GB 8383, 8384-87
Nomenclature and test methods of the locks
Issued 1988-01-14 1988-07 -01 Implementation
National Bureau of Standards issued
II. Test methods of the locks
Test methods of the locks
UDC 683.3:001.4 GB 8384-87
This standard applies to iron (Copper) padlocks, bullet drawer locks, single (double) tongue bullet door locks, self
The locks of the insurance density, firmness, flexibility and surface quality of the test.
1, density
1.1 key different tooth number
1.1.1 Definition
According to the number of bullet holes and the number of rounded bullets length of the number of different numbers of tooth number.
1.1.2 Test Methods
Check the floss thin to see if the different floss numbers meet the requirements.
Check the physical object, the number of holes in the bullet and the number of lengths of rounded bullets to see if the number of flowers meets the requirements of the flower book.
N=ab........................... .............................. ......(1)
In the formula: N - the maximum number of key tusks;
a - the number of round-ended bullet grade difference;
b - the number of bullet holes.
1.2 Reasonableness of key flossing arrangement
1.2.1 Definition
Whether the flossing is reasonable when the floss book is arranged.
In the dental flower book, it should be arranged in groups and eliminate the dental flowers with poor confidentiality. Any
Two key tooth flower number in each group of tooth flower, not less than two bullet level difference value. At the same time, pay attention to avoid borrowing teeth to open
and the same number of tooth flower.
1.2.2 test method
Check the tooth flower book to see if it meets the definition of the requirements.
Sampling physical 50, according to the definition of the requirements against.
1.3 round head bullet level difference
1.3.1 Definition
The length difference of each level of round head bullet.
1.3.2 Test Methods
Measure the dimensions of round head slugs of different lengths to find the value of the grade difference of round head slugs.
In the absence of objection, the bottom of the tooth flower can also be measured instead of measuring the round head slug grade difference value.
1.3.3 test tools
0 ~ 125mm vernier caliper (scale value 0.02mm), 0 ~ 25mm first-class precision micrometer (scale
value of 0.01mm) or fixture 0 ~ 10mm first-class precision percentile meter (scale value 0.01mm).
1.4 Interopening rate
1.4.1 Definition
The percentage of the number of times opened and the total number of tries opened.
1.4.2 Test Methods
The test, take a specified number of samples, by five people grouped together, open the full number of trial openings (the total test time
not more than forty-five minutes).
1.4.3 Calculation method of interopening rate
X=R/T (T-1) x 100% .................. .............................. ........
(2)
The formula: X - mutual opening rate, %;
R - the number of times it was opened;
T - the number of sampling .
1.5 Safety facilities
1.5.1 Definition
Locks should have structural devices to enhance safety.
1.5.2 Test Methods
a. Anti-pulling: locks should have anti-pulling measures to increase the anti-pulling performance;
b. Anti-picking: the lock tongue extends, after manipulating the knob insurance, pressurized with the specified mass, in order to ensure that the lock
tongue effective length of the conditions of the body should not fail;
c. Anti-sawing: the lock tongue extends, clamped to the lock body, with a Handsaw bow, using a new hacksaw blade in the lock tongue
mouth side of the lock tongue saw, not easy to saw off;
d. Anti-drilling: the lock is fixed on the 6mm table drill, with φ6mm high-speed steel drill bit from the key position
trial drilling, it should be drilled impermeable;
e. Anti unloading: the key is mounted on the door, the door can not be unloaded normally after the door is locked;
f. Safety chain: the chain cannot be removed by a person outside when it is not taken down, and can withstand the specified static pull
force.
1.6 Degree of center of lock cylinder slot closure
1.6.1 Definition
The curved portion of the key cylinder key slot slot shall be close to or over the key slot centerline.
1.6.2 Test method
With 0.2mm standard ruler parallel to the center line of the lock cylinder slot test plug, should not be plugged.
1.7 Shaking the lock should be no bullet sound
1.7.1 Definition
Shaking the lock, there should be no bullet sound.
1.7.2 Test method
After the key is pulled out normally, snap all floating parts of the lock, and shake the lock in the direction of the bullet hole, there should be no bullet
rattling sound (except for other noises).
1.8 key angle
1.8.1 Definition
Lock open, the key reset when the key is stationary, the key deflection of the position of the key extraction angle.
1.8.2 test method
Lock installed in the tester, the lock is closed and then twist the key to open the lock, until the key reset
position of the key at rest, measure the key center line and the key position of the angle.
2, firmness
2.1 Durability
2.1.1 Definition
Lock life
2.1.2 Test Methods
The lock will be mounted on the lock life tester through the fixture, and the test will be made by simulating the usage. Insert the key
key to realize the lock beam, lock tongue, lock ring open and close, the key is pulled out for a cycle
number. The total number of cycles measured is the service life. Test speed and the number of cycles according to standard requirements
(before the test allows a small amount of lubricant, halfway through every 10,000 times to clean up and add lubricant once). When the lock
can no longer open, that is, to reach the service life. If there is no test machine can be replaced by hand.
2.2 Lock head two screws connected to the tension
2.2.1 Definition
Lock head internal threads and screws connected to the tensile strength.
2.2.2 Test Methods
The lock will be installed in the tensile machine through the fixture, the test screws and threads should be avoided to groove the three
tooth, the two screws should be stressed at the same time.
2.2.3 Test equipment
0~9800N tensile testing machine (precision 0%).
2.3 Handle, knob tensile force
2.3.1 Definition
Handle (handle) knob connecting part of the tensile capacity.
2.3.2 Test Methods
The lock will be installed in the 0 ~ 9800N fixture on the pulling machine (accuracy of 0%) and gradually add the shaft pulling force
to the specified value.
2.4 Lock drive bar torque
2.4.1 Definition
The lock rotating bar is subjected to torque when it rotates.
2.4.2 Test method
Mount the lock head on the torque machine through the fixture, pull out the key, twist the transmission bar, and gradually add the force
to the specified value (the clamping position is at the end of the transmission bar at the end of 6mm).
2.5 Key button torque
2.5.1 Definition
The torque that the key bears.
2.5.2 Test method
The lock is installed on the torque machine through the fixture, the key is inserted into the lock cylinder, and then pulled out 1.5~2mm,
so that the lock cylinder can not be rotated, and the force is gradually added to the specified value.
In the absence of torque machine can be used instead of lever hanging weights.
2.6 riveted parts, welded parts, solid parts firmness
2.6.1 Definition
Lock on the riveted parts, welded parts, solid parts firmness.
2.6.2 Test method
Riveted, welded, solid parts through the fixture installed in the 0 ~ 9800N tensile machine, along the actual
The direction of the force is gradually added to the specified value.
2.7 Axial static pressure after latch insurance
2.7.1 Definition
After the latch insurance (internal security), along the direction of expansion and contraction of the lock tongue gradually add force, the latch insurance and the lock tongue can
withstand the pressure.
2.7.2 test method
Lock body through the fixture mounted on the 0 ~ 9800N tensile strength machine or press (precision 1%), the insurance
after the top of the lock tongue gradually add force to the specified value.
2.8 Lateral force of the latch
2.8.1 Definition
The force that can be withstood by the latch sideways (front and back).
2.8.2 Test method
The lock body is mounted on the 0~9800N tensile strength machine or press through the fixture, and the force is gradually applied to the side of the lock tongue to the specified value at the distance of 2.5mm from the plane of the lock body
.
2.9 Lock beam tensile force
2.9.1 Definition
Lock beam closed tensile capacity.
2.9.2 Test method
After the locking beam is closed, install the locking device on the 0~9800N (accuracy 1%) tensile strength machine, and gradually add force to the locking beam along the symmetrical
center line of the locking beam to the specified value.
2.10 Lock connection torque
2.10.1 Definition
The torque that can be withstood by the lock and cowling connectors.
2.10.2 Mount the lock and casing on the torque machine through the fixture, gradually apply force to the lock, and torque
to the specified value (1% accuracy of the torque machine).
2.11 Cylinder stopper tensile force
2.11.1 Definition
Cylinder stopper tensile capacity.
2.11.2 Test method
Insert the key into the lock cylinder, rotate it 90°, and then install the lock and the key through the fixture on the
0~9800N (accuracy 1%) tensile machine, and then gradually add the force to the specified value.
2.12 Hood two positioning feet torque
2.12.1 Definition
Hood two positioning feet torsion resistance.
2.12.2 Test method
Lock is installed on the torque machine through the fixture, the key is inserted into the slot of the lock cylinder for the key in the forward and reverse
Gradually add force to the specified value (torque machine accuracy of 1%).
2.13 Nozzle tension
2.13.1 Definition
The degree of fastening of the nozzle on the lock case.
2.13.2 Test method
The lock is mounted on the 0~9800N (1% accuracy) tension machine through the fixture, and the force is gradually applied to the two sets of nozzles in the direction of the tangent of the locking ring
to the specified value.
2.14 Lock ring pulling force
2.14.1 Definition
The tensile strength of bicycle lock ring.
2.14.2 Test method
The lock is mounted on 0~9800N (accuracy 1%) tensile strength machine through the fixture, and the force is gradually applied along the symmetrical center line on the part of the locking ring that is exposed to the locking case
to the specified value.
2.15 Compound plate firmness
2.15.1 Definition
The bending resistance of the handle compound plate.
2.15.2 Test Methods
The inner and outer sides of the plate screws tightened in the simulation of the door, through the fixture will be mounted on the door in the 0 ~ 9800N
(precision 1%) tensile machine, the handles of the gradual addition of force to the specified value.
2.16 Latch box (plate) tension
2.16.1 Definition
Latch box (plate) tension capacity.
2.16.2 Test Methods
Lock box (plate) through the fixture installed in the 0 ~ 9800N (precision 1%) tensile strength machine, the tongue
mouth of the outer edge of the gradual addition of force to the specified value.
3, flexibility
3.1 open flexible
3.1.1 Definition
The key naturally slides in, the key slowly rotates along the lock core nest to the same direction of the lock core groove, and can be inserted into the lock core groove smoothly
;
the lock core rotates flexibly, and the key rotates in the working range should be free of stagnation, playing rolling, and the locks open off <
Close freely;
The key naturally pops back, straight open locks open (horizontal open locks, bicycle locks closed) the key itself
Return to the position of the key puller.
3.1.2 Test Methods
Take the key in hand and follow the lock core nest, turn the key can be smoothly inserted into the key slot of the lock core; use the key to turn
The lock core should be free of jamming sensation; after the lock core is rotated, the locking tongue, the lock beam, the lock ring should be smoothly jumped out;
The key can be naturally reset when the lock is turned on or off and the key can be smoothly pulled out.
3.1.3 test tools
Hand test or specialized instruments.
3.2 Key Insertion and Removal Force
3.2.1 Definition
Maximum force required for key insertion and removal from the cylinder slot.
3.2.2 Test method
The lock is mounted on the key insertion and extraction force tester through the fixture, and the insertion and extraction
position of the key and the lock cylinder is corrected; and then the test is conducted to see the value of the oscillator (it is allowed to repeat the test three times, and a good one is considered as the standard
qualified).
3.3 Insurance flexible and reliable
3.3.1 Definition
Lock insurance mechanism, the force required to manipulate and the degree of reliability.
3.3.2 test method
Turning by hand (or pull) insurance should be flexible; simulate the use of collision shock test, insurance
insurance should not fail.
3.3.3 Test tools
Hand test or special equipment.
3.4 Cam closing force
3.4.1 Definition
The force required for the latch to enter the latch box (plate) when the door is closed.
3.4.2 Test Methods
The lock body and latch box (plate) through the fixture installed in the test machine, the lock body and latch box
(plate) installation gap should be 2.5 ± 0.5mm, in the two do not touch the state of the two began to gradually add
Force, the tongue will be pressed into the lock lock box (plate), look at the oscillator display value.
3.5 lock tongue axial static pressure
3.5.1 Definition
along the direction of expansion and contraction of the lock tongue to the lock body from the plane of the required force.
3.5.2 test method
Lock body through the fixture mounted on the lock tongue axial force machine, and gradually on the top of the lock tongue in the middle of the pressure
Force, until the lock tongue is pressed to the lock body from the plane of the specified position. Look at the value of the digitizer.
3.6 Lower pressure of lock beam
3.6.1 Definition
The closing force required to press the lock beam into the lock beam hole.
3.6.2 Test method
After the lock beam is opened, align the end of the lock beam with the lock beam hole, put it on the tester and add force to the top center of the lock beam step by step
until the lock beam is closed, and see the value of the indicator.
3.7 Lock ring reset
3.7.1 Definition
The performance of the bicycle lock lock ring to open and reset under the action of the tension spring.
3.7.2 Test Methods
When the lock is opened with the key, the lock ring shall be able to reset itself to the specified position. Allowed to open three times. Take
One good time as the standard.
4, appearance
4.1 surface quality
4.1.1 Definition
Refers to the surface quality of the lock head, lock body, lock tongue, key, handle, knob, etc..
4.1.2 Test Methods
Painted parts: according to GB 1720 "Paint Film Adhesion Determination Method" Group 29 test.
Electroplated parts: tested according to GB 5938 "Corrosion Resistance Test Method for Metal Plating and Chemical Treatment Layer of Light Industrial Products
Method Neutral Salt Spray Test (NSS) Method", and the evaluation method. Evaluated according to GB 5944 "Evaluation of corrosion test results of metal plating of light industrial products
Products".
Polished, sanded, sandblasted, gold-cutting processed parts, with gold-cutting samples sheltered point reading table control: shape
geometric dimensions, with a universal angle ruler, angle ruler and standard plug gauge projector test.
4.2 lock tongue and latch mouth clearance
4.2.1 Definition
Latch mouth longitudinal and transverse dimensions and the difference between the longitudinal and transverse dimensions of the latch section.
4.2.2 test method
Measurement of the lock tongue indentation, extend the gap between the two sides, with the provisions of the ruler from the lock tongue in the middle of the test plug, plugged in and
could be in the ruler under the action of the weight of the drop as plugged in.
4.3 Cylinder shoulder clearance
4.3.1 Definition
Lock cylinder hole shoulder and cylinder shoulder clearance.
4.3.2 Test method
Measuring the maximum diameter of the shoulder of the lock cylinder hole minus the minimum diameter of the shoulder of the lock cylinder, that is, the shoulder of the lock core
gap.
4.3.3 Test tool
0~125mm vernier caliper (scale value 0.02mm)
4.4 Lock head dimensions and installation center
4.4.1 Definition
Door locks, locks, drawer locks, locks, head profile diameter dimensions and the edge of the head to the center of the lock axis dimensions required.
4.4.2 test method
The depth of vernier calipers to measure the lock tongue mouth plane to the lock axis distance (for the lock, the lock body is separated
structures, measure the lock tongue mouth plane to the centerline of the transmission bar hole distance).
4.5 The height of the lock beam jumping out, the length of the lock tongue outstretched. Lock ring switch size
4.5.1 Definition
Padlock lock beam jumped out, the distance between the end face of the lock beam and the plane of the lock body;
The distance between the end of the lock tongue and the plane of the lock tongue mouth;
Bicycle lock lock ring locking deep into the body of the lock and the exposed length after the opening of the length of the size.
4.5.2 test method
With 0 ~ 125mm vernier caliper (scale value of 0.02mm) to measure the distance between the end of the locking tongue and the lock tongue mouth plane
Distance; lock beams jumped out of the standard plug with a standard ruler in accordance with the specified value of the test plug (plugged in the plug in the plug under the action of the ruler of the self-weight
Can be dropped as plugged in).
Lock the lock ring closed, with a needle in the deep end of the lock ring on the mark, and then open the lock ring. Use
0~125mm vernier calipers (scale value 0.02mm) to measure its deep size and its exposed size.
Additional Notes:
This standard is proposed by China Indoor Sets Corporation.
This standard by the National Center for Standardization of Household Hardware under the centralization.
This standard is responsible for drafting by the Shanghai Daily-use Hardware Product Quality Supervision and Inspection Station locks testing room.