CN109754924B - High-impedance cable for connector - Google Patents
High-impedance cable for connector Download PDFInfo
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- CN109754924B CN109754924B CN201910186708.3A CN201910186708A CN109754924B CN 109754924 B CN109754924 B CN 109754924B CN 201910186708 A CN201910186708 A CN 201910186708A CN 109754924 B CN109754924 B CN 109754924B
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Abstract
The invention discloses a high-impedance cable for a connector, which comprises an inner core for transmitting an electric signal and a protective layer coated on the inner core, wherein the protective layer comprises a shielding layer, an inner insulating layer and an outer insulating layer which are sequentially arranged; the inner peripheral wall of the outer insulating layer is provided with a first spiral groove, the outer peripheral wall of the inner insulating layer is provided with a second spiral groove, and the first spiral groove and the second spiral groove have the same cross section groove shape and are conical curves; the outer insulating layer forms an inner bulge through the first spiral groove, and the inner insulating layer forms an outer bulge through the second spiral groove. The invention discloses a method for improving the bending resistance and tensile strength of a cable and prolonging the service life of the cable by changing the structure of the cable.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a cable for a high-impedance connector.
Background
The connector is a functional element which makes a circuit be connected, disconnected or switched by means of the action of electric signals or mechanical force, and transmits electric signals or electronic energy, so that the connector can be found in places where electronic systems exist, and in a large-scale electronic system, thousands of connectors are often required, and the connector is one of key elements for ensuring the normal operation and safe operation of various electronic systems. The general connectors are connected through short cables, the cables are mainly used for transmitting electric signals, the normal work of the system is influenced by the quality of the cables, the cables need to be kept in good flexibility under the condition of bearing certain stress so as to be used in a complex space, meanwhile, the cables with good flexibility can prevent the breakage probability at the bending position, and further the service life of the cables is prolonged.
Disclosure of Invention
In view of the above technical shortcomings, the present invention provides a cable for a high-resistance connector, which has improved bending resistance and tensile strength and prolonged service life by changing the structure of the cable.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a high-impedance cable for a connector, which comprises an inner core for transmitting an electric signal and a protective layer for coating the inner core, wherein the protective layer comprises a shielding layer, an inner insulating layer and an outer insulating layer which are sequentially arranged from inside to outside; the inner peripheral wall of the outer insulating layer is provided with a first spiral groove, the outer peripheral wall of the inner insulating layer is provided with a second spiral groove, and the first spiral groove and the second spiral groove have the same cross section groove shape and are conical curves; the outer insulating layer forms an outer bulge through the first spiral groove, and the inner insulating layer forms an inner bulge through the second spiral groove; the outer bulge and the inner bulge are respectively and correspondingly arranged in the second spiral groove and the first spiral groove.
Preferably, the conic section is one of an ellipse, a parabola and a hyperbola.
Preferably, the pitches of the corresponding spiral lines of the first spiral groove and the second spiral groove are the same as the opening width of the conical curve; when the outer insulating layer is screwed on the inner insulating layer, the end part of the inner bulge is tightly attached to the groove bottom of the first spiral groove, the end part of the outer bulge is tightly attached to the groove bottom of the second spiral groove, and a gap k is formed between the inner bulge and the outer bulge.
Preferably, the groove depth of the first and second spiral grooves is smaller than the opening width of the conical curve.
Preferably, the outer insulating layer and the inner insulating layer are made of the same material and are made of insulating rubber, and the thickness of the outer insulating layer and the thickness of the inner insulating layer are both greater than twice of the depth of the first spiral groove.
Preferably, the shielding layer is made of a metal material.
Preferably, the first spiral groove and the second spiral groove are coated with a fluorescent material.
The invention has the beneficial effects that: (1) the single-layer protective layer of the traditional cable is optimized into the inner and outer insulating layers, so that a layer of buffer is arranged between the inner core and the outermost layer of the cable, the outermost outer insulating layer firstly acts on the inner insulating layer when being subjected to external force, direct action on the inner core is avoided, and the protection of the inner core is further improved.
(2) The mode that interior insulating layer passes through the helicla flute realizes the cooperation, has improved on the one hand between the two at ascending tensile strength in the axial, and on the other hand is through this kind of spiral cooperation for interior insulating layer has certain circumferential direction space, makes the cable have torsional buffering space, and then has improved the torsion strength of cable in week.
(3) According to the invention, the spiral groove is in a conical curve structure, so that the inner and outer insulating layers are tightly attached and have gaps, when the cable is bent, the inner and outer bulges are provided with certain buffer spaces in the spiral groove, the stress concentration caused by direct contact extrusion of the inner and outer bulges is avoided, the flexibility of the cable is improved, and the bending strength of the cable is further improved.
(4) In addition, the gap between the inner insulating layer and the outer insulating layer is utilized to ensure that a certain buffer space is formed when the cable is twisted, so that the torsional strength of the cable is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cable for a high-impedance connector according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a cable for a high-resistance connector according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a schematic view of the structure of an inner insulating layer;
FIG. 6 is a schematic structural diagram of an outer insulating layer.
Description of reference numerals: 1-outer insulating layer, 11-first spiral groove, 12-outer bulge, 2-inner insulating layer, 21-second spiral groove, 22-inner bulge, 3-shielding layer and 4-inner core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 and 2, a high-impedance cable for a connector includes an inner core 4 for transmitting an electrical signal and a protective layer coated on the inner core 4, the protective layer includes a shielding layer 3, an inner insulating layer 2 and an outer insulating layer 1, which are sequentially disposed from inside to outside, the shielding layer 3 is coated on the inner core 4 and is made of a metal material (woven copper mesh or copper (aluminum) platinum), and the inner insulating layer 2 and the outer insulating layer 3 are made of the same material and are made of insulating rubber; the inner peripheral wall of the outer insulating layer 1 is provided with a first spiral groove 11, the outer peripheral wall of the inner insulating layer 2 is provided with a second spiral groove 21, the first spiral groove 11 and the second spiral groove 21 have the same cross section groove shape and are both conical curves, wherein the conical curves are one of ellipses, parabolas and hyperbolas (in the embodiment, the conical curves are hyperbolas, and in addition, it needs to be noted that the conical curves in the application are all parts of ellipses, parabolas and hyperbolas and are not complete ellipses, parabolas or hyperbolas); the outer insulation layer 1 and the inner insulation layer 2 form an outer bulge 12 and an inner bulge 22 respectively through a first spiral groove 11 and a second spiral groove 21 which are formed;
further, referring to fig. 3, L is the opening width of the conic curve, H is the groove depth of the first spiral groove 11 (also the groove depth of the second spiral groove 21), the pitch of the spiral lines corresponding to the first spiral groove 11 and the second spiral groove 21 is the same as the opening width H of the conic curve, the groove depth H of the first spiral groove 11 (also the second spiral groove 21) is smaller than the opening width L of the conic curve, and the thicknesses of the outer insulating layer 1 and the inner insulating layer 2 are both greater than twice the groove depth H of the first spiral groove 11; when the outer insulation layer 1 is screwed onto the inner insulation layer 2, the inner protrusion 22 abuts against the groove bottom of the first spiral groove 11 (e.g., at point b or point c), the outer protrusion 12 abuts against the groove bottom of the second spiral groove 21 (e.g., at point a), and a gap k is formed between the inner protrusion 22 and the outer protrusion 12.
Furthermore, the first spiral groove 11 and the second spiral groove 12 are coated with fluorescent materials, so that when the outer insulating layer 1 is broken, inspection in use is facilitated.
As shown in FIGS. 3 and 4, Fz in FIG. 3 represents an axial force (referring to the axial direction of the inner core 4, which is generated when the cable is pulled, i.e., tensile force), Fw in FIG. 4 represents a bending force (when the cable is bent), d1、d2、e1、e2、f1、f2Are all the intersection points of the protrusions and the groove bottoms, J1…5And j1…5Represents an arrow;
referring to fig. 3, when the cable is under a pulling force (i.e. an axial force Fz), because the inner insulating layer 2 and the outer insulating layer 1 are subjected to different resistances, they tend to move relatively, for convenience of description, in this embodiment, it is specified that the inner insulating layer 2 moves towards the left, and by using the existence of the gap k, the inner protrusion 22 on the inner insulating layer 2 moves towards the left and is blocked by the first spiral groove 11 so that the inner protrusion 22 tilts towards the right, and the outer protrusion 12 on the outer insulating layer 1 moves towards the right (relative to the inner insulating layer 2) and is blocked by the second spiral groove 21 so that the outer protrusion 12 tilts towards the left, that is, when the cable is under the axial force Fz, the inner and outer insulating layers both have a certain buffering distance by using the existence of the gap k and the effect of the protrusion, thereby increasing the tensile strength;
in connection with fig. 4, for convenience of description, the cable is only described in the present embodiment with respect to a partial protrusion and a partial spiral groove, i.e. at d, when the cable is subjected to a bending (i.e. bending force Fw)1And d2Bending the part; as shown in fig. 4, when the bending force is downward, the outer insulating layer 1 in the upper half is bent by the existence of the gap k, and the first spiral groove 11 in this portion receives a pressing force to generate a contraction tendency (the contraction direction is indicated by an arrow J)1And arrow J2) So that the outer protrusion 12 is at point e1And point f1Follows the relative movement (i.e. arrow J)3And arrow J4In the direction of (d), the inner projection 22 of that portion will come to point d1Where it produces a riseTrend (arrow J)5Direction); the arrow J is obstructed by the first helical groove 115The rising of the second spiral groove 21 obstructs the arrow J3And arrow J4The outer bulge 12 is inclined, and finally the upper half bulge forms a gap k in the spiral groove for multi-point support utilization, so that acting force is offset, stress concentration is avoided, and a buffering effect is formed;
further, the lower half of the outer insulating layer 1 of FIG. 4 is bent to promote the outer protrusion 12 at the point d2Is rising (arrow j)5Direction) that the inner insulating layer 2 is bent to cause the second spiral groove 21 to contract (contraction direction is arrow j)1And arrow j2) Thereby causing the inner protrusion 22 to protrude at point e2And point f2Follows the relative movement (i.e. arrow j)3And arrow j4Direction (d); by the second helical groove 21, j is hindered5The rising of the first spiral groove 11 obstructs the arrow j3And arrow j4The inner lobes 22 are caused to tilt and eventually the lobes of the lower half form a multi-point support within the helical groove, also creating a cushion in the lower half.
Furthermore, with reference to fig. 3 and 4, when other forces, such as twisting force, are applied, on one hand, the spiral groove is utilized to enable the inner and outer insulating layers to have a certain circumferential rotation space, on the other hand, the inner and outer insulating layers can generate relative extrusion during twisting, and the protrusions are utilized to form multi-point support and the gap k in the spiral groove to form buffering, so as to improve the strength of the cable,
in addition when the cable atress leads to outer insulating layer 1 fracture, and when inner insulating layer 2 was intact, need not be like traditional cable whole change this moment, only need change outer insulating layer alone can (utilize the helicla flute can be with outer insulating layer 1 revolve on inner insulating layer 2), can realize the effect of saving cost to a certain extent, inner insulating layer 2 also plays the transition effect simultaneously, directly acts on inner core 4 when avoiding outer insulating layer 1 atress.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A high-impedance cable for a connector comprises an inner core (4) for transmitting an electric signal and a protective layer for coating the inner core (4), and is characterized in that the protective layer comprises a shielding layer (3), an inner insulating layer (2) and an outer insulating layer (1) which are sequentially arranged from inside to outside; a first spiral groove (11) is formed in the inner peripheral wall of the outer insulating layer (1), a second spiral groove (21) is formed in the outer peripheral wall of the inner insulating layer (2), and the first spiral groove (11) and the second spiral groove (21) are identical in cross section groove shape and are conical curves; the outer insulating layer (1) forms an outer bulge (12) through the opened first spiral groove (11), and the inner insulating layer (2) forms an inner bulge (22) through the opened second spiral groove (21); the outer bulge (12) and the inner bulge (22) are respectively and correspondingly arranged in the second spiral groove (21) and the first spiral groove (11);
the screw pitches of the corresponding spiral lines of the first spiral groove (11) and the second spiral groove (21) are the same as the opening width of the conical curve; when the outer insulating layer (1) is screwed on the inner insulating layer (2), the end part of the inner bulge (22) is tightly attached to the groove bottom of the first spiral groove (11), the end part of the outer bulge (12) is tightly attached to the groove bottom of the second spiral groove (21), and a gap k is formed between the inner bulge (22) and the outer bulge (12).
2. The cable for a high-impedance connector of claim 1, wherein the conic section is one of an ellipse, a parabola and a hyperbola.
3. A high-resistance type cable for connector according to claim 2, wherein the groove depth of said first spiral groove (11) and said second spiral groove (21) is smaller than the opening width of said conical curve.
4. A high-impedance cable for connector according to claim 2 or 3, wherein the material of the outer insulating layer (1) and the material of the inner insulating layer (2) are the same and are both insulating rubber, and the thickness of the outer insulating layer (1) and the thickness of the inner insulating layer (2) are both greater than twice the depth of the first spiral groove (11).
5. A high-impedance cable for connectors according to claim 4, wherein said shielding layer (3) is made of metal.
6. The high-resistance cable for connectors according to claim 4, wherein said first spiral groove (11) and said second spiral groove (21) are coated with a fluorescent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186708.3A CN109754924B (en) | 2019-03-13 | 2019-03-13 | High-impedance cable for connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186708.3A CN109754924B (en) | 2019-03-13 | 2019-03-13 | High-impedance cable for connector |
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| Publication Number | Publication Date |
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| CN109754924A CN109754924A (en) | 2019-05-14 |
| CN109754924B true CN109754924B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910186708.3A Active CN109754924B (en) | 2019-03-13 | 2019-03-13 | High-impedance cable for connector |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634614B (en) * | 2019-10-30 | 2020-12-01 | 江苏亨通线缆科技有限公司 | Photoelectric composite cable for 5G base station |
| CN111599529B (en) * | 2020-05-20 | 2022-04-29 | 深圳市速联技术有限公司 | Coaxial line structure and production process thereof |
| CN112327440B (en) * | 2020-11-27 | 2022-12-09 | 安徽长荣光纤光缆科技有限公司 | High-strength extrusion-resistant composite optical cable |
| CN112415693B (en) * | 2020-12-16 | 2022-10-11 | 安徽长荣光纤光缆科技有限公司 | Armored butterfly-shaped communication optical cable |
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| CN101796312A (en) * | 2007-06-18 | 2010-08-04 | 生物技术研究所I+D有限公司 | Have being threaded of variable gap |
| CN201741434U (en) * | 2010-07-26 | 2011-02-09 | 苏州宝兴电线电缆有限公司 | Multi-core cable with sheath extruded twice |
| CN103097813A (en) * | 2010-07-09 | 2013-05-08 | Tp24有限公司 | Low voltage rigid cable |
| JP2014130690A (en) * | 2012-12-28 | 2014-07-10 | Furukawa Electric Co Ltd:The | Terminal structure of wire, and method of forming the same |
| CN207068531U (en) * | 2017-06-22 | 2018-03-02 | 东莞市盛鹏电子有限公司 | A kind of waterproof power line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208364063U (en) * | 2018-06-21 | 2019-01-11 | 上海海隆石油管材研究所 | A kind of screw connection structure |
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- 2019-03-13 CN CN201910186708.3A patent/CN109754924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796312A (en) * | 2007-06-18 | 2010-08-04 | 生物技术研究所I+D有限公司 | Have being threaded of variable gap |
| CN103097813A (en) * | 2010-07-09 | 2013-05-08 | Tp24有限公司 | Low voltage rigid cable |
| CN201741434U (en) * | 2010-07-26 | 2011-02-09 | 苏州宝兴电线电缆有限公司 | Multi-core cable with sheath extruded twice |
| JP2014130690A (en) * | 2012-12-28 | 2014-07-10 | Furukawa Electric Co Ltd:The | Terminal structure of wire, and method of forming the same |
| CN207068531U (en) * | 2017-06-22 | 2018-03-02 | 东莞市盛鹏电子有限公司 | A kind of waterproof power line |
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| CN109754924A (en) | 2019-05-14 |
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