Power supply device for slide door

Abstract

To provide a power supply device for a slide door whose portion at the slide door side can be downsized.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. In the door-side protector, a harness fixing part 42 that fixes the door-side electric wire arrangement part pulled out from the electric wire pull-out port is provided on the opposite side of the rotating shaft when viewed from the electric wire pull-out port at the time when the slide door 500 is fully closed. The door-side electric wire arrangement part forms a single spiral shape along the shaft of the rotating shaft, between the electric wire pull-out port and the harness fixing part, when the door is fully closed. When the fully-closed slide door is opened, the rotating shaft rotates the electric wire pull-out port, in a direction in which the door-side electric wire arrangement part pulled out from the electric wire pull-out port is pushed out toward 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, the electrical connection is performed by a wire harness, which supplies power to the sliding door side via a bridge section that spans between the vehicle body and the sliding door. For example, Patent Document 1 listed below discloses this type of power supply device for a sliding door. Here, the wire harness supplies power to electrical connection objects on the sliding door 500 side via a door-side electric wiring section that is routed beyond the door-side end of the bridge section. In the power supply device for a sliding door, the routing path of the door-side electric wiring section changes as the sliding door is opened and closed. Therefore, it is necessary to accommodate the excess length that occurs due to the change in the path of the door-side electric wiring section while preventing the sliding door side from becoming larger. For example, in the power supply device for a sliding door described in Patent Document 2 below, the door-side electric wiring portion of a flat wire harness that is wound in multiple layers around a fixed shaft is wound up and then unwound, thereby absorbing the excess length of the door-side electric wiring portion while preventing the sliding door from becoming larger. Furthermore, in the power supply device for a sliding door, the path of the door-side electric wiring portion is restricted by, for example, a curved protector to protect the door-side electric wiring portion so that it does not interfere with surrounding components (Patent Document 3 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-088355 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-325348 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-281651 Summary of the Invention [Problem to be solved by the invention]

[0004] In a conventional power supply device for a sliding door, a flat wire harness with spring properties is required to wind up and unwind the door-side electric wiring portion in response to the opening and closing of the sliding door. Therefore, when using an electric wire whose core wire is covered with a coating, it is difficult to achieve such a spring-like movement in response to the opening and closing of the sliding door, and there is room for improvement in terms of reducing the size of the sliding door.

[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 on the sliding door side. [Means for solving the problem]

[0006] The present invention relates to a wire harness having 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 vehicle body-side protector fixed to a door inner panel of the sliding door, pivotally supporting the other end of the arm so that it can rotate about a rotation axis, and drawing it out of the electric wire drawing outlet. and a door-side protector that routes the door-side electric wire routing portion drawn out from the electric wire outlet, wherein the door-side protector is provided with a harness fixing portion that fixes the door-side electric wire routing portion drawn out from the electric wire outlet on the opposite side of the rotation shaft as viewed from the electric wire outlet when the sliding door is fully closed, and the door-side electric wire routing portion forms a single spiral shape around the axis of the rotation shaft between the electric wire outlet and the harness fixing portion when the sliding door is fully closed, and the rotation shaft rotates the electric wire outlet in a direction that pushes the door-side electric wire routing portion drawn out from the electric wire outlet toward the harness fixing portion when the sliding door is opened from the fully closed state. [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, in the power supply device for sliding door according to the present invention, when the sliding door is fully closed, the door-side electric wiring portion forms a single spiral shape around the rotation axis between the electric wire outlet and the harness fixing portion. Therefore, when the sliding door is opened from the fully closed state to the fully open state, the door-side electric wiring portion is slackened and absorbs the excess length. 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 a linear shape along the cylindrical axis direction. The arm 30 supports the door-side end of the transition portion 10A with a wire inlet 30a at one end thereof, 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 in conjunction with the opening and closing operation of the sliding door 500, for example.

[0022] The power supply device for sliding door 1 changes the wiring path of the crossover section 10A in conjunction with the opening and closing of the sliding door 500, and 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 (FIGS. 1 to 4). 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.

[0023] The door-side protector 40 supports the other end of the arm 30 so as to be rotatable about the axis of a rotation shaft 41 (FIGS. 1 to 4). The door-side protector 40 routes the door-side electric wiring portion 10B drawn out from the electric wire outlet 30b of the arm 30. The door-side protector 40 is provided with a harness fixing portion 42 that fixes the door-side electric wiring portion 10B drawn out from the electric wire outlet 30b of the arm 30 (FIGS. 1 to 4). The harness fixing portion 42 is provided on the opposite side of the rotation shaft 41 when viewed from the electric wire outlet 30b when the sliding door 500 is fully closed. For example, the harness fixing portion 42 is provided with two through holes (not shown), and the door-side electric wiring portion 10B is fixed with a cable tie 51 that passes through the two through holes (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 42 thereof and fixes it at the harness fixing portion 42.

[0024] When the sliding door 500 is fully closed, the door-side electric wire routing portion 10B forms a single spiral shape around the axis of the rotation shaft 41 between the electric wire outlet 30b and the harness fixing portion 42 (FIGS. 1 and 3).

[0025] Here, the electric wire outlet 30b rotates around the axis of the rotation shaft 41 in response to the rotation of the arm 30. When the sliding door 500 is opened from a fully closed state, the rotation shaft 41 rotates the electric wire outlet 30b in a direction that pushes the door-side electric wire routing portion 10B, which is pulled out from the electric wire outlet 30b, toward the harness fixing portion 42. 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 42 (FIGS. 2 and 4). Here, by slackening the door-side electric wire routing portion 10B therebetween, the excess length of the wire harness 10 is absorbed 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 42.

[0026] The rotating shaft 41 of this embodiment is disposed adjacent to the electric wire outlet 30b facing upward in the door opening direction when the sliding door 500 is fully closed. When the sliding door 500 is opened from the fully closed state, the rotating shaft 41 rotates the electric wire outlet 30b in a direction opposite to the spiral direction of the door-side electric wire routing portion 10B (i.e., the direction from the harness fixing portion 42 side of the door-side electric wire routing portion 10B toward its axis center around the axis of the rotating shaft 41). The harness fixing portion 42 is disposed closer to the door closing direction of the sliding door 500 than the electric wire outlet 30b when the sliding door 500 is fully closed.

[0027] Specifically, 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 bottom 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. When the sliding door 500 is opened from a fully closed state, the door-side wire routing portion 10B is pushed in the door opening direction and toward the bottom of the vehicle, generating slack between the wire outlet 30b and the harness fixing portion 42, thereby absorbing the excess length of the wire harness 10 when the sliding door 500 is opened or closed (FIGS. 1 to 4).

[0028] When the door is fully closed, the door-side electric wiring portion 10B is preferably fixed by the harness fixing portion 42 so as to have the shortest single spiral 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 (i.e., the area where excess length is absorbed) when the sliding door 500 is opened or closed.

[0029] In this manner, in the power supply device for sliding door 1 of this embodiment, the sliding door 500 is opened from a fully closed state, and the arm 30 is rotated about the rotation shaft 41 to slacken the door-side electric wire routing portion 10B drawn out from the electric wire outlet 30b. Therefore, in this power supply device for sliding door 1, a restricting wall 43 is provided to prevent the door-side electric wire routing portion 10B from interfering with other surrounding components due to a change in path caused by the slack (FIGS. 1 to 4). This restricting wall 43 is provided on the door-side protector 40 and covers the arc-shaped portion of the spiral door-side electric wire routing portion 10B from the outside in the radial direction.

[0030] The door-side electric wire routing portion 10B spirals around the rotation shaft 41. Therefore, the restricting wall 43 has an arc shape that continues around the axis of the rotation shaft 41. Here, the restricting wall 43 includes a first restricting wall 43A and a second restricting wall 43B (FIGS. 1 to 4).

[0031] The first restricting wall 43A is a wall portion formed in a semicircular arc shape with the rotation shaft 41 as its axis. When the sliding door 500 is fully closed, one end of the first restricting wall 43A faces the electric wire inlet 30a of the arm 30 with a gap therebetween (FIGS. 1 and 3). The second restricting wall 43B is connected in an arc shape from the other end of the first restricting wall 43A in the circumferential direction (i.e., the end portion located in the opposite direction to the spiral direction of the door-side electric wire routing portion 10B) toward the harness fixing portion 42 (FIGS. 1 to 4). The second restricting wall 43B is formed as an arc-shaped wall portion such that the distance from the rotation shaft 41 to each point in the circumferential direction is greater than the radius of the first restricting wall 43A. In the sliding door power supply device 1, the space between the second restricting wall 43B and the rotation shaft 41 is a slack generation region (excess length absorption region) of the door-side electric wire routing portion 10B. Therefore, in this power supply device 1 for sliding doors, when the sliding door 500 is opened from a fully closed state, the door-side wire routing portion 10B is slackened in the space between the second restricting wall 43B and the rotating shaft 41, thereby absorbing the excess length of the wire harness 10.

[0032] Furthermore, in this power supply device for sliding door 1, when the sliding door 500 is fully closed, the single spiral 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 single spiral shape of the door-side electric wire routing portion 10B. Therefore, in this power supply device for sliding door 1, the arm 30 is not subjected to unnecessary force from the spiral-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.

[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 section 10A. Therefore, the power supply device for sliding door 1 contributes to miniaturization, weight reduction, and cost reduction. Furthermore, in the power supply device for sliding door 1 of this embodiment, when the sliding door 500 is fully closed, the door-side electric wire routing section 10B forms a single spiral shape centered on the rotation shaft 41 between the electric wire outlet 30b and the harness fixing section 42. Therefore, when the sliding door 500 is opened from the fully closed state to the fully open state, the door-side electric wire routing section 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 doors of this embodiment, the door-side electric wire routing section 10B is formed into a single spiral shape that is the shortest between the electric wire outlet 30b and the harness fixing section 42 when the door is fully closed, and the arm 30 is not rotated in a direction that pulls this shortest spiral-shaped door-side electric wire routing section 10B, so that the arm 30 can be rotated smoothly 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 Harness fixing part 43 Regulatory barriers 43A First Restriction Wall 43B Second Regulatory Wall 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 door-side protector is provided with a harness fixing portion that fixes the door-side electric wire routing portion drawn out from the electric wire drawing-out opening, on the opposite side of the rotation shaft as viewed from the electric wire drawing-out opening when the sliding door is fully closed, the door-side electric wire routing portion forms a single spiral shape around the axis of the rotation shaft between the electric wire drawing outlet and the harness fixing portion when the sliding door is fully closed, The power supply device for a sliding door is characterized in that, when the sliding door is opened from a fully closed state, the rotating shaft rotates the electric wire outlet in a direction that pushes the door-side electric wire routing portion, which is pulled out from the electric wire outlet, toward 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 rotary 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 in a direction opposite to the spiral direction of the door-side electric wire routing portion when the sliding door is opened from the fully closed state; 3. The power supply device for a sliding door according to claim 1, wherein the harness fixing portion is provided on the door closing direction side of the sliding door relative to the electric wire outlet.

4. 3. The power supply device for a sliding door according to claim 1, wherein the door-side protector is provided with a restricting wall that radially covers from the outside an arc-shaped portion of the spiral-shaped door-side electric wire routing portion.

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