JP2013169040A - Band clip for wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase engaging force to a vehicle body of a band clip mounted to a wiring harness.SOLUTION: In the band clip for locking one locking claw out of locking claws of a plurality of stages in the vertical direction to a circumference of a mounting hole of a vehicle body by providing in a folded and protruded manner a pair of blade parts toward a base part side of a wiring harness attachment part side by shifting at both sides of a shorter direction and right and left of a longer direction at a bridging part linking a protruded end of a pair of supporting column parts provided in a protruded manner from a wiring harness attachment part provided with a fastening band, providing at least two stages of locking claws at an external surface of each blade part, and providing the locking claws by sequentially protruding locking claws at an upper stage side outward, a thin wall protrusion with flexibility is provided in a protruded manner from a protruded end of a locking claw of the lowermost stage, and a protruded end of the protrusion is protruded more outward than a protruded end of a locking claw of an adjacent upper stage.

Description

  The present invention relates to a band clip for a wire harness, and more specifically, in a band clip that is attached to a wire harness routed in an automobile or the like and inserts and locks the clip into a mounting hole of a vehicle body, and the clip is pushed too far. Also, it is possible to ensure locking with the vehicle body panel.

  Conventionally, various band clips for this type of wire harness have been proposed. For example, a band clip 100 shown in FIG. 9 proposed by the present applicant in Japanese Patent Application Laid-Open No. 2010-151174 includes a wire harness attachment portion 101 in which a fastening band 102 is provided protruding from a main body 103, and the wire harness attachment portion 101. And the clip 105 integrally formed. The clip 105 has a pair of left and right support pillars 111A and 111B protruding from a dish part 110 protruding from the outer surface of the main body 103, and a bridging part 112 connecting the protruding ends of the pair of support pillars 111A and 111B. A pair of blade portions 113A and 113B are projected in a folded manner toward the base portion 110 on both sides of the direction (width direction) Y and in the longitudinal direction X to the left and right, and the blade portions 113A and 113B A plurality of steps (three steps) of locking claws 114A and 114B are provided on the outer surface. Moreover, the center connection part 116 which connects the adjacent inner ends of blade part 113A and 113B is provided.

  In the band clip 100, the fastening band 102 is wound around the wire group of the wire harness 120 as shown in FIG. The locking piece protruding from the band through hole 103 a is locked and fastened to the wire harness 120. The wire harness 120 is routed along the vehicle body, the clip 105 is inserted into an oval mounting hole H provided in advance in the vehicle body panel P, and the blade portions 113A and 113B are bent and pushed into the mounting hole H. The locking claws 114A and 114B are locked to the peripheral edge in the longitudinal direction X of the mounting hole H and fixed to the mounting hole H.

  In the band clip 100, the blade portions 113A and 113B are connected by a thin and flexible central connecting portion 116. Therefore, a tensile force in the short direction Y acts on the wire harness 120, and the blade portions 113A and 113B. Even if a force that inclines to one side in the short direction is applied, the inclination of the blade portion is suppressed by the pulling force in the return direction by the central connecting portion 116, and the locking force to the mounting hole by the locking claw of the blade portion is reduced. Can be held.

JP 2010-151174 A

  However, as shown in FIG. 10A, when the clip 105 of the band clip 100 is pushed into the mounting hole H, one of the blade portions 113A and 113B (113A in the drawing) is positioned in relation to the mounting hole H. The locking claws 114A and 114B (114A in the drawing) may be pushed too much by the peripheral edge of the mounting hole H or a human finger or the like during mounting. In this case, the central side ends of the blade portions 113A and 113B are only connected by the flexible central connection portion 116, and there is no wall such as a column with which the blade portions abut. As shown, the connecting portion Z with the bridging portion 112 becomes a bending point, and the blade portion 113A tends to fall inward. When the inward tilt is increased, plastic deformation occurs from the dotted line position shown in FIG. 10C to the solid line position, and the locking claw 114A is difficult to return. As a result, the locking claw 114A is not hung around the periphery of the mounting hole H of the vehicle body panel P, and the band clip 100 cannot be locked to the vehicle body panel P.

  If the engaging claws 114A and 114B are built up so that they can be hooked on the periphery of the mounting hole H even if the engaging claws are deformed, the problem can be solved. This increases the insertion force of the clip, and there is a problem that the mounting workability is deteriorated.

  The present invention has been made in view of the above problems, and when inserting and locking the clip of the band clip into the mounting hole of the vehicle body panel, even if the locking claw is pushed too much and deforms inward, the insertion force is increased. It is an object to increase the locking reliability of the band clip by ensuring that the locking claw is securely hooked around the periphery of the mounting hole without increasing it.

In order to solve the above-mentioned problems, the present invention provides a bridging portion that connects the protruding ends of a pair of support columns protruding from a wire harness mounting portion provided with a fastening band, on both sides in the short direction and on the left and right in the longitudinal direction. A pair of blade portions are projected in a folded manner toward the base side on the wire harness mounting portion side, and two or more steps of locking claws are provided on the outer surface of each blade portion. In the band clip, which is provided by sequentially protruding outwardly, and any one of the upper and lower stages of the locking claws is locked to the periphery of the mounting hole of the vehicle body.
A thin protrusion having flexibility is projected from the protruding end of the lowermost locking claw, and the protruding end of the protrusion protrudes outward from the protruding end of the adjacent upper locking claw. A band clip for a wire harness is provided.

As described above, if the protrusion is provided so as to protrude from the protruding end of the lowermost locking claw, even if the blade portion is pushed inward at the periphery of the mounting hole and plastic deformation occurs, the protrusion does not It is possible to lock both the engaging claws of the blades facing each other on the periphery of the mounting hole, and to improve the locking reliability. In addition, since the protrusion is thin and easily bent, the insertion force of the clip into the mounting hole is not increased.
Moreover, by making the latching claws into a plurality of stages of two or more stages, it is possible to correspond to the plate thickness of the vehicle body provided with the mounting holes. When the upper locking claw is locked to the periphery of the mounting hole than the locking claw provided with the lowermost projection, the projection protruding from the lowermost step is thin and easy to bend. The upper locking claw can be locked to the periphery of the mounting hole by being deformed so as to be bent by the contact.

  The band clip is resin-molded with polypropylene or the like, and the protrusion protruding from the lowermost locking claw is thinned so that it can be easily deformed, and the thickness is gradually reduced toward the tip.

  Three pairs of upper and lower locking claws are provided on the outer surfaces of the pair of blade portions, and the locking claws are provided with V-shaped cuts on the outer surface of the blade portions to form triangular locking claws. The lower end is projected from the inner end of the locking surface.

The wire harness mounting part projects a dish part on the outer surface of the main body part projecting the fastening band, projects the pair of column parts from the bottom surface of the dish part, and the pair of blade parts mutually It is preferable that the near inner end and the dish part side end are connected by a central connecting part.
Providing the above-described central connecting portion makes it difficult to pull out the clip from the mounting hole when a tensile force in the short axis direction acts on the clip.

  As described above, the band clip according to the present invention is provided with a thin protrusion that easily bends at the protruding end of the lowermost locking claw among the upper and lower locking claws provided on the pair of blade portions, and the protruding amount Therefore, even when the blade part is pushed inside the mounting hole and the locking claw does not reach the periphery of the mounting hole, the protrusion can be applied to the peripheral edge of the mounting hole. Can increase the sex. In addition, since the protrusion is easily bent, it is possible to prevent the insertion force of the clip from increasing, and when the upper locking claw is locked to the periphery of the mounting hole, the protrusion is bent and the upper locking force is increased. Does not obstruct the locking of the pawl.

It is a front view of the band clip of 1st Embodiment of this invention. It is a perspective view which shows the clip of the band clip of FIG. It is principal part expansion explanatory drawing of the said clip. It is a cross-sectional view of the clip. (A) is a front view of the state in which the band clip is attached to the wire harness, (B) is a side view, and (C) is a drawing showing a state in which the clip is locked to the mounting hole of the vehicle body. It is principal part expansion explanatory drawing when a clip is inserted in the attachment hole in position shift. It is principal part expansion explanatory drawing which shows the state which inserted the clip in the attachment hole of the thick vehicle body panel. It is a cross-sectional view of the clip of the band clip of the second embodiment of the present invention. (A)-(C) are drawings which show a prior art example. (A)-(C) are drawings which show the problem of a prior art example.

Hereinafter, a band clip according to an embodiment of the present invention will be described with reference to the drawings.
1st Embodiment is shown in FIG. 1 thru | or FIG.
The band clip 1 is made of a resin molded product such as polypropylene, and the wire harness mounting portion 2 and the clip 3 are integrally formed.

  The wire harness mounting portion 2 includes a rectangular tubular main body 5 provided with a band through hole 5a and a fastening band 6 protruding from the lower portion of the main body 5 on the outlet side of the band through hole 5a. The locking groove 6a is provided in a sawtooth shape. As shown in FIG. 5, the locking piece 5b is wound around the wire group W constituting the wire harness W / H, inserted from the entrance of the band through hole 5a, penetrated, and protruded from the inner surface of the band through hole 5a. It locks in the stop groove 6a and is fixed to the wire harness W / H.

  The clip 3 includes a plate portion 10 that protrudes from the outer surface of the main body 5 with a curved outer periphery, a pair of left and right support columns 11 and 12 that protrude from the center of the bottom surface of the plate unit 10, and the support columns 11 and 12. The bridging portion 13 having the projecting ends connected to each other, and the pair of blade portions 14 and 15 on the both sides of the bridging portion 13 in the lateral direction (width direction) Y and to the left and right of the longitudinal direction X Projected in a folded shape toward the side. Locking claws 16 (16-1 to 16-3) and 17 (17-1 to 17-3) are provided on the outer surface of each of the blade portions 14 and 15 in three upper and lower stages.

  Each of the locking claws 16 and 17 has a triangular locking claw by cutting out the inclined outer surfaces of the blade portions 14 and 15 into a V shape, and the lower surface of the locking claw 16 (17) is an oval shape of the vehicle body panel P. It is set as the latching surface hooked on the peripheral edge of the long side which the attachment hole H of this is opposed to.

  In the upper and lower three-stage locking claws 16 (16-1 to 16-3) and 17 (17-1 to 17-3), the top ends of the upper-stage locking claws 16-1 and 17-1 are most outward. The protrusions of the second-stage locking claws 16-2 and 17-2 and the lowermost third-stage locking claws 16-3 and 17-3 are sequentially reduced in amount. And the lower end parts 18 and 19 are extended downward from the inner ends of the hooking surfaces 16-3s and 17-3s of the third stage locking claws 16-3 and 17-3.

  As shown in FIG. 3, projections 20 and 21 projecting outward from the projecting ends of the third-stage locking claws 16-3 and 17-3 at the lowest stage of the blade portions 14 and 15 are provided. The protrusions 20 and 21 are made thin so as to be flexible so that they can be easily bent, and gradually become thinner toward the tip. The protruding amount L of the protrusions 20 and 21 is projected from the protruding ends of the upper second stage locking claws 16-2 and 17-2. It does not protrude from the protruding end of 17-1.

The pair of left and right support columns 11 and 12 have a semicircular cross section that fits inside the oval mounting hole H on the short side. The blade portions 14 and 15 are disposed between inner surfaces 11a and 12a formed of flat surfaces of the pair of left and right support columns 11 and 12 which face each other.
As described above, the blade portions 14 and 15 are phased to the left and right in the longitudinal direction X, and a gap is formed between adjacent inner edges, and one blade portion 14 is brought close to one strut portion 11, The other blade portion 15 is brought close to the other strut portion 12.

As shown in FIG. 5, the band clip 1 having the above-described configuration is wound around the wire group W constituting the wire harness W / H, and then passed through the band through hole 5a of the main body 5 and then into the band through hole 5a. Thus, the locking piece is locked in the locking groove 6a and fixed to the wire harness W / H.
The wire harness W / H is routed along the routing route of the vehicle body, the clip 3 of the band clip 1 is pushed into the oval mounting hole H provided in the vehicle body panel P from the bridge portion 13 side, and the blade portion The locking claws 16 and 17 of 14 and 15 are locked and fixed to the inner peripheral edge of the mounting hole H.

  In detail, in this embodiment, since the plate | board thickness of the vehicle body panel P is thin, if the precision of the insertion position to the attachment hole H of the clip 3 is good, as shown in FIG.5 (C), as shown in FIG. The locking claw 16-3 of the eye is locked to the left side of the one long side ha opposite to the mounting hole H, and the locking claw 17-3 is locked to the right side of the other long side hb of the mounting hole H facing each other. To do. Moreover, the support | pillar parts 11 and 12 fit in along the inner surface of the circular-arc part by the side of the short side of the right and left of the attachment hole H.

  When the insertion position of the clip 3 is displaced from the mounting hole H, one of the blade portions 14 and 15, for example, the locking claw 16 of the blade portion 14 is strongly pressed against the peripheral edge of the mounting hole H, and the pressure is set from the set pressure. It becomes too much. Therefore, the third-stage locking claw 16-3 to be hooked on the periphery of the mounting hole H is plastically deformed inward of the mounting hole H and is not hooked on the peripheral edge of the mounting hole H.

  However, as shown in FIG. 6, since the protrusion 20 protrudes from the protruding end of the locking claw 16-3, the protrusion 20 is caught by the vehicle body panel P at the periphery of the mounting hole H, and the blade portion 14 is attached to the vehicle body panel. Can be locked to P. Since the locking claw 17-3 of the other blade portion 15 is not excessively pushed at the periphery of the mounting hole H, the blade portion 15 and the locking claw 17-3 are locked to the periphery of the mounting hole H of the vehicle body panel P. In addition, the projection 21 protruding from the tip of the locking claw 17-3 is also locked to the vehicle body panel P.

  As described above, the projection 20 at the tip of the locking claw 16-3 at the opposite position, the locking claw 17-3 and the projection 21 are locked to the periphery of the mounting hole H, and the clip 3 is stabilized to the vehicle body panel P. Can be locked in posture.

  The body panel P is relatively thick, and the second level locking claws 16-2 and 17-2 or the upper level locking claws 16-1 and 17-1 are locked to the vehicle body panel P. In this case, the protrusions 20 and 21 protruding from the protruding ends of the lower locking claws 16-3 and 17-3 become an obstacle. In this case, as shown in FIG. 7, when the projection 20 (21) is pushed by the inner peripheral surface Hs of the mounting hole H of the vehicle body panel P, it is bent downward and the locking claws 16-3 (17-3) and It is sandwiched between the inner peripheral surface Hs. As a result, the locking claw 16-2 (17-2) can be locked to the periphery of the mounting hole H, and the protrusion 20 in which the gap between the mounting hole H and the locking claw 16-3 (17-3) is bent. (21), the clip 3 is closed, and the clip 3 can be locked to the vehicle body panel P without rattling.

FIG. 8 shows a band clip according to the second embodiment.
In the band clip of the second embodiment, a central connecting portion 30 that connects the inner ends of the blade portions 14 and 15 is provided. Also, the locking claws of the blade portions 14 and 15 are upper and lower two-stage 16-2, 16-3, 17-2 and 17-3, and the protrusions 20 and 21 are provided on the lower locking claws 16-3 and 17-3. Provided. Since other configurations and operational effects are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 Band clip 2 Wire harness attachment part 3 Clip 5 Main body 6 Fastening band 10 Dish part 11, 12 Support | pillar part 14, 15 Blade | wing part 16 (16-1 to 16-3), 17 (17-1 to 17-3) Claw 20, 21 Protrusion W / H Wire harness P Body panel H Mounting hole

Claims (2)

A pair of blade portions are connected to the bridging portion connecting the projecting ends of the pair of support columns projecting from the wire harness mounting portion provided with the fastening band, and phased in the lateral direction on both sides and in the longitudinal direction. Projected in a folded shape toward the base side on the mounting part side, provided with two or more steps of locking claws on the outer surface of each blade part, and these locking claws sequentially project the upper level locking claws outward. In a band clip that is provided and that locks one of the upper and lower multi-stage locking claws to the periphery of the mounting hole of the vehicle body,
A thin protrusion having flexibility is projected from the protruding end of the lowermost locking claw, and the protruding end of the protrusion protrudes outward from the protruding end of the adjacent upper locking claw. Band clip for wire harness.   Three pairs of upper and lower locking claws are provided on the outer surfaces of the pair of blade portions, and the locking claws are provided with V-shaped cuts on the outer surface of the blade portions to form triangular locking claws. The band clip for a wire harness according to claim 1, wherein a lower end portion is projected from an inner end of the locking surface.

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