JP5294390B2 - Wiring harness wiring structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a routing structure for a wire harness, which reduces a cost and space by reducing the number of components to be used and simplifying the structure of the components. <P>SOLUTION: An extension portion 13c of a wire harness between a fixed-side connecting section to be fixed to a fixed structure 3 and a moving-side connecting section to be fixed to a movable structure 5 is assisted with a belt-like leaf spring 27 and is routed so as to be bent in a nearly U-shape or in a circular arc shape. An abnormal displacement of the extension portion 13c is regulated during movement of the movable structure by the belt-like leaf spring 27, the number of components to be used can be reduced and the structure of the components can be simplified, resulting in space reduction. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention straddles between a fixed structure and a movable structure, in which the movable structure is movably mounted, for example, in order to supply power to an electric part on the movable structure such as an automobile sliding door and hatchback door. The present invention relates to a wiring structure of a wired wiring harness.

  For example, wire harnesses that feed electric parts on movable structures such as sliding doors and hatchback doors among wire harnesses that are routed in automobiles, such as body frames in which the movable structures are movably equipped Between the fixed structure and the movable structure.

11 and 12 show a conventional example of the wiring structure of such a wire harness.
The routing structure shown in FIG. 11 is disclosed in Patent Document 1 below. The wire harness 101 to be routed includes, for example, a fixed-side connection portion 103 fixed on a fixed-side structure such as a vehicle body panel or a vehicle body frame, and a movable-side connection portion 105 fixed on a movable structure such as a slide door. The extension portion 107 is provided with a surplus length for allowing the movement of the movable structure, and the extension portion 107 is bent in a substantially U shape and is a harness below the guide rail 111. By accommodating in the accommodation space 113, the abnormal displacement of the extension portion 107 accompanying the movement of the movable structure is restricted, and at the same time, the extension portion 107 is prevented from interfering with surrounding structures and the like.

The guide rail 111 has a slider 115 that slides along a moving direction (in the direction of arrow A in FIG. 11) of a movable structure (not shown), and an extended portion 107 that is accommodated in the harness accommodating space 113. The movable side connecting portion 105 side is coupled to the slider 115.
The slider 115 is connected to the movable structure and moves on the guide rail 111 in conjunction with the movement of the movable structure.

  In the case of the routing structure shown in FIG. 12, the extended portion 107 provided between the fixed side connecting portion 103 and the movable side connecting portion 105 of the wire harness 101 to be routed can be pulled out into the harness housing box 121. By winding and accommodating, the abnormal displacement of the extension portion 107 accompanying the movement of the movable structure is restricted, and at the same time, the extension portion 107 is prevented from interfering with surrounding structures and the like.

  The harness storage box 121 includes a reel that is rotatably provided in the box main body 123 and winds the extended portion 107, and a biasing means such as a spring that biases the reel in the winding direction, and is movable. As the reel rotates according to the amount of movement of the structure, the extension length of the extension 107 from the box body 123 is adjusted.

JP 2006-74980 A

However, since the conventional routing structures shown in FIG. 11 and FIG. 12 both have the guide rail 111 and the harness storage box 121 that store the extended portion 107, the number of components is greatly increased, and Since the guide rails 111 and the harness housing box 121 have a complicated configuration, there is a problem in that the cost of an apparatus that employs these wiring structures is increased.
In addition, due to the structure of the guide rail 111 and the harness housing box 121 that cover the periphery of the extension portion 107, there is a problem that the wiring space increases and it is difficult to save space.

  An object of the present invention is to eliminate the above-mentioned problems, and to reduce the number of parts used for wiring a wiring harness and simplify the structure of the parts used, thereby reducing the cost of a device that employs the wiring structure. Another object of the present invention is to provide a wiring structure for a wire harness that can be realized and can save space by suppressing an increase in the wiring space due to used parts.

The above object of the present invention is achieved by the following configurations.
(1) A movable-side coupling portion fixed to a movable structure that is provided on one end side in the electric wire extension direction and fixed to the stationary structure and is movably mounted on the stationary structure. An electric wire provided on the other end side in the electric wire extension direction is provided, and an extra length for allowing movement of the movable structure is given to an extended portion between the fixed side connecting portion and the movable side connecting portion of the electric wire. The wiring structure of the wired harness,
The extension part is wired in a form in which a belt-like leaf spring is attached along the extension direction of the extension part and is bent in a substantially U shape or arc shape, and the extension accompanying the movement of the movable structure The abnormal displacement of the part is regulated by the strip-shaped leaf spring,
At least one of a first connecting member for fixing the movable side connecting portion to the movable structure or a second connecting member for fixing the fixed side connecting portion to the fixed structure is further provided, and the first connecting member or With respect to the axis along the moving direction of the movable structure, the depressing force that suppresses the arcuate swelling of the portion of the extension portion on the movable side connecting portion side is applied to at least one of the second connecting members. A wiring harness wiring structure comprising an inclined gripping portion inclined toward the extension portion.

(2) A fixed-side connecting portion fixed to the fixed structure is provided on one end side in the electric wire extending direction, and a movable-side connecting portion fixed to the movable structure that is movably mounted on the fixed structure is provided. An electric wire provided on the other end side in the electric wire extension direction is provided, and an extra length for allowing movement of the movable structure is given to an extended portion between the fixed side connecting portion and the movable side connecting portion of the electric wire. The wiring structure of the wired harness,
The extension part is wired in a form in which a belt-like leaf spring is attached along the extension direction of the extension part and is bent in a substantially U shape or arc shape, and the extension accompanying the movement of the movable structure The abnormal displacement of the part is regulated by the strip-shaped leaf spring,
At least one of a first connecting member that fixes the movable side connecting portion to the movable structure or a second connecting member that fixes the fixed side connecting portion to the fixed structure is further provided, and the connecting member includes the extension member. The movable structure or the fixed structure in a posture inclined to the extension portion side with respect to an axis along the moving direction of the movable structure in a direction that relaxes the degree of bending of the portion near the movable side connecting portion . The wiring structure of the wire harness characterized by being attached to the wire.
(3) The second connecting member is a fixed protector provided with a groove toward the movable structure side,
(1) or (2), wherein the fixed structure is a door panel of an automobile door, and the movable structure is a window glass movably mounted on the door panel so as to move up and down. The wiring structure of the wire harness described in).

  According to the configuration of (1) above, abnormal displacement such as flapping of the extended portion of the wire harness accompanying the movement of the movable structure is regulated by the action of the rigidity and elastic force of the strip leaf spring attached to the extended portion. Compared with the conventional routing structure that used guide rails and harness housing boxes to regulate abnormal displacement of the extension part, the number of parts to be used can be greatly reduced, The structure of the parts used can be simplified. Therefore, it is possible to reduce the cost of an apparatus that employs the routing structure.

  In addition, the increase in the wiring space due to the strip-shaped leaf spring that restricts the abnormal displacement of the extension portion may be such that a margin about the thickness of the strip-like leaf spring is provided outside the path of the extension portion of the wire harness. Compared to a conventional routing structure that uses a guide rail or harness housing box that covers the periphery of the cable, an increase in the routing space can be suppressed and space saving can be realized.

According to the configuration of (1) above, when the arcuate curved portion of the extension portion moves near the movable side connecting portion or near the fixed side connecting portion as the movable structure moves, the wire harness is extended. Since the inclined gripping part prevents an increase in the arcuate bulge of the curved part due to the bending rigidity of the part, it is possible to prevent the extension part from interfering with surrounding structures due to an increase in the arcuate bulge of the curved part The wire harness can be prevented from being damaged by rubbing of the curved portion, and the durability of the wire harness can be improved. In addition, by preventing an increase in the arcuate bulge of the curved portion of the extended portion, it is not necessary to secure an empty space for preventing interference outside the curved portion, thereby promoting space saving. Can do.

According to the configuration of (2) above , even when the arcuate curved portion of the extension portion moves near the movable side connecting portion or near the fixed side connecting portion as the movable structure moves, the inclination angle of the connecting member Thus, it is possible to prevent the bending degree of the wire harness from being increased in the bending portion, to prevent fatigue damage of the wire harness due to repeated bending due to an excessive bending degree, and to improve the durability of the wire harness.

  According to the structure of the wire harness according to the present invention, the part for regulating the abnormal displacement of the extension portion of the wire harness is a strip-shaped leaf spring attached to the extension portion, so that the guide rail can be used to regulate the abnormal displacement of the extension portion. Compared with the conventional wiring structure that used a harness housing box, the number of parts used can be greatly reduced, and at the same time, the structure of the used parts can be simplified, and the equipment adopting the wiring structure The cost can be reduced.

  In addition, the increase in the wiring space due to the strip-shaped leaf spring that restricts the abnormal displacement of the extension portion may be such that a margin about the thickness of the strip-like leaf spring is provided outside the path of the extension portion of the wire harness. Compared to a conventional routing structure that uses a guide rail or harness housing box that covers the periphery of the cable, an increase in the routing space can be suppressed and space saving can be realized.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a wiring structure for a wire harness according to the invention will be described in detail with reference to the drawings.

  1 is a side view of an automobile in which an embodiment of a wiring harness wiring structure according to the present invention is adopted, FIG. 2 is a front view of the back door of the automobile shown in FIG. 1, and FIG. B sectional view and FIG. 4 are CC sectional views of FIG. FIG. 5 is an explanatory diagram of a situation in which the curved portion of the extended portion of the wire harness moves as the window glass which is a movable structure moves up and down in the wiring structure of the wire harness shown in FIG. 4, and FIG. It is an enlarged view of the principal part of the wiring structure of the shown wire harness. 7 is an external view of the wire harness in a state where an exterior member covering the periphery of the wire harness is removed from the wiring structure of the wire harness shown in FIG. 6, and FIG. 8 is an external view of the wire harness shown in FIG. It is a principal part enlarged view.

  The automobile 1 shown in FIG. 1 includes a back door 3 that pivots upward and opens. And the back door 3 is equipped with the window glass 5 which goes up and down in the up-down direction (arrow D direction of FIG. 3). The window glass 5 is provided with an electrical component 7 such as a heating wire for preventing fogging.

  The wiring harness wiring structure 11 according to an embodiment of the present invention moves to the door panel 3a of the back door 3 corresponding to a fixed structure and the door panel 3a for feeding power to the electrical component 7 and the like on the window glass 5. The wire harness assembly 13 is routed across the window glass 5 corresponding to the movable structure equipped as possible.

The window glass 5 is attached to the door panel 3a so as to be movable up and down in a direction indicated by an arrow E in FIG. In FIG. 5, reference numeral 5A indicates the window glass moved to the upper limit position, reference numeral 5B indicates the window glass when the window is half-opened by moving to the intermediate position, and reference numeral 5C indicates the window glass moved to the lower limit position. The window glass when fully opened is shown.
As shown in FIG. 5, as the window glass 5 moves up and down, the curved position of the extended portion 13 c of the wire harness assembly 13 that is routed across the door panel 3 a and the window glass 5 moves.

  In the case of the present embodiment, a fixed-side protector 21 is fixedly installed on the inner surface side of the door panel 3a along the vertical direction at the side of the window glass 5. The fixed side protector 21 corresponds to a fixed structure together with the door panel 3a.

  The fixed-side protector 21 uses, for example, a channel-type die-cutting material, and is equipped with a groove directed toward the window glass 5, and a wire harness assembly that hangs down from the door panel 3 a side when the window glass 5 is lowered. 13 is accommodated and the position of the hanging wire harness assembly 13 is regulated.

  As shown in FIG. 6, the wire harness assembly 13 used in the wiring harness wiring structure 11 of this embodiment is fixed on the fixed protector 21 of the door panel 3a which is a fixed structure. A surplus length for allowing the window glass 5 to move up and down is given to an extended portion 13c between the connecting portion 13a and the movable side connecting portion 13b fixed on the window glass 5 which is a movable structure. .

  The fixed side connecting portion 13a of the wire harness assembly 13 is attached to a fixed side protector 21 fixed to the door panel 3a by a binding band 23. The fixed side protector 21 is fixed on the door panel 3a by a screw or the like that passes through the fixing hole 21a.

  A movable side protector 25, which is a connecting member for fixing to the window glass 5, is attached to the movable side connecting portion 13 b by a binding band 23. The movable side protector 25 is fixed to the window glass 5 with a screw or the like inserted through the fixing hole 25a.

  In the wire harness assembly 13, the extended portion 13c between the fixed side connecting portion 13a and the movable side connecting portion 13b has a strip-like plate on the electric wire group 31 constituting the extended portion 13c, as shown in FIGS. The spring 27 is vertically attached, and the outer periphery of the spring 27 is covered with a tape or a tube-shaped exterior member 29. The belt-like leaf springs 27 vertically attached to the electric wire group 31 are fixed to the electric wire group 31 at appropriate intervals by a binding means 33 such as tape winding.

  As shown in FIGS. 4 and 5, the wire harness assembly 13 is arranged in a form in which the extension portion 13 c is bent in a substantially U shape or arc shape, and moves up and down the window glass 5 that is a movable structure. The displacement of the extension portion 13 c is restricted by the strip-shaped leaf spring 27. Accordingly, the wire harness does not flutter in the width direction due to the rigidity of the belt-shaped leaf spring 27, and the wire harness does not flutter in the vertical direction because tension is always applied by the elastic force of the belt-shaped leaf spring 27.

  In the case of the wiring harness wiring structure 11 according to the embodiment described above, the displacement of the extension portion 13c of the wire harness accompanying the movement of the window glass 5 is restricted by the belt-like leaf spring 27 vertically attached to the extension portion 13c. Compared with the conventional wiring structure that uses guide rails and harness housing boxes to regulate the displacement of the extension part, the number of parts used can be greatly reduced and the structure of the parts used Can be simplified. Therefore, it is possible to reduce the cost of an apparatus that employs the routing structure.

  Further, the increase in the wiring space by the strip-shaped leaf spring 27 that restricts the displacement of the extension portion 13c may be such that a margin of the thickness of the strip-shaped leaf spring 27 is provided outside the path of the extension portion 13c of the wire harness. Compared with a conventional wiring structure that uses a guide rail or a harness housing box that covers the periphery of the extension portion, an increase in the wiring space can be suppressed and space saving can be realized.

  In addition, as a standard structure of the movable side protector 25, as shown to Fig.9 (a), the holding part 25a which fixes the movable side connection part 13b of the extension part 13c is perpendicular | vertical along the raising / lowering direction of the window glass 5. As shown in FIG. A structure that supports the movable side connecting portion 13b along the axis y is conceivable.

  However, in the movable side protector 25 having such a structure, as shown in FIG. 9A, the arcuate curved portion M of the extended portion 13c is brought near the movable side connecting portion 13b as the window glass 5 moves downward. When moved, the arcuate bulge of the bending portion M increases in a direction exceeding the vertical axis y due to the bending rigidity of the extension portion 13c of the wire harness, so that an extra wiring is provided for the distance L1 at which the arcuate bulge increases. Space must be reserved. If a wiring space corresponding to the distance L1 is not secured, the curved portion M with increased bulge interferes with surrounding structures and is damaged, or the window glass 5 is caused by interference of the curved portion M. There is a risk of hindering the descent operation.

Therefore, in this embodiment, the movable side protector 25 having the structure shown in FIG. 9B is used.
The movable side protector 25 shown in FIG. 9B is a movable side in a state where it is inclined by an angle α with respect to the vertical axis y along the ascending / descending direction of the window glass 5 as a gripping part for fixing the movable side connecting portion 13b. An inclined gripping portion 25b that supports the connecting portion 13b is provided.

  The inclined gripping portion 25b acts on the movable side connecting portion 13b with a deterring force that suppresses the arcuate bulge of the extending portion 13c. As a result, as shown in FIG. It becomes possible to restrict the arcuate bulge to a position retracted from the vertical axis y by a distance L2.

  In other words, the movable side protector 25 shown in FIG. 9B is provided with an inclined gripping portion 25b that applies a deterring force that suppresses the arcuate bulge of the extended portion 13c to the movable side connecting portion 13b. is there.

  When the movable side protector 25 provided with the inclined gripping portion 25b is used, when the arcuate curved portion of the extended portion 13c moves to the vicinity of the movable side connecting portion 13b as the window glass 5 moves downward, the wire harness Since the inclined gripping portion 25b prevents the arcuate bulge of the curved portion from increasing beyond the vertical axis y due to the bending rigidity of the extended portion 13c, the extended portion 13c is increased by the increase in the bulge of the arc of the curved portion M. Interference with surrounding structures can be prevented, the wire harness can be prevented from being damaged by rubbing of the bending portion M, and the durability of the wire harness can be improved.

  Further, by preventing an increase in the arcuate bulge of the curved portion M of the extended portion 13c, it is not necessary to secure an empty space for preventing interference outside the curved portion M, thereby promoting space saving. can do.

  Furthermore, as a standard mounting posture of the movable side protector 25 to the window glass 5, the movable side connecting portion 13b is fixed along the vertical direction along the ascending / descending direction of the window glass 5 as shown in FIG. As described above, an attachment posture in which the attachment reference surface f of the movable protector 25 is set to be vertical is conceivable.

  However, in such an attachment posture, when the arcuate curved portion M of the extension portion 13c moves to the vicinity of the movable side connecting portion 13b as the window glass 5 moves downward, the bending R in the vicinity of the movable side connecting portion 13b. Rapid bending with a small (bending radius) occurs, and fatigue damage may occur in the wire harness due to repeated bending by an excessive bending R.

  Therefore, it is desirable that the movable protector 25 is attached to the window glass 5 in an attachment posture as shown in FIG.

  The movable protector 25 shown in FIG. 10B has a posture in which the attachment reference surface f is inclined by an angle β in a direction in which the bending R in the vicinity of the movable side connecting portion 13b is relaxed (direction in which the degree of bending is reduced). It is attached to the window glass.

  10B, even when the arcuate curved portion of the extended portion 13c moves to the vicinity of the movable side connecting portion 13b as the window glass 5 moves downward, the movable side protector 25 is inclined. The angle β can prevent the bending R of the wire harness at the bending portion M from becoming excessively small, prevent fatigue damage of the wire harness due to repeated bending by the excessive bending R, and improve the durability of the wire harness. Can do. Further, similarly to the case shown in FIG. 9B, a deterring force that suppresses the arcuate bulge of the bending portion M can be applied, and the arcuate bulge is restricted to a position retracted inward from the vertical axis y. It becomes possible.

  In the embodiment shown in FIG. 9B, the movable side protector 25 (first connecting member) that fixes the movable side connecting portion 13b to the window glass 5 (movable structure) is attached to the arcuate shape of the curved portion M. Although it is the structure provided with the inclination holding | grip part 25b which acts on the suppression force which suppresses a swelling, the structure by which the same inclination holding part was provided in the stationary side protector 21 (2nd connection member) may be sufficient, The effect of.

  In the embodiment shown in FIG. 10B, the movable side protector 25 (first connecting member) that fixes the movable side connecting portion 13b to the window glass 5 (movable structure) is curved near the movable side connecting portion. Although it is the structure attached in the attitude | position inclined in the direction which eases the bending degree of the part M, the fixed side protector 21 (2nd connection member) is in the direction which eases the bending degree of the bending part M of the fixed side connection part vicinity. It may be a configuration that is attached in an inclined posture, and has the same effect.

  The movable structure to which power is supplied by the wire harness wiring structure according to the present invention is not limited to the liftable window glass of the automobile shown in the above embodiment. For example, the present invention can be applied to power supply to a movable structure in a slide seat seat of an automobile or various devices other than the automobile.

  In the above-described embodiment, the wire harness assembly 13 has a structure in which a strip-shaped plate spring 27 is vertically attached to the electric wire group 31 and then the outer periphery of the wire harness assembly 13 is covered with a tube-shaped exterior member 29. By selecting appropriately, durability with respect to the external force of the electric wire group 31 can be significantly improved.

  Moreover, as the strip-shaped leaf spring 27 vertically attached to the electric wire group 31, a spring steel plate material and a stainless steel plate material having both spring property and durability are usually used. For example, heat resistance such as glass epoxy material and By using a plate material made of a resin material having excellent mechanical properties, the weight can be reduced.

1 is a side view of an automobile in which an embodiment of a wiring harness wiring structure according to the present invention is adopted. It is a front view of the back door of the motor vehicle shown in FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is explanatory drawing of the condition which the curved part of the extension part of a wire harness transfers with the raising / lowering movement of the window glass which is a movable structure in the wiring structure of the wire harness shown in FIG. It is an enlarged view of the principal part of the wiring structure of the wire harness shown in FIG. It is a wire harness external view of the state which removed the exterior member covered on the circumference | surroundings of the wire harness from the wiring structure of the wire harness shown in FIG. It is a principal part enlarged view of the wire harness external view shown in FIG. (A) is a side view showing a standard structure of a connecting member for fixing the movable side connecting portion shown in FIG. 6 to a movable structure, and (b) is an explanatory view of an embodiment in which the structure of the connecting member is improved. is there. (A) is a side view showing a standard mounting posture of a connecting member for fixing the movable side connecting portion shown in FIG. 6 to the movable structure, and (b) is an improvement of the mounting posture of the connecting member to the movable structure. It is explanatory drawing of made embodiment. It is a perspective view which shows the example of the wiring structure of the conventional wire harness. It is a perspective view which shows another example of the wiring structure of the conventional wire harness.

Explanation of symbols

1 automobile 3 back door 3a door panel (fixed structure)
5 Window glass (movable structure)
DESCRIPTION OF SYMBOLS 7 Electrical component 11 Wire harness wiring structure 13 Wire harness assembly 13a Fixed side connection part 13b Movable side connection part 13c Extension part 21 Fixed side protector (2nd connection member)
23 Bundling band 25 Movable side protector (first connecting member)
25b Inclined gripping part M Bending part

Claims (3)

A fixed side connecting portion fixed to the fixed structure is provided at one end side in the electric wire extension direction, and the movable side connecting portion fixed to the movable structure movably mounted on the fixed structure is in the electric wire extension direction. A wire provided with an electric wire provided on the other end side and provided with an extra length for allowing movement of the movable structure to an extension portion between the fixed side connecting portion and the movable side connecting portion of the electric wire A harness routing structure,
The extension part is wired in a form in which a belt-like leaf spring is attached along the extension direction of the extension part and is bent in a substantially U shape or arc shape, and the extension accompanying the movement of the movable structure The abnormal displacement of the part is regulated by the strip-shaped leaf spring,
At least one of a first connecting member for fixing the movable side connecting portion to the movable structure or a second connecting member for fixing the fixed side connecting portion to the fixed structure is further provided, and the first connecting member or With respect to the axis along the moving direction of the movable structure, the depressing force that suppresses the arcuate swelling of the portion of the extension portion on the movable side connecting portion side is applied to at least one of the second connecting members. A wiring harness wiring structure comprising an inclined gripping portion inclined toward the extension portion. A fixed side connecting portion fixed to the fixed structure is provided at one end side in the electric wire extension direction, and the movable side connecting portion fixed to the movable structure movably mounted on the fixed structure is in the electric wire extension direction. A wire provided with an electric wire provided on the other end side and provided with an extra length for allowing movement of the movable structure to an extension portion between the fixed side connecting portion and the movable side connecting portion of the electric wire A harness routing structure,
The extension part is wired in a form in which a belt-like leaf spring is attached along the extension direction of the extension part and is bent in a substantially U shape or arc shape, and the extension accompanying the movement of the movable structure The abnormal displacement of the part is regulated by the strip-shaped leaf spring,
At least one of a first connecting member that fixes the movable side connecting portion to the movable structure or a second connecting member that fixes the fixed side connecting portion to the fixed structure is further provided, and the connecting member includes the extension member. The movable structure or the fixed structure in a posture inclined to the extension portion side with respect to an axis along the moving direction of the movable structure in a direction that relaxes the degree of bending of the portion near the movable side connecting portion . The wiring structure of the wire harness characterized by being attached to the wire. The second connecting member is a fixed protector provided with a groove toward the movable structure side,
The said fixed structure is a door panel of a door of an automobile, and the movable structure is a window glass that is movably mounted on the door panel so as to move up and down. Wiring harness wiring structure.

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