JP6852781B2 - Wire holders and wire harnesses - Google Patents

Description

The present invention relates to an electric wire holder for holding an electric wire distributed to an electric parking brake (hereinafter referred to as "EPB") of a vehicle, and a wire harness provided with the electric wire holder.

Conventionally, an electric wire holder such as a fixing bracket has been used to fix an electric wire distributed to an EPB of a vehicle to a vehicle body. In general, as shown in the cross-sectional view of FIG. 3, the EPB electric wire has a plurality of core wires 22 each coated with an inner insulating coating material 24 and a relatively thick core wire 22 provided by surrounding the plurality of core wires 22. It contains a thick outer insulating coating material 26 and an intervening insulating material 28 interposed between the insulating coating material 24 and the insulating coating material 26 (see, for example, Patent Document 1).

FIG. 7 shows an example of the conventional electric wire holder 100 used for the EPB electric wire 20. The electric wire holder 100 has a fixing bracket 101 and a tubular rubber member 106 made of EPDM (ethylene propylene diene rubber) or the like. The fixing bracket 101 extends from a plate-shaped fixing portion 102 in which one end 102b is fixed to a support such as a support panel 30 provided on the vehicle body by bolts 103 and the other end 102c of the fixing portion 102. It is provided with a holding portion 104 for holding the EPB electric wire 20.

The holding portion 104 has an opening 104b for receiving the tubular rubber member 106 into which the EPB electric wire 20 is inserted between the tip portion 104e and the other end portion 102c of the fixing portion 102, and the tubular rubber member 106. It has a concave portion 104a that is accommodated through the opening 104b. Then, the holding portion 104 is crimped by the crimping tool to reduce the diameter of the space of the concave portion 104a, and the frontage of the opening 104b is sized so that the tubular rubber member 106 cannot escape. By crimping in this way, the tubular rubber member 106 is deformed and comes into close contact with the EPB electric wire 20, so that the EPB electric wire 20 is less likely to laterally shift with respect to the fixing bracket 101 in the length direction. ..

JP-A-2002-325328

However, the conventional electric wire holder 100 shown in FIG. 7 requires a tubular rubber member 106 in addition to the fixing bracket 101, which has been a factor in increasing the cost of parts. Further, since it is necessary to bring the EPB electric wire 20 into close contact with the tube of the tubular rubber member 106, the outer diameter of the EPB electric wire 20 and the inner diameter of the tube of the tubular rubber member 106 are made substantially equal. Therefore, a frictional force is generated between the EPB electric wire 20 and the tubular rubber member 106 during the mounting work, and it is not easy to move the tubular rubber member 106 to a predetermined position of the EPB electric wire 20. Further, when the fixing bracket 101 is attached to the EPB electric wire 20, in addition to the positioning of the fixing bracket 101 with respect to the EPB electric wire 20, the tubular rubber member 106 must be positioned with respect to the fixing bracket 101. The work was not easy.

The present invention has been made to solve the above-mentioned conventional problems, and it is possible to reliably hold the EPB electric wire with a small number of parts, and the electric wire can be easily attached to the EPB electric wire. It is an object of the present invention to provide a holder and a wire harness equipped with the retainer.

In order to achieve the above object, the electric wire holder according to the present invention includes a fixing portion fixed to the vehicle body and a holding portion extending from the fixing portion and holding the electric wire, and the holding portion is the electric wire. The concave portion has an opening for receiving the electric wire and a concave portion for accommodating the electric wire through the opening, and the concave portion has a configuration in which serrations are formed on an inner surface corresponding to a region to be crimped.

As described above, in the electric wire holder according to the present invention, since serrations are formed on the inner surface corresponding to the region crimped by the crimping tool in the concave portion of the holding portion, the pressing force applied by the crimping tool is applied. It can act directly on the outer surface portion of the holding portion having serrations. As a result, the convex portion on the inner surface of the holding portion formed by serrations can be made to bite into the insulating coating material on the outside of the EPB electric wire, and the EPB electric wire can be reliably held without lateral displacement in the length direction.

In addition, since the tubular rubber member that has been used in the past is no longer required, the number of parts can be reduced as compared with the conventional case, and the cost of parts can be reduced. Further, the electric wire holder according to the present invention does not need to advance the EPB electric wire to the tubular rubber member, which has been conventionally performed, and does not need to perform the positioning work of the tubular rubber member, which has been conventionally performed. The work of attaching to the EPB electric wire can be easily performed.

Therefore, the electric wire holder according to the present invention can reliably hold the EPB electric wire with a small number of parts, and can be easily attached to the EPB electric wire.

Further, in the electric wire holder according to the present invention, the serration may include a plurality of grooves parallel to the direction orthogonal to the width direction of the holding portion.

With this configuration, a plurality of grooves parallel to the direction orthogonal to the width direction of the holding portion, that is, the direction orthogonal to the length direction of the held EPB electric wire, and convex portions between the grooves are formed. It is possible to effectively prevent lateral displacement of the EPB electric wire in the length direction.

Further, in the electric wire holder according to the present invention, the serrations may have a configuration including grooves formed in a grid pattern.

With this configuration, it is possible to effectively prevent not only lateral displacement of the EPB electric wire in the length direction but also rotation of the EPB electric wire around the axis in the length direction.

Further, in the electric wire holder according to the present invention, the serration may include a plurality of triangular holes and protrusions standing on one side edge of each hole.

With this configuration, the protrusions can be firmly bitten into the insulating coating material on the outside of the EPB electric wire, so that the EPB electric wire can be stably held without causing the above-mentioned lateral displacement or rotation.

The wire harness according to the present invention includes an electric wire and the electric wire holder according to any one of the above, and the electric wire is held by the electric wire holder.

According to the present invention, it is possible to reliably hold an EPB electric wire with a small number of parts, and to provide an electric wire holder that can be easily attached to the EPB electric wire and a wire harness provided with the same.

It is a perspective view of the electric wire holder which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which the electric wire for EPB is held by the electric wire holder which concerns on 1st Embodiment of this invention. FIG. 2 is a sectional view taken along line III-III of FIG. 2, where FIG. 2A shows a state before the holding portion is crimped, and FIG. 2B shows a state after the holding portion is crimped. The serrations according to the first embodiment of the present invention are shown, (a) is a developed view of a holding portion, and (b) is a sectional view taken along line IV-IV of (a). The serrations according to the second embodiment of the present invention are shown, (a) is a developed view of a holding portion, and (b) is a VV cross-sectional view of (a). The serrations according to the third embodiment of the present invention are shown, (a) is a developed view of a holding portion, (b) is a VI-VI sectional view of (a), and (c) is (a). VII-VII cross-sectional view of. It is a perspective view which shows the state which the electric wire for EPB is held by the conventional electric wire holder.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

(First Embodiment)
The electric wire holder 10 according to the first embodiment holds the electric wire 20 distributed to the EPB of the automobile and is fixed to the support panel 30 which is a support on the vehicle body side. Specifically, as shown in FIGS. 1 and 2, the electric wire holder 10 according to the present embodiment has a fixing portion 12 fixed to a support panel 30 provided on a vehicle body and one end portion of the fixing portion 12. It includes a holding portion 14 that extends from 12c and holds the electric wire 20 that is laid out to the EPB. The electric wire holder 10 can be manufactured, for example, by subjecting a metal plate to punching, bending, drilling, or the like.

As shown in FIG. 3, the EPB electric wire 20 has two core wires 22 each coated with an inner insulating coating material 24 made of polyethylene, for example, and a relatively thick outer insulating coating material 26 made of polyurethane, for example. It is surrounded by. An intervening insulating material 28 made of polyethylene, for example, is interposed between the inner insulating coating material 24 for the core wire and the outer insulating coating material 26. Further, the EPB electric wire 20 may have a configuration in which a shield coating material such as a metal net or a metal foil is provided between the intervening insulating material 28 and the outer insulating coating material 26.

In the present embodiment, the EPB electric wire 20 includes two core wires 22, but the number of core wires is not limited to this, and for example, a signal line for an ABS (Anti-lock Brake System) sensor. Etc. may be further included in the configuration.

As shown in FIGS. 1 and 2, the fixing portion 12 is a plate-shaped metal bracket bent at a right angle at a bent portion 12d at a substantially central position, and a mounting hole 12a is provided at an end portion 12b. The fixing portion 12 can be fixed to the support panel 30 on the vehicle body side with fasteners such as bolts 13 and screws by using the mounting holes 12a.

As shown in FIGS. 1 and 3A, the holding portion 14 has an opening 14b for receiving the EPB electric wire 20 formed between the tip portion 14n of the holding portion 14 and the end portion 12c of the fixing portion 12. It has a concave portion 14a for accommodating the EPB electric wire 20 through the opening 14b. The holding portion 14 is a strip-shaped metal member extending from the end portion 12c of the fixing portion 12, and is curved and bent back at the curved portion 14g to form the concave portion 14a. The portion 12c to the curved portion 14g of the fixed portion 12 is a substantially flat first flat portion 14h, and the portion from the curved portion 14g to the first bent portion 14e is a substantially flat second flat portion 14i. The first bent portion 14e to the second bent portion 14f are flat third flat portions 14j, and the second bent portion 14f to the tip 14d are substantially flat fourth flat portions 14k.

Specifically, the tip portion 14n of the holding portion 14 corresponds to a portion of the third flat portion 14j from the portion closer to the second bent portion 14f to the tip 14d. The opening 14b may be formed between the tip portion 14n of the holding portion 14 and the base portion of the holding portion 14. The width L of the opening 14b is substantially equal to the outer diameter of the EPB electric wire 20, but when the frontage of the opening 14b is easily widened, the width L of the opening 14b is set to the outside of the EPB electric wire 20. It may be smaller than the diameter to some extent.

In the present embodiment, the first to fourth flat portions 14h, 14i, 14j, 14k are provided, but the shape is not limited to this, and the first to fourth flat portions 14h, 14i, 14j, 14k are provided. Some or all of them may be curved. In short, the configuration may be such that a concave portion 14a capable of accommodating the EPB electric wire 20 is formed. Further, the fourth flat portion 14k provided at the tip is inclined so that the distance from the fixed portion 12 becomes larger toward the tip, so that the EPB electric wire 20 can be easily stored. May be omitted.

Further, in the present embodiment, the length from the base portion of the holding portion 14 to the second bent portion 14f that defines the width L of the opening portion 14b is substantially equal to the outer peripheral length of the EPB electric wire 20, but is retained. The length of the portion 14 is not limited to this. If the frontage of the opening 14b of the holding portion 14 becomes smaller than the outer diameter of the EPB electric wire 20 when crimped so that the EPB electric wire 20 does not come out of the opening 14b, the opening 14b is formed from the base of the holding portion 14. 2 The length up to the bent portion 14f may be shorter than the outer peripheral length of the EPB electric wire 20.

As shown in FIG. 3, the concave portion 14a of the holding portion 14 has serrations 16 formed on the inner surface corresponding to the region crimped by the crimping tool. Specifically, the serration 16 is provided on the inner surface of the second flat portion 14i of the holding portion 14 over almost the entire width. The serration 16 may be further provided on the inner surface of the first flat portion 14h, if necessary. At the time of crimping, the pressing force F acts directly on the second flat portion 14i from the crimping tool. Therefore, by forming serrations 16 on the inner surface of the second flat portion 14i, it is provided on the outside of the EPB electric wire 20. The convex portion 16b having the edge portion 16c of the serration 16 can be made to bite into the hard insulating coating material 26. In short, by forming serrations 16 on the inner surface of the holding portion 14 corresponding to the portion where the pressing force by the crimping tool directly acts, the convex portion 16b of the serrations 16 is formed as an insulating coating material 26 on the outer side of the EPB electric wire 20. I try to make sure that it bites into the wire.

FIG. 4A is a developed view of the holding portion 14, and FIG. 4B is a sectional view taken along line IV-IV of FIG. 4A. As shown in FIG. 4, the serration 16 includes a plurality of grooves 16a parallel to the direction Y orthogonal to the width direction X of the holding portion 14. The plurality of grooves 16a are formed on the inner surface of the second flat portion 14i over substantially the entire width thereof. The number of grooves 16a, the spacing between the grooves, the length, width, depth, etc. of each groove 16a can be arbitrarily set according to the holding force required for the EPB electric wire 20. As shown in FIG. 4B, a convex portion 16b is formed between the groove 16a and the groove 16a, and an angular edge portion 16c is formed on the upper end edge of the convex portion 16b. The edge portion 16c has a function of preventing the convex portion 16b from laterally shifting after the convex portion 16b bites into the insulating coating material 26 on the outer side of the EPB electric wire 20.

Each groove 16a of the serration 16 according to the present embodiment is formed as a straight groove in the developed view of FIG. 4A, but the shape is not limited to this, and the shape may be a zigzag bent shape. It may be wavy or wavy. Further, in the cross-sectional view of FIG. 4B, both side walls in each groove are inclined so as to expand toward the upper end so that the width of the upper surface of the convex portion 16b formed between the grooves becomes narrower. The 16b may be easily bitten into the insulating coating material 26 on the outer side of the EPB electric wire 20. Further, although the serration 16 according to the present embodiment has a configuration having a plurality of grooves 16a, a plurality of convex elongated structures may be provided instead of the grooves 16a.

Next, a method of attaching the electric wire holder 10 according to the present embodiment to the EPB electric wire 20 will be described.
As shown in FIG. 3A, the EPB electric wire 20 is housed from the opening 14b to the back of the concave portion 14a of the holding portion 14, and a pressing force F is applied to the outer surface of the second flat portion 14i with a crimping tool. The holding portion 14 is crimped. As shown in FIG. 3B, by crimping the holding portion 14 with a crimping tool, the space of the concave portion 14a is reduced in diameter, and the frontage of the opening 14b of the holding portion 14 is set to the EPB electric wire 20. Narrow it to a size that makes it impossible to escape. At that time, as shown in FIG. 3B, the serration 16 on the inner surface of the second flat portion 14i of the holding portion 14 is pressed by the insulating coating material 26 on the outer side of the EPB electric wire 20, and the convex portion 16b of the serration 16 is pressed. Firmly bites into the outer insulating coating material 26. In the serration 16, the convex portion 16b having the edge portion 16c that bites into the outer insulating coating material 26 may reach the intervening insulating material 28 interposed inside, but may reach the insulating coating material 24 of the core wire 22. It has the shape and dimensions of the groove 16a that cannot be achieved.

Next, the action / effect will be described.
In the electric wire holder 10 according to the first embodiment of the present invention, since serrations 16 are formed on the inner surface of the concave portion 14a of the holding portion 14 corresponding to the region to be crimped by the crimping tool, the crimping tool The pressing force F applied by the above can be applied directly to the outer surface portion of the holding portion 14 having the serrations 16. As a result, the convex portion 16b on the inner surface of the holding portion formed by the serrations 16 can be made to bite into the insulating coating material 26 on the outer side of the EPB electric wire 20, and the EPB electric wire 20 can be reliably held without lateral displacement in the length direction. it can.

In addition, since the tubular rubber member that has been used in the past is no longer required, the number of parts can be reduced as compared with the conventional case, and the cost of parts can be reduced. Further, the electric wire holder 10 according to the embodiment of the present invention does not need to advance the EPB electric wire 20 to the tubular rubber member, which has been conventionally performed, and the conventional positioning operation of the tubular rubber member can be performed. Since it is not necessary to do so, the work of attaching to the EPB electric wire 20 can be easily performed. Therefore, the electric wire holder 10 according to the embodiment of the present invention can reliably hold the EPB electric wire 20 with a small number of parts, and can be easily attached to the EPB electric wire 20.

Further, as described above, the serration 16 of the electric wire holder 10 according to the embodiment of the present invention includes a plurality of grooves 16a parallel to the direction Y orthogonal to the width direction X of the holding portion 14. With this configuration, a plurality of grooves 16a parallel to the direction Y orthogonal to the width direction of the holding portion 14, that is, the direction orthogonal to the length direction of the held EPB electric wire 20, and the convex portion 16b between the grooves are formed. Therefore, it is possible to effectively prevent lateral displacement of the EPB electric wire 20 in the length direction.

(Second Embodiment)
Next, the electric wire holder according to the second embodiment of the present invention will be described.
The electric wire holder according to the second embodiment has the same configuration as the electric wire holder 10 according to the first embodiment, except for the configuration of the serration 16, so that the same configuration is used. The explanation is omitted.

5 (a) is a developed view of the holding portion 14, and FIG. 5 (b) is a sectional view taken along line VV of FIG. 5 (a). As shown in FIG. 5, the serration 17 according to the present embodiment includes grooves 17a formed in a grid pattern. The grid-like grooves 17a are formed on the inner surface of the second flat portion 14i of the holding portion 14 over almost the entire width thereof. The number of grooves 17a, the spacing between the grooves, the length, width, depth, etc. of each groove 17a can be arbitrarily set according to the holding force required for the EPB electric wire 20. As shown in FIG. 5B, a convex portion 17b is formed between the groove 17a and the groove 17a, and an angular edge portion 17c is formed in a grid pattern on the upper end edge of the convex portion 17b. ..

As shown in FIG. 3, when the EPB electric wire 20 is housed from the opening 14b to the back of the concave portion 14a of the holding portion 14 and the holding portion 14 is crimped with a crimping tool, the second flat portion 14i of the holding portion 14 The convex portion 17b having the grid-like edge portion 17c of the serration 17 formed on the inner surface of the EPB electric wire 20 bites into the insulating coating material 26 on the outer side of the EPB electric wire 20 so that the EPB electric wire 20 can be firmly held. It has become.

As described above, since the serration 17 of the electric wire holder according to the second embodiment has a configuration including the grooves 17a formed in a grid pattern, the EPB electric wire 20 is laterally displaced in the length direction. Not only that, the rotation of the EPB electric wire 20 around the axis in the length direction can be effectively prevented.

(Third Embodiment)
Next, the electric wire holder according to the third embodiment of the present invention will be described.
The electric wire holder according to the third embodiment has the same configuration as the electric wire holder 10 according to the first embodiment, except for the configuration of the serration 18, so that the same configuration is used. The explanation is omitted.

6 (a) is a developed view of the holding portion 14, FIG. 6 (b) is a sectional view taken along line VI-VI of FIG. 6 (a), and FIG. 6 (c) is a sectional view taken along line VII-VII. As shown in FIG. 6, the serration 18 according to the present embodiment includes a plurality of triangular hole portions 18a and protrusions 18b standing on one side edge portion of each hole portion 18a. A plurality of triangular hole portions 18a are formed on the inner surface of the second flat portion 14i over substantially the entire width thereof. The number of holes 18a, the spacing between the holes, the size of each hole 18a, the arrangement, and the like are appropriately set according to the holding force required for the EPB electric wire 20.

As shown in FIGS. 6 (a) and 6 (b), the triangular hole 18a and the protrusion 18b penetrate into the inner surface of the holding portion 14 corresponding to the two sides of the triangle which is the hole 18a. It is formed by making a notch and erecting a triangular piece on the other side. Therefore, the hole portion 18a is a through hole as shown in FIG. 6 (c). It is arbitrary on which side of the triangular hole 18a the protrusion 18b is formed, but the protrusions 18b are arranged in a specific direction according to the holding force required for the EPB electric wire 20. It may be arranged randomly.

As shown in FIG. 3, when the EPB electric wire 20 is housed from the opening 14b to the back of the concave portion 14a of the holding portion 14 and the holding portion 14 is crimped with a crimping tool, the second flat portion 14i of the holding portion 14 The projection 18b of the serration 18 formed on the inner surface of the EPB wire 20 bites into the insulating coating material 26 on the outside of the EPB wire 20 so that the EPB wire 20 can be firmly held.

As described above, the serration 18 of the electric wire holder according to the third embodiment includes a plurality of triangular holes 18a and protrusions 18b standing on one side edge of each hole 18a. It has become. Therefore, since the triangularly pointed protrusion 18b can be firmly bitten into the insulating coating material 26 on the outer side of the EPB electric wire 20, the EPB electric wire 20 can be stably provided without causing lateral displacement or rotation. Can be retained.

Further, as shown in FIG. 2, the wire harness 1 according to the embodiment of the present invention includes the EPB electric wire 20 allocated to the EPB and the electric wire holder according to any one of the above, and is for EPB. The electric wire 20 is held by the electric wire holder.

As described above, the present invention has the effect that the EPB electric wire can be reliably held with a small number of parts and that the work of attaching to the EPB electric wire is easy. It is useful for all wire harnesses.

1 Wire harness 10 Wire holder 12 Fixing part 14 Holding part 14a Concave part 14b Opening part 16 Serration (first embodiment)
16a groove 17 serrations (second embodiment)
17a groove 18 serrations (third embodiment)
18a Hole 18b Protrusion 20 Electric wire 30 Support panel (support)

Claims (5)

It is provided with a fixing portion fixed to the vehicle body and a holding portion extending from the fixing portion and holding an electric wire.
The holding portion has an opening for receiving the electric wire and a concave portion for accommodating the electric wire through the opening, and the concave portion has serrations formed on an inner surface corresponding to a region to be crimped. Wire holder. The electric wire holder according to claim 1, wherein the serration includes a plurality of grooves parallel to a direction orthogonal to the width direction of the holding portion. The electric wire holder according to claim 1, wherein the serration includes grooves formed in a grid pattern. The electric wire holder according to claim 1, wherein the serration includes a plurality of triangular holes and a protrusion standing on one side edge of each hole. A wire harness comprising an electric wire and the electric wire holder according to any one of claims 1 to 4, wherein the electric wire is held by the electric wire holder.

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