JP2016076433A - Moving-part-wiring flat cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving part-wiring flat cable in which the drooping, due to the gravity, of both ends oppositely facing via the bend part when a woven fabric-like cable is undergoing repeated U-shaped bends even without the fixing to a cable-bear, can be suppressed, and moreover, the high flexibility and resilience unique to the woven fabric-like cable can be maintained as much as possible.SOLUTION: Provided is a moving part-wiring flat cable 100 including a woven fabric-like cable 101, and a cylinder-shaped cover member 102 having the woven fabric-like cable 101 housed therein, and in which the woven fabric-like cable 101 comprises a plurality number of electric wires 103 arranged in parallel, and a fiber yarn 104 woven to thread through the plurality number of electric wires 103, and the cylinder-shaped cover member 102 has a C-shaped cross section having a cut slit 115 to a part in the cross-sectional view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a movable part wiring flat cable that is wired to a movable part that repeatedly receives U-shaped bending, such as an industrial robot.

  In recent years, a woven cable in which fiber yarns are woven between a plurality of electric wires arranged in parallel as a flat cable for wiring a movable part that is wired to a movable part that repeatedly receives U-shaped bending, such as an industrial robot. The use of (referred to as FCBAND® cables) is being considered.

JP 2013-062065 A JP 2013-058448 A

  However, the woven cable has higher flexibility and flexibility than the collective coated cable in which a plurality of electric wires arranged in parallel are collectively coated with a coating layer, and repeatedly undergoes U-bending. At this time, both ends opposed to each other through the bent portion cannot be maintained in a parallel state due to gravity, and there is a problem that the both ends contact each other and the fiber yarn may be disconnected.

  In order to solve this problem, for example, by fixing a woven cable to a cable bear, it can be considered that both ends opposed to each other via a bent portion are prevented from drooping by gravity. Compared to the case where wiring is performed, a wider wiring space is required as long as the cable bearer is disposed, and another problem that the cost increases as the cable bearer is used occurs.

  Therefore, the object of the present invention can suppress that both ends opposed to each other through the bent portion are drooped by gravity when the fabric-like cable is repeatedly U-shaped bent without being fixed to the cable bear, It is an object of the present invention to provide a flat cable for movable part wiring that can maintain the high flexibility and flexibility peculiar to a woven cable as much as possible.

  In order to achieve this object, the present invention includes a woven cable and a cylindrical covering member in which the woven cable is housed, and the woven cable includes a plurality of woven cables arranged in parallel. A plurality of electric wires and a fiber thread woven so as to sew between the plural electric wires, and the cylindrical covering member has a C-shaped cross section with a cut in part in a cross sectional view. It is the flat cable for movable part wiring which has.

  The cut line may be disposed adjacent to one surface of the woven cable located outside the bent portion when the woven cable is repeatedly subjected to U-shaped bending.

  It is good to further provide an abrasion-resistant sheet interposed between one surface of the woven cable and the cylindrical covering member.

  The tubular covering member includes an inner tubular covering member having a C-shaped cross section in which the fabric-like cable is housed and a cut in a part in a cross-sectional view, and the fabric-like cable is housed inside. It is preferable that the inner cylindrical covering member is housed inside and an outer cylindrical covering member having a C-shaped cross section with a cut in a part when viewed in cross section.

  The cut of the inner cylindrical covering member may be disposed adjacent to one surface of the woven cable located outside the bent portion when the woven cable is repeatedly subjected to U-shaped bending.

  The cut of the outer cylindrical covering member may be disposed adjacent to the other surface of the woven cable located inside the bent portion when the woven cable is repeatedly subjected to U-shaped bending.

  A wear-resistant sheet interposed between one surface of the woven cable and the inner cylindrical covering member may be further provided.

  A plurality of the woven cables are preferably laminated.

  It is good to further provide an abrasion-resistant sheet interposed between the plurality of woven cables.

  The electric wires preferably have an outermost layer formed of a fluorine resin.

  The fiber yarn is preferably formed of a fluorine resin.

  The cylindrical covering member may be formed of fluorine resin or fluorine rubber.

  The wear-resistant sheet is preferably formed of a fluorine resin.

  According to the present invention, it is possible to prevent both ends facing each other through the bent portion from drooping due to gravity when the woven cable is repeatedly bent in a U shape without being fixed to the cable bear, The flat cable for movable part wiring which can maintain the high softness | flexibility and flexibility peculiar to a cable as much as possible can be provided.

It is a cross-sectional schematic diagram which shows the flat cable for movable part wiring which concerns on 1st Embodiment. It is a side surface schematic diagram which shows the flat cable for movable part wiring which concerns on 1st Embodiment. It is a cross-sectional schematic diagram which shows the mode at the time of accommodating a textile-like cable in the inside of a cylindrical coating | coated member. It is a cross-sectional schematic diagram which shows the flat cable for movable part wiring which concerns on 2nd Embodiment. It is a cross-sectional schematic diagram which shows the flat cable for movable part wiring which concerns on 3rd Embodiment. It is a cross-sectional schematic diagram which shows the flat cable for movable part wiring which concerns on 4th Embodiment.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[First Embodiment]
As shown in FIG. 1, the movable part wiring flat cable 100 according to the first embodiment includes a woven cable 101 and a tubular covering member 102 in which the woven cable 101 is housed. Yes.

  The woven cable 101 includes a plurality of electric wires 103 arranged in parallel and a fiber thread 104 woven so as to sew between the plurality of electric wires 103. The plurality of electric wires The stitches are woven so that 103 constitutes the warp and the fiber yarn 104 constitutes the weft.

  In all the cross-sectional schematic diagrams, for convenience, the fiber yarns 104 are depicted as being interrupted on both sides in the width direction of the woven cable 101, but in practice, one fiber yarn 104 is composed of a plurality of electric wires. 103 is stitched and woven.

  The electric wires 103 include a tubular cable 107 in addition to the coaxial cable 105 and the insulating cable 106, and these electric wires 103 are arranged alternately or in a predetermined order to form a plurality of electric wires 103.

  The coaxial cable 105 is for transmitting an electrical signal. The coaxial cable 105 is an inner conductor 108 made of a metal wire, an insulating layer 109 formed around the inner conductor 108, and a metal wire is wound horizontally around the insulating layer 109. The outer conductor 110 is formed by being wound in a shape or a braid, and the jacket 111 is formed around the outer conductor 110.

  The metal wires constituting the inner conductor 108 and the outer conductor 110 are made of a copper wire, an aluminum wire or the like having excellent conductivity. Further, the metal wire may be a single wire or a stranded wire, and the surface may be plated.

  The insulating layer 109 and the jacket 111 are made of tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), or polytetrafluoroethylene (PTFE). It is made of a fluorine resin that has high wear resistance and low dust generation.

  The insulated cable 106 is for supplying electric power, and has a conductor 112 made of a metal wire and an insulating layer 113 formed around the conductor 112.

  The metal wire constituting the conductor 112 is made of a copper wire, an aluminum wire or the like having excellent conductivity. Further, the metal wire may be a single wire or a stranded wire, and the surface may be plated.

  The insulating layer 113 is a fluororesin having high lubricity, wear resistance, and low dust generation properties, such as tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, or polytetrafluoroethylene. It is formed with.

  The tubular cable 107 is for supplying a fluid such as air or water through the hollow portion 114, and includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, a tetrafluoroethylene-hexafluoropropylene copolymer, or a polytetra It is made of a fluororesin such as fluoroethylene which has high lubricity and wear resistance and low dust generation.

  As described above, the electric wires 103 have the outermost layer formed of a fluorine resin that has high lubricity and wear resistance and low dust generation properties, and when the woven cable 101 is repeatedly bent in a U shape. Even if it comes into contact with other members, it is protected by the outermost layer, so that it is hardly damaged and dust is hardly generated.

  The fiber yarn 104 is a fluororesin having high lubricity, wear resistance and low dusting properties, such as tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, or polytetrafluoroethylene. It is formed with.

  Therefore, the fiber yarn 104 is difficult to break even if it comes into contact with other members when the woven cable 101 is repeatedly subjected to a U-shaped bend, and the multiple wires 103 are prevented from being unraveled due to the fiber yarn 104 being broken. It becomes possible to do.

  The cylindrical covering member 102 has a C-shaped cross section with a cut 115 in a part in a cross sectional view, and includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, a tetrafluoroethylene-hexafluoropropylene copolymer, Or, such as polytetrafluoroethylene, fluorine resin with high lubricity and wear resistance and low dust generation, vinylidene fluoride rubber (FKM), tetrafluoroethylene-propylene rubber (FEPM), or tetrafluoroethylene-par It is made of a fluoro rubber such as fluoroalkyl vinyl ether rubber (FFKM) that has high lubricity and wear resistance and low dust generation.

  Therefore, the cylindrical covering member 102 is not easily damaged even when it comes into contact with other members when the fabric-like cable 101 is repeatedly bent in a U shape, and dust is hardly generated.

  Further, since the fluororesin and the fluororubber have an appropriate hardness, the woven cable 101 is accommodated in the cylindrical covering member 102 formed of the fluororesin or the fluororubber, so that the woven fabric is attached to the cable bear. Even if the woven cable 101 is repeatedly subjected to a U-shaped bend without fixing the cable 101, it is possible to prevent the opposite end portions that are opposed to each other through the bent portion from drooping by gravity.

  Furthermore, since the cylindrical covering member 102 is about the same thickness as the covering layer of the batch coated cable and its size is smaller than that of the cable bear, by adopting the cylindrical covering member 102, the cable bear The wiring space can be reduced as compared with the case where it is adopted.

  In addition, since the cylindrical covering member 102 is sufficiently inexpensive compared to the cable bear, the use of the cylindrical covering member 102 can reduce the cost compared to the case where the cable bear is adopted. It becomes.

  As shown in FIG. 2, the cut 115 is disposed adjacent to one surface of the fabric-like cable 101 positioned outside the bent portion when the fabric-like cable 101 repeatedly receives a U-bend.

  As a result, when the woven cable 101 is repeatedly subjected to U-shaped bending, the interval between the cut lines 115 is expanded and the cylindrical covering member 102 is deformed, so that the stress applied to the bent portion can be released to the outside by the deformation. It is possible to suppress disconnection of the plurality of electric wires 103 constituting the woven cable 101.

  Moreover, when the woven cable 101 is repeatedly subjected to U-bending, the gaps 115 are widened, and the internal space of the cylindrical covering member 102 in which the woven cable 101 is accommodated is expanded. Even when housed in the tubular covering member 102, the movement of the woven cable 101 is not hindered, and it is possible to maintain the high flexibility and flexibility unique to the woven cable 101 as much as possible. Become.

  In addition, it is desirable to bind the both ends of the movable part wiring flat cable 100 with the binding tool 116 so that the fabric-like cable 101 does not jump out of the cut 115 when the fabric-like cable 101 repeatedly receives a U-bend.

  Further, as shown in FIG. 3, the woven cable 101 is inserted in the tubular covering member 102 in the illustrated black arrow direction while the tubular covering member 102 is bent in the illustrated white arrow direction to widen the gap 115. Since the woven cable 101 can be accommodated in the tubular covering member 102 by simply sandwiching the woven cable 101 with the tubular covering member 102 over the entire length, even if the woven cable 101 is long. The woven cable 101 can be accommodated inside the cylindrical covering member 102 in a short time by a simple operation.

  Furthermore, even when it is necessary to replace the cylindrical covering member 102 due to deterioration over time or the like, similarly, a complicated operation is unnecessary, and therefore the replacement of the cylindrical covering member 102 can be performed in a short time by a simple operation. Can be done.

  By the way, the woven cable 101 is repeatedly bent in a U shape by housing the woven cable 101 in a resin tube having a hardness similar to that of the cylindrical covering member 102 and having a cross section continuous in a cross sectional view. At this time, it is possible to prevent the both end portions facing each other through the bent portion from drooping due to gravity.

  However, as described above, since the resin tube has a continuous cross section in a cross-sectional view, the resin tube is not easily deformed even if the fabric-like cable 101 is repeatedly bent in a U shape, and the fabric-like cable 101 is strongly restrained. For this reason, the stress applied to the bent portion cannot be released to the outside, and there is a possibility that the plurality of electric wires 103 constituting the woven cable 101 may be disconnected. There is a possibility that the flexibility is significantly lowered.

  Furthermore, when the woven cable 101 is accommodated inside the resin tube, it is necessary to sequentially insert the woven cable 101 from one end of the resin tube to the other end. When the length is long, the work of housing the woven cable 101 inside the resin tube becomes complicated, so that the production yield is reduced as compared with the case where the tubular covering member 102 is adopted, and the resin tube is replaced. Cannot be done in a short time by simple work.

[Second Embodiment]
As shown in FIG. 4, the movable part wiring flat cable 200 according to the second embodiment is one surface of the woven cable 101 compared to the movable part wiring flat cable 100 according to the first embodiment. And the cylindrical covering member 102 is further provided with a wear-resistant sheet 117 interposed therebetween.

  The abrasion-resistant sheet 117 is made of tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polytetrafluoroethylene, or the like, which has high lubricity and wear resistance and low dust generation. It is made of fluorine resin.

  In the movable portion wiring flat cable 200 according to the second embodiment, when the fabric-like cable 101 is repeatedly subjected to U-shaped bending, the interval between the cuts 115 is widened, and the tubular covering member 102 is deformed. It is possible to prevent the edge of the fiber yarn 104 from repeatedly contacting with the fiber yarn 104, and to reliably prevent the fiber yarn 104 from being disconnected.

  Therefore, the movable part wiring flat cable 200 according to the second embodiment can exhibit high reliability even in a harsher environment such that the woven cable 101 is repeatedly bent at a high speed. .

[Third Embodiment]
As shown in FIG. 5, the movable portion wiring flat cable 300 according to the third embodiment has a cylindrical covering member 102 as compared with the movable portion wiring flat cable 100 according to the first embodiment. The inner tubular covering member 118 having a C-shaped cross section in which the woven cable 101 is housed and having a notch 115 in a cross-sectional view, and the inner tubular covering in which the woven cable 101 is housed. The member 118 is different from the outer cylindrical covering member 119 in which the member 118 is housed inside and has a C-shaped cross section with a cut 115 in a part in a cross sectional view.

  The cut 115 of the inner cylindrical covering member 118 is preferably disposed adjacent to one surface of the woven cable 101 positioned outside the bent portion when the woven cable 101 is repeatedly subjected to U-bending. The cut 115 of the covering member 119 is preferably disposed adjacent to the other surface of the woven cable 101 positioned inside the bent portion when the woven cable 101 is repeatedly subjected to U-shaped bending.

  In the movable part wiring flat cable 300 according to the third embodiment, since the woven cable 101 is not exposed at the cut 115, foreign matter enters the inside of the cylindrical covering member 102 from the cut 115, and the woven cable. It is possible to prevent the 101 from being damaged.

  Further, in the movable part wiring flat cable 300 according to the third embodiment, since the cut 115 is formed in both the inner cylindrical covering member 118 and the outer cylindrical covering member 119, the first embodiment. The effects obtained with the movable part wiring flat cable 100 are not impaired.

  In addition, in the movable part wiring flat cable 300 according to the third embodiment, similarly to the movable part wiring flat cable 200 according to the second embodiment, one surface of the woven cable 101 and the inner cylindrical covering member are provided. A wear-resistant sheet 117 interposed between the tubular covering member 102 and the movable portion wiring flat cable 300 according to the third embodiment may be provided. An inner cylindrical covering member 118 having a C-shaped cross section with a cut 115 in a part when viewed in a transverse cross section and an inner cylindrical covering member 118 in which the woven cable 101 is accommodated are provided. The outer cylindrical covering member 119 having a C-shaped cross section that is housed inside and has a cut 115 in a part in a cross sectional view may be included.

[Fourth Embodiment]
As shown in FIG. 6, the movable part wiring flat cable 400 according to the fourth embodiment is compared with the movable part wiring flat cable 100 according to the first embodiment. The point of difference is that a plurality of sheets are laminated and a point that a wear-resistant sheet 117 interposed between the plurality of woven cables 101 is further provided.

  In the movable part wiring flat cable 400 according to the fourth embodiment, while increasing the mounting density of the electric wires 103, the plurality of woven cables 101 are prevented from contacting each other, and the fiber yarn 104 is disconnected. It becomes possible to prevent.

  In addition, in the movable part wiring flat cable 400 according to the fourth embodiment, one surface of the woven cable 101 and the tubular covering member 102 are provided, similarly to the movable part wiring flat cable 200 according to the second embodiment. Further, a wear-resistant sheet 117 interposed between the cylindrical covering member 102 and the woven cable may be provided as in the movable portion wiring flat cable 300 according to the third embodiment. An inner cylindrical covering member 118 having a C-shaped cross section with a cut 115 in a part in a cross sectional view and an inner cylindrical covering member 118 in which the woven cable 101 is accommodated are contained. And an outer cylindrical covering member 119 having a C-shaped cross section with a cut 115 in a part in a cross sectional view.

  As described above, according to the present invention, when the fabric-like cable repeatedly receives a U-shaped bend without being fixed to the cable bear, it is possible to suppress both ends facing each other through the bent portion from dropping due to gravity, And the flat cable for movable part wiring which can maintain the high softness | flexibility and flexibility peculiar to a fabric-like cable as much as possible can be provided.

100, 200, 300, 400 Flat cable 101 for moving part wiring Woven cable 102 Tubular covering member 103 Electric wires 104 Fiber yarn 105 Coaxial cable 106 Insulated cable 107 Tubular cable 108 Inner conductor 109 Insulating layer 110 Outer conductor 111 Jacket 112 Conductor 113 Insulating layer 114 Hollow portion 115 Cut 116 Bundling tool 117 Abrasion-resistant sheet 118 Inner cylindrical covering member 119 Outer cylindrical covering member

Claims (13)

A woven cable;
A tubular covering member in which the woven cable is housed; and
With
The woven cable has a plurality of electric wires arranged in parallel, and a fiber thread woven so as to sew between the plurality of electric wires,
The cylindrical covering member has a C-shaped cross section with a cut in a part in a cross sectional view.   The said cut | interruption is a flat cable for movable part wiring of Claim 1 arrange | positioned adjacent to one surface of the said fabric-like cable located in the outer side of a bending part, when the said fabric-like cable receives a U-shaped bending repeatedly.   The flat cable for movable part wiring according to claim 2, further comprising an abrasion-resistant sheet interposed between one surface of the fabric-like cable and the cylindrical covering member.   The tubular covering member includes an inner tubular covering member having a C-shaped cross section in which the fabric-like cable is housed and a cut in a part in a cross-sectional view, and the fabric-like cable is housed inside. The flat cable for movable part wiring according to claim 1, comprising: the inner cylindrical covering member housed therein and an outer cylindrical covering member having a C-shaped cross section with a cut in a part when viewed in cross section.   The said cut | interruption of the said inner side cylindrical coating | coated member is arrange | positioned adjacent to one surface of the said fabric-like cable located in the outer side of a bending part, when the said fabric-like cable receives a U-shaped bending repeatedly. Flat cable for wiring moving parts.   The said cut | interruption of the said outer side cylindrical coating | coated member is arrange | positioned adjacent to the other surface of the said fabric-like cable located inside a bending part, when the said fabric-like cable receives a U-shaped bending repeatedly. Flat cable for wiring of moving parts.   The flat cable for movable part wiring according to claim 5 or 6, further comprising an abrasion-resistant sheet interposed between one surface of the woven cable and the inner cylindrical covering member.   The movable part wiring flat cable according to any one of claims 1 to 7, wherein a plurality of the fabric-like cables are laminated.   The movable part wiring flat cable according to claim 8, further comprising an abrasion-resistant sheet interposed between the plurality of the woven cables.   The flat cable for movable part wiring according to any one of claims 1 to 9, wherein the electric wires have an outermost layer formed of a fluorine resin.   The flat cable for movable part wiring according to any one of claims 1 to 10, wherein the fiber yarn is formed of a fluorine resin.   The flat cable for movable part wiring according to any one of claims 1 to 11, wherein the cylindrical covering member is formed of a fluorine resin or a fluorine rubber.   The movable part wiring flat cable according to claim 3, wherein the wear-resistant sheet is formed of a fluorine resin.

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