A tri-coaxial output switching device

Abstract

The utility model relates to a kind of three coaxial output switching device, it includes closed shell, PCB board, phoenix terminal and three coaxial socket;PCB board is fixedly arranged in closed shell;The side of phoenix terminal is fixed on PCB board and is electrically connected with PCB board, the other side of phoenix terminal is plug-in end and passes out to the outside of closed shell, and phoenix terminal is spaced apart with the inner wall of closed shell;The side of three coaxial socket is fixed on PCB board and is electrically connected with PCB board, the other side of phoenix terminal is connecting end and passes out to the outside of closed shell;Phoenix terminal, PCB board and three coaxial socket form switching part, by the closed shell being set, and the connecting part of phoenix terminal, PCB board and three coaxial socket three is located in the inside of closed shell, closed shell can effectively shield the interference of external signal;And the part of phoenix terminal in closed shell is spaced apart with the inner wall of closed shell, can avoid the leakage between the pin of phoenix terminal, and test precision is high.

Description

Technical Field

[0001] This utility model relates to the field of three coaxial cable adapter technology, and in particular to a three coaxial output adapter device. Background Technology

[0002] When testing electronic devices, a source meter can output current or voltage to the device under test (DUT) to measure its response to the signal. The source meter's output is connected to a cable, which in turn connects to probes, which are then connected to pins on the DUT.

[0003] When measuring small currents (nA, pA), a three-axis coaxial cable should be used. The inner shield of the three-axis coaxial cable is connected to the source meter's protection signal, and the outer shield is grounded. This ensures that the inner core of the three-axis coaxial cable and the inner shield are at the same potential, preventing leakage current and improving the accuracy of small current testing.

[0004] However, in actual use, the output signal, protection signal and ground signal of the source meter are all Phoenix terminals. The signals of the adapter part in the traditional adapter connection method cannot be shielded, and the adapter part itself has leakage current, which affects the test accuracy. Utility Model Content

[0005] In view of this, it is necessary to provide a three-coaxial output adapter to solve the problem that the output signal, protection signal and ground signal of the source meter are all Phoenix terminals, and the signals of the adapter part in the traditional adapter connection method cannot be shielded, and the adapter part itself has leakage current, which affects the test accuracy.

[0006] This utility model provides a triaxial output adapter, including a closed housing, a PCB board, a Phoenix terminal, and a triaxial socket; the PCB board is fixedly disposed inside the closed housing; one side of the Phoenix terminal is fixed to the PCB board and electrically connected to the PCB board, and the other side of the Phoenix terminal is a plug-in end that extends to the outside of the closed housing, and the Phoenix terminal is spaced apart from the inner wall of the closed housing; one side of the triaxial socket is fixed to the PCB board and electrically connected to the PCB board, and the other side of the Phoenix terminal is a connecting end that extends to the outside of the closed housing.

[0007] Furthermore, the PCB board has an internal output terminal, a protection signal terminal, and a ground terminal. The three coaxial socket located inside the enclosed housing has an inner core, an inner shielding layer, and an outer shielding layer on one side. The output terminal of the PCB board is connected to the inner core, the protection signal terminal of the PCB board is connected to the inner shielding layer, and the ground terminal of the PCB board is connected to the outer shielding layer.

[0008] Furthermore, the number of outer shielding layers is four, and the four outer shielding layers are evenly arranged along the circumference of the inner core and surround the inner shielding layer.

[0009] Furthermore, the enclosed housing includes a base, a front cover, and a top cover. The top of the base is recessed inward to form a mounting cavity, and a first mounting port is provided on the side wall of the mounting cavity. The front cover is detachably connected to the base to open and close the first mounting port. A second mounting port is formed on the top of the mounting cavity. The top cover is detachably connected to the base to open and close the second mounting port. The base, the front cover, and the top cover form a closed structure.

[0010] Furthermore, an opening is provided on the side wall of the base away from the first mounting port, and one side of the phoenix terminal extends out of the mounting cavity through the opening.

[0011] Furthermore, it also includes a captive screw mounted on the base, the captive screw being oriented in the same direction as the insertion direction of the phoenix terminal.

[0012] Furthermore, the front cover has multiple round holes, through which the three coaxial sockets extend to the outside of the mounting cavity.

[0013] Furthermore, the three coaxial socket is provided with multiple retaining rings, which abut against the inner wall of the front cover and near the multiple circular holes to seal the gap between the three coaxial socket and the circular holes.

[0014] Furthermore, it also includes a push-button switch, which is fixedly mounted on the PCB board and electrically connected to the PCB board.

[0015] Furthermore, a switch hole is provided on the top of the enclosed housing, and the top of the push-button switch extends through the switch hole to the outside of the enclosed housing.

[0016] Compared to existing technologies, this method allows for direct insertion of the Phoenix terminal into the device under test (DUT) and connection of the source meter via the three-coaxial socket. The device's response to the signal can then be measured. The Phoenix terminal, PCB board, and three-coaxial socket form an adapter. A closed housing, with the connection points of the Phoenix terminal, PCB board, and three-coaxial socket located inside, effectively shields against external signal interference. Furthermore, the portion of the Phoenix terminal within the closed housing is spaced from the inner wall of the housing, preventing leakage between the Phoenix terminal pins and ensuring high testing accuracy. Attached Figure Description

[0017] Figure 1An exploded view of the entire three-coaxial output adapter provided in this embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the overall internal structure of the three coaxial output adapter provided in this embodiment of the utility model;

[0019] Figure 3 for Figure 1-2 A schematic diagram of the structure of a three-axis coaxial socket. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] like Figure 1-2 As shown, the present invention provides a triaxial output adapter, including a closed housing 100, a PCB board 200, a phoenix terminal 300, and a triaxial socket 400; the PCB board 200 is fixedly disposed inside the closed housing 100; one side of the phoenix terminal 300 is fixed to the PCB board 200 and electrically connected to the PCB board 200, and the other side of the phoenix terminal 300 is a plug-in end that extends to the outside of the closed housing 100, and the phoenix terminal 300 is spaced apart from the inner wall of the closed housing 100; one side of the triaxial socket 400 is fixed to the PCB board 200 and electrically connected to the PCB board 200, and the other side of the phoenix terminal 300 is a connecting end that extends to the outside of the closed housing 100.

[0022] In use, simply plug the Phoenix terminal 300 into the device under test (DUT) and connect it to the source meter via the three-coaxial socket 400 to measure the device's response to the signal. The Phoenix terminal 300, PCB board 200, and three-coaxial socket form an adapter section. A closed housing 100 is provided, and the connection points of the Phoenix terminal 300, PCB board 200, and three-coaxial socket 400 are located inside the closed housing 100. The closed housing 100 effectively shields against external signal interference. Furthermore, the portion of the Phoenix terminal 300 located inside the closed housing 100 is spaced apart from the inner wall of the closed housing 100, preventing leakage between the pins of the Phoenix terminal 300 and ensuring high testing accuracy.

[0023] The enclosed housing 100 in this embodiment includes a base 110, a front cover 120, and a top cover 130. The top of the base 110 is recessed inward to form a mounting cavity, and a first mounting port is provided on the side wall of the mounting cavity. The front cover 120 is detachably connected to the base 110 to open and close the first mounting port. A second mounting port is formed on the top of the mounting cavity of the base 110. The top cover 130 is detachably connected to the base 110 to open and close the second mounting port. The base 110, the front cover 120, and the top cover 130 form a closed structure.

[0024] In this embodiment, the PCB board 200 is structured to connect the Phoenix terminal 300 and the triaxial socket 400.

[0025] like Figure 3 As shown, the PCB board 200 has an internal output terminal, a protection signal terminal, and a ground terminal. The three coaxial socket 400 is located inside the enclosed housing 100 and has an inner core 410, an inner shielding layer 420, and an outer shielding layer 430 on one side. The output terminal of the PCB board 200 is connected to the inner core 410, the protection signal terminal of the PCB board 200 is connected to the inner shielding layer 420, and the ground terminal of the PCB board 200 is connected to the outer shielding layer 430.

[0026] There are four outer shielding layers 430, which are evenly arranged around the inner core 410 and surround the inner shielding layer 420.

[0027] It is understandable that the three coaxial socket 400 is a structure that those skilled in the art can conceive of, and will not be elaborated or explained further here.

[0028] In one embodiment, the base 110 has an opening 111 on its side wall away from the first mounting port, and one side of the phoenix terminal 300 extends out of the mounting cavity through the opening 111.

[0029] In one embodiment, grooves are formed on both sides of the base 110, and the design of the grooves on both sides makes it convenient for the operator to insert and remove the adapter.

[0030] In one embodiment, a captive screw 112 is also included, mounted on the base 110, with the captive screw 112 facing the same direction as the insertion of the phoenix terminal 300. In use, the phoenix terminal 300 is directly inserted, and then the captive screws 112 on both sides are tightened for secure installation.

[0031] In one embodiment, the front cover 120 has multiple round holes, through which the three coaxial sockets 400 extend to the outside of the mounting cavity.

[0032] In one embodiment, the triaxial socket 400 is provided with a plurality of retaining rings 440, which abut against the inner wall of the front cover 120 and near the plurality of round holes, respectively, to seal the gap between the triaxial socket 400 and the round holes.

[0033] This embodiment also includes a push-button switch 500, which is fixedly mounted on and electrically connected to the PCB board 200. The push-button switch 500 can be switched between grounding modes.

[0034] In one embodiment, a switch hole 131 is provided on the top of the enclosed housing 100, and the top of the push-button switch 500 extends through the switch hole 131 to the outside of the enclosed housing 100.

[0035] Compared with existing technologies:

[0036] 1) Good shielding effect: The enclosed shell 100, the phoenix terminal 300 and the three coaxial grounding connections form a sealed cavity, which can shield external signal interference.

[0037] 2) Low leakage current: There is an installation gap between the Phoenix terminal 300 and the enclosed housing 100, so that there is almost no current between the output terminals of the Phoenix terminal 300 (the pins connected to the device under test); and the protection signal is connected to the inner shield, so that the output terminals of the Phoenix terminal 300 and the inner shield layer 420 are at the same potential, and no leakage current is generated.

[0038] 3) Simple structure and easy to use: signal conversion of multiple sockets can be completed by direct plugging. The groove design on both sides makes it easy for operators to plug and unplug the adapter. The top button switch can switch the grounding mode at any time.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-coaxial output adapter, characterized in that, include: Enclosed casing; The PCB board is fixedly installed inside the enclosed housing; The Phoenix terminal is fixed to the PCB board on one side and electrically connected to the PCB board. The other side of the Phoenix terminal is a plug-in end that extends to the outside of the enclosed housing. The Phoenix terminal is spaced apart from the inner wall of the enclosed housing. The three coaxial sockets are fixed to the PCB board on one side and electrically connected to the PCB board, while the other side of the Phoenix terminal is a connection end that extends to the outside of the enclosed housing.

2. The three-coaxial output adapter according to claim 1, characterized in that, The PCB board has an internal output terminal, a protection signal terminal, and a ground terminal. The three coaxial socket located inside the enclosed housing has an inner core, an inner shielding layer, and an outer shielding layer. The output terminal of the PCB board is connected to the inner core, the protection signal terminal of the PCB board is connected to the inner shielding layer, and the ground terminal of the PCB board is connected to the outer shielding layer.

3. The three-coaxial output adapter according to claim 2, characterized in that, The number of outer shielding layers is four, and the four outer shielding layers are evenly arranged along the circumference of the inner core and surround the inner shielding layer.

4. The three-coaxial output adapter according to claim 1, characterized in that, The enclosed housing includes a base, a front cover, and a top cover. The top of the base is recessed inward to form a mounting cavity, and a first mounting port is provided on the side wall of the mounting cavity. The front cover is detachably connected to the base to open and close the first mounting port. A second mounting port is formed on the top of the mounting cavity. The top cover is detachably connected to the base to open and close the second mounting port. The base, the front cover, and the top cover form a closed structure.

5. The three-coaxial output adapter according to claim 4, characterized in that, An opening is provided on the side wall of the base away from the first mounting port, and one side of the phoenix terminal extends through the opening to the outside of the mounting cavity.

6. The three-coaxial output adapter according to claim 4, characterized in that, It also includes a captive screw mounted on the base, the captive screw being oriented in the same direction as the insertion direction of the phoenix terminal.

7. The three-coaxial output adapter according to claim 4, characterized in that, The front cover has multiple round holes, and the three coaxial sockets extend out of the mounting cavity through these round holes.

8. The three-coaxial output adapter according to claim 7, characterized in that, The three coaxial socket is provided with multiple retaining rings, which abut against the inner wall of the front cover and near the multiple circular holes to seal the gap between the three coaxial socket and the circular holes.

9. The three-coaxial output adapter according to claim 1, characterized in that, It also includes a push-button switch, which is fixedly mounted on the PCB board and electrically connected to the PCB board.

10. The three-coaxial output adapter according to claim 9, characterized in that, The top of the enclosed housing has a switch hole, and the top of the push-button switch extends through the switch hole to the outside of the enclosed housing.

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