JP2572496Y2 - Protector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protector for accommodating and protecting a wire harness therein, and more particularly, to making the protector conductive and having a shielding function, and connecting a ground wire to the conductive protector. And earthing of the wire harness can be easily performed.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a structure in which a ground wire of a wire harness is connected to a vehicle body made of a steel plate by using a protector to ground the vehicle body. (Showa 6
The above-mentioned conventional earthing structure uses the mounting portion of the protector to the vehicle body made of a steel plate, and the relay is connected to the ground terminal by a bolt of the mounting portion. The terminal or the bus bar for grounding is fastened and fixed simultaneously with the fastening to the vehicle body.

[0003]

However, in the above-described conventional grounding structure, since the fixing bolt of the protector to the vehicle body is used, a relay terminal or a grounding bus bar having a bolt hole formed at the bolt mounting position is used. It is necessary to dispose them, and a mechanism for connecting the ground terminal of the ground wire to the relay terminal or the ground bus bar is required. Therefore, the structure is complicated, the number of parts is increased, and the number of operations is increased. In addition, loosening or improper fastening of the fixing bolt causes poor conduction of the ground circuit, which has a problem in reliability.

The present invention has been made in view of the above-mentioned conventional problems. By making the entire protector conductive, a ground terminal is connected to the protector without an interposition of a relay terminal or the like, and the protector is connected. The ground circuit can be formed simply by fixing the vehicle body to the steel plate body via bolts, thereby simplifying the structure, reducing costs and facilitating assembly work. In addition, by making the protector conductive, a shield function is provided to the protector, and electric noise from the wire harness can be grounded to the vehicle body.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is directed to a protector for accommodating a wire harness including a plurality of electric wires therein, wherein the protector is entirely made of a conductive material. While molding with synthetic resin or rubber arranged and closing the entrance and exit of the wire harness with a conductive paste, a connection part with a ground wire is integrally formed on a side wall part, and a ground wire is connected to the connection part to form a ground wire. There is provided a protector in which a protector is connected, the protector is fixed to a steel plate body via a metal fixing tool, and the protector and an earth wire are grounded to a vehicle body. In addition, as a connection portion of the protector of the ground wire, an axial protrusion is provided on a side wall portion of the protector, and a mounting hole of a ground terminal crimped to a tip of the ground wire is inserted into the axial protrusion to be connected. ing. Alternatively, a fork-shaped press-fitting plate protruding from the side wall portion is provided as the connection portion, and a conductor of the ground wire is press-fitted into the central gap of the fork-shaped press-fitting plate and fixed. Alternatively, a structure in which a concave portion is formed in the side wall portion of the protector as the above-described connecting portion, and a conductor of an earth wire is inserted into the concave portion, and then a conductive plug is inserted and fixed to connect the ground line and the protector may be employed. Alternatively, form a mounting hole in the side wall of the protector,
A conductive clip may be inserted into the mounting hole from the insertion hole of the ground terminal to connect and fix the ground terminal to the protector. According to the present invention, there is provided a protector for accommodating a wire harness including a plurality of electric wires therein,
The entire protector is formed of synthetic resin or rubber provided with a conductive material, while a press-fit housing having an insertion groove for an earth terminal formed on an upper wall portion of the housing on a side wall portion is integrally formed. The earth terminal crimped into the terminal is press-fitted, the earth wire is connected to the protector, and the protector is fixed to a steel plate body via a metal fixture,
There is provided a protector in which the protector and the ground wire are configured to ground the vehicle body. Still further, according to the present invention, there is provided a protector for accommodating a wire harness including a plurality of electric wires therein, wherein the protector is entirely formed of synthetic resin or rubber provided with a conductive material, and the entrance and exit of the wire harness. Is sealed with a conductive paste, and a press-fit housing having an insertion groove for an earth terminal formed in the upper wall of the housing on the side wall is integrally formed, and the earth terminal is pressed into the press-fit housing to connect the ground wire and the protector. Further, the present invention provides a protector in which the protector is fixed to a steel plate body via a metal fixing tool so that the protector and the ground wire are grounded to the vehicle body.

[0006]

A metal foil is used as the conductive material, the metal foil is molded with synthetic resin or rubber to form a protector, and the metal foil is connected to the ground terminal or the conductor of the ground wire and a vehicle body fixture. It can also be configured.

Further, it is preferable that the entrance and exit of the wire harness of the protector are sealed with a conductive paste.

[0009]

With the protector of the present invention, the entire protector is formed of synthetic resin or rubber provided with a conductive material, and
By blocking the entrance and exit of the wire harness of the protector with the conductive paste, the protector has a shielding function, and the noise leaking from the gap between the protector and the accommodated wire harness (the entrance and exit of the wire harness) is cut off. And, in addition to the configuration to completely block the noise from the wire harness, the connection part with the ground wire is integrally formed on the side wall of the protector, and the ground wire is connected to this, and further, the protector is made of metal on the steel plate body. By fixing through the fixture, an earth circuit can be formed very easily between the earth wire and the steel plate body, and noise from the wire harness cut off by the protector and the conductive paste can be removed from the ground wire and the steel plate body. Can be grounded to the vehicle body (steel body). Further, in particular, a press-fit housing having an insertion groove for an earth terminal formed in an upper wall portion is integrally formed on a side wall portion of the protector, and an earth terminal crimped to a tip of an earth wire is press-fitted into the press-fit housing to form an earth wire. With the configuration for connection with the protector, a ground circuit for grounding the noise from the wire harness to the vehicle body (steel plate body) can be formed by an extremely simple operation.

[0010]

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. The present invention is characterized in that a protector made of a conductive material is integrally formed with a connection portion with a ground. First, the structure of the protector will be described in detail. As shown in FIG. 1, the protector 13 </ b> A is installed so that a wire harness 11 disposed along a metal floor 10 of an automobile is inserted into the inside to protect the wire harness 11. , Metal weld bolts 12,12
Is provided.

On the other hand, the protector 13A has an inverted U-shaped housing portion 1 for housing the wire harness 11 at a predetermined length.
A base portion 13b which is bent outward in an L-shape is provided at one lower end of the accommodation portion 13a, and the base portion 13b has an insertion hole for the weld bolts 12,12. 13c, 13c are formed.

The wire harness 11 is inserted through the accommodating portion 13a of the protector 13A, and the weld bolts 12, 12 are inserted into the insertion holes 13c, 13c of the base portion 13b, and the metal nuts 14, 14 are connected to the weld bolts 12, 12.
, The protector 13 </ b> A is fixed to the floor 10.

The protector 13A is formed of a synthetic resin material mixed with a conductive material. Examples of the molding material include a composite material obtained by mixing carbon in a polyethylene (PE) -based and PE copolymer, or a carbon black-composite polystyrene (PS) compound, polypropylene.
A (PP) compound composite material, a low-resistance compound mixed with a metal filler, a conductive rubber, an elastomer and the like are suitably used. In addition to the carbon, metal fibers, flakes, powders and the like may be mixed.

As the synthetic resin and rubber, the P
E, PE copolymer, PP, PVC, PS, AB
S, PPE, nylon, polyester, polycarbonate,
PPS, polyurethane, silicone rubber, SBR, fluoroprene, fluororesin, FRP, epoxy resin and the like can also be used.

[0016] The conductive material synthetic resin material or rubber material mixed with the volume resistivity (VR) is 10- ⁴ to 1
Range of 0 ¹² ohm cm is suitable, electromagnetic wave shielding, the absorption may be use a range of VR = 10- ⁴ ~10 ³ ohm cm.

The protector 13A is made of a synthetic resin material or a rubber material mixed with a conductive material. However, like the protector 13B shown in FIG.
The (conductive) foil 15 may be formed of a synthetic resin material or a rubber material obtained by insert molding. The metal foil 15 is
Electroless plating, application of conductive paint on synthetic resin materials, etc.
Insert molding can be easily performed by performing surface treatment such as zinc spraying and vacuum deposition.

Since the protectors 13A and 13B are made conductive as described above, the protectors 13A and 13B
Bolts and nuts 12 and 14 on the metal floor 10 of the automobile.
When fixed with floor 10, floor nuts 12,14,
Conductive material or metal foil 1 of protectors 13A and 13B
5 is electrically connected, and the protector 13
A and 13B are all at the ground potential, and the protectors 13A and 13A
13B itself has the function of shielding the wire harness 11.

Further, as shown in FIGS. 3 and 4, the entrance and exit of the wire harness 11 of the housing 13a of each of the protectors 13A and 13B may be sealed with conductive pastes 16 and 16. By doing so, noise is not conducted through the gap between the housing 13a and the wire harness 11, so that the shielding effect is further improved.

The protectors 13A and 13B which are formed from the above-described conductive material and have a shielding function are integrally formed with the connection portions with the ground wires described in the following embodiments. In the protector 13B, an insertion hole 13c is formed so that the bolt 12 and the nut 14 are in contact with the metal foil 15 to be molded therein, and a connecting portion with a ground wire described later is in contact with the metal foil 15. .

FIG. 5 shows a first embodiment. As shown in FIG. 5A, the protectors 13A, 13B
A connecting portion composed of an axial projection 13d is integrally formed on a wall portion of the protector 13A (hereinafter, only the protector 13A side is described). The mounting hole 17b of the ground terminal 17a crimped to the tip of the ground wire 17 is fitted to the shaft projection 13d, and the shaft projection 13d is crushed by melting with heat or ultrasonic waves as shown in FIG. 5 (B). And is welded to the ground terminal 17a. According to the above, since the protector 13A has conductivity, the protector and the ground wire 17 are connected via the axial protrusion 13d, and the protector is connected to the steel plate body via the bolt 12 and the nut 14. Because it is connected to the floor 10,
An earth circuit can be formed between the earth wire 17 and the vehicle body, and the vehicle can be grounded.

FIG. 6 shows a second embodiment, in which a fork-shaped press-fit plate 13e is provided on the wall of the protector 13A.
The connecting part to be formed is integrally formed. By press-fitting and fixing the conductor 17c of the ground wire 17 into the center gap of the fork-shaped press-fit plate 13e, the ground wire conductor 17c can be directly connected to the protector 13A.

FIG. 7 shows a third embodiment, in which a protector 13 is provided.
A connecting portion composed of a concave portion 13f is integrally formed on the side wall portion of A. The conductor 17c of the ground terminal 17 is inserted into the recess 13f, the conductive plug 18 is pressed into the recess 13f, and the conductor 17c is fixed and connected to the protector 13A.

FIG. 8 shows a fourth embodiment, in which a protector 13 is provided.
A connecting portion including a connecting hole 13g is integrally formed on the side wall portion of A. The grounding terminal 17a is connected to the mounting hole 17b through the connection hole 13g, and the locking flange 19a of the conductive clip 19 is inserted together with the shaft 19b, so that the tip of the flange 19a contacts the side wall surface of the protector 13A. On the other hand, the stopper 19c of the conductive clip is contact-locked to the ground terminal 17a, thereby connecting and fixing the ground terminal and the protector.

FIGS. 9 and 10 show a fifth embodiment, in which a male housing 13h is integrally formed on the side wall of the protector 13A, and an inverted L-shaped conductive tab 20 is insert-molded inside the male housing 13h. doing. on the other hand,
The terminal 22 having the insertion hole of the tab 20 connected to the conductor of the ground wire 17 is crimped to the tip of the ground wire 17 and the female housing 21 fitted inside the male housing 13h is attached to the tip of the ground wire. The female housing 21 is inserted into the male housing 13h, and the conductor of the ground wire 17 is connected to the protector 13A via the tab 20.

FIGS. 11 and 12 show a sixth embodiment, in which a box-shaped press-fit housing 13 having a recess 13i for press-fitting a ground terminal 17a in a side wall of a protector 13A.
j. An insertion groove 13m is formed in the upper wall of the press-fit housing 13j. The insertion groove 13m has a groove end face that is opposed and inclined so that the vicinity of the crimped portion between the ground wire and the ground terminal can be pushed in and inserted. As shown in FIG. 12A, after the ground wire is inserted into the recess 13i through the insertion groove 13m, the ground wire 17 is pulled and the ground terminal 17a is inserted into the recess 13i as shown in FIG. 12B. Is press-fitted and fixed.

[0027]

[Effect of the Invention] As is apparent from the above description, the protector of the present invention is formed by molding the protector with a synthetic resin or rubber in which a conductive material is mixed or a metal foil is insert-molded, and the protector itself is formed. Since the connection with the ground wire is formed integrally with the protector by imparting conductivity, the ground wire can be easily grounded by simply connecting the ground wire to the connection portion.

Since the entire protector is made conductive as described above, a ground wire may be connected to any part of the protector, so that the degree of freedom in design is increased. In addition, the ground terminal or the ground conductor may be directly connected to the protector, so that a relay terminal or the like is not required, and the number of parts and the number of assembling steps can be reduced. As a result,
Cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a protector according to the present invention.

FIG. 2 is a perspective view of another protector according to the present invention.

FIG. 3 is a side sectional view of a protector in which a conductive paste is sealed.

FIG. 4 is a front sectional view of FIG. 3;

5 (A) and 5 (B) are perspective views of the first embodiment of the present invention.

FIG. 6 is a perspective view of a second embodiment of the present invention.

FIG. 7 is a sectional view of a third embodiment of the present invention.

FIG. 8 is a perspective view of a fourth preferred embodiment of the present invention.

FIG. 9 is a perspective view of a fifth embodiment of the present invention.

FIG. 10 is a sectional view of FIG. 9;

FIGS. 11A and 11B are a side view and a perspective view of a sixth embodiment of the present invention.

FIGS. 12A and 12B are views showing a process of attaching a ground terminal in the sixth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Metal floor part 11 Wire harness 12 Weld bolt 13A, 13B Protector 13d Axial projection 13e Press-fitting plate 13f Concavity 13g Mounting hole 13h Female housing 13i Press-fitting part 13j Press-fitting housing 14 Nut 15 Metal (conductive) foil 16 Conductive paste 17 Ground wire 17a Ground terminal 20 Tab 21 Male housing 22 Terminal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 3/04 B60R 16/02 623 H01R 4/64 H05F 3/02 H05K 9/00

Claims (3)

(57) [Scope of request for utility model registration] 1. A protector for accommodating a wire harness including a plurality of electric wires therein, wherein the entire protector is formed of a synthetic resin or rubber provided with a conductive material, and an inlet / outlet of the wire harness is closed with a conductive paste. On the other hand, the connection part with the ground wire is integrally formed on the side wall,
A protector having a configuration in which a ground wire is connected to the connection portion to connect the ground wire to the protector, and the protector is fixed to a steel plate body via a metal fixture to ground the protector and the ground wire to the vehicle body. 2. A protector for accommodating a wire harness including a plurality of electric wires therein, wherein the entire protector is formed of synthetic resin or rubber provided with a conductive material.
A press-fit housing with an insertion groove that allows the vicinity of the crimping portion of the ground terminal and the ground wire to be inserted into the housing upper wall portion on the side wall is integrally molded, and the ground terminal crimped to the tip of the ground wire is press-fitted into the press-fit housing. A protector having a configuration in which a ground wire and a protector are fixed and the protector is fixed to a steel plate body via a metal fixing tool, and the protector and the ground wire are grounded to a vehicle body. 3. A protector for accommodating a wire harness including a plurality of electric wires therein, wherein the entire protector is formed of a synthetic resin or rubber provided with a conductive material, and a door of the wire harness is closed with a conductive paste. On the other hand, a press-fit housing having an insertion groove formed in a side wall portion and an upper wall portion of the housing so that the vicinity of the crimp portion of the ground terminal and the ground wire can be inserted is integrally formed, and the crimp housing is crimped to the tip of the ground wire. The protector has a configuration in which the protector and the ground wire are fixed to the steel plate body via a metal fixing tool, and the protector and the ground wire are grounded to the vehicle body.