JP6186238B2 - Harness bending restricting member and harness wiring structure using the same - Google Patents

Description

  The present invention relates to a harness bending restricting member that restricts bending of a protective tube such as a corrugated tube of a wire harness routed from a vehicle body of an automobile to a slide door or the like, and a harness routing structure using the harness bending restriction member.

  Conventionally, various corrugated tube structures have been proposed in order to increase the partial rigidity and the like of a synthetic resin corrugated tube that is a protective tube for a wire harness routed to an automobile or the like. In addition, the wiring harness with corrugated tube is routed horizontally from the vehicle body to the sliding door of the automobile, and the opening and closing direction of the wiring harness with the corrugated tube between the vehicle body and the sliding door as the sliding door opens and closes. Various harness wiring structures that can be bent in a straight line have been proposed.

  For example, in Patent Document 1, a slider having a substantially U-shaped longitudinal section is arranged on the slide door side, and a swing member is provided on the slider so as to freely swing in the vehicle front-rear direction (horizontal direction). It is described that one end of a synthetic resin corrugated tube on the outer periphery is held, and ribs in the longitudinal direction of the reinforcing tube are provided on the top and bottom of the corrugated tube to prevent the wire harness from hanging down.

  The corrugated tube has circumferential grooves and ridges alternately in the longitudinal direction of the tube, and the groove on one end of the corrugated tube engages with the ridges in the hole of the swinging member and is held without being pulled out. Yes. The other end portion of the corrugated tube is similarly held by the harness fixing portion on the vehicle body side. The wire harness is configured by inserting a plurality of electric wires into a corrugated tube.

  Patent Document 2 describes that ribs (convex portions and concave portions) are provided on the left and right side surfaces of the corrugated tube rather than the upper and lower sides. Ribs (projections and recesses) are formed to extend in the longitudinal direction of the corrugated tube.

  Further, in Patent Document 3, when the corrugated tube on the outer periphery of the wire harness routed to the vehicle is inserted into the substantially cylindrical protector, not for supplying power to the slide door, the end of the corrugated tube is attached to the protector. Insert the cylindrical part of the end of the protector inside the end of the corrugated tube, and fit the half-ring-shaped fixing member outside the end of the corrugated tube to fix it firmly to the end. It is described that the end portion of the corrugated tube is sandwiched between the portion and the fixing member.

JP 2009-11136 A (FIGS. 4 to 5) JP 2006-192939 A (FIGS. 1 to 2) Japanese Utility Model Publication No. 6-84726 (FIGS. 1 and 2)

  However, in the structure described in Patent Document 1, for example, the upper and lower ribs of the corrugated tube only prevent the wire harness from hanging down between the sliding door and the vehicle body during the opening and closing of the sliding door. There was a concern that the bending operation (form) of the corrugated tube (wire harness) in the door opening / closing direction may vary, and interference between the corrugated tube and the vehicle body may occur. Moreover, in the structure described in patent document 2, since the rib was formed over the full length of the corrugated tube, there was a concern that the cost of the corrugated tube would be increased.

  Generally, it is necessary to ensure a larger bending radius of the wire harness as the occupation ratio of the plurality of electric wires in the protective tube is higher. When the occupation rate of the plurality of electric wires in the protection tube is low and the protection tube has high rigidity, the protection tube itself is likely to buckle. The above-mentioned concerns are not limited to the sliding doors of automobiles, but can also occur in power feeding to sliding doors of vehicles other than automobiles, sliding doors of devices other than vehicles, and the like. These slide doors and the like are collectively referred to as a slide structure, and the vehicle body and the like are collectively referred to as a fixed structure.

  Further, in the structure described in Patent Document 3, when the corrugated tube is swung in the bending direction in order to sandwich the end portion of the corrugated tube between the cylindrical portion of the protector and the fixing member, the cylindrical portion or There is a concern that excessive stress acts on the corrugated tube at the end of the fixing member, and the corrugated tube may be damaged.

  The present invention has been made in view of the above points, and an object thereof is to provide a harness bending restricting member capable of smoothly and reliably bending a protective tube without damaging a protective tube such as a corrugated tube of a wire harness. . This also ensures the minimum bending radius of the wire harness with the protective tube between the slide structure and the fixed structure, and the wire harness can be bent smoothly without buckling, etc. An object of the present invention is to provide a harness routing structure using a harness bending restricting member that can be increased or prevent interference between a protective tube and a fixed structure.

In order to achieve the above object, a harness bend restricting member according to claim 1 of the present invention is a harness bend restricting member attached to the outside of a flexible harness protective tube, and has a rigidity that covers the harness protective tube. A non-bendable portion, and a bendable portion that protrudes in the axial direction from the distal end side of the non-bendable portion and regulates the bending of the harness protection tube in a curved shape, and the protrusion length of the bendable portion is It is characterized by being shorter than the length of the inflexible part .

  With the above configuration, when a bending force is applied to the harness protection tube, the unbendable portion of the harness bend restricting member comes into contact with the outer surface of the end portion of the harness protection tube, for example, and the end portion is bent straightly, for example, and cannot be bent. The bendable part following the part comes into contact with the outer surface of the part continuing to the end of the harness protection tube, and the part is bent to be bent.

The harness bend restricting member according to claim 2 is a harness bend restricting member attached to the outside of the flexible harness protection tube, and includes a rigid unbendable portion covering the harness protection tube, And a bendable portion that protrudes in the axial direction from the distal end side and restricts the harness protection tube to be bent, and the non-bendable portion is formed in a bowl shape deeper than the radius of the harness protection tube. The bendable part is arranged at a position corresponding to the central axis of the protective tube .

  With the above configuration, the harness protection tube can be easily inserted (inserted and mounted) in the radial direction from the laterally long opening of the hook-like non-bendable portion, and the non-bendable portion deeper than the radius of the harness protection tube Retained. The non-bendable portion covers the harness protection tube to a position deeper than its radius and reliably prevents the harness protection tube from bending. The bendable portion is disposed along the central axis of the harness protection tube, and reliably receives the bending force of the harness protection tube and reliably regulates bending.

The harness bend restricting member according to claim 3 is the harness bend restricting member according to claim 1 or 2, wherein the bendable portion has a plurality of slits or grooves in parallel on the outer surface side, The bending control is performed by the opposing inner surfaces abutting each other. With the above configuration, when the bendable portion is bent in the outer surface direction (outer surface side), the inner surfaces facing each of the slits or groove portions contact each other, and further bending of the bendable portion is prevented. When the bendable portion is bent in the inner surface direction (inner surface side), each slit or groove is opened, so the bendable portion can be bent easily with a smaller bending radius than when bending in the outer surface direction. .
A harness bending restricting member according to a fourth aspect is the harness bending restricting member according to any one of the first to third aspects, wherein the harness bending restricting member is engaged with a plurality of parallel grooves in the circumferential direction of the corrugated tube that is the harness protection tube. A plurality of protrusions are provided on the inner surface of the unbendable portion.

  With the above configuration, the parallel protrusions on the inner surface of the non-bendable portion are engaged with the parallel concave grooves of the corrugated tube, so that the corrugated tube portion on the inner side of the non-bendable portion and the axial expansion and contraction are ensured. In addition to being blocked, the non-bendable portion is firmly held in the corrugated tube in the axial direction (if the corrugated tube has an oval cross section, the non-bendable portion is also immovable in the circumferential direction). The corrugated tube is a flexible existing harness protection tube having a circular or oval cross section in which circumferential grooves and ridges are arranged in parallel in the tube longitudinal direction.

  In the harness routing structure using the harness bending restricting member according to claim 5, the harness protection tube is routed from the swinging member on the fixed structure side to the swinging member on the slide structure side, and the harness holding is held on the fixed structure side. The harness bending restricting member according to any one of claims 1 to 4 is attached to an outer side of the tube, and the bendable portion is disposed toward the slide structure along the outer surface of the harness protection tube. And

  With the above configuration, for example, when the slide structure is opened from the fully closed state, the harness bending restricting member maintains the harness protection tube on the fixed structure side substantially straight to restrict the bending, and when the slide structure is half open, The harness protection tube is supported by the bendable part of the harness bend restricting member to ensure the minimum bend radius, and is bent to be bent without buckling or bending. Bends smoothly in an S shape.

  Also, when the slide structure is opened from half open to full open, the harness protection tube is pulled between the two swinging members and stretches to try to interfere with a part of the fixed structure. The harness protection tube on the fixed structure side is restricted to be bent straight at the impossible portion and protrudes in the thickness direction of the slide structure, thereby preventing interference between the harness protection tube and the fixed structure.

  According to the first aspect of the present invention, the harness protection tube of the wire harness can be bent and smoothly bent without being bent by the unbendable portion of the harness bend restricting member and the bendable portion subsequent thereto. Thereby, bending regulation of a harness protection tube can be performed smoothly and reliably, without damaging harness protection tubes, such as a corrugated tube.

  According to the second aspect of the invention, when the bendable portion is bent in the outer surface direction, the opposing inner surfaces of each slit or each groove portion are brought into contact with each other to prevent further bending of the bendable portion. it can.

  According to the invention of claim 3, the harness bending restricting member can be easily attached to the harness protection tube, and the bending corresponding to the unbendable portion deeper than the radius of the harness protection tube and the central axis of the harness protection tube The bending restriction of the harness protection tube can be smoothly and reliably performed with the possible portion.

  According to the fourth aspect of the present invention, the unbendable portion of the harness bending restricting member can be firmly held on the corrugated tube at least in the axial direction without being displaced, thereby restricting the bending of the required portion of the corrugated tube. It can be done reliably.

  According to the invention of claim 5, the minimum bending radius of the wire harness with the harness protection tube between the slide structure and the fixed structure when the slide structure is half-opened by the harness bend restricting member disposed on the fixed structure side. The wire harness is bent flexibly without buckling, etc. to ensure the bending durability of the wire harness, and it is possible to prevent the interference between the harness protection tube and the fixed structure when the slide structure is fully opened. The reliability of the constant power supply to the structure can be improved.

1 is a perspective view showing a first embodiment of a harness bending restricting member according to the present invention. It is the perspective view which similarly looked at the harness bending | flexion control member from the opposite direction. It is a front view of a harness bending restricting member. It is a top view (bottom view) which similarly shows the inner side of a harness bending control member. It is a perspective view which shows 2nd embodiment of a harness bending control member. It is a top view which shows one Embodiment of the harness wiring structure using the harness bending | flexion control member which concerns on this invention. It is a disassembled perspective view which shows one Embodiment of the outer member of the electric power feeder of the vehicle body side in a harness wiring structure. It is an exploded perspective view showing one embodiment of an inner member (oscillation member) of a power supply device by the side of a vehicle body similarly.

  1 and 5 show embodiments of the harness bending restricting member according to the present invention.

  Each of these harness bending restricting members 1 and 2 is attached to the outside of a synthetic resin corrugated tube (harness protection tube) 8. Each harness bending restricting member 1, 2 is made of a synthetic resin material and has a cross-sectional shape corresponding to the corrugated tube 8 having an oval cross section. The corrugated tube 8 is an existing tube in which circumferential grooves 8a and ridges 8b (FIG. 1) are alternately arranged in the longitudinal direction of the tube.

  The harness bending restricting member 1 shown in FIGS. 1 to 4 includes, as shown in FIG. 1, a rigid hook-shaped portion (unbendable portion or high-rigidity portion) 3 having a substantially inverted U-shaped cross section and a short diameter of the hook-shaped portion 3. A flexible projecting portion (bendable or low-rigidity portion) 4 integrally extending in the axial direction (longitudinal direction) from the distal end side 3b of the bowl-shaped portion 3 on one side portion (one side wall) 3a on the side; The protrusion 4 has a plurality of vertical slits 5 in parallel on the outer surface 4a side.

  The hook-shaped part 3 includes an upper arc-shaped part 3c and side wall parts 3a, 3a 'suspended from the left and right of the arc-shaped part 3c. A thick projecting wall 6 having a rectangular longitudinal section is integrally provided on one side wall 3a, and the projecting wall 6 extends straight from the tip 3b of the bowl-shaped portion 3 in the axial direction (forward) to form a projecting wall 9. A flexible support plate (connecting plate) 10 that is wider in the vertical direction than the protruding wall 9 and thin in the inner and outer directions is integrally provided on the inner surface side of the protruding wall 9.

  A plurality of longitudinal slits 5 are provided in the projecting wall 9 in parallel (parallel) at the same pitch in the longitudinal direction of the projecting wall 9, and each slit 5 is notched from the outer surface 4 a of the projecting wall 9 to the outer surface 10 a of the support plate 10. A protruding wall 9 is formed in a rectangular block shape between the slits 5, and a flexible protruding portion (bendable portion) is formed by the protruding wall 9 made up of each rectangular block portion 9 a, each slit 5, and the support plate 10. 4 is configured.

  The inner width of the slit 5 is defined to be about 1/4 of the width in the front-rear direction of the block portion 9a. The slit 5 may be referred to as a groove. The opposing inner surfaces of the adjacent block portions 9a form front and rear end surfaces (opposing inner surfaces 5a) of the slit 5. By appropriately setting the inner width dimension of the slit 5, the bending radius of the protrusion 4 in the arrow A direction can be appropriately defined.

  When the corrugated tube 8 is bent in the direction of arrow A, the flexible protrusion 4 is pushed by the outer surface of one side portion 8c of the corrugated tube 8 and bent to the outer surface 4a side (direction). When the protruding portion 4 is bent (bent) to some extent, the opposed inner surfaces 5a of the slits 5 of the protruding portion 4, that is, the opposed inner surfaces of the adjacent block portions 9a come into contact with each other, and beyond that of the protruding portion 4 Is prevented from bending. A wire harness is comprised by a corrugated tube and the several electric wire penetrated by the internal space.

The protruding length of the protruding portion 4 in this example is defined to be slightly shorter than the length of the bowl-shaped portion 3. Slit 5 ₁ proximal of the slit 5 is positioned on the distal end 3b the same surface of the gutter-shaped portion 3. The thickness of each block portion 9 a in this example is approximately four times the thickness of the support plate 10. The front end 10b of the support plate 10 protrudes slightly forward from the leading block portion 9a ₁₀ , and the upper and lower ends of the support plate 10 in the width direction also protrude slightly above and below the block portions 9a. The base end 10 c of the support plate 10 continues to the front end surface 3 b of the flange 3.

  A plurality of protrusions 11 projecting inward from the front end surface 3 b of the flange-shaped part 3 are provided in parallel on the inner surface of the flange-shaped part 3, and grooves 12 are formed between the protrusions 11. Each protrusion 11 is formed in a substantially inverted U shape along the inner peripheral surface of the bowl-shaped portion 3. Each protrusion 11 engages with each concave groove 8 a of the corrugated tube 8 to position and hold the harness bending restricting member 1 on the outside of the corrugated tube 8 so as not to move axially. Since the corrugated tube 8 has an oval cross section and the hook-shaped portion 3 has an inverted U-shaped cross section, the harness bending restricting member 1 does not move in the circumferential direction of the corrugated tube 8.

  In order to completely fix the harness bending restricting member 1 to the corrugated tube 8, for example, the hook-shaped portion 3 can be fastened to the corrugated tube 8 with an unshown adhesive tape winding or a binding band. Covering the corrugated tube 3 from above is preferable in terms of workability and prevention of dropping and vertical displacement as compared to covering the corrugated tube 8 from above. For example, it is preferable to fix the distal end portion of the protruding portion 4 to the corrugated tube 8 by tape winding or the like in order to increase the restoring force of the protruding portion 4 in the direction opposite to the arrow A.

  The protruding wall 6 provided on the one side wall 3a of the bowl-shaped part 3 acts to increase the bending rigidity of the one side wall 3a of the bowl-shaped part 3. When the one side wall 3a has sufficient rigidity, the long protruding wall 6 is excluded, a short protruding wall (6) is formed in the vicinity of the tip 3b of the one side wall 3a, and the short protruding wall (6) is moved forward. It is also possible to extend the flexible protruding wall 9.

  As shown in FIG. 2, the support plate (connecting plate) 10 of the protrusion 4 has a flat inner surface 4b. At the base end 10 c of the support plate 10, the inner surface 4 b is located on the same plane as the inner surface of the one side wall 3 a of the bowl-shaped portion 3. A plurality of protrusions 11 are provided on the inner surface of the bowl-shaped portion 3.

  As shown in FIGS. 2 and 3, the one side wall 3a and the other side wall 3a 'of the bowl-shaped portion 3 are parallel to each other, and the heights of the side walls 3a and 3a' are the same. A horizontally long lower opening 13a, a corrugated tube housing space 13 continuing on the upper side of the lower opening 13a, and inverted U-shaped openings 13b before and after the corrugated tube housing space 13 are formed between the side walls 3a and 3a ′. Yes.

  As shown in FIG. 3, the lower ends of the ridges 11 on both side walls 3a, 3a ′ of the bowl-shaped portion 3 are inclined in a tapered shape to form an insertion guide surface 11a for the concave groove 8a of the corrugated tube 8 (FIG. 1). . The lower end 9a of the projecting wall 9 projecting forward from the tip of the one side wall 3a and the lower end 10d of the support plate 10 are positioned above the lower end 11a of the one side wall 3a, and support the projecting wall 9 (the plurality of block portions 9a). The center in the height direction with respect to the plate 10 is arranged at the same height as the central axis of the corrugated tube 8 (FIG. 1) held in the bowl-shaped portion 3.

  As shown in FIGS. 3 and 4, the protrusion 11 on the inner surface side of the arc-shaped upper wall 3 c of the bowl-shaped portion 3 is provided with ribs for preventing the drooping at the upper end of the upper and lower ends of the corrugated tube 8 (FIG. 1). A groove 13c that engages (not shown) is provided in the axial direction. The groove 13c is unnecessary when there is no rib for preventing the drooping.

  As shown in FIG. 4 (bottom view), the protruding wall 6 along one side wall 3a of the bowl-shaped portion 3 and the plurality of block portions 9a forming the flexible protruding wall 9 protruding forward from the protruding wall 6 include: Hollow portions 6a and 9c that open downward are formed, and the protruding wall 6 and the block portions 9a are reduced in weight. In the specification, the vertical and horizontal directions are for convenience of explanation.

  The harness bending restricting member 2 shown in FIG. 5 has a shape of the protruding wall 15 along the one side wall 3a of the bowl-shaped portion 3 and an axial direction from the tip 3b of the one side wall 3a as compared with the harness bending restricting member 1 of FIG. The shape of the projecting flexible projecting portion 16 is changed. Since other configurations of the hook-shaped portion 3 and the corrugated tube 8 are the same as those in FIG. 1, detailed description thereof is omitted.

  As shown in FIG. 5, the protruding wall 15 along the one side wall 3a of the bowl-shaped portion 3 has a vertical plate thickness that is defined to be smaller than the plate width in the left-right direction, and forms a horizontal protruding plate portion. The protruding portion 16 that protrudes in the axial direction from the tip 3b of the one side wall 3a protrudes (extends integrally) forward from the tip surface 3b of the one side wall 3a to be thinner than the plate thickness of the one side wall 3a. A plurality of rectangles integrally provided on the outer surface 17a of the support plate 17 extending forward from the support plate (connection plate) 17 and the protruding wall 15 of the one side wall 3a of the bowl-shaped portion 3 with the same thickness and width. It is comprised by the flexible protrusion wall 18 which consists of the block part 18a and the slit 19 between each block part 18a.

  The protrusion 16 of this example is formed shorter than the protrusion 4 of FIG. 1 and is useful for restricting the bending of the corrugated tube 8 in a relatively short range. The support plate 17 is formed in a tapered shape in which the width dimension in the vertical direction is gradually reduced toward the tip. As a result, the support plate 17 is easier to bend with a small radius at the portion closer to the distal end 17b (first half) than at the portion closer to the base end 17c (second half).

  The front end portion 17b of the support plate 17 is curved outward and protrudes outward with a length equal to or longer than each block portion 18a, and is axially along the outer surface of one side portion 8c of the corrugated tube 8 When the corrugated tube 8 is bent in the direction of arrow A (in the direction of the outer surface 16a of the protruding portion 16), the side portion 8c of the corrugated tube 8 is The tip of the support plate 17 is not interfered with and damaged.

  The vertical width of the support plate 17 is defined to be sufficiently larger than the vertical width (plate thickness) of each block portion 18 a, and the flat inner surface of the support plate 17 is larger than the outer surface of the one side portion 8 c of the corrugated tube 8. Contact by area. Each block portion 18a is defined such that the width in the protruding direction and the width in the front-rear direction are sufficiently larger than the width (plate thickness) in the vertical direction, and the interval between the front and back inner surfaces 19a of the slits 19 between the block portions 18a ( Inner width), that is, a gap (19) between adjacent block portions 18a is defined to be sufficiently smaller than the width of each block portion 18a in the front-rear direction.

  By appropriately setting the inner width of each slit 19, the bending radius of the protruding portion 16 can be appropriately defined. For example, the inner width of each slit 19 closer to the proximal end 17c (second half) of the protruding portion 16 is set smaller, the inner width of each slit 19 closer to the distal end 17b (first half) is set larger, or the proximal end of the protruding portion 16 is increased. It is also possible to bend the first half of the protrusion 16 with a smaller radius than the second half by gradually defining the inner width of each slit 19 from 17c to the tip 17b. The same applies to the protrusion 4 in the embodiment of FIG.

  The depth of the corrugated tube housing (insertion) space 13 inside the bowl-shaped part 3 is defined to be larger than half the radius (radius) of the corrugated tube 8 having an oval cross-section, and the protruding part 16 is a part of the bowl-shaped part 3. It protrudes along the central axis of the corrugated tube 8 from the tip 3b of the side wall 3a. A plurality of substantially inverted U-shaped ribs 11 that are engaged with the respective concave grooves 8 a of the corrugated tube 8 are provided in parallel at equal pitches on the inner surface side of the bowl-shaped portion 3.

  FIG. 6 shows an embodiment of a harness routing structure using the harness bending restricting member according to the present invention. For the sake of convenience, an example using the bending restriction member 1 in FIG. 1 as the harness bending restriction member will be described.

  In this harness routing structure, the wire harness 55 is routed from the power supply device 52 on the vehicle body (fixed structure) 51 side of the automobile to the power supply device 54 on the slide door (slide structure) 53 side. In the right side, the sliding door 53 is shown in a fully closed state, the middle figure shows the sliding door 53 in a half-opened state, and the left figure shows the sliding door 53 in a fully opened state. The slide door 53 opens from the vehicle front side toward the vehicle rear side.

  The sliding door 53 is separated from the entrance of the vehicle body 51 to the outside of the vehicle at the initial opening. Each of the power feeding devices 52 and 54 includes a swinging member (not shown) that can swing in the horizontal direction and support members 56 and 57 that support the swinging member. The end portions 8c and 8g of the corrugated tube (harness protection tube) 8 on the outer peripheral side of the wire harness 55 are held by the swinging members of the power feeding devices 52 and 54, respectively. The wire harness 55 includes a corrugated tube 8 and a plurality of electric wires 58 inserted inside thereof. In FIG. 6, reference numeral 51 denotes a lower rear portion of the step portion of the vehicle body entrance / exit, and reference numeral 53 denotes a door inner panel of the slide door.

  The harness bending restricting member 1 is attached to the outside of the corrugated tube 8 on the side of the power feeding device 52 on the vehicle body side, and the hook-shaped portion (unbendable portion) 3 of the bending restricting member 1 is disposed at one end 8c of the corrugated tube 8. The projecting portion (bendable portion) 4 is located on the vehicle outer side (when the door is fully closed) or the vehicle rear side (when the door is half-opened and fully opened) at the intermediate portion 8f in the longitudinal direction following the one end portion 8c of the corrugated tube 8. It arrange | positions along the outer surface of a bending inner part.

  As shown on the right side of FIG. 6, when the slide door 53 is fully closed, the corrugated tube 8 of the wire harness 55 is routed in a state of extending almost straight from the vehicle body side power supply device 52 to the slide door side power supply device 54. Is done. The protrusion 4 of the bending restricting member 1 is positioned substantially straight along the corrugated tube 8.

  6, when the sliding door 53 is half open, the flange portion 3 of the bending regulating member 1 prevents the corrugated tube 8 from bending, and the inner surface 4b (FIG. 2) of the protruding portion 4 is on the vehicle body side. The corrugated tube portion 8f near the power feeding device 52 is pushed by the outer surface on the rear side of the vehicle, and the protruding portion 4 bends in a curved shape toward the vehicle outer side, and the corrugated near the power feeding device 52 on the vehicle body side together with the protruding portion 4. The tube portion 8f is bent forward in a substantially U shape (the bent portion is indicated by reference numeral 8h). That is, the protrusion 4 restricts the corrugated tube portion 8f to bend in a curved shape (prevents further bending of the corrugated tube portion 8f). As a result, the corrugated tube portion near the power feeding device 54 on the sliding door side is bent backward in a substantially U shape (the bent portion is indicated by reference numeral 8j), and the corrugated tube 8 as a whole is bent smoothly in a substantially S shape. .

  When the sliding door 53 is opened from the fully closed position, the corrugated tube portion near the power feeding device 52 on the vehicle body side is kept in a state of being substantially straightened by being prevented from being bent (8h) by the hook-shaped portion 3 of the bending regulating member 1. (Bending restriction).

  Then, a rearward substantially U-shaped bent portion 8j of the corrugated tube portion 8m near the power feeding device 54 on the slide door side is formed, and a substantially forward U-shape of the corrugated tube portion 8f near the power feeding device 52 on the vehicle body side is formed. The curved bent portion 8h is bent in a curved shape by the protruding portion 4 of the bending restricting member 1, and the corrugated tube 8 is buckled while the minimum bending radius is secured between the power feeding devices 52 and 54. It bends smoothly in a substantially S shape. Thereby, bending durability (corresponding to the wire harness 55) between the corrugated tube 8 and the plurality of electric wires 58 inserted through the corrugated tube 8 is enhanced. When the sliding door 53 is fully closed and half open, the swinging members (not shown) of the power feeding devices 52 and 54 are slightly rotated.

  6, when the slide door 53 is fully opened, the power supply device 54 on the slide door side is located behind the power supply device 52 on the vehicle body side, and the swinging member of the power supply device 52 on the vehicle body side is located. Is pivoted counterclockwise from the front and stopped, and the swinging member of the power feeding device 54 on the sliding door side is pivoted counterclockwise from the rear and moved between the power feeding devices 52 and 54. The corrugated tube 8 is pulled backward. The wire harness 55 swings between the vehicle body 51 and the slide door 53 from the vehicle front side to the vehicle rear side with the power supply device 52 on the vehicle body side as a fulcrum.

  When the slide door 53 is fully opened, the longitudinal intermediate portion 8k of the corrugated tube 8 is likely to interfere with the lower rear end 51a of the entrance / exit of the vehicle body 51 (the power supply device 52 on the vehicle body side is a step portion of the entrance / exit). The inner surface of the hook-shaped portion 3 of the bending restricting member 1 is in contact with the outer surface of the one end portion 8c of the corrugated tube 8 near the power feeding device 52 on the vehicle body side. 8 is prevented from extending linearly toward the rear of the vehicle, and the one end portion 8c of the corrugated tube 8 is protruded from the power supply device 52 on the vehicle body side toward the outside of the vehicle in the sliding door thickness direction.

  As a result, the corrugated tube portion 8f following the one end portion 8c is spaced outward from the vehicle body 51 to prevent interference between the longitudinal intermediate portion 8k of the corrugated tube 8 and the lower rear end 51a of the entrance / exit of the vehicle body 51. Is done. As a result, the corrugated tube 8 is prevented from being worn or damaged, and the plurality of electric wires 58 routed inside the corrugated tube 8 are safely protected. The protrusion 4 of the bending restricting member 1 is bent with a large radius together with the corrugated tube portion 8f without contacting the inner surface 5a of each slit 5 (FIG. 1) (the bent portion of the corrugated tube is indicated by reference numeral 8n).

  Particularly when the sliding door 53 is half open, the bending restricting member 1 includes a rigid hook-shaped part (unbendable part) 3 and a flexible protrusion (bendable part) 4. Compared with the case where a bending restricting member (not shown) having only the portion 3 is used, the corrugated tube 8 can be bent with a quadratic curve by the protruding portion 4, and the corrugated tube 8 can be prevented from being bent. it can.

  Although the example using the bending restricting member 1 of FIG. 1 has been described with reference to FIG. 6, the protruding portion 4 exhibits the same action as described above even when the bending restricting member 2 of FIG. 5 is used. In order to improve the contact position accuracy between the projecting portions 4 and 16 and the corrugated tube 8 in each embodiment, the slits 5 and 19 of the projecting portions 4 and 16 and the concave groove 8a of the corrugated tube 8 are connected with a thin unillustrated binding line or the like. It is also possible to hold them together.

  7 to 8 show one embodiment of the power feeding device 52 on the vehicle body side in FIG. 6 for reference. FIG. 7 shows the support member 56 of the power feeding device 52, and FIG. 8 shows the swinging member 61 of the power feeding device 52. The support member 56 is also called an outer member, and the swinging member 61 is also called an inner member, a rotating member, or a rotating body.

  The support member 56 shown in FIG. 7 includes a lower base member 62 and an upper cover member 63 made of synthetic resin. The swinging member 61 of FIG. 8 is supported between the base member 62 and the cover member 63 so as to be able to rotate (swing) in the horizontal direction. The base member 62 and the cover member 63 are joined and fixed to each other by locking means (such as a locking claw 64 and a locking recess 65).

  The base member 62 includes a horizontal substrate portion 66, a circular bearing hole 67 provided at the center of the disc-like portion 66 a of the substrate portion 66, and side walls 68 erected on both the left and right sides of the substrate portion 66. The front and rear openings 68a and 68b formed between the side walls 68 and a horizontal harness lead-out wall 69 following the rear opening 68b are provided. In FIG. 7, the front opening 68a is disposed toward the slide door 53 of FIG.

  The cover member 63 includes left and right side walls 70 that overlap with both side walls 68 of the base member 62, a horizontal ceiling wall 71 that faces the substrate portion 66 and the harness lead-out wall 69, and a ceiling wall that faces the shaft support hole 67. 71 and a circular bearing hole (not shown) provided in the disc-shaped portion 71a. In FIG. 6, a part of the substrate portion 66 of the base member 62 and the cover member 63 are shown in a plan view.

  The swinging member 61 shown in FIG. 8 includes a lower small base portion 72 and an upper large cover portion 73. The base portion 72 and the cover portion 73 are combined with each other to form locking means (locking claws). 74 and a locking recess 75). The base portion 72 includes a substantially circular substrate portion 76, a corrugated tube holding portion 77 provided on the front half side of the substrate portion 76, arc-shaped side walls 78 erected on the left and right sides of the corrugated tube holding portion 77, and a substrate And a vertical circular shaft portion 79 provided at the center of the lower surface of the portion 76.

  The corrugated tube holding portion 77 has a plurality of arc-shaped ribs 80 arranged in parallel in the front-rear direction at an equal pitch, and an arc-shaped groove portion 81 formed adjacent to the rear of the rib 80 and adjacent to the rear of the groove 81. And an arcuate stopper wall 82 provided. Each rib 80 is engaged with each groove 8 a on the outer periphery of one end of the corrugated tube 8. The shaft portion 79 is rotatably engaged with the bearing hole 67 of the base member 62.

  The cover portion 73 includes a substantially circular top wall 83, an arc-shaped side wall 84 suspended from the left and right of the top wall 83, an inverted U-shaped harness insertion groove 84 formed between both side walls 84, A corrugated tube holding portion 77 provided on the front half side of the harness insertion groove 84 and a circular shaft portion 86 standing at the center of the upper surface of the top wall 83 are provided. The proximal end 3d of the hook-shaped portion 3 of the harness bending restricting members 1 and 2 (FIGS. 1 and 5) is located in contact with or in close proximity along the reverse U-shaped front opening 77a of the corrugated tube holding portion 77.

  The corrugated tube holding portion 77 is adjacent to a plurality of substantially U-shaped ribs 80 arranged in parallel in the front-rear direction, a substantially U-shaped groove portion 81 formed adjacent to the rear of the rib 80, and the rear of the groove portion 81. And a substantially U-shaped stopper wall 82. The rib 80 faces the rib 80 of the base portion 72, the groove portion 81 faces the groove portion 81 of the base portion 72, and the stopper wall 82 faces the stopper wall 82 of the base portion 72. Each rib 80 is engaged with each groove 8 a on the outer peripheral side of one end of the corrugated tube 8. The shaft portion 86 is rotatably engaged with a bearing hole (not shown) of the cover member 63.

  6 includes a swinging member (an inner member or a rotating member or a rotating body) (not shown) that is substantially the same as that of the power feeding device 52 on the vehicle body side, and a swinging member that rotates the swinging member in the horizontal direction. (Swing) A support member 57 composed of a lower base member and an upper cover member 90 that are freely supported, and a harness guide guide 91 provided on the upper side of the upper cover member 90. Yes. The support member 57 has a vertical back wall 92, and the back wall 92 is fixed to the door inner panel 53 of the sliding door by screwing or the like.

  In the above-described embodiment, the corrugated tube 8 is used as the harness protection tube. However, instead of the corrugated tube 8, for example, a flexible reticulated tube made of synthetic resin can be used. In this case, instead of the rib 80 of the tube holding portion 77 of the swinging member 61, the end of the reticulated tube is held and fixed using a not-shown penetrating protrusion or a clamping portion.

  The harness bending restricting member and the harness routing structure using the same according to the present invention smoothly and reliably perform the bending restriction of the protective tube without damaging the protective tube such as the corrugated tube of the wire harness. The minimum bending radius of the wire harness with the protective tube is ensured between the slide structure and the fixed structure, and the wire harness is bent smoothly without buckling, etc., and the wire harness is bent and protected. It can be used to prevent interference between the tube and the fixed structure.

1, 2 Harness bending restricting member 3 Saddle-shaped part
4,16 Projection (bendable part)
5, 19 Slit 5a, 19a Inner surface 8 Corrugated tube (harness protection tube)
8a groove 11 ridge 51 vehicle body (fixed structure)
53 Sliding door (sliding structure)
61 Swing member

Claims (5)

A harness bending restricting member mounted on the outside of the flexible harness protection tube, formed of a rigid non-bendable portion covering the harness protection tube, and protruding in the axial direction from the distal end side of the non-bendable portion, A bendable portion that regulates the bending of the harness protection tube in a curved shape ,
The harness bending restricting member , wherein a protruding length of the bendable portion is shorter than a length of the unbendable portion . A harness bending restricting member mounted on the outside of the flexible harness protection tube, formed of a rigid non-bendable portion covering the harness protection tube, and protruding in the axial direction from the distal end side of the non-bendable portion, A bendable portion that regulates the bending of the harness protection tube in a curved shape,
The bent impossible portion is formed in a deep trough than the radius of the harness protecting tube, features and be Ruha harness flexion limit that the bendable portion at a position corresponding to the center axis of the harness protection tube is arranged Element. The bendable portion has parallel a plurality of slits or grooves on the outer surface side, according to claim 1 or claim opposing inner surfaces of the slit or groove, characterized in that the flexion limit contact with each other is performed harness bending regulating member 2 described.   4. A plurality of protrusions that engage with a plurality of parallel grooves in the circumferential direction of the corrugated tube that is the harness protection tube are provided on an inner surface of the non-bendable portion. The harness bending restricting member according to claim 1. The harness protection tube according to any one of claims 1 to 4, wherein the harness protection tube is routed from the swinging member on the fixed structure side to the swinging member on the slide structure side, and outside the harness holding tube on the fixed structure side. A harness routing structure using a harness bending restricting member, wherein a member is mounted, and the bendable portion is disposed toward the slide structure along the outer surface of the harness protection tube.

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