Vehicle-mounted LED lamp panel electrical performance test tool

Abstract

The utility model provides a kind of vehicle-mounted LED lamp panel electric performance test tool, it is related to a kind of test tool, including test probe block, test probe block includes probe plug block, primary floating block and secondary floating block, the plug-in end of probe plug block is used to cooperate with test interface patching and is plugged, the installation end of probe plug block is connected with primary floating block horizontal circumferential floating by primary floating rod, primary floating block is connected with secondary floating block along longitudinal floating by secondary floating rod;Floating clearance on horizontal circumferential, the maximum value range of floating clearance is 0.5-1mm, adjustment clearance for secondary compression spring compression activity is equipped between primary floating block and secondary floating block, the utility model can be matched with test equipment to realize automated, batch testing production, and flexibility and convenience are also better.

Description

Technical Field

[0001] This utility model relates to a testing fixture, and more particularly to a testing fixture for the electrical performance of an automotive LED light board. Background Technology

[0002] The automotive LED light board, or PCB board under test, contains LED beads, driving circuits for controlling the brightness of the LED beads, and test interface components for connecting with test probe blocks to conduct the LED bead circuit. During production, it is necessary to design electrical performance testing fixtures to cooperate with testing equipment in order to achieve more automated and batch performance testing of the brightness, voltage, and current parameters of the LEDs on the PCB board. Utility Model Content

[0003] Based on the above objectives, this utility model provides a testing fixture for the electrical performance of automotive LED light boards, which can be used in conjunction with testing equipment to achieve automated and batch testing and production, and also offers better flexibility and convenience.

[0004] This utility model provides the following technical solution: A test fixture for testing the electrical performance of an automotive LED light board includes a test probe block. The test probe block includes a probe insert, a primary floating block, and a secondary floating block. The insertion end of the probe insert is used to insert and cooperate with a test interface component. The mounting end of the probe insert is connected to the primary floating block through a primary floating rod. The primary floating block and the secondary floating block are connected through a secondary floating rod. The bottom end of the first-stage floating rod is fixedly connected to the mounting end of the probe insert. The probe insert is positioned and abutted against the first-stage floating block by the first-stage floating rod. The first-stage floating block has a first-stage floating groove for accommodating the first-stage floating rod. The first-stage floating groove also has an inwardly protruding first-stage convex ring. The top end of the first-stage floating rod has a first-stage protrusion. The first-stage protrusion is pressed and limited on the first-stage convex ring. There is a horizontal circumferential floating gap between the first-stage floating rod and the first-stage convex ring. The maximum value of the floating gap is 0.5-1mm. The bottom end of the second-stage floating rod is fixedly connected to the first-stage floating block. The second-stage floating rod is guided through a guide groove. The top end of the second-stage floating rod also has a second-stage protrusion. The second-stage protrusion is limited at the top end of the guide groove. A set of second-stage compression springs is pressed between the bottom end of the guide groove and the first-stage floating block. There is an adjustment gap between the first-stage floating block and the second-stage floating block for the compression movement of the second-stage compression springs. Thus, the test probe block is fixed in position by the top of the secondary floating block. During testing, if there is an error in the position of the test interface component on the PCB, it can be adjusted by the horizontal circumferential movement of the primary floating block. The adjustment error is less than the maximum value of the floating gap, which allows the probe block to be aligned and inserted into the test interface component for conduction. Furthermore, during insertion, since there is a floating gap between the primary and secondary floating blocks for the secondary compression spring to press against the component, a flexible pressing insertion operation can be provided to improve the flexibility and reliability of the insertion.

[0005] Preferably, the primary floating rod and the secondary floating rod are each arranged in four groups in a rectangular pattern.

[0006] Preferably, a first-stage torsion spring is provided between the first-stage convex ring and the probe insertion block mounting end, which is sleeved on the first-stage floating rod. The bottom end of the first-stage torsion spring is fixed to the probe insertion block mounting end, while the top end of the first-stage torsion spring is fixed to the first-stage convex ring. Thus, the elastic force of the first-stage torsion spring can ensure that the position of the probe insertion block relative to the floating block can be maintained in an initial position before force is applied.

[0007] Preferably, it further includes a set of tooling support plates for positioning the PCB board and a set of tooling pressure plates positioned above the tooling support plates for positioning the test probe blocks. The test probe blocks are used to insert and cooperate with the test interface components on the PCB board under the drive of the pressure cylinder to perform electrical performance testing of the LEDs on the PCB board.

[0008] Preferably, multiple sets of PCB boards are positioned on the tooling support plate, and each set of test probe blocks is provided with positioning rods on both sides of the tooling pressure plate. The positioning rods are used to elastically position the two ends of the PCB board to ensure the stability of the PCB board during floating adjustment.

[0009] Preferably, the bottom side of the tooling support plate is slidably mounted on the sliding base block and is driven by a lead screw to slide out from under the tooling pressure plate. Therefore, when loading PCB boards, the convenience of loading can be improved by sliding the tooling support plate out from under the tooling pressure plate.

[0010] Preferably, the bottom end of the probe block is provided with a guide slope for guiding insertion into the test interface patch.

[0011] The beneficial effects of this utility model are as follows: The electrical performance testing fixture for automotive LED light boards provided by this utility model uses a test probe block whose position is fixed by the top of a secondary floating block. It can be used with testing equipment to achieve automated and batch testing and production, and it is more flexible and convenient. During testing, if there is an error in the position of the test interface component on the PCB board, it can be adjusted by the horizontal circumferential movement of the primary floating block. The adjustment error is less than the maximum value of the floating gap, which can achieve the alignment of the probe block with the test interface component after adjustment and insertion. Furthermore, during insertion, since there is a floating gap between the primary and secondary floating blocks for the secondary compression spring to press against, it can provide a flexible pressing insertion operation, thereby improving the flexibility and reliability of the insertion. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A schematic diagram of the structure after removing the tooling pressure plate; Figure 3 This is a schematic diagram of a set of test probe blocks aligned with a set of PCB boards; Figure 4 This is a schematic diagram of the test probe block; Figure 5 yes Figure 4 Top view; Figure 6 yes Figure 4 Sectional view of section AA; Markings in the diagram: 1. Test probe block; 2. Test interface component; 3. PCB board; 4. Tooling support plate; 5. Tooling pressure plate; 6. Pressure cylinder; 7. Positioning pressure rod; 8. Sliding base block; 9. Lead screw; 11. Probe insertion block; 12. Primary floating block; 13. Secondary floating block; 14. Primary floating rod; 15. Secondary floating rod; 16. Floating groove; 17. Protruding ring; 18. Primary protrusion; 19. Floating gap; 110. Guide groove; 111. Secondary protrusion; 112. Secondary compression spring; 113. Adjustment gap; 114. Primary torsion spring; 115. Guide slope. Detailed Implementation

[0013] Example 1 like Figure 1-6As shown, a test fixture for testing the electrical performance of an automotive LED light board is provided in this embodiment. It includes a test probe block 1, which includes a probe insert block 11, a first-level floating block 12, and a second-level floating block 13. The insertion end of the probe insert block 11 is used to insert and cooperate with the test interface patch 2. The mounting end of the probe insert block 11 is connected to the first-level floating block 12 through a first-level floating rod 14. The first-level floating block 12 and the second-level floating block 13 are connected through a second-level floating rod 15. The bottom end of the primary floating rod 14 is fixedly connected to the mounting end of the probe insert 11. The probe insert 11 is positioned and abuts against the primary floating block 12 by the primary floating rod 14. The primary floating block 12 has a primary floating groove 16 for accommodating the primary floating rod 14. The primary floating groove 16 also has an inwardly protruding primary ring 17. The top end of the primary floating rod 14 has a primary protrusion 18, which presses against and limits the primary ring 17. There is a horizontal circumferential floating gap 19 between the primary floating rod 14 and the primary ring 17. The maximum value range is 0.5-1mm. The bottom end of the secondary floating rod 15 is fixedly connected to the primary floating block 12. The secondary floating rod 15 is guided through the guide groove 110. The top end of the secondary floating rod 15 is also provided with a secondary protrusion 111. The secondary protrusion 111 is limited at the top end of the guide groove 110. A set of secondary compression springs 112 is also pressed between the bottom end of the guide groove 110 and the primary floating block 12. An adjustment gap 113 is provided between the primary floating block 12 and the secondary floating block 13 for the compression movement of the secondary compression springs 112. Thus, the test probe block 1 is fixed in position by the top of the secondary floating block 13. During testing, if there is an error in the position of the test interface component 2 on the PCB board, it can be adjusted by the horizontal circumferential movement of the primary floating block 12. The adjustment error is less than the maximum value of the floating gap 19, which allows the probe insertion block 11 to be aligned with the test interface component 2 for insertion and conduction. During insertion, since there is a floating gap 19 between the primary floating block 12 and the secondary floating block 13 for the secondary compression spring 112 to press against, a flexible pressing insertion operation can be provided to improve the flexibility and reliability of the insertion.

[0014] A test fixture for the electrical performance of an automotive LED light board includes a set of fixture support plates 4 for positioning a PCB board 3 and a set of fixture pressure plates 5 positioned above the fixture support plates 4 for positioning test probe blocks 1. The test probe blocks 1 are used to insert and cooperate with the test interface patch 2 on the PCB board 3 under the drive of the pressure cylinder 6 to perform electrical performance testing of the LED lights on the PCB board.

[0015] Multiple sets of PCB boards 3 are positioned on the tooling support plate 4, and each set of test probe blocks 1 is also provided with positioning pressure rods 7 positioned on the tooling pressure plate 5 on both sides. The positioning pressure rods 7 are used to elastically position the two ends of the PCB board 3 to ensure the stability of the PCB board during floating adjustment.

[0016] The bottom side of the tooling support plate 4 is slidably mounted on the sliding base block 8 and is driven by the lead screw 9 to slide out from under the tooling pressure plate 5. Therefore, when loading PCB boards, the tooling support plate 4 can be slid out from under the tooling pressure plate 5 to improve the convenience of loading.

[0017] Example 2 like Figure 6 As shown, a vehicle-mounted LED light board electrical performance testing fixture is provided. In this embodiment, the first-stage floating rod 14 and the second-stage floating rod 15 are both arranged in four sets in a rectangular pattern.

[0018] A primary torsion spring 114 is also provided between the primary convex ring 17 and the mounting end of the probe insert 11, which is sleeved on the primary floating rod 14. The bottom end of the primary torsion spring 114 is fixed to the mounting end of the probe insert 11, while the top end of the primary torsion spring 114 is fixed to the primary convex ring 17. Thus, the elastic force of the primary torsion spring 114 can ensure that the position of the probe insert 11 relative to the floating block can be maintained in an initial position before force is applied.

[0019] The bottom end of the probe insert 11 is provided with a guide slope 115 for guiding insertion into the test interface patch 2.

[0020] The working principle of this utility model is as follows: This utility model provides a test fixture for the electrical performance of an automotive LED light board. The test probe block 1 is fixed in position by the top of the secondary floating block 13. It can cooperate with the test equipment to achieve automated and batch testing and production, and has better flexibility and convenience. During testing, if there is an error in the position of the test interface patch 2 on the PCB board, it can be adjusted by the floating of the primary floating block 12 in the horizontal circumferential direction. The adjustment error is less than the maximum value of the floating gap 19, so that the probe insertion block 11 can be adjusted and aligned with the test interface patch 2 for insertion and conduction. During insertion, since there is a floating gap 19 between the primary floating block 12 and the secondary floating block 13 for the secondary compression spring 112 to press and move, it can provide elastic pressing insertion operation to improve the flexibility and reliability of insertion.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing fixture for the electrical performance of an automotive LED light board, characterized in that, The test probe block includes a probe insert, a primary floating block, and a secondary floating block. The insertion end of the probe insert is used to engage with the test interface component. The mounting end of the probe insert is connected to the primary floating block via a primary floating rod. The primary floating block and the secondary floating block are connected via a secondary floating rod. The bottom end of the primary floating rod is fixedly connected to the mounting end of the probe insert. The probe insert is positioned and abutted against the primary floating block by the primary floating rod. The primary floating block has a primary floating groove for accommodating the primary floating rod. The primary floating groove also has an inwardly protruding primary ring. The top end of the primary floating rod has a primary protrusion that presses against and limits the primary ring. There is a horizontal circumferential floating gap between the primary floating rod and the primary ring. The maximum value of the floating gap is 0.5-1mm. The bottom end of the secondary floating rod is fixedly connected to the primary floating block. The secondary floating rod is guided through a guide groove. The top end of the secondary floating rod also has a secondary protrusion that limits the top end of the guide groove. A set of secondary compression springs presses against the bottom end of the guide groove and the primary floating block. There is an adjustment gap between the primary and secondary floating blocks for the compression of the secondary compression springs.

2. The electrical performance testing fixture for vehicle-mounted LED light boards according to claim 1, characterized in that, Both the primary and secondary floating rods are arranged in four sets in a rectangular pattern.

3. The electrical performance testing fixture for a vehicle-mounted LED light board according to claim 2, characterized in that, A primary torsion spring is also provided between the primary convex ring and the probe insertion block mounting end, and is sleeved on the primary floating rod. The bottom end of the primary torsion spring is fixed to the probe insertion block mounting end, while the top end of the primary torsion spring is fixed to the primary convex ring.

4. The electrical performance testing fixture for vehicle-mounted LED light boards according to claim 1, characterized in that, It also includes a set of tooling support plates for positioning the PCB board and a set of tooling pressure plates positioned above the tooling support plates for positioning the test probe blocks. The test probe blocks are used to insert and cooperate with the test interface components on the PCB board under the drive of the pressure cylinder to perform electrical performance testing of the LEDs on the PCB board.

5. The electrical performance testing fixture for a vehicle-mounted LED light board according to claim 4, characterized in that, Multiple sets of PCB boards are positioned on the tooling support plate, and each set of test probe blocks is provided with positioning rods on both sides of the tooling pressure plate. The positioning rods are used to elastically position the PCB boards at both ends.

6. The electrical performance testing fixture for a vehicle-mounted LED light board according to claim 5, characterized in that, The bottom side of the tooling support plate is slidably mounted on the sliding base block and is driven by a lead screw to slide out from under the tooling pressure plate.

7. The electrical performance testing fixture for a vehicle-mounted LED light board according to claim 5, characterized in that, The bottom end of the probe block is provided with a guide slope for guiding insertion into the test interface patch.

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