JP2004014181A - Cable distribution board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve transmitting efficiency of a multi-core cable 19 for transmitting a differential signal by reducing length difference of cable cores 21, 23 and 25 as much as possible without changing assembling twisting pitch of a plurality of first cable cores 21 and assembling twisting pitch of a plurality of second cable cores 23. <P>SOLUTION: Each switching rotation member 73 is alternatively switched to an inner and outer core distribution state that a first inserting hole 75 travels on an inside distribution circle 85 and a second inserting hole 77 travels on an outside distribution circle 87, and another outer and inner core distribution state that the first inserting hole 75 travels on the outside distribution circle 87 and the second inserting hole 77 travels on the inside distribution circle 85 while holding the same proportion. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board which turns and twists a plurality of first cable cores and a plurality of second cable cores in a collecting hole of a cable collecting member by rotating and dividing the cable.
[0002]
[Prior art]
A conventional technique will be described with reference to the drawings.
[0003]
FIG. 4 is a cross-sectional view of a conventional multi-core cable for differential signal transmission.
[0004]
In a storage area network (SAN), a fiber channel (FC), or the like that performs high-speed data transmission, a multicore cable 1 for differential signal transmission as shown in FIG. 4 is widely used.
[0005]
That is, as shown in FIG. 4, the differential signal transmission multi-core cable 1 includes a plurality of collectively twisted first cable cores 3 and a plurality of collectively twisted together with the plurality of first cable cores 3. A second cable core 5, an outer cover 7 provided by extrusion molding so as to surround the entire cable cores 3, 5, and a shielding metal tape 9 provided between the entire cable cores 3, 5 and the outer cover 7. It has.
[0006]
Here, each first cable core 11 is a quad stranded wire having four insulated wires 11, and each second cable core 5 is a quad stranded wire having four insulated wires 13. is there. An annular inner core unit 15 is formed by the plurality of first cable cores 3, and an annular outer core unit 17 concentric with the inner core unit 15 by the plurality of second cable cores 5. It is configured to be formed.
[0007]
By the way, in order to improve the transmission efficiency of the multi-core cable 1 for differential signals, it is necessary to minimize the difference in wire length between the first cable core 3 and the second cable core 5. Therefore, according to the difference in the core diameter between the two core units (the inner core unit 15 and the outer core unit 17), the collective twist pitch of the plurality of first cable cores 3 and the plurality of second cable cores are determined. 5, the twist ratio of the plurality of first cable cores 3 and the twist ratio of the plurality of second cable cores 5 are the same.
[0008]
Further, in order to stabilize the layer shape of the two core units 15 and 17, the twist direction of the plurality of first cable cores 3 and the twist direction of the plurality of second cable cores 5 are configured to be opposite. It is. That is, the twist direction of the plurality of first cable cores 3 is the left direction (or right direction), and the twist direction of the plurality of second cable cores 5 is the right direction (or left direction).
[0009]
[Problems to be solved by the invention]
However, the set twist pitch of the plurality of first cable cores 3 and the set twist pitch of the plurality of second cable cores 5 are changed according to the difference in the layer core diameter between the two core units 15 and 17. In addition, there is a problem that the operation of assembling and twisting the plurality of first cable cores 3 and the plurality of second cable cores 5 becomes complicated, and the manufacturing time of the multi-core cable 1 for differential signal transmission becomes longer.
[0010]
Furthermore, the collective twist pitch of the plurality of first cable cores 3 and the collective twist pitch of the plurality of second cable cores 3 are different, and the collective twist direction of the plurality of first cable cores 3 and the plurality of second cables Since the collective twist directions of the core wires 5 are opposite, the flexibility of the multi-core cable for differential signal transmission 1 is reduced, and the work efficiency of wiring and the like of the multi-core cable 1 for differential signal transmission is not improved. There is.
[0011]
Then, an object of the present invention is to provide a distribution board used for manufacturing a multicore cable which can solve the above-mentioned problems.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, the plurality of first cable cores and the plurality of second cable cores are rotated and split while being rotated, so that the cable is twisted in the assembly hole of the cable assembly member. In the distribution board
The distribution board body,
A dividing line rotating member provided rotatably around a horizontal dividing line rotational axis in the line dividing panel main body,
A first insertion hole through which the first cable core is inserted, and a second insertion cable which are provided on the branch rotation member at equal intervals in a circumferential direction and are rotatable around a horizontal switching rotation axis; A plurality of switching rotary members each having a second insertion hole through which the core wire is inserted symmetrically with respect to the switching rotary axis;
Each switching rotary member is concentric with the first insertion hole passing on an inner segment circle centered on the segment rotation axis and the second insertion hole having a diameter larger than the diameter of the inner segment circle. An inner / outer line state passing on the outer outer line circle, and an outer / inner line state where the first insertion hole passes on the outer line circle and the second insertion hole passes on the inner line circle. A rotation mechanism for rotating / returning the switching rotary members by 180 degrees around the switching rotary axis at the same time intervals by the rotation of the shunting rotating members so as to alternately switch while maintaining the same ratio. And characterized in that:
[0013]
According to the invention specified in claim 1, the plurality of first cable cores and the plurality of second cable cores form an annular inner layer core unit and an annular outer layer core concentric with the inner layer core unit. The plurality of first cable cores and the plurality of second cable cores are turned and twisted in the collecting hole of the cable collecting member so that a wire unit is formed.
[0014]
That is, the first cable core is inserted into the first insertion hole of each switching rotation member, and the second cable core is inserted into the second insertion hole of each switching rotation member. Further, the plurality of first cable cores and the plurality of second cable cores are inserted into the collecting holes of the cable collecting member. Then, by rotating the shunt rotation member about the shunt rotation axis, the shunting is performed while rotating the plurality of first cable cores and the plurality of second cable cores. As a result, the plurality of first cable cores and the plurality of second cable cores are turned and twisted in the assembly hole of the cable assembly member (cable core assembly twisting step).
[0015]
In the cable core wire assembly twisting step, the rotating mechanism rotates / returns the switching rotary members by 180 degrees around the switching rotary axis under the same time intervals by rotating the branching rotary member. By doing so, each switching rotary member is alternately switched between the inner / outer line segment state and the outer / inner line segment state while maintaining the same ratio. Accordingly, the first cable core turns so as to draw an inner layer locus corresponding to the inner layer core unit, and the second cable core turns so as to draw an outer layer locus corresponding to the outer layer core unit. Inner / outer layer trajectory state and outer / inner layer trajectory state in which the first cable core turns so as to draw the outer layer trajectory and the second cable core turns so as to draw the inner layer trajectory, respectively, at the same ratio. It can be made to switch alternately while maintaining.
[0016]
The multi-core cable manufactured through the above-described cable core assembly twisting process is as follows.
[0017]
That is, each of the second cable cores overlaps with each of the first cable cores to form a cable core set. Further, each cable core set may be such that the first cable core forms a part of the inner layer core unit and the second cable core forms a part of the outer layer core unit along the entire cable length direction. And an outer / inner layer forming state in which the first cable core forms a part of the outer core unit and the second cable core forms a part of the inner core unit. At the same time, switching can be performed alternately while maintaining the same ratio.
[0018]
Therefore, in the multi-core cable, the layer core diameter of the inner layer core unit and the layer core of the outer layer core unit are respectively defined by the plurality of first cable cores and the plurality of second cable cores. It can be considered that the same imaginary layer core unit having the layer core diameter with the averaged diameter is formed. Therefore, without changing the collective twist pitch of the plurality of first cable cores and the collective twist pitch of the plurality of second cable cores, the twist ratio of the plurality of first cable cores and the second By making the twist rate of the cable cores the same, the wire length difference between the first cable core and the second cable core is reduced as much as possible, and the transmission efficiency of the multicore cable can be improved.
[0019]
In addition, since the second cable cores overlap the first cable cores to form the respective cable core sets, the set twist direction of the plurality of first cable cores and the plurality of second cable cores are set. The layer shape of the two core units (the inner core unit and the outer core unit) is stabilized without reversing the twist direction of the cable cores.
[0020]
According to the second aspect of the invention, in addition to the matters specified in the first aspect, each switching rotary member includes a rotation driven gear,
The rotation mechanism,
A rotating main drive gear that is provided on the distribution board main body, is meshable with the rotation driven gear, and rotates in conjunction with the rotation of the division rotation member;
The dividing board main body is provided symmetrically with the rotating main driving gear about the dividing line rotation axis, and can mesh with the rotation driven gear, and rotates in conjunction with the rotation of the dividing line rotating member. With a return rotation driving gear,
The switching driven members and the rotating main driving gear in each switching rotating member rotate each switching rotating member by 180 degrees around the switching rotation axis, respectively, and the rotation driven gear and the rotation driven gear in each switching rotating member. It is characterized in that the switching rotation members are respectively rotated by 180 degrees around the switching rotation axis by a meshing action of the return rotation driving gear.
[0021]
According to the second aspect of the present invention, in addition to the first aspect of the present invention, when the shunt rotation member rotates about the shunt rotation axis, the rotary driving gear is interlocked. While rotating, the rotation driven gears of the plurality of switching rotating members sequentially mesh with the rotating main driving gear, and the meshing action causes the plurality of switching rotating members to be sequentially rotated by 180 degrees around the switching rotation axis. Rotate. Further, when the shunt rotation member rotates about the shunt rotation axis, the rotation driven gear rotates in conjunction with the rotation driven gear, and the rotation driven gears in the plurality of switching rotation members sequentially correspond to the rotation driven gear. The meshing action causes the plurality of switching rotary members to sequentially return and rotate by 180 degrees about the switching rotary axis. Thereby, the rotating main driving gear and the rotating main driving gear may be in a symmetrical positional relationship with respect to the center line rotation axis. It is possible to switch alternately while maintaining the same ratio with the state.
[0022]
According to the third aspect of the present invention, in addition to the first or second aspect of the present invention, an annular ring gear provided on an outer peripheral portion of the dividing line rotating member, and the dividing line A power extraction gear rotatably provided on the panel body, meshing with the ring gear, and being operatively connected to the rotating driving gear and the return rotating driving gear.
[0023]
According to the third aspect of the present invention, in addition to the operation of the first or second aspect of the present invention, when the segment rotation member rotates about the axis of the segment rotation, The power extraction gear rotates due to the meshing action of the link gear and the power extraction gear, and the rotating driving gear and the return rotation driving gear rotate in conjunction with each other.
[0024]
In the invention according to claim 4, in addition to the invention-specifying matter according to any one of claims 1 to 3, the plurality of the plurality of first holes in the collecting hole of the cable collecting member. In order to swivel and twist and twist a plurality of third cable cores together with one cable core and the plurality of second cable cores, a plurality of third cable cores are provided between adjacent ones of the branch rotation members in the branch rotation member. A plurality of holes having a diameter obtained by averaging the diameters of the inner branch circle and the outer branch circle, passing through the concentric middle branch line, and through which the third cable core is inserted. And a third insertion hole.
[0025]
According to the fourth aspect of the present invention, in addition to the action of the first aspect of the present invention, the third cable core is provided in each third insertion hole. The wires are inserted respectively, and the plurality of third cable cores are inserted into the collecting hole of the cable collecting member together with the plurality of first cable cores and the plurality of second cable cores. Then, by rotating the shunt rotation member about the shunt rotation axis, the plurality of first cable cores, the plurality of second cable cores, and the plurality of third cable cores are formed. Make a spin while rotating. Thereby, the plurality of third cable cores can be swirled together with the plurality of first cable cores and the plurality of second cable cores in the collecting hole of the cable collecting member to perform a collective twist.
[0026]
According to the invention specifying matter described in claim 5, in addition to the invention specifying matter described in any one of claims 1 to 4, the plurality of the plurality of cables are arranged in the collecting hole of the cable collecting member. In order to turn the first cable core and the plurality of second cable cores and collectively twist them so as to wind around the center interposition, an interposition insertion is provided at the center of the branch line rotating member, and the center interposition is inserted. And a hole.
[0027]
According to the fifth aspect of the present invention, in addition to the effect of the first aspect of the present invention, the interposition insertion hole and the cable assembly member may have the same function as those of the first to fourth aspects. Insert the center interposition into the collecting hole. Then, by rotating the shunt rotation member about the shunt rotation axis, the shunting is performed while rotating the plurality of first cable cores and the plurality of second cable cores. Thereby, the plurality of first cable cores and the plurality of second cable cores can be turned and twisted so as to wind around the center interposition in the collecting hole of the cable collecting member.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0029]
FIG. 3 is a sectional view of the multi-core cable for differential signal transmission according to the embodiment of the present invention.
[0030]
As shown in FIG. 3, the multi-core differential signal transmission cable 19 according to the embodiment of the present invention is composed of a plurality of (four in the embodiment of the present invention) first twisted twisted cable cores. A wire 21, a plurality of (two in the embodiment of the present invention) twisted collectively and the second cable core 23, and a plurality of the plurality of twisted (four in the embodiment of the present invention) ), A central interposition 27 arranged at the center of the gathering of the entire cable cores 21, 23, 25, and a shielding metal tape attached so as to wind the entire cable cores 21, 23, 25. 29, and an outer cover 31 formed by extrusion molding so as to surround the entire cable cores 21, 23, 25 together with the shielding metal tape 29.
[0031]
The plurality of second cable cores 23 form a cable core set ST so as to overlap with each first cable core 21, and are collectively twisted together with the plurality of first cable cores 23. It is. A plurality of (four in the embodiment of the present invention) cable core sets ST are arranged at equal intervals in an arbitrary cross section of the multi-core cable 19 for differential signal transmission. Further, the plurality of third cable cores 25 are arranged between the adjacent cable core sets ST, and are collectively twisted together with the plurality of first cable cores 21 and the plurality of second cable cores 23. Things.
[0032]
Each of the first cable cores 21 is a quad stranded wire having four insulated wires 33, and each of the second cable cores 23 is a quad stranded wire having four insulated wires 35, Each of the third cable cores 25 is a quad strand including four insulated wires 37. Here, the quad twist pitch of each first cable core 21, the quad twist pitch of each second cable core 23, and the quad twist pitch of each third cable core 25 are configured to be the same. The quad twist direction of each first cable core 21, the quad twist direction of each second cable core 23, and the quad twist direction of each third cable core 25 are configured to be the same.
[0033]
The plurality of first cable cores 21 and the plurality of second cable cores 23 form an annular inner core unit 39 and an annular outer core unit 41 concentric with the inner core unit 39. It is configured to be performed. Further, the plurality of third cable cores 25 have an average layer core diameter d3 of the layer core diameter d1 of the inner layer core unit 39 and the layer core diameter d2 of the outer layer core unit 41, and are concentric and It is configured to form an annular intermediate-layer core unit 43.
[0034]
Then, the respective cable core sets ST are alternately switched along the entire cable length direction (the front and back direction in FIG. 3 toward the paper surface) while maintaining the inner / outer layer forming state and the outer inner layer forming state at the same ratio. It is composed.
[0035]
Here, the inner and outer layer forming state is a state in which the first cable core 21 forms a part of the inner core unit 39 and the second cable core 23 forms a part of the outer core unit 41. That is, the two cable core sets ST located on the upper side and the left side in FIG. 3 are in the state where the inner and outer layers are formed. The outer / inner layer forming state refers to a state in which the first cable core 21 forms a part of the outer core unit 41 and the second cable core 23 forms a part of the inner core unit 39. In FIG. 3, two cable core sets ST located on the lower side and the left side are in the state of forming the outer and inner layers.
[0036]
The outer cover 31 is made of a material appropriately selected from a PVC material, an eco material, and an NHFR material.
[0037]
Next, a cable manufacturing system 45 that manufactures the differential signal transmission cable 19 will be described with reference to FIGS.
[0038]
FIG. 1A is a view of the dividing line rotating member in FIG. 1B viewed from above, and FIG. 1B is a left side view of a dividing board according to the embodiment of the present invention. FIG. 2 is a schematic front view of the cable manufacturing system according to the embodiment of the present invention.
[0039]
Here, "left" refers to the top in FIG. 1 (a), the table facing the page in FIG. 1 (b), and the left in FIG. 2, and "right" refers to in FIG. 1 (a). Bottom, the back in FIG. 1 (b) toward the page, and the right in FIG. 2; “up” refers to the top in FIGS. 1 (b) and 2 and the top in FIG. 1 (a). The term "below" refers to a table, and "below" refers to the bottom in FIGS. 1B and 2 and the back in FIG. 1A toward the paper.
[0040]
As shown in FIG. 2, the cable manufacturing system 45 according to the embodiment of the present invention includes a hollow drive shaft 47 extending in the left-right direction. It is rotatable about the axis C about the axis.
[0041]
An inner / outer layer core supply gauge 51 is integrally provided on the right portion of the drive shaft 47, and the inner / outer layer core supply gauge 51 includes a plurality of first core bobbins 53 for sending out the first cable core 21 and A second core bobbin 55 for sending out the second cable core 2 is provided. A middle outer layer core supply gauge 57 is integrally provided at the center of the drive shaft 47, and a plurality of third core bobbins 59 for sending out the third cable 25 are provided on the intermediate layer core supply gauge 57. Are provided respectively. Further, on the right side of the drive shaft 47, there is provided an intervening bobbin 61 for sending out the center interposition 27 to the distribution board 63 via the inside of the drive shaft 47.
[0042]
In FIG. 2, only two first core bobbins 53 and second core bobbins 55 are shown, and only three third core bobbins 59 are shown. Actually, the number of the first core bobbins 53 and the number of the second core bobbins 55 are four in accordance with the number of the cores 21 and the number of the second cable cores 23, respectively. In practice, the number of the third core bobbins 59 is four.
[0043]
A distribution board 63 is disposed on the left side of the intermediate layer core supply gauge 57, and a cable assembly 65 is provided on the left side of the distribution board 63. The cable assembly 65 is directed to the left. It has a gathering hole 67 that becomes thinner. As will be described in detail later, the branching board 63 rotates the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25, thereby dividing the cable. It is turned in the collecting hole 67 of the collecting member 65 to form a twist. The details of the distribution board 63 will be described as follows.
[0044]
That is, as shown in FIG. 1, the distribution board 63 has a U-shaped distribution board main body 69 as a base, and a circular dividing rotation member 71 is provided on the distribution board main body 69. It is provided so as to be rotatable about the rotation axis C, and the left end of the drive shaft 47 is integrally connected to the center of the segment rotation member 71.
[0045]
A plurality of switching rotation members 73 rotatable about a horizontal switching rotation axis C ′ are provided at equal intervals in the circumferential direction on the dividing line rotation member 71, and each switching rotation member 73 is provided with a first cable. A first insertion hole 75 through which the core wire 23 is inserted and a second insertion hole 77 through which the second cable core 23 is inserted are symmetrically provided with respect to the switching rotation axis C ′. Further, each switching rotary member 73 includes rotation driven gears 79 and 81 in two stages on the left and right, respectively.
[0046]
The switching board body 69 is provided with a plurality of switching rotating members by rotating the dividing line rotating members 71 so that the switching rotating members 73 are alternately switched between an inner / outer dividing state and an outer / internal dividing state while maintaining the same ratio. A rotation mechanism 83 for alternately rotating / returning the rotation of the motor 73 by 180 degrees about the switching rotation axis C 'at the same time interval is provided.
[0047]
Here, the inner / outer dividing state means that the first insertion hole 75 passes on the inner dividing circle 85 centered on the dividing line rotation axis C and the second inserting hole 77 is the diameter D1 of the inner dividing circle 85. This refers to a state in which the switching rotary member 73 located on the left side in FIG. 1 is on the inner / outer-segmented state. The outer / inner line state refers to a state in which the first insertion hole passes on the outer line circle and the second insertion hole passes on the inner line circle, and is located on the right side in FIG. The switching rotary member is in the outer / inner line dividing state.
[0048]
The rotation mechanism 83, which is a main component of the distribution board 63, will be described in more detail. A rotation driving gear 89 that can mesh with the rotation driven gear 79 is provided at an upper part of the distribution board main body 69. At the lower part of the panel body 69, a return rotary driving gear 91 that can mesh with the rotary driven gear 81 is provided symmetrically with the rotary driving gear 81 about the line rotation axis C. Further, a ring gear 93 is provided on the outer peripheral portion of the dividing line rotating member 73 so that the rotating driving gear 89 and the returning rotating driving gear 91 rotate in conjunction with the rotation of the dividing line rotating member 71. A power extraction gear 95 meshed with a ring gear 93 is rotatably provided at an appropriate position on the panel body 69, and the power extraction gear 95 is connected to a rotary driving gear 89 via a plurality of connecting belts 97 and the like. A plurality of connecting belts 99 are interlockedly connected to the return rotary driving gear 91 respectively.
[0049]
Here, each switching rotation member 73 is rotated by 180 degrees about the switching rotation axis C ′ by the meshing action of the rotation driven gear 79 and the rotation driving gear 89 in each switching rotation member 73, and the rotation of each switching rotation member 73 is controlled. Each switching rotary member 73 is configured to return and rotate by 180 degrees about the switching rotation axis C ′ by the meshing action of the rotation driven gear 81 and the return rotation driving gear 91.
[0050]
In addition, in order to turn and twist the plurality of third cable cores 25 together with the plurality of first cable cores 21 and the plurality of second cable cores 23 in the collecting hole 67 of the cable collecting member 65, a branch line is used. A plurality of third insertion holes 101 through which the third cable core 25 is inserted are provided at equal intervals in the circumferential direction between adjacent switching rotation members 73 in the rotation member 71. The plurality of third insertion holes 101 have a diameter D3 obtained by averaging the diameter D1 of the inner dividing line 85 and the diameter D2 of the outer dividing line 87, and extend along the concentric middle dividing line 103. It is configured to pass.
[0051]
Further, the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 are turned in the collecting hole 67 of the cable collecting member 65 so as to be wound around the center interposition 105. In the center of the dividing line rotating member 71, an insertion hole 105 through which the center interposition 27 is inserted is provided.
[0052]
As shown in FIG. 3, on the left side of the cable assembly member 65, a tape winding machine 107 for mounting the shielding metal tape 31 around the entire cable strands 21, 23, 25 that are twisted together is arranged. On the left side of the winder 107, there is disposed a core conveyor 109 for sending out the entire cable cores 21, 23, 25 to which the shielding metal tape 31 is attached to the left. On the left side of the core conveyor 109, a core winding machine 111 for winding the entire cable core 21, 23, 25 sent leftward is arranged.
[0053]
The entire cable cores 21, 23, and 25 wound by the core wire winding machine 111 are conveyed to a final cable manufacturing system (not shown), and the entire cable cores 21, 23, and 25 are processed by the final cable manufacturing system. , 25 are extruded.
[0054]
Next, the cable manufacturing method according to the embodiment of the present invention will be described including the operation.
[0055]
The cable manufacturing method includes a cable core wire assembly twisting step, a shielding tape winding step, and a sheath forming step, and the cable manufacturing system 45 is used in the cable core wire assembly twisting step and the shielding tape winding step. The final cable manufacturing system is used in the outer shell forming step.
[0056]
Here, the cable core process refers to a process in which a plurality of first cable cores, a plurality of second cable cores, and a plurality of third cable cores are swirled and collectively twisted, and the shielding is performed. The tape winding step refers to a step of attaching a shield tape around the entire outer periphery of the collectively twisted cable cores, and the outer shell forming step includes surrounding the entire collectively twisted cable cores. This refers to the step of extruding the outer skin.
[0057]
The more specific contents of the cable core wire assembly twisting step are as follows.
[0058]
That is, the first cable core 21 is inserted into the first insertion hole 75 of each switching rotation member 73, and the second cable core 23 is inserted into the second insertion hole 77 of each switching rotation member 73. Further, the third cable core 25 is inserted into each of the third insertion holes 93, and the central interposition 27 is inserted into the interposition insertion hole 97. Further, the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 are inserted into the collecting hole 67 of the cable collecting member 65 with the center interposition 27 as a center.
[0059]
Then, the drive shaft 47 is rotated about the dividing line rotation axis C by the driving of the rotation motor 49, and the inner and outer layer core supply cages 51, the outer and inner layer core supply cages 57, and the division rotating member 71 are integrated. Rotate to. As a result, the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 are split while rotating, and swirled in the collecting hole 67 of the cable collecting member 65. It can be set and twisted. Further, the center bobbin 27 is sent by the bobbin 61 through the inside of the drive shaft 47 to the bobbin insertion hole 97, so that the plurality of first cable cores 21 and the plurality of second cable cores 23 are centered 27. Can be twisted together to be wound around.
[0060]
In the process where the plurality of first cable cores 21 and the plurality of second cable cores 23 are collectively twisted, when the segment rotating member 71 rotates about the segment rotating axis C, the link gear 93 and the power extracting gear are rotated. The power extraction gear 95 rotates and the rotating main driving gear 89 rotates in conjunction therewith, and the rotation driven gears 79 in the plurality of switching rotating members 73 sequentially mesh with the rotating main driving gear 89, and this meshing operation causes The plurality of switching rotation members 73 are sequentially rotated by 180 degrees about the switching rotation axis C ′. When the shunt rotation member 73 rotates about the shunt rotation axis C, the power extraction gear 95 rotates due to the meshing action of the link gear 93 and the power extraction gear, and the return rotation driving gear 91 rotates in conjunction therewith. At the same time, the rotation driven gears 81 of the plurality of switching rotating members 73 are sequentially meshed with the return rotation main driving gear 91, and the plurality of switching rotating members 73 are sequentially returned by 180 degrees around the switching rotation axis C 'by this meshing action. Rotate. As a result, the rotation driving gear 89 and the return rotation driving gear 91 may be in a symmetrical positional relationship with respect to the shunt rotation axis C, so that the switching rotation members 73 are switched and rotated at the same time intervals. Rotation / return rotation can be performed by 180 degrees around the axis C ′, and the switching rotation members 73 are alternately switched between the inner / outer dividing state and the outer / inside dividing state while maintaining the same ratio. can do. Therefore, in the cable core wire assembly twisting step, each cable core set ST can be alternately switched between the inner and outer layer trajectory states and the outer and inner layer trajectory states while maintaining the same ratio.
[0061]
Here, the inner / outer layer trajectory condition means that the first cable core wire 21 is turned in the collecting hole 67 of the cable collecting member 65 so as to draw an inner layer trajectory corresponding to the inner layer core unit 39 and the second cable core wire is drawn. 23 refers to a state of turning so as to draw an outer layer trajectory corresponding to the outer layer core unit 41, and the outer / inner path state means that the first cable core 21 in the collecting hole 67 of the cable collecting member 65 It refers to a state in which the cable turns so as to draw the outer layer locus and the second cable core wire 23 turns so as to draw the inner layer locus.
[0062]
In addition, since the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 are collectively twisted by the rotation of the branching rotation member 73, the plurality of first cables The collective twist pitch of the core wires 21, the collective twist pitch of the plurality of second cable cores 23, and the collective twist pitch of the plurality of third cable cores 25 are the same, and the collective twist of the plurality of first cable cores 21. The direction, the collective twist direction of the plurality of second cable cores 23, and the collective twist direction of the plurality of third cable cores 25 are the same.
[0063]
In addition, when the plurality of first cable cores 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 are collectively twisted by one set twist pitch, each of the cable core sets ST is formed. The state is switched alternately between the inner and outer layer trajectory states and the outer and inner layer trajectory states a plurality of times to return to the original trajectory state, but may be switched four or more times.
[0064]
The shielding tape winding step and the outer skin forming step will be briefly described as follows.
[0065]
That is, the tape winding machine 107 is appropriately operated to mount the shielding metal tape 31 around the entire twisted cable cores 21, 23, 25. Then, the entire core 21, 23, 25 to which the shielding metal tape 31 is attached is conveyed leftward by appropriately operating the core conveyor 109, and the entire core 21 is operated by the operation of the core winding machine 111. , 23 and 25 are wound up. Thus, the shielding tape winding step is completed.
[0066]
After the shield winding step is completed, the entire cable cores 21, 23, and 25 to which the shield metal tape 31 is attached are transferred to the final cable manufacturing system, and the entire cable cores are operated by the operation of the final cable manufacturing system. The outer skin is extruded so as to surround 21, 23, 25. Thereby, the outer shell forming step is completed, and finally the multi-core cable 19 for differential signal transmission can be manufactured.
[0067]
In the cable core set twisting step, each cable core set ST is alternately switched while maintaining the inner / outer layer trajectory state and the outer / inner layer trajectory state at the same ratio. The core cable 19 is as follows.
[0068]
That is, in the multi-core cable 19 for differential signal transmission, the respective cable core sets ST are alternately maintained in the same ratio between the inner and outer layer forming states and the outer and inner layer forming states along the entire cable length direction. It can be switched. Accordingly, the plurality of first cable cores 21 and the plurality of second cable cores 23 average the layer core diameter d1 of the inner layer core unit 39 and the layer core diameter d2 of the outer layer core unit 41, respectively. It can be considered that the same virtual layer core unit having the diameter d3 is formed. Further, the intermediate layer core unit 43 having the same layer core diameter d3 as the virtual layer core unit can be formed by the plurality of third cable cores 25. Therefore, even if the collective twist pitch of the plurality of first cable cores 21, the collective twist pitch of the plurality of second cable cores 23, and the collective twist pitch of the plurality of third cable cores 25 are the same, in other words, For example, without changing the collective twist pitch of the plurality of first cable cores 21, the collective twist pitch of the plurality of second cable cores 23, and the collective twist pitch of the plurality of third cable cores 25, By setting the twist rate of the cable core 21, the twist rate of the plurality of second cable cores 23, and the collective twist pitch of the plurality of third cable cores 25 to be the same, three types of cable cores (first cable The transmission efficiency of the multi-core cable 19 for differential transmission can be improved by minimizing the difference in the wire length between the core 21, the second cable 23, and the third cable 25).
[0069]
In addition, since the plurality of second cable cores 23 overlap the first cable cores 21 to form the respective cable core sets ST, the set twist direction of the plurality of first cable cores 21 and the plurality of The layer shape of the two core units (the inner core unit 39 and the outer core unit 41) is stabilized without reversing the set twist direction of the second cable core 23.
[0070]
As described above, according to the embodiment of the present invention, the collective twist pitch of the plurality of first cable cores 21, the collective twist pitch of the plurality of second cable cores 23, and the The transmission efficiency of the multi-core cable 1 for differential signal transmission can be improved by changing the wire length difference between the three types of cable cores 21, 23, 25 as much as possible without changing the set twist pitch. The collective twisting work of the first cable core 21, the plurality of second cable cores 23, and the plurality of third cable cores 25 is simplified, and the manufacturing time of the differential signal transmission multi-core cable 1 is reduced.
[0071]
The collective twist pitch of the plurality of first cable cores 21, the collective twist pitch of the plurality of second cable cores 23, and the collective twist pitch of the plurality of third cable cores 25 are the same, and the plurality of Since the collective twist direction of one cable core 21, the collective twist direction of the plurality of second cable cores 23, and the collective twist direction of the plurality of third cable cores 25 can be the same, the differential signal transmission The flexibility of the core cable 19 is increased, and the work efficiency such as the wiring work of the multi-core cable 19 for differential signal transmission is improved.
[0072]
The present invention is not limited to the above-described embodiment of the present invention. For example, the present invention may be applied to multi-core cables other than the multi-core cable 19 for differential signal transmission, or may be applied to each cable core 21 ( 23, 25) each consisting of a quad twisted wire having four insulated wires 33 (35, 37), instead of a twisted pair wire having two insulated wires or an optical fiber core It can be changed to one equipped with
[0073]
【The invention's effect】
According to the invention described in any one of Claims 1 to 5, the collective twist pitch of the plurality of first cable cores and the collective twist pitch of the plurality of second cable cores are changed. The transmission efficiency of the multi-core cable can be improved by minimizing the wire length difference between the first cable core and the second cable core without increasing the plurality of first cable cores and the plurality of first cable cores. The work of assembling and twisting the second cable core is simplified, and the time for manufacturing the multi-core cable is shortened.
[0074]
Further, since the collective twist pitch of the plurality of first cable cores and the collective twist pitch of the plurality of second cable cores can be the same, the flexibility of the multicore cable increases, Work efficiency such as multi-core cable wiring work is improved.
[Brief description of the drawings]
FIG. 1A is a top view of a dividing line rotating member in FIG. 1B, and FIG. 1B is a sectional view of a dividing board according to an embodiment of the present invention. It is a left side view.
FIG. 2 is a schematic front view of the cable manufacturing system according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view of the multi-core cable for differential signal transmission according to the embodiment of the present invention.
FIG. 4 is a sectional view of a conventional multi-core cable for differential signal transmission.
[Explanation of symbols]
19 Multi-core cable for differential signal transmission
21 First cable core
23 Second cable core
25 Third cable core
27 Central intervention
29 skin
31 Shielding metal tape
39 Inner layer core unit
41 Outer core unit
43 Middle-strand core unit
45 Cable manufacturing system
63 branch board
65 Cable assembly
67 Assembly Hole
69 branch board body
71 branch rotation member
73 Switchable rotating member
75 1st insertion hole
77 2nd insertion hole
81 rotating passive gear
83 Rotary driven gear
83 Rotation mechanism
85 Inner branch line circle
87 Outside branch line circle
89 rotating drive gear
91 Return rotation driving gear
93 ring gear
95 Power Extraction Gear
99 Third insertion hole
103 Middle branch line circle
105 Insertion hole

Claims (5)

In a branching board which turns and twists in a collecting hole of a cable collecting member by rotating and splitting a plurality of first cable cores and a plurality of second cable cores,
The distribution board body,
A dividing line rotating member provided rotatably around a horizontal dividing line rotational axis in the line dividing panel main body,
A first insertion hole through which the first cable core is inserted, and a second insertion cable which are provided on the branch rotation member at equal intervals in a circumferential direction and are rotatable around a horizontal switching rotation axis; A plurality of switching rotary members each having a second insertion hole through which the core wire is inserted symmetrically with respect to the switching rotary axis;
Each switching rotary member is concentric with the first insertion hole passing on an inner segment circle centered on the segment rotation axis and the second insertion hole having a diameter larger than the diameter of the inner segment circle. An inner / outer line state passing on the outer outer line circle, and an outer / inner line state where the first insertion hole passes on the outer line circle and the second insertion hole passes on the inner line circle. A rotation mechanism for rotating / returning the switching rotary members by 180 degrees around the switching rotary axis at the same time intervals by the rotation of the shunting rotating members so as to alternately switch while maintaining the same ratio. A distribution board characterized by comprising: Each switching rotary member includes a rotation driven gear,
The rotation mechanism,
A rotating main drive gear that is provided on the distribution board main body, is meshable with the rotation driven gear, and rotates in conjunction with the rotation of the division rotation member;
The dividing board main body is provided symmetrically with the rotating main driving gear about the dividing line rotation axis, and can mesh with the rotation driven gear, and rotates in conjunction with the rotation of the dividing line rotating member. With a return rotation driving gear,
Each of the switching rotating members is rotated by 180 degrees around the switching rotation axis by the meshing action of the rotation driven gear and the rotating main driving gear in each switching rotating member, and the rotation driven gear in each switching rotating member is 2. The distribution board according to claim 1, wherein each switching rotary member is configured to return rotation by 180 degrees around the switching rotation axis by a meshing operation of the return rotation driving gear. 3. An annular ring gear provided on the outer peripheral portion of the dividing line rotating member; and the rotatable driving gear and the return rotating main driving gear rotatably provided on the distribution board main body and meshing with the ring gear. 3. The distribution board according to claim 2, further comprising a power extraction gear interlocked with the power extraction gear. In order to twist and twist a plurality of third cable cores together with the plurality of first cable cores and the plurality of second cable cores in the assembly hole of the cable assembly member, the branch line rotating member , Each of which is provided between adjacent ones of the cable core sets, has a diameter obtained by averaging the diameter of the inner branch circle and the diameter of the outer branch circle, and has a concentric middle branch line. The distribution board according to any one of claims 1 to 3, further comprising a plurality of third insertion holes through which the third cable core wire passes. . In order to twist and twist the plurality of first cable cores and the plurality of second cable cores so as to wind around a center interposition in the assembly hole of the cable assembly member, The distribution board according to any one of claims 1 to 4, further comprising an insertion hole provided at a center and through which the center insertion is inserted.

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