JP2002010438A - Protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protector imparted with wire connection capability. SOLUTION: While a connector housing part 10d is protrudedly installed by integral molding in a lid 10b closing an opening in a case 10a of a protector 10a, a joint bus-bar part 10e is formed inside the housing part 10d through injecting molding. By using highly conductive resin to the lid 10b integrally molded or the like, a conductive part is formed simultaneously. A connector C, mounted on a terminal of a wire group D-2, is fitted on the connector housing part 10d. While the wire group D-2 is electrically connected to the joint bus-bar part 10e, the protector 10 is fixed on a car body panel P of a car body fixing part 10f, via which the wire group D-2 is connected with the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a protector,
More specifically, a conductive portion is provided in a protector for protecting a wire harness, and a function of a so-called joint connector is added to the protector.

[0002]

2. Description of the Related Art In order to connect various electric components mounted on an automobile or the like, a large number of wire harnesses are routed around the vehicle body. These wire harnesses may connect the wires that make up the wire harness to form various circuits such as an earth circuit, and resin may be required at required locations to protect the wire harness itself and regulate the routing of the wiring configuration. In some cases, a protector made of the product is attached.

FIGS. 8A and 8B show a conventional situation in which a wire group D-1 for a ground circuit and another wire group D-2 are connected (splice absorption) to form a ground circuit. .
The joint connector 3 is used for this connection, and an electric wire group D-1 having a ground terminal E at the terminal and an electric wire group D-2 forming a branch line S branched from the trunk line K are each provided with a female terminal. Same connector C with housing shape
The connector C is fitted to a male housing-shaped joint connector 3 including a separate joint bus bar 4 formed of a conductive metal plate.

[0004] By the above fitting, the wire group D-1 and the wire group D
Reference numeral -2 denotes a conductive connection through the joint bus bar 4, and the fitted joint connector 3 and connector C are fixed by winding a tape T around the trunk K of the wire harness W / H. The ground terminal E is attached to the vehicle body panel P with bolts B to form a ground circuit.

On the other hand, FIG. 9A shows a wire harness W /
1 shows a conventional protector 1 mounted on an H. The protector 1 is formed of resin in a shape that matches the wiring form of the wire harness W / H, and the inside can accommodate the wire harness W / H to be mounted. It has a hollow shape with a secured cross-sectional area. In case of protector 1, wire harness W
/ H, the case 1a for accommodating the wire harness W / H is formed in a substantially T shape, and the cover of the case 1a is also closed with a substantially T-shaped lid 1c. A tape T is wound around each of the three inlets.

As shown in FIG. 9 (B), the electric wires may be connected to each other by the above-described joint connector at the place where the protector is mounted. In this case, a locking portion 1e 'of the joint connector 3' is formed on the upper surface 1d 'of the lid 1b' of the protector 1 'to facilitate fixing of the joint connector without winding the tape. A locking claw (not shown) is provided on the lower surface of the outer periphery of '′, and a joint connector 3' in which the connector C is fitted.
May be fixed to the protector 1 'in a cassette manner with a single touch. Thus, joint connector 3 '
Is fixed to the vehicle body panel P by a bolt B at a vehicle body fixing portion 1f 'protruding from the lid 1b'.

[0007]

As shown in FIG. 9 (B), when a protector is to be mounted and connected by a joint connector, a plurality of parts, such as the protector and the joint connector, are required. In addition to this, the cost may increase, and operations for managing the production and inventory of these parts may be complicated. further,
If the wiring space of the wire harness at the place where the protector is installed is limited due to the shape of the vehicle body, etc., it becomes difficult to secure the space for fixing the joint connector that is fixed in a form protruding from the wire harness. In particular, there is a problem that the weight increases by the weight of the joint connector.

On the other hand, FIGS. 8A and 8B and FIG. 9B
Paying attention to the earth circuit formed by the connection of the electric wires shown in FIG.
-1 and a ground terminal E are required, which also increases the number of components of the wire harness W / H, and also increases the labor required for assembly. Also,
The wire group D-1 has one end connected to the joint bus bar 4 via a terminal, and the other end connected to the vehicle body panel P via a ground terminal E. It also includes the possibility that a failure due to a poor connection or the like may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its first object to reduce the number of components when connecting by a joint connector at a place where a protector is mounted. It is a second object of the present invention to simplify the configuration of an earth circuit using a group of wires for an earth circuit and an earth terminal.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a protector for protecting a wire harness routed along a vehicle body, comprising a case having a concave cross section and an opening of the case being closed. A connector housing part is integrally formed with the case housing or the lid, and a joint bus bar made of a highly conductive resin is integrally formed with the connector housing part and connected to the inside of the connector housing part. There is provided a protector characterized in that a connector to which the electric wires are attached is fitted to the connector housing portion and the electric wires are connected via a joint bus bar portion.

As described above, when the connector housing is integrally formed with the protector and the joint busbar made of a highly conductive resin in the connector housing is integrally formed, the conventional protector, the joint connector, and the busbar have three parts. Can be reduced to one part. As a result, the labor and time required for assembly can be reduced,
The efficiency of management work can also be improved. Even if only the joint busbar part is molded with a highly conductive resin and the other protector and connector housing are molded with the same nonconductive resin as before, the final parts can be formed by stepwise molding. All can be integrally molded.

The highly conductive resin of the present invention is disclosed in JP-A-10-237331 and JP-A-11-342522.
As disclosed in JP-A No. 5-2, dispersion of thermoplastic resin mixed with metal fibers made of copper, nickel, iron, etc., lead-free solder (low melting point solder) and low melting point alloy such as Cu powder Made of a highly conductive resin composition.

The thermoplastic resin to which the conductive metal fiber is blended includes propylene, polyethylene, polystyrene, acrylonitrile / butadiene / styrene resin, modified polyphenylene oxide resin, polybutylene terephthalate resin, polyethylene terephthalate resin, polyamide resin, aromatic resin Polyamide resin, polyphenylene sulfide resin, liquid crystal polymer, polyetherimide,
Resins such as polybenzimidazole, polyetheretherketone, and polyethersulfone can be used alone or as a blend, and acrylonitrile-butadiene-styrene resin and polybutylene terephthalate resin are particularly preferably used.

As the low melting point alloy to be mixed and dispersed in the thermoplastic resin and to be joined in a network, an alloy having a melting point of 100 ° C. or higher, preferably 200 ° C. or higher and melting at the time of injection molding is used. System, Sn-Ag
-Pb system, Sn-Bi system, Sn-Bi-In system, Bi-
Pb-based, Bi-Sn-based, Sn-Cu-based, Sn-Cu-N
i-Pb system, Sn-Ag system, Sn-Bi-Pb system, Sn
—In-based ones.

[0015] Further, a vehicle body fixing portion protrudes from the case or the lid, and a conductive portion is provided continuously from the joint bus bar portion to the vehicle body fixing portion. The bus bar section is configured to be grounded to the vehicle body. In this manner, when the vehicle body fixing portion is protruded and a conductive portion continuous from the joint bus bar portion to the vehicle body fixing portion is formed, the conductive portion forms an earth circuit. Therefore, if the protector is fixed to the vehicle body panel via the vehicle body fixing part, the protector itself can be used as a ground circuit, and the wires and ground terminals conventionally used for ground connection can be omitted, and the number of connection points can be reduced. Accordingly, the reliability of conduction can be improved.

The conductive portion is formed by molding a portion continuous from the joint bus bar portion to the vehicle body fixing portion with a highly conductive resin, and includes a connector housing portion, a case, a lid, and all portions of the vehicle body fixing portion. May be molded with a highly conductive resin, or only a part may be molded with a highly conductive resin to provide a conductive portion. In the case where the conductive portion is partially provided, for example, a portion continuous from the connector housing portion to the vehicle body fixing portion in a straight band is formed of a highly conductive resin to form the conductive portion.

In the case where the entire protector is formed of a highly conductive resin, when the protector is fixed to the vehicle body panel at the vehicle body fixing portion, the entire protector is in a grounded state, and the wire group housed inside the protector is removed. It can be shielded from various noises. As a result, it is possible to prevent adverse effects due to noise and the like, and to improve reliability of transmission and reception of various signals by the wire harness. Even if the protector is made of a highly conductive resin as described above, it is grounded and dropped to 0 volt, so that no short circuit occurs even if another metal part or the like touches the protector.

The present invention is also a protector for protecting a wire harness routed along a vehicle body, comprising a case having a concave cross section and a lid for closing an opening of the case, wherein the case or the connector housing is provided by the lid. Parts are integrally formed and the vehicle body fixing part is protruded, and a separate joint bus bar made of a metal material is fixed inside the connector housing part, and the vehicle body fixing part is positioned from a position in contact with the joint bus bar. A conductive part formed of a highly conductive resin that is continuous up to the conductive part contacts the vehicle body when fixed to the vehicle body, and a connector connected to a branch line terminal branched from a main line of a wire harness to be inserted into the case, The connector housing part is fitted to the vehicle body via the joint bus bar and the conductive part. It provides a protector for the butterflies.

As described above, when the protector for projecting the vehicle body fixing portion is provided integrally with the connector housing portion and the conductive portion, and the joint bus bar made of a separate conductive metal material is fixed in the connector housing portion. Since the connection from the joint bus bar to the vehicle body fixing portion is conducted, the protector can form an earth circuit without using an earth connection wire. Also, the joint busbar is
Since the same connector as that used for the joint connector can be applied, it is not necessary to newly manufacture a mold or the like. In addition, the joint bus bar may be fixed by being sandwiched between the closed bottom surface of the connector housing portion and the fixed lid portion, and the tab portion at the tip of the joint bus bar is fixed to the press-fit hole provided on the closed bottom surface by press-fitting. Alternatively, when molding the protector, the joint bus bar may be fixed together by molding.

Further, the present invention is a protector for protecting a wire harness routed along a vehicle body, comprising a case having a concave cross section, and a lid for closing an opening of the case. A conductive portion made of a conductive resin is provided by integral molding, at least two or more wire connection portions are provided in the conductive portion, and each wire end is connected to the wire connection portion to connect each wire through the conductive portion. We provide protectors that are configured to connect each other.

As described above, when the conductive portion made of highly conductive resin is provided on the case or the lid of the protector, the electric wires can be connected without forming the connector housing portion. The electric wire connection portion of the conductive portion has a connection hole formed in a so-called connector cavity, and the core wire of the electric wire is inserted into the connection hole and welded, or a male terminal or the like is attached to a terminal of the core wire of the electric wire. It is preferable to connect the electric wire and the conductive part by inserting and locking the wire. By sequentially connecting the electric wires to the conductive portion in this way, different electric wires can be connected via the conductive portion, so that a conventionally used joint connector can be omitted. Also, in the above embodiment, since the joint connector does not protrude, the size of the protector does not increase,
Weight increase can also be suppressed. Note that the above embodiment is suitable for a case where the number of connected electric wires is small.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a protector 10 according to a first embodiment of the present invention. Protector 1
A main part 0 includes a case 10a having a concave cross section for housing the wire harness W / H therein, and a lid 10b for closing an opening of the case 10a.

On the upper surface 10c of the lid 10b, a connector housing portion 10d having substantially the same shape as a conventional joint connector is provided.
Are integrally formed, and the connector housing 1
A joint busbar portion 10e having substantially the same shape as the conventional joint busbar projects inside 0d. Further, from one side of the lid 10b, a vehicle body fixing portion 10f having a bolt hole 10g for fixing the protector 10 to the vehicle body.
Are provided at two places.

The protector 10 excludes the case 10a.
The connector housing portion 10d, the joint bus bar portion 10e, and the vehicle body fixing portion 10f are all integrally formed of a highly conductive resin on the lid 10b. As a result, the joint bus bar portion 10e and the connector housing portion 10d and the lid 1
A conductive portion 11 that is electrically connected to the vehicle body fixing portion 10f via Ob is formed. The case 10a is formed of a normal resin having no conductivity as in the related art.

On the other hand, in the wire harness W / H to which the protector 10 is mounted, a connector C 'is attached to a terminal of an electric wire group D-2 which branches a branch line S connected to a ground circuit from a trunk line K and forms the branch line S. Have been. However, another wire group in which a ground terminal is attached to a terminal for a conventional ground circuit is not prepared.

In order to connect the wire group D-2 to the ground by the protector 10, first, the trunk line K constituting the wire harness W / H is accommodated in the case 10a and the branch line S
Only the lid 10b is pulled out of the case 10a and the lid 10b is put on the case 10a and locked. Next, branch line S
Is connected to the connector housing 10d to electrically connect the joint bus bar 10c to the wire group D-2.

In this state, when the protector 10 is fixed to the vehicle body fixing portion 10f with the bolt B in the screw hole Pa also serving as a body ground portion of the vehicle body panel P, the body panel P is electrically connected to the joint bus bar portion 10f via the conductive portion 11. At the same time, the electric wire group D-2 is connected to the ground to form a ground circuit. Therefore, an earth circuit is formed only by the protector without using an electric wire or the like for earth connection. The configuration of the grounding circuit formed in this way has less possibility of occurrence of connection failure and the like because there is no place for connecting the grounding terminal and the electric wire, and the cross-sectional area of the conductive portion is constant. By doing so, the grounding is ensured in accordance with the required current amount.

It should be noted that the protector 10 of the first embodiment described above.
Various modifications are possible.For example, a connector housing portion may be provided on the case side in view of a space for attachment to a vehicle body. In this case, the case is also formed of a highly conductive resin. A conductive portion is formed from the joint bus bar portion to the vehicle body fixing portion through the connector housing portion, the case, and the lid. Further, when the entire protector is formed of a highly conductive resin as described above, the entire protector is grounded by ground connection, and the wire harness W passing through the inside is protected.
/ H is shielded to reduce the influence of noise generated around.

The protector 10 'shown in FIG. 3 does not use a joint bus bar 10e' and a joint bus bar 10
The closing surface 10g 'of the connector housing portion 10d' from which e 'protrudes, the band-shaped portion 10h' provided on the lid 10b 'continuous with the closing surface 10g', and the vehicle body fixing portion 10f 'are formed of a highly conductive resin. , A conductive portion 11 '(a portion marked with a number of points in the figure) which is continuous from the joint bus bar portion to the vehicle body fixing portion 10f' is provided. The other parts are formed of a normal resin having no conductivity. in this way,
By limiting the portion formed of the highly conductive resin, the conductive portion can be clarified.

FIG. 4 shows a protector 30 according to a second embodiment, in which a joint bus bar 31 is connected to the protector 30.
And separate. As in the first embodiment, the protector 30 includes a case 30 a having a concave cross-section and a case 3.
0a is formed by a lid 30b that closes the opening,
The lid 30b has a connector housing portion 30d protruding from the upper surface 30c and a vehicle body fixing portion 30f protruding from one side. The lid 30b, the connector housing 3
0d, the vehicle body fixing portion 30f is integrally formed of a highly conductive resin to form a conductive portion 31 that is electrically connected from the connector housing portion 30d to the vehicle body fixing portion 30f. The connector housing portion 30c is provided with a fixed lid portion 30j for fixing the separate joint bus bar 31 to the closed surface 30g by a thin hinge portion 3.
It is connected at 0k.

On the other hand, the joint bus bar 31 is formed by punching and bending a conductive metal plate, and can be used together with other joint connectors. The joint busbar 31 is fixed by closing the fixed cover 30j after opening the fixed cover 30j of the connector housing 30d and mounting the joint busbar 31 on the closed surface 30g having the tab hole.
In addition, as a fixing method other than the above, the tab hole on the closing surface is set to the same size as the tab part at the tip of the joint bus bar,
The tab portion may be press-fitted into the tab hole and fixed, or when the protector itself is formed, a joint bus bar may be molded together and fixed.

As described above, the joint bus bar 31
The protector 30 fitted with the connector is connected to the connector housing portion 30d through the trunk of the wire harness W / H and the vehicle body fixing portion 30f, as in the case of FIG. It is fixed to the vehicle body panel to form a ground circuit. As described above, the joint bus bar 31 is made of a metal product that can be used together with another joint connector, thereby suppressing an increase in cost and securing the reliability of connector connection. As in the first embodiment, the case 30a may be formed of a highly conductive resin according to the state of attachment to the vehicle body panel and the like. May be formed.

FIG. 5 shows a protector 50 according to a third embodiment of the present invention. The protector 50 has a function of a so-called joint connector for connecting the electric wires constituting the electric wire group, and includes a case 50a having a concave cross section, and a lid 50b for closing an opening of the case 50a.
The connector housing 50d is integrally formed on the upper surface 50c of the lid 50b so as to protrude therefrom, and the joint bus bar 50e is provided inside the connector housing 50c.
Are integrally molded.

The case 50a, the lid 50b, and the connector housing 50d are made of a resin having no ordinary conductivity, while only the joint bus bar 50e is made of a highly conductive resin. In addition, many tab-shaped parts 50m of the joint bus bar part 50e are connected so as to conduct on the closed surface side of the connector housing part 50d. Even if the type of resin to be molded is different, the joint bus bar portion 50e is integrally formed in the connector housing portion 50c by changing the resin in stages and performing injection molding.

The protector 50 has a wire harness W /
The trunk line K of H is housed, and the connector C ′ is attached to the terminal of each electric wire d constituting the electric wire group D-2 of the branch line S branched from the trunk line K. When this connector C 'is fitted into the connector housing 50d of the protector 50, the electric wires d are connected to each other via the joint bus bar 50e. Therefore, since only the protector 50 and the connector C 'are required for the connection between the electric wires, the number of joint connectors is reduced. As in the second embodiment, the joint bus bar portion 50e is provided with a conductive metal plate separately from the connector housing portion 50d so that the connection by the connector fitting is more reliably performed. Is also good.

FIG. 6 shows a protector 80 according to a fourth embodiment of the present invention. The protector 80 is for protecting a wire harness routed along the vehicle body, and includes a case 80a having a concave cross section and a lid 8 for closing an opening of the case 80a.
0b, and in the present embodiment, the wire harness W
/ H so that it can be attached to the branch point of / H
Are substantially T-shaped, and the case 80a itself is formed of a highly conductive resin to provide the conductive portion 81. Also,
On the upper surface 80p of the side wall 80n of the case 80a, an electric wire connection portion 80r formed in the same shape as the cavity of the connector is provided.
Are provided in the vicinity of the two electric wire insertion ports 80s of the case 80a. The lid 80b is formed of a normal resin having no conductivity.

In the case 80a, a wire harness W / H having a branch portion is housed, and an electric wire d for connection is provided.
Attach the terminal T to each terminal of 1 and d2, and connect
The wire d1 and the wire d2 are connected to each other via the conductive portion 81 that is the case itself by being inserted into the case 0r. Since the protector 80 does not protrude the joint connector unlike the protectors of the first to third embodiments,
Since the size is almost the same as that of the conventional protector, the electric wires can be connected to each other even in a place where the joint connector cannot be used. Also, there is no difference in weight from the conventional protector.

The protector 80 of the fourth embodiment is not limited to the above-described embodiment, and the shapes of the case 80a and the lid 80b are not limited to the wire harness W /
According to the form of H, it may be made into a substantially Y-shape or the same linear shape as in the first embodiment, and the number of the wire connection portions 80r may be increased according to the number of wires to be connected. Further, various electric wires for a ground circuit or the like may be connected to the electric wire connection portion 80r, and the present invention may be applied to connection with a required circuit. Further, as shown in FIG. 7, only the inside of the side wall 80n ', which is a portion connecting the electric wire connection portions 80r' of the case 80a ', is not limited to molding the entire case 80a or the like with a highly conductive resin. It is also possible to form a conductive portion 81 ′ (a portion indicated by a number of points in the drawing) by molding with a conductive resin, and to mold the other portion with a normal resin having no conductivity.

Further, the connection between the electric wire and the electric wire connection portion may be made by conducting welding by welding without attaching a terminal to the end of the electric wire, or by inserting the exposed core wire into the perforated electric wire connection portion. Conductive connection may be made using a conductive adhesive. In addition, contrary to the above, the whole or a part of the lid is formed of a highly conductive resin to provide a conductive portion and the same wire connection portion as described above is provided, and the wires are connected to each other by the conductive portion of the lid. You may do so. In the case of the fourth embodiment, since the connector housing portion is not provided, the number of wire connection portions that can be formed may be limited depending on the shape of the protector. It is suitable.

[0040]

As is apparent from the above description, first, in the protector provided with the joint connector, the number of parts can be reduced, and the labor required for assembly and the labor required for parts management are reduced. be able to.
Further, in the case of the earth connection, the protector is provided with a conductive portion made of a highly conductive resin, and the protector is fixed to the vehicle body panel via the protruded vehicle body fixing portion, so that the wire for the ground circuit and the ground terminal are provided. Can be eliminated, the number of components can be further reduced, and the reliability of the earth circuit formed can be improved as compared with the conventional case. Further, when the entire protector is formed of a highly conductive resin and connected to the ground, the adverse effect of noise can be prevented.

On the other hand, in the case where the protector is not provided with a connector housing portion for connecting the connector, the case or the cover itself is formed of a highly conductive resin to provide a conductive portion, and an appropriate wire connection portion is provided, so that the wires can be individually connected. The wires can be connected to each other via a conductive portion by connecting to the wire connecting portion, and the outer shape of the protector itself can be provided with a wire connecting function equivalent to the conventional shape. Therefore, even if the space is limited and the joint connector cannot be used due to the wiring location of the vehicle body, the protectors can connect the electric wires to each other, and a required electric circuit can be formed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a protector according to a first embodiment of the present invention is mounted on a wire harness.

FIG. 2 is an exploded perspective view of the protector.

FIG. 3 is a perspective view of a protector according to a modified example of the first embodiment.

FIG. 4 is an exploded perspective view of a protector according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which a protector according to a third embodiment of the present invention is mounted on a wire harness.

FIG. 6 is a perspective view of a protector according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view of a case in a protector according to a modified example of the fourth embodiment.

FIGS. 8A and 8B are perspective views showing a state of ground connection by a conventional joint connector.

FIG. 9A is a perspective view showing a state of attachment of a conventional protector, and FIG. 9B is a perspective view showing a ground connection state by a joint connector at a place where the conventional protector is attached.

[Description of Signs] 10, 30, 50, 80 Protectors 10a, 30a, 50a, 80a Cases 10b, 30b, 50b, 80b Lids 10d, 30d, 50d Connector housing portions 10e, 30e, 50e Joint bus bar portions 10f, 30f, 50f Car body fixing part 11, 31, 51, 81 Conductive part 80r Electric wire connection part K Main line S Branch line B Bolt W / H Wire harness

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01R 13/46 301 H01R 13/46 301B 31/08 31/08 Q F term (Reference) 5E087 EE14 FF02 FF24 GG02 JJ01 KK03 MM08 QQ04 RR03 RR25 RR29 RR47 5G357 DA04 DA06 DB03 DC12 DD02 DD06 DE03 DF10

Claims (4)

[Claims] 1. A protector for protecting a wire harness arranged along a vehicle body, comprising: a case having a concave cross section; and a lid for closing an opening of the case, wherein the connector housing portion is integrated with the case or the lid. A connector bus bar portion made of a highly conductive resin is provided integrally with the connector housing portion while being protruded by molding, and the connector to which each wire to be connected is attached is fitted into the connector housing portion. A protector having a configuration for connecting an electric wire through a joint busbar portion. 2. A vehicle body fixing portion protrudes from the case or the lid, and a conductive portion is provided continuously from the joint bus bar portion to the vehicle body fixing portion. The protector according to claim 1, wherein the busbar portion is configured to be grounded to the vehicle body. 3. A protector for protecting a wire harness arranged along a vehicle body, comprising: a case having a concave cross section; and a lid for closing an opening of the case, wherein a connector housing portion is integrally formed from the case or the lid. And a vehicle body fixing portion is protrudingly provided, and a separate joint bus bar made of a metal material is fixed inside the connector housing portion, and a conductive portion extending continuously from the position in contact with the joint bus bar to the vehicle body fixing portion. The connector housing part is formed of a highly conductive resin, and the conductive part contacts the vehicle body when fixed to the vehicle body, and is connected to a branch line terminal branched from a trunk line of a wire harness to be inserted into the case. And a ground connection to the vehicle body via the joint bus bar and the conductive portion. Protector. 4. A protector for protecting a wire harness arranged along a vehicle body, comprising: a case having a concave cross section; and a lid for closing an opening of the case, wherein the case or the lid is made of a highly conductive resin. Are provided by integral molding. At least two or more wire connection portions are provided in the conductive portion, and the ends of the wires are connected to the wire connection portions and the wires are connected to each other via the conductive portion. Protector that is configured.