Circuit board fuse detection jig

Abstract

The utility model provides a circuit board fuse detection tool comprising a machine body which is provided with a test chamber with an opening at one side; the quick-change module comprises an upper quick-change module and a lower quick-change module, the upper quick-change module and the lower quick-change module are arranged at the top and the bottom of the test chamber respectively, the upper quick-change module can move up and down relative to the chamber and is provided with an upper test probe connected with an external test machine, and the lower quick-change module is used for bearing a circuit board to be tested; the lower test probe is connected with the test machine; the driving cylinder is connected with the quick-change upper module; the sensing assembly is arranged on the lower quick-change module and is used for sensing whether the circuit board to be detected is arranged on the lower quick-change module or not; and the controller is at least connected with the driving air cylinder and the sensing assembly so as to control the upper test probes to move to be in contact connection with the corresponding fuses when the circuit board to be tested is located on the lower quick-change module. The circuit board fuse detection tool can rapidly and effectively detect the circuit board fuse.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of motherboard detection, and particularly relates to a circuit board fuse detection fixture. Background Art

[0002] At present, when the motherboard of an electronic device is tested by ATE / FCT, during the manual FCT test, the tester often needs to plug and unplug the cable multiple times for testing. This often leads to incorrect operations such as plugging in the wrong way or in the reverse direction, and such operations all have the risk of damaging the fuse of the MB motherboard. Therefore, fuse testing is an essential test after the FCT test of the MB motherboard.

[0003] Currently, the main principle of fuse testing is to ground one end of all fuses, and connect the other end to different input points of the testing device in sequence. Then, the LED lights of the testing device and the high and low levels of the input end are used to determine whether the fuse is defective.

[0004] However, in the existing testing principle, one end of all fuses to be tested is grounded, and the other ends are respectively connected to different input ends. This often causes misjudgment in actual application, resulting in some fuses being judged as "connected" in the "broken" state. In addition, when the detection voltage of +3.3V is input to one end of the fuse, there is a risk of damaging other components on the MB motherboard. Moreover, some fuses on the MB motherboard are in parallel with capacitors, and in the traditional testing method, the electricity stored in the capacitors on the MB can also cause the risk of damaging the optocoupler in the test board. Summary of the Utility Model

[0005] The utility model provides a circuit board fuse detection fixture, which can quickly and effectively detect the circuit board fuse with high application safety.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a circuit board fuse detection fixture, including:

[0007] A body having a test chamber with an open side;

[0008] A quick-change module, including an upper quick-change module and a lower quick-change module. The upper quick-change module and the lower quick-change module are respectively detachably and oppositely arranged at the top and bottom of the test chamber. The upper quick-change module can move up and down relative to the chamber, and the upper quick-change module has an upper test probe connected to an external test machine. The lower quick-change module is used to carry the circuit board to be tested and has a lower test probe connected to the test machine. The upper test probe and the lower test probe are respectively used to connect different fuses on the circuit board to be tested, so that the test machine can obtain the test data of the fuses;

[0009] A driving cylinder, connected to the quick-change upper module, is used to drive the quick-change upper module to move;

[0010] A sensing component, installed on the lower quick-change module, is used to sense whether the circuit board to be tested is placed on the lower quick-change module;

[0011] A controller, connected to at least the driving cylinder and the sensing component, is configured to control the driving cylinder to move when it is determined based on the sensing data of the sensing component that the circuit board to be tested is located on the lower quick-change module, so that the upper test probe makes contact connection with the corresponding fuse.

[0012] In some embodiments, an upper mounting plate capable of moving relative to the test chamber is provided in the test chamber. The driving cylinder is connected to the upper mounting plate, and the quick-change upper module is detachably installed on one side of the upper mounting plate facing the lower quick-change module.

[0013] In some embodiments, a plurality of first locking pins are detachably provided on the upper mounting plate for detachably connecting the quick-change upper module.

[0014] In some embodiments, guiding structures for the quick-change upper module and the lower quick-change module are cooperatively provided on the quick-change upper module and the lower quick-change module.

[0015] In some embodiments, the guiding structure includes a plurality of guiding columns provided on the quick-change upper module and a plurality of guiding grooves provided on the lower quick-change module. The plurality of guiding columns and the plurality of guiding grooves correspond to each other one by one and are respectively arranged at various positions of the quick-change upper module and the lower quick-change module.

[0016] In some embodiments, a lower mounting plate is provided in the test chamber. The lower quick-change module is detachably installed on one side of the lower mounting plate facing the upper quick-change module.

[0017] In some embodiments, a plurality of second locking pins are detachably provided on the lower mounting plate for detachably connecting the lower quick-change module.

[0018] In some embodiments, the lower mounting plate and the lower quick-change module are connected to each other through an elastic member.

[0019] In some embodiments, the sensing component is a board placement detection switch.

[0020] In some embodiments, a transfer patch panel connected to the controller, the upper test probe, and the lower test probe is provided on the machine body, and the test machine table is connected to the transfer patch panel;

[0021] A display screen is provided on the machine body. The controller is connected to the display screen to display the information uploaded by the test machine table.

[0022] Based on the disclosure of the above embodiments, the beneficial effects of the embodiments of the present utility model include that the overall structure of the jig is simple, including a machine body, a quick-change module, a driving cylinder, a sensing component and a controller. The quick-change module includes an upper quick-change module and a lower quick-change module. The upper quick-change module and the lower quick-change module are respectively detachably arranged opposite to each other at the top and bottom of the test chamber. The upper quick-change module can move up and down relative to the chamber, and the upper quick-change module has upper test probes connected to an external test machine. The lower quick-change module is used to carry the circuit board to be tested and has lower test probes connected to the test machine. The upper test probes and the lower test probes are respectively used to connect different fuses on the circuit board to be tested, so that the test machine can obtain the test data of the fuses. The driving cylinder is connected to the upper quick-change module, the sensing component is installed on the lower quick-change module, and the controller is connected to at least the driving cylinder and the sensing component. In this way, it can be determined whether the circuit board to be tested is successfully fixed on the lower quick-change module based on the sensing data of the sensing component, and after determining that the circuit board is on the lower quick-change module, the driving cylinder is controlled to move so that the upper test probes are in contact connection with the corresponding fuses. At this time, the external test equipment can detect the fuses on the circuit board to be tested, which is convenient, fast and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a circuit board fuse detection jig in an embodiment of the present utility model.

[0024] Figure 2 It is a partial structural schematic diagram of a circuit board fuse detection jig in an embodiment of the present utility model.

[0025] Figure 3 It is a partial structural schematic diagram of a circuit board fuse detection jig in an embodiment of the present utility model.

[0026] Figure 4 It is a partial structural schematic diagram of a circuit board fuse detection jig in an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 1 - Machine body; 2 - Upper quick-change module; 3 - Lower quick-change module; 4 - Driving cylinder; 5 - Upper mounting plate; 6 - Lower mounting plate; 7 - Guide post; 8 - Plate placement detection switch DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, specific embodiments of the present utility model will be described in detail with reference to the drawings, but it is not a limitation of the present utility model.

[0030] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the following description should not be construed as limiting, but merely as exemplifications of the embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the present disclosure.

[0031] The accompanying drawings, which are included in and form a part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0032] These and other features of the present utility model will become apparent from the following description of the preferred forms of the embodiments given by way of non-limiting examples with reference to the accompanying drawings.

[0033] It should also be understood that although the present utility model has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present utility model, which have the features as described in the claims and thus are all within the protection scope defined thereby.

[0034] When taken in conjunction with the accompanying drawings, the above and other aspects, features, and advantages of the present disclosure will become more apparent in view of the following detailed description.

[0035] Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the claims and a representative basis for teaching those skilled in the art to use the present disclosure in substantially any suitable detailed structure in a variety of ways.

[0036] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", which may each refer to one or more of the same or different embodiments according to the present disclosure.

[0037] Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

[0038] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a circuit board fuse detection jig, including:

[0039] A body 1 having a test chamber with one side open;

[0040] Quick-change module, including a quick-change upper module and a quick-change lower module. The quick-change upper module and the quick-change lower module are respectively detachably and oppositely arranged at the top and bottom of the test chamber. The quick-change upper module can move up and down relative to the chamber, and the quick-change upper module has an upper test probe connected to an external test machine. The quick-change lower module is used to carry the circuit board to be tested and has a lower test probe connected to the test machine. The upper test probe and the lower test probe are respectively used to connect different fuses on the circuit board to be tested, so that the test machine can obtain the test data of the fuses;

[0041] The driving cylinder 4 is connected to the quick-change upper module and is used to drive the quick-change upper module to move;

[0042] The sensing component is installed on the lower quick-change module 3 and is used to sense whether the circuit board to be tested is placed on the lower quick-change module 3;

[0043] The controller is at least connected to the driving cylinder 4 and the sensing component. When it is determined based on the sensing data of the sensing component that the circuit board to be tested is located on the lower quick-change module 3, the controller controls the driving cylinder 4 to move the quick-change upper module 2 so that the upper test probe is in contact connection with the corresponding fuse.

[0044] The test fixture of this embodiment has a simple overall structure, including a body 1, a quick-change module, a driving cylinder 4, a sensing component and a controller, wherein the quick-change module includes a quick-change upper module and a quick-change lower module, the quick-change upper module and the quick-change lower module are respectively detachably arranged at the top and bottom of the test chamber, the quick-change upper module can move up and down relative to the chamber, and the quick-change upper module has an upper test probe connected to an external test machine, the quick-change lower module is used to carry the circuit board to be tested, and has a lower test probe connected to the test machine, the upper test probe and the lower test probe are respectively used to connect the circuit board to be tested. Test different fuses on the circuit board so that the test machine can obtain the test data of the fuse; the driving cylinder 4 is connected to the quick-change upper module, the sensing component is installed on the lower quick-change module 3, and the controller is at least connected to the driving cylinder 4 and the sensing component. In this way, it is possible to determine whether the circuit board to be tested is successfully fixed on the lower quick-change module 3 based on the sensing data of the sensing component, and after determining that the bone screw is on the lower quick-change module 3, the driving cylinder 4 is controlled to move so that the upper test probe is in contact with the corresponding fuse. At this time, the external test equipment can detect the fuse on the circuit board to be tested, which is convenient and fast with good versatility. In addition, all fuses are completely isolated during the test process, so the risk of misdetection due to common anode or common cathode is eliminated, the product yield is improved, and costs are saved. During the test process, 1mA constant current is supported, and the maximum voltage is 3.3V, so it can effectively protect the product from voltage breakdown. At the same time, the constant current source method improves the test speed and test accuracy. In this embodiment, the constant current source is generated by using a high-precision DAC for program control, so the current is adjustable, which can be used not only for fuse testing, but also for conventional resistance testing, etc.

[0045] Furthermore, the upper quick-change module 2 and the lower quick-change module 3 can have multiple groups to respectively assemble different circuit boards to be tested, that is, circuit boards to be tested with different sizes or external structures. Of course, each group of quick-change modules can also be equipped with one or more circuit boards to be tested with different structures and shapes.

[0046] The test chamber is provided with an upper mounting plate 5 that can move relative to the test chamber, the driving cylinder 4 is connected to the upper mounting plate 5, and the upper quick-change module 2 is detachably mounted on a side of the upper mounting plate 5 facing the lower quick-change module 3. The driving cylinder 4 drives the upper quick-change module 2 to move up and down by driving the upper mounting plate 5 to move.

[0047] In order to facilitate the detachable connection between the upper mounting plate 5 and the upper quick-change module 2, the upper mounting plate 5 is detachably provided with a plurality of first locking pins for detachably connecting the upper quick-change module 2. The structure of the first locking pin is not unique, as long as it can stably connect the upper mounting plate 5 and the upper quick-change module 2.

[0048] A guiding structure for guiding the movement of the upper quick-change module 2 and the lower quick-change module 3 is provided in cooperation on the upper quick-change module 2 and the lower quick-change module 3. For example, it can be realized by arranging a slide rail and a sliding part along a sliding path, and the specific structure is not unique. Moreover, for the guiding structure, its installation position and quantity are not fixed, and can be flexibly set according to the size of the actual jig, etc. It is preferably arranged symmetrically to ensure stable movement.

[0049] For example, in this embodiment, the guiding structure includes multiple guiding columns 7 arranged on the upper quick-change module 2 and multiple guiding grooves arranged on the lower quick-change module 3. The multiple guiding columns 7 and the multiple guiding grooves correspond one by one and are respectively arranged at various positions of the upper quick-change module 2 and the lower quick-change module 3. As described above, the specific quantity set is not fixed.

[0050] Further, continuing to combine Figure 2 、 Figure 3 and Figure 4 shown, in order to assemble the lower mounting module, a lower mounting plate 6 is provided in the test chamber of this embodiment, and the lower quick-change module 3 is detachably mounted on one side of the lower mounting plate 6 facing the upper quick-change module 2. For the convenience of installation, a plurality of second locking pins are detachably arranged on the lower mounting plate 6 for detachably connecting the lower quick-change module 3. The second locking pin can have the same structure as the first locking pin or different, as long as it can lock the lower quick-change module 3 and the lower mounting plate 6.

[0051] In another embodiment, in order to make the test results more accurate and avoid the situation that when the upper quick-change module 2 and the lower quick-change module 3 approach during the test, the test probe cannot make good contact with the measuring point of the circuit board due to differences in the structure or thickness of the circuit board, etc., such as excessive contact, resulting in probe damage, or insufficient contact, causing poor contact, etc. To avoid this phenomenon, the lower mounting plate 6 and the lower quick-change module 3 in this embodiment are connected to each other through an elastic member. In this way, an elastic movement range can be provided between the upper quick-change module 2 and the lower quick-change module 3 to ensure stable contact and avoid excessive contact at the same time, effectively solving the above technical problems.

[0052] Further, the sensing component in this embodiment is a board placement detection switch 8. It is arranged on the lower quick-change module 3 so that when the circuit board is assembled on the lower quick-change module 3, the sensing component can sense the circuit board in the first time and send a signal to the controller in time, so that the controller controls the driving mechanism to drive the upper quick-change module 2 to move, and then the detection is completed.

[0053] Further, a transfer socket connected to the controller, the upper test probe, and the lower test probe is provided on the machine body 1 of this embodiment, and the test machine table is connected to the transfer socket, and data transmission is realized accordingly.

[0054] Meanwhile, in order to facilitate the testers to view the test process and results, a display screen is provided on the body 1, and the controller is connected to the display screen to display the information uploaded by the test machine platform.

[0055] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A circuit board fuse detection fixture, characterized in that: include: a body having a test chamber with one side open; A quick-change module, comprising a quick-change upper module and a quick-change lower module, wherein the quick-change upper module and the quick-change lower module are respectively detachably arranged at the top and bottom of the test chamber, and the quick-change upper module can move up and down relative to the chamber, and the quick-change upper module has an upper test probe connected to an external test machine, and the quick-change lower module is used to carry a circuit board to be tested, and has a lower test probe connected to the test machine, and the upper test probe and the lower test probe are respectively used to connect different fuses on the circuit board to be tested, so that the test machine can obtain test data of the fuses; A driving cylinder connected to the quick-change upper module and used for driving the quick-change upper module to move; A sensing component, mounted on the quick-change lower module, for sensing whether the circuit board to be tested is placed on the quick-change lower module; The controller is connected to at least the driving cylinder and the sensing component to control the driving cylinder to move the upper quick-change module when it is determined based on the sensing data of the sensing component that the circuit board to be tested is located on the lower quick-change module, thereby making the upper test probe contact and connect with the corresponding fuse.

2. The circuit board fuse detection fixture according to claim 1, characterized in that: An upper mounting plate capable of moving relative to the testing chamber is disposed in the testing chamber, the driving cylinder is connected to the upper mounting plate, and the upper quick-change module is detachably mounted on a side of the upper mounting plate facing the lower quick-change module.

3. The circuit board fuse detection fixture according to claim 2, characterized in that: The upper mounting plate is detachably provided with a plurality of first locking pins for detachably connecting the upper quick-change module.

4. The circuit board fuse detection fixture according to claim 1, characterized in that: The upper quick-change module and the lower quick-change module are cooperated with each other to be provided with a guiding structure for the upper quick-change module and the lower quick-change module.

5. The circuit board fuse detection jig according to claim 4, characterized in that: The guide structure includes a plurality of guide posts arranged on the upper quick-change module and a plurality of guide grooves arranged on the lower quick-change module. The plurality of guide posts and the plurality of guide grooves correspond to each other one by one and are respectively arranged at various positions of the upper quick-change module and the lower quick-change module.

6. The circuit board fuse detection jig according to claim 1, characterized in that: A lower mounting plate is disposed in the test chamber, and the lower quick-change module is detachably mounted on a side of the lower mounting plate facing the upper quick-change module.

7. The circuit board fuse detection jig according to claim 6, characterized in that: The lower mounting plate is detachably provided with a plurality of second locking pins for detachably connecting the lower quick-change module.

8. The circuit board fuse detection jig according to claim 6, characterized in that: The lower mounting plate and the lower quick-change module are connected to each other via an elastic member.

9. The circuit board fuse detection jig according to claim 1, characterized in that: The sensing component is a board placement detection switch.

10. The circuit board fuse detection jig according to claim 1, characterized in that: The body is provided with a transfer strip connected to the controller, the upper test probe, and the lower test probe, and the test machine is connected to the transfer strip; The machine body is provided with a display screen, and the controller is connected to the display screen to display the information uploaded by the test machine.

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