JP3826616B2 - Wire harness protector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protector for a wire harness that is attached to an attachment hole of a vehicle body panel, and more specifically, to prevent rattling in an attached state.
[0002]
[Prior art]
The wire harness routed along the body panel of the automobile is housed in a resin protector in order to fix the form and protect the wire harness itself at the key points of the route. Then, the wire harness is fixed via the protector by fitting the mounting portion of the protector into the mounting hole formed at the required position of the vehicle body panel.
[0003]
As a mounting portion of the protector, generally, a clip integrally projecting from the protector is inserted into a small round hole of the vehicle body panel so as to be fitted. On the other hand, in the case of a large protector, in order to realize more stable fixing, a large mounting hole H is formed at a required position of the vehicle body panel P as shown in FIG. A cylindrical mounting portion 2 corresponding to the mounting hole H is projected, and the mounting portion 2 is inserted into the mounting hole H so as to be fitted therein. And the lock claw 3b protrudes on the outer surface of the elastic piece 3a which can be bent inward as the lock portion 3 on the peripheral wall 2a of the attachment portion 2, and the lock claw 3b and the flange portion 2b at the base of the attachment portion 2 The vehicle body panel P is sandwiched between the two so as to be fixed by engaging with each other.
[0004]
[Problems to be solved by the invention]
However, since the protector 1 is made of resin, some deformation or dimensional error during molding is unavoidable. Therefore, as shown in FIG. A gap Xa is generated in In addition, when the mounting portion is inserted, the lock claw 3b is pushed inward by elasticity in the process from the state shown in FIG. 7A to FIG. A ring is obtained, and for this purpose, a gap Xb is set between the mounting hole H and the back side of the mouth edge. Therefore, the presence of the gaps Xa and Xb causes backlash in the state where the protector 1 is fixed in the mounting hole H.
[0005]
The present invention has been made in view of the above-described problems, and prevents looseness after internal fitting without impairing the operation feeling of the elastic lock claw when mounting the mounting portion of the protector to the mounting hole of the vehicle body panel. The challenge is to do.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a peripheral wall portion that is inserted and fitted in a mounting hole of a vehicle body panel, and protrudes from a base portion of the peripheral wall portion and comes into contact with a surface side of a mouth edge portion of the mounting hole. A protector for a wire harness made of a resin having a flange and a mounting portion having a locking claw that engages with the back surface side of the mouth edge portion in a state of being fitted into the mounting hole in the peripheral wall portion ,
The above peripheral wall portion integrally projecting ribs extending along the insertion direction into the attachment hole, the rib is set in the projecting dimension of the extent to which the outer dimension of the peripheral wall portion is slightly larger than the inner dimension of the mounting hole In addition, a discharge hole is formed at a position corresponding to the upper end of the rib in the collar portion,
When the peripheral wall portion is fitted into the mounting hole, the resin scraps of the rib scraped by the inner peripheral edge of the mounting hole are discharged from the discharge hole, and the rib is crushed into the inner peripheral portion of the rib and densely packed. Provided is a wire harness protector characterized in that it can be attached in a fitted state.
[0007]
According to the said structure, when attaching the attachment part of a protector to the attachment hole of a vehicle body panel, the rib protrudingly provided by the surrounding wall part interferes with an attachment hole, and is inserted while it is scraped. For this reason, the clearance gap between a surrounding wall part and an attachment hole is absorbed by a rib, and it can fix reliably, without producing backlash with respect to an attachment hole also in the final position engaged with a lock nail | claw. At that time, even if a gap is generated between the lock claw and the back side of the mounting hole, the edge of the mounting hole bites into the rib, so that play in the insertion direction can be similarly prevented. .
[0008]
It is preferable that the rib be formed in a tapered shape in which the protrusion amount decreases as it goes from the height position corresponding to the lower surface of the flange portion toward the insertion direction of the peripheral wall portion . In this way, in the initial stage of insertion of the attachment portion into the attachment hole, the degree of crushing the rib is small, so that the insertion resistance does not become too high, and the workability does not deteriorate.
[0009]
A discharge hole is formed at a position corresponding to the upper end of the rib in the collar portion to discharge resin waste of the rib scraped by the inner periphery of the mounting hole when the peripheral wall portion is fitted into the mounting hole . . As a result, the scraped resin waste can be discharged sequentially from the discharge hole, so that the resin waste accumulates between the bottom surface of the flange portion of the mounting portion and the front surface side of the lip portion of the mounting hole, and the mounting portion becomes incomplete. It is possible to prevent a complete fitting state.
[0010]
Furthermore, it is desirable that the rib be tapered toward the protruding end. Thereby, since the rib is easily crushed by the mouth edge portion when the mounting portion is inserted, the insertion resistance is reduced and workability at the time of insertion can be improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 protect a wire harness attached to an automobile, and in a resin protector 11 that is held in a required form and fixed to a vehicle body panel P, an attachment portion 12 that is fitted in a square attachment hole H. Is shown. The mounting portion 12 has an outer peripheral shape that substantially corresponds to the hole shape of the mounting hole H and is in contact with the rectangular cylindrical peripheral wall portion 12a and the surface side of the rim portion of the mounting hole H in the mounted state. The lock part 13 is provided in the position opposite to the both sides of the peripheral wall part 12a. The peripheral wall portion 12a is formed in a taper shape that is inclined inwardly in the insertion direction in order to facilitate the initial insertion into the mounting hole H.
[0012]
The locking part 13 forms elastic pieces 13a that can be elastically bent by making two cuts 13c downward from the upper end of the peripheral wall part 12a, and a lock claw 13b on the upper outer surface of the elastic piece 13a. Is protruding. The lock claw 13b is provided with a tapered guide surface 13d which is inclined upward, that is, in a direction protruding outward as it goes in the direction of the flange 12b, and a locking surface 13e parallel to the flange 12b. Then, when the mounting portion 12 is inserted into the mounting hole H, the guide surface 13d interferes with the inner periphery so that the elastic piece 13a bends inward, and then elastically recovers, so that the locking surface 13e and the flange portion 12b The mouth edge portion is sandwiched between them so as to be locked. The interval between the locking surface 13e and the flange 12b is set to be slightly larger than the thickness of the rim of the mounting hole H so that the return operation of the elastic piece 13a is not hindered by the frictional resistance with the lip. In addition, a light operation feeling of the lock operation can be obtained.
[0013]
In the peripheral wall portion 12 a, ribs 14 that extend along the direction of insertion into the mounting hole H are integrally projected at positions on both sides of the lock portion 13. The rib 14 is formed in a tapered shape with a protruding amount that decreases from the upper end toward the insertion direction, and the outer dimension of the entire peripheral wall portion 12a is slightly larger than the inner dimension of the mounting hole H in the vicinity of the upper portion. The projecting dimension is set so that the rib 14 interferes with the inner periphery of the edge of the mounting hole H during the fitting operation of the mounting part 12. As shown in FIG. 3, the rib 14 desirably forms a sharpened portion 14 a that tapers toward the projecting end, whereby the rib 14 is crushed by the lip H when the mounting portion 12 is inserted, It is easy to cut, and the insertion resistance is reduced. Further, a discharge hole 12c for discharging the resin scraps 14b of the rib 14 scraped by the interference with the mounting hole H is formed at a position corresponding to the upper end of the rib 14 in the flange portion 12b.
[0014]
Next, the process of attaching the wire harness protector configured as described above to the vehicle body panel P will be described. First, as shown in FIG. . Then, when the required depth is inserted and positioned, the rib 14 protruding from the peripheral wall portion 12a interferes with the inner periphery of the mounting hole H. Next, as shown in FIG. 4 (B), when the lever 14 is further pushed in, the ribs 14 are sequentially inserted while being scraped by the mounting holes H, and then the guide surface 13d of the lock claw 13b is pressed against the inner periphery of the mounting hole H. As a result, the elastic piece 13a bends inward. Subsequently, when the guide surface 13d has passed through the mounting hole H, as shown in FIG. 4C, the elastic piece 13a is elastically returned outward so that the locking surface 13e is moved around the back surface of the mounting hole H. Simultaneously with the locking, the vehicle body panel P is sandwiched by the flange portion 12b coming into contact with the surface of the edge of the mounting hole H.
[0015]
On the other hand, the rib 14 is also crushed by the inner peripheral surface of the mounting hole H and inserted while being cut, and as shown in FIG. 4C, the rib 14 is moved to the inner periphery of the mounting hole H when locked by the lock claw 13b. When the gap between the peripheral wall portion 12a and the base portion of the peripheral wall portion 12a is filled, backlash is prevented. In addition, since the resin scraps 14a of the rib 14 shaved by the mounting hole H are sequentially discharged from the discharge holes 12c formed in the flange 12b as shown in FIG. 5, the gap between the flange 12b and the mouth edge Therefore, it is possible to prevent the resin waste 14a from being accumulated and hindering the fitting of the mounting portion 12. Further, a gap Xb for securing an elastic return trajectory of the lock claw 13b exists between the locking surface 13e of the lock claw 13b and the back side of the rim of the mounting hole H, but the rib 14 is attached. Since the inner periphery of the hole H is tightly fitted, the gap Xb does not cause backlash.
[0016]
In the above embodiment, the rib 14 is provided on both sides of the lock portion 13 and at both ends of the peripheral wall portion 12a. However, the rib 14 may be provided at only one location.
[0017]
【The invention's effect】
As is clear from the above description, according to the protector for wire harness of the present invention, the gap between the mounting hole and the peripheral wall can be absorbed by the rib protruding from the peripheral wall. Can be reliably prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view of a mounting portion of a protector for a wire harness according to the present invention.
2A is a front view of a mounting portion, and FIG. 2B is a side view.
FIG. 3 is a cross-sectional view of a rib in a peripheral wall portion.
FIGS. 4A to 4C are cross-sectional views showing a process of attaching the attachment portion to the attachment hole of the vehicle body panel. FIGS.
FIG. 5 is a cross-sectional view showing a relationship between a rib and a mounting hole in a mounting state on a vehicle body panel.
FIG. 6 is a perspective view showing a conventional example.
FIGS. 7A and 7B are diagrams showing a conventional protector attachment process. FIGS.
[Explanation of symbols]
P Body panel H Mounting hole 11 Protector 12 Mounting portion 12a Peripheral wall portion 12b Gutter portion 12c Discharge hole 13b Lock claw 14 Rib 14b Resin scrap

Claims (2)

A peripheral wall portion that is inserted into the mounting hole of the vehicle body panel and fitted therein; and a flange portion that protrudes from the base portion of the peripheral wall portion and abuts on the surface side of the rim portion of the mounting hole. Is a protector for a wire harness made of a resin having a mounting portion provided with a lock claw that engages with the back surface side of the mouth edge portion in a state of being fitted into the mounting hole.
The above peripheral wall portion integrally projecting ribs extending along the insertion direction into the attachment hole, the rib is set in the projecting dimension of the extent to which the outer dimension of the peripheral wall portion is slightly larger than the inner dimension of the mounting hole And a discharge hole is formed at a position corresponding to the upper end of the rib in the collar portion,
When the peripheral wall portion is fitted into the mounting hole, the resin scraps of the rib scraped by the inner peripheral edge of the mounting hole are discharged from the discharge hole, and the rib is crushed into the inner peripheral portion of the rib and densely packed. A protector for a wire harness that can be attached in a fitted state. The protector for a wire harness according to claim 1, wherein the rib is formed in a tapered shape in which a protruding amount is reduced from a height position corresponding to a lower surface of the flange portion toward an insertion direction of the peripheral wall portion .

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