JP6059263B2 - Wire integrated clamp mark and wire harness - Google Patents

Description

  The present invention relates to an electric wire integrated clamp mark and a wire harness provided with the electric wire integrated clamp mark.

  Wire harnesses used in automobiles, etc., have one or a plurality of bundled wires attached to various fixtures (clips, latches, latches) on support parts such as frames and body panels of on-vehicle equipment. It is fixed by using a protective tube with a tool (for example, see Patent Documents 1, 2, and 3).

  As shown in FIG. 8, for example, a plurality of electric wires 501 are collected by a vinyl tape 503 and divided into trunk lines and branch lines, or connectors and terminals 509 are attached to the respective ends to form a wire harness 513. . Since the wire harness 513 is manufactured with a predetermined length in advance, the wire harness 513 may not be connected to the mating connector or the mating terminal unless it is attached to a predetermined position of the vehicle. Therefore, a clamp mark 515 may be attached to the wire harness 513 in order to facilitate attachment work to a predetermined position of the vehicle.

  As shown in FIGS. 9 and 10, the clamp mark 515 is a flexible sheet-like clamp mark material 519 having a plurality of parallel protrusions 517 on one side in the case of a winding type, for example. Protrusions 523 projecting outward in the radial direction of the winding shaft and forming flange portions 521 are provided at both ends in the extending direction of the respective protrusions 517. The clamp mark 515 is wound so as to surround the outer periphery of the wire harness 513 with the ridge 517 as the outside, and then the vinyl tape 503 is wound around the outer peripheral surface and fixed to a predetermined position of the wire harness 513 (FIG. 8). reference).

The clamp mark 515 attached to the wire harness 513 in this way is fixed to the vehicle body panel or the like by a P clamp 525 shown in FIG. The P clamp 525 is a clamp member in which the clamp main body portion 527 is formed of a band-shaped metal plate, and is formed in a substantially R shape in which a strip-shaped fixed piece portion 529 and a fastening piece portion 533 are respectively connected to both ends of the arc-shaped portion 531. It is. A cushioning material such as rubber is provided on the inner peripheral side of the arc-shaped portion 531 of the P clamp 525. Bolt through holes 535 are formed in the fastening piece portion 533 and the fixed piece portion 529.
In the wire harness 513, the outer peripheral surface of the clamp mark 515 is surrounded by the inner peripheral surface of the arc-shaped portion 531, and the bolt inserted through the bolt through hole 535 is fastened together with a fixing hole such as a vehicle body panel, thereby Attach to position.

JP 2006-14569 A JP 2011-172412 A JP 2012-217295 A

  However, when the above-described conventional clamp mark 515 is wound so as to surround the electric wire 501, the cross-sectional shape perpendicular to the direction in which the electric wire extends may not be circular but may be elliptical. When the winding type clamp mark 515 is attached so as to surround two or more electric wires 501 arranged side by side, the cross-sectional shape tends to be elliptical. In this way, the clamp mark 515 having an elliptical cross-sectional shape has a gap between the inner peripheral surface of the P clamp 525 attached to the vehicle body panel and the outer peripheral surface of the clamp mark 515, and is held when being fixed to the vehicle. There is a risk of variation in force. That is, the clamp mark 515 may be displaced in the direction in which the electric wire extends, and the attachment position accuracy may deteriorate. Further, when there are a plurality of clamp marks 515, the dimensional accuracy between the clamp marks 515 may be deteriorated.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric wire integrated clamp mark with improved electric wire holding performance and improved mounting position accuracy, and a wire harness provided with the electric wire integrated clamp mark. It is in.

The above object of the present invention is achieved by the following configuration.
(1) it is integrally molded by a resin material to a predetermined position in the extending direction of the plurality of electric wires, the mark body which surrounds the entire periphery in a state in which the plurality of wires spaced from each other is of the mark body A cylindrical portion having a circular cross-sectional shape formed on the outer peripheral surface, and flange portions formed on both ends of the mark body in the extending direction of the electric wire so as to protrude radially outward from the cylindrical portion. A wire-integrated clamp mark comprising:

  According to the electric wire integrated clamp mark having the configuration (1), the mark main body that surrounds the electric wire over the entire circumference is molded integrally with the resin material at a predetermined position in the extending direction of the electric wire. Thereby, the electric wire integrated clamp mark is attached with high positional accuracy in the extending direction of the electric wire, and no positional deviation occurs. A cylindrical portion is formed on the outer peripheral surface of the mark body. The wire-integrated clamp mark has a cylindrical body of the mark body that does not have an elliptical cross-section unlike conventional clamp marks. There is no variation. Therefore, the same holding force is ensured regardless of the mounting direction of the clamp member with respect to the cylindrical portion.

(2) The electric wire integrated clamp mark having the configuration of (1), wherein a hollow portion is formed on an outer peripheral surface of the mark main body, leaving at least a part of the cylindrical portion. Electric wire integrated clamp mark.

  According to the wire integrated clamp mark having the configuration of (2) above, the wire integrated clamp mark is formed by the clamp member by forming a hollow portion on the outer peripheral surface of the mark main body while leaving at least a part of the cylindrical portion. While securing the holding force, the volume of the thinned portion, the amount of resin material used in the mark body, and the weight are reduced.

(3) The electric wire integrated clamp mark having the configuration of (1) or (2) above, wherein the resin material is harder than a cushion material provided on an inner peripheral surface of a clamp member attached to the mark body. An electric wire integrated clamp mark.

  According to the electric wire integrated clamp mark having the configuration of (3) above, when the clamp member is attached to the mark main body, the cushion material provided on the inner peripheral surface is in close contact with the cylindrical portion while being elastically deformed. Holding performance is improved.

(4) A wire harness comprising the electric wire integrated clamp mark having any one of the constitutions (1) to (3).

  According to the wire harness having the above configuration (4), there is no variation in the holding force of a clamp member such as a P clamp when the electric wire is fixed to the support portion, so that the clamp member has high positional accuracy in the extending direction of the electric wire. It will be attached with no misalignment.

  According to the electric wire integrated clamp mark and the wire harness according to the present invention, the holding performance of the electric wire can be improved and the mounting position accuracy can be increased.

  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 the perspective view which represented the electric wire integral clamp mark which concerns on 1st Embodiment of this invention with the electric wire. It is the perspective view showing the state where the P clamp was fixed to the electric wire integrated clamp mark shown in FIG. It is the side view which notched a part of P clamp fixed to the electric wire integrated clamp mark shown in FIG. It is a whole perspective view of the micro molding machine which molds the electric wire integrated clamp mark shown in FIG. (A) is the perspective view which represented the electric wire integral clamp mark which concerns on 2nd Embodiment of this invention with the electric wire, (b) is the perspective view which looked at (a) from diagonally downward. (A) is a top view of the electric wire integrated clamp mark shown in FIG. 5, (b) is a side view of (a), (c) is a bottom view of (a). It is the side view which notched a part of P clamp fixed to the electric wire integral clamp mark shown in FIG. It is a top view of the wire harness provided with the conventional clamp mark. It is an expansion perspective view of the clamp mark shown in FIG. It is a perspective view before winding of the clamp mark shown in FIG. It is a perspective view of P clamp.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an electric wire integrated clamp mark according to a first embodiment of the present invention together with an electric wire.
The electric wire integrated clamp mark 11 according to the first embodiment is applied to various wire harnesses mounted on a vehicle. In the following embodiment, an example in which the electric wire integrated clamp mark 11 is used for a battery cable 13 that is a wire harness will be described. The battery cable 13 has two electric wires 19, for example, a small-diameter electric wire 15 and a large-diameter electric wire 17. The electric wire 19 is a covered electric wire in which a conductor made of a stranded wire or a single wire is covered with an insulating jacket. The battery cable 13 is configured by integrally attaching the electric wire integrated clamp mark 11 to a predetermined position of the electric wire 19 by molding.

  The electric wire integrated clamp mark 11 includes a mark main body 21 that surrounds the electric wire 19 over the entire circumference, a cylindrical portion 23 formed on the outer peripheral surface of the mark main body 21, and both ends of the mark main body 21 in the extending direction of the electric wire 19. And a flange portion 31 formed on the side as a main configuration.

  The mark main body 21 is integrally molded with a resin material at a predetermined position in the extending direction of the electric wire 19 and surrounds the electric wire 19 over the entire circumference. In the first embodiment, the mark main body 21 is formed in a substantially cylindrical shape.

  In the first embodiment, the cylindrical portion 23 becomes a side surface (circumferential outer peripheral surface) of the substantially columnar mark main body 21. Accordingly, the cylindrical portion 23 has the same cross-sectional shape at an arbitrary position in the direction along the axis of the mark main body 21.

In the first embodiment, the flange portion 31 is formed in a bowl shape having an outer diameter larger than that of the cylindrical portion 23 so as to protrude outward in the radial direction from the cylindrical portion 23. It is provided at both ends in the extending direction of the electric wire 19. That is, the electric wire integrated clamp mark 11 of the first embodiment is formed in a bobbin shape having a pair of flange portions 31 at both ends of the mark body 21.
The flange portion according to the present invention is not limited to the flange-shaped flange portion 31 that is continuous along the outer peripheral surface of the mark main body 21, and is configured by a plurality of protrusions that are intermittently protruded along the outer peripheral surface of the mark main body 21. You can also

Next, a micro molding machine that molds the electric wire integrated clamp mark 11 integrally with the battery cable 13 will be described.
As shown in FIG. 4, the micro molding machine 33 for integrally molding the electric wire integrated clamp mark 11 on the battery cable 13 is a molding machine that can be operated by one worker without external power such as an electric motor, The molding die 35 is made of metal or synthetic resin, a clamping device (not shown), and a low-pressure injection device 37 for injecting molten resin into the molding die 35 under pressure.

  The low pressure injection device 37 has a heating cylinder 39 provided with a heater for heating and melting a synthetic resin material such as polypropylene, a plunger 41 for injecting the molten resin in the heating cylinder 39 from a nozzle (not shown), and the plunger 41 is advanced. An injection cylinder 43 to be driven, a handle 45 for driving the injection cylinder 43, and a temperature controller 47 for maintaining the heating temperature of the heating cylinder 39 at a desired temperature, and these are device columns 51 erected on a pedestal 49. It is supported by.

  Note that the micro molding machine 33 in this embodiment has a maximum amount of resin that can be molded by one injection molding of about 10 g, and when the mold 35 is clamped, an air cylinder, a link, or the like What can be done manually using. Therefore, the low pressure injection device 37 may drive the injection cylinder 43 by external power such as an electric motor or air. More specifically, as the micro molding machine 33, for example, a well-known “injection molding apparatus” disclosed in JP 2010-260297 A, JP 2012-30429 A, JP 2013-103492 A, and the like. Can be used.

The mold 35 is a horizontal split mold having a lower mold 53 and an upper mold 55, and an upper cavity 56 is formed on a mold dividing surface (lower surface) of the downward upper mold 55. In addition, a lower cavity 58 having the same shape as the upper cavity 56 is formed on the mold dividing surface (upper surface) of the upward lower mold 53. Then, the lower mold 53 and the upper mold 55 are clamped together and the lower cavity 58 and the upper cavity 56 are integrated to define the cavity 60 inside. The mold 35 is clamped in a state where the electric wire 19 is disposed inside the cavity 60.
The upper die 55 includes a gate (not shown) that allows the cavity 60 and the nozzle of the low-pressure injection device 37 to communicate with each other.

In the mold clamping step, the mold 35 is clamped by placing the electric wire 19 in the cavity 60. Thereby, a space filled with a resin material is defined between the cavity 60 and the electric wire 19. The capacity of the filling space when the mold 35 is clamped is several cm ³ . In this embodiment, the mold 35 is a horizontal split mold, but it may be a vertical split mold.

  In the injection process following the mold clamping process, the molten synthetic resin is injected at a low pressure from the gate. The molten resin injected into the cavity 60 is filled in the filling space. In this embodiment, the filling space is a pincushion shape. By solidifying the resin material filled in the filling space, the electric wire integrated clamp mark 11 is integrally molded at a predetermined position of the electric wire 19.

  The electric wire integrated clamp mark 11 molded integrally with the electric wire 19 is attached with a fixed strength that does not move with respect to the electric wire 19 within the range of the prescribed electric wire holding strength. In other words, the electric wire integrated clamp mark 11 can be moved along the electric wire 19 by applying a force equal to or greater than the prescribed electric wire holding strength. Also in this case, the movement of the electric wire integrated clamp mark 11 relative to the electric wire 19 is restricted after being fixed to the vehicle body panel or the like by the P clamp (clamp member) 57 attached to the cylindrical portion 23 (FIG. 2). reference).

  As shown in FIG. 2, the P clamp 525 is the same as the conventional one (see FIG. 11). In other words, the clamp body 527 is a clamp member made of a strip-shaped metal plate and formed in a substantially R shape in which a strip-shaped fixed piece 529 and a fastening piece 533 are respectively connected to both ends of the arc-shaped portion 531. Bolt through holes 535 through which the mounting bolts 70 are inserted are formed in the tightening piece portion 533 and the fixed piece portion 529.

  Further, a rubber cushion material 61 is provided on the inner peripheral side of the arc-shaped portion 531 of the P clamp 525. The cushion material 61 has a substantially C-shaped cross-section in the direction along the axis of the mark main body 21 and covers the inner peripheral surface of the arc-shaped portion 531.

  The wire integrated clamp mark 11 according to the first embodiment is formed of a resin material (polypropylene or the like) that is harder than the rubber of the cushion material 61. As a result, as shown in FIG. 3, when the P clamp 525 is fastened to the cylindrical portion 23 of the mark main body 21, the cushion material 61 is elastically deformed and closely contacts the cylindrical portion 23 without a gap.

  As shown in FIG. 2, the P clamp 525 has a clamp piece 533 and a fixed piece 529 that are clamped by a mounting bolt (fastener) 70 that penetrates both of the bolt through holes 535, whereby an electric wire integrated clamp mark 11 cylindrical portions 23 are surrounded and tightened. At this time, the mounting bolt 70 is passed through a clamp mounting hole formed in the vehicle body panel or the bracket, and fastens the vehicle body panel and the P clamp 525 together. Thereby, the battery cable 13 is fixed to a predetermined position such as a vehicle body panel by the P clamp 525 via the electric wire integrated clamp mark 11.

Next, the operation of the wire integrated clamp mark 11 according to the first embodiment will be described.
In the electric wire integrated clamp mark 11 according to the first embodiment, the mark main body 21 surrounding the electric wire 19 over the entire circumference is molded integrally with a resin material at a predetermined position in the extending direction of the electric wire 19. Thereby, the electric wire integrated clamp mark 11 is attached with high positional accuracy in the extending direction of the electric wire 19 and does not cause a positional shift.

  In addition, the electric wire 19 of the battery cable 13 may be one or plural. In addition, the electric wire integrated clamp mark 11 can be provided at a plurality of locations in the extending direction of the electric wire 19.

  A cylindrical portion 23 is formed on the outer peripheral surface of the mark main body 21. The cross-sectional shape of the cylindrical portion 23 is circular. As shown in FIG. 1, when the battery cable 13 includes two electric wires 19, the conventional clamp mark 515 (see FIG. 9) has an elliptical cross-sectional shape orthogonal to the extending direction of the electric wires 19. On the other hand, the electric wire integrated clamp mark 11 according to the first embodiment is molded by the molding die 35 so that the resin material surrounds the two electric wires 19 and the mark body 21 is formed. However, a circular cylindrical portion 23 can be provided without fail.

  As a result, since the cylindrical portion 23 of the mark main body 21 does not have an elliptical cross section unlike the conventional clamp mark 515, the electric wire integrated clamp mark 11 has a P clamp when the electric wire 19 is fixed to the vehicle body panel. There is no variation in the holding force of 525. Accordingly, the same holding force is ensured regardless of the mounting direction of the P clamp 525 with respect to the cylindrical portion 23.

Moreover, since the mark main body 21 is integrally molded over the entire circumference of the electric wire 19, sand or the like does not enter between the electric wire 19 and the mark main body 21 during traveling. Therefore, there is no possibility that the coating of the electric wire 19 is worn by sand or the like that enters between the mark main body 21 during traveling.
On the other hand, in the conventional clamp mark 515 shown in FIG. 9, a sheet-like clamp mark material 519 is wound around the outer peripheral surface of the electric wire 501, so that a gap may be generated between the electric wire 501 and the electric wire 501. This gap is particularly prominent when two or more wires 501 are lined up side by side. That is, the V-groove portion at the upper and lower central portions of the two electric wires 501 having an infinite cross section forms a gap with the inner peripheral surface of the P clamp 525. As a result, when the electric wire 501 travels, sand or the like may enter the gap between the electric wire 501 and the clamp mark 515, and the coating may be worn.

  Furthermore, in the electric wire integrated clamp mark 11 of the first embodiment, the relative movement in the axial direction between the mark main body 21 and the P clamp 525 is restricted by the flange portion 31, so that the mounting position accuracy of the P clamp 525 is further improved. In addition, the mark main body 21 does not fall off from the P clamp 525.

Next, a second embodiment of the electric wire integrated clamp mark according to the present invention will be described.
As shown in FIGS. 5 to 7, in the electric wire integrated clamp mark 63 according to the second embodiment, the lightening portions 67 and 71 are formed on the outer peripheral surface of the mark main body 65. These lightening portions 67 and 71 are formed by using a mold having a lightening portion forming portion different from the above-described forming die 35.

  The lightening portion 67 is formed such that a part of the molding surface in the circumferential direction between the pair of cylindrical portions 23A is arranged radially inward of the cylindrical portion 23A. As shown in FIG. 5A, the lightening portion 67 is formed by forming a flat surface 69 between the pair of cylindrical portions 23 </ b> A. Further, as shown in FIG. 5 (b), the lightening portion 71 is formed by forming a molding surface sandwiched between the pair of cylindrical portions 23 </ b> A as a concave portion 73. As shown in FIG. 6, in the electric wire integrated clamp mark 63 according to the second embodiment, both the lightening portion 67 having the flat surface 69 and the lightening portion 71 having the concave surface portion 73 have the diameter of the mark main body 65. It is provided on both sides of the direction.

Next, the operation of the electric wire integrated clamp mark 63 according to the second embodiment will be described.
As shown in FIG. 7, in the electric wire integrated clamp mark 63 according to the second embodiment, between the pair of cylindrical portions 23 </ b> A in contact with the inner peripheral surface (cushion material 61) of the P clamp 525, A lightening portion 71 is provided. The molding surfaces of the lightening part 67 and the lightening part 71 are arranged radially inward of the cylindrical part 23A. That is, a closed gap 75 is formed between the inner peripheral surface of the P clamp 525 and the molding surfaces of the thinned portion 67 and the thinned portion 71.

The electric wire integrated clamp mark 63 reduces the volume of the closed gap 75, the amount of resin material used, and the weight. The mark main body 65 can further reduce the contact area between the P clamp 525 and the P clamp 525 as long as a predetermined holding force can be secured with the cylindrical portion 23A having a circular cross-section at least partially. Therefore, the lightening portion 67 and the lightening portion 71 are provided on the outer peripheral surface of the mark main body 65 within the range of the contact area that can be reduced.
In the electric wire integrated clamp mark 63 according to the second embodiment, the lightening portion 67 is formed on a part of the molding surface in the circumferential direction between the pair of cylindrical portions 23A arranged on both ends of the mark body 65. Although the lightening part 71 is provided, the lightening part of the present invention is not limited to this. For example, a hollow portion can be provided on each molding surface in the circumferential direction of the outer peripheral surface at both ends of the cylindrical portion disposed in the center of the mark body. In other words, the electric wire integrated clamp mark of the present invention can be provided with a mark that can prevent a variation in the holding force of the clamp member when fixing the electric wire, leaving a cylindrical portion with a circular cross-section in at least a part of the mark body. A thinned portion can be appropriately provided on the outer peripheral surface of the main body.

Therefore, according to the electric wire integrated clamp marks 11 and 63 according to the above embodiments, the holding performance of the electric wire 19 can be improved, and the mounting position accuracy can be improved.
Moreover, according to the battery cable 13 according to each of the above embodiments, since the holding force of the P clamp 525 when the electric wire 19 is fixed to the vehicle body panel does not vary, the P clamp 525 is high in the extending direction of the electric wire 19. It is attached with position accuracy and does not cause displacement.

Here, the features of the embodiment of the electric wire integrated clamp mark according to the present invention described above will be briefly summarized below.
[1] A mark body (21) integrally molded with a resin material at a predetermined position in the extending direction of the electric wire (19) and surrounding the electric wire (19) over the entire circumference,
A cylindrical portion (23) formed on the outer peripheral surface of the mark body (21);
Flange portions (31) formed on both end sides in the extending direction of the electric wire (19) in the mark body (21) so as to protrude radially outward from the cylindrical portion (23);
An electric wire integrated clamp mark (11) comprising:
[2] An electric wire integrated clamp mark having the configuration of the above [1],
On the outer peripheral surface of the mark main body (65), a hollow portion (67, 71) is formed, leaving at least a part of the cylindrical portion (23A), and an electric wire integrated clamp mark (63) ).
[3] A wire-integrated clamp mark (11, 63) configured as described in [1] or [2] above,
The electric wire integrated clamp mark, wherein the resin material is a material harder than a cushion material (61) provided on an inner peripheral surface of a clamp member (P clamp 525) attached to the mark body (21, 65). (11, 63).
[4] A wire harness (battery cable 13) including the electric wire integrated clamp mark (11, 63) having any one of the above-described configurations [1] to [3].

  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.

11 ... Electric wire integrated clamp mark 13 ... Battery cable (wire harness)
DESCRIPTION OF SYMBOLS 19 ... Electric wire 21 ... Mark main body 23 ... Cylindrical part 31 ... Flange part 525 ... P clamp (clamp member)

Claims (4)

Are integrally molded by a resin material to a predetermined position in the extending direction of the plurality of electric wires, the mark body which surrounds the entire periphery in a state in which the plurality of wires spaced from each other,
A cylindrical portion having a circular cross-sectional shape formed on the outer peripheral surface of the mark body;
Flange portions formed on both ends of the mark body in the extending direction of the electric wire so as to protrude radially outward from the cylindrical portion;
An electric wire integrated clamp mark comprising: The electric wire integrated clamp mark according to claim 1,
An electric wire integrated clamp mark, wherein a hollow portion is formed on an outer peripheral surface of the mark body, leaving at least a part of the cylindrical portion. The electric wire integrated clamp mark according to claim 1 or 2,
The electric wire integrated clamp mark, wherein the resin material is a material harder than a cushion material provided on an inner peripheral surface of a clamp member attached to the mark main body.   The wire harness provided with the electric wire integrated clamp mark of any one of Claims 1-3.

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