JP5924240B2 - Protector for wire harness - Google Patents

Description

  The present invention relates to a protector for a wire harness, and more particularly to a protector that inserts and protects a wire harness that is routed in an automobile, and a corrugated tube that is externally attached to the wire harness that is inserted into the entrance or / and the exit of the protector is securely installed. It can be positioned and held.

  A corrugated tube is widely used as an exterior material that focuses and protects a group of wires in a wire harness that is routed in an automobile. A wire harness is inserted through a protector made of a resin molded product in order to protect against restrictions and sharp external interference materials. Therefore, the corrugated tube and the protector may be connected by inserting the end portion of the corrugated tube sheathed on the wire harness into the inlet or the outlet of the protector.

  As a protector continuous with this type of corrugated tube, the present applicant provides a protector 100 shown in FIGS. 9A and 9B in Japanese Patent Laid-Open No. 2012-5217 (Patent Document 1). The protector 100 is configured to cover the protector body 101 with a lid 102, and provided with locking ribs 110 for corrugated tubes on the inner surfaces of the bottom wall and both side walls adjacent to the tip opening 105 serving as the entrance / exit of the protector body 101, and A locking rib 120 is also provided on the inner surface of the lid 102. The locking ribs 110 and 120 are fitted into the valley portion 201 of the corrugated tube 200 that is externally mounted on the wire harness, and the protruding end surfaces 110 s and 120 s have a continuous arc shape in contact with the outer peripheral surface of the valley portion 201.

  The end of the corrugated tube 200 sheathed on the wire harness is inserted from the front end opening 105 of the protector main body 101 of the protector 100, and the locking rib 110 is inserted and locked to the lower outer peripheral surface of the trough 201 of the corrugated tube 200. In this state, the lid 102 is covered, and the locking rib 120 of the lid 102 is inserted and locked to the upper outer peripheral surface of the valley 201. As described above, when the locking ribs 110 and 120 are inserted and locked into the valley 201 of the corrugated tube 200 from above and below, the crest 202 adjacent to the valley 201 into which the locking ribs 110 and 120 are inserted becomes the locking rib 110, 120. 120 is prevented from moving in the axial direction, and the corrugated tube 200 can be positioned and held in the protector.

JP2012-5217A

  As shown in FIGS. 10 (A) and 10 (B), the corrugated tube 200 to be sheathed on the wire harness is normally a “corrugated tube with splits” provided with a slit 210 continuous in the length direction, and the slit 210 is opened. The wire harness W / H can be laterally inserted. If the slit 210 is thus provided and can be inserted horizontally, it is not necessary to insert the wire harness from one end opening in the length direction into the corrugated tube without the slit and to pull out the wire harness from the other end opening. There is an advantage that the workability of attaching the corrugated tube to the harness is improved.

  However, when the slit 210 is provided in the corrugated tube 200, as shown in FIG. 11A, one end side 211 divided by the slit 210 enters and overlaps the inner surface of the other end side 212, and the corrugated tube 200 is reduced in diameter. The outer diameter of the peak portion 202 of the corrugated tube 200 is also reduced. In this case, as shown in FIG. 11B, the peak portion 202 is not locked by the locking rib 110 provided on the protector 100, and the corrugated tube 200 is not positioned and held in the protector 100, and can move. As shown in FIG. 11C, the protector 100 may come off the tip opening.

  In particular, the corrugated tube connected to the protector mounted on the engine of the automobile has a possibility that the portion sandwiching the slit of the corrugated tube overlaps and becomes smaller in diameter due to engine vibration during traveling, and may come out of the protector.

  The present invention has been made in view of the above problems, and when the end portion of a corrugated tube with a slit sheathed on a wire harness is inserted and connected to the opening of the protector, the corrugated tube is prevented from being detached from the protector. Is an issue.

In order to solve the above-described problems, the present invention provides a wire harness in which a wire harness sheathed with a corrugated tube with a slit is inserted from an inlet provided in the protector, and is pulled out from the tip of the corrugated tube with a slit inside the protector. Is a protector for a wire harness in which the branch lines are respectively drawn from a plurality of outlets of the protector.
Along the peripheral wall end surface surrounding said inlet Ru provided in the peripheral wall of the protector body, with locking ribs for corrugated tube are protruded, is divided part of the locking rib, the wall end faces of該分cross section slit insertion projections are projected,
The slit insertion protrusion includes a flat plate portion protruding toward the inner side of the opening, and an upper plate portion protruding in an orthogonal direction at a protruding end of the flat plate portion, and a rear end of the flat plate portion and a rear portion of the upper plate portion. A positioning plate continuous to the end, and the protruding amount of the slit insertion protrusion is larger than the protruding amount of the locking rib;
The corrugated tube with a slit which is exterior to said passage inlet wire harness of the protector body, the tip with is butted against the positioning plate, split ends sandwiching the slit is in contact with the both sides of the slit insertion projection, and provides a protector for a wire harness, characterized in that the locking ribs on the valley of the corrugated tube is structured to be inserted.

  As described above, when the slit insertion protrusion provided on the protector is inserted into the slit of the corrugated tube, the split ends on both sides sandwiching the slit come into contact with the slit insertion protrusion, and one split end enters the inner surface of the other split end. Therefore, the corrugated tube can be prevented from being reduced in diameter. Therefore, by reducing the diameter of the corrugated tube, it is possible to prevent the corrugated tube from being released from the locking rib provided on the protector and unlocked, and the corrugated tube can be prevented from moving and coming out of the opening of the protector.

The protector of the present invention comprises a protector body and a lid that closes the upper surface opening of the protector body,
The opening for inserting the wire harness is provided by combining the opening cut into the U shape from the upper end on the side wall of the protector body and the opening provided on the side wall of the lid,
It is preferable that the slit insertion protrusion projects from the center of the bottom of the opening of the protector body.

The slit insertion protrusion includes a flat plate portion that protrudes inward of the opening, and an upper plate portion that protrudes in the orthogonal direction to the protruding end of the flat plate portion and has a T shape with the flat plate portion .
If it is said T shape, even if the both-side division | segmentation end which pinches | interposes the slit of a corrugated tube deform | transforms inward, it can contact | abut with the said upper board part, and it can prevent that a slit insertion protrusion remove | deviates from a slit.

The slit insertion protrusion protrudes from the entire length in the thickness direction of the peripheral wall end surface surrounding the opening, and is opposed to the divided end surfaces of the plurality of locking ribs protruding in parallel in the thickness direction from the peripheral wall end surface. Yes.
Thereby, the both-sides division | segmentation end which pinches | interposes the slit of the some peak part and trough part of the insertion end part of the corrugated tube latched with the latching rib of a protector can be made to contact with the said slit insertion protrusion.

As described above, the protector of the present invention, the inner end of the flat plate portion of the slit insertion projection and provided with a positioning plate that is continuous with the rear end of the upper plate portion, of the corrugated tube with a fitted on the wire harness to the positioning plate It is to abut against the tip.

The protector body is a rectangular box having an upper surface opening, and as described above, the inlet comprising the opening for inserting the wire harness is provided on one side wall, and a plurality of outlets for the wire harness are provided on the other side wall. branched wire harness inside out off from the plurality of outlets is provided with the locking rib and the slit insertion projection into the inlet.

  Since the corrugated tube with a slit is sheathed on the wire harness inserted into the entrance of the protector, the locking rib and the slit insertion projection are provided at the entrance. When the corrugated tube is not sheathed on the wire harness drawn out from the plurality of outlets, it is not necessary to provide the locking ribs and slit insertion protrusions for the corrugated tube with slits at the outlet.

The protector of the present invention can also be applied to a case where the protector body has a bowl shape, one opening in the length direction is an inlet for inserting a wire harness, and a plurality of openings on the other end are outlets . the locking rib and the slit insertion protrusion a corrugated tube with a slit in the opening out you are exterior to extending the wire harness outward may be provided from the outlet. Furthermore, as described above, the present invention can be applied to a case where the protector main body has a bowl shape, does not have a lid, and the wire harness is held in the protector main body by tape winding in a state where the wire harness is inserted through the protector main body.

  The protector of the present invention is attached to the outer surface side of an engine mounted on an automobile, and the corrugated tube with slits is externally provided in a region where a wire harness routed along a panel surrounding the engine is extended from the panel to the engine. It is particularly suitable for use.

  When a protector is attached to the outer surface side of an engine mounted on an automobile, the protector vibrates due to engine vibration during traveling, and the corrugated tube connected to the protector is easily detached from the protector due to deformation due to vibration. Therefore, in order to prevent this corrugated tube from coming off from the protector, the protector of the present invention is preferably used.

  In the protector of the present invention, the slit insertion protrusion protruding from the opening edge of the protector is inserted into the slit of the corrugated tube at the position where the end portion of the corrugated tube with the slit to be sheathed on the wire harness is inserted into the opening of the protector. It is possible to reliably prevent the corrugated tube from being reduced in diameter by the split end surfaces sandwiched between contacting both side surfaces of the slit insertion protrusion, and one of the split portions entering and overlapping the other inner surface. Therefore, it is possible to prevent the corrugated tube from coming off from the locking rib provided on the periphery of the opening by reducing the diameter of the corrugated tube and detaching the corrugated tube from the protector.

(A) is a schematic plan view which shows the mounting location of the protector of embodiment of this invention, (B) is a front view of the corrugated tube connected with the said protector, (C) is sectional drawing of (B). It is a perspective view of the protector of a 1st reference embodiment . (A) is an exploded side view before covering the main body of the protector shown in FIG. 2, and (B) is a side view of the protector in a state where the main body is covered with the cover. (A) is a principal part expansion perspective view of the protector shown in FIG. 2 , (B) is an arrow view of (A). FIG. 2 shows a state in which the corrugated tube with the wire harness mounted is connected to the protector shown in FIG. Explanatory drawing of the state contact | abutted to protrusion, (C) is drawing which shows the state which inserted the edge part of the corrugated tube in the inlet_port | entrance of a protector main body, and is latching with the latching rib and slit insertion protrusion. The connection part of the protector and corrugated tube shown in FIG. 2 is shown, (A) is a side view, (B) is sectional drawing. Shows a second referential embodiment, (A) is a side view of the protector body, (B) is a perspective view. Shows a main portion of the protector of the implementation form of the present invention is (A) is diagram showing a perspective view of a slit insertion protrusion, the (B) is kept in contact with the slit split end surface of the corrugated tube into the slit insertion projection. (A) (B) is drawing which shows a prior art example. (A) and (B) are drawings which show a corrugated tube with a slit. (A)-(C) are drawings explaining the conventional problem.

Hereinafter, embodiments of a protector of the present invention will be described with reference to the drawings.
It shows a mounting portion of the flop protector of the present invention in FIG.
As schematically shown in FIG. 1 (A), the protector 1 of the present invention is mounted on an upper surface of an engine E of an automobile, and after being routed along a panel P surrounding an engine room R, the panel P and the engine are arranged. The wire harness 2 routed across the space between the wire E and the wire harness 2 is inserted, and the wire harness 2 has a slit corrugated tube 3 shown in FIGS. The exterior.

  The corrugated tube 3 is a corrugated tube with a resin slit that is generally used as in FIG. In other words, annular crests 4 and troughs 5 are provided alternately in the axial direction, have one slit 6 that extends the entire length in the axial direction, and opens between the divided end faces 7 and 8 sandwiching the slit 6. The wire harness 2 is inserted.

Protector 1 Ru protector der for branching to protect the branch portion of the wire harness 2. The protector of the first reference embodiment shown in FIG. 2 to FIG. 6 includes a box-shaped protector body 10 having an upper surface opening and a separate lid 11 as shown in FIG. It is a resin molded product. A lock frame 18 is provided on the side wall of the protector body 10, and a lock claw 19 that locks and connects to the lock frame 18 protrudes from the periphery of the lid 11.

  An end portion of the corrugated tube 3 that is provided on the wire harness 2 that is provided from the upper end of the peripheral wall 10a on one side of the protector body 10 and that is provided with an opening 13 for inserting a wire harness that is cut into a U shape and is routed from the panel P. Are inserted into the inlet 13 for connection. The lid 11 is provided with an arc-shaped inlet 14 on the side wall 11a of the portion facing the upper side of the inlet 13, and the protector body 10 is closed by covering the lid 11, and the inlets 13 and 14 are combined to form a substantially circular shape. An inlet 15 is formed.

  The U-shaped peripheral wall end face 20 surrounding the inlet 13 of the protector body 10 is provided with three locking ribs 21 (21A, 21B, 21C) spaced in the thickness direction. The pitch of these three locking ribs 21 matches the pitch of the valleys 5 of the corrugated tube 3, and locking spaces 22 (22A and 22B) are provided between the locking ribs 21A and 21B and between 21B and 21C, respectively. ing. The dimensions are set such that the peaks 4 and 4 on the distal end side of the corrugated tube 3 are inserted and locked in the locking spaces 22A and 22B, respectively.

  The locking rib 21 surrounding the inlet 13 in an arc shape is not provided at the center of the bottom surface of the U-shaped inlet 13, and the U-shaped continuation of the three locking ribs 21 and the two locking spaces therebetween is not provided. The slit insertion protrusion 25 extends in the thickness direction of the peripheral wall end surface 20 from the center of the bottom surface of the dividing portion and projects toward the inside of the inlet 13. The protruding amount of the slit insertion protrusion 25 is higher than that of the locking rib 21. In addition, the slit insertion protrusion 25 is formed in a substantially T shape by providing a wide upper plate portion 25 b protruding in the orthogonal direction at the protruding end of the flat plate portion 25 a extending in the thickness direction of the peripheral wall end surface 20.

  On the end face of the inlet 14 provided in the lid 11, three locking ribs 26 that continue to the locking rib 21 of the inlet 13 are provided in a projecting manner with the protector body 10 closed.

  The protector 1 branches the electric wire group of the wire harness 2 pulled out from the corrugated tube 3 in the protector body 10 into three branch lines 2-1, 2-2, 2-3, and one branch line 2-1 is connected. Pull out from the outlet 12-1 provided on the side wall of the other side of the protector body 10, pull out the branch line 2-2 from the outlet 12-2 provided on the side wall of the other side of the protector body 10, and further branch line 2- 3 is pulled out from an outlet 12-3 provided in the lid 11. The branch lines 2-1 to 2-3 of the wire harness drawn out from the three outlets 12-1 to 12-3 are not covered with a corrugated tube, and are converged and protected by tape winding. Tape winding pieces 27, 28, and 29 protrude from the portion surrounding -3.

Next, a connection method between the protector 1 and the corrugated tube 3 sheathed on the wire harness 2 will be described.
As shown in FIG. 5A, the corrugated tube 3 to be inserted into the inlet 13 of the protector body 10 has the slit 6 positioned on the lower side, and the end of the corrugated tube 3 is inserted from the inlet 13. At the insertion portion, as shown in FIGS. 5B and 5C, the slit 6 is opened, and the divided end surfaces 7 and 8 sandwiching the slit 6 are brought into contact with both side surfaces of the flat plate portion 25 a of the slit insertion protrusion 25. In addition, the locking rib 21 is inserted and locked into the trough 5 at the insertion end of the corrugated tube 3, and the peak 4 is inserted into the locking space 22.

  Then, inside the protector body 10, the wire group of the wire harness 2 drawn from the tip of the corrugated tube 3 is branched into branch lines 2-1, 2-2, 2-3, and as shown in FIG. Pull out from outlets 12-1 to 12-3. At that time, the outlet 12-3 is pulled out when the lid 11 is closed. In this way, after the branch line is drawn out, the lid 11 is put on, and the protector body 10 is locked. When the lid 11 is covered, the locking rib 26 provided at the inlet 14 is inserted and locked into the trough 5 on the upper surface side of the corrugated tube 3.

  As described above, the corrugated tube 3 is positioned by inserting and locking the locking ribs 21 and 26 into the trough 5 at the end of the corrugated tube 3 inserted into the inlet 15 of the protector 1. Further, the divided end surfaces 7 and 8 of the slit 6 are in contact with both surfaces of the slit insertion protrusion 25, and one of the divided end surfaces 7 and 8 does not enter and overlap the other inner surface. Therefore, the corrugated tube 3 is not reduced in diameter, and it is possible to reliably prevent the corrugated tube 3 from moving out of the protector 1 due to the disengagement of the peak portion 4 by the locking rib 21 and the corrugated tube 3 moving. Further, since the upper plate portion 25b protrudes from the tip of the flat plate portion 25a of the slit insertion protrusion 25, even if the divided end surfaces 7 and 8 are bent inward, the upper plate portion 25b is brought into contact with the upper plate portion 25b. It is possible to prevent the slit insertion protrusion 25 from coming off from the slit 6 beyond

  In this way, the slit insertion protrusion 25 to be inserted into the slit 6 of the corrugated tube 3 is provided at the inlet for inserting the corrugated tube 3, and the divided end surfaces 7 and 8 sandwiching the slit 6 are brought into contact with both surfaces of the slit insertion protrusion 25. Thus, it can be prevented that one of the divided end faces sandwiching the slit enters the other inner surface and the corrugated tube 3 is reduced in diameter and detached from the locking rib 21 of the protector 1. Therefore, the connection between the protector 1 and the corrugated tube 3 is released, and the corrugated tube 3 is removed from the protector 1 so that the electric wire of the wire harness 2 can be prevented from being exposed to the outside at that portion.

7A and 7B show a second reference embodiment.
The protector body 10-1 has a bowl shape, and the opening for inserting the wire harness at both ends in the length direction has one side as an inlet 15-A and the other as an outlet 15-B, and the slit insertion protrusion 25-1 has a T shape. In addition, the upper plate provided at the protruding end is eliminated.
The slit insertion protrusion 25-1 has a shape in which the upper plate portion is eliminated, but one of the divided end surfaces 7 and 8 is brought into contact with both side surfaces of the slit insertion protrusion 25-1 by contacting the divided end faces of the slit 6 of the corrugated tube 3 with each other. Prevents the corrugated tube from coming out of the protector.

Figure shows the implementation form of the protector of the present invention in 8 (A) (B).
The slit insertion protrusion 25-2 provided in this embodiment is provided with a wide positioning plate portion 25c at the inner end of the flat plate portion 25a.
In the step of inserting the corrugated tube 3 into the protector, when the tip of the corrugated tube 3 hits the positioning plate portion 25c, the insertion dimension of the corrugated tube 3 is automatically determined. The locking rib 21 can be accurately inserted into the 5 and workability is improved. Moreover, the movement of the corrugated tube 3 in the length direction can be prevented by the positioning plate portion 25c. Other shapes including the entire shape of the protector are the same as those of the protector of the first reference embodiment, and the description thereof is omitted because it has the same function and effect .

  Note that the present invention is not limited to the wire harness routed to the automobile of the above-described embodiment, and can be suitably used without being limited in application as long as it is a protector connected to a corrugated tube that is externally mounted on the wire harness.

DESCRIPTION OF SYMBOLS 1 Protector 2 Wire harness 3 Corrugated tube 4 Peak part 5 Valley part 6 Slit 7, 8 Split end surface 10 Protector main body 11 Lid 13 Inlet 21 Locking rib 25 Slit insertion protrusion

Claims (4)

A wire harness sheathed with a corrugated tube with a slit is inserted from an entrance provided in the protector, and the wire harness drawn out from the tip of the corrugated tube with a slit inside the protector is branched into a plurality of branch lines, and the protector A protector for a wire harness in which the branch lines are drawn out from a plurality of outlets, respectively,
Along the peripheral wall end surface surrounding said inlet Ru provided in the peripheral wall of the protector body, with locking ribs for corrugated tube are protruded, is divided part of the locking rib, the wall end faces of該分cross section slit insertion projections are projected,
The slit insertion protrusion includes a flat plate portion protruding toward the inner side of the opening, and an upper plate portion protruding in an orthogonal direction at a protruding end of the flat plate portion, and a rear end of the flat plate portion and a rear portion of the upper plate portion. A positioning plate continuous to the end, and the protruding amount of the slit insertion protrusion is larger than the protruding amount of the locking rib;
The corrugated tube with a slit which is exterior to said passage inlet wire harness of the protector body, the tip with is butted against the positioning plate, split ends sandwiching the slit is in contact with the both sides of the slit insertion projection, and protector for a wire harness, characterized in that the locking ribs are configured to be inserted into valleys of the corrugated tube. The protector body, and a lid that closes the upper surface opening of the protector body,
Wherein it is from the top to the peripheral wall of the protector body and cut write Mareta the inlet to the U-shaped, with an opening for the wire harness insertion in combination with the input mouth in the side wall of the lid,
The protector said inlet at the bottom from the center of claim 1, wherein the slit insertion projection is projected protector for a wire harness main body. The slit insertion protrusion protrudes from the entire length in the thickness direction of the peripheral wall end surface surrounding the inlet, and faces the divided end surfaces of the plurality of locking ribs protruding in parallel in the thickness direction from the peripheral wall end surface. protector for a wire harness according to claim 1 or claim 2 are. The protector for a wire harness according to any one of claims 1 to 3, wherein the protector is attached to an outer surface side of an engine mounted on an automobile .

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