JP2011236940A - Structure for bolt fixing part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a fixing member while absorbing tolerance in all directions.SOLUTION: A structure 1 for a bolt fixing part is for fixing a fixing member 3 to a bolt disposed at a fixing part (car body). A supporting frame body 5 is formed at a fixing member 3; a collar body 9 having a long hole 7 to which a volt penetrates through is disposed at the inside of the supporting frame 5; bolt locking parts 11, 11 where a part 21 locking the bolt is extended in a long axis direction of the long hole 7 is provided inside the long hole 7; and flexible hinges 13, 13 absorbing shifts in a short axis direction of the long hole 7 are placed between a support frame 5 and the collar.

Description

  The present invention relates to a bolt fixing portion structure for fixing a member to be fixed to bolts provided at a plurality of locations on the vehicle body side, such as a protector that accommodates a wire harness.

  Conventionally, when a fixed member is fixed to a vehicle body at a number of locations, one of the fixed locations is used as a positioning point, and accumulated tolerances (position errors) are absorbed at other fixed locations.

  However, in the case of a long fixed member such as the wire harness protector 201 (FIG. 9) or a unit box, or a fixed member with many fixing points 203, the accumulated tolerance becomes too large to be absorbed by other fixing points 203. It may not be able to be completed.

  Patent Document 1 and Patent Document 2 describe that the accumulated tolerance is absorbed by making the fixing portion into an oval shape.

JP 2007-198550 A JP 2007-198551 A

  However, even if the fixing portion is an oval, the tolerance in the major axis direction of the ellipse can be absorbed, but the tolerance in the minor axis direction cannot be absorbed.

  Then, this invention aims at provision of the bolt fixing | fixed part structure which can fix a to-be-fixed member easily, absorbing tolerance in all directions.

  The bolt fixing part structure according to claim 1 is a bolt fixing part structure for fixing a fixed member to a bolt provided on a fixing side, and a support frame body provided on the fixed member; A collar body that is disposed inside and has a long hole through which the bolt is inserted, and is provided so as to be engaged with the bolt inside the elongated hole, and a portion that engages with the bolt extends in the major axis direction of the elongated hole. Flexibility to connect the bolt locking part, the support frame body and the color body in the short axis direction of the long hole, and absorb the displacement in the short axis direction generated between the support frame body and the color body And a hinge body.

  The invention of claim 2 is the bolt fixing portion structure according to claim 1, wherein the bolt locking portion includes a flexible locking arm provided on the wall surface of the elongated hole, and the locking arm. When the fixed member is fixed to the bolt on the fixed side, the flexible locking arm is pressed by the bolt entering the elongated hole and bent. In this case, the bolt is allowed to enter, and the locking projection is engaged with the screw groove of the intruded bolt to temporarily fix the fixed member.

  A third aspect of the present invention is the bolt fixing portion structure according to the first or second aspect, wherein a pair of the bolt locking portions are provided in the long axis direction and the short axis direction of the long hole, respectively. The locking projections for locking with the bolts extend in the long axis direction of the long hole at the pair of bolt locking portions provided in the short axis direction, and are connected to the pair of bolts provided in the long axis direction. It is characterized by being formed longer than the stop.

  A fourth aspect of the present invention is the bolt fixing portion structure according to any one of the first to third aspects, wherein the support frame body is broken when a predetermined external force is applied to the flexible hinge body. And an easily breakable portion for facilitating disassembly of the collar body.

  A fifth aspect of the present invention is the bolt fixing portion structure according to any one of the first to fourth aspects, comprising a reinforcing collar having an annular portion and a flange portion, wherein the annular portion is a long hole. The collar body is mounted between the wall surface and the bolt locking portion along the wall surface.

  A sixth aspect of the present invention is the bolt fixing portion structure according to the fifth aspect of the invention, comprising a cover attached to the support frame, and the cover does not interfere with the collar body and the hinge body. The flange portion of the reinforcement collar is sandwiched between the support frame body and the reinforcement collar in a state of being attached to the support frame body to prevent the reinforcement collar from falling off.

  In the bolt fixing portion structure according to claim 1, in the major axis direction of the long hole provided in the collar body, the tolerance is absorbed by extending the locking portion with the bolt in the major axis direction, and the minor axis direction of the long hole is Then, since the support frame body and the collar body are connected by a flexible hinge body, the tolerance is absorbed by the expansion and contraction of the flexible hinge body. Therefore, unlike the conventional example, the tolerance is absorbed in all directions. The member to be fixed can be fixed while being fixed.

  In the bolt fixing portion structure according to claim 2, the bolt locking portion is composed of a flexible locking arm and a locking projection provided on the locking arm, and fixes the fixed member to the bolt on the fixed side. When the bolt is made to enter into the long hole upon hitting, the locking arm pressed by the bolt is bent, the locking projection and the screw groove of the bolt are engaged, and the fixed member is temporarily fixed. The effect is obtained.

  According to a third aspect of the present invention, in the bolt fixing portion structure according to the first or second aspect, the locking protrusions are extended in the long axis direction of the long hole in the pair of bolt locking portions provided in the short axis direction of the long hole. The same effect as the configuration can be obtained.

  Further, by providing a pair of bolt locking portions also in the long axis direction of the long hole, the temporary fixing function of the fixed member is improved.

  The bolt fixing part structure according to claim 4 can achieve the same effects as the structures according to claims 1 to 3.

  Further, since the flexible hinge body can be broken only by applying a predetermined external force by providing the easily breakable portion, it is easy to disassemble the support frame body and the collar body (remove the fixed member). .

  The bolt fixing portion structure according to the fifth aspect can obtain the same effects as those of the first to fourth aspects.

  Moreover, the strength of the bolt fixing portion structure is improved by mounting the reinforcing collar (annular portion) between the wall surface of the collar main body (long hole) and the bolt locking portion.

  The bolt fixing portion structure according to the sixth aspect can obtain the same effect as that of the fifth aspect.

  In addition, the strength of the bolt fixing structure is further improved by attaching the cover to the support frame, and the reinforcement collar is prevented from falling off by sandwiching the flange portion of the reinforcement collar between the cover and the support frame. Is done.

It is a perspective view which shows the protector 3 for wire harnesses in which the bolt fixing | fixed part structure 1 of this invention was used. It is an upper surface enlarged view of the bolt fixing | fixed part structure 1. FIG. 3 is a perspective view of a support frame body 5 and a color main body 9. FIG. 3 is a perspective view of a reinforcing collar 27. FIG. 4 is a perspective view of a cover 35. FIG. It is a perspective view of the bolt fixing | fixed part structure 1. FIG. FIG. 3 is a perspective view showing the bolt fixing portion structure 1 cut in a short axis direction of a long hole 7. It is AA sectional drawing of FIG. It is a perspective view of a prior art example.

  Hereinafter, an embodiment of a bolt fixing portion structure according to the present invention will be described with reference to FIGS.

  The bolt fixing portion structure 1 is used to fix a protector 3 (fixed member: FIG. 1) for a wire harness to a bolt provided on the vehicle body (fixing) side, and is formed integrally with the protector 3. As shown in FIG. 3, the support frame body 5 is provided inside the support frame body 5 and has a collar body 9 having a long hole 7 through which a bolt is inserted, and is provided so as to be engaged with the bolt inside the long hole 7. The bolt locking portions 11, 11 in which a portion (locking protrusion 21) that locks with the bolt extends in the long axis direction of the long hole 7, the support frame body 5 and the collar body 9 are connected to the long hole 7. Are connected in the short axis direction, and have flexible hinge bodies 13 and 13 that absorb the displacement in the short axis direction generated between the support frame 5 and the collar body 9.

  A pair of the bolt locking portions 11 is provided in the short axis direction of the long hole 7, and another pair of bolt locking portions 15 is provided in the long axis direction of the long hole 7. These bolt locking portions 11, 15 include flexible locking arms 17, 19 provided on the wall surface of the long hole 7, and locking projections 21, 23 provided on the locking arms 17, 19. As described above, the locking projection 21 of the bolt locking portion 11 extends in the long axis direction of the long hole 7 and is longer than the locking projection 23 of the bolt locking portion 15. Yes.

  When the protector 3 is fixed to the bolt on the vehicle body side, the locking arms 17 and 19 are pressed by the bolts that enter the elongated holes 7 and are allowed to intrude by bending, and the locking projections 21 and 23 enter. Engage with the thread of the bolt.

  Each flexible hinge body 13 is provided with an easily breakable portion 25 that breaks when a predetermined external force is applied and facilitates disassembly of the support frame 5 and the collar body 9 (removal of the protector 3). .

  The collar body 9 is provided with a reinforcing collar 27 (FIG. 4). The reinforcing collar 27 has an annular portion 29 and a flange portion 31, and the annular portion 29 avoids interference with the locking arm 17 and the locking projection 21 of the bolt locking portion 11 as shown in FIG. The interference avoiding portion 33 is provided, and the annular portion 29 is mounted on the collar body 9 between the wall surface and the bolt locking portions 11 and 15 (locking arms 17 and 19) along the wall surface of the long hole 7. Is done.

  Further, a cover 35 (FIG. 5) is attached to the support frame 5, and the cover 35 has an accommodating portion 37 that accommodates these without interfering with the collar body 9 and the hinge bodies 13 and 13, As shown in FIGS. 6 to 8, the flange portion 31 is sandwiched between the support frame body 5 and the reinforcing collar 27 from falling off while being attached to the support frame body 5.

  As shown in FIG. 1, the support frame 5 and the cover 35 are brackets provided on the protector 3 for attachment to the vehicle body, and the protector 3 has a two-part structure of the support frame 5 and the cover 35. As shown in FIGS. 1 and 2, an opening / closing hinge 39 is provided between the support frame 5 and the cover 35, and when the hinge 39 is closed, the support frame 5 side and the cover 35 side are provided. The lock part 41 which locks is provided. The protector 3 opens the hinge 39 and attaches the reinforcing collar 27 to the collar body 9 to accommodate the wire harness. Then, the protector 3 closes the hinge 39 and locks the lock portion 41.

  In attaching the protector 3 (wire harness) to the bolts provided at many places on the vehicle body, when the bolts are inserted into the respective long holes 7, as described above, the locking arms 17, 15 of the bolt locking portions 11, 15 are provided. When the bolt 19 is pressed by the bolt and bent, the bolt is allowed to enter, and the locking projections 21 and 23 are engaged with the screw grooves of the bolt to temporarily fix the protector 3. At this time, the bolt locking portion 11 of the long hole 7 absorbs the tolerance in the long axis direction (cumulative error: arrow 43 in FIG. 6) on the locking protrusion 21 extending in the long axis direction. In the minor axis direction, as described above, the minor axis direction tolerance (cumulative error: arrow 45 in FIG. 6) generated between the support frame 5 and the collar body 9 due to the contraction of the flexible hinge bodies 13 and 13 is absorbed. Is done.

  After the protector 3 is temporarily fixed, the nut 3 is finally tightened to the bolt in each bolt fixing portion structure 1 to complete the fixing of the protector 3.

  Further, when the protector 3 is removed from the vehicle body, if the protector 3 is pulled strongly (giving a predetermined external force), the easily breakable portion 25 of the flexible hinge 13 is broken and the support frame 5 and the collar main body 9 are broken. And so on, the protector 3 can be easily removed.

  In the bolt fixing portion structure 1 of the present embodiment, in the major axis direction of the long hole 7 provided in the collar body 9, a tolerance (cumulative error) is obtained by extending the locking projection 21 of the bolt locking portion 11 in the major axis direction. ) Is absorbed, and in the minor axis direction of the long hole 7, the tolerance (cumulative error) is absorbed by the expansion and contraction of the flexible hinge body 13 that connects the support frame body 5 and the collar body 9. Thus, the protector 3 can be easily fixed while absorbing tolerances in all directions.

  In addition, since the easily breakable portion 25 is provided in the flexible hinge body 13, the easily breakable portion 25 can be broken only by applying a predetermined external force, so that the protector 3 can be easily detached.

  Further, the strength of the bolt fixing portion structure 1 is improved by mounting the reinforcing collar 27 on the collar body 9.

  Further, the strength of the bolt fixing portion structure 1 is further improved by attaching the cover 35 to the support frame body 5, and the flange portion 31 is sandwiched between the cover 35 and the support frame body 5, so that the reinforcement collar 27. Dropping is prevented.

[Other Embodiments Included within the Scope of the Present Invention]
The present invention is not limited to the above embodiment, and can take other forms.

  The bolt fixing portion structure of the present invention can also be used when a fixed member other than the protector is attached to a fixing side other than the vehicle body.

1 Bolt fixing part structure 3 Protector (fixed member)
DESCRIPTION OF SYMBOLS 5 Support frame body 7 Long hole 9 Collar body 11,15 Bolt locking part 13 Flexible hinge body 17,19 Locking arm 21,23 Locking protrusion 25 Easily breakable part 27 Reinforcement collar 29 Annular part 31 Flange part 35 Cover 37 Housing

Claims (6)

A bolt fixing part structure for fixing a fixed member to a bolt provided on the fixing side,
A support frame provided on the fixed member;
A collar body disposed inside the support frame and having a long hole through which the bolt is inserted;
A bolt locking portion provided so as to be locked with the bolt inside the long hole, and a portion locked with the bolt is extended in the long axis direction of the long hole;
The support frame body and the color main body are connected in the short axis direction of the long hole, and a flexible hinge body that absorbs the displacement in the short axis direction generated between the support frame body and the color main body is provided. Bolt fixing part structure. The bolt fixing part structure according to claim 1,
The bolt locking portion has a flexible locking arm provided on the wall surface of the long hole, and a locking projection provided on the locking arm,
When fixing the fixed member to the bolt on the fixed side,
The flexible locking arm is pressed by a bolt that enters the elongated hole, and allows the bolt to enter by bending,
A bolt fixing portion structure, wherein the locking projection engages with a screw groove of an invading bolt to temporarily fix a fixed member. The bolt fixing part structure according to claim 1 or 2,
A pair of the bolt locking portions are provided in the long axis direction and the short axis direction of the long hole,
The locking projections for locking with the bolts extend in the long axis direction of the long hole in the pair of bolt locking portions provided in the short axis direction, and the pair of bolt locking portions provided in the long axis direction Bolt fixing part structure characterized by being formed longer. The bolt fixing part structure according to any one of claims 1 to 3,
A bolt fixing portion structure characterized in that the flexible hinge body is provided with an easily breakable portion that breaks when a predetermined external force is applied to facilitate disassembly of the support frame body and the collar body. The bolt fixing part structure according to any one of claims 1 to 4,
A reinforcing collar having an annular portion and a flange portion is provided.
The annular fixing portion is attached to the collar body between the wall surface and the bolt locking portion along the wall surface of the long hole. The bolt fixing part structure according to claim 5,
A cover mounted on the support frame;
The cover has an accommodating portion for accommodating the collar body and the hinge body without interfering with the collar body and the hinge body,
A bolt fixing portion structure characterized in that the flange portion of the reinforcing collar is sandwiched between the support frame body and the flange portion of the reinforcing collar is prevented from falling off while being attached to the support frame body.

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