JP4728918B2 - Harness clamp for power supply - Google Patents

Description

  The present invention relates to a power supply harness clamp that is disposed on a vehicle body side and swings to support a wire harness when a power is constantly supplied from a vehicle body of an automobile to a slide door, for example, and a power supply structure using the power supply harness clamp. is there.

  6 to 7 show one embodiment of a conventional power supply harness clamp (see Patent Document 1).

  As shown in FIG. 6, the power supply harness clamp 62 is formed in a vertically divided box shape using a synthetic resin as a material, and the upper and lower divided clamps 63 and 64 are corrugated with a circular cross section which is a protective tube on the outer periphery of the wire harness. Wall portions 66 and 67 having semicircular groove portions 78 that engage with the circumferential concave grooves 22a of the tube 22 are provided on both ends (front and rear) in the harness insertion direction.

  Further, in this example, curved guide walls 65 for guiding the corrugated tube 22 are provided on both the left and right sides following the front wall portion 66 of the lower divided clamp 63, and horizontally below the guide wall 65. A flat receiving wall 80 is provided.

  Both split clamps 63 and 64 are locked to each other by locking means such as the locking projection 16 and the engagement frame piece 17 in a state where the corrugated tube 22 is inserted so as to be rotatable in the circumferential direction.

  As shown in FIG. 7, the corrugated tube 22 of the wire harness slides along the lower receiving wall 80 while swinging left and right along the guide wall 65 in a curved manner as indicated by an arrow.

  As a power supply harness clamp other than the above, for example, an annular inner clamp (not shown) is disposed inside the upper and lower split clamps (outer clamps) 63 and 64 so as to be rotatable in the circumferential direction, and a corrugated wire harness is disposed on the inner clamp. A device for fixing a tube is also described in Patent Document 1. A corrugated tube having an oval cross section (flat type) is applied to the harness clamp. It is also known to use a spherical inner clamp.

  Further, as shown in FIG. 8, the left and right guide walls 69 and 70 are formed to have different lengths, and the guide walls 69 and 70 and the receiving wall 81 are not only the lower divided clamps but the upper divided clamps. Also, a power supply harness clamp 82 formed is also known. A power supply harness clamp that fixes a wire harness in a circumferential direction so as not to rotate is also known. It is also well known to use a protection tube such as a mesh tube other than the corrugated tube, or to use a plurality of wires bundled in tape as a wire harness without using a protection tube.

  The power supply harness clamps 62 and 82 are disposed in a step portion of the vehicle body or in the vicinity thereof in order to constantly supply power to the slide door of the automobile. The front / rear and left / right directions of the power supply harness clamps 62 and 82 are described as “front” where the receiving walls 80 and 81 are provided and “left and right” where the guide walls 65, 69 and 70 are provided.

  9 to 10 show an embodiment of a power feeding device including a conventional power feeding harness clamp (see, for example, Patent Document 2). The description will be made with the front, rear, left, and right directions in the power supply apparatus being matched with the direction of the vehicle.

  This power supply device 50 is disposed on the side of the automobile slide door 41, and is made of a synthetic resin protector 42 that houses the wire harness 43 in a bendable manner, and a metal plate that urges the wire harness 43 upward in the protector. A spring 44 and a power supply harness clamp 53 that is disposed on the vehicle body 47 side and rotatably holds the wire harness 43 led out from the protector 42 are provided.

  The protector 42 includes a protector base (substitute with reference numeral 42) and a protector cover (not shown). The protector base and the protector cover each have a vertical base wall 51 and an outer peripheral peripheral wall 52 that face each other. The protector cover is locked to the protector base by locking means, and the protector base is fixed to the inner panel of the slide door 41 with bolts 56.

  The lower end of the leaf spring 44 is fixed together with the wire harness 43 to a fixing portion 55 on the lower side of the front end of the protector 42, and a synthetic resin support 49 attached to the distal end side of the leaf spring 44 makes the wire harness 43 slidable. I support it.

  The wire harness 43 is configured by covering a plurality of electric wires 43a with a corrugated tube made of synthetic resin, and the front end lower portion of the corrugated tube is fixed to the protector 42 by tape winding or the like. The corrugated tube alternately has circumferential grooves and ridges and exhibits good flexibility.

  One electric wire portion 43a of the wire harness 43 is led out from the front portion of the protector 42 and connected to an auxiliary machine on the slide door side. The other corrugated tube portion of the wire harness 43 is routed in a swingable manner from the elongated lower opening 45 of the protector 42 to the harness clamp 53 on the step 48 side of the vehicle body 47 through the crossing space 46 (FIG. 10). The wire portion (not shown) is connected via a harness clamp 53 to a wire harness (not shown) on the vehicle body side. The protector 42 is covered and hidden by a synthetic resin door trim (not shown), and the wire harness 43 is led out to the vehicle body side from the opening at the lower end of the door trim.

  In the transition space 46 (FIG. 10), the electric wire 43a in the wire harness 43 is protected from interference with the outside by a corrugated tube having a relatively high rigidity and a high waterproof property. The harness clamp 53 is an inner inner clamp that absorbs the twist when the wire harness 43 swings as the slide door 41 opens and closes.

  FIG. 9 shows a fully closed state of the slide door 41, and FIG. 10 shows a state in which the slide door 41 is almost fully open. The slide door 41 faces outward from the vehicle body 47 along a guide rail (not shown) on the vehicle body side at the initial opening. It moves backward while separating.

When the slide door 41 is fully closed, the wire harness 43 is pulled rearward with the harness clamp 53 as a fulcrum, and when the slide door 41 is fully opened, the wire harness 43 is similarly pulled forward. The wire harness 43 tries to hang down when the sliding door 41 is in the half-open state, but is urged upward by the leaf spring 44 to absorb the slack (excess length) and is pinched between the sliding door 41 and the vehicle body 47 due to the sag. Is prevented.
JP 2002-199558 A (FIGS. 4 to 5) JP 2002-17032 A (FIGS. 4 to 5)

  However, in the conventional power supply harness clamps 62 and 82 of FIGS. 7 and 8, when the wire harness 43 (FIG. 9) swings as the slide door 41 opens and closes, In order for the outer peripheral surface to slidably contact with the tip portions 80a and 81a of the receiving walls 80 and 81 on the lower side in a narrow range (the sliding contact portion is indicated by reference numeral 76 in FIG. 8), the protective tube 22 on the outer periphery of the wire harness is provided. There was a concern that it may be worn locally or the wear may progress to cause perforation or abnormal noise.

  Further, in FIG. 8, the wire harness is easily bent downward from the front end 81a of the receiving wall 81 on the short guide wall 70 side, and in this case, the wire harness is hooked on the front end 81a of the receiving wall 81 so that the swinging is performed smoothly. There was a concern that the protection tube 22 may disappear or wear of the protective tube 22 may progress.

  The above-mentioned concern is not limited to the automobile slide door 41, and may also occur when the power feeding apparatus including the power feeding harness clamp is applied to a sliding door of a vehicle other than the automobile, a sliding door of a processing apparatus, an inspection apparatus, or the like. is there. The sliding door is collectively referred to as a sliding structure, and the vehicle body and the apparatus main body are collectively referred to as a fixed structure. The power supply harness clamps 62 and 82 are also referred to as power supply harness fixtures.

In view of the above facts, and an object thereof is to provide a power supply harness clamp that can reliably prevent wear and bending, etc. of the wire harness with the swinging of the wire harness.

In order to achieve the above object, a power supply harness clamp according to a first aspect of the present invention includes a harness swing guide portion that allows a wire harness to be inserted and held on the inner side and supports the wire harness to be swingable on a distal end side. In the power supply harness clamp that is attached to the vehicle body and routed to the slide door , the harness swing guide portion is a long protruding guide wall located in the sliding door opening direction. When the short projecting guide wall on the other side which is positioned in the sliding door closing direction, the lower side of the receiving wall and the upper wall portion is provided to extend from the lower side of the receiving wall in the harness extending direction, the one One side portion that is configured by a guide wall on the side and the other side and an extension wall portion that protrudes in the harness lead-out direction from the upper wall portion, and the extension wall portion protrudes short from the guide wall on the one side And the And a other side projecting longer from the side of the guide wall, the projecting tip of the extension wall portion, the so shifted during swinging of the wire harness the point of contact with the wire harness, of the upper wall portion The tip is positioned so as to gradually increase the protruding length from the one side to the other side, and the wire harness can be slidably supported by the protruding tip and the other side. It is characterized by.

  With the above configuration, when the wire harness is swung, the wire harness is slidably contacted along the extended wall portion of the receiving wall, and the tip of the extended wall portion is sequentially slidably contacted along the lower surface of the wire harness. Thereby, it is prevented that a wire harness contacts a receiving wall at one point, and the extreme wear of a wire harness is prevented.

  With the above configuration, the wire harness is reliably prevented from bending downward on the short guide wall side by the extended wall portion protruding long on the short guide wall side, and the swing of the wire harness is smoothly performed without being caught.

With the configuration described above, the wire harness swings with the feeding harness clamp as a fulcrum as the slide door moves forward and backward, and the same effect as described above is achieved. It is preferable to absorb the extra length of the wire harness on the slide door side. Absorption of the extra harness length is performed by bending the wire harness or swinging it in a pendulum manner.

  According to the first aspect of the present invention, the sliding contact range when the wire harness swings is expanded by the extension wall portion of the receiving wall, so that local wear of the wire harness is prevented, and the wire harness is damaged or caught. This eliminates concerns about noise and abnormal noise, and improves the reliability of power supply.

In addition, the wire harness can be prevented from bending downward on the short guide wall side reliably with the long extension wall, and the swinging of the wire harness can be performed smoothly without catching, improving the reliability of power feeding and harness absorption To do.

Further, as the slide door is advanced and retracted with respect to the vehicle body , the wire harness swings with the power supply harness clamp as a fulcrum, and the same effect as described above is exhibited when swinging.

  1 to 3 show an embodiment of a power supply harness clamp according to the present invention.

  As shown in FIG. 1, the power supply harness clamp 1 is provided with a synthetic resin as a material, an outer clamp 2 formed in a rectangular cylindrical shape, and a circumferentially rotatable inner side of a longitudinal intermediate portion of the outer clamp 2. And a substantially spherical inner clamp 3.

  Then, on the front end (tip) side of the outer clamp 2, curved vertical guide walls 4 and 5 having different left and right lengths, a horizontal upper wall portion 6, and a horizontal lower receiving wall 7 are cross-sectioned. A rectangular annular ring is integrally formed, and a lower receiving wall 7 is integrally formed with an extension wall portion (receiving wall extension portion) 8 extending horizontally forward, and this extension wall portion 8 is formed as an upper wall portion. 6, the front end 6a protrudes from the long guide wall 4 on one side to the short guide wall 5 on the other side (protrusively forward).

In this example, the distance L from the front end center of the inner clamp 3 to the tip of the extension wall portion 8 (the front end 8a or side edge 8b) is a distance along the long guide wall 4 in FIG. 1 L _1, the short guide wall 5 the distance along L _4, when the distance of the distance to the center position of the front end 8a of the extension wall portion 8 to L _2, short guide wall 5 side at the front corner 8c protruding maximum extension wall portion 8 and L ₃ , L ₁ , L ₂ and L ₄ are approximately the same, and L ₃ is the maximum. The position of the distance L ₂ substantially coincides with the axis of the harness swing guide portion 9. The axis of the harness swing guide portion 9 is substantially orthogonal to the front end 6 a of the upper wall portion 6.

  The short guide wall 5 is curved with a small radius and a large opening angle on the right side in FIG. 1, and the long guide wall 5 is curved with a large radius and a small opening angle on the left side in FIG. The guide walls 4 and 5 may be inclined (tapered) instead of curved. In this case, the short guide wall 5 is inclined at a large opening angle, and the long guide wall 4 is inclined at a small opening angle. .

  The front end 6a of the upper wall portion 6 is inclined downward to the right in FIG. 1 from the front end of the long guide wall 4 to the front end of the short guide wall 5 with respect to the axial center line (longitudinal direction) of the outer clamp 2, It has a shape that intersects the line in an inclined manner. The front end 8 a of the extension wall portion 8 extends in a direction substantially orthogonal to the axial center line of the outer clamp 2. One side 8c of the extension wall 8 protrudes forward from the front end of the long guide wall 4 and the other side 8b of the extension wall 8 protrudes forward from the front end of the short guide wall 5. Both side portions 8b and 8c of the extension wall portion 8 are opened (opened) to the outside in the horizontal direction.

  The extension wall portion 8 projecting forward from the front end 6 a of the upper wall portion 6 is formed in a substantially right triangle shape, and the base of this triangle corresponds to the other side portion 8 b of the extension wall portion 8. It is preferable that the extension wall portion 8 and the receiving wall 7 continue flat on the same surface without a step.

  The left and right guide walls 4 and 5, the upper wall portion 6, the lower receiving wall 7 and the extension wall portion 8 constitute a harness swing guide portion 9. Subsequent to the swing guide portion 9, an inner housing portion 23 having a substantially rectangular tube shape (which may be cylindrical) for housing the inner clamp 3 is integrally formed in the longitudinal direction (harness insertion direction). A rectangular cylindrical cover 24 that restricts the direction in which the wire harness 13 (FIG. 2) is led out is integrally formed. A plate-like harness fixing portion 25 for fixing the wire harness 13 by tape winding or band fastening is formed at the rear end of the cover portion 24.

  A fixing bracket 26 protrudes left and right and is integrally formed on the lower side of the inner housing portion 23 or in the vicinity thereof, and the bracket 26 has holes 26a and 26b through which positioning pins and bolts are inserted on both sides.

  As shown in FIG. 2, the wire harness 13 swings left and right along the swing guide portion 9 of the power supply harness clamp 1. At this time, the front end 8a of the extension wall portion 8 of the lower receiving wall 7 is a wire. Since the harness 13 is inclined with respect to the center line of the swing angle, the lower surface of the wire harness 13 is positioned on the front end 8a and the side end 8b of the extension wall 8 at different positions in the longitudinal direction of the harness (a wide range in the longitudinal direction). (Sliding contact portion is indicated by reference numeral 20). As a result, local wear of the wire harness 13 is reliably prevented, and perforation of the protective tube such as the corrugated tube on the outer periphery, catching, generation of abnormal noise, and the like are reliably prevented.

  Since the wire harness 13 pivots in the circumferential direction integrally with the inner clamp 3 while swinging, the sliding contact portion 20 is dispersed almost all around, and the wear of the wire harness 13 is further reliably prevented. Of course, it is possible to rotate in the circumferential direction with the conventional harness clamp 62 or the like without using the inner clamp 3. In addition, it goes without saying that, even in a harness clamp (not shown) that fixes the wire harness 13 in a stationary manner in the circumferential direction, the use of the extension wall 8 reliably prevents the wear of the wire harness 13 as described above. Yes.

  Moreover, since the wire harness 13 is stably supported in a wide area by the extended wall portion 8 protruding longer than the long guide wall 4 side on the short guide wall 5 side, the downward bending of the wire harness 13 is reliably prevented. In addition, problems such as catching of the wire harness 13 and accompanying swinging deterioration and accelerated wear are reliably prevented. In FIG. 2, for convenience of explanation, a state in which the wire harness 13 swings to the left and right is shown at the same time (actually, it is only a state in which the wire harness 13 has moved to either the left or right).

  As shown in FIG. 3, the wire harness 13 led out from the swing guide portion 9 of the power supply harness clamp 1 is accommodated in a protector 11 made of, for example, a synthetic resin, and the extra length is absorbed in the protector. The wire harness 13 is led out in a direction substantially perpendicular to the clamp axis direction along the guide wall 5 with a small bending radius, and at an angle slightly inclined with respect to the clamp axis direction along the long guide wall 4 with a large bending radius. It is derived by protruding greatly outward.

  The form of FIG. 3 is not limited to the case where the protector 11 is mounted on a slide door of an automobile, but also includes the case where the protector 11 is mounted on a slide door (slide structure) such as another vehicle, a processing apparatus, or an inspection apparatus. Yes. The harness clamp 1 is not limited to the vehicle body, but includes a case where it is mounted on another apparatus main body (fixed structure).

  4 to 5 show an example in which the protector 11 is mounted on a sliding door of an automobile. 4 shows the fully closed state of the slide door 41, and FIG. 5 shows the fully opened state of the slide door 41. The sliding door 41 moves and closes in front of the vehicle, moves and opens rearward of the vehicle, and is separated outward from the vehicle body 47 at the initial opening.

  The power supply harness clamp 1 is disposed in the stepped wall portion 48a on the rear side at the step portion 48 of the entrance / exit of the vehicle body 47, and the stepped wall portion 48a is covered with a synthetic resin scuff plate on the step portion. ing. The harness clamp 1 is arranged in a direction substantially orthogonal to the sliding door 41, the short guide wall 5 is located on the vehicle front side, and the long guide wall 4 is located on the vehicle rear side. The direction of the harness clamp 1 will be described in accordance with the direction of the vehicle.

  When the sliding door 41 of FIG. 4 is fully closed, the wire harness 13 is led forward in a curved shape along the short guide wall 5 from the harness clamp 1, and is installed in the vertical (vertical) protector 11 on the sliding door side. It is introduced from the rear end side of the elongated lower opening 15, and is urged (supported) upward by a leaf spring (elastic member) 14 while being bent in a half loop shape within the protector 11, and together with the leaf spring, on the rear side of the protector. It is fixed (the fixed portion is indicated by reference numeral 12), led out to the slide door side from the opening 27 on the upper rear end, and connected to each auxiliary machine in the slide door. Even if the leaf spring 14 is removed, it can be restored to some extent by the elastic force of the wire harness 13.

  When the sliding door 41 of FIG. 5 is fully opened, the wire harness 13 is led obliquely rearward from the harness clamp 1 along the long guide wall 4 and introduced from the front end side of the long lower opening 15 of the protector 11. The plate spring 14 is urged (supported) upward while being bent into an arcuate mountain shape. The protector 11, the leaf spring 14, and the harness clamp 1 constitute a power feeding device 10.

  As described above, the wire harness 13 swings back and forth along the swing guide portion 9 of the harness clamp 1 as the slide door 41 is opened and closed, and at this time, the receiving wall 7 between the guide walls 4 and 5. Further, the wire harness 13 is in contact with a wide area and is stably supported by the extended wall portion 8 continuing on the same surface, and the wire harness 13 is in contact with the front end 8a and the side end 8b of the extended wall portion 8. Since the position changes greatly during the swinging process, local wear of the wire harness 13 is reliably prevented.

  The protector 11 is composed of a protector base made of a synthetic resin and a protector cover. Although the shape and the wiring direction of the wire harness 13 are different from those of the conventional protector 42 (FIG. 9), the principle of extra length absorption is almost the same. Of course, it is possible to apply the harness clamp to a power feeding structure using the conventional protector 42. The protector 11 of this example is intended to be miniaturized.

  In the above embodiment, since the slide door 41 moves with a curved path rather than a straight line, the lengths of the guide walls 4 and 5 of the power supply harness clamp 1 are different on the left and right sides. For the moving slide structure, both guide walls having the same length are used, and the extension wall portion (8) is placed on the lower receiving wall (7) between the two guide walls with respect to the center line between the two guide walls. By forming the front end to be inclined so as to cross diagonally, the same operational effects as in the above embodiment can be obtained.

  Moreover, in the said embodiment, although the harness clamp 1 for electric power feeding was arrange | positioned at the vehicle body side, the protector 11 is arrange | positioned horizontally (horizontal) at the vehicle body 47 side, for example, and the harness clamp 1 is arrange | positioned at the slide door 41 side. It is also possible to do. It is publicly known to arrange the protector (11) on the vehicle body side (for example, described in FIG. 15 of JP-A-2001-354085).

  Further, the protector 11 is not limited to a substantially semicircular shape, and for example, a protector 11 that winds and accommodates the wire harness 13 in a circular case with the force of a winding spring (not shown) is used. Is also possible. It is also possible to absorb the extra harness length by swinging the wire harness 13 like a pendulum in the protector. Further, a recess (not shown) formed in the door inner panel or door trim without using the protector 11 can be used as a protector.

  Moreover, in the said embodiment, although the front-end | tip 8a, 8b of the extension wall part 8 of the harness clamp 1 was formed in the same surface as the extension wall part 8, the front-end | tip part of the extension wall part 8 curves downward substantially in the shape of a bowl, for example. It is also effective to form and prevent the tip of the extension wall portion 8 from contacting the wire harness 13 at the edge. In this case, the tip of the extension wall portion 8 refers to a tip portion that is in contact with the wire harness 13 (on the same plane as the extension wall portion 8).

  Moreover, in the said embodiment, although the front end 8a and the side end 8b of the extension wall part 8 were formed inclining linearly, these 8a and 8b are formed inclining in the shape of a curve (arc shape or curve shape). It is also possible.

It is a top view which shows one Embodiment of the harness clamp for electric power feeding which concerns on this invention. It is a top view which similarly shows the state which wired the wire harness to the harness clamp (The wire harness has shown the state rock | fluctuated right and left). It is a cross-sectional view which shows one Embodiment of the electric power feeding structure using the harness clamp for electric power feeding. It is a perspective view at the time of a sliding door full closure which shows an example of the electric power feeding structure which applied the harness clamp to the electric power feeder for slide doors. It is a perspective view at the time of a sliding door full open in a feed structure similarly. It is a disassembled perspective view which shows one form of the conventional harness clamp. It is a top view which similarly shows the conventional harness clamp. It is a top view which shows the other form of the conventional harness clamp. It is a perspective view at the time of a sliding door full closure which shows the electric power feeding structure which applied the conventional harness clamp to the electric power feeder for slide doors. FIG. 6 is a perspective view of the power feeding structure in the vicinity of a fully open slide door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply harness clamp 4 Long guide wall 5 Short guide wall 7 Receiving wall 8 Extension wall part 8a, 8b Tip 9 Harness swing guide part 13 Wire harness 41 Sliding door (slide structure)
47 Vehicle body (fixed structure)

Claims (1)

A wire harness is inserted and held inside, and has a harness swing guide part that swingably supports the wire harness on the tip side, and is attached to the vehicle body, and the wire harness is routed to the sliding door Harness clamp for
The harness swing guide portion includes a long protruding guide wall on one side positioned in the sliding door opening direction, a short protruding guide wall on the other side positioned in the sliding door closing direction , a lower receiving wall and an upper receiving wall. A wall portion, an extension wall portion provided extending in the harness lead-out direction from the lower receiving wall, and projecting in the harness lead-out direction from the one and other guide walls and the upper wall portion; The extension wall portion has one side portion that protrudes short from the guide wall on the one side and the other side portion that protrudes long from the guide wall on the other side, and the protruding tip of the extension wall portion but to shift the point of contact with the wire harness when the swinging of the wire harness, to the distal end of the upper wall portion, so as to increase gradually protruding length toward the other side from the one side and positioned obliquely, projecting sliding the wire harness at the tip and said other side Feeding harness clamp, which is a supportable.

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