A set-top box mainboard probe test fixture and test method

Abstract

The present application relates to the technical field of testing tooling and fixtures, and in particular to a set-top box motherboard probe test fixture and a testing method, comprising a bottom frame, a plurality of columns are arranged on the bottom frame, a top frame is arranged on the upper ends of the plurality of columns, sliding support blocks are symmetrically and slidably arranged between the top frame and the bottom frame through the columns, connecting shafts are rotatably arranged at the opposite ends of the two sliding support blocks, a connecting frame is arranged between the two connecting shafts through a bracket, and a clamp is arranged on the connecting frame; when the sliding rod of the present invention gathers into the connecting frame or moves out of the garbage frame, the L-shaped clamp block is loosened under the action of a torsion spring to release the motherboard, and at the same time, the L-shaped clamp block pushes the set-top box motherboard out of the airport clamping groove under the action of the torsion spring, and the fixing effect of the stabilizing rod can improve the positioning accuracy of the clamping block during the movement process, ensuring that the clamping block can accurately reach the predetermined position, thereby accurately clamping or releasing the set-top box motherboard.

Description

Technical Field

[0001] The present application relates to the technical field of testing tooling and fixtures, and in particular to a set-top box mainboard probe testing fixture and a testing method. Background Art

[0002] A set-top box (STB) is an electronic device that receives signals from cable TV, satellite TV, Internet TV or terrestrial TV broadcasts and converts them into a format that can be displayed on TV. The main function of a set-top box is to decode digital TV signals and provide services such as high-definition TV, interactive TV services, video on demand, and Internet access.

[0003] One of the core components of a set-top box is the motherboard, which is equivalent to the "brain" of the set-top box and is responsible for processing all data and signals. The motherboard integrates key components such as the processor, memory, storage device, network interface, video decoder, etc. These components work together to ensure that the set-top box can perform various functions efficiently.

[0004] In order to ensure the quality and performance of the set-top box motherboard, manufacturers usually conduct a series of tests, among which the probe test fixture is an important test tool. This fixture contacts the test points on the motherboard through precise probes to measure electrical parameters such as voltage, current, resistance, etc.

[0005] By detecting whether each electronic component on the mainboard is working normally and whether the circuit connection is correct, it is ensured that the performance of the mainboard meets the design requirements; such as the probe-type test fixture with publication number CN102854453B, which relates to the technical field of test tooling and fixtures. The prior art includes a test bench and a tester. The test bench is provided with a copper column for fixing the circuit board, and a sliding rod parallel to the copper column is provided above the test bench. Both ends of the sliding rod are fixed to the test bench through a connecting rod. At least two rings are sleeved on the sliding rod, and the rings can slide on the sliding rod. A locking screw is provided on the ring. A telescopic rod perpendicular to the sliding rod is fixed on the ring. A test probe is provided at the other end of the telescopic rod, and the test probe is electrically connected to the tester.

[0006] However, the above existing technologies still have some defects when testing circuit boards:

[0007] 1. In the above-mentioned prior art, the test bench is provided with copper pillars for fixing the circuit board. The copper pillars are used to fix the circuit board to ensure that it remains stable during the test process. However, due to the diversity of circuit boards, including different sizes, shapes and electronic component layouts, the design of the copper pillars is often difficult to adapt to all types of circuit boards, which means that in practical applications, the copper pillars may not be able to provide the best fixing effect for all circuit boards; at the same time, the copper pillars are fixed as fixing points. After long-term use, due to factors such as mechanical wear or vibration, the circuit board cannot be accurately positioned, and slight movement occurs. During the test process, the slight movement of the circuit board may cause damage to the solder joints, affecting the electrical performance and reliability of the circuit board. This damage will not only reduce the quality of the circuit board, but may also lead to inaccurate test results, thereby affecting the efficiency of the entire production process and product quality.

[0008] 2. In the above-mentioned prior art, the test bench is provided with copper pillars for fixing the circuit board. When the probe is detecting the circuit board, only one side thereof can be detected, while both sides of a conventional circuit board are usually covered with circuits and solder joints. Therefore, both sides need to be detected to ensure the integrity and functionality of the circuit board. However, the test bench design of the above-mentioned prior art cannot detect the solder joints on the other side at the same time when performing single-sided detection, which limits the comprehensiveness of the test.

[0009] Based on this, under the above-mentioned statement of view, the existing technology for testing the set-top box motherboard still has room for improvement. Summary of the invention

[0010] In order to solve the above technical problems, the present application provides a set-top box motherboard probe test fixture and test method, which adopts the following technical solutions:

[0011] In a first aspect, a probe test fixture for a set-top box motherboard includes a bottom frame, a plurality of columns are arranged on the bottom frame, a top frame is arranged on the upper ends of the plurality of columns, sliding support blocks are symmetrically and slidably arranged between the top frame and the bottom frame through the columns, connecting shafts are rotatably arranged at the opposite ends of two sliding support blocks, a connecting frame is arranged between the two connecting shafts through a bracket, and a clamp is arranged on the connecting frame;

[0012] The clamp comprises a plurality of sliding rods slidably arranged on the circumference of a connecting frame, a clamping bevel gear threadedly connected to the sliding rods is rotatably arranged on the connecting frame, a sliding hole is provided on the sliding rod, and a sliding block is slidably arranged in the sliding hole.

[0013] Preferably, a transmission shaft is provided between the sliding blocks on the same side of the connection frame for common rotation, and a transmission support block for supporting the transmission shaft is provided on the connection frame, and a transmission bevel gear meshing with the clamping bevel gear is provided on the transmission shaft, and the four transmission shafts are connected by meshing of bevel gears;

[0014] One end of the sliding rod is provided with a clamping member.

[0015] Preferably, the clamping member includes a U-shaped clamping block provided at one end of the sliding rod. Clamping grooves are formed at both horizontal ends of the U-shaped clamping block. An L-shaped clamping block is rotatably arranged in the clamping groove through a torsion spring. Buffer pads are arranged in both the U-shaped clamping block and the L-shaped clamping block.

[0016] Preferably, a stabilizing rod is arranged on one side of the U-shaped clamping block and slidably penetrates through a connecting frame.

[0017] Preferably, a detector is arranged on the top frame;

[0018] The detector includes a sliding frame slidably arranged in the top frame. Driving screws threadedly connected to the sliding frame are rotatably penetrated through both sides of the top frame. One ends of the two driving screws are connected by a belt drive. A servo motor connected to one of the driving screws is arranged on the top frame;

[0019] The sliding frame is provided with a detecting member.

[0020] Preferably, the detecting member includes a threaded lead screw arranged in the sliding frame. A plurality of sliders slidably connected to the threaded lead screw are slidably arranged in the sliding frame. Connecting gears are rotatably arranged on the sliders. Driving motors are arranged on the sliders. Driving gears meshing with the connecting gears are arranged on driving ends of the driving motors;

[0021] A detecting probe is arranged at the lower end of the slider.

[0022] Preferably, the detecting probe includes a hollow needle base arranged at the bottom of the slider. A detecting needle rod is slidably arranged in the hollow needle base. A conductive needle tip is arranged at the lower end of the detecting needle rod. The conductive needle tip is provided with a flexible conductive end;

[0023] A detecting spring is arranged between one end of the detecting needle rod and the hollow needle base.

[0024] Preferably, a stabilizing ring is slidably arranged on the detecting needle rod. A plurality of stabilizing pressure rods are arranged on the stabilizing ring. Rubber pads are arranged at ends of the stabilizing pressure rods;

[0025] A reset spring is arranged between the stabilizing ring and the hollow needle base.

[0026] Preferably, a driving member is arranged between the bottom frame and the top frame;

[0027] The driving member includes driving shafts symmetrically and rotatably penetrated between the bottom frame and the top frame, and the driving shafts are threadedly connected to sliding support blocks.

[0028] In a second aspect, a set-top box mainboard probe test method is provided, wherein the test method comprises the following steps:

[0029] S1: Material preparation. When testing the set-top box mainboard, first place the set-top box mainboard in the connection frame, and then drive multiple transmission shafts to rotate together through the existing motor drive technology, so that several sliding rods gather into the bottom frame;

[0030] S2: Stable clamping, the sliding rod drives the clamping piece at one end of the sliding rod to move toward the set-top box mainboard until the clamping piece clamps and fixes the set-top box mainboard;

[0031] S3: Detection preparation, then the servo motor drives the driving screw to rotate, the driving screw rotation controls the precise movement of the sliding frame, and the driving motor drives the connecting gear to rotate, the rotating connecting gear drives the slider to move in the sliding frame through the threaded match with the threaded screw, and the slider drives the detection probe set at its lower end to move together, so as to accurately locate the specific point on the set-top box mainboard;

[0032] S4: rising detection, then starting the driving member arranged between the bottom frame and the top frame, the driving member drives the sliding support block to drive the connecting frame to move from the bottom frame to the top frame, and drives the set-top box mainboard to move upward together through the clamp arranged on the connecting frame, so that the set-top box mainboard contacts the detection probe;

[0033] S5: contact detection, the detection probe contacts a specific point on the set-top box mainboard to detect electrical parameters, and the data collected by the detection probe is transmitted to the control system through the detector for analysis to determine whether the electrical performance of the set-top box mainboard meets the standards;

[0034] S6: The mainboard descends, and then the driving member arranged between the bottom frame and the top frame is started, and the driving member drives the sliding support block to drive the connecting frame to move from the bottom frame to the top frame, and drives the mainboard of the set-top box to move downward together through the clamp arranged on the connecting frame;

[0035] S7: After the material is unloaded, a plurality of sliding rods move outward from the bottom frame, and the sliding block remains stationary under the support of the transmission shaft, but moves relative to the sliding rods in the sliding holes. At the same time, the sliding rods drive the clamping parts to move outward from the bottom frame until the clamping parts release the set-top box mainboard, thereby completing a set-top box mainboard detection.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. When the sliding rods of the present invention gather towards the connection frame, the sliding rods will drive the U-shaped clamping blocks to move together. As the sliding rods move, the edge of the set-top box main board will contact one end of the L-shaped clamping blocks, causing the two L-shaped clamping blocks to rotate to clamp the set-top box main board. When several sliding rods move outwards from the connection frame, the U-shaped clamping blocks in multiple directions move simultaneously, and the L-shaped clamping blocks will gradually move away from the set-top box main board. The L-shaped clamping blocks are loosened under the action of the torsion springs, releasing the set-top box main board. At the same time, the L-shaped clamping blocks push the set-top box main board out of the airport clamping groove under the action of the torsion springs. Meanwhile, the stabilizing rods ensure that the U-shaped clamping blocks remain stable during the sliding process, preventing shaking or deviation caused by sliding. Through the fixing effect of the stabilizing rods, the positioning accuracy of the U-shaped clamping blocks during movement can be improved, ensuring that the U-shaped clamping blocks can accurately reach the predetermined positions, thereby precisely clamping or releasing the set-top box main board. The presence of the buffer pads ensures a soft clamping force, avoiding hard clamping of the set-top box main board and protecting the set-top box main board from damage.

[0038] 2. The driving member of the present invention will drive the sliding support block to drive the connection frame to move from the bottom frame to the top frame. The clamping device provided on the connection frame drives the set-top box main board to move upwards together, so that the set-top box main board contacts the detection probe. The detection probe contacts specific points on the set-top box main board to perform electrical parameter detection, such as resistance, capacitance, voltage, etc. The data collected by the detection probe is transmitted to the control system through the detector for analysis to determine whether the electrical performance of the set-top box main board meets the standards. At the same time, the conductive tips on the detection probe have a certain flexibility to adapt to solder joints at different heights, ensuring good electrical contact. A detection spring is provided between one end of the detection needle rod and the hollow needle seat. The detection spring provides a constant contact force to ensure stable contact between the conductive tip and the solder joint.

[0039] 3. When the drive shaft drives the sliding support block to move to the bottom plate through threaded connection, the drive motor stops. At this time, the transmission gear set on the bottom frame by the motor will mesh with the flipping gear, and then the motor will drive the transmission gear to rotate. The rotating transmission gear will drive the flipping gear to rotate through meshing, and the connection frame will be flipped 180 degrees by driving the connecting shaft through the flipping gear, thereby exposing the previously undetected side for detection. Description of the Drawings

[0040] Figure 1 is the structural schematic diagram of the first perspective of the present invention.

[0041] Figure 2 is the structural schematic diagram of the clamping device of the present invention.

[0042] Figure 3 is the present invention Figure 2 Local enlarged view at A in.

[0043] Figure 4It is a schematic structural diagram of the clamping member of the present invention.

[0044] Figure 5 It is a schematic structural diagram of the detector of the present invention.

[0045] Figure 6 It is a cross-sectional view of the detector of the present invention.

[0046] Figure 7 It is a cross-sectional view of the detection member of the present invention.

[0047] Figure 8 It is a schematic structural diagram of the detection probe of the present invention.

[0048] Fig. 9 It is a schematic structural diagram of the driving member of the present invention.

[0049] Fig.10 It is the present invention Fig. 9 Partial enlarged view at position B in

[0050] Fig.11 It is the present invention Fig. 9 Partial enlarged view at position C in

[0051] Explanation of reference numerals: 1, bottom frame; 11, vertical column; 2, top frame; 3, sliding support block; 31, connecting shaft; 4, connecting frame; 5, gripper; 51, sliding rod; 52, clamping bevel gear; 53, sliding hole; 54, sliding block; 55, transmission shaft; 56, transmission support block; 57, transmission bevel gear; 6, clamping member; 61, U-shaped clamping block; 62, clamping groove; 63, L-shaped clamping block; 64, buffer pad; 65, stabilizing rod; 7, detector; 71, sliding frame; 72, driving screw; 73, servo motor; 74, detection member; 741, threaded lead screw; 742, slider; 743, connecting gear; 744, driving motor; 745, driving gear; 8, detection probe; 81, hollow needle seat; 82, detection needle rod; 83, conductive tip; 831, flexible conductive end; 84, detection spring; 85, stabilizing ring; 86, stabilizing pressure rod; 87, rubber pad; 88, return spring; 9, driving member; 91, driving shaft; 92, driving motor; 93, flipping gear; 94, transmission gear. Detailed implementation manners

[0052] The following further elaborates on this application Figures 1 to 11 with reference to the attached drawings.

[0053] The embodiment of this application discloses a probe test fixture and test method for a set-top box main board. By fixing and limiting the set-top box main board, and then electrically detecting the solder joints on the set-top box main board to detect whether the circuits between the solder joints are connected, and whether there are short circuits or open circuits.

[0054] Embodiment 1:

[0055] The solder joints on the set-top box motherboard are the key points for connecting electronic components to the circuit board. Ensuring the circuit connectivity between these solder joints is the basis for ensuring the normal operation of the set-top box.

[0056] Reference Figure 1 A probe test fixture for a set-top box motherboard includes a bottom frame 1, a plurality of columns 11 are arranged on the bottom frame 1, a top frame 2 is arranged on the upper ends of the plurality of columns 11, sliding blocks 3 are symmetrically and slidably arranged between the top frame 2 and the bottom frame 1 through the columns 11, connecting shafts 31 are rotatably arranged at the opposite ends of the two sliding blocks 3, and a connecting frame 4 is arranged between the two connecting shafts 31 through a bracket.

[0057] When testing the set-top box motherboard, first fix the set-top box motherboard through the clamp 5 set on the connecting frame 4, and then start the driving member 9 set between the bottom frame 1 and the top frame 2. The driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 to the top frame 2, and drive the set-top box motherboard to move together through the clamp 5 set on the connecting frame 4.

[0058] Then, the set-top box mainboard is inspected by the detector 7 arranged on the top frame 2; the clamp 5 directly contacts the solder joints on the set-top box mainboard by using the detection probe 8 to perform an electrical connectivity test, thereby accurately detecting whether the circuit between the solder joints is connected, and whether there is a short circuit or an open circuit.

[0059] After the detector 7 completes the detection of the set-top box mainboard, the driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the top frame 2 to the bottom frame 1, and the clamp 5 provided on the connecting frame 4 will drive the set-top box mainboard to move together, and then the clamp 5 will release the set-top box mainboard that has completed the detection, thereby completing the detection of one side of the mainboard.

[0060] Reference Figure 2 and Figure 3 Specifically, the clamp 5 includes a plurality of sliding rods 51 slidably arranged on the circumference of the connecting frame 4, the sliding rods 51 are provided with sliding holes 53, and sliding blocks 54 are slidably arranged in the sliding holes 53. A transmission shaft 55 is arranged to rotate together between the sliding blocks 54 on the same side of the connecting frame 4.

[0061] When testing the set-top box motherboard, first place the set-top box motherboard in the connecting frame 4, and then use the existing motor driving technology to drive one of the transmission shafts 55 to rotate, and a transmission support block 56 for supporting the transmission shaft 55 is provided on the connecting frame 4. Since the four transmission shafts 55 are connected by bevel gear meshing, when one of the transmission shafts 55 is rotated, it will drive the other transmission shafts 55 to rotate together by the bevel gear meshing.

[0062] The rotating transmission shaft 55 will drive the transmission bevel gear 57 arranged on the transmission shaft 55 to rotate together. The rotating transmission bevel gear 57 will drive the clamping bevel gear 52 rotatably arranged on the connecting frame 4 to rotate through meshing. The rotating clamping bevel gear 52 will drive the sliding rod 51 to move on the bottom frame 1 through the threaded connection with the sliding rod 51, so that a plurality of sliding rods 51 gather towards the inside of the bottom frame 1. The sliding block 54 will remain stationary under the support of the transmission shaft 55, but move relative to the sliding rod 51 in the sliding hole 53 to ensure the rotation of the transmission shaft 55 and the meshing of the transmission bevel gear 57 and the clamping bevel gear 52.

[0063] At the same time, the sliding rod 51 will drive the clamping member 6 arranged at one end of the sliding rod 51 towards the set-top box main board until the clamping member 6 clamps and fixes the set-top box main board. Then, the driving member 9 arranged between the bottom frame 1 and the top frame 2 is started. The driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 towards the top frame 2, and drive the set-top box main board to move together through the clamp 5 arranged on the connecting frame 4.

[0064] After the detector 7 completes the detection of the set-top box main board, the driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the top frame 2 towards the bottom frame 1, drive the set-top box main board to move together through the clamp 5 arranged on the connecting frame 4, and then drive one of the transmission shafts 55 to reverse through the existing motor driving technology. When one of the transmission shafts 55 rotates, it will drive the other transmission shafts 55 to reverse together through the meshing of bevel gears.

[0065] The reversed transmission shaft 55 will drive the transmission bevel gear 57 arranged on the transmission shaft 55 to rotate together. The rotating transmission bevel gear 57 will drive the clamping bevel gear 52 rotatably arranged on the connecting frame 4 to rotate through meshing. The rotating clamping bevel gear 52 will drive the sliding rod 51 to move on the bottom frame 1 through the threaded connection with the sliding rod 51, so that a plurality of sliding rods 51 move towards the outside of the bottom frame 1. The sliding block 54 will remain stationary under the support of the transmission shaft 55, but move relative to the sliding rod 51 in the sliding hole 53 to ensure the rotation of the transmission shaft 55 and the meshing of the transmission bevel gear 57 and the clamping bevel gear 52; at the same time, the sliding rod 51 will drive the clamping member 6 to move towards the outside of the bottom frame 1 until the clamping member 6 releases the set-top box main board, thus completing one detection of the main board.

[0066] Refer to Figure 3 and Figure 4 , wherein, the clamping member 6 includes a U-shaped clamping block 61 arranged at one end of the sliding rod 51, and clamping grooves 62 are formed at both horizontal ends of the U-shaped clamping block 61.

[0067] When several sliding rods 51 gather towards the inside of the connecting frame 4, the sliding rods 51 will drive the U-shaped clamping block 61 to move together. An L-shaped clamping block 63 is rotatably arranged in the clamping groove 62 through a torsion spring (not shown in the figure). As the sliding rod 51 moves, the edge of the set-top box main board will contact one end of the L-shaped clamping block 63, causing the two L-shaped clamping blocks 63 to rotate to clamp the set-top box main board. Buffer pads 64 are arranged in both the U-shaped clamping block 61 and the L-shaped clamping block 63. The presence of the buffer pads 64 ensures the softness of the clamping force, avoids hard clamping of the set-top box main board, and protects the set-top box main board from damage.

[0068] Conversely, when several sliding rods 51 move towards the outside of the connecting frame 4, the U-shaped clamping blocks 61 in multiple directions move simultaneously. The L-shaped clamping block 63 will gradually move away from the set-top box main board. The L-shaped clamping block 63 is loosened under the action of the torsion spring, releasing the set-top box main board. At the same time, the L-shaped clamping block 63 pushes the set-top box main board out of the clamping groove 62 under the action of the torsion spring.

[0069] One side of the U-shaped clamping block 61 is provided with a stabilizing rod 65 that slidably penetrates the connecting frame 4. When the sliding rod 51 drives the U-shaped clamping block 61 to move, the stabilizing rod 65 ensures that the U-shaped clamping block 61 remains stable during the sliding process, preventing shaking or deviation caused by sliding. Through the fixing effect of the stabilizing rod 65, the positioning accuracy of the U-shaped clamping block 61 during the movement can be improved, ensuring that the U-shaped clamping block 61 can accurately reach the predetermined position, thereby precisely clamping or releasing the set-top box main board.

[0070] Refer to Figures 5 to 7 , specifically, the detector 7 includes a sliding frame 71 slidably arranged in the top frame 2. The sliding frame 71 can slide in the top frame 2. Driving screws 72 threadedly connected to the sliding frame 71 are rotatably penetrated through both sides of the top frame 2.

[0071] Through a servo motor 73 arranged on the top frame 2, the servo motor 73 will drive one of the driving screws 72 it is connected to to rotate. Since one end of the two driving screws 72 is connected by a belt drive, the rotating driving screw 72 will drive the other driving screw 72 to rotate synchronously through transmission. The driving screw 72 is threadedly connected to the sliding frame 71, and the rotation of the driving screw 72 can control the precise movement of the sliding frame 71.

[0072] The sliding frame 71 will drive the detection component 74 arranged thereon to move together. The detector 7 will conduct an electrical connectivity test on the set-top box main board to detect whether the circuits between the solder joints are connected, and whether there are short circuits or open circuits.

[0073] Among them, the detection component 74 includes a threaded screw rod 741 arranged in the sliding frame 71. A plurality of sliders 742 slidably connected to the threaded screw rod 741 are slidably arranged in the sliding frame 71. Connecting gears 743 are rotatably arranged on the sliders 742.

[0074] While the sliding frame 71 moves, the driving motor 744 provided on the slider 742 will start, and the driving motor 744 will drive the driving gear 745 provided on its driving end to rotate. The rotating driving gear 745 will drive the connecting gear 743 to rotate through engagement, and the rotating connecting gear 743 will drive the slider 742 to move in the sliding frame 71 through threaded cooperation with the threaded screw 741, and the slider 742 will drive the detection probe 8 provided at its lower end to move together.

[0075] The combined design of the threaded screw 741 and the slider 742 allows the slider 742 to perform precise linear movement under the control of the drive motor 744, thereby achieving precise positioning of a specific point on the set-top box mainboard. After the slider 742 moves into position, the detection probe 8 at its lower end contacts a specific point on the set-top box mainboard to detect electrical parameters such as resistance, capacitance, voltage, etc. The data collected by the detection probe 8 is transmitted to the control system through the detector 7 for analysis to determine whether the electrical performance of the set-top box mainboard meets the standards.

[0076] Reference Figure 7 and Figure 8 Specifically, the detection probe 8 includes a hollow needle seat 81 arranged at the bottom of the slider 742, a detection needle rod 82 is slidably arranged in the hollow needle seat 81, and a conductive needle tip 83 is arranged at the lower end of the detection needle rod 82.

[0077] The driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 to the top frame 2, and drive the set-top box mainboard to move together through the clamp 5 set on the connecting frame 4, so that the set-top box mainboard contacts the flexible conductive end 831 set by the conductive needle tip 83; the flexible conductive end 831 contacts the solder joint on the set-top box mainboard, and the conductive needle tip 83 has a certain flexibility to adapt to solder joints of different heights to ensure good electrical contact. A detection spring 84 is set between one end of the detection needle rod 82 and the hollow needle seat 81, and the detection spring 84 provides a constant contact force to ensure stable contact between the conductive needle tip 83 and the solder joint.

[0078] When the slider 742 moves to the predetermined position, the set-top box mainboard rises and contacts the flexible conductive end 831 of the conductive needle tip 83. After the conductive needle tip 83 contacts the solder joint, the detection system can measure the electrical parameters of the solder joint, such as resistance, capacitance, voltage, etc. The data collected by the detection probe 8 is transmitted to the control system through the detector 7 for analysis to determine whether the electrical performance of the solder joint meets the standards.

[0079] After the detection is completed, the driving motor 744 can rotate in the reverse direction, so that the connection frame 4 drives the set-top box mainboard to move downward back to the initial position, and away from the conductive needle tip 83 to separate the conductive needle tip 83 from the solder joint, ready for the next detection.

[0080] Among them, a stabilizing ring 85 is slidably arranged on the detection needle rod 82. When the flexible conductive end 831 contacts the solder joint on the set-top box mainboard, a plurality of stabilizing pressure rods 86 arranged on the stabilizing ring 85 are used to contact the set-top box mainboard. The rubber pad 87 arranged at the end of the stabilizing pressure rod 86 provides a buffer at the end of the stabilizing pressure rod 86, reduces the direct pressure on the solder joint, protects the set-top box mainboard from damage, and ensures the stability of the detection probe 8 when contacting the set-top box mainboard, thereby improving the detection accuracy and reliability.

[0081] A return spring 88 is arranged between the stabilizing ring 85 and the hollow needle seat 81, and the return spring 88 is used to provide elastic force for the stabilizing ring 85 to ensure that the stabilizing pressure rod 86 contacts the set-top box mainboard through the stabilizing pressure rod 86, so that the detection probe 8 is stable during the detection process.

[0082] Reference Fig. 9 The driving member 9 includes a driving shaft 91 symmetrically and rotatably arranged between the bottom frame 1 and the top frame 2. The driving shaft 91 is driven to rotate by a driving motor 92 connected to the driving shaft 91 and arranged on the top frame 2. The rotating driving shaft 91 will force the sliding support block 3 to move on the column 11 through a threaded connection with the sliding support block 3. The movement of the sliding support block 3 drives the connecting frame 4 and the clamp 5 to move together, thereby realizing the clamping, positioning and release of the set-top box mainboard. When the sliding support block 3 moves upward, the clamp 5 clamps the set-top box mainboard; when the sliding support block 3 moves downward, the clamp 5 releases the set-top box mainboard.

[0083] The precise control of the drive motor 92 ensures the accuracy of the moving speed and position of the sliding support block 3, which is crucial to ensure the accuracy and repeatability of the test process.

[0084] Embodiment 2:

[0085] Reference Fig. 9 , Fig.10 and Fig.11 , based on the first embodiment, in order to ensure that the solder joints on both sides of the set-top box mainboard can be detected, the detection range needs to cover both sides of the entire set-top box mainboard.

[0086] The connecting shaft 31 is rotatably arranged on the sliding support block 3, and a flip gear 93 is arranged on one of the connecting shafts 31. After the set-top box mainboard completes the detection, the driving shaft 91 drives the sliding support block 3 to move to the bottom plate through a threaded connection, and the driving motor 92 stops. At this time, the transmission gear 94 arranged on the bottom frame 1 through the motor will engage with the flip gear 93, and then the motor will drive the transmission gear 94 to rotate, and the rotating transmission gear 94 will drive the flip gear 93 to rotate through the engagement, and the connecting shaft 31 is driven by the flip gear 93 to flip the connecting frame 4 180 degrees, thereby exposing the previously undetected side in preparation for detection.

[0087] Afterwards, the driving motor 92 is started, and the sliding support block 3 is driven to drive the connecting shaft 31 through the driving shaft 91 again, so that the connecting frame 4 moves upward to contact the detection conductive needle tip 83, and at the same time, the transmission gear 94 is disengaged from the flip gear 93.

[0088] Finally, the present invention also provides a set-top box mainboard probe testing method, and the test method includes the following steps:

[0089] S1: Material preparation. When testing the set-top box mainboard, first place the set-top box mainboard in the connecting frame 4, and then use the existing motor drive technology to drive multiple transmission shafts 55 to rotate together, so that several sliding rods 51 gather into the bottom frame 1, and the sliding block 54 will remain stationary under the support of the transmission shaft 55, but move relative to the sliding rod 51 in the sliding hole 53 to ensure the rotation of the transmission shaft 55 and the meshing of the transmission bevel gear 57 and the clamping bevel gear 52.

[0090] S2: Stable clamping, the sliding rod 51 drives the clamping member 6 provided at one end of the sliding rod 51 to move toward the set-top box mainboard until the clamping member 6 clamps and fixes the set-top box mainboard.

[0091] S3: Detection preparation, then the servo motor 73 will drive the driving screw 72 to rotate, the driving screw 72 is threadedly connected to the sliding frame 71, the rotation of the driving screw 72 can control the precise movement of the sliding frame 71, while the sliding frame 71 moves, the driving motor 744 arranged on the slider 742 will start, the driving gear 745 will drive the connecting gear 743 to rotate through meshing, the rotating connecting gear 743 will drive the slider 742 to move in the sliding frame 71 through the threaded cooperation with the threaded screw 741, and the slider 742 will drive the detection probe 8 arranged at its lower end to move together, so as to accurately locate the specific point on the set-top box mainboard.

[0092] S4: Rise detection, then start the driving member 9 set between the bottom frame 1 and the top frame 2, the driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 to the top frame 2, and drive the set-top box mainboard to move upward together through the clamp 5 set on the connecting frame 4, so that the set-top box mainboard contacts the detection probe 8.

[0093] S5: Contact detection, the detection probe 8 contacts a specific point on the set-top box mainboard to detect electrical parameters, such as resistance, capacitance, voltage, etc. The data collected by the detection probe 8 is transmitted to the control system through the detector 7 for analysis to determine whether the electrical performance of the set-top box mainboard meets the standards.

[0094] S6: The mainboard descends, and then the driving member 9 set between the bottom frame 1 and the top frame 2 is started. The driving member 9 drives the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 to the top frame 2, and drives the set-top box mainboard to move downward together through the clamp 5 set on the connecting frame 4.

[0095] S7: Flip detection, when the driving shaft 91 drives the sliding support block 3 to move to the bottom plate through the threaded connection, the driving motor 92 stops, and the transmission gear 94 set on the bottom frame 1 through the motor will engage with the flip gear 93, and then the motor will drive the transmission gear 94 to rotate, and the rotating transmission gear 94 will drive the flip gear 93 to rotate through the engagement, and the flip gear 93 drives the connecting shaft 31 to flip the connecting frame 4 180 degrees, thereby exposing the previously undetected side for preparation for detection.

[0096] S8: descend again, and then start the driving member 9 arranged between the bottom frame 1 and the top frame 2 again, the driving member 9 will drive the sliding support block 3 to drive the connecting frame 4 to move from the bottom frame 1 to the top frame 2, and drive the set-top box mainboard to move downward together through the clamp 5 arranged on the connecting frame 4;

[0097] S9: After the material is unloaded, a number of sliding rods 51 move outward from the bottom frame 1, and the sliding block 54 remains stationary under the support of the transmission shaft 55, but moves relative to the sliding rod 51 in the sliding hole 53. At the same time, the sliding rod 51 drives the clamping member 6 to move outward from the bottom frame 1 until the clamping member 6 releases the set-top box mainboard, thereby completing a set-top box mainboard detection.

[0098] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A set-top box motherboard probe test fixture, comprising a bottom frame (1), a plurality of columns (11) being arranged on the bottom frame (1), a top frame (2) being arranged on the upper ends of the plurality of columns (11), characterized in that: A sliding support block (3) is symmetrically and slidably arranged between the top frame (2) and the bottom frame (1) through a column (11). Connecting shafts (31) are rotatably arranged at the relative ends of the two sliding support blocks (3). A connecting frame (4) is jointly arranged between the two connecting shafts (31) through a bracket. A gripper (5) is arranged on the connecting frame (4); The gripper (5) includes a plurality of sliding rods (51) slidably penetrating through the circumference of the connecting frame (4). A clamping bevel gear (52) threadedly connected to the sliding rods (51) is rotatably arranged on the connecting frame (4). A sliding hole (53) is formed in the sliding rod (51), and a sliding block (54) is also slidably arranged in the sliding hole (53); A transmission shaft (55) is rotatably penetrated through the sliding blocks (54) on the same side of the connecting frame (4), and a transmission support block (56) for supporting the transmission shaft (55) is arranged on the connecting frame (4). A transmission bevel gear (57) meshing with the clamping bevel gear (52) is arranged on the transmission shaft (55). The four transmission shafts (55) are all connected by means of bevel gear meshing; One end of the sliding rod (51) is provided with a clamping member (6); The clamping member (6) includes a U-shaped clamping block (61) arranged at one end of the sliding rod (51). Clamping grooves (62) are formed at the two horizontal ends of the U-shaped clamping block (61). An L-shaped clamping block (63) is rotatably arranged in the clamping groove (62) through a torsion spring. Buffer pads (64) are arranged in both the U-shaped clamping block (61) and the L-shaped clamping block (63); A detector (7) is arranged on the top frame (2); The detector (7) includes a sliding frame (71) slidably arranged in the top frame (2). Driving screws (72) threadedly connected to the sliding frame (71) are rotatably penetrated through both sides of the top frame (2). One ends of the two driving screws (72) are connected by means of belt transmission. A servo motor (73) connected to one of the driving screws (72) is arranged on the top frame (2); The sliding frame (71) is provided with a detecting member (74); The detecting member (74) includes a threaded lead screw (741) arranged in the sliding frame (71). A plurality of sliders (742) slidably connected to the threaded lead screw (741) are slidably arranged in the sliding frame (71). A connecting gear (743) is rotatably arranged on the slider (742). A driving motor (744) is arranged on the slider (742). A driving gear (745) meshing with the connecting gear (743) is arranged on the driving end of the driving motor (744); A detection probe (8) is arranged at the lower end of the slider (742); A driving member (9) is arranged between the bottom frame (1) and the top frame (2); The driving member (9) includes a driving shaft (91) symmetrically and rotatably penetrated between the bottom frame (1) and the top frame (2), and the driving shaft (91) is threadedly connected to the sliding support block (3).

2. A set-top box motherboard probe test fixture according to claim 1, characterized in that: A stabilizing rod (65) slidably penetrating through the connecting frame (4) is arranged on one side of the U-shaped clamping block (61).

3. A set-top box motherboard probe test fixture according to claim 1, characterized in that: The detection probe (8) comprises a hollow needle seat (81) arranged at the bottom of the slider (742), a detection needle rod (82) is slidably arranged in the hollow needle seat (81), a conductive needle tip (83) is arranged at the lower end of the detection needle rod (82), and the conductive needle tip (83) is provided with a flexible conductive end (831); A detection spring (84) is provided between one end of the detection needle rod (82) and the hollow needle seat (81).

4. A set-top box motherboard probe test fixture according to claim 3, characterized in that: A stabilizing ring (85) is slidably disposed on the detection needle rod (82), a plurality of stabilizing pressure rods (86) are disposed on the stabilizing ring (85), and rubber pads (87) are disposed at the ends of the stabilizing pressure rods (86); A return spring (88) is provided between the stabilizing ring (85) and the hollow needle seat (81).

5. A set-top box motherboard probe test method, comprising a set-top box motherboard probe test fixture as claimed in any one of claims 1 to 4, characterized in that: The test method includes the following steps: S1: Material preparation. When testing the set-top box mainboard, the set-top box mainboard is first placed in the connection frame (4), and then the multiple transmission shafts (55) are driven to rotate together through the existing motor driving technology, so that the multiple sliding rods (51) gather into the bottom frame (1); S2: Stable clamping, the sliding rod (51) drives the clamping member (6) at one end of the sliding rod (51) to move toward the set-top box mainboard until the clamping member (6) clamps and fixes the set-top box mainboard; S3: Detection preparation, then the servo motor (73) drives the driving screw (72) to rotate, the driving screw (72) rotates to control the precise movement of the sliding frame (71), and at the same time the driving motor (744) drives the connecting gear (743) to rotate, the rotating connecting gear (743) drives the sliding block (742) to move in the sliding frame (71) through the threaded engagement with the threaded screw (741), and the sliding block (742) drives the detection probe (8) arranged at its lower end to move together, so as to accurately locate a specific point on the mainboard of the set-top box; S4: ascending detection, then starting a driving member (9) disposed between the bottom frame (1) and the top frame (2), the driving member (9) driving the sliding support block (3) to drive the connecting frame (4) to move from the bottom frame (1) to the top frame (2), and driving the set-top box mainboard to move upward together through the clamp (5) disposed on the connecting frame (4), so that the set-top box mainboard contacts the detection probe (8); S5: contact detection, the detection probe (8) contacts a specific point on the set-top box mainboard to detect electrical parameters, and the data collected by the detection probe (8) is transmitted to the control system through the detector (7) for analysis to determine whether the electrical performance of the set-top box mainboard meets the standards; S6: the mainboard descends, and then the driving member (9) arranged between the bottom frame (1) and the top frame (2) is started, the driving member (9) drives the sliding support block (3) to drive the connecting frame (4) to move from the bottom frame (1) to the top frame (2), and drives the mainboard of the set-top box to move downward together through the clamp (5) arranged on the connecting frame (4); S7: After the material is unloaded, the plurality of sliding rods (51) move outward from the bottom frame (1), while the sliding block (54) remains stationary under the support of the transmission shaft (55), but moves relative to the sliding rods (51) in the sliding holes (53). At the same time, the sliding rods (51) drive the clamping member (6) to move outward from the bottom frame (1) until the clamping member (6) releases the set-top box mainboard, thereby completing a set-top box mainboard detection.

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