of 5 mm, 7 mm, 12 mm, 25 mm and 65 mm is (0/-0.1) mm, and the tolerance of the cone head with diameter of 45 mm is (+0.1/0) mm.

Stopper

It can prevent the cradle from sliding but not from tipping over. Its height shall not exceed 12 mm. If some products are designed to use a higher stopper, in this case the minimum height that can prevent the cradle from sliding should be used.

If the stops are not suitable, any other suitable means may be used to prevent the cradle from sliding but not from tipping over.

Side impact hammer

Side impact hammer (see Figure 4): A cylindrical pendulum made of steel, with a rubber layer of hardness (76~78) IRHD on the head of the pendulum.

The center of gravity is 250 mm ± 2 mm from the center of fulcrum A. The position of the fulcrum should be fixed, and the impact point is 300 mm ± 1 mm from the swing fulcrum. The total mass is 2 kg.

Dynamometer

For example, a spring scale.

Sharp edge and sharp point testing

Check whether the exposed edges, screws, bolts, zippers and other accessories of the cradle are rounded or chamfered, and test them according to the sharp edge and sharp point method in GB6675.

Measurement

Measure the height of the side panels and end panels: Regardless of whether there is a bottom paving, put the bottom paving at the highest position and the side panels at the lowest position, and measure from the bottom

The interior height from the top of the deck to the lowest point on the top of the side panels.

Measure the diameter of the holes, the distance between any two structural parts of the side and end panels, the mesh diameter, the distance between the floor and the end (side) panels, and the distance between the floor openings or slats.

The slide gauge is pressed into holes, between structural members, meshes, between the floor deck and the end plate (side plate), between the floor deck opening or between adjacent slats with a specified force.

Place the test weight A horizontally on the most unfavorable position of the bottom pavement and repeat the above test.

Small parts testing

It shall be carried out according to the corresponding foreseeable reasonable abuse and small parts test methods specified in GB6675.

Ropes, cords and other elastic cords

Testing of ropes, cords and other elastic ropes shall be carried out in accordance with the corresponding test methods specified in GB6675.

Continuous load testing of the subsurface

Place test weight B in the center of the bottom surface and maintain for 168 h. The main axis of the load should be parallel to the main axis of the cradle.

Check for cracks, deformation, or any other damage.

Strength of structural components of side and end panels (bending test)

Place the cradle on flat ground with all feet blocked.

Use an appropriate force gauge.

Apply a force of 150 N to the middle slat or component and the end slat or component of each side panel and end panel in turn. Apply the force horizontally in the longitudinal and transverse directions of the cradle. The force acts on the midpoint of the top and bottom of the slat or component, and the force is maintained for 30 seconds.

Check for cracks, deformation, or any other damage.

Strength test of side panels, end panels, and corner structural components connecting side panels and end panels (impact test)

Note: This test is only applicable to cradles with side panels with an internal height greater than 400 mm.

Place the cradle on flat ground with all feet blocked.

If the cradle has strip-shaped side panels, install a side impact hammer and make the side impact hammer impact on the side panel structural components from both the inside and outside directions, with the impact position 200mm from the top of the side panel. Impact one strip from the outside, and the next strip from the inside, alternating in sequence. Test from the outside first, then from the inside.

If the cradle has integral side panels, impact 10 evenly distributed points on the side panels and 4 evenly distributed points on the end panels, alternating between the inside-outside direction and the outside-outside direction.

Let the side impact hammer fall freely from a horizontal position to impact the side panel slats or side panels, repeat 10 times, and then impact the next slat or the next point until all slats or all predetermined test points have been tested.

Adjust the side impact hammer to the same height as the corner post as possible (see Figure 6) and impact the side frame.

Free fall at 60° angle. Perform this test on each side panel component at each corner of the cradle. At each position, impact 5 times from the inside and 5 times from the outside.

Check for cracks, deformation, or any other damage.

Vertical static load test

Apply a vertical downward force of 200N to the cradle side panels and end panels at one quarter of their length and at the position most susceptible to failure for a total of 10 times. Each load should be maintained for at least 10 seconds.

Testing should be performed on all side panels and end panels of different constructions.

Check for cracks, deformation, or any other damage.

Stability test

Place the cradle on ground level with all feet blocked.

If the cradle has casters or rollers, adjust the casters and rollers to the most unfavorable position.

Secure the bottom deck in the highest position. Open the locking device of the swing mechanism.

Place test weight A in the most unfavourable position on the bottom deck against the long side panels.

Apply a horizontal force of 30N in the direction that the loaded side panel can overturn the cradle, applied perpendicular to the center line of the top edge of the cradle side panel. This horizontal force should be applied to the side panel that will rise (when the force is applied).

Check the bassinet to see if it has tipped over.

Locking device test

Open and lock the locking device 300 times continuously. Then, measure whether the force required to open the locking device is greater than 50N.

Caster and roller test

Place the cradle on a flat concrete floor and lock the casters and rollers.

Push the cradle and check that the locking mechanism prevents the casters or rollers from turning and that the locking mechanism opens.

Plastic bags or plastic film

The plastic bag or plastic film used to package the cradle shall be tested according to the method in GB6675.

Labeling and Instructions for Use Requirements

Logo

Product labeling should include the following:

a) Mark the product name, specifications and model of the cradle.

b) Mark the applicable age and weight of the cradle.

c) The name of the manufacturer, producer, seller, registered product name or trademark, and other additional means of identifying the product.

d) A warning similar to the following should be marked in a conspicuous location on the cradle: " Warning: Do not use this cradle when the infant is able to sit, kneel or crawl. "

e) A warning similar to the following should be marked in a conspicuous location on the cradle: " Warning: The cradle should be locked in a fixed position when left unattended. "

f) There shall be lines or other markings at least 200 mm below the top of the cradle side panels to indicate the height or thickness of the bottom bedding.

g) The number of the standard to which the cradle is applied.

h) Safety warning labels should be durable and permanently attached to the product.

Instructions

Instructions for use should be provided per individual product.

The instruction manual should have a similar reminder: "Important information, please save for future reference, please read carefully."

The instruction manual should contain the following contents:

a) The product name, specifications and model of the cradle, which should be consistent with those marked on the product.

b) The age and weight of the child that the cradle is suitable for.

c) Instructions for placing the product on level ground.

d) The instructions for use should include a warning similar to the following: " Warning: Do not leave an infant unattended while in the cradle. "

e) The instructions for use should contain a warning similar to the following: " Warning: The cradle should be locked in a fixed position when left unattended. "

f) The instructions for use shall contain a warning similar to the following: “ Warning: The cradle may only be used when the locking mechanism of the folding system is engaged. ”

g) There should be assembly drawings, parts lists and descriptions, assembly tools, illustrations of screws and other fasteners required.

h) If possible, it is recommended to clean and maintain the cradle regularly.

i) WARNING: Do not use this cradle if any parts are broken, damaged or missing.

j) The instructions for use should contain a warning similar to the following: " Warning: Do not use this cradle when the infant is able to sit, kneel or crawl. "

k) It should be stated that assemblies should be checked regularly to ensure correct tightening and that care is taken to ensure that there are no loose screws which could catch on the infant's clothing or body parts, creating a choking hazard.

l) The instruction manual should contain a warning similar to the following: “ Warning: Do not use this cradle without the stand. ”

m) The thickness of the bottom bedding should be selected to ensure that the internal vertical height of the cradle is at least 200 mm when the bottom bedding is in its highest position.

n) If the cradle is not provided with a bottom bedding, there should be recommendations on the specifications of the bottom bedding.

o) Warning: Avoid open flames and other strong heat sources such as electric sparks, gas flames, etc. near the cradle.

p) Warnings should be placed in a prominent position, easily identifiable, and indicate that failure to follow these warnings and instructions for use may result in serious injury or death.

q) The font size of safety warnings such as "Danger", "Warning" and "Attention" should be no smaller than size 4 boldface, and the font size of the warning content should be no smaller than size 5 boldface.