JP2018191384A - Drainage protector and drainage structure of wire harness using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage protector in a novel structure capable of stably holding a drainage structure of a wire harness without fixing a U-turn part of the wire harness to a vehicle, and the drainage structure of the wire harness using the same.SOLUTION: The present invention relates to a drainage protector 10 that is mounted in a wire harness 32. The drainage protector comprises: a fixing spatula part 12 which is fixed to the wire harness 32; and a U-turn guide part 14 protruding from one end side of the fixing spatula part 12 and extending in a U-turn shape. The U-turn guide part 14 includes: a U-shaped harness support plate 16 on which the wire harness 32 is placed; and a guide wall part 18 extending in a plate thickness direction in a U-shaped cross-sectional shape from an inner peripheral edge part of the harness support plate 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drainage protector that is attached to a wire harness routed in an automobile and promotes drainage of water droplets and the like attached to the wire harness, and a drainage structure of a wire harness using the drainage protector.

  Conventionally, in wire harnesses routed to various locations in a vehicle, cases where water such as water droplets are attached are assumed, and water attached to the wire harness travels along the wire harness to connect to electrical equipment, vehicle interiors, etc. It is necessary to prevent reaching the waterproof area. Therefore, as shown in FIG. 6 of JP-A-11-136831 (Patent Document 1), in the vicinity of the waterproof area, a U-turn portion is formed by bending the wire harness downward in a U-shape. A structure has been widely adopted in which the binding tape at the lower end of the water is peeled off to form the drainage portion, and the water is drained from the drainage portion before the water reaches the waterproof area.

  Further, in FIG. 3 and the like of Patent Document 1, it has been proposed to attach a drainage protector having an air supply port to the U-turn part, and the wire is supplied by air supplied from an air duct connected to the air supply port. A structure for draining water adhering to the drainage portion of the harness in a shorter time has also been proposed.

  However, in the structure disclosed in FIG. 6 of Patent Document 1, it is necessary to fix and hold the lower end portion of the U-turn portion of the wire harness on the vehicle side with a clip or the like. The structure disclosed in FIG. 3 and the like of Patent Document 1 also discloses a structure that is fixed to the vehicle side with a clip protruding from a drainage protector attached to the U-turn portion. Therefore, due to vehicle layout requirements and the like, if the mounting hole for fixing the clip cannot be provided on the vehicle side at the location where the U-shaped U-turn portion is desired, the adoption itself may be difficult.

  On the other hand, it is conceivable to provide a bracket or the like with a mounting hole on the vehicle side, but an increase in the number of parts and an increase in cost are inevitable, and depending on the vehicle, there may be no space to provide a bracket. Effective measures were required.

JP-A-11-136831

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is to stably hold the draining structure of the wire harness without fixing the U-turn portion of the wire harness to the vehicle. It is an object of the present invention to provide a drainage protector having a novel structure and a drainage structure for a wire harness using the same.

  A drainer protector mounted on a wire harness, comprising: a fixing spatula portion fixed to the wire harness; and a U-turn guide portion projecting from one end side of the fixing spatula portion and extending in a U-turn shape The U-turn guide portion includes a U-shaped harness support plate on which the wire harness is placed, and a guide wall portion that protrudes in the thickness direction from the inner peripheral edge of the harness support plate in a U-shaped cross-sectional shape. It is characterized by having.

  According to this aspect, since the drainage protector has the fixing spatula portion fixed to the wire harness, the drainage protector can be fixed to the wire harness itself and positioned and held. Furthermore, a U-turn guide part that protrudes in a U-turn shape from one end side of the fixing spatula part is provided. The U-turn guide portion has a U-shaped harness support plate and a guide wall portion that protrudes in a U-shaped cross section from the inner peripheral edge of the harness support plate. Therefore, the wire harness extending from the fixing spatula side is placed on the harness support plate of the U-turn guide part and disposed along the guide wall part. A turn part can be provided stably.

  Thus, in the wire harness, in the vicinity of the waterproof area such as the connection portion with the electric device or the insertion hole to the vehicle interior side, the U-turn portion is attached to the desired position of the wire harness only by attaching the drainage protector of the present invention. In addition to being able to be configured, the need for fixing to the vehicle body can be eliminated by positioning and fixing the drainage protector itself to the wire harness. As a result, by using the drainage protector of the present invention, the U-turn portion is provided in the wire harness even when the mounting hole for fixing the fixing clip cannot be provided on the vehicle side in the vicinity of the lower end portion of the U-turn portion. The wire harness draining structure using the U-turn shape can be provided with excellent versatility.

  In addition, since the guide wall portion of the U-turn guide portion is provided so as to protrude in the thickness direction from the inner peripheral edge portion of the harness support plate in a U-shaped cross-sectional shape, the wire harness protrudes downward. While maintaining a stable turn, it does not hinder downward drainage at the U-turn portion of the wire harness.

  Note that the fixing spatula portion of the drainage protector may be overlapped with the wire harness and fixed with a binding tape or the like, or may be fixed with a binding band or the like. Further, the U-turn guide portion of the drainer protector is bound in any region except for the lowermost end of the U-turn portion with respect to the wire harness that is curved and arranged in a U-turn shape along the U-turn guide portion. The tape may be fixed with a tape or the like, or may be fixed with a binding band or the like.

  The second aspect of the present invention relating to the drainer protector is the drainer protector according to the first aspect, wherein the harness support plate of the U-turn guide part has a reinforcing plate part that connects the inner peripheral edge parts. It is what.

  According to this aspect, since the harness support plate has the reinforcing plate portion that connects the inner peripheral edge portions, the rigidity of the harness support plate and the U-turn guide portion is ensured, and the wire harness is formed in a U-turn shape. Can be held stably.

  A third aspect of the present invention relating to the drainage protector is the drainage protector according to the first or second aspect, wherein the U-turn guide part is opposite to the surface of the harness support plate from which the guide wall part protrudes. In this aspect, reinforcing ribs are provided so as to protrude and extend on a straight line connecting both ends of the harness support plate.

  According to this aspect, the rigidity of the whole drainage protector can be increased and deformation can be prevented, and the U-turn portion of the wire harness can be held more stably.

  According to a fourth aspect of the present invention relating to the drainage protector, in the drainage protector according to any one of the first to third aspects, the U-turn guide portion is disposed on one side in the width direction of the fixing spatula portion. A fixed guide portion is provided so as to protrude from the guide wall portion.

  According to this aspect, since the fixing guide part protrudes from the fixing spatula part, the fixing spatula part can be more stably fixed to the wire harness. In addition, since the fixed guide portion is provided on the side connected to the guide wall portion protruding from the inner peripheral edge portion of the harness support plate, even when there is a difference in the diameter dimension of the wire harness, the curvature of the U-turn portion, etc. The wire harness can be held by absorbing the difference in the diameter while keeping the constant. Thereby, even when there is a variation in the diameter dimension of the wire harness, it is possible to easily and stably perform the work of fixing the protector to the wire harness.

  A first aspect of the present invention relating to the draining structure of a wire harness is the draining structure of the wire harness, wherein the draining protector according to any one of the first to fourth aspects is used, and the fixing spatula portion of the draining protector is used. Is fixed to the wire harness, while the wire harness extending from the fixing spatula portion side is placed on the harness support plate of the U-turn guide portion and routed along the guide wall portion, Constitutes a U-turn portion bent in a U-turn shape, and the wire harness further extends from the U-turn guide portion.

  According to this aspect, the U-turn part is fixed to the vehicle by attaching the drainage protector of the present invention to the connector part that is concerned about water entry or the wire harness extending from the insertion hole into the vehicle interior. Without accompanying, the draining structure of the wire harness can be advantageously provided in the vicinity of a part or a part that is likely to be filled with water.

  That is, since the fixing spatula portion of the drainer protector is positioned and fixed to the wire harness, the drainer protector can be fixed and held on the wire harness itself. Further, a U-turn guide part that protrudes in a U-turn shape from one end side of the fixing spatula part is provided, and the wire harness is placed on the harness support plate of the U-turn guide part, and the inner peripheral edge of the harness support plate The U-turn part bent in a U-turn shape can be stably provided in the wire harness only by routing the wire harness along the guide wall part protruding in the U-shaped cross-section from.

  The second aspect of the present invention relating to the draining structure of the wire harness is the draining structure of the wire harness according to the first aspect, wherein the fixing spatula portion of the draining protector is overlapped with the wire harness and bound. The wire harness which is fixed to the wire harness by a tape or a binding band, and the U-turn guide portion of the drainage protector is bent and arranged in a U-turn shape along the U-turn guide portion. On the other hand, it is fixed by a binding tape or a binding band in any region except the lowermost end of the U-turn portion.

  According to this aspect, by fixing the drainage protector to a desired part of the wire harness with the binding tape or the binding band, it is possible to stably configure the drainage structure that is not fixed to the vehicle. In particular, since the drainage protector is fixed to the wire harness with a binding tape or a binding band, the wire harness drainage structure can be obtained simply by attaching the wire harness protector to the wire harness at the stage of wire harness binding. Can be easily constructed at a desired site.

  According to the present invention, since the drainage protector has the fixing spatula portion fixed to the wire harness, the drainage protector can be fixed to the wire harness itself and positioned and held. Moreover, the U-turn guide part which protrudes in a U-turn shape from the one end side of the fixing spatula part is provided, and it protrudes in U-shaped cross-sectional shape from the U-shaped harness support plate and the inner peripheral edge part of a harness support plate. And a guide wall. Thus, the wire harness extending from the fixing spatula side is placed on the harness support plate of the U-turn guide portion and disposed along the guide wall portion, so that the U-turn portion can be stably attached to the wire harness. Can be provided. Moreover, in the vicinity of the waterproof area, the U-turn portion can be configured at a desired position of the wire harness only by attaching the drainage protector of the present invention, and the drainage protector itself needs to be fixed to the vehicle body by positioning and fixing to the wire harness. Sex can be excluded. As a result, even when a mounting hole for fixing the fixing clip cannot be provided in the vicinity of the lower end portion of the U-turn portion, the U-turn portion can be configured in the wire harness, and the U-turn shape is utilized. The draining structure of the wire harness can be provided with excellent versatility. In addition, the guide wall portion of the U-turn guide portion stably holds the wire harness in a U-turn shape that protrudes downward, and does not prevent downward drainage in the U-turn portion of the wire harness. .

The perspective view which shows the drainer protector as one Embodiment of this invention. The front view of FIG. The rear view of FIG. The front view which shows the draining structure of the wire harness using the draining protector of this embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, FIGS. 1 to 3 show a drainage protector 10 as an embodiment of the present invention. The drainage protector 10 protrudes from one end side (the lower end side in FIGS. 1 to 3) of the fixing bellows portion 12 in a substantially vertically long rectangular flat plate shape when viewed from the front and protrudes downward when viewed from the front. And a U-turn guide portion 14 extending substantially in a U-turn shape, and is integrally formed by injection molding or the like with a synthetic resin such as polypropylene (PP) or polyamide (PA). The drainer protector 10 is used by being attached to the wire harness 32 as will be described later. In the following description, “upper” refers to the upper side in FIGS. 1 to 3, “lower” refers to the lower side in FIGS. 1 to 3, and “front” refers to the front direction in FIG. The back direction in 1 shall be said.

  The U-turn guide portion 14 has a generally U-shaped flat plate-like harness support plate 16 that protrudes downward in a front view, and a plate thickness direction extending from the inner peripheral edge portion to the entire inner peripheral edge portion of the harness support plate 16 (FIG. 1). And a guide wall portion 18 that protrudes in a substantially U-shaped cross-section in the middle (front side). Moreover, the harness support plate 16 of the U-turn guide portion 14 has a reinforcing plate portion 20 having a substantially semicircular flat plate shape in a front view connecting the inner peripheral edge portions. That is, the reinforcing plate portion 20 is disposed in the entire space surrounded by the straight line connecting the both end portions of the harness support plate 16 and the inner peripheral edge portion.

  Further, in the harness support plate 16 of the U-turn guide portion 14, the back surface 24 opposite to the front surface 22 from which the guide wall portion 18 protrudes extends on a straight line connecting both ends of the harness support plate 16 and substantially. Reinforcing ribs 26 having a rectangular cross-sectional shape and extending over the entire length of the harness support plate 16 are provided so as to protrude rearward (in the rear direction in FIG. 1).

  Further, one side portion in the width direction of the fixing spatula portion 12 (right side portion in the left-right direction in FIG. 2) is connected to the guide wall portion 18 of the U-turn guide portion 14 and has a substantially rectangular cross-sectional shape (in FIG. 1). A fixed guide portion 28 extending upward is provided so as to protrude forward (in the front direction in FIG. 1). In addition, the upper ends of the fixing spatula portion 12 and the fixing guide portion 28 protrude in a substantially rectangular flat plate shape toward the rear (back in FIG. 1) and inward (right in FIG. 2), respectively. A tape retaining protrusion 30 having a substantially L shape in plan view is provided.

  Next, the front view for demonstrating the draining structure of the wire harness 32 using the draining protector 10 made into such a structure in FIG. 4 is shown. In FIG. 4, binding tapes 40 and 46 described later are indicated by virtual lines for easy understanding. As shown in FIG. 4, in the draining structure of the wire harness 32, the wire harness 32 in which a bundle of a plurality (six in this embodiment) of electric wires 34 is bound and fixed by a binding tape 36 is provided inside the vehicle. It is arranged from a waterproof area (not shown) such as an engine room to the control unit 38 in the vehicle interior, and the drainage protector 10 of this embodiment is attached to the wire harness 32.

  More specifically, the fixing tape 12 of the drainage protector 10 of the present embodiment is arranged facing upward, and the binding tape is overlaid on the surface 22 of the fixing blade 12 with the wire harness 32 superimposed thereon. The fixing spatula portion 12 is bound and fixed to the wire harness 32 by 40. The binding tape 40 is prevented from coming off from the fixing spatula portion 12 by the tape retaining protrusion 30 and the reinforcing rib 26 formed on the drainage protector 10. The wire harness 32 that is bound and fixed to the fixing spatula portion 12 further extends downward from the fixing spatula portion 12 side and is placed on the surface 22 of the harness support plate 16 of the U-turn guide portion 14. And routed along the outer peripheral surface of the guide wall 18. The portion of the wire harness 32 constitutes a substantially U-shaped U-turn portion 42 in a front view bent in a U-turn shape. Then, the U-turn guide portion 14 is curved in a U-turn shape along the U-turn guide portion 14, and the lower end 44 of the U-turn portion 42 is excluded from the U-turn portion 42 of the wire harness 32. This area is fixed by a binding tape 46. Note that the binding tape 36 is not wound around the bundle of the plurality of electric wires 34 constituting the wire harness 32 at the lowermost end 44 of the U-turn portion 42, and the drainage downward in the U-turn portion 42 is smoothly performed. To be done. Further, the wire harness 32 fixed to the U-turn guide portion 14 is further extended upward from the U-turn guide portion 14 side. More specifically, in the region 48 of the wire harness 32, the plurality of electric wires 34 are exposed without the binding tape 36 being wound. Since the exposed plurality of electric wires 34 can be bent easily, the electric wires 34 are bent in a substantially L shape and connected to a connector 50 provided at the end of the wire harness 32. The connector housing 52 constituting the connector 50 is accommodated in the connector accommodating portion 54 provided in the control unit 38, whereby the wire harness 32 is connected to the control unit 38 via the connector 50. .

  According to the drainage protector 10 having such a structure, since the drainage protector 10 has the fixing spatula portion 12 fixed to the wire harness 32, the drainage protector 10 is fixed to the wire harness 32. Therefore, positioning and holding can be performed easily and reliably. Further, the drainage protector 10 includes a U-turn guide portion 14 extending in a substantially U-turn shape that protrudes downward from the lower end side of the fixing spatula portion 12. The U-turn guide portion 14 has a substantially U-shaped flat plate-like harness support plate 16 and a guide protruding in a substantially U-shaped cross section in the plate thickness direction from the inner peripheral edge of the harness support plate 16 to the entire length of the inner peripheral edge. And wall 18. Therefore, it extends downward from the fixing spatula portion 12 side and is placed on the surface 22 of the harness support plate 16 of the U-turn guide portion 14 and is routed along the outer peripheral surface of the guide wall portion 18. As a result, the U-turn portion 42 having a substantially U-shape bent in a U-turn shape can be stably provided in the wire harness 32.

  From the above, the wire harness 32 extending from the waterproof area where there is a concern about water entry in the engine room or the like in the vehicle, for example, in the vicinity of the connection portion with the electric device such as the control unit 38 in the vehicle interior. By simply attaching the drainage protector 10, the drainage protector 10 itself can be positioned and fixed to the wire harness 32 while forming the U-turn portion 42 in the wire harness 32. Therefore, since there is no need to provide a mounting hole for fixing the fixing clip near the lower end of the U-turn portion as in the prior art, the U-turn shape like the U-turn portion 42 of the present embodiment is used. Thus, the draining structure of the wire harness 32 can be provided with excellent versatility.

  In addition, the U-turn guide portion 14 is provided with a guide wall portion 18 that protrudes in a substantially U-shaped cross section in the plate thickness direction from the inner peripheral edge portion of the harness support plate 16 to the entire length of the inner peripheral edge portion. Accordingly, the drainage of the U-turn portion 42 of the wire harness 32 is not prevented from being drained while the wire harness 32 is stably held in a U-turn shape that protrudes downward. In addition, since the fixing spatula portion 12 is also provided with the fixing guide portion 28 that is connected to the guide wall portion 18 and extends upward, the fixing spatula portion 12 is more stable with respect to the wire harness 32. Can be fixed. In other words, even when the wire harness 32 has a large number of diameters, the difference in diameter can be absorbed and the wire harness 32 can be easily and stably held. .

  Further, in the drainer protector 10 of the present embodiment, the harness support plate 16 has the reinforcing plate portion 20 having a substantially semicircular plate shape in front view connecting the inner peripheral edge portions, and the harness support plate 16 on the back surface 24. Since the reinforcing rib 26 that extends over the entire length of the straight line connecting both ends of the wire is projected, the rigidity of the harness support plate 16 and the U-turn guide portion 14 is ensured, and the wire harness 32 is turned into the U-turn. It can be held stably in a shape.

  Furthermore, the water drainage structure without fixing to the vehicle can be stably configured only by binding and fixing the water drainage protector 10 to a desired part of the wire harness 32 using the binding tapes 40 and 46. In addition, since the drainage protector 10 is fixed to the wire harness 32 by the bundling tapes 40 and 46, the drainage protector 10 can be attached to the wire harness 32 in the bundling work of the wire harness 32, and more easily. The drainer protector 10 can be fixed to the wire harness 32.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the above embodiment, the fixing spatula portion 12 of the drainage protector 10 is bound and fixed by the binding tape 40 in a state where the wire harness 32 is overlapped, but may be fixed by binding with a binding band or the like. . In the above embodiment, the U-turn guide portion 14 of the drainer protector 10 is bound and fixed by the binding tape 46 in the region excluding the lowermost end 44 of the U-turn portion 42, but is fixed and bound by a binding band or the like. May be. In addition, in the said embodiment, although the reinforcement board part 20 was formed in the whole region of the space enclosed by the straight line and inner peripheral part which connect the both ends of the harness support board 16, both ends of the harness support board 16 May be formed by a part of a space surrounded by a straight line connecting the two and the inner peripheral edge. Moreover, in the said embodiment, although the reinforcement board part 20, the fixed guide part 28, the reinforcement rib 26, and the tape removal prevention protrusion 30 were provided, it is not necessarily required.

10: Drainage protector, 12: Bella portion for fixing, 14: U-turn guide portion, 16: Harness support plate, 18: Guide wall portion, 20: Reinforcement plate portion, 24: Back surface (opposite surface), 26: Reinforcement Rib, 28: Fixed guide part, 32: Wire harness, 40: Binding tape, 42: U-turn part, 44: Bottom end, 46: Binding tape

Claims (6)

A drainer protector attached to the wire harness,
A fixing spatula portion fixed to the wire harness;
A U-turn guide part protruding from one end side of the fixing spatula part and extending in a U-turn shape,
The U-turn guide portion has a U-shaped harness support plate on which the wire harness is placed, and a guide wall portion that protrudes in the thickness direction from the inner peripheral edge of the harness support plate in a U-shaped cross-sectional shape. A drainer protector characterized by   The drainage protector of Claim 1 with which the said harness support plate of the said U-turn guide part has the reinforcement board part which connects between the said inner peripheral edge parts.   Reinforcing ribs that extend and extend in a straight line connecting both ends of the harness support plate are provided on the surface of the U-turn guide portion on the opposite side of the surface of the harness support plate from which the guide wall portion protrudes. The drainage protector according to claim 1 or 2.   The fixed guide part which is connected to the guide wall part of the U-turn guide part and extends is provided on one side part in the width direction of the fixing spatula part. The drainer protector described in 1. In the draining structure of the wire harness,
Using the drainer protector according to any one of claims 1 to 4,
While fixing the ladle portion for fixing the drainer protector to the wire harness,
A U-turn in which the wire harness extending from the fixing spatula portion side is placed on a harness support plate of a U-turn guide portion and routed along the guide wall portion, and the wire harness is bent in a U-turn shape. As well as
The wire harness draining structure, wherein the wire harness further extends from the U-turn guide portion.   The fixing spatula part of the drainer protector is superimposed on the wire harness and fixed to the wire harness by a binding tape or a binding band, while the U-turn guide part of the drainer protector is The wire harness that is bent and arranged in a U-turn shape along the turn guide portion is fixed by a binding tape or a binding band in any region except the lowermost end of the U-turn portion. Item 6. A wiring harness draining structure according to Item 5.

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