JP2012038567A - Wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring harness in which a plurality of wires included in the wiring harness are arranged in a fixed positional relationship, while preventing the positional deviation of a braided wire from the wires.SOLUTION: A wiring harness 1 has a structure in which a plurality of flat cables 2 are respectively arranged in grooves 36 formed on a wire holder 3, with a braided wire 4 and a net-like outer package 5 covering the periphery. The plurality of flat cables 2 can be arranged in a fixed positional relationship by the wire holder 3. Pins 31 are arranged to protrude from the wire holder 3. The pins 31 penetrate through the braided wire 4 and the net-like outer package 5. Consequently, positional deviation of the braided wire 4 and the net-like outer package 5 from the flat cables 2 can be prevented.

Description

  The present invention relates to a wire harness.

  Conventionally, in order to prevent noise from being transmitted to a wire harness connected to an electrical component mounted on an automobile, a technique in which a braided wire covers the periphery of an electric wire constituting the wire harness is known.

  For example, Patent Literature 1 discloses a technique in which a tubular braided wire that is shorter and thicker than a plurality of electric wires covers the periphery of the plurality of electric wires. Since the plurality of electric wires are bundled together by attaching the shape retaining member to the outside of the braided wire, the plurality of electric wires covered with the braided wire are held in a cylindrical shape.

JP 2003-115223 A

  However, in the technique disclosed in Patent Document 1, since the shape retaining member binds the entire plurality of wires covered with the braided wire, the plurality of wires are stacked, for example, in the vertical direction according to the installation space of the wire harness. They cannot be arranged in a certain positional relationship, such as being stacked and arranged side by side in the horizontal direction.

  Further, the braided wire is slippery with respect to the electric wire, and the position of the braided wire is likely to shift in the axial direction of the electric wire and the arrangement direction of the plurality of electric wires. For this reason, the braided wire covering the periphery of the electric wire is loosened, and the heat generated in the electric wire is not efficiently transmitted to the braided wire.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a wire harness capable of arranging a plurality of electric wires in a certain positional relationship and suppressing a displacement of a braided wire with respect to the electric wires.

  In order to solve the above-mentioned problem, the invention of claim 1 is provided with a plurality of electric wires, a plurality of grooves into which the electric wires are fitted, and a fixing portion fixed to a support, and the plurality of electric wires are arranged at a fixed position. A wire harness comprising a wire holding tool held in a relationship, a wire protection member having a knitted structure covering the periphery of the wire held by the wire holding tool, and a surface forming an outer edge of the wire holding tool And a pin projectingly provided and piercing the wire protection member.

  A second aspect of the invention is the wire harness according to the first aspect, wherein the pin is formed with a barb for preventing the pin from coming off from the wire protection member.

  Invention of Claim 3 is the wire harness of Claim 1 or 2, Comprising: The said fixing | fixed part is provided with respect to the said electric wire holder so that removal is possible.

  Invention of Claim 4 is a wire harness in any one of Claim 1 thru | or 3, Comprising: By elastically energizing the said electric wire inserted in the surface inside the said groove part, the said electric wire is made into the said groove part. A protrusion is provided to press against the inner surface, and the protrusion is provided on a side surface of the groove.

  Invention of Claim 5 is a wire harness in any one of Claim 1 thru | or 3, Comprising: By elastically energizing the said electric wire inserted in the surface inside the said groove part, the said electric wire is made into the said groove part. A protrusion is provided to press against the inner surface, and the protrusion is provided on the bottom surface of the groove.

  A sixth aspect of the present invention is the wire harness according to the fourth or fifth aspect, wherein a space in which the protrusion can be retracted is provided on an inner surface of the groove.

  According to invention of Claim 1, since a some electric wire can be hold | maintained in a fixed positional relationship with an electric wire holder, a some electric wire can be arrange | positioned flexibly according to the installation space of a wire harness. Moreover, the position shift of the electric wire protection member with respect to a some electric wire can be suppressed because the pin protrudingly provided by the electric wire holder pierces the electric wire protection member.

  According to invention of Claim 2, since the barb is formed in the pin, it can suppress that a pin falls out from an electric wire protection member.

  According to the invention of claim 3, since the fixing portion is removable, it can be removed when the electric wire holder does not need to be fixed.

  According to the invention of claim 4, the protrusion is provided on the side surface of the groove, and the electric wire is pressed against the inner surface of the groove by the protrusion. For this reason, even if it is an electric wire which is not closely_contact | adhered to a groove part, it is hold | maintained in a groove part.

  According to invention of Claim 5, the projection part is provided in the bottom face of the groove part, and an electric wire is pressed by the surface inside a groove part by a projection part. For this reason, even if it is an electric wire which is not closely_contact | adhered to a groove part, it is hold | maintained in a groove part.

  According to the sixth aspect of the present invention, the space in which the protrusion can be retracted is provided on the inner surface of the groove. For this reason, even if the electric wire held in close contact with the groove is fitted into the groove having the protrusion, the electric wire is held in the groove provided with the protrusion without being hindered by the presence of the protrusion.

It is a top view of the principal part of the wire harness 1 which concerns on the 1st Embodiment of this invention. 2 is a cross-sectional view of a main part of the wire harness 1. FIG. It is a perspective view of the electric wire holder 3 which concerns on the 1st Embodiment of this invention. 3 is a top view of the electric wire holder 3. FIG. 3 is a bottom view of the electric wire holder 3. FIG. It is sectional drawing of the principal part of the wire harness 1b which concerns on the 2nd Embodiment of this invention. It is a perspective view of the electric wire holder 3b which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the principal part of the wire harness 1c which concerns on the 3rd Embodiment of this invention. It is a perspective view of the electric wire holder 3c which concerns on the 3rd Embodiment of this invention. It is a perspective view of the electric wire holder 3d which concerns on the modification of this invention.

<First Embodiment>
As shown in FIGS. 1 and 2, the wire harness 1 includes a plurality of flat cables 2 (three in the present embodiment), a braided wire 4 and a net-like exterior material 5 that are electric wire protection members, and a plurality of flats. It is comprised by the electric wire holder 3 in which the cable 2 is engage | inserted.

  The plurality of flat cables 2 are connected to the connector 8 at both terminals. The connector 8 of such a wire harness 1 terminal and the mating connector attached to the member to which the wire harness 1 is connected are connected.

  The flat cable 2 includes a conductor 21 composed of a plurality of strands and a covering portion 22 composed of an insulator such as resin. The flat cable 2 shown in FIG. 2 has a structure in which three conductors 21 arranged in parallel along the surface of the support 40 are covered with a covering portion 22. However, the number and arrangement form of the flat cables 2 are not limited to the example shown in FIG.

  The braided wire 4 is a conductor having a structure in which a linear metal bundle in which fine metal wires such as tin-plated copper wires are twisted is knitted. Since the braided wire 4 has a knitted structure, it has elasticity. The braided wire 4 is an example of an electric wire protection member having a knitted structure in the present invention.

  The net-shaped exterior member 5 is a resin-made electric wire protection member having excellent wear resistance. Since the net-like exterior material 5 has a knitted structure, it has elasticity. The net-shaped exterior member 5 is an example of a wire protection member having a knitted structure in the present invention.

  The electric wire holder 3 is demonstrated using FIG. 2 thru | or FIG. The electric wire holder 3 according to the present embodiment is made of resin or the like, and the electric wire holder 3 has a plurality of groove portions 36 arranged in parallel at predetermined intervals along the surface of the support body 40. Yes. The plurality of flat cables 2 are held in the electric wire holder 3 by being fitted into the groove portions 36. In the example shown in FIGS. 2 to 4, the wire holder 3 is provided with three groove portions 36, but the groove portions 36 are provided in a number corresponding to the number of flat cables 2 to be held.

  An inlet portion 35 in the groove portion 36 is provided above the groove portion 36. The inlet part 35 functions as an introduction path when the flat cable 2 is fitted into the groove part 36. The dimensions of the inlet portion 35 in the arrangement direction of the plurality of flat cables 2 (hereinafter sometimes simply referred to as “array direction”) are based on the width (length in the arrangement direction) of the flat cable 2 fitted in the groove portion 36. Is also shorter. For this reason, when the flat cable 2 is fitted into the electric wire holder 3, the flat cable 2 is fitted into the groove 36 while being bent in the width direction at the entrance 35. The flat cable 2 fitted in the groove portion 36 is held in a state of being in close contact with the groove portion 36. Therefore, once the flat cable 2 is fitted into the groove portion 36, the flat cable 2 is not easily detached toward the inlet portion 35 side.

  In the electric wire holder 3, a partition wall 37 that forms a wall that separates them is provided between two adjacent groove portions 36. A pin 31 protrudes from a surface 371 (hereinafter sometimes simply referred to as “upper surface 371”) at the tip of the partition wall 37. Two pins 31 are provided at regular intervals along the axial direction of the flat cable 2 held by the electric wire holder 3 (hereinafter sometimes simply referred to as “axial direction”). Yes.

  Side walls 38 are provided at both ends of the wire holder 3 in the arrangement direction. Further, the pin 31 protrudes also on the outer side surface 381 (hereinafter sometimes simply referred to as “side surface 381”) in the side wall portion 38. The pin 31 provided on the side surface 381 is also provided with two pins at regular intervals along the axial direction. That is, the electric wire holder 3 shown in FIG. 2 is provided with eight pins 31 in total. Thus, the pin 31 protrudes on the surface forming the outer edge of the electric wire holder 3.

  A barb 315 is provided at the tip of the pin 31. The barb 315 is a portion that protrudes obliquely from the shaft portion 318 of the pin 31 toward the root side (see FIG. 1).

  As shown in FIG. 3 or 5, a fixing protrusion 33, which is an example of a fixing portion, is provided on the lower surface of the electric wire holder 3. Due to the presence of the fixing protrusions 33, the electric wire holder 3 can be directly fitted to the support body 40 on which the wire harness 1 such as a vehicle body is disposed. The fixing protrusion 33 is provided so as to be removable from the electric wire holder 3. Therefore, when it is not necessary to fix the electric wire holder 3 to the support body 40, the fixing protrusion 33 can be detached from the electric wire holder 3.

  The wire harness 1 according to the present embodiment will be described.

  The plurality of flat cables 2 are fitted into the plurality of grooves 36 provided in the wire holder 3, respectively. For this reason, according to arrangement | positioning of the groove part 36 provided in the electric wire holder 3, the flat cable 2 is arrange | positioned by the fixed positional relationship, respectively. Further, the braided wire 4 collectively covers the electric wire holder 3 that holds the plurality of flat cables 2 in a certain positional relationship and the periphery of a part of the flat cable 2 that extends before and after the electric wire holder 3. And the net-like exterior material 5 covers the periphery of the braided wire 4.

  Since the braided wire 4 and the net-shaped exterior member 5 each have a knitted structure, the pins 31 provided on the electric wire holder 3 pierce into the knitting gap. The pin 31 has a length enough to penetrate both the braided wire 4 and the net-like exterior material 5. When the pin 31 penetrates, the positional deviation of the braided wire 4 and the net-shaped exterior member 5 can be suppressed with respect to the flat cable 2 in the axial direction or the arrangement direction. In addition, the pin 31 does not necessarily have to penetrate both the braided wire 4 and the net-like exterior material 5 which are electric wire protection members. The pin 31 may pass through only the braided wire 4 and only be stuck into the net-like exterior material 5.

A barb 315 is provided at the tip of these pins 31. For this reason, the braided wire 4 and the net-like exterior material 5 are caught on the return surface 317 in the barb 315.
That is, by forming the barb 315 on the pin 31, it is possible to prevent the pin 31 from coming off from the braided wire 4 and the net-like exterior material 5.

  In addition, the length from the root of the shaft portion 318 to the barb 315 in the pin 31 is set slightly shorter than the total thickness of the braided wire 4 and the net-like exterior material 5 in the natural state, so that the braided wire 4 and The net-like exterior material 5 can be brought into close contact with the flat cable 2.

  As described above, in the present embodiment, the flat cable 2 is covered with the braided wire 4 and the net-like exterior material 5 after being fitted into the electric wire holder 3. For this reason, according to arrangement | positioning of the groove part 36 provided in the electric wire holder 3, the some flat cable 2 can be arrange | positioned in a fixed positional relationship, respectively. That is, it becomes possible to arrange a plurality of flat cables 2 flexibly according to a space allowed for installing the wire harness 1. Further, a partition wall portion 37 is provided between the plurality of flat cables 2 fitted in the electric wire holder 3. Since the partition part 37 is comprised with resin etc. which were more excellent in heat conductivity than air, the heat which arises in the flat cable 2 is thermally radiated | emitted from the electric wire holder 3 efficiently. Therefore, the heat dissipation of the wire harness 1 is improved.

  Further, the electric wire holder 3 is provided with a pin 31 projecting through the braided wire 4 and the net-like exterior material 5 covering the periphery of the electric wire holder 3. For this reason, the position shift in the axial center direction and arrangement direction of the braided wire 4 and the net-shaped exterior member 5 with respect to the flat cable 2 is suppressed. Since the positional shift is suppressed in this way, the braided wire 4 and the net-like exterior material 5 cover the flat cable 2 without being loose. Therefore, the heat generated in the flat cable 2 is reliably transmitted to the braided wire 4 and the net-like exterior material 5, so that the heat dissipation of the wire harness 1 is improved.

  Further, since the bar 31 is provided with the barb 315, the braided wire 4 and the net-like exterior material 5 can be prevented from coming off the pin 31. Further, depending on the position of the return surface 317 provided on the barb 315, the braided wire 4 and the net-shaped exterior member 5 are in close contact with the flat cable 2. That is, since the braided wire 4 and the flat cable 2 approach each other, the capacitance of the wire harness 1 increases. When the capacitance of the wire harness 1 is increased, the voltage change of the flat cable 2 due to noise can be suppressed when noise is generated. That is, the shielding performance of the wire harness 1 is improved.

  Moreover, the space (gap) formed between the braided wire 4 and the net-shaped exterior member 5 and the flat cable 2 can be suppressed by the braided wire 4 and the net-shaped exterior member 5 being in close contact with the flat cable 2. Therefore, the heat generated in the flat cable 2 is reliably transmitted through the braided wire 4 and the net-like exterior material 5, so that the heat dissipation of the wire harness 1 is further improved.

<Second Embodiment>
Next, a wire harness 1b according to a second embodiment of the present invention will be described with reference to FIGS. Compared with the wire harness 1 shown in FIGS. 1-2, the wire harness 1b differs in the structure of the electric wire holder 3b. 6-7, the same component as the component shown by FIGS. 1-5 is attached | subjected with the same referential mark. Hereinafter, only the differences from the wire holder 3 in the wire holder 3b will be described.

  As shown in FIGS. 6 to 7, the side surface of the partition wall portion 37 and the inner side surface of the side wall portion 38 in the electric wire holder 3 b constitute the inner side surface of the groove portion 36, and a recess is formed on one side surface of the groove portion 36. 32b is provided. The protrusion 39b is formed with a predetermined thickness by extending obliquely downward from the upper surface of the recess 32b into the groove 36. That is, the protrusion 39 b is formed integrally with the partition wall 37 or the side wall 38.

  When the flat cable 2b having a width smaller than that of the flat cable 2 used in the first embodiment is fitted into the groove 36 in the present embodiment, it is integrated with the partition wall 37 or the side wall 38 formed of resin or the like. The formed protrusion 39b is pushed downward while coming into contact with the outer side surface of the flat cable 2b. Since the pushed protrusion 39b tries to return to the original position, the flat cable 2b is elastically biased by the protrusion 39b. That is, the flat cable 2b is pressed against the other side surface of the side surface of the groove portion 36 where the recess 32b is not provided. In the inlet portion 35 of the groove portion 36, the inner side surface constituting the groove portion 36 protrudes in the arrangement direction. Therefore, the dimension of the inlet portion 35 in the arrangement direction is the arrangement of the groove portions 36 in which the flat cable 2 is held in close contact. Less than the dimension in the direction. Therefore, even if the flat cable 2b pressed against the other side surface is about to come off above the groove portion 36, the flat cable 2b is located above the groove portion 36 because the side surface on the side of the inlet portion 35 protrudes. It will not come off. That is, the flat cable 2b is held in the groove portion 36 while being pressed against the side surface of the groove portion 36 by the protrusion 39b.

  Further, when the flat cable 2 used in the first embodiment is fitted into the groove 36 according to the present embodiment provided with the protrusion 39b, the flat cable 2 protrudes obliquely downward into the groove 36. The protrusion 39b is pushed into the recess 32b by the flat cable 2. Thus, since the protrusion 39b is retracted into the recess 32b, the flat cable 2 is held in close contact with the groove 36 without being obstructed by the protrusion 39b provided in the groove 36.

  As described above, in the second embodiment, the recess 32b is provided on one side surface of the groove 36, and the protrusion 39b is provided in the recess 32b. For this reason, when the flat cable 2b having a width smaller than that of the flat cable 2 is fitted into the groove portion 36, the flat cable 2b is elastically urged by the projection 39b and pressed against the other side surface. That is, even the flat cable 2 b having a width smaller than that of the groove portion 36 can be held in the groove portion 36. In addition, when the flat cable 2 held in close contact with the groove 36 in the first embodiment is fitted into the groove 36, the flat cable 2 pushes the protrusion 39b into the recess 32b, and the protrusion 39b into the recess 32b. Evacuate. Therefore, the flat cable 2 is held in close contact with the groove portion 36 without being obstructed by the protruding portion 39 b protruding toward the groove portion 36. In this way, by using the electric wire holder 3b, the flat cable 2b that is not in close contact with the flat cable 2 or the groove 36 and is smaller than the flat cable 2 is arranged and held in a fixed positional relationship. It is possible.

<Third Embodiment>
Next, a wire harness 1c according to a third embodiment of the present invention will be described with reference to FIGS. Compared with the wire harness 1 shown in FIG. 2 and the wire harness 1b shown in FIG. 6, the wire harness 1c has a different configuration of the electric wire holder 3c. 8 to 9, the same components as those shown in FIGS. 1 to 7 are denoted by the same reference numerals. Hereinafter, only the points different from the wire holder 3 in the wire holder 3c will be described.

  As shown in FIGS. 8 to 9, the bottom surface inside the bottom portion 50 c of the wire holder 3 c constitutes the bottom surface inside the groove portion 36, and the concave portion 32 c is provided on the bottom surface inside the groove portion 36. . And the protrusion part 39c is formed in predetermined thickness by extending diagonally upward toward the inside of the groove part 36 from the side surface of the recessed part 32c. That is, the protrusion 39c is formed integrally with the bottom 50c.

  When, for example, a flat cable 2c having a thickness smaller than that of the flat cable 2 is fitted in the groove 36, the protrusion 39c formed integrally with the bottom 50c made of resin or the like abuts on the outer bottom surface of the flat cable 2c. While pushed down. Since the pushed-in protrusion 39c tries to return to the original position, the flat cable 2c is elastically biased by the protrusion 39c. That is, the flat cable 2 c is pushed up above the groove 36. As described above, on the side of the inlet portion 35 of the groove portion 36, the inner side surface constituting the groove portion 36 protrudes in the arrangement direction. Therefore, the flat cable 2c pushed upward is held in a state of being in contact with the protruding portion of the side surface inside the groove 36. Thus, the flat cable 2c is held in the groove 36 in a state where it is pushed up by the protrusion 39c.

  Further, when the flat cable 2 used in the first embodiment is fitted into the groove 36 according to the present embodiment provided with the protrusion 39c, the flat cable 2 protrudes obliquely upward into the groove 36. The protrusion 39c is pushed into the recess 32c by the flat cable 2. Thus, since the protrusion 39c is retracted into the recess 32c, the flat cable 2 is held in close contact with the groove 36 without being obstructed by the protrusion 39c provided in the groove 36.

  As described above, in the third embodiment, the recess 32c is provided on the bottom surface 50c of the groove 36, and the protrusion 39c is provided in the recess 32c. Therefore, when the flat cable 2c having a thickness smaller than that of the flat cable 2 is fitted into the groove portion 36, the flat cable 2c is elastically biased by the projection 39c, and the side surface of the groove portion 36 on the side of the inlet portion 35 is pulled. It touches the protruding part. That is, even the flat cable 2 c having a thickness smaller than that of the groove portion 36 can be held in the groove portion 36. In addition, when the flat cable 2 held in close contact with the groove 36 in the first embodiment is fitted into the groove 36, the flat cable 2 pushes the protrusion 39c into the recess 32c, and the protrusion 39c is inserted into the recess 32c. Evacuate. Therefore, the flat cable 2 is held in close contact with the groove 36 without being obstructed by the protrusion 39c protruding toward the groove 36. In this way, by using the electric wire holder 3c, the flat cable 2c that is not in close contact with the flat cable 2 or the groove 36 and is smaller in thickness than the flat cable 2 is arranged and held in a fixed positional relationship. It is possible.

<Modification>
In addition, this invention is not limited to the said embodiment. In the said embodiment, although the electric wire holder 3 arranged the some flat cable 2 in parallel along the surface of the support body 40, it is not restricted to such a form. FIG. 10 shows an electric wire holder 3d on which the flat cable 2 is laminated. A pin 31 is provided around the wire holder 3d, and a fixing projection 33 is provided on the lower surface. Further, the groove portion 36 and the inlet portion 35 in the groove portion 36 are provided in a stacked manner. Thus, the electric wire holder 3 can be properly used depending on the installation space of the wire harness 1. Moreover, the protrusion part 39b or the protrusion part 39c may be provided in the surface inside the groove part 36 in the electric wire holder 3d.

  Moreover, in the said embodiment, although it was the structure where the projection part 39b or the projection part 39c was provided one each with respect to the groove part 36, it is not restricted to such a form. The groove 36 may include a plurality of protrusions 39b or protrusions 39c. At this time, the protrusion 39b is provided on both side surfaces constituting the groove 36. As a result, the force for elastically urging the flat cable 2b or the flat cable 2c is increased, and the flat cable 2b or the flat cable 2c is more strongly held in the groove 36. Further, both the protrusion 39b and the protrusion 39c may be provided in one groove 36. As a result, the force to be elastically biased is strengthened, and the types of the flat cable 2 that can be held in the groove 36 can be diversified.

  Moreover, in the said embodiment, although the braided wire 4 and the net-like exterior material 5 covered the circumference | surroundings of the flat cable 2 and the electric wire holder 3, it is not restricted to such a form. Only one of the braided wire 4 and the net-like exterior material 5 may be in a form that covers the periphery of the flat cable 2 and the wire holder 3.

  Moreover, in the said embodiment, although the flat cable 2 was used, about the electric wire used, another form may be sufficient.

DESCRIPTION OF SYMBOLS 1 Wire harness 2 Flat cable 3 Electric wire holder 4 Braided wire 5 Net-like exterior material 31 Pin 33 Fixing protrusion 36 Groove part 37 Partition part 38 Side wall part 40 Support body

Claims (6)

Multiple wires,
A wire harness comprising: a plurality of groove portions into which each of the electric wires are fitted and a fixing portion that is fixed to a support, and a wire holder that holds the plurality of electric wires in a fixed positional relationship,
An electric wire protection member having a knitted structure covering the periphery of the electric wire held by the electric wire holder;
A pin protruding from a surface forming an outer edge of the wire holder, and a pin piercing the wire protection member;
A wire harness comprising: The wire harness according to claim 1,
The pin is formed with a barb for preventing the pin from coming off from the wire protection member. The wire harness according to claim 1 or 2,
The said fixing | fixed part is provided with the said electric wire holder so that removal is possible, The wire harness characterized by the above-mentioned. The wire harness according to any one of claims 1 to 3,
A protrusion that presses the electric wire against the inner surface of the groove by elastically energizing the electric wire fitted in the inner surface of the groove;
The wire harness, wherein the protrusion is provided on an inner side surface of the groove. The wire harness according to any one of claims 1 to 3,
A protrusion that presses the electric wire against the inner surface of the groove by elastically energizing the electric wire fitted in the inner surface of the groove;
The wire harness, wherein the protrusion is provided on an inner bottom surface of the groove. The wire harness according to claim 4 or 5,
A wire harness characterized in that a space in which the protrusion can be retracted is provided on the inner surface of the groove.

Images