PCB testing device

Abstract

The utility model discloses a printed circuit board (PCB) testing device, which comprises a fixed frame and a plurality of adapters, and a PCB to be tested is placed in the fixed frame. The adapter interfaces are arranged on the fixing frame, each adapter interface is connected with a corresponding cable, the cables are cables required when the PCB is tested, the cables comprise signal lines, power lines and compensation lines, and the distribution positions of the adapter interfaces are matched with the distribution positions of interfaces on the PCB; and each adapter interface is provided with two connecting ends, one connecting end is connected with the cable, and the other connecting end is connected with a corresponding interface on the PCB to be tested. According to the PCB testing device and the PCB testing method, the cables required for testing the PCBs are connected with the corresponding adapters in advance, the cables do not need to be replaced when the PCBs, especially the PCBs of the same model are tested, only the PCBs need to be placed on the fixing frame in sequence, the interfaces on the PCBs correspond to the adapters, the PCBs can be directly tested, the time for pulling and inserting the cables is saved, and the testing efficiency of the PCBs is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic component testing technology, and in particular to a PCB testing device. Background Technology

[0002] Currently, after PCB (Printed Circuit Board) flexible boards are mounted, they need to be tested, especially the connection tests of the TP (test point) section. At present, PCB testing is mainly done manually. The testing process mainly involves: manually placing the board, connecting the wires to the PCB interfaces, and then manually operating equipment to press the board for testing; after the test, the quality of the PCB is determined based on the display. Since PCBs typically have multiple interfaces, a large number of wire insertions and removals are required for each PCB. This testing process requires a lot of manpower and time. Furthermore, manual testing is prone to omissions, which cannot guarantee the testing results or the efficiency of the testing process. Utility Model Content

[0003] This invention provides a PCB testing device to solve the problems of unreliable testing results and low testing efficiency in manual PCB testing.

[0004] This utility model provides a PCB testing device, including:

[0005] A fixed frame is used to place the PCB to be tested within the fixed frame.

[0006] Multiple adapters are provided, each adapter is mounted on the fixed frame, and each adapter is connected to a corresponding cable. The cable is required for testing the PCB and includes signal lines, power lines, and compensation lines. The distribution of the adapters is adapted to the distribution of the interfaces on the PCB.

[0007] Each of the adapters has two connection ends: one connection end is connected to the cable, and the other connection end is connected to the corresponding interface on the PCB to be tested.

[0008] Optionally, the fixing frame includes a base plate and an outer frame, the outer frame being higher than the base plate and forming a groove with the base plate, and the PCB to be tested being placed in the groove.

[0009] Optionally, the fixing frame has a square structure, and the adapters are distributed on the edges of the four sides of the fixing frame.

[0010] Optionally, the four sides of the fixed frame are a first side, a second side, a third side, and a fourth side; the first side is parallel to the second side, and the third side is parallel to the fourth side.

[0011] The adapter corresponding to the signal line is located at the edge of the first side;

[0012] The number of power cords is 2, and the adapters corresponding to the 2 power cords are respectively located on the edges of the second side and the fourth side;

[0013] The adapter corresponding to the compensation line is located at the edge of the fourth side.

[0014] Optionally, the cable also includes a ribbon cable, one end of which is connected to the adapter and the other end of which is connected to the lighting machine, the lighting machine being provided with a panel;

[0015] The four sides of the fixed frame are a first side, a second side, a third side, and a fourth side; the first side is parallel to the second side, the first side is parallel to the second side, and the third side is parallel to the fourth side.

[0016] The adapter corresponding to the ribbon cable is located on the edge of the third side.

[0017] Optionally, both the signal line and the compensation line are connected to the computer terminal where the tester is located.

[0018] Optionally, the PCB testing apparatus further includes:

[0019] The buckle is used to tightly connect the PCB to be tested to the fixed frame. The buckle includes two first and second snap-fit ​​parts that are intersected in the joint area. The first and second snap-fit ​​parts rotate about a rotation axis in the joint area and are fixed to each other. The first and second snap-fit ​​parts form a gripping area on one side of the joint area and a snap-fit ​​interface on the other side.

[0020] Optionally, when the PCB to be tested is tightly connected to the fixing frame, one of the first latching part and the second latching part abuts against the top of the PCB to be tested, and the other abuts against the bottom of the fixing frame.

[0021] Optionally, there may be multiple latches, and the latches may act at least at the positions of the adapters connected to the signal line, the power line, and the compensation line.

[0022] Optionally, the number of signal lines is at least two.

[0023] This utility model provides a PCB testing device, including a fixed frame and multiple adapters. The PCB to be tested is placed inside the fixed frame. The adapters are mounted on the fixed frame, and each adapter connects to a corresponding cable. The cables are those required for PCB testing, including signal lines, power lines, and compensation lines. The adapters are positioned to correspond to the interfaces on the PCB. Each adapter has two ends: one connects to the cable, and the other connects to the corresponding interface on the PCB. Since the cables required for PCB testing are pre-connected to the corresponding adapters, there is no need to connect various cables during testing. Especially when testing PCBs of the same model, there is no need to change cables. Simply place the PCB onto the fixed frame sequentially, ensuring the interfaces on the PCB correspond to the adapters, and the PCB can be tested directly. This saves time on cable plugging and unplugging, improving PCB testing efficiency. Furthermore, the use of adapters reduces safety hazards such as circuit burnout due to poor contact.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a PCB testing device provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a snap-fit ​​structure provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of a buckle acting on a PCB and a fixing frame according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of another PCB testing device provided in an embodiment of the present invention.

[0030] The above figures include the following reference numerals:

[0031] 1. Fixing frame; 2. Adapter; 3. PCB; 4. Cable; 41. Signal cable; 42. Power cable; 43. Compensation cable; 44. Ribbon cable; 5. Computer terminal; 6. Power supply; 7. Lighting machine; 8. Clip; 81. First snap-fit ​​part; 82. Second snap-fit ​​part; 83. Joint. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0033] The PCB testing mentioned in this utility model mainly involves functional and performance testing of the PCB. Functional testing refers to testing the normal operation of the PCB system by inputting specific signals or voltages according to the PCB design requirements. Performance testing refers to testing the performance of the PCB circuit under different operating conditions, such as different operating conditions caused by different voltages, currents, frequencies, and other parameters. In addition, temperature testing and EMC testing can also be performed on the PCB. Temperature testing examines the operation of the PCB circuit at different temperatures to check for overheating or performance degradation. EMC testing examines the operation of the PCB circuit under electromagnetic interference conditions to check whether it meets standards.

[0034] Figure 1 This is a schematic diagram of a PCB testing device provided in an embodiment of the present invention. The PCB testing device can be placed on an operating table. Figure 1 As shown, the PCB testing device includes a fixed frame 1 and multiple adapters 2; the PCB 3 to be tested is placed inside the fixed frame 1, so the internal area of ​​the fixed frame 1 must be larger than the overall area of ​​the PCB 3 to be tested. The adapters 2 are located on the fixed frame 1, and each adapter 2 connects to a corresponding cable 4 (in... Figure 1 The diagram shows the specific cables included in cable 4. Cable 4 is the cable required for testing PCB 3, and includes signal line 41, power line 42, and compensation line 43. It is understood that the frame of the fixing frame 1 has a certain width to accommodate the aforementioned adapter 2 or to ensure a stable connection between the adapter 2 and the fixing frame 1. Optionally, the width of the frame of the fixing frame 1 is at least greater than half the width of each adapter 2. When more than half of the area / volume of the adapter 2 can be placed on the fixing frame 1, the center of gravity of the adapter 2 can be located on the fixing frame 1, and thus the adapter 2 can be relatively stably positioned on the fixing frame 1.

[0035] The location of adapter 2 is adapted to the location of the interfaces on PCB 3. For example, as shown in... Figure 1 As shown, assuming Figure 1 The interfaces on the left side of PCB 3, from top to bottom, are signal A and signal B interfaces, respectively. Figure 1 The adapters 2 on the left side of the fixed frame 1, from top to bottom, are the adapters for signal A and signal B interfaces, respectively. The distribution of adapters 2 corresponds to the distribution of interfaces on the PCB 3. This ensures that when the PCB 3 is correctly placed on the fixed frame 1, the corresponding adapter 2 for each interface can be directly identified, guaranteeing a correct connection between the interface and adapter 2. Optionally, adapter 2 can utilize the Type-C adapter principle to connect signals or transmit current. A Type-C adapter is a conversion device that connects Type-C format devices to devices with different interface types. Therefore, adapter 2 in this embodiment can also connect to devices with different interface types to meet the testing requirements of devices with different interface types.

[0036] Typically, there are multiple cables 4. In the existing technology, when testing each PCB 3, it is necessary to connect the cables 4 to each interface on the PCB 3 and then test them. After the test is completed, the cables 4 need to be unplugged from each interface on the PCB 3. This process is repeated, and the process of plugging and unplugging the cables 4 is complicated, time-consuming, and prone to the situation of plugging the cables 4 into the wrong interface.

[0037] However, in this utility model, one end of the adapter 2 in the fixed frame 1 is pre-connected to the cable 4, and the distribution position of each adapter 2 in the fixed frame 1 is adapted to the distribution position of the interface on the PCB 3. It is only necessary to place the PCB 3 in the fixed frame 1 and align it with the corresponding interface, eliminating the need for plugging and unplugging the cable 3. Furthermore, the position of the adapter 2 on the fixed frame 1 is fixed, and the distribution position of each adapter 2 in the fixed frame 1 is adapted to the distribution position of the interface on the PCB 3. When the PCB 3 is placed in the fixed frame 1 and plugged in, the cable 4 can be correctly plugged into the corresponding interface on the PCB 3.

[0038] Optionally, one PCB testing device can be used for each model or PCB 3 with the same outline (same interface position). When testing PCBs 3 with the same outline, the PCB testing device can be used to quickly fix the PCB 3 and connect it to various cables 3, that is, quickly connect it to the power supply 6, computer terminal 5, etc., eliminating the repeated process of plugging and unplugging cables 3 and improving the testing efficiency of PCBs.

[0039] Signal line 41 is typically used to provide signals. Signal line 41 can be connected to the computer terminal 5 where the operator is located. The computer terminal 5 can then send signals (e.g., control signals) to PCB 3 via signal line 41, and can also receive signals (e.g., operation signals) returned by PCB 3 via signal line 41. Furthermore, the computer terminal 5 can be equipped with a display, allowing the operator to observe the operation signals returned by PCB 3 to determine whether PCB 3 is operating normally.

[0040] Power lines 42 are used to provide voltage / current. There are usually two power lines 42, one for negative power and one for positive power. Both the negative and positive power lines are connected to power supply 6, which in turn supplies power to PCB 3 through power lines 42. The appropriate power line 42 can be selected based on circuit requirements, such as a single-strand wire, multi-strand wire, or copper foil wire.

[0041] Compensating wire 43 is a specialized cable that, to a certain extent, functions to measure and compensate for offset. In contrast, the primary function of ordinary conductors is to conduct electricity, providing a path for current or power. Compensating wires are made of special materials, possessing better self-coupling and mutual coupling capabilities, higher precision and sensitivity, enabling more accurate measurement and control, eliminating external interference, improving transmission accuracy, and enhancing the stability of monitoring, control, and testing systems.

[0042] It should be noted that signal line 41 and compensation line 43 are different types and are connected to computer terminal 5 respectively.

[0043] This utility model provides a PCB testing device, including a fixed frame and multiple adapters. The PCB to be tested is placed inside the fixed frame. The adapters are mounted on the fixed frame, and each adapter connects to a corresponding cable required for PCB testing. The cable includes signal lines and power lines. Each adapter has two terminals: one terminal connects to the cable, and the other terminal connects to the corresponding interface on the PCB to be tested. Since the cables required for PCB testing are pre-connected to the corresponding adapters, there is no need to connect various cables during testing. Especially when testing PCBs of the same model, there is no need to change cables. Simply place the PCB onto the fixed frame sequentially, ensuring the interfaces on the PCB correspond to the respective adapters, and the PCB can be tested directly. This saves time on cable plugging and unplugging, improving PCB testing efficiency. Furthermore, the use of adapters reduces safety hazards such as circuit burnout due to poor contact.

[0044] In an optional embodiment, the fixing frame 1 includes a base plate and an outer frame. The outer frame is higher than the base plate and forms a groove with the base plate, in which the PCB 3 to be tested is placed. Furthermore, when the groove is the same as the outer contour of the PCB 3, the PCB 3 can be easily snapped into the groove, shortening the time required to correctly place the PCB 3 in the fixing frame 1 and improving testing efficiency.

[0045] In an optional embodiment, such as Figure 1 As shown, the fixed frame 1 has a square structure, and the adapters 2 are distributed on the edges of the four sides of the fixed frame 1.

[0046] In an optional embodiment, the four sides of the fixed frame 1 are a first side, a second side, a third side, and a fourth side; the first side is parallel to the second side, and the third side is parallel to the fourth side; as shown... Figure 1 As shown, the left and right sides are the first and second sides, respectively, and the top and bottom sides are the third and fourth sides, respectively. The lengths of the first and second sides are shorter than the lengths of the third and fourth sides.

[0047] The adapter 2 corresponding to signal line 41 is located on the edge of the first side;

[0048] There are two power cords 42, and the corresponding adapters 2 for the two power cords 42 are located on the edges of the second and fourth sides, respectively.

[0049] The adapter 2 corresponding to compensation line 43 is located on the edge of the fourth side.

[0050] It should be noted that this optional embodiment is based on a defined PCB structure and is only shown as an optional example. It is not intended to limit the position of the adapter 2 of this utility model. In other optional embodiments, the position of each adapter 2 is adapted to the PCB structure.

[0051] For example, the following arrangements are also possible:

[0052] Case 1:

[0053] The adapter 2 corresponding to signal line 41 is located on the edge of the second side; there are two power lines 42, and the adapter 2 corresponding to the two power lines 42 are located on the edges of the first side and the fourth side, respectively; the adapter 2 corresponding to compensation line 43 is located on the edge of the fourth side.

[0054] Case 2:

[0055] The adapter 2 corresponding to signal line 41 is located at the edge of the first side; there are two power lines 42, and the adapter 2 corresponding to the two power lines 42 are located at the edges of the second and third sides respectively; the adapter 2 corresponding to compensation line 43 is located at the edge of the third side.

[0056] In an optional embodiment, the cable 4 further includes a ribbon cable 44, one end of which is connected to the adapter 2 and the other end of which is connected to the lighting machine 7. The lighting machine 7 is provided with a panel; the panel is a display panel, specifically an LED or OLED display panel.

[0057] The four sides of the fixed frame 1 are the first side, the second side, the third side, and the fourth side; the first side is parallel to the second side, and the third side is parallel to the fourth side.

[0058] The adapter 2 corresponding to ribbon cable 44 is located on the edge of the third side.

[0059] Connecting PCB 3 and the light-emitting device 7 via ribbon cable 44 allows testing of PCB 3's display control function on the panel.

[0060] Generally speaking, the width of the interface corresponding to ribbon cable 44 is relatively large. Therefore, the interface corresponding to ribbon cable 44 is usually set on the long side of the fixed frame 1.

[0061] Furthermore, the lighting machine 7 has an L-shaped structure, and a support frame is provided at the bottom of the lighting machine 7. The panel is placed on the support frame, and the panel is perpendicular to the bottom of the support frame. The bottom of the support frame is parallel to the plane where the fixed frame 1 is located. Thus, the panel can be perpendicular to the plane where the fixed frame 1 is located, which makes it convenient for the staff to observe the display of the panel and determine the control function of the PCB 3 based on the display.

[0062] In an optional embodiment, both signal line 41 and compensation line 43 are connected to the computer terminal 5 where the tester is located.

[0063] In an optional embodiment, Figure 2 This is a schematic diagram of a snap-fit ​​structure, such as... Figure 2 As shown, the PCB testing device also includes a latch 8, which is used to tightly connect the PCB 3 to be tested to the fixing frame 1. The latch 8 includes two intersecting parts, a first latching part 81 and a second latching part 82, in the joint 83 region. The first latching part 81 and the second latching part 82 rotate around a rotation axis in the joint 83 region and are fixed to each other. The first latching part 81 and the second latching part 82 form a gripping area on one side of the joint 83 region and a latching interface on the other side. It can be seen that after the PCB 3 is placed on the fixing frame 1 and the interface is aligned, the latch 8 can be used to fasten the PCB 3 and the fixing frame 1.

[0064] In an optional embodiment, such as Figure 3 As shown, Figure 3This is a schematic diagram of a latch acting on a PCB and a fixing frame. When the latch 8 tightly connects the PCB 3 to be tested to the fixing frame 1, one of the first latching part 81 and the second latching part 82 abuts against the top of the PCB 3 to be tested, and the other abuts against the bottom of the fixing frame 1.

[0065] In an optional embodiment, Figure 4 This is a schematic diagram of another PCB testing device, such as... Figure 4 As shown, there are multiple latches 8, and each latch 8 operates at least at the position of the adapter 2 connected to the signal line 41, power line 42, and compensation line 43. Figure 3 As shown, the clips 8 are located at the positions of these adapters 2, which allows for a tighter connection between the adapter 2 and the PCB 3. This prevents deviations in test signals or phenomena caused by loose or detached cables 4 during testing, saving testing and troubleshooting time. It should be noted that... Figure 4 In this invention, the first snap-fit ​​portion 81 or the second snap-fit ​​portion 82 of the buckle 8 covers the entire position of the adapter 2, but the first snap-fit ​​portion 81 or the second snap-fit ​​portion 82 of the buckle 8 may only cover part of the position of the adapter 2, as long as the buckle 8 can achieve the fastening effect. This invention does not impose any restrictions on this.

[0066] In an optional embodiment, such as Figure 1 As shown, the number of signal lines 41 is at least 2.

[0067] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of description and simplification of operation. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0069] In the description of this specification, references to terms such as "embodiment" and "example" refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PCB testing device, characterized in that, include: A fixed frame is used to place the PCB to be tested within the fixed frame. Multiple adapters are provided, each adapter is mounted on the fixed frame, and each adapter is connected to a corresponding cable. The cable is required for testing the PCB and includes signal lines, power lines, and compensation lines. The distribution of the adapters is adapted to the distribution of the interfaces on the PCB. Each of the adapters has two connection ends: one connection end is connected to the cable, and the other connection end is connected to the corresponding interface on the PCB to be tested.

2. The PCB testing apparatus as described in claim 1, characterized in that, The fixing frame includes a base plate and an outer frame. The outer frame is higher than the base plate and forms a groove with the base plate. The PCB to be tested is placed in the groove.

3. The PCB testing apparatus as described in claim 1, characterized in that, The fixed frame has a square structure, and the adapters are distributed on the edges of the four sides of the fixed frame.

4. The PCB testing apparatus as described in claim 3, characterized in that, The four sides of the fixed frame are a first side, a second side, a third side, and a fourth side; the first side is parallel to the second side, and the third side is parallel to the fourth side. The adapter corresponding to the signal line is located at the edge of the first side; The number of power cords is 2, and the adapters corresponding to the 2 power cords are respectively located on the edges of the second side and the fourth side; The adapter corresponding to the compensation line is located at the edge of the fourth side.

5. The PCB testing apparatus as described in claim 3, characterized in that, The cable also includes a ribbon cable, one end of which is connected to the adapter and the other end of which is connected to the lighting machine, which has a panel. The four sides of the fixed frame are a first side, a second side, a third side, and a fourth side; the first side is parallel to the second side, the first side is parallel to the second side, and the third side is parallel to the fourth side. The adapter corresponding to the ribbon cable is located on the edge of the third side.

6. The PCB testing apparatus according to any one of claims 1-5, characterized in that, Both the signal line and the compensation line are connected to the computer terminal where the tester is located.

7. The PCB testing apparatus according to any one of claims 1-5, characterized in that, Also includes: The buckle is used to tightly connect the PCB to be tested to the fixed frame. The buckle includes two first and second snap-fit ​​parts that are intersected in the joint area. The first and second snap-fit ​​parts rotate around a rotation axis in the joint area and are fixed to each other. The first and second snap-fit ​​parts form a gripping area on one side of the joint area and a snap-fit ​​interface on the other side.

8. The PCB testing apparatus as described in claim 7, characterized in that, When the buckle tightly connects the PCB to be tested to the fixing frame, one of the first snap-fit ​​part and the second snap-fit ​​part abuts against the top of the PCB to be tested, and the other abuts against the bottom of the fixing frame.

9. The PCB testing apparatus as described in claim 7, characterized in that, The number of the latches is multiple, and the latches act at least on the positions of the adapters connected to the signal line, the power line and the compensation line.

10. The PCB testing apparatus according to any one of claims 1-5, characterized in that, The number of signal lines is at least two.

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