Patent Publication Number: US-2023162885-A1

Title: Wiring member

Description:
TECHNICAL FIELD 
     The present disclosure relates to a wiring member. 
     BACKGROUND ART 
     Patent Document 1 discloses a wire harness in which an electrical wire is welded to a functional exterior member formed into a sheet-like shape. 
     PRIOR ART DOCUMENTS 
     Patent Document(s) 
     Patent Document 1: Japanese Patent Application Laid-Open No. 2013-137208 
     SUMMARY 
     Problem to be Solved by the Invention 
     It is desired that plural types of electrical wire are simply fixed to a sheet-like functional exterior member. 
     Accordingly, an object is to provide a technique capable of simply fixing a wire-like transmission member to a sheet regardless of a type of the wire-like transmission member. 
     Means to Solve the Problem 
     A wiring member according to the present disclosure includes: a sheet; at least one holding member fixed to the sheet; and a first wire-like transmission member held by the holding member, wherein the holding member includes a holding part in which a groove and a protrusion narrowing a width dimension of an opening part of the groove are termed, and the first wire-like transmission member is housed in the groove. 
     Effects of the Invention 
     According to the present disclosure, a wire-like transmission member can be simply fixed to a sheet regardless of a type of the wire-like transmission member. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic plan view illustrating a wiring member according to an embodiment 1. 
         FIG.  2    is a cross-sectional view of the wiring member cut along a II-II line in  FIG.  1   . 
         FIG.  3    is an exploded plan view illustrating the wiring member according to the embodiment 1. 
         FIG.  4    is an explanation diagram illustrating a state where a protrusion is formed. 
         FIG.  5    is a cross-sectional view illustrating a wiring member according to an embodiment 2. 
     
    
    
     DESCRIPTION OF EMBODIMENT(S) 
     [Description of Embodiment of Present Disclosure] 
     Embodiments of the present disclosure are listed and described firstly. 
     A wiring member according to the present disclosure is as follows. 
     (1) A wiring member includes: a sheet; at least one holding member fixed to the sheet; and a first wire-like transmission member held by the holding member, wherein the holding member includes a bolding part in which a groove and a protrusion narrowing a width dimension of an opening part of the groove are formed, and the first wire-like transmission member is housed in the groove. The first wire-like transmission member is held by the holding member fixed to the sheet. The protrusion is formed in the holding part, thus the first wire-like transmission member hardly comes out of the groove. Accordingly, the wire-like transmission member can be simply fixed to the sheet regardless of a type of the wire-like transmission member. 
     (2) The wiring member according to (1) may further include a second wire-like transmission member fused to the sheet. Accordingly, the second wire-like transmission member is directly held by the sheet in the wiring member. 
     (3) In the wiring member according to (1) or (2), the holding member may be fused to the sheet. Accordingly, a member for fixing the sheet and the holding member can be omitted in the wiring member. 
     (4) In the wiring member according to any one of (1) to (3), it is also applicable that the first wire-like transmission member includes a wire-like transmission member in which a covering layer is made of a first resin material, and a surface of the sheet on which the first wire-like transmission member is disposed is made of a second resin material different from the first resin material. Accordingly, the first wire-like transmission member hardly fused to the sheet is fixed to the sheet via the holding member. 
     (5) In the wiring member according to any one of (1) to (4), the plurality of holding members may be provided in a width direction of the sheet. Accordingly, when the wiring member is bended around an axis along a longitudinal direction, the sheet, is easily bended between the holding members, and bending of the holding member is suppressed. Accordingly, when the wiring member is bended around the axis along the longitudinal direction, the wire-like transmission member hardly comes out of the holding member. 
     (6) In the wiring member according to any one of (1) to (5), a tip end portion of a sidewall part of the groove may be thermally deformed to form the protrusion. Accordingly, a shape of the holding member before the formation of the protrusion can be simplified. 
     (7) In the wiring member according to any one of (1) to (6), it is also applicable that the holding members are provided in a plurality of positions at intervals along a longitudinal direction of the first wire-like transmission member, and the holding members in the plurality of positions are fixed to one piece of the sheet. Accordingly, the plurality of holding members are positioned by the sheet. A region in which the holding member is provided can be reduced compared with a case where the holding member is provided over the whole first wire-like transmission member. 
     [Details of Embodiment of Present Disclosure] 
     Specific examples of a wiring member of the present disclosure are described hereinafter with reference to the drawings. The present disclosure is not limited to these examples, but is indicated by claims, and it is intended that meanings equivalent to claims and all modifications within a scope of claims are included. 
     Embodiment 1 
     A wiring member  10  according to an embodiment 1 is described hereinafter.  FIG.  1    is a schematic plan view illustrating the wiring member  10  according to the embodiment 1.  FIG.  2    is a cross-sectional view of the wiring member  10  cut along a II-II line in  FIG.  1   .  FIG.  3    is an exploded plan view illustrating the wiring member  10  according to the embodiment 1. 
     The wiring member  10  includes a sheet  20 , a holding member  30 , and a plurality of wire-like transmission members  40 . 
     The sheet  20  includes a fusion layer  21 . Herein, the sheet  20  has a double layer structure of the fusion layer  21  and an additional layer  22 . The sheet  20  may have a single layer structure, or may also have a three or more layer structure. 
     The fusion layer  21  includes a resin material, or preferably includes a thermoplastic resin material. The resin material of the fusion layer  21  is softened and fused to a fusion target. A type of the resin material is mu particularly limited, but polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET) can be adopted, for example. One surface of the fusion layer  21  is a surface of the sheet  20  having contact with the holding member  30  and some wire-like transmission member  40 . 
     A structure of the fusion layer  21  is not particularly limited. For example, the fusion layer  21  may be a sheet having an evenly filled cross-sectional surface (also referred to as a non-foam sheet or a solid sheet, for example). The fusion layer  21  is also considered a foam sheet, for example. The fusion layer  21  is also considered a fibrous material sheet such as a braided cloth, a woven cloth, or a non-woven cloth, for example. 
     The additional layer  22  is formed of a material different from that of the fusion layer  21 , or has a different structure. The additional layer  22  increases a function of the fusion layer  21 , or adds a function which the fusion layer  21  does not have to the sheet  20 . A material constituting the additional layer  22  is a material described for the fusion layer  21  described above or metal, for example. A structure of the additional layer  22  may be any of the structure described for the fusion layer  21  described above. One surface of the additional layer  22  is a surface of the sheet  20  directed to a side opposite to the wire-like transmission member  40 . 
     The fusion layer  21  and the additional layer  22  are fixed to each other while the other surface of the fusion layer  21  and the other surface of the additional layer  22  have contact with each other. A fixing state of the fusion layer  21  and the additional layer  22  is not particularly limited, however, fixing by fusion or adhesion is preferable. For example, when at least one of the fusion layer  21  and/or the additional layer  22  is a sheet having voids in a surface such as a fibrous material sheet or a foam sheet, a resin material or an adhesive agent enters the voids and the layers can be fixed to each other. Such a configuration causes so-called anchor effect, thus the fusion layer  21  and the additional layer  22  are rigidly fixed. 
     In the description herein, the fusion layer  21  is a solid sheet formed of resin and the additional layer  22  is a fibrous material sheet. In the description herein, the fusion layer  21  and the additional layer  22  are fused to each other. That is to say, the resin of the fusion layer  21  enters between the fibers of the additional layer  22  while having flowability, and is then hardened. Accordingly, a state where the resin of the fusion layer  21  enters between the fibers of the additional layer  22  is maintained, and the fusion layer  21  and the additional layer  22  are rigidly fixed. 
     The fusion layer  21  and the additional layer  22  are formed to have the same size (the same planar shape). One of the fusion layer  21  and the additional layer  22  may also be formed to be larger than the other one thereof, the fusion layer  21  and the additional layer  22  are wholly fixed at a region where they have contact with each other. The fusion layer  21  and the additional layer  22  may also be fixed only at a part of a region where they have contact with each other. 
     The sheet  20  may be a flexible member. For example, the fusion layer  21  is a resin layer having an evenly filled cross-sectional surface made up of flexible resin such as flexible PVC as a material, the additional layer  22  is a non-woven cloth made up of PET as a material, and the sheet  20  is a flexible member. For example, the sheet  20  may have a plastic property so as to be able to follow bending of the wire-like transmission member  40 . It is also applicable that the wiring member  10  can be bended in a thickness direction (bending so that a told line follows a main surface of the sheet  20 ) in a portion where the sheet  20  is provided. The sheet  20  may be a member which cannot be curved in the thickness direction. The sheet  20  may be a member which is not broken but can be bended at a time of being bended in the thickness direction. The sheet  20  may be a member which is not broken but can be bended at a time of being bended in the thickness direction. 
     The holding member  30  includes a holding part  31 . A groove  34  and a protrusion  35  are formed in the holding part  31 . The holding part  31  includes a bottom part  32  and a plurality of sidewall parts  33 . The bottom part  32  and the plurality of sidewall parts  33  are formed into a plate-like shape. The plurality of sidewall parts  33  are formed to protrude on one surface of the bottom part  32 . The plurality of side wall parts  33  extend in parallel to each other. A portion surrounded by the bottom part  32  and the two sidewall pans  33  constitutes the groove  34 . The protrusion  35  is formed on a tip end portion of the sidewall part  33 . The protrusion  35  narrows a width dimension of an opening part of the groove  34 . 
     The holding member  30  is fixed to the sheet  20 . The holding member  30  is fused to the sheet  20  Herein, the other surface of the bottom part  32  has contact with the fusion layer  21 . The other surface of the bottom part  32  and the fusion layer  21  are fused to each other. Tire other surface of the bottom part  32  may be wholly fused to the fusion layer  21 . A part of the other surface of the bottom part  32  may be wholly fused to the fusion layer  21 . 
     At least one holding member  30  is provided. Herein, the plurality of holding members  30  are provided on one sheet  20 . One holding member  30  is formed to be smaller than the sheet  20 . A width dimension of the holding member  30  is smaller than that of the sheet  20 . A length dimension of the holding member  30  is smaller than that of the sheet  20 . 
     All of the plurality of holding members  30  may be formed to have the same shape. Some of the plurality of holding members  30  may be formed to have a shape different from the other some thereof. For example, the number of the grooves  34  in some of the plurality of bolding members  30  may be different from that in the other some of the plurality of holding members  30 . 
     In the example illustrated in  FIG.  2   , four grooves  34  are provided in one holding member  30 . Any number is applicable as the number of the grooves  34  provided in one holding member  30 , thus one to three grooves  34  or five or more grooves  34  are also applicable. 
     The plurality of wire-like transmission members  40  are wire-like members transmitting electrical power or light, for example. For example, the wire-like transmission member  40  may be a general wire having a core wire and a covering around the core wire, or may also be a shielded wire, an electrical cable, an enamel wire, a nichrome wire, or an optical fiber cable. The wire-like transmission member  40  includes a transmission wire body  41  and a covering layer  42 . 
     The transmission wire body  41  is a portion transmitting electrical power or light. The transmission wire body  41  corresponds to a conductor core wire in the electrical wire, and corresponds to a core and a clad in an optical fiber cable. The covering layer  42  covers the transmission wire body  41 . The covering layer  42  is formed of a resin material extruded around the transmission wire body  41  to cover it, for example. A type of the resin material is not particularly limited, however, PVC, PE, PP, and PET, for example, can be adopted. 
     The wire-like transmission member  40  transmitting the electrical power may be various kinds of signal lines or various kinds of power lines. Some of the wire-like transmission members  40  transmitting the electrical power may be used as an antenna or coil, for example, transmitting or receiving a signal or electrical power to or from a space. The wire-like transmission member  40  may be a single wire-like object or a composite object of a plurality of wire-like objects (a twisted wire and a cable made up of a plurality of wire-like objects covered by a sheath). When the wire-like transmission member  40  is a cable, a sheath is also included in the covering layer  42 . 
     The plurality of wire-like transmission members  40  are assumed to be members connecting components in a vehicle. An end portion of the wire-like transmission member  40  extends from the sheet  20  to be located on an outer side of the sheet  20 . An intermediate portion of the wire-like transmission member  40  except for the end portion is disposed on the sheet  20 . A connector C, for example, is provided on an end portion of the wire-like transmission member  40 . This connector C is connected to a connector provided in the other side component, thus the wire-like transmission member  40  is connected to the other side component. That is to say, the present wiring member  10  is used as the wiring member  10  electrically connecting various types of component in a vehicle, for example (or connecting them so that they can perform optical communication). The end portion of the wire-like transmission member  40  may also be located on the sheet  20 . A connector housing of the connector C may be fixed to the sheet  20 . 
     The plurality of wire-like transmission members  40  include a first wire-like transmission member  40 A and a second wire-like transmission member  40 B. A fixing state of being fixed to the sheet  20  is different between the first wire-like transmission member  40 A and the second wire-like transmission member  40 B. Specifically, the first wire-like transmission member  40 A is held by the holding member  30 . The first wire-like transmission member  40 A is housed in the groove  34 . The first wire-like transmission member  40 A is housed in the groove  34  to be closer to the bottom part  32  in relation to the protrusion  35 . Accordingly, the protrusion  35  prevents the first wire-like transmission member  40 A from coming out of the groove  34 . The second wire-like transmission member  40 B is fused to the sheet  20 . The fusion layer  21  has contact with the second wire-like transmission member  408 . The fusion layer  21  is fused to the covering layer  42  on an outermost side of the second wire-like transmission member  40 B. 
     The covering layer  42  of the first wire-like transmission member  40 A is made of a first resin material. The fusion layer  21  of the sheet  20  is made of a second resin material different from the first resin material. Herein, the covering layer  42  of the second wire-like transmission member  40 B is also made of the same second resin material as the fusion layer  21 . Herein, the holding member  30  is also made of the same second resin material as the fusion layer  21 . Any combination is applicable as a combination of the first resin material and the second resin material as long as different types of resin material are used as the combination. For example, it is also applicable that the first resin material is PVC and the second resin material is PE. For example, it is also applicable that the first resin material is PE and the second resin material is PVC. 
     The holding member  30  may be a member which does not have a plastic property. The holding member  30  may have rigidity so that it cannot be elastically deformed to curve the bottom part  32 . For example, it is also applicable that the sheet  20  and the covering layer  42  are flexible members having a plastic property, and the holding member  30  is a member harder than the sheet  20  and the covering layer  42 . When the fusion layer  21  and the covering layer  42  having hardness different from the holding member  30  and the holding member  30  are formed of the same type of resin material, they are formed as follows, for example. That is to say, a method including a known method can be adopted in accordance with a type of the resin material as a method of changing the hardness of the resin material. Specifically, in a case of PVC, for example, flexible PVC and hard PVC are obtained by changing an amount of a plasticizing agent to be added, for example. The hard PVC is harder than the flexible PVC. The flexible PVC is used for the fusion layer  21  and the covering layer  42 , and the hard PVC is formed for the holding member  30 . thus the holding member  30  is harder than the sheet  20  and the covering layer  42 . For example, when the resin material is PE, it is known that low density PE is softer than high density PE. The low density PE is used for the fusion layer  21  and the covering layer  42 , and the high density PE is formed for the holding member  30 , thus the holding member  30  is harder than the sheet  20  and the covering layer  42 . 
     In each drawing, a portion where the sheet  20  and the second wire-like transmission member  40 B are fused to each other is indicated as a fusion part WP. In the similar manner, a portion where the sheet  20  and the holding member  30  are fixed to each other is indicated as a fixing part FP. Herein, the sheet  20  and the holding member  30  are fused to each other. Accordingly, the fixing part FP is also the fusion part. 
     A means of forming such a fusion state is not particularly limited, however, adoptable are various types of fusion means such as ultrasonic fusion, heating pressurizing fusion, hot air fusion, and high-frequency fusion. When the fusion state is formed by these means, the fusion part WP is in a state of fusion fixation by those means. Specifically, when the fusion part WP is formed by ultrasonic fusion, the fusion part WP is an ultrasonic fusion part, for example. 
     The plurality of fusion parts WP are provided at intervals along an extension direction of the wire-like transmission member  40 . The fusion part WP may be sequentially provided along the extension direction of the wire-like transmission member  40 . The fixing part FP is provided over the whole holding member  30  in a width direction thereof. The plurality of fixing parts FP may be provided at intervals along the width direction of the holding member  30 . 
     The holding member  30  is provided in a plurality of positions at intervals along the longitudinal direction of the first wire-like transmission member  40 A. The holding member  30  in the plurality of positions is fixed to one sheet  20 . The holding member  30  is provided in a position in the second wire-like transmission member  40 B on a lateral side of the fusion part WP The holding member  30  may also be provided in a portion of the second wire-like transmission member  40 B where the fusion part WP is not provided. 
     One or the plurality of first wire-like transmission members  40 A and second wire-like transmission members  40 B are provided. Any number is applicable as the number of the first wire-like transmission members  40 A and the second wire-like transmission members  40 B, thus both the plurality of first wire-like transmission members  40 A and second wire-like transmission members  40 B are provided herein.  FIG.  1    and  FIG.  3    illustrate four wire-like transmission members  40  as a representative of the plurality of wire-like transmission members  40 . 
     The sheet  20  and the holding member  30  keep the plurality of wire-like transmission members  40  in a state of being arranged side by side. The wiring member  10  is thereby flatly formed. The sheet  20  and the holding member  30  keep the wire-like transmission member  40  in a state of extending along a predetermined route. A route of the wire-like transmission member  40  is a route along which the wire-like transmission member  40  extends on an assembly target (for example, a vehicle) when the wiring member  10  is assembled to the assembly target. Accordingly, when the wiring member  10  is assembled to a vehicle, for example, the wire-like transmission member  40  is easily kept in a state of following a predetermined route in the vehicle. 
     As illustrated in  FIG.  1   , the route of the wire-like transmission member  40  includes a bending part  43  and a branch part  44  herein. The bending part  43  is a portion where the plurality of wire-like transmission members  40  are bended while being in parallel to each other. The branch part  44  is a portion where some wire-like transmission member  40  is branched to extend in a direction different from the oilier some wire-like transmission member  40 . Herein, some first wire-like transmission member  40 A and second wire-like transmission member  40 B are branched from the other some first wire-like transmission member  40 A and second wire-like transmission member  40 B. it is also applicable that one of the first wire-like transmission member  40 A and the second wire-like transmission member  408  are not branched but collectively extend in the branch part  44 . The first wire-like transmission member  40 A and the second wire-like transmission member  40 B may be branched from each other. It is sufficient that at least one of the first wire-like transmission member  40 A and/or the second wire-like transmission member  40 B is branched. 
     Herein, the sheet  20  is formed into a shape along a route of the wire-like transmission member  40 . The sheet  20  includes a portion bended in accordance with a bended route of the wire-like transmission member  40 . That is to say, the sheet  20  is also bended in the bending part  43 . The sheet  20  includes a portion branched in accordance with a branched route of the wire-like transmission member  40 . That is to say, the sheet  20  is also branched in the branch part  44 . The sheet  20  may be formed into one large rectangular shape, for example. 
     Intersection parts  45  and  46  where the plurality of wire-like transmission members  40  intersect with each other are provided. Herein, the intersection pans  45  and  46  include a branch intersection part  45  and a displacement intersection part  46 . The branch intersection part  45  is a portion where some wire-like transmission member  40  intersects with the other some wire-like transmission member  40  to be branched therefrom. The branch intersection part  45  is provided in the branch part  44 . The displacement intersection part  46  is a portion where the wire-like transmission members  40  parallelly arranged intersect with each other to change their arrangement order. The displacement intersection part  46  is provided in a parallel route part. The displacement intersection part  46  may be provided in the branch part  44 . Any combination is applicable as a combination of two wire-like transmission members  40  constituting the intersection parts  45  and  46 . Thee first wire-like transmission member  40 A and the second wire-like transmission member  40 B may intersect with each other in the intersection parts  45  and  46 . The first wire-like transmission members  40 A or the second wire-like transmission members  40 B may intersect with each other in the intersection parts  45  and  46 . 
     Two holding members  30  are provided in positions on both sides of the bending part  43 . The plurality of wire-like transmission members  40  are bended between two holding members  30 . Three holding members  30  are provided in positions sandwiching the branch part  44  and the branch intersection part  45 . The plurality of wire-like transmission members  40  are branched and intersect with each other between three holding members  30 . Two holding members  30  are provided in positions on both sides of the displacement intersection part  46 . The plurality of wire-like transmission members  40  intersect with each other between two holding members  30 . 
     The first wire-like transmission member  40 A and the second wire-like transmission member  40 B are arranged in parallel to each other at least in a part of a section on the sheet  20 . In the example illustrated in  FIG.  1   , the section where the first wire-like transmission member  40 A anti the second wire-like transmission member  40 B are arranged in parallel to each other extends over a whole section disposed on the sheet  20 . 
     In the section where the first wire-like transmission member  40 A and the second wire-like transmission member  40 B are arranged in parallel to each either, the number of the first wire-like transmission members  40 A or the second wire-like transmission members  40 B may be larger than that of the other members, or the number of both the members may be the same as each other. In the example illustrated in  FIG.  2   , four first wire-like transmission members  40 A and three second wire-like transmission members  40 B are arranged in parallel to each other. 
     The plurality of second wire-like transmission members  40 B are arranged in parallel to each other at intervals. The interval between the second wire-like transmission members  40 B is smaller than a diameter of the second wire-like transmission member  40 B. The interval between the second wire-like transmission members  40 B may be equal to or larger than the diameter of the second wire-like transmission member  40 B. 
     The protrusion  35  is formed by thermally deforming a tip end of the sidewall part  33  of the groove  34 . A state where the protrusion  35  is formed is described with reference to  FIG.  4   .  FIG.  4    is an explanation diagram illustrating the state where the protrusion  35  is formed. 
     The holding member  30  illustrated by a solid line in  FIG.  4    is the holding member  30  before the protrusion  35  is formed. In the description hereinafter, the holding member  30  and the sidewall part  33  before the formation of the protrusion  35  are referred to as the holding member  30 S find the sidewall part  33 S in some cases to be distinguished from the holding member  30  and the sidewall part  33  after the formation of the protrusion  35 . 
     The protrusion  35  is not formed m the sidewall part  33 S of the holding member  30 S. A height of the sidewall part  33 S in the holding member  30 S is higher than that of the sidewall part  33  in the holding member  30 . The sidewall part  33  extends to have substantially the same thickness from a base end portion to a tip end portion. An inward surface of the tip end portion of the sidewall part  33  may be an inclined surface for guiding the wire-like transmission member  40  to the groove  34 . A width dimension of the groove  34  in the tip end portion of the sidewall part  33  may be wider than a width dimension of the groove  34  on a side of the bottom part  32 . The holding member  30 S made of resin as a material is formed by extrusion molding or injection molding. A type of the resin material is not particularly limited, however, PVC, PE, PP, and PET, for example, can be adopted. When the holding member  30  is fused to the fusion layer  21 , the resin material is preferably the same as the resin material of the fusion layer  21 . 
     The first wire-like transmission member  40 A is housed in the groove  34  in the holding member  30 S. In this state, the tip end portion of the sidewall part  33 S of the holding member  30 S is thermally deformed, and the protrusion  35  illustrated by a virtual line in  FIG.  4    is formed, thereby constituting the holding member  30 . The tip end portion of the sidewall part  33 S is crushed by a melt head  80 , for example. 
     More specifically, the melt head  80  includes a tip end surface capable of having contact with the tip end portions of the plurality of sidewall parts  33 S. The melt head  80  is a device heated by a heating part such as a heater, for example. The melt head  80  is heated to a temperature at which the melt head  80  can soften the sidewall part  33 S. The heated melt head  80  is pressed against the tip end portion of the sidewall part  33 S. Then, the tip end portion of the sidewall part  33 S is softened by the melt head  80 , and is crushed. The tip end portion of the sidewall part  33  which has been softened and crushed is pressed and widened to an upper side of the opening of the grooves  34  on both sides. The protrusion  35  narrowing the opening part of the groove  34  is thereby formed. Accordingly, the first wire-like transmission member  40 A is kept in a state of being housed in the groove  34 . 
     In the example illustrated in  FIG.  2   , the protrusions  35  of the sidewall parts  33  adjacent to each other do not have contact with each other. Thus, the groove  34  are slightly opened between the protrusions  35 . The protrusions  35  of the sidewall parts  33  adjacent to each other may have contact with each other. The opening part of the groove  34  may be completely closed by the protrusion  35 . A protrusion amount of the protrusion  35  is set as follows, for example. That is to say, the protrusion amount of the protrusion  35  may be set so that the holding member  30  is plastically deformed when the wire-like transmission member  40  is detached from the groove  34  after the formation of the protrusion  35 . That is to say, the protrusion amount of the protrusion  35  may be set so that it is difficult to detach the wire-like transmission member  40  from the groove  34  within a range of the plastic deformation of the holding member  30 . Accordingly, the wire-like transmission member  40  is hardly detached from the groove  34 . 
     In the example illustrated in  FIG.  4   , the melt head  80  is applied while all of the plurality of first wire-like transmission members  40 A held by one holding member  30  are housed in the grooves  34 . It is difficult to arrange the plurality of first wire-like transmission members  40 A in the groove  34  at the same time in some cases by reason that an introduction destination of the other end portions of the first wire-like transmission members  40 A is different from each other, for example. In such a case, it is also applicable that the plurality of first wire-like transmission member  40 A are divided into a plurality of groups, and the arrangement operation is performed for each group. For example, a first group made up of two wire dike transmission members  40  of four wire-like transmission members  40  and a second group made up of the other two wire-like transmission members  40  illustrated in  FIG.  4    may be sequentially arranged in the grooves  34  at different operation timing. In this case, the operation of forming the protrusion  33  may be performed for each group. Furthermore, in this case, the position of the protrusion  35  may deviate in the extension direction in the groove  34  of the first group and the groove  34  of the second group. That is to say, the tip end portion of the sidewall part  33 S in which the wire-like transmission member  40  of the first group is housed is thermally deformed in a first position along the extension direction to form the protrusion  35  for the first group. The tip end portion of the sidewall part  33 S in which the wire-like transmission member  40  of the second group is housed is thermally deformed in a second position deviating from the first position along the extension direction to form the protrusion  35  for the second group. 
     The operation of fusing the sheet  20  and the second wire-like transmission member  40 B, the operation of fixing the sheet  20  to the holding member  30 , and the operation of forming the protrusion  35  can be performed in an optional order. Two or throe of these three operations may be performed at the same time. 
     &lt;Effect etc. of Embodiment 1&gt; 
     According to the wiring member  10  having the above configuration, the first wire-like transmission member  40 A is held by the holding member  30  fixed to the sheet  20 . The protrusion  35  is formed in the holding part  31 , thus the first wire-like transmission member  40 A hardly comes out of the groove  34 . Accordingly, the wire-like transmission member  40  can be simply fixed to the sheet  20  regardless of a type of the wire-like transmission member  40 . The second wire-like transmission member  40 B is fused to the sheet  20 . Accordingly, the wire-like transmission member  40  which can be fused to the sheet  20  is fused to the sheet  20 , and the wire-like transmission member  40  which is hardly fused to the sheet  20  is held by the bolding member  30 . thus is simply held by the sheet  20 . 
     The holding member  30  is fused to the sheet  20 . Accordingly, a member for fixing the sheet  20  and the holding member  30  can be omitted in the wiring member  10 . 
     The first wire-like transmission member  40 A includes the wire-like transmission member  40  in which the resin material of the covering layer  42  is different from the resin material of the sheet  20 . Accordingly, the first wire-like transmission member  40 A which is hardly fused to the sheet  20  is fixed to the sheet  20  via the holding member  30 . 
     The tip end of the sidewall part  33  of the groove  34  is thermally deformed to form the protrusion  35 . Accordingly, a shape of the holding member  30 S before the formation of the protrusion  35  can be simplified. In a case where the wire-like transmission member  40  is not taken out from the groove  34  after the formation of the protrusion  35 , when the protrusion  35  is formed to be large, detachment of the wire-like transmission member  40  from the groove  34  is suppressed. 
     The holding member  30  provided in a plurality of positions at intervals along the longitudinal direction of the first wire-like transmission member  40 A is fixed to one sheet  20 . Accordingly, the plurality of holding members  30  are positioned by the sheet  20 . A region in which the holding member  30  is provided can be reduced compared with a case where the bolding member  30  is provided over the whole first wire-like transmission member  40 A. 
     Embodiment 2 
     A wiring member according to an embodiment 2 is described.  FIG.  5    is a cross-sectional plan view illustrating a wiring member  110  according to the embodiment 2. In the following description of the present embodiment, the same reference numerals are assigned to the similar constituent elements described above, and the description thereof will be omitted. 
     A position where the holding member  30  is provided on the sheet  20  in the wiring member  110  is different from that in the wiring member  10 . Specifically, the plurality of holding members  30  are provided in a width direction of the sheet  20  in the wiring member  110 . Accordingly, when the wiring member  110  is bended around an axis along the longitudinal direction as illustrated in  FIG.  5   , the sheet  20  is easily bended between the holding members  30 , and bending of the holding member  30  is suppressed. Accordingly, when the wiring member  110  is bended around the axis along the longitudinal direction, the wire-like transmission member  40  hardly comes out of the holding member  30 . 
     In the example illustrated in  FIG.  5   , two holding members  30  are provided in the width direction of the sheet  20 . Three or more holding members  30  may be provided in the width direction of the sheet  20 . In the example illustrated in  FIG.  5   , two holding members  30  are formed to have the same shape. Two holding members  30  may be formed to have different shapes. For example, the number of the grooves  34  may be different in two holding members  30 . 
     In the example illustrated in  FIG.  5   , the second wire-like transmission member  40 B is located between two holding members  30 . Two holding members  30  may be located adjacent to each other so that the second wire-like transmission member  40 B is not located between two holding members  30 . In the example illustrated in  FIG.  5   , the holding member  30  is located on both side edge portions of the sheet  20 . It is also applicable that the holding member  30  is located on an edge portion on one side of the sheet  20  and the second wire-like transmission member  40 B is located on an edge portion on the other side thereof. It is also applicable that, the holding member  30  is located on an intermediate portion of the sheet  20  and the second wire-like transmission member  40 B is located on both side edge portions of the sheet  20 . 
     When the holding member  30  is provided in a plurality of positions at intervals along the extension direction of the first wire-like transmission member  40 A in one sheet  20 , the plurality of holding members  30  may be provided in the width direction in all of the plurality of positions. It is also applicable that the plurality of holding members  30  are provided in some of the plurality of positions and one holding member  30  is provided in the width direction in the other some of the plurality of positions. 
     Modification Example 
     In the above description, the wiring members  10  and  110  include the second wire-like transmission member  40 B, however, this configuration is not necessary. The wiring members  10  and  110  may not include the second wire-like transmission member  40 B. All of the wire-like transmission members  40  in the wiring members  10  and  110  may be held by the holding member  30 , for example. The wire-like transmission member  40  which is not held by the holding member  30  in the wiring members  10  and  110  may be fixed to the sheet  20  by a fixing state other than fusion, for example. Applicable as the fixing slate is bonding via an intervention member such as an adhesive agent or a double-sided adhesive tape between the sheet  20  and the wire-like transmission member  40 , for example. For example, the wire-like transmission member may be pressed toward the sheet  20  by a sewing thread, stapler, a single-sided adhesive tape, or a sheet different from the sheet  20 . 
     In the above description, the holding member  30  is fused to the sheet  20 , however, this configuration is not necessary. Any fixing state may be applied as a fixing state of fixing the holding member  30  and the sheet  20 . For example, the holding member  30  and the sheet  20  may be bonded via an adhesive member such as an adhesive agent or a double-sided adhesive tape. For example, the holding member  30  and the sheet  20  may be fixed via a locking member such as a stapler. In this case, it is also applicable that a part of the bottom part  32  protrudes to a lateral side to constitute a flange part, and a locking member is locked to pass through the flange part and the sheet  20 . 
     In the above description, the tip end of the sidewall part  33  of the groove  34  is thermally deformed to form the protrusion  35 , however, this configuration is not necessary. The protrusion  35  may be previously formed before inserting the wire-like transmission member  40 . In this case, it is sufficient that holding part  31  can be elastically deformed so that the opening part of the groove  34  is widened to a degree that the wire-like transmission member  40  can be inserted into the groove  34 . The protrusion  35  is formed to protrude to both sides of one sidewall part  33  when the tip end of the sidewall part  33  of the groove  34  is thermally deformed to form the protrusion  35 , however, this configuration is not necessary. The protrusion  35  may be formed to protrude to one side of one sidewall part  33 . Such a protrusion  35  can be formed by bending the tip end portion of the sidewall part  33  which has ken heated and softened to an upper side of the groove  34  on one side. 
     In the above description, the first wire-like transmission members  40 A are housed in all of the grooves  34 , however, this configuration is not necessary. The first wire-like transmission member  40 A may not be housed in some groove  34 . In the above description, all of the plurality of first wire-like transmission members  40 A housed in the grooves  34  have the same configuration, however, this configuration is not necessary. Some of the plurality of first wire-like transmission members  40 A housed in the grooves  34  may have a configuration different from the other some of the plurality of first wire-like transmission members  40 A. For example, the plurality of first wire-like transmission members  40 A housed in the groove  34  may include a wire-like transmission member with a small diameter and a wire-like transmission member with a large diameter thus having different thickness. 
     In the above description, one first wire-like transmission member  40 A is housed in one groove  34 , however, this configuration is not necessary. The plurality of first wire-like transmission members  40 A may be housed in one groove  34 . The plurality of first wire-like transmission members  40 A may be housed in one groove  34  to be parallelly arranged in a height direction (depth direction). The plurality of first wire-like transmission members  40 A may be housed in one groove  34  to be parallelly arranged in a width direction. The plurality of first wire-like transmission members  40 A may be housed in one groove  34  to be obliquely arranged therein. The number of the first wire-like transmission members  40 A housed in the plurality of grooves  34  may be different from each other. 
     In the above description, the covering layer  42  of the first wire-like transmission member  40 A is made of the resin material different from that of the fusion layer  21 . however, this configuration is not necessary. The covering layer  42  of some or all of the first wire-like transmission members  40 A may be made of the same resin material as that of the fusion layer  21 . The wire-like transmission member  40  such as a twisted wire, for example, hardly fused to the fusion layer  21  may be held by the holding member  30  to constitute the first wire-like transmission member  40 A. 
     When the route of the first wire-like transmission member  40 A includes the branch part  44 , the number of first wire-like transmission members  40 A parallelly arranged on both sides of the branch part  44  may be changed. At this time, the shape of the holding member  30  may be commonalized on the both sides of the branch part  44 . The second wire-like transmission member  40 B fused to the sheet  20  in the route on one side of the branch part  44  may be housed in the holding member  30  in the route on the other side of the branch part  44 . 
     The number of ware-like transmission members  40  in the plural types of wiring member may be changed in accordance with a type of vehicle, a grade, or on option, for example. At this time, the shape of the holding member  30  may be commonalized between the plural types of wiring member. The wire-like transmission member  40  which is provided or is not provided in accordance with the type of wiring member may be held by the commonalized holding member  30 . 
     The configurations described in the embodiments and modification examples thereof can be appropriately combined as long as they are not contradictory. 
     EXPLANATION OF REFERENCE SIGNS 
       10 ,  110  wiring member 
       20  sheet 
       21  fusion layer 
       22  additional layer 
       30 ,  30 S holding member 
       31  holding part 
       32  bottom part 
       33 ,  33 S sidewall part 
       34  groove 
       35  protrusion 
       40  wire-like transmission member 
       40 A first wire-like transmission member 
       40 B second wire-like transmission member 
       41  transmission wire body 
       42  covering layer 
       43  bending part 
       44  branch part 
       45 , 46  intersection part 
       80  melt head 
     C connector 
     WP fusion part 
     FP fixing part