TWI398064B - Small-diameter coaxial cable harness and connecting structure - Google Patents

Description

Thin-diameter coaxial cable harness and its connection structure

The present invention relates to a wire harness for bundling a plurality of small-diameter coaxial cables and a splicing structure thereof.

In a precision small device such as a mobile phone terminal, a small camera, or a notebook computer, a circuit board in a casing that can be slidably or rotatably coupled to each other is connected by a wiring material. Japanese Laid-Open Patent Publication No. 2006-344813 discloses a precision small-sized device using a flexible wiring board in which a waterproof member is insert-molded as a wiring material, and sealing the frame through which the wiring board is inserted by a waterproof member. hole.

However, the flexible wiring board has a drawback that it is not easy to reduce the bending radius and the signal line is easily broken due to repeated bending. On the other hand, the bundle of the bundled coaxial cable not only reduces the bending radius, but also has a strong tolerance to repeated bending. In addition, the fine coaxial cable has good noise characteristics and enables stable signal transmission. However, since the cross-sectional shape of the coaxial cable harness is indefinite, there is a gap between the coaxial cables, so it is difficult to waterproof the through-hole of the casing. Further, when the bundled coaxial cable is covered for waterproofing, the covered portion cannot smoothly slide between the sliding frames, and is easily caught.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2006-344813

The present invention provides a narrow-diameter coaxial cable harness and a splicing structure thereof, which are connected between two circuit substrates in a casing that can be detachably obtained with good waterproofness.

In order to solve the above problems, a wire harness is provided, which is a small-diameter coaxial cable harness between two frames which can be changed in positional relationship, and includes a bundle portion for binding a plurality of small-diameter coaxial cables. The wire and the waterproof portion are watertightly attached to the two portions of the binding portion, and are watertightly attached to the frame.

In a first aspect of the invention, the binding portion includes a waterproof tube that wraps around the plurality of narrow-diameter coaxial cables between the waterproof portions and is watertightly assembled with the waterproof portion. In this case, it is preferable that the waterproof portion is watertightly attached to the waterproof tube by caulking with a metal or a heat shrinkable resin. Further, it is preferable that the waterproof portion is watertightly attached to the waterproof tube by pressing the waterproof portion into the waterproof tube.

In a second aspect of the invention, the binding portion includes a waterproof tape that is wrapped around the plurality of small diameter coaxial cables in a watertight manner. In this case, it is preferable that the waterproof portion is provided with a supporting member that is watertightly attached to the binding portion that is inserted through the inner side by caulking, and that is elastically supported when being in close contact with the frame. The reaction of deformation. Further, it is preferable that the waterproof tape is wound into a plurality of layers while changing the winding direction.

In either of the first and second aspects of the invention, it is preferable that the bundle portion is inserted into a cylindrical sleeve which is woven or knitted by synthetic fibers. In this case, it is preferred to form a monofilament synthetic fiber composed of a molten liquid crystalline polymer and a bendable polymer in a sleeve system. Further, it is preferred to warp the synthetic fibers with a sleeve. Further, it is preferable that a connector is provided at at least one end of the coaxial cable harness.

In addition, a splicing structure of a small-diameter coaxial cable harness is provided, and a thin-diameter coaxial cable harness of the present invention is disposed between two frames, and is installed at a portion of the narrow-coaxial coaxial cable harness that is introduced into the frame. There is a waterproof department.

According to the narrow-coaxial coaxial cable harness of the present invention, the fine coaxial cable in which water does not infiltrate from the bundle portion. In addition, when the harness is mounted on the casing, the watertight portion that is watertight to the binding portion is watertightly attached to the casing by the portion where the casing is introduced, so that the water does not permeate. The wire harness penetrates into the frame. Therefore, the waterproofness of the frame can be ensured, and the frame can be connected between the frames by the wire harness.

In the following embodiments of the present invention, description will be made with reference to the drawings. The drawings are for illustrative purposes and are not intended to limit the scope of the invention. In the drawings, the same symbols indicate the same parts in order to avoid the repeated description. The size ratio in the schema is not necessarily correct.

Fig. 1 is a perspective view showing the foldable mobile phone terminal 3. Fig. 2 is a perspective view showing the slide type mobile phone terminal 3A, wherein (A) shows an extended state and (B) shows an overlapped state. The narrow-coaxial coaxial cable harness of the present invention is, for example, connected between the casing 1 of the mobile phone terminal 3 and the casing 2, or between the casing 1A of the mobile telephone terminal 3A and the casing 2A.

In the mobile phone terminal 3, the end portions of the first housing 1 and the second housing 2 are rotatably coupled by a hinge 4. The first frame body 1 and the second frame body 2 have cable insertion holes 5 and 6 at the end faces on the connection side, respectively, and the respective ends of the small-diameter coaxial cable harness 11 are introduced into the first frame from the holes 5 and 6. Inside the body 1 and the second frame 2. Further, the hinge 4 has a through hole 4a, and the wire harness 11 is inserted into the through hole 4a.

Fig. 3 is a conceptual diagram of a small-diameter coaxial cable harness 11 according to an embodiment of the present invention. The wire harness 11 has a plurality of (20 to 60) narrow-diameter coaxial cables 12, and the intermediate portion of the cable 12 is bundled. In the present specification, the bundled portion is referred to as the binding portion 10. Each of the cables 12 has a center conductor, an internal insulator, an outer conductor, and a surface layer from the center toward the outside. At the end of each of the cables 12, terminal processing is performed such that the outer conductor, the inner insulator, and the center conductor are exposed in a stepped shape to a predetermined length, and the connector 13 is mounted. The connector 13 is connected to the wiring board in the first housing 1 and the second housing 2 of the mobile phone terminal 3. Further, the wire harness 11 may include a small-diameter insulated cable having no external conductor in addition to the plurality of small-diameter coaxial cables 12.

The cable 12 in the present invention is a coaxial cable which is thinner than the AWG 40 according to the specifications of the American Wire Gauge. Further, it is preferable to use a very thin coaxial cable which is thinner than the AWG 44. Thereby, the wire harness 11 is easily bent, and the resistance when the first frame body 1 and the second frame body 2 rotate or slide relative to each other can be reduced. Further, the diameter of the binding portion 10 can be reduced, and high-density wiring can be performed in a limited wiring space.

When the cable 12 is the thickness of the AWG 46, the bundle portion 10 of the wire harness 11 can be bent into a U shape having a width of 5 mm to 10 mm. Although the width of the U-shape is increased by the increase in the number of the cables 12, even if the cable 12 of 60 AWGs 44 is bundled, the width can be within 12 mm.

(First embodiment)

Fig. 4 is a plan view showing a state in which the narrow coaxial cable harness 11A according to the first embodiment of the present invention and a splicing structure using the harness are half-cut. The wire harness 11A has a binding portion 10 in which the small-diameter coaxial cable 12 is inserted into the waterproof tube 21. One of the waterproof tubes 21 is partially inserted into the through hole 4a of the hinge 4 of the mobile phone terminal. The tube 21 is formed, for example, of a soft resin such as fluororesin, polyolefin or silicone, or a porous body thereof. Waterproof portions 23 are provided at both ends of the tube 21.

The waterproof portion 23 is composed of a sealing cover 22 and an O-ring. The sealing cover 22 is formed by, for example, a hard resin such as ABS, and the cable 12 is inserted through the insertion hole 24 formed at the center thereof. The seal cap 22 has a disk-shaped flange portion 25 that protrudes outward in the radial direction, and an O-ring seal 26 made of silicone or the like is attached to the outer peripheral portion of the flange portion 25.

Further, the seal cap 22 has a cylindrical portion 27 that protrudes from one surface side of the flange portion 25, and the cylindrical portion 27 is inserted into the tube 21. A caulking member 28 is attached to a portion of the tube 21 into which the cylindrical portion 27 is inserted. The rivet member 28 is formed, for example, of a spring steel sheet. The tube 21 is crimped to the cylindrical portion 27 of the sealing cover 22 by the caulking member 28. Since the waterproof tube 21 has a tubular shape and the unevenness of the surface is small (may be several tens of μm or less), there is no gap between the tube 21 and the waterproof portion 23, and both of them can be connected in a watertight manner.

The wire harness 11A of the above-described structure is inserted into each of the connectors 13 at both end portions through the cable insertion hole 5 of the first frame 1 and the cable insertion hole 6 of the second frame 2 in vivo. Further, an O-ring 26 constituting the waterproof portion 23 is fitted into the recesses 7 and 8 formed in the end faces of the respective frames. Thereby, the O-ring 26 is in close contact with the inner peripheral faces 7a, 8a of the recesses 7, 8 and the seal cap 22, and the watertightness between each frame and the seal cover 22 is made.

The surface of the seal cap 22 opposite to the cylindrical portion 27 of the flange portion 25 is adhered and fixed to each of the frames 1 and 2 by an adhesive member 29. As the adhesive material 29, a resin or a double-sided adhesive tape can be used. It is preferable that the adhesive material 29 has water repellency, and in this case, the O-ring seal 26 is added to further improve the water repellency. For example, when the sealing cover 22 is transparent, the ultraviolet curable resin is disposed between the sealing cover 22 and each of the frames 2, and ultraviolet rays are irradiated from the outside of the sealing cover 22, whereby watertight bonding can be obtained in a short time.

To manufacture the small-diameter coaxial cable harness 11A, the small-diameter coaxial cable harness 11 (Fig. 3) of the connector 13 is connected to the insertion tube 21 at both ends. Then, the sealing cover 22 is inserted from both ends, and the sealing cover 22 is swaged by the caulking member 28 to be connected to the tube 21. Moreover, the O-ring 26 is attached to the outer periphery of the flange part 25 of the sealing cover 22, and the waterproof part 23 is comprised. (Here, if there is a case where it is not easy to insert the connector 13 through the tube 21 or the sealing cover 22, a plurality of cables 12 are inserted into the tube 21 or the sealing cover 22 before the connector is mounted, and then the connector 13 is inserted. It can also be installed at the end of the cable 12.)

The wire harness 11A to which the waterproof portion 23 is attached is attached to the first housing 1 and the second housing 2 constituting the mobile phone terminal 3 as follows. The connector 13 is inserted into the insertion hole 5 of the first housing 1 or the insertion hole 6 of the second housing 2, and then placed in the housing. The sealing cover 22 to which the O-ring 26 is attached is fitted into the recess 7 of the first housing 1 or the recess 8 of the second housing 2, and the sealing cover 22 and the housing are watertight by the O-ring 26 Sexually continue. The wire harness 11A can be easily connected to the wiring board or the like in the first housing 1 and the second housing 2 by the connectors 13 at both ends.

The binding portion 10 and the waterproof portion 23 have a waterproof structure, and since the waterproof portion 23 is water-tightly attached to the first housing 1 and the second housing 2, the water is not in the first housing 1 and the second housing. Since the body 2 penetrates into the first frame 1 or the second frame 2 through the wire harness, the small-diameter coaxial cable harness 11A of the first embodiment can exhibit a waterproof function. Thereby, in addition to obtaining good waterproofness and reducing the bending radius, the first housing 1 and the second housing 2 can be continued by the wire harness 11A which is advantageous for repeated bending. In addition, since the cable 12 has good shielding properties and good noise characteristics, stable signal transmission can be performed.

Further, the caulking member 28 is formed of a heat-shrinkable resin (for example, polyolefin), and the end portion of the tube 21 and the cylindrical portion 27 of the sealing cover 22 are watertightly connected by thermally shrinking the caulking member 28. . Further, the end portion of the tube 21 and the cylindrical portion 27 of the seal cap 22 may be watertightly joined by being bundled by the caulking member 28 formed of the strap.

Alternatively, the cylindrical portion 27 of the sealing cover 22 is pressed into the end portion of the tube 21, and the tube 21 is adhered to the outer periphery of the sealing cover 22, and the sealing cover 22 and the tube 21 may be watertightly connected. In the case where the tube 21 is a material similar to silicone and having a reducing force from the elongation direction, if the outer diameter of the cylindrical portion 27 is made larger than the inner diameter of the tube 21, the reducing force of the tube 21 can be obtained. The seal of the sealing cover 22 is efficient. Further, the tube 21 itself is formed of a heat-shrinkable resin (for example, a polyolefin or the like), and at least both ends of the tube 21 are heat-shrinked after the cylindrical portion 27 of the sealing cap 22 is fitted to both end portions of the tube 21. The end portion of the tube 21 may be connected to the cylindrical portion 27 of the sealing cover 22 in a watertight manner.

Further, the binding portion 10 between the sealing covers 22 is not subjected to a water repellent treatment, and an adhesive is filled on the inner peripheral side of the sealing cover 22 so that the sealing cover 22 and the binding portion 10 are integrated while being filled with an adhesive. The gap between the respective cables 12 in the insertion hole 24 of the sealing cover 22 may be configured to prevent water from penetrating into the casing from the portion into which the wire harness 11A is introduced into the casing. As the adhesive, a temperature-curable resin, a thermosetting resin, or an ultraviolet curable resin can be used.

(Second embodiment)

Fig. 5 is a plan view showing a state in which the small-diameter coaxial cable harness 11B according to the second embodiment of the present invention and the splicing structure using the harness are half-cut. The binding portion 10 of the wire harness 11B is formed by winding the waterproof tape 35 around the plurality of small-diameter coaxial cables 12 in a watertight manner. One of the binding portions 10 is partially inserted through the through hole 4a formed in the hinge 4 of the mobile phone terminal. The waterproof tape 35 is a water-impermeable tape, and is formed of, for example, a water-repellent soft resin such as PTFE (polytetrafluoroethylene). In the waterproof tape 35, an adhesive layer may be provided on the inner surface of the winding.

The waterproof tape 35 is wound around the plurality of cables 12 in a spiral shape and partially overlapped state. Since the waterproof tape 35 itself has water repellency, water does not penetrate into the inner side of the waterproof tape 35 even if the overlapping portion is not adhered. In the case of winding one layer (one turn) of the waterproof tape 35, the width of the overlapping portion can be made to be about 1/2 to 3/4 of the bandwidth.

Fig. 6 is a plan view showing a wound state of the waterproof tape in the small-diameter coaxial cable harness 11B. In a state where the wire harness 11B is excessively bent, a shearing force is generated in a direction perpendicular to the direction in which the tape is overlapped, and a gap is formed between the waterproof tapes 35. In the case where the waterproof tape 35 of two or more layers (two turns) or more is wound, the spiral directions in which the inner layer 35a and the outer layer 35b are wound may be opposite to each other. Thereby, the waterproof tape of the outer layer 35b tightens the waterproof tape of the inner layer 35a and thus counteracts the shearing force generated by the waterproof tape of the inner layer 35a. Therefore, the bending radius of the wire harness 11B can be reduced while maintaining the waterproofness. When the two-layer waterproof tape 35 is wound, in the portion where the binding portion 10 is bent, not only the waterproof tape of the inner layer 35a does not float, but also the waterproof property is further ensured. In the case where the waterproof tape 35 of three or more layers is wound, the winding direction can be changed for each layer.

As shown in Fig. 5, a seal ring 30 is attached to the outer periphery of both end portions of the binding portion 10, and the seal ring 30 is made of a flexible soft resin (for example, silicone). The seal ring 30 is inserted into the binding portion 10 formed of the waterproof tape 35 at the insertion hole 34 formed at the center thereof. The inner diameter of the insertion hole 34 is smaller than the outer diameter of the binding portion 10, and the binding portion 10 is pressed into the insertion hole 34.

The seal ring 30 has a disk-shaped flange portion 31 that protrudes outward in the radial direction. A support ring 33 is attached to the inner diameter side of the flange portion 31, and the support ring 33 serves as a support member for supporting the reaction force of the elastic deformation when the flange portion 31 is pressed and elastically deformed from the radially outer side. The support ring 33 is formed of a metal or a hard resin having a higher rigidity than the seal ring 30. Further, the support ring 33 is built into the seal ring 30, and may be attached to the inner circumference of the seal ring 30 by other members.

Further, a caulking member 32 is attached to both axial sides of the flange portion 31 on the outer circumference of the seal ring 30. The caulking member 32 can be the same as the caulking member 28 in the place where the small-diameter coaxial cable harness 11A is described in the first embodiment. The seal ring 30, the swaging member 32, and the support ring 33 constitute the waterproof portion 23 of the wire harness 11B.

Each of the connectors 13 at both ends of the wire harness 11B is inserted into the cable insertion hole 5 of the first housing 1 and the cable insertion hole 6 of the second housing 2, and is placed in each housing. Further, the seal ring 30 constituting the waterproof portion 23 is fitted into the concave portions 7 and 8 formed on the end faces of the respective frames to prevent water from penetrating into the casing.

The binding portion 10 covered by the waterproof tape 35 is a waterproof structure, and the binding portion 10 is watertightly attached to the seal ring 30 constituting the waterproof portion 23. The small-diameter coaxial cable harness 11B of the second embodiment also exhibits a waterproof function similarly to the small-diameter coaxial cable harness 11A of the first embodiment. Thereby, the bending radius can be reduced while obtaining good water repellency, and the first frame 1 and the second frame 2 can be easily connected by the wire harness 11B which is also advantageous for repeated bending. In addition, since the cable 12 has good shielding properties and good noise characteristics, stable signal transmission can be performed.

In the manufacturing process of the wire harness 11B, the inner cable 12 may be bundled, for example, by braiding the monofilament synthetic fiber into a tubular braided sleeve, or by bundling or threading, before winding the waterproof tape 35. The cable 12 is wound around the inside, and with such a configuration, the smoothness of the heat of the waterproof tape 35 can be achieved.

Further, in the first embodiment and the second embodiment, the cable 12 of the small-diameter coaxial cable harnesses 11A, 11B may be connected to the circuit board directly or through an FPC or the like without the connector 13. The case where the end portion of the small-diameter coaxial cable harness is placed in the casing from the insertion hole of the casing is the same as described above. Further, the small-diameter coaxial cable harnesses 11A, 11B can also be applied without the structure of the hinge 4.

(Third embodiment)

Fig. 7 is a plan view showing a state in which the narrow coaxial cable harness 11C according to the third embodiment of the present invention and the splicing structure using the harness are half-cut. The wire harness 11C is attached to the small diameter coaxial cable harness 11A of the first embodiment to which the sleeve 40 is attached. The waterproof tube 21 is inserted into the tubular sleeve 40, and between the waterproof portions 23, the waterproof tube 21 is covered by the sleeve 40 except for the portion near the waterproof portion. (The position of both ends of the sleeve 40 may be determined such that the sleeve 40 is covered between the waterproof portions 23 at least the portion where the waterproof tube 21 is displaced. The sleeve 40 is formed into a tubular shape by being woven or braided into a synthetic fiber (polymer fiber). Both ends of the sleeve 40 are fixed to the waterproof tube 21 by an adhesive tape 43. The sleeve of the present invention is used to ensure the slidability of the cable harness and its surrounding members (frames, etc.).

In the case where the sleeve 40 is formed of a woven fabric (woven), it is preferred to use a monofilament synthetic fiber composed of a molten liquid crystalline polymer and a bendable polymer as the polymer fiber. The monofilament synthetic fiber is composed of a core component composed of a molten liquid crystalline polymer and a sheath component containing a bendable polymer.

The molten liquid crystalline polymer used for the core component is a polymer which melts liquid crystallinity (melting anisotropy), that is, an optical liquid crystallinity (anisotropy) in a molten phase, and can be used from an aromatic diol or an aromatic compound. A molten liquid crystalline polyester composed of repeating constituent units such as dicarbonic acid or aromatic hydroxycarboxylic acid. The liquid crystal property is melted, for example, by placing the sample on a hot workbench, heating it under a nitrogen atmosphere, and determining the penetration light of the sample. The melting point (MP) of the preferred molten liquid crystalline polyester is 260 ° C to 360 ° C, more preferably 270 ° C to 350 ° C. The melting point is a peak temperature (JISK7121.) of the main endothermic peak observed by differential scanning calorimetry (DSC: for example, manufactured by Mettler Co., Ltd., TA3000).

It is also possible to add polyethylene terephthalate, denatured polyethylene terephthalate, polyolefin, polycarbonate, polyarylate, polyamine, polyphenylene sulfide to the molten liquid crystalline polymer. , polyester ketone, fluororesin thermoplastic polymer. Further, various additives such as an inorganic substance such as titanium oxide, clay, ceria or cerium oxide, a coloring agent such as carbon black, a dye or a pigment, an antioxidant, an ultraviolet absorber, and a light stabilizer may be contained.

The flexible thermoplastic polymer (flexible polymer) used for the sheath component is not particularly limited, and examples thereof include polyolefin, polyamide, polyester, polyarylate, polycarbonate, and polyphenylene sulfide. Polyester ether ketone, fluororesin, and the like. In particular, polyphenylene sulfide (PPS), polyethylene naphthalate, and semi-aromatic polyester decylamine are preferred. Further, the term "flexible polymer" refers to a polymer having no aromatic ring on the primary bond and a polymer having four or more atoms having an aromatic ring on the primary bond and a primary bond between the aromatic rings.

Further, the sheath component is preferably composed of a mixture of a flexible thermoplastic polymer and a molten liquid crystalline polyester, not only by a flexible thermoplastic polymer. In particular, it is preferable to use a curved thermoplastic polymer as a sea component and an island structure in which a liquid crystalline polyester is melted as an island. By using a mixture of a molten liquid crystalline polyester and a flexible polymer (especially an island structure) to form a sheath component, the strength of the sheath component can be increased, and at the same time, the adhesion of the sheath component to the core component can be remarkably improved.

The so-called island structure means that in the fiber cross section, there are tens to hundreds of islands in the sea component of the matrix. The number of islands can be adjusted by changing the mixing ratio of the sea component to the island component, the melting viscosity, and the like. The island structure is obtained by mixing sea components with island components in a sheet form, or by mixing a melt of two components by a static mixer or the like. The composition ratio of the island in the sheath component is set to 0.25 to 0.5 in consideration of the strength and the fibrillation resistance in the cross-sectional ratio (island component/sea component + island component) of the sheath-type synthetic fiber to be produced. good. The island composition ratio can be obtained from a micrograph of the cross section of the fiber, but can also be obtained by the volume ratio of the core component to the discharge amount of the sheath component at the time of manufacture. It is preferable that the diameter of the island component is set to 0.1 to 2 μm.

The liquid crystalline polyester which melts the sheath component can be melted liquid crystalline polyester which is the same as the core component, and these may be the same species or may be heterogeneous. A polymer having a melting point (MP) of a sheath component and a melting point (MP) of +80 ° C or less and MP - 10 ° C or more is preferred. In addition, the sheath component may also contain other polymers and various additives.

The monofilament synthetic fiber constituting the sleeve 40 includes an eccentric core sheath type in addition to the core-sheath type synthetic fiber. The core composition ratio of the synthetic fiber is 0.25 to 0.80, and preferably 0.4 to 0.7. In particular, in the case where the sheath component is composed of a curable thermoplastic polymer and a molten liquid crystalline polyester, the sheath component can also contribute to an increase in strength. Therefore, even when the core component ratio is low, an excellent synthetic fiber having a strength of 15 g/d or more can be obtained. If the core composition ratio is too large, the core portion is easily exposed, and if it is too small, there is insufficient strength. Further, the ratio of the core component is a cross-sectional area ratio (core component / (core component + sheath component)) of the synthetic fiber. The cross-sectional area ratio can be obtained from a micrograph of the fiber cross section. The obtained fiber has a wire diameter variation rate of -3.5 to +3.5%, preferably -3.0 to +3.0%, and preferably has a degree of cohesion (guide friction number) of 1200 or more.

Fig. 8 is an enlarged plan view showing a part of a sleeve in the small-diameter coaxial cable harness of the third embodiment. The sleeve 40 is formed by weaving such monofilament synthetic fibers. For example, in the form of knitting, a fiber bundle 40a (a portion surrounded by a circular mark in Fig. 9) in which 16 filaments are arranged side by side is prepared, and is knitted into a tubular shape using a carrier of 16. If a fiber bundle 40a is composed of 6 to 13 strips of 16 carriers, the sleeve 40 is composed of about 100 to 200 monofilament fibers. For example, in the case where the number of the fiber bundles 40a is nine, the number of the monofilament fibers is 9 × 16 = 144. Further, the diameter of one monofilament fiber is 0.02 mm to 0.10 mm, and the thickness of the sleeve 40 (wall thickness of the cylinder) is 0.05 mm to 0.20 mm. In the case where the diameter of the fiber is 0.045 mm, the thickness of the sleeve 40 is 0.1 mm. Further, the cross-sectional diameter of the sleeve 40 in a cylindrical shape is 3.2 mm or less. When woven into a fiber, when a dummy core having an elliptical cross section is used, or a plurality of dummy cores having a circular cross section are used side by side, and a fiber is woven around the fiber, a braided sleeve having an elliptical cross section is produced.

On the other hand, in the case where the sleeve 40 is formed of a woven fabric, it is preferable to warp the fibers, and as the polymer fiber used in this case, polyester (for example, PET) is preferable. The warp-knitted sleeve 40 of the polymer fiber is more excellent in stretchability than the fabric, and the operation of inserting the wire harness 11C into the sleeve 40 is easy. For example, a polyester yarn having a thickness of 40 μm to 70 μm may be warp-knitted and elongated in the length direction to elongate the sleeve by 5% to 15%. Further, the weaving density of the sleeve 40 is, for example, 55 to 75 rounds per 1 turn in the circumferential direction and 25 to 35 rounds per 1 turn in the longitudinal direction.

Fig. 9 is a conceptual view showing the frame in which the narrow-coaxial coaxial cable harness 11C is continued in an extended state, (A) being a plan view and (B) being a side view. Fig. 10 is a conceptual diagram showing a state in which the frames connected by the small-diameter coaxial cable harness 11C are overlapped, (A) is a plan view, and (B) is a side view. The wire harness 11C having such a configuration is connected to the two substrates 41 and 42 which are disposed to be vertically overlapped and horizontally moved forward and backward (the left and right directions of the ninth and tenth drawings). The substrate 41 is incorporated in the first housing 1A (Fig. 7), and the substrate 42 is incorporated in the second housing 2A (Fig. 7).

Both ends of the wire harness 11 can be easily connected to the substrates 41, 42 by the termination process of the mounting connector 13. In addition, the wire harness 11C is bent in the width direction of the substrate (the direction of the two arrows W in the ninth (A) view) so that the waterproof portions 23 are U-shaped (or J-shaped) therebetween. , 42 continues. Thereby, the wire harness 11C can be connected between the both substrates 41 and 42 as a U-shape in the plan view direction of the substrates 41 and 42. The horizontal movement distance of the substrates 41, 42 is, for example, 30 mm to 60 mm. When the state of FIG. 9 and FIG. 10 is repeated, the wire harness 11C slides and repeatedly changes to a U-shape and a J-shape while moving the curved portion. This is called repeated bending.

In the case of using a conventional FPC (flexible printed circuit board), since the FPC is bent between the two substrates 41 and 42 and is orthogonal to the plane direction of the substrate, it is necessary to increase two in order to secure the bending radius. The gap between the substrates 41, 42. In the present invention, the thickness of the gap between the two substrates 41, 42 is sufficient for the wire harness 11C, and it is not necessary to increase the thickness of the substrate by using FPC, and the machine can be made thinner.

Fig. 11(A)(B) is a perspective view showing an example in which the frames 1A, 1B are connected by the narrow-diameter coaxial cable harness 11C. It is preferable to provide the accommodating portion 9 in the casings 1A, 2A, and the accommodating portion 9 accommodates the wire harness 11C with a predetermined width. For example, as shown in Fig. 11(A), a rectangular recess 9a may be provided as the accommodating portion 9. As a result, the U-shaped deformation of the wire harness 11C accompanying the relative sliding of the two frames 1A, 2A is performed in the accommodating portion 9, so that the coaxial cable 12 can be prevented from being caught between the frames 1A, 2A. Further, the two frames 1A, 2A can be smoothly slid. Alternatively, as shown in Fig. 11(B), the housing portion 9 surrounded by the wall may be formed on the housings 1A, 2A, for example, in a rectangular shape.

The thin-diameter coaxial cable 12 which is thinner than the AWG 44 is used, whereby the wire harness 11C is easily bent, and the resistance when the frames 1A, 2A slide with each other can be reduced. Further, since the wire harness 11C can be formed thin, the thickness of the machine can be reduced. Since the wire harness 11C can be sandwiched between the frames 1A and 2A, the thickness of the accommodating portion 9 can be slightly smaller than the thickness of the wire harness 11C (about 0.2 mm). As described above, the wire bundle 11C may include a small-diameter insulated cable having no outer conductor, but a thin cable having an outer diameter of the small-diameter insulated cable which is thinner than 0.3 mm is preferable.

For example, 40 thick AWG 44 cables 12 are inserted through a waterproof tube 21 (having an inner diameter of 2.4 mm and an outer diameter of 2.8 mm), and then inserted into a single sheet composed of a molten liquid crystalline polymer and a flexible polymer. The sleeve 40 (diameter: 2.8 mm + 0.2X2 = 3.2 mm) in which the silk synthetic fiber is woven, and then accommodated in a U shape in the width (the length in the W direction of the ninth (A)) is 20 mm. In the groove having a depth of 3 mm, one end side of the wire harness is fixed, and the other end side is moved in the longitudinal direction of the groove, and even if the bending and sliding are repeated 200,000 times, the center conductor of the cable 12 is not broken. Since the groove depth is smaller than the outer diameter of the sleeve 40, the sleeve 40 and the waterproof tube 21 are crushed. The wire harness is always in contact with the lower surface of the groove and the upper surface (upper frame), and friction is generated by the sliding of the wire harness, but the portion of the friction is covered by the sleeve 40 at this time. In the case of no casing coating, the friction between the watertight tube 21 and the upper and lower sides of the groove is increased, and the sliding cannot be smoothly performed.

Further, as shown in Fig. 7, the wire harness subjected to the sliding test is connected between the two frames by the waterproof structure, and even if it sinks into the water tank having a water depth of one meter for about 30 minutes, the waterproof pipe 21 is not generated. The break will not cause water seepage.

In the manufacture of the small-diameter coaxial cable harness 11A of the first embodiment, the small-diameter coaxial cable harness 11C is inserted into the sleeve 40 before the sealing cover is attached. Alternatively, in the manufacture of the small-diameter coaxial cable harness 11B of the second embodiment, each waterproof tape 35 is inserted into the sleeve 40 before the sealing cover is attached. In order to prevent the fibers from spreading, the ends of the sleeve 40 are integrally joined to each other by heat fusion, and are fixed to a predetermined position of the waterproof tube 21 by an adhesive tape or the like.

In the cable harness of the third embodiment, the waterproof tube is inserted into a cylindrical sleeve woven or braided with polymer fibers. Thereby, the bending radius can be reduced while obtaining good water repellency, thereby reducing the sliding resistance. The sleeve formed of the polymer fiber has good wear resistance, strength and elastic modulus, and the bending property of the wire harness is good, and the fiber surface is not thickened due to repeated friction caused by sliding with the frame body, and the vertical direction is generated. Hair (called fibrillation), there will be no damage. Therefore, the good sliding state of the wire harness can be maintained for a long period of time.

The narrow-diameter coaxial cable harness of the present invention is suitable for use in a compact small machine such as a mobile phone terminal, a small-sized camera, or a notebook computer, for connecting a circuit board in a casing slidably or rotatably coupled to each other.

1,2,1A,2A‧‧‧ frame

3‧‧‧Folding mobile phone terminal

3A‧‧‧Sliding mobile phone terminal

4‧‧‧ Hinges

4a‧‧‧through hole

5,6‧‧‧ cable insertion hole

7,8‧‧‧ recess

7a, 8a‧‧‧ inner circumference

9‧‧‧ Housing Department

10‧‧‧Bundle Department

11,11A,11B,11C. . . Thin coaxial cable harness

12. . . Thin coaxial cable

13. . . Connector

twenty one. . . Waterproof tube

twenty two. . . Sealing cap

twenty three. . . Waterproof department

twenty four. . . Insert hole

25. . . Flange

26. . . O-ring seal

27. . . Cylinder

28. . . Riveting member

29. . . Adhesive

30. . . Sealing ring

31. . . Flange

33. . . Support ring

32. . . Riveting member

35. . . Waterproof belt

35a. . . Inner layer

35b. . . Outer layer

40. . . casing

41,42. . . Substrate

Fig. 1 is a perspective view showing a folding mobile phone terminal.

Fig. 2 is a perspective view showing the slide type mobile phone terminal, wherein (A) shows an extended state and (B) shows an overlapped state.

Fig. 3 is a conceptual diagram showing an embodiment of a small-diameter coaxial cable harness of the present invention.

Fig. 4 is a plan view showing a state in which the narrow-diameter coaxial cable harness of the present invention and the first embodiment of the splicing structure using the wire harness are half-cut.

Fig. 5 is a plan view showing a state in which the narrow-diameter coaxial cable harness of the present invention and the second embodiment of the splicing structure using the wire harness are half-cut.

Fig. 6 is a plan view showing the wound state of the waterproof tape in the wire harness of the narrow-diameter coaxial cable of Fig. 5.

Fig. 7 is a plan view showing a state in which the narrow-diameter coaxial cable harness of the present invention and the third embodiment of the splicing structure using the wire harness are half-cut.

Fig. 8 is an enlarged plan view showing a part of a bushing in the small-diameter coaxial cable harness of the third embodiment of Fig. 7.

Fig. 9 is a conceptual view showing the frame in which the narrow-diameter coaxial cable harness of Fig. 5 is extended in an extended state, (A) is a plan view, and (B) is a side view.

Fig. 10 is a conceptual diagram showing a state in which the frames connected by the narrow-diameter coaxial cable harness of Fig. 5 are overlapped, (A) is a plan view, and (B) is a side view.

Fig. 11(A)(B) is a perspective view showing an example in which the frame is connected to the narrow-diameter coaxial cable harness of Fig. 5.

1,2. . . framework

4. . . Hinge

4a. . . Through hole

5,6. . . Cable insertion hole

7,8. . . Concave

7a, 8a. . . Inner circumference

10. . . Binding department

11A. . . Thin coaxial cable harness

12. . . Thin coaxial cable

13. . . Connector

twenty one. . . Waterproof tube

twenty two. . . Sealing cap

twenty three. . . Waterproof department

twenty four. . . Insert hole

25. . . Flange

26. . . O-ring seal

27. . . Cylinder

28. . . Riveting member

29. . . Adhesive

Claims (15)

A thin-diameter coaxial cable harness is a thin-diameter coaxial cable harness connecting two movably connected frames, and is characterized by: a bundle portion for binding a plurality of small-diameter coaxial cables And a waterproof portion including a flange portion extending outward in the radial direction and a cylindrical portion extending from a surface side of the flange portion, the surface of the flange portion opposite to the cylindrical portion The adhesive member is adhered and fixed to each of the two frames, and is watertightly attached to the frame. The waterproof portion is watertightly attached to the binding portion. The narrow-coaxial cable harness of claim 1, wherein the bundle portion includes a waterproof tube that wraps around the plurality of small-diameter coaxial cables between the waterproof portions and is watertightly It is assembled with the waterproof part. The narrow coaxial cable harness of claim 2, wherein the waterproof portion is watertightly attached to the waterproof tube by riveting of metal or heat shrinkable resin. The narrow coaxial cable harness of claim 2, wherein the waterproof portion is watertightly attached to the waterproof tube by pressing the waterproof portion into the waterproof tube. The narrow coaxial cable harness of claim 2, wherein the bundle portion is inserted into a cylindrical sleeve woven or braided by synthetic fibers. Such as the narrow-coaxial cable harness of claim 5, wherein the set The tube system is woven from a monofilament synthetic fiber composed of a molten liquid crystalline polymer and a bendable polymer. For example, the narrow-coaxial coaxial cable harness of claim 5, wherein the casing is warp-knitted with synthetic fibers. The narrow-coaxial coaxial cable harness of claim 1, wherein the binding portion includes a waterproof tape that is watertightly wrapped around the plurality of small-diameter coaxial cables. The narrow coaxial cable harness according to claim 8 , wherein the waterproof portion comprises: a seal ring formed of a flexible soft resin; and a support member that supports a reaction force elastically deformed when the frame is adhered to the frame, Further, it is watertightly attached to the binding portion that is inserted into the inner side by caulking. The narrow-coaxial coaxial cable harness of claim 8 wherein the waterproof tape is wound in multiple layers in different winding directions. The narrow-coaxial coaxial cable harness of claim 8, wherein the bundle portion is inserted into a cylindrical sleeve woven or braided by synthetic fibers. The narrow coaxial cable harness of claim 11, wherein the sleeve is woven from a monofilament synthetic fiber composed of a molten liquid crystalline polymer and a bendable polymer. For example, the narrow-coaxial coaxial cable harness of claim 11 wherein the sleeve is warp-knitted with synthetic fibers. The narrow coaxial cable harness of any one of claims 1 to 13, wherein a connector is provided at at least one end of the coaxial cable harness. A splicing structure of a small-diameter coaxial cable harness, which is characterized in that: any one of the first to thirteenth patent applications is arranged between two frames The narrow-diameter coaxial cable harness of the item is watertightly mounted on a portion of the narrow-coaxial coaxial cable harness that is introduced into the frame.