Anti-electromagnetic interference test structure of flexible flat cable (FFC)

Abstract

The utility model relates to the technical field of FFC (Flexible Flat Cable) production, in particular to an anti-electromagnetic interference test structure of an FFC. The utility model relates to an anti-electromagnetic interference test structure of an FFC (Flexible Flat Cable). The anti-electromagnetic interference test structure comprises an anti-electromagnetic cabinet body; the cabinet door is rotationally connected to one side of the cabinet body through a rotating shaft; the detection assembly is used for detecting electromagnetism, the detection assembly comprises a first EMI monitoring sensor and a second EMI monitoring sensor, the first EMI monitoring sensor is arranged on the outer side of the cabinet body, and the second EMI monitoring sensor is arranged on the inner side of the cabinet body. The beneficial effects of the utility model are that by adopting the anti-electromagnetic interference cabinet body, the influence of external electromagnetic waves is effectively shielded, it is ensured that the external electromagnetic interference does not interfere with the accuracy of a test result when an anti-electromagnetic interference test is carried out on the FFC, the reliability of the test is improved, the external electromagnetic interference is effectively shielded, and the test reliability is improved. And meanwhile, electromagnetic waves generated in the cabinet body can be inhibited.

Description

TECHNICAL FIELD

[0001] The utility model relates to FFC flat cable production technical field, concretely is a kind of FFC flat cable's anti-electromagnetic interference test structure. BACKGROUND

[0002] With the increasing popularity of electronic equipment, FFC (Flexible Flat Cable) flat cable gradually increases in various electronic products. As an important connection mode, FFC flat cable is widely used in communication equipment, household appliances, automotive electronics and other fields. Due to its flexibility and high-density design, FFC flat cable is susceptible to electromagnetic interference (EMI) when transmitting signals, which affects the normal operation of the equipment, especially in high-frequency high-speed signal transmission environment, the influence of electromagnetic interference is particularly significant. SUMMARY

[0003] The utility model provides a kind of FFC flat cable's anti-electromagnetic interference test structure to solve the problem of electromagnetic interference to FFC flat cable for the technical problems existing in prior art.

[0004] The technical scheme for solving the above technical problems is as follows: a kind of FFC flat cable's anti-electromagnetic interference test structure, comprising:

[0005] a cabinet for resisting electromagnetic interference;

[0006] a cabinet door rotatably connected to one side of the cabinet;

[0007] a detection assembly for detecting electromagnetic interference, wherein the detection assembly comprises a first EMI monitoring sensor and a second EMI monitoring sensor, the first EMI monitoring sensor is arranged on the outside of the cabinet, and the second EMI monitoring sensor is arranged on the inside of the cabinet;

[0008] a detection jig comprising a substrate and a terminal, the substrate is fixed to the side wall of the cabinet, and the terminal is arranged on the substrate;

[0009] a waveform generator arranged at the bottom of the cabinet.

[0010] The utility model has the advantages of:

[0011] 1) by adopting the cabinet for resisting electromagnetic interference, effectively shielding the influence of external electromagnetic waves, ensuring that the accuracy of the test results is not disturbed by external electromagnetic interference during FFC flat cable anti-electromagnetic interference test, improving the reliability of the test, not only effectively shielding the electromagnetic interference from the outside world, but also suppressing the electromagnetic waves generated inside the cabinet, avoiding unnecessary influence or potential harm to the external environment and test personnel caused by electromagnetic waves generated during the test.

[0012] 2), second, the use of the first and second EMI monitoring sensor, so that the electromagnetic value outside and inside the cabinet can be real-time, visual presentation, can grasp the dynamic changes of electromagnetic environment in real time, avoid unnecessary interference on the test results.

[0013] On the basis of the above technical solutions, the utility model further can make improvement as follows.

[0014] Further, the cabinet body is selected from copper cabinet body.

[0015] The beneficial effect of the above further scheme is that copper material has electromagnetic shielding efficiency, effectively shields external electromagnetic interference, and suppresses the electromagnetic wave generated in the cabinet body.

[0016] Further, the detection tool further includes two vertical quick clamps, and the two vertical quick clamps are respectively arranged on the two sides of the base plate.

[0017] Further, each vertical quick clamp includes a clamp seat, a pressing arm, a handle, a pressing head and a connecting rod.

[0018] Further, the clamp seat is fixed on the base plate, one side of the pressing arm is hinged to the clamp seat, the pressing head is fixed on the other side of the pressing arm, one side of the handle is hinged to the clamp seat, wherein the hinge position of the handle on the clamp seat is away from the hinge position of the pressing arm, one end of the connecting rod is hinged to the handle, and the other end of the connecting rod is hinged to the pressing arm.

[0019] The beneficial effect of the above further scheme is that the product to be tested (for example, a plc board with FFC flat cable) is placed on the base plate, and at the same time, the vertical quick clamp is used to hold the product against the base plate, specifically, by rotating the handle towards the product, the handle drives the pressing arm to rotate towards the product through the connecting rod, and then the pressing head of the pressing arm is pressed on the product, so that the product does not shift or loosen during the test, so as to avoid affecting the test result. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the utility model;

[0021] Figure 2 It is the three-dimensional structure schematic diagram of the detection tool of the utility model.

[0022] In the drawings, the components represented by each reference numeral are listed as follows:

[0023] 10, cabinet body, 20, cabinet door, 30, detection tool, 310, base plate, 320, terminal, 330, vertical quick clamp, 331, clamp seat, 332, pressing arm, 333, handle, 334, pressing head, 335, connecting rod, 40, waveform generator, 50, first EMI monitoring sensor, 60, second EMI monitoring sensor. DETAILED DESCRIPTION

[0024] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0025] With the increasing popularity of electronic equipment, FFC (Flexible Flat Cable) ribbon cable is gradually increasing in various electronic products. As an important connection method, FFC ribbon cable is widely used in communication equipment, household appliances, automotive electronics and other fields. Due to its flexibility and high-density design, FFC ribbon cable is susceptible to electromagnetic interference (EMI) when transmitting signals, which in turn affects the normal operation of the equipment, especially in high-frequency high-speed signal transmission environment, the influence of electromagnetic interference is particularly significant, for this utility model person puts forward a kind of FFC ribbon cable anti-electromagnetic interference test structure to solve the above problems.

[0026] The utility model provides the following preferred embodiments

[0027] As Figure 1 And Figure 2 The utility model discloses a kind of FFC ribbon cable anti-electromagnetic interference test structures, comprising:

[0028] Cabinet body 10 for anti-electromagnetic;

[0029] Cabinet door 20, the cabinet door 20 is rotatably connected on one side of cabinet body 10 by pivot;

[0030] Detection assembly for detecting electromagnetic, wherein the detection assembly includes Narda ELT-400 model first EMI monitoring sensor 50 and Narda ELT-400 model second EMI monitoring sensor 60, the first EMI monitoring sensor 50 is arranged on the outside of cabinet body 10, and the second EMI monitoring sensor 60 is arranged on the inside of cabinet body 10;

[0031] Detection tool 30, the detection tool 30 includes base plate 310 and terminal 320, the base plate 310 is fixed on the side wall of cabinet body 10, and the terminal 320 is arranged on the base plate 310;

[0032] Waveform generator 40, the waveform generator 40 is arranged at the bottom of cabinet body 10;

[0033] By adopting the cabinet body 10 resistant to electromagnetic interference, the influence of external electromagnetic waves is effectively shielded, so that when the FFC flat cable is tested for electromagnetic interference resistance, the accuracy of the test result is not affected by external electromagnetic interference, and the reliability of the test is improved.

[0034] Secondly, by using the first and second EMI monitoring sensors 60 in cooperation, the electromagnetic values outside and inside the cabinet body 10 can be presented in real time and visualized, so that the dynamic changes of the electromagnetic environment can be grasped in real time, and the influence of unnecessary interference on the test result is avoided.

[0035] In this embodiment, as shown in Figure 1 and Figure 2 , the cabinet body 10 is made of copper, which has electromagnetic shielding efficiency, effectively shielding external electromagnetic interference and suppressing electromagnetic waves generated inside the cabinet body 10.

[0036] In this embodiment, as shown in Figure 1 and Figure 2 , the detection jig 30 further comprises two vertical quick clamps 330, and the two vertical quick clamps 330 are respectively arranged on both sides of the base plate 310. Each vertical quick clamp 330 comprises a clamp seat 331, a pressing arm 332, a handle 333, a pressing head 334 and a connecting rod 335. The clamp seat 331 is fixed on the base plate 310. One side of the pressing arm 332 is hinged to the clamp seat 331. The pressing head 334 is fixed on the other side of the pressing arm 332. One side of the handle 333 is hinged to the clamp seat 331, wherein the hinge position of the handle 333 on the clamp seat 331 is away from the hinge position of the pressing arm 332. One end of the connecting rod 335 is hinged to the handle 333, and the other end of the connecting rod 335 is hinged to the pressing arm 332.

[0037] The product to be tested (for example, a PLC board with FFC flat cable) is placed on the base plate 310, and at the same time, the vertical quick clamp 330 is used to hold the product against the base plate 310. Specifically, by rotating the handle 333 towards the product, the handle 333 drives the pressing arm 332 to rotate towards the product through the connecting rod 335, so that the pressing head 334 of the pressing arm 332 presses the product, ensuring that the product does not shift or loosen during the test, so as to avoid affecting the test result.

[0038] The specific working process of the utility model is as follows:

[0039] The cabinet door 20 is opened, the product (for example, the computer mainboard with FFC flat cable) to be tested is placed on the base plate 310, the FFC flat cable on the pcb board is connected with the terminal 320 on the base plate 310, wherein the terminal 320 is connected with the external display, at the same time, the product is pressed on the base plate 310 by using the vertical quick clamp 330, specifically, by rotating the handle 333 in the direction of approaching the product, the handle 333 drives the pressing arm 332 to rotate in the direction of approaching the product through the connecting rod 335, and then the pressing head 334 of the pressing arm 332 is pressed on the pcb board, at this moment, the Keysight 33500B type waveform generator 40 is started, so that the electromagnetic wave generated by the waveform generator 40.

[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electromagnetic interference resistance test structure of a flat flexible cable (FFC), characterized by, The utility model relates to an electromagnetic interference (EMI) detection device, comprising: a cabinet body for anti-EMI; a cabinet door rotatably connected to one side of the cabinet body by a hinge; a detection assembly for detecting electromagnetic, wherein the detection assembly comprises a first EMI monitoring sensor and a second EMI monitoring sensor, the first EMI monitoring sensor is arranged on the outside of the cabinet body, and the second EMI monitoring sensor is arranged on the inside of the cabinet body; a detection jig comprising a base plate and a terminal, the base plate is fixed to the side wall of the cabinet body, and the terminal is arranged on the base plate; a waveform generator arranged at the bottom of the cabinet body.

2. The electromagnetic interference resistant test structure for a flat flexible cable according to claim 1, wherein, The cabinet body is made of copper. 3.The electromagnetic interference resistant test structure of a flat flexible cable according to claim 2, wherein, The detection jig further comprises two vertical quick clamps, and the two vertical quick clamps are arranged on the two sides of the base plate, respectively.

4. The electromagnetic interference resistant test structure of claim 3, wherein, Each vertical quick clamp comprises a clamp seat, a pressing arm, a handle, a pressing head, and a connecting rod.

5. The electromagnetic interference resistant test structure for FFC flat flexible cable of claim 4, wherein, The clamp seat is fixed to the base plate, one side of the pressing arm is hingedly connected to the clamp seat, the pressing head is fixed to the other side of the pressing arm, one side of the handle is hingedly connected to the clamp seat, the hinge connection position of the handle on the clamp seat is away from the hinge connection position of the pressing arm, one end of the connecting rod is hingedly connected to the handle, and the other end of the connecting rod is hingedly connected to the pressing arm.

Images