Title: Shield-processing structure of shielded cable
Abstract: In a shield-processing structure of a shielded cable 1, the shielded cable 1 and an earth cable 2 are held between two resin members 3 and 3, and ultrasonic vibration is applied to the resin members 3 and 3 while exerting a compressive force between the resin members 3 and 3, thereby forming a shield-processed portion. A shielded cable-receiving groove 15 and an earth cable-receiving groove 16 are formed in a joint surface 3a of each of the resin members 3 and 3, and earth cable-holding projections 17 are formed on each of the joint surfaces 3a, and is disposed adjacent to the shielded cable-receiving groove 15, and projects into the earth cable-receiving groove 16. Opposite end portions 17a and 17a of a distal end surface of each of the earth cable-holding projections 17 are higher than a central portion 17b thereof.
Patent Number: 6,984,787 Issued on 01/10/2006 to Mita, et al.
| Inventors:
|
Mita; Akira (Haibara-gun, JP);
Ide; Tetsuro (Haibara-gun, JP)
|
| Assignee:
|
Yazaki Corporation (Tokyo, JP)
|
| Appl. No.:
|
888504 |
| Filed:
|
July 12, 2004 |
Foreign Application Priority Data
| Jul 11, 2003[JP] | P2003-273313 |
| Current U.S. Class: |
174/84R; 174/94 |
| Current Intern'l Class: |
H01R 4/00 (20060101) |
| Field of Search: |
174/74 R,78,84.R,84.C,94.R
29/872,868
|
References Cited [Referenced By]
U.S. Patent Documents
| 5584122 | Dec., 1996 | Kato et al.
| |
| 5869784 | Feb., 1999 | Shinchi.
| |
| 5929384 | Jul., 1999 | Ide et al.
| |
| 5959252 | Sep., 1999 | Ide et al.
| |
| 6004170 | Dec., 1999 | Kato et al.
| |
| 6218919 | Apr., 2001 | Ciarcia et al.
| |
| 6291771 | Sep., 2001 | Tanikawa et al.
| |
| 6313407 | Nov., 2001 | Shinchi et al.
| |
| 6327777 | Dec., 2001 | Ide et al.
| |
| 6576842 | Jun., 2003 | Ishii.
| |
| 6657126 | Dec., 2003 | Ide et al.
| |
| Foreign Patent Documents |
| 2001-6767 | Jan., 2001 | JP.
| |
Primary Examiner: Mayo, III; William H.
Attorney, Agent or Firm: Sughrue Mion, PLLC
Claims
What is claimed is:
1. A shield-processing structure of a shielded cable comprising:
a shielded cable, including a conductor covered at its outer periphery with a
shielding covering member;
an earth cable;
two resin members which hold the shielded cable and the earth cable to be disposed
in intersecting relation thereto;
a shielded cable-receiving groove for receiving said shielded cable and an earth
cable-receiving groove for receiving said earth cable, said shielded cable-receiving
groove and said earth cable-receiving groove formed in a joint surface of each
of said resin members; and
an earth cable-holding projection which is formed on each of said joint surfaces
in such a manner that said earth cable-holding projection is disposed adjacent
to said shielded cable receiving groove, and projects into said earth cable-receiving groove,
wherein distal end surfaces of said earth cable-holding projections of said two
resin members are disposed closer to each other at their opposite end portions
than at their central portions.
2. A shield-processing structure of a shielded cable according to claim 1, wherein
the opposite end portions of the distal end surface of each of said earth cable-holding
projections are higher than the central portion thereof.
3. A shield-processing structure of a shielded cable according to claim 1, wherein
one end portions of the distal end surfaces of said earth cable-holding projections
which are disposed out of registry with each other are higher than the central
portions thereof.
4. A shield-processing structure of a shielded cable according to claim 1, wherein
each of said joint surfaces has said earth cable-holding projections provided respectively
at opposite sides of said shielded cable-receiving groove.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a shield-processing structure of a shielded cable
which is formed by ultrasonically welding the shielded cable and an earth cable
together, using two resin members.
2. Related Art
One conventional shield-processing structure, using ultrasonic welding, is disclosed
in Unexamined Japanese Patent Publication 2001-6767. This shield-processing structure
is formed, using two resin members
50 and
51 shown respectively in
FIGS. 7A and 7B. The resin members
50 and
51 have shielded cable-receiving
grooves
50b and
51b of an arcuate shape formed respectively
in their joint surfaces
50a and
51a, and a resin-flowing
recess
50c is formed in the joint surface
50a while
resin-flowing recesses
51c are formed in the joint surface
51a.
The resin member
50 has earth cable-holding projections
50d (each
having a flat distal end surface) each formed between the shielded cable-receiving
groove
50b and the resin-flowing recess
50c, while
the resin member
51 has earth cable-holding projections
51d (each
having a flat distal end surface) each formed between the shielded cable-receiving
groove
51b and the corresponding resin-flowing recess
51c.
Next, a shield-processing procedure will be described. An earth cable
53
is placed on a shielded cable
52 (having a conductor
52a covered
at its outer periphery with a braided wire (shielding covering member)
52)
in intersecting relation thereto, and that portion where the earth cable
53
is placed on the shielded cable
52 is held between the two resin members
50 and
51, and ultrasonic vibration is applied from an ultrasonic
horn to the two resin members
50 and
51 while exerting a compressive
force between the upper and lower resin members
50 and
51.
When the ultrasonic vibration is thus applied by the ultrasonic horn, the resin
members
50 and
51, an outer insulating sheath
52d of
the shielded cable
52 and an outer insulating sheath
53b of
the earth cable
53 are melted by the vibration energy produced by application
of the ultrasonic vibration, so that a conductor portion
53a of the
earth cable
53 and the braided wire
52c of the shielded cable
52 are contacted with each other. When the melted portions are solidified
after the application of ultrasonic vibration is finished, the two resin members
50 and
51 are integrally connected together, so that the shielded
cable
52 and the earth cable
53 are joined together.
When the shielded cable
52 and the earth cable
53 are held between
the two resin members
50 and
51 for the purpose of effecting the
ultrasonic welding, the shielded cable
52 is received in the shielded cable-receiving
grooves
50b and
51b of the resin members
50
and
51, while the earth cable
53 is pressed between each mating pair
of earth cable-holding projections
50d and
51d of the
resin members
50 and
51, and in this condition ultrasonic vibration
is applied. Therefore, when the outer insulating sheath
53b of the
earth cable
53 is melted by heat produced upon application of ultrasonic
vibration, the conductor
53a, so far restrained by the outer insulation
sheath
53b, is released, and can freely move over the flat earth
cable-holding projections
50d and
51d. Therefore, the
conductor
53a is disengaged from the earth cable-holding projections
50d and
5d, and are liable to become loose as shown
in FIGS. 11 and 12. When the conductor
53a thus became loose, a cable-holding
force to hold the shielded cable
52 and the earth cable
53 together
was lowered. And besides, good contact between the conductor
53a and
the braided wire
52c was not obtained, so that the electrical connection
performance was lowered.
SUMMARY OF THE INVENTION
Therefore, this invention has been made in order to solve the above problems,
and an object of the invention is to provide a shield-processing structure of a
shielded cable in which troubles due to the disengagement of a conductor from earth
cable-holding projections are prevented, thereby enhancing a cable-holding force
to hold the shielded cable and an earth cable together and a performance of electrical
connection between the two cables.
According to a first aspect of the present invention, there is provided
a shield-processing structure of a shielded cable wherein the shielded cable, having
a conductor covered at its outer periphery with a shielding covering member, and
an earth cable, disposed in intersecting relation to the shielded cable, are held
between two resin members; and ultrasonic vibration is applied to the resin members
while exerting a compressive force between the resin members, so as to melt resin
portions, thereby forming a portion of contact between the shielding covering member
of the shielded cable and a conductor of the earth cable; provided in that a shielded
cable-receiving groove for receiving the shielded cable and an earth cable-receiving
groove for receiving the earth cable are formed in a joint surface of each of the
resin members; and an earth cable-holding projection is formed on each of the joint
surfaces, and is disposed adjacent to the shielded cable-receiving groove, and
projects into the earth cable-receiving groove; and distal end surfaces of the
earth cable-holding projections of the two resin members are disposed closer to
each other at their opposite end portions than at their central portions.
In this shield-processing structure of the shielded cable, when the shielded
cable
and the earth cable are held between the two resin members in the ultrasonic welding
operation, the earth cable is pressed between the earth cable-holding projections
of the two resin members, and an outer insulating sheath of the earth cable and
the earth cable-holding projections are melted upon application of ultrasonic vibration.
In this melting process, the distal end surfaces of the earth cable-holding projections
abut against each other earlier at their opposite end portions than at their central
portions, thereby limiting the movement of the conductor of the earth cable, and
therefore this conductor is prevented from spreading outwardly from the earth cable-holding
projections by vibration.
The shield-processing structure of the shielded cable as defined in a second
aspect of the present invention depending from the first aspect of the present
invention is provided in that the opposite end portions of the distal end surface
of each of the earth cable-holding projections are higher than the central portion thereof.
In this shield-processing structure of the shielded cable, similar effects to
those of the first aspect of the present invention are obtained.
The shield-processing structure of the shielded cable as defined in a third aspect
of the present invention depending from the first aspect of the present invention
is provided in that one end portions of the distal end surfaces of the earth cable-holding
projections which are disposed out of registry with each other are higher than
the central portions thereof.
In this shield-processing structure of the shielded cable, similar effects to
those of the invention of the first aspect of the present invention are obtained.
The shield-processing structure of the shielded cable as defined in a fourth
aspect of the present invention depending from any one of the first to third aspect
of the present invention is provided in that each of the joint surfaces has the
earth cable-holding projections provided respectively at opposite sides of the
shielded cable-receiving groove.
In this shield-processing structure of the shielded cable, the effects of the
first to third aspect of the present invention are obtained, and in addition the
spreading of the conductor of the earth cable is prevented at the opposite sides
of the shielded cable.
As described above, in the first aspect of the present invention; the shielded
cable-receiving groove for receiving the shielded cable and the earth cable-receiving
groove for receiving the earth cable are formed in the joint surface of each of
the two resin members, and the earth cable-holding projection is formed on each
of the joint surfaces, and is disposed adjacent to the shielded cable-receiving
groove, and projects into the earth cable-receiving groove, and the distal end
surfaces of the earth cable-holding projections of the two resin members are disposed
closer to each other at their opposite end portions than at their central portions.
Therefore, when the shielded cable and the earth cable are held between the two
resin members in the ultrasonic welding operation, the earth cable is pressed between
the earth cable-holding projections of the two resin members, and the outer insulating
sheath of the earth cable and the earth cable-holding projections are melted upon
application of ultrasonic vibration. In this melting process, the distal end surfaces
of the earth cable-holding projections abut against each other earlier at their
opposite end portions than at their central portions, thereby limiting the movement
of the conductor of the earth cable. Therefore, this conductor is prevented from
spreading outwardly from the earth cable-holding projections by vibration. Therefore,
the conductor will not be disengaged from the earth cable-holding projections,
but contacts the shielding covering member of the shielded cable in a bundled condition.
Therefore, a cable holding force to hold the shielded cable and the earth cable
together, as well as the performance of electrical connection between the two cables,
is enhanced.
In the second aspect of the present invention, the opposite end portions of the
distal end surface of each of the earth cable-holding projections are higher than
the central portion thereof, and therefore similar effects to those of the first
aspect of the present invention are obtained.
In the third aspect of the present invention, one end portions of the distal
end
surfaces of the earth cable-holding projections which are disposed out of registry
with each other are higher than the central portions thereof, and therefore similar
effects to those of the first aspect of the present invention are obtained.
In the fourth aspect of the present invention, each of the joint surfaces has
the earth cable-holding projections provided respectively at the opposite sides
of the shielded cable-receiving groove, and therefore the spreading of the conductor
of the earth cable is prevented at the opposite sides of the shielded cable. Therefore,
the cable holding force to hold the shielded cable and the earth cable together,
as well as the performance of electrical connection between the two cables, is
further enhanced.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a first embodiment of the invention, and is an exploded perspective
view explanatory of a shield-processing method.
FIG. 2 shows the first embodiment of the invention, and is a perspective view
of a resin member.
FIG. 3 shows the first embodiment of the invention, and is a cross-sectional
view of an ultrasonically-welded portion.
FIG. 4 shows the first embodiment of the invention, and is a perspective view
showing a condition in which a conductor of an earth cable is not spread out, but
is disposed in a bundled condition.
FIG. 5 shows the first embodiment of the invention, and is a side-elevational
view showing a condition in which the conductor of the earth cable is not spread
out, but is kept bundled by earth cable-holding projections of the two resin members.
FIG. 6 shows a second embodiment of the invention, and is a side-elevational
view showing a condition in which a conductor of an earth cable is not spread out,
but is kept bundled by earth cable-holding projections of two resin members.
FIG. 7 shows a conventional example, and FIG. 7A is a perspective view of a
resin member to be disposed at an upper side, and FIG. 7B is a perspective view
of a resin member to be disposed at a lower side.
FIG. 8 shows the conventional example, and is a perspective view of an ultrasonically-welded portion.
FIG. 9 shows the conventional example, and is a cross-sectional view taken along
the line A—A of FIG. 8.
FIG. 10 shows the conventional example, and is a cross-sectional view taken
along the line B—B of FIG. 8.
FIG. 11 shows the conventional example, and is a perspective view showing a
condition in which a conductor of an earth cable is spread out.
FIG. 12 shows the conventional example, and is a side-elevational view showing
a condition in which the conductor of the earth cable is spread out by earth cable-holding
projections of two resin members.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
A preferred embodiment of the present invention will now be described with reference
to the drawings.
As shown in FIG. 1 of a first embodiment, a shielded cable
1 comprises
two conductors
1a and
1a twisted together, inner insulating
sheaths
1b and
1b which are made of a resin, and cover
outer peripheries of the conductors
1a and
1a, respectively,
a braided wire
1c (serving as a shielding covering member) covering
outer peripheries of the inner insulating sheaths
1b and
1b,
and an outer insulating sheath
1d covering an outer periphery of
the braided wire
1c.
The earth cable
2 comprises the conductor
2a, and an outer
insulating sheath
2b which is made of a resin, and covers an outer
periphery of the conductor
2a.
As shown in FIGS. 1 and 2, the pair of resin members
3 and
3 are
of the same construction, and each of the resin members
3 has a joint surface
3a. A shielded cable-receiving groove
15 of a generally arcuate
shape for receiving the shielded cable
1, as well as an earth cable-receiving
groove
16 of a generally arcuate shape for receiving the earth cable
2,
is formed in each joint surface
3a. The shielded cable-receiving
groove
15 and the earth cable-receiving groove
16 are arranged to
perpendicularly intersect each other. The earth cable-holding projections
17
are formed on each joint surface
3a, and are disposed adjacent respectively
to opposite sides of the shielded cable-receiving groove
15, and project
into the earth cable-receiving groove
16. Opposite end portions
17a
of a distal end surface of each earth cable-holding projection
17 are
higher than a central portion
17b thereof. The opposite end surfaces
17a and
17a are defined respectively by slanting surfaces
each increasing in height gradually from its inner end toward its outer (distal)
end. With this construction, the opposed distal end surfaces of the mating pair
of earth cable-holding projections
17 and
17 of the two resin members
are disposed closer to each other at their opposite end portions
17a
than at their central portions
17b.
A resin-flowing recess
18 of a generally annular shape is formed in each
joint surface
3a, and is disposed around the earth cable-holding
projections
17. The resin-flowing recess
18 is provided so that molten
resin of the earth cable-holding projections
17 and others can flow into
this resin-flowing recess
18, thereby preventing the molten resin from flowing
outwardly from the pair of upper and lower resin members
3 and
3.
Outer marginal surfaces
19 are formed respectively at four portions
(disposed on diagonal lines) of the resin member disposed outwardly of the resin-flowing
recess
18. Projections
20 are formed respectively on the outer marginal
surfaces
19 disposed on one diagonal line, while holes
21 are formed
respectively in the outer marginal surfaces
19 disposed on the other diagonal
line. Namely, when the pair of upper and lower resin members
3 and
3
are mated with each other at their joint surfaces
3a and
3a,
the projections
20 of each resin member
3 are inserted respectively
into the holes
21 in the mating resin member
3, so that the two resin
members
3 are combined together.
As shown in FIG. 2, a resin-flowing groove (not shown) is formed in a bottom
surface
of each hole
21. These resin-flowing grooves are provided so that a molten
resin of the projections
20 and others can flow into these resin-flowing
grooves, thereby preventing the molten resin from flowing outwardly from the pair
of upper and lower resin members
3 and
3. Furthermore, the bottom
surface of each hole
21 is formed as a slanting surface, and therefore when
a distal end surface of the projection
20 abuts against the bottom surface
of the hole
21, the two are held in line contact with each other.
When ultrasonic vibration is to be applied, the shielded cable
1 and
the earth cable
2 are held between the pair of upper and lower resin members
3 and
3, and in this condition the surfaces of the shielded cable-receiving
grooves
15 and
15 of the two resin members are held in intimate contact
with the shielded cable
1, while the surfaces of the earth cable-receiving
grooves
16 and
16 of the two resin members are held in intimate contact
with the earth cable
2 as shown in FIG. 3, and also each projection
20
is held in intimate contact with the bottom surface of the corresponding hole
21.
As shown in FIG. 1, an ultrasonic horn
4 comprises a lower support base
5, and an ultrasonic horn body
6 located right above this lower support
base
5 so as to produce ultrasonic vibrations. The lower support base
5
and the ultrasonic horn body
6 are so provided that they can move upward
and downward separately from each other. The resin member
3 can be set on
an upper surface of the lower support base
5, and the thus set resin member
3 is held in this condition, with its joint surface
3a facing
upwardly. The other resin member
3 can be set at a lower surface of the
ultrasonic horn body
6, and the thus set resin member
3 is held in
this condition, with its joint surface
3a facing downwardly.
A shield-processing jig
7 has a resin-mounting opening
8 extending
vertically therethrough, and a pair of cable insertion grooves
9 and
9
are formed respectively in right and left portions of this jig
17 disposed
outwardly of the resin-mounting opening
8. The distance between the pair
of cable insertion grooves
9 and
9 is substantially equal to a half
of a pitch P of twisting of the conductors
1a and
1a (that
is, P/
2), and each of these grooves
9 has such a width that the two
conductors
1a and
1a (twisted together) are allowed
to be inserted or fitted into the groove
9 only at their portions arranged
parallel to each other in the vertical direction. In this embodiment, the twist
pitch P is about 30 mm. An inlet portion of each of the cable insertion grooves
9 and
9 is defined by tapering surfaces
9a and
9a,
and is decreasing in width gradually in the cable inserting direction.
An earth cable insertion groove
10 and a reference recess
11 are
formed in the shield-processing jig
7, and are disposed outwardly of the
resin-mounting opening
8, and are disposed on a line perpendicularly intersecting
a line interconnecting the pair of cable insertion grooves
9 and
9.
The earth cable
2, when inserted into the earth cable insertion groove
10,
is set in a middle position between the pair of cable insertion grooves
9
and
9.
Next, the shield-processing method, using the shield-processing jig
7,
will be described.
As shown in FIG. 1, the resin members
3 and
3 are set at the lower
surface of the ultrasonic horn body
6 and the upper surface of the lower
support base
5, respectively. The shielded cable
1 is inserted into
the pair of cable insertion grooves
9 and
9 in the shield-processing
jig
7. Here, the shielded cable
1 can be inserted into the cable
insertion grooves
9 and
9 only at those portions thereof where the
two conductors
1a and
1a (twisted together) are arranged
parallel to each other in the vertical direction.
Then, the earth cable
2 is inserted into the earth cable insertion groove
10 in the shield-processing jig
7, and is inserted to be advanced
until the distal end of the earth cable
2 is brought into a butting engagement
with the reference recess
11. As a result, the earth cable
2 is substantially
held in contact with the upper surface of the shielded cable
1, and is disposed
in intersecting relation to the shielded cable
1.
Then, the earth cable
2 is pulled back in such a predetermined amount
that the distal end of the earth cable
2 will not project outwardly from
the pair of upper and lower resin members
3 and
3, and the lower
support base
5 is moved upward while the ultrasonic horn body
6 is
moved downward, so that the joint surfaces
3a and
3a of
the pair of upper and lower resin members
3 and
3 are mated with
each other. As a result, the pair of upper and lower resin members
3 and
3 hold the shielded cable
1 and the earth cable
2 therebetween,
and the shielded cable
1 is fitted between the shielded cable-receiving
grooves
15 and
15 of the two resin members while the earth cable
2 is fitted between the earth cable-receiving grooves
16 and
16
of the two resin members. The projections
20 of each of the two resin members
3 and
3 are inserted respectively into the holes
21 of the
corresponding resin member
3, so that the pair of resin members
3
and
3 are positioned relative to each other.
Then, ultrasonic vibration is applied to the two resin members while exerting
a compressive force between the ultrasonic horn body
6 and the lower support
base
5. As a result, the outer insulating sheath
1d of the
shielded cable
1 and the outer insulating sheath
2b of the
earth cable
2 are melted and dissipated by heat produced by the vibration
energy, so that the conductor
2a of the earth cable
2 contacts
the braided wire
1c of the shielded cable
1. Also, the portions
of contact between the joint surfaces
3a and
3a of
the pair of resin members
3 and
3, the portions of contact between
the surfaces of the shielded cable-receiving grooves
15 and
15 (formed
respectively in the pair of resin members
3 and
3) and the outer
insulating sheath
1d of the shielded cable
1, and the portions
of contact between the surfaces of the earth cable-receiving grooves
16
and
16 (formed respectively in the pair of resin members
3 and
3)
and the outer insulating sheath
2b of the earth cable
2 are
melted by the heat produced by the vibration energy, and these molten portions
are solidified after the application of ultrasonic vibration is finished, so that
the pair of resin members
3 and
3, the shielded cable
1 and
the earth cable
2 are fixed to one another (see FIG. 3).
Next, the welding of the earth cable
2 during the application of ultrasonic
vibration will be described.
When the shielded cable
1 and the earth cable
2 are held between
the pair of upper and lower resin members
3 and
3, the earth cable
2 is pressed between each mating pair of earth cable-holding projections
17 and
17 of the two resin members
3 and
3, and the
outer insulating sheath
2b of the earth cable
2 and each mating
pair of the earth cable-holding projections
17 and
17 are melted
upon application of ultrasonic vibration. In this melting process, the distal end
surfaces of the mating earth cable-holding projections
17 and
17
abut against each other earlier at their opposite end portions
17a than
at their central portions
17b, thereby limiting the movement of the
conductor
2a of the earth cable
2, and therefore the conductor
2a is prevented from spreading outwardly from the earth cable-holding
projections
17 and
17 by vibration. Therefore, the conductor
2a
is not disengaged from the earth cable-holding projections
17, but contacts
the shielding covering member
1c of the shielded cable
1 in
a bundled condition. Therefore, the cable holding force to hold the shielded cable
1 and the earth cable
2 together, as well as the performance of electrical
connection between the two cables, is enhanced.
In this first embodiment, the earth cable-holding projections
17 are provided
at the opposite sides of the shielded cable-receiving groove
15, respectively,
and therefore the spreading of the conductor
2a of the earth cable
2 is prevented at the opposite sides of the shielded cable
1, and
the conductor
2a contacts the braided wire
1c in a
bundled condition, so that the cable holding force to hold the shielded cable
1
and the earth cable
2 together, as well as the performance of electrical
connection between the two cables, is further enhanced.
FIG. 6 shows a second embodiment of the invention, and is a side-elevational
view showing a condition in which a conductor of an earth cable is not spread out,
but is kept bundled by earth cable-holding projections of two resin members.
In this second embodiment, the earth cable-holding projections
17 and
17
are formed on a joint surface of each of the pair of resin members
3 and
3 as in the first embodiment, and one end portions
17a (which
are disposed out of registry with each other) of distal end surfaces of each mating
pair of earth cable-holding projections
17 and
17 of the two resin
members
3 and
3 are higher than central portions
17b thereof
as indicated in imaginary lines in FIG. 6. With this construction, the mating pair
of earth cable-holding projections
17 and
17 of the two resin members
are disposed closer to each other at their opposite end portions
17a
than at their central portions
17b. The other construction is
similar to that of the first embodiment, and therefore detailed explanation thereof
will be omitted.
In this second embodiment, also, during the melting process, the distal end surfaces
of the mating earth cable-holding projections
17 and
17 abut against
each other earlier at their opposite end portions
17a than at their
central portions
17b, thereby limiting the movement of the conductor
2a of the earth cable
2, and therefore the conductor
2a
is prevented from spreading outwardly from the earth cable-holding projections
17 and
17 by vibration. Therefore, the conductor
2a will
not be disengaged from the earth cable-holding projections
17, but contacts
a shielding covering member of a shielded conductor
1 in a bundled condition.
Therefore, the cable holding force to hold the shielded cable
1 and the
earth cable
2 together, as well as the performance of electrical connection
between the two cables, is enhanced.
In the above embodiments, although the shielding covering member of the shielded
cable
1 comprises the braided wire
1c, it may comprise any
other suitable electrically-conductive member in so far as it can cover the two
inner insulating sheaths
1b and
1b substantially over
the entire periphery thereof. For example, an electrically-conductive metal foil
may be used to form the shielding covering member. Although the above description
has been directed to the shield-processing structure in which the shielded cable
1, having the two conductors
1a and
1a (twisted
together), is subjected to the shield-processing, the invention can be applied
also to a shielded cable having one or more than two conductors
1a and
to a shielded cable having conductors which are not twisted together.
*
