JP2962094B2 - Flat wire harness length adjustment member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a length adjusting member for a flat wire harness, and more particularly, to a copper foil or a small diameter member such as an FPC (flexible printed circuit) and an FWC (flexible wire circuit). The length of a flexible flat wire harness having a configuration in which a conductor such as an electric wire is covered with an insulating film can be adjusted.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 10 and 11 (A) and 11 (B), a flat wire harness of this type is composed of insulating films 2 and 3 having conductors 1 arranged at a required pitch.
To cover both sides. FIG. 11A shows FWC, and FIG.
Is the case of FPC. When connecting to the power supply side and the electrical component side using the flat wire harness 4, FIG.
As shown in (1), connectors 5, 6 are attached to both ends in the length direction.

[0003]

The length L of the flat wire harness 4 is determined by the connectors 5, 6 connected to both ends.
When the distance between the connectors 5 and 6 is long, it is necessary to use a flat wire harness with a long overall length L, while the distance between the connectors 5 and 6 is small. If the length is short, it is necessary to use one having a short overall length L. That is, if the length L of the flat wire harness 4 is shorter than the distance between the connectors 5 and 6, it cannot be used naturally. Conversely, if the length L of the flat wire harness 4 is too long than the distance between the connectors 5 and 6, an extra portion is generated in the flat wire harness, and the extra portion drips, causing other components to drop. There is also a danger that a short circuit will occur.

[0004] The flat wire harness 4 is manufactured continuously, and is usually cut in a predetermined length by a cutting machine. Therefore, the total length L of the flat wire harness 4 is the length set by the cutting machine. ing. In addition, by changing the cutting length by the cutting machine, the total length L is, for example, 250 cm to 50 cm.
Several types of flat wire harnesses are provided, differing in several steps up to cm.

[0005] However, the length of the flat wire harness required in accordance with the place of use is variously different, and the above-mentioned problem is not solved even if a plurality of types of pre-cut flat wire harnesses are selected and used. Occur. Changing the cutting length of the flat wire harness to the required length according to the place of use solves the problem, but it is necessary to change the setting of the cutting length of the cutting machine each time,
It is almost impossible in reality.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a flat wire harness having a predetermined length which can be extended and contracted, and a flat wire harness having a fixed length is used in various places having different required lengths. The purpose is to be able to do it.

[0007]

In order to achieve the above object, according to the present invention, a flat wire harness is folded up and down in a length direction to have a required length. Arranged on both sides in the width direction, a pair of upper and lower holding pieces for holding the flat wire harness, and connected to one end of the both holding pieces,
The flat wire harness includes a support portion disposed on one side in the width direction, and an adjusting rod protruding from both sides of the support portion and extending along the length direction of the flat wire harness, and folded back in the length direction. A flat wire harness length adjusting member configured to insert a bending portion provided at the tip of the adjustment rod into a folded end of the flat wire harness to position and hold the folded portion of the flat wire harness. is there.

The adjusting rod of the adjusting member can be extended and contracted.
It is preferable that the length of the flat wire harness can be arbitrarily adjusted. For example, a through-groove or a through-hole is formed in the support portion, and an adjusting rod in which a pair of right and left divided adjusting rods are adjusted in length and integrally connected is inserted and fixed in the through-hole. At this time, the connection ends of the left and right adjustment rods are formed by a hollow large-diameter shaft portion and a small-diameter shaft portion, and a screw-through hole is provided in the large-diameter shaft portion, and the small-diameter shaft portion has a predetermined spacing in the axial direction. A plurality of screw holes are provided, and the small-diameter shaft portion is slidably fitted inside the large-diameter shaft portion and screwed to make it expandable and contractable. It goes without saying that the left and right adjustment rods may be integrally provided so as to protrude from the support portion.

[0009] The tips of the pair of upper and lower holding pieces extend to the other side in the width direction of the flat wire harness facing the support portion, and are provided with claw portions bent in directions approaching each other from the tip. The portion is locked to the other side in the width direction of the flat wire harness. Therefore, the flat wire harness that is folded back and stacked is held in the stacked state by engaging one end in the width direction with the support portion and the other end with the claw portion. A lock portion may be provided on a claw portion protruding from the upper and lower holding pieces in a direction approaching each other to lock each other.

[0010]

The length adjusting member is folded in the longitudinal direction in order to make the flat wire harness a required length, and then the adjusting rod is inserted into a curved portion formed at the folded end, and the length is adjusted. The upper and lower holding pieces are externally fitted to the overlapped and laminated portions, and the flat wire harness is folded back and fixed in a state where the length is adjusted. In this way, the length of the flat wire harness can be easily adjusted, the surplus portion of the flat wire harness does not drop, and the flat wire harness does not interfere with other components. Absent.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. Since the structure of the flat harness itself is the same as the structure shown in FIGS. 10 and 11, the same reference numerals are given and the description is omitted.

FIGS. 1 to 4 show a first embodiment of the present invention. The flat wire harness 4 is folded back in the length direction to fold the surplus portion, and an adjustment member 10 is used to hold the folded portion. A fixed length flat wire harness 4 is adjusted to a required length.

The length adjusting member 10 is formed of a resin, and as shown in FIG. 1, a pair of holding pieces 13A and 13B project from the upper and lower ends on the inner surface side of the rectangular support portion 11, and A pair of L-shaped adjustment rods 1 from both left and right end faces
2A and 12B protrude.

The width W1 of the pair of holding pieces 13A, 13B
Are set slightly larger than the width W2 of the flat wire harness 4, and the claw portions 13A-1 and 13B-1 protruding inward are provided at the ends thereof. Further, the holding pieces 13A and 13B are connected to the claw portion 13A.
-1, 13B-1 are formed in advance so that the tip side provided with -1, 13B-1 is inclined in a direction approaching each other.

The adjusting rods 12A and 12B projecting in a direction perpendicular to the holding pieces 13A and 13B have a circular cross section, and the tip end is bent in the same direction as the holding piece projecting direction to form a bending portion 12A-1. , 12B-1. The length L of the bending portions 12A-1 and 12B-1 is
A and 13B have substantially the same size as the width W1.

Next, a process of assembling the adjusting member 10 having the above-described configuration to the flat wire harness 4 will be described. First, as shown in FIG. 2, the surplus portion of the flat wire harness 4 is folded back in the length direction of the flat wire harness 4 as shown. By this folding, curved portions 4a and 4b that are continuous up and down at the bent end are formed.

Next, the length adjusting member 10 is arranged at the folded portion of the flat wire harness 4, and its support portion 11 is positioned on one side in the width direction, and the adjusting rod 12A,
The bending portions 12A-1 and 12B-1 at both ends of 12B are inserted into the curved portions 4a and 4b of the flat wire harness 4 and attached as shown in FIG.

The support portion 11 of the length adjusting member 10 is flattened so as to be folded and stacked in three stages.
Is located in the approximate center. As shown in FIG. 4, the upper and lower holding pieces 13A and 13B protruding from the support portion 11 protrude from both sides on the upper and lower surfaces of the laminated flat wire harness 4, and the claw portions 13A-1 and 13B- at the tip end. 1 project from the other side of the flat wire harness 4 and
The wire harness 4 is locked to the other end face in the width direction.

As described above, by attaching the length adjusting member 10 to the folded flat wire harness 4, the length of the flat wire harness 4 can be adjusted. There is no interference. Further, since the bending portion 12b of the adjustment rod 12 to be inserted is formed into a circular cross section by resin, the flat wire harness is not damaged.

FIGS. 5 and 6 show an adjusting member 1 according to a second embodiment.
5, the adjusting member 15 has an L-shaped adjusting rod 12A, shown in the first embodiment, whereas the adjusting member 10 of the first embodiment integrally forms the support portion and the adjusting rod. 1
An adjusting rod 17 integrally formed with 2B in a U-shape is provided, and the adjusting rod 17 is detachable from the support portion 16. The detailed description of the same components as in the first embodiment is omitted.

As shown in FIG. 6, the supporting portion 16 is located at a position near the inner surface of the holding pieces 19A, 19B on the protruding side.
Further, a continuous through hole 18 is provided from one side to the other side. In addition, an opening 16 a that is continuous with the through hole 18 is provided on the inner surface of the support 16. The adjustment rod 1
7 is a through hole 18 of the support portion 16 as shown in FIG.
And bent at both ends so that
7A-1 and 17B-1 are provided.

In the second embodiment having the above structure, the entire length of the flat wire harness 4 can be adjusted in the same manner as in the first embodiment, and the surplus portion of the flat wire harness 4 for adjusting the length can be adjusted. Adjust the adjusting rod 17 to the length,
The adjusting rod 17 is replaceable. Therefore, by preparing the adjusting rods 17 having different lengths, the length of the flat wire harness can be adjusted in a wider range.

FIGS. 7 and 8 show the adjusting rod 20 of the third embodiment.
As shown in FIG. 7, the adjusting rod 20 is formed of a hollow large-diameter shaft portion 21A and a small-diameter shaft portion 21B fitted inside the large-diameter shaft portion 21. And one end of the small-diameter shaft portion 21B is bent to form the bending portions 21A-1, 21B.
-1 is formed. At the other end of the large-diameter shaft portion 21A, an insertion hole 21A-2 for a screw is provided.
1B is provided with a plurality of screw holes 21 at predetermined intervals in the length direction.
B-2 is provided.

The adjusting rod 20 is configured such that the small-diameter shaft portion 21B is slidably fitted inside the large-diameter shaft portion 21A so as to be expandable and contractable, and that the insertion hole 21 is inserted from the outside of the large-diameter shaft portion 21A.
A-2 and screw holes 21B-2, as shown in FIG.
The length of the adjusting rod is adjusted by screwing and fixing the screw 23. At this time, the insertion hole 21A-2 and the screw hole 21B
Reference numeral -2 denotes a state in which the large-diameter shaft portion 21A and the small-diameter shaft portion 21B are connected to each other, and the bent portions 21A-1 and 21B-1 are formed so as to project in the same direction and form a U-shape.

The adjusting member of the third embodiment adjusts the total length of the flat wire harness 4 using the adjusting rod 20 having the above-described structure and the support portion 16 shown in the second embodiment. More specifically, after adjusting the length of the adjusting rod 20 in accordance with the length of the surplus portion of the flat wire harness 4, the adjusting rod 20 is fitted into the through hole 18 of the support portion 16 and attached. As in the example, the length of the surplus portion of the flat wire harness 4 is adjusted.

The length adjusting member of the present invention is not limited to the above-described configuration. For example, the upper and lower holding pieces shown in the first to third embodiments may be configured as shown in FIG. That is, the holding piece 25A projecting from the upper side of the support portion 24 is made to protrude through the thin portion 26, and the upper and lower holding pieces 25
Bending pieces 25A-1, 25B-1 protruding in directions approaching each other are provided at the tips of A, 25B. In addition, one of the bent pieces 25A-1 has a locking claw 2 protruding inward.
5A-2 is provided, and the other bent piece 25B-1 is provided with a locking hole 25B-2 for locking to the claw 25A-2.

As described above, when the locking mechanisms are provided at the tips of the holding pieces 25A and 25B and locked to each other, one end in the width direction of the flat wire harness 4 folded and laminated is the supporting portion 24 and the other end is the above-mentioned. It is closed by the lock part by the locking between the locking claw part 25A-2 and the locking hole 25b-2, it can be more securely prevented from coming off from the width direction, and it can be folded back, laminated and adjusted to the length adjusted state. Can be retained.

[0028]

As is clear from the above description, in the flat wire harness length adjusting member of the present invention, the bending portion of the adjusting rod is provided on the curved portion formed by folding the flat wire harness in the length direction. And the flat wire harness can be adjusted by fixing the flat wire harness by externally fitting the holding piece of the support portion to the folded portion. Therefore, flat
Since the wire harness does not drop, it does not interfere with other parts.

Further, by making the adjustment rod replaceable or length adjustable, it is possible to improve workability and to provide an inexpensive adjustment member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an adjusting member of a first embodiment.

FIG. 2 is a perspective view showing a state before the adjustment member is attached to a flat wire harness.

FIG. 3 is a perspective view showing a state where the adjustment member is attached to a flat wire harness.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a perspective view showing an adjusting member of a second embodiment.

FIG. 6 is a perspective view showing a support portion of the second embodiment.

FIG. 7 is a perspective view showing an adjusting rod of a third embodiment.

FIG. 8 is a perspective view showing a state where adjustment rods are connected.

FIG. 9 is a cross-sectional view showing a modification of the holding piece.

FIG. 10 is a perspective view showing a flat wire harness.

11A and 11B are cross-sectional views of a flat wire harness.

[Explanation of symbols]

 Reference Signs List 4 Flat wire harness 4a, 4b Bending part 10 Adjusting member 11 Support part 12 Adjusting rod 12A, 12B Rod part 12A-1, 12B-1 Refracting part 13A, 13B Nipping piece 13A-1, 13B-1 Claw part

Claims (2)

(57) [Claims] 1. An adjusting member for folding a flat wire harness in a length direction to have a required length, wherein the adjusting member is arranged in the width direction on both upper and lower surfaces of the flat wire harness to be folded and stacked. A pair of upper and lower holding pieces for holding the wire harness, a support portion connected to one end of the both holding pieces and disposed on one side in the width direction of the flat wire harness; -An adjustment rod extending along the length of the wire harness is provided, and the bent portion at the tip of the adjustment rod is inserted into the folded end of the flat wire harness that is folded back in the length direction to fold the flat wire harness. A flat wire harness length adjusting member configured to position and hold a portion. 2. The length adjusting member according to claim 1, wherein an adjusting rod of said adjusting member is extendable.