WO2013145028A1

WO2013145028A1 - Cable wiring structure for electronic device

Info

Publication number: WO2013145028A1
Application number: PCT/JP2012/002239
Authority: WO
Inventors: 岡本　聡; 正寛金丸; 登山口
Original assignee: 三菱電機株式会社
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2013-10-03
Also published as: JP5980312B2; JPWO2013145028A1

Abstract

The purpose of the present invention is to provide a cable wiring structure for an electronic device which has a cover (2) that rotates to open and close with respect to a main body (1). The cable wiring structure comprises: a sheet-like wiring cable (10) which is formed by arranging a plurality of thin coaxial cables parallel to each other and bonding the thin coaxial cables with an adhesive material in a sheet-like shape and which electrically connects the cover (2) and the main body (1); and an elastic sheet member (20) which is laminated on the sheet-like wiring cable (10) and operates integrally with the sheet-like wiring cable (10) in response to the opening and closing of the cover (2). Accordingly, flattening a coaxial cable capable of transmitting high-speed video signals and so forth produces space-saving wiring while securing sufficient flexural resistance.

Description

Cable wiring structure of electronic equipment

The present invention relates to a cable wiring structure of an electronic device provided with a lid such as a monitor that rotates to open and close the device main body.

Usually, an electronic device having a cover such as a monitor that rotates and opens and closes with respect to the device main body requires cable wiring for electrically connecting the rotating cover and the main body. Therefore, conventionally, a connection structure using an FFC / FPC (flexible flat cable) that is flat and does not take up space is common.

However, in recent years, there has been a problem that the amount of information to be processed has increased, and it has been difficult to transmit a high-speed video signal using only FFC / FPC. In order to deal with such a problem, for example, as disclosed in Patent Document 1, a cable wiring structure in which electric wires such as coaxial cables with high shielding properties are bundled, and the rotary hinge shaft is hollowed and passed therethrough, In general, a cable wiring structure in which the outer periphery of the rotating shaft portion is spirally arranged is generally used.

JP 2011-21650 A

However, for example, in the conventional cable wiring structure shown in Patent Document 1, in order to pass a bundle of coaxial cables with a hollow rotating hinge shaft, it is necessary to pass the cable wiring and the connector at the wiring end associated therewith. In addition, the shaft diameter of the rotating hinge shaft must be increased, and the entire electronic device must be enlarged by the amount of the coaxial cable bundle that protrudes from the rotating hinge shaft. There was a problem of coming out.
Further, for example, when a cable wiring structure in which the outer periphery of the rotating shaft portion is spirally formed is employed, there is a problem that the cable may be disconnected by repeatedly opening and closing the lid.

The present invention has been made to solve the above-described problems, and can transmit a high-speed video signal or the like without being restricted in space and design, and can be bent sufficiently. It aims at providing the cable wiring structure which can ensure durability.

In order to achieve the above object, the present invention electrically connects between the lid and the main body in a cable wiring structure of an electronic device provided with a lid that rotates to open and close the main body. A sheet form wiring in which a plurality of thin coaxial cables are arranged in parallel and bonded together in a sheet shape with an adhesive member, and the sheet form wiring is provided so as to be overlapped with the sheet form wiring, and according to opening and closing of the lid And an elastic sheet member that operates integrally.

According to the cable wiring structure of the present invention, the coaxial cable capable of transmitting a high-speed video signal or the like can be flattened to enable wiring that does not take up space, and sufficient bending durability can be ensured.

It is an external appearance perspective view which shows the whole structure of the electronic device in Embodiment 1 of this invention. It is a schematic diagram explaining the conventional cable wiring structure. It is a schematic diagram explaining wiring a some thin coaxial cable in parallel and making it into a sheet form. It is a schematic diagram at the time of connecting and wiring a cable in a state where a sheet form wiring and an elastic sheet are overlapped. FIG. 4 is a detailed cross-sectional view when the cable shown in FIG. It is detailed sectional drawing at the time of connecting and wiring the cable in the case of only sheet form wiring (when there is no sheet | seat which has elasticity). It is detailed sectional drawing at the time of connecting and wiring the cable in Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
1 is an external perspective view showing an overall configuration of an electronic apparatus including a lid such as a monitor that rotates and opens and closes with respect to a main body in Embodiment 1 of the present invention. FIG. 1A shows a state in which a monitor (lid body) 2 is closed with respect to the electronic device main body 1, and FIG. 1B shows a state in which the monitor (lid body) 2 is attached to the electronic device main body 1. It shows the open state. Moreover, the broken line in FIG. 1 shows the wiring image (refer FIG. 4, FIG. 5) of the internal wiring cable which electrically connects between the monitor (lid body) 2 and the electronic device main-body part 1. As shown in FIG. At this time, in order to transmit a high-speed video signal, wiring by a coaxial cable is performed.

FIG. 2 is a schematic diagram for explaining a conventional cable wiring structure shown in Patent Document 1, for example. 2A shows a state in which the monitor 2 is closed, and FIG. 2B shows a state in which the monitor 2 is opened. In this case, in order to pass the cable 4 in which the rotary hinge shaft 3 is hollow and the coaxial cables are bundled, the shaft diameter of the rotary hinge shaft 3 must be enlarged, and the monitor 2 passes through the rotary hinge shaft 3. In order to connect the cable 4 to the electronic device main body 1, the overhanging portion 5 must be provided on the side surface of the electronic device main body 1, and the electronic device as a whole is enlarged accordingly. FIG. 2C is a side view of FIG. 2A viewed from the direction of the arrow A, and shows that the cable 4 in which the coaxial cables are bundled is twisted and connected to the electronic device main body 1. Yes.

FIG. 3 is a schematic diagram for explaining that a plurality of thin coaxial cables are arranged in parallel to form a sheet (flattened). 3A shows a state in which a plurality of thin coaxial cables 11 are arranged in parallel as an example, and FIG. 3B shows a member (tape / film) 12 having adhesiveness on one side surface. Is attached to both surfaces in the state shown in FIG. 3A, and the thin coaxial cables 11 arranged in parallel are flattened, that is, in a sheet form. In this way, a plurality of thin coaxial cables 11 that are electrically connected between the monitor 2 and the electronic device main body 1 are arranged in parallel and bonded together in a sheet shape with an adhesive member (tape / film) 12. This is hereinafter referred to as “sheet-form wiring 10”.
FIG. 3C is a view showing a state in which the sheet member 20 having another elasticity is superposed on the sheet form wiring 10 shown in FIG.

FIG. 4 shows a cable in a state in which a sheet form wiring 10 in which a plurality of thin coaxial cables 11 are arranged in parallel as shown in FIG. 3C and formed into a sheet form and a sheet member 20 having elasticity are overlapped. It is a schematic diagram at the time of connecting and wiring from the monitor (cover) 2 to the electronic device main body 1. Here, the sheet member 20 having elasticity is provided so as to overlap the sheet-form wiring 10 in which a plurality of thin coaxial cables 11 are arranged in parallel and bonded together in a sheet shape with an adhesive member (tape / film) 12. Thus, it operates integrally with the sheet form wiring 10 in accordance with opening and closing of the monitor (lid body) 2.

4A shows a state in which the monitor 2 is closed, and FIG. 4B shows a state in which the monitor 2 is opened. In the first embodiment, as shown in FIG. 4, the sheet-shaped wiring 10 is overlapped on the inner side with the monitor 2 closed with respect to the electronic device main body 1, and the elastic sheet member 20 is overlapped on the outer side. To do. In addition, the intersection of the dashed-dotted line which cross | intersects the cross in the figure has shown the rotation center of the monitor 2. FIG.

FIG. 5 is a detailed cross-sectional view when the cable shown in FIG. 3C is connected and wired. 5A is a cross-sectional view of the entire electronic device, FIG. 5B is a cross-sectional view of the wiring portion with the monitor 2 closed, and FIG. 5C is a state in which the monitor 2 is opened 90 degrees. FIG. 5D is a cross-sectional view of the wiring portion with the monitor 2 opened 120 degrees.

Here, in order to explain the effects of wiring the sheet form wiring 10 superimposed on the sheet member 20 having elasticity and arranging the sheet form wiring 10 inside the sheet member 20 having elasticity. FIG. 6 shows a detailed cross-sectional view when the cable is connected and wired when the sheet member 20 having elasticity is not provided, that is, when only the sheet form wiring 10 is used. 6A is a cross-sectional view of the entire electronic device, FIG. 6B is a cross-sectional view of the wiring portion with the monitor 2 closed, and FIG. 6C is a cross-sectional view of the wiring portion with the monitor 2 opened 90 degrees. FIG. 6D is a cross-sectional view of the wiring portion with the monitor 2 opened 120 degrees.

As shown in FIG. 6, in the case where there is no sheet member 20 having elasticity and only the sheet-like wiring 10 is used, the cable 2 has a stable curve regardless of whether the monitor 2 is closed or opened. Since it is difficult to form, there is a possibility that a crease will be formed or it will be twisted, and there is a high possibility that the cable will be broken by repeatedly opening and closing the monitor 2.

Therefore, in the first embodiment, a sheet member 20 having elasticity is superimposed on the sheet form wiring 10 and used.
As a result, as shown in FIGS. 5 (b) to 5 (d), even when the monitor 2 is gradually opened, the sheet member 20 having elasticity guides the sheet-shaped wiring 10 by the guide (by biasing). Correction), and the behavior of the movable wiring surplus necessary for the opening / closing operation can be stabilized. Therefore, even if the opening / closing operation of the monitor 2 is repeated, it is possible to suppress the occurrence of cable disconnection and ensure sufficient bending durability.

Note that the cable guide 6 shown in FIG. 5 is provided so as to prevent rubbing or cutting even when the sheet-form wiring 10 hits, and so that a stable curve is easily formed in the cable. .

Here, in order to improve the bending durability of the wiring, it is necessary to soften the wiring and make it difficult to break due to repeated bending load of opening and closing of the monitor 2. Therefore, the sheet form wiring 10 is more advantageous for bending durability when the flexibility is higher. However, when the flexibility is increased, the behavior of the movable wiring extra length necessary for the opening / closing operation becomes unstable, and stable bending durability cannot be ensured.

Therefore, when the sheet form wiring 10 and the sheet member 20 having elasticity are overlapped and wired, the sheet form wiring 10 is elastic on the inside with the monitor 2 closed with respect to the electronic device main body 1. The sheet member 20 thus formed is overlapped on the outside and wired.

As a result, as shown in FIGS. 5B to 5D, when the monitor 2 is gradually opened from the closed state, the elastic sheet member 20 is pushed inwardly in a convex shape. Since the sheet form wiring 10 with increased flexibility placed inside the sheet member is bent, the sheet form wire 10 is bent while being pushed into the elastic sheet member 20 so that the behavior does not become unstable, and stable bending durability is improved. Is possible. Further, when the monitor 2 is closed from the opened state, the elastic sheet member 20 moves so as to eliminate the convex pushing inward in the inner direction, and the sheet form wiring 10 with increased flexibility is provided on the monitor 2. It is pulled back from the wiring outlet and returns to the original closed state.

As described above, the sheet form wiring 10 is a soft wiring having high flexibility and needs not to be broken or disconnected by a bending load. Therefore, the member 12 having adhesiveness for bonding a plurality of thin coaxial cables 11 arranged in parallel to form the sheet form wiring 10 as shown in FIG. 3B is a cloth base tape such as acetate cloth tape. In addition, it is desirable to use a substrate having excellent flexibility and heat resistance, such as a polyimide substrate tape such as Kapton tape, or a fluorine-based substrate tape such as nitoflon tape.

When a film base material such as a general PET material is used as the adhesive member 12, it is easy to bend repeatedly due to bending load, and conductor breakage is likely to occur starting from the bending of the member. By using a cloth base material such as acetate cloth tape as described above, it is difficult to cause bending due to repeated bending load from high flexibility, and the thickness can be secured compared to the case of a film base material. It is possible to protect the cable from local rubbing and ensure good bending durability.

As described above, according to the cable wiring structure of the first embodiment of the present invention, the coaxial cable capable of transmitting a high-speed video signal or the like is flattened to enable wiring that does not take up space, and has sufficient bending durability. Sex can be secured.

Embodiment 2. FIG.
FIG. 7 is a detailed cross-sectional view when the cable according to the second embodiment of the present invention is connected and wired. In addition, the same code | symbol is attached | subjected to the structure similar to what was demonstrated in Embodiment 1, and the overlapping description is abbreviate | omitted.
In the second embodiment, the same sheet-form wiring 10 as in the first embodiment is used by being overlapped with a conventional FFC / FPC (flexible flat cable) 21. That is, the FFC / FPC (flexible flat cable) 21 is used as the elastic sheet member 20 in the first embodiment.

Usually, in an electronic device having a lid such as a monitor that rotates and opens and closes with respect to the main body, an FFC / FPC is used to electrically connect the lid and the main body. Therefore, by substituting the function of the sheet member 20 having elasticity in the first embodiment with the FFC / FPC originally used in the electronic device, there is no need to separately prepare the sheet member 20 having elasticity, The same effects as those of the first embodiment can be obtained without additional parts and costs.

7A is a cross-sectional view of the entire electronic device, FIG. 7B is a cross-sectional view of the wiring portion in a state where the monitor (lid body) 2 is closed, and FIG. 7C is a monitor (lid). FIG. 7D is a cross-sectional view of the wiring portion with the monitor (lid body) 2 opened 120 degrees.

As shown in FIGS. 7B to 7D, when the monitor 2 is gradually opened, the flexible wiring cable 21 guides (corrects by biasing) the sheet form wiring 10 and is necessary for the opening / closing operation. Therefore, even if the opening / closing operation of the monitor 2 is repeated, the occurrence of cable disconnection can be suppressed and sufficient bending durability can be ensured.

Further, when the sheet form wiring 10 and the flexible flat cable 21 are overlapped and wired, as in the first embodiment, the sheet form wiring 10 is placed inside the electronic device main body 1 with the monitor 2 closed. The flexible flat cable 21 is overlapped on the outside and wired.

Accordingly, as shown in FIGS. 7B to 7D, when the monitor 2 is gradually opened from the closed state, the flexible flat cable 21 is bent while being pushed inwardly in a convex shape. The sheet-shaped wiring 10 with increased flexibility placed inside thereof is bent while being pushed into the flexible flat cable 21 so that its behavior does not become unstable, and stable bending durability can be improved. Further, when the monitor 2 is closed from the opened state, the movement of the convex push inward of the flexible flat cable 21 is eliminated, and the sheet-like wiring 10 with increased flexibility is connected to the wiring outlet portion of the monitor 2. It is pulled back from and returns to the original closed state.

As described above, according to the cable wiring structure of the second embodiment of the present invention, the coaxial cable capable of transmitting a high-speed video signal or the like is flattened to enable wiring in the wiring path of the conventional flexible flat cable, In addition, sufficient bending durability can be ensured.

In the present invention, within the scope of the invention, any combination of the embodiments, any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

The cable wiring structure of the present invention is suitable for an electronic device having a lid such as a monitor that rotates and opens and closes with respect to the main body.

1 electronic device main body, 2 monitor (lid), 3 rotating hinge shaft, 4 cable bundled coaxial cable, 5 overhanging portion of electronic device

main body

1, 6 cable guide, 10 sheet form wiring, 11 fine coaxial cable, 12 adhesive member (tape / film), 20 elastic sheet member, 21 FFC / FPC (flexible flat cable).

Claims

In the cable wiring structure of an electronic device having a lid that rotates and opens and closes with respect to the main body,
Sheet-form wiring in which a plurality of thin coaxial cables that are electrically connected between the lid and the main body are arranged in parallel and bonded together in a sheet shape with an adhesive member;
A cable wiring structure comprising: an elastic sheet member which is provided so as to overlap with the sheet form wiring and operates integrally with the sheet form wiring in accordance with opening and closing of the lid.
The cable wiring structure according to claim 1, wherein the sheet form wiring is overlapped on the inside with the lid closed with respect to the main body, and the elastic sheet member is overlapped on the outside.
2. The cable wiring structure according to claim 1, wherein the elastic sheet member is a flexible flat cable.
2. The cable wiring structure according to claim 1, wherein the adhesive member is a cloth base material.