CN202216977U - Four-wire jig - Google Patents
Four-wire jig Download PDFInfo
- Publication number
- CN202216977U CN202216977U CN2011202992003U CN201120299200U CN202216977U CN 202216977 U CN202216977 U CN 202216977U CN 2011202992003 U CN2011202992003 U CN 2011202992003U CN 201120299200 U CN201120299200 U CN 201120299200U CN 202216977 U CN202216977 U CN 202216977U
- Authority
- CN
- China
- Prior art keywords
- dials
- drum
- base plate
- many
- insulation course
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 claims abstract description 67
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229920002334 Spandex Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000004759 spandex Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000012353 t test Methods 0.000 description 1
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The utility model provides a four-wire jig, it includes that the interval sets up and through fixed dial insulation layer of coupling mechanism and dial bottom plate, set up many test needles that alternate on this dial insulation layer, dial bottom plate that drum and interval below the dial bottom plate set up, still include many conductor wires and a test interface, a serial communication port, the one end of many conductor wires is connected test interface, the other end pierces through the drum exposes a plurality of conductive contact, and the one end that stretches out in the dial bottom plate of these many test needles and these a plurality of conductive contact with separable mode one-to-one, the drum with the dial bottom plate passes through the bolt fastening. The utility model discloses four-wire tool has simple structure, can solve the test demand of high density, low resistance, slight open circuit, slight short circuit, moreover, has the compatibility, but the wide application is in various printed circuit board's testing process.
Description
Technical field
The utility model relates to a kind of tool, especially a kind of four line tools that printed board circuit is tested of being used for.
Background technology
Electronic component on the printed circuit board (PCB) should be with suitable circuit serial or parallel connection, to reach a certain specific effect.As be short-circuited or open circuit, circuit board can't use.Therefore, must be before circuit board dispatches from the factory through test, complicated circuit and number of electronic components on the circuit board are too many, in the test process of electronic component, need rely on measurement jig again, cooperate Test Host to accomplish the test job of electronic component.
Existing measurement jig is a testing needle press formula tool, and it is made up of dials, drum, testing needle, spring line, test interface; Dials is made up of one or more insulcrete, has the hole corresponding with printed board to be measured on the dials, places testing needle in the hole; Drum is made up of one or more insulcrete, has on the drum and the corresponding hole of last piece plate of dials, places the spring line in the hole, and an end of spring line is connected with test interface, and test interface is connected with test machine; Dials and drum are grouped together, and one section contact measured plate of testing needle other end passes through the spring line, spring line test interface, and test interface is accomplished test through test machine.
Along with the printed circuit board test point is more and more closeer, solder joint is more and more littler, and existing tool has certain diameter owing to each testing needle corresponding spring line, so, can't satisfy the demand that high-density printed circuit board is tested.
The utility model content
In order to solve the problem of mentioning in the background technology, the utility model provides a kind of four line tools of high-density test of the novel printed circuit board (PCB) realized.
The purpose of the utility model realizes through following technical scheme:
A kind of four line tools; It comprises be provided with at interval and through bindiny mechanism fixing dials insulation course and dials base plate, be arranged at the drum of dials floor below and be provided with at interval be interspersed in many testing needles on this dials insulation course, the dials base plate; Also comprise many conductor wires and a test interface; It is characterized in that an end of said many conductor wires connects said test interface, the other end penetrates said drum and exposes a plurality of conductive junction points; An end that stretches out in the dials base plate of these many testing needles contacts so that separable mode is corresponding one by one with these a plurality of conductive junction points, and said drum and said dials base plate pass through bolt.
As the utility model optimized technical scheme, said conductor wire is an enameled wire, and said conductive junction point is exposed, and the conductive junction point surface is coated with gold layer or nickel dam.
As the utility model optimized technical scheme, said many testing needles exposed and not the surface of the part of corresponding contact with conductive junction point all scribble insulation course.
As the utility model optimized technical scheme, said conductor wire inserts the part of drum and fixes through the conductor wire jack in glue and the drum.
As the utility model optimized technical scheme, said dials plate upper surface is provided with a sponge, Lycra or layer of cloth.
As the utility model optimized technical scheme, said dials insulation course comprises the dials face and dials second insulcrete of range upon range of setting.
As the utility model optimized technical scheme, be provided with a guide layer between said dials insulation course and the dials base plate, between this guide layer and this dials insulation course and this dials base plate spacing is arranged all, said many testing needles also penetrate this guide layer.
As the utility model optimized technical scheme, said testing needle is the elastic metallic pin.
Compared with prior art, the utility model possesses following advantage:
1, utilizes resilient testing needle to replace the spring of former drum, reduced cost, increased the space of testing needle greatly, can test the zone that originally can't test or can not test fully, improved the reliability of board under test;
2, testing needle and conductor wire directly contact and have reduced the effect that contact resistance reaches the low-resistance test;
3, the stability and the efficient of testing needle and the direct engaged test of conductor wire improve greatly;
4, through change test interface can with the supporting use of various test machines;
To sum up, that the utility model four line tools have is simple in structure, can solve high density, the testing requirement of low resistance, slight open circuit, slight short circuit, and, having compatibility, can be widely used in the testing process of various printed circuit board (PCB)s.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:
Fig. 1 is the one-piece construction cut-open view of the utility model embodiment one;
Fig. 2 is the one-piece construction cut-open view of the utility model embodiment two.
Embodiment
Embodiment one:
As shown in Figure 1; This embodiment comprises sequence interval setting from top to bottom and connects fixing dials insulation course, guide layer 3 and dials base plate 5 through joint pin 9, also comprises many testing needles 7 that intert this dials insulation course, guide layer 3, dials base plate 5 successively that are arranged at the drum 6 of dials base plate 5 belows and are provided with at interval.Said dials insulation course comprises the dials face 1 and dials second insulcrete 2 of range upon range of setting; The upper surface of said dials base plate 5 is provided with a spongy layer 4, and this embodiment comprises that also an end that is provided with at interval penetrates said drum 6 and exposes many conductor wires 11 that a plurality of conductive junction point 111, the other end are connected in special machine test interface 12.These many testing needles 7 contact so that separable mode is corresponding one by one with these a plurality of conductive junction points 91.Fixing between dials base plate 5 and the drum 6 through bolt 10.
This conductor wire 11 is an enameled wire, and said conductive junction point 111 exposes, and its surface is coated with gold layer or nickel dam.
This testing needle 7 is the elastic metallic pin, and it is exposed and do not scribble insulation course with the needle body part surface of conductive junction point 111 corresponding contacts, causes short circuit to prevent that testing needle 7 from colliding when the bending each other.
The part of the insertion drum 6 of this conductor wire 11 is fixed through the conductor wire jack edge in glue and the drum 6.
Said spongy layer 4 also can be substituted by the Lycra layer.
When using this four lines tool; Printed circuit board (PCB) to be tested 8 is positioned over the corresponding position, top of dials insulation course, and test machine to pressing down, makes the upper end of testing needle 7 contact with the tested part of printed circuit board (PCB) 8 printed circuit board (PCB); Corresponding two testing needles 7 of each electric contact of printed circuit board (PCB); The conductive junction point 111 corresponding contacts that expose on the lower end of testing needle 7 and the drum 6, and elasticity of compression testing needle 7 makes it slight curving to guarantee that testing needle 7 contacts with conductive junction point 111 well, at this moment; The conductor wire 11 of drum 6 lower ends is connected through special machine test interface 12 and testing tool, can test printed circuit board (PCB) 8.
Embodiment two:
As shown in Figure 2, the structure proximate of embodiment two and embodiment one, difference only is: said guide layer 3 is not set; Many conductor wire 11 is connected with universal machine test interface 13.
Claims (8)
1. line tool; It comprises be provided with at interval and through bindiny mechanism fixing dials insulation course and dials base plate, be arranged at the drum of dials floor below and be provided with at interval be interspersed in many testing needles on this dials insulation course, the dials base plate; Also comprise many conductor wires and a test interface; It is characterized in that an end of said many conductor wires connects said test interface, the other end penetrates said drum and exposes a plurality of conductive junction points; An end that stretches out in the dials base plate of these many testing needles contacts so that separable mode is corresponding one by one with these a plurality of conductive junction points, and said drum and said dials base plate pass through bolt.
2. four line tools according to claim 1 is characterized in that said conductor wire is an enameled wire, and said conductive junction point is exposed, and its surface is coated with gold layer or nickel dam.
3. four line tools according to claim 1 is characterized in that, said many testing needles exposed and not the surface of the part of corresponding contact with conductive junction point all scribble insulation course.
4. four line tools according to claim 1 is characterized in that, said conductor wire inserts the part of insulated chassis and fixes through the conductor wire jack in glue and the insulated chassis.
5. four line tools according to claim 1 is characterized in that said dials plate upper surface is provided with a sponge, Lycra or layer of cloth.
6. four line tools according to claim 1 is characterized in that said testing needle is the elastic metallic pin.
7. four line tools according to claim 1 is characterized in that, said dials insulation course comprises the dials face and dials second insulcrete of range upon range of setting.
8. four line tools according to claim 1 is characterized in that, are provided with a guide layer between said dials insulation course and the dials base plate, between this guide layer and this dials insulation course and this dials base plate spacing are arranged all, and said many testing needles also penetrate this guide layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202992003U CN202216977U (en) | 2011-08-17 | 2011-08-17 | Four-wire jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202992003U CN202216977U (en) | 2011-08-17 | 2011-08-17 | Four-wire jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202216977U true CN202216977U (en) | 2012-05-09 |
Family
ID=46016225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202992003U Expired - Lifetime CN202216977U (en) | 2011-08-17 | 2011-08-17 | Four-wire jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202216977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113391189A (en) * | 2021-05-21 | 2021-09-14 | 深圳莱宝高科技股份有限公司 | Circuit for locating fault location of high density circuit and fault testing method |
-
2011
- 2011-08-17 CN CN2011202992003U patent/CN202216977U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113391189A (en) * | 2021-05-21 | 2021-09-14 | 深圳莱宝高科技股份有限公司 | Circuit for locating fault location of high density circuit and fault testing method |
| CN113391189B (en) * | 2021-05-21 | 2023-03-31 | 深圳莱宝高科技股份有限公司 | Circuit for locating fault location of high density circuit and fault testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |