Multifunctional detection clamp
The frame pressing control mechanism of the multi-functional testing fixture enables electrical connection to IoT cards of different specifications, solving the problem of poor compatibility of existing testing fixtures and reducing production costs and management difficulty.
Patent Information
- Application Number
- CN202423156529.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing testing fixtures can only test IoT cards of a single shape, resulting in poor compatibility. Multiple fixtures are required, which increases production costs and management difficulty.
Design a multifunctional testing fixture that uses a pressure frame control mechanism to press the product onto the test base, making the product's solder pads contact the contacts to achieve electrical connection. This avoids the need for shape-matching groove fixation and is compatible with various specifications of IoT cards.
It improves the compatibility of inspection fixtures, reduces the types and quantities of fixtures, lowers production costs, and facilitates management.
Smart Images
Figure CN223870691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing fixture technology, and specifically to a multifunctional testing fixture. Background Technology
[0002] With the development of IoT technology, the market demand for IoT cards is increasing. During the IoT card production process, electrical testing is required on the manufactured IoT cards; only products that pass the electrical test can be shipped. Existing testing fixtures use grooves that match the shape of the product and contain contacts within these grooves for electrical connection with the IoT card's pads, thus establishing the electrical connection between the product and the testing equipment. However, this type of testing fixture can only test products of a single shape, has poor compatibility, and requires multiple testing fixtures for different specifications of IoT cards, increasing the variety and quantity of testing fixtures, raising production costs, and making management difficult. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional testing fixture that is compatible with various specifications of IoT cards, reduces the number of testing fixtures, facilitates management, and reduces production costs.
[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: A multifunctional testing fixture, comprising: a base; a test box disposed on the base, wherein a wiring port is provided on the surface of the test box, and a data acquisition circuit is disposed inside the test box, the data acquisition circuit being electrically connected to the wiring port; a test base disposed inside the test box, wherein a contact point for electrically connecting to the solder pads of the product to be tested is provided on the upper surface of the test base, and a through hole matching the test base is provided on the upper surface of the test box, the upper surface of the test base being exposed outside the test box through the through hole, the contact point being electrically connected to the data acquisition circuit; a pressure frame movably disposed on the test base, which can approach or move away from the upper surface of the test base in the vertical direction, for pressing the product to be tested onto the upper surface of the test base, so that the solder pads of the product to be tested contact the contact point; and a pressure frame control mechanism disposed inside the test box and connected to the pressure frame, for controlling the action of the pressure frame.
[0005] Compared to existing technologies, the advantages of this invention are as follows: The pressure frame control mechanism can press the product onto the test socket, causing the product's solder pads to contact the contacts on the test socket, electrically connecting the product to the testing equipment and enabling product testing. This testing fixture uses a pressure frame to fix the product, thus avoiding the need for a groove matching the product's shape. This prevents the tested product's specifications and shape from being limited by the shape of the test groove, improving the fixture's compatibility. A single testing fixture can test various IoT cards of different specifications. Using this multi-functional testing fixture reduces the types and number of fixtures, thereby lowering production costs and facilitating fixture management.
[0006] The aforementioned multifunctional testing fixture also includes a circuit box on the base, a converter circuit inside the circuit box, and the circuit box is located on one side of the test box. The acquisition circuit is electrically connected to the converter circuit through the wiring port.
[0007] The aforementioned multifunctional testing fixture also includes a card reader on its base, which is mounted on the circuit box.
[0008] The aforementioned multifunctional testing fixture has four pressure blocks detachably mounted on the upper surface of the circuit box, and the four corners of the card reader are pressed against the upper surface of the circuit box by the four pressure blocks respectively.
[0009] The aforementioned multifunctional testing fixture has through holes on both the upper and side surfaces of the circuit box.
[0010] The aforementioned multifunctional testing fixture includes a frame pressing control mechanism comprising a frame pressing bracket, a sliding seat, a guide post, an elastic element, a cam, a rotating shaft, and a handle. The rotating shaft is rotatably mounted on the test base, the cam is mounted on the rotating shaft, and the handle is located at one end of the rotating shaft. The guide post is erected inside the test box, and the sliding seat is slidably mounted on the guide post. An elastic element is provided between the sliding seat and the base, and the elastic element applies upward pressure to the sliding seat to keep the upper surface of the sliding seat in contact with the circumferential surface of the cam. The frame pressing bracket is mounted on the upper surface of the sliding seat, and both ends of the frame pressing bracket are connected to the upper end of the frame pressing bracket.
[0011] In the aforementioned multifunctional testing fixture, a pair of spring pressure plates are symmetrically arranged on the pressure frame. The outer end of the spring pressure plate is connected to the lower surface of the pressure frame, the inner end of the spring pressure plate extends into the interior of the pressure frame by a certain length, and the inner end of the spring pressure plate is bent downwards by a certain length.
[0012] The aforementioned multifunctional testing fixture has an illuminated button on the surface of the test box, which is electrically connected to the acquisition circuit.
[0013] The aforementioned multi-functional testing fixture has an RJ45 interface for its wiring port.
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0015] Figure 1 This is a top view of the multifunctional testing fixture according to an embodiment of the present utility model;
[0016] Figure 2 This is a three-dimensional structural diagram of the multifunctional testing fixture according to an embodiment of the present utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the frame pressing control mechanism according to an embodiment of the present utility model;
[0018] Figure 4 This is a side view of the frame pressing control mechanism according to an embodiment of the present utility model;
[0019] Figure 5 This is a top view of the pressure frame according to an embodiment of the present utility model.
[0020] Explanation of icon numbers:
[0021] 100 Base, 200 Test Box, 210 Base Plate, 220 Wiring Port, 230 Illuminated Button, 300 Test Holder, 310 Test Support, 400 Pressure Frame, 401 Spring Pressure Plate, 410 Pressure Frame Control Mechanism, 411 Pressure Frame Bracket, 412 Handle, 413 Rotating Shaft, 414 Cam, 415 Guide Post, 416 Sliding Seat, 500 Circuit Box, 510 Pressure Block, 600 Card Reader. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below, with reference to Figures 1 to 4This utility model provides a multifunctional testing fixture, including a base 100 and a test box 200 disposed on the base 100. A wiring port 220 is provided on the surface of the test box 200. An acquisition circuit (not shown) and a test socket 300 are disposed inside the test box 200, and the acquisition circuit is electrically connected to the wiring port 220. The upper surface of the test socket 300 is provided with contacts (not shown) for electrical connection with the pads of the product to be tested. The upper surface of the test box 200 is provided with through holes that match the test socket 300. The upper surface of the test socket 300 extends out of the test box 200 through the through holes in the test socket 300, and the contacts are electrically connected to the acquisition circuit. A pressure frame 400 is movably mounted above the test socket 300. The pressure frame 400 is connected to the pressure frame control mechanism 410. Under the control of the pressure frame control mechanism 410, the pressure frame 400 can move closer to or further away from the upper surface of the test socket 300 in the vertical direction. The pressure frame control mechanism 410 can control the pressure frame 400 to press down onto the upper surface of the test socket 300, thereby pressing the product between the pressure frame 400 and the test socket 300 onto the test socket 300. This ensures that the pads and contacts of the IoT card to be tested make good contact, so that the IoT card to be tested can be connected to the acquisition circuit through the pads and contacts, and electrically connected to the test circuit or test equipment through the wires connected to the connection port 220.
[0023] This multi-functional testing fixture uses a pressing frame control mechanism 410 to control the pressing frame 400 to press the solder pads of the product under test onto the contacts on the surface of the test holder 300, thus achieving electrical connection between the IoT card under test and the testing equipment. Compared to fixing the product by setting a fixing groove that matches the product shape, this avoids the limitation of the product's specifications and shape by the shape of the groove, thereby improving the compatibility of the testing fixture. A single testing fixture can be used to test different specifications of IoT cards, such as standard SIM cards, MicroSIM cards, or NanoSIM cards. Using this multi-functional testing fixture can reduce the types and number of fixtures, thereby reducing production costs and the difficulty of fixture management. By integrating the acquisition circuit and the connection port 220 into the test box 200, this multi-functional testing fixture can protect the acquisition circuit and the connection port 220, preventing the connection port 220 from loosening due to frequent use and causing poor contact problems.
[0024] Reference Figure 1 and Figure 2 In this embodiment, the base 100 is also provided with a circuit box 500 for accommodating and protecting the adapter circuit (not shown in the figure). The circuit box 500 is located on one side of the test box 200. The acquisition circuit is electrically connected to the adapter circuit through the wire connected to the connection port 220. The adapter circuit is used to convert the acquired electrical signal and transmit it to the computer so that the test software on the computer can obtain the test results.
[0025] Since most current IoT cards are dual-interface cards compatible with both contact and contactless communication methods, a card reader 600 is also provided on the base 100 to facilitate testing of the contactless read / write performance of dual-interface IoT cards. (Refer to...) Figure 1 and Figure 2 In this embodiment, the card reader 600 is mounted on the circuit box 500. The four corners of the card reader 600 are pressed against the upper surface of the circuit box 500 by four detachable clamping blocks 510. Each clamping block 510 is an L-shaped block whose shape matches the corners of the card reader 600. A flange is provided on the inner side of the upper end of each clamping block 510. The clamping blocks 510 are detachably mounted on the four corners of the circuit box 500 by bolts. The inner flanges press against the edges of the card reader 600, thus fixing the card reader 600. The card reader 600 can be disassembled and reassembled by removing the four clamping blocks 510, allowing for maintenance and replacement of the card reader 600. (Refer to...) Figure 2 In this embodiment, in order to facilitate the entry and exit of the wires of the card reader 600 and the adapter circuit into and out of the circuit box 500, several through holes are provided on the upper surface and side surface of the circuit box 500.
[0026] It is understandable that the frame pressing control mechanism 410 can be a lifting mechanism driven by a lead screw, lever, cam 414, or cylinder. (Refer to...) Figure 3 and Figure 4In this embodiment, the test holder 300 includes a test pad and a test support 310. The test pad is fixedly mounted on the base plate 210 of the test box 200 via the test support 310. The contact point is located on the upper surface of the test pad. The base plate 210 of the test box 200 is fixed to the base 100 via a positioning pin. The frame pressing control mechanism 410 includes a frame pressing bracket 411, a sliding seat 416, a guide post 415, an elastic element, a cam 414, a rotating shaft 413, and a handle 412. The rotating shaft 413 is rotatably mounted on the test support 310. A groove is provided on the lower surface of the test support 310 through which the sliding seat 416 can pass. Two guide posts 415 are erected parallel to each other on the base plate 210 of the test box 200. The sliding seat 416 is provided with a light hole matching the diameter of the guide post 415. The light hole of the sliding seat 416 is fitted onto the guide post 415, realizing the sliding connection between the sliding seat 416 and the guide post 415. The sliding seat 416 is U-shaped. A cam 414 is mounted on the rotating shaft 413 and located within the groove of the sliding seat 416. An elastic element is provided between the sliding seat 416 and the base plate 210. This elastic element applies an upward thrust to the lower surface of the sliding seat 416, ensuring that the groove wall of the sliding seat 416 always abuts against the circumferential surface of the cam 414. At least one end of the rotating shaft 413 extends a certain length beyond the test box 200, and a handle 412 is connected to one end of the rotating shaft 413. Both ends of the pressure frame 400 are connected to the upper end of the pressure frame bracket 411, and the lower surface of the pressure frame bracket 411 is positioned on the upper surface of the sliding seat 416. When it is necessary to control the pressing frame 400 to press down, rotate the handle 412 so that the most convex part of the cam 414 faces downward. The cam 414 presses down the sliding seat 416, thereby driving the pressing frame 400 connected to the sliding seat 416 to press down and press the product onto the test pad. When the product needs to be released after the test, rotate the handle 412 so that the most convex part of the cam 414 deviates from the vertical downward direction by a certain angle. The sliding seat 416 is raised to a certain height under the action of the elastic element, so that the pressing frame 400 separates from the test pad. The tester can then remove the IoT card from the fixture.
[0027] In this embodiment, refer to Figure 3 The base is equipped with two sets of test seats 300 and pressure frames 400 to simultaneously test two IoT cards. Correspondingly, a rotating shaft 413 has two cams 414, and both ends of the shaft 413 extend a certain distance beyond the test box 200. Two handles 412 are respectively provided at each end of the shaft 413. Two test pads are provided on the test support 310, with the upper surface of the test pads preferably slightly higher than the upper surface of the test box 200. The two pressure frames 400 are respectively mounted on two sliding seats 416 via two sets of pressure frame brackets 411.
[0028] Reference Figure 5In this embodiment, the pressure frame 400 is a rectangular frame. A pair of spring pressure plates 401 are symmetrically arranged on the lower surface of the pressure frame 400. The outer end of the spring pressure plate 401 is connected to the lower surface of the pressure frame 400, and the inner end extends into the pressure frame 400 by a certain length and bends downward by a certain length. When the pressure frame 400 is pressed down, the inner end of the spring pressure plate 401 contacts the upper surface of the product. Since the inner end of the spring pressure plate 401 is bent downward by a certain length, the spring pressure plate 401 will deform under the pressure of the pressure frame 400. This can both form a buffer between the pressure frame 400 and the product and ensure that the solder pads of the product can tightly abut against the contacts on the test pad by applying elastic force to the product, thereby ensuring the reliability of the electrical connection between the product and the acquisition circuit.
[0029] Reference Figure 1 In this embodiment, an illuminated button 230 is provided on the surface of the test box 200. The illuminated button 230 is electrically connected to the data acquisition circuit and is used to start the test. The indicator light on the illuminated button 230 indicates whether the product is connected to the test equipment. If the indicator light illuminates after the button is pressed, the test equipment can be operated to read the test data and results. In this embodiment, to improve the service life of the connector 220, the connector 220 adopts a more durable RJ45 interface. The data acquisition circuit is electrically connected to the adapter circuit through a gigabit network cable to improve the transmission speed and anti-interference capability of the test data.
[0030] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.
[0031] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A multifunctional testing fixture, characterized in that, include: Base (100); A test box (200) is disposed on the base (100). A wiring port (220) is provided on the surface of the test box (200). A data acquisition circuit is disposed inside the test box (200). The data acquisition circuit is electrically connected to the wiring port (220). A test socket (300) is disposed inside the test box (200). The upper surface of the test socket (300) is provided with contacts for electrical connection with the pads of the product to be tested. The upper surface of the test box (200) is provided with through holes that match the test socket (300). The upper surface of the test socket (300) extends out of the test box (200) through the through holes. The contacts are electrically connected to the acquisition circuit. The pressure frame (400) is movably disposed on the test base (300) and can approach or move away from the upper surface of the test base (300) in the vertical direction. It is used to press the product to be tested onto the upper surface of the test base (300) so that the pads of the product to be tested contact the contacts. A frame pressing control mechanism (410) is disposed inside the test box (200) and connected to the frame pressing (400) for controlling the action of the frame pressing (400).
2. The multifunctional testing fixture according to claim 1, characterized in that, The base (100) is also provided with a circuit box (500), and the circuit box (500) is provided with a converter circuit. The circuit box (500) is located on one side of the test box (200), and the acquisition circuit is electrically connected to the converter circuit through the wiring port (220).
3. The multifunctional testing fixture according to claim 2, characterized in that, A card reader (600) is also provided on the base (100), and the card reader (600) is disposed on the circuit box (500).
4. The multifunctional testing fixture according to claim 3, characterized in that, Four pressure blocks (510) are detachably provided on the upper surface of the circuit box (500), and the four corners of the card reader (600) are pressed against the upper surface of the circuit box (500) by the four pressure blocks (510).
5. The multifunctional testing fixture according to claim 3, characterized in that, The circuit box (500) has through holes on its upper surface and side surface.
6. The multifunctional testing fixture according to claim 1, characterized in that, The frame pressing control mechanism (410) includes a frame pressing bracket (411), a sliding seat (416), a guide post (415), an elastic element, a cam (414), a rotating shaft (413), and a handle (412). The rotating shaft (413) is rotatably mounted on the test seat (300), the cam (414) is mounted on the rotating shaft (413), the handle (412) is located at one end of the rotating shaft (413), and the guide post (415) is erected inside the test box (200). The sliding seat (416) is slidably disposed on the guide post (415). An elastic element is disposed between the sliding seat (416) and the base (100). The elastic element is used to apply upward pressure to the sliding seat (416) so that the upper surface of the sliding seat (416) is in contact with the circumferential surface of the cam (414). The pressure frame bracket (411) is disposed on the upper surface of the sliding seat (416). The two ends of the pressure frame (400) are connected to the upper end of the pressure frame bracket (411).
7. The multifunctional testing fixture according to claim 1, characterized in that, A pair of spring pressure plates (401) are symmetrically arranged on the pressure frame (400). The outer end of the spring pressure plate (401) is connected to the lower surface of the pressure frame (400). The inner end of the spring pressure plate (401) extends into the interior of the pressure frame (400) by a certain length. The inner end of the spring pressure plate (401) is bent downward by a certain length.
8. The multifunctional testing fixture according to claim 1, characterized in that, The test box (200) has an illuminated button (230) on its surface, and the illuminated button (230) is electrically connected to the acquisition circuit.
9. The multifunctional testing fixture according to claim 1, characterized in that, The connection port (220) is an RJ45 interface.