Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
1997-08-07
2001-09-11
Young, Lee (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S854000, C029S857000
Reexamination Certificate
active
06286203
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method of installing a wire-harness which interconnects circuits provided inside and outside the compartment of a motor vehicle, more particularly, to a method of installing wire-harness which is capable of enhancing waterproofing, also installing a wire-harness easily between the inside and the outside of the compartment of the motor vehicle, and furthermore economizing the use of space at the rear side of an instrument panel on which various components and units are assembled.
DESCRIPTION OF THE RELATED ART
As shown in
FIG. 6
, in case of connecting circuits provided at outer rooms A, A′ other than a passenger room or a compartment, such as an engine room and a trunk room, with circuits provided at the compartment B, through holes are formed at a body panel
101
partitioning the outer room A and the compartment B and a body panel
102
partitioning the compartment B and the outer room A′, and wire-harnesses are passed through the through holes. In this way, wire-harnesses are installed from the outer rooms A and A′ into the compartment B.
Specifically, as shown in
FIGS. 7A and 7B
and
FIG. 8
, a through hole
101
a
(
102
a
) is formed in a body panel
101
(
102
), and a wire-harness
120
is held hermetically in the through hole
101
a
(
102
a
) with use of a rubber grommet
110
. The rubber grommet
110
is fitted into the through hole
101
a
so that waterproofing and soundproofing are obtained between the through hole
101
a
(
102
a
) and the wire-harness
120
.
However, in the aforementioned conventional method for installing a wire-harness, although an immersion of water from an abutment between the through hole
101
a
(
102
a
) and the wire-harness
120
can be prevented by the grommet
110
, there has been a problem that water immerses into the compartment B from the outer room A or A′ conveyed along taped wires
121
and
122
and therefore reliable waterproofing could not be obtained.
In addition, in order to introduce the wire-harness
120
from the outer room A (A′) into the compartment B, the conventional method has required a specific works of forming the through hole
101
a
(
102
a
) in the body panel
101
(
102
), inserting the wire-harness
120
through the through hole
101
a
(
102
a
), and then fitting the grommet
110
into the through hole
101
a
(
102
a
) after the insertion of the wire-harness
120
. Consequently, there has been such problems that it takes considerable working time to install the wire-harness
120
.
Furthermore, the body panel
101
at the front side of the motor vehicle, as shown in
FIG. 6
, is positioning at the rear side of an instrument panel on which various components and units are assembled concentrically. For this reason, there has been caused the problem that it is difficult to provide a space for installing the wire-harness
120
to the body panel
101
.
It is therefore an object of the present invention to provide a method of installing a wire-harness which is capable of enhancing waterproofing and installing a wire-harness easily between the inside and the outside of the compartment.
Another object of the present invention is to provide a method of installing a wire-harness which is capable of economizing a space at the rear side of an instrument panel on which various components and units are assembled concentrically.
SUMMARY OF THE INVENTION
To achieve the aforementioned objectives, there is provided a method for installing a wire-harness which interconnects electrical circuits provided at the inside of a compartment of a motor vehicle and electrical circuits provided at the outside or rooms other than the compartment. When a wind shield is fixed to a window frame of a vehicle body by a bonding agent, a flat cable is disposed at a portion of bonding of the wind shield where partitions the inside and outside of the compartment. Thus the electrical circuits provided at the outside of the compartment can be connected to the circuits provided at the inside of the compartment through the flat cable.
According to the method described above, when the wind shield is fixed to the window frame, the flat cable for interconnecting the electrical circuits provided at the inside and outside of the compartment can easily be disposed at the portion of bonding of the wind shield. Therefore, the installation of the wire-harness from the inside of the compartment to the outside of the compartment can be easily facilitated. That is, the work of disposing the flat cable is carried out simultaneously with the work of fixing the wind shield to the window frame, so that the present invention does not require any special wiring operation such as inserting the wire-harness through the through hole provided in the body panel and then fitting the grommet into the through hole afterward as in the aforementioned conventional method of installation.
Moreover, the compartment can be hermetically sealed by a bonding agent filled between the edge of the front wind shield and the window frame at the portion of bonding the wind shield. Therefore, according to the present invention, in spite of not employing a grommet, a reliable waterproofing can be obtained. Furthermore, since the flat cable is disposed at the portion of bonding wind shield, an additional installation space is not needed and therefore the space at the rear side of the instrument panel can be economized.
In one aspect of the present invention, among the wire-harness which interconnects electric circuits within the compartment and electric circuits mounted at the outside the compartment, only a portion which passes over the portion of bonding the wind shield is formed into a flat cable. Therefore, if the flat cable is disposed at the portion of bonding wind shield, the wire-harness connected to electric circuits at the outside of the compartment can be connected to the wire-harness being connected to electric circuits within the compartment at any time by means of such flat cable. Consequently, the wire-harnesses are not obstructive to other assembling works.
In another aspect of the present invention, the entire portion of the wire-harness which interconnects electric circuits provided within the compartment and electric circuits provided at the outside of the compartment consists of a flat cable. With this configuration, spaces can be economized at the inside and outside of the compartment.
REFERENCES:
patent: 1-212636 (1989-08-01), None
Armstrong Westerman Hattori McLeland & Naughton LLP
Smith Sean
Yazaki -Corporation
Young Lee
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