WO2017090447A1 - Protective member, protective member-equipped electric wire, and method for producing protective member - Google Patents

Protective member, protective member-equipped electric wire, and method for producing protective member Download PDF

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Publication number
WO2017090447A1
WO2017090447A1 PCT/JP2016/083394 JP2016083394W WO2017090447A1 WO 2017090447 A1 WO2017090447 A1 WO 2017090447A1 JP 2016083394 W JP2016083394 W JP 2016083394W WO 2017090447 A1 WO2017090447 A1 WO 2017090447A1
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WO
WIPO (PCT)
Prior art keywords
partial cylinder
sheet
protective member
opening
partial
Prior art date
Application number
PCT/JP2016/083394
Other languages
French (fr)
Japanese (ja)
Inventor
芳正 水野
泰行 山本
敦 村田
喜継 須崎
裕貴 一浦
彰浩 西尾
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2017090447A1 publication Critical patent/WO2017090447A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs

Definitions

  • This invention relates to a protective member to be attached around a wire or the like.
  • Patent Document 1 discloses a protective member attached around a wire or the like.
  • the self-winding sleeve described in Patent Document 1 automatically winds around the longitudinal axis to define a tubular cavity and separates from each other under externally applied force. It is said that it can be extended.
  • a protective member is excellent in handleability after insertion of an electric wire because it can maintain a tubular shape (cylinder shape) when it is released from an external force after the electric wire or the like is inserted.
  • an object of the present invention is to provide a technique that facilitates insertion of an electric wire or the like while suppressing a decrease in handleability after the insertion of the electric wire in a protective member attached around the electric wire.
  • the protective member according to the first aspect is a protective member that is attached around the linear body, and is formed by bending the one end portion in the width direction of the sheet-like member. It is a part extending from the edge part of the cylinder part and the edge part of the first part cylinder part to the other side end part in the width direction of the sheet-like member, and an opening can be formed between the first part cylinder part in a natural state And an open / close piece formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part after the linear body is inserted into the first partial cylinder part.
  • the protective member according to the second aspect is the protective member according to the first aspect, and is formed by bending the first partial cylinder part to a half cylinder or more.
  • the protective member according to the third aspect is the protective member according to the second aspect, and the first partial cylindrical portion is formed by being bent into three quarters or more.
  • the protection member according to a fourth aspect is the protection member according to any one of the first to third aspects, wherein the open / close piece is a flat plate or a radius of curvature of the first partial cylinder in a natural state. It is formed to be able to maintain a plate shape having a larger radius of curvature.
  • the protection member according to a fifth aspect is the protection member according to any one of the first to third aspects, wherein the opening / closing piece portion is configured such that the other end portion in the width direction of the sheet-like member is the first end portion.
  • An opening is formed between the second partial cylinder part formed by bending toward the first partial cylinder part with the same radius of curvature as the partial cylinder part, and the first partial cylinder part and the second partial cylinder part in a natural state.
  • a connecting portion that connects the first partial cylinder portion and the second partial cylinder portion in a formable manner.
  • the protection member according to the sixth aspect is the protection member according to the fifth aspect, and the second partial cylinder portion is formed by being bent into a half cylinder.
  • the protective member according to a seventh aspect is the protective member according to the fifth or sixth aspect, wherein the connecting portion is a flat plate or a radius of curvature larger than the radius of curvature of the first partial tube portion in a natural state. It is formed so that the plate shape which has can be maintained.
  • the protective member according to an eighth aspect is the protective member according to any one of the first to seventh aspects, and the sheet-like member is formed using a nonwoven fabric as a material.
  • the protection member according to the ninth aspect is the protection member according to any one of the first to eighth aspects, wherein the sheet-like member being heated along the extending direction is heated. By being passed through the mold, the shape in the natural state can be maintained.
  • the electric wire with a protective member according to a tenth aspect includes the protective member according to any one of the first to ninth aspects, and an electric wire to which the protective member is attached.
  • the method for producing a protective member according to the eleventh aspect is a method for producing a protective member in which a partial cylindrical portion is formed at least on one end side, and (a) a step of feeding a sheet-like member along the extending direction; (B) a step of heating the sheet-like member being sent, and (c) a step of passing the sheet-like member being sent through a mold.
  • the protective member is formed by bending the one end portion in the width direction of the sheet-like member, and the edge of the first partial cylinder portion of the sheet-like member.
  • 1st partial cylinder part which is a part over the width direction other side edge part, Comprising: It extends so that opening can be formed between 1st partial cylinder parts in a natural state, and after inserting a linear body into a 1st partial cylinder part And an opening / closing piece formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side. For this reason, an electric wire etc. can be easily inserted in a 1st partial cylinder part through opening in a natural state. Moreover, since the 1st partial cylinder part is maintaining the partial cylinder shape after electric wire insertion, the fall of the handleability after electric wire insertion is suppressed.
  • the first partial tube portion is formed to be bent to a half tube or more, the insertion property of the electric wire is reduced as compared with the case where the first partial tube portion is bent to less than the half tube. While suppressing, the handleability after electric wire insertion can be improved.
  • the electric wire is compared with the case where the first partial cylinder portion is bent to less than three quarters.
  • the handleability after insertion can be improved.
  • the opening / closing piece portion is formed so as to be able to maintain a flat plate shape or a plate shape having a radius of curvature larger than the curvature radius of the first partial cylinder portion in a natural state. Even if some external force is applied, it is difficult to deform so as to close the opening of the first partial cylinder portion. Thereby, it leads to the improvement of insertability, such as an electric wire.
  • the opening / closing piece portion is formed by bending the other end portion in the width direction of the sheet-like member toward the first partial cylinder portion side with the same curvature radius as that of the first partial cylinder portion. Since the cylindrical portion is included, it is possible to suppress the other end portion of the protective member from being turned up. At this time, since the open / close piece includes a connecting portion that connects the first partial cylinder and the second partial cylinder so that an opening can be formed between the first partial cylinder and the second partial cylinder in a natural state, It is possible to suppress a decrease in the insertability of the electric wire.
  • the second partial cylinder is formed by being bent into a half cylinder
  • the second partial cylinder is attached to the periphery of the linear body outside the first partial cylinder.
  • it leads to the improvement of the handleability after electric wire insertion.
  • it can attach without expanding a 2nd partial cylinder part. Thereby, it leads to the improvement of the attachment property of a protection member.
  • the connecting portion is formed so as to be able to maintain a flat plate shape or a plate shape having a radius of curvature larger than the radius of curvature of the first partial cylinder portion in a natural state. Even when an external force is applied, it is difficult to deform so as to close the opening of the first partial cylinder portion. Thereby, it leads to the improvement of insertability, such as an electric wire.
  • the protective member can be easily manufactured from the sheet-like member.
  • the sheet-shaped member being sent along the extending direction is passed through the mold in a heated state, so that the shape in the natural state can be maintained. Therefore, the protective member can be continuously manufactured from the sheet-like member.
  • a step of sending the sheet-like member along the extending direction (b) a step of heating the sheet-like member being sent, and (c) a step of being sent
  • the sheet-like member is passed through a mold, so that the protective member can be continuously produced from the sheet-like member.
  • FIG. 1 is a side view showing a protection member 20 according to the first embodiment.
  • FIG. 2 is a perspective view showing the electric wire 10 with a protective member according to the first embodiment.
  • Drawing 3 is a side view showing electric wire 10 with a protection member concerning a 1st embodiment.
  • Drawing 4 is a top view showing electric wire 10 with a protection member concerning a 1st embodiment.
  • the protective member 20 is attached around the linear body for the purpose of protection or the like.
  • the electric wire 12 is assumed as a linear body. That is, here, the protective member 20 is attached around the electric wire 12 to form the electric wire 10 with a protective member.
  • the protection member 20 is armored in the middle part of the longitudinal direction.
  • the electric wire 12 is configured such that a covering portion is formed by extrusion coating of resin on the outer periphery of the core wire.
  • An optical fiber or the like may be disposed along the electric wire 12 in the electric wire bundle 12a.
  • the electric wire 12 is used to electrically connect various electric devices mounted on a vehicle or the like in a state where the electric wire 12 is arranged at a location to be arranged on the vehicle or the like. 2 to 5 and 9 to 11, the outline of the wire bundle 12a is depicted.
  • the protective member 20 is formed by bending a sheet-like member 40 (see FIG. 6).
  • the sheet-like member 40 will be described as a non-woven fabric, but this is not essential.
  • the sheet-like member 40 may be other than a nonwoven fabric such as a woven fabric or a resin molded product in which a plurality of strands are woven.
  • the nonwoven fabric includes, for example, intertwined basic fibers and an adhesive resin called a binder.
  • the adhesive resin is a thermoplastic resin having a melting point lower than the melting point of the basic fiber (for example, a melting point of about 110 [° C.] to about 150 [° C.]).
  • Such a nonwoven fabric is heated to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, so that the adhesive resin melts and melts into the gaps of the basic fibers.
  • the adhesive resin is cured in a state in which the basic fibers existing around are bonded.
  • a nonwoven fabric becomes harder than the state before a heating, and is shape
  • the adhesive resin is, for example, granular resin or fibrous resin. It is also conceivable that the adhesive resin is formed so as to cover the periphery of the core fiber.
  • the fiber having a structure in which the core fiber is coated with the adhesive resin is referred to as a binder fiber.
  • the material of the core fiber for example, the same material as the basic fiber is adopted.
  • the basic fiber only needs to maintain the fiber state at the melting point of the adhesive resin, and various fibers can be employed in addition to the resin fiber.
  • the adhesive resin for example, a thermoplastic resin fiber having a melting point lower than that of the basic fiber is employed.
  • the basic fiber constituting the nonwoven fabric and the adhesive resin for example, a resin fiber mainly composed of PET (polyethylene terephthalate) is adopted as a basic fiber, and a copolymer resin of PET and PEI (polyethylene isophthalate) is bonded. It may be adopted as a resin.
  • the melting point of the basic fiber is approximately 250 [° C.]
  • the melting point of the adhesive resin is a temperature between about 110 [° C.] and about 150 [° C.].
  • the protection member 20 includes a first partial cylinder portion 22 and an opening / closing piece portion 30. There is a gap between the first partial cylinder portion 22 and the opening / closing piece 30, and the wire bundle 12 a can be inserted into the first partial cylinder portion 22 through the gap. Moreover, after inserting the wire bundle 12a in the 1st partial cylinder part 22, the opening-and-closing piece part 30 can be closed so that the said clearance gap may be plugged up. With the wire bundle 12a inserted into the first partial tube portion 22, the opening / closing piece 30 is closed, so that the protection member 20 is attached to the wire bundle 12a.
  • the first partial cylinder portion 22 is formed by bending the width direction one end portion 41 of the sheet-like member 40. More specifically, the first partial cylinder portion 22 is formed by rounding a portion from the width direction one side end portion 41 to the intermediate portion of the sheet-like member 40. As described above, the first partial cylinder portion 22 is a portion into which the wire bundle 12a is first inserted when the protection member 20 is attached to the wire bundle 12a.
  • the first partial cylinder portion 22 is formed in a cylindrical shape (here, a semi-cylindrical shape) opened in the circumferential direction.
  • the first partial cylinder portion 22 may be formed smaller than the half cylinder (for example, a third cylinder).
  • the wire bundle 12a is in a state after the wire bundle 12a is inserted into the first partial cylinder portion 22 and before the opening / closing piece 30 is closed.
  • the inner diameter of the first partial cylinder portion 22 is set to be substantially the same as the outer diameter of the wire bundle 12a. But the internal diameter of the 1st partial cylinder part 22 should just be set suitably. However, if the inner diameter of the first partial cylinder portion 22 is set to be equal to or less than the outer diameter of the wire bundle 12a, the opening / closing piece portion 30 is inserted after the wire bundle 12a is inserted into the first partial cylinder portion 22. In the state before closing the wire bundle 12a, it becomes difficult for the wire bundle 12a to come off from the first partial cylinder portion 22, and the operation of closing the open / close piece 30 is facilitated.
  • the opening / closing piece 30 is a portion extending from the edge of the first partial cylinder 22 to the other end 42 in the width direction of the sheet-like member 40.
  • the opening / closing piece 30 extends so that an opening is formed between the opening / closing piece 30 and the first partial cylinder 22 in a natural state. More specifically, as described above, the first partial cylinder portion 22 is provided in a semi-cylindrical shape, and the opening / closing piece 30 and the first partial cylinder portion 22 are provided so as to be spaced apart in a natural state. Thus, the opened portion of the first partial cylinder portion 22 is exposed to the outside.
  • the opening / closing piece 30 is formed so as to extend from the one side edge of the first partial cylinder 22 in the tangential direction of the edge.
  • the opening / closing piece 30 is formed so as to be able to maintain a flat plate shape in a natural state.
  • the protection member 20 is formed in a substantially J shape in a side view.
  • the opening / closing piece 30 may be formed so as to extend inward or outward from the tangential direction.
  • the natural state is a state in which no intentional external force is applied by an operator or the like.
  • the opening / closing piece 30 can be bent by its own weight (gravity) and block the opening even in a natural state.
  • the protection member 20 is held in a state where the opening is directed downward in the vertical direction, the opening / closing piece 30 is suppressed from being blocked by the natural state.
  • the opening / closing piece 30 is rigid enough not to block the opening within a range that can be bent to close the opening later. It is preferable that it is formed to have.
  • the gap between the opening / closing piece part 30 and the first partial cylinder part 22 becomes a handle. That is, even when the dimension of the gap between the opening / closing piece 30 and the first partial cylinder 22 is smaller than the outer diameter of the wire bundle 12a, the operator can easily widen the gap. In this case, for example, the opening / closing piece 30 may be bent, or the first partial cylinder 22 may be bent. Moreover, if the dimension of the clearance gap between the opening-and-closing piece part 30 and the 1st partial cylinder part 22 is more than the outer diameter of the electric wire bundle 12a, the operator can insert the electric wire bundle 12a as it is from the said clearance gap.
  • the opening of the 1st partial cylinder part 22 is smaller than the wire bundle 12a, it is good to space apart the opening-and-closing piece part 30 and the 1st partial cylinder part 22 so that opening may be expanded similarly to expanding the said clearance gap.
  • the wire bundle 12a is directed inward of the opening / closing piece portion 30.
  • the wire bundle 12a can be inserted into the first partial cylinder portion 22 without widening the gap and the opening by being inserted so as to slide along the surface. Thereby, the operation
  • the opening / closing piece 30 is formed to be bendable so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part 22 after the wire bundle 12 a is inserted into the first partial cylinder part 22.
  • the open / close piece 30 is closed after the wire bundle 12a is inserted into the first partial tube portion 22.
  • the front end of the opening / closing piece 30, that is, the other end 42 in the width direction of the sheet-like member 40 overlaps the outside of the first partial cylindrical portion 22.
  • the edge of the widthwise other side end 42 of the sheet-like member 40 is exposed to the outside, and the edge of the widthwise one side end 41 is External exposure is suppressed.
  • the opening / closing piece 30 is opened, and the wire bundle 12a can be taken out from the first partial tube portion 22.
  • the first partial cylinder portion 22 is formed so as to have at least rigidity sufficient to maintain its outer shape.
  • the opening / closing piece 30 is formed to have lower rigidity than the first partial cylinder 22.
  • the opening / closing piece 30 is easier to bend than the first partial cylinder 22, so that the opening / closing piece 30 can be easily opened and closed with respect to the first partial cylinder 22.
  • the opening / closing piece 30 can be formed to be deformable by adjusting the type or amount of the binder fiber of the nonwoven fabric or the amount of heat applied when forming the protective member 20 from the nonwoven fabric.
  • the opening / closing piece portion 30 is in a range of a quarter turn or more and a quarter turn or less in the circumferential direction of the first partial cylinder portion 22 in a state where the protection member 20 is attached to the wire bundle 12a ( Here, they are overlapped by one quarter).
  • the overlapping range of the opening / closing piece 30 may be less than a quarter of the circumference in the circumferential direction of the first partial cylinder 22 or may be a range of more than three quarters.
  • the wire bundle 12 a protrudes between the open / close piece 30 and the first partial cylinder portion 22.
  • the opening / closing piece 30 overlaps within a range of three quarters or less in the circumferential direction of the first partial cylinder portion 22, so that the opening / closing piece portion 30 is inserted after the wire bundle 12 a is inserted into the first partial cylinder portion 22. It can suppress that the operation
  • the protection member 20 is formed so that the inner peripheral side portion is harder than the outer peripheral side portion.
  • the amount of the binder fiber on the inner peripheral surface side of the non-woven fabric melts the binder fiber on the outer peripheral surface side. It is conceivable to make it more than the amount. More specifically, a nonwoven fabric having binder fibers as described above generally has a property of becoming harder as the amount of binder fibers that are once melted and then cooled and hardened is larger.
  • the binder blended in the nonwoven fabric at the stage before melting as follows, for example A method for adjusting the amount of the fiber, a method for lowering the melting point of the binder fiber, and a method for adjusting the amount of the binder fiber to be melted are considered. Note that only one of the three methods may be performed, or a plurality of the methods may be used in combination. When a plurality are used in combination, the inner peripheral side portion of the protective member 20 can be made harder than the outer peripheral side portion.
  • the amount of the binder fiber in the nonwoven fabric should be blended in a large amount on the inner circumferential surface and less in the outer circumferential surface.
  • the amount of the binder fiber is changed in this way, for example, the amount of the binder fiber mixed in one nonwoven fabric is continuously increased from one main surface side to the other main surface side so that the blending amount increases on the inner peripheral surface side.
  • the distribution of the binder fibers in one nonwoven fabric is uniform, but a plurality of nonwoven fabrics with different blending amounts are overlapped in the thickness direction so that the nonwoven fabric with a large blending amount is on the inner peripheral surface side. Is also possible.
  • the type of the binder fiber may be changed. More specifically, when the binder fiber is melted, the lower the melting point, the easier it is to melt, and the rate of melting at the same heating temperature and heating time increases more reliably. Utilizing this, the inner part of the nonwoven fabric is the protective member 20 cooled after the heat treatment by using the nonwoven fabric having a lower melting point than the outer part of the binder fiber. It becomes hard.
  • the amount of heat applied may be adjusted by adjusting the temperature of the heat treatment, the distance to the heat source, the time, or the like. More specifically, when the heat treatment is performed, the side that becomes the inner peripheral surface is processed at a high temperature and the side that becomes the outer peripheral surface is processed at a low temperature, and the side that becomes the inner peripheral surface is processed at a position close to the heat source and the outer peripheral surface.
  • the binder on the inner peripheral surface side can be made larger than the amount of binder fiber melting on the outer peripheral surface side. Thereby, the inner peripheral side becomes harder than the outer peripheral side in the protective member 20 cooled after the heat treatment.
  • the part which is in contact with the linear body among the protective members 20, or is facing is an outer peripheral side.
  • the portion located on the outer peripheral side of the portion where the first partial cylinder portion 22 and the opening / closing piece portion 30 are overlapped is used as the sheet-like member 40.
  • the inner peripheral portion is formed so as to be harder than the outer peripheral portion.
  • the sheet-shaped nonwoven fabric is collectively treated as the protective member 20 here, the protective member 20 as a whole is harder on the inner peripheral side than on the outer peripheral side. It is formed to become.
  • the sheet-like nonwoven fabric is bent.
  • the protective member 20 is formed, the sheet-like nonwoven fabric is easily bent and is easily maintained in a bent state.
  • the one main surface side of the portion formed in the first partial cylinder portion 22 is set so that the thermal contraction rate is larger than that of the other main surface side.
  • a fiber having a high melting point is blended on the outer peripheral side and a fiber having a low melting point is blended on the inner peripheral side, and then heated at a temperature lower than the melting point of the fiber having a high melting point.
  • the inner peripheral side can be easily contracted by heat.
  • Drawing 5 is an explanatory view showing signs that protection member 20 concerning an embodiment is attached to electric wire bundle 12a.
  • the wire bundle 12a can be easily inserted into the first partial cylinder portion 22.
  • the first partial cylindrical portion 22 is formed in a semi-cylindrical shape having an inner diameter substantially the same as the outer diameter of the wire bundle 12a, and the opening / closing piece 30 is tangentially extending from the first partial cylindrical portion 22. Since it is formed so as to extend, the distance between the first partial cylinder part 22 and the opening / closing piece part 30 (the distance between the edge part on the free end side of the first partial cylinder part 22 and the opening / closing piece part 30) is also included.
  • the outer diameter of the wire bundle 12a is substantially the same.
  • all the electric wires 12 accommodated in the first partial cylinder part 22 can be guided to the opening of the first partial cylinder part 22 at a time without opening the opening / closing piece 30 and the first partial cylinder part 22. Furthermore, the wire bundle 12 a guided to the opening of the first partial cylinder part 22 can be inserted into the first partial cylinder part 22 without opening the first partial cylinder part 22.
  • interval between the 1st partial cylinder part 22 and the opening-and-closing piece part 30 is set to the dimension smaller than the outer diameter of the wire bundle 12a, you may divide the electric wire 12 and insert in order. Then, after opening the opening / closing piece 30 or the first partial cylinder part 22 and setting the interval between the first partial cylinder part 22 and the opening / closing piece part 30 to be equal to or larger than the outer diameter of the electric wire bundle 12a, the electric wire bundle 12a is moved at a time. It may be inserted.
  • the opening / closing piece 30 is easy to open because the interval between the first partial cylinder portion 22 and the opening / closing piece 30 becomes a handle.
  • the opening / closing piece part 30 is closed and the tip of the opening / closing piece part 30 is overlapped with the first partial cylinder part 22. Thereby, the opening used for insertion of the electric wire bundle 12a is closed, and the protection member 20 is in a state attached to the electric wire bundle 12a.
  • a binding member such as a tape 90 is wound around the protective member 20 so that the closed state of the opening / closing piece 30 can be maintained.
  • the tape 90 is wound around the longitudinal end portion of the protection member 20 and the wire bundle 12a so that the protection member 20 is positioned with respect to the wire bundle 12a.
  • the tape 90 or the like may be wound around the intermediate portion in the longitudinal direction of the protection member 20. Thereby, the opening of the protection member 20 is more reliably suppressed.
  • the wire bundle 12a may be in contact with the protection member 20 in the entire circumferential direction, and a gap is provided between the wire bundle 12a and the protection member 20. It may be.
  • Drawing 6 is an explanatory view showing an example of a manufacturing method of protection member 20 concerning an embodiment.
  • a method of manufacturing the protective member 20 using the protective member manufacturing apparatus 50 will be described.
  • the protective member manufacturing apparatus 50 includes an upstream sheet conveying mechanism 60, a heating unit 70, and a forming unit 80. Moreover, the protective member manufacturing apparatus 50 may include a cooling fan 54 as necessary.
  • the molding part 80 is supported by the base 52.
  • the heating unit 70 is directly supported by the base 52, and that the forming unit 80 is supported by the base 52 via the heating 70.
  • the upstream sheet conveyance mechanism 60 is a mechanism that conveys the sheet-like member 40 (here, sheet-like nonwoven fabric) containing a thermoplastic resin along a predetermined path.
  • the path along which the sheet-like member 40 is transported is referred to as a transport path R1.
  • the heating unit 70 and the molding unit 80 are disposed at positions along the transport path R1.
  • the upstream sheet transport mechanism 60 is disposed at a position upstream of the position of the heating unit 70 in the transport path R1.
  • the upstream sheet conveying mechanism 60 feeds the sheet-like member 40 to the position of the heating unit 70.
  • the upstream sheet conveying mechanism 60 includes a pair of feeding rollers 62 and a feeding roller driving unit 64.
  • the pair of feed rollers 62 are members that rotate with the flat sheet-like member 40 interposed therebetween at a position upstream of the position of the heating unit 70 in the transport path R1.
  • the upstream sheet conveyance mechanism 60 includes two pairs of feeding rollers 62 arranged side by side in the direction of the conveyance path R1.
  • the feeding roller driving unit 64 is a driving mechanism that rotates the pair of feeding rollers 62.
  • the feed roller driving unit 64 includes a motor and a gear mechanism that transmits the rotational force of the motor to the pair of feed rollers 62.
  • the feed roller drive unit 64 rotates both the pair of feed rollers 62 in the opposite direction, and the feed roller drive unit 64 rotates only one of the pair of feed rollers 62.
  • one of the pair of feeding rollers 62 conveys the sheet-like member 40 toward the heating unit 70 (downstream side), and the other of the pair of feeding rollers 62 is in contact with the moving sheet-like member 40 and is driven.
  • the pair of feeding rollers 62 are formed in a columnar shape or a cylindrical shape, for example.
  • the outer peripheral surface of each of the pair of feeding rollers 62 is preferably made of a material having high frictional resistance against the sheet-like member 40.
  • the outer peripheral surface of each of the pair of feeding rollers 62 is made of a rubber-based material such as an elastomer.
  • the heating unit 70 is a device that heats the sheet-like member 40 that is moving along the transport path R1.
  • the heating unit 70 is a device that heats the sheet-like member 40 in a non-contact manner, such as a hot air blower or an infrared heater.
  • the heating unit 70 softens the sheet-like member 40 to such an extent that it can be plastically deformed by heating the sheet-like member 40 containing the thermoplastic resin. That is, when the sheet-like member 40 heated by the heating unit 70 is cooled after being deformed by an external force, it maintains the shape during cooling.
  • the heating part 70 is heating the sheet-like member 40 whole along the width direction here.
  • a portion of the sheet-like member 40 that is not bent when being molded into the protection member 20 also has rigidity higher than that of the sheet-like member 40. Molded.
  • the heating unit 70 may heat only a portion that is bent from the sheet-like member 40 (here, a portion that is formed on the first partial tube portion 22).
  • the molded opening / closing piece 30 has a rigidity equal to or slightly larger than the rigidity of the sheet-like member 40.
  • the forming unit 80 is disposed at a position downstream of the position of the heating unit 70 in the transport path R1.
  • the molding unit 80 includes a mold 82.
  • FIG. 7 is a view of the mold 82 as viewed from the upstream side.
  • FIG. 8 is a view of the mold 82 as seen from the downstream side.
  • the mold 82 has a molding surface 84 for molding the heated sheet-like member 40 into the shape of the protective member 20.
  • the inner peripheral surface of the through-hole 82h opened so as to penetrate the surface facing the upstream side and the surface facing the downstream side of the main body 82a of the mold 82 forms the molding surface 84.
  • the main body portion 82a of the mold 82 is formed so as to be inclined on the surface facing the upstream side in such a manner that the lower surface side protrudes more upstream than the upper surface side.
  • the upstream side of the through hole 82h is formed in a groove shape whose upper side is open, and the downstream side of the through hole 82h is formed in a closed ring shape.
  • the molding surface 84 has an outer molding surface 85 and an inner molding surface 86.
  • Outer molding surface 85 supports the main surface on the side that becomes the outer peripheral side surface when sheet-shaped member 40 is molded into protective member 20 out of both main surfaces of sheet-shaped member 40.
  • the portion of the outer molding surface 85 that molds the first partial cylindrical portion 22 gradually changes from a shape close to a flat surface to a shape close to an annular shape along the outer peripheral side as it goes from the upstream side to the downstream side of the transport path R1. It is formed in a shape.
  • molding surfaces 85 is formed in the substantially flat surface shape toward the downstream from the upstream except the inclination of the induction
  • the upstream end portion of the outer molding surface 85 of the mold 82 where the first partial cylindrical portion 22 is molded has a larger radius of curvature than the outer peripheral side surface of the first partial cylindrical portion 22.
  • the downstream end portion of the outer molding surface 85 of the mold 82 where the first partial cylindrical portion 22 is molded is formed with a radius of curvature equal to or smaller than the radius of curvature of the outer peripheral side surface. ing.
  • the outer molding surface 85 is formed in a shape in which the radius of curvature gradually decreases from the upstream end to the downstream end.
  • the inner molding surface 86 molds the main surface on the side that becomes the inner peripheral side surface when the sheet-like member 40 is molded into the protection member 20.
  • the inner molding surface 86 regulates the movement of the sheet-like nonwoven fabric bent by the outer molding surface 85.
  • the inner molding surface 86 is formed in a certain shape from the upstream side to the downstream side of the transport path R1.
  • the mold 82 gradually deforms the sheet-like member 40 sliding on the outer molding surface 85 from a shape close to flat to a shape close to the shape of the molded product. Thereby, the heated sheet-like member 40 can pass through the mold 82 smoothly.
  • a space between the outer molding surface 85 and the inner molding surface 86 on the downstream side of the mold 82 forms a molding passage 88 that restrains the sheet-like member 40 to the shape of the protection member 20.
  • a space between the outer molding surface 85 and the inner molding surface 86 on the side guides the sheet-like member 40 to the molding passage 88 (that is, the sheet-like member 40 gradually approaches the shape of the protection member 20).
  • the part formed in the groove shape on the upstream side of the through hole 82h is the guide passage 87
  • the part formed in the closed ring shape on the downstream side is the forming passage 88.
  • the portion constituting the guide passage 87 of the mold 82 is not heated by a heat source such as a heater, that is, when the temperature of the portion constituting the guide passage 87 of the die 82 is lower than the temperature of the heated sheet-like member 40.
  • the sheet-like member 40 is cooled by contacting the inner peripheral surface of the guide passage 87.
  • the sheet-like member 40 is cured before reaching the forming passage 88, the sheet-like member 40 cannot be formed into a desired shape.
  • the portion of the mold 82 that constitutes the guide passage 87 is made of a material that has a smaller heat transfer coefficient between the sheet-like member 40 and air than the material of the portion of the die 82 that constitutes the molding passage 88. It can be considered. It is also conceivable that the portion of the mold 82 constituting the guide passage 87 is maintained at a predetermined temperature by a heating means such as a heater (not shown) or a hot air blower.
  • the heated sheet-like member 40 passes through the molding passage 88 while both main surfaces thereof are in contact with the outer molding surface 85 and the inner molding surface 86, respectively. Accordingly, the portion of the sheet-like member 40 that passes through the molding passage 88 has the same shape as the molding passage 88, that is, the shape of the protective member 20 after molding.
  • the portion of the mold 82 that constitutes the molding passage 88 is maintained at a temperature lower than the temperature of the sheet-like member 40 immediately before entering the molding passage 88 by natural heat dissipation or forced cooling. Therefore, the portion of the mold 82 that constitutes the forming passage 88 cools the sheet-like member 40 by heat exchange with the sheet-like member 40.
  • the portion of the sheet-like member 40 that passes through the forming passage 88 at the one end 41 in the width direction is cooled while being constrained in a semicircular arc shape, and is cured while being bent in a semicircular arc shape. That is, the portion of the sheet-like member 40 that passes through the forming passage 88 is formed in a semicircular arc shape. Accordingly, the portion of the sheet-like member 40 that is moving in the width direction one side end portion 41 on the downstream side of the conveyance path R1 from the position of the forming portion 80 is formed in a semi-cylindrical shape.
  • the portion formed into the semi-cylindrical shape is the first partial cylindrical portion 22 of the protection member 20.
  • the portion of the mold 82 constituting the molding passage 88 is made of a material having a high heat transfer coefficient between the sheet-like member 40 and air.
  • the mold 82 is a metal member such as stainless steel, iron, or copper.
  • heat radiation fins are formed on the surface of the mold 82 other than the inner surface of the portion constituting the molding passage 88.
  • the portion of the mold 82 that constitutes the molding passage 88 is forcibly air-cooled by the cooling fan 54.
  • the following is performed.
  • the sheet-like member 40 is conveyed by the upstream sheet conveying mechanism 60. Specifically, a portion of the sheet-like member 40 that is formed on the first partial cylinder portion 22 is disposed on the left side when viewed from the upstream direction, and a portion that is molded on the opening / closing piece portion 30 is disposed on the right side when viewed from the upstream side. Deploy. Furthermore, the one side main surface having a large heat shrinkage ratio among the portions formed in the first partial cylindrical portion 22 is located on the side not in contact with the upper surface of the base 52, and the other one having a small heat shrinkage ratio among the sheet-like members 40. The side main surface is conveyed in contact with the upper surface of the base 52.
  • the sheet-like member 40 containing the thermoplastic resin that is moving along the conveyance path R1 is heated by the heating unit 70 of the protective member manufacturing apparatus 50.
  • the thermal contraction rate of the one-side main surface of the sheet-like member 40 (the main surface not in contact with the upper surface of the base 52) is set to be larger than the thermal contraction rate of the other-side main surface of the sheet-like member 40. Therefore, the heated sheet-like member 40 tends to shrink with the one-side main surface as the inner side.
  • the sheet-like member 40 heated by the heating unit 70 is gradually deformed from a shape close to flat to a shape close to the shape of the forming passage 88. More specifically, the sheet-like member 40 is deformed by sliding the sheet-like member 40 conveyed along the conveyance path R ⁇ b> 1 on the outer molding surface 85 of the guide passage 87.
  • molding is performed using the molding passage 88 disposed at a position downstream of the positions of the heating unit 70 and the guide passage 87 in the transport path R1.
  • the portion of the sheet-like member 40 passing through the molding passage 88 is cooled while being constrained to the shape of the molded product.
  • the sheet-like member 40 is cooled by heat exchange with the mold 82 when passing through the molding passage 88 and is cured in the same shape as the molding passage 88. Therefore, the portion of the sheet-like member 40 being conveyed, which is downstream of the conveyance path R1 from the position of the forming passage 88, serves as the protection member 20.
  • the series of protective members 20 manufactured using the protective member manufacturing apparatus 50 as described above are cut into a necessary length as a single unit of the protective member 20 and used. That is, the protection member manufacturing apparatus 50 can continuously manufacture the protection members 20 for a plurality of units.
  • the sheet-like member 40 may be formed on the protective member 20 for each unit.
  • the protective member 20 is manufactured using the protective member manufacturing apparatus 50, and the protective member 20 may be manufactured manually by an operator, or by another apparatus or the like. .
  • the first partial cylinder part 22 formed by bending the width direction one end 41 of the sheet-like member 40, and the sheet form from the edge of the first partial cylinder part 22.
  • the portion extending across the width direction other side end portion 42 of the member 40 extends in a natural state so that an opening can be formed between the first partial cylinder portion 22, and a linear body is inserted into the first partial cylinder portion 22.
  • the opening / closing piece 30 is formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part 22 later. For this reason, an electric wire etc. can be easily inserted in the 1st partial cylinder part 22 through opening in a natural state.
  • the 1st partial cylinder part 22 is maintaining the partial cylinder shape after electric wire insertion, the fall of the handleability after electric wire insertion is suppressed.
  • the 1st partial cylinder part 22 is bent and formed in a half cylinder, compared with the case where the 1st partial cylinder part 22 is bent to less than a half cylinder, it suppresses the fall of the insertion property of an electric wire, and after electric wire insertion Can be improved.
  • the opening / closing piece 30 is formed so as to be able to maintain a flat plate shape in a natural state, even if a slight external force is applied to the opening / closing piece 30, the opening / closing piece 30 is deformed so as to close the opening of the first partial cylinder portion 22. It becomes difficult. Thereby, it leads to the improvement of insertability, such as an electric wire.
  • the sheet-like member 40 is formed using a nonwoven fabric as a material, the protective member 20 can be easily manufactured from the sheet-like member 40.
  • the sheet-like member 40 being sent along the extending direction is passed through the mold 82 in a heated state, the sheet-like member is formed so as to be able to maintain the shape in the natural state.
  • the protective member 20 can be continuously manufactured from 40.
  • the inner peripheral portion is formed so as to be harder than the outer peripheral portion, the electric wire 12 is reliably protected by the inner peripheral portion of the protection member 20.
  • the outer peripheral portion is softer than the inner peripheral portion, it is possible to suppress the generation of sound when the protective member 20 interferes with surrounding members.
  • the part located in the inner peripheral side in the rolled state among the 1st partial cylinder parts 22 of the sheet-like member 40 is set so that a thermal contraction rate may become large compared with the part located in the outer peripheral side. Therefore, the sheet-like member 40 is easily rounded by applying heat to the sheet-like member 40. Thereby, it becomes easy to form the protection member 20 from the sheet-like member 40.
  • the opening / closing piece part 30 overlaps in the circumferential direction of the 1st partial cylinder part 22 in the range of 1/4 turn or more and 3/4 turn or less, the workability
  • the protrusion of the electric wire 12 can be more reliably suppressed while suppressing the above.
  • FIG. 9 is a side view showing a protective member 20A according to the second embodiment and a protective member-equipped electric wire 10A including the same.
  • the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the opening / closing piece 30A is bent toward the first partial cylindrical portion 22 side.
  • the opening / closing piece 30A is formed so as to be able to maintain a plate shape having a radius of curvature larger than the radius of curvature of the first partial cylinder portion 22 in a natural state.
  • the opening / closing piece 30A is formed such that the radius of curvature gradually increases as it goes to the tip from the connecting portion with the first partial cylinder portion 22.
  • the opening / closing piece portion may be formed with a constant radius of curvature from the connecting portion with the first partial cylinder portion 22 to the tip.
  • Such a protective member 20A can also be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82. Specifically, the upstream end portion of the portion that molds the opening / closing piece 30A in the outer molding surface of the mold is formed to have a larger radius of curvature than the outer peripheral side surface of the opening / closing piece 30A. On the other hand, the downstream end portion of the outer molding surface of the mold in which the opening / closing piece portion 30A is formed is formed to have a curvature radius equal to or smaller than the curvature radius of the outer peripheral side surface of the opening / closing piece portion 30A. Is done.
  • the outer molding surface is formed in a shape in which the radius of curvature gradually decreases from the upstream end to the downstream end. Further, the inner molding surface of the mold is uniformly formed in the same shape as the inner peripheral side surface of the protective member 20A from the upstream end to the downstream end.
  • the protective member 20A can be manufactured using the protective member manufacturing apparatus 50 by changing the shape of the mold 82.
  • the opening / closing piece 30A is bent toward the first partial cylindrical portion 22, the outer shape of the protective member 20A can be reduced when the protective member 20A exists as a single body.
  • the opening / closing piece 30A is bent toward the first partial cylinder portion 22, when the protective member 20A is attached to the wire bundle 12a, the tip of the opening / closing piece 30A is difficult to turn.
  • FIG. 10 is a side view showing a protective member 20B according to the third embodiment and a protective member-equipped electric wire 10B having the same.
  • the same components as those described in the previous embodiments are denoted by the same reference numerals, and the description thereof is omitted.
  • Protective member 20B according to the third embodiment is different from the shape of first partial cylindrical portion 22 of protective member 20 according to the first embodiment in the shape of first partial cylindrical portion 22B.
  • the first partial cylinder portion 22B is formed in a three-quarter cylindrical shape. Thereby, after inserting the wire bundle 12a into the first partial tube portion 22B, when the wire bundle 12a is about to come out of the first partial tube portion 22B, the wire bundle 12a is an edge of the first partial tube portion 22B. It becomes difficult to get caught in the part.
  • the opening / closing piece 30 is formed so as to extend from the one side edge of the first partial cylinder 22B in the tangential direction at the edge, but extends inward or outward from the tangential direction. It may be formed.
  • the open / close piece 30B is arranged on the outside of the first partial cylinder part 22B as in the first embodiment.
  • the dimension of the opening / closing piece 30B in the width direction of the sheet-like member 40 may be shorter than the dimension of the opening / closing piece 30.
  • Such a protective member 20B can be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82.
  • the downstream end of the portion forming the first partial cylinder portion 22B in the outer molding surface of the mold is formed in a three-quarter arc shape, and the downstream end from the upstream end is formed.
  • the curvature radius gradually decreases toward the end portion.
  • the first partial cylinder part 22 side is left as it is, and a part of the open / close piece 30 that forms the part connected to the first partial cylinder part 22 is a quarter. It may be formed in an arc shape. From these, the protection member 20 can be manufactured using the protection member manufacturing apparatus 50 by changing the shape of the mold 82.
  • the protection member 20B according to the third embodiment since the first partial cylinder portion 22B is formed by being bent into three or more quarters, the first partial cylinder 22B is bent to less than three quarters. Compared with the case, the handleability after inserting the electric wire can be improved.
  • FIG. 11 is a side view which shows 20 C of protection members which concern on 4th Embodiment, and 10C of electric wires with a protection member provided with this.
  • the same components as those described in the previous embodiments are denoted by the same reference numerals, and the description thereof is omitted.
  • Protective member 20C according to the fourth embodiment is different in the shape of opening / closing piece 30C from the shape of opening / closing piece 30 of protection member 20 according to the first embodiment.
  • the opening / closing piece portion 30 ⁇ / b> C includes a second partial cylinder portion 32 and a connecting portion 36.
  • the second partial cylindrical portion 32 is formed by bending the widthwise other side end portion 42 of the sheet-like member 40 toward the first partial cylindrical portion 22 side with the same radius of curvature as the first partial cylindrical portion 22. Since the 2nd partial cylinder part 32 is bent and formed in the 1st partial cylinder part 22 side, when attaching the protection member 20 to the wire bundle 12a, the 2nd partial cylinder part 32 becomes difficult to turn.
  • the 2nd partial cylinder part 32 is formed in the half cylinder (half cylinder) shape, it may be less than a half cylinder and may be larger than a half cylinder.
  • the 2nd partial cylinder part 32 is larger than a half cylinder, it is preferable that it is formed in the open ring shape. Since the second partial cylinder part 32 is formed in a half cylinder or more, after inserting the wire bundle 12a into the first partial cylinder part 22, the second partial cylinder part 32 is replaced with the electric wire bundle 12a and the first partial cylinder part. By covering the outer side of the second portion 22, the second partial cylinder portion 32 is less likely to come out of the wire bundle 12 a and the first partial cylinder portion 22.
  • the second partial cylinder part 32 is formed in a half cylinder or less, the second partial cylinder part 32 is provided when the second partial cylinder part 32 is placed outside the wire bundle 12a and the first partial cylinder part 22. Therefore, it is possible to prevent the ease of installation from being reduced. From these, the 2nd partial cylinder part 32 is formed in the half cylinder here.
  • the connecting portion 36 is a portion that connects the first partial cylindrical portion 22 and the second partial cylindrical portion 32 so that there is a gap between the first partial cylindrical portion 22 and the second partial cylindrical portion 32 in a natural state.
  • the connecting portion 36 is formed in a flat plate shape.
  • the connecting portion 36 is formed so as to extend in a tangential direction at one end edge portion of the first partial cylinder portion 22.
  • the connecting portion 36 is formed so as to extend in a tangential direction at one end edge portion of the second partial cylinder portion 32.
  • connection part 36 is the 1st partial cylinder part 22 and 2nd part in a natural state.
  • the distance between the cylinder portion 32 is set.
  • connection part may be formed so that it may extend inward or outward rather than the tangential direction in the edge part of the 1st partial cylinder part 22 or the 2nd partial cylinder part 32.
  • the connecting portion 36 is provided so as to be able to maintain a flat shape in a natural state. Thereby, even if some external force is applied to the protective member 20C in a natural state, the opening / closing piece 30C is unlikely to be deformed so as to close the opening of the first partial cylinder portion 22.
  • the connecting portion may be formed to be bent so as to have a larger radius of curvature than the first partial cylindrical portion 22 and may be formed so as to be able to maintain its shape in a natural state.
  • Such a protective member 20C can be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82.
  • the width direction other side end portion 42 of the sheet-like member 40 is formed in the opening / closing piece portion 30 without changing the first partial cylinder portion 22 side. It is conceivable that the portion is formed in the same shape as the portion that molds the first partial cylinder portion 22.
  • the protection member 20 ⁇ / b> C can be manufactured using the protection member manufacturing apparatus 50 by changing the shape of the mold 82.
  • the opening / closing piece 30 ⁇ / b> C has the other end 42 in the width direction of the sheet-like member 40 on the first partial cylinder 22 side with the same radius of curvature as the first partial cylinder 22. Since the second partial cylinder portion 32 formed by bending is included, it is possible to prevent the other end portion of the protection member 20C from being turned up. At this time, the connecting portion that connects the first partial cylinder part 22 and the second partial cylinder part 32 so that the opening / closing piece part 30C has a space between the first partial cylinder part 22 and the second partial cylinder part 32 in a natural state. Since the part 36 is included, the fall of the insertability of the electric wire 12 can be suppressed.
  • the 2nd partial cylinder part 32 is bent and formed in the half cylinder, when the 2nd partial cylinder part 32 is attached to the circumference
  • the partial cylinder portion 32 is difficult to come off from the linear body. Thereby, it leads to the improvement of the handleability after electric wire insertion.
  • the 2nd partial cylinder part 32 can be attached even if it does not spread. Thereby, it leads to the improvement of the attachment property of 20 C of protection members.
  • the connecting portion 36 is formed so as to be able to maintain a flat plate shape in a natural state, it is difficult to be deformed so as to close the opening of the first partial cylinder portion 22 even if a slight external force is applied to the opening / closing piece portion 30. . Thereby, it leads to the improvement of insertability, such as an electric wire.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

The purpose of the present invention is to provide a protective member to be attached to the periphery of an electric wire, wherein a decline in handling properties after insertion of the electric wire is reduced, while insertion of the electric wire or the like is made easy. This protective member is to be attached to the periphery of a linear body. The protective member is equipped with: a first-section cylindrical part formed by bending the end section of a sheet-shaped member on one side thereof in the widthwise direction; and an opening/closing piece that comprises the portion extending from the edge of the first-section cylindrical part to the end section of the sheet-shaped member on the other side thereof in the widthwise direction, extends in a manner such that the first-section cylindrical part opens in the peripheral direction in a natural state, and is formed so as to be capable of bending so as to overlap the inner-circumferential or outer-circumferential side of the first-section cylindrical part after inserting a linear body into the first-section cylindrical part.

Description

保護部材、保護部材付電線及び保護部材の製造方法Protective member, electric wire with protective member, and method of manufacturing protective member
　この発明は、電線等の周囲に取り付ける保護部材に関する。 This invention relates to a protective member to be attached around a wire or the like.
　電線等の周囲に取り付けられる保護部材が例えば、特許文献１に開示されている。 For example, Patent Document 1 discloses a protective member attached around a wire or the like.
　特許文献１に記載の自動巻き付きスリーブは、外部から加えられる力がないと、長手方向軸の周りに自動に巻き付いて管状の空洞を規定し、外部から加えられる力の下で互いから離れるように伸長可能であるとされる。このような保護部材は、電線等が挿入された後、外力から解放されると自身で管状（筒状）を維持可能であるため、電線挿入後の取扱性に優れる。 When there is no externally applied force, the self-winding sleeve described in Patent Document 1 automatically winds around the longitudinal axis to define a tubular cavity and separates from each other under externally applied force. It is said that it can be extended. Such a protective member is excellent in handleability after insertion of an electric wire because it can maintain a tubular shape (cylinder shape) when it is released from an external force after the electric wire or the like is inserted.
特表２００９－５３４０１１号公報Special table 2009-534011
　しかしながら、特許文献１に記載の自動巻き付きスリーブのように、外部から加えられる力がない状態で完全な管状をなすと、その内部に電線等を挿入しにくくなる。 However, as in the case of the self-winding sleeve described in Patent Document 1, if a complete tube is formed without any external force, it becomes difficult to insert an electric wire or the like into the inside.
　そこで、本発明は、電線の周囲に取り付けられる保護部材において、電線挿入後の取扱性の低下を抑制しつつ、電線等を挿入しやすくなる技術を提供することを目的とする。 Therefore, an object of the present invention is to provide a technique that facilitates insertion of an electric wire or the like while suppressing a decrease in handleability after the insertion of the electric wire in a protective member attached around the electric wire.
　上記課題を解決するため、第１の態様に係る保護部材は、線状体の周囲に取付けられる保護部材であって、シート状部材の幅方向一方側端部を曲げて形成された第１部分筒部と、前記第１部分筒部の縁部から前記シート状部材の幅方向他方側端部に亘る部分であって、自然状態で前記第１部分筒部との間で開口を形成可能に延び、前記第１部分筒部に線状体を挿入した後に前記第１部分筒部の内周側又は外周側に重なるように曲げ可能に形成された開閉片部と、を備える。 In order to solve the above-described problem, the protective member according to the first aspect is a protective member that is attached around the linear body, and is formed by bending the one end portion in the width direction of the sheet-like member. It is a part extending from the edge part of the cylinder part and the edge part of the first part cylinder part to the other side end part in the width direction of the sheet-like member, and an opening can be formed between the first part cylinder part in a natural state And an open / close piece formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part after the linear body is inserted into the first partial cylinder part.
　第２の態様に係る保護部材は、第１の態様に係る保護部材であって、前記第１部分筒部が半筒以上に曲げて形成されている。 The protective member according to the second aspect is the protective member according to the first aspect, and is formed by bending the first partial cylinder part to a half cylinder or more.
　第３の態様に係る保護部材は、第２の態様に係る保護部材であって、前記第１部分筒部が４分の３筒以上に曲げて形成されている。 The protective member according to the third aspect is the protective member according to the second aspect, and the first partial cylindrical portion is formed by being bent into three quarters or more.
　第４の態様に係る保護部材は、第１から第３のいずれか１つの態様に係る保護部材であって、前記開閉片部は、自然状態で平板状又は前記第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されている。 The protection member according to a fourth aspect is the protection member according to any one of the first to third aspects, wherein the open / close piece is a flat plate or a radius of curvature of the first partial cylinder in a natural state. It is formed to be able to maintain a plate shape having a larger radius of curvature.
　第５の態様に係る保護部材は、第１から第３のいずれか１つの態様に係る保護部材であって、前記開閉片部は、前記シート状部材の幅方向他方側端部を前記第１部分筒部と同じ曲率半径で前記第１部分筒部側に曲げて形成された第２部分筒部と、自然状態で前記第１部分筒部と前記第２部分筒部との間に開口が形成可能に前記第１部分筒部と前記第２部分筒部とをつなぐ連結部と、を含む。 The protection member according to a fifth aspect is the protection member according to any one of the first to third aspects, wherein the opening / closing piece portion is configured such that the other end portion in the width direction of the sheet-like member is the first end portion. An opening is formed between the second partial cylinder part formed by bending toward the first partial cylinder part with the same radius of curvature as the partial cylinder part, and the first partial cylinder part and the second partial cylinder part in a natural state. A connecting portion that connects the first partial cylinder portion and the second partial cylinder portion in a formable manner.
　第６の態様に係る保護部材は、第５の態様に係る保護部材であって、前記第２部分筒部は、半筒に曲げられて形成されている。 The protection member according to the sixth aspect is the protection member according to the fifth aspect, and the second partial cylinder portion is formed by being bent into a half cylinder.
　第７の態様に係る保護部材は、第５又は第６の態様に係る保護部材であって、前記連結部は、自然状態で平板状又は前記第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されている。 The protective member according to a seventh aspect is the protective member according to the fifth or sixth aspect, wherein the connecting portion is a flat plate or a radius of curvature larger than the radius of curvature of the first partial tube portion in a natural state. It is formed so that the plate shape which has can be maintained.
　第８の態様に係る保護部材は、第１から第７のいずれか１つの態様に係る保護部材であって、前記シート状部材は、不織布を材料として形成されている。 The protective member according to an eighth aspect is the protective member according to any one of the first to seventh aspects, and the sheet-like member is formed using a nonwoven fabric as a material.
　第９の態様に係る保護部材は、第１から第８のいずれか１つの態様に係る保護部材であって、延在方向に沿って送られている途中の前記シート状部材が加熱された状態で型に通されることで、自然状態の形状を維持可能に形成されている。 The protection member according to the ninth aspect is the protection member according to any one of the first to eighth aspects, wherein the sheet-like member being heated along the extending direction is heated. By being passed through the mold, the shape in the natural state can be maintained.
　第１０の態様に係る保護部材付電線は、第１から第９のいずれか１つの態様に係る保護部材と、前記保護部材が取り付けられた電線と、を備える。 The electric wire with a protective member according to a tenth aspect includes the protective member according to any one of the first to ninth aspects, and an electric wire to which the protective member is attached.
　第１１の態様に係る保護部材の製造方法は、少なくとも一端側に部分筒部が形成された保護部材の製造方法であって、（ａ）シート状部材を延在方向に沿って送る工程と、（ｂ）送られている途中の前記シート状部材を加熱する工程と、（ｃ）送られている途中の前記シート状部材を型に通す工程と、を備える。 The method for producing a protective member according to the eleventh aspect is a method for producing a protective member in which a partial cylindrical portion is formed at least on one end side, and (a) a step of feeding a sheet-like member along the extending direction; (B) a step of heating the sheet-like member being sent, and (c) a step of passing the sheet-like member being sent through a mold.
　第１から第１０の態様によると、保護部材が、シート状部材の幅方向一方側端部を曲げて形成された第１部分筒部と、第１部分筒部の縁部からシート状部材の幅方向他方側端部に亘る部分であって、自然状態で第１部分筒部との間で開口を形成可能に延び、第１部分筒部に線状体を挿入した後に第１部分筒部の内周側又は外周側に重なるように曲げ可能に形成された開閉片部とを備える。このため、自然状態で、開口を通して容易に第１部分筒部内に電線等を挿入することができる。また、電線挿入後に第１部分筒部は部分筒形状を維持しているため、電線挿入後の取扱性の低下が抑えられる。 According to the first to tenth aspects, the protective member is formed by bending the one end portion in the width direction of the sheet-like member, and the edge of the first partial cylinder portion of the sheet-like member. 1st partial cylinder part which is a part over the width direction other side edge part, Comprising: It extends so that opening can be formed between 1st partial cylinder parts in a natural state, and after inserting a linear body into a 1st partial cylinder part And an opening / closing piece formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side. For this reason, an electric wire etc. can be easily inserted in a 1st partial cylinder part through opening in a natural state. Moreover, since the 1st partial cylinder part is maintaining the partial cylinder shape after electric wire insertion, the fall of the handleability after electric wire insertion is suppressed.
　特に、第２の態様によると、第１部分筒部が半筒以上に曲げて形成されているため、第１部分筒部が半筒未満に曲げられる場合に比べて電線の挿入性の低下を抑えつつ、電線挿入後の取扱性を向上させることができる。 In particular, according to the second aspect, since the first partial tube portion is formed to be bent to a half tube or more, the insertion property of the electric wire is reduced as compared with the case where the first partial tube portion is bent to less than the half tube. While suppressing, the handleability after electric wire insertion can be improved.
　特に、第３の態様によると、第１部分筒部が４分の３筒以上に曲げて形成されているため、第１部分筒部が４分の３筒未満に曲げられる場合に比べて電線挿入後の取扱性を向上させることができる。 In particular, according to the third aspect, since the first partial cylinder portion is formed by bending it into three quarters or more, the electric wire is compared with the case where the first partial cylinder portion is bent to less than three quarters. The handleability after insertion can be improved.
　特に、第４の態様によると、開閉片部は、自然状態で平板状又は第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されているため、開閉片部に多少の外力がかかっても第１部分筒部の開口を塞ぐような変形がし難くなる。これにより、電線等の挿入性の向上につながる。 In particular, according to the fourth aspect, the opening / closing piece portion is formed so as to be able to maintain a flat plate shape or a plate shape having a radius of curvature larger than the curvature radius of the first partial cylinder portion in a natural state. Even if some external force is applied, it is difficult to deform so as to close the opening of the first partial cylinder portion. Thereby, it leads to the improvement of insertability, such as an electric wire.
　特に、第５の態様によると、開閉片部は、シート状部材の幅方向他方側端部を第１部分筒部と同じ曲率半径で第１部分筒部側に曲げて形成された第２部分筒部を含むため、保護部材の他方側端部がめくれることを抑制することができる。この際、開閉片部が自然状態で第１部分筒部と第２部分筒部との間に開口が形成可能に第１部分筒部と第２部分筒部とをつなぐ連結部を含むため、電線の挿入性の低下を抑えることができる。 In particular, according to the fifth aspect, the opening / closing piece portion is formed by bending the other end portion in the width direction of the sheet-like member toward the first partial cylinder portion side with the same curvature radius as that of the first partial cylinder portion. Since the cylindrical portion is included, it is possible to suppress the other end portion of the protective member from being turned up. At this time, since the open / close piece includes a connecting portion that connects the first partial cylinder and the second partial cylinder so that an opening can be formed between the first partial cylinder and the second partial cylinder in a natural state, It is possible to suppress a decrease in the insertability of the electric wire.
　特に、第６の態様によると、第２部分筒部は、半筒に曲げられて形成されているため、第２部分筒部を第１部分筒部の外側で線状体の周囲に取り付けた際に第２部分筒部が線状体から外れにくくなる。これにより、電線挿入後の取扱性の向上につながる。また、第２部分筒部を第１部分筒部及び線状体の外側に取り付ける際に、第２部分筒部を広げなくとも取り付けることができる。これにより、保護部材の取付性の向上につながる。 In particular, according to the sixth aspect, since the second partial cylinder is formed by being bent into a half cylinder, the second partial cylinder is attached to the periphery of the linear body outside the first partial cylinder. At this time, it becomes difficult for the second partial cylindrical portion to come off the linear body. Thereby, it leads to the improvement of the handleability after electric wire insertion. Moreover, when attaching a 2nd partial cylinder part to the 1st partial cylinder part and the outer side of a linear body, it can attach without expanding a 2nd partial cylinder part. Thereby, it leads to the improvement of the attachment property of a protection member.
　特に、第７の態様によると、連結部が自然状態で平板状又は第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されているため、開閉片部に多少の外力がかかっても第１部分筒部の開口を塞ぐような変形がし難くなる。これにより、電線等の挿入性の向上につながる。 In particular, according to the seventh aspect, the connecting portion is formed so as to be able to maintain a flat plate shape or a plate shape having a radius of curvature larger than the radius of curvature of the first partial cylinder portion in a natural state. Even when an external force is applied, it is difficult to deform so as to close the opening of the first partial cylinder portion. Thereby, it leads to the improvement of insertability, such as an electric wire.
　特に、第８の態様によると、シート状部材が不織布を材料として形成されているため、シート状部材から保護部材を容易に製造することができる。 Particularly, according to the eighth aspect, since the sheet-like member is formed from a nonwoven fabric, the protective member can be easily manufactured from the sheet-like member.
　特に、第９の態様によると、延在方向に沿って送られている途中のシート状部材が加熱された状態で型に通されることで、自然状態の形状を維持可能に形成されているため、シート状部材から保護部材を連続的に製造することができる。 In particular, according to the ninth aspect, the sheet-shaped member being sent along the extending direction is passed through the mold in a heated state, so that the shape in the natural state can be maintained. Therefore, the protective member can be continuously manufactured from the sheet-like member.
　第１１の態様によると、（ａ）シート状部材を延在方向に沿って送る工程と、（ｂ）送られている途中のシート状部材を加熱する工程と、（ｃ）送られている途中のシート状部材を型に通す工程と、を備えるため、シート状部材から保護部材を連続的に製造することができる。 According to the eleventh aspect, (a) a step of sending the sheet-like member along the extending direction, (b) a step of heating the sheet-like member being sent, and (c) a step of being sent The sheet-like member is passed through a mold, so that the protective member can be continuously produced from the sheet-like member.
第１実施形態に係る保護部材を示す側面図である。It is a side view which shows the protection member which concerns on 1st Embodiment. 第１実施形態に係る保護部材付電線を示す斜視図である。It is a perspective view which shows the electric wire with a protection member which concerns on 1st Embodiment. 第１実施形態に係る保護部材付電線を示す側面図である。It is a side view which shows the electric wire with a protection member which concerns on 1st Embodiment. 第１実施形態に係る保護部材付電線を示す平面図である。It is a top view which shows the electric wire with a protection member which concerns on 1st Embodiment. 保護部材を電線に取り付ける様子を示す説明図である。It is explanatory drawing which shows a mode that a protection member is attached to an electric wire. 第１実施形態に係る保護部材を製造する様子を示す説明図である。It is explanatory drawing which shows a mode that the protection member which concerns on 1st Embodiment is manufactured. 保護部材の製造に用いる型を示す正面図である。It is a front view which shows the type | mold used for manufacture of a protection member. 保護部材の製造に用いる型を示す背面図である。It is a rear view which shows the type | mold used for manufacture of a protection member. 第２実施形態に係る保護部材を示す側面図である。It is a side view which shows the protection member which concerns on 2nd Embodiment. 第３実施形態に係る保護部材を示す側面図である。It is a side view which shows the protection member which concerns on 3rd Embodiment. 第４実施形態に係る保護部材を示す側面図である。It is a side view which shows the protection member which concerns on 4th Embodiment.
　｛第１実施形態｝
　以下、第１実施形態に係る保護部材、保護部材付電線及び保護部材の製造方法について説明する。図１は、第１実施形態に係る保護部材２０を示す側面図である。図２は、第１実施形態に係る保護部材付電線１０を示す斜視図である。図３は、第１実施形態に係る保護部材付電線１０を示す側面図である。図４は、第１実施形態に係る保護部材付電線１０を示す平面図である。 {First embodiment}
Hereinafter, the manufacturing method of the protection member which concerns on 1st Embodiment, an electric wire with a protection member, and a protection member is demonstrated. FIG. 1 is a side view showing a protection member 20 according to the first embodiment. FIG. 2 is a perspective view showing the electric wire 10 with a protective member according to the first embodiment. Drawing 3 is a side view showing electric wire 10 with a protection member concerning a 1st embodiment. Drawing 4 is a top view showing electric wire 10 with a protection member concerning a 1st embodiment.
　保護部材２０は、保護等を目的として線状体の周囲に取り付けられる。ここでは、線状体として電線１２が想定されている。つまり、ここでは電線１２の周囲に保護部材２０が取り付けられ、保護部材付電線１０をなしている。 The protective member 20 is attached around the linear body for the purpose of protection or the like. Here, the electric wire 12 is assumed as a linear body. That is, here, the protective member 20 is attached around the electric wire 12 to form the electric wire 10 with a protective member.
　電線１２は、少なくとも１本含まれていればよい。電線１２は、その長手方向の中間部分に保護部材２０が外装されている。電線１２は、芯線の外周に樹脂が押出被覆等されることで被覆部が形成された構成とされている。ここでは、複数の電線１２が束ねられた電線束１２ａの例で説明する。なお、電線束１２ａには、光ファイバ等が電線１２に沿って配設されていてもよい。電線１２は、車両等の配設対象箇所に配設された状態で、車両等に搭載された各種電気機器同士を電気的に接続するものとして用いられる。なお、図２～図５及び図９～図１１では、電線束１２ａの概形が描かれている。 It is sufficient that at least one electric wire 12 is included. As for the electric wire 12, the protection member 20 is armored in the middle part of the longitudinal direction. The electric wire 12 is configured such that a covering portion is formed by extrusion coating of resin on the outer periphery of the core wire. Here, an example of an electric wire bundle 12a in which a plurality of electric wires 12 are bundled will be described. An optical fiber or the like may be disposed along the electric wire 12 in the electric wire bundle 12a. The electric wire 12 is used to electrically connect various electric devices mounted on a vehicle or the like in a state where the electric wire 12 is arranged at a location to be arranged on the vehicle or the like. 2 to 5 and 9 to 11, the outline of the wire bundle 12a is depicted.
　保護部材２０は、シート状部材４０が曲げられて形成されている（図６参照）。シート状部材４０としてここでは、不織布が採用されているものとして説明するが、このことは必須ではない。シート状部材４０としては、例えば、複数の素線が織られた織布又は樹脂成形品等、不織布以外であってもよい。 The protective member 20 is formed by bending a sheet-like member 40 (see FIG. 6). Here, the sheet-like member 40 will be described as a non-woven fabric, but this is not essential. The sheet-like member 40 may be other than a nonwoven fabric such as a woven fabric or a resin molded product in which a plurality of strands are woven.
　ここで、保護部材２０を構成するシート状部材４０として採用されている不織布について説明する。不織布は、例えば、絡み合う基本繊維とバインダと称される接着樹脂とを含む。接着樹脂は、基本繊維の融点よりも低い融点（例えば、約１１０[℃]から約１５０[℃]の融点）を有する熱可塑性樹脂である。このような不織布は、基本繊維の融点よりも低く、かつ、接着樹脂の融点よりも高い温度に加熱されることにより、接着樹脂が溶融して基本繊維の隙間に溶け込む。その後、不織布の温度が、接着樹脂の融点よりも低い温度まで下がると、接着樹脂は、周囲に存在する基本繊維を結合した状態で硬化する。これにより、不織布は、加熱前の状態よりも硬くなり、加熱後の冷却時に型枠等によって拘束された形状に成形される。 Here, the nonwoven fabric adopted as the sheet-like member 40 constituting the protective member 20 will be described. The nonwoven fabric includes, for example, intertwined basic fibers and an adhesive resin called a binder. The adhesive resin is a thermoplastic resin having a melting point lower than the melting point of the basic fiber (for example, a melting point of about 110 [° C.] to about 150 [° C.]). Such a nonwoven fabric is heated to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, so that the adhesive resin melts and melts into the gaps of the basic fibers. Thereafter, when the temperature of the nonwoven fabric is lowered to a temperature lower than the melting point of the adhesive resin, the adhesive resin is cured in a state in which the basic fibers existing around are bonded. Thereby, a nonwoven fabric becomes harder than the state before a heating, and is shape | molded by the shape restrained by the mold etc. at the time of the cooling after a heating.
　接着樹脂は、例えば、粒状の樹脂又は繊維状の樹脂などである。また、接着樹脂は、芯繊維の周囲を覆うように形成されることも考えられる。このように、芯繊維が接着樹脂で被覆された構造を有する繊維は、バインダ繊維などと称される。芯繊維の材料は、例えば、基本繊維と同じ材料が採用される。 The adhesive resin is, for example, granular resin or fibrous resin. It is also conceivable that the adhesive resin is formed so as to cover the periphery of the core fiber. As described above, the fiber having a structure in which the core fiber is coated with the adhesive resin is referred to as a binder fiber. As the material of the core fiber, for example, the same material as the basic fiber is adopted.
　また、基本繊維は、接着樹脂の融点において繊維状態が維持されればよく、樹脂繊維の他、各種の繊維が採用され得る。また、接着樹脂は、例えば、基本繊維の融点よりも低い融点を有する熱可塑性樹脂繊維が採用される。 Further, the basic fiber only needs to maintain the fiber state at the melting point of the adhesive resin, and various fibers can be employed in addition to the resin fiber. In addition, as the adhesive resin, for example, a thermoplastic resin fiber having a melting point lower than that of the basic fiber is employed.
　不織布を構成する基本繊維と接着樹脂との組合せとしては、例えば、ＰＥＴ（ポリエチレンテレフタレート）を主成分とする樹脂繊維が基本繊維として採用され、ＰＥＴ及びＰＥＩ（ポリエチレンイソフタレート）の共重合樹脂が接着樹脂として採用されることが考えられる。そのような不織布において、基本繊維の融点は概ね２５０[℃]であり、接着樹脂の融点は約１１０[℃]から約１５０[℃]の間の温度である。 As a combination of the basic fiber constituting the nonwoven fabric and the adhesive resin, for example, a resin fiber mainly composed of PET (polyethylene terephthalate) is adopted as a basic fiber, and a copolymer resin of PET and PEI (polyethylene isophthalate) is bonded. It may be adopted as a resin. In such a nonwoven fabric, the melting point of the basic fiber is approximately 250 [° C.], and the melting point of the adhesive resin is a temperature between about 110 [° C.] and about 150 [° C.].
　具体的には、保護部材２０は、第１部分筒部２２と開閉片部３０とを含む。第１部分筒部２２と開閉片部３０との間には隙間があいており、当該隙間を通して第１部分筒部２２に電線束１２ａを挿入可能である。また、第１部分筒部２２に電線束１２ａを挿入した後に、上記隙間を塞ぐように開閉片部３０を閉じることができる。第１部分筒部２２に電線束１２ａを挿入した状態で、開閉片部３０が閉じられることで、保護部材２０が電線束１２ａに取り付けられた状態となる。 Specifically, the protection member 20 includes a first partial cylinder portion 22 and an opening / closing piece portion 30. There is a gap between the first partial cylinder portion 22 and the opening / closing piece 30, and the wire bundle 12 a can be inserted into the first partial cylinder portion 22 through the gap. Moreover, after inserting the wire bundle 12a in the 1st partial cylinder part 22, the opening-and-closing piece part 30 can be closed so that the said clearance gap may be plugged up. With the wire bundle 12a inserted into the first partial tube portion 22, the opening / closing piece 30 is closed, so that the protection member 20 is attached to the wire bundle 12a.
　第１部分筒部２２は、シート状部材４０の幅方向一方側端部４１を曲げて形成されている。より詳細には、第１部分筒部２２は、シート状部材４０の幅方向一方側端部４１から中間部分にかけての部分が丸められることで形成されている。上述したように、第１部分筒部２２は、保護部材２０が電線束１２ａに取り付けられる際に、最初に電線束１２ａが挿入される部分である。 The first partial cylinder portion 22 is formed by bending the width direction one end portion 41 of the sheet-like member 40. More specifically, the first partial cylinder portion 22 is formed by rounding a portion from the width direction one side end portion 41 to the intermediate portion of the sheet-like member 40. As described above, the first partial cylinder portion 22 is a portion into which the wire bundle 12a is first inserted when the protection member 20 is attached to the wire bundle 12a.
　より具体的には、第１部分筒部２２は、周方向に開環した筒状（ここでは半筒状）に形成されている。この際、第１部分筒部２２は、半筒より小さく（例えば、３分の１筒状）形成されていてもよい。しかしながら、第１部分筒部２２が半筒以上に形成されていると、第１部分筒部２２に電線束１２ａを挿入した後であって開閉片部３０を閉じる前の状態で、電線束１２ａが第１部分筒部２２から外れにくくなり、開閉片部３０を閉じる作業が容易になる。 More specifically, the first partial cylinder portion 22 is formed in a cylindrical shape (here, a semi-cylindrical shape) opened in the circumferential direction. At this time, the first partial cylinder portion 22 may be formed smaller than the half cylinder (for example, a third cylinder). However, when the first partial cylinder portion 22 is formed in a half cylinder or more, the wire bundle 12a is in a state after the wire bundle 12a is inserted into the first partial cylinder portion 22 and before the opening / closing piece 30 is closed. However, it becomes difficult to remove from the first partial cylinder portion 22, and the operation of closing the opening / closing piece 30 is facilitated.
　また、ここでは、第１部分筒部２２の内径は、電線束１２ａの外径と略同じに設定されている。もっとも、第１部分筒部２２の内径は適宜設定されていればよい。しかしながら、第１部分筒部２２の内径が電線束１２ａの外径と同じかそれ以下に設定されていると、第１部分筒部２２に電線束１２ａを挿入した後であって開閉片部３０を閉じる前の状態で、電線束１２ａが第１部分筒部２２から外れにくくなり、開閉片部３０を閉じる作業が容易になる。 Further, here, the inner diameter of the first partial cylinder portion 22 is set to be substantially the same as the outer diameter of the wire bundle 12a. But the internal diameter of the 1st partial cylinder part 22 should just be set suitably. However, if the inner diameter of the first partial cylinder portion 22 is set to be equal to or less than the outer diameter of the wire bundle 12a, the opening / closing piece portion 30 is inserted after the wire bundle 12a is inserted into the first partial cylinder portion 22. In the state before closing the wire bundle 12a, it becomes difficult for the wire bundle 12a to come off from the first partial cylinder portion 22, and the operation of closing the open / close piece 30 is facilitated.
　開閉片部３０は、第１部分筒部２２の縁部からシート状部材４０の幅方向他方側端部４２に亘る部分である。開閉片部３０は、自然状態で第１部分筒部２２との間で開口が形成されるように延びている。より詳細には、上述したように第１部分筒部２２が半筒状に設けられたうえで、開閉片部３０と第１部分筒部２２とが自然状態で間隔をあけるように設けられることで、第１部分筒部２２の開環した部分が外部に露出している。ここでは、開閉片部３０は、第１部分筒部２２の一方側端縁部から当該端縁部の接線方向に延びるように形成されている。この際、開閉片部３０は、自然状態で平板状を維持可能に形成されている。このため、保護部材２０は、側面視で略Ｊ字状に形成されている。なお、開閉片部３０は、上記接線方向よりも内側又は外側に延びるように形成されていてもよい。 The opening / closing piece 30 is a portion extending from the edge of the first partial cylinder 22 to the other end 42 in the width direction of the sheet-like member 40. The opening / closing piece 30 extends so that an opening is formed between the opening / closing piece 30 and the first partial cylinder 22 in a natural state. More specifically, as described above, the first partial cylinder portion 22 is provided in a semi-cylindrical shape, and the opening / closing piece 30 and the first partial cylinder portion 22 are provided so as to be spaced apart in a natural state. Thus, the opened portion of the first partial cylinder portion 22 is exposed to the outside. Here, the opening / closing piece 30 is formed so as to extend from the one side edge of the first partial cylinder 22 in the tangential direction of the edge. At this time, the opening / closing piece 30 is formed so as to be able to maintain a flat plate shape in a natural state. For this reason, the protection member 20 is formed in a substantially J shape in a side view. The opening / closing piece 30 may be formed so as to extend inward or outward from the tangential direction.
　ここで、自然状態とは、作業者等による意図的な外力が働いていない状態である。なお、開口を鉛直方向上向きにした状態で保護部材２０を保持した場合には、自然状態であっても、自重（重力）によって開閉片部３０が曲がり、開口を塞ぐことはあり得る。しかしながら、開口を鉛直方向下向きにした状態で保護部材２０を保持した場合には、自然状態であれば、開閉片部３０が開口を塞ぐことは抑制される。 Here, the natural state is a state in which no intentional external force is applied by an operator or the like. In addition, when the protection member 20 is held with the opening facing upward in the vertical direction, the opening / closing piece 30 can be bent by its own weight (gravity) and block the opening even in a natural state. However, when the protection member 20 is held in a state where the opening is directed downward in the vertical direction, the opening / closing piece 30 is suppressed from being blocked by the natural state.
　開閉片部３０は、自然状態であって開口を鉛直方向上向きにした状態で保護部材２０を保持した場合でも、後に開口を閉じるように曲げ可能な範囲内で、開口を塞がない程度の剛性を有するように形成されていることが好ましい。 Even when the opening / closing piece 30 is in a natural state and holds the protective member 20 in a state where the opening is vertically upward, the opening / closing piece 30 is rigid enough not to block the opening within a range that can be bent to close the opening later. It is preferable that it is formed to have.
　第１部分筒部２２の内部に電線束１２ａを挿入する際には、開閉片部３０と第１部分筒部２２との間の隙間が取っ掛りとなる。即ち、開閉片部３０と第１部分筒部２２との間の隙間の寸法が電線束１２ａの外径より小さい場合でも、作業者は、当該隙間を容易に広げることができる。この場合、例えば、開閉片部３０を曲げてもよいし、第１部分筒部２２を曲げてもよい。また、開閉片部３０と第１部分筒部２２との間の隙間の寸法が電線束１２ａの外径以上であれば、作業者は、当該隙間からそのまま電線束１２ａを挿入することができる。なお、第１部分筒部２２の開口が電線束１２ａより小さければ、上記隙間を広げるのと同様に開口を広げるように開閉片部３０と第１部分筒部２２とを離間させるとよい。ここでは、上述したように保護部材２０が略Ｊ字状に形成されると共に第１部分筒部２２が半筒状に形成されているため、例えば、電線束１２ａを開閉片部３０の内向き面に沿って摺動させるように挿入させることで、隙間及び開口を広げなくとも、電線束１２ａを第１部分筒部２２に挿入することができる。これにより、第１部分筒部２２の内部に電線束１２ａを収容する作業が容易となる。 When inserting the wire bundle 12a into the first partial cylinder part 22, the gap between the opening / closing piece part 30 and the first partial cylinder part 22 becomes a handle. That is, even when the dimension of the gap between the opening / closing piece 30 and the first partial cylinder 22 is smaller than the outer diameter of the wire bundle 12a, the operator can easily widen the gap. In this case, for example, the opening / closing piece 30 may be bent, or the first partial cylinder 22 may be bent. Moreover, if the dimension of the clearance gap between the opening-and-closing piece part 30 and the 1st partial cylinder part 22 is more than the outer diameter of the electric wire bundle 12a, the operator can insert the electric wire bundle 12a as it is from the said clearance gap. In addition, if the opening of the 1st partial cylinder part 22 is smaller than the wire bundle 12a, it is good to space apart the opening-and-closing piece part 30 and the 1st partial cylinder part 22 so that opening may be expanded similarly to expanding the said clearance gap. Here, as described above, since the protective member 20 is formed in a substantially J shape and the first partial cylindrical portion 22 is formed in a semi-cylindrical shape, for example, the wire bundle 12a is directed inward of the opening / closing piece portion 30. The wire bundle 12a can be inserted into the first partial cylinder portion 22 without widening the gap and the opening by being inserted so as to slide along the surface. Thereby, the operation | work which accommodates the electric wire bundle 12a in the inside of the 1st partial cylinder part 22 becomes easy.
　また、開閉片部３０は、第１部分筒部２２に電線束１２ａを挿入した後に第１部分筒部２２の内周側又は外周側に重なるように曲げ可能に形成されている。上述したように、保護部材２０を電線束１２ａに取り付ける際、第１部分筒部２２に電線束１２ａを挿入した後に開閉片部３０が閉じられる。この際、ここでは、開閉片部３０の先端、つまり、シート状部材４０の幅方向他方側端部４２は、第１部分筒部２２の外側に重なる。従って、保護部材２０が電線束１２ａに取り付けられた際に、シート状部材４０の幅方向他方側端部４２の端縁部は外部に露出し、幅方向一方側端部４１の端縁部は外部への露出が抑えられている。なお、保護部材２０を電線束１２ａから取り外す必要が有る場合には開閉片部３０が開かれて、第１部分筒部２２から電線束１２ａを取り出し可能となる。 The opening / closing piece 30 is formed to be bendable so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part 22 after the wire bundle 12 a is inserted into the first partial cylinder part 22. As described above, when the protection member 20 is attached to the wire bundle 12a, the open / close piece 30 is closed after the wire bundle 12a is inserted into the first partial tube portion 22. At this time, here, the front end of the opening / closing piece 30, that is, the other end 42 in the width direction of the sheet-like member 40 overlaps the outside of the first partial cylindrical portion 22. Therefore, when the protection member 20 is attached to the electric wire bundle 12a, the edge of the widthwise other side end 42 of the sheet-like member 40 is exposed to the outside, and the edge of the widthwise one side end 41 is External exposure is suppressed. In addition, when it is necessary to remove the protection member 20 from the wire bundle 12a, the opening / closing piece 30 is opened, and the wire bundle 12a can be taken out from the first partial tube portion 22.
　ここでは、第１部分筒部２２は、少なくともその外形を維持可能な程度の剛性を有するように形成される。また、開閉片部３０は、第１部分筒部２２よりも低い剛性を有するよう形成されている。これにより開閉片部３０が第１部分筒部２２よりも曲げ容易であるため、開閉片部３０は、第１部分筒部２２に対して容易に開閉可能とされている。なお、例えば、不織布のバインダ繊維の種類或いは量又は不織布から保護部材２０を形成する際に加える熱量等を調節することで、開閉片部３０を変形可能に形成することができる。 Here, the first partial cylinder portion 22 is formed so as to have at least rigidity sufficient to maintain its outer shape. Further, the opening / closing piece 30 is formed to have lower rigidity than the first partial cylinder 22. As a result, the opening / closing piece 30 is easier to bend than the first partial cylinder 22, so that the opening / closing piece 30 can be easily opened and closed with respect to the first partial cylinder 22. For example, the opening / closing piece 30 can be formed to be deformable by adjusting the type or amount of the binder fiber of the nonwoven fabric or the amount of heat applied when forming the protective member 20 from the nonwoven fabric.
　また、開閉片部３０は、保護部材２０が電線束１２ａに取り付けられた状態で、第１部分筒部２２の周方向において４分の１周分以上４分の３周分以下の範囲で（ここでは、４分の１周）重なっている。もっとも、開閉片部３０の重なりの範囲は、第１部分筒部２２の周方向において４分の１周分未満であってもよいし、４分の３周分より多い範囲であってもよい。しかしながら、開閉片部３０が、第１部分筒部２２の周方向において４分の１周分以上重なることにより、開閉片部３０と第１部分筒部２２との間から電線束１２ａがはみ出すことをより確実に抑制することができる。また、開閉片部３０が、第１部分筒部２２の周方向において４分の３周分以下の範囲で重なることにより、第１部分筒部２２に電線束１２ａを挿入した後に開閉片部３０を第１部分筒部２２に重ねる作業が面倒になることを抑制することができる。 In addition, the opening / closing piece portion 30 is in a range of a quarter turn or more and a quarter turn or less in the circumferential direction of the first partial cylinder portion 22 in a state where the protection member 20 is attached to the wire bundle 12a ( Here, they are overlapped by one quarter). However, the overlapping range of the opening / closing piece 30 may be less than a quarter of the circumference in the circumferential direction of the first partial cylinder 22 or may be a range of more than three quarters. . However, when the open / close piece 30 is overlapped by a quarter or more in the circumferential direction of the first partial cylinder portion 22, the wire bundle 12 a protrudes between the open / close piece 30 and the first partial cylinder portion 22. Can be more reliably suppressed. In addition, the opening / closing piece 30 overlaps within a range of three quarters or less in the circumferential direction of the first partial cylinder portion 22, so that the opening / closing piece portion 30 is inserted after the wire bundle 12 a is inserted into the first partial cylinder portion 22. It can suppress that the operation | work which overlaps on the 1st partial cylinder part 22 becomes troublesome.
　また、ここでは、保護部材２０は、内周側の部分が外周側の部分に比べて硬くなるように形成されている。 Further, here, the protection member 20 is formed so that the inner peripheral side portion is harder than the outer peripheral side portion.
　ここで、保護部材２０のうち内周側の部分を外周側の部分に比べて硬くするには、例えば、不織布のうち内周面側のバインダ繊維の融ける量を外周面側のバインダ繊維の融ける量よりも多くすることが考えられる。より詳細には、上記のようなバインダ繊維を有する不織布は、一般に、バインダ繊維のうち一度融けた後、冷えて固まるバインダ繊維の量が多いほど固くなる性質を有する。このように、内周面側のバインダ繊維の融ける量を外周面側のバインダ繊維の融ける量よりも多くするには、例えば、以下のように、融ける前の段階で不織布の中に配合するバインダ繊維の量を調節する方法と、バインダ繊維の融点を低くする方法と、融かすバインダ繊維の量を調節する方法とが考えられる。なお、上記３つの方法は、いずれか１つだけ行われてもよいし、複数が併用されてもよい。複数が併用されると、より確実に、保護部材２０のうち内周側の部分を外周側の部分に比べて硬くすることができる。 Here, in order to make the inner peripheral side portion of the protection member 20 harder than the outer peripheral side portion, for example, the amount of the binder fiber on the inner peripheral surface side of the non-woven fabric melts the binder fiber on the outer peripheral surface side. It is conceivable to make it more than the amount. More specifically, a nonwoven fabric having binder fibers as described above generally has a property of becoming harder as the amount of binder fibers that are once melted and then cooled and hardened is larger. Thus, in order to increase the melting amount of the binder fiber on the inner peripheral surface side than the melting amount of the binder fiber on the outer peripheral surface side, for example, the binder blended in the nonwoven fabric at the stage before melting as follows, for example A method for adjusting the amount of the fiber, a method for lowering the melting point of the binder fiber, and a method for adjusting the amount of the binder fiber to be melted are considered. Note that only one of the three methods may be performed, or a plurality of the methods may be used in combination. When a plurality are used in combination, the inner peripheral side portion of the protective member 20 can be made harder than the outer peripheral side portion.
　融ける前の段階で不織布の中に配合するバインダ量を調節するには、不織布のバインダ繊維の量を内周面になる側に多く配合するとともに、外周面になる側に少なく配合すればよい。このようにバインダ繊維の量を変化させる場合、例えば、１枚の不織布の中でバインダ繊維の混入量を一方主面側から他方主面側にかけて内周面側が配合量が多くなるように連続的に変化させることが考えられる。また、例えば、１枚の不織布の中でのバインダ繊維の分布は均一だが、その配合量の異なる複数枚の不織布を配合量の多い不織布が内周面側にくるように厚み方向に重ね合せることも考えられる。 In order to adjust the amount of the binder to be blended in the nonwoven fabric before melting, the amount of the binder fiber in the nonwoven fabric should be blended in a large amount on the inner circumferential surface and less in the outer circumferential surface. When the amount of the binder fiber is changed in this way, for example, the amount of the binder fiber mixed in one nonwoven fabric is continuously increased from one main surface side to the other main surface side so that the blending amount increases on the inner peripheral surface side. It is possible to change it to Also, for example, the distribution of the binder fibers in one nonwoven fabric is uniform, but a plurality of nonwoven fabrics with different blending amounts are overlapped in the thickness direction so that the nonwoven fabric with a large blending amount is on the inner peripheral surface side. Is also possible.
　また、バインダ繊維の融点を低くするには、バインダ繊維の種類を変えればよい。より詳細には、バインダ繊維を融かす際に、その融点が低い方がより融けやすくなり、同じ加熱温度及び加熱時間で融ける割合がより確実に増える。これを利用して、不織布のうち内側になる部分のバインダ繊維を外側になる部分のバインダ繊維よりも融点が低いものを用いることで、熱処理後に冷えた保護部材２０で、内周側が外周側よりも固くなる。 In order to lower the melting point of the binder fiber, the type of the binder fiber may be changed. More specifically, when the binder fiber is melted, the lower the melting point, the easier it is to melt, and the rate of melting at the same heating temperature and heating time increases more reliably. Utilizing this, the inner part of the nonwoven fabric is the protective member 20 cooled after the heat treatment by using the nonwoven fabric having a lower melting point than the outer part of the binder fiber. It becomes hard.
　また、融かすバインダ繊維の量を調節するには、例えば、熱処理の温度、熱源までの距離または時間等を調節して、加えられる熱量（及び放出される熱量）を調節すればよい。より詳細には、熱処理する際に、内周面になる側を高温で処理するとともに外周面になる側を低温で処理する、内周面になる側を熱源に近い位置で処理するとともに外周面になる側を熱源に遠い位置で処理する、又は、内周面になる側を長時間かけて処理するとともに外周面になる側を短時間で処理するなどすることで、内周面側のバインダ繊維の融ける量を外周面側のバインダ繊維の融ける量よりも多くすることができる。これにより、熱処理後に冷えた保護部材２０で、内周側が外周側よりも固くなる。 In order to adjust the amount of the binder fiber to be melted, for example, the amount of heat applied (and the amount of heat released) may be adjusted by adjusting the temperature of the heat treatment, the distance to the heat source, the time, or the like. More specifically, when the heat treatment is performed, the side that becomes the inner peripheral surface is processed at a high temperature and the side that becomes the outer peripheral surface is processed at a low temperature, and the side that becomes the inner peripheral surface is processed at a position close to the heat source and the outer peripheral surface. By processing the side that becomes the heat source at a position far from the heat source, or processing the side that becomes the inner peripheral surface for a long time and processing the side that becomes the outer peripheral surface in a short time, the binder on the inner peripheral surface side The amount of fiber melting can be made larger than the amount of binder fiber melting on the outer peripheral surface side. Thereby, the inner peripheral side becomes harder than the outer peripheral side in the protective member 20 cooled after the heat treatment.
　なお、保護部材２０の内周側の部分が外周側の部分に比べて硬くなるように形成されている場合、保護部材２０のうち線状体に接している又は対向している部分が外周側の部分に比べて硬くなるように形成されていればよく、第１部分筒部２２と開閉片部３０とが重ねあわされている部分のうち外周側に位置する部分に関しては、シート状部材４０の内周側の部分が外周側の部分に比べて硬くなるように形成されていることは必須ではない。もっとも、ここでは、１枚のシート状の不織布を一括して処理することで保護部材２０と成しているため、保護部材２０は全体として内周側の部分が外周側の部分に比べて硬くなるように形成されている。 In addition, when it forms so that the inner peripheral part of the protection member 20 may become hard compared with the outer peripheral part, the part which is in contact with the linear body among the protective members 20, or is facing is an outer peripheral side. As long as it is formed so as to be harder than the portion, the portion located on the outer peripheral side of the portion where the first partial cylinder portion 22 and the opening / closing piece portion 30 are overlapped is used as the sheet-like member 40. It is not indispensable that the inner peripheral portion is formed so as to be harder than the outer peripheral portion. However, since the sheet-shaped nonwoven fabric is collectively treated as the protective member 20 here, the protective member 20 as a whole is harder on the inner peripheral side than on the outer peripheral side. It is formed to become.
　なお、シート状の不織布のうち内周面側に位置する部分が、例えば、外周面側に位置する部分に比べて熱収縮率が大きくなるように設定されていると、シート状の不織布を曲げて保護部材２０を形成する際に、シート状の不織布が曲がり易くなると共に曲がった状態に維持されやすい。例えば、シート状の不織布のうち、第１部分筒部２２に成形される部分の一方主面側が他方主面側よりも熱収縮率が大きくなるように設定される。このように、シート状の不織布のうち、一方主面側の熱収縮率を他方主面側の熱収縮率よりも大きくするには、例えば、以下の方法が考えられる。 In addition, if the portion located on the inner peripheral surface side of the sheet-like nonwoven fabric is set so that the thermal contraction rate is larger than the portion located on the outer peripheral surface side, the sheet-like nonwoven fabric is bent. When the protective member 20 is formed, the sheet-like nonwoven fabric is easily bent and is easily maintained in a bent state. For example, in the sheet-like nonwoven fabric, the one main surface side of the portion formed in the first partial cylinder portion 22 is set so that the thermal contraction rate is larger than that of the other main surface side. Thus, in order to make the thermal contraction rate of the one main surface side larger than the thermal contraction rate of the other main surface side in the sheet-like nonwoven fabric, for example, the following method can be considered.
　即ち、配合する繊維の素材で熱収縮率の異なる２種類の繊維を用い、内周側を熱収縮率の大きい繊維の割合が多くなるようにする。熱収縮率の異なる２種類の繊維として、ここでは、ＰＥＴ（ポリエチレンテレフタレート）とＰＰ（ポリプロピレン）とが用いられている。ＰＥＴとＰＰとでは、一般に、ＰＰの方が、熱収縮率が大きくしやすい。このため、不織布のうち内周側になる方に外周側になる方よりもＰＰを多く配合することで、不織布のうち内周側に位置する部分の方が外周側に位置する部分よりも熱収縮率が大きくなる。 That is, two kinds of fibers having different heat shrinkage rates are used depending on the fiber material to be blended, and the ratio of fibers having a large heat shrinkage rate is increased on the inner peripheral side. Here, PET (polyethylene terephthalate) and PP (polypropylene) are used as two types of fibers having different heat shrinkage rates. In general, PP and PP tend to have a larger thermal shrinkage rate. For this reason, by blending more PP on the inner circumferential side of the nonwoven fabric than on the outer circumferential side, the portion located on the inner circumferential side of the nonwoven fabric is heated more than the portion located on the outer circumferential side. Shrinkage rate increases.
　なお、内周側にＰＰを多く配合するには、例えば、上述したバインダ繊維と同様に、１枚の不織布の中で、内周側の方が多く分布するようにする方法と、ＰＰの配合量の異なる複数枚の不織布を厚み方向に重ねる方法とが考えられる。 In order to blend a large amount of PP on the inner peripheral side, for example, in the same manner as the binder fiber described above, a method of distributing more on the inner peripheral side in one nonwoven fabric, and a blending of PP A method of stacking a plurality of nonwoven fabrics having different amounts in the thickness direction is conceivable.
　また、このほか融点が異なる２種類の繊維のうち融点が高い繊維を外周側に配合すると共に融点の低い繊維を内周側に配合したうえで、融点が高い繊維の融点よりも低い温度で熱収縮させることでも、内周側を熱収縮させやすくすることができる。 In addition, among the two types of fibers having different melting points, a fiber having a high melting point is blended on the outer peripheral side and a fiber having a low melting point is blended on the inner peripheral side, and then heated at a temperature lower than the melting point of the fiber having a high melting point. By contracting, the inner peripheral side can be easily contracted by heat.
　ここで、保護部材２０を電線束１２ａに取り付ける様子について説明する。図５は、実施形態に係る保護部材２０を電線束１２ａに取り付ける様子を示す説明図である。 Here, how the protective member 20 is attached to the wire bundle 12a will be described. Drawing 5 is an explanatory view showing signs that protection member 20 concerning an embodiment is attached to electric wire bundle 12a.
　上述したように自然状態で保護部材２０は第１部分筒部２２と開閉片部３０との間があいているため、第１部分筒部２２に電線束１２ａを容易に挿入させることができる。より詳細には、ここでは、第１部分筒部２２が電線束１２ａの外径と略同じ内径を有する半筒状に形成されると共に開閉片部３０が第１部分筒部２２から接線方向に延びるように形成されているため、第１部分筒部２２と開閉片部３０との間の間隔（第１部分筒部２２の自由端側の端縁部と開閉片部３０との間隔）も、電線束１２ａの外径と略同じである。これにより、開閉片部３０及び第１部分筒部２２を開くことなく第１部分筒部２２に収容される電線１２全てを一度に第１部分筒部２２の開口に導くことができる。さらに、第１部分筒部２２を開くことなく第１部分筒部２２の開口に導かれた電線束１２ａを第１部分筒部２２に挿入することができる。 As described above, since the protection member 20 is in a natural state between the first partial cylinder portion 22 and the opening / closing piece portion 30, the wire bundle 12a can be easily inserted into the first partial cylinder portion 22. More specifically, here, the first partial cylindrical portion 22 is formed in a semi-cylindrical shape having an inner diameter substantially the same as the outer diameter of the wire bundle 12a, and the opening / closing piece 30 is tangentially extending from the first partial cylindrical portion 22. Since it is formed so as to extend, the distance between the first partial cylinder part 22 and the opening / closing piece part 30 (the distance between the edge part on the free end side of the first partial cylinder part 22 and the opening / closing piece part 30) is also included. The outer diameter of the wire bundle 12a is substantially the same. Thereby, all the electric wires 12 accommodated in the first partial cylinder part 22 can be guided to the opening of the first partial cylinder part 22 at a time without opening the opening / closing piece 30 and the first partial cylinder part 22. Furthermore, the wire bundle 12 a guided to the opening of the first partial cylinder part 22 can be inserted into the first partial cylinder part 22 without opening the first partial cylinder part 22.
　なお、第１部分筒部２２と開閉片部３０との間の間隔が電線束１２ａの外径よりも小さい寸法に設定されている場合、電線１２をわけて順番に挿入していってもよいし、開閉片部３０又は第１部分筒部２２を開いて第１部分筒部２２と開閉片部３０との間の間隔を電線束１２ａの外径以上にしてから、電線束１２ａを一度に挿入してもよい。開閉片部３０を開く場合、第１部分筒部２２と開閉片部３０との間の間隔が取っ掛りとなることによって開閉片部３０が開きやすい。 In addition, when the space | interval between the 1st partial cylinder part 22 and the opening-and-closing piece part 30 is set to the dimension smaller than the outer diameter of the wire bundle 12a, you may divide the electric wire 12 and insert in order. Then, after opening the opening / closing piece 30 or the first partial cylinder part 22 and setting the interval between the first partial cylinder part 22 and the opening / closing piece part 30 to be equal to or larger than the outer diameter of the electric wire bundle 12a, the electric wire bundle 12a is moved at a time. It may be inserted. When opening the opening / closing piece 30, the opening / closing piece 30 is easy to open because the interval between the first partial cylinder portion 22 and the opening / closing piece 30 becomes a handle.
　電線束１２ａを第１部分筒部２２の内部に収容した後は、開閉片部３０を閉じて、開閉片部３０の先端を第１部分筒部２２に重ねる。これにより、電線束１２ａの挿入に用いた開口が塞がれ、保護部材２０が電線束１２ａに取り付けられた状態となる。 After the wire bundle 12 a is accommodated in the first partial cylinder part 22, the opening / closing piece part 30 is closed and the tip of the opening / closing piece part 30 is overlapped with the first partial cylinder part 22. Thereby, the opening used for insertion of the electric wire bundle 12a is closed, and the protection member 20 is in a state attached to the electric wire bundle 12a.
　なお、開閉片部３０を閉じた後、開閉片部３０が閉じられた状態を維持可能となるように保護部材２０の周囲にテープ９０等の結束部材が巻付けられることが好ましい。この際、電線束１２ａに対して保護部材２０が位置決めされるように保護部材２０の長手方向端部と電線束１２ａとに亘るようにテープ９０が巻付けられることがより好ましい。この際、保護部材２０の長手方向中間部分にもテープ９０等が巻付けられてもよい。これにより、保護部材２０の口開きがより確実に抑制される。 In addition, after closing the opening / closing piece 30, it is preferable that a binding member such as a tape 90 is wound around the protective member 20 so that the closed state of the opening / closing piece 30 can be maintained. At this time, it is more preferable that the tape 90 is wound around the longitudinal end portion of the protection member 20 and the wire bundle 12a so that the protection member 20 is positioned with respect to the wire bundle 12a. At this time, the tape 90 or the like may be wound around the intermediate portion in the longitudinal direction of the protection member 20. Thereby, the opening of the protection member 20 is more reliably suppressed.
　なお、保護部材２０の取り付け方によっては、電線束１２ａがその周方向において全周で保護部材２０と接している場合もあり得るし、電線束１２ａと保護部材２０との間に隙間が設けられている場合もあり得る。 Depending on how the protection member 20 is attached, the wire bundle 12a may be in contact with the protection member 20 in the entire circumferential direction, and a gap is provided between the wire bundle 12a and the protection member 20. It may be.
　＜製造方法＞
　次に、保護部材２０の製造方法について説明する。図６は、実施形態に係る保護部材２０の製造法の一例を示す説明図である。ここでは、図６に示されるように、保護部材製造装置５０を用いて保護部材２０を製造する方法について説明する。 <Manufacturing method>
Next, the manufacturing method of the protection member 20 is demonstrated. Drawing 6 is an explanatory view showing an example of a manufacturing method of protection member 20 concerning an embodiment. Here, as shown in FIG. 6, a method of manufacturing the protective member 20 using the protective member manufacturing apparatus 50 will be described.
　ここで、保護部材製造装置５０の構成について説明しておく。 Here, the configuration of the protective member manufacturing apparatus 50 will be described.
　保護部材製造装置５０は、上流側シート搬送機構６０、加熱部７０及び成形部８０を備えている。また、保護部材製造装置５０は、必要に応じて冷却ファン５４を備える場合もある。 The protective member manufacturing apparatus 50 includes an upstream sheet conveying mechanism 60, a heating unit 70, and a forming unit 80. Moreover, the protective member manufacturing apparatus 50 may include a cooling fan 54 as necessary.
　図６が示す例では、成形部８０は基礎台５２に支持されている。また、加熱部７０が基礎台５２に直接支持されること、また、加熱部７０を介して成形部８０が基礎台５２に支持されることも考えられる。 In the example shown in FIG. 6, the molding part 80 is supported by the base 52. In addition, it is conceivable that the heating unit 70 is directly supported by the base 52, and that the forming unit 80 is supported by the base 52 via the heating 70.
　＜上流側シート搬送機構＞
　上流側シート搬送機構６０は、熱可塑性樹脂を含むシート状部材４０（ここでは、シート状の不織布）を予め定められた経路に沿って搬送する機構である。以下、シート状部材４０が搬送される経路のことを搬送経路Ｒ１と称する。加熱部７０、成形部８０は、搬送経路Ｒ１に沿う位置に配置されている。 <Upstream sheet transport mechanism>
The upstream sheet conveyance mechanism 60 is a mechanism that conveys the sheet-like member 40 (here, sheet-like nonwoven fabric) containing a thermoplastic resin along a predetermined path. Hereinafter, the path along which the sheet-like member 40 is transported is referred to as a transport path R1. The heating unit 70 and the molding unit 80 are disposed at positions along the transport path R1.
　上流側シート搬送機構６０は、搬送経路Ｒ１における加熱部７０の位置よりも上流側の位置に配置されている。上流側シート搬送機構６０は、シート状部材４０を加熱部７０の位置へ送り込む。 The upstream sheet transport mechanism 60 is disposed at a position upstream of the position of the heating unit 70 in the transport path R1. The upstream sheet conveying mechanism 60 feeds the sheet-like member 40 to the position of the heating unit 70.
　上流側シート搬送機構６０は、一対の送り込みローラ６２と送り込みローラ駆動部６４とを備えている。一対の送り込みローラ６２は、搬送経路Ｒ１における加熱部７０の位置よりも上流側の位置において、平坦なシート状部材４０を挟み込んで回転する部材である。図６が示す例では、上流側シート搬送機構６０は、搬送経路Ｒ１の方向に並んで配置された二対の送り込みローラ６２を備えている。 The upstream sheet conveying mechanism 60 includes a pair of feeding rollers 62 and a feeding roller driving unit 64. The pair of feed rollers 62 are members that rotate with the flat sheet-like member 40 interposed therebetween at a position upstream of the position of the heating unit 70 in the transport path R1. In the example shown in FIG. 6, the upstream sheet conveyance mechanism 60 includes two pairs of feeding rollers 62 arranged side by side in the direction of the conveyance path R1.
　送り込みローラ駆動部６４は、一対の送り込みローラ６２を回転させる駆動機構である。例えば、送り込みローラ駆動部６４は、モータとそのモータの回転力を一対の送り込みローラ６２に伝達するギア機構とを含む。 The feeding roller driving unit 64 is a driving mechanism that rotates the pair of feeding rollers 62. For example, the feed roller driving unit 64 includes a motor and a gear mechanism that transmits the rotational force of the motor to the pair of feed rollers 62.
　送り込みローラ駆動部６４が一対の送り込みローラ６２の両方を反対方向に回転させることの他、送り込みローラ駆動部６４が一対の送り込みローラ６２の一方のみを回転させることも考えられる。後者の場合、一対の送り込みローラ６２の一方がシート状部材４０を加熱部７０の側（下流側）へ搬送し、一対の送り込みローラ６２の他方は移動するシート状部材４０に接して従動する。 It is conceivable that the feed roller drive unit 64 rotates both the pair of feed rollers 62 in the opposite direction, and the feed roller drive unit 64 rotates only one of the pair of feed rollers 62. In the latter case, one of the pair of feeding rollers 62 conveys the sheet-like member 40 toward the heating unit 70 (downstream side), and the other of the pair of feeding rollers 62 is in contact with the moving sheet-like member 40 and is driven.
　一対の送り込みローラ６２は、例えば円柱状もしくは円筒状に形成されている。一対の送り込みローラ６２各々の外周面は、シート状部材４０に対する摩擦抵抗が高い材料で構成されていることが望ましい。例えば、一対の送り込みローラ６２各々の外周面が、エラストマーなどのゴム系材料で構成されていることが考えられる。 The pair of feeding rollers 62 are formed in a columnar shape or a cylindrical shape, for example. The outer peripheral surface of each of the pair of feeding rollers 62 is preferably made of a material having high frictional resistance against the sheet-like member 40. For example, it is conceivable that the outer peripheral surface of each of the pair of feeding rollers 62 is made of a rubber-based material such as an elastomer.
　＜加熱部＞
　加熱部７０は、搬送経路Ｒ１を移動中のシート状部材４０を加熱する装置である。加熱部７０は、例えば熱風送風機又は赤外線ヒータなどのように非接触でシート状部材４０を加熱する装置である。 <Heating section>
The heating unit 70 is a device that heats the sheet-like member 40 that is moving along the transport path R1. The heating unit 70 is a device that heats the sheet-like member 40 in a non-contact manner, such as a hot air blower or an infrared heater.
　加熱部７０は、熱可塑性樹脂を含むシート状部材４０を加熱することにより、シート状部材４０を塑性変形可能な程度に軟化させる。即ち、加熱部７０によって加熱されたシート状部材４０は、外力が加わって変形した後に冷却すると、冷却時の形状を維持する。 The heating unit 70 softens the sheet-like member 40 to such an extent that it can be plastically deformed by heating the sheet-like member 40 containing the thermoplastic resin. That is, when the sheet-like member 40 heated by the heating unit 70 is cooled after being deformed by an external force, it maintains the shape during cooling.
　なお、ここでは、加熱部７０は、シート状部材４０を幅方向に沿って全体的に加熱している。これにより、シート状部材４０のうち保護部材２０に成形する際に曲げられない部分（ここでは、開閉片部３０に成形される部分）も、シート状部材４０の剛性より大きい剛性を有するように成形される。もっとも、加熱部７０がシート状部材４０を幅方向に沿って全体的に加熱することは必須ではない。例えば、加熱部７０は、シート状部材４０から曲げて成形する部分（ここでは、第１部分筒部２２に成形される部分）のみを加熱することもあり得る。この場合、成形後の開閉片部３０は、シート状部材４０の剛性と同等かそれより若干大きい剛性を有する。 In addition, the heating part 70 is heating the sheet-like member 40 whole along the width direction here. As a result, a portion of the sheet-like member 40 that is not bent when being molded into the protection member 20 (here, a portion that is molded into the opening / closing piece 30) also has rigidity higher than that of the sheet-like member 40. Molded. But it is not essential for the heating part 70 to heat the sheet-like member 40 entirely along the width direction. For example, the heating unit 70 may heat only a portion that is bent from the sheet-like member 40 (here, a portion that is formed on the first partial tube portion 22). In this case, the molded opening / closing piece 30 has a rigidity equal to or slightly larger than the rigidity of the sheet-like member 40.
　＜成形部＞
　成形部８０は、搬送経路Ｒ１における加熱部７０の位置よりも下流側の位置に配置されている。成形部８０は、ここでは、型８２を含む。図７は、型８２を上流側から見た図である。図８は、型８２を下流側から見た図である。 <Molding part>
The forming unit 80 is disposed at a position downstream of the position of the heating unit 70 in the transport path R1. Here, the molding unit 80 includes a mold 82. FIG. 7 is a view of the mold 82 as viewed from the upstream side. FIG. 8 is a view of the mold 82 as seen from the downstream side.
　型８２は、加熱されたシート状部材４０を保護部材２０の形状に成形する成形面８４を有している。ここでは、型８２の本体部８２ａのうち上流側を向く面と下流側を向く面とを貫くように開けられた貫通孔８２ｈの内周面が成形面８４をなしている。この際、型８２の本体部８２ａは、上流側を向く面において、下面側が上面側よりも上流側に出っ張る態様で傾斜するように形成されている。このため、貫通孔８２ｈのうち上流側は上側が開いた溝状に形成され、貫通孔８２ｈのうち下流側は閉環状に形成されている。具体的には、成形面８４は、外側成形面８５と内側成形面８６とを有する。 The mold 82 has a molding surface 84 for molding the heated sheet-like member 40 into the shape of the protective member 20. Here, the inner peripheral surface of the through-hole 82h opened so as to penetrate the surface facing the upstream side and the surface facing the downstream side of the main body 82a of the mold 82 forms the molding surface 84. At this time, the main body portion 82a of the mold 82 is formed so as to be inclined on the surface facing the upstream side in such a manner that the lower surface side protrudes more upstream than the upper surface side. For this reason, the upstream side of the through hole 82h is formed in a groove shape whose upper side is open, and the downstream side of the through hole 82h is formed in a closed ring shape. Specifically, the molding surface 84 has an outer molding surface 85 and an inner molding surface 86.
　外側成形面８５は、シート状部材４０の両主面のうちシート状部材４０が保護部材２０に成形されたときに外周側面となる側の主面を支える。外側成形面８５のうち第１部分筒部２２を成形する部分は、搬送経路Ｒ１の上流側から下流側へ向かうほど、平坦面に近い形状から外周側面に沿う環状に近い形状へ徐々に変化する形状で形成されている。また、外側成形面８５のうち開閉片部３０を成形する部分は、上流側に誘い込みの傾斜が設けられる以外は、上流側から下流側へ向けて略平坦面状に形成されている。 Outer molding surface 85 supports the main surface on the side that becomes the outer peripheral side surface when sheet-shaped member 40 is molded into protective member 20 out of both main surfaces of sheet-shaped member 40. The portion of the outer molding surface 85 that molds the first partial cylindrical portion 22 gradually changes from a shape close to a flat surface to a shape close to an annular shape along the outer peripheral side as it goes from the upstream side to the downstream side of the transport path R1. It is formed in a shape. Moreover, the part which shape | molds the opening-and-closing piece part 30 among the outer side shaping | molding surfaces 85 is formed in the substantially flat surface shape toward the downstream from the upstream except the inclination of the induction | guidance | derivation being provided in the upstream.
　図６が示す例では、型８２の外側成形面８５のうち第１部分筒部２２を成形する部分における上流側の端部は、第１部分筒部２２の外周側面よりも曲率半径が大きく形成されている。一方、型８２の外側成形面８５のうち第１部分筒部２２を成形する部分における下流側の端部は、外周側面の曲率半径と同等もしくは外周側面の曲率半径よりも小さい曲率半径に形成されている。そして、外側成形面８５は、上流側の端部から下流側の端部へ向かうほど徐々に曲率半径が小さくなる形状で形成されている。 In the example shown in FIG. 6, the upstream end portion of the outer molding surface 85 of the mold 82 where the first partial cylindrical portion 22 is molded has a larger radius of curvature than the outer peripheral side surface of the first partial cylindrical portion 22. Has been. On the other hand, the downstream end portion of the outer molding surface 85 of the mold 82 where the first partial cylindrical portion 22 is molded is formed with a radius of curvature equal to or smaller than the radius of curvature of the outer peripheral side surface. ing. The outer molding surface 85 is formed in a shape in which the radius of curvature gradually decreases from the upstream end to the downstream end.
　内側成形面８６は、シート状部材４０が保護部材２０に成形された時の内周側面となる側の主面を成形する。内側成形面８６は、外側成形面８５によって曲げられたシート状の不織布の移動を規制する。内側成形面８６は、搬送経路Ｒ１の上流側から下流側へ向かって一定の形状に形成されている。 The inner molding surface 86 molds the main surface on the side that becomes the inner peripheral side surface when the sheet-like member 40 is molded into the protection member 20. The inner molding surface 86 regulates the movement of the sheet-like nonwoven fabric bent by the outer molding surface 85. The inner molding surface 86 is formed in a certain shape from the upstream side to the downstream side of the transport path R1.
　型８２は、その外側成形面８５を摺動するシート状部材４０を平坦に近い形状から成形品の形状に近い形状へ徐々に変形させる。これにより、加熱されたシート状部材４０は、円滑に型８２を通過可能となる。 The mold 82 gradually deforms the sheet-like member 40 sliding on the outer molding surface 85 from a shape close to flat to a shape close to the shape of the molded product. Thereby, the heated sheet-like member 40 can pass through the mold 82 smoothly.
　従って、型８２のうち下流側における外側成形面８５と内側成形面８６との間の空間がシート状部材４０を保護部材２０の形状に拘束する成形通路８８をなしており、型８２のうち上流側における外側成形面８５と内側成形面８６との間の空間がシート状部材４０を成形通路８８に案内する（つまり、シート状部材４０を徐々に保護部材２０の形状に近づける）案内通路８７をなしている。ここでは、貫通孔８２ｈのうち上流側における溝状に形成された部分が案内通路８７であり、下流側における閉環状に形成された部分が成形通路８８である。 Accordingly, a space between the outer molding surface 85 and the inner molding surface 86 on the downstream side of the mold 82 forms a molding passage 88 that restrains the sheet-like member 40 to the shape of the protection member 20. A space between the outer molding surface 85 and the inner molding surface 86 on the side guides the sheet-like member 40 to the molding passage 88 (that is, the sheet-like member 40 gradually approaches the shape of the protection member 20). There is no. Here, the part formed in the groove shape on the upstream side of the through hole 82h is the guide passage 87, and the part formed in the closed ring shape on the downstream side is the forming passage 88.
　型８２のうち案内通路８７を構成する部分がヒータなどの熱源によって加熱されない場合、即ち、型８２のうち案内通路８７を構成する部分の温度が加熱されたシート状部材４０の温度よりも低い場合、シート状部材４０は案内通路８７の内周面と接触することにより冷却される。しかしながら、シート状部材４０が成形通路８８に達する前に硬化すると、シート状部材４０を所望の形状に成形することができなくなる。 When the portion constituting the guide passage 87 of the mold 82 is not heated by a heat source such as a heater, that is, when the temperature of the portion constituting the guide passage 87 of the die 82 is lower than the temperature of the heated sheet-like member 40. The sheet-like member 40 is cooled by contacting the inner peripheral surface of the guide passage 87. However, if the sheet-like member 40 is cured before reaching the forming passage 88, the sheet-like member 40 cannot be formed into a desired shape.
　従って、型８２のうち案内通路８７を構成する部分との熱交換によるシート状部材４０の温度降下は大きくないことが望ましい。例えば、型８２のうち案内通路８７を構成する部分が、型８２のうち成形通路８８を構成する部分の材料に比べてシート状部材４０及び空気との間の熱伝達率が小さい材料で構成されることが考えられる。また、型８２のうち案内通路８７を構成する部分が、不図示のヒータ又は熱風送風機などの加熱手段によって予め定められた温度に維持されることも考えられる。 Therefore, it is desirable that the temperature drop of the sheet-like member 40 due to heat exchange with the portion constituting the guide passage 87 of the mold 82 is not large. For example, the portion of the mold 82 that constitutes the guide passage 87 is made of a material that has a smaller heat transfer coefficient between the sheet-like member 40 and air than the material of the portion of the die 82 that constitutes the molding passage 88. It can be considered. It is also conceivable that the portion of the mold 82 constituting the guide passage 87 is maintained at a predetermined temperature by a heating means such as a heater (not shown) or a hot air blower.
　加熱されたシート状部材４０は、その両主面各々が外側成形面８５と内側成形面８６との各々に接触しつつ成形通路８８を通過する。従って、シート状部材４０における成形通路８８を通過する部分は成形通路８８と同じ形状、即ち、成形後の保護部材２０の形状となる。 The heated sheet-like member 40 passes through the molding passage 88 while both main surfaces thereof are in contact with the outer molding surface 85 and the inner molding surface 86, respectively. Accordingly, the portion of the sheet-like member 40 that passes through the molding passage 88 has the same shape as the molding passage 88, that is, the shape of the protective member 20 after molding.
　また、型８２のうち成形通路８８を構成する部分は、自然放熱により、又は強制冷却されることによって成形通路８８に入る直前のシート状部材４０の温度よりも低い温度に維持されている。そのため、型８２のうち成形通路８８を構成する部分は、シート状部材４０との熱交換によってシート状部材４０を冷却する。 Further, the portion of the mold 82 that constitutes the molding passage 88 is maintained at a temperature lower than the temperature of the sheet-like member 40 immediately before entering the molding passage 88 by natural heat dissipation or forced cooling. Therefore, the portion of the mold 82 that constitutes the forming passage 88 cools the sheet-like member 40 by heat exchange with the sheet-like member 40.
　シート状部材４０の幅方向一方側端部４１における成形通路８８を通過する部分は、半円弧状に拘束された状態で冷却され、半円弧状に曲がった状態のまま硬化する。即ち、シート状部材４０における成形通路８８を通過する部分は、半円弧状に成形される。従って、移動中のシート状部材４０の幅方向一方側端部４１における、成形部８０の位置よりも搬送経路Ｒ１の下流側の部分は、半筒状に成形された状態となる。その半筒状に成形された部分が保護部材２０の第１部分筒部２２である。 The portion of the sheet-like member 40 that passes through the forming passage 88 at the one end 41 in the width direction is cooled while being constrained in a semicircular arc shape, and is cured while being bent in a semicircular arc shape. That is, the portion of the sheet-like member 40 that passes through the forming passage 88 is formed in a semicircular arc shape. Accordingly, the portion of the sheet-like member 40 that is moving in the width direction one side end portion 41 on the downstream side of the conveyance path R1 from the position of the forming portion 80 is formed in a semi-cylindrical shape. The portion formed into the semi-cylindrical shape is the first partial cylindrical portion 22 of the protection member 20.
　型８２のうち成形通路８８を構成する部分は、シート状部材４０及び空気との間の熱伝達率が高い材料で構成されていることが望ましい。例えば、型８２が、ステンレス、鉄又は銅などの金属の部材であることが考えられる。 It is desirable that the portion of the mold 82 constituting the molding passage 88 is made of a material having a high heat transfer coefficient between the sheet-like member 40 and air. For example, it is conceivable that the mold 82 is a metal member such as stainless steel, iron, or copper.
　また、型８２の放熱性を高めるため、型８２のうち成形通路８８を構成する部分の内側面以外の面に、放熱フィンが形成されることも考えられる。 Further, in order to improve the heat dissipation of the mold 82, it is also conceivable that heat radiation fins are formed on the surface of the mold 82 other than the inner surface of the portion constituting the molding passage 88.
　図６が示す例では、型８２のうち成形通路８８を構成する部分は、冷却ファン５４によって強制空冷されている。 In the example shown in FIG. 6, the portion of the mold 82 that constitutes the molding passage 88 is forcibly air-cooled by the cooling fan 54.
　上記保護部材製造装置５０を用いて、保護部材２０を製造するには、例えば、以下のようにする。 In order to manufacture the protective member 20 using the protective member manufacturing apparatus 50, for example, the following is performed.
　即ち、まずは、シート状部材４０は、上流側シート搬送機構６０によって搬送される。具体的には、シート状部材４０のうち第１部分筒部２２に成形される部分を上流方向から見て左側に配置し、開閉片部３０に成形される部分を上流側から見て右側に配置する。さらに、第１部分筒部２２に成形される部分のうち熱収縮率の大きい一方側主面が基礎台５２の上面と接しない側に位置し、シート状部材４０のうち熱収縮率の小さい他方側主面が基礎台５２の上面と接した状態で搬送されるようにする。 That is, first, the sheet-like member 40 is conveyed by the upstream sheet conveying mechanism 60. Specifically, a portion of the sheet-like member 40 that is formed on the first partial cylinder portion 22 is disposed on the left side when viewed from the upstream direction, and a portion that is molded on the opening / closing piece portion 30 is disposed on the right side when viewed from the upstream side. Deploy. Furthermore, the one side main surface having a large heat shrinkage ratio among the portions formed in the first partial cylindrical portion 22 is located on the side not in contact with the upper surface of the base 52, and the other one having a small heat shrinkage ratio among the sheet-like members 40. The side main surface is conveyed in contact with the upper surface of the base 52.
　次に、保護部材製造装置５０の加熱部７０によって、搬送経路Ｒ１に沿って移動中の熱可塑性樹脂を含むシート状部材４０を加熱する。この際、シート状部材４０の一方側主面（基礎台５２の上面と接していない方の主面）の熱収縮率がシート状部材４０の他方側主面の熱収縮率よりも大きく設定されているため、加熱後のシート状部材４０は、一方側主面を内側にして収縮しやすい。 Next, the sheet-like member 40 containing the thermoplastic resin that is moving along the conveyance path R1 is heated by the heating unit 70 of the protective member manufacturing apparatus 50. At this time, the thermal contraction rate of the one-side main surface of the sheet-like member 40 (the main surface not in contact with the upper surface of the base 52) is set to be larger than the thermal contraction rate of the other-side main surface of the sheet-like member 40. Therefore, the heated sheet-like member 40 tends to shrink with the one-side main surface as the inner side.
　なお、上述したように、シート状部材４０のうち第１部分筒部２２に成形される部分のみを加熱することも考えられる。 Note that, as described above, it is also conceivable to heat only the portion of the sheet-like member 40 that is formed on the first partial cylinder portion 22.
　次に、搬送経路Ｒ１における加熱部７０の位置よりも下流側の位置に配置された案内通路８７を用いて成形される。ここでは、加熱部７０によって加熱されたシート状部材４０を平坦に近い形状から成形通路８８の形状に近い形状へ徐々に変形させる。より具体的には、搬送経路Ｒ１に沿って搬送されるシート状部材４０を案内通路８７の外側成形面８５に摺動させることによってシート状部材４０を変形させる。 Next, molding is performed using the guide passage 87 disposed at a position downstream of the position of the heating unit 70 in the transport path R1. Here, the sheet-like member 40 heated by the heating unit 70 is gradually deformed from a shape close to flat to a shape close to the shape of the forming passage 88. More specifically, the sheet-like member 40 is deformed by sliding the sheet-like member 40 conveyed along the conveyance path R <b> 1 on the outer molding surface 85 of the guide passage 87.
　次に、搬送経路Ｒ１における加熱部７０及び案内通路８７の位置よりも下流側の位置に配置された成形通路８８を用いて成形される。ここでは、シート状部材４０を、成形通路８８を通過させることで、シート状部材４０における成形通路８８を通過する部分を成形品の形状に拘束しつつ冷却する。 Next, molding is performed using the molding passage 88 disposed at a position downstream of the positions of the heating unit 70 and the guide passage 87 in the transport path R1. Here, by allowing the sheet-like member 40 to pass through the molding passage 88, the portion of the sheet-like member 40 passing through the molding passage 88 is cooled while being constrained to the shape of the molded product.
　そして、シート状部材４０は、成形通路８８を通過するときに型８２との熱交換によって冷却され、成形通路８８と同じ形状で硬化する。従って、搬送されているシート状部材４０における、成形通路８８の位置よりも搬送経路Ｒ１の下流側の部分が保護部材２０となっている。 The sheet-like member 40 is cooled by heat exchange with the mold 82 when passing through the molding passage 88 and is cured in the same shape as the molding passage 88. Therefore, the portion of the sheet-like member 40 being conveyed, which is downstream of the conveyance path R1 from the position of the forming passage 88, serves as the protection member 20.
　以上のようにして保護部材製造装置５０を用いて製造された一連の保護部材２０は、一単位分の保護部材２０として必要な長さにカットされて用いられる。即ち、保護部材製造装置５０は、複数単位分の保護部材２０を連続的に製造することができる。もちろん、一単位分ごとにシート状部材４０が保護部材２０に成形されてもよい。 The series of protective members 20 manufactured using the protective member manufacturing apparatus 50 as described above are cut into a necessary length as a single unit of the protective member 20 and used. That is, the protection member manufacturing apparatus 50 can continuously manufacture the protection members 20 for a plurality of units. Of course, the sheet-like member 40 may be formed on the protective member 20 for each unit.
　もちろん、保護部材２０が上記保護部材製造装置５０を用いて製造されることは必須ではなく、保護部材２０は、作業者の手作業により、又は、他の装置等により製造される場合もあり得る。 Of course, it is not essential that the protective member 20 is manufactured using the protective member manufacturing apparatus 50, and the protective member 20 may be manufactured manually by an operator, or by another apparatus or the like. .
　第１実施形態に係る保護部材２０によると、シート状部材４０の幅方向一方側端部４１を曲げて形成された第１部分筒部２２と、第１部分筒部２２の縁部からシート状部材４０の幅方向他方側端部４２に亘る部分であって、自然状態で第１部分筒部２２との間に開口を形成可能に延び、第１部分筒部２２に線状体を挿入した後に第１部分筒部２２の内周側又は外周側に重なるように曲げ可能に形成された開閉片部３０とを備える。このため、自然状態で、開口を通して容易に第１部分筒部２２内に電線等を挿入することができる。また、電線挿入後に第１部分筒部２２は部分筒形状を維持しているため、電線挿入後の取扱性の低下が抑えられる。 According to the protective member 20 according to the first embodiment, the first partial cylinder part 22 formed by bending the width direction one end 41 of the sheet-like member 40, and the sheet form from the edge of the first partial cylinder part 22. The portion extending across the width direction other side end portion 42 of the member 40, extends in a natural state so that an opening can be formed between the first partial cylinder portion 22, and a linear body is inserted into the first partial cylinder portion 22. The opening / closing piece 30 is formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylinder part 22 later. For this reason, an electric wire etc. can be easily inserted in the 1st partial cylinder part 22 through opening in a natural state. Moreover, since the 1st partial cylinder part 22 is maintaining the partial cylinder shape after electric wire insertion, the fall of the handleability after electric wire insertion is suppressed.
　また、第１部分筒部２２が半筒に曲げて形成されているため、第１部分筒部２２が半筒未満に曲げられる場合に比べて電線の挿入性の低下を抑えつつ、電線挿入後の取扱性を向上させることができる。 Moreover, since the 1st partial cylinder part 22 is bent and formed in a half cylinder, compared with the case where the 1st partial cylinder part 22 is bent to less than a half cylinder, it suppresses the fall of the insertion property of an electric wire, and after electric wire insertion Can be improved.
　また、開閉片部３０は、自然状態で平板状を維持可能に形成されているため、開閉片部３０に多少の外力がかかっても第１部分筒部２２の開口を塞ぐような変形がし難くなる。これにより、電線等の挿入性の向上につながる。 Further, since the opening / closing piece 30 is formed so as to be able to maintain a flat plate shape in a natural state, even if a slight external force is applied to the opening / closing piece 30, the opening / closing piece 30 is deformed so as to close the opening of the first partial cylinder portion 22. It becomes difficult. Thereby, it leads to the improvement of insertability, such as an electric wire.
　また、シート状部材４０が不織布を材料として形成されているため、シート状部材４０から保護部材２０を容易に製造することができる。 Moreover, since the sheet-like member 40 is formed using a nonwoven fabric as a material, the protective member 20 can be easily manufactured from the sheet-like member 40.
　また、延在方向に沿って送られている途中のシート状部材４０が加熱された状態で型８２に通されることで、自然状態の形状を維持可能に形成されているため、シート状部材４０から保護部材２０を連続的に製造することができる。 In addition, since the sheet-like member 40 being sent along the extending direction is passed through the mold 82 in a heated state, the sheet-like member is formed so as to be able to maintain the shape in the natural state. The protective member 20 can be continuously manufactured from 40.
　また、内周側の部分が外周側の部分に比べて硬くなるように形成されているため、電線１２が保護部材２０の内周側の部分で確実に保護される。また、外周側の部分が内周側の部分と比べて柔らかいため、保護部材２０が周囲の部材と干渉した際に、音の発生を抑制することができる。 Further, since the inner peripheral portion is formed so as to be harder than the outer peripheral portion, the electric wire 12 is reliably protected by the inner peripheral portion of the protection member 20. In addition, since the outer peripheral portion is softer than the inner peripheral portion, it is possible to suppress the generation of sound when the protective member 20 interferes with surrounding members.
　また、シート状部材４０の第１部分筒部２２のうち丸められた状態で内周側に位置する部分は、外周側に位置する部分に比べて熱収縮率が大きくなるように設定されているため、シート状部材４０に熱をかけることで、シート状部材４０が容易に丸まる。これにより、シート状部材４０から保護部材２０を形成しやすくなる。 Moreover, the part located in the inner peripheral side in the rolled state among the 1st partial cylinder parts 22 of the sheet-like member 40 is set so that a thermal contraction rate may become large compared with the part located in the outer peripheral side. Therefore, the sheet-like member 40 is easily rounded by applying heat to the sheet-like member 40. Thereby, it becomes easy to form the protection member 20 from the sheet-like member 40.
　また、開閉片部３０は、第１部分筒部２２の周方向において４分の１周分以上４分の３周分以下の範囲で重なっているため、開閉片部３０を閉じる作業性の低下を抑えつつ、電線１２のはみ出しをより確実に抑制することができる。 Moreover, since the opening / closing piece part 30 overlaps in the circumferential direction of the 1st partial cylinder part 22 in the range of 1/4 turn or more and 3/4 turn or less, the workability | operativity which closes the opening / closing piece part 30 falls. The protrusion of the electric wire 12 can be more reliably suppressed while suppressing the above.
　｛第２実施形態｝
　第２実施形態に係る保護部材２０Ａについて説明する。図９は、第２実施形態に係る保護部材２０Ａ及びこれを備える保護部材付電線１０Ａを示す側面図である。なお、本実施の形態の説明において、第１実施形態で説明したものと同様構成要素については同一符号を付してその説明を省略する。 {Second Embodiment}
A protective member 20A according to the second embodiment will be described. FIG. 9 is a side view showing a protective member 20A according to the second embodiment and a protective member-equipped electric wire 10A including the same. In the description of the present embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　第２実施形態に係る保護部材２０Ａは、開閉片部３０Ａの形状が第１実施形態に係る保護部材２０の開閉片部３０の形状とは異なる。 20 A of protection members which concern on 2nd Embodiment differ in the shape of the opening-and-closing piece part 30A from the shape of the opening-and-closing piece part 30 of the protection member 20 which concerns on 1st Embodiment.
　具体的には、開閉片部３０Ａは、第１部分筒部２２側に曲げられている。そして、開閉片部３０Ａは、自然状態で第１部分筒部２２の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されている。この際、ここでは、開閉片部３０Ａは、第１部分筒部２２との連結部分からの先端にいくにつれて、曲率半径が段階的に大きくなるように形成されている。もっとも、開閉片部は、第１部分筒部２２との連結部分から先端にかけて一定の曲率半径で形成されていてもよい。 Specifically, the opening / closing piece 30A is bent toward the first partial cylindrical portion 22 side. The opening / closing piece 30A is formed so as to be able to maintain a plate shape having a radius of curvature larger than the radius of curvature of the first partial cylinder portion 22 in a natural state. In this case, the opening / closing piece 30A is formed such that the radius of curvature gradually increases as it goes to the tip from the connecting portion with the first partial cylinder portion 22. However, the opening / closing piece portion may be formed with a constant radius of curvature from the connecting portion with the first partial cylinder portion 22 to the tip.
　このような保護部材２０Ａも、型８２の形状を変えることで、第１実施形態に係る保護部材２０と同様に保護部材製造装置５０を用いて製造することができる。具体的には、型の外側成形面のうち開閉片部３０Ａを成形する部分における上流側の端部が、開閉片部３０Ａの外周側面よりも曲率半径が大きく形成される。一方、型の外側成形面のうち開閉片部３０Ａを成形する部分における下流側の端部は、開閉片部３０Ａの外周側面の曲率半径と同等もしくは外周側面の曲率半径よりも小さい曲率半径に形成される。外側成形面は、上流側の端部から下流側の端部へ向かうほど徐々に曲率半径が小さくなる形状で形成される。また、型の内側成形面は、上流側の端部から下流側の端部へかけて、保護部材２０Ａの内周側面と同様の形状で一定に形成される。これらより、型８２の形状を変えることで保護部材製造装置５０を用いて保護部材２０Ａを製造することができる。 Such a protective member 20A can also be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82. Specifically, the upstream end portion of the portion that molds the opening / closing piece 30A in the outer molding surface of the mold is formed to have a larger radius of curvature than the outer peripheral side surface of the opening / closing piece 30A. On the other hand, the downstream end portion of the outer molding surface of the mold in which the opening / closing piece portion 30A is formed is formed to have a curvature radius equal to or smaller than the curvature radius of the outer peripheral side surface of the opening / closing piece portion 30A. Is done. The outer molding surface is formed in a shape in which the radius of curvature gradually decreases from the upstream end to the downstream end. Further, the inner molding surface of the mold is uniformly formed in the same shape as the inner peripheral side surface of the protective member 20A from the upstream end to the downstream end. Thus, the protective member 20A can be manufactured using the protective member manufacturing apparatus 50 by changing the shape of the mold 82.
　第２実施形態に係る保護部材２０Ａによると、開閉片部３０Ａが第１部分筒部２２側に曲げられているため、保護部材２０Ａが単体として存在する際にその外形を小さくすることができる。また、開閉片部３０Ａが第１部分筒部２２側に曲げられているため、保護部材２０Ａが電線束１２ａに取り付けられた際に、開閉片部３０Ａの先端がめくれにくくなる。 According to the protective member 20A according to the second embodiment, since the opening / closing piece 30A is bent toward the first partial cylindrical portion 22, the outer shape of the protective member 20A can be reduced when the protective member 20A exists as a single body. In addition, since the opening / closing piece 30A is bent toward the first partial cylinder portion 22, when the protective member 20A is attached to the wire bundle 12a, the tip of the opening / closing piece 30A is difficult to turn.
　｛第３実施形態｝
　第３実施形態に係る保護部材２０Ｂについて説明する。図１０は、第３実施形態に係る保護部材２０Ｂ及びこれを備える保護部材付電線１０Ｂを示す側面図である。なお、本実施の形態の説明において、これまでの実施形態で説明したものと同様構成要素については同一符号を付してその説明を省略する。 {Third embodiment}
The protection member 20B according to the third embodiment will be described. FIG. 10 is a side view showing a protective member 20B according to the third embodiment and a protective member-equipped electric wire 10B having the same. In the description of the present embodiment, the same components as those described in the previous embodiments are denoted by the same reference numerals, and the description thereof is omitted.
　第３実施形態に係る保護部材２０Ｂは、第１部分筒部２２Ｂの形状が第１実施形態に係る保護部材２０の第１部分筒部２２の形状とは異なる。 Protective member 20B according to the third embodiment is different from the shape of first partial cylindrical portion 22 of protective member 20 according to the first embodiment in the shape of first partial cylindrical portion 22B.
　具体的には、第１部分筒部２２Ｂは、４分の３円筒状に形成されている。これにより、第１部分筒部２２Ｂに電線束１２ａを挿入した後、電線束１２ａが第１部分筒部２２Ｂから抜けそうになった場合に、電線束１２ａが第１部分筒部２２Ｂの端縁部に引っ掛かり抜けにくくなる。この際、開閉片部３０は、第１部分筒部２２Ｂの一方側端縁部からその端縁部における接線方向に延びるように形成されているが、当該接線方向よりも内側又は外側に延びるように形成されていてもよい。 Specifically, the first partial cylinder portion 22B is formed in a three-quarter cylindrical shape. Thereby, after inserting the wire bundle 12a into the first partial tube portion 22B, when the wire bundle 12a is about to come out of the first partial tube portion 22B, the wire bundle 12a is an edge of the first partial tube portion 22B. It becomes difficult to get caught in the part. At this time, the opening / closing piece 30 is formed so as to extend from the one side edge of the first partial cylinder 22B in the tangential direction at the edge, but extends inward or outward from the tangential direction. It may be formed.
　この際、第１部分筒部２２Ｂが第１部分筒部２２よりも大きい筒状に形成されているため、第１実施形態と同様に開閉片部３０Ｂを第１部分筒部２２Ｂの外側に４分の１周重ねるように開閉片部３０Ｂが設けられている場合に、シート状部材４０の幅方向における開閉片部３０Ｂの寸法は開閉片部３０の寸法よりも短くて済む。これにより、保護部材２０Ｂが単体として存在する場合の保護部材２０Ｃの外形を小さく抑えることができると共に開閉片部３０を閉じる作業が容易になる。 At this time, since the first partial cylinder part 22B is formed in a cylindrical shape larger than the first partial cylinder part 22, the open / close piece 30B is arranged on the outside of the first partial cylinder part 22B as in the first embodiment. When the opening / closing piece 30B is provided so as to overlap one minute, the dimension of the opening / closing piece 30B in the width direction of the sheet-like member 40 may be shorter than the dimension of the opening / closing piece 30. As a result, the outer shape of the protective member 20C when the protective member 20B exists as a single unit can be kept small, and the operation of closing the open / close piece 30 is facilitated.
　このような保護部材２０Ｂも、型８２の形状を変えることで、第１実施形態に係る保護部材２０と同様に保護部材製造装置５０を用いて製造することができる。具体的には、例えば、型の外側成形面のうち第１部分筒部２２Ｂを成形する部分における下流側の端部が４分の３円弧状に形成され、上流側の端部から下流側の端部へ向かうほど徐々に曲率半径が小さくなる形状で形成される。また、例えば、上記第１実施形態に係る型８２において、第１部分筒部２２側はそのままで、開閉片部３０のうち第１部分筒部２２と連なる部分を成形する部分を４分の１円弧状に形成されていてもよい。これらより、型８２の形状を変えることで保護部材製造装置５０を用いて保護部材２０を製造することができる。 Such a protective member 20B can be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82. Specifically, for example, the downstream end of the portion forming the first partial cylinder portion 22B in the outer molding surface of the mold is formed in a three-quarter arc shape, and the downstream end from the upstream end is formed. The curvature radius gradually decreases toward the end portion. Further, for example, in the mold 82 according to the first embodiment, the first partial cylinder part 22 side is left as it is, and a part of the open / close piece 30 that forms the part connected to the first partial cylinder part 22 is a quarter. It may be formed in an arc shape. From these, the protection member 20 can be manufactured using the protection member manufacturing apparatus 50 by changing the shape of the mold 82.
　第３実施形態に係る保護部材２０Ｂによると、第１部分筒部２２Ｂが４分の３筒以上に曲げて形成されているため、第１部分筒部２２Ｂが４分の３筒未満に曲げられる場合に比べて電線挿入後の取扱性を向上させることができる。 According to the protection member 20B according to the third embodiment, since the first partial cylinder portion 22B is formed by being bent into three or more quarters, the first partial cylinder 22B is bent to less than three quarters. Compared with the case, the handleability after inserting the electric wire can be improved.
　｛第４実施形態｝
　第４実施形態に係る保護部材２０Ｃについて説明する。図１１は、第４実施形態に係る保護部材２０Ｃ及びこれを備える保護部材付電線１０Ｃを示す側面図である。なお、本実施の形態の説明において、これまでの実施形態で説明したものと同様構成要素については同一符号を付してその説明を省略する。 {Fourth embodiment}
A protective member 20C according to the fourth embodiment will be described. FIG. 11: is a side view which shows 20 C of protection members which concern on 4th Embodiment, and 10C of electric wires with a protection member provided with this. In the description of the present embodiment, the same components as those described in the previous embodiments are denoted by the same reference numerals, and the description thereof is omitted.
　第４実施形態に係る保護部材２０Ｃは、開閉片部３０Ｃの形状が第１実施形態に係る保護部材２０の開閉片部３０の形状とは異なる。 Protective member 20C according to the fourth embodiment is different in the shape of opening / closing piece 30C from the shape of opening / closing piece 30 of protection member 20 according to the first embodiment.
　具体的には、開閉片部３０Ｃは、第２部分筒部３２と、連結部３６とを含む。 Specifically, the opening / closing piece portion 30 </ b> C includes a second partial cylinder portion 32 and a connecting portion 36.
　第２部分筒部３２は、シート状部材４０の幅方向他方側端部４２を第１部分筒部２２と同じ曲率半径で第１部分筒部２２側に曲げて形成されている。第２部分筒部３２が第１部分筒部２２側に曲げられて形成されているため、保護部材２０を電線束１２ａに取り付けた際に第２部分筒部３２がめくれにくくなる。 The second partial cylindrical portion 32 is formed by bending the widthwise other side end portion 42 of the sheet-like member 40 toward the first partial cylindrical portion 22 side with the same radius of curvature as the first partial cylindrical portion 22. Since the 2nd partial cylinder part 32 is bent and formed in the 1st partial cylinder part 22 side, when attaching the protection member 20 to the wire bundle 12a, the 2nd partial cylinder part 32 becomes difficult to turn.
　ここでは、第２部分筒部３２は、半筒（半円筒）状に形成されているが、半筒未満であってもよいし、半筒より大きくてもよい。第２部分筒部３２が半筒より大きい場合、開環状に形成されていることが好ましい。第２部分筒部３２は、半筒以上に形成されていることにより、第１部分筒部２２に電線束１２ａを挿入した後、第２部分筒部３２を電線束１２ａ及び第１部分筒部２２の外側に被せることで、第２部分筒部３２が電線束１２ａ及び第１部分筒部２２から抜けにくくなる。一方、第２部分筒部３２が半筒以下に形成されていることにより、第２部分筒部３２を電線束１２ａ及び第１部分筒部２２の外側に被せる際に、第２部分筒部３２を広げる必要がなくなり、取付易さが低下することを抑えることができる。これらより、ここでは、第２部分筒部３２は半筒に形成されている。 Here, although the 2nd partial cylinder part 32 is formed in the half cylinder (half cylinder) shape, it may be less than a half cylinder and may be larger than a half cylinder. When the 2nd partial cylinder part 32 is larger than a half cylinder, it is preferable that it is formed in the open ring shape. Since the second partial cylinder part 32 is formed in a half cylinder or more, after inserting the wire bundle 12a into the first partial cylinder part 22, the second partial cylinder part 32 is replaced with the electric wire bundle 12a and the first partial cylinder part. By covering the outer side of the second portion 22, the second partial cylinder portion 32 is less likely to come out of the wire bundle 12 a and the first partial cylinder portion 22. On the other hand, since the second partial cylinder part 32 is formed in a half cylinder or less, the second partial cylinder part 32 is provided when the second partial cylinder part 32 is placed outside the wire bundle 12a and the first partial cylinder part 22. Therefore, it is possible to prevent the ease of installation from being reduced. From these, the 2nd partial cylinder part 32 is formed in the half cylinder here.
　連結部３６は、自然状態で第１部分筒部２２と第２部分筒部３２との間に間隔があくように第１部分筒部２２と第２部分筒部３２とをつなぐ部分である。ここでは、連結部３６は、平板状に形成されている。この際、連結部３６は、第１部分筒部２２の一方側端縁部からその端縁部における接線方向に延びるように形成されている。また、連結部３６は、第２部分筒部３２の一方側端縁部からその端縁部における接線方向に延びるように形成されている。このことと、第１部分筒部２２及び第２部分筒部３２が共に半円筒状に形成されていることにより、連結部３６の寸法が、自然状態における第１部分筒部２２と第２部分筒部３２との間の間隔寸法となっている。もっとも連結部は、第１部分筒部２２又は第２部分筒部３２の端縁部における接線方向よりも内側又は外側に延びるように形成されていてもよい。 The connecting portion 36 is a portion that connects the first partial cylindrical portion 22 and the second partial cylindrical portion 32 so that there is a gap between the first partial cylindrical portion 22 and the second partial cylindrical portion 32 in a natural state. Here, the connecting portion 36 is formed in a flat plate shape. At this time, the connecting portion 36 is formed so as to extend in a tangential direction at one end edge portion of the first partial cylinder portion 22. Further, the connecting portion 36 is formed so as to extend in a tangential direction at one end edge portion of the second partial cylinder portion 32. By this and the 1st partial cylinder part 22 and the 2nd partial cylinder part 32 being formed in semi-cylindrical shape, the dimension of the connection part 36 is the 1st partial cylinder part 22 and 2nd part in a natural state. The distance between the cylinder portion 32 is set. But the connection part may be formed so that it may extend inward or outward rather than the tangential direction in the edge part of the 1st partial cylinder part 22 or the 2nd partial cylinder part 32. FIG.
　また、連結部３６は、自然状態で平板状を維持可能に設けられている。これにより、自然状態で、保護部材２０Ｃに多少の外力が加わっても開閉片部３０Ｃが、第１部分筒部２２の開口を塞ぐような変形をしにくくなる。なお、連結部は、第１部分筒部２２よりも大きい曲率半径を有するように曲げて形成されると共に、自然状態でその形状を維持可能に形成されていてもよい。 Further, the connecting portion 36 is provided so as to be able to maintain a flat shape in a natural state. Thereby, even if some external force is applied to the protective member 20C in a natural state, the opening / closing piece 30C is unlikely to be deformed so as to close the opening of the first partial cylinder portion 22. The connecting portion may be formed to be bent so as to have a larger radius of curvature than the first partial cylindrical portion 22 and may be formed so as to be able to maintain its shape in a natural state.
　このような保護部材２０Ｃも、型８２の形状を変えることで、第１実施形態に係る保護部材２０と同様に保護部材製造装置５０を用いて製造することができる。具体的には、例えば、上記第１実施形態に係る型８２において、第１部分筒部２２側はそのままで、開閉片部３０のうちシート状部材４０の幅方向他方側端部４２を成形する部分が第１部分筒部２２を成形する部分と同様の形状に形成されていることが考えられる。これにより、型８２の形状を変えることで保護部材製造装置５０を用いて保護部材２０Ｃを製造することができる。 Such a protective member 20C can be manufactured using the protective member manufacturing apparatus 50 in the same manner as the protective member 20 according to the first embodiment by changing the shape of the mold 82. Specifically, for example, in the mold 82 according to the first embodiment, the width direction other side end portion 42 of the sheet-like member 40 is formed in the opening / closing piece portion 30 without changing the first partial cylinder portion 22 side. It is conceivable that the portion is formed in the same shape as the portion that molds the first partial cylinder portion 22. Thereby, the protection member 20 </ b> C can be manufactured using the protection member manufacturing apparatus 50 by changing the shape of the mold 82.
　第４実施形態に係る保護部材２０Ｃによると、開閉片部３０Ｃは、シート状部材４０の幅方向他方側端部４２を第１部分筒部２２と同じ曲率半径で第１部分筒部２２側に曲げて形成された第２部分筒部３２を含むため、保護部材２０Ｃの他方側端部がめくれることを抑制することができる。この際、開閉片部３０Ｃが自然状態で第１部分筒部２２と第２部分筒部３２との間に間隔があくように第１部分筒部２２と第２部分筒部３２とをつなぐ連結部３６を含むため、電線１２の挿入性の低下を抑えることができる。 According to the protection member 20 </ b> C according to the fourth embodiment, the opening / closing piece 30 </ b> C has the other end 42 in the width direction of the sheet-like member 40 on the first partial cylinder 22 side with the same radius of curvature as the first partial cylinder 22. Since the second partial cylinder portion 32 formed by bending is included, it is possible to prevent the other end portion of the protection member 20C from being turned up. At this time, the connecting portion that connects the first partial cylinder part 22 and the second partial cylinder part 32 so that the opening / closing piece part 30C has a space between the first partial cylinder part 22 and the second partial cylinder part 32 in a natural state. Since the part 36 is included, the fall of the insertability of the electric wire 12 can be suppressed.
　また、第２部分筒部３２は、半筒に曲げられて形成されているため、第２部分筒部３２を第１部分筒部２２の外側で線状体の周囲に取り付けた際に第２部分筒部３２が線状体から外れにくくなる。これにより、電線挿入後の取扱性の向上につながる。また、第２部分筒部３２を第１部分筒部２２及び線状体の外側に取り付ける際に、第２部分筒部３２を広げなくとも取り付けることができる。これにより、保護部材２０Ｃの取付性の向上につながる。 Moreover, since the 2nd partial cylinder part 32 is bent and formed in the half cylinder, when the 2nd partial cylinder part 32 is attached to the circumference | surroundings of a linear body on the outer side of the 1st partial cylinder part 22, it is 2nd. The partial cylinder portion 32 is difficult to come off from the linear body. Thereby, it leads to the improvement of the handleability after electric wire insertion. Moreover, when attaching the 2nd partial cylinder part 32 to the 1st partial cylinder part 22 and the outer side of a linear body, the 2nd partial cylinder part 32 can be attached even if it does not spread. Thereby, it leads to the improvement of the attachment property of 20 C of protection members.
　また、連結部３６が自然状態で平板状を維持可能に形成されているため、開閉片部３０に多少の外力がかかっても第１部分筒部２２の開口を塞ぐような変形がし難くなる。これにより、電線等の挿入性の向上につながる。 Further, since the connecting portion 36 is formed so as to be able to maintain a flat plate shape in a natural state, it is difficult to be deformed so as to close the opening of the first partial cylinder portion 22 even if a slight external force is applied to the opening / closing piece portion 30. . Thereby, it leads to the improvement of insertability, such as an electric wire.
　なお、上記各実施形態で説明した各構成は、相互に矛盾しない限り適宜組み合わせることができる。 In addition, each structure demonstrated by each said embodiment can be suitably combined unless it mutually contradicts.
　以上のようにこの発明は詳細に説明されたが、上記した説明は、すべての局面において、例示であって、この発明がそれに限定されるものではない。例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。 Although the present invention has been described in detail as described above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.
　１０　保護部材付電線
　１２　電線
　２０　保護部材
　２２　第１部分筒部
　３０　開閉片部
　３２　第２部分筒部
　３６　連結部
　４０　シート状部材
　４１　一方側端部
　４２　他方側端部
　５０　保護部材製造装置
　６０　上流側シート搬送機構
　７０　加熱部
　８０　成形部
　８２　型
　８７　案内通路
　８８　成形通路 DESCRIPTION OF SYMBOLS 10 Electric wire with a protection member 12 Electric wire 20 Protection member 22 1st partial cylinder part 30 Opening and closing piece part 32 2nd partial cylinder part 36 Connection part 40 Sheet-like member 41 One side edge part 42 The other side edge part 50 Protection member manufacturing apparatus 60 Upstream Side sheet conveyance mechanism 70 Heating unit 80 Molding unit 82 Mold 87 Guide path 88 Molding path

Claims (11)

  1. 　線状体の周囲に取付けられる保護部材であって、
    　シート状部材の幅方向一方側端部を曲げて形成された第１部分筒部と、
    　前記第１部分筒部の縁部から前記シート状部材の幅方向他方側端部に亘る部分であって、自然状態で前記第１部分筒部との間で開口を形成可能に延び、前記第１部分筒部に線状体を挿入した後に前記第１部分筒部の内周側又は外周側に重なるように曲げ可能に形成された開閉片部と、
    　を備える、保護部材。     A protective member attached around the linear body,
    A first partial tube portion formed by bending an end portion on one side in the width direction of the sheet-like member;
    A portion extending from an edge portion of the first partial cylinder portion to the other side end portion in the width direction of the sheet-like member, and extends in a natural state so as to form an opening with the first partial cylinder portion; An open / close piece formed so as to be able to be bent so as to overlap the inner peripheral side or the outer peripheral side of the first partial cylindrical part after inserting a linear body into the partial cylindrical part;
    A protective member.
  2. 　請求項１に記載の保護部材であって、
    　前記第１部分筒部が半筒以上に曲げて形成されている、保護部材。     The protective member according to claim 1,
    The protective member in which the first partial cylinder portion is formed by bending more than a half cylinder.
  3. 　請求項２に記載の保護部材であって、
    　前記第１部分筒部が４分の３筒以上に曲げて形成されている、保護部材。     The protective member according to claim 2,
    The protective member in which the first partial cylinder portion is formed by being bent into three or more quarters.
  4. 　請求項１から請求項３のいずれか１項に記載の保護部材であって、
    　前記開閉片部は、自然状態で平板状又は前記第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されている、保護部材。     It is a protection member given in any 1 paragraph of Claims 1-3,
    The said opening-and-closing piece part is a protection member currently formed so that plate shape which has a curvature radius larger than the curvature radius of a 1st partial cylinder part or a said 1st partial cylinder part can be maintained.
  5. 　請求項１から請求項３のいずれか１項に記載の保護部材であって、
    　前記開閉片部は、
    　前記シート状部材の幅方向他方側端部を前記第１部分筒部と同じ曲率半径で前記第１部分筒部側に曲げて形成された第２部分筒部と、
    　自然状態で前記第１部分筒部と前記第２部分筒部との間に開口が形成可能に前記第１部分筒部と前記第２部分筒部とをつなぐ連結部と、
    　を含む、保護部材。     It is a protection member given in any 1 paragraph of Claims 1-3,
    The opening / closing piece is
    A second partial cylinder portion formed by bending the other end portion in the width direction of the sheet-like member to the first partial cylinder portion side with the same radius of curvature as the first partial cylinder portion;
    A connecting part that connects the first partial cylinder part and the second partial cylinder part so that an opening can be formed between the first partial cylinder part and the second partial cylinder part in a natural state;
    Including a protective member.
  6. 　請求項５に記載の保護部材であって、
    　前記第２部分筒部は、半筒に曲げられて形成されている、保護部材。     The protective member according to claim 5,
    The said 2nd partial cylinder part is a protective member bent and formed in the half cylinder.
  7. 　請求項５又は請求項６に記載の保護部材であって、
    　前記連結部は、自然状態で平板状又は前記第１部分筒部の曲率半径よりも大きい曲率半径を有する板状を維持可能に形成されている、保護部材。     The protective member according to claim 5 or 6,
    The said connection part is a protection member currently formed so that a plate shape which has a curvature radius larger than the curvature radius of the flat shape or the said 1st partial cylinder part in a natural state can be maintained.
  8. 　請求項１から請求項７のいずれか１項に記載の保護部材であって、
    　前記シート状部材は、不織布を材料として形成されている、保護部材。     It is a protection member given in any 1 paragraph of Claims 1-7,
    The said sheet-like member is a protection member formed using the nonwoven fabric as a material.
  9. 　請求項１から請求項８のいずれか１項に記載の保護部材であって、
    　延在方向に沿って送られている途中の前記シート状部材が加熱された状態で型に通されることで、自然状態の形状を維持可能に形成されている、保護部材。     It is a protection member given in any 1 paragraph of Claims 1-8,
    The protection member formed so that the shape of a natural state can be maintained because the sheet-like member in the middle of being sent along the extending direction is passed through a mold in a heated state.
  10. 　請求項１から請求項９のいずれか１項に記載の保護部材と、
    　前記保護部材が取り付けられた電線と、
    　を備える、保護部材付電線。     The protective member according to any one of claims 1 to 9,
    An electric wire to which the protective member is attached;
    An electric wire with a protective member.
  11. 　少なくとも一端側に部分筒部が形成された保護部材の製造方法であって、
    　（ａ）シート状部材を延在方向に沿って送る工程と、
    　（ｂ）送られている途中の前記シート状部材を加熱する工程と、
    　（ｃ）送られている途中の前記シート状部材を型に通す工程と、
    　を備える、保護部材の製造方法。     It is a manufacturing method of a protection member in which a partial cylinder part is formed on at least one end side,
    (A) sending the sheet-like member along the extending direction;
    (B) heating the sheet-like member being sent;
    (C) passing the sheet-like member being sent through a mold;
    A method for manufacturing a protective member.
PCT/JP2016/083394 2015-11-24 2016-11-10 Protective member, protective member-equipped electric wire, and method for producing protective member WO2017090447A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
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JP2013192415A (en) * 2012-03-15 2013-09-26 Sumitomo Wiring Syst Ltd Manufacturing method of wire harness and wire harness
JP2013225958A (en) * 2012-04-20 2013-10-31 Sumitomo Wiring Syst Ltd Wire harness and manufacturing method of the same
JP2015027781A (en) * 2013-07-01 2015-02-12 株式会社オートネットワーク技術研究所 Manufacturing apparatus and manufacturing method of sheet material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014230354A (en) * 2013-05-21 2014-12-08 住友電装株式会社 Route regulation member, manufacturing method of route regulation member, and wire harness

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013192415A (en) * 2012-03-15 2013-09-26 Sumitomo Wiring Syst Ltd Manufacturing method of wire harness and wire harness
JP2013225958A (en) * 2012-04-20 2013-10-31 Sumitomo Wiring Syst Ltd Wire harness and manufacturing method of the same
JP2015027781A (en) * 2013-07-01 2015-02-12 株式会社オートネットワーク技術研究所 Manufacturing apparatus and manufacturing method of sheet material

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