JP2014220866A - Temporary fixing structure for wire harness onto vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary fixing structure for a wire harness onto a vehicle body in which a fixed part does not need to be changed and in which a protector can be temporary fixed in a low cost when a plurality of fixing parts in a same direction with an attachment face of the fixed part cannot be ensured in the fixing structure.SOLUTION: A temporary fixing structure for a wire harness onto a vehicle body comprises: an attachment face 43 intersecting with a vertical line and arranged in a lower face side of a body panel 41; a stud bolt 51 vertically arranged on a fixing face 44 of a body panel 41 intersecting with an attachment face 43; a protector 11 having a cylindrical part 13 into which a wire harness wired along with the body panel 41 can be inserted; a fixing flange 29 provided on the cylindrical part 13 at its middle point in a longitudinal direction, and formed so that front/rear faces of a fixing part 47 extend in an intersecting direction with the attachment face 43 on attachment onto a vehicle; and a bolt insertion hole 53 provided on the fixing part 47 to be inserted with the stud bolt 51, and notched in a u-shape opening in an edge on the opposing side against the attachment face 43.

Description

  The present invention relates to a vehicle body temporary fixing structure of a wire harness.

  A large number of wire harnesses for connecting various electrical components are routed in an automobile, and the wire harnesses may be assembled using a protector for protecting a required part of the vehicle body panel. Among them, for example, a protector is disclosed as one that secures a wire harness at a predetermined position on a wiring path and protects the wire harness (see Patent Document 1). This type of protector includes a cylindrical portion through which a wire harness can be inserted and a vehicle body fixing portion in which a bolt hole is drilled. The vehicle body fixing portion is integrally formed with the cylindrical portion, and many of them are made of resin. The cylindrical part which inserts a wire harness is comprised by the case of a cross-sectional concave shape, and the lid | cover which closes opening of this case.

  When wiring the wire harness to various parts of the vehicle body using the protector, the worker first inserts the wire harness into the cylindrical portion and then starts the work of assembling the protector to the required part of the vehicle body panel. Assembly of the protector to the vehicle body panel is performed by an operator inserting a bolt hole of the vehicle body fixing portion into a fixing bolt protruding from the vehicle body panel and tightening with a nut.

  By the way, when the protector is attached to a fixing bolt erected on the vehicle body panel on the lower surface of the vehicle body, the bolt hole of the vehicle body fixing portion is inserted into the fixing bolt and then fixed by an upward operation. In this upward work, it is necessary to temporarily fix the nut while holding the protector with one hand so that the protector does not fall, and then perform final tightening, which results in poor workability and great fatigue of the hands and arms.

Here, as shown in FIG. 6, the protector 503 attached to the body panel 501 that is a fixed portion is provided with a vehicle bracket fixing portion 505, a vehicle bolt fixing portion (fixing portion) 507, and a vehicle clip fixing portion 509. Suppose that The vehicle bolt fixing portion 507 and the vehicle clip fixing portion 509 are attached from the same direction to the attachment surface 511 of the body panel 501 having substantially the same planar shape. The mounting surface 511 of the body panel 501 is the lower surface side of the body panel 501 that intersects the vertical line (the direction of gravity).
In this case, as shown in FIG. 7, a protector that passes the drop direction G acting on the protector 503 along the mounting surface 511 of the body panel 501 and the bolt hole of the vehicle bracket fixing portion 505 through the stud bolt (mounting bolt) 513. The mounting direction T of 503 is opposite to each other in parallel.

  Therefore, the vehicle bolt fixing portion 507 and the vehicle clip fixing portion 509 are disposed on substantially the same plane. Further, the mounting directions of the vehicle bolt fixing portion 507 and the vehicle clip fixing portion 509 with respect to the mounting surface 511 are the same direction. Therefore, by securing the clip strength used for the vehicle clip fixing portion 509, the protector 503 can be easily temporarily fixed to the body panel 501, and the operator can release both hands from the protector 503 during assembly work. it can. Thereafter, a nut final tightening step can be performed on the stud bolt 513 inserted through the vehicle bolt fixing portion 507, and the burden on the upward work can be reduced.

JP 2007-267470 A

  However, in the body panel 501 in which the wire harness is routed, in the case of a narrow portion, the mounting direction of the vehicle bolt fixing portion 507 and the vehicle clip fixing portion 509 described above is the same direction as the mounting surface 511 of the body panel 501. May not be set to be In such a case, when trying to temporarily fix the vehicle clip fixing portion 509 as in the conventional case, the shape of the body panel 501 is changed to set a new fixed portion for the vehicle clip fixing portion 509. Such a change is necessary.

  The present invention has been made in view of the above situation, and its purpose is to change the fixed part even when a plurality of fixed parts in the same direction with respect to the mounting surface of the fixed part cannot be secured. An object of the present invention is to provide a vehicle body temporary fixing structure for a wire harness capable of temporarily fixing a protector at low cost.

The above object of the present invention is achieved by the following configuration.
(1) A mounting surface that intersects the vertical line and is disposed on the lower surface side of the fixed portion; a mounting bolt that is suspended from the fixing surface of the fixed portion that intersects the mounting surface; A protector having a cylindrical portion that allows a wire harness routed therethrough to be inserted therein, and a direction in which the front and back surfaces of the fixed portion intersect the mounting surface when the vehicle body is mounted. A fixed flange portion formed so as to extend, and a U-shaped notch formed in the fixed portion for inserting the mounting bolt and having an open end facing the mounting surface. A vehicle body temporary fixing structure of a wire harness comprising: a bolt insertion hole.

  According to the vehicle body temporary fixing structure of the wire harness having the configuration of (1) above, the mounting bolt suspended on the fixing surface that intersects the mounting surface of the fixed portion is notched in the fixing portion of the fixing flange portion. When the bolt insertion hole is passed, the two inner peripheral contact portions on the inner peripheral surface of the bolt insertion hole are supported in contact with the two outer peripheral contact portions at both diametrical ends of the mounting bolt. A mounting bolt receives the force (shearing force) of the direction opposite to the direction which cross | intersects an axis line from the two inner peripheral contact parts in a bolt insertion hole. Therefore, the fixing portion of the fixing flange portion is restricted from being detached from the mounting bolt by friction generated by this shearing force. At this time, in the protector, a falling force in a direction intersecting the bolt insertion hole acts on the upper end side in the longitudinal direction, and thus a rotational moment is generated around the mounting bolt, but the lower end side in the longitudinal direction of the protector is at the fixed portion. The rotation is restricted by contacting the mounting surface. As a result, the protector is supported at three points, that is, at least two outer peripheral contact portions of the mounting bolt and the mounting surface of the fixed portion that contacts the lower end in the longitudinal direction of the protector to prevent the protector from falling. Temporary fixing to the fixing part is possible.

(2) The vehicle body temporary fixing structure of the wire harness having the configuration of (1) above, wherein a U-shaped metal collar is fixed to an inner peripheral surface of the bolt insertion hole. Temporary fixing structure for wire harness body.

  According to the vehicle body temporary fixing structure of the wire harness having the configuration of (2) above, the metal collar is fixed to the inner peripheral surface of the bolt insertion hole to which substantially the entire weight of the protector accommodating the wire harness is applied during temporary fixing. . Therefore, even when the load by the wire harness is large, it is possible to prevent the bolt insertion hole of the fixing flange portion made of synthetic resin from being damaged, and it is possible to increase the temporary fixing strength.

  According to the vehicle body temporary fixing structure of the wire harness according to the present invention, even when a plurality of fixing portions that are in the same direction with respect to the mounting surface of the fixing portion cannot be secured, the fixing portion is not changed and is inexpensive. The protector can be temporarily fixed.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

It is a top view of the protector to which the vehicle body temporary fixing structure of the wire harness which concerns on one Embodiment of this invention is applied. FIG. 2 is an enlarged view of the vicinity of a fixed flange portion shown in FIG. 1. It is a perspective view explaining the assembly | attachment direction of the protector shown in FIG. It is a principal part perspective view of the protector temporarily fixed to the attachment surface of the to-be-fixed part. It is a principal part enlarged view of the protector shown in FIG. It is a top view of the conventional protector. It is a perspective view explaining the fall direction and assembly | attachment direction in the conventional protector.

Embodiments according to the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, a protector 11 made of a synthetic resin for protecting a wire harness (not shown) is used in the body fixing structure for a wire harness according to an embodiment of the present invention.

The protector 11 according to the present embodiment includes a case 14 having a concave cross section and a lid 15 that form a long cylindrical portion 13 that can be combined with each other to accommodate a wire harness. In the cylindrical portion 13, the opening of the case 14 through which the wire harness can be inserted is closed by the lid 15.
The case 14 includes a first side portion 17 and a second side portion 19 that face each other with the wire harness interposed therebetween. The 1st side part 17 and the 2nd side part 19 stand up from the both sides of the baseplate part 21 in alignment with a wire harness. That is, the case 14 has a U-shaped cross section orthogonal to the longitudinal direction and having an opening upward. This opening opens the wire harness accommodating space 23 inside the case.

  The cylindrical portion 13 may be formed in a substantially linear shape, or may be formed in a curved shape as in the present embodiment. One end side wire harness lead-in / out part 25 is formed on one end side in the longitudinal direction of the tubular part 13, and the other end side wire harness lead-in / out part 27 is formed on the other end side in the longitudinal direction of the tubular part 13. A fixing flange portion 29 is attached to the intermediate portion in the longitudinal direction of the case 14 constituting the tubular portion 13 (in the present embodiment, the intermediate portion closer to one end side in the longitudinal direction). A vehicle clip fixing portion 31 is formed outside the other end side of the case 14.

  The lid 15 is formed in a shape in plan view of the case 14, that is, a shape following the upper opening. As for the cover body 15, the both sides along a wire harness become the 1st edge part 33 and the 2nd edge part 35. As shown in FIG. The first edge portion 33 and the second edge portion 35 are R bent portions that are bent and bent toward the case 14. The R-bending portion is put on the outside of the first side portion 17 and the second side portion 19 of the case 14.

  The case 14 is provided with a plurality of first locking portions 37 (see FIG. 5) at intervals along the longitudinal direction of the first side portion 17 and the first edge portion 33. Similarly, the lid 15 is provided with a plurality of second lock portions 39 (see FIG. 5) at intervals along the longitudinal direction. The first lock part 37 and the second lock part 39 are engaged with each other to fix the lid 15 to the case 14.

  By the way, the protector 11 of this embodiment is attached to the attachment surface 43 arrange | positioned at the lower surface side of the body panel 41 (refer FIG. 4) which cross | intersects a perpendicular line and is a to-be-fixed part. The protector 11 is provided with the fixed flange portion 29 described above. As shown in FIG. 2, the fixing flange portion 29 is provided in the middle portion in the longitudinal direction of the tubular portion 13 and is formed so that the front and back surfaces of the fixing portion 47 extend in a direction intersecting the mounting surface 43 when the vehicle body is attached. . That is, the fixing portion 47 is connected to the case 14 via the connecting portion 46, and the connecting portion 46 and the fixing portion 47 define a nut mounting space 45 between the cylindrical portion 13. . The fixed flange portion 29 is a fixed portion 47 on the opposite side of the case 14 across the nut mounting space 45. That is, the fixing portion 47 is connected to the case 14 with the nut mounting space 45 between the fixing portion 47 and the outer side surface 49 (see FIG. 5) of the case 14. And the fixing | fixed part 47 is formed so that front and back may extend in the direction which cross | intersects the attachment surface 43 at the time of vehicle attachment.

A stud bolt 51, which is a mounting bolt, is suspended from a fixed surface 44 of the body panel 41 that intersects the mounting surface 43. The stud bolt 51 protrudes in a direction penetrating the fixing portion 47 of the fixing flange portion 29 of the protector 11 attached to the attachment surface 43.
As shown in FIG. 3, in the vehicle body temporary fixing structure of the wire harness of this embodiment, the drop direction G acting on the protector 11 attached to the body panel 41 and the fixing portion 47 of the fixing flange portion 29 are passed through the stud bolt 51. The mounting direction T of the protector 11 is different from the direction. The fixing portion 47 is provided with a bolt insertion hole 53 for inserting the stud bolt 51. The bolt insertion hole 53 provided in the fixing portion 47 is formed in a U-shape with an open end facing the mounting surface 43, and the end of the opened bolt insertion hole 53 is a connecting portion. It communicates with a bolt insertion hole 54 formed in 46. That is, the bolt insertion hole 53 and the bolt insertion hole 54 are formed by an integral long hole that extends while being bent over the fixing portion 47 and the connecting portion 46.
When the protector 11 is mounted on the vehicle, the side surface side of the stud bolt 51 is inserted from the bolt insertion hole 54 toward the nut mounting space 45 and penetrated through the bolt insertion hole 53. A nut is attached to the tip of the stud bolt 51 disposed in the nut attachment space 45 by using the nut attachment space 45.

  The bolt hole 53 is formed as a long hole extending in a direction along the assembling direction of the protector 11, and a metal collar 55 formed in a U shape is fixed to the inner peripheral surface. The metal collar 55 is fixed in such a direction that the bent portion 57 is disposed on one end side in the longitudinal direction of the bolt insertion hole 53 supported by the stud bolt 51.

  By attaching the metal collar 55 to the bolt insertion hole 53, the fastening force of the nut is surely received, the deformation of the fixing portion 47 can be eliminated, and the fastening force acts on the fixing portion 47 in a well-balanced manner. Can do. As a result, it is possible to prevent the fixing flange portion 29 from being deformed by the fixing portion 47 and to be shaved due to vibration, and to securely fix the protector 11 to a predetermined location without loosening the nut.

Next, the effect | action of the vehicle body temporary fixing structure of the wire harness which has the said structure is demonstrated.
In the vehicle body temporary fixing structure of the wire harness according to the present embodiment, the stud bolt 51 suspended from the fixing surface 44 that intersects the mounting surface 43 of the body panel 41 is notched in the fixing portion 47 of the fixing flange portion 29. The bolt insertion hole 53 is passed. At this time, the stud bolt 51 is inserted from the open end of the bolt insertion hole 53 on the side facing the mounting surface 43. Since the bolt insertion hole 54 is opened in the connecting portion 46 located in the insertion path of the stud bolt 51, the connecting portion 46 does not interfere with the stud bolt 51 to be inserted.
The fixing portion 47 of the fixing flange portion 29 through which the stud bolt 51 is inserted has two inner peripheral contact portions 59 (see FIG. 5) on the inner peripheral surface of the bolt insertion hole 53 (more precisely, the metal collar 55). The stud bolt 51 is supported in contact with two outer peripheral contact portions 61 at both ends in the diameter direction of the stud bolt 51.

  The stud bolt 51 receives a reverse force (shearing force) in the direction intersecting the axis from two inner peripheral contact portions 59 in the metal collar 55 mounted in the bolt insertion hole 53. Therefore, the fixing portion 47 of the fixing flange portion 29 is restricted from being detached from the stud bolt 51 by friction generated by this shearing force. At this time, in the protector 11, a drop moment in the direction intersecting with the bolt insertion hole 53 (falling direction G) acts on the upper end side in the longitudinal direction, thereby generating a rotational moment centered on the stud bolt 51. Rotation is restricted by the lower end side of the contact with the mounting surface 43 of the body panel 41. As a result, the protector 11 is supported at three points, ie, at least two outer peripheral contact portions 61 of the stud bolt 51 and the attachment surface 43 of the body panel 41 that contacts the lower end in the longitudinal direction of the protector 11 and dropped. Is prevented, and the body panel 41 can be temporarily fixed.

  Further, according to the vehicle body temporary fixing structure of the wire harness of the present embodiment, the metal collar 55 is fixed to the inner peripheral surface of the bolt insertion hole 53 to which substantially the entire weight of the protector 11 accommodating the wire harness is applied during temporary fixing. Is done. Therefore, even when the load due to the wire harness is large, damage to the bolt insertion hole 53 of the fixing flange portion 29 made of synthetic resin can be prevented, and the temporary fixing strength can be increased. Of course, when the protector housing the wire harness is relatively light and the load by the wire harness is not large, the metal collar 55 is omitted if the fixing portion 47 of the fixing flange portion 29 has sufficient strength. be able to.

Therefore, according to the vehicle body temporary fixing structure of the wire harness according to the present embodiment, the body panel 41 can be changed even when a plurality of fixing portions in the same direction with respect to the mounting surface 43 of the body panel 41 cannot be secured. The protector 11 can be temporarily fixed at a low cost.
In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 11 ... Protector 13 ... Cylindrical part 14 ... Case 15 ... Cover 29 ... Fixed flange part 41 ... Body panel (fixed part)
43 ... Mounting surface 44 ... Fixed surface 45 ... Nut mounting space 47 ... Fixed portion 51 ... Stud bolt (mounting bolt)
53 ... Bolt insertion hole 55 ... Metal collar

Claims (2)

A mounting surface that is arranged on the lower surface side of the fixed part across the vertical line;
A mounting bolt suspended from a fixed surface of the fixed portion that intersects the mounting surface;
A protector having a cylindrical portion that allows a wire harness routed along the fixed portion to be inserted;
A fixed flange portion provided at a middle portion in the longitudinal direction of the cylindrical portion, and formed so that front and back surfaces of the fixed portion extend in a direction intersecting the mounting surface when the vehicle body is mounted;
A bolt insertion hole provided in the fixing portion for inserting the mounting bolt, and formed in a U-shape notched in an open end facing the mounting surface;
A vehicle body temporary fixing structure for a wire harness, comprising:   The body fixing structure for a wire harness according to claim 1, wherein a metal collar formed in a U-shape is fixed to an inner peripheral surface of the bolt insertion hole.

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