Test fixture and test tool

Abstract

The utility model provides a test fixture and a test tool, and the test fixture comprises a pressing device and a fixing device. The pressing device comprises a seat body, a lifting assembly movably connected to the seat body and a pressing assembly connected to the lifting assembly, and the lifting assembly is used for driving the pressing assembly to do linear reciprocating motion in the vertical direction; the fixing device comprises a shell, a plurality of interfaces arranged on the shell and an assembly part, and the assembly part is provided with a plurality of detection ends electrically connected to the interfaces; the fixing device is placed on the base body, and in the vertical direction, the projection of the assembling part and the projection of the pressing assembly are at least partially overlapped. According to the test fixture provided by the utility model, the disassembly and assembly time of the module to be tested is greatly shortened, the test efficiency is improved, the damage risk of the module to be tested is reduced, and the service life of the module to be tested is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test tool technical field, especially, relate to a test fixture and test tool. BACKGROUND

[0002] In the electrical performance test of electronic devices, it is usually necessary to electrically connect electronic devices and test instruments through test fixtures. The common method is to manually use test fixtures to clamp the connection ports or pins of electronic devices to achieve electrical connection between test instruments and electronic devices. However, manual operation of electrically connecting electronic devices using test fixtures is time-consuming and has low reliability, especially in wireless communication, radar systems and other electronic devices (such as filters) that need to filter and screen specific frequencies. Traditional test fixtures are prone to damage the connection ports of electronic devices. SUMMARY

[0003] The technical purpose of the utility model is to provide a test fixture and test tool, aiming at solving the problems of low reliability of traditional electrical performance test tool and low efficiency of manual test.

[0004] To solve the above technical problems, the utility model is realized in this way, a test fixture, including pressing device and fixing device,

[0005] The pressing device includes a seat body, a lifting assembly movably connected to the seat body, and a pressing assembly connected to the lifting assembly. The lifting assembly is used to drive the pressing assembly to move linearly and reciprocally along the vertical direction.

[0006] The fixing device includes a housing, a plurality of interfaces provided on the housing, and an assembly part. The assembly part is provided with a plurality of detection ends electrically connected to each of the interfaces. The fixing device is placed on the seat body, and in the vertical direction, the projection of the assembly part at least partially overlaps the projection of the pressing assembly.

[0007] Further, the assembly part includes a plurality of assembly grooves, and the pressing assembly includes a pressing part. In the vertical direction, the projection of the plurality of assembly grooves at least partially overlaps the projection of the pressing part.

[0008] Further, the pressing part includes a plurality of pressing heads corresponding to the plurality of assembly grooves. In the vertical direction, the projection of each pressing head at least partially overlaps the projection of the corresponding assembly groove.

[0009] Further, a clamping groove is formed on the stage of the seat body, and the fixing device is clamped in the clamping groove.

[0010] Further, a plurality of interfaces are provided on the periphery of the housing, and the groove wall of the clamping groove is provided with a clearance position matched with the plurality of interfaces. Further, a plurality of interfaces are provided on the periphery of the housing, and the groove wall of the clamping groove is provided with a clearance position matched with the plurality of interfaces.

[0011] Further, the lifting assembly comprises a guide rail connected to the seat body, and the pressing assembly is slidingly connected to the guide rail in the vertical direction.

[0012] Further, the pressing assembly comprises a sliding part and a pressing part, the sliding part is slidingly connected to the guide rail in the vertical direction, and the pressing part extends from the sliding part towards the fixing device.

[0013] Further, the lifting assembly further comprises a pressing rod, a first connecting rod and a second connecting rod.

[0014] The head of the pressing rod is at an angle with the length extension direction of the handle, and the two ends of the head of the pressing rod in the length extension direction are respectively rotatably connected to the seat body and the first end of the first connecting rod, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod is fixedly connected to the pressing assembly.

[0015] Further, the seat body is provided with a guide assembly penetrating through both ends in the vertical direction, and the guide assembly is sleeved on the second connecting rod to enable the second connecting rod to move linearly in the vertical direction.

[0016] Further, in the vertical direction, the projection of the first connecting rod at least partially covers the projection of the through hole of the guide assembly penetrating through both ends in the vertical direction.

[0017] Further, the shell is made of metal.

[0018] The utility model also provides a test tool, including control device and test fixture as described above.

[0019] The test fixture comprises a fixing device having a plurality of interfaces, and the control device is electrically connected to one or more of the interfaces.

[0020] Compared with the prior art, the test fixture and the test tool have the following beneficial effects:

[0021] The assembly part in the test fixture is used for fixing the to-be-tested module, the pressing assembly is driven by the lifting assembly to move downward in the vertical direction, the to-be-tested module is pressed by the pressing assembly, the connecting terminal of the to-be-tested module is in close contact with the detection terminal on the assembly part, the traditional fixing mode through screwing and welding is replaced by the pressing mode, the disassembly and assembly time of the to-be-tested module is greatly shortened, the test efficiency is improved, the damage risk of the to-be-tested module is reduced, and the service life of the to-be-tested module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1is a structural schematic view of the first visual angle of the control device in the embodiment of the utility model;

[0023] Figure 2 is a structural schematic view of the second visual angle of the control device in the embodiment of the utility model;

[0024] Figure 3 is a partial structural schematic view of the first visual angle when the fixing device is placed in the pressing device in the embodiment of the utility model;

[0025] Figure 4 is a partial structural schematic view of the second visual angle when the fixing device is placed in the pressing device in the embodiment of the utility model;

[0026] Figure 5 is a partial structural schematic view of the third visual angle when the fixing device is placed in the pressing device in the embodiment of the utility model;

[0027] Figure 6 is a structural schematic view of the fixing device in the embodiment of the utility model;

[0028] Figure 7 is a structural schematic view of the fixing device loading the module to be tested in the embodiment of the utility model.

[0029] In the drawings, various reference signs represent:

[0030] 01, test fixture; 02, module to be tested; 021, connecting terminal;

[0031] 10, pressing device; 11, seat body; 111, object table; 112, clamping groove; 113, guide assembly; 12, lifting assembly; 121, guide rail; 122, pressing rod; 123, first connecting rod; 124, second connecting rod; 13, pressing assembly; 131, pressing head; 132, sliding part;

[0032] 20, fixing device; 21, shell; 22, assembly part; 221, assembly groove; 222, PCB; 23, radio frequency input interface; 24, radio frequency output interface; 25, voltage input interface;

[0033] 30, control device; 31, first port; 32, second port; 33, first key group; 34, second key group; 35, display module. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0037] Embodiment:

[0038] Please refer to Figures 1 to 7 , a test tool is provided in the embodiment, which comprises a control device 30 and a test fixture 01;

[0039] The test fixture 01 comprises a fixing device 20, the fixing device 20 has a plurality of interfaces, and the control device 30 is electrically connected to one or more of the interfaces.

[0040] It should be understood that the test tool provided in the embodiment is used in wireless communication, radar system and other electronic devices (filters) that need to filter and screen specific frequencies, for example, the to-be-tested module 02 in the embodiment is a frequency hopping filter.

[0041] As shown in Figure 1 and 2 , in the embodiment, the control device 30 comprises a first port 31, a second port 32, a first key group 33, a second key group 34 and a display module 35;

[0042] As shown in Figure 1 The first port 31 is connected to a corresponding interface on the fixing device 20 by a cable, in this embodiment, the first port 31 is a J30J low-frequency interface, and the corresponding interface on the fixing device 20 is also a J30J low-frequency interface, and the first port 31 provides working voltage for the to-be-tested module 02 on the fixing device 20 through the cable.

[0043] The second port 32 is used for cable connection to a computer device. In this embodiment, the second port 32 is a serial communication interface, and the second port 32 has a serial port connection function and can be connected to a computer device to receive control signals of test software of the computer device. The first port 31 and the second port 32 are preferably arranged on the side of the control device 30.

[0044] The display screen is used for real-time display of test results of the to-be-tested module 02; the first button group 33 is used for selecting data read by the display screen, and the button and the display screen are preferably arranged on the upper surface of the control device 30.

[0045] As shown in Figure 2 The second button group 34 includes multiple gear switches, and the second button group 34 is preferably arranged on the side of the control device 30. In this embodiment, the control device 30 can provide multiple power supply voltages for the fixing device 20 of the test fixture 01, and preferably, 12V DC, 5.5V DC and 130V DC working voltages can be selected by adjusting the gear switches to input into the fixing device 20. In addition, the control device 30 can also automatically switch the center frequency to be tested, thereby replacing manual switching and greatly improving test efficiency.

[0046] The control device 30 includes two control modes, i.e., remote control and local control. When the control device 30 is not connected to a computer device through the second port 32, local control is realized, and test data is selected and read by the first button group 33 and the display screen of the control device 30; when the control device 30 is connected to a computer device through the second port 32, test data can be automatically recorded by test software of the computer device, and automatic test is realized.

[0047] Please refer to Figures 3 to 7 In this embodiment, the test fixture 01 includes the pressing device 10 and the fixing device 20.

[0048] The pressing device 10 includes a seat body 11, a lifting assembly 12 movably connected to the seat body 11, and a pressing assembly 13 connected to the lifting assembly 12, and the lifting assembly 12 is used for driving the pressing assembly 13 to move linearly and reciprocally along the vertical direction.

[0049] The fixing device 20 comprises a shell 21, a plurality of interfaces arranged on the shell 21, and an assembly part 22 provided with a plurality of detection terminals electrically connected to the interfaces; the fixing device 20 is placed on the seat body 11, and the assembly part 22 at least partially overlaps the projection of the pressing assembly 13 in the vertical direction.

[0050] In the embodiment, the assembly part 22 is used for fixing the to-be-tested module 02; the pressing assembly 13 is driven by the lifting assembly 12 to move downward in the vertical direction, so that the to-be-tested module 02 is pressed by the pressing assembly 13, and the connection terminals 021 of the to-be-tested module 02 are in close contact with the detection terminals on the assembly part 22; the plurality of interfaces are used for connecting a control module and a test instrument; after the control module is powered on through the interfaces, the detection terminals are electrically connected to the to-be-tested module 02, and the to-be-tested module 02 is subjected to power-on detection.

[0051] In the embodiment, the to-be-tested module 02 is electrically connected by pressing, instead of the traditional clamping and fixing mode of the test fixture; in particular, in the electrical test of electronic devices in the field of wireless communication such as filters, the embodiment replaces the traditional fixing mode of screwing and welding, greatly shortens the disassembly and assembly time of the to-be-tested module 02, improves the test efficiency, reduces the damage risk of the to-be-tested module 02, and prolongs the service life of the to-be-tested module 02.

[0052] Further, as shown in Figure 3 and 6 , the assembly part 22 comprises a plurality of assembly grooves 221, and the pressing assembly 13 comprises a pressing part; in the vertical direction, the projection of the plurality of assembly grooves 221 at least partially overlaps the projection of the pressing part.

[0053] Preferably, as shown in Figure 6 , in the embodiment, the shell 21 is in the form of a groove, the outer circumferential side of the shell 21 is provided with a plurality of interfaces, the assembly part 22 is formed by the inner wall of the groove of the shell 21, and the groove bottom of the groove-shaped shell 21 is provided with a plurality of assembly grooves 221.

[0054] As shown in Figure 6 , the fixing device 20 further comprises a PCB board 222, which is fixed to the assembly part 22; specifically, the PCB board 222 is arranged at the groove bottom of the groove-shaped shell 21. A plurality of openings are formed in the PCB board 222; in the vertical direction, the projection of the openings of the PCB board 222 covers the projection of the assembly grooves 221, and the peripheral edge of the openings of the PCB board 222 is provided with a plurality of detection terminals.

[0055] As shown in Figure 3As shown, before testing, the user puts the to-be-tested module 02 into the assembly slot 221 through the opening of the PCB board 222 on the fixing device 20, and then places the fixing device 20 on the object table 111 of the seat body 11 of the compression device 10. The lifting device of the compression device 10 is controlled to drive the compression part of the compression device 10 to move vertically downward. The to-be-tested module 02 is subjected to the downward pressure provided by the compression part, so that the connecting terminal 021 of the to-be-tested module 02 is in close contact with the plurality of detection terminals around the periphery of the PCB board 222, which ensures that the to-be-tested module 02 is in good contact with the detection terminals on the fixing device 20, and further ensures the reliability of the test result.

[0056] In other embodiments, the shell 21 can also be in the shape of a cuboid, a cylinder or other shapes, and is not limited to being in the shape of a groove. The assembly slot 221 can be through at both ends in the vertical direction, or can be open in the vertical upward / downward direction. The detection terminals are not limited to being arranged on the PCB board 222. The detection points on the circuit carried by the PCB board 222 can be led out to the assembly slot 221 through a lead wire, a conductive pad or the like. If the assembly slot 221 is a groove with a certain depth, the detection terminals can be arranged on the periphery of the groove bottom, the groove wall or the groove opening. In order to avoid damage to the connecting terminal 021 of the to-be-tested module, preferably, the detection terminals are opposite to the pressure head 131 of the compression device 10, that is, the detection terminals are preferably arranged on the periphery of the groove bottom or the groove opening of the assembly slot 221.

[0057] It should be understood that the compression part can include one or more pressure heads 131. When the compression part includes one pressure head 131, the projection of the pressure head 131 on the vertical direction at least partially overlaps with each assembly slot 221. By moving one pressure head 131 downward, the plurality of to-be-tested modules 02 can be compressed into the assembly slots 221.

[0058] Preferably, as shown in Figure 3 The compression part includes a plurality of pressure heads 131 corresponding to the plurality of assembly slots 221. In the vertical direction, the projection of each pressure head 131 at least partially overlaps with the corresponding assembly slot 221.

[0059] Compared with using only one pressure head 131 to compress a plurality of assembly slots 221, using a plurality of pressure heads 131 corresponding to a plurality of assembly slots 221 can apply more uniform pressure to the to-be-tested module 02, further improving the reliability of the test tool.

[0060] Further, as shown in Figure 3 and 4 The object table 111 of the seat body 11 is provided with a clamping groove 112, and the fixing device 20 is clamped in the clamping groove 112. A plurality of interfaces are arranged on the periphery of the shell 21, and the groove wall of the clamping groove 112 is provided with a plurality of avoiding positions matched with the plurality of interfaces.

[0061] In the embodiment, the plurality of interfaces are respectively a radio frequency input interface 23, a radio frequency output interface 24, and a voltage input interface 25. Preferably, the radio frequency input interface 23 and the radio frequency output interface 24 are radio frequency SMA plugs fixed by screwing and welding. In use, the radio frequency input interface 23 and the radio frequency output interface 24 are respectively connected to the input port and the output port of the vector network analyzer through radio frequency cables to provide radio frequency signals for the frequency hopping filter of the to-be-tested module 02, which is convenient, fast, stable and reliable; the voltage input interface 25 is a J30J low-frequency interface.

[0062] Preferably, as shown in Figures 3 to 5 The lifting assembly 12 includes a guide rail 121 connected to the seat body 11, and the pressing assembly 13 is slidingly connected to the guide rail 121 in the vertical direction.

[0063] The guide rail 121 provides stable support to ensure smooth linear movement of the pressing assembly 13 in the vertical direction, reduces shaking and instability, and improves the reliability of the test fixture 01. Preferably, the guide rail 121 can be a lead screw that can provide precise lifting movement for the pressing assembly 13.

[0064] Further, as shown in Figures 3 to 5 The pressing assembly 13 includes a sliding part 132 and a pressing part, the sliding part 132 is slidingly connected to the guide rail 121 in the vertical direction, and the pressing part extends from the sliding part 132 towards the fixing device 20.

[0065] Preferably, as shown in Figure 3 The sliding part 132 is a T-shaped flat plate with a certain thickness, and the plane thereof is perpendicular to the length extension direction of the guide rail 121. The pressing part includes a plurality of pressing heads 131, and the top ends of the pressing heads 131 are fixed to the bottom of the T-shaped flat plate.

[0066] In some embodiments, the lifting assembly 12 can drive the pressing assembly 13 to move linearly and reciprocally in the vertical direction by hydraulic drive, motor drive or manual drive.

[0067] As an example, the lifting assembly 12 in the embodiment drives the pressing assembly 13 to move manually.

[0068] As shown in Figures 3 to 5 The lifting assembly 12 further includes a pressing rod 122, a first connecting rod 123 and a second connecting rod 124;

[0069] The head of the pressing rod 122 is at an angle to the length extension direction of the handle, the head of the pressing rod 122 is rotatably connected to the seat body 11 and the first end of the first connecting rod 123 at both ends of the length extension direction, the second end of the first connecting rod 123 is rotatably connected to the first end of the second connecting rod 124, and the second end of the second connecting rod 124 is fixedly connected to the pressing assembly 13.

[0070] When the user presses down on the handle of the pressure rod 122, within a certain range, the first end of the first connecting rod 123 rotates around the fixed point of the seat body 11, and the first end of the first connecting rod 123 descends, driving the second connecting rod 124 and the pressing assembly 13 to descend.

[0071] Furthermore, such as Figures 3 to 5 As shown, the base 11 is provided with a guide component 113 that extends through both ends in the vertical direction. The guide component 113 is sleeved on the second link 124 so that the second link 124 can move linearly in the vertical direction.

[0072] The guide assembly 113 can further enable the second link 124 to move linearly smoothly, making the lifting and lowering of the pressing assembly 13 more stable and improving the stability and reliability of the pressing device 10.

[0073] Furthermore, such as Figure 4 As shown, in the vertical direction, the projection of the first link 123 at least partially covers the projection of the through hole of the guide assembly 113 that extends through both ends in the vertical direction.

[0074] With this configuration, the first link 123 will be locked on the upper surface of the guide assembly 113 when it descends to a certain height. The guide assembly 113 prevents the first link 123 from continuing to move downward, thus limiting the travel of the lifting assembly 12. This avoids the pressing component of the pressing device 10 from over-pressing the component under test, improving the reliability of the pressing device 10. At the same time, it can prevent damage to the lifting assembly 12 of the pressing device 10, thus improving the overall lifespan of the test fixture 01.

[0075] Preferably, in this embodiment, such as Figures 3 to 5 As shown, the first link 123 is formed by two elbow clamps fixedly connected to each other. The elbow of the elbow clamp can abut against the upper surface of the guide assembly 113, thereby limiting the travel of the lifting assembly 12.

[0076] Furthermore, the housing 21 is made of metal. This facilitates grounding of the outer casing of the module under test 02, reduces the negative impact of poor grounding of the outer casing of the module under test 02, and further improves the reliability of the test fixture 01.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test fixture, comprising: The pressing device and the fixing device are included. The pressing device includes a seat body, a lifting assembly movably connected to the seat body, and a pressing assembly connected to the lifting assembly, the lifting assembly being configured to drive the pressing assembly to linearly reciprocate along a vertical direction. The fixing device includes a housing, a plurality of interfaces arranged on the housing, and an assembly part, the assembly part being provided with a plurality of detection terminals electrically connected to the interfaces, the fixing device being placed on the seat body, and the assembly part and the projection of the pressing assembly at least partially overlapping in the vertical direction.

2. The test fixture of claim 1, wherein, The assembly part includes a plurality of assembly grooves, and the pressing assembly includes a pressing part, the projections of the assembly grooves and the projection of the pressing part at least partially overlapping in the vertical direction.

3. The test fixture of claim 2, wherein, The pressing part includes a plurality of pressing heads corresponding to the assembly grooves, and the projections of the pressing heads and the corresponding assembly grooves at least partially overlap in the vertical direction.

4. The test fixture of claim 1, wherein, A clamping groove is arranged on a stage of the seat body, and the fixing device is clamped in the clamping groove. The interfaces are arranged on the periphery of the housing, and the groove wall of the clamping groove is provided with a clearance position matched with the interfaces.

5. The test fixture of claim 1, wherein, The lifting assembly includes a guide rail connected to the seat body, and the pressing assembly is slidingly connected to the guide rail in the vertical direction.

6. The test fixture of claim 5, wherein, The pressing assembly includes a sliding part and a pressing part, the sliding part being slidingly connected to the guide rail in the vertical direction, and the pressing part extending from the sliding part towards the fixing device.

7. The test fixture of claim 1, wherein, The lifting assembly further includes a pressing rod, a first connecting rod, and a second connecting rod. The head of the pressing rod is at an angle with the length extension direction of the handle, the head of the pressing rod is rotatably connected to the seat body and the first end of the first connecting rod at both ends of the length extension direction, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod is fixedly connected to the pressing assembly.

8. The test fixture of claim 7, wherein, The seat body is provided with a guide assembly penetrating through both ends in the vertical direction, the guide assembly is sleeved on the second connecting rod, so that the second connecting rod can linearly move in the vertical direction.

9. The test fixture of any one of claims 1 to 8, wherein, The housing is made of metal.

10. A test fixture, characterized by, The control device and the test fixture according to any one of claims 1 to 9 are included. The test fixture includes a fixing device having a plurality of interfaces, and the control device is electrically connected to one or more of the interfaces.

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