JP2010213426A - Clamp for wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily secure a clamp for wire harness to a bolt projected from a vehicle side with a high retaining force. <P>SOLUTION: A lock piece is provided in a J-folding shape projecting from the inner face on a bolt insertion side of a cylinder protruding from a wire harness fitting part, a space is formed between the lock piece and the inner face of the cylinder, and a first lock claw is projectingly provided to be inserted for locking in the bolt screw groove on the projection-side inner face of the lock piece. Furthermore, a rotary piece is projectingly provided via a thin hinge from the outer face opposite to the bolt insertion side of the cylinder, a second lock claw to be inserted for locking in the bolt screw groove is provided at the tip of the rotary piece, and a press part is provided to be pressed into the space between the inner face of the cylinder and the lock piece from the middle position of the rotary piece. The first lock piece is locked in the bolt screw groove, and the rotary piece is turned to the cylindrical side, causing the rotary piece to be pressed into the space and the second lock claw to be locked in the screw groove. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wire harness clamp, and more specifically, a wire harness clamp can be fixed to a bolt projecting from a vehicle body side with a high holding force, and the clamp can be fixed to a bolt relatively easily.

  In order to route a wire harness for an automobile along a predetermined route, a wire harness clamp (hereinafter referred to as a clamp) attached to the wire harness is fixed to the vehicle body. As a method of fixing the clamp to the vehicle body, there are many cases where the locking piece provided on the clamp is locked and fixed to a bolt protruding from the vehicle body. For example, as shown in FIG. 6, a bolt insertion hole 2 for insertion into a stud bolt 6 protruding from the vehicle body 5 is provided in the clamp 1, and a locking piece is provided along the inner peripheral surface of the bolt insertion hole 2. (Elastic piece) 3 is erected, and the latching claw 4 protruding from the inner surface side of the latching piece 3 is engaged with the thread groove 7 of the stud bolt 6 to fix the clamp 1 to the stud bolt 6. (See JP-A-8-140247).

  It is desired that the clamp be fixed to the bolt with a higher holding force. To this end, the strength of the locking piece of the clamp is prevented so that the locking claw engaged with the screw groove of the bolt does not shift outward. Need to be increased. However, when the strength of the locking piece is increased, the insertion force required to insert and lock the locking claw into the screw groove of the bolt increases, and the clamp cannot be easily fixed to the bolt.

Japanese Patent Laid-Open No. 8-140247

  The present invention has been made in view of the above problems, and it is possible to fix the wire harness clamp to the bolt protruding from the vehicle body side with a high holding force, and a large insertion force is also required when fixing the clamp to the bolt. The problem is that it can be fixed relatively easily.

In order to solve the above problems, the present invention is a clamp for fixing a wire harness to a bolt projecting from the vehicle body side,
A tube part for mounting the vehicle body protrudes from the wire harness attachment part,
A locking piece protrudes from the inner surface of the tube portion on the bolt insertion side in a J-shaped folded shape, and a space is formed between the locking piece and the inner surface of the tube portion. A first locking claw that is inserted and locked into the screw groove of the bolt on the inner side surface, and
A rotating piece protrudes from the outer surface of the tube portion on the side opposite to the bolt insertion side through a thin hinge portion, and a second locking claw that is inserted and locked into the screw groove of the bolt is provided at the tip of the rotating piece and A pressing portion is provided to press fit into the space between the inner surface of the cylindrical portion and the locking piece from an intermediate position of the rotating piece,
The first locking claw is locked to the screw groove of the bolt, the rotating piece is rotated to the cylinder side, the pressing portion of the rotating piece is press-fitted into the space, and the second locking claw is A wire harness clamp is provided that is locked in a screw groove of a bolt.

  As described above, the locking piece protrudes from the inner surface of the tube portion on the bolt insertion side in a J-shaped folded shape, and the rotating piece protrudes from the outer surface of the tube portion on the anti-bolt insertion side via the thin hinge portion. And a pressing portion that press-fits into a space between the inner surface of the cylindrical portion and the locking piece from an intermediate position of the rotating piece. Therefore, by rotating the rotating piece and press-fitting the pressing portion into the space, the pressing portion presses the locking piece to the bolt side, and the first locking claw protruding from the protruding side inner surface of the locking piece is screwed. It can be firmly locked in the groove. That is, according to the above-described configuration, the pressing portion of the rotating piece is placed in the space while the strength of the locking piece is the same as that of the conventional locking piece and the insertion force for fixing the clamp to the bolt is also suppressed to the same level as the conventional one. The holding force of the clamp against the bolt can be increased by press-fitting into the bolt.

In addition, since the first locking claw is provided on the projecting side inner surface of the locking piece and the second locking claw is provided at the tip of the rotating piece, the first locking claw is inserted into the screw groove of the bolt. In addition to stopping, by rotating the rotating piece and inserting and locking the second locking claw in another screw groove on the upper side, two-stage locking by the first locking claw and the second locking claw becomes possible, The holding force of the clamp with respect to the bolt can be further increased. Further, by locking the second locking claw and the screw groove of the bolt, it is possible to prevent the pressing portion from coming off from the space and to prevent the rotating piece from coming off. In particular, it is preferable to dispose the pressing portion and the second locking claw so that the pressing portion and the second locking claw sandwich the locking piece from the left and right in a state where the rotating piece is rotated to the cylinder portion side.
The bolt for fixing the clamp is a stud bolt that is welded to the vehicle body and protrudes, and the first and second locking claws are locked in a spiral thread groove formed in the stud bolt. Is preferred.

  It is preferable that a pair of the locking pieces is provided at least at a position opposed to the inner surface of the cylindrical portion, while the rotating piece is provided on the outer surface side facing the locking pieces.

  As described above, by providing a pair of locking pieces provided with the rotating pieces on the opposing outer surface sides at least at the opposing positions, the holding force of the clamp with respect to the bolt can be further increased, and the holding force is balanced. be able to.

The wire harness attachment portion is connected to both side plates having an L-shaped cross section via a thin hinge portion, and the tube portion is connected via a support portion from a front end outer surface in the length direction of one side plate of the wire harness attachment portion. While providing
It is preferable that the other end of the wire harness attachment portion in the length direction is fixed to the wire harness by tape winding or band fastening.

As described above, by connecting the both side plates having an L-shaped cross section via the thin hinge portion to form the wire harness attachment portion, it is arranged on the side surface side of the wire harness according to the thickness of the wire harness to be attached. The angle formed by the two side plates can be changed, and wire harnesses of various thicknesses can be attached.
Moreover, the strength of the connecting portion between the wire harness attachment portion and the cylinder portion can be increased by providing the cylinder portion via the support portion from the outer end surface in the length direction of the one side plate of the wire harness attachment portion. . Furthermore, the wire harness can be stably held by the clamp by tape-wrapping or band-fastening the other end in the length direction of the wire harness attachment portion to the wire harness.

  As described above, the rotating piece protrudes from the outer surface of the cylindrical portion on the side opposite to the bolt insertion side through the thin hinge portion, and the space between the inner surface of the cylindrical portion and the locking piece from the intermediate position of the rotating piece. Since the pressing portion to be press-fitted is provided, the pressing portion presses the locking piece toward the bolt side by rotating the rotating piece and press-fitting the pressing portion into the space, and the first engagement projecting from the locking piece. The pawl can be securely locked in the thread groove. That is, the locking piece has the same strength as that of the conventional locking piece, and the pressing force of the rotating piece is press-fitted into the space while the insertion force for fixing the clamp to the bolt is suppressed to the same level as in the conventional case. The holding force of the clamp with respect to can be increased.

  Further, the first locking claw is provided on the protruding side inner surface of the locking piece protruding in a folded shape from the inner surface of the cylindrical portion, and the second locking claw is provided at the tip of the rotating piece. Two-stage locking with the claw and the second locking claw is possible, and the holding force of the clamp with respect to the bolt can be further increased. Further, by the engagement between the second locking claw and the screw groove of the bolt, it is possible to prevent the pressing portion from coming out of the space and the detachment of the rotating piece.

It is a schematic perspective view of the clamp for wire harnesses of the embodiment of the present invention. (A) is a plan view of FIG. 1, (B) is an AA cross-sectional view, and (C) is a BB cross-sectional view. It is the schematic which shows the state which the 1st latching claw inserted and latched in the screw groove of the stud bolt protruding from the vehicle body side, (A) before rotating a rotating piece, (B) rotating a rotating piece. FIG. It is the schematic perspective view seen from the lower surface side of the clamp for wire harnesses. It is the schematic which shows the final fixed state to the vehicle body of the clamp which attached the wire harness. It is a figure which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of the present invention. A wire harness clamp 10 (hereinafter referred to as a clamp 10) according to the present embodiment is a clamp that is fixed to a stud bolt 31 projecting from a vehicle body panel 30, and is molded from polypropylene resin or nylon resin in the present embodiment. The clamp 10 is provided with a cylindrical portion 15 via a support portion 14 from the longitudinal end of the wire harness mounting portion 11, and the cylindrical portion 15 is attached to a stud bolt 31 protruded by welding from the vehicle body panel 30 on the lower surface side. Insert from (15a).

  Specifically, as shown in FIGS. 1 to 3, a locking piece 16 protrudes in a J-shaped folded shape from the inner surface of the cylinder portion 15 on the bolt insertion side (lower surface side 15 a). A first locking claw 17 that is inserted and locked into the thread groove 32 of the stud bolt 31 is provided on the inner surface of the protruding side of 16. Here, a space S is opened between the inner surface of the cylindrical portion 15 and the locking piece 16. In the present embodiment, a pair of locking pieces 16 are provided at opposing positions at intervals of 180 degrees.

  Further, a rotating piece 19 is protruded from the outer surface of the cylindrical portion 15 on the side opposite to the bolt insertion side (upper surface side 15 b) through a thin hinge portion 18 from a position facing each locking piece 16. A second locking claw 20 that is inserted and locked in the thread groove 32 of the stud bolt 31 is provided at the tip of the rotating piece 19, and the inner surface of the cylindrical portion 15 and the locking piece are arranged from an intermediate position of the rotating piece 19. A pressing portion 21 that is press-fitted into the space S between the two is provided. The second locking claw 20 and the pressing portion 21 are arranged so that the second locking claw 20 and the pressing portion 21 sandwich the locking piece 16 from the left and right in a state where the rotating piece 19 is rotated toward the tube portion 15 side. ing.

  Further, in the present embodiment, a pair of locking portions 22 as shown in FIG. 2 (C) are protruded from the inner surface of the cylindrical portion 15 at a position that is 90 degrees apart from the locking pieces 16. . The locking portion 22 also has a shape that can be inserted and locked into the thread groove 32 of the stud bolt 31.

    On the other hand, the wire harness attachment portion 11 of the clamp 10 is formed by connecting two side plates 12 a and 12 b having an L-shaped cross section via a thin hinge portion 13. Further, of the two side plates 12a and 12b, three triangular support portions 14 as shown in FIG. 4 are projected from the outer front end in the length direction of one side plate 12a. The wire harness attachment part 11 and the cylinder part 15 are connected. The wire harness W / H is placed on the wire harness attachment part 11 and the other end in the length direction of the wire harness attachment part 11 is taped (T) around the wire harness W / H. It is attached to the clamp 10.

Hereinafter, the fixing of the clamp 10 to the stud bolt 31 will be described with reference to FIG.
First, the cylindrical portion 15 of the clamp 10 is inserted and inserted into the stud bolt 31 projecting from the vehicle body panel 30 from the lower surface side 15a, and the first latching projecting from the latching piece 16 as shown in FIG. The claw 17 is inserted and locked in the thread groove 32 of the stud bolt 31, and the locking portion 22 is also inserted and locked in the thread groove 32.

Subsequently, the rotating pieces 19 are respectively rotated toward the cylindrical portion 15, the pressing portions 21 of the rotating pieces 19 are press-fitted into the space S, and the second locking claws 20 are engaged with the first locking claws 17. It is inserted and locked into the screw groove 32 above the groove 32 [FIG. 3 (B)]. Thereby, fixation of the clamp 10 to the stud bolt 31 is completed.
FIG. 5 shows a final fixed state of the clamp 10 to which the wire harness W / H is attached to the vehicle body 30.

  As described above, the rotating piece 19 is protruded from the outer surface of the tube portion 15 on the side opposite to the bolt insertion side (15b) via the thin hinge portion 18, and the inner surface of the tube portion 15 and the locking piece are positioned from the intermediate position of the rotating piece 19. A pressing portion 21 that is press-fitted into the space S between the two is provided. Therefore, by rotating the rotating piece 19 and press-fitting the pressing portion 21 into the space S, the pressing portion 21 presses the locking piece 16 toward the stud bolt 31 and protrudes from the protruding inner surface of the locking piece 16. The first locking claw 17 can be securely locked to the screw groove 32. That is, the strength of the locking piece 16 is set to the same level as the conventional locking piece, and the pressing portion 21 of the rotating piece 19 is set to the space while the insertion force for fixing the clamp 10 to the stud bolt 31 is also suppressed to the same level as the conventional level. By press-fitting into S, the holding force of the clamp 10 with respect to the stud bolt 31 can be increased.

In addition, since the first locking claw 17 is provided on the inner surface of the locking piece 16 projecting in a folded shape from the inner surface of the cylindrical portion 15, and the second locking claw 20 is provided at the tip of the rotating piece 19, the first The locking claw 17 is inserted and locked in the screw groove 32 of the stud bolt 31, and the rotating piece 19 is rotated to insert and lock the second locking claw 20 in the upper screw groove 32. Two-stage locking by the claw 17 and the second locking claw 20 is possible, and the holding force of the clamp 10 with respect to the stud bolt 31 can be further increased. Further, the engagement between the second locking claw 20 and the thread groove 32 of the stud bolt 31 can prevent the pressing portion 21 from coming off from the space S and prevent the rotating piece 19 from coming off.
According to the configuration of the present embodiment, the holding force of the clamp 10 with respect to the stud bolt 31 can be increased to 100 N or more, and the insertion force for fixing the clamp 10 to the stud bolt 31 can be suppressed to 40 N or less.

DESCRIPTION OF SYMBOLS 10 Wire harness clamp 11 Wire harness attachment part 12a, 12b Side plate 13 Thin hinge part 14 Support part 15 Cylinder part 16 Locking piece 17 1st latching claw 18 Thin hinge part 19 Rotating piece 20 2nd latching claw 21 Press part 30 Body panel 31 Stud bolt 32 Thread groove

Claims (3)

A clamp for fixing a wire harness to a bolt protruding from the vehicle body side,
A tube part for mounting the vehicle body protrudes from the wire harness attachment part,
A locking piece protrudes from the inner surface of the tube portion on the bolt insertion side in a J-shaped folded shape, and a space is formed between the locking piece and the inner surface of the tube portion. A first locking claw that is inserted and locked into the screw groove of the bolt on the inner side surface, and
A rotating piece protrudes from the outer surface of the tube portion on the side opposite to the bolt insertion side through a thin hinge portion, and a second locking claw that is inserted and locked into the screw groove of the bolt is provided at the tip of the rotating piece and A pressing portion is provided to press fit into the space between the inner surface of the cylindrical portion and the locking piece from an intermediate position of the rotating piece,
The first locking claw is locked to the screw groove of the bolt, the rotating piece is rotated to the cylinder portion side, the pressing portion of the rotating piece is press-fitted into the space, and the second locking claw is A clamp for a wire harness that is locked in a screw groove of a bolt.   2. The wire harness clamp according to claim 1, wherein a pair of the locking pieces is provided at least at a position opposed to the inner surface of the cylindrical portion, and the rotating piece is provided on an outer surface side facing the locking pieces. The wire harness attachment portion is connected to both side plates having an L-shaped cross section via a thin hinge portion, and the tube portion is connected via a support portion from a front end outer surface in the length direction of one side plate of the wire harness attachment portion. While providing
The wire harness clamp according to claim 1 or 2, wherein the other end in the length direction of the wire harness mounting portion is fixed to the wire harness by tape winding or band fastening.

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