Power supply device for slide door

Abstract

To provide a power supply device for a slide door that can be reduced in size and weight.SOLUTION: A power supply device for a slide door comprises a cylindrical arm 30 whose one end supports a door-side end part of a passing part 10A so that a door-side electric wire arrangement part 10B is passed into a cylinder and then pulled out of the cylinder through an electric wire pull-out port 30b at the other end thereof, and a door-side protector 40 that pivotally supports the other end of the arm so that the other end can be rotated around a shaft of a rotating shaft 41. When the slide door is fully closed, the rotating shaft 41 is arranged, in an opening direction of the door, adjacently to the electric wire pull-out port pointing to an upper side of a vehicle, and rotates the electric wire pull-out port in a counterclockwise fashion, when the fully-closed slide door is opened. The door-side protector is provided with a shaft part 42 arranged closer to an opening direction of the door than the rotating shaft and a harness fixing part 43 arranged closer to the opening direction of the door than the shaft part. When the door is fully closed, the door-side electric wire arrangement part is pulled out from the electric wire pull-out port and then passed between the rotating shaft and the shaft part, and is pulled in an S-shape up to the harness fixing part to be fixed to the harness fixing part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power supply device for a sliding door. [Background technology]

[0002] Conventionally, vehicles such as automobiles are equipped with a power supply device for a sliding door that electrically connects a power source (such as a secondary battery) on the vehicle body side to switches and electrical components on the sliding door side. In this power supply device for a sliding door, a wire harness is responsible for the electrical connection. In this wire harness, a bridge section spans between the vehicle body and the sliding door, and power is supplied to electrically connected objects on the sliding door 500 side via a door-side electric wire routing section routed beyond the door-side end of the bridge section. For example, Patent Documents 1 to 3 listed below disclose a power supply device for a sliding door that includes a link arm in which one ends of two arms are connected to each other by an inter-arm rotation shaft, and the other end of one of the arms holds the door-side end of the bridge section, and a door-side protector that is fixed to the sliding door and rotates the other end of the other arm about a main rotation shaft, thereby rotating the link arm relative to the sliding door. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-074431 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-023248 [Patent Document 3] Japanese Patent Application Laid-Open No. 2010-228705 Summary of the Invention [Problem to be solved by the invention]

[0004] The door-side electric wiring section of the conventional power supply device for sliding doors is fixed to the fixing section of the door-side protector after passing through between the inter-arm rotation shaft and the main rotation shaft, and is then connected to the electrical connection object. While miniaturization and weight reduction are required on the sliding door side of the power supply device for sliding doors, there is room for improvement in the conventional structure from this perspective.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a power supply device for a sliding door that can be made smaller and lighter. [Means for solving the problem]

[0006] The present invention relates to a wire harness including a crossover section spanning between a vehicle body and a sliding door, a vehicle body-side electric wire routing section routed at a tip of a vehicle body-side end of the crossover section, and a door-side electric wire routing section routed at a tip of a door-side end of the crossover section; a vehicle body-side protector fixed to the vehicle body, holding the vehicle body-side end of the crossover section, and swinging the crossover section in conjunction with the opening and closing of the sliding door; a cylindrical arm supporting the door-side end of the crossover section at one end, passing the door-side electric wire routing section through a cylinder and drawing it out of the cylinder from an electric wire drawing outlet at the other end; and a door inner panel of the sliding door, fixed to the door inner panel of the sliding door, pivotally supporting the other end of the arm so that it can rotate about a rotation shaft, and drawing the door-side electric wire routing section out of the electric wire drawing outlet. and a door-side protector that routes the door-side electric wire routing portion, wherein the rotating shaft is disposed adjacent to the electric wire outlet opening, which faces upward of the vehicle, on the door-opening direction side of the sliding door when the sliding door is fully closed, and rotates the electric wire outlet opening counterclockwise when the sliding door is opened from the fully closed state, the door-side protector is provided with a shaft portion that is disposed on the door-opening direction side of the rotating shaft and a harness fixing portion that is disposed on the door-opening direction side of the shaft portion, and when the door is fully closed, the door-side electric wire routing portion is pulled out from the electric wire outlet opening, and then passes between the rotating shaft and the shaft portion, and is routed in an S-shape to the harness fixing portion and fixed to the harness fixing portion. [Effects of the Invention]

[0007] The power supply device for sliding door according to the present invention has a simple structure in which only one arm rotates around a rotation axis in accordance with changes in the wiring path of the bridge section. Therefore, this power supply device for sliding door contributes to miniaturization, weight reduction, and cost reduction. Furthermore, the power supply device for sliding door according to the present invention routes the door-side electric wiring portion in an S-shape between the electric wire outlet and the harness fixing portion when the sliding door is fully closed, and slackens the door-side electric wiring portion to absorb the excess length when the sliding door is opened from the fully closed state to the fully open state. Therefore, this power supply device for sliding door can absorb the excess length of the wire harness when the sliding door is opened and closed with such a simple structure, which also contributes to miniaturization, weight reduction, and cost reduction. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a power supply device for a sliding door according to an embodiment, as seen from inside a vehicle compartment, when the sliding door is in a fully closed position. [Figure 2] FIG. 2 is a plan view of the power supply device for a sliding door according to the embodiment, as seen from inside the vehicle cabin, when the sliding door is in a fully open position. [Figure 3] FIG. 3 is a plan view showing the positional relationship between the door-side protector and the arm when the sliding door is in the fully closed position. [Figure 4] FIG. 4 is a plan view showing the positional relationship between the door-side protector and the arm when the sliding door is in the fully open position. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a power supply device for a sliding door according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[0010] [Embodiment] One embodiment of a power supply device for a sliding door according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

[0011] Reference numeral 1 in FIG. 1 denotes a power supply device for a sliding door according to this embodiment.

[0012] The power supply device 1 for sliding door is mounted on a vehicle such as an automobile and supplies power from a power source on the vehicle body B to a sliding door 500 that can move back and forth in a sliding direction relative to the vehicle body B (FIGS. 1 and 2). The sliding door 500 is installed, for example, on the side of the vehicle and moves back and forth in the fore-and-aft direction of the vehicle. The power supply device 1 for sliding door is responsible for supplying power from a power source (such as a secondary battery) on the vehicle body B to an electrical connection object (not shown) on the sliding door 500. The electrical connection object is something that is installed on the sliding door 500, such as an electrical component or a switch. For example, the electrical component of the sliding door 500 refers to a drive device for driving a power window, a speaker, etc. Furthermore, the switch of the sliding door 500 refers to a switch for operating a power window, a switch for operating a power seat, etc.

[0013] The power supply device 1 for a sliding door includes a wire harness 10 (FIGS. 1 and 2). One end of the wire harness 10 is electrically connected directly or indirectly to a power source on the vehicle body B side, and the other end is electrically connected directly or indirectly to an object to be electrically connected on the sliding door 500 side. Therefore, the wire harness 10 has a bridge portion 10A that is a portion between the one end and the other end and that bridges between the vehicle body B and the sliding door 500 (FIGS. 1 and 2).

[0014] In this wire harness 10, one end of the crossover portion 10A (hereinafter referred to as the "vehicle body side end") is connected to one end on the vehicle body B side, and the other end of the crossover portion 10A (hereinafter referred to as the "door side end") is connected to the other end on the sliding door 500 side. Thus, the wire harness 10 has a vehicle body side electric wire routing portion (not shown) routed at the end of the vehicle body side end of the crossover portion 10A, and a door side electric wire routing portion 10B routed at the end of the door side end of the crossover portion 10A (FIGS. 1 and 2).

[0015] In the wire harness 10, the vehicle body side end of the crossover portion 10A is assembled to the vehicle body B side (FIGS. 1 and 2). The power supply device 1 for a sliding door is fixed to the vehicle body B and includes a protector (hereinafter referred to as the "vehicle body side protector") 20 that holds the vehicle body side end of the crossover portion 10A (FIGS. 1 and 2). The vehicle body side end of the crossover portion 10A is assembled to the vehicle body B side via this vehicle body side protector 20.

[0016] The vehicle body side protector 20 is molded from an insulating material such as synthetic resin. The vehicle body side protector 20 swings the transition portion 10A in conjunction with the opening and closing of the sliding door 500. The vehicle body side protector 20 is disposed on or near the floor surface FL of the vehicle body B in the vertical direction of the vehicle (FIGS. 1 and 2).

[0017] In addition, in the wire harness 10, the door-side end of the transition portion 10A is assembled to the sliding door 500 side (FIGS. 1 and 2). In this wire harness 10, the transition portion 10A is pulled between the door inner panel (not shown) and the door trim 501 of the sliding door 500 (i.e., inside the door trim 501), and the door-side end is assembled to the door inner panel side (FIGS. 1 and 2). The power supply device 1 for sliding door includes an arm 30 that supports the door-side end of the transition portion 10A at one end (FIGS. 1 to 4). The power supply device 1 for sliding door includes a protector (hereinafter referred to as the "door-side protector") 40 that is fixed to the door inner panel and supports the other end of the arm 30 (FIGS. 1 to 4). Note that only a portion of the door trim 501 is shown in the figures.

[0018] The arm 30 and the door-side protector 40 are molded from an insulating material such as synthetic resin. When viewed in the vehicle up-down direction, the arm 30 and the door-side protector 40 are disposed higher on the vehicle than the vehicle-body-side protector 20. When viewed in the door opening / closing direction of the sliding door 500, the arm 30 and the door-side protector 40 are disposed in the closing direction of the sliding door 500 (here, toward the front of the vehicle) when the sliding door 500 is fully closed, and in the opening direction of the sliding door 500 (here, toward the rear of the vehicle) when the sliding door 500 is fully opened.

[0019] The arm 30 is formed into a cylindrical shape. The arm 30 is formed into an L-shape along the cylindrical axis. The arm 30 supports the door-side end of the transition portion 10A with a wire inlet 30a at one end, and pulls the transition portion 10A into the cylinder from the wire inlet 30a (FIGS. 1 to 4). The arm 30 then passes the door-side electric wire routing portion 10B through the cylinder and pulls it out of the cylinder from a wire outlet 30b at the other end (FIGS. 1 to 4).

[0020] In the transition portion 10A, for example, the electric wires are covered with a corrugated tube 11 (FIGS. 1 to 4). This corrugated tube 11 is formed into a cylindrical shape and has a bellows portion 12 on its outer circumferential surface, with annular recesses 12a and annular protrusions 12b alternately arranged in the axial direction, and its end is supported by an electric wire introduction port 30a at one end of an arm 30 (FIGS. 3 and 4). For example, at one end of the arm 30, a plurality of semicircular ribs (not shown) are arranged on its inner circumferential surface, and the ribs are fitted into the recesses 12b at the end of the corrugated tube 11, thereby supporting the end of the corrugated tube 11 at the door side end of the transition portion 10A.

[0021] Here, when the sliding door 500 is fully closed, the transition portion 10A is pulled into the inside of the door trim 501 through a position below the lower end 501a of the door trim 501 and below the vehicle (FIG. 1). After being pulled into the inside of the door trim 501, the transition portion 10A is routed toward the wire inlet 30a at one end of the arm 30. When the sliding door 500 is fully closed, the transition portion 10A shown here is pulled into the inside of the door trim 501 and then routed in the closing direction of the sliding door 500 (here, toward the front of the vehicle) and toward the top of the vehicle. On the other hand, when the sliding door 500 is fully opened, the transition portion 10A shown here is pulled into the inside of the door trim 501 and then routed in the opening direction of the sliding door 500 (here, toward the rear of the vehicle) and toward the top of the vehicle. The transition portion 10A moves along the lower end 501a of the door trim 501, for example, in conjunction with the opening and closing operation of the sliding door 500.

[0022] For example, when the sliding door 500 is fully closed, the arm 30 shown here has a wire inlet 30a at one end that opens in the door opening direction and toward the top of the vehicle, and a wire outlet 30b at the other end that opens in the door closing direction and toward the top of the vehicle (FIGS. 1 and 3). Therefore, when the sliding door 500 is fully closed, the door-side wire routing portion 10B is drawn out from the wire outlet 30b in the door closing direction and toward the top of the vehicle. Furthermore, when the sliding door 500 is fully open, the arm 30 shown here has a wire inlet 30a at one end that opens in the door closing direction and toward the bottom of the vehicle, and a wire outlet 30b at the other end that opens in the door opening direction and toward the bottom of the vehicle (FIGS. 2 and 4). Therefore, when the sliding door 500 is fully open, the door-side wire routing portion 10B is drawn out from the wire outlet 30b in the door opening direction and toward the bottom of the vehicle.

[0023] The power supply device for sliding door 1 rotates the arm 30 around the axis of the rotation shaft 41 while following the change in the wiring path of the crossover section 10A linked to the opening and closing operation of the sliding door 500. In this power supply device for sliding door 1, the arm 30 is rotated around the axis of the rotation shaft 41 by the force received at one end from the crossover section 10A in accordance with the change in the wiring path of the crossover section 10A.

[0024] The door-side protector 40 supports the other end of the arm 30 so that it can rotate around the axis of a rotation shaft 41 (FIGS. 1 to 4). The rotation shaft 41 is located adjacent to the electric wire outlet 30b, which faces upward toward the vehicle, on the door opening direction side when the sliding door 500 is fully closed. The electric wire outlet 30b rotates around the axis of the rotation shaft 41 in accordance with the rotation of the arm 30. When the sliding door 500 is opened from the fully closed state, the rotation shaft 41 rotates the electric wire outlet 30b counterclockwise. The electric wire outlet 30b shown here is located in the door opening direction and upward toward the vehicle with respect to the rotation shaft 41 when the sliding door 500 is fully open, so that it opens in the door opening direction and facing downward toward the vehicle.

[0025] The door-side protector 40 is provided with a shaft portion 42 disposed on the door opening direction side of the rotary shaft 41, and a harness fixing portion 43 disposed on the door opening direction side of the shaft portion 42 (FIGS. 1 to 4). The door-side protector 40 routes the door-side electric wire routing portion 10B drawn out from the electric wire drawing-out port 30b to the harness fixing portion 43.

[0026] When the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is pulled out from the electric wire outlet 30b, passes between the rotating shaft 41 and the shaft portion 42, and is routed in an S-shape to the harness fixing portion 43 and fixed to the harness fixing portion 43 (FIGS. 1 to 4). In other words, when the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is routed in an S-shape with the rotating shaft 41 and the shaft portion 42 located inside the respective curved portions between the electric wire outlet 30b and the harness fixing portion 43. The door-side electric wire routing portion 10B is routed toward an object to be electrically connected that is located beyond the harness fixing portion 43.

[0027] The shaft 42 is preferably provided on the door opening side of the rotary shaft 41 and below the vehicle so that the door-side electric wiring portion 10B is routed in an S-shape when the sliding door 500 is fully closed. The shaft 42 shown here is formed in a cylindrical shape in consideration of contact with the door-side electric wiring portion 10B, thereby suppressing a decrease in durability of the door-side electric wiring portion 10B.

[0028] The harness fixing portion 43 is preferably provided on the door opening direction side of the shaft portion 42 and above the vehicle so that the door-side electric wiring portion 10B is routed in an S-shape when the sliding door 500 is fully closed. For example, the harness fixing portion 43 is provided with two through holes 43a, 43b, and the door-side electric wiring portion 10B is fixed with a cable tie 51 passed through the two through holes 43a, 43b (FIGS. 1 to 4).

[0029] When the sliding door 500 is opened from a fully closed state, the electric wire outlet 30b opens toward a gap between the rotation shaft 41 and the shaft portion 42. When the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is routed in an S-shape from the electric wire outlet 30b and fixed to the door-side protector 40 by the harness fixing portion 43 at the end. Therefore, when the sliding door 500 is opened from a fully closed state and the arm 30 rotates, the door-side electric wire routing portion 10B is pushed from the electric wire outlet 30b side, causing slack between the electric wire outlet 30b and the harness fixing portion 43 (FIGS. 2 and 4). Here, the curved portion of the door-side electric wire routing portion 10B surrounding the shaft portion 42 is slackened downward of the vehicle, thereby absorbing the excess length of the wire harness 10 when the sliding door 500 is opened or closed (FIGS. 1 to 4). In other words, when the sliding door 500 is opened or closed, the wire harness 10 can absorb the excess length when the door is opened or closed by slackening the wire harness 10 between the wire outlet 30b in the door-side wire routing portion 10B and the harness fixing portion 43.

[0030] When the door is fully closed, the door-side electric wiring portion 10B is preferably fixed by the harness fixing portion 43 so as to be the shortest with the rotating shaft 41 and the shaft portion 42 placed inside the respective curved portions of the S-shape. This allows the power supply device 1 for sliding door to minimize the area where slack occurs in the door-side electric wiring portion 10B when the sliding door 500 is opened or closed (i.e., the area where excess length is absorbed). For example, in the power supply device 1 for sliding door, in order to route the door-side electric wiring portion 10B in an S-shape along such a shortest path, it is preferable that the rotating shaft 41 and the shaft portion 42 are spaced apart from each other in the door opening / closing direction of the sliding door 500, and the harness fixing portion 43 is located closer to the door opening direction than the shaft portion 42 and above the vehicle.

[0031] Furthermore, in this power supply device for sliding door 1, when the sliding door 500 is fully closed, the S-shape of the door-side electric wire routing portion 10B is shortened, and the arm 30 is not rotated in a direction that pulls the shortest S-shaped door-side electric wire routing portion 10B. Therefore, in this power supply device for sliding door 1, the arm 30 does not receive unnecessary force from the S-shaped door-side electric wire routing portion 10B, and therefore the arm 30 can be smoothly rotated around the axis of the rotation shaft 41.

[0032] The door-side protector 40 is fixed to the door inner panel at two fixing portions 44, 45 (FIGS. 1 to 4). For example, the two fixing portions 44, 45 shown here are through-holes through which male screw portions are inserted, and are fixed to the door inner panel by screws.

[0033] As described above, the power supply device for sliding door 1 of this embodiment has a simple structure in which only one arm 30 rotates around the rotation shaft 41 in accordance with changes in the wiring path of the transition portion 10A. Therefore, the power supply device for sliding door 1 contributes to miniaturization, weight reduction, and cost reduction. Furthermore, the power supply device for sliding door 1 of this embodiment routes the door-side electric wire routing portion 10B in an S-shape between the electric wire outlet 30b and the harness fixing portion 43 when the sliding door 500 is fully closed. When the sliding door 500 is opened from the fully closed state to the fully open state, the door-side electric wire routing portion 10B is slackened to absorb the excess length. Therefore, the power supply device for sliding door 1 can absorb the excess length of the wire harness 10 when the sliding door 500 is opened and closed with such a simple structure, which also contributes to miniaturization, weight reduction, and cost reduction.

[0034] Furthermore, in the power supply device 1 for sliding door of this embodiment, the door-side electric wire routing section 10B is routed in an S-shape between the electric wire outlet 30b and the harness fixing section 43 so as to be the shortest when the door is fully closed, and the arm 30 is not rotated in a direction that pulls this shortest S-shaped door-side electric wire routing section 10B, so that the arm 30 can be smoothly rotated around the axis of the rotation shaft 41. [Explanation of symbols]

[0035] 1. Power supply device for sliding doors 10 Wire harness 10A Crossover 10B Door side electrical wiring section 20 Body side protector 30 Arm 30a wire entry port 30b Wire outlet 40 Door side protector 41 Rotation axis 42 Shaft 43 Harness fixing part 500 sliding door B body

Claims

1. a wire harness including a bridge portion that is bridged between a vehicle body and a sliding door, a vehicle body-side electric wire routing portion that is routed at a tip of a vehicle body-side end of the bridge portion, and a door-side electric wire routing portion that is routed at a tip of a door-side end of the bridge portion; a vehicle body side protector that is fixed to the vehicle body, holds the vehicle body side end of the transition portion, and swings the transition portion in conjunction with the opening and closing operation of the sliding door; a cylindrical arm that supports the door-side end of the transition portion at one end and passes the door-side electric wire routing portion through a cylinder and draws the door-side electric wire routing portion out of the cylinder through an electric wire drawing port at the other end; a door-side protector that is fixed to a door inner panel of the sliding door, that pivotally supports the other end of the arm so that the other end can rotate about an axis of a rotation shaft, and that routes the door-side electric wire routing portion that is drawn out from the electric wire drawing-out port; Equipped with the rotary shaft is disposed adjacent to the electric wire outlet opening, which faces upward of the vehicle, on a door opening direction side of the sliding door when the sliding door is fully closed, and rotates the electric wire outlet opening counterclockwise when the sliding door is opened from a fully closed state; The door-side protector is provided with a shaft portion disposed on the door opening direction side of the rotation shaft, and a harness fixing portion disposed on the door opening direction side of the shaft portion, When the door is fully closed, the door-side electric wire routing portion is pulled out from the electric wire outlet, then passes between the rotating shaft and the shaft portion, and is routed in an S-shape to the harness fixing portion and fixed to the harness fixing portion.

2. 2. The power supply device for a sliding door according to claim 1, wherein the wire harness absorbs excess length between the wire outlet in the door-side wire routing portion and the harness fixing portion when the sliding door is opened or closed.

3. the shaft portion is provided on the door opening direction side and below the vehicle relative to the rotation shaft, 3. The power supply device for a sliding door according to claim 1, wherein the harness fixing portion is provided on the door opening direction side of the shaft portion and above the vehicle.

4. 3. The power supply device for a sliding door according to claim 1, wherein the door-side electric wiring portion is fixed by the harness fixing portion so that the length is shortest when the door is fully closed, with the rotation axis and the shaft portion being placed inside each curved portion of the S-shape.

Images