Cable test fixture

Abstract

The utility model discloses a cable test fixture, which comprises a fixture bottom plate, a circuit board positioning cavity is arranged at the rear end of the fixture bottom plate, a PCB (printed circuit board) is mounted in the circuit board positioning cavity, and a socket connector for plugging a measuring head of a network analyzer is arranged on the PCB; an inner conductor connector is installed in the middle of the jig bottom plate, the inner conductor connector is provided with a connecting groove used for being inserted into an inner conductor of a cable, a metal contact piece is arranged in the connecting groove, and the socket connector, the PCB and the metal contact piece are electrically connected in sequence; the middle part of the jig bottom plate is also provided with an inner conductor pressing assembly; the inner conductor pressing assembly is used for pressing the inner conductor of the cable on the metal contact piece; a metal pressing block is installed at the front end of the jig bottom plate and used for pressing the cable, making contact with an outer conductor of the cable and enabling the outer conductor of the cable to be grounded. According to the utility model, when the network analyzer tests the electrical performance of the cable, the reliability of the test performance can be ensured, the test convenience is high, and the test efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable test equipment technical field, especially a kind of cable test fixture. BACKGROUND

[0002] Vehicle-mounted cable, high-speed transmission cable are more and more widely applied, vehicle-mounted cable, high-speed transmission cable usually include inner conductor and outer conductor, inner conductor is usually used to transmit signal, and the outer conductor of inner conductor is coated with insulating layer, and the outer conductor of outer conductor is coated with outer conductor, and outer conductor is usually used to shield signal or ground, when vehicle-mounted cable, high-speed transmission cable have two inner conductors, two inner conductors can form symmetrical line, and can transmit differential signal. Signal transmission performance and other electrical properties of vehicle-mounted cable, high-speed transmission cable are an important index of cable test, in prior art, network analyzer is usually used to test signal transmission of vehicle-mounted cable, high-speed transmission cable, and its test method is that the two ends of inner conductor of cable are connected with the probe of network analyzer respectively, and the outer conductor of cable is grounded, then the signal transmission performance and other electrical properties of inner conductor of cable are tested by network analyzer. However, the problems of this test method are that: it is difficult to connect the inner conductor of cable directly with the probe of network analyzer, and it is often necessary to weld connector on the end of cable before connecting with the probe of network analyzer, furthermore, the outer conductor of cable is not convenient to ground, based on the above reasons, the electrical property test of cable by network analyzer is not convenient, low efficiency, and the reliability is not high enough. SUMMARY

[0003] The utility model wants to solve the technical problem according to prior art's insufficient, provide a kind of cable test fixture, the cable test fixture can be quickly inserted the probe of network analyzer, the inner conductor of cable is quickly inserted and makes the probe of network analyzer and the inner conductor of cable reach electric connection, the cable is quickly pressed and contacts the outer conductor of cable, so that the outer conductor of cable is grounded, so that when network analyzer tests the electrical property of cable, it can be high in test convenience and test efficiency while guaranteeing the reliability of test performance.

[0004] The utility model discloses a technical scheme for solving the above technical problems: a cable test fixture, including fixture bottom plate, the rear end of fixture bottom plate is equipped with circuit board positioning cavity, and the inside installation of circuit board positioning cavity has the PCB circuit board, and the top of PCB circuit board is equipped with the socket connector for the probe of network analyzer and is inserted, the middle part of fixture bottom plate is equipped with the inner conductor connector, and the inner conductor connector is equipped with the connecting groove for inserting the inner conductor of cable, and the inside of connecting groove is equipped with metal contact piece, and socket connector, PCB circuit board and metal contact piece are electrically connected in proper order, the middle part of fixture bottom plate still is equipped with the inner conductor pressure assembly, and the inner conductor pressure assembly is used for pressing the inner conductor of cable to the top of metal contact piece, the front end of fixture bottom plate is equipped with metal pressing block, and metal pressing block is used for pressing cable and contacts the outer conductor of cable, and makes the outer conductor of cable ground.

[0005] In the above technical scheme, the top of PCB circuit board is equipped with two socket connectors, the inner conductor connector is equipped with two connecting grooves, one socket connector is electrically connected with the metal contact piece in one connecting groove through PCB circuit board, and the other socket connector is electrically connected with the metal contact piece in the other connecting groove through PCB circuit board.

[0006] In the above technical scheme, the rear end of fixture bottom plate is equipped with circuit board cover plate, and the circuit board cover plate covers the top of PCB circuit board, and the circuit board cover plate is equipped with the through hole for the socket connector to pass through.

[0007] In the above technical scheme, the middle part of fixture bottom plate is equipped with connector positioning plate, the middle part of connector positioning plate is equipped with positioning recess cavity, and the inner conductor connector is installed in the positioning recess cavity.

[0008] In the above technical scheme, the inner conductor pressure assembly includes gantry, screw rod, sliding block and pressing block, the gantry includes left stand, right stand and crossbeam, and the left stand and right stand are vertically installed on the middle two sides ends of fixture bottom plate, and the crossbeam is connected between the top of left stand and right stand, the middle part of crossbeam is equipped with vertical screw hole, the screw rod vertically passes through screw hole and is screw thread transmission cooperation with screw hole, the sliding block is slidably installed between left stand and right stand, and the middle upper end of sliding block is movably connected with the lower end of screw rod, the pressing block is installed on the middle lower end of sliding block, and the pressing block is equipped with the pressure head for inserting into connecting groove, further, the opposite sides of left stand and right stand are respectively equipped with vertical sliding slot, and the both ends of sliding block are respectively equipped with convex part that is sliding cooperation with sliding slot, the lower end of screw rod is equipped with rotary head, and the middle upper end of sliding block is equipped with the rotary cavity for the rotation of rotary head, and the upper end of screw rod is equipped with handle.

[0009] In the above technical scheme, the left end of the metal pressing block is movably connected with the left side of the front end of the jig bottom plate, and the right end of the metal pressing block is a free end.

[0010] In the above technical scheme, a wire slot for placing the cable is arranged on the upper side of the middle part of the front end of the jig bottom plate, and one end of the wire slot corresponds to the position of the inner conductor connector.

[0011] The utility model discloses the beneficial effect is: the utility model discloses the rear end of jig bottom plate is equipped with circuit board positioning cavity, and the PCB circuit board is installed in circuit board positioning cavity, and the socket connector for inserting the probe of network analyzer is equipped on the PCB circuit board, therefore, the network analyzer is in the process of testing cable, need not directly connecting the inner conductor of cable, only need to insert the probe into the socket connector on the PCB circuit board can, to realize the purpose of quick insertion probe of network analyzer, the utility model discloses the middle part of jig bottom plate is equipped with inner conductor connector, and the inner conductor connector is equipped with the connecting groove for inserting the inner conductor of cable, and the metal contact piece is equipped in the connecting groove, and the socket connector, the PCB circuit board and the metal contact piece are electrically connected in proper order, and the middle part of jig bottom plate is also equipped with inner conductor compression assembly, and the inner conductor compression assembly is used for pressing the inner conductor of cable on the metal contact piece, therefore, when the inner conductor of cable inserts the connecting groove of inner conductor connector, the inner conductor of cable can contact the metal contact piece in the connecting groove, and then utilizes the inner conductor compression assembly to press the inner conductor of cable and the metal contact piece each other, reaches solid connection, to reach the purpose of quick insertion inner conductor of cable and the probe of network analyzer and the inner conductor of cable reach electric connection, the utility model discloses the front end of jig bottom plate is equipped with metal pressing block, therefore, the utility model discloses can press tightly cable and contact the outer conductor of cable, and the outer conductor of cable is grounded, it can be seen that, the utility model discloses can make network analyzer when testing the electrical performance of cable, can guarantee the reliability of test performance simultaneously, and the test convenience is high, and the test efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structure schematic diagram of the utility model.

[0013] Figure 2 It is the structure schematic diagram of the utility model opening metal pressing block and pressing block positioning block.

[0014] Figure 3 It is the dispersion structure schematic diagram of the utility model.

[0015] Figure 4A schematic view of the dispersion structure of the inner conductor compression assembly and the inner conductor connector. DETAILED DESCRIPTION

[0016] The structural principle and working principle of the utility model will be further explained in detail below in combination with the drawings.

[0017] As Figures 1-4 shown, the utility model is a kind of cable test fixture, including jig base plate 1, the rear end of jig base plate 1 is equipped with circuit board positioning cavity 101, and PCB circuit board 2 is installed in circuit board positioning cavity 101, and the socket connector 3 for inserting the probe of network analyzer is equipped on PCB circuit board 2;The middle part of jig base plate 1 is equipped with inner conductor connector 4, and the connecting groove 41 for inserting the inner conductor of cable is equipped in inner conductor connector 4, and metal contact piece 42 is equipped in connecting groove 41, and the socket connector 3, PCB circuit board 2 and metal contact piece 42 are sequentially electrically connected, and one end of metal contact piece 42 can be directly welded on PCB circuit board 2, or connected with PCB circuit board 2 by wire;The middle part of jig base plate 1 is also equipped with inner conductor compression assembly, and the inner conductor compression assembly is used to compress the inner conductor of cable on metal contact piece 42;The front end of jig base plate 1 is equipped with metal pressing block 5, and metal pressing block 5 is used to compress cable and contact the outer conductor of cable, and the outer conductor of cable is grounded.

[0018] The utility model in using, need to use two utility model cable test fixture, its test method is as follows: first, one kind of probe of network analyzer is inserted into the socket connector 3 of first cable test fixture, and another probe of network analyzer is inserted into the socket connector 3 of second cable test fixture;Then, the inner conductor of one end of cable is inserted into the connecting groove 41 of the inner conductor connector 4 of first cable test fixture, and the inner conductor of cable is compressed on metal contact piece 42 by inner conductor compression assembly;The inner conductor of the other end of cable is inserted into the connecting groove 41 of the inner conductor connector 4 of second cable test fixture, and the inner conductor of cable is compressed on metal contact piece 42 by inner conductor compression assembly;Then, the metal pressing block 5 of first cable test fixture compresses one end of cable and contacts the outer conductor of one end of cable, and the metal pressing block 5 of second cable test fixture compresses the other end of cable and contacts the outer conductor of the other end of cable;Finally, the electrical performance of cable is tested using network analyzer.

[0019] As Figures 1-3As shown in the preferred mode of the utility model, two socket connectors 3 are arranged on the PCB circuit board 2, and the inner conductor connector 4 is provided with two connecting grooves 41. One of the socket connectors 3 is electrically connected to the metal contact 42 in one of the connecting grooves 41 through the PCB circuit board 2, and the other socket connector 3 is electrically connected to the metal contact 42 in the other connecting groove 41 through the PCB circuit board 2. By arranging two socket connectors 3, two connecting grooves 41 and two metal contacts 42, the utility model can be used to test the electrical performance of a symmetrical cable with two transmission lines.

[0020] As shown in the preferred mode of the utility model, the rear end of the jig base plate 1 is provided with a circuit board cover plate 6, the circuit board cover plate 6 covers the PCB circuit board 2, and the circuit board cover plate 6 is provided with a through hole 61 for the socket connector 3 to pass through. Figures 1-3 As shown in the preferred mode of the utility model, the middle part of the jig base plate 1 is provided with a connector positioning plate 7, the middle part of the connector positioning plate 7 is provided with a positioning recess 71, and the inner conductor connector 4 is installed in the positioning recess 71.

[0021] Figures 1-3 As shown in the preferred mode of the utility model, the middle part of the jig base plate 1 is provided with a connector positioning plate 7, the middle part of the connector positioning plate 7 is provided with a positioning recess 71, and the inner conductor connector 4 is installed in the positioning recess 71.

[0022] As shown in the preferred mode of the utility model, the inner conductor pressing assembly includes a gantry 8, a screw rod 9, a sliding block 10 and a pressing block 11. The gantry 8 includes a left vertical column 81, a right vertical column 82 and a cross beam 83. The left vertical column 81 and the right vertical column 82 are vertically installed on the middle part of the jig base plate 1, and the cross beam 83 is connected between the top parts of the left vertical column 81 and the right vertical column 82. The middle part of the cross beam 83 is provided with a vertical screw hole 831, the screw rod 9 vertically penetrates the screw hole 831 and is threadedly connected with the screw hole 831. The sliding block 10 is slidably installed between the left vertical column 81 and the right vertical column 82, the middle upper end of the sliding block 10 is movably connected with the lower end of the screw rod 9, and the pressing block 11 is installed on the middle lower end of the sliding block 10. The pressing block 11 is provided with a pressing head 111 for being inserted into the connecting groove 41. The opposite sides of the left vertical column 81 and the right vertical column 82 are respectively provided with vertical sliding grooves 84, and the two ends of the sliding block 10 are respectively provided with protruding parts 85 which are slidably connected with the sliding grooves 84. The lower end of the screw rod 9 is provided with a rotating head 91, and the middle upper end of the sliding block 10 is provided with a rotating cavity 1001 for the rotating head 91 to rotate. The upper end of the screw rod 9 is provided with a handle 92. By rotating the handle 92 at the upper end of the screw rod 9, the sliding block 10 can be lifted or lowered, and the pressing head 111 of the pressing block 11 can be pressed into the connecting groove 41 or moved out of the connecting groove 41. Figures 1-4 As shown in the preferred mode of the utility model, the middle part of the jig base plate 1 is provided with a connector positioning plate 7, the middle part of the connector positioning plate 7 is provided with a positioning recess 71, and the inner conductor connector 4 is installed in the positioning recess 71.

[0023] Figures 1-3 ​​As shown, the left end of the metal pressing block 115 is movably hinged to the left side of the front end of the jig base plate 1, and the right end of the metal pressing block 115 is a free end. The cable testing jig further comprises a pressing block positioning block 12, the right end of the pressing block positioning block 12 is movably hinged to the right side of the front end of the jig base plate 1, and the left end of the pressing block positioning block 12 is a free end, the pressing block positioning block 12 is used for pressing the right end of the metal pressing block 115. The upper side of the middle part of the front end of the jig base plate 1 is provided with a wire slot 102 for placing a cable, one end of the wire slot 102 corresponds to the position of the inner conductor connector 4. In the process of pressing the cable, first, one end of the cable is placed in the wire slot 102, then the metal pressing block 115 is rotated and pressed on one end of the cable, and then the pressing block positioning block 12 is rotated and pressed on the metal pressing block 115; in the process of loosening the cable, first, the pressing block positioning block 12 is rotated and loosened from the metal pressing block 115, then the metal pressing block 115 is rotated and loosened from one end of the cable, and the cable can be taken out.

[0024] The above is only a preferred embodiment of the present application, and any slight modification, equivalent change and modification made according to the technical scheme of the present application to the above embodiment all belong to the scope of the technical scheme of the present application.

Claims

1. A cable test fixture, comprising: The utility model provides a kind of cable test fixture, including jig base plate, the rear end of jig base plate is equipped with circuit board positioning cavity, PCB circuit board is installed in circuit board positioning cavity, and the socket connector for inserting the probe of network analyzer is equipped on PCB circuit board;The middle part of jig base plate is equipped with inner conductor connector, and the connecting slot for inserting inner conductor of cable is equipped in inner conductor connector, and metal contact is equipped in connecting slot, and the socket connector, PCB circuit board and metal contact are sequentially electrically connected;The middle part of jig base plate is also equipped with inner conductor compression assembly, and the inner conductor compression assembly is used to compress inner conductor of cable on metal contact;The front end of jig base plate is equipped with metal pressing block, and metal pressing block is used to compress cable and contact outer conductor of cable, and make outer conductor of cable ground.

2. The cable test fixture of claim 1, wherein: Two socket connectors are equipped on the PCB circuit board, and the inner conductor connector is equipped with two connecting slots, one socket connector is electrically connected with the metal contact in one connecting slot after PCB circuit board, and the other socket connector is electrically connected with the metal contact in the other connecting slot after PCB circuit board.

3. The cable test fixture of claim 1, wherein: The rear end of jig base plate is equipped with circuit board cover plate, and the circuit board cover plate covers PCB circuit board, and the through hole for the socket connector to pass through is formed in the circuit board cover plate.

4. The cable test fixture of claim 1, wherein: The middle part of jig base plate is equipped with connector positioning plate, and the middle part of connector positioning plate is equipped with positioning recess, and the inner conductor connector is installed in the positioning recess.

5. The cable test fixture of claim 1, wherein: The inner conductor compression assembly includes gantry, screw rod, sliding block and pressing block, the gantry includes left stand, right stand and crossbeam, the left stand and the right stand are vertically installed on the middle part of jig base plate, and the crossbeam is connected between the top of the left stand and the right stand;The middle part of the crossbeam is equipped with vertical screw hole, and the screw rod vertically penetrates the screw hole and is threadedly driven with the screw hole;The sliding block is slidably installed between the left stand and the right stand, and the upper end of the middle part of the sliding block is movably connected with the lower end of the screw rod, and the pressing block is installed on the lower end of the middle part of the sliding block, and the pressing block is equipped with compression head for inserting into the connecting slot.

6. The cable test fixture of claim 5, wherein: The opposite sides of the left stand and the right stand are respectively equipped with vertical sliding slot, and the two ends of the sliding block are respectively equipped with protruding part slidingly matched with the sliding slot;The lower end of the screw rod is equipped with rotating head, and the upper end of the middle part of the sliding block is equipped with rotating cavity for the rotating head to rotate.

7. The cable test fixture of claim 5, wherein: The upper end of the screw rod is equipped with handle.

8. The cable test fixture of claim 1, wherein: The left end of the metal pressing block is movably hinged with the left side of the front end of jig base plate, and the right end of the metal pressing block is free end.

9. The cable test fixture of claim 8, wherein: The right end of the pressing block positioning block is movably hinged with the right side of the front end of jig base plate, and the left end of the pressing block positioning block is free end, and the pressing block positioning block is used to compress the right end of the metal pressing block.

10. The cable test fixture of claim 8, wherein: The middle part of the front end of jig base plate is equipped with wire slot for placing cable, and one end of the wire slot corresponds to the position of the inner conductor connector.

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