JP2003051693A - Structure of connection of shield wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of connection of a shield wire that is superior in shielding effects upon noises generated in the shield wire. SOLUTION: A recessed shield cover receiving part 40 is provided on one side of a conductive head cover H that is provided on the upper side of an engine body, and a connector 30 to be connected is provided in the nearly the center part of the bottom of the shield cover receiving part 40. A shield cover 50 is made of a conductive material and is formed into box-like shape whose bottom has an opening. The shielding cover 50 covers the peeled-off part of a shield 3 of a connector 10 connector-connected with the connector 30 and a shield wire 1 extending from the connector 10 and is secured to the shielding cover receiving part 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a connecting portion of a shield wire used for wiring an electromagnetically driven valve of a valve in an internal combustion engine such as an automobile.

[0002]

2. Description of the Related Art In recent years, electronic control of internal combustion engines has progressed, and various electric components are arranged in the internal combustion engine, and a large number of wiring members are routed to each electric component.

When the wiring material is connected to an actuator such as an electromagnetically driven valve of a valve, a high voltage for driving the actuator is intermittently applied to the wiring material. Noise may propagate to other sensors or harnesses adjacent to the wiring material.

Therefore, as the wiring material for the drive circuit of the actuator, a shielded wire in which a shield such as a braided layer is provided around the electric wire is used.

When connecting the shielded wire to the actuator as described above, for example, a terminal treatment as shown in FIG. 13 is performed.

That is, in this shielded wire 100, a shield 102 made of a braided layer is formed on the outer periphery of a plurality of electric wires 101, and a covering portion 103 made of an insulating resin is further formed on the outer periphery thereof.

At the end of the shielded wire 100, the covering portion 103 is peeled off over a predetermined length, and the shield 102 and the plurality of electric wires 101 extend to the peeled off portion.

The extending shield 102 is pulled out to the side of the shielded wire 100 and connected to the round terminal 103b via another electric wire 103a.
Grounded through.

Further, each extending electric wire 101 is guided to a connector 105 and appropriately connected to each terminal in the connector. Then, by connecting the connector 105 to a connector provided on the engine side, the shielded wire 10
The electric wire 101 in 0 is electrically connected to the actuator in the engine.

[0010]

However, at the connection portion of the shielded wire, the connector 105 is attached to each electric wire 101.
In order to crimp the terminals of the
It is necessary to peel off the shield 102 and the electric wires 101 to separate them. Therefore, each wire 101
At the end of the, a portion not shielded by the shield 102 occurs, and noise leaks from the portion.

Therefore, an object of the present invention is to provide a structure of a connecting portion of a shielded wire which has an excellent effect of shielding noise generated from the shielded wire.

[0012]

[Means for Solving the Problems] In order to solve the above problems,
The structure of the shield wire connecting portion according to claim 1 is a structure of a shield wire connecting portion which is connector-connected to a drive system electric component provided in an engine, wherein a shield is provided around an outer periphery of the electric wire, and A shield is provided on the outer periphery, the shield wire and the shield are stripped off from the end for a predetermined length, a connector attached to the end of the shield wire, and grounded on the upper side of the engine body. And a connected connector for connecting the electric wire to the drive system electrical component by connector connection with the connector, the conductive head cover being provided in one side of the conductive head cover, A shield cover receiving portion having an annular receiving surface formed so as to surround the connected connector is provided on one side of the head cover, and the annular receiving surface is made of a conductive material. A shield cover formed on the container having a corresponding opening peripheral portion covers the connector connected to the connector to be connected and the peeled portion of the shield of the shield wire extending from the connector, It is attached to the shield cover receiving portion such that the peripheral edge of the opening is brought into contact with the annular receiving surface.

According to the second aspect of the present invention, the shield cover receiving portion may be formed with a notch insertion portion at the side edge portion thereof so that the shield wire can be inserted and arranged from the side of the shield cover receiving portion. Good.

In the case where a plurality of shield wires extend from the connector, as described in claim 3, the end portions of the shield wires are electrically connected to the shields so that the shield wires are electrically connected to the ends. A plurality of tubular parts that are fitted and fixed, and the respective tubular parts that are fitted and fixed to each other so that the shield wires are held in such a posture that they can be inserted and arranged in the notch insertion part, are connected to each other. A conductive bracket body having a supporting plate-shaped portion is further provided, and the plate-shaped portion of the bracket body has an annular receiving portion of the shield cover receiving portion so as to electrically contact at least a peripheral portion of the notch insertion portion. It may be sandwiched between the surface and the peripheral edge of the opening of the shield cover.

Further, as described in claim 4, the opening peripheral edge portion of the shield cover is from a surface opposite to a surface where the plate-shaped portion of the conductive bracket body contacts the peripheral edge portion of the notch insertion portion. It may be in contact with the plate-shaped portion.

According to a fifth aspect of the present invention, the auxiliary bracket body made of a conductive material is hung over the side opening of the notch insertion portion in a state of being in electrical contact with the shield cover receiving portion. The plate portion of the conductive bracket body may be supported by the supplementary bracket body in a state of being in electrical contact from the side opposite to the opening peripheral edge portion of the shield cover.

Further, as described in claim 6, between the peripheral edge portion of the opening of the shield cover and the annular receiving surface of the shield cover receiving portion, the plate-like portion of the conductive bracket body or the auxiliary bracket body, A sealing material may be interposed in a ring shape so as to surround the connected connector and the outer circumference of each of the cylindrical portions.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION {First Embodiment} A structure of a shield wire connecting portion according to a first embodiment of the present invention will be described below.

The structure of the connecting portion of this shielded wire is shown in FIGS.
As shown in FIG. 5, it is assumed that the shielded wire 1 is connected to a drive system electric component P provided in the engine by a connector.

Here, the drive system electrical component P provided in the engine is a drive system electrical component provided in a cylinder head of the engine, etc., and it is necessary to apply a high drive voltage through the shielded wire 1. Things are supposed.
In the present embodiment, as the drive system electric component P, an electromagnetically driven valve P in which a valve provided in the cylinder head is opened and closed by an electromagnetic coil is assumed. As other drive system electric components, for example, an injector or the like in a direct injection diesel engine is assumed.

The structure of the connecting portion of the shielded wire is roughly composed of a plurality of (four in the present embodiment) shielded wires 1,
A connector 10 attached to the end of each shielded wire 1,
A connector 30 provided on one side of the conductive head cover H disposed on the upper side of the engine body E including the cylinder head and the like.

Each of the shielded wires 1 is a collection of general electric wires 2 each having a coating formed around the conductor wire. A shield 3 is provided on the outer periphery of the assembled electric wires 2 and an insulating resin is further provided on the outer periphery thereof. A coating portion 4 such as a product is formed. The shield 3 is formed, for example, by braiding fine metal wires. In addition, in the present embodiment, a configuration including a plurality of shielded wires 1 will be described, but the same can be applied to a configuration including a single shielded wire 1. Further, although each shielded wire 1 is configured to include a plurality of electric wires 2, the shielded wire 1 includes a single electric wire 2.
May be

Further, the shield 3 and the covering portion 4 are peeled off from the end portion of the shielded wire 1 over a predetermined length, and the electric wires 2 are extended to the tip end side over a predetermined length in an unbound state. (See FIGS. 2 and 3).

As shown in FIGS. 2 and 3, the connector 10 is attached to the end portion of each shielded wire 1,
More specifically, it has an electric wire introducing portion 11 at its rear end portion and a connection port portion 12 at its lower end portion. A connector terminal (not shown) is provided in the connection port portion 12, and each connector terminal is connected to the connected connector 30 by connecting the connection port portion 12 to a mating connector 30 (described later). Will be connected to the connected connector terminal inside.

Then, each electric wire 2 of each shielded wire 1 is introduced into the connector 10 through the electric wire introducing portion 11,
The connector 10 is attached to the end of each shielded wire 1 by electrically connecting to the connector terminal by crimping, soldering, or the like as appropriate.

The connected connector 30 is provided on one side of the conductive head cover H, as shown in FIGS. 2 and 3, and is connected to the connector 10 to connect the electric wires 2 to the drive system electrical equipment. It is configured to be connectable to the part P.

More specifically, the connected connector 30 is
A shield cover receiving portion 40, which will be described later, has an upper connection port portion
Is embedded in the shield cover receiving portion 40 so as to be exposed above. Connected connector terminals that can be fitted and connected to the connector terminals on the connector 10 side are provided in the connected port portions, and each connected connector terminal passes through the conductive head cover H and a bus bar (not shown) is shown. A circuit body having a predetermined pattern formed by punching and bending a thick metal plate into a predetermined shape: In the present embodiment, the circuit body is electrically connected to the drive system electrical component P via a screw-fastened to the engine body E). To be done.

By connecting the connector 10 to the connector 30 to be connected, each shielded wire 1
Will be electrically connected to each drive system electrical component P via each connector terminal, each connected connector terminal, and the bus bar.

A shield cover receiving portion 40 having an annular receiving surface 40f formed so as to surround the connected connector 30 is provided on one side of the conductive head cover H.

More specifically, in the present embodiment, one side portion of the conductive head cover H is projected toward the outside of one side portion of the engine body E, and the projected portion is a recessed portion having a corner shape. By forming the shield cover receiving portion 4
Forming 0. In addition, the shield cover receiving portion 40
The connected connector 30 is embedded in a substantially central portion of the bottom surface of the shield cover 40, and a portion of the bottom surface of the shield cover receiving portion 40 that surrounds the connected connector 30 has an annular receiving surface 4 that is substantially rectangular in a plan view.
It is formed at 0f.

When the connector 10 is connected to the connector 30 to be connected, the connector 10 is arranged in the annular receiving surface 40f of the shield cover receiving portion 40. Incidentally, at least a portion of the conductive head cover H that constitutes the shield cover receiving portion 40 is formed of a conductive material such as metal, and is electrically connected to the engine body E portion and grounded.

In the present embodiment, the screw insertion hole 10a is formed in the substantially central portion of the connector 10 in plan view, and the screw hole 30a is formed in the portion of the connected connector 30 corresponding to the screw insertion hole 10a. ing. Also, the connector 1
The flange portion 14 protruding outward along the outer peripheral direction of the lower part of 0 is formed to form the screw insertion hole 10b at each corner of the flange portion 14, and each of the annular receiving surfaces 40f described above is formed. The screw hole 40a is formed in each part corresponding to the screw insertion hole 10b. And this connector 1
In the state where 0 is connected to the connected connector 30, the screw S1 is passed through the screw insertion hole 10a to be screwed into the screw hole 30a formed on the connected connector 30 side, and a plurality of screws S2 (see FIG. The reference state) is passed through the screw insertion hole 10b and screwed into the screw hole 40a formed on the annular receiving surface 40f side so that the connection state is more reliably maintained.

Further, in the present embodiment, the flange portion 14 and the annular receiving surface 40f are in contact with each other around the connected connector 30, and there is a space between the flange portion 14 and the annular receiving surface 40f. In addition, the seal material 39 is annularly interposed to prevent the oil from scattering from the engine body E (especially the cylinder head) side.

Further, the shield cover receiving portion 40 has
The shield cover 50 is attached.

The shield cover 50 is made of a conductive material such as metal as shown in FIGS.
It is formed in a container having an opening peripheral edge portion 51 corresponding to f.

In the present embodiment, the shield cover 50
Has a substantially box-like overall shape that can be housed in the shield cover receiving portion 40, and has a bottom portion opened to correspond to the substantially rectangular annular receiving surface 40 f and a substantially rectangular opening peripheral edge portion 51.
Is formed.

The shield cover 50 includes the connector 10 connected to the connector 30 to be connected and the shield 3 of the shield wire 1 extending from the connector 10.
Is attached to the shield cover receiving portion 40 so as to cover the peeled portion (extending portion of each electric wire 2) and its opening peripheral edge portion 51 abut on the annular receiving surface 40f.

That is, in this embodiment, the connector 1 is used.
When 0 is connected to the connected connector 30, the connector 10 is arranged in the annular receiving surface 40f. Further, in the shielded wire 1 extending from the connector 10, the shield 3 is peeled off over a predetermined length in the vicinity of the portion drawn out from the connector 10. And the shield cover 5
0 is attached to the shield cover receiving portion 40 so as to cover the shield 3 peeled portion of the connector 10 and the shield wire 1 from above.

In the present embodiment, the four side vertical sides of the shield cover 50 are formed in a groove shape along each side direction, and the flange portion 52 is formed at each lower portion thereof.
A screw insertion hole 52a is formed in each flange portion 52, and a screw hole 40b is formed in a portion of the shield cover receiving portion 40 corresponding to each screw insertion hole 52a. Then, when the shield cover 50 is attached to the shield cover receiving portion 40, the screw S3 (see FIG. 3) is passed through the screw insertion holes 52a and screwed into the screw holes 40b, so that the shield cover receiving portion 40 of the shield cover 50 is attached. It is designed to hold the attachment state to.

The shield cover 50 is grounded to the shield cover receiving portion 40 through contact with the annular receiving surface 40f of the shield cover receiving portion 40 or by utilizing the structure in which the screw S3 is screwed into the screw hole 40b. It

Further, in the present embodiment, each shielded wire 1
The following configuration is adopted as a configuration for drawing out from the space between the shield cover receiving portion 40 and the shield cover 50 to the outside.

That is, as shown in FIGS. 2 to 4, at the side edge of the shield cover receiving portion 40, there is provided a notch insertion portion 43 into which each shield wire 1 can be inserted and arranged from the side of the shield cover receiving portion 40. It is formed.

Specifically, the direction in which the side edge portion of the shield cover receiving portion 40 extends is provided at the side edge portion of the shield cover receiving portion 40, which is the protruding end portion of the conductive head cover H protruding laterally of the engine body E. A notch insertion portion 43 having a substantially elliptical shape in a plan view, which is long along the, and a long side portion on one side thereof is opened outward is formed. The notch insertion portion 43 has a length dimension that allows a plurality of (four in the present embodiment) shielded wires 1 to be inserted in a row along the extending direction of the side edge portion, and The depth of the shielded wire 1 is slightly larger than the diameter of the shielded wire 1. Then, connect each shield wire 1 to the shield cover receiving portion 4
The shield cover 50 can be attached to the shield cover receiving portion 40 in a state where the shield cover 50 is inserted and arranged in the notch insertion portion 43 while being arranged in parallel from the side of 0. In this state, each shield wire 1 is pulled out to the outside through the cutout insertion portion 43 between the annular receiving surface 40f and the opening peripheral edge portion 51 of the shield cover 50.

Further, in the present embodiment, each shielded wire 1
The following configuration is adopted as a configuration for grounding the shield 3 of.

That is, the structure of the connection portion of the shielded wire 1 is as follows.
As shown in FIGS. 2 to 5, a plurality of tubular portions 56, which are externally fitted and fixed to the end portions of the respective shielded wires 1 so as to electrically contact the respective shields 3, and the respective tubular portions 56. A conductive bracket body 55 having a plate-like portion 57 that connects and supports the respective tubular portions 56 so that the shielded wires 1 that are fitted and fixed to the outside can be held in the notch insertion portion 43 in a position where they can be inserted and arranged. Is further equipped. Then, the plate-shaped portion 57 is sandwiched between the annular receiving surface 40f of the shield cover receiving portion 40 and the opening peripheral edge portion 51 of the shield cover 50 so as to electrically contact at least the peripheral edge portion of the notch insertion portion 43. It is composed.

More specifically, the conductive bracket body 55
Is made of a conductive material such as metal, and has a plurality of (four in the present embodiment, four according to the number of shielded wires 1) cylinders in the long plate-like plate portion 57 along the longitudinal direction thereof. Shape 5
6 are arranged in parallel and project upward.

The plate portion 57 is formed in the shape of a long plate having a shape larger than the shape of the notch insertion portion 43 in plan view. In addition, the notch insertion portion 43 of the shield cover receiving portion 40.
A positioning accommodating recessed step portion 44 having a shape in plan view corresponding to the shape of the plate-shaped portion 57 in plan view and having a depth dimension substantially the same as the thickness dimension of the plate-shaped portion 57 is formed on the peripheral edge portion of the. The plate-shaped portion 57 can be placed on the shield cover receiving portion 40 so as to be accommodated in the positioning accommodating concave step portion 44. In the state of being placed in this manner, the plate-like portion 57 is provided with the notch insertion portion 43.
When the shield cover 50 is attached and fixed to the shield cover receiving portion 40 in this state, the opening peripheral edge portion 51 of the shield cover 50 becomes a conductive bracket body. 55 plate-like portion 57
From the upper surface (the surface on the side opposite to the surface where the plate-shaped portion 57 contacts the bottom surface of the positioning accommodation concave step portion 44) comes into contact with the plate-shaped portion 57 (see FIG. 4).

Each of the tubular portions 56 is fixed to the plate portion 57 at a predetermined interval, and is formed in a substantially tubular shape having an inner diameter corresponding to the shield 3 portion of the shield wire 1. Then, the covering portion 4 of the shielded wire 1 is peeled off over a predetermined length to expose the shield 3, and the tubular portion 56 is externally fitted to the exposed portion of the shield 3 and fixed by caulking or the like to form a tubular shape. The portion 56 is externally fitted and fixed to the shield wire 1 in a state where the portion 56 is in electrical contact with the shield 3. The tubular portions 56 are formed in parallel so as to project above the portion of the plate portion 57 provided on the notch insertion portion 43. Then, in a state where the conductive bracket body 55 is attached to the side edge portion of the shield cover receiving portion 40 such that the plate-shaped portion 57 is accommodated and arranged in the positioning accommodating recessed step portion 44, the inside of each tubular portion 56. Each of the shielded wires 1 fixed to the above is drawn downward from the plate-like portion 57 and can be extended to the outside through the notch insertion portion 43. From the viewpoint of waterproofing, it is preferable to insert-mold (mold-mold) a portion of each tubular portion 56 fitted onto the shielded wire 1 into a resin such as urethane.

In this structure, the shield 3 of each shielded wire 1 is electrically connected to each tubular portion 56 of the conductive bracket body 55, and the plate-shaped portion 5 of the conductive bracket body 55 is also provided.
7 is in a state of being in electrical contact with at least the peripheral portion of the notch insertion portion 43 (see FIGS. 4 and 5). For this reason, the shield of each shielded wire 1 includes the tubular portion 56 to the plate-shaped portion 57.
It is grounded to the peripheral portion of the notch insertion portion 43, that is, the shield cover receiving portion 40 via the.

In the present embodiment, the screw insertion holes 57a are formed at both ends of the plate portion 57, respectively, and
Screw holes 44a are formed in portions of both ends of the positioning accommodating recessed step portion 44 corresponding to the screw insertion holes 57a, and the conductive bracket body 55 is attached to the shield cover receiving portion 40.
With a state of being attached to the side edge portion of the above, a pair of screws S4 are passed through the screw insertion holes 57a and screwed into the screw holes 44a, so that the attached state can be more reliably maintained (FIG. 3 and FIG. (See FIG. 5).

The structure of the connecting portion of the shielded wire 1 thus constructed is assembled as follows.

First, the shield 3 and the covering portion 4 are peeled off from the end portion of each shielded wire 1 for a predetermined length to expose each electric wire 2 in a non-bundled state for a predetermined length. Further, the covering portion 4 is peeled off for a predetermined length to expose the shield 3 for a predetermined length. Then, each shielded wire 1 is passed through each tubular portion 56 of the conductive bracket body 55, and each tubular portion 56 is inserted.
Is fitted on the exposed portion of the shield 3 of the shielded wire 1 and fixed by means such as caulking. In addition, each electric wire 2 exposed in the unbound state at the end of each shielded wire 1 is connected to the connector 1
The connector 10 is attached to the end portion of each shielded wire 1 by connecting to the connector terminal inside 0 (see FIG. 3).

Next, the connector 10 is connected to the connector 30
And screw S1 into the screw insertion hole 10a so as to be screwed into the screw hole 30a formed on the connected connector 30 side, and a plurality of screws S2 are inserted into the screw insertion hole 10b to make the conductive head cover. Screw hole 40 formed on the H side
Screw it to a. Here, in addition to the plurality of screws S2, one larger screw S1 is used in the center for the following reason. That is, at the connection portion of the shielded wire 1, the connector 10 is upsized due to the large number of terminals and high voltage. For this reason, a large insertion load is required when connecting the connector 10 to the connected connector 30, and the initial fixing with the screw S1 is required.

At the same time as or before or after the screws S1 and S2 are screwed together, a portion of each shield wire 1 below the conductive bracket body 55 is provided with a notch insertion portion of the shield cover receiving portion 40. 43 is inserted and arranged from the side, and the plate-like portion 57 is accommodated and arranged in the positioning accommodating concave step portion 44, and the conductive bracket body 55 is attached to the side edge portion of the shield cover receiving portion 40. S4 screw through hole 57
It is passed through the inside of a and screwed into the screw hole 44a (see FIGS. 2 to 5).

Finally, the shield cover 50 is attached to the shield cover receiving portion 40 so as to cover the connector 10 and the shielded portion of the shielded wire 1 from above, and the screw S3 is passed through each screw insertion hole 52a. Screw hole 40
When screwed into b, the structure of the connecting portion of the shielded wire 1 is assembled (see FIGS. 1 to 3).

According to the structure of the connecting portion of the shielded wire 1 constructed as described above, the shield cover receiving member having the annular receiving surface 40f formed on one side of the conductive head cover H so as to surround the connected connector 30 is provided. The shield cover 50 is provided with the portion 40 and is formed of a conductive material in a container having an opening peripheral portion 51 corresponding to the annular receiving surface 40f.
Covers the connector 10 connected to the connected connector 30 and the stripped portion of the shield 3 of the shield wire 1 extending from the connector 10, and makes the opening peripheral edge 51 abut on the annular receiving surface 40f. In this way, since the shield 3 is attached to the shield cover receiving portion 40, the peeled portion of the shield 3 of the shield wire 1 extending from the connector 10 is the shield cover receiving portion 4 of the conductive head cover H.
0 and because it is wrapped in the shield cover 50,
The noise generated from the shielded wire 1 is shielded by the shield cover receiving portion 40 and the shield cover 50, and the noise shielding effect is excellent.

As a derivative effect, since the connection portion between the connector 10 and the connected connector 30 and the portion where the electric wire 2 is disjointed can be hidden in the shield cover 50, the appearance can be improved.

Further, when the notch insertion portion 43 into which the shield wire 1 can be inserted and arranged from the side of the shield cover receiving portion 40 is formed at the side edge portion of the shield cover receiving portion 40, the shield wire 1 becomes the notch insertion portion 43. Insert and place shield cover 50
Since the shield cover 50 can be attached to the shield cover receiving portion 40 by pulling it out from the inside,
The assembling property of the connection portion of the shielded wire 1 is excellent.

In particular, since each shield wire 1 can be inserted and arranged in the notch insertion portion 43 from the side of the shield cover receiving portion 40, the connector 10 attached to the end portion of the shield wire 1 can be arranged.
There is no need to make a large opening shape for inserting
Since it is only necessary to form the opening shape so that each shield wire 1 can be inserted, it is possible to reduce the size of the notch insertion portion 43, and thus the structure of the main connection portion.

By the way, in the configuration of the conventional example as shown in FIG. 13, the shields 102 of the respective shielded wires 100 are grounded one by one using the round terminals 103b and the like, so that the shields 102 of the plurality of shielded wires 100 are grounded. The work to do was very complicated and its configuration was complicated.

On the other hand, in the structure of the connection portion of the main shielded wire 1, each shield 3 is provided on the end side of each shielded wire 1.
A plurality of tubular portions 56 that are externally fitted and fixed so as to be in electrical contact with each other, and the shielded wires 1 fixed by the tubular portions 56 are held in the notch insertion portions 43 in such a position that they can be inserted and arranged. So as to connect and support the respective tubular portions 56.
7 further includes a conductive bracket body 55 having a ring-shaped receiving portion of the shield cover receiving portion 40 so that the plate-shaped portion 57 of the conductive bracket body 55 electrically contacts at least the peripheral edge portion of the notch insertion portion 43. Surface 40f and shield cover 5
Since the shield 3 is sandwiched between the opening peripheral edge portions 51 of the shield wire 1, the shield 3 of each shield wire 1 is shielded from each tubular portion 56 of the conductive bracket body 55 via the plate portion 57. Since it is grounded to 40, the shields 3 of the plurality of shielded wires 1 can be easily grounded with a simple configuration.

Further, as in the present embodiment, the opening peripheral edge portion 51 of the shield cover 50 has the conductive bracket body 55.
Since the plate-shaped portion 57 contacts the plate-shaped portion 57 from the upper surface of the plate-shaped portion 57, the plate-shaped portion 57 can be pressed against the bottom surface of the positioning accommodating concave step portion 44, and the conductive bracket body 55 and the notch. Shield cover receiving portion 40 including the peripheral portion of the insertion portion 43
The contact resistance between them can be made as small as possible to enhance the noise shielding function of the shield 3 of the shielded wire 1.

{Second Embodiment} Next, the structure of the connecting portion of the shielded wire 1 according to the second embodiment of the present invention will be described. In the description of the second embodiment, the same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.

The structure of the connecting portion of the shielded wire 1 is shown in FIG.
As shown in FIG. 10, a supplementary bracket body 60 formed of a conductive material is hung over the side opening of the notch insertion portion 43 in a state of electrically contacting the shield cover receiving portion 40, and the supplementary The plate-shaped portion 57 of the conductive bracket body 55 is supported by the bracket body 60 from the side opposite to the opening peripheral edge portion 51 of the shield cover 50.

More specifically, the auxiliary bracket body 60 is
Conductive head cover H protruding laterally from the engine body E
Of the mounting plate-shaped portion 62 and a mounting plate-shaped portion 62 that can be mounted on the side edge portion of the shield cover receiving portion 40, which is the projecting end portion, so as to close the lateral opening of the notch insertion portion 43. The receiving portion 61 is provided so as to project toward the side surface.

The mounting plate portion 62 is formed in a long plate shape having a longitudinal dimension larger than the lateral opening width dimension of the notch insertion portion 43, and both end portions thereof are hung over the opening. Are formed at both end portions of the notch insertion portion 43 so that they can be attached and fixed.

In the present embodiment, the screw insertion holes 62a are formed at both ends of the mounting plate portion 62, and the outer side surface of the side surface of the shield cover receiving portion 40 is provided at both outer end portions of the notch insertion portion 43. Each of the screw holes 43a is formed, and a pair of screws S5 are passed through the screw insertion holes 62a and screwed into the screw holes 43a, so that the mounting plate portion 62 electrically contacts the shield cover receiving portion 40. In this state, the notch insertion portion 43 can be attached to the side opening.

The receiving portion 61 is formed in a horizontally long columnar shape having a length dimension substantially the same as the lateral opening width dimension of the notch insertion portion 43. Then, the mounting plate-shaped portion 62 can be arranged in the side opening of the notch insertion portion 43 in a state of being attached to the side opening of the notch insertion portion 43.

Further, the upper surface of the receiving portion 61 is at the same height as the bottom surface of the positioning accommodating recessed step portion 44, that is, the annular receiving surface 40f in a state of being disposed in the opening of the notch insertion portion 43. It is configured to be disposed at a position lower than the plate-shaped portion 57 by the thickness dimension of the plate-shaped portion 57. In the present embodiment, the mounting plate portion 62
Since the upper edge portion of the receiving portion 61 is arranged at the same height as the annular receiving surface 40f, the upper surface of the receiving portion 61 is located in a stepped manner from the upper edge portion of the mounting plate portion 62. Will be installed.

The auxiliary bracket body 60 is attached to the side edge portion of the shield cover receiving portion 40 so that the receiving portion 61 is arranged in the lateral opening of the notch insertion portion 43, and then the conductive bracket is formed. When the body 55 is attached to the side edge portion of the shield cover receiving portion 40, the upper surface of the receiving portion 61 is fixed to the shield cover 5
The lower surface of the plate-shaped portion 57 of the conductive bracket body 55 is supported from below on the side opposite to the opening peripheral edge portion 51 (see FIG. 8 and FIG. 9).

Shielded wire 1 according to the second embodiment
According to the structure of the connecting portion, the auxiliary bracket body 60 made of a conductive material is hung over the side opening of the notch insertion portion 43 in a state of being electrically contacted with the shield cover receiving portion 40, and the auxiliary By the bracket body 60, the plate-shaped portion 57 of the conductive bracket body 55 is supported in a state of being in electrical contact from the side opposite to the opening peripheral edge portion 51 of the shield cover 50. The shield cover receiver 40 is also electrically connected to the ground through the body 60 and grounded, so that the shield 3 of each shield wire 1 can be grounded more reliably.

{Third Embodiment} Next, the structure of the connecting portion of the shielded wire 1 according to the third embodiment of the present invention will be described. In the description of the third embodiment, the same components as those in the second embodiment will be designated by the same reference numerals and the description thereof will be omitted.

In the third embodiment, the opening peripheral edge portion 51 of the shield cover 50, the annular receiving surface 40f of the shield cover receiving portion 40, and the plate-like portion 57 of the conductive bracket body 55.
Alternatively, between the auxiliary bracket body 60, the connected connector 30
Also, the sealing material 65 is annularly interposed so as to surround the outer periphery of each tubular portion 56.

Specifically, as shown in FIGS. 11 and 12, the connected connector 3 is placed on the shield cover receiving portion 40.
0 and a sealing member 65 made of silicone or the like is provided in a substantially rectangular ring shape so as to surround the outer circumferences of the cylindrical portions 56. Here, the concave groove 200 is formed in a substantially rectangular annular shape on the annular receiving surface 40f, and the seal material 65 is formed by applying the seal constituent material in the concave groove 200 (see FIG. 12). The sealing material 65, which is disposed in the concave groove 200, is interposed between the opening peripheral edge portion 51 of the shield cover 50 and the annular receiving surface 40f of the shield cover receiving portion 40 in a compressed state.

In the portion where the notch insertion portion 43 of the shield cover receiving portion 40 is formed, the shield cover receiving portion 40 passes over the upper edge portion of the mounting plate portion 62 on the outer peripheral side of the positioning accommodation concave step portion 44. A sealing material 65 is provided, and the opening peripheral edge portion 51 of the shield cover 50 abuts on the upper edge portion of the mounting plate portion 62. In addition, after the conductive bracket body 55 is attached to the shield cover receiving portion 40, the seal material 65 may be disposed on the plate-shaped portion 57.

When the shield cover 50 is attached to the shield cover receiving portion 40, the opening peripheral edge portion 51 of the shield cover 50 and the annular receiving surface 40 of the shield cover receiving portion 40.
f, the sealing material 65 is interposed between the plate-shaped portion 57 of the conductive bracket body 55 or the auxiliary bracket body 60.

Shielded wire 1 according to the third embodiment
According to the structure of the connecting portion of the above, the opening peripheral edge portion 51 of the shield cover 50 and the annular receiving surface 40f of the shield cover receiving portion 40,
Between the plate-shaped portion 57 of the conductive bracket body 55 or the auxiliary bracket body 60, the connected connector 30 and each tubular portion 56.
Since the sealing material 65 is annularly interposed so as to surround the
The groove 200 is also provided on the upper surface of the auxiliary bracket 60).

In particular, since it is possible to prevent water from entering the tubular portions 56, deterioration of the shield 3 of the shielded wire 1 and the tubular portions 56 can be prevented, and electrical connection between the two can be more reliably maintained. It is possible to prevent the deterioration of the shield performance.

Further, the concave groove 2 formed in the annular receiving surface 40f
00 to apply the seal constituent material to the seal material 6
Since 5 is formed, the forming operation can be easily performed.

Moreover, in the state where the shield cover 50 is attached to the shield cover receiving portion 40, the opening peripheral edge portion 51 of the shield cover 50 and the shield cover receiving portion 40 in the state where the sealing material 65 is disposed in the concave groove 200. Annular receiving surface 40
Since it is interposed in a compressed state with f, the metal contact between the opening peripheral edge portion 51 and the annular receiving surface 40f is sure, and good conduction can be obtained between them.

In the first to third embodiments, the shield cover 5 is formed by covering the connector 10 from above.
No. 0 is attached to the shield cover receiving portion 40, and the joint portion between the shield cover 50 and the shield cover receiving portion 40 is horizontal and not upward, so that the engine is excellent in waterproof performance against water exposure.

Further, the shield cover receiving portion 40 is formed by forming the recessed portion in the corner of the head cover H, and the shield cover 50 is placed so that the upper surface of the shield cover 50 is flush with the upper surface of the head cover H. Since it is mounted so as to be housed in the shield cover receiving portion 40, the joint portion between the shield cover 50 and the shield cover receiving portion 40 is arranged at a position recessed downward from the upper surface of the head cover H. For this reason, it has excellent waterproof performance. In addition,
Since the upper surface of the shield cover 50 is disposed so as to be flush with the upper surface of the head cover H, the design is excellent.

[0083]

As described above, according to the structure of the shield wire connecting portion of the first aspect of the present invention, the annular receiving surface is formed on one side of the conductive head cover so as to surround the connected connector. And a shield cover formed on a container having an opening peripheral portion corresponding to the annular receiving surface by a conductive material, the shield cover receiving portion having a shield cover receiving portion extending from the connector and the connector connected to the connector to be connected. Of the shielded wire extending from the connector, the shielded part of the shielded wire is attached to the shield cover receiving part so that the opening peripheral edge portion of the shielded wire is brought into contact with the annular receiving surface. The peeled part of the shield is covered with the shield cover receiving part of the conductive head cover and the shield cover, so it is generated from the shielded wire. Excellent size of the shielding effect.

As described in claim 2, when the notch insertion portion into which the shield wire can be inserted and arranged from the side of the shield cover receiving portion is formed at the side edge portion of the shield cover receiving portion, the shield wire is concerned. Since the shield cover can be attached to the shield cover receiving portion by inserting the shield cover into the notch insertion portion and pulling it out from the inside of the shield cover, the assembling property of the connection portion of the shield wire is excellent.

At this time, when a plurality of the shielded wires extends from the connector, as described in claim 3, the shield wires are fitted to the end portions of the respective shielded wires so as to make electrical contact with the respective shields. The tubular portions are connected and supported so that the plurality of fixed tubular portions and the shield wires fixed by the tubular portions are held in a posture in which they can be inserted and arranged in the notch insertion portion. Further comprising a conductive bracket body having a plate-shaped portion, the plate-shaped portion of the bracket body, at least so as to electrically contact the peripheral portion of the notch insertion portion, the annular receiving surface of the shield cover receiving portion and the If it is sandwiched between the opening peripheral portions of the shield cover, the shield of each shield wire is grounded from each tubular portion of the conductive bracket body to the shield cover receiving portion via the plate portion. Becomes more than one The shield of the field lines can be easily ground.

According to a fourth aspect of the present invention, the opening peripheral edge portion of the shield cover is located from the surface opposite to the surface where the plate-shaped portion of the conductive bracket body contacts the peripheral edge portion of the notch insertion portion. When in contact with the plate-shaped portion, the contact resistance between the conductive bracket body and the shield cover receiving portion including the peripheral portion of the notch insertion portion can be made as small as possible, and the noise shielding of the shield of the shielded wire can be achieved. The function can be enhanced.

Further, as described in claim 5, a supplementary bracket body made of a conductive material is hung over the side opening of the notch insertion portion in a state of being in electrical contact with the shield cover receiving portion. If the plate-shaped portion of the conductive bracket body is supported by the supplementary bracket body in a state of being in electrical contact from the side opposite to the opening peripheral edge portion of the shield cover, the conductive bracket body is supplemented by the supplementary bracket body. Even if it passes through the body, it will be electrically connected to the shield cover receiving portion and grounded, so that the shield of each shield wire can be grounded more reliably.

Further, as described in claim 6, the opening peripheral edge portion of the shield cover and the annular receiving surface of the shield cover receiving portion,
Between the plate-shaped portion of the conductive bracket body or the auxiliary bracket body, a ring-shaped sealing material is provided so as to surround the outer periphery of the connected connector and each of the tubular portions, and between them, It is possible to prevent the intrusion of water that has passed through.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a shield wire connecting portion according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a structure of a shield wire connecting portion of the above.

FIG. 3 is an exploded perspective view showing a structure of a shield wire connecting portion of the above.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view showing a structure of a shield wire connecting portion according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view showing the structure of the above-mentioned shielded wire connecting portion.

FIG. 8 is an enlarged perspective view of a main part of a shield cover receiving portion.

9 is a sectional view taken along line IX-IX in FIG.

10 is a cross-sectional view taken along line XX of FIG.

FIG. 11 is a perspective view showing a structure of a shield wire connecting portion according to a third embodiment of the present invention.

FIG. 12 is an enlarged cross-sectional view of main parts taken along line XII-XII in FIG.

FIG. 13 is a schematic view showing a conventional example.

[Explanation of symbols]

1 shielded wire 3 shield 4 Cover 10 connectors 30 Connected connector 40 Shield cover receiving part 40f annular receiving surface 43 Notch insertion part 44 Positioning accommodation concave step 50 shield cover 51 Opening peripheral part 55 Conductive bracket body 56 Cylindrical part 57 Plate 60 Complementary bracket body 65 sealing material E engine body H conductive head cover P drive system electrical components

Continued front page    (71) Applicant 000003207             Toyota Motor Corporation             1 Toyota Town, Toyota City, Aichi Prefecture (72) Inventor Yoshihiro Kumazawa             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. (72) Inventor Kenji Inoue             Sumitomo Den 1-14 Nishi-Suehiro-cho, Yokkaichi-shi, Mie Prefecture             Sozo Co., Ltd. (72) Inventor Junyuki Miyazaki             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. (72) Inventor Masaji Katsumada             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Tatsuo Iida             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. (72) Inventor Kenji Tsubone             1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto             Car Co., Ltd. F-term (reference) 5E021 FA03 FA05 FB11 FB20 FC21                       FC40 GB02 LA01 LA09 LA15                 5E077 BB09 DD14 GG10 JJ20 JJ21                 5E321 AA01 CC22 GG09

Claims (6)

[Claims] 1. A structure of a connection portion of a shield wire, which is connected to a drive system electric component provided in an engine by a connector, wherein a shield is provided on an outer periphery of the electric wire and a coating portion is further provided on the outer periphery thereof. A shield wire from which the shield and the covering portion are peeled off over a predetermined length from the end portion thereof, a connector attached to the end portion of the shield wire, and a conductive property which is arranged on the upper side of the engine body in a grounded state. A connector provided on one side of the head cover for connecting the electric wire to the drive system electrical component by connector connection with the connector; and the connected connector on one side of the conductive head cover. A shield cover receiving portion having an annular receiving surface formed so as to surround the connector is provided, and has an opening peripheral portion corresponding to the annular receiving surface made of a conductive material. A shield cover formed on the container covers the connector connected to the connector to be connected and the peeled portion of the shield of the shield wire extending from the connector, and the opening peripheral portion thereof is A structure of a connecting portion of a shield wire attached to the shield cover receiving portion so as to come into contact with the annular receiving surface. 2. The structure of the shield wire connecting portion according to claim 1, wherein the shield wire is inserted and arranged at a side edge portion of the shield cover receiving portion from a side of the shield cover receiving portion. Structure of the connection part of the shielded wire where the insertion part is formed. 3. The structure of a shield wire connecting portion according to claim 2, wherein a plurality of the shield wires extend from the connector, wherein the shield wires are electrically contacted with the respective end portions of the shield wires. A plurality of tubular portions that are externally fitted and fixed as described above, and each of the shield wires that are externally fitted and fixed to each of these tubular portions are held in a posture in which they can be inserted and arranged in the notch insertion portion,
Further comprising a conductive bracket body having a plate-shaped portion connecting and supporting the respective tubular portions, wherein the plate-shaped portion of the bracket body electrically contacts at least a peripheral portion of the notch insertion portion, A structure of a connecting portion of a shield wire sandwiched between an annular receiving surface of a shield cover receiving portion and an opening peripheral edge portion of the shield cover. 4. The structure of the shield wire connecting portion according to claim 3, wherein the opening peripheral edge portion of the shield cover is in contact with the peripheral edge portion of the notch insertion portion by the plate-shaped portion of the conductive bracket body. The structure of the connection part of the shield wire that abuts the plate-shaped part from the surface opposite to the surface. 5. The structure of the shield wire connecting portion according to claim 4, wherein a supplementary bracket body made of a conductive material is electrically connected to the shield cover receiving portion at a side opening of the notch insertion portion. Wire which is hung in a state in which it is in contact with each other and is supported by the auxiliary bracket body in a state where the plate-like portion of the conductive bracket body is in electrical contact from the side opposite to the opening peripheral edge portion of the shield cover. Connection structure. 6. The structure of the shield wire connecting portion according to claim 5, wherein the peripheral edge portion of the opening of the shield cover, the annular receiving surface of the shield cover receiving portion, the plate-like portion or the auxiliary portion of the conductive bracket body. A structure of a connecting portion of a shield wire in which a sealing material is annularly interposed so as to surround an outer periphery of the connected connector and each of the tubular portions with a bracket body.