JP2009254076A - Harness exterior structure for power feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the appearance of a power feeding apparatus by eliminating the unevenness of the mesh-like tube and to prevent any protrusion from passing through the mesh-like tube to protect the electric wire inside the tube by preventing interference of the tube with surrounding components and by preventing the intrusion of fugitive dust or the like inside the harness through the mesh-like tube. <P>SOLUTION: In the power feeding apparatus 1 for guiding a wire harness 2 from a case 45 in a freely advancing and retreating state, a plurality of electric wires 46 of the wire harness 2 are covered with flexible inside tubes 3, 6 of an annular cross section, and the inside tubes 3, 6 are covered with a soft mesh-like outside tube 47. The inside tube 3 is a twisted tube while the inside tube 6 is a spiral tube. The case 45 has a turned-up guide cylinder 41, allowing the wire harness 2 not only to be extended upward from the guide cylinder 41 but also to be drawn thereinto while being horizontally bent. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a harness exterior structure of a power feeding device in which an exterior member is mounted on the outer periphery of a wire harness led out from a case.

  5 to 6 show an embodiment of a conventional power feeding device (see Patent Document 1).

  As shown in FIG. 5, the power supply device 61 includes a synthetic resin case (spool) 62 including a circular body portion (winding portion) 65 and an upward long guide tube (leading portion) 66, and an inside of the case. The harness 63 is of a harness winding type including a drum 63 that is rotatably disposed on the main body and a mainspring spring 64 that urges the drum 63 in one rotation direction.

  The body portion 65 and the guide tube 66 are integrally formed. The guide tube 66 is formed in a rectangular shape in cross section, and protrudes upward from the upper side of the body portion 65 while curving in an arc shape with a large radius.

  As shown in FIG. 6, a drum 63 and a mainspring spring 64 are accommodated in a body portion 65, the drum 63 is rotatably supported by a shaft portion 67, and a wire harness 68 is wound around the outer periphery of the drum 63, as shown in FIG. One portion 68 a of the wire harness 68 is led out from the upper opening 66 a of the guide tube 66.

  As shown in FIG. 6, the other portion 68b of the wire harness 68 is wound as a harness surplus portion on the side of the drum 63 and accommodated in the body portion, and the harness portion 68c following the harness surplus portion 68b is outward from the body portion 65. Derived and connected to the power source (battery) side. The extra harness portion 68b is for absorbing the rotation of the drum 63.

  The case 62 includes a case main body 62a and a cover 62b. A wire harness 68 is mounted in the case main body with the cover 62b removed, and the cover 62b is closed and locked to the case main body 62a. The wire harness 68 is composed of a plurality of insulating coated electric wires. The plurality of electric wires (68) are converged by roughly winding a tape or covering with a flexible protective tube (exterior member).

As shown in FIG. 5, a connector 69 is disposed at the tip of the wire harness 68. The connector 69 is fixed to a sunroof or a luggage door for storing a roof (not shown), which is a movable structure on the power feeding side of an automobile, for example. A connector is connected to the side wire harness (not shown).
JP 2002-112444 A (FIGS. 1 to 4)

  In the conventional power supply device 61, the wire harness is moved up and down. However, like the power supply device 44 in FIG. 7A, for example, when the luggage door is opened, the wire harness 43 is an arrow as in FIG. The drum (not shown) in the case is pulled out upward from the case 45 as described above, and rotates against the force of the spring, so that the wire harness 43 is unwound from the drum. In some cases, the guide tube 41 is bent in a direction intersecting with the upper opening 42 while being rewound into the case by the force of the spring.

  In this case, when the wire harness 43 is pulled in the intersecting direction, it is rubbed and worn by the upper opening 42 of the guide tube 41, or the wire harness 43 is bent while rising from the opening 42. The upper opening 42 of the guide cylinder 41 is expanded in a trumpet shape (end-spreading) in the harness bending direction so as not to cause a problem that stress is applied.

  As the wire harness 43, similarly to the example of FIG. 5, a plurality of electric wires 46 are covered with a synthetic resin flexible net-like tube (federal tube) 47 and converged. As shown in an example of the mesh tube 47 in FIG. 8, the meshes 48 approach each other when the electric wire is not inserted in FIG. 8, and the mesh 48 expands when the electric wire is inserted, and a wide gap is generated between the meshes.

  However, when the mesh tube 47 is used, the wires 46 are arranged unevenly in the mesh tube 47 as shown in FIG. 7B, so that the mesh tube 47 is connected to the wires 46 on the outer peripheral side of each wire 46. 9 are likely to cause circumferential irregularities 47a and 47b, which may cause a problem of poor appearance when mounted on a vehicle or the like, or have a mesh shape with respect to a vehicle-side peripheral component 49 adjacent to the mesh tube 47 as shown in FIG. There is a concern that the gap L1 between the convex portion 47b of the tube 47 becomes smaller than the gap L2 between the concave portion 47a and the convex portion 47b interferes with the peripheral component 49, which may cause wear of the mesh tube 47.

  Also, as shown in FIG. 10, there is a concern that sand or dust 50 may enter the inside from the mesh 48 of the mesh tube 47 and the wires 46 may be worn when the wire harness 43 is bent, and the luggage is taken in and out of the luggage. In doing so, there is a concern that the projections 51 such as luggage enter from the mesh 48 of the mesh tube 47 and damage the inner electric wire 46 (FIG. 9).

  In view of the above points, the present invention improves the appearance by eliminating the irregularities of the mesh tube, prevents interference with peripheral components, and prevents the entry of dust and the like from the mesh tube into the harness. Furthermore, it is an object of the present invention to provide a harness exterior structure of a power feeding device in which a protrusion does not pass through a mesh tube and damage an internal electric wire.

  In order to achieve the above object, a harness exterior structure of a power feeding device according to claim 1 of the present invention is a power feeding device that allows a wire harness to be led out and retracted from a case in a flexible manner. The inner tube is covered with an inner tube having an annular cross section, and the inner tube is covered with a flexible net-like outer tube.

  With the above configuration, a plurality of electric wires are inserted into the inner space of the inner tube having an annular cross section (circular shape), a flexible outer tube is attached to the outer side of the inner tube, and the shape of the outer tube is a cross section along the inner tube. It becomes a ring. Thereby, it is prevented that the outer periphery of a flexible outer tube becomes uneven | corrugated shape along several electric wires. The inner tube receives sand, dust and protrusions passing through the outer tube and protects the inner wires from the sand, dust and protrusions.

  The harness exterior structure of the power supply apparatus according to claim 2 is the harness exterior structure of the power supply apparatus according to claim 1, wherein the inner tube is a twist tube.

  With the above configuration, the inner tube is formed in an annular cross section (circular shape) over the entire length along the outer peripheral surface of the twist tube in which the sheet member is wound in a cylindrical shape. In addition, the twist tube reliably protects the inner wires from sand, dust and protrusions without any gaps from the outside.

  The harness exterior structure of the power supply device according to claim 3 is the harness exterior structure of the power supply device according to claim 1, wherein the inner tube is a spiral tube.

  With the above configuration, the inner tube is formed in an annular cross-section (circular shape) along the outer peripheral surface of the spiral tube in which the belt-shaped member is spirally wound. The gap between the spiral portions of the spiral tube allows a little intrusion of sand, dust and protrusions as compared with the twist tube, but the bendability of the wire harness is enhanced by the gap between the spiral portions.

  The harness exterior structure of the power feeding device according to claim 4 is the harness exterior structure of the power feeding device according to any one of claims 1 to 3, wherein the case has an upward guide tube, and the wire harness extends from the guide tube. It extends | stretches upwards, It draws in bending horizontally.

  With the above-described configuration, for example, the wire harness extends upward from the case as the movable structure such as the luggage door opens and closes, and is pulled into the case while being bent laterally from the case. When this wire harness is bent, the outer tube does not have irregularities, so stress concentration of the outer tube due to the irregularities and the accompanying damage are prevented, and each electric wire caused by sand and dust intrusion when bent Wear and the like are prevented.

  According to the first aspect of the present invention, since the unevenness of the flexible outer tube is prevented by the inner tube, the appearance is improved and the commercial value is increased, and the interference with the peripheral parts due to the unevenness is prevented. Thus, wear of the outer tube is prevented. In addition, by receiving sand, dust, protrusions and the like passing through the outer tube with the inner tube, the inner wire is prevented from being worn or damaged, and the reliability of power feeding is increased.

  According to the second aspect of the present invention, the outer tube is surely annular in section along the cylindrical twist tube, and the twist tube reliably receives sand, dust, protrusions, and the like. The effect of the invention is promoted.

  According to the invention described in claim 3, the outer tube has an annular cross section along the spiral spiral tube, the occurrence of irregularities in the outer tube is prevented, the appearance is improved, the commercial value is increased, and the irregularities are caused. Interference with peripheral parts is prevented, and wear of the outer tube is prevented. Further, the bendability of the wire harness is improved by the spiral spiral tube, and the operation of pulling out and pulling in the case while bending the wire harness is smoothly performed.

  According to the fourth aspect of the present invention, when the wire harness is bent, the stress concentration of the outer tube due to the unevenness of the outer tube and the accompanying damage are prevented, and the wear of each electric wire due to the intrusion of sand and dust Etc. are prevented. Thereby, the reliability of the electric power feeding in the electric power feeder which expands and contracts while bending a wire harness improves.

  Fig.1 (a) (b) shows one Embodiment of the harness exterior structure of the electric power feeder which concerns on this invention.

  The power feeding device 1 includes a case 45 made of a synthetic resin including a substantially circular body portion (harness winding portion) 40 and an upward straight long guide tube (harness lead-out portion) 41. A wire harness 2 that is wound in an annular shape and led out along the guide tube 41, and the upper opening 42 at the tip (upper end) of the guide tube 41 is expanded in one direction orthogonal to the guide tube 41, so that the wire harness 2 Can be smoothly led out without rubbing with the upper opening end 42 by bending in the crossing direction.

  Then, as the harness exterior structure of the power supply device 1, a plurality of insulation-coated wires 46 are covered with a synthetic resin twist tube (inner tube or primary tube) 3 that is a harness exterior member, and the twist tube 3 is a synthetic resin net-like structure. It is covered with a tube 47 (federal tube which is an outer tube or a secondary tube). The wire harness 2 is configured by the inner electric wire 46, the intermediate twist tube 3, and the outer mesh tube 47.

  As shown in FIG. 2, the twist tube 3 is obtained by winding a single flexible resin sheet 3 ′ in the circumferential direction and wrapping the winding start end 3 a and the winding end end 3 b in the radial direction (wrapping). 2 is maintained in the free state, and the winding state of FIG. 2 is maintained. The operator opens the outer winding end 3b against the elastic force in the closing direction of the twist tube 3, and accommodates the electric wire 46 in the inner space 5 of the winding start end 3a. The outer peripheral surface 3c of the twist tube 3 has a substantially circular cross section in a state where the electric wire 46 is inserted into the inner space 5. Since the twist tube 3 is thin and has flexibility, it can correspond to the bent form of the wire harness 2 of FIG.

  As shown in FIG. 1B, by covering the outer side of the twist tube 3 with a flexible mesh tube 47 (by inserting the twist tube 3 from the end opening of the mesh tube 47 into the inner space 47c), the mesh tube 47 The outer peripheral surface 47d has a substantially circular cross section without unevenness. That is, the mesh tube 47 is routed along the outer circumferential surface 3c of the twist tube 3 having a circular section instead of along the projections and depressions of each electric wire 46, so that the outer circumferential surface 47d of the mesh tube 47 has a substantially circular cross section without irregularities. Become.

  As a result, as shown in FIG. 3, the gap (interval) L between the outer surface 47d of the outer mesh tube 47 and the peripheral part 49 in the vehicle or the like becomes constant, and the convex portion 47b of the mesh tube 47 of the prior art (FIG. 9) is formed. The resulting interference with the peripheral component 49 and the accompanying wear of the mesh tube 47 are prevented.

  Further, as shown in FIG. 2, the twist tube 3 shields the inner wire insertion space 5 without a gap over the entire circumference, so that sand / dust 50 and protrusions 51 are formed from the mesh 48 of the conventional mesh tube 47 (FIG. 10). Even if the intruder enters, the outer peripheral surface 3c of the twist tube 3 receives the sand / dust 50 and the protrusion 51 and prevents the intrusion to the inside. The electric wire 46 is reliably prevented from being damaged.

  Instead of the twist tube 3, as an inner tube, an unillustrated integral cylindrical tube (there is no slit-shaped cut 3d between the winding end 3b and the winding start end 3a, and it is integrally formed in a cylindrical shape) It is also possible to use a cylindrical tube having a cut (the winding start end 3a and the winding end end 3b joined on the same surface without wrapping).

  Further, instead of the twist tube 3, a spiral tube (inner tube or primary tube) 6 shown in FIG. 4 can be used. The spiral tube 6 is formed by winding a strip-shaped member 6 ′ made of synthetic resin in a spiral shape and maintaining the spiral shape in a free state. The operator puts the inner surface 6b of the winding start end (or winding end end) 6a on the electric wire 46, and winds the belt-like member 6 'around the electric wire 46 with an elastic force in the reduced diameter direction. The mesh tube (outer tube or secondary tube) 47 is placed over the spiral tube 6 (the spiral tube 6 is inserted into the inner space 47c (FIG. 1) from the end opening of the mesh tube 47).

  Since the spiral portions 6c are separated in a slit shape, the flexibility of the wire harness 2 when applied to FIG. Since there is a small gap 7 between the spiral portions 6 c, the invasion preventing property of the sand / dust 50 and the protrusions 51 (FIG. 10) is slightly inferior to that of the twist tube 3. Further, the invasion preventing property of the sand / dust 50 and the protrusion 51 is improved. Since the outer peripheral surface 6 d of the spiral tube 6 has a substantially circular cross section, the mesh tube 47 attached to the outside of the spiral tube 6 has a substantially circular cross section along the outer peripheral surface 6 d of the spiral tube 6.

  In FIG. 1, for example, when the luggage door is opened, the wire harness 2 is drawn straight up in the upward direction as indicated by an arrow from the upper opening 42 while being routed straight in the guide cylinder 41. The case 45 is fixed to the vehicle body or the like with a bracket (not shown). When the luggage door of FIG. 1 is closed, the wire harness 2 is pulled into the case 45 while being bent. The wire harness 2 moves corresponding to the rotation locus of a movable structure (not shown) such as a luggage door or roof.

  A connector 39 is disposed on the distal end side of the wire harness 2. The connector 39 is composed of an insulating resin connector housing (represented by reference numeral 39) and terminals (not shown) housed and locked therein, each terminal being connected to each electric wire 46 of the wire harness 2. Yes. The connector 39 is connected to a luggage door, a roof side auxiliary device, or a circuit connector (not shown).

  For example, a thick cylindrical shaft portion (not shown) is provided in the center of the inner space of the body portion 40 of the case 45, and when the wire harness 2 is accommodated, the wire harness 2 is wound around the shaft portion in a loop shape. The loop-shaped portion (excess length portion or winding portion) can be expanded or contracted around the shaft portion.

  The harness portion following the loop-shaped portion is led out from a small mouth portion (not shown) of the body portion 40 and fixed on the mouth portion side, and connected to a circuit (not shown) on the power source (battery) side by a connector or the like. The The shaft portion regulates the minimum diameter of the loop-shaped portion, and stably supports the loop-shaped portion in the body portion 45 when the wire harness 2 advances and retreats.

  Unless the conventional harness winding drum 63 and drum biasing spring 64 shown in FIG. 5 are used in the body 45, the internal structure is simplified, thinned, and lightened. The wire harness 2 has a loop shape with a certain degree of rigidity (elastic reaction force). It is also possible to accommodate the wire harness 2 in the case 45 in a wave shape, a bent shape or the like instead of a loop shape. Of course, it is possible to use a conventional drum 63 and spring 64. Further, in the example of FIG. 1, the body portion 40 protrudes in the bending direction of the wire harness 2, but the body portion 40 can also protrude in the direction opposite to the bending of the wire harness 2 according to the layout on the vehicle side. .

  In the above embodiment, an example in which the invention is applied to opening and closing a luggage door for storing a roof has been shown. However, the power feeding device 1 and its harness exterior structure of the present invention are not limited to a luggage door, but a vertically-rotating back door of an automobile, etc. It is also applicable to.

  Moreover, in the said embodiment, although demonstrated with the example using the harness winding-type case 45, the case which accommodates the wire harness 2 in a curved shape with elastic members, such as a leaf | plate spring, for example instead of winding was used. A harness exterior structure similar to the above can also be applied to a power feeding device (not shown). This power supply device is mounted on a sliding door or a sliding seat of an automobile.

  In the case 45 of the above embodiment, the guide tube 41 can be formed extremely short, or the guide tube 41 can be omitted and the wire harness 2 can be led out directly from the opening of the body portion 40. In this case, the case may be mounted on the slide door and the wire harness 2 may be swingably arranged on the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the harness exterior structure of the electric power feeder which concerns on this invention is shown, (a) is a front view, (b) is AA sectional drawing of (a). It is a perspective view which shows one form of a harness exterior member. It is sectional drawing which shows an example of the effect of a harness exterior structure. FIG. 7 is a perspective view showing another form of the exterior member. It is a front view which shows one form of the conventional electric power feeder. It is a longitudinal cross-sectional view which similarly shows the internal structure of an electric power feeder. The form of the harness exterior structure of the conventional electric power feeder is shown, (a) is a front view, (b) is BB sectional drawing of (a). It is a top view which shows the mesh tube as an exterior member. It is sectional drawing which shows one subject of the conventional harness exterior structure. It is a top view which shows the other subject of the conventional harness exterior structure.

Explanation of symbols

1 Power supply device 2 Wire harness 3 Twist tube (inner tube)
6 Spiral tube (inner tube)
41 Guide tube 45 Case 46 Electric wire 47 Mesh tube (outer tube)

Claims (4)

  In a power feeding device for leading and retracting a wire harness from a case, a plurality of electric wires of the wire harness are covered with a flexible inner ring-shaped inner tube, and the inner tube is covered with a flexible net-like outer tube. The harness exterior structure of the electric power feeder characterized.   The harness outer structure of the power feeding device according to claim 1, wherein the inner tube is a twist tube.   The harness outer structure of the power feeding device according to claim 1, wherein the inner tube is a spiral tube.   The power supply device according to any one of claims 1 to 3, wherein the case has an upward guide tube, and the wire harness is pulled upward from the guide tube and bent while being laterally bent. Harness exterior structure.

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