A tri-coaxial output switching device

Abstract

The utility model relates to a kind of three coaxial output switching device, it includes closed shell, insulating fixed seat, multiple banana socket, multiple three coaxial socket and multiple cable;Insulating fixed seat is fixedly arranged on the inner wall of closed shell;The side of multiple banana socket is extended to switching cavity and is connected with insulating fixed seat, the other side of multiple banana socket is used for with the measured device plug-in;Multiple three coaxial socket is fixedly connected with the side wall of closed shell;Multiple banana socket is connected with multiple three coaxial socket via multiple cable;Banana socket, cable and three coaxial socket form switching part, by the closed shell being set, and the connecting part of banana socket, cable and three coaxial socket three is located in the inside of closed shell, closed shell can effectively shield the interference of external signal;And banana socket is connected with closed shell via insulating fixed seat, can avoid multiple banana head socket between forming leakage current, 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 signals, protection signals and grounding signals at the source meter output terminal are all banana plugs. 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 banana plugs, 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, an insulating base, multiple banana-shaped connectors, multiple triaxial connectors, and multiple cables. A closed adapter cavity is formed within the closed housing. The insulating base is fixedly mounted on the inner wall of the closed housing. One side of each banana-shaped connector extends into the adapter cavity and connects to the insulating base, while the other side of each banana-shaped connector is used for connection to a device under test. Each triaxial connector is fixedly connected to the side wall of the closed housing, and one side of each triaxial connector extends into the adapter cavity, while the other side of each triaxial connector is used for connection to a source meter. Multiple cables are disposed within the adapter cavity, and the multiple banana-shaped connectors are connected to the multiple triaxial connectors via the multiple cables.

[0007] Furthermore, the plurality of banana-shaped sockets include a plurality of output terminal connection sockets, a protection signal terminal connection socket, and a grounding terminal connection socket. The plurality of triaxial sockets each include an inner core, a first insulating layer, an inner shielding layer, a second insulating layer, an outer shielding layer, and a protective sleeve arranged coaxially from the inside out. The plurality of output terminal connection sockets are respectively connected to the inner cores of the plurality of triaxial sockets via the plurality of cables. The protection signal terminal connection socket is connected to the inner shielding layer of the plurality of triaxial sockets via the cables. The grounding terminal connection socket is connected to the outer shielding layer of the plurality of triaxial sockets via the cables.

[0008] Furthermore, the outer shielding layer of the plurality of the three coaxial sockets is connected to the housing, and the grounding terminal connection socket is connected to the outer shielding layer of one of the three coaxial sockets via the cable.

[0009] Furthermore, there are four output terminal connectors and four triaxial connectors.

[0010] Furthermore, the insulating mounting base is connected to the enclosed housing via screws.

[0011] Furthermore, the insulating fixing base is provided with multiple stepped holes, and the side wall of the closed housing is provided with multiple through holes. The multiple through holes are respectively connected to the multiple stepped holes. The multiple banana sockets pass through the multiple through holes and the multiple stepped holes and are all connected to nuts. The shoulder of the outer wall of each banana socket abuts against the corresponding stepped hole.

[0012] Furthermore, it also includes multiple ceramic sleeves and multiple ceramic pads, each of the banana sockets is fitted with a ceramic sleeve and a ceramic pad, the ceramic sleeve abuts against one side of the insulating fixing seat, and the ceramic pad is clamped in the gap between the insulating fixing seat and the nut.

[0013] Furthermore, the ceramic sleeve extends into the stepped hole to isolate the insulating mounting base and the banana socket.

[0014] Furthermore, the plurality of banana sockets and the plurality of triaxial sockets are disposed opposite to each other on both sides of the enclosed housing.

[0015] Furthermore, the enclosed housing includes a base, four side panels, and a cover plate. The four side panels are arranged together to form a frame structure. The bottom of the four side panels is detachably connected to the base, and the top of the four side panels is detachably connected to the cover plate.

[0016] Compared to existing technologies, this method allows for direct connection of the banana plug to the device under test (DUT) via a three-coaxial connector, and then to a source meter to measure the device's response to the signal. The banana plug, cable, and three-coaxial connector form an adapter. A closed housing, with the connection points of the banana plug, cable, and three-coaxial connector located inside, effectively shields against external signal interference. Furthermore, the banana plug's connection to the closed housing via an insulating mounting bracket prevents leakage current between multiple banana plugs, resulting in high testing accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the three coaxial output adapter provided in this embodiment of the utility model;

[0018] Figure 2 for Figure 1 Installation diagram of the middle insulating base;

[0019] Figure 3 for Figure 1 A schematic diagram showing the arrangement of multiple banana sockets and multiple triaxial sockets;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of a three-axis coaxial socket. Detailed Implementation

[0021] 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.

[0022] like Figure 1-2 As shown, the present invention provides a triaxial output adapter, comprising a closed housing 100, an insulating base 240, multiple banana plugs 200, multiple triaxial plugs 300, and multiple cables 400; a closed adapter cavity is formed inside the closed housing 100; the insulating base 240 is fixedly disposed on the inner wall of the closed housing 100; one side of each of the multiple banana plugs 200 extends into the adapter cavity and is connected to the insulating base 240, and the other side of each of the multiple banana plugs 200 is used for insertion into the device under test; each of the multiple triaxial plugs 300 is fixedly connected to the side wall of the closed housing 100, and one side of each of the multiple triaxial plugs 300 extends into the adapter cavity, and the other side of each of the multiple triaxial plugs 300 is used for connection to the source meter; multiple cables 400 are disposed in the adapter cavity, and the multiple banana plugs 200 are connected to the multiple triaxial plugs 300 via the multiple cables 400.

[0023] In use, simply plug the banana plug 200 into the device under test and connect it to the source meter via the three-coaxial socket 300 to measure the device's response to the signal. The banana plug 200, cable 400, and three-coaxial socket 300 form an adapter section. The connection between the banana plug 200, cable 400, and three-coaxial socket 300 is located inside the enclosed housing 100, which effectively shields against external signal interference. Furthermore, the banana plug 200 is connected to the enclosed housing 100 via the insulating mounting base 240, which prevents leakage current between multiple banana plugs and ensures high testing accuracy.

[0024] The enclosed housing 100 in this embodiment includes a base, four side plates, and a cover plate. The four side plates together form a frame structure. The bottom of the four side plates is detachably connected to the base, and the top of the four side plates is detachably connected to the cover plate. A closed transition cavity is formed between the base, the four side plates, and the cover plate, which can effectively shield external signal interference.

[0025] In one embodiment, the opposite sides of the two opposing side plates are both sloped, and the distance between the two sloped surfaces gradually decreases in a direction perpendicular to the other two side plates to facilitate plugging and unplugging the adapter.

[0026] In this embodiment, the insulating mounting base 240 is located on the inner wall of the enclosed housing 100, which can prevent leakage current between multiple banana plug sockets and ensure high testing accuracy.

[0027] like Figure 4 As shown, in one embodiment, the plurality of banana sockets 200 include a plurality of output terminal connection sockets 210, a protection signal terminal connection socket 220, and a ground terminal connection socket 230. The plurality of triaxial sockets 300 each include an inner core 310, a first insulating layer 320, an inner shielding layer 330, a second insulating layer 340, an outer shielding layer 350, and a protective sleeve 360 ​​arranged coaxially from the inside to the outside. The plurality of output terminal connection sockets 210 are respectively connected to the inner cores 310 of the plurality of triaxial sockets 300 via a plurality of cables 400. The protection signal terminal connection socket 220 is connected to the inner shielding layer 330 of the plurality of triaxial sockets 300 via a cable 400. The ground terminal connection socket 230 is connected to the outer shielding layer 350 of the plurality of triaxial sockets 300 via a cable 400.

[0028] To reduce the number of cables 400, in one embodiment, the outer shielding layer 350 of multiple triaxial sockets 300 is connected to the housing, and the grounding terminal connection socket 230 is connected to the outer shielding layer 350 of one of the triaxial sockets 300 via the cable 400.

[0029] The protective sleeve 360 ​​of the banana socket 200 has a round hole through the closed housing 100. At the same time, the outer wall of the protective sleeve 360 ​​has an opening so that the outer shielding layer 350 can extend to the outside of the protective sleeve 360 ​​and connect with the closed housing 100.

[0030] In this embodiment, there are four output terminal connection sockets 210 and four triaxial sockets 300.

[0031] The insulating mounting base 240 is connected to the enclosed housing 100 by screws.

[0032] To facilitate the connection between the banana socket 200 and the insulating mounting base 240, the insulating mounting base 240 is provided with multiple stepped holes, and the side wall of the enclosed housing 100 is provided with multiple through holes, which are connected to the multiple stepped holes respectively. Multiple banana sockets 200 pass through the multiple through holes and the multiple stepped holes respectively and are all connected to the nuts 250. The shoulder of the outer wall of each banana socket 200 abuts against the corresponding stepped hole.

[0033] To further improve insulation performance, this embodiment also includes multiple ceramic sleeves 260 and multiple ceramic pads 270. Each banana socket 200 is fitted with a ceramic sleeve 260 and a ceramic pad 270. The ceramic sleeve 260 abuts against one side of the insulating fixing seat 240, and the ceramic pad 270 is clamped in the gap between the insulating fixing seat 240 and the nut 250. The ceramic sleeve 260 extends into the stepped hole to isolate the insulating fixing seat 240 from the banana socket 200.

[0034] like Figure 4 As shown, multiple banana sockets 200 and multiple triaxial sockets 300 are arranged opposite each other on both sides of the enclosed housing 100.

[0035] Compared with existing technologies:

[0036] 1) Good shielding effect: The enclosed shell 100, source meter and three coaxial lines are grounded and the sealed cavity formed can effectively shield external signal interference.

[0037] 2) Low leakage current: The banana plug is padded with high-voltage ceramic material (ceramic sleeve 260 and ceramic pad 270) between it and the outer shell, so that there is almost no current between the multiple output terminal connection sockets 210; the protection signal terminal connection socket 220 is connected to the inner shield of the three coaxial socket 300, so that the output terminal connection socket 210 and the inner shield layer 330 of the three coaxial socket 300 are at the same potential, and no leakage current is generated.

[0038] 3) Easy to use: Signal transfer between multiple sockets can be completed simply by plugging them in. The enclosed shell with beveled sides makes plugging and unplugging easy.

[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: A closed outer shell, with a closed transition cavity formed inside; An insulating mounting base is fixedly mounted on the inner wall of the enclosed housing; Multiple banana-shaped sockets, one side of which extends into the adapter cavity and is connected to the insulating fixing base, and the other side of the multiple banana-shaped sockets is used to connect to the device under test; Multiple three-coaxial sockets are fixedly connected to the side wall of the enclosed housing, and one side of each of the multiple three-coaxial sockets extends into the adapter cavity, while the other side of each of the multiple three-coaxial sockets is used to connect to the source meter. Multiple cables are installed inside the adapter cavity, and the multiple banana sockets are connected to the multiple triaxial sockets via the multiple cables.

2. The three-coaxial output adapter according to claim 1, characterized in that, The plurality of banana-shaped sockets include a plurality of output terminal connection sockets, a protection signal terminal connection socket, and a ground terminal connection socket. The plurality of triaxial sockets each include an inner core, a first insulating layer, an inner shielding layer, a second insulating layer, an outer shielding layer, and a protective sleeve arranged coaxially from the inside out. The plurality of output terminal connection sockets are respectively connected to the inner cores of the plurality of triaxial sockets via the plurality of cables. The protection signal terminal connection socket is connected to the inner shielding layer of the plurality of triaxial sockets via the cables. The ground terminal connection socket is connected to the outer shielding layer of the plurality of triaxial sockets via the cables.

3. The three-coaxial output adapter according to claim 2, characterized in that, The outer shielding layer of the plurality of the three coaxial sockets is connected to the housing, and the grounding terminal connection socket is connected to the outer shielding layer of one of the three coaxial sockets via the cable.

4. The three-coaxial output adapter according to claim 2, characterized in that, There are four output terminal connectors and four triaxial connectors.

5. The three-coaxial output adapter according to claim 1, characterized in that, The insulating mounting base is connected to the enclosed housing via screws.

6. The three-coaxial output adapter according to claim 1, characterized in that, The insulating mounting base has multiple stepped holes, and the side wall of the enclosed housing has multiple through holes. The multiple through holes are connected to the multiple stepped holes respectively. The multiple banana sockets pass through the multiple through holes and the multiple stepped holes respectively and are all connected to nuts. The shoulder of the outer wall of each banana socket abuts against the corresponding stepped hole.

7. The three-coaxial output adapter according to claim 6, characterized in that, It also includes multiple ceramic sleeves and multiple ceramic pads. Each banana socket is fitted with a ceramic sleeve and a ceramic pad. The ceramic sleeve abuts against one side of the insulating fixing seat, and the ceramic pad is clamped in the gap between the insulating fixing seat and the nut.

8. The three-coaxial output adapter according to claim 7, characterized in that, The ceramic sleeve extends into the stepped hole to isolate the insulating mounting base and the banana socket.

9. The three-coaxial output adapter according to claim 1, characterized in that, Multiple banana-shaped sockets and multiple triaxial sockets are arranged opposite each other on both sides of the enclosed housing.

10. The three-coaxial output adapter according to claim 1, characterized in that, The enclosed housing includes a base, four side panels, and a cover plate. The four side panels are arranged together to form a frame structure. The bottom of the four side panels is detachably connected to the base, and the top of the four side panels is detachably connected to the cover plate.

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