JP2009087685A - Coaxial cable harness and connection structure of coaxial cable harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coaxial cable harness which can make thinner an appliance on which the harness is mounted and provide a connection structure of the coaxial cable harness. <P>SOLUTION: The coaxial cable harness 10 is made of a plurality of coaxial cables 11 of which one end portion 12 and the other end portion 13 undergo a termination treatment, and intermediate portions 13 between the one end portion 12 and the other end portion 13 of each of the coaxial cables 11 are arranged unfastened in a free bending on a plane shape in different length. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coaxial cable used for electrical connection of a slide-type cellular phone or the like having two substrates connected so as to be movable relative to each other and electrically connecting these substrates using a coaxial cable. The present invention relates to a harness and its connection structure.

  In order to meet the demands for miniaturization, a slide-type mobile phone is composed of two cases that are slidably connected to each other. It is possible to make it the state which overlapped. The two housings are provided with substrates on which various circuits and elements are arranged, and the positional relationship between the substrates changes according to the operation of each housing. A bendable flexible printed circuit board (FPC) is generally used for electrical connection between substrates (see, for example, Patent Document 1).

As shown in FIG. 7, the connector 101 provided on the lower substrate 100 and the connector 103 provided on the upper circuit module 102 are connected by the FPC 104. On one side of the FPC 104, a ground conductor layer is formed on substantially the entire surface in consideration of securing a ground conductor and taking measures against EMI.
Japanese Patent Laid-Open No. 2004-88020

  However, in the case of an FPC having a ground conductor layer, there is a possibility that a break may occur at the bent portion and the wire may be disconnected according to the slide of the substrate. Therefore, the ground conductor is partially removed at the bent portion, and the ground conductor is arranged on the back side so as not to face the signal line. However, in order to arrange and bend the FPC with the ground conductor layer between the upper and lower substrates, a certain amount of gap is required between the substrates. Therefore, it has been difficult to reduce the thickness of the device.

  An object of the present invention is made in view of the above-described circumstances, and is to provide a coaxial cable harness and a connection structure thereof that can reduce the thickness of a device to be mounted.

  In order to achieve the above-described object, a coaxial cable harness according to the present invention is a coaxial cable harness in which one end portion and the other end portion of a plurality of coaxial cables are terminated and bent in a U shape. The intermediate portion between the one end portion and the other end portion of the coaxial cable is non-bundled, and is arranged in a non-uniform length and in a planar shape so that the outer cable is longer than the inner cable. It is said.

  According to the coaxial cable harness configured as described above, the intermediate portion between the one end portion and the other end portion of the coaxial cable is non-bundled, and the outer cable is longer than the inner cable, and is not equal in length and planar. Is arranged. Thereby, for example, when a pair of relatively slidable substrates are connected by this coaxial cable harness, the coaxial cable is displaced in the plane along with the slide, so that the gap between the substrates can be thinned and mounted. The device can be thinned. In addition, when a plurality of coaxial cables are used, for example, arranged in two stages, the horizontal width of the coaxial cable harness can be reduced by being bent in a U shape, so that the entire device can be downsized. Termination means that one end and the other end of a coaxial cable are connected to a connector, or the pitch of each coaxial cable is fixed so that it can be directly attached to a substrate, and the central conductor of the coaxial cable is exposed. .

  In the coaxial cable harness according to the present invention, it is preferable that the one end portion and the other end portion of the coaxial cable are arranged in a bifurcated or laterally flat shape.

  In the coaxial cable harness connection structure according to the present invention, the one end is connected to the first casing, and the other end is slidably connected to the first casing. 2 is connected to the housing side.

  According to the coaxial cable harness connection structure configured as described above, the gap between the two substrates is thin due to the structure of the coaxial cable harness, so that the apparatus can be thinned.

  According to the coaxial cable harness and the connection structure thereof according to the present invention, it is possible to provide a coaxial cable harness and a connection structure thereof that can reduce the thickness of equipment to be mounted.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  1 to 6 show an embodiment of a coaxial cable harness according to the present invention. FIG. 1 is a partially broken plan view of a cellular phone to which the coaxial cable harness according to an embodiment of the present invention is applied. 1 is a partially broken right side view of FIG. 1, FIG. 3 is a right side view of the first housing of FIG. 1, FIG. 4 is a rear view of the first housing of FIG. 3, and FIG. FIG. 6 is a partially cutaway right side view of FIG. 5.

  As shown in FIGS. 1 and 2, the coaxial cable harness 10 includes a plurality of coaxial cables 11, one end side termination processing unit 12 that is terminated on one end side of the coaxial cable 11, and the coaxial cable 11. And the other end side termination processing unit 13 terminated on the other end side. The coaxial cable harness 10 is applied to a mobile phone 1 including a first casing 2 and a second casing 3 slidably connected to the first casing 2.

  The coaxial cable 11 is formed by bending and aligning a bendable fine coaxial cable such as AWG 44 according to the AWG (American Wire Gauge) standard in a planar shape. The coaxial cable 11 has a short inner diameter portion 15 in the intermediate portion 14 between the one end side termination processing portion 12 and the other end side termination processing portion 13 and a length of the outer diameter portion 16. Are arranged in a long, non-equal length, and are arranged in a U-shape so as to be freely bent without being bundled with a bundle tape or the like.

  The one end side termination processing unit 12 is connected to one end side connector 17, and this one end side connector 17 is a lateral type and has a fitting port 18 on the front side. The other end side termination processing unit 13 is connected to the other end side connector 19, and the other end side connector 19 is a horizontal type, and the back side is a fitting port 20. The term “sideways” as used herein means that the direction of the length direction of the connector is parallel to the length direction of the coaxial cable (the direction along the straight line portion of the U-shape), that is, the end of the coaxial cable is 90 degrees at the connection portion with the connector. The case where it is bent.

  In addition, the one end side connector 17 and the other end side connector 19 are connected to the connector by binding the end portions of the plurality of coaxial cables 11 into two forks instead of the above. Also good. In this case, there are a case where the connection is divided into two separate connectors, and a case where the connection is divided into two stages and connected to one connector having a two-stage configuration. Further, the one end side termination processing unit 12 and the other end side termination processing unit 13 may be ones in which the outer conductor of each coaxial cable is connected to a ground bar (not shown) without connecting a connector. .

  The mobile phone 1 is provided with a display 4 and a receiving speaker (not shown) on the surface of the first casing 2, and a keyboard 5 and a transmitting microphone (not shown) on the surface of the second casing 3. And is carried in a state where the first housing 2 is stacked on the second housing 3.

  Since a slide mechanism (not shown) is assembled between the first casing 2 and the second casing 3, the first casing 2 is moved in the length direction with respect to the second casing 3. By pressing the first casing 2, the first casing 2 is slid and locked, for example, by about 45 mm to the use state position (see FIG. 5) where the keyboard 5 of the second casing 3 is exposed.

  A circuit board 6 is provided on the back surface of the first housing 2, and the fitting port 18 of the one end side connector 17 is fitted and connected to a mating connector (not shown) provided on the circuit board 6. Is done. The one end connector 17 is arranged on the left side in FIG.

  A circuit board 7 is provided on the surface of the second housing 3, and the fitting port 20 of the other end side connector 19 is fitted to a mating connector (not shown) provided on the circuit board 7. Connected. The other end side connector 19 is arranged on the right side in FIG.

  As shown in FIGS. 3 and 4, a harness housing portion 8 having a concave shape from the circuit board 6 side toward the upper end portion is formed at the center of the back surface of the first housing 2. An intermediate portion 14 of the coaxial cable harness 10 is accommodated in the portion 8 so as to be movable in the vertical direction in the figure.

  At this time, the intermediate portion 14 of the coaxial cable 11 accommodated in the harness accommodating portion 8 is aligned in a planar shape in a state bent in a U shape, and therefore, sufficient in the depth dimension of the harness accommodating portion 8. Contained with room. Therefore, for example, even if a plurality of three coaxial cable harnesses 10 are stacked in three stages and used, the intermediate portion 14 does not jump out of the harness housing portion 8.

  As a manufacturing method of the coaxial cable harness 10, for example, a manufacturing method disclosed in Japanese Patent Application Laid-Open No. 2005-235690 is used.

  In the manufacturing method described above, an alignment jig formed of a rectangular block having a flat alignment surface is used, and a plurality of wire storage grooves having different lengths are formed on the alignment surface. The electric wires are pushed into the electric wire storage grooves to be aligned, and the electric wires are taken out from the alignment jig in a state where the aligned state is maintained. Thereby, in the intermediate part 14 of the coaxial cable 11, the coaxial cable harness 10 in which the length of the inner diameter part 15 inside thereof is short and the length of the outer diameter part 16 is long can be manufactured. .

Next, the operation of the coaxial cable harness 10 will be described with reference to FIGS. 5 and 6.
As shown in FIGS. 5 and 6, in the mobile phone 1, the first casing 2 is pressed in the length direction against the second casing 3, whereby the keyboard 5 of the second casing 3. The first housing 2 slides and moves toward a use state in which is exposed. At this time, the one end side connector 17 of the coaxial cable harness 10 moves upward in FIG. 5 with respect to the other end side connector 19.

  At that time, in the coaxial cable 11 having an unequal length, the bent portion of the intermediate portion 14 approaches the one end side connector 17 in the harness accommodating portion 8.

  When the first casing 2 slides to a predetermined position in use, the first casing 2 is locked with respect to the second casing 3. This state is a state where the bent portion of the intermediate portion 14 is in a position closest to the one end side connector 17. And the intermediate part 14 is hold | maintained in the state arrange | positioned planarly in the harness accommodating part 8. FIG.

  Conversely, when the first housing 2 slides back to a predetermined unused position that overlaps the second housing 3, the one-end connector 17 moves away from the bent portion of the intermediate portion 14. It moves to. The intermediate portion 14 is held in the harness accommodating portion 8 in a state of being arranged in a plane at a substantially intermediate position between the one end side connector 17 and the other end side connector 19.

  The coaxial cable harness according to the present invention is not limited to the above-described embodiments, and can be appropriately modified and improved. For example, instead of the AWG 44, a coaxial cable such as an AWG 46 type may be used as the coaxial cable.

  As described above, the coaxial cable harness and the connection structure thereof according to the present invention are a slide type that uses two or more coaxial cables to electrically connect two substrates connected so as to be slidable. It can be used for mobile phones.

1 is a partially broken plan view of a mobile phone to which a coaxial cable harness according to an embodiment of the present invention is applied. It is a partially broken right view of FIG. It is a right view of the 1st housing | casing of FIG. It is a rear view of the 1st housing | casing of FIG. It is a partially broken top view explaining operation | movement of the coaxial cable harness of FIG. It is a partially broken right view of FIG. It is a side view which shows the wiring structure using the conventional flexible printed circuit board.

Explanation of symbols

1 Mobile phone (equipment)
2 1st housing | casing 3 2nd housing | casing 10 Coaxial cable harness 11 Coaxial cable 12 End part side termination processing part (one end part)
13 Other end side termination processing part (other end part)
14 Middle part

Claims (2)

A coaxial cable harness in which one end portion and the other end portion of a plurality of coaxial cables are terminated and bent in a U shape,
An intermediate portion between the one end portion and the other end portion of the coaxial cable is non-bundled and is arranged in a non-uniform length and in a planar shape so that the outer cable is longer than the inner cable. Coaxial cable harness. The coaxial cable harness according to claim 1,
The one end is connected to the first casing, and the other end is connected to a second casing that is slidably connected to the first casing. Coaxial cable harness connection structure.

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