JP5203087B2 - Link harness wiring structure - Google Patents

Description

  The present invention relates to a link harness routing structure in which a harness protector is provided on a link for opening and closing a roof of an automobile, for example, and a wire harness is flexibly routed.

  FIG. 3 shows one form of a conventional harness wiring structure for a link (see Patent Document 1).

  In this structure, a pair of links 41 and 42 are rotatably connected, a base end portion of one link 41 is rotatably supported by a vehicle body 43 of an automobile by a shaft portion 44, and a tip end of the other link 42 is provided. The power supply wire harness 46 is routed from the vehicle body 43 to the slide door 45 along both links 41 and 42, and one link is opened and closed as the slide door 45 is opened and closed. 41 is swingable in the vehicle front-rear direction with the shaft portion 44 as a fulcrum, and the other link 42 is swingable at a larger angle than the one link 41 with the intermediate shaft portion 47 as a fulcrum. It has been made to follow.

  The wire harness 46 is fixed to the links 41 and 42 with a tape winding 48. The connector 49 at the tip of the wire harness 46 is connected to the wire harness on the slide door side. The wire harness portion 50 led out from the tip of the other link 42 is expanded and contracted as the slide door 45 is opened and closed.

  FIG. 4 shows an embodiment of a harness routing structure using a conventional protector (see Patent Document 2).

  In this structure, a wire harness (a plurality of electric wires) 55 is inserted into the protector 54 using a protector 54 in which a pair of hook-shaped protector bodies 51, 52 made of synthetic resin are connected to each other by a hinge portion 53. The wire harness 55 is fixed to the tip of one protector main body 51 with a tape winding 56, and the locking clip 57 on the proximal end side of the other protector main body 52 is engaged with the hole of the vehicle body or the like. One protector body 51 is rotatable in the direction of the arrow with 57 as a fulcrum.

  FIG. 5 shows another form of a conventional harness wiring structure for a link.

  In this structure, the wire harness 62 is routed from the vehicle body side to the roof side along the link 61 for opening and closing the roof in the open vehicle to supply power.

  The wire harness 62 is routed and fixed obliquely upward along the vertical support wall 63 on the vehicle body side (the fixed portion is indicated by reference numeral 66), and the link 61 is rotatable on the support wall 63 by the shaft portion 64 in the vertical direction. The wire harness is inserted and fixed to a cylindrical portion (fixed portion) 65 provided on the link 61, and the roof is connected to the distal end side of the link 61. As the link 61 rotates, both the fixed portions 65 and 66 are supported. Between, the wire harness 62 bends at two places (the bent portions are indicated by 62a to 62d).

The roof is closed in a state where the link 61 is rotated upward, and the wire harness 62 is bent in a substantially square shape at the upper and lower fixing portions 65 and 66 (the bent portions are indicated by reference numerals 62a and 62b). It extends linearly between the fixing portions 65 and 66. The roof is opened and stored in the luggage room with the link 61 rotated counterclockwise in FIG. 5 at an angle of approximately 180 °, and the wire harness 62 is substantially semicircular between the fixing portions 65 and 66. (Bent portion is indicated by reference numeral 62c) and bent in the direction of approximately 90 ° before the link-side (lower) fixing portion 65 (the bent portion is indicated by reference numeral 62d).
JP 2001-260770 A (FIG. 1) JP 2000-209732 A (FIG. 2)

  However, in the conventional structure of FIG. 3, when the wire harness 46 is repeatedly bent to a small diameter in the vicinity of the connecting shaft 47 of both the links 41, 42, the bending durability of the wire harness 46 is reduced. There was concern. In the conventional structure shown in FIG. 4, when the wire harness 55 is repeatedly bent to a small diameter in the vicinity of the connecting hinge 53 of the protector bodies 51 and 52, the bending durability of the wire harness 55 decreases. There was a concern.

  In the conventional structure shown in FIG. 5, the upper and lower bent portions 62a and 62b of the wire harness 62 when the roof is closed and the lower bent portion of the wire harness 62 when the roof is opened have a small radius of 62d. Since the wire harness 62 is bent so as to be bent, there is a concern that the bending durability of the wire harness 62 may be lowered. Further, since the wire harness 62 is largely bent into a substantially semicircular shape when the roof is opened (the portion denoted by reference numeral 62c), there is a concern that the bent portion 62c may be bitten into the link 61 or the like and worn due to rubbing. It was.

  In view of the above-described points, the present invention prevents a small-diameter bending such as bending of the wire harness when the wire harness is routed along the link, and wears the wire harness by biting or rubbing the link. An object of the present invention is to provide a link harness wiring structure that can prevent power supply and increase the reliability of power feeding.

In order to achieve the above object, in the link harness routing structure according to claim 1 of the present invention, the link is pivotally supported on the support wall, and the wire harness is routed from the support wall to the link. In the link harness routing structure, a protector is provided on each of the support wall and the link, both protectors have widened widened portions on the opening side, and the wire harness has a protector on the support wall side. The extended portion of the protector on the link side is routed from the expanded portion of the link side along the expanded portion of the protector on the link side, and has a straight wall on one side and a curved wall on the other side, and the link Is rotated in the opening direction of the protector on the support wall side, the expanded portion of the protector on the link side has an inclined wall on one side and a straight wall on the other side, and the wire harness has the support wall From the straight wall of the side protector When the link is rotated along the straight wall of the side protector and the link is rotated in the opposite direction, the expanding portion of the link side protector is connected to the straight wall on one side and the inclined wall on the other side. The wire harness is bent and routed from the curved wall of the protector on the support wall side along the inclined wall of the protector on the link side .

  With the above configuration, the wire harness bends with a large radius along the expanding portions of the protector side (fixed side) and link side (movable side) protectors as the link rotates. Thereby, bending of the wire harness and bending at a small radius are prevented, and the bending durability of the wire harness is improved.

When the link is rotated in the opening direction of the protector on the support wall side (when the link is rotated in the roof closing direction in the case of the roof opening / closing link), the wire harness is connected to the straight wall and the movable side of the fixed protector. The wire harness is bent at a large radius in contact with the straight wall of the protector, thereby improving the bending durability of the wire harness. In addition, when the link is rotated in the direction opposite to the opening of the protector on the support wall side (when the link is rotated in the roof opening direction in the case of the roof opening / closing link), the wire harness is the curved wall of the protector on the fixed side. Is smoothly bent in the direction of folding in contact with the inclined wall of the protector on the movable side (this bending radius is set to a radius that satisfies bending durability), whereby the exposed length of the wire harness is defined to be short, The slack is prevented and interference with the outside is prevented. The “inclined wall” means a wall portion inclined with respect to the straight wall (when the straight wall is used as a reference).

The harness wiring structure for a link according to claim 2 is the harness wiring structure for a link according to claim 1, wherein the inclined wall continues to a side wall portion having a loose angle in an expanded portion of the protector on the link side, The wire harness is routed in a curved shape along the inclined wall and the straight wall facing the side wall when rotating in the opposite direction.

With the above configuration, when the link is rotated in the opposite direction (when the roof opening / closing link is rotated in the roof opening direction), the straight wall on the opposite side from the inclined wall on the opening side within the enlarged diameter portion of the protector on the movable side. The wire harness is bent with a large radius over the wall in contact with the inclined wall and the straight wall on the opposite side. Thereby, the bending durability of a wire harness improves.

The harness wiring structure for a link according to claim 3 is the harness wiring structure for a link according to claim 1 or 2, wherein the expanding portion of the protector on the support wall side is between the curved wall and the straight wall. The wall portions on both sides are provided so as to protrude longer than the curved wall.

With the above configuration, when the link rotates in the opening direction of the protector on the support wall side, the wire harness is inserted into the wall portions on both sides and introduced into the opening on the movable side protector, The distance between the opening and the opening of the movable protector is defined to be short, and the exposed length of the wire harness is shortened. In addition, when the link is rotated in the direction opposite to the opening of the protector on the support wall side, the wire harness is introduced from the curved wall of the protector on the fixed side into the opening of the protector on the movable side. The distance between them is defined to be short, and the exposed length of the wire harness is shortened. As a result, interference between the wire harness and the outside is prevented.

A link harness routing structure according to a fourth aspect is characterized in that in the link harness routing structure according to any one of the first to third aspects, the openings of the two protectors are arranged close to each other.

With the above configuration, the wire harness is routed with a short harness exposure length from the fixed-side protector to the movable-side protector, and interference between the wire harness and the outside (such as a link) is prevented.

  According to the first aspect of the present invention, the wire harness can be bent with a large radius along the widened portion of both protectors as the link rotates, whereby the wire harness can be bent or with a small radius. Bending can be prevented, the bending durability of the wire harness can be improved, and the reliability of power feeding by the wire harness can be improved.

In addition, when the link is rotated in the opening direction of the protector on the support wall side, the wire harness is bent with a large radius along the straight wall of the protector on the fixed side and the straight wall of the protector on the movable side, The bending durability of the wire harness can be improved. In addition, when the link is rotated in the opposite direction, the wire harness is routed along the curved wall of the fixed protector and the inclined wall of the movable protector with little external exposure and without slack. Further, it is possible to prevent wear due to biting into the link and friction with the link.

According to the second aspect of the present invention, when the link is rotated in the opposite direction, the protector on the movable side is expanded.
Bend the wire harness with a large radius from the inclined wall on the opening side to the straight wall on the opposite side in the diameter
By doing so, the bending durability of the wire harness can be improved.

According to the invention described in claim 3 , when the link is rotated in the opening direction of the protector on the support wall side, the wire harness is exposed to the outside at the extended wall portions of the protector on the support wall side. When the length is shortened and the link is rotated in the opposite direction, the wire harness is routed with a short exposed length from the curved wall of the protector on the fixed side to the opening of the protector on the movable side. It is possible to prevent wear caused by friction between the wire harness and the link.

According to the fourth aspect of the present invention, the wire harness is routed from one protector to the other protector with a short exposed length, thereby preventing the wire harness from being bitten into the link or worn away by rubbing against the link. This can also improve the reliability of power feeding by the wire harness.

  1 to 2 show an embodiment of a harness wiring structure for a link according to the present invention.

  In this structure, a wire harness 3 is routed from the vehicle body 2 side to the roof side along the link 1 for opening and closing the roof in an open vehicle, and power is supplied to the vehicle body side and the link side. Harness protectors (hereinafter referred to as protectors) 4 and 5 are provided, and trumpet-shaped expanded portions 8 and 9 are provided on the side of the openings 6 and 7 of both protectors 4 and 5 to close the roof (not shown). Sometimes, the wire harness 3 is smoothly guided with a large bending radius R1 along the widened portion 8 of the protector 4 on the vehicle body side (fixed side) from the widened portion 9 of the protector 5 on the link side (movable side), and the roof When the door is closed, the wire harness 3 is U-turned along the widened portion 8 of the protector 4 on the vehicle body side from the widened portion 9 of the protector 5 on the link side, and smoothly guided with a large bending radius R2. It is.

  FIG. 1 shows a structure including a vehicle body 2 and a link 1, and FIG. 2 shows only both protectors 4 and 5 and a wire harness 3. The protectors 4 and 5 in FIG. 1 show the assembled state, and the protectors 4 and 5 in FIG. 2 show the inside. In FIGS. 1 and 2, when the roof is closed, a broken line is shown, and when the roof is opened, a solid line is shown. The structure of the vehicle body 2 and the link 1 is basically the same as the conventional example of FIG.

  In FIG. 1, a link 1 is supported by a vertical shaft 11 on a vertical support wall 10 of a vehicle body 2 so as to be rotatable in a vertical direction, and the link 1 is positioned obliquely forward when the roof is closed, When the roof is opened, it is located on the lower side diagonally backward. The rotation angle of the link 1 is approximately 180 °. In FIG. 1, the link 1 on the upper side (when the roof is closed) rotates counterclockwise and the link 1 on the lower side (when the roof is opened) is clockwise. Rotate upward. There is one link 1.

  As shown in FIG. 1, a substantially curved movable protector 5 is disposed diagonally forward and upward along the curved upper edge of the upper link 1, and is fixed to the collar wall 13 of the link 1 by a locking clip 12. Yes. A substantially U-shaped fixed-side protector 4 is disposed vertically on the support wall 10 and is fixed to the support wall 10 by a fixing portion 14 such as a locking clip.

  The wide lower opening 7 of the protector 5 on the upper side (when the roof is closed) is close to the wide upper opening 6 of the protector 4 on the fixed side, and the lower protector 5 follows the curved lower edge of the link 1 when the roof is opened. The upper opening 7 of the protector 5 (the lower opening 7 of the upper protector 5 is inverted to become the upper opening 7 of the lower protector 5) is located on the rear side of the fixed protector 4. Located near the side wall 15 and the rear opening 6a.

  As shown in FIG. 2, the protector 5 on the movable side has left and right bases (indicated by reference numeral 5 in FIG. 2) that are locked to each other by a locking means 16 (FIG. 1) comprising a locking frame piece 16a and an engaging claw. ) And a cover (instead of reference numeral 5 in FIG. 1), the base and the cover are formed in a substantially side-shaped shape with a side wall 17 bent in a substantially square shape and a bending angle smaller than that of the side wall 17. The other side wall 18 bent in a U-shape, and the wall portions 19 (FIG. 1) and 20 (FIG. 2) on both right and left sides (front side and back side) between the side walls 17 and 18; The distal end (opening 7) side of the other side wall 18 is inclined outwardly at a smaller angle to form an inclined wall 18a for harness guidance, and a side wall portion 18b having a looser angle than the inclined wall 18a follows the inclined wall 18a. 18a and the side wall portion 18b are smoothly curved and continue.

  The one side wall 17 is positioned straight with respect to the inclined other side wall 18, and has a straight wall 17a facing the inclined wall 18a and the side wall portion 18b. Between the front end of one side wall 17 and the front end of the other side wall 18, left and right wall portions (substitute with reference numeral 20) having a substantially fan shape (trumpet shape) are formed. And the left and right wall portions 20 that are substantially fan-shaped constitute an expanded portion 9, and a curved opening 7 is formed at the distal end of the expanded portion 9 (the distal ends of the left and right wall portions 20 are curved). ).

  The front-side halves 18a and 18b of the other side wall 18 are inclined in the expanding direction (outward) with respect to the straight wall 17a at the front-end-side half of the one side wall 17, and are wide between both halves 17a, 18a and 18b. The left and right (front side and back side) wall portions 20 face each other and are surrounded by both halves and both wall portions 20 to form a wide harness insertion space. The base end side half 17b of the one side wall 17 and the base end side half 18c of the other side wall 18 are positioned in parallel, and the narrow left and right wall portions are positioned between the half halves 17b and 18c. A narrow harness insertion space is configured by being surrounded by the halves 17b and 18c and the left and right wall portions. The locking clip 12 is integrally provided on the proximal side half 18 c of the other side wall 18.

  The protector 4 on the fixed side has left and right bases that are locked to each other by a locking means 21 (FIG. 1) that includes a locking frame piece 21a (FIG. 2) and an engaging claw (represented by reference numeral 4 in FIG. 2). And a cover (instead of reference numeral 4 in FIG. 1), the base and the cover are bent in a substantially U-shape and are substantially parallel to one side wall 22 and the other side wall 23, both sides The left and right vertical wall portions 25 (FIG. 1) and 26 (FIG. 2) between the walls 22 and 23 form a narrow harness insertion space, and the upper half portions 22a and 23a of the one side wall 22 and the other side wall 23. Is positioned vertically, the lower half portions 22b and 23b are inclined obliquely rearward, and the upper end portion of one side wall 22 is extended longer (vertically) than the upper end portion of the other side wall 23 to be a straight wall 22c, the upper end of the other side wall 23 has an outer surface inclined outward (rearward), and a harness guide circle on the inner surface side. And a curved wall 24 having a Jo curved surface 24a.

  Wall portions 25 (FIG. 1), 26 (FIG. 2) on both the left and right sides (front side and opposite side) of a substantially fan shape in a shape in which the extension line of the upper end portion of the other side wall 23 and the upper end of one side wall 22 are connected by an arc. The upper end portion of one side wall 22, the upper end portion of the other side wall 23, and the left and right fan-shaped wall portions 25, 26 constitute an upward expanding portion 8, and the fan-shaped wall portion 25 extends from the upper end of the other side wall 23. , 26, the opening 6 is formed in a range up to the upper end of the one side wall 22. The opening 6 is a continuous opening 6a and upper opening 6b. The left and right wall portions 25, 26 extend longer than the upper end of the curved wall 24. A fixing portion 14 such as a locking clip is provided at an intermediate portion of the one side wall 22.

  As shown by the chain line in FIG. 2, when the roof is closed, the opening 7 of the protector 5 on the movable side (upper side) is positioned obliquely rearward and downward, and the widening portion 9 continues on the upper side of the opening 7. The upper end of one side wall 22 of the protector 4 on the fixed side is located close to the wire protector 5, and the wire harness 3 is led out from the opening 7 while being bent along the inner surface of the one side wall 17 with a large bending radius. It is routed and immediately introduced and routed along the one side wall 22 from the opening 6 of the protector 4 on the fixed side (the exposed portion 3a of the wire harness 3 is short).

  In this way, the wire harness 3 is bent at an extremely large radius R1 along the one vertical side wall 22 of the fixed-side protector 4 and the one side wall 17 obliquely rearward and downward of the movable-side protector 5. 5), the wire harness 3 is prevented from being bent in a substantially square shape, so that no excessive bending stress acts on the wire harness 3 when the roof is closed, and the bending durability of the wire harness 3 due to repeated opening and closing of the roof. Is secured well.

  As shown by the solid line in FIG. 2, when the roof is opened, the protector 5 on the movable side rotates counterclockwise at an angle of approximately 180 ° with respect to the time when the roof of the chain line is closed, and is positioned approximately symmetrically. The expanded portion 9 continues below the opening 7, and the rear opening 6 a of the fixed protector 4 is positioned above the opening 7.

  The wire harness 3 is bent and bent in a substantially inverted U shape downward (indicated by reference numeral 3b) while being stably guided and supported by the upper curved surface 24a of the other side wall 23 of the fixed-side protector 4. It is introduced from the opening 7 of the protector 5 along the inner surface of the inclined wall portion 18a at the upper part of the other side wall 18 and is bent downward in the widening portion 9, and before the bent portion 17c in the middle of the protector, In contact with the inner surface of the straight wall 17a, it bends smoothly with a large radius R2 within a wide space in the upper half of the protector 5.

  Thus, the wire harness 3 bends in an inverted U shape with a smaller radius than the conventional (FIG. 5) along the curved wall 24a on the opening side of the protector 4 on the fixed side, and the adjacent (close) movable side. By immediately being introduced into the opening 7 of the protector 5, the exposed portion 3c of the wire harness 3 is suppressed to a small extent, and the bent portion 3b is bitten by the link or the like, or slides on the link 1 and wears. Anxiety is eliminated. The radius of the inverted U-shaped bent portion 3b is set to a dimension larger than the limit that does not lower the bending durability of the wire harness 3 (because the bent portion 3b is not bent so as to be bent, durability is ensured). .

  Further, the wire harness 3 introduced from the fixed-side protector 4 into the movable-side protector 5 is bent at large radii R1 and R2 within the movable-side protector 5, thereby 90 ° as in the prior art (FIG. 5). The bending of the direction is eliminated, and the bending durability of the wire harness 3 accompanying the repeated opening and closing of the roof is ensured satisfactorily.

  Further, as the link 1 is rotated, the wire harness 3 is slidably guided along the inner surfaces of the left and right wall portions 25 and 26 of the expanding portion 8 of the protector 4 on the fixed side. (Exposure) to the outside of the wire harness 3 is suppressed, and the concern that the exposed portions 3a and 3c of the wire harness 3 are bitten by the link or the like and slides on the link 1 and wears out is eliminated.

  The wire harness 3 of this example is configured by covering a plurality of electric wires 27 with a flexible synthetic resin protective tube 28. The protective tube 28 terminates at the end of the protectors 4 and 5 opposite to the openings 6 and 7, and a plurality of electric wires 27 are exposed or taped from the end of the tube so that the vehicle body 2 and the roof (not shown). ).

  In the above embodiment, the lower half portions 22b and 23b of the protector 4 on the fixed side are bent rearward. However, the lower half portion may be bent forward, or the lower half portion may be excluded and the wire is removed. It is also possible to route the harness 3 vertically downward.

  Further, the link harness routing structure of the present invention is not limited to the roof opening / closing type link 1 of an automobile, and can be applied to, for example, a trunk opening / closing link or a back door opening / closing link. is there.

  Moreover, in the said embodiment, although the support wall 10 by the side of a vehicle body was formed vertically and the link 1 was rotated on the imaginary vertical surface, for example, the support wall 10 was formed horizontally and the link 1 was aerial. The link harness routing structure can also be applied when the robot is rotated on a horizontal plane (when FIG. 1 is viewed as a plan view).

It is a front view of the assembly | attachment state to the vehicle which shows one Embodiment of the harness wiring structure for a link which concerns on this invention. It is a front view of a protector and a wire harness excluding a vehicle and a link, similarly showing a harness wiring structure. It is a perspective view which shows one form of the conventional harness wiring structure for a link. It is a front view which shows one form of the conventional harness protector. It is a front view which shows the other form of the conventional harness wiring structure for a link.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Link 3 Wire harness 4,5 Protector 6,7 Opening 8,9 Expansion part 10 Support wall 17a Straight wall 18a Inclined wall 18b Side wall part 22c Straight wall 24 Curved wall 25, 26 Wall part of both sides

Claims (4)

In a link harness routing structure in which a link is pivotally supported on a support wall and a wire harness is routed from the support wall to the link, a protector is provided on each of the support wall and the link. Each of the protectors has an expanded portion that is widened on the opening side, and the wire harness is routed from the expanded portion of the protector on the support wall side along the expanded portion of the protector on the link side ,
The expanding part of the protector on the support wall side has a straight wall on one side and a curved wall on the other side, and when the link rotates in the opening direction of the protector on the support wall side, The expanding portion of the protector has an inclined wall on one side and a straight wall on the other side, and the wire harness is curved from the straight wall of the protector on the support wall side along the straight wall of the protector on the link side When the link is rotated and the link rotates in the opposite direction, the expanding portion of the protector on the link side has a straight wall on one side and an inclined wall on the other side, and the wire harness is on the support wall side A harness wiring structure for a link which is bent and wired from the curved wall of the protector along the inclined wall of the protector on the link side . The inclined wall follows the loosely angled side wall portion at the link-side protector expansion portion, and when the link rotates in the opposite direction, along the inclined wall and the straight wall facing the side wall portion. link harness routing structure according to claim 1, wherein the wire harness is characterized in that it is wired in a curved shape. The support in the expanding portion of the wall of the protector the curved wall and on both sides between the straight wall wall portion according to claim 1 or 2, characterized in that protrudes longer than the curved wall Link harness wiring structure. The harness wiring structure for a link according to any one of claims 1 to 3, wherein openings of the two protectors are arranged close to each other .

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