CN2795864Y - Spring transfer element of printed circuit board detector - Google Patents
Spring transfer element of printed circuit board detector Download PDFInfo
- Publication number
- CN2795864Y CN2795864Y CN 200520054740 CN200520054740U CN2795864Y CN 2795864 Y CN2795864 Y CN 2795864Y CN 200520054740 CN200520054740 CN 200520054740 CN 200520054740 U CN200520054740 U CN 200520054740U CN 2795864 Y CN2795864 Y CN 2795864Y
- Authority
- CN
- China
- Prior art keywords
- compression spring
- conducting block
- circuit board
- printed circuit
- current conducting
- 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 - Fee Related
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- Measuring Leads Or Probes (AREA)
Abstract
The utility model relates to an elastic transfer element of a detector of a printed circuit board, which comprises a compression spring (1) and a testing wire (2) of which the tail is connected by a solder (3). The upper part (11) of the compression spring (1) is provided with at least two cycles of springs closely arranged, and a closed current conducting block (4) is embedded in the upper part (11) of the compression spring (1); the current conducting block (4) is welded with the upper part (11) of the compression spring into integration, and the top of the current conducting block (4) is provided with a drop pit (41). The transfer element can prevent the probe from foundering or blocking and can be manufactured into the very thin transfer element so as to meet the requirements for testing the small precise printed circuit board. Additionally, the current conducting block (4) can be made of hot melt current conducting materials, and the needed drop pit (41) can be naturally formed by the tensile function of the materials during a solidifying process so as to omit the manufacturing procedure of processing the drop pit on a top block in the prior art.
Description
Technical field the utility model relates to the electric performance test device, and particularly the switching spring that joins with test probe in the copper circuit board lead on-off system combined tester is applied in test.
Background technology general circuit plate must can learn that circuit has or not open circuit or short circuit through test before welding electronic part, the method of testing of the combined tester that is adopted between industry is to test with circuit board tester at present, draw the array line from circuit board tester, every line is all received a spring and a probe on measurement jig.Measurement jig is the device that tested point is equipped with probe and spring one to one on and the wiring board, the tested point on the probe contact wiring board, and signal is just received by probe and spring and connecting line and is carried out test analysis in the test machine like this.In order to guarantee that the good and spring of contacting of probe and spring keeps normal motion state in pressurized process, the spring of available technology adopting generally is that to make the top be the backing portion that holding in the palm of one coiling and molding caught the Plug Division.There is following shortcoming in this way in the use of reality:
1. along with print circuit plates making miniature precisionization more and more, just require test probe to want thin, spacing between the probe is little, and existing way middle probe can not be accomplished very thin, because will inevitably form a center pit in the middle of the backing portion that existing way medi-spring top is wound into, can make like this diameter less than or subside in use or stuck in the center pit of spring near the probe of this center bore.
2. owing to the existence of this backing portion, the external diameter of spring can not be accomplished very thin, thereby has limited the power of test of tool, just can't test this spring of the very high use in printed circuit board of some density.
Summary of the invention the utility model adopts the conducting block that the hot melt conductive material is made to be embedded in the spring, solves the prior art middle probe and subsides or stuck technical matters in the center pit of spring, and the external diameter of spring can be accomplished very thin again simultaneously.
The technical solution of the utility model is as follows: the elasticity switching element of this printed circuit board test fixture, comprise compression spring, and the afterbody of described compression spring connects test wires by scolder 3; At least two coil springs of described compression spring upper end are tight arrangement, and described compression spring upper end is embedded with the conducting block of sealing, and this conducting block and compression spring upper end melting welding are integral, and the top of conducting block is provided with pit.The conducting block of this sealing can prevent that probe from subsideing or be stuck, and the spring of this embedded conducting block formula can be accomplished very carefully simultaneously, satisfies the needs of test miniature precision printed circuit board (PCB).In addition, this conducting block can adopt the hot melt conductive material to make, utilize the effect of this material its tension force in the process of solidifying, the position that formation contacts with spring is than higher, the shape that the middle part is recessed, required pit can be formed naturally, the manufacturing procedure of processing pit on the jacking block in the prior art can be omitted.
The utility model adopts technique scheme, makes this switching spring that probe is produced and subsides or stuck phenomenon, and contact is good, and the assembling procedure of spring and conducting block is very simple, and cost is also lower.
Description of drawings
Fig. 1 is that the master of elasticity switching element described in the utility model looks cross-sectional schematic.
Embodiment is in conjunction with top description of drawings specific implementation of the present utility model.
By finding out among Fig. 1, the elasticity switching element of this printed circuit board test fixture comprises compression spring 1, and the afterbody of described compression spring 1 connects test wires 2 by scolder 3; At least two coil springs of described compression spring 1 upper end 11 are tight arrangement, and described compression spring 1 upper end 11 is embedded with the conducting block 4 of sealing, and this conducting block 4 is integral with compression spring 1 upper end, 11 melting welding, and the top of conducting block 4 is provided with pit 41.The conducting block of this sealing can prevent that probe from subsideing or be stuck, and the spring of this embedded conducting block formula can be accomplished very carefully simultaneously, satisfies the needs of test miniature precision printed circuit board (PCB).In addition, this conducting block can adopt the hot melt conductive material to make, utilize the effect of this material its tension force in the process of solidifying, the position that formation contacts with spring is than higher, the shape that the middle part is recessed, required pit can be formed naturally, the manufacturing procedure of processing pit on the jacking block in the prior art can be omitted.In the process of assembling, earlier (for example: materials such as scolding tin) be contained in the upper end 11 of compression spring 1 with an amount of hot melt conductive material, heat the upper end 11 of this compression spring 1 in the periphery, this hot melt conductive material is dissolved, cool off then, at this moment, the hot melt conductive material begins to solidify, with compression spring 1 upper end 11 affixed being integral, forming the conducting block 4 of sealing, and form pit 41 at the top of this conducting block 4.
Claims (1)
1. the elasticity switching element of a printed circuit board test fixture comprises compression spring (1), and the afterbody of described compression spring (1) connects test wires (2) by scolder (3); It is characterized in that: at least two coil springs of described compression spring (1) upper end (11) are tight arrangement, described compression spring (1) upper end (11) is embedded with the conducting block (4) of sealing, this conducting block (4) is integral with compression spring (1) upper end (11) melting welding, and the top of conducting block (4) has pit (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054740 CN2795864Y (en) | 2005-02-03 | 2005-02-03 | Spring transfer element of printed circuit board detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054740 CN2795864Y (en) | 2005-02-03 | 2005-02-03 | Spring transfer element of printed circuit board detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795864Y true CN2795864Y (en) | 2006-07-12 |
Family
ID=36813619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520054740 Expired - Fee Related CN2795864Y (en) | 2005-02-03 | 2005-02-03 | Spring transfer element of printed circuit board detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795864Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102985833A (en) * | 2010-06-01 | 2013-03-20 | Nts有限公司 | Probe for inspecting electronic component |
| CN112129975A (en) * | 2019-06-25 | 2020-12-25 | 中国探针股份有限公司 | Electrical connection assembly |
-
2005
- 2005-02-03 CN CN 200520054740 patent/CN2795864Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102985833A (en) * | 2010-06-01 | 2013-03-20 | Nts有限公司 | Probe for inspecting electronic component |
| US8975906B2 (en) | 2010-06-01 | 2015-03-10 | Nts Co., Ltd. | Probe for inspecting electronic component |
| CN102985833B (en) * | 2010-06-01 | 2015-12-09 | Nts有限公司 | Electronic devices and components detector probe |
| CN112129975A (en) * | 2019-06-25 | 2020-12-25 | 中国探针股份有限公司 | Electrical connection assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060712 |