CN105115671A - Test tool for waterproof performance of PCB (printed circuit board) assembly - Google Patents
Test tool for waterproof performance of PCB (printed circuit board) assembly Download PDFInfo
- Publication number
- CN105115671A CN105115671A CN201510628779.6A CN201510628779A CN105115671A CN 105115671 A CN105115671 A CN 105115671A CN 201510628779 A CN201510628779 A CN 201510628779A CN 105115671 A CN105115671 A CN 105115671A
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- pcb
- pcb assembly
- trough
- motor
- magnet
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Abstract
The invention relates to a test tool for waterproof performance of a PCB (printed circuit board) assembly, which is used for detecting the waterproof performance of the PCB assembly. The PCB assembly comprises a Hall element, a PCB and a trough body, which are fixedly connected with one another, wherein the outer surface of the trough body is sealed by virtue of waterproof coating, the trough body comprises a water storage trough and a water overflow trough, which are separated from each other, a test trough is arranged below a limit water level of the water storage trough, the PCB assembly is detachably arranged in the test trough in an insert manner, a limiting plate is fixed on the trough body above the PCB assembly, a magnet is installed above the Hall element, the magnet is fixed on a motor, the motor is connected with a control box by virtue of a circuit and powered and driven by the control box, and the PCB is connected with a pluggable circuit of the control box. The test tool has the beneficial effects that a harness assembly connector is connected with a 5-pin connector on the control box, the PCB assembly is inserted into the test trough, and the PCB assembly is always immersed in the water; whether the water resistance of the PCB assembly is qualified or not is judged by virtue of a reading of a speed display screen of the control box; the tool is simple in structure and convenient to operate, the test efficiency is greatly increased, the working hour and the cost are reduced, and the labor intensity of the test personnel is alleviated.
Description
Technical field
The present invention relates to a kind of PCB assembly water resistance test fixture.
Background technology
My company has a gear case product to detect the rotating speed of motor by Hall element, client often feeds back this gear case under the environment of dust and humidity, there is the situation testing the speed and lost efficacy, the water resistance being PCB assembly is by analysis bad, cause Hall element to lose efficacy, customer requirement carries out the process of waterproof gluing and 100% on-line checkingi to PCB.In test in the early stage, our method of testing is: be immersed in the water by the PCB assembly after gluing, take out and insert the PCB pickup groove on gear case, wiring harness connector is connected with 5 adapters on control enclosure, and power supply and motor +/-are extremely connected starter motor, drip to the gluing place of PCB assembly, if motor speed is 6000 ± 600rpm on control enclosure, then be judged to be that waterproof is qualified, 0rpm is defective, and other reading is frock fault.The loaded down with trivial details poor efficiency of this test process, cost is high.
Summary of the invention
The technical problem to be solved in the present invention is: based on the problems referred to above, the invention provides a kind of PCB assembly water resistance test fixture.
The present invention solves the technical scheme that its technical matters adopts: a kind of PCB assembly water resistance test fixture, for detecting the water resistance of PCB assembly, PCB assembly comprises the Hall element be fixedly connected with, PCB and do waterproof gluing encapsulation process at its outside surface, comprise point cell body being separated with aqua storage tank and overflow groove, be convenient to the cell body that water body is full of under the limiting water level of aqua storage tank and be provided with test trough, test trough is connected with aqua storage tank, detachablely in test trough be inserted with PCB assembly, above PCB assembly, cell body is fixed with the limiting plate being convenient to locate, above Hall element, magnet is installed, magnet is fixed on motor, motor circuit is connected with control enclosure and supplies electric drive by control enclosure, PCB and control enclosure insertable type connection, Hall element detects magnetic field of magnets and change thereof and passes to control enclosure with pulse voltage form by PCB.
Further, the distance controlled between Hall element and magnet is 2 ~ 3.5mm, prevents Hall element from interfering with the magnet holder operated continuously and magnet assemblies.
Further, PCB assembly is connected with harness connector plug, and harness connector plug is connected with 5 adapters of control enclosure, is convenient to Hall element and changes of magnetic field is fed back to control enclosure with the form of pulse voltage.
Further, control enclosure obtains the rotating speed of motor by the number calculating pulse, and is presented on rotating speed display screen.
Further, motor is fixed on motor fixing frame, and motor shaft is pressed with the magnet holder of fixed magnet, limiting plate is installed on cell body.
The invention has the beneficial effects as follows: in test process, magnet keeps rotating under the driving of motor, and wire harness assembly joint is connected with 5 adapters on control enclosure, and PCB assembly inserts in test trough, and PCB assembly is immersed in water all the time; Judge that whether the waterproof of PCB assembly is qualified by the reading of the speed display screen of control enclosure; This tool structure is simple, easy to operate, testing efficiency is improved greatly, reduces the labour intensity of time cost and test man.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of control enclosure;
Fig. 3 is the structural representation of PCB assembly.
Wherein: 1. Hall element, 2.PCB, 3. aqua storage tank, 4. overflow groove, 5. cell body, 6. test trough, 7. limiting plate, 8. magnet, 9. motor, 10. control enclosure, 11. harness connector plug, 12.5 adapters, 13. motor fixing frames, 14. magnet holder.
Embodiment
The invention will be further described in conjunction with specific embodiments now, and following examples are intended to the present invention instead of limitation of the invention further are described.
A kind of PCB assembly water resistance test fixture as shown in Figures 1 to 3, for detecting the water resistance of PCB assembly, PCB assembly comprises the Hall element 1 be fixedly connected with, PCB2 and do waterproof gluing encapsulation process at its outside surface, comprise point cell body being separated with aqua storage tank 3 and overflow groove 45, be convenient to the cell body 5 that water body is full of under the limiting water level of aqua storage tank 3 and be provided with test trough 6, detachablely in test trough 6 be inserted with PCB assembly, above PCB assembly, cell body 5 is fixed with the limiting plate 7 being convenient to locate, magnet 8 is installed above Hall element 1, magnet 8 is fixed on motor 9, motor 9 connection has control enclosure 10 and supplies electric drive by control enclosure 10, PCB2 and control enclosure 10 insertable type connection, Hall element 1 detects magnet 8 magnetic field and change thereof and passes to control enclosure 10 with pulse voltage form by PCB.
Distance between Hall element 1 and magnet 8 is 2 ~ 3.5mm.
PCB assembly is connected with harness connector plug 11, and harness connector plug 11 is connected with 5 adapters 12 of control enclosure.
Control enclosure 10 obtains the rotating speed of motor 9 by the number calculating pulse.
Motor 9 is fixed on motor fixing frame 13, and motor shaft is pressed with the magnet holder 14 of fixed magnet 8, limiting plate 7 is installed on cell body 5.
Frock is assembled: motor is arranged on motor fixing frame, is then fitted on motor shaft by magnet holder and magnet assemblies, is fixed on cell body with screw by motor and bracket component; With screw limiting plate is fixed on and cell body forms test trough and prevents the Hall element on PCB from interfering with the magnet holder operated continuously and magnet assemblies; Electric Machine Control line on control enclosure connects the motor +/-pole in test fixture main body.
Prepare before test: add water in aqua storage tank limiting water level; Press switch activated motor.
Test process: the harness connector plug connected by PCB inserts 5 adapters on control enclosure, then inserts in test trough by PCB; When rotating under the driving of magnet at motor, Hall element detects magnetic field of magnets and change thereof and feeds back to control enclosure with the form of pulse voltage, and control enclosure is obtained the rotating speed of motor by the number calculating pulse and is presented on rotating speed display screen; Operator reads and records the reading on rotating speed display screen, and it is qualified to judge during 6000 ± 600rpm, and 0rpm is defective, and other reading is frock fault.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (5)
1. a PCB assembly water resistance test fixture, for detecting the water resistance of PCB assembly, PCB assembly comprises the Hall element (1) be fixedly connected with, PCB (2) and do waterproof gluing encapsulation process at its outside surface, it is characterized in that: comprise point cell body (5) being separated with aqua storage tank (3) and overflow groove (4), be convenient to the cell body (5) that water body is full of under the limiting water level of aqua storage tank (3) and be provided with test trough (6), test trough (6) is connected with aqua storage tank (3), detachablely in test trough (6) be inserted with PCB assembly, above PCB assembly, cell body (5) is fixed with the limiting plate (7) being convenient to locate, Hall element (1) top is provided with magnet (8), magnet (8) is fixed on motor (9), motor (9) connection has control enclosure (10) and supplies electric drive by control enclosure (10), PCB (2) and control enclosure (10) insertable type connection, Hall element (1) detects magnet (8) magnetic field and change thereof and passes to control enclosure (10) with pulse voltage form by PCB.
2. PCB assembly water resistance test fixture according to claim 1, is characterized in that: the distance between described Hall element (1) and magnet (8) is 2 ~ 3.5mm.
3. PCB assembly water resistance test fixture according to claim 1, is characterized in that: described PCB assembly is connected with harness connector plug (11), and harness connector plug (11) is connected with 5 adapters (12) of control enclosure.
4. PCB assembly water resistance test fixture according to claim 1, is characterized in that: described control enclosure (10) obtains the rotating speed of motor (9) by the number calculating pulse.
5. PCB assembly water resistance test fixture according to claim 1, it is characterized in that: described motor (9) is fixed on motor fixing frame (13), motor shaft is pressed with the magnet holder (14) of fixed magnet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628779.6A CN105115671A (en) | 2015-10-28 | 2015-10-28 | Test tool for waterproof performance of PCB (printed circuit board) assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628779.6A CN105115671A (en) | 2015-10-28 | 2015-10-28 | Test tool for waterproof performance of PCB (printed circuit board) assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105115671A true CN105115671A (en) | 2015-12-02 |
Family
ID=54663712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510628779.6A Withdrawn CN105115671A (en) | 2015-10-28 | 2015-10-28 | Test tool for waterproof performance of PCB (printed circuit board) assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105115671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595970A (en) * | 2016-11-09 | 2017-04-26 | 浙江陆虎汽车有限公司 | Air tightness test device |
-
2015
- 2015-10-28 CN CN201510628779.6A patent/CN105115671A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595970A (en) * | 2016-11-09 | 2017-04-26 | 浙江陆虎汽车有限公司 | Air tightness test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20151202 |