JP4021603B2 - Routing structure for sliding door harness - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a wire harness is routed from the vehicle body side to the slide door side so as to constantly supply power to the functional component on the slide door side, and the sliding door and the vehicle body are absorbed while absorbing the slack of the wire harness accompanying opening and closing of the slide door. It is related with the wiring structure of the harness for sliding doors which prevented the pinch | interposing of the wire harness between.
[0002]
[Prior art]
Conventionally, to supply electricity from the vehicle body side (power supply side) to each functional part of the sliding door used in one-box cars and wagon cars, and to send electric signals from the sliding door side to the vehicle body side, Various wiring arrangements for sliding door harnesses have been proposed.
[0003]
Various functional parts such as a power window motor, a door lock unit, a speaker, a switch unit, and an electronic control unit are mounted on the slide door. The power supply current and the signal current are supplied to or received from these functional components. However, not only when the sliding door is closed, but also when the sliding door is opened, it is necessary to supply and receive power.
[0004]
FIGS. 8 (a) and 8 (b) show one form of a conventional wiring structure for a sliding door harness described in JP-A-7-222274.
[0005]
In this structure, a reel 120 capable of feeding and winding an electric wire (wire harness) 119 in accordance with the opening / closing operation of the slide door 118 is provided on the vehicle body 121 side, and one end side of the electric wire 119 is provided on the door side via a hinge 122. The other end of the electric wire 119 is connected to an audio (not shown) which is a functional component on the vehicle body side.
[0006]
When the slide door 118 shown in FIG. 8A is closed, the electric wire 119 is drawn out from the reel 120 and extends. When the slide door 118 shown in FIG. 8B is opened, the electric wire 119 is wound around the reel 120. The sliding door 118 is in close contact with the vehicle body 121 while moving forward when it is closed, and is retracted while being spaced outward when it is opened. Thus, the sliding door 118 moves at least two-dimensionally.
[0007]
However, in the above structure, since the electric wire 119 must be wound around the reel 120 several times, there is a concern that the electric wire 119 is easily damaged. In addition, a wire harness having a large number of circuits (the number of electric wires) has a problem that it is difficult to apply due to poor flexibility.
[0008]
In order to solve these problems, the present applicant previously disclosed in Japanese Patent Application No. 2000-109474 that the wire harness is accommodated in the slide door in a substantially semicircular shape and is attached upward with a leaf spring. A slack absorbing device was proposed.
[0009]
When the sliding door is opened, the sliding door retracts away from the vehicle body, the wire harness in the sliding door hangs down while reducing its diameter, and when the sliding door is fully opened, the transition portion to the vehicle body is pulled forward. Further, the sliding door moves forward while approaching the vehicle body side by the closing operation of the sliding door, and the wire harness inside the sliding door expands in diameter while the crossing portion to the vehicle body is pulled backward. In this way, slack in the wire harness is absorbed.
[0010]
[Problems to be solved by the invention]
However, in the above structure, particularly when the position of the harness slack absorbing device in the slide door and the lead-out position of the wire harness from the harness slack absorbing device are lower than the wiring position of the wire harness on the vehicle body side, The wire harness is routed obliquely upward from the door to the vehicle body, and there is a concern that the wire harness is likely to be sandwiched between the slide door and the vehicle body when the slide door is closed.
[0011]
In other words, the wire harness tends to approach the step (metal panel part) of the vehicle body just before the sliding door is closed, and tends to hang down below the step. There was a concern that the wire harness might get caught between the door trim. In the unlikely event that the wire harness is sandwiched, the protection tube such as the corrugated tube that covers the wire harness may be damaged, or in the worst case, the wires constituting the wire harness may be cut. In this case, the power supply to the slide door and the signal transmission from the slide door are stopped. For example, the power window raising / lowering operation and the electric sliding door opening / closing operation are not performed.
[0012]
In addition, when the wire harness is routed obliquely upward from the sliding door to the vehicle body, there is a concern that the wire harness bends at an angle close to 90 degrees on the upper side and the lower side, and excessive stress acts on the bent portion. there were. In this case as well, the wire harness is damaged as described above, and the wire harness is not smoothly expanded and contracted when the sliding door is opened and closed.
[0013]
In view of the above points, the present invention does not cause the wire harness to be sandwiched between the slide door and the vehicle body when the slide door is closed, and the wire harness can be bent flexibly when the slide door is opened and closed or stationary. It is an object of the present invention to provide a wiring structure for a sliding door harness that can be performed and can prevent the wire harness from being damaged or deformed.
[0014]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a harness slack absorbing device on a sliding door, and accommodates the wire harness on the sliding door side in the harness slack absorbing device from the elongated opening of the harness slack absorbing device. In the wiring structure of the sliding door harness in which the wire harness is bridged over the harness fixing member on the vehicle body side so as to be swingable,
Upwardly to guiding the connecting portions of the wire harness during closing operation of the sliding door, the guide guide member having a first inclined surface facing the sliding door side is provided on said vehicle body side, the guide induction member The second inclined surface that intersects the first inclined surface and picks up the transition portion when the sliding door is closed, and the transition portion rides on the guide guide member along the first inclined surface. Thus, by being positioned higher by the thickness of the guide guide member, the crossing portion is prevented from being caught when the slide door is closed (Claim 1).
It is also effective to the guide guide member is disposed on the distal end side of the steps of said vehicle body (claim 2).
It is also effective that the guide guiding member is formed integrally with the vehicle body (Claim 3 ).
It is also effective to the wire harness in the vicinity of the guide guide member is fixed to the harness fixing member of the vehicle body side (claim 4).
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 shows an embodiment of a wiring structure for a sliding door harness according to the present invention.
[0016]
This structure is provided with the harness slack absorbing device 2 on the slide door 1 and an inclined guide in step 5 of the vehicle body 3 with respect to the wire harness 4 routed from the harness slack absorbing device 2 to the vehicle body 3 side. The guide member 6 is provided.
[0017]
The guide harness 6 guides and guides the wire harness 4 onto the step 5 when the slide door 1 is closed, thereby preventing the wire harness 4 from hanging down and being caught between the step 5 and the slide door 3.
[0018]
The harness slack absorbing device 2 is disposed on the metal panel 7 of the slide door 1 and urges the wire harness 4 upward in the protector 8 and the protector 8 made of synthetic resin curved in a substantially semicircular shape. It consists of a metal leaf spring (elastic member) 9.
[0019]
The protector 8 is fixed to the panel 7 by fixing means 10 such as bolts and locking clips, the lower end of the leaf spring 9 is fixed near the front end of the protector 8, and the upper end of the leaf spring 9 is substantially the curved portion 4 a of the wire harness 4. Located at the top. The curved portion 4a of the wire harness 4 is fixed to the leaf spring 9 by fixing means 11 such as a tape or a band. Since these structures have been proposed in Japanese Patent Application No. 2000-109474 of the prior art, detailed description thereof will be omitted.
[0020]
The protector 8 is covered with an integral or separate substantially semicircular lid (not shown), or the inner surface of a door trim (not shown) substitutes the lid. A synthetic resin door trim is fixed to the panel 7 with a locking clip (not shown), and the harness slack absorbing device 2 is hidden inside the door trim.
[0021]
The wire harness 4 is routed in a curved shape along the inner surface of the protector 8, and is led out from the front end side 8a and the rear end side 8b of the protector 8, respectively. The harness portion 4b led out from the front end side 8a of the protector 8 is connected to each functional component (not shown) such as a power window motor, a switch unit, and a speaker on the slide door side.
[0022]
The harness portion 4c led out from the rear end side 8b of the protector 8 is routed on the vehicle body side in an inclined manner as shown in FIG. 2 along the upper surface of the guide guide member 6 through the lower gap between the panel 7 and the door trim. In the vicinity of the guide guiding member 6, it is fixed to the clamp (fixing member) 12 on the step 5 and further connected to the wire harness 13 on the vehicle body side on the back side of the clamp 12 by male and female connectors 14, 15. Yes.
[0023]
For example, the clamp 12 can be divided into upper and lower parts and locked together by a locking means 16 so that a corrugated tube 17 made of, for example, a synthetic resin covering the outside of the wire harness 4 (the plurality of electric wires 18) can be rotated in the circumferential direction. Support and fix in the longitudinal direction of the harness. Instead of the clamp 12, another fixing member may be used, and instead of the corrugated tube 17, a plurality of electric wires 18 may be bound by tape winding, or another protective tube may be used. The wire harness 4 includes a plurality of electric wires 18 and these protective tubes 17 and the like.
[0024]
Step 5 of the vehicle body 3 is made of a metal plate and has a plurality of bulging portions 19 for reinforcement on the surface. The inclined guide guide member 6 is provided at the outer front end portion of the step 5. As shown in FIG. 3, the guide guiding member 6 is formed in a substantially wedge shape having at least an upward first inclined surface 20 facing the slide door.
[0025]
The first inclined surface 20 has a lowest point at the same position as the tip 5a of Step 5 (FIG. 2), rises in a taper shape in the depth direction of Step 5, and is flat at the highest point and has a narrow depth of support surface 21. Followed by The front and rear surfaces 22 and 23 (FIG. 3) and the rear surface 24 of the guide guiding member 6 rise substantially vertically.
[0026]
It is preferable that the lateral width of the guide guiding member 6 is at least equal to or greater than the outer diameter of the wire harness 4. The inclination angle of the inclined surface 20 is the height of the clamp 12 (gap between the lower surface of the wire harness 4 and the upper surface of the step 5) or the harness lead-out portion (rear end side) of the protector 8 on the slide door side in step 5 in FIG. ) It is appropriately set according to the height difference from 8b.
[0027]
As shown in FIG. 4, it is also effective to form a second inclined portion 26 that intersects the first inclined portion 20 in the guide guiding member 25. The second inclined portion 26 is located near the rear end 5b of step 5 in FIG. The first inclined portion 20 and the second inclined portion 26 are continuous via an intersection line 27.
[0028]
As shown in FIG. 5, the inclined surfaces 29 and 30 of the guide guide member 28 may be curved instead of tapered. In this specification, an inclined surface is defined as including a curved surface. In the embodiment of FIG. 5, the first inclined surface (curved surface) 29 and the second curved surface (inclined surface) 30 continue to intersect each other.
[0029]
4 and 5, the surfaces located on the opposite side of the second inclined surfaces 26 and 30 are denoted by reference numerals 23 and 31. Further, by making the depth-side surfaces 24 and 32 of the guide guiding members 6, 25 and 28 into an inclined shape (curved shape), damage to the wire harness 4 due to sliding with the wire harness 4 is also prevented. It is also possible to use a guide guide member having a shape that is substantially hemispherical or part of a substantially spherical body.
[0030]
The guide guide members 6, 25, and 28 are made of, for example, a synthetic resin and are fixed to the step 5 by means such as adhesion or bolting. Alternatively, it can be formed integrally with the metal step 5 in the same manner as the bulging portion 19 of FIG. It is also effective to bend the tip 5a of step 5 downward as shown in FIG. The guide guide member 6 is disposed near the rear end 5a of the step 5 as shown in FIG. This is because the wire harness 4 is routed on the vehicle body side near the rear end of step 5 so as not to obstruct getting on and off.
[0031]
In FIG. 1, the slide door 1 is in a state immediately before closing, and the slide door 1 and the step 5 of the vehicle body 3 are close to each other with a narrow gap 33. The wire harness 4 is pulled rearward (leftward in FIG. 1) while being curved along the inner surface of the protector 8, and in this state, the step is performed on the step 5 along the inclined surface 20 of the guide guide member 6 from the rear lead-out portion 8b. Has been routed to. Inside the protector 8, the curved portion 4 a of the wire harness 4 is urged by a leaf spring 9 in the rising direction. A synthetic resin scuff plate (not shown) is disposed above the step 5, and the wire harness 4 is routed between the step 5 and the scuff plate so as to be swingable in the front-rear direction.
[0032]
FIG. 6 shows an open state of the slide door 1 (a state immediately before full opening), and the wire harness 4 is bent forward in the protector 8 while curving to a small diameter against the elastic force of the leaf spring 9 (right side shown in FIG. 6). ), And in this state, is routed on the step 5 along the inclined surface 20 of the guide guiding member 6.
[0033]
As shown in FIG. 2, the wire harness 4 is fixed by the clamp 12 in the vicinity of the guide guide member 6 on the step 5, so that the transition portion 4 d of the wire harness 4 (the harness portion between the vehicle body 3 and the slide door 1). Is reliably picked up by the inclined surface 20 of the guide guiding member 6 and smoothly and reliably guided on the step 5.
[0034]
Even if the wire harness 4 is not fixed by the clamp 12 in the vicinity of the guide guiding member 6, the trajectory (trajectory) of the wire harness 4 accompanying opening and closing of the slide door 1 is substantially constant. If the width in the front-rear direction is set slightly wider, the wire harness 4 can be picked up by the guide guide member 6 and guided to the step 5 without any problem.
[0035]
That is, as the slide door 1 is slid forward from the open state of the slide door 1 in FIG. 6 to close as shown in FIG. 1, the slide door 1 approaches the vehicle body 3 and the wire harness 4 approaches step 5. The crossover portion 4d of the wire harness 4 swings from the rear to the front. In FIG. 2, the transition part 4d of the wire harness 4 swings from right to left in the figure. Here, even if the wire harness 4 is disengaged to the right side from the guide guide member 6, the crossing portion 4 d rides on the guide guide member 6 while being in sliding contact with the inclined surface 20 of the guide guide member 6 as the slide door 1 is closed. (Picked up). At this time, if the second inclined surfaces 26 and 30 of FIGS. 4 to 5 are provided, the wire harness 4 can be carried on the guide guide member 6 very smoothly and reliably.
[0036]
When the wire harness 4 rides on the guide guide member 6, the height of the crossover portion 4 d of the wire harness 4 is maintained high , so that the space between the step 5 and the door trim (not shown) of the slide door 1 is thereby increased. The bridging portion 4d is prevented from being caught.
[0037]
This is the same even when the height of the lead-out portion 4c of the wire harness 4 on the slide door 1 side is extremely lower than the height of step 5 as shown in FIG.
[0038]
That is, the wire harness 4 swings from the rear to the front as shown in FIGS. 6 to 1 by the closing operation of the slide door 1, and at that time, the wire harness 4 rides on the swing member 6 along the inclined surface 20. The wire harness 4 is lifted upward and the slide door 1 is lifted slightly just before it is closed along a guide rail (not shown) on the vehicle body 3 side (this differs depending on the vehicle type), and slides with the vehicle body 3. The wire harness 4 is prevented from being caught between the door 1 and the door 1.
[0039]
To the use of the guide the guide member 6 thus curved smoothly with a large radius wire harness 4 is along the inclined surface 20 of the guide the guide member 6, the upper and lower bent portion 4e of the wire harness 4, excessive force to 4f It is prevented from acting, and interference (rubbing) with the lower weather strip 35 is prevented.
[0040]
In FIG. 7, 7 is a metal panel of the sliding door 1, 8 is a protector which is a slack absorbing device, 40 is a skirt of the lid of the protector 8, 36 is a synthetic resin door trim, and 37 is a weather strip on the door trim side. , 38 are metal body panels, and 12 is a clamp for fixing the wire harness.
[0041]
The skirt 40 of the lid portion of the protector 8 is curved outward, and the lead-out portion 4 c of the wire harness 4 is smoothly curved along the skirt 40. In FIG. 1, reference numeral 39 denotes a slider that engages with a guide rail on the vehicle body side.
[0042]
Since the wire harness 4 is pulled almost without slack when the sliding door 1 is fully opened and fully closed, the leaf spring 9 (FIG. 1) is not so much needed, and when the sliding door 1 is half open, the wire harness 4 faces downward. Since it is greatly slackened, upward biasing by the leaf spring 9 is required.
[0043]
Since the wire harness 4 is guided upward by the guide guiding member 6 at the stage before the sliding door 1 of FIG. 1 is closed, the action of the leaf spring 9 is promoted. Accordingly, it is possible to absorb the slack of the wire harness 4 by using the leaf spring 9 thinner than the conventional one, and the cost of the leaf spring 9 is reduced, and the wire by the leaf spring 9 when the sliding door 1 is fully opened and fully closed. The pressing of the harness 4 can be kept small.
[0044]
In FIG. 7, the wire harness 4 is routed along parts other than the step of the vehicle body 3, for example, the panels 38 and 39 below the step 5, and the guide guide member 6 is disposed on the panels 38 and 39. It is also possible to set up. By so doing, the height difference between the lead-out portion 8b of the protector 8 on the slide door side and the harness wiring portion on the vehicle body side is reduced, and the pinching prevention of the wire harness 4 becomes more advantageous. It is also possible to route the wire harness 4 on the floor panel or scuff plate and to dispose the guide guide member 6.
[0045]
In addition, the harness slack absorbing device can be supported by bending the wire harness by using, as an elastic member, a member obtained by extending a leaf spring or a small-diameter coil spring without using a protector. Further, as the harness slack absorbing device, a horizontal guide rail, a slider that is slidably engaged with the guide rail, and a pair of flexible arms that have one end connected to the slider and the other end connected to the slide door are used. It is also possible.
[0046]
【The invention's effect】
As described above, according to the first aspect of the present invention, for example, immediately before the sliding door is closed, the transition portion of the wire harness is picked up by the inclined surface of the guide guiding member on the vehicle body side and guided upward along the inclined surface. Thus, the wire harness is prevented from being caught between the vehicle body and the slide door, and the wire harness is prevented from being damaged or disconnected. Further, the wire harness routed downward from the vehicle body side to the slide door side is routed obliquely downward along the inclined surface of the guide guiding member, so that the upper side and the lower side of the wire harness transition portion are arranged. Bending is smoothly performed with a large radius, an excessive force is not applied to the wire harness, and damage to the wire harness is prevented.
[0047]
In addition, when the crossover portion of the wire harness swings forward in accordance with the closing operation of the slide door, the crossover portion of the wire harness smoothly follows the first inclined surface along the second inclined surface of the guide guiding member. Since the guide is guided, the operation of picking up the transition portion by the guide guide member is smoothly and reliably performed .
[0048]
According to the second aspect of the present invention, the guide guide member reliably prevents the wire harness from being caught between the tip of the step and the slide door. The step is a part where the wire harness is easily routed from the slide door side, and even if the tip of the step is sharp, the wire guide can be prevented from being damaged by the guide guiding member without being affected by it.
[0049]
According to the invention described in claim 3 , for example, by forming the guide guide member at the same time as the press molding of the metal vehicle body, the parts cost of the guide guide member and the number of assembling steps can be reduced. Cost increase is prevented.
[0050]
Further, according to the invention of claim 4 , since the wire harness is fixed in the vicinity of the guide guide member, the crossover portion of the wire harness is accurately positioned on the guide guide member when the sliding door is closed. The crossover is accurately picked up by the guide guide member. Thereby, pinching of the wire harness between the sliding door and the vehicle body is prevented more accurately.
[0051]
In addition, the wire harness can be kept on the guide guide member regardless of the opening / closing operation of the slide door, and the position of the crossover of the wire harness is increased, so that the wire harness is moved between the slide door and the vehicle body. The wire harness can be more reliably prevented from being caught. In addition, the wire harness is maintained in a state of being inclined obliquely downward from the vehicle body to the sliding door along the inclined surface of the guide guiding member, so that the upper and lower bending of the wire harness is smoothly bent with a large radius. The state is maintained, whereby an excessive stress is not applied to the wire harness, and the wire harness is prevented from being damaged over time.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a wiring structure for a sliding door harness according to the present invention when the sliding door is closed.
FIG. 2 is a perspective view showing the wiring state of the wire harness on the vehicle body side.
FIG. 3 is a perspective view showing one embodiment of a guide guide member for the wire harness.
FIG. 4 is a perspective view showing another form of the guide guide member.
FIG. 5 is a perspective view showing another form of the guide guiding member.
FIG. 6 is a perspective view showing a routing structure of a sliding door harness when the sliding door is opened.
FIG. 7 is a front view showing a harness wiring configuration when the height difference of the harness wiring parts between the sliding door and the vehicle body is large.
FIGS. 8A and 8B show an embodiment of a conventional wiring structure for a sliding door harness, where FIG. 8A is a transverse sectional view in a fully closed state of the sliding door, and FIG. 8B is a transverse sectional view in a fully opened state of the sliding door.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sliding door 2 Harness slack absorption apparatus 3 Vehicle body 4 Wire harness 4d Transition part 5 Step 6, 25, 28 Guide guidance member 20, 29 1st inclined surface 26, 30 2nd inclined surface

Claims (4)

A harness slack absorbing device is provided on the slide door, and the wire harness on the slide door side is accommodated in the harness slack absorbing device while the harness slack absorbing device is attached to the harness fixing member on the vehicle body side from the long opening of the harness slack absorbing device. In the routing structure of the harness for sliding doors, which is swingably routed across the crossover part,
Upwardly to guiding the connecting portions of the wire harness during closing operation of the sliding door, the guide guide member having a first inclined surface facing the sliding door side is provided on said vehicle body side, the guide induction member The second inclined surface that intersects the first inclined surface and picks up the transition portion when the sliding door is closed, and the transition portion rides on the guide guide member along the first inclined surface. A sliding door harness routing structure characterized in that pinching of the transition portion when the sliding door is closed is prevented by being positioned higher by the thickness of the guide guiding member. The guide induction member-installing structure of claim 1, wherein the sliding door harness, characterized in that disposed on the distal end side of the step of the vehicle body. 3. The sliding door harness routing structure according to claim 1, wherein the guide guiding member is formed integrally with the vehicle body. The wiring structure for a sliding door harness according to any one of claims 1 to 3 , wherein the wire harness is fixed to a harness fixing member on the vehicle body side in the vicinity of the guide guiding member.

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