The test methods specified in this standard shall be adopted when the detailed specifications of electromechanical components for electronic equipment within the scope of TC48 are required. They may also be adopted when the detailed specifications of similar components are required. GB/T 5095.8-1997 Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 8: Mechanical tests for connectors, contacts and terminals GB/T5095.8-1997 Standard download decompression password: www.bzxz.net

GB/T 5095.8-1997
This standard is equivalent to IEC512-8:1993 "Basic test procedures for electromechanical components for electrical equipment - Part 8, Electromechanical test for connectors, contacts and terminals", and is the first revision of GB 5095.8-86. This standard was proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Electromechanical Components for Electronic Equipment. This standard was drafted by the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Yu Yufang, Wang Qilong, Zhang Juhua and Shang Yutang. GB/15095.81997
IEC Foreword
1) IEC (International Electrotechnical Commission) is a worldwide standardization organization composed of national electrotechnical committees (IEC National Committees). The purpose of IEC is to promote international cooperation on standardization issues in the field of electrical and electronic equipment. For this purpose, among other activities, IEC publishes international standards. The formulation of international standards is undertaken by technical committees. Any IEC or national committee concerned with the content involved may participate in the formulation of international standards. Any international, governmental and non-governmental organization in contact with IEC may also participate in the formulation of international standards. 1) IEC maintains a close cooperative relationship with the International Organization for Standardization (ISO) under conditions agreed upon by the two organizations. 2) IEC's formal resolutions or agreements on technical issues are formulated by technical committees with the participation of national committees that are particularly concerned with these issues, and represent the international consensus on the issues involved as much as possible. 3) These resolutions or agreements are published in the form of standards, technical reports or guidelines and are recommended for international use. In this sense, they are recognized by national committees.
4) In order to promote international unification, IEC national committees have the responsibility to make their national and regional standards adopt IEC standards as much as possible. Any differences between IEC standards and corresponding national or regional standards should be indicated in the national or regional standards. International standard IFC512-8 was formulated by IFC/TC48 (electromechanical components and mechanical structures for electronic equipment). This third edition of the standard replaces the first edition published in 1984 and its amendment 1 (1985) and constitutes the technical revision. This standard is used together with Part 1: General (IEC 5121). The other test items included in the whole set of standards are given in Appendix A of IEC 512-1. The "General Plan". These test items will be published after they are formulated. The whole set of standards is expected to replace the test items of JEC 130-1. The text of this standard is based on the first edition of IEC 512-8 published in 1984 and Amendment 1 (1985) and the following documents DIS
48(C.(0).)317
48(C.))316
Voting Report
48(C. 0. )320
48(C.0.)323
Detailed information on the voting and approval of this standard can be found in the voting report listed in the table above. 1.1 Scope
National Standard of the People's Republic of China
Electromechanical components for electrnic equipmentBasic lesting procedures and mcasuring 'methodsPart 8: Connector tests (mechanical) and mechunicaltests on contacls and terninationsPart I General
GB/T5095.8-1997
idt IEC 512-8:1993
Replaces GB 5095.8—86
The test methods specified in this standard shall be adopted when detailed specifications of electromechanical components for electronic equipment within the scope of TC48 are required. They may also be adopted when detailed specifications of similar components are required. 1.2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is revised, the versions shown are valid. All standards will be revised. Each party using this standard should explore the possibility of using the latest versions of the following standards: GB1031-—83 Surface roughness parameters and their values ​​(idtISO1302:1978) GB/T5095.1—1997 Basic test procedures and measurement methods for electromechanical components for electronic equipment: Part 1: General (idLIEC512-1:1994)
GB/T5095.2—1997 Basic test procedures and measurement methods for electromechanical components for electronic equipment Method Part 2: General inspection, electrical continuity and contact voltage test, insulation test and voltage stress test (idtIEC512-2:1994) IFC68-2-21:1983 Environmental test procedures Test L: Strength of lead terminals and integral mounting parts EC352-1:1983 Solderless connections Part 1: General requirements for light-bake wrap connections. Test methods and guidelines for use Part II Connector mechanical tests
2.1 Test 15a: Fixation of contacts in insulating mounting plates 2.1. 1 The purpose of this standard is to establish detailed standard test methods to assess the ability of contact fixing mechanisms to withstand the directional stresses that may be encountered in normal use. TL:18 Technical Standard: Develops international standards for electronic devices, standard connectors and mechanical structures for electrical equipment and related devices. 1 R.F. connectors are not part of the national technical committee, so TC4D is developed together with R, F, and cables. 2 The safety requirements of sockets for components such as electronic components or electronic components shall be considered by the relevant technical committee. The safety requirements specified by other technical committees shall also apply.
Approved by the State Administration of Technical Supervision on December 26, 1997 and implemented on October 1, 1998
2.1.2 Preparation of test samples
GB/T 5095.8—1997
The test samples shall be assembled with all contacts in accordance with the provisions of the detailed specifications. Non-essential accessories of the contact fixing mechanism shall be loosened or removed. 2.1.3 Test method
Randomly select 20% of the contacts (but not less than 6) for testing, with at least one contact close to the edge and center of the component. When the number of contacts of the component is equal to or less than 6, all trace tests should be carried out. The axial force specified on the two squares of the contact should be increased steadily at a rate not exceeding 1/: to reach the specified value. It should be maintained for 10 seconds after the force reaches the maximum value. When the contact is in place on the fixing mechanism, the movement of the contact should be measured. When the force is applied and after the force is removed, the axial displacement of the contact relative to the insulating mounting plate should be specified in the detailed specification. 2.1.4 Final inspection
The test sample should be visually inspected in accordance with the provisions of test 1a of GB/T5095.2-1997. 2.1.5 Requirements
While applying the force and after removing the force, the axial displacement of the contact relative to the insulating mounting plate shall not exceed the specified value, and the contact shall not be damaged or loose enough to affect operation. 2.1.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens:
b) Installation of test specimens:
e) Force to be applied and its point of application;
d) Allowable displacement:
c) Differences from standard test methods. 2.2 Test 15b: Axial fixation of insulating mounting plate in housing 2.2.1 Purpose
To establish a detailed standard test method to evaluate the ability of the insulating mounting plate fixing mechanism to withstand the axial mechanical stresses that may be encountered in normal use.
2.2.2 Preparation of test specimens
The test specimens shall be prepared and installed in accordance with the detailed specification. Cables and accessories cannot be installed.
2.2.3 Test method
The specified axial force or test force should be applied successively to both ends of the insulation mounting plate, and the specified value should be increased steadily at a rate of about 50N/s or 5k1Pa/s, and maintained for 1min.
Note: When air pressure is used, there is a risk of contact and high-speed bursting of the insulation mounting plate. 2.2.4 Final inspection
The test sample is subjected to visual inspection (Test Ta of GB/T5095.2-1997). 2.2.5 Test
The insulation mounting plate should be particularly susceptible to damage to the operation of the components or deviation from the original position in the housing. 2.2.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens
b) Installation of test specimens
c) Required force or pressure, and its force point and method, ..com d) Differences from standard push-through test methods, GB/T 5095.8 1997
2.3 Test 15c: Torsional fixation of insulating mounting plate in enclosure 2.3.1 The
of January is to establish a detailed standard test method to assess the ability of the fixing mechanism of the insulating mounting plate to withstand the torsional stress that can be avoided in normal use.
Test specimen preparation
The test specimen shall be prepared and installed in accordance with the requirements of the detailed specification. Cable fire protection accessories shall not be installed.
2.3.3 Test method
Clamp the component enclosure and apply the specified torque to the insulating mounting plate using a suitable fixture, steadily increasing to the specified value at a rate of approximately 0.5N·m/s and maintaining for 1 min.
2.3.4 Final test
The test sample shall be subjected to visual inspection (Test 1a of GB/T5095,2--1997). 2.3.5 Requirements
There shall be no movement of the insulating mounting plate relative to the housing, e.g. movement causing permanent displacement that would be detrimental to the operation of the component. 2.3.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens;
h) Installation of test specimens; www.bzxz.net
c) Detailed specification of test fixtures;
d) Required torque and its method;
e) Requirements for final inspection;
What are the differences from the standard test method? 2.4 Test 15d: Insertion, release and withdrawal forces of contacts 2.4.1 This test is to establish a detailed standard test method to determine the forces required to insert a contact into the normal position of a component and to remove it from the normal position.
2.4.2 Preparation of test specimens
The test specimen shall consist of components and related contacts. All contacts shall be connected to the cables or wires specified in the detailed specification. All contacts except those used in the test shall be installed in advance. Cables and accessories should not be installed on the components. Make the locking mechanism in a loose position as much as possible. Install the components firmly in a suitable device and place them in a suitable position for testing. 2.4.3 Test equipment The test equipment should include: a) a suitable insertion and removal tool; h) a suitable device for fixing components: c) a suitable device for measuring force: 2.4.4 Test method Randomly select 20% of the contacts (but not less than 6) for testing. When the number of contacts of the component is equal to 6 or less, all should be tested. At least one contact is close to the edge and center of the component. 2.4.4.1 Insertion force Use a suitable method to measure the maximum insertion force.
..comGB/T 5095.8 1997
The inserter shall first bring the contact. Maintain axial alignment in the permitted manner and apply sufficient force to drive the contact into the normal position. This insertion force shall not exceed the value specified in the detailed specification. To ensure that the contact is normally engaged and locked 2.4.4.2 Release force and pull-out force
Measure the release force and pull-out force by appropriate methods. To release the contact, the upper tool shall be engaged with the contact in the normal way, while maintaining axial alignment. The release force shall not exceed the value specified in the detailed specification.
While maintaining axial alignment, apply sufficient force on the wire and (or) tool to pull or push the contact out of the component. The pull-out force shall not exceed the value specified in the detailed specification.
2.4.5 Final inspection
The test sample shall be subjected to visual inspection (test 1a of G13/T5095.2-1997). 2.4.6 Requirements
The product shall not produce any damage due to normal handling. 2.4.7 Details to be specified
Detailed specifications The following details shall be specified for this test: a) Preparation, installation and wiring of the test specimens; h) Suitable insertion and removal tools; c) Maximum insertion, loosening and withdrawal forces; d) Any differences from the standard test method. 2.5 Test 15e: Fixation of contacts in insulating mounting plate when cable is drooping 2.5.1 This test is a detailed standard test method to check the ability of the contact fixing mechanism of the component to withstand dynamic mechanical loads that may cause the contacts to move out of the component.
2.5.2 Preparation of test specimens
The contact under test shall be crimped onto the stranded steel cable and installed in the component. To prevent the cable from being pulled out of the contact during the test, it is necessary to add the cable ends by brazing, welding or soldering before connection. Unless otherwise specified in the detailed specification, two contacts should be tested in each component. The contacts should be tested individually.
2.5.3 Installation of test samples
The component should be installed on the appropriate test equipment, as shown in the example of Figure 1. The free component without mounting flange should be connected to the outer shell of the suitable fixing component. The specified weight should be at the free end of the cable: the weight is supported by the contact under test. The core cable should extend from the tail of the component at 45°±5° to the longitudinal axis of the optical operation. The component should be installed so that it can rotate around without any noise. 2.5.4 Weight
The weight M shall be selected to provide sufficient tension to carry out the test without deforming the test sample. Unless otherwise specified in the detailed specification, the weight shall be 1.4kg with an error of 2%. This weight has been proven to be satisfactory for the current component structure. 2.5.5 Explanation
The fixture shall rotate 360° with the weight supported by the contact piece under test. This constitutes a loop. The test sample shall withstand 100 cycles at a rate of 20 cycles per minute. 2.5.6 Requirements
The contact piece shall not leave its normal position and produce permanent displacement. 45+5
GB/T 5095.8---1997
Note: In this example, the component should be installed so that the axis XX in the figure remains in a vertical position when the mounting surface is rotated: Figure 1 Example of test equipment
2.5.7 Details to be specified
Detailed specification requirements The following details should be specified for this test: a) Contacts to be tested;
b) Detailed installation requirements;
c) Weight to be used, if different from 1.4 kg: d) Differences from the standard test method. 2.6 Test 15f: Effectiveness of connector connection device 2.6.1 The
standard test method is to assess the ability of a mating connector with a connecting device or a fastening device to maintain engagement when a specified force is applied to the connector on the cable or wire harness or housing. 2.6.2 Preparation of test samples
The test samples consisting of a mating pair shall be prepared and wired as specified in the detailed specification. The connector shall be mated in the normal manner using the connecting device and/or fastening device. If it is a threaded connector with a specified maximum connection torque, the maximum connection torque value shall be used. 2.6.3 Test method
2.6.3.1 Apply a specified force to the housing of the free end connector or in the axial direction of the cable or wire harness as specified in the detailed specification, and the mating connectors shall be separated.
The force shall be steadily increased at a specified rate to the specified value and maintained at this value for 15 seconds. 2.6.3.2 After the applied force is removed, the connectors shall be separated in the normal manner and tested in accordance with GB/T 5095. 2-1997 Test 1a is to be visually inspected.
2.6.3.3 Unless otherwise specified in the detailed specification, electrical continuity shall be monitored during the test. 2.6.4 Requirements
During the test of 2.6.3.1, the connector shall remain fully engaged. There shall be no electrical discontinuity. After the force is removed, the locking and unlocking of the connector's connecting mechanism (such as bayonet or push-pull connectors) shall be normal and reliable.
GB/T 5095.8-1997
After the test, the connection device shall be free of damage or looseness that may be detrimental to operation. 2.6.5 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens;
b) Type and size of cable or wire harness to be used (if specified); c) Axial force value and force application rate;
d) Points to apply axial force, such as housing, cable or wire harness; e) Any differences from the standard test method; f) Electrical monitoring (if necessary).
2.7 Test 15g: Attachment strength of protective cover
2.7.1 The purpose of
2.7.1 is to establish a detailed standard test method to assess the ability of the attachment strength of protective cover to withstand mechanical stress.2 Preparation of test samples
The protective cover shall be fixed to a suitable connector or a suitable fixture. 2.7.3 Test method
Unless otherwise specified in the detailed specification, a force shall be applied to the protective cover in each of the following directions: perpendicular to the axis of the protective cover (Figure 2);
parallel to the axis of the protective cover (Figure 3);
The force shall be increased steadily to the specified value. The rate of force application shall not exceed 45.V/s. The applied force shall be maintained for 5 minutes. 2.7.4 Final measurement
The test sample shall be visually inspected (Test 1a of GB/T 5095.2--1997). 2.7.5 Requirements
The fixing mechanism shall not break. The protective cover shall not separate from the connector or fixture. 2.7.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test:) Type of protective cover;
) Value of applied force;
c) Interval of applied force (2.7.3):
d) Differences from the standard test method. Suitable support
Direction of applied force
Direction of applied force
3.1 Test 15a: Detection of damage
3.1.1 Scope
Standard support
GB/T 5095.8—1997
F Direction of applied force
Figure 3 Direction of applied force
Part III Mechanical tests on contacts and terminals This tester is suitable for female contacts with elastic mechanisms to ensure contact, and the female contacts are used in conjunction with round male contacts. 3.1.2 The purpose of this test is to establish a detailed standard test method to verify that the elastic mechanism of the contact does not cause performance degradation due to the insertion of the specified test needle. 3.1.3 Test Article Install the female contact to be tested into the appropriate connector insulation mounting plate and lock it to prevent it from rotating during the test. Other methods can also be used to tighten the female contact, as long as the method does not support the contact to return to the test purpose. If there is a dispute, the test method for installing the contact into the insulation mounting plate of the relevant connector shall be used as the arbitration method. 3.1.4 Requirements for test pins The test pin shall meet the following requirements: a) The nominal diameter (B in Figure 1) shall be equal to the nominal diameter of the matching resistance fuse; 6) Unless otherwise specified, the length (A in Figure 4) shall be 3/4 of the minimum depth that can be drilled in the female contact; the end of the test pin shall be spherical; d) It shall be made of tempered steel; e) The surface shall be polished; f) The handle shall have sufficient weight M and length I. to provide the bending moment specified relative to the calibrated fulcrum, and a full semi-diameter chamfer shall be performed at the bottom of the test pin (see Figure 4) 3.1.5 Test method During the test, the axis of the female contact shall remain horizontal. The test pin specified in 3.1.4 is completely embedded in the female contact (see Figure 5). When the test pin and the female contact support the bending moment, the connector insulation mounting plate is slowly rotated 360° around its central axis to ensure that the end of the test pin can generate a uniform force on the entire inner wall of the female contact. When the length of the test pin is reduced by [/3], repeat this operation. Suitable gaskets can be used to reduce the effective length of the test pin. The minimum length L (as shown in Figure 4) is [0 times the test gauge length A: 3.1.6 Requirements
After this test, the test gate 6e (gauge retention force) test should be carried out and the requirements specified in the detailed specification should be met..com李山时刻
3. 1. 7 Details to be specified
GB/T 5095.8—1997
Figure 1 Test pin and handle
Ball installation question
Figure 5 Test gauge for insertion into female contact
Detailed specification requirements The following details shall be specified for this test: a) Size of test pin:
l) Value of applied bending moment:
c) Requirements for measuring retention force test;
d) Difference from standard test method, 3.2 Test 16b, restricted port performance
3.2.1 Scope
Does not test female contacts that are only applicable to restricted port types. 3.2.2, the purpose of the test
is to verify that oversized pins cannot be inserted into female contacts. 3.2.3 Test method
Use a standard test gauge of existing specified size.
3.2.4 Test requirements
Standard push test needle should not be able to enter the female contact. 3.2.5 Required provisions
Detailed specifications requirements The following details should be specified for this test: a) Detailed specification of the standard test instrument:
b) Value of the applied force
c) Any differences from the standard test method. 3.3 Test 16c: Bending strength of fusion
3.3.1 Scope
Open contact
Test needle
GB/T 5095.8--1997
This test is applicable to male contacts with a diameter of 1.2 mm and smaller. 3.3.2 Purpose
To establish a detailed standard test method to evaluate the ability of contacts to resist specified bending moments. 3.3.3 Preparation of test specimens
The preparation and installation of the test specimens shall be carried out in accordance with the provisions of the detailed specification. 3.3.4 Test method
3.3.4.1 Install the contact on a suitable surface and apply the force specified in the detailed specification as shown in Figure 6. The applied force shall be steadily increased to the specified value at the specified rate and maintained at Inmin. E & Minimum
Permanent deformation
L\ Total meshing length
Verification: Direction and point of application of force.
Figure 6 Example of bending strength of contact parts
3.3.4.2 Remove the load and measure the permanent deformation of the contact parts, that is, the difference between the initial position and the final position of the force application point as shown in Figure 6. 3.3.5 Requirements
After this test, the permanent deformation of the contact parts shall not exceed the value specified in the detailed specification. 3.3.6 Details to be Specified
The detailed specification shall specify the following details for this test: a) Number of test specimens to be tested: b) Preparation and installation requirements for test specimens; c) Points of force application relative to the fixture;
) Value of force to be applied; e) Rate of force increase:
[) Maximum allowable permanent variation of the contact; g) Any differences from the standard test method. 3.4 Test E6d: Tensile Strength (Crimp Connections) 3.4.1 The purpose of this test is to establish a detailed standard test method to evaluate the tensile strength of crimp connections. 3.4.2 Preparation of Test Specimens
The test specimens shall be contacts or terminations connected to the conductor ends. The preparation and installation of the test specimens shall be as specified in the detailed specification. The number of test specimens shall be specified in the detailed specification. If the contact or terminal has a cable insulation conduit, it should not produce mechanical action. 3.4.3 Test method
Clamp the tail of the test sample in the test head and apply tension. Be careful not to damage the positive connection of the contact or terminal. The tension should be along the axis of the connection. The head of the tension tester should move smoothly at a speed of 25mm/min to 50mm/min. Test each test sample separately until the conductor at one end is pulled off or the wire is broken. 3.4.4 Final test
The critical load value shall be measured.
3. 4.5 Requirements
CB/T 5095.8--1997
The critical load value shall not be less than the limit value specified in the detailed specification. 3. 4.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Number of test samples to be tested; b) Preparation of test samples: c) Specification, type and length of wire/conductor; d) Specification of tools, dies, adjusters and positioners; e) Minimum critical load +
f) Differences from the standard test method. 3.5 Test 16e: Measure the holding capacity of elastic contacts (elastic contacts) 3.5.1 Purpose
To establish a detailed standard test method to measure the fire resistance of elastic contacts using standard methods. 3.5.2--General requirements
The size and weight of the standard gauge to be used shall be specified in the detailed specification. 3.5.3 Test methods
3.5.3.1 Method A: Use of a single contact standard gauge a) Female contacts
For each male contact tested, the largest size standard push gauge shall be engaged and separated three times, and then the separation force standard gauge of the smallest size shall be used for testing.
ls) Male contacts
For each male contact tested, the smallest size standard push gauge shall be engaged and separated three times, and then the separation force standard gauge close to the largest size shall be used for testing.
3.5.3.2 Method B; Multiple Contacts Standard a) First, engage and disengage the component three times using the stable dimension standard. b) Then, test each test contact using a single contact separation force standard. 3.5.4 Test Requirements
The test contact shall be able to support the weight of any vertically downward contact separation force standard. 3.5.5 Details to be Specified
Detailed Specification Requirements The following details shall be specified for this test: a) The preparation and installation method of the test sample, and whether the contact is to be wired, etc.; b) The number of stable dimensions, if different from three times: c) The number of contacts to be tested,
d) Details of the standard test fixture to be used; e) Any differences from the standard test method, 3.6 Test 16f: Terminal Strength
The purpose of 3.6.1 is to establish a detailed standard test method to assess the ability of the terminal to withstand mechanical stresses that may occur during normal assembly operations. 3.6.2 Test method
The lead-out terminal shall be tested according to the method of test U of IEC68-2-21. 3.6.3 Final test
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.