Surface-mounted component testing tool

Abstract

The utility model belongs to the field of component testing, particularly relates to a surface-mounted component testing tool, and aims to solve the problems that the existing tool is low in testing efficiency, incapable of avoiding human interference and influence, low in testing result accuracy and incapable of thoroughly guaranteeing personal safety, and the following scheme is provided: the surface-mounted component testing tool comprises a tool base, a plurality of telescopic spring probes are arranged in the tool base, a printed circuit board is arranged at the position, located outside the telescopic spring probes, in the tool base, universal SMA connectors are symmetrically arranged on the two sides of the tool base, a positioning plate is arranged at the top of the tool base, and a clamping plate is arranged at the bottom of the tool base. A sliding pressing strip is arranged at the position, located outside the positioning plate, of the top of the tool base. According to the utility model, the tool pedestal, the printed circuit board, the general SMA connector, the telescopic spring probe, the conductive pad, the positioning plate and the sliding pressing strip are arranged, so that the testing efficiency and the testing accuracy of components can be improved, and the personal safety of testing personnel can be guaranteed at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of component testing, in particular to a testing tooling for surface-mounted components. Background Art

[0002] Testing is an essential link to verify the performance of components. During the testing process, the interfaces of different testing instruments and equipment can be basically unified, but the types of component pins are very different. Among them, SMD components are relatively special. SMD components are surface-mounted devices. SMD (Surface Mount Device) is a packaging form of electronic components. Different from traditional pin-type components (such as DIP), surface-mounted components do not need to be connected through pins, but are directly soldered on the circuit board. This packaging form is suitable for installation on printed circuit boards without vias and is a special component for surface mount technology (SMT).

[0003] SMD components cannot be directly measured using the test ports of testing equipment without damaging the surface mount pads. It is necessary to press the test probe onto the corresponding test pads for testing. Therefore, the time required to test SMD components is relatively long, resulting in low testing efficiency. At the same time, it is impossible to avoid the influence of human interference, resulting in low accuracy of test results. And for some high-voltage tests, personal safety cannot be completely guaranteed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages in the prior art, such as low testing efficiency, inability to avoid the influence of human interference, resulting in low accuracy of test results, and inability to completely guarantee personal safety, and to propose a testing tooling for surface-mounted components.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The testing tooling for surface-mounted components includes:

[0007] A tooling base, inside which there are a plurality of retractable spring probes. A printed circuit board is arranged outside the plurality of retractable spring probes inside the tooling base. Universal SMA connectors (SMA connector is a super-small version of radio frequency coaxial connector) are symmetrically arranged on both sides of the tooling base. A positioning plate is arranged on the top of the tooling base, and a sliding pressure strip is arranged outside the positioning plate on the top of the tooling base.

[0008] In a possible design, conductive pads are fixedly arranged at the tops of the plurality of retractable spring probes, and the plurality of retractable spring probes are respectively soldered on the printed circuit board.

[0009] In a possible design, a pick-and-place groove for facilitating the placement and removal of components is formed at the top of the positioning plate. A groove for avoiding the fasteners and solder joints of the printed circuit board is formed at the bottom of the positioning plate. Through holes for facilitating the positioning and guiding of the retractable spring probes are formed inside the pick-and-place groove and the groove at the top of the positioning plate.

[0010] In a possible design, sliding grooves are formed on both sides of the tooling base. Sliders are slidably arranged inside the two sliding grooves. The bottom of the sliding pressure strip is fixedly connected to the two sliders respectively.

[0011] In a possible design, limiting holes are symmetrically formed at one ends of the two sliding grooves. Two spring pieces are symmetrically and fixedly arranged on one side of each of the two sliders close to the tooling base. The two spring pieces are adapted to the limiting holes and can be detachably engaged.

[0012] In a possible design, two mounting holes for facilitating the installation of the general-purpose SMA connectors are symmetrically formed on both sides of the tooling base. The general-purpose SMA connectors are installed on the tooling base through the mounting holes by using fasteners.

[0013] In this application, when starting to use, first, according to the specifications of the components to be tested and the test requirements, confirm the type and configuration of the test tooling to be used. Subsequently, place the printed circuit board steadily on the mounting step at the predetermined position inside the tooling base and ensure its firm fixation. Then, fixedly install conductive gaskets at the tops of multiple retractable spring probes and weld the probes to the printed circuit board to ensure the welding quality. Use fasteners to install the general-purpose SMA connectors through the mounting holes on both sides of the tooling base to ensure tight connection without looseness. Then, perform differential equal-length wiring between the pads of the printed circuit board and the general-purpose SMA connectors to adapt to high-frequency testing. To ensure operability, cross-connect the pads at the large-area copper-clad positions. Both the upper and lower layers of the printed circuit board are provided with full copper cladding to ensure good grounding. Subsequently, place the positioning plate on the top of the tooling base, ensure that the pick-and-place groove faces upward, and appropriately avoid the solder joints and the fasteners for installing the printed circuit board with the groove, and ensure that the through holes correspond to the retractable spring probes. Then, install the sliding pressure strip in the sliding grooves of the tooling base through the sliders and adjust it to the initial position to ensure that the spring pieces and the limiting holes are in an engaged state. During the assembly process, select and combine the retractable spring probes and the positioning plate according to your own needs;

[0014] After the welding assembly is completed, connect the test interface of the test instrument to the tooling, and then it can be placed on the desktop for testing operations. During the testing operation, first accurately place the component to be tested in the pick-and-place slot of the positioning plate to ensure that the pins of the component are correctly docked with the retractable spring probes. Then, push the sliding bar, causing the spring plate on the slider to disengage from the engagement with the positioning hole. Then continue to push the sliding bar, causing the sliding bar to move towards the component and the pick-and-place slot. When it moves to the edge of the component, slightly press it with force and then move the slidable bar above the component and remove your finger, so that the sliding bar presses the component in the pick-and-place slot and contacts the conductive gasket at the top of the retractable spring probe. Then, according to the test plan, start the test equipment to start the test, observe the test data, ensure that there are no abnormalities during the test process, and record the key test data. If abnormal situations occur during the test (such as signal interruption, data abnormality, etc.), immediately stop the test, check the tooling and test equipment, and restart the test after troubleshooting. After the test is completed, turn off the test equipment, remove the sliding bar from the component, and then remove the component.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, through the design of the combination of the retractable spring probe and the conductive gasket, the stable contact between the test probe and the pins of the component is ensured, effectively reducing the test error caused by poor contact, and at the same time reducing the damage to the surface-mounted pads of the device under test.

[0017] In the utility model, through the setting of the sliding bar and the slider, the rapid positioning and stable pressing of the component are realized, simplifying the test operation process, improving the test efficiency, and enhancing the operability of the test operation.

[0018] In the utility model, through the setting of the tooling base, printed circuit board, general SMA connector, retractable spring probe, conductive gasket, positioning plate and sliding bar, it is possible to keep the test equipment connector disconnected, not replace the test cable, not damage the surface-mounted pads and ensure personal safety during the test process. Only the component needs to be taken and placed, which can improve the test efficiency and test accuracy, equivalently reduce the labor cost and improve the product quality.

[0019] The setting of the tooling base, printed circuit board, general SMA connector, retractable spring probe, conductive gasket, positioning plate and sliding bar of the utility model can improve the test efficiency and test accuracy of the component while ensuring the personal safety of the test personnel. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall and partial component enlarged structures of the test tooling for surface-mounted components proposed by the utility model;

[0021] Figure 2Schematic diagram of the overall exploded structure of the test tooling for surface-mounted components proposed by the present utility model;

[0022] Figure 3 Schematic diagram of the enlarged structure of some components of the tooling base and the sliding strip separator of the test tooling for surface-mounted components proposed by the present utility model;

[0023] Figure 4 Schematic diagram of the bottom structure of the printed circuit board of the test tooling for surface-mounted components proposed by the present utility model;

[0024] Figure 5 Schematic diagram of the bottom structure of the positioning plate of the test tooling for surface-mounted components proposed by the present utility model.

[0025] In the figure: 1. Tooling base; 101. Slide groove; 102. Limit hole; 2. Printed circuit board; 3. Universal SMA connector; 4. Retractable spring probe; 401. Conductive gasket; 5. Positioning plate; 501. Pick-and-place groove; 502. Groove; 503. Through hole; 6. Slide block; 601. Spring piece; 7. Sliding strip. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] Embodiment 1

[0028] Refer to Figures 1-5 , the test tooling includes:

[0029] Key components such as a tooling base 1, a printed circuit board 2, a plurality of retractable spring probes 4, a universal SMA connector 3, a positioning plate 5, a sliding strip 7, and a slide block 6.

[0030] The tooling base 1 serves as the support structure of the entire test tooling. The tooling base 1 is made of a durable material, such as metal or hard plastic. Inside it, there are installation steps for the printed circuit board 2 and threaded holes for installing the positioning plate 5, which are respectively used to install the printed circuit board 2 and the positioning plate 5. At the bottom, there are blind holes with a diameter of 2 mm, which are used to adapt to the installation of retractable spring probes 4 of different specifications to enhance its applicability. At the same time, mounting holes are symmetrically opened on both sides of the tooling base 1 for installing the universal SMA connector 3. In addition, slide grooves 101 are provided on both sides of the tooling base 1 for slidingly mounting the slide block 6 and the sliding strip 7. At one end of the slide groove 101, limit holes 102 are symmetrically opened, which are used to cooperate with the spring piece 601 on the slide block 6 to achieve the positioning and locking of the sliding strip 7 and prevent the accidental sliding of the sliding strip 7.

[0031] The printed circuit board 2 is stably placed on the installation step at a predetermined position inside the tooling base 1 and is ensured to be stable and non-shaking through appropriate fixing methods (such as screws, buckles, etc.). On the printed circuit board 2, according to the test requirements, a plurality of retractable spring probes 4 are soldered. These probes form electrical connections with the pins of the components to be tested through the conductive pads 401 at their tops.

[0032] A plurality of retractable spring probes 4 are carefully arranged inside the tooling base 1, and conductive pads 401 are fixedly arranged at their tops. These probes have good elasticity and conductivity, can automatically expand and contract when the components are placed to adapt to pins of different heights, and ensure stable electrical contact.

[0033] Universal SMA connectors 3 are symmetrically installed on both sides of the tooling base 1. These connectors are fixedly installed on the mounting holes of the tooling base 1 through fasteners (such as screws). The SMA connectors 3 serve as input and output interfaces for test signals and are convenient for connecting to external test instruments.

[0034] This application can be used in the technical field of component mounting test tooling and can also be used in other fields applicable to this application.

[0035] Embodiment 2

[0036] Based on Embodiment 1, Embodiment 2 further includes: a component mounting test tooling, which is applied to the technical field of component mounting test tooling. The positioning plate 5 is placed on the top of the tooling base 1. A pick-and-place groove 501 is opened at its top, which is convenient for the precise placement and picking of components. At the same time, a groove 502 is designed at the bottom of the positioning plate 5 to avoid the fasteners and solder joints on the printed circuit board 2 and prevent interference during the test. In addition, through holes 503 are opened at the top of the positioning plate 5. These through holes correspond to the positions of the retractable spring probes 4 and are used to guide the probes and ensure their accurate docking with the component pins.

[0037] The sliding bar 7 is installed in the sliding groove 101 of the tooling base 1 through two sliders 6. A spring piece 601 is fixed on one side of the slider 6. These spring pieces 601 are engaged with the limiting holes 102 in the initial state, thus locking the position of the sliding bar 7. During the test, by pushing the sliding bar 7, the spring pieces 601 on the slider 6 are disengaged from the engagement with the limiting holes 102, and then the sliding bar 7 can move along the sliding groove 101 towards the component direction until the component is pressed into the pick-and-place groove 501 and is in close contact with the conductive pad 401 at the top of the retractable spring probe 4.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the printed circuit board 2, the general SMA connector 3, the retractable spring probe 4, and the conductive gasket 401 are common knowledge, and they all belong to conventional means or well-known common sense. Therefore, they will not be elaborated here. Those skilled in the art can make arbitrary selections according to their needs or convenience.

[0039] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. The test fixture for surface-mounted components, characterized in that, Comprising: A tooling base (1), inside which there are a plurality of retractable spring probes (4). Inside the tooling base (1), outside the plurality of retractable spring probes (4), there is a printed circuit board (2). On both sides of the tooling base (1), there are symmetrically arranged general-purpose SMA connectors (3). On the top of the tooling base (1), there is a positioning plate (5). Outside the positioning plate (5) on the top of the tooling base (1), there is a sliding strip (7).

2. The test tooling for surface-mounted components according to claim 1, wherein At the top ends of the plurality of retractable spring probes (4), there are fixedly arranged conductive gaskets (401), and the plurality of retractable spring probes (4) are respectively welded to the printed circuit board (2).

3. The test tooling for mounted components according to claim 1, characterized in that, On the top of the positioning plate (5), there is a placement and removal groove (501) for facilitating the placement and removal of components. On the bottom of the positioning plate (5), there is a groove (502) for avoiding fasteners and solder joints of the printed circuit board (2). Inside the placement and removal groove (501) and the groove (502) on the top of the positioning plate (5), there are through holes (503) for facilitating the positioning and guiding of the retractable spring probes (4).

4. The test tooling for mounted components according to claim 1, wherein On both sides of the tooling base (1), there are sliding grooves (101). Inside the two sliding grooves (101), there are slidably arranged sliders (6). The bottom of the sliding strip (7) is fixedly connected to the two sliders (6) respectively.

5. The test tooling for surface-mounted components according to claim 4, characterized in that At one end of the two sliding grooves (101), there are symmetrically arranged limiting holes (102). On one side of the two sliders (6) close to the tooling base (1), there are symmetrically and fixedly arranged two spring pieces (601). The two spring pieces (601) are adapted to the limiting holes (102) and can be detachably engaged.

6. The test tooling for mounted components according to claim 1, wherein On both sides of the tooling base (1), there are symmetrically arranged two mounting holes for facilitating the installation of the general-purpose SMA connectors (3), and the general-purpose SMA connectors (3) are installed on the tooling base (1) through the mounting holes by fasteners.

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