National Standard of the People's Republic of China GB 8383, 8384-87
Lock terminology and test method 1988—01—14 released 1988—07—01 implementation
Published by the National Bureau of Standards
Second, the lock test method
Test methods of the locks
UDC 683.3:001.4 GB 8384-87
This standard applies to iron (copper) padlocks, marble drawer locks, single (double) tongue marble door locks, bicycle locks for density, robustness, flexibility and surface quality testing.
1. Density 1.1 Number of different teeth of the key 1.1.1 Definition The number of teeth of different numbers is composed according to the number of bullet holes and the length of the round head.
1.1.2 Test method Check the burr to see if the number of different teeth meets the requirements.
Check the actual object, whether the number of marble holes and the length of the round head marble meet the requirements of the dental book.
N=ab.........................................................(1)
Where: N - the maximum number of teeth of the key;
A——round head marble difference;
b - the number of marble holes.
1.2 Reasonability of key tooth arrangement 1.2.1 Definition Whether the tooth flower is reasonable when the tooth book is arranged.
In the tooth book, it should be grouped and sorted out to remove the poorly-contained tooth. Any two key knives in each group of teeth are numbered, not less than two marbles. At the same time, pay attention to avoid the opening of the tooth and the same size of the tooth.
1.2.2 Test Method Check whether the denim book meets the definition requirements.
A random check of 50 objects, according to the definition requirements.
1.3 Round head marble differential 1.3.1 Definition The length difference of each round head marble.
1.3.2 Test method Measure the size of the round head marbles of different lengths and determine the step difference of the round head marbles.
In the absence of dissent, the level of the bottom of the tooth can also be measured instead of measuring the difference in the level of the ball.
1.3.3 Test tool 0~125mm vernier caliper (engraved value 0.02mm), 0~25mm first-order precision outer diameter micrometer (scale value 0.01mm) or fixture 0~10mm first-class accuracy dial indicator (scale value 0.01mm).
1.4 Inter-opening rate 1.4.1 Defines the percentage of times that are opened and the total number of trials opened.
1.4.2 Test method When testing, take the specified number of samples, grouped by five people, and open the trial number (the total test time does not exceed forty-five minutes).
1.4.3 Calculation method of mutual opening rate X=R/T(T-1)×100%..................................................
(2)
Where: X - mutual opening rate, %;
R - the number of times it was turned on;
T - the number of samples.
1.5 Safety Facilities 1.5.1 Definition Locks shall have structural means to enhance safety.
1.5.2 Test method a. Pull out: The lock should have pull-out prevention measures to increase the pull-out performance;
b. Anti-smashing: the locking tongue is extended, and after the operation knob is insured, it is pressurized with the specified mass. Under the condition of ensuring the effective length of the locking tongue, the mechanism should not fail;
c. Anti-saw: After the bolt is extended, the lock body is clamped, the bow is cut by hand, and the new steel saw blade is used to cut the tongue at the mouth of the lock tongue, which is not easy to be sawed;
d. Anti-drilling: Fix the lock on the 6mm platform drill, and use the φ6mm high-speed steel drill bit to drill from the key position, which should not be drilled;
e. Anti-unloading: The key is installed on the door, and the lock cannot be removed normally after the door is locked;
f. Safety chain: When the chain is not taken, the outside person cannot be removed and can withstand the specified static tension.
1.6 Locking cylinder groove centering degree 1.6.1 Definition The slotted keyway slotted curved part should approach or exceed the keyway centerline.
1.6.2 Test method Use a 0.2mm standard feeler gauge to test the plug parallel to the center line of the lock cylinder slot.
1.7 Shake the lock should be free of marbles 1.7.1 Definition When the lock is shaken, there should be no billows.
1.7.2 Test method After the key is normally pulled out, hold all the floating parts of the lock head and shake it in the direction of the bullet hole. There should be no marble sound (except for other noises).
1.8 Key Angle 1.8.1 Definition The angle at which the key deflects the key position when the key is reset and the lock is turned on.
1.8.2 Test method Install the lock on the tester, close the lock and then twist the key to open the lock. When the key is reset, measure the angle between the center line of the key and the position of the key.
2. Firmness 2.1 Durability 2.1.1 Definition The service life of the lock 2.1.2 Test method The lock is installed on the lock life tester through the clamp to simulate the use test. Insert the key to realize the lock beam, the lock tongue, the lock ring open and close, and the key is pulled out for one cycle. The total number of cycles measured is the service life. The test speed and the number of cycles are as required by the standard (a small amount of lubricant is allowed before the test, and the lubricant is added once every 10,000 times in the middle). When the lock can no longer be turned on, the service life is reached. If there is no test machine, it can be replaced manually.
2.2 Pulling force at the two screw joints of the lock head 2.2.1 Definition The internal thread of the lock head is connected to the screw for tensile strength.
2.2.2 Test method The lock is installed on the tensile machine through the clamp. When testing, the screw and the thread should avoid the three teeth, and the two screws should be stressed at the same time.
2.2.3 Test equipment 0~9800N tensile testing machine (accuracy 0%).
2.3 Handle and Knob Pull Force 2.3.1 Definition The handle (handle) knob is connected to the part of the pull resistance.
2.3.2 Test method Install the lock on the 0~9800N tensile machine (accuracy 0%) through the clamp to gradually increase the shaft pull force to the specified value.
2.4 Locking drive belt torque 2.4.1 Definition The lock head rotation bar is subjected to torque when it is rotated.
2.4.2 Test method Install the lock head on the torque machine through the clamp, pull out the key, twist the transmission rod, and gradually increase the force to the specified value (the clamp position is 6mm at the end of the transmission strip).
2.5 Key Button Moment 2.5.1 Definition Torque tolerated by the key.
2.5.2 Test method Install the lock head on the torque machine through the clamp, insert the key into the lock cylinder, and then pull out the 1.5~2mm, so that the lock cylinder can't rotate, and gradually increase the force to the specified value.
In the absence of a torque machine, the lever shackle code can be used instead.
2.6 Rigidity of riveted parts, welded parts and solid parts 2.6.1 Definition The degree of firmness of the riveted parts, welded parts and solid parts of the locks.
2.6.2 Test method Rive the joints, welds and solid parts through the clamp on the 0~9800N tensile machine, and gradually increase the force to the specified value along the actual direction of the force.
2.7 Axial static pressure after bolt safety 2.7.1 Definition After the bolt is insured (internal protection), gradually increase the force along the direction of expansion and contraction of the bolt, and the pressure of the bolt insurance and the tongue can withstand.
2.7.2 Test method The lock body is installed on the tensile machine or press of 0~9800N through the clamp (accuracy 1%), and gradually tightens the top of the bolt after the insurance to the specified value.
2.8 Lateral force of the bolt 2.8.1 Definition The force that the tongue can bear laterally (front and back).
2.8.2 Test method Install the lock body on the 0~9800N tensile machine or press through the clamp, 2.5mm away from the plane of the lock body, and gradually increase the force on the side of the lock tongue to the specified value.
2.9 Lock beam tensile force 2.9.1 Definition The tensile strength of the lock beam after closing.
2.9.2 Test method After the lock beam is closed, the lock is installed on the 0~9800N (accuracy 1%) tensile machine, and the lock beam is gradually applied to the specified value along the symmetrical center line of the lock beam.
2.10 Locking Torque 2.10.1 Definition Torque that the lock and housing connections can withstand.
2.10.2 Install the lock and the cover on the torque machine through the clamp, and gradually increase the force on the lock to the specified value (the torque is 1%).
2.11 Cylinder Block Pulling Force 2.11.1 Definition The lock cylinder block has tensile strength.
2.11.2 Test method Insert the key into the lock cylinder and rotate it by 90°, then install the lock and the key through the clamp on the 0~9800N (accuracy 1%) tensile machine, and gradually increase the force to the specified value.
2.12 Two positioning feet of the casing torque 2.12.1 Definition The two positioning feet of the casing are torsion resistance.
2.12.2 Test method The lock head is mounted on the torque machine through the clamp, and the key is inserted into the lock cylinder slot to gradually increase the key forward and reverse to the specified value (torque machine accuracy is 1%).
2.13 Pulling force of the mouth 2.13.1 Definition The degree of tightening of the sleeve on the lock case.
2.13.2 Test method The locks are mounted on the 0~9800N (accuracy 1%) tensile machine through the clamps, and the two sets of nozzles are gradually applied to the specified values ​​by the tangential direction of the lock ring.
2.14 Locking ring tension 2.14.1 Definition The bicycle locking ring has a tensile strength.
2.14.2 Test method The lock is installed on the 0~9800N (accuracy 1%) tensile machine through the clamp, and the lock ring is exposed to the lock casing part and gradually increases to the specified value along the symmetrical center line.
2.15 Composite board stiffness 2.15.1 Definition The bending resistance of the handle board.
2.15.2 Test method Tighten the inner and outer double-faced screws on the simulated door, and install the door on the 0~9800N precision 1%) through the clamp, and gradually increase the force to the specified value.
2.16 Locking box (plate) pulling force 2.16.1 Definition The locking box (plate) pull capacity.
2.16.2 Test method Install the lock box (board) on the 0~9800N (accuracy 1%) tensile machine through the clamp, and gradually increase the force to the specified value at the outer edge of the lock tongue.
3. Flexibility 3.1 Open flexibility 3.1.1 Definition The key slides in naturally, and the key rotates slowly along the lock core to the direction of the lock core slot, which can be smoothly inserted into the lock cylinder slot;
The lock cylinder is flexible to rotate, the key should rotate without rotation in the working range, and the lock can be opened and closed freely;
The key naturally bounces back, and after the straight-open lock is opened (the horizontal lock is unlocked, the bicycle lock is closed), the key is returned to the key position.
3.1.2 Test method: Take the key and follow the lock core, turn the key and insert it into the lock key slot; use the key to turn the lock core without the feeling of card rolling; after the lock core rotates, the lock tongue, lock beam and lock ring should be Jump out smoothly;
When the lock is turned on or off, the key can be naturally reset and the key can be removed smoothly.
3.1.3 Test Tools Hand tests or specialized equipment.
3.2 Key insertion force 3.2.1 Definition The maximum force required for the key to be inserted and removed from the lock cylinder slot.
3.2.2 Test method Install the lock on the key insertion force tester through the clamp, and correct the insertion and removal position of the key and the lock cylinder; then test and see the indication value of the indicator (allowing to repeat three times, one time is good) .
3.3 Flexible and reliable insurance 3.3.1 Definition The safety and reliability of the lock insurance mechanism.
3.3.2 Test method The insurance should be flexible by turning (or pulling) by hand; the simulated use case should be used for collision and shock test, and the insurance should have no failure.
3.3.3 Test tools Hand test or special equipment.
3.4 Locking force of the bolt 3.4.1 Definition The force required for the bolt to enter the lock box (plate) when the door is closed.
3.4.2 Test method The lock body and the lock box (plate) are installed on the test machine through the clamp, and the installation clearance of the lock body and the lock box plate should be 2.5±0.5mm, and the gradual afterburning is started when the two are not in contact. , press the lock tongue into the lock box (board) and see the indicator value.
3.5 Axial static pressure of the bolt 3.5.1 Definition The force required to press the bolt along the direction of expansion and contraction of the bolt to a specified position from the plane of the lock body.
3.5.2 Test method Install the lock body on the axial force measuring machine of the bolt through the clamp, and gradually apply pressure to the middle of the top end of the bolt until the bolt is pressed to the specified position from the plane of the lock body. Look at the indicator value.
3.6 Lock beam downforce 3.6.1 Definition The closing force required to press the lock beam into the lock beam bore.
3.6.2 Test method After the lock beam is opened, align the lock beam end with the lock beam hole and place it on the test machine to gradually increase the force on the top center of the lock beam until the lock beam is closed and see the indicator value.
3.7 Lock ring return 3.7.1 Definition The performance of the bicycle lock lock ring to open the reset under the action of the tension spring.
3.7.2 Test method When the lock is opened with a key, the lock ring should be able to reset to the specified position by itself. Allow to open three times. Take a good one 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 method Painted parts: tested according to the 29th group of GB 1720 "Method for Measuring Adhesion of Paint Film".
Electroplating parts: According to GB 5938 "Metal coating of light industrial products and chemical treatment layer corrosion resistance test method neutral salt spray test (NSS) method" test, evaluation method. According to GB 5944 "Evaluation of Corrosion Test Results of Metallic Coatings for Light Industrial Products".
Polishing, sanding, sandblasting, gold-cut workpieces, gold-cut sample plate point-of-sale readings comparison: shape geometry, with universal square, angle ruler and standard feeler projector.
4.2 Matching clearance between the bolt and the tongue. 4.2.1 Definition The difference between the aspect ratio of the tongue and the cross-sectional dimension of the bolt.
4.2.2 Test method The lock tongue is indented and extended on both sides of the gap. The plug is tested from the middle of the lock tongue with a specified feeler gauge. After being inserted, it can be dropped into the plug feeler.
4.3 Cylinder shoulder clearance 4.3.1 Definition The lock cylinder shoulder of the lock head and the lock core shoulder fit the clearance.
4.3.2 Test method Measure the maximum diameter of the cylinder bore shoulder minus the minimum diameter of the lock cylinder shoulder, which is the lock cylinder shoulder clearance.
4.3.3 Test tool 0~125mm vernier caliper (scale value 0.02mm)
4.4 Locking Dimensions and Mounting Center 4.4.1 Definitions Door lock, drawer lock lock outer diameter dimensions and edge to lock shaft size requirements.
4.4.2 Test method Use the depth vernier caliper to measure the distance from the lock tongue plane to the lock shaft center (the structure separating the lock head and the lock body, and measure the center line distance from the lock tongue plane to the drive rod hole).
4.5 The height of the lock beam jumps out and the length of the lock tongue extends. Lock ring size 4.5.1 Definition The distance between the end face of the lock beam and the plane of the lock body after the padlock beam jumps out;
The distance between the end of the bolt and the plane of the tongue;
When the bicycle lock lock ring is locked, it is deep into the lock body and the exposed length dimension after opening.
4.5.2 Test method Use 0~125mm vernier caliper (scale value 0.02mm) to measure the distance between the tongue end and the tongue plane; after the lock beam jumps out, use the standard feeler gauge to test the plug according to the specified value. Can fall down as a stuffing).
Lock the lock ring, use a stylus to mark the lock ring on the deep end, and then open the lock ring. Use a 0~125mm vernier caliper (scale value 0.02mm) to measure its in-depth dimensions and its exposed dimensions.
Additional information:
This standard was proposed by China Indoor Complete Products Corporation.
This standard is under the jurisdiction of the National Daily Hardware Standardization Center.
This standard is drafted by the lock detection room of Shanghai Daily Hardware Product Quality Supervision and Inspection Station.
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