JP7327624B2 - wire harness - Google Patents

Description

The present invention relates to wire harnesses.

Conventionally, for example, a pair of sensor wires for transmitting a detection signal of an ABS (anti-lock brake system) sensor of an automobile and a pair of parking brake wires for operating an electric parking brake are covered with a common sheath and integrated. There is a wiring harness that has a sensor electric wire and a parking brake electric wire branched from the end of a sheath, and a rubber plug is externally fitted to the end of the sheath (see, for example, Patent Document 1).

The rubber plug of the wire harness described in Patent Document 1 is provided with a sheath outer fitting portion that is externally fitted to the end of the sheath, and a wire through portion that has a plurality of through holes through which wires are passed. . The rubber plug has a pair of sensor electric wires and a parking brake electric wire respectively inserted through the through holes of the electric wire penetration portion, and the sheath outer fitting portion is fitted onto the end portion of the sheath, thereby forming the sheath outer fitting portion and the electric wire penetration portion. are tightened by a tightening ring formed on the tip side of the bracket. The bracket has a mounting substrate with a through hole formed therein, and the rubber plug is mounted on the vehicle side with a bolt inserted through the through hole.

Japanese Patent No. 6249239

The present invention provides a wire harness that is equipped with a plurality of insulated wires and a sheath that covers a part of the plurality of insulated wires in the longitudinal direction, and that is capable of improving waterproofness to prevent moisture from entering the interior of the sheath. With the goal.

An object of the present invention is to solve the above problems by providing a plurality of insulated wires in which conductor wires are coated with an insulator, a sheath covering a part of the plurality of insulated wires in a longitudinal direction, and the plurality of insulated wires. a molded member made of a rubber-like elastic body that covers the end of the sheath from which the wire leads out and a part of the plurality of insulated wires led out from the end; and a winding member comprising: a sheath holding portion that covers the outer periphery of the end portion of the sheath to hold the sheath; A wire holding portion formed continuously with a sheath holding portion, wherein the winding portion includes a first portion wound around the outer peripheral surface of the sheath holding portion and the outer peripheral surface of the wire holding portion. and a second portion that is crimped, wherein the crimp portion is formed continuously with the first portion and the second portion.

Advantageous Effects of Invention According to the wire harness of the present invention, it is possible to improve the water cut-off property that prevents moisture from entering the interior of the sheath.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the wire harness which concerns on embodiment of this invention. FIG. 2 is a front view of the wire harness shown in FIG. 1; (a) is a longitudinal cross-sectional view passing through the insulated wire in FIG. 1, (b) is a cross-sectional view along the AA line in (a), (c) is a cross-sectional view along the BB line in (a), (d ) is a cross-sectional view taken along the line CC of (a). The modification of the 1st and 2nd clamping member is shown, (a) is a front view, (b) is a left side view.

[Embodiment]
FIG. 1 is a perspective view showing a wire harness according to an embodiment of the invention. 2 is a front view of the wire harness shown in FIG. 1. FIG. 3(a) is a longitudinal cross-sectional view passing through the insulated wire of FIG. 1, (b) is a cross-sectional view along the AA line of (a), (c) is a cross-sectional view along the BB line of (a), (d) is a sectional view taken along line CC of (a).

The wire harness 1 includes a pair of first insulated wires 2 and a pair of second insulated wires 3, a sheath 4 that covers a part of the first and second insulated wires 2 and 3 in the longitudinal direction, and the sheath 4. It has a molded member 5 that covers the end portion 4a and part of the first and second insulated wires 2 and 3 led out from the end portion 4a, and a bracket 7 as a fixture.

The wire harness 1 is mounted on a vehicle, and the bracket 7 is fixed to the vehicle body by fastening members such as bolts and rivets (not shown) inserted through the through holes 720 of the bracket 7 . The first insulated wire 2 is, for example, a parking brake wire for supplying operating power to an electric parking brake. The second insulated wire 3 is, for example, a sensor wire that transmits a detection signal from an ABS sensor. Also, the first insulated wire 2 or the second insulated wire 3 may be used as a damper wire for controlling an electronically controlled damper. Alternatively, a damper wire may be added as a third insulated wire and housed in the sheath 4 .

The first insulated wire 2 is composed of a conductor wire 21 obtained by twisting a plurality of wires made of copper, for example, and an insulator 22 covering the conductor wire 21 . Similarly, the second insulated wire 3 is composed of a conductor wire 31 obtained by twisting a plurality of strands made of copper, for example, and an insulator 32 covering the conductor wire 31 . In addition, the first insulated wire 2 is formed thicker than the first insulated wire 3 .

The sheath 4 is tubular and covers the pair of first insulated wires 2 and the pair of second insulated wires 3 collectively. A fibrous interposition 41 is arranged inside the sheath 4 between the inner surface of the sheath 4 and the first and second insulated wires 2 and 3 . One end of the sheath 4 is held by the forming member 5, and the other end is held by a case of a control device (not shown).

The molded member 5 includes a sheath holding portion 51 that covers the outer periphery of the end portion 4a of the sheath 4 from which the first and second insulated wires 2 and 3 are led out and holds the sheath 4, and a first wire lead out from the sheath 4. and a wire holding portion 52 for holding the second insulated wires 2 and 3; A first lead-out portion 53 leading out in the direction of (for example, the axial direction), and two second insulated wires 3 (which are part of a plurality of (four) insulated wires) from the wire holding portion 52 It integrally has a second lead-out portion 54 leading out in a direction different from the first direction (for example, oblique direction).

The sheath 4 is linearly held inside the molding member 5 by a sheath holding portion 51 . The first insulated wire 2 is held by the wire holding portion 52 in parallel with the sheath 4 held by the sheath holding portion 51 in a straight line. The second insulated wire 3 is bent inside the wire holding portion 52 and led out from the molded member 5 in a direction different from that of the first insulated wire 2 . Hereinafter, the direction of the central axis of the sheath 4 held by the sheath holding portion 51 will be referred to as the axial direction.

When viewed from the radial direction, the molding member 5 has a sheath holding portion 51 at a portion corresponding to the outer peripheral side of the sheath 4, a wire holding portion 52 at a portion beyond the opening end face 4b of the sheath 4, and a wire holding portion. Portions beyond 52 are formed as first and second lead-out portions 53 and 54, respectively. The sheath holding portion 51 has a cylindrical main body portion 510 and an annular flange portion 511 protruding radially from the main body portion 510 . The flange portion 511 is provided so as to protrude radially outward from the outer peripheral surface 5a of the molded member 5 to which the tightening portion 71 of the bracket 7 is tightened.

The molded member 5 is made of a rubber-like elastic material such as EPDM (ethylene propylene diene rubber). Since EPDM is a relatively soft material and can be bent following the bending of the insulated wires 2 and 3, damage to the insulated wires 2 and 3 can be suppressed. The material of the molding member 5 is not limited to EPDM, but urethane rubber, silicon rubber, butyl rubber, fluororubber,
Acrylic rubber and butadiene rubber may also be used.

The first lead-out portion 53 has a cylindrical shape with a diameter smaller than that of the wire holding portion 52 , and the second lead-out portion 54 has a cylindrical shape with a diameter smaller than that of the first lead-out portion 53 . A plurality of (two in the present embodiment) first insertion holes through which the first insulated wires 2 are inserted are formed separately from each other in the first lead-out portion 53 . A plurality of (two in the present embodiment) second insertion holes through which the second insulated wires 3 are inserted are formed separately from each other in the second lead-out portion 54 . A boundary 5 b is formed between the outer peripheral surface 5 a of the wire holding portion 52 and the outer peripheral surface 54 a of the second lead-out portion 54 by projecting the second lead-out portion 54 obliquely from the wire holding portion 52 . When the seamed portion 71 of the bracket 7 is seamed around the outer peripheral surface 5a of the molded member 5, the bracket 7 is axially axially attached to the molded member 5 by sandwiching the seamed portion 71 between the flange portion 511 and the boundary 5b. Relative movement is restricted.

The outer peripheral surface 53a of the first lead-out portion 53 is tightened and pressed by the first tightening member 8A. Thereby, the first insulated wire 2 and the inner peripheral surface of the first lead-out portion 53 in the first insertion hole are brought into close contact with each other. The outer peripheral surface 54a of the second lead-out portion 54 is tightened and pressed by the second tightening member 8B. Thereby, the second insulated wire 3 and the inner peripheral surface of the second lead-out portion 54 in the second insertion hole are brought into close contact with each other. The first and second tightening members 8A, 8B are made of, for example, synthetic resin or metal such as SUS.

FIG. 4 shows a configuration example of the first tightening member 8A, where (a) is a front view and (b) is a side view. Although not shown, the second tightening member 8B can also be constructed in the same manner as the first tightening member 8A.

The first tightening member 8A has a locking head 82 having a notch 821 at one end of a strip-shaped main body 81, and the other end of the main body 81 is inserted through this locking head 82. be. The notch 821 engages the body portion 81 to maintain the state in which the body portion 81 clamps the first lead-out portion 53 .

The bracket 7 is made of a plate-shaped metal such as aluminum. The bracket 7 integrally has a tightening portion 71 that is tightened around the outer peripheral surface 5a of the molded member 5, and a fixing portion 72 that is fixed to a fixing target on the vehicle body side. The winding portion 71 functions as a pressing portion that presses the molded member 5 . A through hole 720 is formed through the fixed portion 72 in the plate thickness direction. The seam portion 71 surrounds the outer peripheral surface 5a of the molded member 5 over more than half the circumference when viewed in the axial direction. The winding portion 71 holds the wire holding portion 52 together with the sheath holding portion 51 . The outer peripheral surface 5 a of the molded member 5 that is wound by the tightening portion 71 in contact extends from the outer peripheral surface of the sheath holding portion 51 to the outer peripheral surface of the wire holding portion 52 . The winding portion 71 may be wound around the entire outer peripheral surface 5 a of the body portion 510 of the sheath holding portion 51 .

(Manufacturing process of wire harness)
Next, an example of the manufacturing process of the wire harness 1 will be described. In this example, the molded member 5 is pre-injection molded into a shape having a space for accommodating the sheath 4 and the first and second insulated wires 2, 3, and the first and second insulated wires 2, 3 are placed in the space. It is inserted and accommodates the end portion 4a of the sheath 4. As shown in FIG. In addition, with the first insulated wire 2 drawn out from the sheath 4 in the axial direction and the second insulated wire 3 drawn out in the oblique direction, the end 4a of the sheath 4 and the end 4a A molding member 5 may be molded so as to partially cover the first and second insulated wires 2,3.

Next, the outer peripheral surface 53a of the first lead-out portion 53 of the molding member 5 is tightened by the first tightening member 8A, and the outer peripheral surface 54a of the second lead-out portion 54 is tightened by the second tightening member 8B.

Next, the bracket 7 is wound around the outer peripheral surface 5a between the flange portion 511 of the molded member 5 and the boundary 5b between the outer peripheral surface 5a of the electric wire holding portion 52 and the outer peripheral surface 54a of the second lead-out portion 54. The wire harness 1 is manufactured by winding the tightening portion 71 . After that, fastening members such as bolts and rivets are inserted into the through holes 720 formed in the fixing portion 72 of the bracket 7 to fix it to the vehicle body.

(Actions and effects of the embodiment)
According to the embodiment described above, the following actions and effects are obtained.

Since the first lead-out portion 53 and the second lead-out portion 54 are provided in the molded member 5 according to the lead-out directions of the first insulated wire 2 and the second insulated wire 3, the first and second insulated wires 2 and 3 can branch off at the end of the sheath 4 and lead out in different directions.

Since the outer peripheral surfaces 53a, 54a of the first and second lead-out portions 53, 54 of the molding member 5 are individually tightened by the first and second tightening members 8A, 8B, they are collectively tightened by one tightening member. The water cutoff between the molded member 5 and the first and second insulated wires 2, 3 is higher than in the case of tightening them together.

Since the winding portion 71 of the bracket 7 is wound around the outer peripheral surface 5a between the flange portion 511 of the molding member 5 and the boundary 5b, the waterproofness between the sheath 4 and the molding member 5 is enhanced.

Since the molded member 5 is made of a rubber elastic material, it is possible to fix the lead-out directions of the first and second insulated wires 2, 3, while the first and second insulated wires 2, 3 are Even if the molded member 5 bends due to vehicle vibration or the like, the molded member 5 bends following the bending of the first and second insulated wires 2, 3, so damage to the first and second insulated wires 2, 3 is suppressed. can do.

A pair of first insulated wires 2 of the same system having the same connection destination are collectively inserted into the first lead-out portion 53, and a pair of second insulated wires 3 of the same system connected to another connection destination are collectively inserted. is inserted into the second lead-out portion 54 . Therefore, even if a force is applied to bend the first insulated wire 2 and the pair of second insulated wires 3 in different directions, the first lead-out portion 53 and the second lead-out portion 54 can be independently and individually Since it can be curved, it is possible to further improve the water stoppage.

Since the winding portion 71 presses the outer peripheral surface 5a of the molded member 5 from the outer peripheral surface of the sheath holding portion 51 to the outer peripheral surface of the wire holding portion 52, the water stoppage is further enhanced.

(Summary of embodiment)
Next, technical ideas understood from the embodiments described above will be described with reference to the reference numerals and the like in the embodiments. However, each reference numeral in the following description does not limit the constituent elements in the claims to the members and the like specifically shown in the embodiment.

[1] Conductor wires (21, 31) cover a plurality of insulated wires (2, 3) coated with insulators (22, 32) and a part of the plurality of insulated wires (2, 3) in the longitudinal direction A sheath (4), an end (4a) of the sheath (4) from which the plurality of insulated wires (2, 3) are led out, and the plurality of insulated wires (2, 3) led out from the end (4a) ), the molding member (5) having a tubular shape from which a part of each of the plurality of insulated wires (2, 3) is led out. and the outer peripheral surfaces (53a, 54a) of the plurality of lead-out portions (53, 54) are respectively tightened by tightening members (8A, 8B), wire harness (1).

[2] The molded member (5) includes a first lead-out portion (53) for leading out a part of the insulated wires (2, 3) from among the plurality of insulated wires (2, 3), and the plurality of insulated wires ( 2, 3) and a second lead-out portion (54) for leading out the other part of the insulated wire (3), and the outer peripheral surface (53a) of the first lead-out portion (53) is the second The above [1], wherein the second lead-out portion (54) is tightened by one tightening member (8A), and the outer peripheral surface (54a) of the second lead-out portion (54) is tightened by the second tightening member (8B). wire harness (1).

[3] Leading-out direction of the part of the insulated wire (2) from the first lead-out part (53) and the other part of the insulated wire (3) from the second lead-out part (54) The wire harness (1) according to the above [2], wherein the lead-out direction of the wire harness is different from that of the wire harness (1).

[4] A fixture (7) for attaching the molded member (5) to an object to be attached is further provided, and at least a portion of the outer peripheral surface of the molded member (5) corresponding to the outer peripheral side of the sheath (4) is the fixed member. The wire harness (1) according to any one of the above [1] to [3], which is tightened by metal fittings (7).

[5] The fixing fitting (7) is the outer peripheral surface of the molded member (5) corresponding to the outer peripheral side of the plurality of insulated wires (2, 3) led out from the end (4a) of the sheath (4). The wire harness (1) according to the above [4], wherein at least a part of the wire harness (1) is tightened.

[6] A fixture (7) for attaching the molded member (5) to an object to be attached is further provided, and the fixture (7) is attached to the molded member (5) by the second lead-out portion (54). The wire harness (1) according to [2] above, which is attached to one side.

(Appendix)
Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the scope of claims. Also, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

Moreover, the present invention can be modified appropriately without departing from the gist thereof. For example, in the above embodiment, the first and second insulated wires 2 and 3 are led out in different directions, but the first and second insulated wires 2 and 3 are led out in the same direction. may Alternatively, the pair of first insulated wires 2 may be led out from separate lead-out portions, and the respective lead-out portions may be tightened by tightening members, and the pair of second insulated wires 3 may be led out from separate lead-out portions. Then, each lead-out portion may be tightened by a tightening member. Furthermore, for example, when a damper wire is added as a third insulated wire, the molded member 5 is further provided with a third lead-out portion for leading out the third insulated wire. may be tightened by a tightening member. The use of the wire harness 1 is also not particularly limited.

REFERENCE SIGNS LIST 1 wire harness 2 first insulated wire 3 second insulated wire 4 sheath 5 molding member 7 fixing bracket 8A first tightening member 8B second tightening member 21, 31 conductor Wires 22, 32... Insulator 53... First lead-out part 54... Second lead-out part 53a, 54a... Outer peripheral surface

Claims (3)

a plurality of insulated wires in which conductor wires are coated with an insulator;
a sheath covering a part of the plurality of insulated wires in a longitudinal direction;
a molded member made of a rubber-like elastic body covering an end of the sheath from which the plurality of insulated wires are led out and a part of the plurality of insulated wires led out from the end;
a tightening member including a tightening portion that is tightened around the outer peripheral surface of the molded member;
with
The molding member includes a sheath holding portion that covers the outer periphery of the end portion of the sheath and holds the sheath, and a sheath holding portion that holds the plurality of insulated wires led out from the sheath and is formed continuously with the sheath holding portion. and a wire holding portion,
The winding portion has a first portion wound around the outer peripheral surface of the sheath holding portion and a second portion wound around the outer peripheral surface of the wire holding portion,
In the winding part, the first part and the second part are continuously formed,
wire harness. The molding member includes a cylindrical first lead-out portion for leading out some of the plurality of insulated wires, and a cylindrical lead-out portion for leading out some of the plurality of insulated wires. a second lead-out portion;
The outer peripheral surface of the first lead-out portion is tightened by a first tightening member, the outer peripheral surface of the second lead-out portion is tightened by a second tightening member,
The first lead-out portion is formed with a plurality of first insertion holes spaced apart from each other, through which some of the plurality of insulated wires are inserted.
The wire harness according to claim 1. The molded member is made of any one of ethylene propylene diene rubber, urethane rubber, silicon rubber, butyl rubber, fluororubber, acrylic rubber, and butadiene rubber,
The wire harness according to claim 1.

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