JP6467378B2 - Wire harness - Google Patents

Description

  The present invention relates to a wire harness.

In a wire harness, an electric wire holding structure has been proposed in which an electric wire is normally held and an electric wire such as an interlock circuit can be cut when an abnormality occurs. In this type of electric wire holding structure, a gap is provided between the electric wires so that the electric wires do not come into contact with each other when being cut to cause a short circuit.
On the other hand, as a technique that can be applied to the electric wire holding structure, there is known a wiring structure of a wire harness in which the outer periphery of an electric wire bundle is molded with a sealing resin portion (electric wire embedded body) (see Patent Document 1 and the like). ).
The electric wire embedding body in the wiring structure of this wire harness can play a role of the electric wire holding structure for cutting the electric wire.

JP 2011-172412 A

  By the way, in the electric wire holding structure by the above-mentioned electric wire embedding body, a thin electric wire can be cut | disconnected comparatively easily by a shearing process (cut | disconnecting like scissors). On the other hand, it becomes difficult to cut a plurality of thin wires at the same time. For example, there may be a case where a plurality of electric wires that protrude from the electric wire embedded body at intervals are cut by other parts that operate in the vicinity. In such a case, since the electric wire is cut by the gap between the electric wire embedded body and the working part (shearing member), it may not be easy to cut like a normal scissor. In this case, the electric wire enters while being crushed in the gap between the electric wire embedded body and the operating part, and is difficult to cut, and there is a possibility that several strands are connected and remain. If such an uncut portion is generated in the wire harness for cutting at the time of abnormality, there is a disadvantage that the electrical equipment or the like cannot be immediately brought into a non-energized state at the time of abnormality.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wire harness that includes an electric wire embedded body that holds an electric wire and can easily cut an electric wire held by the electric wire embedded body. There is.

The above object of the present invention is achieved by the following configuration.
(1) An electric wire embedded body in which at least one of a seat surface and a pair of side surfaces adjacent to the seat surface is a flat electric wire penetrating side surface made of a resin material, and one of the electric wire embedded bodies in a direction along the seat surface An electric wire that penetrates from the side surface to the other side surface and inclines in a direction away from the seat surface as the wire protruding angle at the flat electric wire penetrating side surface protrudes with respect to a direction perpendicular to the electric wire penetrating side surface. The wire embedded body has a trapezoidal shape when viewed from a direction perpendicular to the flat wire-penetrating side surface, and a flat surface on the bottom side of the trapezoidal shape is the seating surface. Wire harness.

According to the wire harness having the above configuration (1), the wire protruding from the flat electric wire penetrating side is easily sheared by moving the shear member along the flat electric wire penetrating side by forming a shear angle. Can be sheared. Moreover, when there are a plurality of electric wires, each electric wire is held in the electric wire embedded body even after shearing, so that adjacent electric wires do not come into contact with each other to cause a short circuit. Further, at the time of manufacture, since the electric wire is inclined and set in the forming die, only an angle is generated in the electric wire penetration shape of the electric wire embedded body, so that there is no influence on the ease of making.
Further, the reaction force generated when the electric wire is cut can be stably supported by the flat seating surface of the electric wire embedded body. Thereby, a shearing force can be applied to the electric wire at the time of cutting the electric wire, and the electric wire is hardly left uncut.

(2) The wire harness having the configuration of (1) above, wherein the plurality of electric wires are arranged in parallel with a gap in a direction along the seating surface.

  According to the wire harness having the configuration of (2) above, when a plurality of electric wires are cut, adjacent electric wires are separated with a gap, so that the electric wires come into contact with each other and are less likely to cause a short circuit. .

(3) In the wire harness configured as described in (2) above, the plurality of electric wires protruding from the flat electric wire penetrating side surface are arranged in a zigzag pattern alternately approaching the seating surface in the arrangement direction. A wire harness characterized by.

  According to the wire harness having the configuration (3), the number of electric wires that touch the shearing member at a time is halved, so that the electric wires can be easily cut. In addition, the cut electric wire must not be short-circuited with the adjacent electric wires, but because it is displaced not only in the arrangement direction but also in the height direction, the distance from the adjacent electric wires is further secured, and the electric wires are more difficult to short-circuit. Become. Moreover, since it becomes difficult to short-circuit between electric wires, it becomes possible to make the gap | interval of an electric wire small and to suppress the distance of the electric wire arrangement | positioning direction of an electric wire embedding body.

  According to the wire harness according to the present invention, it is possible to easily cut the electric wire held by the electric wire embedded body while including the electric wire embedded body that holds the electric wire.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

It is a disassembled perspective view showing the wire harness which concerns on one Embodiment of this invention. It is a principal part perspective view of the wire harness by which the electric wire embedding body was provided in the electric wire group. It is a principal part perspective view of the wire harness which concerns on the modification by which the electric wire embedding body was provided in the electric wire group which arranged the electric wire in zigzag. It is a perspective view of a low-pressure injection molding machine. It is a principal part top view of the wire harness by which the electric wire embedding body was provided in the electric wire group. It is operation | movement explanatory drawing which looked at the cutting process of the electric wire in the AA cross section of FIG. It is operation | movement explanatory drawing showing the cutting process of the electric wire group which arranged the electric wire in zigzag.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is an exploded perspective view showing a wire harness according to an embodiment of the present invention.
As shown in FIG. 1, the wire harness 100 according to the present embodiment includes an electric wire embedded body 13 and an electric wire 11. The electric wire embedded body 13 is a main member constituting the electric wire holding structure. Further, the electric wire 11 in the wire harness 100 will be described by exemplifying the electric wire group 15. In the electric wire group 15, a plurality of electric wires 11 are arranged in at least one line in the diameter direction. “At least one row” means that a plurality of rows may be arranged in multiple stages. However, in this case, the electric wire groups at each stage are arranged apart from each other.

  In the wire harness 100 of the present embodiment, the electric wire embedded body 13 is formed in an intermediate portion and routed in the vehicle. The outer peripheral shape part 25 of the electric wire embedded body 13 has a trapezoidal shape in a front view, and the cross-sectional shape at an arbitrary position in the extending direction of the electric wire group 15 is formed identically. Of course, it goes without saying that the outer peripheral shape portion of the electric wire embedded body 13 is not limited to this and can take various shapes.

  The connector 27 connected to one end of the wire group 15 is connected to, for example, an interlock circuit of an electronic device (not shown).

FIG. 2 is a perspective view of a main part of the wire harness 100 in which the electric wire group 13 is provided in the electric wire group 15.
The electric wire embedded body 13 is made of a resin material. As the resin material, a hard resin material can be suitably used. The electric wire embedded body 13 surrounds a part of the extending direction of the electric wire group 15 and is integrally molded. In other words, the wire harness 100 is such that a part of the wire group 15 in the extending direction is embedded (insert molding) in the wire embedded body 13.

  The adjacent electric wires 11 may be slightly separated or in contact with each other. If they are slightly separated from each other, when the plurality of electric wires 11 are cut, the electric wires 11 come into contact with each other, and a short circuit can be further prevented. In the present embodiment, in the wire harness 100, the adjacent electric wires 11 are slightly separated with a gap.

  The wire embedding body 13 of the present embodiment has a trapezoidal outer peripheral shape portion 25. Therefore, if the electric wire embedding body 13 is cut along a plane orthogonal to the extending direction of the electric wire group 15, it has a trapezoidal cross section. In the electric wire embedding body 13, the bottom surface of the trapezoidal cross section is a seating surface 29. In the present embodiment, the seating surface 29 is formed as a flat surface. Of course, it goes without saying that the outer peripheral shape portion of the wire-embedded body is not limited to a trapezoidal shape but can take various shapes such as a rectangular shape.

  A pair of at least one side surface which opposes the seating surface 29 of the electric wire embedding body 13 becomes the flat electric wire penetration side surface 31a. The electric wire group 15 penetrates the electric wire embedded body 13 from one electric wire penetration side surface 31a toward the other electric wire penetration side surface 31b.

  In the electric wire embedded body 13, in the electric wire group 15, a plurality of electric wires 11 are arranged in parallel with a gap in a direction along the seating surface 29. The electric wire group 15 is inclined in a direction away from the seat surface 29 as the electric wire protruding angle of each electric wire 11 on the flat electric wire penetrating side surface 31a protrudes with respect to the direction perpendicular to the electric wire penetrating side surface 31a. Therefore, the electric wire group 15 is inclined in a direction approaching the seating surface 29 as it protrudes on the opposite electric wire penetrating side surface 31b.

  In the vicinity of the electric wire embedded body 13 of the wire harness 100 described above, an operating part 33 (see FIG. 6) which is a shearing member is provided. The operating part 33 can be moved along the electric wire penetration side surface 31a outside the electric wire embedded body 13 when the vehicle is abnormal. In this embodiment, the operation part 33 moves along the electric wire penetration side surface 31a in a direction approaching the seat surface 29 from the opposite side to the seat surface 29 of the electric wire embedded body 13. In this electric wire penetration side surface 31a, it inclines in the direction away from the seat surface 29 as the electric wire group 15 protrudes. The moving part 33 moves along the flat surface of the electric wire penetration side surface 31a, thereby cutting the electric wire group 15 protruding from the electric wire penetration side surface 31a by shearing.

FIG. 3 is a perspective view of a main part of a wire harness 100A according to a modification in which an electric wire embedded body 13A that is an electric wire embedded body is provided in an electric wire group 15A in which electric wires 11 are arranged in a staggered manner.
As a modification of the wire harness 100, the electric wires 11 can be arranged in a staggered manner on the electric wire penetration side surfaces 31 a and 31 b of the electric wire embedded body 13. In the wire harness 100A according to the modified example in which the electric wires 11 are arranged in a staggered manner, the plurality of electric wires 11 respectively protruding from the flat electric wire penetration side surfaces 31a and 31b of the electric wire embedded body 13A approach the seating surface 29 alternately in the arrangement direction. To do.

FIG. 4 is a perspective view of the low pressure injection molding machine 35.
In the present embodiment, a low-pressure injection molding machine 35 is used for molding the electric wire embedded body 13. The low-pressure injection molding machine 35 can integrally mold the electric wire embedded body 13 at an intermediate position of the electric wire group 15. In addition, of course, a normal injection molding machine may be used for forming the electric wire embedded body 13 in the wire harness according to the present embodiment. The low-pressure injection molding machine 35 is a molding machine that can be operated by one worker without external power such as an electric motor. The low-pressure injection molding machine 35 includes a molding die 37, a mold clamping device (not shown), and a low-pressure injection device 39 that injects molten resin into the molding die 37 under pressure.

  The low pressure injection device 39 includes a heating cylinder 41 provided with a heater for heating and melting synthetic resin and the like, a plunger 43 for injecting molten resin in the heating cylinder from a nozzle (not shown), and an injection cylinder 45 for moving the plunger 43 forward. And a handle 47 for driving the injection cylinder 45 and a temperature controller 49 for maintaining the heating temperature of the heating cylinder 41 at a desired temperature, and these are supported by a device column 53 standing on a pedestal 51. Yes.

  The low-pressure injection molding machine 35 in the present embodiment has a maximum amount of resin that can be molded by one injection molding of about 10 g, and when a mold is clamped, an air cylinder, a link, or the like This can be done manually using. Of course, the low-pressure injection device 39 may drive the injection cylinder 45 by external power such as an electric motor or air. More specifically, as the low-pressure injection molding machine 35, for example, the well-known “injection molding apparatus” disclosed in JP2010-260297A, JP2012-30429A, JP2013-103492A, and the like. Can be used.

  The mold 37 according to this embodiment is disposed on the pedestal 51. In the molding die 37, the upper die 55 and the lower die 57 sandwich the electric wire embedded body 13 by sandwiching the electric wire group 15 with burr holes 59 formed at both outer end portions along the extending direction of the electric wire group 15. A moldable space (cavity 61) is defined.

  That is, the upper mold 55 and the lower mold 57 have an upper mold dividing surface 63 and a lower mold dividing surface 65. An upper harness housing part 67 and a lower harness housing part 69 are provided on the upper mold parting surface 63 and the lower mold parting surface 65. When the upper die 55 and the lower die 57 are clamped, the molding die 37 defines a hollow cavity 61 inside. The upper harness housing portion 67 includes an upper portion of the cavity 61 and a burr hole 59. The lower harness housing portion 69 includes a lower portion of the cavity 61 and a burr hole 59. The burrs 59 sandwich the outer periphery of the row of wire groups 15 at both ends of the cavity 61 along the extending direction of the row of wire groups 15. In the present embodiment, the burr hole 59 is formed with a flat surface between which the wire group 15 is sandwiched.

  The burrs 59 in the lower mold 57 have a pair of concave portions 71 a and 71 b that can accommodate the row of electric wire groups 15. The pair of concave portions 71 a and 71 b have different depths from the lower mold dividing surface 65. One of the pair of burrs 59 in the upper mold 55 (on the right side in the figure) is formed in a flat plate shape on the same surface as the upper mold dividing surface 63. The other (left side in the figure) burr hole 59 in the upper mold 55 is formed in a flat plate shape that hangs down from the upper mold dividing surface 63.

  The molding die 37 clamps the upper die 55 and the lower die 57 in a state where the row of the wire group 15 is accommodated in the concave portions 71 a and 71 b of the burr hole 59 in the lower die 57. In the molding die 37 in which the concave portions 71a and 71b are provided only in the lower die 57, the electric wire group 15 is easily arranged in the lower harness housing portion 69, and the electric wire is less likely to be caught when the die is clamped.

  The electric wire group 15 is sandwiched between the upper die 55 and the lower die 57 at two locations in the extending direction. The two pairs of burrs 59 sandwiching the wire group 15 are different in height from the pedestal 51 at two locations in the extending direction of the wire group 15 (the right side in the figure is high and the left side in the figure is low). The electric wire group 15 is formed to be inclined with respect to the seating surface 29 of the electric wire embedded body 13.

Next, the operation of the above configuration will be described.
FIG. 5 is a plan view of the main part of the wire harness 100 in which the wire embedded body 13 is provided in the wire group 15, and FIG. 6 is an operation explanatory view of the cutting process of the wire 11 as seen in the AA cross section of FIG.
The wire harness 100 according to the present embodiment is routed in the vehicle together with the electric wire embedded body 13 and the connector 27. An operating part 33 is disposed in the vicinity of the electric wire embedded body 13. The operating part 33 moves toward the seating surface 29 from the side opposite to the seating surface 29 along the wire penetration side surface 31a of the wire embedding body 13 when the vehicle is abnormal. The electric wire group 15 protruding from the electric wire penetrating side surface 31a to which the operating part 33 moves is inclined in a direction away from the seat surface 29 as it protrudes.

  Therefore, as shown in FIGS. 6A and 6B, the wire harness 100 according to this embodiment has a shear angle on the electric wire 11 protruding from the flat electric wire penetrating side surface 31a. Thereby, the wire harness 100 can shear the electric wire 11 now easily only by moving the operation | working part 33 along the flat electric wire penetration side surface 31a.

  Further, when there are a plurality of electric wires 11 (that is, in the case of the electric wire group 15 of the present embodiment), since the electric wires 11 are held by the electric wire embedded body 13 even after shearing, adjacent electric wires 11 are in contact with each other. There is no short circuit. Furthermore, since the wire harness 100 only has an angle in the wire penetration shape of the wire embedding body 13 by inclining and setting the wire 11 to the forming die 37 at the time of manufacture, it does not affect the ease of manufacturing.

  Further, in the wire harness 100 according to the present embodiment, when the plurality of electric wires 11 are cut, in the electric wire group 15, the adjacent electric wires 11 are slightly separated with a gap, so that the electric wires 11 are separated from each other. It is less likely to cause a short circuit due to contact.

  In the wire harness 100A according to the modification shown in FIGS. 7A and 7B, since the electric wires 11 are staggered on the electric wire penetration side surfaces 31a and 31b, the electric wire group 15A substantially moves the operating part 33. There are two levels along the direction. As a result, in the wire harness 100A, the number of the electric wires 11 that touch the operating part 33 at a time is halved. Thereby, 100 A of wire harnesses come to cut | disconnect the electric wire 11 more easily.

Further, in the wire harness 100A, since the cut electric wires 11 are displaced not only in the arrangement direction but also in the height direction, a distance from the adjacent electric wires 11 is further secured, and the electric wires 11 are less likely to be short-circuited.
Furthermore, the wire harness 100 </ b> A can reduce the gap in the arrangement direction of the wires 11 because the wires 11 are less likely to be short-circuited. Thereby, 100 A of wire harnesses can also suppress the distance W of the electric wire embedding body 13A of the electric wire 11 arrangement direction.

  Furthermore, the wire harness 100 and the wire harness 100A of the present embodiment described above can stably support the reaction force generated when the electric wire is cut by the flat seating surface 29 of the electric wire embedded bodies 13 and 13A. Thereby, the wire harness 100 and the wire harness 100A can apply a shearing force to the electric wire 11 reliably at the time of cutting the electric wire, and can hardly cause the electric wire 11 to remain uncut.

In the above embodiment, the case where the shearing member is the working part 33 has been described as an example. However, in the configuration of the present invention, the shearing member is not limited to the working part. As long as the shearing member can move from above along a flat electric wire penetrating side, such as a flat punch or a single blade, the same effect as described above can be obtained.
Moreover, although the electric wire embedding body of this invention demonstrated as a form provided only in order to make it easy to shear, it is set as the structure which served as the damming part for not only the said embodiment but water stop. In addition, a part of various products such as a clamp and an electric wire protection member in which the electric wire is integrally molded can be configured.

  Therefore, according to the wire harness 100, 100A according to the present embodiment, the electric wire embedded body 13, 13A for holding the electric wire 11 is provided, and the electric wire 11 held by the electric wire embedded body 13, 13A is easily cut. Can do.

Here, the characteristics of the embodiment of the wire harness according to the present invention described above will be briefly summarized below.
[1] An electric wire embedded body (13, 13A) made of a resin material and having at least one of a seating surface (29) and a pair of side surfaces (31a, 31b) adjacent to the seating surface as a flat electric wire penetrating side surface (31a) When,
In the direction along the seat surface, the wire projecting angle at the flat wire-penetrating side surface (31a) penetrates from the one side surface (31a) of the wire-embedded body to the other side surface (31b). An electric wire (11) inclined in a direction away from the seating surface as it protrudes in a direction perpendicular to 31a);
A wire harness (100, 100A) comprising:
[2] A wire harness configured as described in [1] above,
The wire harness (100), wherein the plurality of electric wires are arranged in parallel with a gap in a direction along the seating surface.
[3] A wire harness configured as described in [2] above,
The wire harness (100A), wherein the plurality of electric wires protruding from the flat electric wire penetrating side surface are arranged in a staggered pattern alternately approaching the seating surface in the arrangement direction.
[4] A wire harness having any one of the above-mentioned [1] to [3],
The wire harness (100, 100A), wherein the seating surface (29) is a flat surface.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 11 ... Electric wire 13 ... Electric wire embedding body 29 ... Seat surface 31a, 31b ... Electric wire penetration side surface (side surface)
100 ... Wire harness

Claims (3)

An electric wire embedding body in which at least one of a seating surface and a pair of side surfaces adjacent to the seating surface is a flat electric wire penetrating side surface made of a resin material;
As the wire projecting angle from one side surface to the other side surface of the wire-embedded body in the direction along the seat surface protrudes with respect to the direction perpendicular to the wire-penetrating side surface. An electric wire inclined in a direction away from the seat surface;
With
The wire-embedded body has a trapezoidal shape when viewed from a direction perpendicular to the flat wire-penetrating side surface, and a flat surface on the bottom side of the trapezoidal shape serves as the seat surface. . The wire harness according to claim 1,
A plurality of said electric wires are arranged in parallel with a gap in a direction along said seating surface. The wire harness according to claim 2,
A wire harness, wherein the plurality of electric wires protruding from the flat electric wire penetrating side surface are arranged in a zigzag pattern alternately approaching the seating surface in the arrangement direction.

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