Surplus length accommodating unit for wiring member

Abstract

To improve the assemblability of a surplus length accommodating unit.SOLUTION: A surplus length accommodating unit 50 for a wiring member includes: a wiring member 40 including a movable side wiring region and a fixed side wiring region 46; and a surplus length accommodating device 52 including a surplus length accommodating case 60 that accommodates a surplus length portion. The surplus length accommodating case includes: a case body 62 having a bottom part and a peripheral wall and forming a surplus length accommodating space on the inner peripheral side of the peripheral wall; an inner lid 70 that closes an opening on the side opposite the bottom part of the case body; and an outer lid 80 that overlaps the inner lid on the side opposite the case body and forms a fixed side wiring region accommodating space 62S2 between the inner lid and the outer lid. An intermediate opening 70h through which the wiring member passes is formed in the inner lid; the surplus length portion is accommodated in the surplus length accommodating space in a state in which the wiring member is passed through the intermediate opening; and at least a portion of the fixed side wiring region is routed through the fixed side wiring region accommodating space.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a wiring member slack take-up unit. [Background technology]

[0002] Patent Document 1 discloses a wire harness installation device including a wire harness and a slack storage section having an entrance through which the slack of the wire harness is introduced and in which the slack is wound in a spiral shape and stored therein. A through hole is formed in the bottom wall of the slack absorbing section, and the wire harness is led out from the through hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-44960 Summary of the Invention [Problem to be solved by the invention]

[0004] In this regard, it is desirable to improve the ease of assembly of the slack absorption unit.

[0005] Therefore, an object of the present disclosure is to improve the assembly ease of an excess length absorption unit. [Means for solving the problem]

[0006] The wiring member slack absorption unit disclosed herein comprises a wiring member having a movable side wiring region and a fixed side wiring region, and an slack absorption device having a slack absorption case that accommodates an slack portion generated in the movable side wiring region, the slack absorption case having a case body having a bottom and a peripheral wall and forming an slack absorption space on the inner peripheral side of the peripheral wall, an inner lid that covers an opening of the case body on the opposite side to the bottom, and an outer lid that is stacked on the opposite side of the case body to the inner lid and forms a fixed side wiring region accommodating space between the inner lid and the outer lid, and an intermediate opening through which the wiring member passes is formed in the inner lid, and when the wiring member passes through the intermediate opening, the slack portion is accommodated in the slack absorption space and at least a portion of the fixed side wiring region is routed through the fixed side wiring region accommodating space. Effect of the Invention

[0007] According to the present disclosure, the assembly of the slack take-up unit can be improved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a slide sheet and an excess length absorbing unit according to an embodiment. [Diagram 2] FIG. 2 is a plan view showing the slack take-up unit when the slide sheet is positioned toward the rear. [Diagram 3] FIG. 3 is a plan view showing the slack absorbing unit when the slide sheet is positioned toward the front. [Figure 4] FIG. 4 is a perspective view showing the slack absorbing unit. [Diagram 5] FIG. 5 is an exploded perspective view showing the slack absorbing unit. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 7 is an exploded perspective view showing the case body, the rotating member, and the rotation biasing member. [Figure 8] FIG. 8 is an exploded perspective view showing the case body, the rotating member, and the rotation biasing member. [Figure 9] FIG. 9 is an explanatory diagram showing the assembly process of the slack take-up unit. [Figure 10] FIG. 10 is an explanatory diagram showing the operation of the slack absorbing unit. [Figure 11] FIG. 11 is an explanatory diagram showing the operation of the slack absorbing unit. [Figure 12] FIG. 12 is an explanatory view showing an excess length absorbing unit according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described.

[0010] The slack take-up unit of the wiring member of the present disclosure is as follows.

[0011] (1) A wiring member slack absorption unit comprising: a wiring member having a movable side wiring area and a fixed side wiring area; and a slack absorption device having a slack absorption case for accommodating an slack portion generated in the movable side wiring area, wherein the slack absorption case has a case body having a bottom and a peripheral wall and forming an slack absorption space on the inner peripheral side of the peripheral wall, an inner lid for covering an opening of the case body on the opposite side to the bottom, and an outer lid placed on the opposite side of the case body relative to the inner lid and forming a fixed side wiring area accommodating space between the inner lid and the outer lid, wherein an intermediate opening through which the wiring member passes is formed in the inner lid, and when the wiring member passes through the intermediate opening, the slack portion is accommodated in the slack absorption space and at least a portion of the fixed side wiring area is routed through the fixed side wiring area accommodating space.

[0012] According to this wiring member slack absorption unit, since an intermediate opening is formed in the inner lid, the operation of passing the wiring member through the intermediate opening and the operation of closing the opening of the case body with the inner lid can be performed on the opening side of the case body while the slack portion of the movable side wiring region is housed in the case body. In addition, the operation of routing at least a part of the fixed side wiring region through the fixed side wiring region housing space and the operation of overlapping the outer lid on the inner lid can also be performed on the opening side of the case body. Therefore, the assembly of the slack absorption unit is improved compared to when the wiring member is drawn out to the back side of the case body.

[0013] (2) A slack absorption unit for the wiring member of (1), wherein the wiring member has an internal support target portion located between the movable side wiring area and the fixed side wiring area, and the internal support target portion may be supported within the slack absorption case so that the slack portion is accommodated within the slack absorption space and at least a portion of the fixed side wiring area is routed through the fixed side wiring area accommodation space.

[0014] In this case, since the internal support portion is supported within the slack absorbing case, the movable wiring area can stably absorb the slack within the slack absorbing space.

[0015] (3) In a wiring member slack absorption unit of (1) or (2), the fixed side wiring area may pass through the fixed side wiring area accommodating space and be led out to the outside through a gap between the peripheral portion of the inner lid and the peripheral portion of the outer lid.

[0016] This makes it possible to easily lead the fixed side wiring region to the outside by passing between the peripheral edge of the inner lid and the peripheral edge of the outer lid.

[0017] (4) In the wiring member slack absorption unit of (3), the inner lid may have an inner lid main body and an inner lid wall portion, a space for accommodating the fixed side wiring area may be formed on the inner periphery of the inner lid wall portion, and an extraction opening for extracting the fixed side wiring area to the outside may be formed in the inner lid wall portion.

[0018] This makes it possible, with the inner lid attached to the case body, to easily arrange the fixed side wiring area within the inner lid wall portion and pull it out to the outside through the pull-out opening.

[0019] (5) In a wiring member slack absorption unit of (3) or (4), the inner cover or the outer cover may have a drawer fixing portion for fixing a drawer fixing target portion located away from the portion of the fixed side wiring area that passes through the intermediate opening.

[0020] The pull-out direction of the fixed-side wiring region from the slack take-up case may differ depending on the path of the fixed-side wiring region or the position of the electrical component to which the fixed-side wiring region is connected, etc. If the inner lid or outer lid has a pull-out fixing portion, it is possible to easily accommodate differences in the pull-out direction by modifying the design of the inner lid or outer lid in accordance with the differences in the pull-out direction.

[0021] (6) In the wiring member slack take-up unit of (5), the inner cover may have the drawer fixing portion.

[0022] In this case, the drawer fixing target portion can be fixed to the drawer fixing portion of the inner lid before the inner lid is covered with the outer lid, making it easy to accommodate at least a portion of the fixed side wiring area between the inner lid and the outer lid.

[0023] (7) A slack absorption unit for any one of the wiring members (1) to (6), wherein the fixed side wiring region has a pull-out fixing target portion at a position away from a portion of the wiring member that passes through the intermediate opening, and the pull-out fixing target portion is fixed to the slack absorption case within the fixed side wiring region accommodating space with at least a portion of the fixed side wiring region being allowed to slacken.

[0024] In this case, even if deformation such as twisting occurs in the fixed wiring region due to the excess length absorbing operation of the movable wiring region, the deformation is mitigated by the loose parts of the fixed wiring region, and local deformation is suppressed.

[0025] (8) A slack absorption unit for any one of the wiring members (1) to (7), wherein the slack absorption space may be set to a size that allows the size of the spiral formed by the slack portion to change by pushing the movable wiring region into the slack absorption case.

[0026] In this case, the excess length can be absorbed by allowing the size of the spiral formed by the excess length portion to change.

[0027] (9) A slack absorption unit for a wiring member of any one of (1) to (8), wherein the wiring member has an internal support target portion located between the movable side wiring area and the fixed side wiring area, and the slack absorption device may have a winding core portion supporting the internal support target portion, a rotating member that rotatably supports the winding core portion, and a rotational biasing member that biases the rotating member in a direction to wind up the slack portion.

[0028] In this case, the urging force of the rotation urging member rotates the rotating member, and the surplus length is wound around the core, thereby making it possible to absorb the surplus length.

[0029] [Details of the embodiment of the present disclosure] Specific examples of the wiring member slack take-up unit of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0030] [Embodiment] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wiring member slack absorbing unit according to an embodiment will be described. In this embodiment, an example in which the slack absorbing unit absorbs slack in a wiring member between a vehicle body and a sliding seat will be described.

[0031] <Prerequisite configuration> An example of a support structure for the sliding sheet 20 and an example of a guide structure for the wiring member 40 will be described. Fig. 1 is a perspective view showing the sliding sheet 20 mounted on the vehicle body 10 and the slack absorbing unit 50. Fig. 2 is a plan view showing the slack absorbing unit 50 when the sliding sheet 20 is positioned toward the rear. Fig. 3 is a plan view showing the slack absorbing unit 50 when the sliding sheet 20 is positioned toward the front. Note that in Figs. 2 and 3, the inner lid 70 and the outer lid 80 in the slack absorbing unit 50 are omitted, and the slack absorbing operation of the movable wiring region 44 of the wiring member 40 is mainly shown.

[0032] The slack absorption unit 50 according to this embodiment absorbs slack generated in a wiring member 40 that is wired between a first component and a second component that moves relative to the first component in a vehicle (not shown) such as an automobile. In other words, when the wiring member 40 is wired between the first component and the second component, the length of the wiring member 40 is set to a size assuming a state in which the wiring fixing point in the first component and the wiring fixing point in the second component are the farthest apart. For this reason, when the two wiring fixing points are close to each other, slack, i.e., slack, may occur in the wiring member 40. The slack absorption unit 50 absorbs the slack.

[0033] Here, an example will be described in which the combination of the first part and the second part is the vehicle body 10 and the sliding seat 20. The combination of the first part and the second part may be something other than the vehicle body 10 and the sliding seat 20, for example, the combination may be a vehicle body and a sliding door.

[0034] The slide seat 20 is supported movably on the vehicle body 10 as follows. That is, seat rails 12, 13 are supported on the floor of the vehicle body 10. Each of the seat rails 12, 13 is a long and narrow rail extending in the front-rear direction. The seat rails 12, 13 are arranged in parallel and spaced apart in the left-right direction.

[0035] The sliding seat 20 is supported slidably on the floor of the vehicle body 10 via the seat rails 12, 13. For example, the lower part of the sliding seat 20 is fixed to a seat slider that moves along the seat rails 12, 13. The seat slider moves back and forth while being guided by the seat rails 12, 13, thereby enabling the sliding seat 20 to move back and forth in the front-rear direction.

[0036] The sliding seat 20 is provided with electrical equipment. Such electrical equipment is not particularly limited, and may be, for example, an electric reclining device, a seat heater, a sensor for detecting whether an occupant is seated, a sensor for detecting whether a seat belt is fastened, etc. The electrical equipment of the seat may be one type, or two or more types.

[0037] In this embodiment, for convenience of explanation, up and down, front and rear, and left and right may be mentioned. In this case, the side where the slide seat 20 is located with respect to the seat rails 12 and 13 is the top, and the side where the seat rails 12 and 13 are located with respect to the slide seat 20 is the bottom. The extending direction of the seat rails 12 and 13 is the front-rear direction, and in this embodiment, the side where the slack absorption unit 50 is located with respect to the seat rails 12 and 13 is the front, and the opposite side is the rear. In addition, left and right are defined based on the above up and down and front and rear. In addition, the slack absorption unit 50 can be installed in various positions regardless of the up and down, front and rear, and left and right positional relationships described in this embodiment.

[0038] The wiring member 40 connects the electrical components of the slide seat 20 to electrical devices of the vehicle body 10. The electrical devices of the vehicle body are not particularly limited, and may be, for example, a battery or an electronic control unit (ECU).

[0039] The wiring member 40 is a bendable wiring member that includes at least one conductive wire. The wiring member 40 may be routed to bend primarily in one plane.

[0040] For example, the wiring member 40 may include at least one coated electric wire and a connecting guide member to which a plurality of links are connected so as to be aligned in a row. Each of the plurality of links may be a frame-shaped member through which at least one coated electric wire can be inserted, and adjacent links may be connected to each other so as to be rotatable mainly around one axis. Adjacent links may be rotatably connected to each other by a thin hinge, or may be rotatably connected to each other by a fitting structure between a shaft portion and a bearing. If the rotation axes between adjacent links are aligned in the same direction, the connecting guide member is regulated in path so as to bend mainly on one plane perpendicular to the rotation axis. At least one coated electric wire is inserted into the connecting guide member and guided, so that the path of at least one coated electric wire is regulated so as to bend mainly on one plane. Such a connecting guide member may be a part called a cable chain, a cable carrier, or a cableveyor (trademark).

[0041] If each link member is formed in a flat frame shape, for example, a flat rectangular frame shape, the multiple coated electric wires can be bundled in a flat shape that can be easily bent in the thickness direction of the flat shape.

[0042] The wiring member 40, the path of which is restricted so as to bend mainly on one plane, may not have the above configuration. For example, the wiring member 40 may be a belt-shaped wiring material, for example, a belt-shaped wiring material obtained by welding coated electric wires in parallel to a belt-shaped resin sheet such as a nonwoven sheet, an FFC (Flexible Flat Cable) or an FPC (Flexible Printed Circuits).

[0043] The wiring member 40 does not have to be route-regulated so as to bend mainly on one plane. The wiring member 40 may be configured in such a manner that a plurality of coated electric wires are held in a bundled state by a corrugated tube. The wiring member 40 may be configured in such a manner that a plurality of coated electric wires are bundled in a circular cross-section by an adhesive tape, a cable tie, or the like.

[0044] In this embodiment, the wiring member 40 has a flat band shape and can bend mainly in its thickness direction. In other words, the wiring member 40 is regulated in its path so as to bend mainly on a plane perpendicular to the width direction of the flat band.

[0045] The wiring member 40 may be guided by a wiring guide unit 30 arranged parallel to the seat rails 12, 13 so as to be guided in the front-rear direction in conjunction with the front-rear movement of the sliding seat 20.

[0046] In this embodiment, the wiring guide unit 30 includes a guide portion 32 and a slider 38 .

[0047] An elongated guide space 32P extending in the front-rear direction is formed in the guide portion 32. The cross-sectional shape of the guide space 32P (the shape of a cross section perpendicular to the longitudinal direction) is larger than the cross-sectional shape of the wiring member 40. By being inserted into the guide space 32P, the wiring member 40 can move forward and backward in a constant posture in conjunction with the forward and backward movement of the slide sheet 20.

[0048] For example, the wiring member 40 is inserted into the guide space 32P with its width direction aligned along the up-down direction. This allows the wiring member 40 to move in the front-rear direction within the guide space 32P with its width direction aligned along the up-down direction.

[0049] The slider 38 is supported by the guide portion 32. The slider 38 is capable of reciprocating between a first position P1 and a second position P2. The first position P1 is the position of the slider 38 when the sliding seat 20 is located near the rear ends of the seat rails 12, 13. The second position P2 is the position of the slider 38 when the sliding seat 20 is located near the front ends of the seat rails 12, 13.

[0050] The lower end of the slider 38 is movably supported by the guide portion 32 , and the upper end of the slider 38 protrudes above the guide portion 32 .

[0051] One end of the wiring member 40 is connected to the slider 38 within the guide space 32P. The middle portion of the wiring member 40 passes through the guide space 32P and is introduced from an entrance of the guide part 32. In this embodiment, the entrance is located at the front end of the guide part 32.

[0052] An extension wiring member, for example, a coated electric wire, extending from one end of the wiring member 40 is led from the lower end of the slider 38 through the slider 38 to the upper end of the slider 38, extends from the upper end of the slider 38 and is connected to the electrical equipment of the slide seat 20.

[0053] As the slider 38 moves back and forth, one end of the wiring member 40 moves back and forth within the guide space 32P. As one end of the wiring member 40 moves back and forth within the guide space 32P, a portion of the wiring member 40 close to the slider 38 moves back and forth within the guide space 32P along the guide space 32P. When the slider 38 is located at the second position P2 close to the entrance, the length of the wiring member 40 that can be accommodated within the guide space 32P is smaller than the length of the wiring member 40 that can be accommodated within the guide space 32P when the slider 38 is located at the first position P1 far from the entrance. Therefore, when the slider 38 moves from the first position P1 to the second position P2, the wiring member 40 of a difference length obtained by subtracting the former length from the latter length is pushed out from the entrance of the guide part 32. Conversely, when the slider 38 moves from the second position P2 to the first position P1, the wiring member 40 of the difference length is pulled into the guide part 32 from outside the entrance of the guide part 32.

[0054] The slack absorbing unit 50 is disposed at a position facing the entrance of the guide portion 32. The portion of the wiring member 40 pushed out from the entrance of the guide portion 32 can be pushed into the slack absorbing device 52 of the slack absorbing unit 50. The portion of the wiring member 40 that was pushed into the slack absorbing device 52 can be drawn into the guide portion 32.

[0055] <About the wiring component excess length absorption unit> <Overall configuration of the excess length absorption unit> The slack absorbing unit 50 of the wiring member 40 will be described in more detail. Fig. 4 is a perspective view showing the slack absorbing unit 50. Fig. 5 is an exploded perspective view showing the slack absorbing unit 50. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 4.

[0056] The slack taking up unit 50 for the wiring member 40 includes the wiring member 40 and a slack taking up device 52 .

[0057] As described above, the wiring member 40 is a wiring that comes out of the guide portion 32 and is accommodated in the slack take-up device 52. The wiring member 40 includes a movable-side wiring region 44 and a fixed-side wiring region 46.

[0058] The wiring member 40 may have an internal support target portion 42 located between the movable wiring region 44 and the fixed wiring region 46. The internal support target portion 42 is a portion that is supported at a fixed position within the slack take-up device 52.

[0059] The movable-side wiring region 44 is a portion of the wiring member 40 that extends to one side from the internal support target portion 42. In this embodiment, the movable-side wiring region 44 is a portion that faces the slider 38 from the internal support target portion 42 and is a portion that can extend from the guide portion 32. As described above, the movable-side wiring region 44 is a portion whose path is regulated so as to bend mainly on one plane.

[0060] The fixed-side wiring region 46 is a portion extending from the internal support target portion 42 to the other side opposite to the movable-side wiring region 44. In this embodiment, the fixed-side wiring region 46 is thinner than the movable-side wiring region 44. The fixed-side wiring region 46 may be a portion that bends more freely than the movable-side wiring region 44. For example, the movable-side wiring region 44 is a portion in which the path of the electric wire is restricted by a connecting guide member so that the electric wire bends mainly on one plane, and the fixed-side wiring region 46 is a portion constituted by a covered electric wire extending from the connecting guide member.

[0061] The slack taking up device 52 includes a slack taking up case 60. The slack taking up device 52 may include a rotating member 90 and a rotation biasing member 98.

[0062] The portion of the wiring member 40 that protrudes from the entrance of the guide portion 32 is accommodated as an excess portion 44R in the excess length absorbing case 60. The excess portion 44R generated in the movable wiring region 44 is accommodated in the excess length absorbing case 60.

[0063] A part of the extension direction of the slack portion 44R is supported by a winding core portion 92 located away from the entrance of the guide portion 32 inside the slack absorption case 60. The portion of the wiring member 40 supported by the winding core portion 92 is the internal support target portion 42. The internal support target portion 42 may be, for example, an end portion of a connecting guide member that regulates the bending state of the movable-side wiring region 44, the end portion being opposite to the connecting end to the slider 38.

[0064] The internal support target portion 42 of the wiring member 40 may be supported so as to be unrotatable within the slack absorbing case 60. It is not essential that a part of the wiring member 40 in the extending direction is supported at a fixed position within the slack absorbing case 60.

[0065] The slack absorbing case 60 is a case that accommodates the slack portion 44R of the wiring member 40 that protrudes from the entrance of the guide portion 32. Inside the slack absorbing case 60, an slack absorbing space 62S1 is formed that can accommodate the slack portion 44R in a spirally wound state.

[0066] The rotating member 90 has a winding core portion 92 that supports the internal support target portion 42. The rotating member 90 is rotatably supported by the slack absorbing case 60, whereby the winding core portion 92 is rotatably supported within the slack absorbing case 60.

[0067] The excess length portion 44R forms a spiral around the winding core portion 92. The number of turns of the excess length portion 44R that forms a spiral around the winding core portion 92 changes as the winding core portion 92 rotates. In addition, the size of the excess length portion 44R that forms a spiral around the winding core portion 92 can change as the winding core portion 92 rotates.

[0068] The rotation biasing member 98 biases the rotating member 90 in a direction to wind up the excess length portion 44R. The direction to wind up the excess length portion 44R is a direction to increase the number of turns of the spiral of the excess length portion 44R.

[0069] The number of spiral turns of the slack portion 44R increases as the rotating member 90 rotates due to the biasing force of the rotation biasing member 98. This allows the slack absorbing length within the slack absorbing case 60 to be increased.

[0070] Furthermore, the slack absorbing space 62S1 of the slack absorbing case 60 is set to a size that allows the size of the spiral formed by the slack portion 44R to change around the winding core 92 by pushing the movable-side wiring region 44 into the slack absorbing case 60. For example, assuming that the slack portion 44R is tightly wound in a spiral shape around the winding core 92 when the longest slack is generated, there is a gap on the outer periphery of the spiral slack portion 44R through which the slack portion 44R can grow. For this reason, the slack portion 44R can also absorb the slack by increasing the size of the spiral, thereby increasing the length of each turn.

[0071] In other words, it is assumed that the slider 38 is closest to the slack absorbing device 52 (see position P2 in FIG. 3) and the longest slack is generated. In this state, the state in which the slack portion 44R of the movable-side wiring region 44 is accommodated in the slack absorbing case 60 is defined as the longest accommodated state (see FIG. 3).

[0072] It is assumed that the slider 38 is farthest from the slack absorbing device 52 (see position P1 in FIG. 2) and the shortest slack is generated. In this state, the shortest accommodated state is when the slack portion 44R of the movable-side wiring region 44 is accommodated in the slack absorbing case 60 (see FIG. 2).

[0073] Both the size and number of turns of the spiral formed by the slack portion 44R are larger in the longest storage state than in the shortest storage state. Thus, when the longest slack occurs, the slack is absorbed by both the larger size of the spiral formed by the slack portion 44R and the larger number of turns of the spiral.

[0074] It is not essential that the excess length be absorbed by both increasing the size of the spiral formed by the excess length portion 44R and increasing the number of turns of the spiral.

[0075] For example, the winding core 92 may be supported in the slack absorbing case 60 in a non-rotatable state. In this case, when the wiring member 40 is pulled out, the size of the spiral of the slack portion 44R around the winding core 92 decreases. Also, when the wiring member 40 is fed into the slack absorbing case 60, the size of the spiral of the slack portion 44R around the winding core 92 increases. Thus, the slack can be absorbed even if the number of turns of the slack portion 44R around the winding core 92 does not change.

[0076] Also, for example, the winding core 92 may be biased in the winding direction to an extent that the wiring member 40 can rotate a number of times that can absorb the slack generated in the wiring member 40. In this case, when the wiring member 40 is pulled, the winding core 92 rotates according to the amount of pulling. This reduces the number of turns of the wiring member 40 around the winding core 92, allowing the wiring member 40 to be unwound. When the wiring member 40 is fed into the slack absorption case 60, the winding core 92 rotates according to the biasing force in the winding direction that corresponds to the amount of feeding. This increases the number of turns of the wiring member 40 around the winding core 92, allowing the wiring member 40 to be absorbed.

[0077] In this embodiment, the fixed wiring region 46 is led out through the winding core portion 92 to the outside of the slack absorbing space 62S1.

[0078] The slack absorbing case 60 has a fixed-side wiring region accommodating space 62S2 that accommodates at least a portion of the fixed-side wiring region 46. The fixed-side wiring region accommodating space 62S2 is a space separated from the slack absorbing space 62S1. Therefore, at least a portion of the fixed-side wiring region 46 can deform in response to the rotation of the rotating member 90 without interfering with the slack portion 44R in the slack absorbing space 62S1. Also, the movable-side wiring region 44 can perform an operation for absorbing slack within the slack absorbing space 62S1 without interfering with the fixed-side wiring region 46.

[0079] The fixed-side wiring region 46 may have a drawn-out fixed target portion 47 at a position away from the internal support target portion 42 on the other side. The drawn-out fixed target portion 47 may be fixed to the inner lid 78. This fixation may cause the fixed-side excess length portion 46a between the internal support target portion 42 and the drawn-out fixed target portion 47 in the fixed-side wiring region 46 to be in a slack state within the fixed-side wiring region accommodating space 62S2. This allows the fixed-side excess length portion 46a to deform due to the rotation of the rotating member 90 within the fixed-side wiring region accommodating space 62S2.

[0080] It is preferable that the fixed-side excess length portion 46a is spirally formed in the fixed-side wiring region accommodating space 62S2, so that the deformation of the fixed-side wiring region 46 caused by the rotation of the rotating member 90 is stabilized.

[0081] The configuration of each part will now be described in more detail.

[0082] <About the excess length absorption case> 2 to 6, the slack absorbing case 60 includes a case body 62, an inner lid 70, and an outer lid 80. Each of the case body 62, the inner lid 70, and the outer lid 80 may be, for example, a resin molded product.

[0083] The case body 62 has a bottom 64 and a peripheral wall 68 .

[0084] The bottom 64 is plate-shaped, in this case a circular plate-shaped portion with a right-angled triangular plate-shaped portion connected to a portion of the circumference. In other words, the bottom 64 is a circular plate-shaped portion with a rectangular plate-shaped portion connected to a recess in the circular plate-shaped portion for 3 / 4 of the circumference.

[0085] A rotating member 90 is rotatably supported by the bottom portion 64. Here, the rotating member 90 is rotatably supported by the bottom portion 64 with the center of a circular portion of the bottom portion 64 and the center of the winding core portion 92 aligned.

[0086] The peripheral wall 68 protrudes from the outer periphery of the bottom portion 64 toward one main surface of the bottom portion 64 .

[0087] An entrance 68G for the movable wiring region 44 of the wiring member 40 is formed in the peripheral wall 68. The movable wiring region 44 is pushed into or pulled out of the slack absorbing case 60 through the entrance 68G.

[0088] An excess length absorbing space 62S1 is formed on the inner peripheral side of the peripheral wall 68. The portion of the movable wiring area 44 that is accommodated in the excess length absorbing case 60 through the entrance 68G can form a spiral around the winding core 92. The portion of the movable wiring area 44 that is accommodated in the excess length absorbing case 60 and forms a spiral around the winding core 92 is the excess length portion 44R. The length of the excess length portion 44R varies depending on the position of the slider 38. If the slider 38 is positioned at position P2 close to the excess length absorbing case 60, the excess length portion 44R is long. If the slider 38 is positioned at position P2 far from the excess length absorbing case 60, the excess length portion 44R is short.

[0089] In this embodiment, the peripheral wall 68 includes a first wall portion 68a, a second wall portion 68b, and an arc-shaped wall portion 68c.

[0090] The first wall portion 68a is formed in a rectangular plate shape extending along one linear edge extending from one corner of the outer periphery of the bottom portion 64.

[0091] The second wall portion 68b extends along the other linear edge extending from one corner of the outer periphery of the bottom portion 64. The inner periphery of the second wall portion 68b is formed into an arc-shaped surface 68bf. A gap through which the movable-side wiring region 44 can pass is formed between the first wall portion 68a and the second wall portion 68b, and the gap serves as an entrance / exit 68G.

[0092] The inner surface of the first wall portion 68a forms a part of the inner peripheral surface of the entrance 68G. The surface of the second wall portion 68b facing the other end of the first wall portion 68a faces the inner surface of the other end of the first wall portion 68a with a gap therebetween. A groove through which the movable-side wiring region 44 can pass is formed between the first wall portion 68a and the second wall portion 68b. The movable-side wiring region 44 pushed out from the guide portion 32 passes through the entrance 68G and is pushed into the slack absorption case 60 while maintaining the same posture as it had in the guide portion 32.

[0093] The arc-shaped wall portion 68c is formed in a plate shape extending along an arc-shaped edge of 3 / 4 of the circumference of the bottom portion 64. In other words, the arc-shaped wall portion 68c is formed in a shape in which a rectangular plate portion is bent into an arc of 3 / 4 of the circumference. Both ends of the arc-shaped wall portion 68c are connected to the first wall portion 68a and the second wall portion 68b on the opposite side to the entrance / exit 68G. The inner surface of the arc-shaped wall portion 68c is formed as an arc-shaped surface 68cf formed along an arc of 3 / 4 of the circumference.

[0094] The arcuate surface 68bf and the arcuate surface 68cf are connected to each other so as to draw about 7 / 8 of a circle. The centers of curvature of the arcuate surface 68bf and the arcuate surface 68cf coincide with the center of the winding core portion 92. The slack portion 44R can be deformed on the outer periphery side of the winding core portion 92, and within the slack absorbing space 62S1 on the inner periphery side between the arcuate surface 68bf and the arcuate surface 68cf.

[0095] The inner lid 70 is formed in a plate shape that closes the opening of the case body 62 on the opposite side to the bottom portion 64. The inner lid 70 is formed to have the same outer shape as the bottom portion 64.

[0096] An intermediate opening 70h through which the wiring member 40 passes is formed in the inner cover 70. The intermediate opening 70h is located on an extension of the tip side of the winding core portion 92. The fixed side wiring region 46 of the wiring member 40 is drawn out to the outside of the slack absorbing space 62S1 through the intermediate opening 70h.

[0097] An opening wall portion 70hp is erected on a part of the circumferential direction of the intermediate opening 70h. The opening wall portion 70hp contacts the inner surface of the outer lid 80, thereby suppressing inward bending deformation of the outer lid 80. The fixed-side excess length portion 46a passes through a portion of the periphery of the intermediate opening 70h that does not have the opening wall portion 70hp, and is led to the fixed-side wiring region accommodation space 62S2 side.

[0098] The outer lid 80 is placed on the inner lid 70 on the opposite side to the case body 62. Between the inner lid 70 and the outer lid 80, a fixed-side wiring region accommodating space 62S2 is formed to accommodate at least a part of the fixed-side wiring region 46, that is, the fixed-side excess length portion 46a.

[0099] The fixed-side wiring region 46 passes through the fixed-side wiring region accommodating space 62S2 and passes between the peripheral edge of the inner lid 70 and the peripheral edge of the outer lid 80 to be led out to the outside.

[0100] That is, with the wiring member 40 passing through the intermediate opening 70h, the excess length portion 44R is accommodated within the excess length absorbing space 62S1, and at least a portion of the fixed side wiring region 46 is routed through the fixed side wiring region accommodating space 62S2.

[0101] In this embodiment, the internal support target portion 42 is supported in the slack absorbing case 60 by the winding core portion 92, so that the slack portion 44R is accommodated in the slack absorbing space 62S1 and at least a part of the fixed-side wiring region 46 is stably maintained in a routed state passing through the fixed-side wiring region accommodating space 62S2. It is not essential that the internal support target portion 42 is supported in the slack absorbing case 60. The intermediate portion of the wiring member 40 in the extending direction may pass through the intermediate opening 70h without being fixed.

[0102] It is not essential that the fixed-side wiring region 46 is led out to the outside through between the peripheral portion of the inner lid 70 and the peripheral portion of the outer lid 80. For example, an intermediate opening for leading out the fixed-side wiring region may be formed in the outer lid, and the fixed-side wiring region may be led out to the outside through the intermediate opening.

[0103] It is not essential that the fixed-side wiring region 46 is drawn out of the slack absorbing case 60. For example, a relay connector may be connected to an end of the fixed-side wiring region, and the relay connector may be supported by the inner lid 70 or the outer lid 80. In this case, it is preferable that a connector of an external wiring is connected to the relay connector.

[0104] In this embodiment, the inner lid 70 includes an inner lid body 74 that closes the opening of the case body 62, and an inner lid wall portion 76 that protrudes from the outer periphery of the inner lid body 74. The fixed-side wiring region accommodating space 62S2 is formed on the inner periphery side of the inner lid wall portion 76.

[0105] An inner peripheral surface 76f of the inner cover wall portion 76 is formed as a surface extending along a circle centered on the center of the winding core portion 92.

[0106] The outer lid 80 is formed in a plate shape that expands in the same shape as the bottom 64, and closes the opening of the inner lid 70 on the side opposite to the case body 62. As a result, a fixed-side wiring region accommodating space 62S2 surrounded by the inner peripheral surface 76f of the inner lid wall portion 76 is formed between the inner lid body 74 and the outer lid 80.

[0107] In addition, a wall portion for forming a fixed side wiring region accommodating space may be formed on the outer lid side.

[0108] The inner cover 70 has a drawer fixing portion 78 that fixes the drawer fixing target portion 47 located away from the internal support target portion 42 on the other side of the fixed-side wiring region 46. The drawer fixing target portion 47 is also a portion located away from a portion of the fixed-side wiring region 46 that passes through the intermediate opening 70h.

[0109] In this embodiment, a drawer fixing portion 78 is formed so as to protrude outward from a portion of the outer periphery of the inner lid body 74 .

[0110] A draw-out opening 76h for drawing out the fixed-side wiring region 46 to the outside is formed in a portion of the inner cover wall portion 76 corresponding to the draw-out fixing portion 78. The fixed-side wiring region 46 can be drawn out from the fixed-side wiring region accommodating space 62S2 through the draw-out opening 76h to the outside and disposed on the draw-out fixing portion 78.

[0111] A positioning protrusion 74p may be formed on the inner periphery of the inner lid wall 76 adjacent to the opening of the inner lid main body 74. For example, a portion of the fixed-side excess length portion 46a close to the drawer fixing target portion 47 is disposed between the inner lid wall 76 and the positioning protrusion 74p. This allows the fixed-side excess length portion 46a to be disposed along the inner lid wall 76 in a portion extending from the drawer fixing target portion 47 toward the fixed-side wiring region accommodating space 62S2, making it easier for the fixed-side excess length portion 46a to describe a spiral.

[0112] For example, in a state in which the drawer fixing target part 47 is arranged along the drawer fixing part 78, a binding member 79 is bound to the drawer fixing part 78 and the drawer fixing target part 47, thereby fixing the drawer fixing target part 47 to the drawer fixing part 78. The binding member 79 may be, for example, a cable tie or a wound cable tie.

[0113] A protrusion 78a protruding outward may be formed at the tip of a side edge of the drawer fixing part 78, or an insertion hole 78b through which the binding member 79 is inserted may be formed. In this case, the binding member 79 comes into contact with the protrusion 78a or is inserted into the insertion hole 78b, making it difficult for the binding member 79 to come out of the drawer fixing part 78, and the drawer fixing target part 47 is kept in a state in which it is reliably fixed by the drawer fixing part 78.

[0114] With the draw-out fixing target portion 47 fixed to the draw-out fixing portion 78, at least a portion of the fixed-side wiring region 46 is in a loose state within the fixed-side wiring region accommodating space 62S2. In this embodiment, at least a portion of the fixed-side wiring region 46 is in a loose state while drawing a spiral as described above.

[0115] The outer cover may have a drawer fixing portion.

[0116] <Rotary member and rotation biasing member> The rotating member 90 and the rotation biasing member 98 will be described. Figures 7 and 8 are exploded perspective views showing the case main body 62, the rotating member 90, and the rotation biasing member 98. Figure 7 is a perspective view of the rotating member 90 seen obliquely from above, and Figure 8 is a perspective view of the rotating member 90 seen obliquely from below. In Figure 7, the rotating member 90 and the rotation biasing member 98 are disassembled, and in Figure 8, the rotation biasing member 98 is assembled to the rotating member 90.

[0117] As shown in FIGS. 5 to 8, the rotation member 90 is rotatably supported on the bottom portion 64 .

[0118] More specifically, the rotating member 90 includes a core portion 92 , a base portion 94 , and a shaft portion 96 .

[0119] The base 94 is formed in a circular plate shape.

[0120] The winding core portion 92 protrudes from one main surface side of the base portion 94. The winding core portion 92 is a plate-shaped portion that protrudes in a spiral that goes more than one revolution. The internal support target portion 42 of the wiring member 40 is disposed at the outlet portion of the winding core portion 92 that forms a spiral, and the internal support target portion 42 is fixed to the winding core portion 92. Preferably, a convex portion is formed on one of the outlet of the winding core portion 92 and the internal support target portion 42, and a concave portion into which the convex portion fits is formed on the other. In this case, the convex portion fits into the concave portion, and the internal support target portion 42 is more reliably supported at a fixed position relative to the winding core portion 92.

[0121] The spiral gap of the winding core portion 92 opens on the side opposite the base portion 94. The fixed-side wiring region 46 extending from the internal support target portion 42 can be drawn out to the side opposite the base portion 94 through the spiral gap of the winding core portion 92.

[0122] The shaft portion 96 protrudes from the other main surface side of the base portion 94. The shaft portion 96 is formed in a round rod shape. The shaft portion 96 is located at the center of the circular base portion 94.

[0123] A spring fixing projection 95 is provided on the other main surface of the base portion 94 at a position around the shaft portion 96 .

[0124] In addition, an annular recess 65 is formed in the center of the bottom portion 64. The annular recess 65 is recessed in an annular shape when viewed from the side of the excess length absorbing space 62S1. The opening of the annular recess 65 is formed as a circular opening into which the base portion 94 can be disposed.

[0125] An annular protrusion 65p is formed in the center of the bottom of the annular recess 65. The top surface of the annular recess 65 is lower than the inner surface of the bottom 64. When the base 94 is placed on the annular protrusion 65p, the base 94 closes the opening of the annular recess 65. In this state, the inner surfaces of the bottom 64 and the base 94 extend on the same plane. A spring fixing recess 65g is formed in the outer peripheral wall of the annular recess 65 (see FIG. 8).

[0126] A shaft hole 65ph is formed in the center of the annular protrusion 65p. With the rotating member 90 placed on the annular protrusion 65p, the shaft portion 96 is rotatably inserted into the shaft hole 65ph. As a result, the rotating member 90 is rotatably supported relative to the bottom portion 64.

[0127] With the inner lid 70 covering the opening of the case body 62, the upper end of the winding core portion 92 is located directly below the middle opening 70h. The fixed-side wiring region 46 extending from the internal support target portion 42 is guided above the winding core portion 92 through a gap in the spiral of the winding core portion 92, and then guided through the middle opening 70h of the inner lid 70 to the fixed-side wiring region accommodation space 62S2 side.

[0128] The rotation biasing member 98 biases the rotation member 90 to rotate relative to the bottom portion 64. The rotation biasing member 98 biases the rotation member 90 in a direction to tighten the spiral of the movable wiring region 44, that is, in a direction to make the spiral narrower.

[0129] In this embodiment, the rotation biasing member 98 is a torsion coil spring. More specifically, the rotation biasing member 98 includes a coil portion 98a, a first end 98b which is one end of the spiral of the coil portion 98a, and a second end 98c which is the other end of the spiral of the coil portion 98a. The first end 98b and the second end 98c protrude toward the outer periphery of the coil portion 98a. The first end 98b protrudes more than the second end 98c.

[0130] The coil portion 98a is disposed on the outer circumferential side of the annular protrusion 65p in a twisted state, with a first end 98b engaged with the spring fixing recess 65g on the outer circumferential wall of the annular recess 65, and a second end 98c engaged with the spring fixing protrusion 95 of the rotating member 90. As a result, the rotation biasing member 98 rotationally biases the rotating member 90 relative to the case body 62.

[0131] The rotation biasing member may be a leaf spring, rubber, or the like.

[0132] <Example of assembly work for wiring guide unit> An example of an assembly operation for the wiring guide unit 30 will be described.

[0133] The case body 62 to which the rotation member 90 and the rotation biasing member 98 are attached is prepared.

[0134] Separately, the wiring member 40 is prepared (see FIG. 5). Then, the movable wiring region 44 is arranged in the slack absorbing space 62S1 while spiraling around the winding core portion 92. At the same time, the internal support target portion 42 is fitted into and fixed to the winding core portion 92. The movable wiring region 44 is also pulled out to the outside from the entrance 68G. The fixed wiring region 46 is also pulled out onto the winding core portion 92.

[0135] 9, the inner lid 70 is attached to the case body 62 so as to close the opening of the case body 62. At this time, the movable wiring area 44 is drawn upward through the middle opening 70h of the inner lid 70. The movable wiring area 44 is arranged on the inner lid 70 so as to draw a spiral inside the inner lid wall portion 76. Then, the movable wiring area 44 is drawn to the outside through the draw-out opening 76h, and the draw-out fixing target portion 47 is fixed to the draw-out fixing portion 78.

[0136] Thereafter, the outer lid 80 is placed on the inner lid 70. Screw fastening pieces 62P, 80P for screw fastening are protrudingly provided on the case body 62 and the outer lid 80. By fastening and fixing the screw fastening pieces 62P, 80P in the overlapping state with a screw S (see FIG. 4), the case body 62, the inner lid 70, and the outer lid 80 are kept in an overlapping state.

[0137] In this way, the wiring guide unit 30 is assembled.

[0138] <Operation> The operation of the wiring guide unit 30 will now be described.

[0139] When the slider 38 is located at the second position P2 close to the slack absorbing device 52, the length of the slack portion 44R is at its maximum. In this state, as shown in FIG. 10, the outer diameter of the slack portion 44R is at its maximum, and the slack portion 44R spreads widely within the slack absorbing space 62S1. For example, the outer peripheral surface of the slack portion 44R spreads along the inner surfaces of the arcuate surfaces 68bf, 68cf. For example, the slack portion 44R wraps around the winding core 92 many times, for example, more than three times. Note that the inner cover 70 is omitted in FIG. 10 and FIG. 11.

[0140] Furthermore, when the slider 38 is positioned at the second position P2, the excess length portion 44R may expand widely to the point where it contacts the inner surfaces of the arcuate surfaces 68bf, 68cf, or may expand to a size just short of contacting the inner surfaces.

[0141] From this state, the slider 38 moves toward the first position P1. Then, the wiring member 40 housed in the slack take-up device 52 is pulled into the guide portion 32. Then, as shown in FIG. 11, the spiral surplus portion 44R is pulled outward, and the surplus portion 44R is deformed so as to reduce its outer diameter. Then, the length of each turn of the surplus portion 44R becomes smaller. At the same time, the spiral surplus portion 44R rotates due to the wiring member 40 being pulled outward, and the winding core portion 92 rotates against the biasing force of the rotation biasing member 98 in a direction that reduces the number of turns of the spiral. This also reduces the number of turns of the spiral of the surplus portion 44R.

[0142] Conversely, the slider 38 moves toward the second position P2. Then, the wiring member 40 in the guide portion 32 is sent into the slack absorbing device 52. Then, as shown in FIG. 10, the surplus portion 44R is deformed so as to increase its outer diameter, and the length of each turn of the surplus portion 44R increases. At the same time, the biasing force on the rotating member 90 caused by the drawing of the wiring member 40 is released, so that the rotating member 90 tries to rotate due to the biasing force of the rotation biasing member 98. As a result, the winding core portion 92 rotates in a direction that increases the number of turns of the spiral of the surplus portion 44R, and the number of turns of the spiral of the surplus portion 44R also increases. For example, the surplus portion 44R turns about two and a half times.

[0143] That is, according to this embodiment, the slack of the movable wiring region 44 is absorbed by changing the spiral diameter of the slack portion 44R and by changing the number of turns of the spiral.

[0144] Regardless of the length of the excess length portion 44R, the fixed-side excess length portion 46a is maintained at a constant length within the fixed-side wiring region accommodation space 62S2. When the excess length portion 44R changes, the rotating member 90 rotates, and the fixed-side excess length portion 46a changes within the fixed-side wiring region accommodation space 62S2 to follow the rotation.

[0145] In this embodiment, the fixed side excess length portion 46a describes a spiral. As the rotating member 90 rotates, the number of turns of the spiral of the fixed side excess length portion 46a changes. For example, when the excess length portion 44R is lengthened, the fixed side excess length portion 46a turns less than one turn (see FIG. 10), and when the excess length portion 44R is shortened, the fixed side excess length portion 46a turns more than one turn but less than one and a half turns.

[0146] The fixed side extra length portion 46a can also follow the rotation of the rotating member 90 by changing the size of the spiral or the number of turns.

[0147] <Effects, etc.> According to the wiring member slack absorption unit 50 configured as described above, since the middle opening 70h is formed in the inner lid 70, the operation of passing the wiring member through the middle opening 70h and the operation of closing the opening of the case body 62 with the inner lid 70 can be performed on the opening side of the case body 62 with the slack portion 44R of the movable side wiring region 44 housed in the case body 62. In addition, the operation of routing at least a part of the fixed side wiring region 46 through the fixed side wiring region housing space 62S2 and the operation of overlapping the outer lid 80 on the inner lid 70 can also be performed on the opening side of the case body 62. Therefore, the assembly work can be performed at a place where it is easy to see without turning over the case body. If the wiring member is drawn out from the back of the case body, it is conceivable that the case body would be turned over to draw out the wiring member or work would be performed on a place that cannot be seen on the back side. Therefore, according to the present slack take-up unit 50, assembly work can be performed mainly on the opening side of the case body 62, improving the ease of assembly of the slack take-up unit 50.

[0148] In addition, at least a portion of the fixed-side wiring region 46 is routed through the fixed-side wiring region accommodation space 62S2. Therefore, the portion of the fixed-side wiring region 46 that is led out from the excess length absorbing space 62S1 through the intermediate opening 70h can be protected between the inner lid 70 and the outer lid 80.

[0149] In addition, since the inner lid 70 and the outer lid 80 are located on the opening side of the case body 62, the rigidity of the slack absorbing device 52 is improved. Therefore, even if the slack absorbing device 52 is stepped on, the slack absorbing device 52 is less likely to bend and deform, and a space for deformation of the wiring member 40 is easily secured.

[0150] When the slack take-up unit 50 is installed in the vehicle, the inner lid 70 and the outer lid 80 may be located above, below, or to the side of the case body 62.

[0151] Furthermore, since the fixed side wiring area 46 is arranged within the fixed side wiring area accommodating space 62S2 which is separated from the excess length absorbing space 62S1, the behavior of the fixed side wiring area 46 can be stabilized and local torsional deformation, etc. of the fixed side wiring area 46 can be suppressed.

[0152] The wiring member 40 also has an internal support target portion 42. The internal support target portion 42 is supported in the slack absorbing case 60 so that the slack portion 44R is accommodated in the slack absorbing space 62S1 and at least a portion of the fixed-side wiring region 46 is routed through the fixed-side wiring region accommodating space 62S2. Therefore, the slack of the movable-side wiring region 44 can be stably absorbed in the slack absorbing space 62S1.

[0153] In addition, the fixed-side wiring area 46 passes through the fixed-side wiring area accommodating space 62S2 and is led out to the outside through a gap between the peripheral edge of the inner lid 70 and the peripheral edge of the outer lid 80. Therefore, the fixed-side wiring area 46 can be easily led out to the outside of the slack take-up device 52.

[0154] Furthermore, since the inner lid 70 has an inner lid wall portion 76, and a pull-out opening 76h is formed in the inner lid wall portion 76, when the inner lid 70 is attached to the case body 62, the fixed side wiring area 46 can be easily positioned within the inner lid wall portion 76 and pulled out to the outside through the pull-out opening 76h.

[0155] In addition, the inner lid 70 or the outer lid 80 has a draw-out fixing portion 78 that fixes the draw-out fixing target portion 47 located away from the portion of the fixed-side wiring area 46 that passes through the intermediate opening 70h. Here, the draw-out direction of the fixed-side wiring area 46 from the excess length absorption case 60 may differ depending on the path of the fixed-side wiring area 46 or the position of the electrical component to which the fixed-side wiring area is connected. If the inner lid 70 or the outer lid 80 has the draw-out fixing portion 78, it is possible to easily accommodate differences in the draw-out direction by changing the design of the inner lid 70 or the outer lid 80 according to the difference in the draw-out direction. This allows the fixed-side wiring area 46 to have slack within the fixed-side wiring area accommodation space 62S2 to ensure durability, while making it easy to freely set the path according to the requirements and specifications of the vehicle installation.

[0156] For example, like an inner lid 170 according to a modified example shown in FIG. 12, a drawer fixing portion 178 may be provided so as to protrude from the opposite side of the first wall portion 68a.

[0157] In such a case, it is sufficient to change the shape of only the inner lid or the outer lid while using the same configurations for the case body 62, the rotation member 90, and the rotation biasing member 98. Therefore, various pull-out directions can be accommodated with only minor design changes.

[0158] In particular, if the inner lid 70 has a drawer fixing portion 78, by fixing the drawer fixing target portion 47 to the drawer fixing portion 78 of the inner lid 70 before covering the inner lid 70 with the outer lid 80, it becomes easy to accommodate at least a portion of the fixed side wiring area 46 between the inner lid 70 and the outer lid 80.

[0159] In addition, in the fixed-side wiring region accommodation space 62S2, the drawn-out fixed target portion 47 is fixed to the slack absorbing case 60 with at least a portion of the fixed-side wiring region 46 being loose. Therefore, even if the fixed-side wiring region 46 is deformed, such as twisted, by the slack absorbing operation of the movable-side wiring region 44, the deformation is alleviated by the slack portion of the fixed-side wiring region 46, and local deformation is suppressed. In this embodiment, the slack absorbing operation of the fixed-side wiring region 46 rotates the winding core portion 92, and the slack portion of the fixed-side wiring region 46 moves overall, changing the number of turns and the size of the spiral. Therefore, partial deformation of the fixed-side wiring region 46 is suppressed.

[0160] The slack absorbing space 62S1 is set to a size that allows a change in the size of the spiral formed by the slack portion 44R due to the movable wiring region 44 being pressed into the slack absorbing case 60. Therefore, by allowing a change in the size of the spiral formed by the slack portion 44R, the slack can be absorbed.

[0161] The slack absorbing device 52 has a winding core 92 that supports the internal support target portion 42, a rotating member 90 that rotatably supports the winding core 92, and a rotation biasing member 98 that biases the rotating member 90 in a direction to take up the slack portion 44R. Therefore, the rotating member 90 is rotated by the biasing force of the rotation biasing member 98, and the slack portion 44R is wound around the winding core 92. This makes it possible to absorb the slack.

[0162] In addition, since the rotation biasing member 98 rotationally biases the rotation member 90 relative to the bottom portion 64, the rotation member 90 and the rotation biasing member 98 can be assembled in advance into the case body 62. Therefore, the assembly work of the wiring member 40, the inner lid 70 and the outer lid 80 can be easily performed.

[0163] In addition, since the slack can be absorbed by both the change in the size of the spiral formed by the slack portion 44R and the change in the number of turns of the spiral caused by the rotation of the winding core portion 92, it is possible to increase the slack absorption length of the wiring member 40. As a result of being able to increase the slack absorption length of the wiring member 40, it also contributes to the miniaturization of the slack absorption case 60.

[0164] In addition, assuming that the same amount of excess length is to be absorbed, the number of rotations of the winding core 92 can be reduced compared to the case where the excess length is absorbed only by changing the number of turns of the spiral. This makes it possible to reduce the amount of deformation, such as twisting, of the fixed-side wiring region 46 drawn out from the winding core 92, and therefore the amount of deformation of the wiring member 40.

[0165] The configurations described in the above embodiment and modifications can be combined as appropriate as long as they are not mutually inconsistent. [Explanation of symbols]

[0166] 10. Body 12, 13 Seat rail 20 Slide Sheet 30 Wiring guide unit 32 Guide section 32P Guide Space 38 Slider 40 Wiring materials 42 Internal support target part 44 Movable side wiring area 44R extra length 46 Fixed side wiring area 46a Fixed side extra length 47 Drawer fixing target part 50 Excess length absorption unit 52 Excess length absorption device 60 Excess length absorption case 62 Case body 62P Screw stopper 62S1 Extra length absorption space 62S2 Fixed side wiring area accommodation space 64 Bottom 65 Annular recess 65g Spring fixing recess 65p Circular protrusion 65ph spindle hole 68 Peripheral wall 68G entrance / exit 68a First wall 68b 2nd wall section 68bf arcuate surface 68c arc wall section 68cf arcuate surface 70 Inner lid 70h intermediate opening 70hp opening wall 74 Inner lid body 74p Positioning protrusion 76 Inner lid wall 76f Inner surface 76h drawer opening 78 Drawer fixing part 78a Protrusion 78b Insertion hole 79 Binding material 80 Outer lid 80P Screw stopper 90 Rotating parts 92 Winding core 94 Base 95 Spring fixing protrusion 96 Shaft section 98 Rotational biasing member 98a Coil section 98b 1st end 98c 2nd end 170 Inner lid 178 Drawer fixing part P1 1st position P2 2nd position S Screw

Claims

1. a wiring member having a movable side wiring region and a fixed side wiring region; a slack absorbing device having a slack absorbing case for accommodating a slack portion generated in the movable wiring area; Equipped with The surplus length absorbing case is a case body having a bottom and a peripheral wall, the case body defining an excess length absorbing space on the inner peripheral side of the peripheral wall; an inner lid that closes an opening of the case body on the opposite side to the bottom; an outer lid that is placed on the inner lid on the opposite side of the case body and that forms a fixed-side wiring region accommodating space between the inner lid and an outer lid; having The inner lid is formed with an intermediate opening through which the wiring member passes, A wiring member slack absorption unit, in which, when the wiring member passes through the intermediate opening, the slack portion is accommodated within the slack absorption space and at least a portion of the fixed side wiring region is routed through the fixed side wiring region accommodating space.

2. 2. The wiring member slack take-up unit according to claim 1, the wiring member has an internal support target portion located between the movable wiring region and the fixed wiring region, A wiring member slack absorption unit in which the internal support target portion is supported within the slack absorption case so that the slack portion is accommodated within the slack absorption space and at least a portion of the fixed side wiring region is routed through the fixed side wiring region accommodating space.

3. 3. The wiring member slack take-up unit according to claim 1, The fixed side wiring area passes through the fixed side wiring area accommodating space and is led out to the outside through a gap between the peripheral portion of the inner lid and the peripheral portion of the outer lid.

4. 4. The wiring member slack take-up unit according to claim 3, The inner lid has an inner lid body and an inner lid wall portion, and a fixed-side wiring region accommodating space is formed on the inner periphery side of the inner lid wall portion, The inner lid wall portion has an opening for drawing out the fixed wiring region to the outside.

5. 4. The wiring member slack take-up unit according to claim 3, The wiring member slack absorption unit, wherein the inner lid or the outer lid has a drawer fixing portion for fixing a drawer fixing target portion located away from a portion of the fixed side wiring region that passes through the intermediate opening.

6. 6. The wiring member slack take-up unit according to claim 5, The wiring member slack absorption unit, wherein the inner lid has the drawer fixing portion.

7. 3. The wiring member slack take-up unit according to claim 1, the fixed-side wiring region has a lead-out fixed target portion at a position away from a portion of the wiring member that passes through the intermediate opening, A wiring member slack absorption unit in which the drawn-out fixed target portion is fixed to the slack absorption case within the fixed side wiring area accommodating space with at least a portion of the fixed side wiring area being slack.

8. 3. The wiring member slack take-up unit according to claim 1, A wiring member slack absorption unit, wherein the slack absorption space is set to a size that allows changes in the size of the spiral formed by the slack portion by pushing the movable wiring region into the slack absorption case.

9. 3. The wiring member slack take-up unit according to claim 1, the wiring member has an internal support target portion located between the movable wiring region and the fixed wiring region, The slack take-up device is a rotating member having a winding core portion that supports the internal support target portion and rotatably supports the winding core portion; a rotation biasing member that biases the rotating member in a direction in which the excess portion is wound up; The wiring member slack absorption unit has the following features.

Images