WIRING MEMBER

A wiring member includes: a sheet including a fusion layer; a wire-like transmission member fused to the fusion layer; a connector housing in which a cavity housing an end portion of the wire-like transmission member is formed; and a water stop member stopping water between a wall part of the cavity and the end portion of the wire-like transmission member. The water stop member includes an inner portion located in the cavity and an outer portion continuing into the inner portion to be located on an outer side of the cavity. Provided to the inner portion is a filling portion made up of a resin material thermally deformed to fill the cavity.

TECHNICAL FIELD

The present disclosure relates to a wiring member.

BACKGROUND ART

Ingress of water through a cavity is suppressed in a connector in some cases. In this case, a rubber plug put on an end portion of an electrical wire is firmly attached to an inner surface of the cavity in some cases as with a waterproof connector described in Patent Document 1, for example.

PRIOR ART DOCUMENTS

SUMMARY

Problem to Be Solved by the Invention

It is also desired that ingress of water through a cavity is suppressed in a connector without using a rubber plug.

Accordingly, an object is to provide a technique capable of making a connector waterproof without using a rubber plug.

Means to Solve the Problem

A wiring member according to the present disclosure is a wiring member including: a sheet including a fusion layer; a wire-like transmission member fused to the fusion layer; a connector housing in which a cavity housing an end portion of the wire-like transmission member is formed; and a water stop member stopping water between a wall part of the cavity and the end portion of the wire-like transmission member, wherein the water stop member includes an inner portion located in the cavity and an outer portion continuing into the inner portion to be located on an outer side of the cavity, provided to the inner portion is a filling portion made up of a resin material thermally deformed to fill the cavity, and the outer portion is connected to the sheet.

Effects of the Invention

According to the present disclosure, a connector can be made to be waterproof without using a rubber plug.

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 including a fusion layer; a wire-like transmission member fused to the fusion layer; a connector housing in which a cavity housing an end portion of the wire-like transmission member is formed; and a water stop member stopping water between a wall part of the cavity and the end portion of the wire-like transmission member, wherein the water stop member includes an inner portion located in the cavity and an outer portion continuing into the inner portion to be located on an outer side of the cavity, provided to the inner portion is a filling portion made up of a resin material thermally deformed to fill the cavity, and the outer portion is connected to the sheet. The water stop member is provided, thus the connector can be made to be waterproof without using a rubber plug. The water stop member is connected to the sheet, thus when force is applied to the wire-like transmission member in a direction of pulling the wire-like transmission member out of the cavity, force applied to the end portion of the wire-like transmission member is easily diffused, and concentration of stress hardly occurs in a specific position such as a locking part.

(2) It is also applicable that in the wiring member according to (1), provided is a terminal crimping part in which a terminal is crimped to the end portion of the wire-like transmission member, the terminal crimping part includes a covering crimping part in which an insulation barrel in the terminal is crimped to a covering layer in the wire-like transmission member, and the inner portion includes an intervention part intervening between the insulation barrel and the covering layer in the covering crimping part. Accordingly, the filling portion hardly comes out of the cavity.

(3) In the wiring member according to (1) or (2), a melting point of the water stop member may be lower than a melting point of the covering layer of the wire-like transmission member. Accordingly, a filling material can be melted without melting the covering layer as much as possible at a time of heating the filling material.

(4) In the wiring member according to any one of (1) to (3), a melting point of the water stop member may be lower than a melting point of the fusion layer. Accordingly, a filling material can be melted without melting the fusion layer as much as possible at a time of heating the filling material.

(5) In the wiring member according to any one of (1) to (4), a boundary portion between the inner portion and the outer portion may have an outer shape corresponding to an inner surface of the cavity. Accordingly, it is easily confirmed that the filling portion is provided.

(6) In the wiring member according to any one of (1) to (5), the water stop member may be a partially-extended part of the fusion layer. Accordingly, the fusion layer and the water stop member need not be provided as different members, thus reduction in the number of the members is achieved.

(7) In the wiring member according to any one of (1) to (5), it is also applicable that the water stop member is a member different from the fusion layer, and the outer portion is bonded to the sheet. Accordingly, a physical property of the water stop member and a physical property of the fusion layer can be easily made to be different from each other, thus a material suitable for each member is easily selected.

Detailed Description 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.

A wiring member according to an embodiment 1 is described hereinafter.FIG.1is perspective view illustrating a wiring member10according to the embodiment 1.FIG.2is a plan view illustrating the wiring member10according to the embodiment 1.FIG.3is a cross-sectional view of the wiring member cut along a III-III line inFIG.2.FIG.4is a cross-sectional view of the wiring member cut along a IV-IV line inFIG.2.FIG.5is a cross-sectional view of the wiring member cut along a V-V line inFIG.2.

The wiring member10includes a sheet20, a wire-like transmission member30, a connector housing50, and a water stop member60.

The sheet20includes a fusion layer22. The fusion layer22is a layer which can be fused to a covering layer34of the wire-like transmission member30. The fusion layer22includes a resin material, or preferably includes a thermoplastic resin material. The resin material of the fusion layer22is softened and fused to a fusion target. A type of the resin material is not particularly limited, but polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET) can be adopted, for example. The fusion layer22and the covering layer34preferably include the same type resin material.

A structure of the fusion layer22is not particularly limited. For example, the fusion layer22may 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 layer22is also considered a foam sheet, for example. The fusion layer22is also considered a fibrous material sheet such as a braided cloth, a woven cloth, or a non-woven cloth, for example.

Herein, the sheet20has a single layer structure of only the fusion layer22. The sheet may also have a multilayer structure of the fusion layer22with an additional layer thereon. When the sheet has the multilayer structure of the fusion layer22and the additional layer, the fusion layer22is preferably located at least on one main surface of the sheet. The additional layer is formed of a material different from that of the fusion layer22, or has a different structure. The additional layer increases a function of the fusion layer22, or adds a function which the fusion layer22does not have to the sheet20. A material constituting the additional layer is a material described for the fusion layer22described above or metal, for example. A structure of the additional layer may be any of the structure described for the fusion layer22described above. The additional layer may made up of a single layer or two or more layers.

The fusion layer22and the additional layer are fixed to each other while a surface of the fusion layer22and a surface of the additional layer have contact with each other. A fixing state of the fusion layer22and the additional layer is not particularly limited, however, fixing by fusion or adhesion is preferable. For example, when at least one of the fusion layer22and the additional layer 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 layer22and the additional layer are rigidly fixed. For example, it is also applicable that the fusion layer22is a solid sheet made up of resin, the additional layer is a fibrous sheet such as a non-woven sheet, and the fusion layer22and the additional layer are fused so that a material of the fusion layer22fills a part of voids of the additional layer.

The fusion layer22and the additional layer may be formed to have the same size (the same planar shape). One of the fusion layer22and the additional layer may also be formed to be larger than the other one thereof. The fusion layer22and the additional layer may be wholly fixed at a region where they have contact with each other. The fusion layer22and the additional layer may also be fixed only at a part of a region where they have contact with each other.

The sheet20may be a flexible member. The sheet20may have a plastic property so as to be able to follow bending of the wire-like transmission member30. It is also applicable that the sheet20is easily bended in a thickness direction (bended along an axis parallel to a main surface of the sheet20) and is hardly bended in a direction intersecting with the thickness direction (bended along an axis perpendicular to the main surface of the sheet20) in a state where the sheet20is developed.

The wire-like transmission member30is disposed on the fusion layer22of the sheet20. The wire-like transmission member30is fused to the fusion layer22. Accordingly, the wire-like transmission member30is kept in a state of being disposed along a predetermined route on the sheet20. The predetermined route of the wire-like transmission member30on the sheet20is a route corresponding to a wiring route of the wire-like transmission member30in a vehicle, for example. In this manner, the wire-like transmission member30is held by the sheet20in a state of extending to correspond to the route in the vehicle, thus the wire-like transmission member30is easily disposed long a predetermined wiring route when the wiring member10is assembled to the vehicle.

The predetermined route of the wire-like transmission member30on the sheet20includes one of or both a straight section and a bending section. The predetermined route of the wire-like transmission member30on the sheet20preferably includes two straight sections and a bending section therebetween. When the plurality of wire-like transmission members30are included, it is also applicable that all routes of the plurality of wire-like transmission members30are the same, or routes of some of the wire-like transmission members30are different from those of the other some of the wire-like transmission members30. When the routes of some of the wire-like transmission members30are different from those of the other some of the wire-like transmission members30, a branch part where some of the wire-like transmission members30are branched from the other some of the wire-like transmission members30may be provided on the sheet20. The branch part is provided on the sheet20, thus a portion including the branch part can also be held in the predetermined route. When the plurality of wire-like transmission members30are included, an intersection part where the wire-like transmission members30intersect with each other may be provided on the sheet.

A planar shape of the sheet20is preferably formed into a shape corresponding to the predetermined route of the wire-like transmission member30on the sheet20. When the predetermined route of the wire-like transmission member30includes the bending section, the planar shape of the sheet20is also preferably bended in accordance with the bending section. When the predetermined route of the wire-like transmission member30includes the branch part, the planar shape of the sheet20is also preferably branched in accordance with the branch part. The sheet20is preferably formed so that a dimension thereof along an extension direction of the wire-like transmission member30is larger than that along a width direction of the wire-like transmission member30.

FIG.2andFIG.5illustrate the sheet20, the wire-like transmission member30, and a fusion part WP. InFIG.2andFIG.5, the fusion parts WP are provided in a plurality of positions at intervals along the extension direction of the wire-like transmission member30. Each fusion part WP is a spot fusion part having a short side in the extension direction of the wire-like transmission member30. The fusion part WP may be sequentially provided along the extension direction of the wire-like transmission member30.

The wire-like transmission member30is a member transmitting electrical power or light. For example, the wire-like transmission member30is an electrical wire30transmitting electrical power or an optical fiber cable transmitting light. The wire-like transmission member30includes a transmission wire body32and a covering layer34. The transmission wire body is a portion transmitting electrical power or light. The transmission wire body32is a core wire32made up of a conductor in the covering electrical wire30or a core and a clad in an optical fiber cable, for example. The covering layer34is a member covering a periphery the transmission wire body32. The covering layer34is formed of resin such as PVC or PE extrusion molded around the transmission wire body32, for example. One wire-like transmission member may include a single transmission wire body or a plurality of transmission wire bodies. The wire-like transmission member 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). In the description hereinafter, the wire-like transmission member30is a covering electrical wire30(simply referred to as the electrical wire30hereinafter).

A terminal crimping part36is provided to an end portion of the electrical wire30. The terminal crimping part36is a portion where the terminal40crimped to the electrical wire30. The terminal crimping part36includes a core wire crimping part37and a covering crimping part38. More specifically, the core wire32is exposed from the covering layer34in the end portion of the electrical wire30. The terminal40is formed by bending and deforming a plate material having conductivity, for example. The terminal40includes a wire barrel42, an insulation barrel44, and the other side connection part46. The wire barrel42is a portion crimped to the core wire32exposed from the covering layer34. The portion of the wire barrel42crimped to the core wire32is the core wire crimping part37. The electrical wire30and the terminal40are electrically connected via the core wire crimping part37. The insulation barrel44is a portion crimped to the covering layer34. The portion of the insulation barrel44crimped to the covering layer34is the covering crimping part38. The other side connection part46is a portion electrically connected to the other side conductor. Herein, the other side connection part46is formed into a female terminal shape. Needless to say, the other side connection part46may be formed into a male terminal shape, for example.

The connector housing50is a molded member made up of resin such as polybutylene telephthalate (PBT) having insulation properties, for example, as a material. A cavity53is formed to pass through one main surface51and the other main surface52in the connector housing50. Accordingly, the cavity53has an opening in each of one main surface51and the other main surface52of the connector housing50. The opening of the cavity53in one main surface51of the connector housing50is referred to as one side opening, and the opening of the cavity53in the other main surface52of the connector housing50is referred to as the other side opening in some cases.

The end portion of the wire-like transmission member30is housed in the cavity53. The end portion of the wire-like transmission member30is inserted into the cavity53from one side opening. The terminal crimping part36is housed in a side of one side opening of the cavity53. Furthermore, herein, a part of covering layer34extending from the terminal crimping part36is housed in the side of one side opening of the cavity53. When the other side connection part46has the female terminal shape, the other side connection part46is generally housed in the cavity53, and does not protrude from the other side opening. Alternatively, a male terminal on the other side is inserted into the cavity53from the other side opening, and has contact with the other side connection part46as a female terminal, thus they are electrically connected to each other. When the other side connection part has the male terminal shape, the other side connection part generally protrudes to an outer side of the cavity53from the other side opening.

The water stop member60fills a portion between a wall part of the cavity53and the end portion of the wire-like transmission member30. The water stop member60includes an inner portion62and an outer portion70. The inner portion62is a portion located in an inner part of the cavity53. The outer portion70is a portion located in an outer part of the cavity53. The inner portion62and the outer portion70are connected to each other. The water stop member60is sectioned into the inner portion62and the outer portion70in one side opening of the cavity53as a boundary.

The inner portion62includes a filling part63. Herein, the inner portion62further includes an intervention part64, a joining part65, and a protrusion part66. Some or all of the intervention part64, the joining part65, and the protrusion part66may be omitted.

The filling part63is a portion made up of a resin material thermally deformed to fill the cavity53. Herein, the filling part63is provided on the side of one side opening of the cavity53. Particularly, the filling part63herein fills a portion between the wall part of the cavity53and the covering layer34in a portion of the cavity53where a part of the covering layer34extending from the terminal crimping part36is housed. The filling part63may fill a portion between the wall part of the cavity53and the terminal crimping part36in a portion of the cavity53where the terminal crimping part36is housed. The filling part63reaches one side opening of the cavity53. The filling part63of the inner portion62is continuously formed with the outer portion70.

The intervention part64is a portion intervening between the insulation barrel44and the covering layer34in the covering crimping part38. Herein, in a portion where the intervention part64is located, a gap is located between the insulation barrel44and the wall part of the cavity53, thus the filling part63is not located. The intervention part64continues into a side of the other side opening of the cavity53instead of the filling part63. The portion where the intervention part64is located may be the filling part63.

The joining part65is a portion between the filling part63and the intervention part64, and is a portion connecting the filling part63and the intervention part64. The joining part65covers the covering layer34extending from the terminal crimping part36in a position closer to the terminal crimping part36than the filling part63. A gap is located between the covering layer34and the cavity53in a position of the joining part65, thus the filling part63is not located. It is also applicable that the joining part65is omitted, and the filling part63and the intervention part64are directly connected to each other.

The protrusion part66is a portion protruding to a side of the wire barrel42with respect to the intervention part64. The protrusion part66does not preferably reach the core wire crimping part37. It is preferable that the protrusion part66does not reach the core wire32exposed from the end portion of the covering layer34, but remains in the end portion of the covering layer34.

The outer portion70is a portion extending to the outer side of the cavity53from the inner portion62. One end portion71of the outer portion70is connected to the sheet20. The other end portion72of the outer portion70is connected to the inner portion62(herein, the filling part63). Herein, the water stop member60is a partially-extended part of the fusion layer22. Accordingly, there is no joining surface in one end portion71of the outer portion70and the fusion layer22. The water stop member60is a part of one base material B (referFIG.6) described hereinafter, and the fusion layer22is the other part of the base material B. Herein, the plurality of electrical wires30are fused to the fusion layer22. A slit S is formed between the plurality of electrical wires30from an edge portion toward an intermediate portion of the base material B in the base material B. It is also applicable that a portion of the base material B where the slit S is formed to divide the base material B for each electrical wire30is the water stop member60and a portion thereof with no slit S is the fusion layer22. It is also applicable that one base material B is sectioned into the fusion layer22and the water stop member60in an end portion of the slit S as a boundary.

A boundary portion between the inner portion62and the outer portion70has an outer shape corresponding to the inner surface of the cavity53. Herein, the inner surface of the cavity53has a quadrangular shape, thus the outer shape of the boundary portion between the inner portion62and the outer portion70also has a quadrangular shape. The other end portion72of the outer portion70protrudes to the outer side of the cavity53while keeping the shape of the filling part63. The other end portion72of the outer portion70may have an outer shape larger than an inner surface shape of the cavity53. In this case, the other end portion72of the outer portion70may have contact with the edge portion of one side opening of the cavity53in one main surface51of the connector housing50.

One end portion71of the outer portion70keeps a flat sheet-like shape in the manner similar to the fusion layer22, and covers only one side of the wire-like transmission member30. The other end portion72of the outer portion70covers a whole periphery of the wire-like transmission member30in the manner similar to the filling part63. An intermediate portion73of the outer portion70is a transition portion of transitioning from the shape of one end portion71(flat sheet-like shape) to the shape of the other end portion72(shape surrounding the whole periphery of the wire-like transmission member30). That is to say, the intermediate portion73of the outer portion70gradually increases a region covering the periphery of the wire-like transmission member30from a state of covering only one side of the wire-like transmission member30on a side of one end portion71toward a state of covering the whole periphery of the wire-like transmission member30on a side of the other end portion72. One side portion and the other side portion of the base material B are fused to each other in the other end portion72of the joining part.

An example of a method of manufacturing the wiring member10is described with reference toFIG.6toFIG.9.FIG.6toFIG.9are schematic diagrams each illustrating a manufacture of the wiring member10according to the embodiment 1.

Firstly, as illustrated inFIG.6, the electrical wire30fused to the sheet-like base material B is prepared. The base material B is a portion to be eventually the water stop member60and the sheet20. The slit S is formed between the plurality of electrical wires30in the end portion of the base material B. Accordingly, the end portion of the base material B can be divided into a plurality of divided portions D. Each divided portion D serves as the water stop member60for each electrical wire30. The divided portion D and the electrical wire30are not fused to each other, however, the divided portion D and the electrical wire30may be fused to each other. A portion of the divided portion D fused to the electrical wire30may be kept in a fused state even after the divided portion D becomes the water stop member60. For example, one of or both the inner portion62and the outer portion70of the water stop member60may be fused to the electrical wire30. The end portion of the electrical wire30extends to an outer side from an end portion of the divided portion D. The covering layer34is partially peeled in the end portion of the electrical wire30, thus the core wire32is exposed. The terminal40is crimped to the end portion of the electrical wire30in this state.

When the terminal40is crimped to the end portion of the electrical wire30, as illustrated inFIG.7, the end portion of the divided portion D is also housed in the insulation barrel44together with the covering layer34. At this time, a part of the divided portion D in a width direction (an intermediate portion in a width direction inFIG.7) is sandwiched between the insulation barrel44and the covering layer34. The other part of the divided portion D in the width direction (one end portion and the other end portion in the width direction inFIG.7) extends along the insulation barrel44or the electrical wire30. Then, the insulation barrel44is swaged and deformed to be crimped to the covering layer34in this state, thus the other part of the divided portion D is also sandwiched between the insulation barrel44and the covering layer34. Accordingly, the divided portion D is kept in a state of being wound around the electrical wire30. The divided portion D may be formed so that a width dimension thereof is equal to or longer than a perimeter of the electrical wire30to cover the whole periphery of the electrical wire30. It is also applicable that the divided portion D may be formed so that a width dimension thereof is shorter than a perimeter of the electrical wire30to partially cover the periphery of the electrical wire30, and the one side portion and the other side portion of the divided portion D are separated from each other.

At this time, as illustrated inFIG.8, the divided portion D gradually increases a region covering the periphery of the wire-like transmission member30from a flat state of covering only one side of the wire-like transmission member30in a midway portion from the end portion of the slit S toward the covering crimping part38. A tip end portion of the divided portion D may slightly protrude to a side of the wire barrel42with respect to the insulation barrel44.

The end portion of the electrical wire30to which the terminal40is crimped is inserted into the cavity53from one side opening of the cavity53. The end portion of the electrical wire30is inserted to reach a position of the covering layer34beyond the terminal crimping part36. At this time, the divided portion D is kept in the state of being wound around the electrical wire30by the covering crimping part38, thus a portion of the divided portion D covering the covering layer34is also inserted while being kept in a state of surrounding the periphery of the electrical wire30to some extent as illustrated inFIG.9.

In a state immediately after the end portion of the electrical wire30is inserted to reach a predetermined position in the cavity53, as illustrated inFIG.9, a gap occurs between the divided portion D and the wall part of the cavity53and between the divided portion D and the covering layer34, for example. The divided portion D in the cavity53is heated to fill this gap. A method of heating the divided portion D is not particularly limited, however, the divided portion D in the cavity53may be heated by hot-air heating the divided portion D from an outer side of the connector housing50toward one side opening of the cavity53using a heating device80. It is also applicable that the connector housing50is heated, and the base material B in the cavity53is heated by heat conduction from the connector housing50, for example.

The heated divided portion D in the cavity53is eventually softened, and as shown by an arrow inFIG.9, the softened divided portion D flows to fill the gap between the divided portion D and the wall part of the cavity53and between the divided portion D and the covering layer34, for example. The divided portion D is firmly attached to the wall part of the cavity53and the covering layer34, and then hardened, thereby forming the filling part63as illustrated inFIG.3.

A range of the divided portion D softened and flowing is determined in accordance with a heating condition, for example, and a shape of a portion of the inner portion62except for the filling part63is not particularly limited as long as prevented is a shape thereof interfering with at least an electrical connection between the other side connection part46and the other side conductor and an electrical connection between the wire barrel42and the core wire32made up of a conductor. For example, the portion of the inner portion62except for the filling part63may include a portion where one side portion and the other side portion of the divided portion D are fused in the manner similar to the filling part63. The portion of the inner portion62except for the filling part63may include a portion where one side portion and the other side portion of the divided portion D are not fused but remain as they are.

When the divided portion D in the cavity53is softened and flows to be the filling part63, the divided portion D on an outer side of the cavity53may be also softened and flow. Thus, the shape of the other end portion72of the outer portion70is also determined in accordance with a heating condition, for example. In the other end portion72of the outer portion70, a portion of the divided portion D where one side portion and the other side portion are overlapped with each other may be wholly fused to each other. The other end portion72of the outer portion70may include a portion where one side portion and the other side portion of the divided portion D are overlapped with each other, but are not fused but remain as they are.

A melting point of the water stop member60(base material B) is not particularly limited, but is preferably lower than that of the connector housing50. For example, resin of the water stop member60is PVC or PE, and resin of the connector housing50is PBT, thus the melting point of the water stop member60is lower than that of the connector housing50.

The melting point of the water stop member60may be lower than that of the covering layer34of the wire-like transmission member30. Herein, the water stop member60is a portion extended from the fusion layer22, and the water stop member60and the fusion layer22may be formed by the same resin material as a base. The fusion layer22and the covering layer34may also be formed by the same resin material as a base. Accordingly, the water stop member60and the covering layer34may be made up of the same resin material. In this case, for example, it is considered that a type and a component of an additive agent is changed between the base material B before being processed to be eventually the fusion layer22and the water stop member60and the covering layer34to make the melting point of the water stop member60be lower than that of the covering layer34.

According to the wiring member10having the configuration described above, the water stop member60is provided, thus the connector can be made to be waterproof without using a rubber plug. More specifically, an outer surface of the filling part63is firmly attached to a whole perimeter of the wall part of the cavity53, and an inner surface of the filling part63is firmly attached to a whole perimeter of the covering layer34. Accordingly, suppressed is ingress of water from a portion between the wall part of the cavity53and the filling part63and between the covering layer34and the filling part63in a portion where the filling part63is provided.

It is sufficient that the filling part63is firmly attached to the wall part of the cavity53, thus needs not be bonded thereto. The filling part63may be bonded to the wall part of the cavity53. When the filling part63is bonded to the wall part of the cavity53, ingress of water from a portion between the wall part of the cavity53and the filling part63is further suppressed. In the similar manner, it is sufficient that the filling part63is firmly attached to the outer surface of the covering layer34, thus needs not be bonded thereto. The filling part63may be bonded to the outer surface of the covering layer34. When the filling part63is bonded to the outer surface of the covering layer34, ingress of water from a portion between the outer surface of the covering layer34and the filling part63is further suppressed. The filling part63in the water stop member60can be formed by inserting the base material B connected to the fusion layer22into the cavity53and heating and melting the base material B.

The water stop member60is connected to the sheet20in the wiring member10, thus when force is applied to the wire-like transmission member30in a direction of pulling the wire-like transmission member30out of the cavity53, force applied to the end portion of the wire-like transmission member30is easily diffused, and concentration of stress hardly occurs in a specific position such as a locking part. A lance used to lock the terminal40and the connector housing50is assumed to be the locking part, for example.

The water stop member60includes the intervention part64intervening between the insulation barrel44and the covering layer34in the covering crimping part38. Accordingly, the filling part63hardly comes out of the cavity53. When the sheet-like base material B is used as the filling material, for example, for providing the intervention part64, the base material B can cover the periphery of the wire-like transmission member30, and furthermore, the terminal40can be fused to the periphery of the base material B. Accordingly, the base material B can be easily kept in a state of covering the periphery of the wire-like transmission member30. The base material B covers the periphery of the wire-like transmission member30before being heated and melted, thus when the base material B is heated and melted to flow to fill the cavity53, a gap hardly occurs between the cavity53and the wire-like transmission member30.

A boundary portion between the inner portion62and the outer portion70has the shape corresponding to the inner surface of the cavity53. Accordingly, it is easily confirmed that the filling part63is provided to the inner portion62.

The melting point of the water stop member60is lower than that of the covering layer34of the wire-like transmission member30. Accordingly, the filling material (base material B) can be melted without melting the covering layer34as much as possible at a time of heating the filling material (base material B).

The water stop member60is a partially-extended part of the fusion layer22. Accordingly, the fusion layer22and the water stop member60need not be provided as different members, thus reduction in the number of the members is achieved.

A wiring member according to an embodiment 2 is described.FIG.10is a plan view illustrating a wiring member110according to the embodiment 2.FIG.11is a cross-sectional view of the wiring member cut along an XI-XI line inFIG.10. 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.

The wiring member110is different from the wiring member10described above in that a water stop member160and a fusion layer122are different members. An outer portion170is bonded to a sheet120in the water stop member160.

A bonding state of the outer portion170and the sheet120is not particularly limited. For example, the outer portion170and the sheet120may be fused to each other. In this case, the outer portion170may be fused to the fusion layer122of the sheet120. When the sheet120includes an additional layer, the outer portion170may be fused to the additional layer. The outer portion170and the sheet120may be bonded via an adhesive member such as an adhesive agent or a double-sided adhesive tape. The outer portion170and the sheet120may be mechanically bonded to each other via a mechanical joining member such as a clip or a rivet.

The sheet120and the outer portion170are stacked while main surfaces thereof are overlapped with each other. Herein, the outer portion170is overlapped with a surface of the sheet120where the electrical wire30is disposed. A portion of the outer portion170overlapped with the sheet120is located between the electrical wire30and the sheet120. The outer portion170may be overlapped with a surface of the sheet120on a side opposite to the surface thereof where the electrical wire30is disposed.

Herein, the outer portion170includes a first portion74and a second portion75. The first portion74is a portion continuing into the inner portion62. The first portion74is individually provided to each electrical wire30. Accordingly, the same number (herein, the plurality) of the first portions74as the electrical wires30are provided. The second portion75is a portion continuing into the plurality of first portions74. The plurality of first portions74are connected to each other via the second portion75. It can also be considered that the first portion74corresponds to the outer portion70in the embodiment 1, and the other end portion72in the first portion74continues into the second portion75in place of the fusion layer22. A configuration of one end portion, the other end portion, and an intermediate portion in the first portion74is similar to that of one end portion71, the other end portion72, and the intermediate portion73in the outer portion70. The second portion75is bonded to the sheet120. However, the outer portion170may not include the second portion75. The other end portion of each of the plurality of first portions74may be individually bonded to the sheet120.

Also according to the wiring member110of the present example, the effect similar to the wiring member10described above can be obtained except that the water stop member60and the fusion layer22are integrally formed. According to the wiring member110of the present example, the water stop member160and the fusion layer122are the different members, thus a physical property of the water stop member160and a physical property of the fusion layer122can be easily made to be different from each other, and a material suitable for each member is easily selected. The melting point of the water stop member160can be easily lower than that of the covering layer34of the wire-like transmission member30.

For example, the melting point of the water stop member160may be lower than that of the fusion layer122. Accordingly, a filling material can be melted without melting the fusion layer122as much as possible at a time of heating the filling material. Accordingly, deformation of the fusion layer122can be suppressed, and dissolution of the fusion state between the fusion layer122and the wire-like transmission member30can be suppressed.

When a member in which a base material (base material to be eventually the water stop member60) different from the sheet120and the sheet120are bonded is prepared in place of the base material B in the method of manufacturing the wiring member10according to the embodiment 1, then the wiring member110can be manufactured using the manufacturing method similar to that of the wiring member10according to the embodiment 1.

Modification Example

Also in the case where the fusion layer22and the water stop member60are integrally formed as with the wiring member10according to the embodiment 1, the melting point of the water stop member60may be lower than that of the fusion layer22as with the wiring member110according to the embodiment 2. For example, it is also considered that a component is changed between a portion to be the water stop member60and a portion to be the fusion layer22in the base material B before being processed to be eventually the fusion layer22and the water stop member60to make the melting point of the portion to be the water stop member60be lower than that of the fusion layer22. However, in the wiring member10according to the embodiment 1 and the wiring member110according to the embodiment 2, the melting point of each of the water stop members60and160may be equal to or higher than that of each of the fusion layers22and122.

In the above description, the water stop member60includes the intervention part64, however, this configuration is not necessary. The water stop member60may not include the intervention part64. In this case, the base material B may be or may not be temporarily held in the end portion of the electrical wire30before being inserted into the cavity53. When the base material B is temporarily held in the end portion of the electrical wire30before being inserted into the cavity53, for example, the base material B may be fused or bonded to the end portion of the electrical wire30. For example, it is also applicable that the base material B is wound around the end portion of the electrical wire30for one or more rounds, thus a portion where one side portion and the other side portion of the base material B are overlapped with each other is provided, and the overlapped portion is fused or bonded.

In the above description, the melting point of the water stop member60is lower than that of the covering layer34, however, this configuration is not necessary. The melting point of the water stop member60may be equal to or higher than that of the covering layer34.

In the above description, the boundary portion between the inner portion62and the outer portion70has the outer shape corresponding to the inner surface of the cavity53, however, this configuration is not necessary. For example, a magnitude of the outer shape at the boundary portion between the inner portion62and the outer portion70may be smaller than that of the inner surface of the cavity53. For example, it is also applicable that one side portion and the other side portion of the base material B are not fused to each other in the end portion of the outer portion70continuing into the filling part63, but are separated from each other.

In the above description, the connector housing50includes only one stage of row of the cavity53, however, this configuration is not necessary. Also applicable is a connector housing includes multiple stages of row of a cavity. In this case, it is also applicable that a set of a sheet and an electrical wire is provided for each stage of a cavity, and plural sets of the sheet and the electrical wire are stacked on each other. It is also applicable that the number of a set of a sheet and an electrical wire is one, and the electrical wire fused to one sheet is separately housed in plural stages of cavity.

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