CN101644733A - Fixture for testing precise printed circuit board - Google Patents
Fixture for testing precise printed circuit board Download PDFInfo
- Publication number
- CN101644733A CN101644733A CN200810131336A CN200810131336A CN101644733A CN 101644733 A CN101644733 A CN 101644733A CN 200810131336 A CN200810131336 A CN 200810131336A CN 200810131336 A CN200810131336 A CN 200810131336A CN 101644733 A CN101644733 A CN 101644733A
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- printed circuit
- circuit board
- fixture
- detection
- elastic component
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Abstract
The invention relates to a fixture for testing a precise printed circuit board, which comprises a detection tube, a second detection part and a first detection part, wherein the detection tube is provided with a hollow accommodating chamber of which the inside is provided with a second elastic part, and is electrically connected with a second detection line; the second detection part is arranged in the hollow accommodating chamber of the detection tube, is provided with a second accommodating chamber and an opening, and is pressed against the second elastic part; the first detection part comprises an inner sleeve, a first elastic part and a probe; the inner sleeve is pressed against the second accommodating chamber, and is provided with a first accommodating chamber; the first elastic partis arranged in the first accommodating chamber; the probe is arranged in the first accommodating chamber, and is pressed against the first elastic part; and the first detection part is electrically connected with a first detection line. Thus, the fixture can achieve the aim of being suitable for the line detection of a micro-resistor printed circuit board, and actively avoids the loss brought bythe sequentially wrong insertion of electronic components for defective printed circuit boards.
Description
Technical field
The present invention refers to a kind of detection at circuit board line especially relevant for a kind of measurement jig, can make circuit board can finish test accurate, really before the electronic package of pegging graft, and have the fixture for testing precise printed circuit board of guaranteeing the circuit board line quality.
Background technology
Existing printed circuit board (PCB) (PCB, printed circuit board) after making, also need pass through trace routine, whether to detect this printed circuit board (PCB) is certified products, if fail the unacceptable product of printed circuit board (PCB) is detected, treat to find that just circuit can't operate after this printed circuit board (PCB) plugs electronic package, then the loss that is caused will be responsible for by printed circuit board (PCB) manufacturer, make the detecting operation of this printed circuit board (PCB) become more important; Existing printed circuit board test tool as shown in Figure 1, it mainly is provided with relative tool seat 91 on test machine 90, be respectively equipped with several detector tubes 92 on the described tool seat 91 and be positioned at the probe 93 of this detector tube 92, this probe 93 is subjected to a spring 94 of being located in this detector tube 92 to replace and protrude out outside this tool seat 91, moreover, this probe 93 is electrically connected a lead-in wire 95, in order to connect a voltmeter (figure does not show).Whether normally and existing printed circuit board test tool is a little 101 (PAD) that connect that this probe 93 are contacted with a printed circuit board (PCB) 100 when detecting, connect a little (open circuit/short circuit of 101 circuits to detect two; And then judge whether this printed circuit board (PCB) 100 is certified products OPEN/SHORT) and little resistance.
Well known, the design of existing printed circuit board (PCB) is increasingly sophisticated and accurate, when the printed circuit board circuitry of being tested belongs to low resistance, little resistance, lead resistance of testing and contact resistance will form disturbing factor and can't ignore, make the two wires connection test resistance mode of existing printed circuit board test tool be difficult to correctly or precisely test, and then cause the correct disappearance problems of judging such as difficulty of printed circuit board (PCB) certified products, necessity of solving, overcoming is really arranged as quickly as possible.
Edge this, the inventor is not because attain the desirable fact on its disappearance problem that detects of aforementioned existing printed circuit board test tool and the structural design thereof, this case inventor promptly sets about its solution of research and development design, hope can be developed a kind of fixture for testing precise printed circuit board that has more correctness, accuracy, to promote the development of this industry, satisfying through for a long time design has generation of the present invention.
Summary of the invention
The objective of the invention is, a kind of fixture for testing precise printed circuit board is provided, its printed circuit board circuitry that can be applicable to little resistance detects, and have correctness and the accuracy that the printed circuit board (PCB) certified products are tested, and can thoroughly improve the disappearance problem that its two wires of existing printed circuit board test tool connects the little resistance mode of test.
The present invention is in order to reach above-mentioned purpose and effect, the technological means that it adopted is: a kind of fixture for testing precise printed circuit board comprises: a detector tube has a medium altitude chamber, be provided with one second elastic component in this medium altitude chamber, this detector tube is electrically connected with one second detection line; One second detection piece is located in this medium altitude chamber of this detector tube, and this second detection piece is provided with one second room and opening, and this second detection piece is subjected to replacing of this second elastic component; One first detection piece includes an inner sleeve, first elastic component and probe, and this inner sleeve supports and is located in this second room, and this inner sleeve is provided with one first room, and this first elastic component is located in this first room; This probe is located in this first room and is subjected to replacing of this first elastic component, and this first detection piece is electrically connected with one first detection line.
The invention provides another kind of fixture for testing precise printed circuit board, comprising: two tool devices, this tool device includes a detector tube, and this detector tube is electrically connected with one second detection line; One first detection piece is located in this detector tube, and this first detection piece is electrically connected with one first detection line; One voltmeter connects this 2 first detection line respectively; Certain current and power supply connects this 2 second detection line respectively; One printed circuit board (PCB) includes two at least and connects a little, and this two connects a little and connect mutually with this two tools device respectively.
By utilizing above-mentioned fixture for testing precise printed circuit board of the present invention, make it meet the application that four lines connect the test resistance principle, and can be to the low resistance of existing accurate printed circuit board (PCB), little resistance circuit carries out precision, test accurately, make printed circuit board (PCB) before the electronic package of pegging graft, can correctly finish the judgement of certified products test, and thoroughly solve, improve existing measurement jig technology its difficulty that faces and defective, simultaneously can actively avoid the erroneous judgement of printed circuit board (PCB) unacceptable product, and can actively avoid the follow-up mistake row of printed circuit board (PCB) unacceptable product electronic package to plug the loss that is brought.
Description of drawings
Fig. 1 is existing printed circuit board test tool synoptic diagram.
Fig. 2 is a test machine synoptic diagram of the present invention.
Fig. 3 is a tool device decomposing schematic representation of the present invention.
Fig. 4 is tool device combination synoptic diagram of the present invention.
Fig. 5 is a tool device to test operation chart of the present invention.
Fig. 6 is a tool device to test function circuit synoptic diagram of the present invention.
[primary clustering symbol description]
Test machine 1 tool seat 11 tool rooms 12
Second elastic component, 22 second detection lines, 23 second detection pieces 30
Second room, 31 openings, 32 first detection pieces 40
First elastic component, 42 probes, 43 first detection lines 44
Printed circuit board (PCB) 50 connects a little 51,52 voltage sources 61
Decide current and power supply 62
Embodiment
For technology of the present invention, feature and the effect reached are more had further understanding and understanding, careful assistant cooperates with preferred embodiment and accompanying drawing and describes in detail, illustrate as after:
See also Fig. 2, fixture for testing precise printed circuit board of the present invention includes a tool device 10, this tool device 10 is located on the test machine 1, be used for testing open circuit/short circuit (OPEN/SHORT) and little resistance of a printed circuit board (PCB) 50, wherein this test machine 1 is provided with relative tool seat 11, this tool seat 11 is provided with in order to several tool rooms 12 of this tool device 10 to be set, and makes this tool device 10 be able to facility this printed circuit board (PCB) 50 is carried out the detection that circuit is very denied.
See also Fig. 3, Fig. 4, this tool device 10 includes a detector tube 20, second detection piece 30 and first detection piece 40; These detector tube 20 location are located in this tool seat 11 tool room 12 of (figure does not show), and it is the cylindrical shell with a medium altitude chamber 21, is provided with one second elastic component 22 (as spring) in this medium altitude chamber 21, and this detector tube 20 is connected with one second detection line 23; This second detection piece 30 is provided with one second room 31 and opening 32 (as sleeve), this second detection piece 30 is located in the medium altitude chamber 21 of this detector tube 20, and be subjected to replacing of this second elastic component 22 and can in this detector tube 20, carry out expanding-contracting action, in suitable mechanism design, this second detection piece 30 is in being located at this detector tube 20, can not be subjected to replacing of this second elastic component 22 and detaches this detector tube 20; This first detection piece 40 includes an inner sleeve 41, first elastic component 42 and probe 43, this inner sleeve 41 supports to be located in second room 31 of this second detection piece 30, this inner sleeve 41 is provided with one first room 411, the periphery of this inner sleeve 411 is provided with an insulation course 412, in order to produce insulating effect, promptly 30 of this inner sleeve 41 and this second detection pieces form insulation; This first elastic component 42 (as spring) is located in first room 411 of this inner sleeve 41; This probe 43 is located in first room 411 of this inner sleeve 41, and be subjected to replacing of this first elastic component 42 and protrude out the opening 32 of this second detection piece 30, and can in this inner sleeve 41, carry out expanding-contracting action, in suitable mechanism design, this probe 43 is in being located at this inner sleeve 41, can not be subjected to replacing of this first elastic component 42 and detach this inner sleeve 41, this first detection piece 40 is connected with one first detection line 44.
See also Fig. 5, application operating in order to explanation fixture for testing precise printed circuit board of the present invention, these adjacent two groups of tool devices 10 connect the some wireline inspection between 51,52 (PAD) in order to this printed circuit board (PCB) 50 is carried out two, first detection line 44 of this two tools device 10 links a voltage source 61 (as voltmeter), and second detection line 23 of this two tools device 10 links certain current and power supply 62 (Constant CurrentPower Supply, constant current source); As shown in the figure, when this printed circuit board (PCB) 50 presses down, the probe 43 of this first detection piece 40, second detection piece 30 will compress this first elastic component 42, second elastic component 22 respectively and press down, this moment since this probe 43 and second detection piece 30 51,52 contact with connecting a little of this printed circuit board (PCB) 50 simultaneously, (2 connect and decide current and power supply can to utilize four lines to connect the test resistance principle, 2 connect voltage source) do test, reach the effect of the little resistance of precision measurement, in order to this printed circuit board (PCB) of accurate judgement 50 its two connect 51,52 circuits a little normally whether.
Certainly, in aforementioned test mode, connect a little 51,52, can reach it equally and test effect if press down with what contact this printed circuit board (PCB) 50 with this tool device 10.
See also Fig. 6, utilize four lines to connect the computing of test resistance in order to explanation the present invention, wherein, this decides current and power supply 62 provides an electric current I
0, this voltage source 61 (as voltmeter) records a magnitude of voltage V relatively
0, as shown in the figure:
Because, I
0=I
1+ I
2(resistance infinity/Resistance=∞)
Therefore, I
2=0 I
0=I
1
Be calculated as follows and utilize four lines to connect the test resistance principle:
V
0＝(r3+r4)×I
2+I
1×R
0
V
0/I
0＝R
0
So can record this and connect the some resistance value of 51,52 circuits, and judged this circuit normally whether.
The characteristic of maximum of the present invention is by aforementioned structure, make it meet the application that four lines connect the test resistance principle, carry out precision, test accurately and be able to the low resistance to existing accurate printed circuit board (PCB), little resistance circuit, and thoroughly solve, improve existing measurement jig technology its difficulty that faces and defective, can actively avoid simultaneously the erroneous judgement of printed circuit board (PCB) unacceptable product, eliminate the loss that is brought that plugs of its follow-up mistake row electronic package of printed circuit board (PCB) unacceptable product.
Only the content of above-mentioned explanation only is preferred embodiment explanation of the present invention, and all variations of extending according to technological means of the present invention all should fall into patent claim of the present invention, explanation hereby.
Claims (15)
1. fixture for testing precise printed circuit board is characterized in that it includes:
One detector tube, this detector tube has a medium altitude chamber, is provided with one second elastic component in this medium altitude chamber, and this detector tube is electrically connected with one second detection line;
One second detection piece is located in this medium altitude chamber of this detector tube, and this second detection piece is provided with one second room and opening, and this second detection piece is subjected to replacing of this second elastic component;
One first detection piece includes an inner sleeve, first elastic component and probe, and this inner sleeve supports and is located in this second room, and cover system is provided with one first room in this, and this first elastic component is located in this first room; This probe is located in this first room and is subjected to replacing of this first elastic component, and this first detection piece is electrically connected with one first detection line.
2. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, this first elastic component and this second elastic component are respectively a spring.
3. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, this second detection piece is a sleeve.
4. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, forms insulation between this inner sleeve and this second detection piece.
5. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, the periphery of this inner sleeve is insulation.
6. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, this first detection line links a voltmeter.
7. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that, this second detection line links certain current and power supply.
8. a fixture for testing precise printed circuit board is characterized in that, this measurement jig includes:
Two tool devices, this tool device includes a detector tube respectively, and this detector tube is electrically connected with one second detection line; One first detection piece is located in this detector tube, and this first detection piece is electrically connected with one first detection line;
One voltmeter connects this 2 first detection line respectively;
Certain current and power supply connects this 2 second detection line respectively;
One printed circuit board (PCB) includes two at least and connects a little, and this two connects a little and connect mutually with this two tools device respectively.
9. fixture for testing precise printed circuit board as claimed in claim 1 is characterized in that this detector tube has a medium altitude chamber, is provided with one second elastic component in this medium altitude chamber.
10. fixture for testing precise printed circuit board as claimed in claim 9, it is characterized in that, this tool device further includes one second detection piece, this second detection piece is located in this medium altitude chamber of this detector tube, this second detection piece is provided with one second room and opening, and this second detection piece is subjected to replacing of this second elastic component.
11. fixture for testing precise printed circuit board as claimed in claim 10, it is characterized in that, this first detection piece includes an inner sleeve, first elastic component and probe, this inner sleeve supports and is located in this second room, this inner sleeve is provided with one first room, this first elastic component is located in this first room, and this probe is located in this first room and is subjected to replacing of this first elastic component.
12. fixture for testing precise printed circuit board as claimed in claim 11 is characterized in that, this first elastic component and this second elastic component are respectively a spring.
13. fixture for testing precise printed circuit board as claimed in claim 10 is characterized in that, this second detection piece is a sleeve.
14. fixture for testing precise printed circuit board as claimed in claim 11 is characterized in that, forms insulation between this inner sleeve and this second detection piece.
15. fixture for testing precise printed circuit board as claimed in claim 11 is characterized in that, the periphery of this inner sleeve is insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101313366A CN101644733B (en) | 2008-08-06 | 2008-08-06 | Fixture for testing precise printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101313366A CN101644733B (en) | 2008-08-06 | 2008-08-06 | Fixture for testing precise printed circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101644733A true CN101644733A (en) | 2010-02-10 |
| CN101644733B CN101644733B (en) | 2011-07-27 |
Family
ID=41656701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101313366A Expired - Fee Related CN101644733B (en) | 2008-08-06 | 2008-08-06 | Fixture for testing precise printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101644733B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967762A (en) * | 2012-11-14 | 2013-03-13 | 大连太平洋电子有限公司 | Method for testing micro-resistance library sheet resistance value of printed wiring board |
| CN103760388A (en) * | 2013-12-31 | 2014-04-30 | 昆山鼎鑫电子有限公司 | Four-wire test fixture and test method thereof |
| CN104614591A (en) * | 2015-03-04 | 2015-05-13 | 无锡韩光电器股份有限公司 | Loop resistance tester for automatic change-over switch |
| CN105372499A (en) * | 2015-11-25 | 2016-03-02 | 亿和精密工业（苏州）有限公司 | Micro-resistance measurement equipment and measurement method |
| CN109828152A (en) * | 2019-01-28 | 2019-05-31 | 东莞市硅翔绝缘材料有限公司 | The automated test device of battery heating sheet |
| CN112630539A (en) * | 2020-12-14 | 2021-04-09 | 深圳市燕麦科技股份有限公司 | Test needle die and test device for FPC performance test |
| CN113376412A (en) * | 2020-03-10 | 2021-09-10 | 中华精测科技股份有限公司 | Vertical probe head and branch probe thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3981042B2 (en) * | 2003-06-09 | 2007-09-26 | アルプス電気株式会社 | Contact probe, probe socket, electrical characteristic measuring apparatus, and contact probe pressing method |
| CN100339714C (en) * | 2004-05-20 | 2007-09-26 | 华硕电脑股份有限公司 | Test probe |
| TWI291269B (en) * | 2006-01-13 | 2007-12-11 | Murata Manufacturing Co | Coaxial connector and coaxial probe for measurement |
| CN2935167Y (en) * | 2006-07-20 | 2007-08-15 | 育鼎精密工业股份有限公司 | Contacting probe |
| CN200956035Y (en) * | 2006-08-24 | 2007-10-03 | 中国探针股份有限公司 | Replaceable probe structure |
| CN201060213Y (en) * | 2007-05-25 | 2008-05-14 | 葵谷科技实业有限公司 | Signal testing joint |
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2008
- 2008-08-06 CN CN2008101313366A patent/CN101644733B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967762A (en) * | 2012-11-14 | 2013-03-13 | 大连太平洋电子有限公司 | Method for testing micro-resistance library sheet resistance value of printed wiring board |
| CN103760388A (en) * | 2013-12-31 | 2014-04-30 | 昆山鼎鑫电子有限公司 | Four-wire test fixture and test method thereof |
| CN103760388B (en) * | 2013-12-31 | 2017-02-15 | 昆山鼎鑫电子有限公司 | Four-wire test fixture and test method thereof |
| CN104614591A (en) * | 2015-03-04 | 2015-05-13 | 无锡韩光电器股份有限公司 | Loop resistance tester for automatic change-over switch |
| CN105372499A (en) * | 2015-11-25 | 2016-03-02 | 亿和精密工业（苏州）有限公司 | Micro-resistance measurement equipment and measurement method |
| CN105372499B (en) * | 2015-11-25 | 2018-05-04 | 亿和精密工业（苏州）有限公司 | A kind of microresistivity survey equipment and measuring method |
| CN109828152A (en) * | 2019-01-28 | 2019-05-31 | 东莞市硅翔绝缘材料有限公司 | The automated test device of battery heating sheet |
| CN113376412A (en) * | 2020-03-10 | 2021-09-10 | 中华精测科技股份有限公司 | Vertical probe head and branch probe thereof |
| CN113376412B (en) * | 2020-03-10 | 2023-10-10 | 台湾中华精测科技股份有限公司 | Vertical probe head and branch type probe thereof |
| CN112630539A (en) * | 2020-12-14 | 2021-04-09 | 深圳市燕麦科技股份有限公司 | Test needle die and test device for FPC performance test |
| CN112630539B (en) * | 2020-12-14 | 2024-03-29 | 深圳市燕麦科技股份有限公司 | Test pin die and test device for FPC performance test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101644733B (en) | 2011-07-27 |
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Granted publication date: 20110727 Termination date: 20180806 |
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