JP2002127845A - Power supply device for slide door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent a wire harness from being pulled when a slide door is opened and closed. SOLUTION: This power supply device for slide door comprises a guide rail 51 installed on a slide door side and a slider 56 engaged slidably with the guide rail. The intermediate part of the wire harness 54 is fixed to the slider, and one side of the wire harness is laid to the slide door side and the other is laid from the slider to a vehicle body side. The slider 56 is connected to the vehicle body 8 through a connection member 21 to stop the movement of the slider by the connection member. The connection member 21 is a flexible cable. A ring part 24 is proved at both ends of the flexible cable 21, and the ring part at one end is connected to the slider 56 and the ring part at the other end is connected to the vehicle body 8 rotatably in circumferential direction. The connection member 21 is straightness when the slide door 1 is fully opened. The crossover part 75 of the wire harness 54 is loosened more than the connection member when the slide door 1 is fully opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a sliding door of an automobile. The present invention is applied to a wiring harness for supplying power from a vehicle body side to functional parts on the sliding door side. The present invention relates to a power supply device for a sliding door that absorbs and reliably prevents the wire harness from being pulled.

[0002]

2. Description of the Related Art Electric power is supplied from a vehicle body side (power supply side) to functional parts of a sliding door used in a one-box car, a wagon car, and the like, and an electric signal is transmitted from the sliding door side to a vehicle body side. In order to do so, various power supply devices for sliding doors have been conventionally proposed.

Various functional components 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. A power supply current or a signal current is supplied or received to or from these functional components, and it is necessary to supply and receive power not only when the slide door is closed but also when it is opened.

FIGS. 6 (a) and 6 (b) show an embodiment of a conventional power supply device for a sliding door described in Japanese Patent Application Laid-Open No. 7-222274.

[0005] This device draws out an electric wire (wire harness) 119 in accordance with the opening / closing operation of the slide door 118.
A windable reel 120 is provided on the vehicle body 121 side, one end of an electric wire 119 is connected to a speaker 123 as a functional component on the door side via a hinge 122, and the other end of the electric wire 119 is a functional component on the vehicle body side Connected to an audio (not shown).

When the slide door 118 shown in FIG. 6A is closed, the electric wire 119 is extended from the reel 120 and extended.
When the slide door 118 shown in FIG.
9 is wound on a reel 120. Sliding door 118
Is in close contact with the vehicle body 121 while moving forward when closed, and retreats while being separated outward when opened. Thus, the sliding door 1
18 moves at least two-dimensionally or three-dimensionally.

However, in the above-described conventional apparatus, there is a concern that the electric wire 119 is easily damaged because the electric wire 119 must be wound around the reel 120 several times. In addition, there is a problem that it is difficult to apply a wire harness having a large number of circuits (the number of electric wires) due to poor flexibility.

In order to solve these problems, the applicant of the present invention has previously disclosed in Japanese Patent Application No. 11-374770 a method in which a sliding door is provided with a horizontal guide rail, and a slider is slidably engaged with the guide rail. A power supply device with a structure in which the wire harness on the sliding door side is fixed to the vehicle body and wired to the vehicle body side was proposed.

The wire harness on the slide door side is hung around the vehicle body with a curved space, and is connected to the vehicle body side wire harness by a connector near the step portion of the vehicle body. With the opening and closing of the slide door, the slider is left at a fixed position, and the transition portion of the wire harness is maintained at a fixed length between the slide door and the vehicle body. Since the transition portion of the wire harness has a curved shape, the wire harness is not adversely affected even if it is slightly pulled.

[0010]

However, in the above-described power supply device, when the vehicle is stopped on a steep slope, the slider moves in a direction of descending the slope of the slope to loosen the transition portion of the wire harness. When the occupant opens and closes the sliding door in the pulling direction of the wire harness from that state, or even if the occupant stops on a level ground, the occupant closes or opens the sliding door with strong force. In this case, the slider moves integrally with the slide door in the sliding direction (opening direction when opening, closing direction when closing) due to the frictional force with the guide rail. When the wire harness is small (when the excess length of the crossover portion is too short), there is a concern that the wire harness may be easily pulled and damaged.

On the other hand, if the excess length of the transition portion of the wire harness is excessively long, there is a concern that the transition portion may interfere with the sliding door or the vehicle body and be damaged or generate abnormal noise. Further, when the movement of the slider deteriorates with time due to the repeated opening and closing of the slide door, there is a concern that the wire harness may be pulled when the slide door is opened and closed as described above.

In view of the above, the present invention provides a power supply apparatus in which at least a guide rail is provided on a slide door, a slider is slidably engaged with the guide rail, and a wire harness is fixed to the slider. Even if the vehicle is stopped on a slope, the slide door is opened and closed vigorously, or the excess length of the wire harness transition between the slide door and the vehicle body is excessive, excessive tension may be applied to the wire harness transition. It is an object of the present invention to provide a power supply device for a slide door which does not act and can prevent interference between a transition portion of a wire harness and a slide door or a vehicle body.

[0013]

In order to achieve the above object, the present invention comprises at least a horizontal guide rail provided on a slide door side, and a slider slidably engaged with the guide rail. A slide door in which a longitudinal middle portion of the wire harness is fixed to the slider side, one of the wire harnesses is routed to the slide door side, and the other of the wire harness is routed from the slider to the vehicle body side. In the power supply device, the slider is connected to the vehicle body by a connecting member, and the movement of the slider is restricted by the connecting member. It is also effective that the connecting member is a flexible cable (claim 2). It is also effective that ring portions are provided at both ends of the cable, and a ring portion at one end is connected to the slider, and a ring portion at the other end is rotatably connected to the vehicle body in the circumferential direction. 3).
It is also effective that the length of the connecting member is set to be straight when the slide door is fully opened (claim 4). It is also effective that a transition portion of the wire harness from the slider to the vehicle body is slacker than the connecting member when the slide door is fully opened. Further, it is also effective that the curved portion of the wire harness routed from the slider to the slide door is accommodated in the protector. It is also effective that a horizontal and / or vertical arm member is rotatably provided on the slider, and the wire harness is fixed to the arm member. 6. The slide door power supply device according to claim 1, wherein one end of at least one pair of link arms is rotatably connected to the slider, and the other end of the at least one pair of link arms is the guide rail. (Embodiment 8).

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a first embodiment of a power supply device for a sliding door according to the present invention.

As shown in FIG. 1, the power supply apparatus A is provided with a horizontal guide rail 30 below the inner panel 2 of a slide door 1 of a one-box car or a part of a passenger car. 31 is slidably engaged with the slider 31, and a pair of upper and lower arm members 41, 4
3 is provided rotatably, and a pair of arm members 41 and 43 are provided.
The middle portion in the longitudinal direction of the wire harness 3 on the slide door 1 side is fixed to the inner panel 2 via one of the synthetic resin protectors 7 on the slide door 1 side.
And the other end of the wire harness 3 is
In the power supply device having a structure extending from the vehicle body 5 to the vehicle body 5, a wire cable (connecting member) 21 for connecting the slider 31 and the vehicle body 5 is provided.

In FIG. 1, a sliding door 1 is provided with a wire harness 3 so that power can be supplied from a vehicle body 2 to various auxiliary devices such as a power window motor, a door lock unit, and a speaker provided therein. Are being routed. The wire harness 3 is routed over the slide door 1 and the vehicle body 5, and one end of the wire harness 3 is connected to the above-mentioned various auxiliary devices via the connector 4.

The other end of the wire harness 3 is fixed or rotatably held by a harness holder 6 in a step portion 16 of the vehicle body 5 and is connected to a wire harness (not shown) on the vehicle body 5 side. It is connected. The wire harness on the vehicle body side is connected directly or indirectly to a battery (not shown). The door side wire harness 3 has a curved middle portion in the longitudinal direction, and the curved portion 20 is accommodated in the protector 7 and is wired to the slide door 1. The protector 7 is fixed to the inner panel 2 of the slide door 1. A power supply device for a slide door using the protector 7, the guide rail 30, the slider 31, and the arm members 41 and 43 has been disclosed by the present applicant in Japanese Patent Application 2000
−109474.

The guide rail 30, the slider 31, the arm members 41 and 43, the protector 7, and the wire cable (hereinafter, simply referred to as a cable) 21 constitute the power supply device A of the present embodiment.
Is configured. The cable 21 is a characteristic part of the present embodiment, and the cable 21 functions to always keep the slider 31 at a fixed position regardless of the opening / closing operation of the slide door 1. One end of the cable 21 is connected to the slider 3 as shown in FIG.
The other end of the cable 21 is fixed to the metal step portion 16 of the vehicle body 5 by a fixing member such as a bolt (not shown).
To be rotatable. The shaft 49 may be a metal rivet.

As the cable 21, it is preferable to use a high-strength cable obtained by twisting a plurality of thin metal core wires. As shown in FIG. 3, the cable body 22, that is, a single wire having a twisted core wire is used. Metal ring members 23 are fixed to both ends. The ring member 23 is composed of, for example, an annular ring portion 24 and a cylindrical body portion 25 integrally formed with the ring portion 24, and the body portion 25 is fixed to the cable main body 22 by means such as crimping or welding. A hole 26 is formed inside the ring 24. In FIG. 3, the cable 21 is illustrated as being bent for convenience, but the cable 21 can be freely deformed into a straight shape or a curved shape in a free state.

Instead of the ring member 23, the cable main body 22 may be formed into a ring by bending the cable main body 22 in a ring shape, and the ring may be fixed to the cable main body 22 with a binding device (not shown). In this case, the cable main body 22 may be curved along an annular holding plate (not shown) to form a ring portion. Further, the cable main body 22 may be formed of one thick copper wire. In addition, the cable main body 22 may be made of an elastic wire to reduce the impact tensile force.

1 and 2, the ring portions 24 at each end of the cable 21 are rotatably fixed to the arm support portion 39 of the slider 31 and the step portion 16 on the vehicle body side by a fixing member (not shown). ing. As the fixing member, for example, U
Using a bolt or the like having a hook portion in the shape of a letter or a letter J, the ring portion 24 of the cable 21 is hooked on the hook portion (by inserting the hook portion into the hole 26 in the ring portion 24, etc.), The ring portion 24 is engaged with the portion so as to be rotatable in the circumferential direction. The hook portion needs to have a shape so that the ring portion 24 does not easily come off, and it is also possible to use a fixing member having a mechanism for completely eliminating the gap between the hook portions.
Note that, in FIG.
Instead, one end of the cable 21 can be fixed to the slider body 50.

In FIG. 1, the other ring portion 24 of the cable 21 is positioned substantially horizontally, for example, in the step portion 16 of the vehicle body 5, and is inserted into the hole 26 on the inner diameter side of the ring portion 24 from the horizontal wall of the step portion 16. A vertically fixed fixing member (not shown) or a fixing member (not shown) protruding horizontally from the vertical wall of the step portion 16 is engaged. Since the ring portion 24 of the cable 21 is positioned substantially horizontally in the step portion 16, the swing of the cable 21 is smoothly performed around the ring portion 24 when the slide door 1 is opened and closed. At this time, the swing angle of the cable 21 is small.

A locking member (not shown) is similarly fixed to both ends of the cable body 22 (FIG. 3) in place of the ring portion 24, and the locking member is one-touch and the holes of the slider 31 and the step portion 16 are formed. And the like.
The locking member preferably has, for example, a flexible claw portion and a shaft portion supporting the claw portion.

The length of the cable 21 is set such that the cable 21 is tight when the slide door 1 is fully opened. This is because the distance from the step 16 of the vehicle body 5 to the inner panel 2 of the slide door 1 becomes maximum when the slide door 1 is fully opened. When an elastic (expandable / contractible) cable is used, it is sufficient that the length be a tension before the slide door 1 is fully opened, and the length setting can be rough, and the assembly dimensional error does not matter. .

The configuration other than the cable 21 in FIGS. 1 and 2 will be described in detail below. The slide door 1 slides along the front-rear direction of the vehicle body 5. However, when the slide door 1 is opened, the slide door 1 is once pulled out to the side of the vehicle body 5. The opposite is true for closing. A hinge roller 15 is provided at the lower end of the slide door 1 so as to slidably engage with a rail (not shown) at the lower part of the vehicle body 2.

The wire harness 3 includes a plurality of electric wires 18,
A flexible corrugated tube 19 made of synthetic resin and covering the outside of each electric wire 18 is provided. In the protector 7, the wire harness 3 remains almost as the electric wire 18,
A portion led out from the protector 7 toward the vehicle body 5 is protected by a corrugated tube 19. The corrugated tube 19 is held by the harness holder 6 so as to be fixed or rotatable in the circumferential direction. In addition, corrugated tube 1
9 is provided arbitrarily, and the plurality of electric wires 18
May be wound on a tape. Further, a knitted tube or the like (not shown) can be used instead of the corrugated tube 19.

The wire harness 3 has a middle portion in the longitudinal direction curved upward along the slide door, and the curved portion 20 is accommodated in the protector 7. The bending portion 20 is movable substantially parallel to the inner panel 2. The protector 7 includes a protector body 10 made of synthetic resin fixed to the inner panel 8 and a cover 34 made of synthetic resin that engages with the protector body 10.

As shown in FIG. 2, the protector main body 10 has a substrate portion 27 that is in contact with the inner panel 2 and has a substantially C-shape when viewed from the front, and a front side that is erected perpendicular to the edge of the substrate portion 27. It is composed of a first curved wall 28, a second curved wall 29 on the rear side, and a lower elongated frame-shaped housing portion 36 on the lower side. The guide rail 30 is assembled in the accommodating portion 36, and the slider 31 is slidably engaged with the guide rail 30. A first harness outlet 32 is formed on the upper end side of the first curved wall 28 and the second curved wall 29, and a second harness outlet 33 is formed on the lower end side.

The substrate 27 of the protector body 10 is fixed or temporarily fixed to the inner panel 2 by, for example, a flexible locking clip (not shown). Each curved wall 28, 29 is curved toward the front of the vehicle. The second curved portion 29 is formed with a larger radius of curvature than the first curved wall 28. The first curved wall 28 has a tongue piece 35 projecting outward from the first harness outlet 32. It is also possible to fix the wire harness 3 to the tongue piece 35 by tape winding. However, when the connector 4 is connected to the above-mentioned various auxiliary devices, it becomes unnecessary to move the wire harness 3 in the first harness outlet 32 to the rear of the vehicle body.

The lower second harness outlet 33 opens downward from the slide door 1 and is wider than the first harness outlet 32 so that the door-side wire harness 3 reciprocates as the slider 31 moves. It is tolerated.

The guide rail 30 is fitted in a frame-shaped receiving portion 36 formed continuously with the second harness outlet 33. The guide rail 30 is formed in a substantially U-shape in cross section, and the inner panel 2 is bolted at both ends with bolts 37.
It is fixed to. The guide rail 30 extends in the opening / closing direction (front-back direction) of the slide door 1.

The slider 31 has a rectangular block-shaped slider body 38 which slides on the guide rail 30 so as to be slidable.
And a substantially L-shaped arm support portion 3 integrally formed with the slider body 38 and protruding from the opening of the guide rail 30.
9 is provided. The slider body 38 is formed of a synthetic resin to improve the sliding. The arm support portion 39 is composed of a vertical support base (substituted by reference numeral 39 in FIG. 2) and a substantially semicircular support protrusion 40 projecting horizontally from the lower end of the support base toward the vehicle body. Arm support 3
9 is a part of the slider 31.

The base end of a substantially horizontal first arm member 41 is rotatably attached to the support projection 40. At the distal end side of the first arm member 41, the corrugated tube 19 is provided.
Are fixedly coupled to each other. The fixing piece 42 has a projection (not shown) that fits into the circumferential groove of the corrugated tube 19. It is also possible to support the corrugated tube 19 rotatably in the circumferential direction on a projection (not shown). The wire harness 3 led out from the second harness outlet 33 is fixed to the slider 31 via the corrugated tube 19 and the first arm member 41. As a result, the length of the curved portion 20 remains unchanged in the protector 7. The wire harness 3 led out from the second harness outlet 33 of the protector 7 can be swung by the first arm member 41 in the opening and closing direction of the slide door 1 (front-back direction).

A substantially vertical second arm member 43 is rotatably supported on the upper side of the vertical support base 39.
The second arm member 43 projects upward into the protector 7, and moves the wire harness 3 immediately before being led out along the board portion 27 of the protector 7 in the opening and closing direction of the slide door 1 (front-back direction).
It is fixed to swing freely. A pair of fixing pieces 44 similar to the above-mentioned fixing pieces 42 are formed on the distal end side of the second arm member 43. The fixing piece 44 has a corrugated tube 1
A projection (not shown) that fits into the peripheral groove 9 is formed.
It is also possible to support the corrugated tube 19 rotatably in the circumferential direction along a projection (not shown).

The cover 26 has a vertical substrate portion 45 and a first side wall 46 along a part of the first curved wall 28 and the housing portion 36.
And a second curved wall 29 and a second side wall 47 along a part of the accommodating portion 36. First side wall 46 and second side wall 47
Contributes to the formation of the first harness outlet 32,
The other end contributes to the formation of the second harness outlet 33. A flange 48 protruding outward is formed in a curved shape at the edge on the other end side. The flange portion 48 has a curved surface (not shown) with which the wire harness 3 led out from the second harness outlet 33 contacts via the corrugated tube 19.
have. The cover 26 is locked to the protector main body 10 by locking means (not shown) from the vehicle body 5 side.

The operation of the slide door power supply device A when the slide door 1 is opened and closed will be described below. 1 and 2 show a state in which the sliding door 1 is slid backward from a closed state and opened. When the slide door 1 is shifted from the closed state to the open state, the slider 31 is located near the rear end of the guide rail 30 and the wire harness 3 is closed.
Is located in a state of being drawn toward the second curved wall 29 side of the protector 7. Then, the distal end of the horizontal first arm member 41 swings forward of the guide rail 30.

When the slide door 1 is slid backward and opened, the slider 31 moves to the front end side of the guide rail 30. The curved portion 20 of the wire harness 3 moves substantially parallel to the inner panel 2 and is located on the first curved wall 28 side of the protector 7 as shown by a virtual line in FIG. The tip of the first arm member 41 swings its head when closing the slide door 1 and swings to the rear side of the guide rail 30.

When the slide door 1 is opened and closed, the slider 31 is connected to the vehicle body 5 with a slight tension by the cable 21, so that the position of the slider 31 is always kept constant with respect to the vehicle body 5. That is, only the guide rail 30 moves forward and backward together with the slide door 1, and the slider 31
Slides relatively on the guide rail and always remains at a fixed position.

The slider 31 has a synergistic effect of the restoring force of the curved transition portion of the wire harness 3, that is, the portion (substituted by reference numeral 19) bridged from the slide door 1 to the vehicle body 5, and the pulling force of the cable 21. The correct position is always maintained with respect to the vehicle body 5 (not with respect to the sliding door 1). Rather than the slider 31 moving along the guide rail 30, the guide rail 30
Move together with the slide door 1 in a state where is left.

Even when the occupant opens and closes the slide door 1 extremely strongly, since the slider 31 is pulled toward the vehicle body by the cable 21, the slider 31 has a frictional force with the guide rail 30 or an inertial force of the slide door 1. Therefore, the sliding door 1 does not largely move in the moving direction.

For example, when the slide door 1 is strongly opened rearward, a rearward force acts on the slider 31, but the cable 21 causes the slider 31 to move in the direction of the vehicle body 5, more precisely, in a direction substantially perpendicular to the guide rail 31. , The slider 31 can stay at a substantially constant position against the force of the slider 31 moving backward. When the slide door 1 is strongly closed forward, a forward force acts on the slider 31, but similarly, the slider 31 remains at a substantially constant position against the force of the slider 31 moving forward.

When the slide door 1 is closed, the slide door 1 is located on the same plane as the outer side surface of the vehicle body 5 (FIG. 6).
(See (a)), while the sliding door 1 is open, the sliding door 1 is separated outward along the bent shape of the rail (not shown) on the vehicle body side (see FIG. 6B).

When the slide door 1 is closed, the cable 21 is slightly slackened to absorb the moving distance in the thickness direction of the slide door 1, and when the slide door 1 is opened, the slider 21 is stretched tight.
1 is pulled toward the vehicle body. Therefore, the sliding door 1
When the cable is strongly opened from the fully closed state, the cable 21 is slightly slackened, and the slider 31 moves slightly rearward together with the guide rail 30. In this case, the crossover portion of the wire harness 3 (replaced by reference numeral 19) Since the wire 21 is largely loosened, thereby absorbing the tension, and further preventing the movement of the slider 31 by the cable 21, the tension of the transition portion 19 of the wire harness 3 is prevented.

When the transition portion 19 of the wire harness 3 has a small curvature when the slide door 1 is fully opened, or when the transition portion 19 is tightened without any curvature, the transition portion 19 becomes slightly loose when the slide door 1 is fully closed. At the same time, the cable 21 is loosened.
9 is set to be smaller than the slack amount (this is an essential requirement), when the slide door 1 is opened, the cable 21 is first pulled and the slider 31 is moved further.
Of the wire harness 3 is prevented from being pulled. Thereby, there is no need to worry that the transition portion 19 of the wire harness 3 is elongated or damaged.

When the transition portion 19 of the wire harness 3 is greatly loosened, interference between the transition portion 19 and the door trim (not shown) of the vehicle body 5 or the slide door 1 and the damage of the transition portion 19 are caused. Although there is a concern about occurrence of noise or abnormal noise, the provision of the cable 21 can reduce the bending of the transition portion 19 (the slack of the transition portion 19 can be reduced), and the transition portion 19 and the vehicle body 5 and the slide door 1 Interference is prevented.

When the vehicle is stopped on a steep slope, the slider 31 tries to move by its own weight along the guide rail 30 in the inclination direction of the slope, but the cable 21 causes the slider 31 to move the vehicle body 5. Since the slider 31 is pulled in the direction, that is, the direction substantially perpendicular to the guide rail 30, the movement of the slider 31 is prevented, and the position of the slider 31 is always kept constant. Thereby, the pulling of the transition portion 19 of the wire harness 3 is prevented, and even if the slide door 1 is strongly opened / closed while the vehicle is stopped on a slope, no tensile force acts on the transition portion 19 of the wire harness 3, and the wire is not moved. Elongation and damage of the harness 3 are prevented.

Since the slide door 1 comes into contact with and separates from the vehicle body 8 when it is opened and closed, the connecting member for connecting the slider 31 and the vehicle body 5 must be flexible like the cable 21. Cable 2 as connecting member
It is also possible to use a flexible and bendable shaft (not shown) instead of 1, but this is costly. The cable 21 is not limited to metal, but may be a synthetic resin or glass fiber as long as it can secure tensile and bending strength.

FIGS. 4 and 5 show a second embodiment of the power supply device for a sliding door according to the present invention.

As shown in FIG. 4, a horizontal guide rail 51 is provided on the lower side of the inner panel 2 of the slide door 1, and a slider 56 is provided on the guide rail 51.
Are slidably engaged, one end of a pair of openable and closable link arms 52, 53 is pivotally supported by a slider 56, and the other end of the pair of link arms 52, 53 is pivotally supported by a guide rail 51. The middle portion in the longitudinal direction of the wire harness 54 on the slide door side is fixed, and the wire harness 5
4 is routed along a pair of link arms, and the other of the wire harness 54 is
In the power feeding device having a structure that is hung on the side, the slider 5
A wire cable (connection member) 21 for connecting the vehicle body 6 to the vehicle body 8 is provided.

The slider 56 is connected to one end of a pair of link arms 52, 53 which can be freely extended and retracted. The pair of link arms 52, 53 are rotatably connected to each other by a shaft 59 at the center thereof. It is arranged in a substantially inverted V shape along the inner panel 2. A pair of link arms 5
The other ends of the guide rails 2 and 53 are rotatably supported by the front end of the guide rail 51. The pair of link arms 52, 53
Are proposed together with the guide rail 51 and the slider 56 in Japanese Patent Application No. 11-374770.

The wire harness 54 on the slide door side is fixedly routed along a pair of link arms 52, 53, and is connected from the front link arm 53 to functional components on the slide door side via a connector (not shown). , From the rear link arm 52 along the slider 56, and from the slider 56 to the vehicle body 8 side. A wire harness 54 is provided between the sliding door 1 and the vehicle body 8.
The connecting portion 75 is bent in a substantially U-shape so that the wire harness 9 on the vehicle body side and the connectors 11, 8 are provided on the vehicle body 8 side.
8 are connected. In this specification, the vehicle traveling direction is defined as the front.

The guide rail 51, the slider 56, the pair of link arms 52, 53, and the wire cable (hereinafter, simply referred to as a cable) 21 constitute the power supply apparatus B of the present embodiment. The cable 21 is a characteristic part of the present embodiment, and the slider 56 is independent of the opening / closing operation of the slide door 1.
Works to always keep in a fixed position. Cable 2
One end of the cable 1 is rotatably fixed to a shaft portion (slide shaft) 68 of the slider 56 by a fixing member 81 (FIG. 5) such as a bolt as shown in FIG. 2, and the other end of the cable 21 is a vehicle as shown in FIG. Similarly, it is rotatably fixed to a metal step 12 of the body 8 by a fixing member (not shown) such as a bolt.

Since the structure of the cable 21 is the same as that described in the first embodiment (FIG. 3), a detailed description will be omitted.

4 and 5, the ring portion 24 at each end of the cable 21 is rotatably fixed to the slider 56 on the slide door side and the step portion 12 on the vehicle body side by a fixing member. As the fixing member, for example, a bolt 81 having a U-shaped or J-shaped hook portion (not shown) or the like is used.
The ring portion 24 of the cable 21 is hooked on the hook portion (for example, the hook portion is inserted into the hole 26 in the ring portion 24), and the ring portion 24 is engaged with the hook portion so as to be rotatable in the circumferential direction. . The hook portion needs to have a shape so that the ring portion 24 does not easily come off, and it is also possible to use a fixing member having a mechanism for completely eliminating the gap between the hook portions.

As shown in FIGS. 4 and 5, the slider 56 has a thin portion 72 in the first half and a thick portion 90 in the second half, and covers the thick portion 90 with a cover-like pressing plate 91 (FIG. 5) and bolts. By doing so, the wire harness 54 is sandwiched and fixed between the thick portion 90 and the holding plate 91, but a plurality of bolts 80 (FIG. 5) for fixing the holding plate 91 to the thick portion 90 are provided. It is possible to fix the ring portion 24 of the cable 21 by replacing one of them with the bolt 81 having the hook portion (FIG. 5).

In the step portion 12 of the vehicle body 8, the other ring portion 24 of the cable 21 is positioned, for example, substantially horizontally, and vertically rises from a horizontal wall of the step portion 12 in a hole 26 on the inner diameter side of the ring portion 24. A fixed member (not shown) or a fixed member (not shown) projecting horizontally from the vertical wall of the step portion 12 is engaged. Step part 12
When the slide portion 1 is opened and closed, the swinging of the cable 21 (the swinging angle is small) is performed smoothly with the ring portion 24 as a fulcrum when the slide door 1 is opened and closed.

Note that, instead of the ring portion 24, a locking member (not shown) is similarly fixed to both ends of the cable body 22, and the locking member is one-touch and the slider 56 and the step portion 12 are fixed.
It is also possible to insert and lock it in the hole or the like of. The locking member preferably has, for example, a flexible claw portion and a shaft portion supporting the claw portion.

The length of the cable 21 is set so that the cable 21 is tight when the slide door 1 is fully opened. This is because the distance from the step portion 12 of the vehicle body 8 to the inner panel 2 of the slide door 1 becomes maximum when the slide door 1 is fully opened. When an elastic (expandable / contractible) cable is used, it is sufficient that the length be a tension before the slide door 1 is fully opened, and the length setting can be rough, and the assembly dimensional error does not matter. .

The configuration other than the cable 21 in FIGS. 4 and 5 will be described below in detail. As shown in FIG. 4, the connectors 88 and 11 of the wire harnesses 54 and 9 on the slide door side and the vehicle body side are formed of a metal step portion 12 of the vehicle body 8.
Is fixed to the inside of the vertical wall 13. The slide door 1 is slidably engaged with a rail (not shown) on the vehicle body side by a hinge roller 14 at a lower end side.

The guide rail 51 has a straight band-like plate portion 6.
0 (height) guide hole 55 at the center of height
, And fixed portions 62 to 64 (FIG. 5) are formed at both ends of the plate portion 60 and an intermediate portion in the longitudinal direction. Each of the fixed portions 62 to 64 slides via a ring-shaped spacer 65. The door 1 is fixed to the inner panel 2 with bolts 66. A gap 67 corresponding to the thickness of the spacer 65 is formed between the inner panel 2 and the guide rail 51. Each fixing portion 62 to 64 of the guide rail 51 has a bolt insertion hole 76.
To 78 (FIG. 5).

The shaft portions 68, 71 (FIG. 5) of the slider 56 penetrate through the guide holes 55 of the guide rail 51, and
The flange portion (not shown) at the tip of 71 is the guide rail 5
1 is slidably located in the gap 67 on the back side. For example, bearings and collars (not shown) are provided on the outer periphery of the shaft portions 68 and 71, and the slider 56 can smoothly advance and retreat in the horizontal direction along the guide holes 55.

The slider 56 is formed in a rectangular shape and has a stepped portion 70 (FIG. 5) cut out at the center in the longitudinal direction, and a curved portion 75 of the wire harness 54 is curved forward of the stepped portion 70 as shown in FIG. It is projected in the state. The latter half of the slider 56 is formed thick as described above, and a pressing plate 91 (FIG. 5) is overlapped on the front side of the thick part 90 (FIG. 4) in the thickness direction to be fixed so as to sandwich the wire harness 54. ing. A holding portion 92 having a semicircular cross section curved at substantially 90 ° is provided on the holding plate 91.
(FIG. 5) is bulged, a groove portion corresponding to the holding portion 92 is formed in the thick portion 90, and the holding plate 91 is fixed to the thick portion 90 with a bolt 80 (FIG. 5). The wire harness 54 is held between the wire harness 54 and the wire harness 54.

The pair of link arms 52 and 53 are arranged above the guide rail 51 and are arranged to open in an inverted V-shape. On the back side of the guide rail 51, one end of one link arm 52 is connected to the front thin portion 72 of the slider 56 by a shaft 71 (FIG. 5). One end of one link arm 52 is located in a gap 67 with the inner panel, and moves integrally with the slider 56 along the back surface of the guide rail 51.

The other end of one link arm 52 is wrapped with the other end of the other link arm 53 and the shaft 59
Are connected by One end of the other link arm 53 is provided with a shaft 7
3 and are rotatably connected. The other link arm 5
3 is also located in the gap 67.

The operation involved in opening and closing the slide door 1 will be described below. As the slider 56 moves, the link arms 52 and 53 open and close (expand and retract) back and forth, and the wire harness 54 expands and contracts integrally with the link arms 52 and 53. The two link arms 52 and 53 assist the movement of the slider 56, and at the same time, prevent the wire harness 54 from hanging down and getting tangled.

Here, since the slider 56 is connected to the vehicle body side with a slight tension by the cable 21, the slider 5
The position of 6 is always kept constant with respect to the vehicle body 8.
That is, only the guide rail 51 advances and retreats with the slide door 1, and the slider 56 relatively slides on the guide rail and always remains at a fixed position.

When the slide door 1 is fully opened, the slider 56 moves to the front end side of the guide rail 51 as shown by the solid line in FIG. 5, whereby the link arms 52 and 53 are completely closed and stand vertically upward. In addition, when the slide door 1 is fully closed, the slider 56 moves to the rear end side of the guide rail 51 as shown by a chain line in FIG. 5, and accordingly, both link arms 52 and 53 are opened in the shape of “F”. Double link arm 5
When the members 2 and 53 shift from the closed state to the open state, the central shaft portion 59 connecting the link arms 52 and 53 moves along an arc-shaped trajectory.

The opening and closing operations of both link arms 52 and 53 are as follows.
The slider 56 is moved along the guide rail 51, and the slider 56 exerts a synergistic effect between the restoring force of the curved portion (crossover portion) 75 of the wire harness 54 and the pulling force of the cable 21 on the vehicle body 8. (Not with respect to the sliding door 1) at all times. Slider 5
6 moves along the guide rail 51,
The guide rail 51 moves integrally with the slide door 1 with the slider 56 left.

Even when the occupant opens and closes the slide door 1 extremely strongly, since the slider 56 is pulled toward the vehicle body by the cable 21, the slider 56 has a frictional force with the guide rail 51 or an inertial force of the slide door 1. Therefore, the sliding door 1 does not largely move in the moving direction.

For example, when the slide door 1 is strongly opened rearward, a rearward force acts on the slider 56, but the slider 56 is moved in the direction of the vehicle body 8 by the cable 21, more precisely, in a direction substantially orthogonal to the guide rail 51. Since the slider 56 is pulled downward (slightly downward in FIG. 4), the slider 56 can remain at a substantially constant position against the force of retreating. When the slide door 1 is strongly closed forward, a forward force acts on the slider 56, but similarly, the slider 56 stays at a substantially constant position against the force of the slider 56 moving forward.

When the slide door 1 is in the closed state, the slide door 1 is positioned on the same plane as the outer surface of the vehicle body 8 (FIG. 6).
(See (a)), while the sliding door 1 is open, the sliding door 1 is separated outward along the bent shape of the rail (not shown) on the vehicle body side (see FIG. 6B).

The cable 21 is slightly loosened when the slide door 1 is closed to absorb the moving distance in the thickness direction of the slide door 1, and when the slide door 1 is opened, the cable 21 is stretched tight to slide the slider 5.
6 is pulled toward the vehicle body. Therefore, the sliding door 1
When the cable is strongly opened from the fully closed state, the cable 21 is slightly slackened, and the slider 56 moves slightly rearward together with the guide rail 51. In this case, however, the crossing portion 75 of the wire harness 54 (from the slide door 1 to the vehicle). The wire harness 54 is also loosened, and the cable 21 prevents the slider 56 from moving further.
Of the transition portion 75 is prevented.

When the transition portion 75 of the wire harness 54 has a small curvature when the slide door 1 is fully opened, or when the transition portion 75 is taut without any curvature, the transition portion 75 is slightly loosened when the slide door 1 is fully closed. At the same time, the cable 21 is slackened, but the slack amount of the cable 21 is set smaller than the slack amount of the crossover portion 75 (this is an essential requirement). 21 is pulled and the further slider 5
6 is prevented from moving, and the transition portion 7 of the wire harness 54 is prevented.
5 is prevented. Thereby, the wire harness 5
There is no need to worry about the crossover 75 of the 4 extending or being damaged.

When the transition portion 75 of the wire harness 54 is greatly loosened, interference between the transition portion 75 and the door trim (not shown) of the vehicle body 8 or the slide door 1 and damage to the transition portion 75 are caused. Although there is a concern about the occurrence of noise and abnormal noise, the provision of the cable 21 can reduce the curvature of the transition portion 75 (the slackness of the transition portion 75 can be reduced), and the transition portion 75 and the vehicle body 8 or the slide door 1 Interference is prevented.

When the vehicle is stopped on a steep hill, the slider 56 tries to move along the guide rail 51 in the inclination direction of the hill along with the link arms 52 and 53 by its own weight. Since the slider 56 is pulled in the direction of the vehicle body 8, that is, in a direction substantially orthogonal to the guide rail 51, the movement of the slider 56 is prevented, and the position of the slider 56 is always maintained constant. Thereby, the pulling of the transition portion 75 of the wire harness 54 is prevented, and even if the slide door 1 is strongly opened and closed with the vehicle stopped on a slope, no tension is applied to the transition portion 75 of the wire harness 54, and the wire The extension and damage of the harness 54 are prevented.

Since the slide door 1 comes into contact with and separates from the vehicle body 8 when it is opened and closed, a connecting member for connecting the slider 56 and the vehicle body 8 must have flexibility like the cable 21. Cable 2 as connecting member
It is also possible to use a flexible and bendable shaft (not shown) instead of 1, but this is costly. The cable 21 is not limited to metal, but may be a synthetic resin or glass fiber as long as it can secure tensile and bending strength.

In the above embodiment, the slack of the wire harness 54 on the slide door side is absorbed by the pair of link arms 52, 53, but when the number of wires is small, a pulling reel is used instead of the link arms 52, 53. A wire harness 54 is routed along a rotatable guide roller (not shown) provided on the slide door 1 or used, and a wire harness 54 is provided between the upper guide roller and the lower guide rail 51. It is also possible to swing. In any case, at least the slider 56, the guide rail 51, and the cable 21, that is, the connecting member are essential requirements. The number of link arms 52 and 53 for arranging the wire harness 54 is not limited to two, but may be three or four as long as they can bend and stretch smoothly.

[0078]

As described above, according to the first aspect of the present invention, when the slide door is strongly opened and closed, the slider tends to move in the moving direction of the slide door along the guide rail due to frictional force or inertial force. However, since the slider is connected to the vehicle body by the connecting member, the movement of the slider is prevented, and a strong tensile force is prevented from acting on the crossover portion of the wire harness bridged from the slider to the vehicle body side. You. Also, when the vehicle is stopped on a steep slope, the slider attempts to move in the slope direction of the slope, but similarly, since the slider is connected to the vehicle body by the connecting member, the movement of the slider is prevented, The transition portion of the wire harness is prevented from being completely extended, and the tension of the wire harness when the slide door is opened and closed from the completely extended state is prevented. As a result, elongation, deformation and damage of the wire harness with time are prevented.

Further, since the position of the slider is corrected in a corrective manner by the connecting member, the connecting portion of the wire harness does not need to be long curved as in the prior art, and the excess length of the connecting portion can be reduced. Can be. As a result, the weight and cost can be reduced by shortening the wire harness, interference between the transition section and the sliding door or the vehicle body is prevented, and wear, damage and abnormal noise of the transition section are prevented. You.

According to the second aspect of the present invention, when the sliding door comes into contact with or separates from the vehicle body during opening and closing,
Since the cable is loosened (bent) and absorbs the distance between the slide door and the vehicle body, the slide door is smoothly opened and closed, and the position of the slider is reliably regulated by the cable.

According to the third aspect of the present invention, since the ring portion at each end of the cable is rotatably connected to the slider and the vehicle body in the circumferential direction, the slider moves slightly when the slide door is opened and closed. In this case, the cable smoothly swings at a small angle around the ring portion, and no excessive force is applied to the ring portion.

According to the fourth aspect of the invention, when the slide door is fully opened, the slide door is maximally outwardly separated from the vehicle body. At this time, the connecting member or the cable is tightened without loosening and the slider is pulled. Pulling to the vehicle body side, passengers tend to close with a stronger force than when opening the sliding door when closing, but especially when closing the sliding door strongly, the position of the slider is accurately defined,
The effect of the first aspect of the present invention is promoted by preventing the wire harness from being pulled.

According to the fifth aspect of the present invention, since the connecting portion of the wire harness is slacker than the connecting member when the slide door is fully opened, when the connecting member or the cable is pulled tight and the slider is pulled. No tensile force acts on the transition portion of the wire harness, so that the extension and damage of the transition portion are reliably prevented. Also, it is only necessary to set the transition portion of the wire harness to a length that is slightly loosened when the cable is taut, so that the shortening of the wire harness can reduce the weight and cost, as well as the transition portion and the slide door and the like. Interference with the vehicle body is prevented, and the occurrence of abrasion, damage, abnormal noise, and the like at the transition portion is more reliably prevented.

According to the sixth aspect of the present invention, the curved portion of the wire harness is protected in the protector, and when the curved portion relatively swings when the slide door is opened and closed, the other portion in the slide door is swung. Interference with parts and the like is prevented, and damage to the wire harness is prevented. In particular, since the excessive swinging of the wire harness is suppressed by the connecting member, a strong collision between the bent portion of the wire harness and the protector is prevented, and a collision noise (abnormal noise) between the wire harness and the inner wall of the protector is prevented. Is done. Not to mention the presence or absence of the protector, it is needless to say that the collision noise between the guide rail and the slider is prevented.

According to the seventh aspect of the present invention, when the slider advances and retreats along the guide rail when the slide door is opened and closed, the wire harness rotates integrally with the arm member and smoothly bends. No excessive stress is applied to the wire harness. Further, the connecting member prevents an excessive stroke of the slider and suppresses an excessive swinging motion of the arm member, so that no excessive stress is applied to the wire harness and the wire harness is protected.

According to the eighth aspect of the present invention, the wire harness on the slide door side is routed along the link arm, and the slack of the wire harness is reliably absorbed by the expansion and contraction of the link arm.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a power supply device for a sliding door according to the present invention.

FIG. 2 is a cable (connecting member) of the power supply device.
It is a front view which shows the attachment state of.

FIG. 3 is a plan view showing a cable as a connecting member.

FIG. 4 is a perspective view showing a second embodiment of the power supply device for a sliding door according to the present invention.

FIG. 5 is a cable (connecting member) of the power supply device.
It is a front view which shows the attachment state of.

FIG. 6 is a cross-sectional view showing one form of a conventional power supply device, in which (a) shows a fully closed state of a slide door and (b) shows a fully opened state of the slide door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slide door 3,54 Wire harness 5,8 Vehicle body 7 Protector 19,75 Transition part 21 Connecting member (cable) 24 Ring part 30,51 Guide rail 31,56 Slider 41,43 Arm member 52,53 Link arm A, B Power supply for sliding door

Claims (8)

[Claims] 1. A vehicle comprising a guide rail in a horizontal direction provided at least on a slide door side, and a slider slidably engaged with the guide rail, and a longitudinal intermediate portion of a wire harness is fixed to the slider side. In a power supply device for a slide door in which one of the wire harnesses is wired to the slide door side and the other of the wire harness is wired to the vehicle body side from the slider, the slider is connected to the vehicle body by a connecting member. And
A power supply device for a sliding door, wherein the movement of the slider is restricted by the connecting member. 2. The power supply device for a sliding door according to claim 1, wherein the connecting member is a flexible cable. 3. The cable according to claim 1, wherein a ring portion is provided at both ends of the cable, and a ring portion at one end is connected to the slider and a ring portion at the other end is rotatably connected to the vehicle body in a circumferential direction. The power supply device for a slide door according to claim 2. 4. The power supply device for a slide door according to claim 1, wherein the length of the connection member is set to be straight when the slide door is fully opened. 5. The power supply device for a slide door according to claim 4, wherein a transition portion of the wire harness from the slider to the vehicle body is slacker than the connecting member when the slide door is fully opened. . 6. A power supply for a slide door according to claim 1, wherein a curved portion of said wire harness arranged from said slider to said slide door is accommodated in a protector. apparatus. 7. The slider according to claim 1, wherein a horizontal and / or vertical arm member is rotatably provided on the slider, and the wire harness is fixed to the arm member. A power supply device for a slide door according to claim 1. 8. An end of at least one pair of link arms is rotatably connected to the slider, and the other end of at least one pair of arms is rotatably connected to an end of the guide rail. The power supply device for a slide door according to claim 1.