Power supply device for sliding door

Abstract

The power supply device for the sliding door realizes miniaturization of the sliding door side. The present invention is provided with: a cylindrical arm (30) that supports a door-side end of a straddling section (10A) at one end, and that causes a door-side electric wire routing section (10B) to pass through the inside of the cylinder and to be led out of the cylinder from an electric wire lead-out opening (30b) at the other end; and a door-side protector (40) that pivotally supports the other end of the arm so as to be rotatable about a rotating shaft (41), the door-side protector being provided with a wire harness fixing section (42) that fixes the door-side wire wiring section drawn out from the wire outlet, and the wire harness fixing section (42) fixing the door-side wire wiring section when viewed from the wire outlet when the door of the sliding door (500) is fully closed. The wire harness fixing part is arranged on the opposite side of the rotating shaft, and the door-side electric wire routing part is in a spiral shape around one circle around the rotating shaft between the electric wire leading-out port and the wire harness fixing part when the door is fully closed, and the rotating shaft rotates around the rotating shaft when the sliding door is opened from the fully closed state. The wire outlet is rotated in a direction in which the door-side wire routing portion drawn out from the wire outlet is pushed out toward the wire harness fixing portion.

Description

Technical Field

[0001] This invention relates to a power supply device for sliding doors. Background Technology

[0002] Conventionally, vehicles such as automobiles are equipped with sliding door power supply devices that electrically connect a power source (such as a secondary battery) on the vehicle body side to switches, electrical components, etc., on the sliding door side. In these sliding door power supply devices, the electrical connection is achieved by a wiring harness, and power is supplied to the sliding door side via a cross-connection section erected between the vehicle body and the sliding door. For example, such a sliding door power supply device is disclosed in Patent Document 1 below. Here, the wiring harness supplies power to the electrical connection object on the sliding door 500 side via a door-side wiring section laid at the end of the cross-connection section on the door side. In the sliding door power supply device, since the wiring path of the door-side wiring section changes with the opening and closing of the sliding door, it is necessary to absorb the excess length generated by the change in the path of the door-side wiring section while suppressing the increase in the size of the sliding door side. For example, in the power supply device for sliding doors described in Patent Document 2 below, the door-side wiring portion of the flat wire harness wound multiple times around a fixed shaft is either rolled up or unrolled, thereby suppressing the increase in the size of the sliding door side and absorbing the excess length of the door-side wiring portion. Furthermore, in the power supply device for sliding doors, to prevent the door-side wiring portion from interfering with surrounding components, a curved protector is used, for example, to restrict the path of the door-side wiring portion and protect it (Patent Document 3 below).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-088355

[0006] Patent Document 2: Japanese Patent Application Publication No. 2002-325348

[0007] Patent Document 3: Japanese Patent Application Publication No. 2002-281651 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, in existing power supply devices for sliding doors, flexible flat wire harnesses are required to roll up or unroll the door-side wiring section in response to the opening and closing of the sliding door. Therefore, when using wires with a sheath covering the core wire, it is difficult to perform such a spring-like action in response to the opening and closing of the sliding door, leaving room for improvement in miniaturizing the sliding door's dimensions.

[0010] Therefore, the object of the present invention is to provide a power supply device for a sliding door that can achieve miniaturization of the sliding door side.

[0011] Methods for solving problems

[0012] The sliding door power supply device of the present invention is characterized by comprising: a wiring harness having a spanning portion spanning between the vehicle body and the sliding door, a vehicle-side wiring portion disposed at the end of the vehicle-side end of the spanning portion, and a door-side wiring portion disposed at the end of the door-side end of the spanning portion; a vehicle-side protector fixed to the vehicle body and holding the vehicle-side end of the spanning portion, and causing the spanning portion to swing in conjunction with the opening and closing action of the sliding door; a cylindrical arm supporting the door-side end of the spanning portion at one end, and allowing the door-side wiring portion to pass through the cylinder and exit from the wire outlet at the other end of the cylinder to the outside of the cylinder; and a door-side protector fixed to the inner panel of the sliding door, and providing a power supply to the other end of the arm. The other end of the arm is supported by a rotating mechanism that allows it to rotate around a rotation axis, and the door-side wiring portion leading out from the wire outlet is wound around it. The door-side protector is provided with a wire harness fixing part that fixes the door-side wiring portion leading out from the wire outlet. When viewed from the wire outlet when the sliding door is fully closed, the wire harness fixing part is located on the side opposite to the rotation axis. When the sliding door is fully closed, the door-side wiring portion forms a spiral shape around the rotation axis between the wire outlet and the wire harness fixing part. When the sliding door is opened from the fully closed state, the rotation axis causes the wire outlet to rotate in the direction that pushes the door-side wiring portion leading out from the wire outlet toward the wire harness fixing part.

[0013] Invention Effects

[0014] The power supply device for sliding doors of the present invention has a simple structure in which only one arm rotates around a rotation axis in response to changes in the wiring path of the cross-mounted part. Therefore, this power supply device for sliding doors contributes to miniaturization, weight reduction, and cost reduction. Furthermore, in the power supply device for sliding doors of the present invention, when the sliding door is fully closed, the door-side wiring portion between the wire outlet and the wire harness fixing part is in a spiral shape around the rotation axis. Therefore, when the sliding door is opened from the fully closed state to the fully open state, the door-side wiring portion relaxes and absorbs excess length. Therefore, this power supply device for sliding doors can absorb excess wire harness length when the sliding door is opened and closed with such a simple structure, thus also contributing to miniaturization, weight reduction, and cost reduction. Attached Figure Description

[0015] Figure 1This is a plan view of the power supply device for the sliding door in the embodiment, viewed from inside the vehicle, showing the sliding door in the fully closed position.

[0016] Figure 2 This is a plan view of the power supply device for the sliding door in the embodiment, viewed from inside the vehicle, showing the sliding door in the fully open position.

[0017] Figure 3 It 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.

[0018] Figure 4 It 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.

[0019] Explanation of reference numerals in the attached figures

[0020] 1. Power supply device for sliding doors

[0021] 10 Wire Harness

[0022] 10A Cross-department

[0023] 10B Door Side Wiring Section

[0024] 20. Vehicle side protectors

[0025] 30 arms

[0026] 30A wire inlet

[0027] 30b Wire Outlet

[0028] 40 Door side protector

[0029] 41 Rotation axis

[0030] 42 Wire Harness Fixing Part

[0031] 43 Restriction Wall

[0032] 43A First Restriction Wall

[0033] 43B Second Restriction Wall

[0034] 500 sliding doors

[0035] B body Detailed Implementation

[0036] Hereinafter, embodiments of the power supply device for sliding doors according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] [Example]

[0038] based on Figures 1 to 4One embodiment of the power supply device for sliding doors of the present invention will be described.

[0039] Figure 1 Reference numeral 1 in the accompanying drawings indicates the power supply device for the sliding door in this embodiment.

[0040] The power supply unit 1 for the sliding door is mounted on a vehicle such as an automobile, and supplies power from a power source on the B side of the vehicle body to the sliding door 500, which can reciprocate in the sliding direction relative to the B side of the vehicle body. Figure 1 as well as Figure 2 The sliding door 500 is, for example, located on the side of the vehicle and moves back and forth in the vehicle's longitudinal direction. The power supply unit 1 for the sliding door, for example, supplies power from a power source (such as a secondary battery) on the vehicle body side B to an electrical connection object (not shown) on the sliding door 500 side. This electrical connection object refers to an object installed on the sliding door 500, such as an electrical component or a switch. For example, the electrical components of the sliding door 500 include a drive mechanism for driving the power window, a speaker, etc. Furthermore, the switches of the sliding door 500 include switches for operating the power window, switches for operating the power seat, etc.

[0041] The power supply device 1 for sliding doors includes a wiring harness 10 ( Figure 1 and Figure 2 The wiring harness 10 allows one end to be directly or indirectly electrically connected to a power source on the vehicle body B side, and the other end to be directly or indirectly electrically connected to an object to be electrically connected on the sliding door 500 side. Therefore, the wiring harness 10 has a bridging portion 10A, which is a portion existing between the one end and the other end, and is installed between the vehicle body B and the sliding door 500. Figure 1 and Figure 2 ).

[0042] In this wiring harness 10, one end on the vehicle body B side exists at the end of one end of the spanning section 10A (hereinafter referred to as the "vehicle body side end"), and the other end on the sliding door 500 side exists at the end of the other end of the spanning section 10A (hereinafter referred to as the "door side end"). Therefore, the wiring harness 10 has a vehicle body side wiring section (not shown) that is laid at the end of the spanning section 10A at the vehicle body side end and a door side wiring section 10B that is laid at the end of the spanning section 10A at the door side end. Figure 1 and Figure 2 ).

[0043] In the wiring harness 10, the body side end of the cross-mounted part 10A is assembled to the body side B. Figure 1 and Figure 2 The sliding door power supply device 1 includes a protector (hereinafter referred to as "body side protector") 20 that is fixed to the vehicle body B and held at the vehicle body side end of the spanning part 10A. Figure 1 and Figure 2The body side end of the cross-mounted part 10A is assembled to the body side B via the body side protector 20.

[0044] The vehicle side protector 20 is molded from insulating materials such as synthetic resin. Furthermore, the vehicle side protector 20, in conjunction with the opening and closing action of the sliding door 500, causes the spandrel 10A to swing. The vehicle side protector 20 is positioned in the vertical direction of the vehicle body B on or near the floor surface FL. Figure 1 and Figure 2 ).

[0045] Additionally, in the wiring harness 10, the door-side end of the cross-mounted part 10A is assembled to the sliding door 500 side ( Figure 1 and Figure 2 In this wiring harness 10, the cross-connection portion 10A is introduced between the inner panel (not shown) of the sliding door 500 and the door trim 501 (i.e., the inner side of the door trim 501), and the door side end is assembled to the inner panel side. Figure 1 and Figure 2 The power supply device 1 for sliding doors includes an arm 30 that supports the door-side end of the spanning section 10A at one end. Figures 1 to 4 Therefore, the power supply device 1 for the sliding door includes a protector (hereinafter referred to as the "door side protector") 40 fixed to the inner panel of the door and supporting the other end of the arm 30. Figures 1 to 4 Furthermore, only a portion of the door interior 501 shown in the figure is depicted.

[0046] The arm 30 and the door side protector 40 are formed from insulating materials such as synthetic resin. When viewed along the vertical direction of the vehicle, the arm 30 and the door side protector 40 are positioned higher on the vehicle than the body side protector 20. Furthermore, when viewed from the opening and closing direction of the sliding door 500, the arm 30 and the door side protector 40 are positioned in the closing direction of the sliding door 500 (in this case, in front of the vehicle) when the sliding door 500 is fully closed, and in the opening direction of the sliding door 500 (in this case, in front of the vehicle) when the sliding door 500 is fully open.

[0047] The arm 30 is formed in a cylindrical shape. The arm 30 is formed in a straight line shape along its cylindrical axis. The arm 30 supports the door-side end of the spanning section 10A at one end via a wire inlet 30a, through which the spanning section 10A is introduced into the cylinder. Figures 1 to 4 Furthermore, the arm 30 allows the door-side wiring section 10B to pass through the inside of the cylinder and exit from the wiring outlet 30b at the other end to the outside of the cylinder. Figures 1 to 4 ).

[0048] In the cross-section 10A, for example, the wires are covered by the corrugated pipe 11 ( Figures 1 to 4The bellows 11 is formed into a cylindrical shape, and its outer circumferential surface has a corrugated portion 12 formed by alternating annular recesses 12a and annular protrusions 12b in the axial direction, so that its end is supported by an electrical wire inlet 30a at one end of the arm 30. Figure 3 and Figure 4 For example, at one end of the arm 30, a plurality of semi-circular ribs (not shown) are arranged on its inner circumferential surface. By embedding the ribs into the recess 12b at the end of the bellows 11, the end of the bellows 11 is supported at the door-side end of the span section 10A.

[0049] Here, when the sliding door 500 is fully closed, the cross-mounted part 10A passes through the lower end 501a of the door trim 501 and is introduced into the inside of the door trim 501 near the lower side of the vehicle. Figure 1 The mounting bracket 10A, after being introduced into the inside of the door trim 501, is positioned towards the wire inlet 30a at one end of the arm 30. When the sliding door 500 is fully closed, the mounting bracket 10A, after being introduced into the inside of the door trim 501, is positioned towards the closing direction of the sliding door 500 (in this case, the front of the vehicle) and above the vehicle. Conversely, when the sliding door 500 is fully open, the mounting bracket 10A, after being introduced into the inside of the door trim 501, is positioned towards the opening direction of the sliding door 500 (in this case, the rear of the vehicle) and above the vehicle. The mounting bracket 10A moves, for example, along the lower end 501a of the door trim 501 in conjunction with the opening and closing action of the sliding door 500.

[0050] The power supply device 1 for the sliding door is linked to the opening and closing action of the sliding door 500 to change the wiring path of the cross-mounted part 10A, causing the arm 30 to rotate around the rotation axis 41 while following the change in the wiring path of the cross-mounted part 10A. Figures 1 to 4 In the power supply device 1 for the sliding door, the arm 30 is rotated around the rotation axis 41 by the force received from the spanning part 10A at one end, according to the change of the wiring path of the spanning part 10A.

[0051] The door side protector 40 is axially supported in a manner that allows the other end of the arm 30 to rotate about the rotation axis 41. Figures 1 to 4 Furthermore, the door-side protector 40 winds the door-side wire wiring section 10B extending from the wire outlet 30b of the arm 30. The door-side protector 40 is provided with a wire harness fixing part 42 that secures the door-side wire wiring section 10B extending from the wire outlet 30b of the arm 30. Figures 1 to 4 Viewed from the wire outlet 30b of the sliding door 500 when the door is fully closed, the wire harness fixing part 42 is located on the side opposite to the rotation axis 41. For example, the wire harness fixing part 42 has two through holes (not shown), and the door-side wire wiring part 10B is fixed by a cable tie 51 passing through the two through holes. Figures 1 to 4 In the door-side protector 40, the door-side wire wiring section 10B, which is led out from the wire outlet 30b, is wound around the wire harness fixing section 42 and fixed by the wire harness fixing section 42.

[0052] When the sliding door 500 is fully closed, the wiring section 10B on the door side forms a spiral shape that runs around the rotation axis 41 between the wire outlet 30b and the wire harness fixing part 42. Figure 1 and Figure 3 ).

[0053] Here, the wire outlet 30b rotates about the rotation axis 41 according to the rotation of the arm 30. When the sliding door 500 is opened from the fully closed state, the rotation axis 41 causes the wire outlet 30b to rotate in the direction that the door-side wire wiring portion 10B, from which the wire outlet 30b is led, is pushed out toward the wire harness fixing portion 42. Therefore, when the sliding door 500 is opened from the fully closed state and the arm 30 rotates, the door-side wire wiring portion 10B is pushed from the wire outlet 30b side, and slack is generated between the wire outlet 30b and the wire harness fixing portion 42. Figure 2 and Figure 4 Here, by slackening the door-side wiring section 10B therebetween, excess length of the wiring harness 10 during the opening and closing of the sliding door 500 is absorbed. Figures 1 to 4 That is, when the sliding door 500 is opened and closed, the wiring harness 10 can absorb the excess length when the door is opened and closed by slackening the wire lead-out 30b in the door-side wiring section 10B to the wiring harness fixing section 42.

[0054] In this embodiment, the rotating shaft 41 is positioned adjacent to the wire outlet 30b facing upwards towards the vehicle on the door opening side when the sliding door 500 is fully closed. Furthermore, when the sliding door 500 is opened from the fully closed state, the rotating shaft 41 causes the wire outlet 30b to rotate in the opposite direction to the spiral direction of the door-side wiring section 10B (i.e., the direction of the door-side wiring section 10B from the wire harness fixing section 42 side toward its axis of rotation 41). The wire harness fixing section 42 is positioned further away from the door closing side of the sliding door 500 than the wire outlet 30b when the sliding door 500 is fully closed.

[0055] Specifically, when the sliding door 500 is fully closed, the arm 30 shown here has one end of its wire inlet 30a facing the door opening direction and opening below the vehicle, and the other end of its wire outlet 30b facing the door closing direction and opening above the vehicle. Figure 1 and Figure 3Therefore, when the sliding door 500 is fully closed, the wiring section 10B on the door side extends from its wiring outlet 30b toward the door closing direction and above the vehicle. Additionally, when the sliding door 500 is fully open, the arm 30 shown here has its wiring inlet 30a at one end facing the door closing direction and opening below the vehicle, and its wiring outlet 30b at the other end facing the door opening direction and opening below the vehicle. Figure 2 and Figure 4 Therefore, when the sliding door 500 is fully open, the door-side wiring section 10B extends from the wire outlet 30b toward the door opening direction and below the vehicle. When the sliding door 500 is opened from the fully closed state, the door-side wiring section 10B is pressed toward the door opening direction and below the vehicle, creating slack between the wire outlet 30b and the wiring harness fixing part 42, thereby absorbing the excess length of the wiring harness 10 during the opening and closing of the sliding door 500. Figures 1 to 4 ).

[0056] When the door is fully closed, the door-side wiring section 10B is preferably fixed by the wiring harness fixing section 42 in a spiral shape that is the shortest possible turn. As a result, the power supply device 1 for the sliding door can minimize the slack generation area (in other words, the excess length absorption area) of the door-side wiring section 10B when the sliding door 500 is opened and closed.

[0057] As described above, in the sliding door power supply device 1 of this embodiment, the sliding door 500 is opened from the fully closed state, and the arm 30 is rotated about the rotation axis 41, thereby loosening the door-side wiring section 10B leading out from the wire outlet 30b. Therefore, a limiting wall 43 is provided in the sliding door power supply device 1 to prevent the door-side wiring section 10B from interfering with other surrounding components due to the path change caused by this loosening. Figures 1 to 4 The limiting wall 43 is provided on the door side protector 40 and covers the arc-shaped portion of the spiral door side wiring section 10B from the outside in the radial direction.

[0058] The wiring section 10B on the door side forms a vortex around the rotation axis 41. Therefore, the limiting wall 43 is formed as a continuous arc-shaped structure around the rotation axis 41. Here, as the limiting wall 43, a first limiting wall 43A and a second limiting wall 43B are provided. Figures 1 to 4 ).

[0059] The first limiting wall 43A is a semi-circular arc-shaped wall portion formed with the rotation axis 41 as its axis. When the sliding door 500 is fully closed, one end of its circumferential direction is positioned opposite the wire inlet 30a of the arm 30 at a distance. Figure 1 and Figure 3The second limiting wall 43B is continuously provided in an arc shape from the other end of the first limiting wall 43A in the circumferential direction (i.e., the end located in the direction opposite to the spiral direction of the door-side wire wiring portion 10B) toward the wire harness fixing portion 42. Figures 1 to 4 The second limiting wall 43B is formed as an arc-shaped wall portion, and the distance from each point on the circumference of the arc-shaped wall portion to the rotation axis 41 is larger than the radius of the first limiting wall 43A. In the power supply device 1 for the sliding door, the space between the second limiting wall 43B and the rotation axis 41 is used as the relaxation generation area (excess length absorption area) of the door-side wiring section 10B. Therefore, in the power supply device 1 for the sliding door, when the sliding door 500 is opened from the fully closed state, the door-side wiring section 10B relaxes in the space between the second limiting wall 43B and the rotation axis 41, thereby absorbing the excess length of the wiring harness 10.

[0060] Furthermore, in this power supply device 1 for the sliding door, the spiral shape of the door-side wiring section 10B is at its shortest when the sliding door 500 is fully closed, and the arm 30 does not rotate in the direction that pulls the door-side wiring section 10B with the shortest spiral shape. Therefore, in this power supply device 1 for the sliding door, the arm 30 is not subjected to useless force from the spiral-shaped door-side wiring section 10B, and thus the arm 30 can rotate smoothly around the rotation axis 41.

[0061] As shown above, the sliding door power supply device 1 of this embodiment has a simple structure in which only one arm 30 rotates around the rotation axis 41 in response to changes in the wiring path of the cross-mounted part 10A. Therefore, this sliding door power supply device 1 helps to reduce size, weight, and cost. Furthermore, when the sliding door 500 is fully closed, the door-side wiring part 10B between the wire outlet 30b and the wire harness fixing part 42 is in a spiral shape around the rotation axis 41. Therefore, when the sliding door 500 is opened from the fully closed state to the fully open state, the door-side wiring part 10B relaxes and absorbs excess length. Therefore, this sliding door power supply device 1 can absorb excess length of the wire harness 10 when the sliding door 500 is opened and closed with such a simple structure, thus also contributing to miniaturization, weight reduction, and cost reduction.

[0062] Furthermore, in the power supply device 1 for the sliding door in this embodiment, the door-side wiring section 10B is made into the shortest spiral shape between the wire outlet 30b and the wire harness fixing section 42 when the door is fully closed, and the arm 30 does not rotate in the direction that pulls the door-side wiring section 10B with the shortest spiral shape, so the arm 30 can rotate smoothly around the rotation axis 41.

Claims

1. A power supply device for a sliding door, characterized in that, have: The wiring harness has a spanning portion that spans between the vehicle body and the sliding door, a vehicle-side wiring portion that is laid at the end of the vehicle-side end of the spanning portion, and a door-side wiring portion that is laid at the end of the door-side end of the spanning portion. A vehicle body side protector is fixed to the vehicle body and holds the vehicle body side end of the cross-section, and causes the cross-section to swing in conjunction with the opening and closing action of the sliding door. A cylindrical arm, which supports the door-side end of the spanning section at one end, and allows the door-side wiring portion to pass through the cylinder and exit from the wire outlet at the other end to the outside of the cylinder; and A door-side protector is fixed to the inner panel of the sliding door and provides axial support to the other end of the arm in a manner rotatable about a rotation axis. The protector also guides the door-side wiring portion extending from the wire outlet. The door-side protector is equipped with a wire harness fixing part to secure the door-side wire wiring section leading out of the wire outlet. Viewed from the wire outlet when the sliding door is fully closed, the wire harness fixing part is located on the side opposite to the rotation axis. When the sliding door is fully closed, the wiring section on the door side forms a spiral shape around the rotation axis between the wire outlet and the wire harness fixing part. When the sliding door is opened from the fully closed state, the rotating shaft causes the wire outlet to rotate in the direction that pushes the door-side wire wiring portion, from which the wire outlet is drawn, toward the wire harness fixing portion.

2. The power supply device for sliding doors as described in claim 1, characterized in that, The excess length of the wire harness during the opening and closing of the sliding door is absorbed in the wire wiring section on the door side, between the wire outlet and the wire harness fixing section.

3. The power supply device for a sliding door as described in claim 1 or 2, characterized in that, When the sliding door is fully closed, the rotating shaft is positioned adjacent to the wire outlet facing upwards on the opening side of the sliding door, and when the sliding door is opened from the fully closed state, it causes the wire outlet to rotate in the opposite direction to the spiral direction of the wire wiring portion on the door side. The wire harness fixing part is located on the door closing side of the sliding door, which is closer to the wire outlet.

4. The power supply device for a sliding door as described in claim 1 or 2, characterized in that, A limiting wall is provided on the door-side protector, which radially covers the arc-shaped portion of the spiral-shaped door-side wiring section from the outside.

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