JP2017079504A - Wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring harness which can reliably secure a band, for holding a wire group, to a protector even if external force in the axial direction is applied to the wire group.SOLUTION: A band head 5 of a binding band 2 is formed as a male tapered face 5a so that at least one outer surface part, of outer surface parts where an opening of a through-hole 4 is not present, is downsized in a band insertion direction. A bottom of a protector body portion 8 comprises: a band head housing part 11 housing the band head 5 and having a female tapered face 11a which becomes an engagement state with the male tapered face 5a; and an escape prevention claw 14 which locks a locking part 7 formed on the band 6. The wiring harness is configured such that a lid part 9 comes into close contact with the band 6 or that a size of a gap between the lid part 9 and the band 6 prevents the band head 5 from escaping from the band head housing part 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wire harness including a protector that protects an electric wire group.

  Electrical components mounted on vehicles typified by automobiles obtain much information such as electric power and switch sensors via electric wires. For this reason, the electric wire group which bundles a huge quantity of electric wires is wired by the vehicle. Moreover, in order to protect an electric wire group, the protector of the structure corresponding to the path | route which routes an electric wire group is armored by the electric wire group.

  For example, as shown in FIGS. 6 and 7, a front end portion 41 a of a band 41 in which an electric wire group including one or a plurality of electric wires 40 is bundled is engaged with an engaging portion 43 formed on the bottom surface of the protector 42. A wire harness having a structure is already known (for example, see Patent Document 1).

JP 2014-90552 A

  However, in such a conventional wire harness, since only the tip of the band is assembled to the protector, for example, when an external force is applied in the axial direction of the electric wire, the position of the band with respect to the protector is not fixed. There was a problem that it was not possible to engage.

  The present invention has been made to solve the above-described problems, and provides a wire harness that can securely hold a band for holding a wire group to a protector even when an external force in the axial direction acts on the wire group. For the purpose.

  In order to achieve the above object, a wire harness according to the present invention includes an electric wire group, a band head having a through hole, a band having one end extending from one side of the band head, and a side surface on the other end side of the band. A binding band that is made of a flexible resin having a saw blade-like locking portion in a region, winds up the wire group, the other end of the band is inserted into the through hole, and tightens the wire group; A protector main body and a lid, wherein the protector main body accommodates a portion of the wire group bound to the binding band, and the lid closes and protects the opening of the protector main body. The band head includes a male head such that at least one outer surface portion of the outer surface portion where the opening of the through hole does not exist decreases in shape toward the band insertion direction. A band head receiving portion having a female tapered surface that receives the band head and engages with the male tapered surface that is the one outer surface portion; An escape prevention claw that locks the stopper, and the lid is in close contact with the band, or the gap between the lid and the band is such that the band head does not escape from the band head housing. It is comprised so that.

  With this configuration, since the band head is housed in the band head housing portion in a fitted state in the wire harness according to the present invention, even if an axial external force acts on the wire group, the external force is applied to the band head housing portion. Since the inner side surface of the cable is received, the saw blade-like locking portion of the binding band locked by the escape prevention claw does not act by twisting and pulling force, so the band for holding the wire group can be securely held by the protector. .

  Further, the wire harness having the above-described configuration includes a pair of ribs for restraining the movement of the band at both sides of the bottom surface portion of the band head that is removed from the band head housing portion and where the band abuts. It may be a configuration.

  With this configuration, in the wire harness according to the present invention, since the pair of ribs restrains the movement of the band, even if an external force in the axial direction acts on the electric wire group further, the external force is applied to the inside of the band head housing portion. Since the side surface receives and the pair of ribs receive, the band for holding the wire group can be securely held by the protector.

  In the wire harness having the above-described configuration, the protector including the protector main body and the lid is provided in a T shape so as to accommodate a branch portion between a trunk line and a branch line of the wire group, and the binding band And the structure provided with the said band head accommodating part in the position corresponding to a branch line may be sufficient.

  With this configuration, in the wire harness according to the present invention, since the band head is accommodated in the band head accommodating portion, an axial external force acts on the trunk line of the electric wire group, so that the branch line is axially Even if the external force acts, the inner surface of the band head housing portion receives the external force, or the inner surface of the band head housing portion receives the external force and the pair of ribs receive the band. Can be securely held by the protector.

  ADVANTAGE OF THE INVENTION According to this invention, even if the axial direction external force acts on an electric wire group, the wire harness which can hold | maintain the band holding an electric wire group to a protector reliably can be provided.

It is a perspective view which shows the wire harness which concerns on one embodiment of this invention. It is a disassembled perspective view which shows the binding band and protector main-body part in the wire harness which concerns on one embodiment of this invention. It is the sectional view on the AA line in FIG. It is sectional drawing which shows the band head accommodating part in the wire harness which concerns on one embodiment of this invention. It is a perspective view which shows the protector main-body part in the wire harness which concerns on one embodiment of this invention. It is a disassembled sectional view which shows the band and protector in the conventional wire harness. It is sectional drawing which shows the band and protector in the conventional wire harness.

  Next, an embodiment according to the present invention will be described with reference to the drawings.

  The wire harness shown as this Embodiment is related with the wire harness for vehicles routed by the vehicle of a motor vehicle.

  As shown in FIG. 1, the wire harness 1 includes an electric wire group 30 as a trunk line, an electric wire group 31 as a branch line branched from the electric wire group 30, a binding band 2 that binds the electric wire group 31, and an electric wire group 31. And a protector 3 that accommodates the portion bound to the binding band 2.

  The electric wire group 30 as a trunk line includes a plurality of electric wires 32, and the electric wire group 31 as a branch line includes a plurality of electric wires 32. The electric wire 32 is an insulated electric wire having, for example, a conductor mainly composed of copper or aluminum and an insulating coating such as PVC covering the periphery of the conductor.

  As shown in FIGS. 2 and 3, the binding band 2 includes a band head 5 having a through hole 4, a band 6 having a required length in which one end 6 a extends from one side surface of the band head 5, and the other end of the band 6. It is made of a flexible resin having a saw blade-like locking portion 7 formed in a region of a required length on the side surface on the 6b side.

  The binding band 2 winds the electric wire group 31, the other end 6 b of the band 6 is inserted into the through hole 4, and the electric wire group 31 is tightened. Note that a known lock mechanism for locking the locking portion 7 and preventing the wire group 31 from being loosened may be provided inside the band head 5.

  The band head 5 has a male tapered surface 5a such that at least one of the outer surface portions where no through hole 4 is present has a shape that decreases in the band insertion direction (z-axis negative direction in FIG. 2). It is said that.

  As shown in FIG. 1, the protector 3 includes a protector body 8 and a lid 9, and is provided in a T shape so as to accommodate a branch portion of a wire group 30 as a trunk line and a wire group 31 as a branch line. It has been.

  The protector body 8 and the lid 9 are made of, for example, non-conductive synthetic resin such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA). This is a molded member.

  As shown in FIGS. 1 and 2, the protector 3 having the protector main body 8 and the lid 9 accommodates the portion of the protector main body 8 bound to the binding band 2 of the wire group 31, and the lid 9 protects the protector 3. The opening 10 of the main body 8 is closed and protected.

  For example, the lid 9 and the protector main body 8 are detachably provided by an arbitrary lock mechanism. Or the cover part 9 and the protector main-body part 8 may be connected via the hinge part so that the opening part 10 of the protector main-body part 8 can be opened and closed.

  As shown in FIGS. 2 and 3, the bottom of the protector body 8 has a band head housing portion that has a female taper surface 11 a that houses the band head 5 and is engaged with a male taper surface 5 a that is one outer surface portion. 11. The binding band 2 and the band head accommodating portion 11 are provided at positions corresponding to the wire group 31 as a branch line.

  The band head accommodating portion 11 has a pair of guiding ribs 12 for restricting movement of the band head 5 in the x-axis direction when the binding band 2 in which the electric wire group 31 is bound is accommodated in the protector 3.

  The lid 9 is disposed such that the lower surface thereof is in close contact with the band 6 or has a predetermined gap δ from the band 6. A gap δ between the lower surface of the lid portion 9 and the band 6 is set such that the band head 5 does not escape from the band head accommodating portion 11. Specifically, the gap δ only needs to be smaller than the depth D of the band head accommodating portion 11.

  As shown in FIG. 2, the protector main body 8 is a band housed in the protector main body 8 at positions on both sides of a place where the band 6 abuts on the bottom surface of the band head 5 from which the band head housing 11 is removed. 6 is provided with a pair of detent ribs 13 for restraining the movement of 6 in the x-axis direction. Similar ribs may be formed at corresponding locations on the lower surface of the lid portion 9.

  Further, as shown in FIGS. 3 and 4, the bottom of the protector main body 8 has an escape prevention claw 14 that locks the locking portion 7 of the band 6. Thereby, when the binding band 2 that binds the electric wire group 31 is accommodated in the protector 3, the other end 6 b of the band 6 can be temporarily held in the protector main body 8.

  Next, a procedure for assembling the wire harness 1 according to the present embodiment will be briefly described.

  First, the binding band 2 is wound around a predetermined position of the electric wire group 31 as a branch line, and the other end 6b of the band 6 is inserted into the through hole 4 (binding process). Next, as shown in FIG. 5, the lid 9 is removed from the protector main body 8.

  Next, the band head 5 of the binding band 2 in which the wire group 31 is bound is accommodated in the band head accommodating portion 11 of the protector main body 8 (accommodating step). At this time, since the movement of the band head 5 in the x-axis direction is restricted by the guiding rib 12, the band head 5 can be easily accommodated in the band head accommodating portion 11. Further, the other end 6 b of the band 6 is temporarily held in the protector main body 8.

  In addition, the electric wire group 31 is loosely bound by the binding band 2 in the above-described binding step, and the other end 6b of the band 6 is pulled downward after the storing step, so that the engaging portion 7 and the escape prevention claw 14 are engaged with each other. It is also possible to bind the electric wire group 31 tightly with the binding band 2 by changing.

  Next, as shown in FIG. 1, the lid 9 is attached to the protector body 8, and the assembly of the wire harness 1 is completed.

  As described above, in the wire harness 1 according to the present embodiment, the band head 5 is housed in the band head housing portion 11 in a fitted state, so that even if an axial external force acts on the wire group 31, Since the external force is received by the inner surface of the band head accommodating portion 11, the external force does not act on the lock of the escape preventing claw 14 and the saw blade-like locking portion 7 of the band 6, and the lock can be safely held. Thereby, the band 6 holding the electric wire group 31 can be reliably held by the protector 3.

  In the wire harness 1 according to the present embodiment, since the pair of retaining ribs 13 restrains the movement of the band 6, even if an axial external force acts on the electric wire group 31 further, the external force is applied. While the inner side surface of the band head accommodating portion 11 receives and the pair of detent ribs 13 receive, the lock can be safely held. Thereby, the band 6 holding the electric wire group 31 can be reliably held by the protector 3.

  Further, in the wire harness 1 according to the present embodiment, since the band head 5 is housed in the band head housing portion 11 in a fitted state, an external force in the axial direction acts on the wire group 30 as a trunk line, Even if an external force in the axial direction is applied to the electric wire group 31 as a branch line, the external force is received by the inner side surface of the band head accommodating portion 11, or the outer force is received by the inner side surface of the band head accommodating portion 11. Since the slip prevention rib 13 receives the lock, the lock can be safely held. Thereby, the band 6 holding the electric wire group 31 can be reliably held by the protector 3.

  Moreover, since the wire harness 1 which concerns on this Embodiment can suppress that the binding band 2 jumps out the protector 3 by accommodating the band head 5 in the band head accommodating part 11, and fixing it, the surrounding electric wire group 30 , 31 can be prevented from being damaged. Moreover, since the position of the band 6 with respect to the protector 3 can be fixed, the dimension adjustment of the wire harness 1 can be performed easily.

  As described above, the wire harness according to the present invention has an effect that the band for holding the wire group can be securely held by the protector even if an axial external force acts on the wire group, and protects the wire group. It is useful for all wire harnesses equipped with a protector.

DESCRIPTION OF SYMBOLS 1 Wire harness 2 Binding band 3 Protector 4 Through-hole 5 Band head 5a Male taper surface 6 Band 6a One end 6b Other end 7 Locking part 8 Protector main body part 9 Lid part 10 Opening part 11 Band head accommodating part 11a Female taper surface 12 Guide Rib 13 Anti-slip rib 14 Escape prevention claw 30, 31 Wire group

Claims (3)

A group of wires;
It is made of a flexible resin having a band head having a through hole, a band having one end extending from one side surface of the band head, and a saw blade-like locking portion in a side region on the other end side of the band. Yes, the wire group is wound once, the other end of the band is inserted through the through-hole, and a binding band that tightens the wire group;
A protector having a protector main body and a lid, wherein the protector main body accommodates a portion of the wire group bound to the binding band, and the lid closes and protects the opening of the protector main body. In a wire harness having
The band head is a male taper surface such that at least one outer surface portion of the outer surface portion where the opening of the through hole does not exist becomes smaller in the band insertion direction,
The bottom of the protector main body has a female head tapered surface that receives the band head and engages with the male tapered surface that is the one outer surface, and an escape that locks the locking portion. And a prevention nail,
The wire harness according to claim 1, wherein the lid portion is in close contact with the band, or a gap between the lid portion and the band is set to a dimension that the band head does not escape from the band head housing portion.   2. A pair of ribs for restraining the movement of the band are provided at positions on both sides of a portion of the bottom surface portion of the band head, which is separated from the band head housing portion, where the band abuts. The wire harness described in 1.   The protector comprising the protector body and the lid is provided in a T shape so as to accommodate a branch portion between a trunk line and a branch line of the electric wire group, and the binding band and the band head accommodating portion are branched lines. The wire harness according to claim 1, wherein the wire harness is provided at a position corresponding to.

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