JP2018152982A - Unit cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit cable capable of improving detachment/attachment easiness relative to a rod-like member.SOLUTION: A unit cable 1A includes a plurality of cables 2A to 2C internally having a plurality of conductive wires 21 to 23 and a cable protection member 3 internally having part of the cables 2A to 2C. The cable protection member 3 includes opposing projections 32, 33 in an opposing direction. Inner peripheral surfaces 32a, 33a form a support space section 3b for supporting a rod-like member 100. End surfaces 34, 35 are formed to have a gap 3c smaller than a diameter d2 of the rod-like member. The projections 32, 33 are formed to allow elastic deformation in a direction to separate end surfaces 34, 35 from each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a unit cable.

  Conventionally, mainly for the purpose of labor saving of indoor wiring work, an electrical wiring system formed in advance by connecting necessary electrical wiring circuits in a factory, molding a connection portion, and pre-assembling a cable branch connection process, So-called unit cables are known. For example, Patent Document 1 discloses a unit cable having a configuration in which a plurality of two-core or three-core flat cables are bundled and aggregated into a single joint box (connection portion).

JP 2008-118764 A

  By the way, the unit cable may be fixed to a rod-like member having a configuration in which one end on the upper side is fixed to a concrete slab on the building side and suspended on the lower side, such as a suspension bolt. In this case, first, a rod-like member is inserted into the attachment hole provided in the connection portion of the unit cable, and then a nut or the like is attached to the rod-like member inserted through the attachment hole to fix the unit cable to the rod-like member. .

  On the other hand, when removing the unit cable from the rod-shaped member for changing the cable wiring layout or adding a cable, the nut is removed from the rod-shaped member, and the unit cable is pulled out from the lower end surface of the rod-shaped member. . For this reason, since the operation time which removes a unit cable from a rod-shaped member is required, there exists room for improvement about the improvement of the attachment / detachment ease of the unit cable with respect to a rod-shaped member.

  This invention is made | formed in view of the above, and aims at providing the unit cable which can improve the attachment or detachment ease with respect to a rod-shaped member.

  In order to achieve the above object, a unit cable according to the present invention includes a plurality of cables having a plurality of conductors therein, a cable protection member having a part of the plurality of cables inside and having an insulating property, The cable protection member has two protrusions facing each other in the facing direction, and the two protrusions are an inner peripheral surface, an outer peripheral surface, the inner peripheral surface, and the opposite surfaces facing each other in the facing direction. Each of the two inner peripheral surfaces is in contact with at least one of the outer peripheral surfaces of the rod-shaped members on which the cable protection member is supported. A support space for supporting the cable protection member with respect to the rod-shaped member, and the two end surfaces are formed such that a gap between the end surfaces is smaller than a diameter of the rod-shaped member, and the two projecting portions are , Is elastically deformable in a direction away two said end face even without, characterized in that.

  The two end faces are preferably formed to face each other in the facing direction, and the gap communicates with the outside at both ends in the space extending direction of the support space.

  Further, it is preferable that the two end surfaces are formed so that the gap is curved in a direction in which the two protruding portions face each other.

  The two protruding portions are formed at different positions in the space portion extending direction when viewed from the opposing direction and the direction orthogonal to the space portion extending direction of the support space portion. Are formed opposite to each other in the space extending direction, and the gap communicates with the outside at both ends in the facing direction.

  In the unit cable according to the present invention, in two projecting portions formed on the cable protection member and facing each other in the opposing direction, the inner peripheral surface forms a support space portion that supports the rod-shaped member, and the gap between the end surfaces is the rod-shaped member. Since the two projecting portions are elastically deformable in the direction separating the end surfaces, the two projecting portions are separated in the direction separating the end surfaces when the rod-shaped member is pulled out from the support space portion. By elastically deforming, the rod-shaped member can be pulled out from the support space through the gap between the end faces, so that the ease of attachment / detachment with respect to the rod-shaped member can be improved.

FIG. 1 is a perspective view of a unit cable according to the first embodiment. FIG. 2 is a front view of the unit cable according to the first embodiment. FIG. 3 is an operation explanatory diagram of the unit cable according to the first embodiment. FIG. 4 is a perspective view of a unit cable according to a modification of the first embodiment. FIG. 5 is a perspective view of a unit cable according to the second embodiment. FIG. 6 is a front view of a unit cable according to the second embodiment. FIG. 7 is a partial cross-sectional view of a unit cable according to the second embodiment. FIG. 8 is an operation explanatory diagram of the unit cable according to the second embodiment.

  Hereinafter, an embodiment of a unit cable according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same. The constituent elements in the following embodiments can be variously omitted, replaced, and changed without departing from the gist of the invention.

[Embodiment 1]
First, the unit cable according to the embodiment will be described. FIG. 1 is a perspective view of a unit cable according to the first embodiment. FIG. 2 is a front view of the unit cable according to the first embodiment. FIG. 3 is an operation explanatory diagram of the unit cable according to the first embodiment. Here, FIG. 3 is an explanatory diagram of an operation when the unit cable is detached from the rod-shaped member. The X direction in each figure is the opposing direction of the two protrusions in the unit cable. The Y direction in each figure is the direction in which the conducting wires are arranged inside the cable, and is the direction orthogonal to the facing direction. The Y1 direction is the drawing direction, and Y2 is the insertion direction. The Z direction in each figure is a space extending direction in the unit cable, and is a direction orthogonal to the facing direction and the arrangement direction. In the present embodiment, the Z direction is a direction that coincides with the vertical direction. The Z1 direction is the upward direction, and the Z2 direction is the downward direction.

  The unit cable 1A of the present embodiment is used, for example, for wiring an indoor ceiling cable for the purpose of labor saving of indoor wiring work in a building, and is fixed to a rod-like member 100 attached to the indoor ceiling part. Fixed to the indoor ceiling, that is, the building side. As shown in FIG. 1, the unit cable 1A includes a plurality of cables 2A to 2C and a cable protection member 3, and performs branch wiring processing on the plurality of cables 2A to 2C. The illustrated connecting portion is formed on the cable protection member 3 and pre-assembled (temporarily assembled). That is, the unit cable 1A has a plurality of cables including branch wirings without performing a branch wiring work of the plurality of cables 2A to 2C at a construction site of the cable wiring such as an indoor ceiling portion in the case of indoor wiring work. The wiring work of 2A to 2C can be performed.

  The rod-shaped member 100 in this embodiment is a suspension bolt, for example. The suspension bolt 100 supports the cable protection member 3 in the unit cable 1A. The suspension bolt 100 is generally used to suspend equipment such as pipes, ducts, and air conditioners, and to suspend a lightweight steel ceiling base (LGS). As shown in FIG. 3, the suspension bolt 100 is a long bar, and an upper end portion is fixed to a support body such as a concrete slab at a hierarchical boundary such as a ceiling, and the above-described support body is used. It is the bolt member of the structure suspended below. On the outer peripheral surface of the suspension bolt 100, a thread groove (uneven portion) that has been subjected to male thread processing is provided. The lower end of the suspension bolt 100 can be, for example, a free end. In the present embodiment, the suspension bolt 100 is suspended vertically downward from the support. That is, the suspension bolt 100 is installed such that the axis extends along the vertical direction.

  As shown in FIGS. 1 and 2, the cables 2 </ b> A to 2 </ b> C are flat cables having a plurality of core wires therein. The cables 2A to 2C in the present embodiment are “vinyl insulated vinyl sheathed cable flat type (VVF cable)” having three cores, and are formed into a flat type by arranging the core wires in one direction. Note that the number of core wires of the cables 2A to 2C is not limited to three. In the unit cable 1A in the present embodiment, three cables 2A to 2C formed in the same way are used. Each cable 2 </ b> A to 2 </ b> C includes a plurality of conducting wires 21, 22, 23, an insulator 24, and an exterior member 25.

  The plurality of conducting wires 21 to 23 are core wires in the cables 2A to 2C. The conducting wires 21 to 23 are metal wires (for example, copper wires) having conductivity and flexibility, and are formed in a circular cross section. The conducting wires 21 to 23 are the first conducting wire 21, the second conducting wire 22, and the third conducting wire 23 that are formed in the same manner. The conducting wires 21 to 23 are arranged in the cables 2A to 2C so that the extending directions of the conducting wires 21 to 23 coincide with each other. The conducting wires 21 to 23 in the present embodiment are arranged in the arrangement direction inside the cables 2A to 2C.

  The insulator 24 covers the outer peripheral surfaces of the conducting wires 21 to 23, respectively. The insulator 24 is formed by injection molding a synthetic resin (for example, vinyl chloride) on the outer peripheral surface side of the conducting wires 21 to 23. The insulator 24 has insulation and flexibility. That is, the insulator 24 can bend following the conductors 21 to 23 when the conductors 21 to 23 are bent in the wiring work. The insulator 24 is colored in different colors such as black, white, and red, for example, corresponding to the conductive wires 21 to 23. Thereby, the conducting wires 21 to 23 can be visually distinguished, and wiring and connection errors during wiring work can be prevented.

  The exterior member 25 is provided in the outermost shell of the cables 2A to 2C and is a so-called sheath. The exterior member 25 covers the outer side in the radial direction of each of the conducting wires 21 to 23 arranged in the arrangement direction, and a synthetic resin (for example, on the outer peripheral surface side), that is, the outer side in the radial direction of the conducting wires 21 to 23 arranged in the arrangement direction. (Vinyl chloride, etc.) is formed by injection molding. The exterior member 25 is formed in an oval cross section. The exterior member 25 has insulation and flexibility. That is, the exterior member 25 can bend following the flexible conductors 21 to 23 and the insulator 24 when they are bent.

  Here, a part of the cables 2 </ b> A to 2 </ b> C is embedded in the cable protection member 3. The portions to be buried are exposed portions and connecting portions (not shown) for connecting the conducting wires 21 to 23. In the exposed portion, in the middle of the extending direction of the cables 2A to 2C, each exterior member 25 and the insulator 24 are cut out along the extending direction of the cables 2A to 2C, and the conducting wires 21 to 23 are connected to the cables 2A to 2C. Each part is exposed to the outside. In the connecting portion, the conductors 21 to 23 in the exposed portions of the cables 2A to 2C are electrically connected between the cables 2A to 2C. A resistance welding method is used as an electrical connection method of the conductive wires 21 to 23.

  The cable protection member 3 aggregates the connection portions in the cables 2 </ b> A to 2 </ b> C and is supported by the suspension bolt 100 when the unit cable 1 </ b> A is attached to the suspension bolt 100. Moreover, the cable protection member 3 protects the conducting wires 21 to 23 exposed to the outside of the cables 2A to 2C in the exposed portion against a load from the outside. The cable protection member 3 includes at least a part of the cables 2A to 2C including the conductive wires 21 to 23 exposed to the outside of the cable 2 in a state where the cables 2A to 2C are arranged in the space extending direction. The cable protection member 3 is a synthetic resin having insulation properties, and a part including the exposed portion and the connection portion is embedded in the synthetic resin constituting the cable protection member 3 by insert molding, and integrated with the cables 2A to 2C. It is formed. The cable protection member 3 is formed in a substantially rectangular shape whose outer shape is the extension direction of the cables 2 </ b> A to 2 </ b> C when viewed from the space extending direction. In the cable protection member 3, the cables 2 </ b> A to 2 </ b> C protrude from both end portions 3 a in the longitudinal direction. The cable protection member 3 includes two projecting portions 32 and 33 that project outward from one of the side walls 31 of the side walls facing in the arrangement direction.

  The protrusions 32 and 33 are supported in contact with the suspension bolt 100. The protrusions 32 and 33 are opposed to each other in the opposing direction and are formed symmetrically with respect to the arrangement direction. The protrusions 32 and 33 are formed so as to protrude in the insertion direction as viewed from the space extending direction, and are close to each other in the opposing direction with the distal end surfaces being separated. The protrusions 32 and 33 are formed in a semicircular arc shape facing each other when viewed from the extending direction of the space. The projecting portions 32 and 33 have a fixed end integrated with the cable protection member 3 at the end portion on the side wall 31 side, the distal end surface becomes a free end, and can be elastically deformed in a direction to separate the end surfaces 34 and 35 described later. Is formed. The length of the protrusions 32 and 33 in the space extending direction is formed to be the same as the length of the side wall 31 in the space extending direction. The protrusion 32 has an inner peripheral surface 32 a, an outer peripheral surface 32 b, and an end surface 34. The protruding portion 33 has an inner peripheral surface 33 a, an outer peripheral surface 33 b, and an end surface 35.

  At least one of the inner peripheral surface 32 a and the inner peripheral surface 33 a is a surface that contacts the outer peripheral surface 100 a of the suspension bolt 100. The inner peripheral surface 32a and the inner peripheral surface 33a face each other in the opposing direction at the protrusions 32 and 33. The inner peripheral surfaces 32a and 33a are line-symmetric in the arrangement direction and are formed in a semicircular arc shape when viewed from the space extending direction. The inner peripheral surfaces 32a and 33a in the present embodiment are formed by connecting end portions on the side wall 31 side when viewed from the space extending direction. That is, the inner peripheral surfaces 32a and 33a are formed in one continuous cylindrical shape that is cut out at the distal end surfaces of the projecting portions 32 and 33 when viewed from the space extending direction. A support space 3b is formed by the inner peripheral surfaces 32a and 33a.

  The support space portion 3b is a space for supporting the cable protection member 3 with respect to the suspension bolt 100 when the suspension bolt 100 is inserted and the outer peripheral surface 100a of the suspension bolt 100 and at least one inner peripheral surface 32a, 33a contact each other. Part. The support space portion 3b is formed to extend in the space portion extending direction, and communicates with the outside at both ends in the space portion extending direction. The diameter d1 of the support space 3b is formed to be the same as or slightly smaller than the diameter d2 of the suspension bolt 100.

  The outer peripheral surfaces 32b and 33b are formed on the radially outer side with respect to the inner peripheral surfaces 32a and 33a when the space extending direction is the center, and are formed to face the inner peripheral surfaces 32a and 33a, respectively. is there. Similar to the inner peripheral surfaces 32a and 33a, the outer peripheral surfaces 32b and 33b are axisymmetric in the arrangement direction and formed in a semicircular arc shape when viewed from the space extending direction. As for the outer peripheral surfaces 32b and 33b, the edge part by the side wall 31 side connects with the side wall 31, respectively.

  The end surfaces 34 and 35 are surfaces that connect the inner peripheral surface 32a and the outer peripheral surface 32b, and the inner peripheral surface 33a and the outer peripheral surface 33b, respectively, in the protrusions 32 and 33. The end faces 34 and 35 are opposed to each other in the opposing direction and are spaced apart. The end surfaces 34 and 35 are each formed in a rectangular shape when viewed from the facing direction. The end surfaces 34 and 35 are formed in a straight line along the space extending direction as viewed from the arrangement direction. The end surfaces 34 and 35 are formed so as to be inclined so as to be separated from each other in the facing direction from the inner peripheral surfaces 32a and 33a toward the outer peripheral surfaces 32b and 33b when viewed from the space extending direction. A gap 3 c is formed between the end surface 34 and the end surface 35.

  The gap 3c is a space that communicates the support space 3b and the outside in the arrangement direction. The gap 3c is formed such that the length l1 in the facing direction when no external force is applied to the protrusions 32 and 33 is smaller than the diameter d2 of the suspension bolt 100. The gap 3c communicates with the support space 3b and the outside in the arrangement direction, and communicates with the outside at both ends in the space extending direction.

  Next, the attaching / detaching operation of the unit cable 1A with respect to the suspension bolt 100 will be described with reference to FIGS. First, the operation of removing the unit cable 1A from the suspension bolt 100 will be described. When a nut or the like is already attached to the lower end of the suspension bolt 100 and the cable protection member 3 cannot be pulled out from the lower end of the suspension bolt 100, the unit cable 1A attached to the suspension bolt 100 may be replaced. When attaching to another suspension bolt 100, the unit cable 1 </ b> A is removed from the suspension bolt 100. First, the worker applies an external force R <b> 1 in the pulling direction to the cable protection member 3, and moves the cable protection member 3 in the pulling direction with respect to the suspension bolt 100. At this time, since the length l1 of the gap 3c between the end surfaces 34 and 35 is smaller than the diameter d2 of the suspension bolt 100, the suspension bolt 100 positioned in the support space 3b in contact with the end surfaces 34 and 35 pushes the gap 3c. Thus, that is, the suspension bolts 100 enter the gap 3c from the support space 3b by elastically deforming the protrusions 32 and 33 in the direction of separating the end faces 34 and 35. Further, the worker continues to apply an external force R1 in the pulling direction to the cable protection member 3. At this time, as shown in FIG. 3, the suspension bolt 100 passes through the gap 3 c and is pulled out from the support space portion 3 b to the outside of the cable protection member 3 through the end surfaces 34 and 35. As a result, the support of the cable protection member 3 by the suspension bolt 100 is released, and the removal of the unit cable 1A from the suspension bolt 100 is completed.

  Next, the operation of attaching the unit cable 1A to the suspension bolt 100 will be described. When a new unit cable 1A is attached to the suspension bolt 100 from which the unit cable 1A has been removed, or when the removed unit cable 1A is attached to another suspension bolt 100, the suspension bolt 100 is inserted into the unit cable 1A. Install. First, the worker uses the suspension bolt so that the space extending direction of the gap 3c of the cable protection member 3 matches the axial direction of the suspension bolt 100, and the clearance 3c and the suspension bolt 100 face each other in the arrangement direction. The unit cable 1A is positioned with respect to 100. Next, the worker applies an external force R <b> 2 in the insertion direction to the cable protection member 3, and moves the cable protection member 3 in the insertion direction with respect to the suspension bolt 100. At this time, since the length l1 of the gap 3c between the end surfaces 34 and 35 is smaller than the diameter d2 of the suspension bolt 100, the suspension bolt 100 located outside the cable protection member 3 in contact with the end surfaces 34 and 35 has the clearance 3c. The suspension bolt 100 enters the gap 3c from the outside of the cable protection member 3 by elastically deforming the protrusions 32 and 33 in such a manner as to push and spread, that is, in a direction to separate the end faces 34 and 35. Furthermore, the worker continues to apply an external force R2 in the insertion direction to the cable protection member 3. At this time, as shown in FIG. 1, the suspension bolt 100 passes through the gap 3 c and is inserted into the support space portion 3 b from the outside of the cable protection member 3 through the end surfaces 34 and 35. The protrusions 32 and 33 are elastically restored when the suspension bolt 100 is inserted into the support space 3b, and at least one of the protrusion 32 and the inner peripheral surface 33a of the protrusion 33 has at least one of the suspension bolt 100. The cable protection member 3 is supported by the suspension bolt 100 by coming into contact with the outer peripheral surface 100a. Moreover, since the length l1 of the gap 3c between the end faces 34 and 35 is smaller than the diameter d2 of the suspension bolt 100 due to the elastic return of the protrusions 32 and 33, the unit cable 1A is removed from the suspension bolt 100. Absent. Thereby, the cable protection member 3 is supported by the suspension bolt 100, and the attachment of the unit cable 1A to the suspension bolt 100 is completed.

  The unit cable 1A according to the first embodiment has two projecting portions 32 and 33 facing the cable protection member 3 in the facing direction, and forms a support space portion 3b into which the suspension bolt 100 is inserted by the inner peripheral surfaces 32a and 33a. To do. The protrusions 32 and 33 include end faces 34 and 35 that face each other, and the length l1 of the gap 3c between the end faces 34 and 35 when no external force is applied to the protrusions 32 and 33 is the diameter d2 of the suspension bolt 100. Is formed smaller. Further, the protrusions 32 and 33 can be elastically deformed in a direction in which the end faces 34 and 35 are separated from each other in the facing direction. Accordingly, when the unit cable 1A is removed from the suspension bolt 100, the two protruding portions 32 and 33 elastically deform in the direction of separating the end surfaces 34 and 35 to remove the gap 3c between the end surfaces 34 and 35. The suspension bolt 100 can be pulled out from the support space portion 3b. Compared with the case where the cable protection member 3 can be pulled out only from the lower end of the suspension bolt 100, the cable protection member 3 can be removed by moving it in the pulling direction at a position supported by the suspension bolt 100. Therefore, the unit cable 1A can be easily detached from the suspension bolt 100. Similarly, the cable protection member 3 is moved in the insertion direction at a position where the cable protection member 3 is to be supported by the suspension bolt 100 as compared with the case where the cable protection member 3 can be inserted only from the lower end of the suspension bolt 100. Since the suspension bolt 100 can be inserted into the cable protection member 3, the unit cable 1 </ b> A can be easily attached to the suspension bolt 100. Thus, the unit cable 1A can improve the ease of attachment to and detachment from the suspension bolt 100.

  In addition, for example, in the structure in which the suspension bolt 100 is fixed to a concrete slab or the like provided between the floors of a building, one end on the upper side is fixed, and a ceiling frame with a ceiling panel fitted to the lower side is fixed, the unit cable 1A In some cases, it is desired to remove the unit cable 1A from the suspension bolt 100 by adding a cable to the cable or changing a cable layout for the building. In this case, in order to pull out the cable protection member 3 from the lower end surface of the suspension bolt 100, when the ceiling frame fixed to the lower end portion of the suspension bolt 100 must be removed, the unit cable 1A is removed. Is a heavy workload. On the other hand, in the case where the unit cable 1A has a ceiling frame or the like fixed to the lower end portion of the suspension bolt 100, the worker can pull the cable protection member 3 in the pulling direction with respect to the suspension bolt 100. Therefore, work time can be reduced and work load can be reduced, so that workability and workability can be improved.

  In the unit cable 1A according to the first embodiment, the projecting portions 32 and 33 are formed so that the end surfaces 34 and 35 are opposed to each other in the opposing direction, and the gap 3c is external at both ends in the space portion extending direction of the support space portion 3b. Therefore, the gap 3c is formed in a straight line along the extending direction of the space as viewed from the arrangement direction. Therefore, when the unit cable 1A is removed from the suspension bolt 100 and attached, the operator simply moves the cable protection member 3 in the arrangement direction with respect to the suspension bolt 100, so that the cable protection member 3 is attached to the suspension bolt 100. In contrast, it can be pulled out and inserted. Thereby, 1 A of unit cables can further improve the ease of attachment or detachment with respect to the suspension bolt 100. FIG.

[Modification]
Next, a modification of the unit cable 1 according to the first embodiment will be described. FIG. 4 is a perspective view of a unit cable according to a modification of the first embodiment. The unit cable 1A according to the modification is different from the unit cable 1A according to the first embodiment in the shapes of end surfaces 34 and 35 of later-described protrusions 32 and 33 of the cable protection member 3 and the shape of the gap 3c. In addition, about the structure, effect | action, and effect which are common in embodiment mentioned above, the overlapping description is abbreviate | omitted as much as possible.

  As shown in FIG. 4, the cable protection member 3 in the unit cable 1 </ b> A according to the modification has end faces 34 and 35 that face each other in the opposite direction, like the cable protection member 3 of the first embodiment. The end faces 34 and 35 are formed to bend in the opposite direction when viewed from the arrangement direction. The bending directions in the opposing direction of the end surface 34 and the end surface 35 are formed to coincide with each other. That is, the gap 3c is curved in the facing direction, and the length of the gap 3c in the facing direction is the same length along the space extending direction. The end faces 34 and 35 in the present embodiment are formed in a wave shape when viewed from the arrangement direction so that the gap 3c protrudes in both directions in the opposing direction with respect to a straight line connecting both ends in the space extending direction.

  Next, the operation of attaching / detaching the unit cable 1A to / from the suspension bolt 100 will be described, particularly the operation of removing the unit cable 1A from the suspension bolt 100. First, the worker applies an external force R <b> 1 in the pulling direction to the cable protection member 3, and moves the cable protection member 3 in the pulling direction with respect to the suspension bolt 100. At this time, since the length l1 of the gap 3c between the end surfaces 34 and 35 is smaller than the diameter d2 of the suspension bolt 100, the inner surfaces 32a and 33a connected to the end surfaces 34 and 35 abut in the arrangement direction. Further, when the worker continues to apply the external force R1 in the pulling direction to the cable protection member 3, the suspension bolt 100 positioned in the support space 3b expands the gap 3c, that is, the direction in which the end faces 34 and 35 are separated. By elastically deforming the protrusions 32 and 33, the suspension bolt 100 enters the gap 3c from the support space 3b after contacting the end surfaces 34 and 35. Further, the worker continues to apply the external force R1 in the pulling direction to the cable protection member 3, and the suspension bolt 100 is pulled out of the cable protection member 3, and the removal of the unit cable 1A from the suspension bolt 100 is completed. In addition, when the diameter d2 of the suspension bolt 100 is sufficiently large in the facing direction of the gap 3c, the contact area between the outer peripheral surface 100a of the suspension bolt 100, the inner peripheral surface 32a of the projecting portion 32, and the inner peripheral surface 33a of the projecting portion 33. May be moved in the drawing direction while rotating the cable protection member 3 around the arrangement direction with respect to the suspension bolt 100.

  As described above, the unit cable 1A according to the modified example is formed with the end faces 34 and 35 and the gap 3c curved in the opposite direction, so that the unit cable 1A is attached to the suspension bolt 100 with respect to the unit cable 1A. Even if a large external force is exerted in the pulling direction, the outer peripheral surface 100a of the suspension bolt 100 comes into contact with the inner peripheral surfaces 32a and 33a in the vicinity of the end surfaces 34 and 35 and is caught by the protruding portions 32 and 33 in the pulling direction. Further, the cable protection member 3 can be prevented from being pulled out from the suspension bolt 100, and the holding force of the unit cable 1A with respect to the suspension bolt 100 can be improved.

[Embodiment 2]
Next, the unit cable 1B according to the second embodiment will be described. FIG. 5 is a perspective view of a unit cable according to the second embodiment. FIG. 6 is a front view of a unit cable according to the second embodiment. FIG. 7 is a partial cross-sectional view of a unit cable according to the second embodiment. FIG. 8 is an operation explanatory diagram of the unit cable according to the second embodiment. Here, FIG. 7 is an SS cross-sectional view in FIG. The unit cable 1B according to the second embodiment is different from the unit cable 1A according to the first embodiment in the position where the later-described protruding portions 42 and 43 of the cable protection member 4 are formed on the side wall 41. In addition, about the structure, effect | action, and effect which are common in embodiment mentioned above, the overlapping description is abbreviate | omitted as much as possible.

  Similar to the cable protection member 3 in the unit cable 1A, the cable protection member 4 in the unit cable 1B has cables 2A to 2C inside, and the cables 2A to 2C protrude from both end portions 4a in the longitudinal direction. The cable protection member 4 has projecting portions 42 and 43 that project outward from one side wall 41 facing in the arrangement direction.

  As shown in FIGS. 5 to 7, the protruding portions 42 and 43 are formed to face each other in the opposite direction, like the protruding portions 32 and 33 in the unit cable 1 </ b> A of the first embodiment. The protrusions 42 and 43 are formed so as to protrude in the insertion direction as viewed from the space extending direction. The protrusions 42 and 43 are formed at different positions in the space extending direction as viewed from the arrangement direction. The protrusions 42 and 43 in the present embodiment are formed on one side wall 41, and the protrusion 42 is formed on the upper side and the protrusion 43 is formed on the lower side in the space extending direction. The protrusions 42 and 43 are formed in a circular arc shape facing each other in the opposing direction when viewed from the space extending direction, and one end is connected to the side wall 41 when viewed from the space extending direction. The other end surface, that is, the front end surfaces 44 and 45 are exposed to the outside. That is, the projecting portions 42 and 43 have end portions on the side wall 41 side as fixed ends integrated with the cable protection member 4, end portions on the front end surfaces 44 and 45 side become free ends, and end surfaces 46 and 47 described later are provided. It is formed so as to be elastically deformable in the separating direction. The protrusions 42 and 43 in the present embodiment are formed apart from each other in the space extending direction. The protrusions 42 and 43 are formed so that one end connected to the side wall 41 and the front end surfaces 44 and 45 are located at different positions with a support space 4b described later in the facing direction. Therefore, when viewed from the space extending direction, one end connected to the side wall 41 of the projecting portion 42 and the tip surface 45 are located on one side with the support space 4b interposed therebetween, and the tip surface 44, One end connected to the side wall 41 of the protrusion 43 is located on the other side of the support space 4b. When viewed from the extending direction of the space portion, the protruding portions 42 and 43 are partially opposed, ie, overlapped, in the extending direction of the space portion, including the front end surfaces 44 and 45.

  The inner peripheral surfaces 42a and 43a are surfaces that face each other in the opposing direction in the protruding portions 42 and 43, similarly to the inner peripheral surfaces 32a and 33a in the protruding portions 32 and 33 in the unit cable 1A of the first embodiment. The inner peripheral surfaces 42a and 43a are line-symmetric in the arrangement direction and are formed in an arc shape when viewed from the space extending direction. When viewed from the direction in which the space portion extends, the inner peripheral surfaces 42 a and 43 a are connected to the side wall 41 at one end and to the end surfaces 44 and 45 at the other end. When the inner peripheral surfaces 42a and 43a are viewed from the space portion extending direction, the protruding portions 42 and 43 are opposed to the space portion extending direction in a part including the tip surfaces 44 and 45, so that one continuous cylinder It is formed in a shape. A support space portion 4b is formed by the inner peripheral surfaces 42a and 43a.

  The support space 4b is a space in which the suspension bolt 100 is inserted, and the outer peripheral surface 100a of the suspension bolt 100 and at least one of the inner peripheral surfaces 42a and 43a are in contact with each other, thereby supporting the cable protection member 4 with respect to the suspension bolt 100. Part. The support space portion 4b is formed to extend in the space portion extending direction, and communicates with the outside at both ends in the space portion extending direction. The diameter d3 of the support space 4b is formed to be the same as or slightly smaller than the diameter d2 of the suspension bolt 100.

  The outer peripheral surfaces 42b and 43b are formed on the radially outer side with respect to the inner peripheral surfaces 42a and 43a with the space extending direction as the center, and are formed to face the inner peripheral surfaces 42a and 43a, respectively. is there. Similar to the inner peripheral surfaces 42a and 43a, the outer peripheral surfaces 42b and 43b are axisymmetric in the arrangement direction and formed in an arc shape when viewed from the space extending direction. When viewed from the space extending direction, the outer peripheral surfaces 42 b and 43 b are connected to the side wall 41 at one end and to the end surfaces 44 and 45 at the other end.

  The end surfaces 46 and 47 are surfaces that connect the inner peripheral surface 42a and the outer peripheral surface 42b, and the inner peripheral surface 43a and the outer peripheral surface 43b, respectively, in the protruding portions 42 and 43. The end surfaces 46 and 47 are surfaces facing each other in the projecting portions 42 and 43. The end surfaces 46 and 47 in the present embodiment are surfaces formed in the protruding portions 42 and 43 so as to face the space portion extending direction. As shown in FIGS. 5 and 8, the end surface 46 is a surface on the side facing the projecting portion 43 among the surfaces facing the space portion extending direction in the projecting portion 42. The end surface 47 is a surface of the protruding portion 43 that faces the protruding portion 42 among the surfaces that face the extending direction of the space portion. When viewed from the arrangement direction, the end faces 46 and 47 are partially formed to face each other in the space extending direction. The end faces 46 and 47 are formed in a straight line along the facing direction when viewed from the arrangement direction. That is, the end surfaces 46 and 47 are formed orthogonal to the extending direction of the support space portion 4b when viewed from the arrangement direction.

  The gap 4c is a space that communicates the support space 4b with the outside in the arrangement direction. The gap 4c is formed such that the length l2 in the extending direction of the space when no external force is applied to the protrusions 42 and 43 is smaller than the diameter d2 of the suspension bolt 100. The gap 4c communicates with the support space 4b and the outside in the arrangement direction, and communicates with the outside at both ends in the opposing direction.

  Next, the operation of attaching / detaching the unit cable 1B to / from the suspension bolt 100 will be described, particularly the operation of removing the unit cable 1A from the suspension bolt 100. First, as shown in FIG. 5, the worker applies an external force Q1 around the arrangement direction to the cable protection member 4 until the axial direction of the suspension bolt 100 and the extending direction (opposite direction) of the gap 4c match. The cable protection member 4 is rotated with respect to the suspension bolt 100. At this time, in the suspension bolt 100, the outer peripheral surface 100a of the suspension bolt 100 positioned in the support space portion 4b abuts against the end surfaces 46 and 47, and the length l2 of the gap 4c between the end surfaces 46 and 47 is greater than the diameter d2 of the suspension bolt 100. Therefore, the protrusions 42 and 43 are elastically deformed so as to expand the gap 4c, that is, in a direction to separate the end faces 46 and 47. Next, the worker applies an external force Q <b> 2 in the pulling direction to the cable protection member 4, and moves the cable protection member 4 in the pulling direction with respect to the suspension bolt 100. At this time, since the gap 4c has already been expanded, the suspension bolt 100 easily enters the gap 4c from the support space 4b. Furthermore, the worker continues to apply an external force Q2 in the pulling direction to the cable protection member 4. At this time, as shown in FIG. 8, the suspension bolt 100 passes through the gap 4 c and is pulled out from the support space portion 4 b to the outside of the cable protection member 4 through the end surfaces 46 and 47. As a result, the support of the cable protection member 4 by the suspension bolt 100 is released, and the removal of the unit cable 1B from the suspension bolt 100 is completed.

  Next, an operation for attaching the unit cable 1B to the suspension bolt 100 will be described. First, the worker is such that the extending direction (opposite direction) of the gap 4c of the cable protection member 4 matches the axial direction of the suspension bolt 100, and that the clearance 4c and the suspension bolt 100 face each other in the arrangement direction. The unit cable 1B is positioned with respect to the suspension bolt 100. Next, the worker applies an external force Q3 in the insertion direction to the cable protection member 4, and moves the cable protection member 4 in the insertion direction with respect to the suspension bolt 100. At this time, since the length l2 of the gap 4c between the end faces 46 and 47 is smaller than the diameter d2 of the suspension bolt 100, the suspension bolt 100 positioned outside the cable protection member 4 in contact with the end faces 46 and 47 removes the gap 4c. The suspension bolt 100 enters the gap 4c from the outside of the cable protection member 4 by elastically deforming the projecting portions 42 and 43 in a direction to spread the end surfaces 46 and 47 away from each other. Further, the worker continues to apply an external force Q3 in the insertion direction to the cable protection member 4. At this time, the suspension bolt 100 passes through the gap 4 c and is inserted into the support space portion 4 b from the outside of the cable protection member 4 through the end surfaces 46 and 47. Next, the worker applies an external force Q4 around the arrangement direction to the cable protection member 4 until the axial direction of the suspension bolt 100 and the space portion extending direction of the support space portion 4b coincide with each other as shown in FIG. The cable protection member 4 is rotated with respect to the suspension bolt 100. The protrusions 42 and 43 are elastically restored when the suspension bolt 100 is inserted into the support space 4b and rotated, and at least one of the protrusions 42 and 43 is suspended on the inner peripheral surface 42a of the protrusion 42 and the inner peripheral surface 43a of the protrusion 43. By contacting the outer peripheral surface 100 a of the bolt 100, the cable protection member 4 is supported by the suspension bolt 100. Further, since the protruding portions 42 and 43 are elastically restored, the length l2 of the gap 4c between the end surfaces 46 and 47 becomes smaller than the diameter d2 of the suspension bolt 100, so that the unit cable 1B is removed from the suspension bolt 100. Absent. Thereby, the cable protection member 4 is supported by the suspension bolt 100, and the attachment of the unit cable 1B to the suspension bolt 100 is completed.

  In the unit cable 1B according to the second embodiment, the protruding portions 42 and 43 are formed at different positions in the space extending direction when viewed from the facing direction and the arrangement direction, and the distal end surface 44 is viewed from the space extending direction. 45 are located at the protrusions 42 and 43 of each other. Moreover, since the end surfaces 46 and 47 which are surfaces which mutually oppose in the protrusion parts 42 and 43 are formed facing the space part extending direction in the protrusion parts 42 and 43, the clearance gap 4c is in the both ends in an opposing direction. Communicate with the outside. Therefore, in the state where the unit cable 1B is attached to the suspension bolt 100, even if a large external force in the pulling direction acts on the unit cable 1B, the outer peripheral surface 100a of the suspension bolt 100 is the inner peripheral surface 42a in the vicinity of the end surfaces 46 and 47. , 43a, and is caught by the protrusions 42, 43 in the pulling direction. Even if an external force in the pulling direction is simply applied to the suspension cable 100 on the unit cable 1B, the extending direction of the gap 4c intersects the pulling direction, and in this embodiment, the gap 4c is pushed. Spreading is suppressed. By these, it can suppress that the cable protection member 4 is pulled out from the suspension bolt 100, and the retention strength of the unit cable 1B with respect to the suspension bolt 100 can be improved.

  Although the rod-shaped member 100 in this embodiment and the modification is a suspension bolt, it is not limited thereto. For example, it may be a rod-shaped member in which no groove is formed on the outer peripheral surface. In this case, in order to maintain the attachment position of the cable protection members 3 and 4 with respect to the rod-shaped member 100, it is preferable to form the diameters d1 and d3 of the support space portions 3b and 4b sufficiently smaller than the diameter d2 of the rod-shaped member 100.

1A, 1B unit cable 2A to 2C cable 3 cable protection member 3a both ends 3b support space 3c gap 31 side wall 32 protrusion 32a inner peripheral surface 33 protrusion 33a inner peripheral surface 34, 35 end surface 4 cable protection member 4a both ends 4b Support space portion 4c Clearance 41 Side wall 42 Protruding portion 42a Inner peripheral surface 43 Protruding portion 43a Inner peripheral surface 44, 45 End surface 46, 47 End surface d1-d3 diameter

Claims (4)

A plurality of cables having a plurality of conductors therein;
A cable protection member having a part of the plurality of cables inside and having insulation properties,
The cable protection member is
Having two protrusions facing each other in the facing direction;
The two protrusions are
An inner peripheral surface facing in the facing direction;
An outer peripheral surface,
An end face connected to the inner peripheral face and the outer peripheral face and facing each other;
Each with
The two inner circumferential surfaces form a support space portion that supports the cable protection member with respect to the rod-shaped member by contacting at least one of the outer circumferential surfaces of the rod-shaped member on which the cable protection member is supported. And
The two end surfaces are formed such that the gap between the end surfaces is smaller than the diameter of the rod-shaped member,
The two protruding portions are elastically deformable in a direction separating at least two of the end faces.
A unit cable characterized by that. The two end faces are
Formed facing each other in the facing direction,
The gap communicates with the outside at both ends in the space extending direction of the support space.
The unit cable according to claim 1. The two end faces are
The gap is formed by being curved in the direction in which the two protrusions face each other.
The unit cable according to claim 2. The two protruding portions are formed at different positions in the space extending direction when viewed from the opposing direction and the direction orthogonal to the space extending direction of the support space,
The two end faces are
Formed to face each other in the space extending direction,
The gap communicates with the outside at both ends in the facing direction.
The unit cable according to claim 1.

Images