JP2005259598A - Extra-fine coaxial cable assembly, and terminal structure of extra-fine coaxial cable assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To promote downsizing of a cellular phone 23 by making a mounting area of a first connector 49 smaller in the terminal structure of an extra-fine coaxial cable assembly and an extra-fine coaxial cable which are used as wiring materials in electric equipments such as a cellular phone, a digital camera, and a notebook computer. <P>SOLUTION: This is the extra-fine coaxial cable assembly which has the extra-fine coaxial cables 39 and as many first connection patterns 45 on both face sides, and at one end part of the extra-fine coaxial cables 39 with which the base terminal part 45a of the multiple first connection patterns 45 is in the corresponding relationship, this is provided with a first flexible circuit board 43 which are constituted to be electrically connected respectively, and provided with a first connector 49 for the exclusive use for the flexible circuit board which is installed on the surface of the first flexible circuit board 43, and in which respective ones are constituted respectively to be electrically connected to the tip part 45b of the first connection pattern 45 which is in corresponding relationship with multiple first pattern side terminals 51. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a micro coaxial cable assembly used as a wiring material in an electric device such as a mobile phone, a digital camera, and a laptop computer, and a terminal structure of the micro coaxial cable.

  In recent years, in electrical devices such as mobile phones, digital cameras, and notebook computers, a micro coaxial cable assembly that is less affected by noise is used as a wiring material for reasons such as increasing the resolution of a liquid crystal display unit of the electrical device. It has become like this.

  Next, a general micro coaxial cable assembly will be described with reference to FIGS. Here, FIG. 5 is a diagram showing a general micro coaxial cable, and FIG. 6 is a cross-sectional view of the micro coaxial cable.

  As shown in FIG. 5, a general micro coaxial cable assembly 1 is used to electrically connect a first electronic component (not shown) and a second electronic component (not shown) in an electric device such as a mobile phone. A plurality of micro coaxial cables 3 assembled. As shown in FIG. 6, the micro coaxial cable 3 includes a center conductor 5, an insulating layer 7 that covers the center conductor 5, and a lateral winding that is provided on the outer periphery of the insulating layer 7 and shields the center conductor 5. An outer conductor 9 and a sheath 11 covering the periphery of the laterally wound outer conductor 9 are provided. Here, the outer diameter of the micro coaxial cable 3 is mainly about 0.3 mm.

  As shown in FIG. 5, a first connector 13 dedicated to the fine coaxial cable is connected to one end of the multiple fine coaxial cables 3, and the first connector 13 is a first connector in the first electronic component. The mating connector 15 can be fitted. A second connector 17 dedicated to the fine coaxial cable is connected to the other end of the multiple fine coaxial cables 3, and the second connector 17 is connected to the second mating connector 19 in the second electronic component. Can be mated. Here, the connection pitch of the micro coaxial cable 3 in the first connector 13 and the second connector 17 is mainly 0.4 mm.

In addition, there exists a thing shown to patent document 1 as a prior art relevant to this invention.
JP 2003-123552 A

  By the way, with the increase in the transmission capacity of the electrical equipment, the number of micro coaxial cables 3 in the micro coaxial cable assembly 1 tends to increase. On the other hand, considering the outer diameter of the micro coaxial cable 3, it is extremely difficult to reduce the connection pitch of the first connector 13 and the second connector 17 to less than 0.4 mm. Therefore, when the number of the micro coaxial cables 3 in the micro coaxial cable assembly 1 increases (for example, exceeds 30), the width of the first connector 13 or the second connector 17 increases, and the first connector 13 or the second connector. There is a problem that the mounting area of 17 becomes large and becomes an obstacle to miniaturization of the electric device.

In the invention described in claim 1, in the micro coaxial cable assembly used for electrically connecting the first electronic component and the second electronic component in the electrical equipment,
A large number of assembled micro coaxial cables;
There are as many first connection patterns as the micro coaxial cables on both sides, and the base ends of the plurality of first connection patterns are electrically connected to one end portions of the micro coaxial cables in a corresponding relationship, respectively. A first flexible circuit board configured to:
The front end portion of the first connection pattern, which is provided on the surface of the first flexible circuit board, has the same number of first pattern side terminals as the micro coaxial cable, and a plurality of the first pattern side terminals have a corresponding relationship. A first connector dedicated to a flexible circuit board, which is configured to be electrically connected to each other and can be fitted to a first mating connector in the first electronic component;
The same number of second connection patterns as the micro coaxial cable are provided on both sides, and the base ends of the plurality of second connection patterns are electrically connected to the other end portions of the micro coaxial cable, which have a corresponding relationship, respectively. A second flexible circuit board configured as follows;
The tip end portion of the second connection pattern provided on the surface of the second flexible circuit board, having the same number of second pattern side terminals as the micro coaxial cable, and a plurality of the second pattern side terminals in a corresponding relationship. And a second connector dedicated to a flexible circuit board that can be electrically connected to the second mating connector of the second electronic component.

  According to the invention specific matter described in claim 1, the first flexible circuit board has the same number of first connection patterns as that of the micro coaxial cable on both sides of the first flexible circuit board. Since the first pattern side terminal is configured to be electrically connected to the distal end portion of the first connection pattern in a corresponding relationship, even if the number of the micro coaxial cables in the micro coaxial cable assembly increases, The expansion of the width of the first connector can be sufficiently suppressed, and the width of the first flexible circuit board can be reduced.

  Similarly, the second flexible circuit board has the same number of second connection patterns as the micro coaxial cable on both sides of the second flexible circuit board, and the second connector has a plurality of second pattern side terminals corresponding to each other. Therefore, even if the number of the micro coaxial cables in the micro coaxial cable assembly increases, the width of the second connector can be increased. While being able to suppress enough, the width | variety of a said 2nd flexible circuit board can be made small.

In the invention according to claim 2, in addition to the matters specifying the invention according to claim 1, it is provided on both surfaces of the first flexible circuit board, and is sandwiched between the outer conductors of a large number of the micro coaxial cables. A pair of first ground bars electrically connected to each other;
A pair of second ground bars provided on both surfaces of the second flexible circuit board and electrically connected so as to be sandwiched between the outer conductors of the multiple micro coaxial cables. .

  According to the invention specific matter of the second aspect, in addition to the action of the invention specific matter of the first aspect, the pair of the first ground bars and the pair of the second ground bars include a plurality of the micro coaxial cables. Therefore, the tensile strength of a large number of the fine coaxial cables is increased.

In the invention according to claim 3, in the terminal structure of the micro coaxial cable assembly formed by assembling a large number of micro coaxial cables,
It has the same number of connection patterns as the micro coaxial cable on both sides, and is configured to be electrically connected to the end portions of the micro coaxial cable in which the base ends of the plurality of connection patterns are in a corresponding relationship. A flexible circuit board;
Provided on the surface of the flexible circuit board, having the same number of pattern-side terminals as the micro-coaxial cable, so that a large number of the pattern-side terminals are electrically connected to the distal end portions of the connection patterns in a corresponding relationship. And a connector dedicated to a flexible circuit board that can be fitted to a mating connector in an electronic component.

  According to the invention specific matter of claim 3, the same number of connection patterns as the micro coaxial cable are provided on both sides of the flexible circuit board, and the connector corresponds to a large number of the pattern side terminals. Since it is configured to be electrically connected to the distal end portion of the connection pattern in the relationship, even if the number of the micro coaxial cables in the micro coaxial cable assembly increases, the expansion of the width of the connector is sufficiently suppressed. And the width of the flexible circuit board can be reduced.

  In the invention of claim 4, in addition to the invention specific matter of claim 3, it is provided on both surfaces of the flexible circuit board so as to be sandwiched between the outer conductors of a large number of the micro coaxial cables. A pair of electrically connected ground bars;

  According to the invention specific matter of the fourth aspect, in addition to the action of the invention specific matter of the third aspect, the pair of ground bars are electrically connected so as to be sandwiched between the outer conductors of the multiple micro coaxial cables. Since they are connected, the tensile strength of a large number of the micro coaxial cables is increased.

  According to the first aspect of the present invention, even if the number of the micro coaxial cables in the micro coaxial cable assembly is increased, the expansion of the width of the first connector and the second connector can be sufficiently suppressed. The mounting area of the first connector and the second connector can be reduced, and the downsizing of the electric device can be promoted.

  Further, since the widths of the first flexible circuit board and the second flexible circuit board can be reduced even if the number of the micro coaxial cables in the micro coaxial cable assembly is increased, the narrow space of the electric device is used. The micro coaxial cable assembly can be mounted.

  In the invention described in claim 2, in addition to the effects of the invention described in claim 1, the tensile strength of the multiple micro coaxial cables is increased, so that the mechanical characteristics of the micro coaxial cable assembly are increased. As a result, the quality of the micro coaxial cable assembly is improved.

  According to the third aspect of the present invention, since the expansion of the width of the connector can be sufficiently suppressed even when the number of the micro coaxial cables in the micro coaxial cable assembly increases, the mounting area of the connector can be reduced. Thus, it is possible to promote downsizing of the electric device.

  Further, since the width of the flexible circuit board can be reduced even if the number of the micro coaxial cables in the micro coaxial cable assembly is increased, the micro coaxial cable assembly can be used by utilizing a narrow space of the electric device. Can be installed.

  In the invention described in claim 4, in addition to the effects of the invention described in claim 3, the tensile strength of the multiple micro coaxial cables is increased, so that the mechanical characteristics of the micro coaxial cable assembly are increased. As a result, the quality of the micro coaxial cable assembly is improved.

  The best mode of the present invention will be described with reference to FIGS.

  Here, FIG. 1 is a diagram showing a micro coaxial cable assembly according to the best mode, FIG. 2 is a diagram showing a first terminal structure according to the best mode, and FIG. 3 is a diagram showing the best mode. FIG. 4 is a perspective view showing a mobile phone according to the best mode.

  As shown in FIGS. 1 and 4, the micro coaxial cable assembly 21 according to the best mode electrically connects a first substrate 25 as a first electronic component and a second substrate 27 as a second electronic component in a cellular phone 23. A cable assembly used to connect to the cable. Before describing the specific configuration of the micro coaxial cable assembly 21, the configuration of the mobile phone 23 will be briefly described.

  The mobile phone 23 includes a first housing 29 containing the first substrate 25, a second housing 31 containing the second substrate 27, and a hinge portion 33 connecting the first housing 29 and the second housing 31. The second casing 31 is rotatable about the two rotation axes S1 and S2 with respect to the first casing 29 by the hinge portion 33. The first board 25 includes a first mating connector 35 (see FIG. 1), and the second board 27 includes a second mating connector 37 (see FIG. 1). Note that a liquid crystal display LCD is connected to the second substrate 27.

  Next, a specific configuration of the micro coaxial cable assembly 21 according to the best mode will be described.

  The micro coaxial cable assembly 21 is a collection of a large number of micro coaxial cables 39. The micro coaxial cable 39 has the same configuration as that of the micro coaxial cable 3 (see FIG. 6) described above, An insulating layer 7 covering the central conductor 5, a laterally wound outer conductor 9 provided on the outer periphery of the insulating layer 7 and shielding the central conductor 5, and a sheath 11 covering the laterally wound outer conductor 9. (See FIG. 6).

  The micro coaxial cable assembly 21 includes a first terminal structure (terminal structure in the micro coaxial cable assembly) 41 on one end side.

  That is, the first flexible circuit board 43 is connected to one end side of the multiple micro coaxial cables 39, and the same number of first connection patterns as the micro coaxial cables 39 are provided on both side surfaces of the first flexible circuit board 43. 45. And the 1st flexible circuit board 43 is comprised so that the base end part 45a of many 1st connection patterns 45 may each be electrically connected to the one end part of the micro coaxial cable 39 in which it has a corresponding relationship.

  A pair of first ground bars 47 are respectively provided on both surfaces (front and back surfaces) of the first flexible circuit board 43, and the pair of first ground bars 47 is formed by the outer conductors 9 of the multiple micro coaxial cables 39. It is electrically connected so as to sandwich it.

  On the surface of the first flexible circuit board 43, a first connector 49 dedicated to a flexible circuit board that can be fitted to the first mating connector 35 on the first board 25 is mounted. The first connector 49 is a micro coaxial cable. There are as many first pattern side terminals 51 and first mating connector side terminals 53 as 39. And the 1st connector 49 is comprised so that many 1st pattern side terminals 51 may be electrically connected to the front-end | tip part 45b of the 1st connection pattern 45 which has a corresponding relationship. A first fitting portion formed on a part of the first flexible circuit board 43 may be used instead of the first connector 49 dedicated to the flexible circuit board.

  Similarly, the micro coaxial cable assembly 21 includes a second terminal structure (terminal structure in the micro coaxial cable assembly) 55 on the other end side.

  That is, the second flexible circuit board 57 is connected to the other end of the multiple micro coaxial cables 39, and the same number of second connections as the micro coaxial cables 39 are connected to both side surfaces of the second flexible circuit board 57. A pattern 59 is provided. And the 2nd flexible circuit board 57 is comprised so that the base end part 59a of many 2nd connection patterns 59 may each be electrically connected to the one end part of the micro coaxial cable 39 with a corresponding relationship.

  A pair of second ground bars 61 are provided on both surfaces (front surface and back surface) of the second flexible circuit board 57, respectively. The pair of second ground bars 61 are the outer conductors 9 of the multiple micro coaxial cables 39. It is electrically connected so as to sandwich it.

  On the surface of the second flexible circuit board 57, a second connector 63 dedicated to the flexible circuit board that can be fitted to the first mating connector 35 in the first board 25 is mounted. The second connector 63 is a micro coaxial cable. There are as many second pattern side terminals 65 and second mating connector side terminals 67 as 39. And the 2nd connector 63 is comprised so that many 2nd pattern side terminals 65 may be electrically connected to the front-end | tip part 59b of the 2nd connection pattern 59 which has a correspondence. Note that a second fitting portion formed on a part of the second flexible circuit board 57 may be used instead of the second connector 63 dedicated to the flexible circuit board.

  Next, the operation of the best mode will be described.

  The first flexible circuit board 43 has the same number of first connection patterns 45 as the micro coaxial cable 39 on both surface sides, and the first connector 49 has a large number of first pattern side terminals 51 corresponding to each other. Since it is configured to be electrically connected to the tip 45b of the first connection pattern 45, the width of the first connector 49 is sufficiently increased even if the number of the micro coaxial cables 39 in the micro coaxial cable assembly 21 is increased. And the width of the first flexible circuit board 43 can be reduced.

  Similarly, the second flexible circuit board 57 has the same number of second connection patterns 59 as the micro coaxial cable 39 on both sides, and the second connector 63 corresponds to many second pattern side terminals 65. Since it is configured to be electrically connected to the distal end portion 59b of the second connection pattern 59 in the relationship, even if the number of the micro coaxial cables 39 in the micro coaxial cable assembly 21 is increased, the width of the second connector 63 is increased. Enlargement can be sufficiently suppressed, and the width of the second flexible circuit board 57 can be reduced.

  Further, since the pair of first ground bars 47 and the pair of second ground bars 61 are electrically connected so as to be sandwiched between the outer conductors 9 of the multiple micro coaxial cables 39, Increases tensile strength.

  As described above, according to the best mode, even if the number of the micro coaxial cables 39 in the micro coaxial cable assembly 21 is increased, the expansion of the widths of the first connector 15 and the second connector 63 can be sufficiently suppressed. The mounting area of the first connector 15 and the second connector 63 can be reduced, and the mobile phone 23 can be reduced in size.

  Further, even if the number of the micro coaxial cables 39 in the micro coaxial cable assembly 21 is increased, the width of the first flexible circuit board 43 and the second flexible circuit board 57 can be reduced, so that the narrow space of the mobile phone 23 is used. Thus, the micro coaxial cable assembly 21 can be mounted.

  Furthermore, since the tensile strength of the multiple micro coaxial cables 39 is increased, the mechanical characteristics of the micro coaxial cable assembly 21 are improved, and the quality of the micro coaxial cable assembly 21 is improved.

  The present invention is not limited to the description of the best mode of the invention described above, and can be implemented in various other modes by making appropriate modifications.

It is a figure which shows the micro coaxial cable assembly concerning the best form. It is a figure which shows the 1st terminal structure concerning the best form. It is a figure which shows the 2nd terminal structure concerning the best form. It is a perspective view which shows the mobile telephone concerning the best form. It is a figure which shows a general micro coaxial cable. It is sectional drawing of a microfine coaxial cable.

Explanation of symbols

21 micro coaxial cable assembly 23 mobile phone 35 first mating connector 37 second mating connector 39 micro coaxial cable 43 first flexible circuit board 45 first connection pattern 47 first ground bar 49 first connector 51 first pattern side terminal 57 first 2 flexible circuit board 59 second connection pattern 61 second ground bar 63 second connector 65 second pattern side terminal

Claims (4)

In a micro coaxial cable assembly used to electrically connect a first electronic component and a second electronic component in an electrical device,
A large number of assembled micro coaxial cables;
There are as many first connection patterns as the micro coaxial cables on both sides, and the base ends of the plurality of first connection patterns are electrically connected to one end portions of the micro coaxial cables in a corresponding relationship, respectively. A first flexible circuit board configured to:
The front end portion of the first connection pattern, which is provided on the surface of the first flexible circuit board, has the same number of first pattern side terminals as the micro coaxial cable, and a plurality of the first pattern side terminals have a corresponding relationship. A first connector dedicated to a flexible circuit board, which is configured to be electrically connected to each other and can be fitted to a first mating connector in the first electronic component;
The same number of second connection patterns as the micro coaxial cable are provided on both sides, and the base end portions of the plurality of second connection patterns are electrically connected to the other end portions of the micro coaxial cables in a corresponding relationship, respectively. A second flexible circuit board configured as follows;
The tip end portion of the second connection pattern provided on the surface of the second flexible circuit board, having the same number of second pattern side terminals as the micro coaxial cable, and a plurality of the second pattern side terminals in a corresponding relationship. And a second connector dedicated to a flexible circuit board that can be electrically connected to the second mating connector of the second electronic component; and a micro coaxial cable comprising: assembly. A pair of first ground bars provided on both surfaces of the first flexible circuit board and electrically connected so as to be sandwiched between the outer conductors of the multiple micro coaxial cables;
A pair of second ground bars provided on both surfaces of the second flexible circuit board and electrically connected so as to be sandwiched between the outer conductors of the multiple micro coaxial cables. The micro coaxial cable assembly according to claim 1. In the terminal structure of a micro coaxial cable assembly formed by assembling a large number of micro coaxial cables,
It has the same number of connection patterns as the micro coaxial cable on both sides, and is configured to be electrically connected to the end portions of the micro coaxial cable in which the base ends of the plurality of connection patterns are in a corresponding relationship. A flexible circuit board;
Provided on the surface of the flexible circuit board, having the same number of pattern-side terminals as the micro-coaxial cable, so that a large number of the pattern-side terminals are electrically connected to the distal end portions of the connection patterns in a corresponding relationship. And a connector dedicated to a flexible circuit board that can be fitted to a mating connector in an electronic component; and a terminal structure of an ultrafine coaxial cable assembly. A pair of ground bars provided on both surfaces of the flexible circuit board and electrically connected so as to be sandwiched between outer conductors of a plurality of the micro-coaxial cables, respectively, The terminal structure of the described micro coaxial cable assembly.

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