JP2020061832A - Linear body holding structure - Google Patents

Abstract

To provide a linear body holding structure capable of saving space while preventing entanglement and disconnection even when the number of flexible linear bodies increases.SOLUTION: A carrier cable 5 and a toothed belt 6 are provided in two layers. The carrier cable 5 holds a flexible linear member 4 along the length thereof. The toothed belt 6 is used as a power supply cable. Curved portions 7 and 8 are provided at intermediate portions in a longitudinal direction of the carrier cable 5 and the toothed belt 6. While moving the curved portions 7 and 8, relative movement of portions 2 and 3 with the flexible linear body 4 interposed therebetween is followed. Thickness of the carrier cable 5 is reduced to reduce radius of curvature of the curved portions 7 and 8.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a linear body holding structure that holds a plurality of flexible linear bodies interposed between relatively moving parts.

  Generally, in industrial equipment and electronic equipment, power is supplied between moving parts such as linear motion robots and sliders so that electric power, various signals, air pressure, hydraulic pressure, etc. can be transmitted. A flexible linear body such as a cable, a communication cable, or a tube for piping for sending air or oil is interposed.

  As a structure for preventing the flexible linear body interposed in such a relatively moving portion from being entangled or broken, for example, Patent Document 1 discloses a U-shaped thin plate 101 having elasticity. There is disclosed a cable carrier that holds a cable 103 on both sides of a thin plate 101 in a bendable manner and moves by mounting a plurality of upper and lower cable guides 102 alternately (see FIG. 3).

  In the cable carrier of Patent Document 1, by separately storing the cables 103 on both sides of the thin plate 101, the cables 103 are entangled with each other and are broken due to stress, or the cables 103 are electrically influenced to generate signals between the cables 103. It is possible to eliminate problems such as noise and malfunction of the device.

JP, 2003-244831, A (claim 1, claim 2, paragraph 0035, Drawing 9).

  However, although the cable carrier of Patent Document 1 can separate and store a plurality of cables, if the number of cables is further increased, the risk of cable entanglement and disconnection is suppressed, so that the number of cables increases according to the number of cables. It is necessary to increase the storage capacity of the carrier.

  In order to increase the storage capacity of the cable carrier, it is necessary to enlarge the cable carrier in the width direction and the thickness direction, which increases the space required for arranging the cable carrier.

  Moreover, if the radius of curvature of the curved portion of the cable carrier is constant, the gap between the cable guides for allowing the bending of the cable carrier increases with an increase in the thickness of the cable carrier, which increases the internal cable size. Expose. In order to prevent excessive bending of the cable carrier and suppress the gap between the cable guides, it is necessary to increase the radius of curvature in the curved portion, which increases the space required in the height direction of the cable carrier.

  An object of the present invention is to provide a linear body holding structure capable of saving space while preventing entanglement and disconnection even when the number of flexible linear bodies increases.

  In order to achieve the above-mentioned object, the linear body holding structure according to the present invention is for holding a plurality of flexible linear bodies interposed between relatively moving parts. A holding member that holds the flexible linear body along its length and a belt having a core made of a conductive material are arranged side by side in the thickness direction to make the holding member and the belt flexible. The linear body has a curved portion that is curved in the thickness direction at an intermediate portion in the longitudinal direction, and is capable of following the relative movement of the portion while moving the curved portion.

  According to the above configuration, since the holding member that holds the flexible linear body along its length direction and the belt having the core made of a conductive material are arranged in the thickness direction, The belt can be used as, for example, a power supply cable or a communication cable, and since it is not necessary to hold these with a holding member, the thickness of the holding member can be reduced. As a result, the holding member can be slightly bent without causing undue deformation, and the radius of curvature of the bending portion provided on the holding member so as to be able to follow relative movement is reduced to increase the height of the holding member. The space required in the vertical direction can be reduced.

  Further, the belt may be provided inside the curved portion with respect to the holding member.

  According to this configuration, the belt that can be bent to a smaller size is provided inside the curve, so that the belt can be arranged in the dead space inside the holding member, and the space for the linear body holding structure can be further saved. If the belt is provided as a member separate from the holding member, the space required in the height direction of the holding member can be reduced, and the belt may be provided on the curved outer side of the holding member.

  Further, the belt may be used as a power supply cable or the belt may be used as a communication cable.

  According to this configuration, since the belt is used as the power supply cable or the communication cable, the power supply cable or the communication cable can be separated from the holding member, and the holding member is the other of the power supply cable and the communication cable. Even when holding, the noise can be prevented from getting on the communication cable.

  Further, the belt may be used as a power supply and communication cable.

  With this configuration, since it is not necessary to hold both the power supply cable and the communication cable with the holding member, the thickness of the holding member can be further reduced, and the space required in the height direction of the holding member can be further reduced. Can be made smaller.

  Alternatively, the belts may be provided on both sides of the holding member in the thickness direction so that the belt on one side is used as a power supply cable and the belt on the other side is used as a communication cable.

  With this configuration, the power supply cable and the communication cable can be completely separated by sandwiching the holding member, and it is possible to more reliably prevent noise caused by the power supply cable from riding on the communication cable.

  Further, another linear body holding structure according to the present invention is for holding a plurality of flexible linear bodies interposed between relatively moving parts, and A holding member that holds the body along its length direction is provided in a plurality of layers, and each holding member has a bending portion that bends in the thickness direction at an intermediate portion in the length direction of the flexible linear body, The curved portion can be moved to follow the relative movement of the portion.

  According to the above configuration, since the holding member that holds the flexible linear member along the length direction is provided in a plurality of layers, the thickness of the holding member that constitutes each layer can be reduced. With this, each holding member can be slightly bent without causing excessive deformation, and the radius of curvature of the bending portion provided in the holding member so as to be able to follow relative movement is reduced to reduce the holding member. The space required in the height direction can be reduced.

  Further, the holding member may be a carrier cable formed by rotatably connecting a plurality of cable guides.

  According to this configuration, the carrier cable, which is difficult to bend small like a belt, is used as the holding member, but by adopting the above configuration of the present invention, the space required in the height direction of the holding member is made relatively small. be able to. In particular, by arranging the carrier cable on the outside of the curve where the radius of curvature is larger than that of the belt or the holding member on the inside of the curve, it is possible to save space in the structure for holding the linear object and to make it possible to use various flexible linear objects. Can be retained without.

  Further, at least a part of the flexible linear body may be a piping tube that contains a fluid.

  According to this structure, the flexible linear body is held by the belt or another holding member by holding the piping tube by either the holding member provided separately from the belt or the holding member provided in a plurality of layers. It is possible to prevent the tube for piping from being entangled and deformed, and it is possible to provide a preferable aspect of the present invention.

  Further, at least a part of the flexible linear body may be a power supply cable or a communication cable.

  According to this structure, by holding the power supply cable or the communication cable by either the holding member provided separately from the belt or the holding members provided in a plurality of layers, the flexible member is held by the belt or another holding member. It is possible to prevent the power feeding cable and the communication cable from being entangled and deformed by being separated from the linear body. In particular, by holding one of the power supply cable and the communication cable, the communication cable and the power supply cable that causes noise to the communication cable can be separated, and a preferred aspect of the present invention is provided. You can

  As described above, according to the present invention, the holding member for holding the flexible linear member along the length direction thereof and the belt having the core wire made of a conductive material are arranged in parallel in the thickness direction. Accordingly, the thickness of each holding member is reduced by providing the holding member in a plurality of layers. With this, each holding member can be bent to a small size without causing undue deformation, and even when the number of flexible linear members increases, the linear members can be prevented from being entangled or broken. Space saving of the holding structure can be achieved.

Perspective view of the linear body holding structure according to the present invention The figure which shows the state which moved the upper end part of the carrier cable and belt of FIG. Perspective view of conventional cable carrier

  Hereinafter, modes for carrying out the linear body holding structure according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the linear body holding structure 1 is interposed between the parts 2 and 3 that relatively move, for example, in a linear motion robot or a slider equipped in industrial equipment. The flexible linear members 4 are used to hold the plurality of flexible linear members 4 serving as communication cables and prevent the flexible linear members 4 from being entangled or broken. A carrier cable 5 as a holding member for holding the sprocket along its length direction and a toothed belt 6 as a power feeding cable are provided in two layers, and the carrier cable 5 and the toothed belt 6 are flexible linear. The body 4 has curved portions 7 and 8 in the middle portion in the lengthwise direction, and is capable of following the relative movement of the portions 2 and 3 while moving the curved portions 7 and 8.

  The relatively moving portions 2 and 3 are supported by upper and lower two guide grooves 10 and 11 formed in the base body 9, and the upper portion 2 is movable along the guide groove 10 and the lower portion. 3 is immovably fixed to a predetermined position of the guide groove 11 by a screw 12.

  The carrier cable 5 has a structure in which a plurality of square-shaped cable guides 13 are rotatably connected in sequence, and accommodates and holds the flexible linear body 4 serving as a communication cable in an inner space thereof, and also has a total of two. It is folded in half. Both ends of the carrier cable 5 are attached to relatively moving parts 2 and 3 via fixtures 14 and 15, and relative positions of the parts 2 and 3 are changed while changing the position of the bending part 7 as a folding part. To follow the dynamic movement.

  The toothed belt 6 is an electrically conductive urethane belt formed by embedding a core wire 6a such as a steel core wire made of a conductive material in a belt body made of a non-conductive urethane, and is used as a power supply cable. The toothed belt 6 is folded in two as a whole and is arranged on the inner side of the curve than the carrier cable 5. The steel core wire has high durability against bending, and can be suitably used as the core wire 6a of the toothed belt 6 that is folded in two and follows the relative movement of the portions 2 and 3.

  Both ends of the toothed belt 6 are sandwiched between the fixing members 14 and 15 at both ends of the carrier cable 5 by a plate 16 that is cut so as to mesh with the belt teeth, and the position of the bending portion 8 as a folded portion To follow the relative movement of the parts 2 and 3. It should be noted that a flat plate or a clip without gear cutting can be used instead of the gear cut plate 16.

  According to the above configuration, the carrier cable 5 and the toothed belt 6 are provided in two layers, and the carrier wire 5 holds the flexible linear member 4 that is a communication cable, and the toothed belt 6 is used as a power feeding cable. There is. As a result, since it is not necessary to hold the power feeding cable, the cross-sectional dimension of the carrier cable 5 can be reduced, and the curved diameter can be reduced as the cross-sectional size is reduced, which saves space for the carrier cable 5. Can be planned.

  Moreover, since the toothed belt 6 that can be bent in a small size is arranged inside the curved portion of the carrier cable 5, the dead space of the carrier cable 5 can be used, and the space saving of the linear body holding structure 1 as a whole can be achieved. Can be achieved.

  Further, since the carrier cable 5 that holds the flexible linear body 4 that is the communication cable and the toothed belt 6 that serves as the power supply cable are completely separated from each other, noise generated by the power supply cable is generated by the communication cable. It is possible to reliably prevent the user from riding on the flexible linear member 4.

  It should be noted that the present invention is not limited to the above-described embodiment, and appropriate modifications can be made within the scope of the present invention. For example, the flexible linear body 4 held by the linear body holding structure 1 is not only a communication cable for transmitting various signals but also a power supply cable for transmitting electric power, or contains air or oil. It may be a tube for piping that transmits air pressure or hydraulic pressure, and the linear body holding structure 1 can be equipped not only with industrial equipment but also with other equipment such as electronic equipment.

  Further, the toothed belt 6 can be used not only as a power feeding cable but also as a communication cable, and can be used as both a power feeding and communication cable for both power feeding and communication.

  Further, not only the toothed belt 6 is provided on the curved inner side of the carrier cable 5, but the toothed belt 6 may be provided on the outer curved side of the carrier cable 5, or only the carrier cable 5 may be provided on two layers. The carrier cable 5 and the toothed belt 6 may be provided in three or more layers, for example, the toothed belts 6 may be provided on both sides in the thickness direction of the cable 5. A flat belt may be used instead of the toothed belt 6, and a flat cable may be used instead of the carrier cable 5.

1 linear body holding structure 2, 3 relatively moving part 4 flexible linear body (communication cable)
5 Carrier Cable 6 Toothed Belt 6a Core Wire 7, 8 Curved Part 9 Base Material 10, 11 Guide Groove 12 Screw 13 Cable Guide 14, 15 Fixing Tool 16 Plate

Claims (11)

A linear body holding structure for holding a plurality of flexible linear bodies interposed between relatively moving parts,
A holding member that holds the flexible linear body along its length direction, and a belt having a core made of a conductive material are arranged in parallel in the thickness direction, and the holding member and the belt are In addition, the flexible linear body has a curved portion that bends in a thickness direction at an intermediate portion in the lengthwise direction, and it is possible to follow the relative movement of the portion while moving the curved portion. Characteristic linear body holding structure.   The linear body holding structure according to claim 1, wherein the belt is provided on a curved inner side of the holding member.   The linear body holding structure according to claim 1 or 2, wherein the belt is a power feeding cable.   The linear body holding structure according to claim 1 or 2, wherein the belt is a communication cable.   The linear body holding structure according to claim 1 or 2, wherein the belt is a power feeding and communication cable.   The belt is provided on both sides with a holding member sandwiched in the thickness direction, one side of the belt is used as a power feeding cable, and the other side of the belt is used as a communication cable. Linear object holding structure. A linear body holding structure for holding a plurality of flexible linear bodies interposed between relatively moving parts,
A holding member for holding the flexible linear body along its length direction is provided in a plurality of layers, and each holding member is arranged in the thickness direction at an intermediate portion in the length direction of the flexible linear body. A linear body holding structure having a bending portion that bends and being capable of following the relative movement of the portion while moving the bending portion.   The linear member holding structure according to claim 1, wherein the holding member is a carrier cable in which a plurality of cable guides are rotatably connected to each other.   9. The linear body holding structure according to claim 1, wherein at least a part of the flexible linear body is a piping tube for containing a fluid.   At least one copy of the said flexible linear body was made into the cable for electric power feeding, The linear body holding structure in any one of Claims 1-9 characterized by the above-mentioned.   At least one part of the said flexible linear body was made into the cable for communication, The linear body holding structure in any one of Claims 1-10 characterized by the above-mentioned.

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