Flexible circuit connection device

Abstract

The invention provides a flexible circuit connection device, and relates to the field of signal transmission of electronic systems. The flexible circuit connection device comprises a flexible connection device and rigid printed boards, wherein the rigid printed boards are fixedly arranged at two ends of the flexible connection device; two ends of the flexible connection device penetrate into the rigid printed boards along the axial direction respectively; the rigid printed board at one end is fixed on the bottom surface of an external connector in parallel; and a structure gasket is fixed on the connected part of the rigid printed board at the other end and the flexible connection device, so that the condition that the rigid printed boards are kept in a horizontal state along the bottom surface of the structure gasket is achieved. According to the flexible circuit connection device, the impedance matching and continuity are better; the high-speed signal transmission performance is more excellent; various performance indexes meet the design requirements; meanwhile, a lot of equipment space and weight occupation is reduced; the reliability risk caused by a cable interconnection mode is greatly avoided; and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the field of electronic system signal transmission, in particular to a flexible circuit connection device. Background technique [0002] System interconnection is a problem that will be faced in various electronic system designs. The traditional cable plus connector interconnection method is widely used in the past electronic system design, such as figure 1 As shown, the reliability, space occupation, weight index and impedance characteristics of the interconnection system design using soldering or crimping have great problems; no matter the soldering connection system or the crimping connection system, the primary problem is a large amount of space. Occupy, if only transmit power and other energy, the cables used are basically common cables, the thickness of the outer protective layer is much larger than the thickness of the effective transmission medium inside, most of the space is occupied by invalid equipment, However, if ...

AI Technical Summary

Problems solved by technology

The welding connection system needs to use various solders to connect the cables and connectors. The addition of non-uniform materials makes the impedance control difficult to be consistent and continuous. Impedance jumps will inevitably occur, which seriously affects the signal quality. Although the crimping connection system No additional soldering material is used, but the mechanical force crimping will damage the connecting core plating and outer protective layer of cables and connectors, and additional oxidation and corrosion will inevitably occur during long-term use in different environments, resulting in circuit breakers. The change of resistance and impedance will degrade the signal quality. At the same time, the crimp connection system is connected by physical pressure due to the different materials of its physical structure size. The impedance inconsistency still exists when transmitting high-speed signals, which affects the signal quality.

If the welding and crimping connection system does not use glue sealing, in the long-term use of the system, due to the influence of the external environment and the long-term accumulation of stress at the welding point (or crimping point), the performance of the connection system will gradually decline, affecting signal and energy transmission Quality, and even serious consequences such as signal interruption, resulting in electronic systems not working properly

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