JP2010165462A - Bending of flexible flat cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To bend a flexible flat high-frequency cable P for high-speed transmission without producing wrinkles and splits on its shield layer. <P>SOLUTION: A cable P is put through between round shafts 30, 40 arranged in parallel, one of the shafts 30 is made to roll on the cable which makes the other shaft 40 revolve around the same in one unit. This revolution makes the cable bend, using one of the round shaft' outer perimeter face as a guide. At this time, rolling of one shaft 30 does not exhibit any sliding resistivity between the shaft 30 and the cable, and as an axis center of the other shaft 40, being in one unit with the shaft 30, is always located in the same direction of diameter as viewed from the shaft 30, a contact point of the other shaft 40 and the cable does not move and no sliding occurs between them (no sliding resistivity is generated). For this reason, the wrinkling and splitting of the shield layer caused by the sliding resistivity by sliding does not occur, as the sliding between both of the bending member round shafts 30, 40 and the cable P hardly occurs during the bending action. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flexible flat cable such as a high-speed transmission flexible flat high-frequency cable used for transmission / reception of signals and the like between various electronic components and circuit boards in various electronic devices such as liquid crystal televisions, plasma televisions, and copying machines. And a bending jig and a bending apparatus.

For example, recent thin high-precision large-screen televisions require high-speed transmission of signals and the like, and the cable itself that is a signal transmission member is required to withstand the high-speed transmission.
As a high-speed transmission cable, there is a flexible flat high-frequency cable (hereinafter referred to as “flat cable” or “cable” as appropriate), and this cable shields the entire area around the dielectric layer that wraps the parallel conductors. Some are surrounded by layers (see FIG. 2 of Patent Document 1).
For example, as shown in FIG. 13, polyethylene terephthalate in which conductors 1 arranged in parallel are wrapped with a dielectric layer 2 such as low-loss polyolefin, and a copper foil 3 a of about 9 μm is stretched over the upper and lower surfaces of the dielectric layer 2 ( (PET) (thickness: about 12 μm) A shield layer 3 made of 3b is provided, and further around it, a bag-shaped PET tape (thickness: about 6 μm) 4b covered with a copper foil 4a of about 9 μm for ground function There is one in which the outer skin 4 is wound and coated with the copper foil 4a inside. The dielectric layer 2 and the shield layer 3 are bonded via the PET 3b on the inside thereof, and the shield layer 3 and the outer skin 4 are not bonded, and both the copper foils 3a and 4a are movable while being in contact with each other. As the conductor 1, a flat type, a circular type or the like is adopted.

  On the other hand, this type of flat cable is led from one direction and bent when wiring between various electronic components, circuit boards, etc., in order to save space. In many cases, the surface is inclined (having a bending angle θ) and guided in another direction (see FIG. 11 of Patent Document 2).

  Here, the flat cable P ′ having a thickness of about 0.16 to 0.3 mm is usually shown in FIG. 14 because the conductor included in the insulator is as thin as 0.035 to 0.1 mm in diameter or thickness. Thus, even if it is bent along the long metal plate B to the required bending angle θ, there is little influence on the shield layer 3, the dielectric layer 2, and the conductor 1, and this processing method is widely adopted.

  Further, a flexible flat cable P ′ is inserted between a fixed round bar and a bending member that revolves around the round bar, and the flexible flat cable P ′ on one side of the round bar is fixed. Thus, there is also a technique of revolving the bending member and bending the flexible flat cable P ′ on the other side in a direction Y inclined with respect to the length direction X of the flexible flat cable P ′ on one side (see Patent Document 3 FIG. 7). ).

JP 2008-47505 A JP 2007-104828 A JP 2003-68157 A

By the way, the flexible flat high-frequency cable P for high-speed transmission shown in FIG. 13 has a conductor diameter: 0.16 mm, a dielectric layer thickness: 0.475 mm, a cable thickness: 0.68 mm, and the like. When the flat cable P is bent, if the bending is performed randomly or if the bent portion is pressed strongly in order to reduce the bulk, the conductor 1 may be damaged. For this reason, caution is required when routing the flat cable P.
Further, because of the demand for miniaturization, the interval between the conductors 1 is also narrow, and since the shield layer 3 and the outer skin 4 are located on the entire surface of the dielectric layer 2, depending on the degree of the bending, “Flaws” are likely to occur on the inside and “tears” on the outside. At this time, in the flexible flat high-frequency cable P for high-speed transmission, the shield layer 3 and the outer cover 4, in particular, the crease and tear of the shield layer 3 lead to transmission loss (deterioration of transmission characteristics). Become.

  When the flexible flat high-frequency cable P for high-speed transmission is bent by the technique described in Patent Document 3, it is guided and bent by the circular arc surface of the round bar. Therefore, the member that bends the cable P is effective. (In Patent Document 3, the bent plate 3b) slides on the surface of the cable, and the sliding resistance may cause some inconvenience in the cable P, such as wrinkling or tearing of the shield layer 3 or the outer skin 4. .

  This invention makes it a subject to make it possible to bend a flexible flat cable, especially the flexible flat high frequency cable P for high-speed transmission, without producing the wrinkle and tear of the said shield layer in view of the above point.

In order to achieve the above object, the present invention inserts a flexible flat cable between a pair of parallel members, and revolves one of the two members around the other, and the revolving makes the flat When the cable is bent with one member as a guide, the slip between the two members and the flat cable is minimized as much as possible.
If there is no slippage between the two members and the flat cable, there will be no sliding resistance due to the slippage.

  As one configuration of the cable bending method of the present invention, a flexible flat cable is inserted between a parallel pair of main shafts and dependent shafts, and one side of the parallel flat shaft is fixed. In the state, in the method of bending the other side of the flexible flat cable in a direction inclined with respect to the length direction of the one side of the flexible flat cable, the main shaft is a round bar, the main shaft is the axis of the one side Roll on the flexible flat cable on one side while tilting with respect to the length direction of the flexible flat cable, and make sure that the axis of the slave is always on the same radial direction when viewed from the main axis. And the flexible flat cable on the other side is To adopt a configuration bent in a direction inclined with respect to the direction.

  In this configuration, since the main shaft rolls on the flat cable, there is no sliding resistance between the main shaft and the cable. Further, as the main shaft rolls, the subordinate shaft lifts the flat cable, winds it around the main shaft, and bends it. At this time, since the dependent shaft revolves around the main shaft so that its axis is always located on the same radial direction when viewed from the main shaft, the contact of the dependent shaft and the cable does not move, and slippage occurs between the two. No (no sliding resistance).

  As another configuration of the cable bending method of the present invention, similarly, a flexible flat cable is inserted between a parallel pair of main shafts and subordinate shafts, and one side of the parallel flat plate is bounded by the parallel shafts. In a method in which the cable is fixed and the flexible flat cable on the other side is bent in a direction inclined with respect to the length direction of the flexible flat cable on the one side, the main axis and the dependent axis are each a round bar, and the main axis is At a fixed position where the shaft center is inclined with respect to the length direction of the flexible flat cable on one side, the dependent axis rotates and revolves around the main axis, and the flexible flat cable on the other side is rotated by revolving the dependent axis. A configuration of bending in a direction inclined with respect to the length direction is employed.

  In this configuration, since the flat cable is bent so as to be wound around the stationary main shaft, there is no sliding resistance between the main shaft and the cable. At this time, the dependent shaft rotates along with the revolution, and the rotation prevents the sliding with the cable.

Here, “the length direction of the flexible flat cable on one side” in each cable bending method is the direction X in which the cable P is fed into the bending jig 20 in FIG. The “direction in which the flat cable is inclined with respect to the length direction X of the flexible flat cable on one side” is the bent direction Y. Therefore, the “bending angle θ” is an angle formed by the length direction Y of the other side of the flexible flat cable after bending and the length direction X of the one side of the flexible flat cable in FIG.
Further, as in the present invention, when a linear flexible flat cable is bent with a member inclined with respect to its length direction X as a guide, it is inclined from the X direction (in FIG. 7, downward as shown in the figure). The slope of [alpha] is [1/2] of (180- [theta]).
Therefore, when the flexible flat cable on the other side is wound around the outer peripheral surface of the main shaft and bent as in the present invention, the inclination angle α of the main shaft axis is determined by taking the above into consideration, the bending angle θ Is appropriately determined. For example, if θ = 90 degrees, α = (180−90) / 2 = 45 degrees, θ = 120 degrees, α = (180−120) / 2 = 30 degrees, and θ = 135 degrees. For example, α = (180−135) /2=22.5 degrees.
Therefore, the inclination angle of the main shaft when the main shaft is in a state where the main shaft is inclined with respect to the length direction of the flexible flat cable on one side in each of the above configurations is α corresponding to the bending angle θ, and the α degree The main shaft is inclined to roll.
Similarly, the inclination angle of the main shaft at “the fixed position where the main shaft is inclined with respect to the length direction of the flexible flat cable on one side” is α corresponding to the bending angle θ. This is a stationary position with the main axis inclined.

As one configuration of the jig constituting the former of the cable bending method of the present invention, it consists of a parallel pair of main shafts and a subordinate shaft, the main shaft is a round bar and is rotatable, and the subordinate shaft is A configuration that can revolve integrally around the main shaft can be adopted.
In this configuration, since the dependent shaft is integral with the main shaft, even if the main shaft rolls, the axis of the dependent shaft is always located on the same radial direction when viewed from the main shaft.
In this configuration, the dependent shaft may not be a rod shape, but may be a plate shape like the bent plate 3b described in Patent Document 3. That is, the dependent shaft includes such a plate shape. The dependent axis can be fixed or rotatable with respect to the main axis. The main shaft can be rolled manually, but can be performed by providing a pinion on the same shaft on the same shaft and moving the pinion while meshing with the rack.

  Also, as one configuration of the jig constituting the latter of the cable bending method of the present invention, it consists of a parallel pair of main shafts and dependent shafts, each of the main shaft and the dependent shafts as round bars, and the dependent shaft around the main shaft. A structure provided with means for rotating and revolving can be adopted.

In this configuration, various means can be adopted for revolving and rotating the slave shaft around the main axis. For example, the subordinate shaft is constituted by a planetary gear mechanism, and the axis of the main shaft on the axis of the sun gear of the planetary gear mechanism. Position the center, connect the subordinate shaft to the planetary gear, and with the sun gear fixed, rotate the external gear to rotate and rotate the subordinate shaft around the main axis, or the rotating plate provided on the base The main shaft may be rotatably passed through the central axis and fixed to the base, and a dependent shaft may be rotatably provided around the main shaft of the rotating plate.
The external gear and the rotating plate can be rotated by a motor or by rotating a pinion integrated with an external gear meshing with the rack by movement of the rack by a pinion rack mechanism.

  In any of the above-described bending jigs, at least one of the main shaft and the subordinate shaft can be bent with respect to the other portion so that the portion inserted through the flexible flat cable can be bent. If the portion where the main shaft and the dependent shaft are inserted is opened, the operation of inserting the flexible flat cable between the two shafts becomes easy.

  Moreover, the cable which can make the axial direction of the said main shaft differ with respect to the feeding length direction of the said flexible flat cable by attaching these cable bending jigs to the turntable provided in the worktable, and turning the turntable. With the bending apparatus, it is possible to perform cable bending work with different bending angles θ without changing the work position by turning the turntable.

  The above bending method, bending jig, and bending device can be used in the above-mentioned conventional flexible flat cable to prevent the shield layer of the cable from wrinkling and tearing. The prevention of wrinkling and tearing of the shield layer due to the bending is very effective because the transmission characteristics are not deteriorated.

  In any revolution and rotation means of the dependent axis, the dependent axis can be rotated freely with respect to the main axis. If it is rotatable, the dependent shaft rotates regardless of the rotation of the main shaft or its own revolution, so that the sliding resistance to the cable can be reduced (eliminated) by itself, and the rotation structure of the dependent shaft becomes simple. .

  In the present invention, the flat cable is bent along the peripheral surface of the main shaft. Therefore, the larger the peripheral surface diameter (cable bending curvature) R (see FIG. 6A) of the main shaft, The risk of tearing is reduced, but the thickness of the bent portion is increased and the mounting space is increased. On the other hand, if the curvature R is reduced, the mounting space can be reduced, but the risk of wrinkling and tearing increases. For this reason, the curvature R is appropriately determined based on experiments, mounting, and the like in consideration of the configuration and characteristics of the cable and the bending angle θ from one direction to the other. For example, the peripheral surface curvature R of the main shaft is 2.5 mm. The bending angle θ is appropriately determined according to the arrangement of electronic components to be connected.

In addition, the above-mentioned “round bar” has not only a circular cross section, but also the surface in contact with the flat cable when rotating and rolling, and the surface in contact with the cable along with the bending of the flexible flat cable have the same arc shape. As long as there is no hindrance to rotation / rolling, the other surfaces include those that are not in the same circular arc shape or in a cross-sectional angle shape.
Furthermore, the distance between the main shaft and the dependent shaft may be determined as appropriate according to the thickness of the flat cable to be bent. At this time, the interval of the dependent shaft can be adjusted with respect to the main shaft and can be fixed to the adjustment position by screwing or the like, but the dependent shaft can be moved (contacted / separated) with respect to the main shaft. At the same time, if the spring is always urged in the direction of the main axis, the cable can be sandwiched between the main axis and the subordinate axis without any gap by the spring even if the thickness of the cable changes.

  Since the present invention eliminates the sliding resistance between the cable and the bending member as described above, it is possible to bend a flexible flat cable, particularly a flexible flat high-frequency cable for high-speed transmission without causing deterioration of its transmission characteristics. , Can ensure stable high-speed transmission.

Schematic plan view of a bending apparatus according to an embodiment of the present invention The perspective view of the bending jig of the embodiment The bending jig | tool is shown, (a) is a principal part perspective view which reversed the up-down direction, (b) is the exploded perspective view. It is the undulation action figure of the main axis of the same bending jig, (a) when lying down, (b) when standing It is a schematic top view which shows the bending effect | action of the bending jig, (a) at the time of start, (b) at the middle, (c) at the time of completion It is a partial front view which shows the bending effect | action of the bending jig | tool, (a) is the time of a start, (b)-(e) is in the middle, (f) is the time of completion | finish. Action diagram for different bending angles θ of the same bending jig: 100 degrees Action diagram for different bending angle θ of the same bending jig: 135 degrees Right schematic side view of another embodiment of the bending jig It is a partial front view which shows the bending effect | action of the bending jig | tool, (a) is the time of a start, (b)-(e) is in the middle, (f) is the time of completion | finish. The other embodiment of a bending jig is shown, (a) is a principal part cutting front view, (b) is a right schematic side view. The other embodiment of a bending jig is shown, (a) is a principal part cutting front view, (b) is a right schematic side view. Cutaway example of flexible flat high-frequency cable for high-speed transmission Conventional cable bending operation explanatory diagram

  1 to 8 show an embodiment of the present invention. As shown in FIG. 1, a bending apparatus 10 according to this embodiment is provided with a rotating table 11 on a work table D so as to be rotatable about its center. The bending jig 20 is attached to the rotating disk 11.

An angle scale 12 is imprinted around the turntable 11, and the turntable 11 is turned so that the required scale 12 is aligned with the mark 13 on the work table D, whereby the axial direction of the bending jig 20 (the main spindle described later) is obtained. The angle α with respect to the feeding length direction X of the flexible flat high-frequency cable P for high-speed transmission (30 axial direction) is set to the bending angle θ of the cable P at the angle α.
That is, if the scale 12 of the required bending angle θ is aligned with the mark 13, for example, if the mark 13 is aligned with “90” of the scale 12, the angle α is 45 degrees, and the bending angle θ of the cable P is 90 degrees. If the angle is set to “135”, the angle α becomes 22.5 degrees, and the work of bending angle θ of the cable P: 135 degrees can be performed.
In a state where the scale 12 is adjusted to a required angle, the turntable 11 is fixed so as not to rotate by an appropriate means.

  The bending jig 20 includes a telescopic device 21 fixed to the turntable 11, a U-shaped moving member 22 fixed to a rod of the expanding and contracting device 21, a rotating shaft 23 provided rotatably on the moving member 22, and its A pinion 24 provided on the rotating shaft 23, a rack 25 fixed to the rotating disk 11 with which the pinion 24 meshes, a rotor 26 coaxially fixed to a projecting end of the rotating shaft 23 from the moving element 22, and the rotor The main shaft 30 and the subordinate shaft 40 of parallel round bars provided on 26 are formed. The curvature R of the outer peripheral surfaces of both the shafts 30 and 40 is 2.5 mm, but is determined as appropriate by experiments or the like so that the cable P can be bent smoothly and without hindrance.

  The telescopic device 21 has a rod (plunger) that can be moved back and forth by a certain length by an air cylinder, a hydraulic cylinder, an electromagnetic solenoid, an electric rotary machine, or the like. Rotates on the rack 25, and the rotor 26 and both shafts 30 and 40 also rotate with the rotation. The advance / retreat length of the rod is appropriately determined according to the revolution angle of the dependent shaft 40 (β in FIG. 6F), that is, the bending degree of the cable P, which will be described later.

  The main shaft 30 is provided at the axis of the rotor 26 and is coaxial with the rotary shaft 23 (pinion 24), and moves in the direction of the arrow as the pinion 24 (mover 22) moves in the direction of the arrow. Rotate with. Moreover, the main axis | shaft 30 is divided into the two members 31 and 32 on the way, as shown in FIGS.

As shown in FIG. 4, the two members 31, 32 forming the main shaft 30 are formed with a bifurcated portion 33 at the end of one member 31, and a projecting piece that fits into the bifurcated portion 33 at the end of the other member 32. 34 is formed. A sliding hole 35 is formed in the projecting piece 34 in the length direction, and the pin 36 of the bifurcated portion 33 is slidably fitted in the sliding hole 35. Further, a hole 37 into which the protruding piece 34 enters is formed at the end of one member 31.
For this reason, the pin 36 can be slid into the sliding hole 35 and the one member 31 can be advanced and retracted in the axial direction with respect to the other member 32 (the arrow direction in FIG. 4A). As shown in FIGS. 4A to 4B, the robot can be raised (rotated) upward. When the one member 31 advances to the other member 32, the sliding hole 35 is slightly narrower in front of the end, and the pin 36 fits into the end of the sliding hole 35 by forcibly passing through this narrow portion, As shown in FIGS. 2 and 3, the ends of both the members 31 and 32 are fitted together, and the both members 31 and 32 are fixed on the same axis by fitting the protrusions 34 into the holes 37.

As shown in FIG. 3, the dependent shaft 40 has a rectangular block 41 at one end fitted in the recess 27 of the rotor 26 so as to be movable in the radial direction of the rotor 26 with the key groove structure 28. During the movement, the keyway structure 28 always maintains parallel to the main shaft 30.
The coil spring 43 is loaded in the radial bottomed hole 42 of the block 41 in the radial direction. When the spring 43 is loaded, the block 41 fitted in the groove 27 is screwed to the rotor 26 of the cover 44. Attached to the rotor 26. At this time, since the spring 43 is in a compressed state, the dependent shaft 40 is pushed toward the main shaft 30 by the biasing force of the spring 43. In the pushed state, the dependent shaft 40 may be in contact with the main shaft 30, but may have a gap (gap) about the thickness of the smallest cable P to be bent. For example, when the cable P is shown in FIG. 13 and the thickness is 0.68 mm, the diameters of both shafts 30 and 40 are 5 mm, and the circumferential curvature R is 2.5 mm, the distance between the shaft centers of both shafts Is 5.68 mm (gap: 0.68 mm).

  The bending apparatus 10 has the above-described configuration. In order to bend the cable P, the scale 12 of the rotating disk 11 is fixed to the mark 13 so that the required bending angle θ is obtained. For example, it is fixed according to “90” degrees.

  In this state, as shown in FIGS. 4 (a) to 4 (b), one member 31 of the main shaft 30 is erected and separated from the dependent shaft 40 (FIG. 2 chain line state). The cable P is fed onto the shaft 40. At this time, the feeding direction is the cable feeding length direction X of the device 10. Thereafter, as shown by a solid line in FIG. 2, one member 31 of the main shaft 30 is tilted and fitted to the other member 32 to be the same shaft, and the cable P is sandwiched between the main shaft 30 and the dependent shaft 40. At this time, the shafts 30 and 40 sandwich the cable P with an appropriate clamping force by the spring 43.

  From this state, when the telescopic device 21 is operated to move the moving element 22, the rotational movement (rolling) of the pinion 24 on the rack 25 causes the rotating movement of the rotor 26 to move in the rolling direction of the pinion 24. To do. As the rotor 26 rotates, the main shaft 30 rolls on the cable P and the dependent shaft 40 revolves around the main shaft 30. As the dependent shaft 40 revolves, the cable P is bent along the main shaft 30 by the dependent shaft 40 as shown in FIGS. 5 (a) to 5 (c) and FIGS. 6 (a) to (f). It is done.

  At this time, since the main shaft 30 rolls on the cable P, it moves almost without sliding (without causing sliding resistance). Further, the dependent shaft 40 is integral with the main shaft 30 and revolves around the main shaft 30 so that its axis is always located on the same radial direction a as viewed from the main shaft 30 rolling as shown in FIG. In order to do this (because the axis moves on the cycloid curve), the cable P is bent along the main axis 30 with almost no slip. For this reason, the shield layer 3 and the outer skin 4 are hardly creased or torn by sliding (sliding resistance) on the cable P between the shafts 30 and 40.

  When the bending of the cable P is finished, the cable P is moved outward in the axial direction of both shafts 30 and 40 and taken out from the shafts 30 and 40. At this time, if one member 31 of the main shaft 30 can be raised (if it can be in the state shown in FIG. 4B), the cable P is taken out in that state. Thereafter, the cable P is bent by the same action.

  When the bending angle θ of the cable P is 90 degrees, for example, 100 degrees or 135 degrees, the rotating disk 11 is rotated and fixed so that the angle of the scale 12 matches the mark 13, and then the bending jig 20 is attached to the above-described bending jig 20. Thus, the cable P is bent as shown by the solid line in FIG. 7 or FIG.

FIG. 9 to FIG. 10 show another embodiment. In this embodiment, the dependent shaft 40 rotates around the main shaft 30 by the planetary gear mechanism including the sun gear 51, the planetary gear 52 and the external gear 53 shown in FIG. 9.・ It is intended to revolve.
The external gear 53 is rotated from the outside. For example, in the bending apparatus (reference numeral 10) shown in FIGS. 3 to 6 of Patent Document 3, the external gear 53 is provided on a bearing stand and is handled by a handle. Rotate freely.
The sun gear 51 is fixed to a fixed base such as the above-mentioned bearing stand, the main shaft 30 is coaxially attached to the sun gear 51, and the dependent shaft 40 is also coaxially attached to the planetary gear 52. The sun gear 51 and the planetary gear 52 have the same size and number of teeth.

Accordingly, as shown above, as shown in FIGS. 10 (a) to 10 (f), the cable P is fed between the main shaft 30 and the subordinate shaft 40 and sandwiched (FIG. 10 (a)). When the external gear 53 is rotated as shown by the arrow in FIG. 9, the planetary gear 52 revolves around the sun gear 51 while rotating as the external gear 53 rotates.
As the planetary gear 52 rotates and revolves, the dependent shaft 40 also rotates and revolves around the main shaft 30, and the cable P is moved around the main shaft 30 by the dependent shaft 40 as shown in FIGS. Bent along.

  At this time, the dependent shaft 40 revolves while rotating around the main shaft 30, and the size and the number of teeth of the sun gear 51 and the planetary gear 52 are the same. It revolves while rolling around 30 and bends the cable P along the main axis 30 without almost sliding. On the other hand, there is no movement in the length direction X of the cable P, and the main shaft 30 does not move, so that almost no slip occurs between the cable P and the main shaft 30. For this reason, similarly, the shield layer 3 and the outer skin 4 are not wrinkled or torn by sliding (sliding resistance) on the cable P between the shafts 30 and 40.

  FIG. 11 shows still another embodiment. In the embodiment of FIG. 9, a rotating body 61 is provided in, for example, the bearing stand in place of the external gear 53, and the main shaft 30 is coaxially penetrated through the rotating body 61. It is attached (fixed) to a fixed object such as a bearing stand so as to be rotatable via 62, and the dependent shaft 40 is rotatably attached to a rotating body 61 with a bearing 63.

Similarly, in this embodiment, when the cable P is fed and sandwiched between the main shaft 30 and the subordinate shaft 40 and the rotating body 61 is rotated by a handle or the like in this state, the subordinate shaft is rotated along with the rotation of the rotating body 61. Reference numeral 40 revolves around the main shaft 30.
As the dependent shaft 40 revolves, the cable P is bent along the main shaft 30. At this time, since the dependent shaft 40 is freely rotatable, the cable P is bent with almost no slip due to rotation with friction with the cable P. Further, since the cable P does not move in the length direction and the main shaft 30 does not move, there is almost no slippage between the cable P and the main shaft 30. Therefore, similarly, the shield layer 3 and the outer skin 4 are not wrinkled or torn due to the sliding (sliding resistance) of the shafts 30 and 40 on the cable P.

  In this embodiment, as shown in FIG. 12, if the gears 64 and 64 having the same size and the same number of teeth are provided coaxially on the shafts 30 and 40 and the gears 64 and 64 are meshed with each other, With the same relationship as the planetary gear 52, the dependent shaft 40 revolves while rolling around the main shaft 30 via the cable P, and bends the cable P along the main shaft 30 with almost no slip.

  In each of the above embodiments, the main shaft 30 can be bent. However, the dependent shaft 40 may be bent in the same manner, or only the dependent shaft 40 may be bent.

The flexible flat high-frequency cable P for high-speed transmission that can be employed in the present invention is not limited to that shown in FIG. 13, but can be applied to all flexible flat high-frequency cables for high-speed transmission whose transmission characteristics deteriorate due to bending.
The present invention is not limited to the flexible flat high-frequency cable P for high-speed transmission, but is also used in a flat cable P ′ having a conventional conductor of 0.035 to 0.3 mm and a thickness of about 0.16 to 0.3 mm. Of course, it is possible to obtain the same action that does not cause wrinkles.

  Thus, it should be considered that the embodiments disclosed herein are illustrative and non-restrictive in every respect, and the scope of the present invention is not limited to the above meaning, but is defined by the claims. And all modifications within the meaning and scope equivalent to the terms of the claims are intended to be included.

DESCRIPTION OF SYMBOLS 10 Bending apparatus 11 Turntable 12 Scale 13 Mark 20 Bending jig 21 Telescopic device 22 Mover 24 Pinion 25 Rack 26 Rotor 30 Main shaft 31 One member 32 of the main shaft 33 Other member 33 of the main shaft Bifurcated portion 34 of one member Projection piece 35 of the other member Projection slide hole 36 Slide pin 37 Insertion hole 40 of projection piece Dependent shaft 41 Block fixed to the dependent shaft 43 Spring 51 urging the dependent shaft toward the main shaft 51 Sun gear 52 Planet Gear 53 External gear 61 Rotating plate (Rotating body)
62, 63 Bearing 64 Gear D Worktable P Flexible flat high-frequency cable X for high-speed transmission Feeding length direction Y of flexible flat high-frequency cable for high-speed transmission Bending direction of flexible flat high-frequency cable for high-speed transmission α With respect to the length direction X of the main shaft Inclination angle θ Bending angle of flexible flat high-frequency cable for high-speed transmission a Center axis direction of dependent axis viewed from main axis

Claims (10)

A flexible flat cable (P) is inserted between a pair of parallel main shafts (30) and a subordinate shaft (40), and one side of the parallel flat shafts (30, 40) is used as a boundary ( In a state where P) is fixed, the other side of the flexible flat cable (P) is bent in a direction (Y) inclined with respect to the length direction (X) of the one side flexible flat cable (P),
The main shaft (30) is a round bar, and the main shaft (30) is tilted with respect to the length direction (X) of the flexible flat cable (P) on the one side. While rolling on the flexible flat cable (P), the slave shaft (40) is moved around the main shaft so that its axis is always located on the same radial direction (a) when viewed from the main shaft (30). A cable bending method characterized by revolving and bending the flexible flat cable (P) on the other side in a direction (Y) inclined with respect to the length direction (X) by revolving the dependent axis (40). . A flexible flat cable (P) is inserted between a pair of parallel main shafts (30) and a subordinate shaft (40), and one side of the parallel flat shafts (30, 40) is used as a boundary ( In a state where P) is fixed, the other side of the flexible flat cable (P) is bent in a direction (Y) inclined with respect to the length direction (X) of the one side flexible flat cable (P),
Each of the main shaft (30) and the subordinate shaft (40) is a round bar, and the main shaft (30) is inclined with respect to the length direction (X) of the flexible flat cable (P) on the one side. In a fixed position, the dependent shaft (40) rotates and revolves around the main axis, and the revolving of the dependent shaft (40) causes the flexible flat cable (P) on the other side to move in the length direction (X). A method of bending a cable, wherein the cable is bent in a direction (Y) inclined with respect to the axis, and the slip between the subordinate shaft (40) and the flexible flat cable (P) is eliminated by the rotation of the subordinate shaft (40).   The cable bending method according to claim 1 or 2, wherein the flexible flat cable is a flexible flat high-frequency cable (P) for high-speed transmission.   It consists of a parallel pair of main shafts (30) and a subordinate shaft (40). The main shaft (30) is a round bar and is rotatable, and the subordinate shaft (40) is integrated around the main shaft. The cable bending jig which performs the cable bending method of Claim 1 which can be revolved.   The main axis (30) and the subordinate axis (40) consist of parallel pairs, and the main axis (30) and the subordinate axis (40) are respectively round bars, and the subordinate axis (40) rotates and revolves around the main axis. The cable bending jig which performs the cable bending method of Claim 2 which provided the means.   A means for revolving and rotating the dependent shaft (40) around the main shaft is constituted by a planetary gear mechanism, and the axis of the main shaft (30) is positioned on the axis of the sun gear (51) of the planetary gear mechanism, The dependent shaft (40) is connected to the planetary gear (52) of the planetary gear mechanism, and the outer gear (53) of the planetary gear mechanism is rotated while the sun gear (51) is fixed, so that the dependent shaft ( The cable bending jig according to claim 5, wherein 40) is revolved and rotated around the main axis.   Means for revolving and rotating the dependent shaft (40) around the main shaft is fixed to the base by allowing the main shaft (30) to rotate freely on the central axis of the rotating plate (61) provided on the base. The cable bending jig according to claim 5, wherein a dependent shaft (40) is rotatably provided around the main shaft of the rotating plate (61).   At least one of the main shaft (30) and the subordinate shaft (40) is such that a portion (31) inserted through the flexible flat cable (P) can be bent with respect to the other portion (32), The cable bending jig according to any one of claims 4 to 7, wherein the bent portion of the main shaft (30) and the subordinate shaft (40) is opened by the bending.   The slave shaft (40) can be freely contacted and separated from the main shaft (30), and the slave shaft (40) is biased toward the main shaft (30) by a spring (43). The cable bending jig according to any one of claims 4 to 8.   The main spindle is mounted by attaching the cable bending jig (20) according to any one of claims 4 to 9 to a turntable (11) provided on a work table (D) and turning the turntable (11). A cable bending apparatus characterized in that the axial direction of (30) can be made different from the feeding length direction (X) of the flexible flat cable (P).

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