Eight-type cable shielding structure
A shielding structure and wire pair technology, applied in conductors, insulated cables, electrical components, etc., can solve the problems of signal peaks, aluminum foils are easy to open, signal distortion, etc., to reduce the probability of signal peaks, ensure integrity, The effect of improving stability
Inactive Publication Date: 2016-03-09
ZHEJIANG ZHAOLONG CABLE
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Problems solved by technology
Due to the longitudinal wrapping structure, there is no external force to fix the aluminum foil after it is formed, so the aluminum foil has a force release after forming, which makes the sealing of the aluminum foil easy to open. When the signal frequency reaches above 1GHz, the wavelength is already quite short. As a result, the joint gap of the shielding layer of the vertical package structure is enough for the signal wavelength above 1GHz to pass through, resulting in signal leakage and signal distortion
The test frequency of CAT8 reaches 2GHz. With the traditional longitudinal wrapping method of aluminum foil wrapping, the signal wavelength of 2GHz is enough to pass through the joint of the aluminum foil under the longitudinal wrapping method, resulting in signal leakage and signal spikes.
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[0016] Combine below figure 1 and figure 2 Specific description embodiment:
[0017] Such as figure 1 and figure 2 As shown, the eight types of wire shielding structure, the eight types of wire shielding structure includes four groups of wire pairs 1, the four groups of wire pairs 1 are distributed in a twisted structure, and each group of wire pairs 1 includes two single-wire conductors 2. Each single-wire conductor 2 is wrapped with an insulating layer 3, and the outside of each group of wire pairs 1 is wrapped with aluminum foil 4, so that the aluminum foil 4 is wrapped along the twisted structure of the wire pair 1, and the outside of the aluminum foil 4 A layer of hot-melt aluminum foil tape 5 is added; the four groups of wire pairs 1 are wrapped by a braiding layer 6 , and a layer of sheath 7 is provided outside the braiding layer 6 .
[0018] Preferably, the insulating layer 3 includes an inner layer 31, an intermediate layer 32 and an outer layer 33, the inner la...
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The invention belongs to the technical field of cable appliances and particularly relates to an eight-type cable shielding structure. The invention discloses the eight-type cable shielding structure. The eight-type cable shielding structure comprises four groups of cable pairs, wherein the four groups of cable pairs are distributed in a pair twist structure; each group of cable pairs comprises two single wire conductors; each single wire conductor is wrapped with an insulation layer; each group of cable pairs are wrapped with aluminum foil in a lapping manner, so that the aluminum foil wraps the cable pairs along the pair twist structure of the cable pairs; a layer of hot melt aluminum foil belt is additionally arranged outside the aluminum foil; the four groups of cable pairs are wrapped with a knitting layer; and a layer of sheath is arranged outside the knitting layer. The eight-type cable shielding structure has the beneficial effects that the completeness of signals is ensured; the anti-electromagnetic interference effect is maximized; and the aluminum foil is clung to the cable pairs more closely, so that the stability of a cable pair structure is improved and the probability of signal peak generation is reduced.
Description
technical field [0001] The invention belongs to the technical field of cable appliances, in particular to an eight-category wire shielding structure. Background technique [0002] In conventional wire-pair shielded cables, the aluminum foil shielding method is generally longitudinal wrapping, but this structural design is suitable for products below 1GHz. Due to the longitudinal wrapping structure, there is no external force to fix the aluminum foil after it is formed, so the aluminum foil has a force release after forming, which makes the sealing of the aluminum foil easy to open. When the signal frequency reaches above 1GHz, the wavelength is already quite short. As a result, the joint gap of the shielding layer of the vertical package structure is enough for the signal wavelength above 1GHz to pass through, resulting in signal leakage and signal distortion. The CAT8 test frequency reaches 2GHz. With the traditional vertical wrapping method of aluminum foil wrapping, the ...
Claims
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IPC IPC(8): H01B11/06H01B7/02H01B7/17
CPCH01B11/10H01B7/0225H01B7/17H01B11/1016
Inventor 姚金龙王甫柱倪冬华叶国强王德全姚云翔
Owner ZHEJIANG ZHAOLONG CABLE