A pbc a test fixture

Abstract

The application discloses a PBCA test fixture and belongs to the technical field of automatic detection equipment. The fixture comprises a fixture box body, a test panel, a rear cover plate, a multi-path voltage / current test module, a trigger test module, a communication interface module, a cooling fan, a probe test assembly, a potentiometer adjusting mechanism and a positioning and pressing mechanism. The front panel of the fixture is provided with a boat-shaped switch, a DC fuse holder, multiple sets of voltmeters and ammeters. The rear cover plate is provided with an AC power socket, a DB9 interface and a network port seat. The cover plate is provided with a button hole, an LED lamp hole and a wire hole. The inside is precisely contacted with spring probes and PCBA test points, so that 24V / 12V / 5V / 3.3V / 1V multi-path voltage, standby current, light source output current, trigger signal, OCP protection, fan start, power failure memory, NTC temperature, full load and capacitor discharge integrated automatic detection are realized. The application has high integration, comprehensive testing, accurate positioning and convenient operation, and can complete the full-function detection of the light source module PCBA at one time, thereby effectively improving the production test efficiency and product yield.

Description

Technical Field

[0001] This invention relates to the field of PCBA functional testing equipment technology, and in particular to a test fixture specifically designed for light source module PBCA. Background Technology

[0002] Light source module (such as LED driver, light source controller) PCBAs require multiple tests during production, including voltage, current, communication, triggering, fan, protection functions, button display, temperature, full load, and power-down memory. Traditional testing methods have the following drawbacks: First, the testing functions are scattered, requiring multiple instruments for step-by-step testing, resulting in extremely low efficiency; second, there are no dedicated fixtures, leading to complex wiring, easy short circuits, and easy damage to the PCBA; third, positioning is inaccurate, manual clamping is unstable, and test data fluctuates greatly; fourth, it is impossible to observe multiple voltage and current channels simultaneously, making judgment difficult and prone to mismeasurement; fifth, there is no standardized calibration mechanism, making initial calibration of current and voltage inconvenient; sixth, there is no complete protection structure, lacking discharge, heat dissipation, and overcurrent protection, resulting in poor safety; seventh, the interfaces are not standardized, with no standardized layout for network ports, serial ports, and trigger interfaces, making operation inconvenient.

[0003] Therefore, the light source module PCBA industry urgently needs an integrated, standardized, one-click, and fully covered dedicated test fixture for light source module PCBAs. Summary of the Invention

[0004] In view of this, it is necessary to provide a PBCA test fixture to overcome the problem that the testing functions of the existing light source module PBCA fixture are scattered, requiring multiple instruments to test in steps, resulting in extremely low efficiency.

[0005] This application provides a PCBA test fixture for a light source module, characterized in that it includes: a fixture housing, a front panel, a rear cover, a test probe assembly, a multi-channel meter module, a power supply module, a trigger test module, a communication interface module, a data recording module, a clamping and positioning mechanism, and a potentiometer adjustment mechanism. The front panel is equipped with a rocker switch, a DC fuse holder, multiple voltmeters, ammeters, and push-button switch holes. The rear cover is equipped with an AC power socket, a DB9 interface, a network port socket, and a cooling fan mounting position. The fixture housing is equipped with a test probe assembly, which makes contact with the test points of the PCBA under test one by one. The multi-channel meter module is used to simultaneously display the multiple output voltage and current values ​​of the PCBA under test; The power module provides 24V power to the fixture and the PCBA under test; The trigger test module is used to perform positive and negative connection tests of the 4-28V trigger signal and OCP overcurrent protection tests. The communication interface module includes a network port and a serial port, which are used for PCBA communication function testing. The data recording module, by binding with the host computer software, can upload test data to the host computer for problem tracing. The clamping and positioning mechanism is used to accurately position and stably clamp the PCBA to be tested. The potentiometer adjustment mechanism is used for initial current and voltage calibration adjustment of the PCBA; The fixture can perform: one-button testing, multi-channel voltage testing, standby current testing, light source output current testing, communication testing, fan testing, trigger input / output testing, OCP testing, capacitor discharge testing, full load testing, power-off memory testing, display button testing, NTC temperature testing, and initial calibration testing.

[0006] In one embodiment, the multi-channel meter module includes at least nine voltmeters and at least two ammeters, which respectively display in real time multiple voltages such as 24V, 12V, 5V, 3V, 3.3V, and 1V, as well as the standby current of the main control board, the standby current of the driver board, and the output current of the light source.

[0007] In one embodiment, the power module includes: a 24V / 1A switching power supply, an AC power socket, a main power supply with a switch, and a DC fuse holder, forming an overcurrent protection and stable power supply system.

[0008] In one embodiment, the test probe assembly is a spring-loaded pin structure, with probes installed on all the patch holders and test points. The probes are positioned without shifting, short-circuiting, or interfering with the components.

[0009] In one embodiment, the clamping and positioning mechanism includes: a positioning pin, a floating plate, an elastic pressure plate, and a pressure bar; the positioning pin precisely matches the PCBA mounting hole, the floating plate avoids gaps in the components, and the elastic pressure plate keeps the PCBA flat, without deformation, warping, or suspension.

[0010] In one embodiment, the rear cover has a DB9 interface, a network port, a fan hole, and a cable routing hole; the side of the network port has reserved space for plugging and unplugging, and the fan starts to dissipate heat when powered on.

[0011] In one embodiment, the cover plate has: 5 button switch holes, 4 F3 LED light holes, and 3 20*20 wire holes, with all holes marked with text indicating their function.

[0012] In one embodiment, the front panel, rear cover, and right mounting bracket of the fixture box are all engraved with the fixture model, part number, date, and function identifier, forming a unique nameplate identifier.

[0013] In one embodiment, the potentiometer adjustment mechanism is provided with a clearance space, allowing direct adjustment with a screwdriver for initial current and voltage calibration of the PCBA.

[0014] In one embodiment, the fixture supports 4-channel light source testing, is equipped with an ID resistor and a standard LED board, and can test the light source output current (250-280mA) in both ID mode and no ID mode.

[0015] The PBCA testing fixture provided by this invention has the following significant advantages compared with the prior art: 1. Full-featured integration testing It integrates testing functions such as voltage, current, communication, triggering, protection, heat dissipation, calibration, and display, greatly improving efficiency.

[0016] 2. Synchronous display of multiple electricity meters The design employs 9 voltmeters and 2 ammeters, which are displayed simultaneously for intuitive judgment and to reduce false readings.

[0017] 3. Precise positioning and stable probe By employing a design that combines positioning pins, elastic floating plates, and uniform pressure bars, the PCBA can be kept stable, undamaged, and achieve high test consistency.

[0018] 4. Standardized design, traceable fixtures The model number, part number, and function identifier are engraved, making them standardized and easy to manage and maintain.

[0019] 5. Simple to operate and safe and reliable It features one-button power-on, a reasonable interface layout, overcurrent protection, discharge interlock, and adequate heat dissipation, ensuring high safety.

[0020] 6. Supports calibration and aging tests Equipped with a potentiometer featuring an adjustable clearance structure, it allows for direct initial current and voltage calibration.

[0021] 7. Compatible with light source module PCBA It is specifically designed for light source driver PCBAs and supports professional functions such as 4-channel light source, ID resistor mode, and communication triggering. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a rear view of the fixture housing according to an embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figures 1 to 2This application provides a PCBA test fixture for a light source module, comprising: a fixture housing 100, a front panel 200, a rear cover 300, a test probe assembly, a multi-channel multimeter module, a power supply module, a trigger test module, a communication interface module, a clamping and positioning mechanism 400, and a potentiometer adjustment mechanism; the front panel 200 is provided with a rocker switch 21, a DC fuse holder 22, multiple voltmeters, ammeters, and push-button switch holes; the rear cover 300 is provided with an AC power socket, a DB9 interface, a network port, and a cooling fan mounting position; the test probe assembly is located inside the fixture housing 100, and the test probe assembly is connected to the PCBA under test. The test points are connected one-to-one; the multi-channel meter module is used to simultaneously display the multiple output voltage and current values ​​of the PCBA under test; the power supply module provides 24V power to the fixture and the PCBA under test; the trigger test module is used to realize the forward and reverse connection test of 4-28V trigger signal and OCP overcurrent protection test; the communication interface module includes a network port and a serial port for PCBA communication function test; the data recording module can upload test data to the host computer by binding with the host computer software, and can trace problems, demonstrating its intelligence; the clamping and positioning mechanism 400 is used to accurately position and stably clamp the PCBA under test; the potentiometer adjustment mechanism is used for PCBA initial current and voltage calibration adjustment; the fixture can realize: multi-channel voltage test, standby current test, light source output current test, communication test, fan test, trigger input and output test, OCP test, capacitor discharge test, full load test, power-off memory test, display button test, NTC temperature test and initial calibration test. After connecting to the communication, the entire process can be tested according to the prescribed steps by pressing a button, without the need for manual testing step by step.

[0027] In some optional implementations, the multi-meter module includes at least 9 voltmeters and at least 2 ammeters, which respectively display in real time multiple voltages such as 24V, 12V, 5V, 3V, 3.3V, and 1V, as well as the standby current of the main control board, the standby current of the driver board, and the output current of the light source.

[0028] In some alternative implementations, the power module includes: a 24V / 1A switching power supply, an AC power socket, a main power supply with a switch, and a DC fuse holder, forming an overcurrent protection and stable power supply system.

[0029] In some alternative implementations, the test probe assembly is a spring-loaded pin structure, with probes installed on all patch seats and test points, ensuring that the probes are not misaligned, do not short-circuit, and do not interfere with components.

[0030] In some alternative embodiments, the clamping and positioning mechanism 400 includes: a positioning pin, a floating plate, an elastic pressure plate, and a pressure bar; the positioning pin precisely matches the PCBA mounting hole, the floating plate avoids gaps in the components, and the elastic pressure plate keeps the PCBA flat, without deformation, warping, or suspension.

[0031] In some of the alternative embodiments, the rear cover 300 has a DB9 interface, a network port, a fan hole, and a cable routing hole; the side of the network port has reserved space for plugging and unplugging, and the fan starts to dissipate heat when powered on.

[0032] In some alternative implementations, the cover plate has: 5 button switch holes, 4 F3 LED light holes, and 3 20*20 wire holes, with all holes marked with text.

[0033] In some alternative embodiments, the front panel 200, rear cover 300, and right mounting bracket of the jig housing 100 are engraved with jig model, part number, date, and function identifier, forming a unique nameplate identifier.

[0034] In some alternative implementations, the potentiometer adjustment mechanism is provided with a clearance space, allowing direct adjustment with a screwdriver for initial current and voltage calibration of the PCBA.

[0035] In some alternative implementations, the fixture supports 4-channel light source testing, is equipped with ID resistors and a standard LED board, and can test the light source output current (250-280mA) with and without ID mode.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PCBA test fixture for a light source module, characterized in that, include: Fixture housing, front panel, rear cover, test probe assembly, multi-channel meter module, power supply module, trigger test module, communication interface module, data recording module, clamping and positioning mechanism, and potentiometer adjustment mechanism; The front panel is equipped with a rocker switch, a DC fuse holder, multiple voltmeters, ammeters, and push-button switch holes. The rear cover is equipped with an AC power socket, a DB9 interface, a network port socket, and a cooling fan mounting position. The fixture housing is equipped with a test probe assembly, which makes contact with the test points of the PCBA under test one by one. The multi-channel meter module is used to simultaneously display the multiple output voltage and current values ​​of the PCBA under test; The power module provides 24V power to the fixture and the PCBA under test; The trigger test module is used to perform positive and negative connection tests of the 4-28V trigger signal and OCP overcurrent protection tests. The communication interface module includes a network port and a serial port, which are used for PCBA communication function testing. The data recording module, by binding with the host computer software, can upload test data to the host computer for problem tracing. The clamping and positioning mechanism is used to accurately position and stably clamp the PCBA to be tested. The potentiometer adjustment mechanism is used for initial current and voltage calibration adjustment of the PCBA; The fixture can perform: one-button testing, multi-channel voltage testing, standby current testing, light source output current testing, communication testing, fan testing, trigger input / output testing, OCP testing, capacitor discharge testing, full load testing, power-off memory testing, display button testing, NTC temperature testing, and initial calibration testing.

2. The PCBA test fixture according to claim 1, characterized in that, The multi-channel meter module includes at least 9 voltmeters and at least 2 ammeters, which display in real time multiple voltages such as 24V, 12V, 5V, 3V, 3.3V, and 1V, as well as the standby current of the main control board, the standby current of the driver board, and the output current of the light source.

3. The PCBA test fixture according to claim 1, characterized in that, The power module includes: a 24V / 1A switching power supply, an AC power socket, a main power supply with a switch, and a DC fuse holder, forming an overcurrent protection and stable power supply system.

4. The PCBA test fixture according to claim 1, characterized in that, The test probe assembly is a spring-loaded pin structure. All patch seats and test points are equipped with probes. The probes are positioned without deviation, short circuit, or interference with components.

5. The PCBA test fixture according to claim 1, characterized in that, The clamping and positioning mechanism includes: a positioning pin, a floating plate, an elastic pressure plate, and a pressure bar; the positioning pin is precisely matched with the PCBA mounting hole, the floating plate avoids gaps in the components, and the elastic pressure plate keeps the PCBA flat, without deformation, warping, or suspension.

6. The PCBA test fixture according to claim 1, characterized in that, The rear cover has a DB9 interface, a network port, a fan hole, and a cable routing hole; the side of the network port has reserved space for plugging and unplugging, and the fan starts to dissipate heat when powered on.

7. The PCBA test fixture according to claim 1, characterized in that, The cover plate has the following features: 5 button switch holes, 4 F3 LED light holes, and 3 20*20 wire holes. All holes are marked with text indicating their function.

8. The PCBA test fixture according to claim 1, characterized in that, The front panel, rear cover, and right mounting bracket of the fixture box are all engraved with the fixture model, part number, date, and function identifier, forming a unique nameplate.

9. The PCBA test fixture according to claim 1, characterized in that, The potentiometer adjustment mechanism is equipped with a clearance space, allowing for direct adjustment using a screwdriver, and is used for initial current and voltage calibration of the PCBA.

10. The PCBA test fixture according to claim 1, characterized in that, The fixture supports 4-channel light source testing, is equipped with ID resistors and a standard LED board, and can test the light source output current (250-280mA) in both ID mode and no ID mode.

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