JP2022112762A - Wiring harness - Google Patents

Abstract

To provide a wiring harness capable of making a twisted pair cable installation error difficult to occur.SOLUTION: A wiring harness 1 includes a twisted pair cable 4 in which a plurality of electric wires 2 are twisted, a plurality of cavity blocks 8 to which the twisted pair cables 4 are attached, and a housing 13 having a storage portion 12 for storing the cavity blocks 8. The wiring harness 1 includes an identification portion 15 used for identifying the combination of the cavity block 8 and the storage portion 12. The identification portion 15 has a concave-convex structure in which the combination of the cavity block 8 and the storage portion 12 is set by fitting the concave-convex portions forming a pair with each other.SELECTED DRAWING: Figure 2

Description

The present invention relates to wire harnesses having twisted pair cables.

2. Description of the Related Art Conventionally, as one type of wire harness, a wire harness using a twisted pair cable in which electric wires are twisted in order to reduce noise generated in a transmission signal is well known (see Patent Document 1, etc.).

JP 2015-65170 A

In a wire harness having this type of twisted pair cable, noise is generated at untwisted portions. Therefore, when attaching the wire harness, it may be necessary to retwist the twisted pair cable. For this work, for example, if there is a twisted untwisted twisted pair cable, the twisted pair cable is removed from the housing, the twisted pair cable is retwisted, and the twisted pair cable is reattached to the housing.

Here, the number of twisted pair cables that need to be retwisted is not limited to one, but may be multiple. In this case, these twisted pair cables need to be retwisted and then returned to the housing, but there is a possibility that the twisted pair cables may be erroneously attached to a different location than the correct location before removal. Therefore, there is a need for a countermeasure to prevent erroneous installation of twisted pair cables after retwisting.

SUMMARY OF THE INVENTION An object of the present disclosure is to provide a wire harness that makes it difficult for twisted pair cables to be attached incorrectly.

A wire harness that solves the above problem comprises a twisted pair cable in which a plurality of wires are twisted together and has terminals at the ends of the wires, a plurality of cavity blocks to which the terminals of the twisted pair cables are attached, and the cavity blocks. a housing having a plurality of storage portions for each cavity block; and an identification portion used for identifying a combination of the cavity block and the storage portion.

According to the present disclosure, erroneous installation of twisted pair cables can be made less likely to occur.

FIG. 1 is a perspective view of a wire harness of one embodiment. FIG. 2 is an exploded perspective view of the wire harness. FIG. 3 is an exploded view with the wires removed from the cavity block. FIG. 4 is a cross-sectional view taken along line IV--IV of FIG. FIG. 5 is a cross-sectional view taken along line VV of FIG. FIG. 6 is a back view of the wire harness. FIG. 7 is a work diagram for attaching the electric wire to the cavity block. FIG. 8 is a work diagram for removing the cavity block from the housing. FIG. 9 is a work diagram for retwisting the electric wire. FIG. 10 is a work diagram for returning the cavity block to the housing. FIG. 11 is a cross-sectional view of another wire harness. FIG. 12 is a cross-sectional view of a wire harness according to another example. FIG. 13 is a cross-sectional view of a wire harness according to another example. FIG. 14 is a cross-sectional view of a wire harness according to another example. FIG. 15 is a cross-sectional view of a wire harness according to another example. FIG. 16 is a cross-sectional view of a wire harness according to another example. FIG. 17 is a cross-sectional view of a wire harness according to another example.

First, the embodiments of the present disclosure are listed and described.
[1] A wire harness according to the present disclosure includes a twisted pair cable in which a plurality of electric wires are twisted and has a terminal at the end of the electric wire, a plurality of cavity blocks to which the terminals of the twisted pair cable are attached, and the cavity block. a housing having a plurality of storage portions for each cavity block; and an identification portion used for identifying a combination of the cavity block and the storage portion.

According to the configuration of this example, after retwisting the twisted pair cable, when returning the twisted pair cable to the housing, it is possible to reattach the twisted pair cable to the housing while confirming the correct position before removal with the identification part. becomes. Therefore, it is possible to make it difficult for twisted pair cables to be attached incorrectly.

[2] The identifying portion includes a convex portion provided on one of the cavity block and the storage portion, and a concave portion provided on the other of the cavity block and the storage portion, and the recesses and protrusions forming a pair with each other are formed. It is a fitting structure. According to this configuration, it is possible to make the structure of the identification section a simple structure combining unevenness.

[3] The wire harness includes an engaging mechanism for detachably attaching the cavity block accommodated in the accommodating portion to the housing. According to this configuration, the cavity block with the twisted pair cable assembled can be firmly fixed to the housing by the engaging mechanism. Further, when the twisted pair cable is retwisted, the cavity block can be easily removed from the housing by disengaging the engagement mechanism.

[4] Each of the plurality of cavity blocks is provided with the same shape except for the identification portion, and each of the plurality of storage portions is provided with the same shape except for the identification portion. According to this configuration, even if the cavity block and the storage section have the same shape, when the twisted pair cable after retwisting is reattached to the housing, the attachment destination is confirmed by the identification section, thereby identifying the twisted pair cable. It is possible to make it difficult to cause cable attachment errors.

[5] Each of the plurality of identification portions is arranged at a different position for each of the storage portions and is formed in the same shape as each other. According to this configuration, it is possible to make each of the identification portions easy to identify and to have a simple shape.

[6] Each of the plurality of identification portions is arranged at the same position for each of the storage portions, and is formed with a size different from each other. According to this configuration, it is possible to make each of the identification portions easy to identify and to have a simple shape.

[7] Each of the plurality of identification portions is arranged at the same position for each of the storage portions and is formed in a shape different from each other. According to this configuration, it is possible to make each of the identification portions easy to identify and to have a simple shape.

[8] The housing is provided in the shape of a box, and the identification portion is arranged along the reference line when a line along the width direction or the height direction of the housing is taken as a reference line. According to this configuration, when the cavity block is attached to the housing, it is possible to set the orientation of the cavity block so that all of the identification portions face the same side. Therefore, it is possible to improve the workability when reattaching the cavity block to the housing after the twisted pair cable has been retwisted.

[Details of the embodiment of the present disclosure]
A specific example of the wire harness of the present disclosure will be described below with reference to the drawings. The present invention is not limited to these exemplifications, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims. In each drawing, part of the configuration may be exaggerated or simplified for convenience of explanation. Also, the dimensional ratio of each part may differ from the actual one.

As shown in FIGS. 1 and 2 , a wire harness 1 for electrically connecting electrical components includes a plurality of electric wires 2 and connectors 3 attached to ends of the electric wires 2 . The wire harness 1 electrically connects electrical components by fitting and attaching its own connector 3 to a mating connector (not shown) to which it is connected.

The wire harness 1 includes a plurality of sets of twisted pair cables 4 formed by twisting a plurality of (two in this example) electric wires 2 . For example, three sets of twisted pair cables 4 are provided. In this example, the twisted pair cable 4 includes a first twisted pair cable 4a at the left end of the page, a second twisted pair cable 4b at the center of the page, and a third twisted pair cable 4c at the right end of the page.

The wire harness 1 includes a plurality of cavity blocks 8 to which terminals 7 of twisted pair cables 4 are attached. The cavity blocks 8 of this example are provided in the same number as the twisted pair cables 4, and in this example, three are provided. In this example, the cavity block 8 includes a first cavity block 8a to which the first twisted pair cable 4a is attached, a second cavity block 8b to which the second twisted pair cable 4b is attached, and a third cavity block 8b to which the third twisted pair cable 4c is attached. and a cavity block 8c.

As shown in FIG. 3, the twisted pair cable 4 has terminals 7 at the ends of each wire 2 . Each of the cavity blocks 8 is provided with two terminal insertion portions 9 into which the terminals 7 of the electric wires 2 are inserted. The terminals 7 are inserted and fixed into the terminal inserting portions 9 by various methods such as press fitting, snap-fit engagement, and adhesion. Each of the terminal insertion portions 9 is preferably formed in the same shape, for example. In the case of this example, the terminal insertion portion 9 has an opening formed in a substantially rectangular shape.

As shown in FIGS. 1 and 2 , the wire harness 1 includes a housing 13 having a plurality of housing portions 12 for housing the cavity blocks 8 for each cavity block 8 . The housing 13 is provided in a box shape, and the openings of the storage sections 12 are arranged side by side. In this example, the storage section 12 includes a first storage section 12a for storing the first cavity block 8a, a second storage section 12b for storing the second cavity block 8b, and a third storage section 12b for storing the third cavity block 8c. and a storage portion 12c. The first storage portion 12a, the second storage portion 12b, and the third storage portion 12c are arranged along the width direction of the housing 13 (the Y-axis direction in FIGS. 1 and 2).

As shown in FIG. 2, the wire harness 1 has an identification portion 15 used to identify the combination of the cavity block 8 and the storage portion 12. As shown in FIG. The identifying portion 15 includes, for example, a convex portion 16 provided on one of the cavity block 8 and the storage portion 12, and a concave portion 17 provided on the other of the cavity block 8 and the storage portion 12. It is a structure that fits together. Incidentally, in the case of this example, the cavity block 8 is provided with the concave portion 17 and the storage portion 12 is provided with the convex portion 16 . The convex portion 16 is provided along the depth direction (the X-axis direction in FIG. 2) on the upper inner surface of the storage portion 12 . The concave portion 17 is provided on the upper surface of the cavity block 8 along the insertion direction (X-axis direction in FIG. 2) when the cavity block 8 is inserted into the storage portion 12 .

In the case of this example, the identification portion 15 provided in the first cavity block 8a and the first storage portion 12a is referred to as the "first identification portion 15a", and the identification portion provided in the second cavity block 8b and the second storage portion 12b. 15 is referred to as a "second identification section 15b", and the identification section 15 provided in the third cavity block 8c and the third storage section 12c is referred to as a "third identification section 15c".

Each of the plurality of cavity blocks 8 has the same shape except for the identification portion 15 . In the case of this example, these cavity blocks 8 are formed in a substantially rectangular parallelepiped shape having terminal insertion portions 9, for example. Each of the storage portions 12 has the same shape except for the identification portion 15 . In the case of this example, the opening cross section of these storage portions 12 is formed in a square shape. When the cavity block 8 to which the twisted pair cable 4 is attached is assembled into the storage portion 12 of the housing 13, the terminal 7 of the electric wire 2 of the twisted pair cable 4 is electrically connected to the terminal (not shown) of the mating connector to which it is connected. .

As shown in FIG. 4, each identification portion 15 is arranged on a first contact surface 18 where the upper surface of the cavity block 8 and the inner surface of the storage portion 12 are in contact with each other among the contact surfaces of the cavity block 8 and the storage portion 12. ing. That is, in the case of this example, the first identification portion 15a to the third identification portion 15c are arranged in the width direction or the height direction of the housing 13 (the width direction shown in this example) as the reference line L1. It is arranged along the line L1. The first identification portion 15a is arranged at a position closer to one end (leftward in FIG. 4) in the width direction of the housing 13 . The second identification portion 15b is arranged at a position closer to one end (closer to the center in FIG. 4) in the width direction of the housing 13 . The third identification portion 15c is arranged at a position closer to one end (rightward in FIG. 4) in the width direction of the housing 13 . As described above, each of the plurality of identification portions 15 is arranged at a different position for each storage portion 12 and formed in the same shape.

As shown in FIGS. 5 and 6 , the wire harness 1 includes an engagement mechanism 20 for detachably attaching the cavity block 8 housed in the housing portion 12 to the housing 13 . In the case of this example, the engagement mechanism 20 has a concave-convex structure that engages a convex provided on one of the housing 13 and the cavity block 8 and a concave provided on the other. For example, a snap-fit structure is used. It is The engaging mechanisms 20 are provided in the same number as the cavity blocks 8, and in the case of this example, are provided at three locations.

The engagement mechanism 20 includes a claw portion 21 provided on the housing 13 and a groove portion 22 provided on the cavity block 8 . The claw portion 21 has, for example, a leaf spring structure, and a protrusion 23 is formed at the tip. A plurality of (two in this example) claw portions 21 are provided for one cavity block 8 . The groove portion 22 has, for example, a linear concave shape, and is provided so as to be able to engage with a plurality of claw portions 21 forming a set.

Next, the operation of the wire harness 1 of this embodiment will be described.
As shown in FIG. 7, when attaching the wires 2 to the housing 13 through the cavity blocks 8, first, the housings 13 in which the cavity blocks 8 are accommodated in the respective accommodating portions 12 are prepared. That is, the cavity block 8 to which the electric wire 2 is not attached is left attached to the storage portion 12 of the housing 13 .

Subsequently, the wires 2 are sequentially attached to the terminal insertion portions 9 of the cavity block 8 attached to the housing 13 . At this time, the wires 2 are inserted into the respective terminal insertion portions 9 of the cavity block 8 and attached while referring to a specification (not shown) indicating the attachment positions of the wires 2 to the cavity block 8 . The specifications include, for example, terminal names, sizes, wire colors, and the like. Then, according to the specifications, suitable electric wires 2 are sequentially inserted into the terminal insertion portions 9 of the cavity block 8 and attached.

As shown in FIG. 8, after all the wires 2 are attached to the cavity block 8, the cavity block 8 with the wires 2 attached thereto is removed from the housing 13. As shown in FIG. That is, in order to retwist the electric wires 2 attached to the cavity block 8, the cavity block 8 attached with the electric wires 2 is removed from the housing 13 once.

As shown in FIG. 9, the wires 2 of the cavity block 8 removed from the housing 13 are retwisted. Specifically, for example, the two wires 2 are retwisted by rotating the cavity block 8 in the direction of the arrow in the drawing while holding the two wires 2 . The operation of retwisting the electric wires 2 is performed in each of the first cavity block 8a, the second cavity block 8b, and the third cavity block 8c.

As shown in FIG. 10 , each of the cavity blocks 8 in which the wires 2 have been retwisted is returned to the housing 13 . At this time, while confirming whether or not the unevenness (the convex portion 15 and the concave portion 16) of the identification portion 15 (the first identification portion 15a, the second identification portion 15b, and the third identification portion 15c) match, the cavity block 8 is Return to housing 13 .

In the case of this example, the first cavity block 8a is placed in the first housing portion 12a having the convex portion 16 aligned with the concave portion 17 of the first cavity block 8a. Similarly, the second cavity block 8b is put into the second storage portion 12b and the third cavity block 8c is put into the third storage portion 12c while confirming the positions of the unevenness. After all the cavity blocks 8 are put into the housing 13, the cavity blocks 8 are fixed to the housing 13 by fixing means (not shown).

According to the wire harness 1 of the above embodiment, the following effects can be obtained.
(1) The wire harness 1 includes a twisted pair cable 4 , a cavity block 8 , a housing 13 and an identification section 15 . A twisted pair cable 4 is formed by twisting a plurality of electric wires 2 and has terminals 7 at the ends of the electric wires 2 . A plurality of cavity blocks 8 are provided, and terminals 7 of the twisted pair cable 4 are attached thereto. The housing 13 has a plurality of storage portions 12 for storing the cavity blocks 8 for each cavity block 8 . The identification section 15 is used for identification of the combination of the cavity block 8 and the storage section 12 .

According to the configuration of this example, when returning the twisted pair cable 4 to the housing 13 after retwisting the twisted pair cable 4, the correct position before removal is confirmed by the identification unit 15, and the twisted pair cable 4 is returned to the housing 13. can be reattached to the Therefore, it is possible to make it difficult for the twisted pair cable 4 to be attached erroneously.

(2) The work of reattaching the cavity block 8 to the housing 13 can be a simple work of simply checking the identification portion 15 .
(3) The identifying portion 15 includes a convex portion 16 provided on one of the cavity block 8 and the storage portion 12, and a concave portion 17 provided on the other of the cavity block 8 and the storage portion 12. It is a structure that fits together. According to this configuration, it is possible to make the structure of the identification section 15 a simple structure in which unevenness is combined.

(4) The wire harness 1 includes an engaging mechanism 20 for detachably attaching the cavity block 8 stored in the storage portion 12 to the housing 13 . According to this configuration, the cavity block 8 with the twisted pair cable 4 assembled can be firmly fixed to the housing 13 by the engagement mechanism 20 . Further, when the twisted pair cable 4 is retwisted, the cavity block 8 can be easily removed from the housing 13 by disengaging the engagement mechanism 20 .

(5) Each of the plurality of cavity blocks 8 has the same shape except for the identifying portion 15 . Each of the storage portions 12 has the same shape except for the identification portion 15 . According to this configuration, even if the cavity block 8 and the housing portion 12 have the same shape, when the retwisted twisted pair cable 4 is reattached to the housing 13, the attachment destination is confirmed by the identification portion 15. By doing so, erroneous installation of the twisted pair cable 4 can be made less likely to occur.

(6) Each of the plurality of identification portions 15 is arranged at a different position for each storage portion 12 and formed in the same shape. According to this configuration, each identification portion 15 can be easily identified and can have a simple shape.

(7) The housing 13 is provided in a box shape. The identification portion 15 is arranged along the reference line L1 when a line along the width direction or the height direction of the housing 13 is defined as the reference line L1. According to this configuration, when the cavity block 8 is attached to the housing 13, it is possible to set the orientation of the cavity block 8 so that the identification portions 15 all face the same side. Therefore, it is possible to improve workability when reattaching the cavity block 8 to the housing 13 after the twisted pair cable 4 has been retwisted.

In addition, this embodiment can be changed and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- As shown in FIG. 11, the number of cavity blocks 8 housed in one housing 13 is not limited to three, and may be more than three. Also, the number of cavity blocks 8 may be only two.

- As shown in FIG. 12, the storage part 12 of the housing 13 is not limited to being provided in only one row in the housing 13, but may be provided in a plurality of rows (in the case of FIG. 12, two rows). In the case of FIG. 12, the identification portion 15 provided in the cavity block 8 in the first row is such that the upper surface of the cavity block 8 and the inner surface of the storage portion 12 are the contact surfaces of the cavity block 8 and the storage portion 12. It is arranged on the contacting first contact surface 18 . Further, the identification portion 15 provided in the cavity block 8 in the second row is a second contact surface where the lower surface of the cavity block 8 and the inner surface of the storage portion 12 are in contact with each other among the contact surfaces of the cavity block 8 and the storage portion 12 . 26 is located.

- As shown in FIG. 13, the identifying portion 15 is arranged on a third contact surface 27 of the contact surfaces of the cavity block 8 and the storage portion 12, where the side surface of the cavity block 8 and the inner surface of the storage portion 12 contact each other. may

- As shown in FIG. 14 , one of the plurality of cavity blocks 8 attached to the housing 13 may be configured without the identifying portion 15 .
- As shown in FIG. 15 , the identifying portion 15 may have a structure in which the cavity block 8 is provided with a convex portion 16 and the storage portion 12 of the housing 13 is provided with a concave portion 17 .

- As shown in FIG. 16, each of the plurality of identification portions 15 may be arranged at the same position for each storage portion 12 and may be formed in different sizes. In the case of FIG. 16, an example is given in which the size gradually increases from the identification portion 15 on the left end of the paper surface toward the identification portion 15 on the right end of the paper surface. According to this configuration, each identification portion 15 can be easily identified and can have a simple shape.

- As shown in FIG. 17, each of the plurality of identification portions 15 may be arranged in the same position for each storage portion 12 and may be formed in a shape different from each other. In the case of FIG. 17, the identification portion 15 on the left end of the paper surface is formed in a rectangular cross section, the identification portion 15 in the middle of the paper surface is formed in a triangular cross section, and the identification portion 15 on the right end of the paper surface is formed in a semicircular cross section. is mentioned. According to this configuration, each identification portion 15 can be easily identified and can have a simple shape.

The operation of retwisting the twisted pair cables 4 is not limited to the operation of removing all the twisted pair cables 4, and only some of the twisted pair cables 4 may be retwisted.
- The unevenness of the cavity block 8 is not limited to being arranged on the upper surface, the lower surface, or the side surface of the cavity block 8, and may be arranged on the tip surface of the cavity block 8, for example.

- The identification part 15 is not limited to a concavo-convex structure, and may be a structure in which combinations are represented by colors, for example.
- The shape of the terminal 7 of the twisted pair cable 4 can be appropriately changed to other structures and shapes other than those of the embodiments.

- The shape of the external appearance of the cavity block 8 is not limited to being the same, and different shapes may be combined.
- The twisted pair cable 4 may be a cable in which three or more electric wires 2 are twisted together.

The engagement mechanism 20 is not limited to a snap-fit structure in which claws are fitted to each other, and may be any structure as long as the cavity block 8 can be attached to and detached from the housing 13 .
- The wire harness 1 is not limited to in-vehicle use, and may be used in other devices and devices.

- Although the present disclosure has been described with reference to examples, it is understood that the present disclosure is not limited to such examples or structures. The present disclosure also includes various modifications and modifications within the equivalent range. In addition, various combinations and configurations, as well as other combinations and configurations, including single elements, more, or less, are within the scope and spirit of this disclosure.

1 wire harness 2 electric wire 3 connector 4 twisted pair cable 4a first twisted pair cable 4b second twisted pair cable 4c third twisted pair cable 7 terminal 8 cavity block 8a first cavity block 8b second cavity block 8c third cavity block 9 terminal insertion part 12 storage part 12a first storage part 12b second storage part 12c third storage part 13 housing 15 identification part 15a first identification part 15b second identification part 15c third identification part 16 convex part 17 concave part 18 first contact surface 20 engagement Coupling mechanism 21 Claw 22 Groove 23 Protrusion 26 Second contact surface 27 Third contact surface L1 Reference line

Claims (8)

a twisted pair cable in which a plurality of electric wires are twisted together and having terminals at the ends of the electric wires;
a plurality of cavity blocks to which the terminals of the twisted pair cable are attached;
a housing having a plurality of storage portions for storing the cavity blocks for each of the cavity blocks;
A wire harness comprising an identification section used to identify a combination of the cavity block and the storage section. The identifying portion has a convex portion provided on one of the cavity block and the storage portion, and a concave portion provided on the other of the cavity block and the storage portion, and has a structure in which the recesses and protrusions forming a pair are fitted to each other. The wire harness according to claim 1. 3. The wire harness according to claim 1, further comprising an engagement mechanism for detachably attaching said cavity block accommodated in said accommodating portion to said housing. Each of the plurality of cavity blocks has the same shape except for the identification portion,
The wire harness according to any one of claims 1 to 3, wherein each of the plurality of storage portions has the same shape except for the identification portion. The wire harness according to any one of claims 1 to 4, wherein each of the plurality of identification portions is arranged at a different position for each of the storage portions and formed in the same shape. The wire harness according to any one of claims 1 to 4, wherein each of the plurality of identification portions is arranged at the same position for each of the storage portions and has a different size. The wire harness according to any one of claims 1 to 4, wherein each of the plurality of identification portions is arranged at the same position for each of the storage portions and formed in a shape different from each other. The housing is provided in a box shape,
The wire according to any one of claims 1 to 7, wherein the identification portion is arranged along a reference line that extends in the width direction or the height direction of the housing. Harness.

Images