CN209247976U - A kind of test fixture of printed circuit board - Google Patents
A kind of test fixture of printed circuit board Download PDFInfo
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- CN209247976U CN209247976U CN201822141873.0U CN201822141873U CN209247976U CN 209247976 U CN209247976 U CN 209247976U CN 201822141873 U CN201822141873 U CN 201822141873U CN 209247976 U CN209247976 U CN 209247976U
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Abstract
The utility model provides a kind of test fixture of printed circuit board, comprising: test interface, at least two catch elements and printing board PCB；Test interface is arranged on PCB；Test interface is connected at least one catch element；The two sides of PCB are arranged at least two catch elements, for being embedded in the stamp hole pin of printed circuit board to be tested.This programme can be improved the test development efficiency of the printed circuit board with stamp hole.
Description
Technical field
The utility model relates to electronic circuit board technical field, in particular to a kind of test fixture of printed circuit board.
Background technique
In every electronic product, printed circuit board is the significant components in electronic product.It is produced in printed circuit board
Department after new printed circuit board is produced, needs to carry out a series of test to it, to determine whether pcb board reaches
Criterion of acceptability, and as electronic technology develops rapidly, the usage amount and output of electronic product are all constantly being bettered a record, this
When, it is necessary to more efficient production test tool.
Currently, the printed circuit board in product more and more uses stamp hole as product is ultra-thin and Miniaturization Design
Design scheme forms the printed circuit board with stamp hole of small volume.
But the printed circuit board with stamp hole is in test development, it mainly will be with stamp hole by way of bonding wire
Function foot on printed circuit board is external, so as to cause the low efficiency of the printed circuit board test development with stamp hole.
Utility model content
The utility model provides a kind of test fixture of printed circuit board, can be improved the printed circuit board with stamp hole
Test development efficiency.
The utility model provides a kind of test fixture of printed circuit board, comprising: test interface, at least two clamping members
Part and printing board PCB；
The test interface setting is on the pcb；
The test interface is connected with catch element described at least one；
The two sides of the PCB are arranged at least two catch element, for being embedded in printed circuit board to be tested
Stamp hole pin in.
Preferably,
The catch element is U-shaped catch element；
On the pcb, the other end is hanging for one end welding of the U-shaped catch element；
The U-shaped card connects the hanging side of element end, is embedded in the stamp hole pin of printed circuit board to be tested.
Preferably,
At least two flutings are provided on the PCB, wherein the fluting is corresponded with the U-shaped catch element；
The hanging one end of the U-shaped catch element is located in the corresponding fluting.
Preferably,
The test interface, comprising: power supply interface and debugging interface；
At least two catch element, comprising: at least one first catch element and at least one second catch element；
The power supply interface is connected at least one described first catch element；
The debugging interface is connected at least one described second catch element.
Preferably,
The test fixture of the printed circuit board is provided with DC/DC circuit on the PCB；
One end of the DC/DC power supply is connected with the power supply interface, the other end and at least one described first clamping member
Part is connected.
Preferably,
The DC/DC circuit, comprising: copped wave module, first switch tube, second switch, first capacitor, the second capacitor and
Energy storage inductor；
The input pin of the copped wave module is connected with the first switch tube, the source electrode of the first switch tube with it is described
Power supply interface is connected, and the grid of the first switch tube and drain electrode are connected at least one described first catch element；
One end of the first capacitor is connected with the source electrode of the first switch tube, other end ground connection；
The grounding pin of the copped wave module is grounded；
The functional pin of the copped wave module is connected with the second switch, the source electrode of the second switch with it is described
The grid of first switch tube is connected, the grid and grounded drain of the second switch；
The energy storage inductor is connected between the second switch and at least one described first catch element；
One end of second capacitor is connected with the energy storage inductor, other end ground connection.
Preferably,
The test fixture of the printed circuit board is provided with signal isolation circuit on the PCB；
One end of the signal isolation circuit is connected with the debugging interface and the power supply interface respectively, the other end and institute
At least one second catch element is stated to be connected.
Preferably,
The signal isolation circuit, comprising: third switching tube, diode, first resistor and second resistance；
The grid of the third switching tube is connected with the debugging interface, the drain electrode of the third switching tube and source electrode and institute
At least one second catch element is stated to be connected；
The cathode of the diode is connected with the grid of the third switching tube, anode and the third of the diode
The grid of switching tube is connected；
One end of the first resistor is connected with the power supply interface, the grid phase of the other end and the third switching tube
Even；
One end of the second resistance is connected with the third switching tube, and the other end is connected with the anode of the diode.
Preferably,
The catch element is silvery catch element or copper catch element.
Preferably,
Tin coating or gold plating are provided in the catch element.
In the utility model embodiment, the test interface being arranged on PCB is connected at least one catch element, can be with
Realize that external testing terminal is connected by test interface at least one spring catch element；Printed circuit board to be tested is outside
Power presses pressure, can be embedded in the catch element that the two sides PCB are arranged in, so that each catch element is embedded in print to be tested
In the stamp hole pin of circuit board processed, the purpose of fixed printed circuit board to be tested is realized at the same time it can also realize clamping member
Part is connected with printed circuit board to be tested, convenient for testing printed circuit board to be tested, without the side by bonding wire
Formula is external by the function foot on the printed circuit board with stamp hole, opens so as to improve the printed circuit board test with stamp hole
The efficiency of hair.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the test fixture for printed circuit board that the utility model one embodiment provides；
Fig. 2 is the structural representation of the test fixture for another printed circuit board that the utility model one embodiment provides
Figure；
Fig. 3 is a kind of schematic diagram for DC/DC circuit that the utility model one embodiment provides；
Fig. 4 is a kind of schematic diagram for signal isolation circuit that the utility model one embodiment provides.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, described embodiment is only the utility model a part of the embodiment, rather than is all implemented
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, one embodiment of the utility model provides a kind of test fixture of printed circuit board, comprising:
Test interface 10, at least two catch elements 11 and printing board PCB 13；
The test interface 10 is arranged on the PCB13；
The test interface 10 is connected with catch element 11 described at least one；
The two sides of the PCB13 are arranged at least two catch element 11, for being embedded in printing electricity to be tested
In the stamp hole pin of road plate.
In the utility model embodiment, the test interface being arranged on PCB is connected at least one catch element, can be with
Realize that external testing terminal is connected by test interface at least one spring catch element；Printed circuit board to be tested is outside
Power presses pressure, can be embedded in the catch element that the two sides PCB are arranged in, so that each catch element is embedded in print to be tested
In the stamp hole pin of circuit board processed, the purpose of fixed printed circuit board to be tested is realized at the same time it can also realize clamping member
Part is connected with printed circuit board to be tested, convenient for testing printed circuit board to be tested, without the side by bonding wire
Formula is external by the function foot on the printed circuit board with stamp hole, opens so as to improve the printed circuit board test with stamp hole
The efficiency of hair.
Catch element can be silvery catch element or copper catch element；
When catch element is silvery catch element, tin coating or gold plating can be set in silvery catch element；
When catch element is copper catch element, tin coating or gold plating can be set in copper catch element.
It is understood that there is at least one catch element in every side of PCB.
In an embodiment of the utility model, the catch element is U-shaped catch element；
On the pcb, the other end is hanging for one end welding of the U-shaped catch element；
The U-shaped card connects the hanging side of element end, is embedded in the stamp hole pin of printed circuit board to be tested.
In the utility model embodiment, one end of U-shaped catch element is welded on PCB, so that U-shaped catch element is able to
Fixed, the U-shaped catch element other end is hanging, and the outside of PCB is arranged in the side that U-shaped card connects element end welding, and U-shaped card connects member
The inside of PCB is arranged in the hanging side in part end, and printed circuit board to be tested in this way can make U-shaped when by external force
Deformation occurs for the hanging side in catch element end, is arranged in the U-shaped catch element of the two sides PCB convenient for insertion, U-shaped card connects member
The hanging side in part end is embedded in the stamp hole pin of printed circuit board to be tested under the action of elastic force.
In an embodiment of the utility model, at least two flutings are provided on the PCB, wherein the fluting and institute
U-shaped catch element is stated to correspond；
The hanging one end of the U-shaped catch element is located in the corresponding fluting.
In the utility model embodiment, the hanging one end of U-shaped catch element is located on PCB in corresponding fluting, can be with
Position after limiting U-shaped catch element deformation occurs, avoids that U-shaped card is caused to connect element rupture because of serious deformation, or can not inlay
In the stamp hole pin of printed circuit board to be tested.
For the ease of testing printed circuit board to be tested, in an embodiment of the utility model, the test
Interface, comprising: power supply interface and debugging interface；
At least two catch element, comprising: at least one first catch element and at least one second catch element；
The power supply interface is connected at least one described first catch element；
The debugging interface is connected at least one described second catch element.
In the utility model embodiment, power supply interface is connected at least one first catch element, so that each first
When catch element is embedded in the stamp hole pin of printed circuit board to be tested, power for printed circuit board to be tested；It adjusts
Mouth of trying is connected at least one second catch element, in order to which each second catch element is embedded in printed circuit to be tested
When in the stamp hole pin of plate, printed circuit board to be tested is tested by debugging interface in outside.
In an embodiment of the utility model, the test fixture of the printed circuit board is provided with DC/DC on the PCB
Circuit；
One end of the DC/DC power supply is connected with the power supply interface, the other end and at least one described first clamping member
Part is connected.
In the utility model embodiment, DC/DC power supply is set between power supply interface and each first catch element, it can
External power supply is converted to voltage corresponding to printed circuit board to be tested by the voltage that power supply interface inputs, avoid because
The overtension of external power supply input causes printed circuit board to be measured to damage or cause fire.
In an embodiment of the utility model, the DC/DC circuit, comprising: copped wave module, first switch tube, second open
Guan Guan, first capacitor, the second capacitor and energy storage inductor；
The input pin of the copped wave module is connected with the first switch tube, the source electrode of the first switch tube with it is described
Power supply interface is connected, and the grid of the first switch tube and drain electrode are connected at least one described first catch element；
One end of the first capacitor is connected with the source electrode of the first switch tube, other end ground connection；
The grounding pin of the copped wave module is grounded；
The functional pin of the copped wave module is connected with the second switch, the source electrode of the second switch with it is described
The grid of first switch tube is connected, the grid and grounded drain of the second switch；
The energy storage inductor is connected between the second switch and at least one described first catch element；
One end of second capacitor is connected with the energy storage inductor, other end ground connection.
In the utility model embodiment, pass through copped wave module, first switch tube, second switch, first capacitor, second
Capacitor and energy storage inductor can reduce the voltage that external power supply is inputted by power supply interface, avoid the electricity inputted by external power supply
Pressing through height causes printed circuit board to be measured to damage or cause fire.
It should be noted that copped wave module can be Buck controller.
In an embodiment of the utility model, the test fixture of the printed circuit board, be provided on the PCB signal every
From circuit；
One end of the signal isolation circuit is connected with the debugging interface and the power supply interface respectively, the other end and institute
At least one second catch element is stated to be connected.
In the utility model embodiment, electricity is isolated in setting signal between debugging interface and each second catch element
The TX/RX signal of printed circuit board to be tested can be realized being isolated on electric appliance with debugging interface and power supply interface by road,
Realizing that reduction external signal is to printing electricity to be tested while communicating between debugging interface and printed circuit board to be tested
The interference of road plate test.
In an embodiment of the utility model, the signal isolation circuit, comprising: third switching tube, diode, the first electricity
Resistance and second resistance；
The grid of the third switching tube is connected with the debugging interface, the drain electrode of the third switching tube and source electrode and institute
At least one second catch element is stated to be connected；
The cathode of the diode is connected with the grid of the third switching tube, anode and the third of the diode
The grid of switching tube is connected；
One end of the first resistor is connected with the power supply interface, the grid phase of the other end and the third switching tube
Even；
One end of the second resistance is connected with the third switching tube, and the other end is connected with the anode of the diode.
In the utility model embodiment, pass through third switching tube, diode, first resistor and second resistance, Ke Yishi
It is communicated between existing debugging interface and printed circuit board to be tested, while external signal can also be reduced to printing electricity to be tested
The interference of road plate test.
It should be noted that switching tube can be metal-oxide-semiconductor, can also be insulated gate bipolar in above-mentioned each embodiment
Transistor npn npn, specifically can flexible choice according to actual needs.
As shown in Fig. 2, the utility model embodiment provides a kind of test fixture of printed circuit board, comprising:
Test interface, at least two catch elements, PCB；
DC/DC circuit and signal isolation circuit are provided on PCB；
Test interface, comprising: power supply interface 200 and debugging interface 201；
At least two catch elements, comprising: at least one first catch element and at least one second catch element；
First catch element is U-shaped first catch element 202；
Second catch element is U-shaped second catch element 203；
One end of U-shaped first catch element 202 is welded on PCB204, and the other end is located at corresponding fluting C on PCB204
In；
One end of U-shaped second catch element 203 is welded on PCB204, and the other end is located at corresponding fluting C on PCB204
In；
The two sides of PCB204 are arranged in U-shaped first catch element 202 and U-shaped second catch element 203；
The hanging side of U-shaped first catch element 202 and U-shaped second catch element, 203 end, it is to be tested for being embedded in
Printed circuit board stamp hole pin in；
Power supply interface 200 and debugging interface 201 are arranged on PCB204；
DC/DC circuit, comprising: copped wave module 205, first switch tube Q1, second switch Q2, first capacitor C1, second
Capacitor C2 and energy storage inductor L；
The input pin of copped wave module 205 is connected with first switch tube Q1, the source electrode and power supply interface of first switch tube Q1
200 are connected, and the grid of first switch tube Q1 and drain electrode are connected with one end that at least one U-shaped first catch element 202 is welded；
One end of first capacitor C1 is connected with the source electrode of first switch tube Q1, other end ground connection；
The grounding pin of copped wave module 205 is grounded；
The functional pin of copped wave module 205 is connected with second switch Q2, the source electrode and first switch of second switch Q2
The grid of pipe Q1 is connected, the grid and grounded drain of second switch Q2；
Energy storage inductor L is connected between second switch Q2 and at least one U-shaped first catch element 102；
One end of second capacitor C2 is connected with energy storage inductor L, other end ground connection；
Signal isolation circuit, comprising: third switching tube Q3, diode D, first resistor R1 and second resistance R2；
The grid of third switching tube Q3 is connected with debugging interface 201, the drain electrode of third switching tube Q3 and source electrode and at least one
One end that a U-shaped second catch element 203 is welded is connected；
The cathode of diode D is connected with the grid of third switching tube Q3, the grid of the anode and third switching tube Q3 of diode D
Extremely it is connected；
One end of first resistor R1 is connected with power supply interface 200, and the other end is connected with the grid of third switching tube Q3；
One end of second resistance R2 is connected with third switching tube Q3, and the other end is connected with the anode of diode D.
Power supply interface 200, debugging interface 201, U-shaped first catch element 202, U-shaped second catch element are shown in Fig. 2
Copped wave module 205, first switch tube Q1, second switch Q2, first capacitor C1, the second capacitor is not shown in 203 and PCB204
C2, energy storage inductor L, third switching tube Q3, diode D, first resistor R1 and second resistance R2.
It is understood that the arrangement mode of U-shaped first catch element 202 and U-shaped second catch element 23, including but not
It is limited to arrangement mode shown in Fig. 2.
As shown in figure 3, a kind of schematic diagram of DC/DC circuit provided by the embodiment of the utility model.
As shown in figure 4, a kind of schematic diagram of signal isolation circuit provided by the embodiment of the utility model.
In conclusion each embodiment of the utility model at least has the following beneficial effects:
1, in the utility model embodiment, the test interface being arranged on PCB is connected at least one catch element, can be with
Realize that external testing terminal is connected by test interface at least one spring catch element；Printed circuit board to be tested is outside
Power presses pressure, can be embedded in the catch element that the two sides PCB are arranged in, so that each catch element is embedded in print to be tested
In the stamp hole pin of circuit board processed, the purpose of fixed printed circuit board to be tested is realized at the same time it can also realize clamping member
Part is connected with printed circuit board to be tested, convenient for testing printed circuit board to be tested, without the side by bonding wire
Formula is external by the function foot on the printed circuit board with stamp hole, opens so as to improve the printed circuit board test with stamp hole
The efficiency of hair.
2, in the utility model embodiment, one end of U-shaped catch element is welded on PCB, so that U-shaped catch element is able to
Fixed, the U-shaped catch element other end is hanging, and the outside of PCB is arranged in the side that U-shaped card connects element end welding, and U-shaped card connects member
The inside of PCB is arranged in the hanging side in part end, and printed circuit board to be tested in this way can make U-shaped when by external force
Deformation occurs for the hanging side in catch element end, is arranged in the U-shaped catch element of the two sides PCB convenient for insertion, U-shaped card connects member
The hanging side in part end is embedded in the stamp hole pin of printed circuit board to be tested under the action of elastic force.
3, in the utility model embodiment, the hanging one end of U-shaped catch element is located on PCB in corresponding fluting, can be with
Position after limiting U-shaped catch element deformation occurs, avoids that U-shaped card is caused to connect element rupture because of serious deformation, or can not inlay
In the stamp hole pin of printed circuit board to be tested.
4, in the utility model embodiment, power supply interface is connected at least one first catch element, so that each first
When catch element is embedded in the stamp hole pin of printed circuit board to be tested, power for printed circuit board to be tested；It adjusts
Mouth of trying is connected at least one second catch element, in order to which each second catch element is embedded in printed circuit to be tested
When in the stamp hole pin of plate, printed circuit board to be tested is tested by debugging interface in outside.
5, in the utility model embodiment, DC/DC power supply is set between power supply interface and each first catch element, it can
External power supply is converted to voltage corresponding to printed circuit board to be tested by the voltage that power supply interface inputs, avoid because
The overtension of external power supply input causes printed circuit board to be measured to damage or cause fire.
6, in the utility model embodiment, electricity is isolated in setting signal between debugging interface and each second catch element
The TX/RX signal of printed circuit board to be tested can be realized being isolated on electric appliance with debugging interface and power supply interface by road,
Realizing that reduction external signal is to printing electricity to be tested while communicating between debugging interface and printed circuit board to be tested
The interference of road plate test.
It should be noted that, in this document, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence " including a 〃 〃 ", it is not excluded that
There is also other identical factors in the process, method, article or apparatus that includes the element.
Each embodiment provided in the utility model can be combined with each other as needed, such as any two, three
Feature in a or more embodiment is combined with each other to constitute the new embodiment of the utility model, this is also in the utility model
Protection scope in, unless otherwise stated or technically constitute contradiction and can not implement.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to
The utility model, for those skilled in the art, the present invention may have various modifications and changes.It is all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of test fixture of printed circuit board characterized by comprising test interface, at least two catch elements and print
Circuit board PCB processed；
The test interface setting is on the pcb；
The test interface is connected with catch element described at least one；
The two sides of the PCB are arranged at least two catch element, for being embedded in the postal of printed circuit board to be tested
In the pin of ticket hole.
2. the test fixture of printed circuit board according to claim 1, which is characterized in that
The catch element is U-shaped catch element；
On the pcb, the other end is hanging for one end welding of the U-shaped catch element；
The U-shaped card connects the hanging side of element end, is embedded in the stamp hole pin of printed circuit board to be tested.
3. the test fixture of printed circuit board according to claim 2, which is characterized in that
At least two flutings are provided on the PCB, wherein the fluting is corresponded with the U-shaped catch element；
The hanging one end of the U-shaped catch element is located in the corresponding fluting.
4. the test fixture of printed circuit board according to claim 1, which is characterized in that
The test interface, comprising: power supply interface and debugging interface；
At least two catch element, comprising: at least one first catch element and at least one second catch element；
The power supply interface is connected at least one described first catch element；
The debugging interface is connected at least one described second catch element.
5. the test fixture of printed circuit board according to claim 4, which is characterized in that
DC/DC circuit is provided on the PCB；
One end of the DC/DC power supply is connected with the power supply interface, the other end and at least one described first catch element phase
Even.
6. the test fixture of printed circuit board according to claim 5, which is characterized in that
The DC/DC circuit, comprising: copped wave module, first switch tube, second switch, first capacitor, the second capacitor and energy storage
Inductance；
The input pin of the copped wave module is connected with the first switch tube, the source electrode of the first switch tube and the power supply
Interface is connected, and the grid of the first switch tube and drain electrode are connected at least one described first catch element；
One end of the first capacitor is connected with the source electrode of the first switch tube, other end ground connection；
The grounding pin of the copped wave module is grounded；
The functional pin of the copped wave module is connected with the second switch, the source electrode of the second switch and described first
The grid of switching tube is connected, the grid and grounded drain of the second switch；
The energy storage inductor is connected between the second switch and at least one described first catch element；
One end of second capacitor is connected with the energy storage inductor, other end ground connection.
7. the test fixture of printed circuit board according to claim 4, which is characterized in that
Signal isolation circuit is provided on the PCB；
One end of the signal isolation circuit is connected with the debugging interface and the power supply interface respectively, the other end and it is described extremely
Few second catch element is connected.
8. the test fixture of printed circuit board according to claim 7, which is characterized in that
The signal isolation circuit, comprising: third switching tube, diode, first resistor and second resistance；
The grid of the third switching tube is connected with the debugging interface, the drain electrode of the third switching tube and source electrode and it is described extremely
Few second catch element is connected；
The cathode of the diode is connected with the grid of the third switching tube, and anode and the third of the diode switch
The grid of pipe is connected；
One end of the first resistor is connected with the power supply interface, and the other end is connected with the grid of the third switching tube；
One end of the second resistance is connected with the third switching tube, and the other end is connected with the anode of the diode.
9. according to claim 1 to the test fixture of any printed circuit board in 8, which is characterized in that
The catch element is silvery catch element or copper catch element；
And/or
Tin coating or gold plating are provided in the catch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141873.0U CN209247976U (en) | 2018-12-19 | 2018-12-19 | A kind of test fixture of printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141873.0U CN209247976U (en) | 2018-12-19 | 2018-12-19 | A kind of test fixture of printed circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN209247976U true CN209247976U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822141873.0U Active CN209247976U (en) | 2018-12-19 | 2018-12-19 | A kind of test fixture of printed circuit board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556870A (en) * | 2021-06-29 | 2021-10-26 | 青岛海尔科技有限公司 | Circuit board, fixing method and device thereof, storage medium and electronic device |
| CN113670643A (en) * | 2021-08-30 | 2021-11-19 | 四川虹美智能科技有限公司 | Intelligent air conditioner testing method and system |
-
2018
- 2018-12-19 CN CN201822141873.0U patent/CN209247976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556870A (en) * | 2021-06-29 | 2021-10-26 | 青岛海尔科技有限公司 | Circuit board, fixing method and device thereof, storage medium and electronic device |
| CN113670643A (en) * | 2021-08-30 | 2021-11-19 | 四川虹美智能科技有限公司 | Intelligent air conditioner testing method and system |
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