KR20110119519A - Coaxial-wire wiring body, production method thereof, and electronic device - Google Patents

Abstract

DISCLOSURE OF THE INVENTION Provided is a coaxial wiring body which secures waterproofness at an insertion opening of a housing case, reduces the number of parts while miniaturizing and simplifying the hinge and its surrounding structure, and an electronic device using the same.
[Solution] A plurality of coaxial lines 11 (1) and a sealing portion 3 formed to be integrated with the plurality of coaxial lines 11 are provided, and the sealing portion 3 fills the gaps between the plurality of coaxial lines. It has a gap filling part 3j and the peripheral part 3s which encloses a some coaxial line, It is characterized by the above-mentioned.

Description

Coaxial wiring body, its manufacturing method, and electronic device {COAXIAL-WIRE WIRING BODY, PRODUCTION METHOD THEREOF, AND ELECTRONIC DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial wiring body, a method for manufacturing the same, and an electronic device, for example, in an electronic device having a mechanism for coaxially conducting a conductive connection between two housing cases connected by a hinge. The present invention relates to a coaxial wire assembly, a method for manufacturing the same, and an electronic apparatus using the coaxial wiring body, which can prevent water from invading the two housing cases on a coaxial line even if the hinge is wet with water.

In an electronic device such as a mobile phone, two housing cases are connected by a hinge, and a circuit in a first housing case provided with a display portion and a circuit in a second housing case provided with a key operation portion are electrically connected by wiring. In recent years, these electronic devices have a tendency to require waterproofness. In particular, as mobile phones have increased opportunities for use in swimming pools and bathrooms, it is required to have waterproofness at portions of the wiring body insertion openings provided in the housing case. In the case of a single-axis hinge structure, a flexible printed wiring board, a flat cable, and the like are used for the wiring, but in the case of a two-axis hinge structure, isotropic flexibility is required, so a coaxial line is used. There are many cases. For a mobile phone having two housing cases connected in a two-axis hinge structure, in order to provide waterproofness, a tube that tightly connects between the housing cases, and a tube attached to the end of the tube and inserted into the wiring insert of the housing case A structure including a tubular sealing member and an O-ring wound around the tubular sealing member has been proposed (Patent Document 1). The O-ring is inserted into the wiring body insertion hole of the housing case while being wound around the cylindrical sealing member. The coaxial line is wired between the two housing cases through a tube passing through the hinge structure. Since the coaxial line does not deviate out of the tube between the two housing cases, even if the hinge structure is wet with water, water is prevented from entering the housing case along the coaxial line.

Patent Document 1: Japanese Patent Application Laid-Open No. 2008-263285

The waterproof structure of said wiring body requires components, such as a tube, a cylindrical sealing member, and an O-ring. For this reason, the space which overlaps spatially in a wiring body will be formed, and the cross-sectional area of (coaxial line + tube) will increase and it will become large. The (coaxial line + tube) is zigzag and is disposed between the two wiring body insertion holes through the hinge structure. As a result, depending on the number of wiring bodies, the hinge structure and the surrounding structure become complicated and enlarged. In addition, since the number of parts increases, the parts procurement cost and manufacturing process become complicated, resulting in low economic efficiency.

The present invention provides an electronic device using a coaxial wire assembly, a method of manufacturing the same, and a coaxial wiring assembly, in which waterproofing is secured at an insertion opening of a housing case, and a component point is reduced while miniaturizing and simplifying the hinge and its surrounding structure. The purpose is to provide.

The coaxial wiring body of this invention is equipped with the some coaxial line and the sealing part formed so that it may integrate with the some coaxial line. The sealing portion has a gap filling portion for filling the gaps of the plurality of coaxial lines, and a peripheral portion surrounding the plurality of coaxial lines.

According to the above structure, for example, the coaxial wire can be provided in the electrical circuit inside the housing case while preventing the water from penetrating the coaxial line into the housing case by inserting the sealing portion into the wiring insertion hole of the housing case. . Moreover, a sealing apparatus may be comprised only by the said sealing part, and a sealing apparatus may be comprised using other components, such as an O-ring. The gap filling portion may be a filling degree such that water can be prevented from passing through the sealing portion through gaps of a plurality of coaxial lines, and it is not necessary to completely fill the gap portion of the entire passage portion of the sealing portion. In the present invention, the contact surface between the sealing portion and the plurality of coaxial lines may be melted and fused, or may not be fused.

In the above configuration, the plurality of coaxial lines only overlap the gap filling portion and the peripheral portion in the sealing portion, and since this portion is a portion that is inserted into and fixed to the insertion opening of the housing case in the electronic device, the cross-sectional area does not increase. In the portions other than the sealing portion, the coaxial line is exposed (the adhesive tape for fixing the state of the twisted plural coaxial lines is wound), but the jacket of the outer shell is made of insulating resin, and the waterproof and water repellent properties are As a result, the entire waterproofness is secured. Therefore, it is not necessary to use a tube or the like for sheathing (coating) the coaxial line, so that the part score can be reduced. As a result, the structure of the hinge structure and its peripheral portion can be simplified and downsized.

In addition, the sealing part for waterproofing can also double as dust. Thereafter, no mention is made of dustproofing, but it is accompanied by waterproofing, and of course, a dustproofing effect can be obtained. In addition, in said coaxial wiring body, one sealing part for forming a sealing apparatus may be sufficient and two or more may be sufficient as it.

In the part in which the said coaxial line sealing part was formed, the concave part which removed the outer periphery of the said coaxial line or the convex part which protrudes so as to cover an outer periphery is provided, and the concave part of each coaxial line between several integrated coaxial lines. Alternatively, the convex portion may have a transverse opening space that opens to the outside, and the sealing portion may be formed to pass through the transverse opening space. Thereby, the concave portion or the convex portion provided locally in the annular shape creates a horizontal opening space in the portion where the sealing portion is formed when a plurality of coaxial lines are bound. In the absence of concave or convex portions, when the resin is injected to form a seal, even if there is a gap between the resins, the resin is sealed by the coaxial line itself. It is blocked by good. For this reason, the resin for forming a gap filling part does not reach inside the bound coaxial line. In particular, it cannot reach the center of the bond. As a result, the coaxial line gap part which is not filled with resin arises, and it becomes a path | route which moves along a coaxial line along the gap part. However, if the concave portion or convex portion is locally present, even if the coaxial line is bound, a transverse opening space is generated, and the resin can reach from the outside to the binding center through the transverse opening space. In the case of the concave portion, the removed portion is a horizontal opening space. On the other hand, in the case of a convex part, when a convex part touches each other, the space | gap which becomes a horizontal opening space can be formed in the part adjacent to a convex part. As a result, the gap filling portion can be reliably formed thick up to the binding center of the coaxial line. As the depth of the concave portion or the height of the convex portion is higher, the thickness of the space between the coaxial lines becomes thicker, and accordingly, the thickness of the gap filling portion can also be formed thicker. In other words, the resin can be passed with a margin.

The plurality of coaxial lines are flat knitted coaxial lines having weaving threads that alternately weave the plurality of coaxial lines, the flat knitted coaxial lines being flattened in a flat knitted state or looped or spiraled, It is possible to take the configuration in which the sealing portion is formed to pass through the gap of the coaxial line formed by the weaving thread. As a result, a certain gap is formed by the weaving thread, and when the resin is injected to form a seal, the resin easily passes to the centers of the plurality of coaxial lines. As a result, the filling of the resin in the sealing portion can be improved, and for example, pores (holes) can not be formed in the center portion of the sealing portion.

A plurality of coaxial lines of the portions in which the sealing portions are formed are curved to swell apart from each other to form a swelling spaced portion, and the sealing portion can be configured to pass between the coaxial lines of the swelling spaced portions. have. Here, it can be said that the swelling separation part is loosened and bent. Thereby, when injection molding resin of a sealing part, it becomes easy to fill resin inside through the swelling spaced apart part of a coaxial line. In addition, the form in which a plurality of coaxial lines are bent and expanded to each other, ie, the distant spaced portions, need not be symmetrical to the central axis of the bound coaxial line, and the entire coaxial line may be bent and expanded in a predetermined direction. What is necessary is just to form the part spaced apart in the some outer part of the bound coaxial line.

The groove for accommodating an O-ring can be provided in the outer peripheral surface of the peripheral part of said sealing part. Thereby, airtightness with the housing case surface of a wiring body insertion port can be ensured with an O ring. In this case, the resin of the sealing portion may or may not be an elastic body.

The outer peripheral surface of the peripheral part of said sealing part can be made into a sealing surface. This can further reduce the part score without using an O-ring or the like. In this case, it is preferable that resin of a sealing part is an elastic body.

Resin which forms a sealing part can be made into resin whose temperature is 190 degreeC, and melt flow rate (JIS K7210) (MIS) at a nominal load of 2.16 kg of 50 g / 10min or more. If it is possible to have voids or holes in the gap between the coaxial lines, there is a fear that full waterproofness cannot be maintained. When it is important to remove voids in the gap filling part in order to secure waterproofness, the fluidity of the resin during injection molding is emphasized. As mentioned above, by making MFR larger than the said value, resin can flow into the coaxial line gap at injection molding, and an air gap can be eliminated.

Resin which forms a sealing part can be made into resin lower in melting | fusing point than resin of the coaxial jacket. Thereby, it does not aim at fusion | melting a sealing part with a coaxial line jacket (it may be fusion | melting), but high fluidity is obtained instead, it can flow in the clearance gap of a coaxial line, and can remove a space | gap.

The coaxial line and the sealing portion may take a state of not being fused at the contact surface. Thereby, the inflow of the sealing part formation resin to the clearance gap of the coaxial line at the time of sealing part formation rather than fusion of a contact surface can be emphasized, and the sealing part without a gap can be formed in the clearance gap of a coaxial line. Even if the contact surface of a coaxial line and a sealing part is not fused, the airtightness which can ensure sufficient waterproofness can be acquired by mechanical force, such as the compression force at the time of injection molding.

Ethylene-methacrylic acid copolymer resin (EMAA resin) can be used as resin which forms a sealing part. EMAA resins have a high MFR above the melting point and do not flow into coaxial gaps to form voids. In addition, when EMAA resin is used, after injection molding to form a seal, the contact surface can obtain airtightness that can ensure waterproofness even if it is not fused.

Resin which forms a sealing part can be made into resin similar to the insulating layer which insulates the signal line and ground line of a coaxial line, or resin which is lower in melting | fusing point than resin of an insulating layer. This can prevent deterioration such as deformation due to softening of the insulating layer during injection molding. The coaxial line is usually composed of a signal line / insulation layer / ground line / shell of a core position, and the jacket is made of the same resin as the insulating layer or a resin having a lower melting point than the resin of the insulating layer.

In this case, the resin forming the sealing portion is preferably the same resin as that of the coaxial jacket or a resin having a higher melting point than the resin of the jacket. Thereby, integrated connection of a jacket and a sealing part can be ensured, and connection strength can be raised.

Resin which forms said sealing part can be made into PFA (tetrafluoroethylene perfluoroalkyl vinyl ether copolymer) or ETFE (tetrafluoroethylene ethylene copolymer). In order to prevent leakage of a high frequency signal etc., a coaxial line uses resin with a low high frequency dielectric constant for the insulating layer between the signal line of a core part, and the surrounding ground line. The jacket may be made of an insulating resin having a low high-frequency dielectric constant, but may be the same as or different from the resin forming the insulating layer. Resin commonly used as an insulating layer is PFA. PFA has a very low high frequency dielectric constant. The resin commonly used as a jacket is PFA or ETFE. ETFE has a low high frequency dielectric constant and a lower melting point than PFA. PFA has a melting point of 310 ° C and ETFE has a melting point of 260 ° C.

When using PFA as the seal, the jacket preferably uses coaxial lines of PFA or ETFE. According to this combination, the sealing part can be formed integrally by injection molding with the same material as a jacket, or a material with a higher melting point than a jacket, following a jacket. For this reason, connection of a clearance gap part, a peripheral edge part, and a jacket can be reliably performed. That is, the connection strength of a jacket and a sealing part can be improved.

When ETFE is used as the seal, it is preferable to use a coaxial line using ETFE as the jacket. Thereby, a jacket and a sealing part are formed from the same material, and the advantage by the same material connection can be acquired.

In both cases, the resin forming the sealing portion has a low high frequency dielectric constant, which can contribute to prevention of deterioration of the high frequency signal.

In the above sealing portion, a plurality of coaxial lines may be arranged in a flat arrangement in a planar shape or in a bundle arrangement in which a cross-sectional circular shape or an elliptic shape is bundled. Thereby, the sealing part of an appropriate cross-sectional shape can be formed according to the form of an electronic device. In the case of a bundle arrangement, the surface area can be made small and it can be set as the sealing part which is easy to be compact. In the case of flat arrangement, since the gap part of a coaxial line is exposed to the outside, the gap filling part with high airtightness can be reliably and easily formed by the injection molding process of resin. In addition, in the case of a cross-sectional ellipse shape, for example, it helps to make the housing case of a mobile telephone, etc. thinner.

A sealing part can be provided in one place or two places. Thereby, waterproof wiring to one housing case, or waterproof wiring which electrically connects between two housing cases with respect to two housing cases can be performed. As an example of the conductive connection between the two housing cases, in an electronic device in which the first housing case provided with the display portion and the second housing case provided with the key operation portion are connected in a hinge structure, the wiring body of the wiring body other than the housing case can be secured. The electrical circuits of both housing cases can be electrically connected while reducing the cross-sectional area.

An electronic device using any one of the above coaxial wire assemblies can be electrically connected while ensuring water resistance while simplifying and miniaturizing. Further, the coaxial line can smoothly rotate the housing case around two orthogonal axes when used in an electronic device using a biaxial hinge structure. This is an advantage not found in flexible printed wiring or flat cables. Of course, it can also be used for a single-axis hinge structure.

The manufacturing method of the coaxial wiring body of this invention manufactures the coaxial wiring body provided with the some coaxial line and the sealing part formed so that it may integrate with the some coaxial line. This manufacturing method forms the process of preparing a molding die, the process of heating the said molding die to the temperature more than melting | fusing point of resin of a sealing part, setting a some coaxial line in a molding die, and forming a sealing part. It is characterized by including the process of inject | pouring into a shaping | molding die, and the process of cooling a metal mold | die to predetermined temperature below melting | fusing point of resin, with injection molding the resin of the sealing part.

By the said method, the airtightness in the contact surface of a coaxial line and a sealing part can be ensured, flowing the resin for sealing part formation in the clearance gap of a plurality of coaxial lines, and removing a space | gap. The resin of the coaxial jacket and the resin of the sealing portion may be melted and fused together, or the resin temperature of the sealing portion may not be welded lower than the melting point of the resin of the jacket during injection molding. In the case of focusing on the flow of a large number of coaxial lines of resin, a resin having a large MFR is used. Since the resin has a low melting point, the resin is heated to a temperature lower than the melting point of the resin of the jacket and injection molded, so that the resin is fused with the jacket. It doesn't work. However, the airtightness between a jacket and a sealing part can be ensured, filling the clearance gap of many coaxial lines, and the high level waterproofness excellent in durability can be obtained. In addition, cooling of said metal mold | membrane means forced cooling which obtains the cooling rate larger than cooling to air-cooled, and water cooling, spray cooling, forced air cooling, etc. correspond. It is a factor which performs such cooling to a metal mold | die, and resin may shrink and airtightness may improve (under confirmation).

The part which forms each sealing part of a some coaxial line can be provided with the process of providing the concave part which removed the outer skin of this coaxial line, or the convex-shaped part which protrudes so as to cover an outer skin. Thereby, the horizontal opening space which passes locally from the outside to a binding center can be formed in the part which forms the sealing part of the coaxial line which bound. As a result, in the resin injection step, the gap filling portion can be formed through the resin to the binding center portion.

A plurality of coaxial lines, a flat knitted coaxial line having a weaving thread in which weaving a plurality of coaxial lines alternately, the flat knitted coaxial lines are set in a molding die while being flat knitted bands or agglomerated in a ring or spiral shape. You may also do it. Thereby, when injecting resin in order to form a sealing part, resin can be filled through the space | interval of a coaxial line. As a result, the filling property of resin of a sealing part can be improved and a hole etc. can be prevented.

In the molding die, a movable part for changing the distance to the frame part grasping a plurality of coaxial lines on both sides or one side adjacent to the frame part for injecting the resin for forming the seal part When a plurality of coaxial lines are set in a molding die, the movable part is separated from the frame part which catches and injects a plurality of coaxial lines, and is close to the frame part which injects a movable part before injecting resin, Can be curved away from each other and bulge to form a bulge spacing part. Thereby, when injection molding resin of a sealing part, it becomes easy to fill resin inside through the swelling spaced apart part of a coaxial line. As a result, formation of a hole etc. in a sealing part can be prevented, the filling degree of resin can be raised, and watertightness can be improved.

ADVANTAGE OF THE INVENTION According to this invention, the coaxial wiring body which suppressed the component number, and the electronic device using the same can be obtained, minimizing and simplifying the hinge and the structure of the surroundings, ensuring waterproofness at the insertion opening of a housing case.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the mobile telephone using the coaxial wiring body in Embodiment 1 of this invention, (a) is a closed state, (b) is an open state, (c) is a closed state with a display part upper part. Drawing,
FIG. 2 is a cross-sectional view showing a mounting structure of a coaxial wire assembly in the mobile telephone of FIG. 1; FIG.
3 is a perspective view showing a coaxial wire assembly according to the first embodiment of the present invention;
4 is a schematic diagram showing a mounting structure of a coaxial wire assembly according to the present embodiment;
FIG. 5 is a view showing a sealing portion of the coaxial wire assembly of FIG. 3, (a) is a perspective view of the sealing portion, (b) is a sectional view;
6 is a partially enlarged view of FIG. 5 (b);
FIG. 7 is a perspective view illustrating a coaxial wiring body of a modification (example of the present invention) according to the first embodiment; FIG.
FIG. 8 is a cross-sectional view of a sealing portion of the coaxial wire assembly shown in FIG. 7; FIG.
9 is a partially enlarged view of FIG. 8;
It is a figure which shows the manufacturing method of the coaxial wiring body shown in FIG. 7, (a) is a top view which shows the state which arranged the ultrafine coaxial line flat, (b) is a sealing part after twisting. Perspective view showing a state of integration by injection molding,
11 is a cross-sectional view for explaining a coaxial wire assembly according to a second embodiment of the present invention;
12 is a perspective view of a coaxial wire assembly according to a third embodiment of the present invention;
It is a schematic diagram which shows the installation structure of the coaxial wiring body shown in FIG.
14 is a perspective view showing a coaxial wire assembly according to a fourth embodiment of the present invention;
15 is a cross sectional view of a sealing portion of the coaxial wiring body shown in FIG. 14;
16 is a diagram showing a coaxial assembly in a coaxial wiring assembly of Embodiment 5 of the present invention;
FIG. 17 is a cross-sectional view of the coaxial assembly of FIG. 16, (a) shows a gap portion surrounded by three coaxial lines, (b) shows a gap portion surrounded by four coaxial lines,
18 is a diagram showing a coaxial assembly in a coaxial wiring assembly of Embodiment 6 of the present invention;
FIG. 19 is a view showing a coaxial wire assembly according to a seventh embodiment of the present invention, wherein (a) flat woven wire and (b) show coaxial wire assembly using a flat knitted wire;
Fig. 20 is a view showing the manufacturing method of the coaxial wire assembly according to the eighth embodiment of the present invention, in which (a) is a state in which a plurality of coaxial lines are set in a molding die for forming a sealing portion, and (b) is a movable portion. A drawing showing a state in which a plurality of coaxial lines are bent outwardly and expanded by approaching a frame part to be ejected;
It is a figure which shows the some coaxial line which curved and expanded before injection | molding resin of the sealing part.

(Embodiment 1)

FIG. 1: is a figure which shows the portable telephone 50 which is an electronic device in which the coaxial wiring body in Embodiment 1 of this invention is used. In FIG. 1, the cellular phone 50 includes a key operation unit housing case 20 connected by a hinge structure 40, and a display unit housing case 30. In FIG. 1A, the display unit housing case 30 is closed on the key operating unit housing case 20 with the rear surface as the front surface. The display housing case 30 is rotatable about the X axis and the Y axis of the hinge structure 40. FIG. 1B is a view showing an open state by rotating the display housing case 30 including the display portion 31 around the X axis of the hinge structure 40. The key 21 is arranged in the key operation part housing case 20. The electrical signal by the operation of the key 21 is transmitted from a wiring circuit (not shown) in the key operating portion housing case 20 to a wiring circuit (not shown) in the display portion housing case 30. The coaxial wiring body described below is used for the transmission of this electric signal. In Fig. 1 (b), the hinge structure has the cover 41 of the Y-axis rotating shaft mechanism as the center, and the A portion on the left side is a portion including the X axis rotating shaft mechanism, and the B portion on the right side is connected to the display housing case 30. It is a part where the said coaxial wire body which electrically connects the key operation part housing case 20 is accommodated. A and B rotate about the Y-axis about the cover 41 of the center part. FIG. 1C rotates the display housing case 30 180 degrees around the Y axis, B to the left, A to the right, and also rotates around the X axis from the state of FIG. The display part housing case 30 is superimposed on the key operation part housing case 20 with the display part 31 facing the front side, and shows the closed state.

FIG. 2 is a cross-sectional view of a hinge structure periphery in the state of FIG. 1 (b). FIG. The wiring circuit which is not shown in the space 25 in the key operation part housing case 20 exists, and the wiring circuit which is not shown in the space 35 in the display part housing case 30 exists. In the cellular phone 50, even if water enters the hinge, both of the space 25 and the space 35 need to cause water to enter. The coaxial wiring body 10 of this embodiment is provided with the sealing apparatus S in both the part inserted in the key operation part housing case 20, and the part inserted in the display part housing case 30. As shown in FIG. In this embodiment, the sealing apparatus S is comprised from the sealing part 3 formed so that it may be integrated into the some coaxial line 11 by injection molding, and the O-ring 13 wound around the sealing part 3.

In the hinge structure, the shaft portion of the Y-axis rotating shaft mechanism under the center cover 41 is cylindrical and fixed to the key operating portion housing case 20. When the display unit housing case 30 rotates around the cylindrical portion when it rotates around the Y axis, the display unit housing case 30 also includes the X axis rotating shaft mechanism A and the housing portion B of the coaxial wire assembly included in the hinge structure. Rotate around the Y axis. The cylindrical portion (cylindrical cavity formed) serves as an insertion hole of the coaxial wire assembly 10.

The coaxial wire assembly 10 is provided with a connector 19 at both ends thereof. The coaxial wire assembly 10 includes a waterproof sealing device S inserted into an insertion hole provided in the display housing case 30, and is included in the Y-axis rotary shaft mechanism of the hinge structure via the housing portion B of the coaxial wire assembly. The other sealing device S is inserted in the insertion opening of a cylindrical part (opening to the key operating part housing case 20). As described above, conductive connection between the two housing cases 20 and 30 connected by the two-axis hinge structure 40 which can rotate around the X-axis and the Y-axis is ensured, and then conductively connected. The coaxial wire assembly 10 is very suitable. That is, the some coaxial line is arrange | positioned as it is (it has the fixation of the twist state by a twist and an adhesive tape) in the accommodating part B of a coaxial wiring body, and sheath components, such as a tube, may not be used. For this reason, the housing | casing part B can be miniaturized and the structure of a wiring body insertion port can also be simplified. It is also preferable to use an ultrafine coaxial line as the coaxial line.

3 is a perspective view illustrating the coaxial wire assembly 10 of the present embodiment. In this coaxial wiring body 10, as mentioned above, the sealing apparatus S is attached to the sealing part 3 which is a resin molded object integrated with the some coaxial line 11 by injection molding, and its sealing part 3 It is composed of a wound O ring 13.

4 is a schematic diagram showing a state in which the coaxial wire assembly 10 is inserted into the insertion opening of the key operating unit housing case 20 or the display unit housing case 30. The sealing device S inserted into the insertion hole of the housing case 20 or 30 does not intrude water into the housing case 25 or 35 even if the hinge structure 40 gets wet. The plurality of coaxial lines 11 is made of an insulating resin, so that the jacket is made of insulating resin, so that the jacket itself does not become an intrusion path even when wet.

FIG. 5 is a view for explaining the sealing portion 3 integrated with the coaxial line 11 by injection molding, in which (a) is a perspective view of the sealing portion, and (b) is a state in which an O-ring is wound around the sealing portion. Cross-sectional view at The sealing part which is a resin molding is integrated with the some coaxial line 11. However, that alone is not enough to fulfill the protective function. For example, if there is a gap between individual coaxial lines, and the gaps communicate along the coaxial line, it is impossible to obtain a waterproof function. For this reason, as shown to Fig.5 (a), (b), the sealing part 3 encloses the gap filling part 3j which fills the clearance gap between coaxial lines 1, and the some coaxial line 11. Has a peripheral portion 3s. Although it is preferable to fill the gap filling part 3j completely without leaving any gap, even if there is a little gap (hole), it is not necessary to form the continuous gap which makes the gap communicate and terminates the sealing part 3. In this embodiment, the contact surfaces of the sealing portion and the plurality of coaxial lines may be melted and fused together, or may not be fused.

In this embodiment, the sealing part 3 is provided with the groove | channel for O rings, and has the groove bottom surface 3b with respect to the surface 3a. The O-ring 13 is wound around the groove. By using the O-ring 13, reliable waterproofness can be obtained while reducing the dimensional accuracy and the like of the portion constituting the sealing device S directly.

In addition, although seven coaxial lines are shown as a some coaxial line 11 in FIG.5 (b), normally tens, for example, about 40 coaxial lines are used. In this case, an ultrafine coaxial line is particularly preferable for downsizing the coaxial wire assembly 10.

FIG. 6: is sectional drawing for demonstrating the structure of the sealing part 3 which is a resin molded object integrated in the some coaxial line by injection molding. One coaxial line (an ultrafine coaxial line) 1 is an insulating layer which is a layer which insulates the signal line 1a located in the core portion, the ground line 1g around it, and the signal line 1a and the ground line 1g. 1d) and a jacket 1s which is an outer shell covering the ground line 1g. It is preferable that the sealing part 3 which is a resin molding is formed as resin which is intimately continuous with the jacket 1s, and the bonding strength of the sealing part 3 and the jacket 1s is high. Moreover, it is necessary for the sealing part 3 to have the gap filling part 3j which fills the clearance gap between coaxial lines 1 comrades. Although it is inevitable that a clearance gap may be formed in the some coaxial line 11, the clearance charging part 3j should be filled so that it may not make this clearance gap the minimum, and let it be a continuous clearance which can pass. If the resin which comprises the sealing part 3 is the same resin as the jacket 1s, it will become the same material connection, and it is advantageous in obtaining continuity materially and raising joining strength. However, the resin of the sealing portion 3 may not necessarily be the same resin as the jacket 1s.

The peripheral portion 3s of the sealing portion 3 is essential for forming a highly reliable sealing device S by surrounding the plurality of coaxial lines 11.

(Modification of Embodiment 1)

FIG. 7: is a perspective view which shows the coaxial wiring body 10 of the modification (this invention example) which concerns on Embodiment 1. FIG. FIG. 8 is a cross-sectional view including an O ring of the sealing device S of FIG. 7. 9 is a partially enlarged view of FIG. 8 except for an O-ring. In the coaxial wiring body 10 of this modification (this is an example of this invention), the coaxial line (extreme coaxial line) 1 is arrange | positioned flat. In such a flat arrangement, the gap between the coaxial lines 1 is not located deep inside, but is located at a place visible from the outside. For this reason, as shown in FIG. 9, at the time of injection molding, the gap filling part 3j can be formed reliably and easily. For this reason, the sealing part 3 with high airtightness can be easily manufactured in a longitudinal direction (extension direction of a coaxial line), paying much attention to the property of the peripheral part 3s becoming a flat surface shape.

In summary, the coaxial wire assembly 10 of the modification shown in Figs. 7 to 9 is characterized in that the gap charging portion 3j with difficulty is easily formed with high reliability in terms of complete charging. .

Next, the manufacturing method of the coaxial wiring body 10 shown to FIGS. 7-9 is demonstrated. First, the some coaxial line 1 (11) which has the connector 19 in both ends is prepared. The plurality of coaxial lines 1 (11) are arranged in a planar shape. In injection molding of the sealing part 3, the said coaxial line 11 is made to pass through the predetermined position of a metal mold | die, and the predetermined part of this coaxial line is arrange | positioned in a metal mold | die. Thereafter, the molten resin is injected from the nozzle at a predetermined pressure into the mold via the gate serving as the resin inlet. After cooling, if separated from a metal mold | die, the coaxial wiring body 10 shown to FIGS. 7-9 can be obtained. Also about the coaxial wire assembly 10 of the bundle arrangement shown in FIG. 3, after arrange | positioning a some coaxial line to bundle arrangement (fixed with adhesive tape etc.), it arrange | positions in a metal mold in the above-mentioned procedure, and resin is injection-molded. It can manufacture by doing.

The above-mentioned manufacturing method does not specifically bend the coaxial line 11, but is the manufacturing method of the coaxial line body 10 of a straight type. Next, although the flat arrangement similar to the coaxial wiring body 10 shown to FIGS. 7-9 is demonstrated, the manufacturing method of the coaxial wiring body 10 of the type in which the coaxial line 11 was curved is demonstrated. FIG. 10 (a) is a diagram showing a plurality of coaxial lines 11 having connectors 19 at both ends, which are arranged for the purpose of making the completed coaxial wire assembly 10 curved. As for the coaxial line arrange | positioned at planar shape, the long one is arrange | positioned in order to one side, and is largely curved in order outward. When the plurality of coaxial lines 11 are twisted, a twist line 11 that is curved in a convex shape on one side is obtained. This is wound around an adhesive tape to fix the curved twisted state. That is, at the time of arrange | positioning in a metal mold | die, it is already formed in the curved state, and this curved twisted state is fixed by adhesive tape etc. In the injection molding of the sealing part 3, the said twisted coaxial line 11 is made to pass through the predetermined position of a metal mold | die, and the predetermined part of the said coaxial line is arrange | positioned in a metal mold in consideration of the direction of a curve, etc. Thereafter, the molten resin is injected from the nozzle at a predetermined pressure into the mold via the gate serving as the resin inlet. After cooling, the coaxial wiring body 10 separated from the metal mold | die is shown to FIG. 10 (b). As mentioned above, the direction of curvature can be determined by the direction, attitude | position, etc. at the time of arrange | positioning in a metal mold | die.

According to the coaxial wiring body of this embodiment, a some coaxial line only overlaps a clearance gap part and a peripheral part in a sealing part. This part is a part which is inserted and fixed to the insertion opening of a housing case in an electronic device, and a cross-sectional area does not increase. Moreover, although a coaxial line is exposed in parts other than a sealing part, since a jacket is made of insulating resin and is waterproof and water-repellent, the waterproofness of the whole is ensured. Therefore, it is not necessary to use a tube or the like which sheaths the coaxial line, and the hinge structure can be simplified and downsized. It is also possible to reduce the part score.

(Embodiment 2)

11 is a cross-sectional view showing the coaxial wiring body 10 according to the second embodiment of the present invention. Coaxial line 1 is a flat arrangement. In the coaxial wiring body 10 of this Embodiment 2, resin of the insulating layer 1d of the coaxial line 1 is made into PFA, resin of the jacket 1s is made into ETFE, and resin of the sealing part 3 is made into ETFE. It is characterized by one point. By such a material configuration, the following advantages can be obtained.

(1) Melting | fusing point of PFA which forms the insulating layer 1d is 310 degreeC, and is 50 degreeC higher than melting | fusing point 260 degreeC of ETFE of resin of the sealing part 3. For this reason, deterioration, such as deformation of the insulating layer 1d, at the time of injection molding of ETFE can be prevented.

(2) The ETFE of the jacket 1s and the ETFE of the sealing portion 3 are the same resin, so that the integration becomes the same material connection by injection molding. For this reason, connection integration can be made smooth and connection strength can be made high.

(Modification of Embodiment 2)

Although not shown, the following is a modification (the example of this invention) of the coaxial wiring body 10 shown in FIG.

Modification Example 1 (Invention Example): (Insulation layer 1d is PFA / Jacket 1s is ETFE / Sealing part 3 is PFA)

According to the said structure, injection molding of resin of the molten state hotter than jacket 1s is performed. For this reason, since affinity with the jacket 1s is made good and integration is performed while melting the jacket 1s, the connection strength of the jacket 1s and the sealing part 3 can be improved. In addition, since the PFA made of the same resin as the insulating layer 1d is injected into the molten state in the state where the jacket 1s is interposed, the insulating layer 1d is temporarily interrupted in an excessively high temperature state via the jacket 1s. It is just left. For this reason, deformation of an insulating layer can be avoided by performing temperature control etc. of resin of the molten state which forms the sealing part 3 precisely.

Modification Example 2 (Invention Example): (Insulation layer 1d is PFA / Jacket 1s is PFA / Sealing part 3 is PFA)

According to the above configuration, injection molding of the same resin as the jacket 1s is performed. For this reason, integration becomes the same material connection by injection molding. For this reason, connection integration can be made smooth and connection strength can be made high. In addition, since the PFA of the same resin as the insulating layer 1d is injected in the molten state in the state where the jacket 1s is interposed, the insulating layer 1d is temporarily transient in a high temperature state via the jacket 1s. It is just left. For this reason, deformation | transformation of an insulating layer can be avoided by performing temperature control etc. of resin of the molten state which forms the sealing part 3 precisely.

(Embodiment 3)

12 is a perspective view illustrating the coaxial wire assembly 10 according to the third embodiment of the present invention. 13 is a schematic diagram which shows the state which inserted the said coaxial wire body 10 in the insertion opening of the key operating part housing case 20 or the display part housing case 30. FIG. In this embodiment, the sealing apparatus S is comprised only by the sealing part 3 which is a resin molding. That is, the surface 3a of the sealing part 3 turns into the sealing surface of the sealing apparatus S. FIG. It is preferable that such a sealing part 3 is an elastic body. If there is elasticity of about PFA or ETFE, the sealing apparatus S can be comprised only by the sealing part 3.

According to said sealing apparatus S, since an O-ring is abbreviate | omitted, a component point can be reduced. For this reason, the coaxial wiring body 10 excellent in economy can be obtained, while obtaining the advantage of the structure of the hinge of 1st Embodiment and its peripheral part being simplified and downsized.

(Embodiment 4)

14 is a partially enlarged view of the coaxial wire assembly 10 according to the fourth embodiment of the present invention. In this coaxial wiring body 10, the sealing apparatus S is the same as the structure shown in FIG. 3, The sealing part 3 which is a resin molded object integrated with the some coaxial line 11 by injection molding, and its sealing part It consists of the O ring 13 wound by (3). On the outer circumference of the plurality of coaxial wiring bodies 11 other than the sealing part 3, Poreflon (registered trademark) tape 11s manufactured by Sumitomo Electric Industries, Ltd. made of PTFE (tetrafluoroethylene resin) is oblique or spiral shape. Wound to form a coating layer. The plurality of coaxial lines 11 may be up to about 40 in number. Although the outer tape may not be sensed, by winding the Poreflon tape 11s, the sliding ability is increased, and the scattering of a plurality of coaxial lines can be prevented. The improvement of the slidability by winding the Peroflon tape 11s is to make it difficult for the coaxial line to be rolled up at the end of the molding die with the molding die.

The point of this embodiment has the characteristic that MFR in temperature 190 degreeC and nominal load 2.16 kg uses resin 50g / 10min or more for resin which forms a sealing part. Thus, resin with large MFR is resin with low melting | fusing point normally, For example, EMAA resin (melting point 100 degreeC) can be used.

FIG. 15 is a cross-sectional view of the sealing portion 3 of the coaxial wire assembly 10 shown in FIG. 14. EMAA is used for resin which forms the sealing part 3. PFA (melting point 310 ° C.) is used as the insulating layer 1d which insulates both the signal line 1a and the ground line 1g of the coaxial line 1, and ETFE as the jacket 1s. (Melting point 260 ° C.) is used. In the injection molding of the sealing portion 3, a plurality of coaxial lines 1 are set in the molding die and the molding die is heated, but the temperature is determined by the resin of the injection molding, that is, the resin forming the sealing portion 3. The temperature is about 30 ° C higher than the melting point. For this reason, for example, the molding die is heated to 130 ° C., where it is heated to a temperature of 200 ° C. to inject the EMAA in a molten state. The resin ETFE forming the jacket 1s is at least 50 ° C higher than the heating temperature of 200 ° C and the melting point of EMAA 100 ° C. The ETFE at the melting point of about 260 ° C. forming the jacket 1s does not melt at the time of the injection molding, and therefore the sealing portion 3 and the jacket 1s are not fused at the contact surface. The state in which the other two resins are not contacted and fused at the contact surface can be easily specified by an optical microscope, an electron microscope, or the like.

In FIG. 15, only a part of the coaxial line 1 is shown, but in many cases, the number of coaxial lines 1 may be 40, so that the centers of the plurality of coaxial line assemblies 11 are surrounded by multiple coaxial lines. For this reason, when the resin of the sealing part 3 spreads to all the gap | interval of a plurality of coaxial lines certainly, many coaxial lines of the periphery must reach the center through a narrow gap in the center of the coaxial assembly 11, In between there is a great resistance to flow. Resin, for example EMAA, having a MFR of 50 g / 10 min or more at a temperature of 190 ° C. and a nominal load of 2.16 kg, has high fluidity and can reliably fill a gap in the center part through a plurality of coaxial lines 1 during injection molding. When the MFR is about 20 g / 10 min, it is impossible to fill all the gaps of the plurality of coaxial lines, and voids are generated. By using resin of 50 g / 10min or more of said MFR, resin can be spread | dispersed widely also in the center part of the coaxial line assembly 11 which consists of many coaxial lines, and a gap can be filled. As a result, a high level of waterproofness excellent in durability can be obtained.

The manufacturing method of the coaxial wiring body 10 shown to FIG. 14, FIG. 15 is the same as that of the manufacturing method of Embodiment 1 and a modification, and is manufactured by injection molding. First, the some coaxial line 1 (11) which has a connector in both ends is prepared. The plurality of coaxial lines 1 (11) are usually arranged three-dimensionally. In the injection molding of the sealing part 3, the said coaxial line 11 is made to pass through the predetermined position of a shaping | molding die, and the predetermined part of the said coaxial line is arrange | positioned in a shaping | molding die. At that time, the molding die is heated to the melting point or more of the resin of the sealing portion 3, for example, (melting point + 30 ° C). Thereafter, the molten resin heated at about 200 ° C. is injected into the molding die via a gate serving as a resin inlet through a nozzle at a predetermined pressure. Thereafter, after cooling to a predetermined temperature below the melting point of the resin, for example, about 40 ° C, the resin is separated from the molding die.

In the manufacturing method of the coaxial wiring body 10 shown to FIGS. 3-5, the heating temperature of a shaping | molding die, and the temperature of resin of a molten state differ only from the case of the coaxial wiring body 10 of this embodiment.

(Embodiment 5)

It is a figure which shows the coaxial line 11 of the sealing part in the coaxial wiring body of Embodiment 5 of this invention. In this embodiment, the outer periphery of each coaxial line 1 is removed and the ring-shaped recessed part 1m is formed. In the bundled coaxial assembly 11, the recessed part 1m forms the horizontal opening space 11k which opens an exterior and a binding center part. FIG. 17A is a cross-sectional view of a portion where three coaxial lines 1 abut, and FIG. 17B is a cross-sectional view of a portion where four coaxial lines 1 abuts.

The solid line is a cross-sectional view of a portion deviating from the concave portion 1m, and in Figs. 17A and 17B, the gaps enclosed by the coaxial line are closed by the coaxial line, and are transverse to the outside (the direction perpendicular to the coaxial line). ) Is not opened. For this reason, even if it is going to inject resin from the outside and let it pass to a binding center, it is difficult to be blocked by the coaxial line itself, and to let it pass inside the bound coaxial line. In the absence of the concave portion 1m, the bundled coaxial line 11 has the same cross section as the cross-sectional view of the solid line in all parts. For this reason, if there is no concave portion 1m, it is difficult to pass through the bound coaxial line and form a gap filling portion. The closed gap in the bound coaxial line 11 continues along the coaxial direction, and when water enters this gap, the gap becomes a path of water.

In contrast, cross-sectional views of broken lines in FIGS. 17A and 17B are cross-sectional views passing through the concave portion 1m. As shown in the sectional view of the broken line, since the concave portion 1m exists, a horizontal opening space 11k leading to the inside of the coaxial line bound from the outside is formed. The transverse opening space 11k corresponds to the portion where the outer shell of the coaxial line 1 is removed in a ring shape. It becomes easy to inject resin from the outside to a binding center part through this horizontal opening space 11k. In the transverse opening space 11k, the space thickness between adjacent coaxial lines becomes thicker as the depth of the concave portion 1m is larger. That is, the path width of the transverse opening space 11k is increased, and the gap filling portion can be formed by injecting resin into the inside with a margin of small resistance. As a result, it is possible to eliminate the gap that may be a path of moisture.

The concave portion 1m is formed as follows. First, with respect to each coaxial line 1, the outer skin (jacket 1s etc.) of a coaxial line is removed, for example with a carbon dioxide gas laser, and the part which the ground line 1g is exposed is formed. At this time, the jacket or the like may not be completely removed, and the end of the concave portion 1m may be provided. The sealing part 3 is formed by inject | molding resin and arrange | positioning so as to pass through a metal mold | die so that this recessed part 1m may be included as mentioned above. At the time of injection molding, the resin passes through the transverse opening space 11k and reaches the binding center, so that a gap filling portion can be formed between all coaxial lines. As a result, a very robust waterproof coaxial wire assembly can be obtained.

(Embodiment 6)

It is a figure which shows the coaxial line 11 of the sealing part in the coaxial wire body of Embodiment 6 of this invention. In this embodiment, it has the feature that the convex part 1n which protrudes annularly in the outer periphery of each coaxial line 1 is provided. In the bound coaxial line assembly 11, although the adjacent coaxial line 1 contacts convex part 1n mutually, in other parts, since the convex part 1n exists, a space | gap arises. This void forms a horizontal opening space 11k which opens the outside and the binding center in the horizontal direction. In this embodiment, the horizontal opening space 11k can be formed in parts other than the convex part 1n, especially the part adjacent to the convex part 1n. The width between the coaxial lines of the transverse opening space 11k is wider as the height of the convex portion 1n is higher. For this reason, as the height of the convex portion 1n is higher, the resin can pass from the outside to the binding center with a small resistance during injection molding. As a result, a coaxial wiring body having high quality waterproof property can be obtained.

The coaxial line 1 which has convex part 1n is formed by coating resin which forms the convex part 1n in an outer periphery or an outer shell. This coating is preferably performed by applying a resin dissolved in a solvent. The resin which is unlikely to be dissolved in a general purpose solvent may be dispersed. Alternatively, all of the coaxial lines may be molded on the outer circumference of the coaxial line by injection molding. By the above method, the coaxial line to which the convex-shaped part was provided can be obtained simply, and the coaxial wire body in which the clearance gap filling part was formed reliably to the binding center part can be obtained using this coaxial line.

(Seventh Embodiment)

It is a figure which shows the flat knitted coaxial line 11h used for the coaxial wiring body in embodiment of this invention. In the flat knitted coaxial line 11h, the weaving thread 15 is alternately weaved and arrange | positioned so that it may cross | intersect (in the orthogonal direction) with respect to several parallel coaxial line 1. As a result, the coaxial line 1 and the weaving thread 15 become a warp and a weft thread, and take the form which forms a fiber. The coaxial line 1 may be anything. For example, silver-plated copper alloy wire (7 pieces, diameter 0.025mm, total outer diameter 0.075mm) as a signal line, Sumiflon (registered trademark) A (thickness 0.05mm, outer diameter 0.18mm) as an insulating layer, a ground line Tin-plated copper alloy wires (helical windings with a diameter of 0.03 mm each, 21 ± 2 pitches, 4.5 ± 1.5 mm pitch), and Sumiflon® A (thickness 0.04 mm, outer diameter 0.31 mm) for jackets. Each can be used. As the weaving thread 15, any insulating line may be used. For example, a polyester wire is used, and the dimension of the fabric is 10C of cores, 0.33 mm of line pitch standard, and 0.44 mm thickness standard. The width standard should be 3.40 mm.

FIG. 19 (b) is a diagram showing a coaxial wire assembly 10 in which the flat knitted coaxial line 11h is joined to form a coaxial assembly 11 and the sealing portion 3 is provided by injection molding of resin. to be. The O-ring 13 is disposed in the sealing portion 3 to form the sealing device S. In the formation of the sealing part 3, the flat knitted coaxial line 11h is reliably formed by the weaving thread 15, and forms the sealing part 3 through the gap. For this reason, resin can pass easily to the center of the united flat knitted coaxial line 11h. As a result, the inside of the sealing part 3 does not run short of resin, and improves the filling property of resin, and can prevent a hole etc ..

(Embodiment 8)

It is a figure which shows the method of manufacturing the coaxial wiring body in Embodiment 8 of this invention. 20 (a) shows a state in which a plurality of coaxial lines 11 are set in a molding die for forming the sealing portion 3. The mold part 61 corresponds to the range in which the sealing part 3 is not formed, and forms the part which the coaxial line 11 binds and exposes. The mold part 63 to be ejected for forming the sealing part 3 is sandwiched between the movable parts 65 from both sides with a space h. The movable part 65 binds the plurality of coaxial lines 11. FIG. 20 (b) shows a state in which the movable portion 65 is brought close to the frame portion 63 of the sealing portion, and the plurality of coaxial lines 11 are bent outward to expand. In other words, it shows the state which loosened several coaxial lines. By approaching the frame part 63 of the sealing part of the movable part 65, the void h changes (moves) to the outside of the movable part 65. In the state of FIG. 20B, injection molding of the resin is waited. In addition, the movable part 65 does not need to be provided in the both sides of the frame part 63 of a sealing part, and only one side may be provided.

Since the said movable part 65 hold | maintains the some coaxial line 11, before the resin injection, the some coaxial line 11 coat | covered with the sealing part 3 is curved as shown in FIG. Swell In other words, loosening occurs. When the outer diameters of the plurality of coaxial lines 11 of the caught and bound portions are Do, the outer diameters of the curved and expanded portions are D1, and D1> Do is satisfied. As a result, the clearance between coaxial lines can be enlarged in the periphery of outer diameter D1 compared with the part hold | maintained and bound. As a result, when the resin is injected, by introducing the resin into the interior through the gap, the filling property of the resin of the sealing portion 3 can be improved, and holes and the like can be prevented.

How much D1 is made from Do can be adjusted by the longitudinal dimension of the space | gap h. The movement distance, i.e., the length of the void h, may be, for example, about 0.5 mm to 1 mm. Fig. 21 slightly exaggerates the amount of swelling and shows D1 more excessively than Do. In the curved and expanded portion, the coaxial line 11 need not be axisymmetric with respect to the center axis lines of the plurality of coaxial lines 11, and as shown in FIG. 21, the coaxial line 1 near the center is It is common to bend to one side. The entirety of the plurality of coaxial lines 11 may be curved to one side. By bending and expanding, even if it curves to one side, the space | interval between coaxial lines will necessarily arise. This larger gap makes it easier for the resin to reach the center of the coaxial line.

(Example)

In order to verify the effect of MFR of resin which forms the sealing part 3 in Embodiment 4 of this invention, the coaxial wiring body 10 was actually manufactured and the filling property of the clearance gap of the coaxial wire was evaluated. The test bodies of the inventive examples and the comparative examples were prepared under the following conditions.

Comparative example: Coaxial 0.22 mm diameter x 40 pieces (total diameter 1.9 mm), resin ETFE of the sealing portion (Asahi Glass Co., Ltd. product name Fluon (registered trademark) -88AXMP)

Invention example: Coaxial 0.22 mm diameter x 40 pieces (total diameter 1.9 mm), resin EMAA (Nitsrel-made by Mitsui-Dupont Chemical Co., Ltd.) of the sealing part

Two types were used for EMAA. EMAA (1): Nucrel N1110H, and EMAA (2): Nucrel N1050H

EMAA (1) or Nucrel N1110H and EMAA (2) or Nucrel N1050H have the characteristics shown in Table 1 by MFR, respectively. For the comparative example and two examples of the present invention, five identical test bodies were prepared, respectively.

As the molding die, a mold suitable for a total diameter of 1.9 mm is used, and in the comparative example, the molding die is heated to 290 ° C, and in the example of the present invention, the molding die is heated to 130 ° C to inject resin in a molten state into the molding die, respectively. It was. Then, it cooled to 40 degreeC and isolate | separated the shaping | molding die. The cross section of the sealing part 3 of each test body was extract | collected 3 places with respect to 1 test body, and it observed with the optical microscope. The results are shown in Table 1. MFR shown in Table 1 is MFR according to JIS K7210 at the temperature of 190 degreeC, and a nominal load of 2.16 kg about EMAA, and MFR according to ASTM D-3159 about ETFE.

According to Table 1, the magnitude of the gap generation in the coaxial gap can be summarized by MFR. ETFE with an MFR of 20 g / 10 min generated many voids in the coaxial gap. As for frequency, all 5 test bodies showed the space | gap in any one of three cross sections. Therefore, evaluation is "x". In EMAA (1) having an MFR of 100 g / 10 min, a void was recognized in one of three cross sections for one of five test bodies. Evaluation is "(circle)". The best one was EMAA (2) with 500g / 10min of MFR, and all 5 specimens showed no voids. Evaluation is "◎".

From the above results, by using the resin having the MFR of 50 g / 10 min or more in the sealing portion, all of the gaps of the coaxial lines can be filled with the resin, and a high level of waterproofness excellent in durability can be obtained.

In the above, although embodiment of this invention was described, embodiment of this invention disclosed above is an illustration to the last, The scope of this invention is not limited to embodiment of these invention. The scope of the present invention is shown by description of a claim, and also includes the meaning of equality with the description of a claim, and all the changes within a range.

(Industrial availability)

According to the coaxial wiring body of the present invention, the number of parts can be reduced while ensuring waterproofness at the insertion port of the housing case, miniaturizing and simplifying the hinge and its surrounding structure. In addition, by using a resin having a large MFR as a sealing portion, even if the number of coaxial wires is very large, the resin can be reliably filled up to the center, and a high level of waterproofness excellent in durability can be obtained.

1: coaxial line
1a: signal line
1d: insulation layer
1g: ground wire
1m: concave
1n: convex
1s: jacket
3: seal
3a: sealing surface
3b: O-ring groove bottom
3j: gap charging part
3s: periphery
10: coaxial wiring board
11: assembly of coaxial lines
11h: flat knit coaxial
11k: landscape opening space
11s: Peroflon Tape
13: O ring
15: weaving thread
19: connector
20: key operating side housing case
21: key control panel
25: Space in the key operating side housing case
30: display part side housing case
31: display unit
40: hinge
41: hinge center cover
50: mobile phone
61: forming mold
63: frame part of the seal
65: movable part of the molding die
A: X-axis rotary shaft mechanism storing part
B: wiring body accommodating part
h: Air gap (moving stroke) of the movable part of a molding die
S: sealing device

Claims (20)

A plurality of coaxial lines,
Seals formed to be integrated with the plurality of coaxial lines
Provided with
The sealing portion,
A gap charging unit for filling the gaps between the plurality of coaxial lines;
Having peripheral portions surrounding the plurality of coaxial lines
A coaxial wire assembly, characterized in that.
The method of claim 1,
In the part in which the said sealing part of the said coaxial line was formed, the concave shape which removed the outer periphery of the said coaxial line or the convex shape which protrudes so as to cover an outer periphery is provided, and the said concave shape or convex of each coaxial line between the said some integrated coaxial line A coaxial wiring body is formed so that a transverse opening space is opened by the shape portion to be opened to the outside, and the sealing portion passes through the transverse opening space.

The method of claim 1,
The plurality of coaxial lines is a flat woven coaxial wire having weaving threads that alternately weave the plurality of coaxial lines,
The flat knitted coaxial line is agglomerated in a shape of a flat woven strip or in a ring or spiral form,
The sealing portion is formed to pass through the gap of the coaxial line formed by the weaving thread
Coaxial wiring body characterized in that.
The method of claim 1,
The plurality of coaxial lines of the portion where the sealing portion is formed are curved to swell apart from each other to form a swelling spaced apart portion,
The sealing portion is formed to pass between the coaxial lines of the swelling separation portion
Coaxial wiring body characterized in that.
The method according to any one of claims 1 to 4,
A coaxial wire assembly, wherein a groove for accommodating an O-ring is provided on an outer circumference of the periphery of the sealing portion.
The method according to any one of claims 1 to 4,
The outer circumferential surface of the peripheral part of the said sealing part makes a sealing surface, The coaxial wiring body characterized by the above-mentioned.
The method according to any one of claims 1 to 6,
The resin for forming the sealing portion has a MFR (melt flow rate (JIS K7210)) at a temperature of 190 ° C. and a nominal load of 2.16 kg of 50 g / 10 min or more.
The method according to any one of claims 1 to 7,
The resin for forming the sealing portion is a resin having a lower melting point than the resin of the coaxial jacket.

The method according to any one of claims 1 to 8,
The coaxial wire assembly is characterized in that the coaxial line and the sealing portion are not fused at the contact surface.
The method according to any one of claims 7 to 9,
The resin for forming the sealing portion is an ethylene-methacrylic acid copolymer resin (EMAA resin).
The method according to any one of claims 1 to 6,
The resin for forming the sealing portion is the same resin as the insulating layer which insulates the signal line and the ground line of the coaxial line, or a resin having a lower melting point than the resin of the insulating layer.
The method of claim 10,
The resin forming the sealing portion is the same resin as the jacket of the coaxial line, or a resin having a higher melting point than the resin of the jacket.
The method according to claim 11 or 12,
The resin for forming the sealing portion is PFA (tetrafluoroethylene perfluoroalkyl vinyl ether copolymer) or ETFE (tetrafluoroethylene ethylene copolymer).
The method according to any one of claims 1 to 13,
In the sealing portion, the plurality of coaxial lines are in a flat arrangement in a planar shape, or in a bundle array bundled in a cross-sectional circle shape or an elliptic shape.
The method according to any one of claims 1 to 14,
The said sealing part is provided in one place or two places, The coaxial wiring body characterized by the above-mentioned.

The coaxial wiring body as described in any one of Claims 1-15 was used, The electronic device characterized by the above-mentioned.
A method of manufacturing a coaxial wire assembly having a plurality of coaxial lines and a sealing portion formed to be integrated with the plurality of coaxial lines,
Preparing a molding die,
Heating the molding die to a temperature equal to or higher than the melting point of the resin of the sealing portion, while setting the plurality of coaxial lines in the molding die;
Injecting a molten resin forming the seal into the molding die;
Cooling the mold to a predetermined temperature below the melting point of the resin while injection molding the resin of the sealing portion
The manufacturing method of the coaxial wiring body characterized by the above-mentioned.
The method of claim 17,
And providing a concave portion from which the outer periphery of the coaxial line is removed or a convex portion protruding to cover the outer periphery, in a portion forming the sealing portion of each of the plurality of coaxial lines. Manufacturing method.
The method of claim 17,
The plurality of coaxial lines, a flat knitted coaxial line having a weaving thread that alternately weaved a plurality of coaxial lines, the flat knitted coaxial lines being flat knitted bands, or agglomerated in a ring or spiral shape It sets to a metal mold | die, The manufacturing method of the coaxial wiring body characterized by the above-mentioned.
The method of claim 17,
In the molding die, movable to change the distance to the mold part to be ejected by grasp the plurality of coaxial lines on both sides or one side adjacent to the mold part to inject the resin for forming the sealing portion When a part is provided and a plurality of coaxial lines are set in a molding die, a movable part is separated from the frame part which catches a plurality of coaxial lines, and is close to the frame part which injects the said movable part before injecting the resin. Wherein the plurality of coaxial lines are bent so as to be spaced apart from each other to expand and form a bulging spaced portion.

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