JP2013113318A - Clip and wiring harness with clip - Google Patents

Abstract

Provided are a clip and a wire harness with a clip that prevent rattling from a panel of an automobile or the like.
A clip (2) includes a body part (4) overlaid on a panel (12), a locking part (5) standing from the body part (4) and inserted into a mounting hole (13) and locked to the mounting hole (13), A pressing piece 7 that extends from the base end portion of the locking portion 5 and is inclined toward the distal end portion of the locking portion 5 and presses the panel 12. The locking piece 6 is provided upright from the locking portion 5 and locked with the mounting hole 13 of the panel 12, and the pressing piece 7 is connected to the free end 6 a side of the locking piece 6. A cutout portion 7 a is provided, and the locking piece 6 is formed to extend between the cutout portion 7 a and the main body portion 4.
[Selection] Figure 1

Description

  The present invention relates to a clip formed so as to be latchable with a mounting hole of a panel, and a wire harness with a clip integrally formed on an electric wire through which the clip is inserted into the mounting hole.

  Various electronic devices are mounted on automobiles. Wire harnesses are used as means for transmitting electric power, control signals, and the like from a power source such as a battery to these electronic devices.

  The wire harness is routed in a required routing form on a panel constituting a vehicle body such as an automobile. When the wire harness is routed across the back door and the passenger compartment, the grommet is fitted into the mounting hole of the inner panel of the back door, and the grommet is inserted into the insertion hole of the grommet fitted into the mounting hole. The wire harness is inserted and routed.

  As described above, various proposals have been proposed in which a grommet is fitted into a mounting hole of a panel and a wire harness is routed through the grommet (see, for example, Patent Document 1 and Patent Document 2).

  In the conventional wire harness shown in Patent Document 1, the grommet fitted into the mounting hole of the panel is formed of an elastic material such as natural rubber or synthetic rubber. There was a problem that the frictional force was increased, and the insertion resistance when the grommet was fitted into the mounting hole was increased.

  In addition, the conventional wire harness increases the insertion resistance when the grommet is fitted into the mounting hole, so that it takes time and effort to fit the grommet into the mounting hole, increasing the burden on the worker. There was a problem.

  In addition, the conventional wire harness exhibits excellent water stop performance because the grommet is formed of an elastic material, but a back door that does not require a water stop function because a liquid such as water is naturally discharged. When the grommet was used at the location, there was a problem of excessive performance.

  Further, the conventional wire harness has a problem that the cost of the wire harness increases because rubber or synthetic rubber grommets are expensive.

  In the conventional wire harness shown in Patent Document 2, since the grommet is formed of a synthetic resin having no elasticity or elasticity, the insertion resistance when fitting the grommet into the mounting hole is reduced. Since there is no elasticity of the insertion hole of the electric wire which comprises a wire harness, the said insertion hole is formed larger diameter than the external shape of a wire harness so that a wire harness can be easily inserted in an insertion hole. For this reason, there existed a problem that a grommet enlarged.

  Further, the conventional wire harness has a problem that the appearance is not good because the insertion hole is formed in a large diameter.

  In order to solve the above-mentioned problem, the applicant adopts a fixing structure for a wire harness fixing device (see, for example, Patent Document 3) studied by the applicant, and is inexpensive, small, and excellent in appearance. The present inventors have earnestly studied a wire harness with a clip in which the clip is integrally formed with an electric wire.

  The clip which the applicant has earnestly researched is a main body part that is overlapped with the panel, a locking part that is erected from the main body part and that is inserted into the mounting hole of the panel and locked with the mounting hole, A ring-shaped pressing portion that is provided in a base end portion of the locking portion, is formed in a ring shape, and presses the panel. In addition, the clip-attached wire harness that the applicant has earnestly researched has the above-described clip integrally formed with the electric wire constituting the wire harness.

  Since the clip configured in this way is made of a synthetic resin that is cheaper than a grommet made of rubber or synthetic rubber, the clip can be provided at a low cost, and the wire harness with a clip is inexpensive. An increase in the cost of the wire harness can be suppressed.

  Further, since the clip-attached wire harness is integrally formed with the electric wire constituting the wire harness, an insertion hole for inserting the wire harness is not necessary, and the clip can be miniaturized. For this reason, the wire harness with a clip which was small and excellent in the external appearance can be provided.

JP 2005-174858 A JP 2002-369347 A JP 2006-31458 A

  However, since the clip and the wire harness with clip that the applicant has earnestly researched are formed integrally with the mold, the locking portion is configured so that the clip can be removed from the mold. Between the free end portion of the locking piece and the ring-shaped pressing portion, a die-cutting gap in a direction substantially parallel to the locking direction of the clip is provided. Furthermore, when the locking piece is locked to the peripheral edge of the mounting hole, the locking piece is displaced from the inner peripheral surface of the mounting hole toward the peripheral edge, so that the locking piece The distance between the free end and the main body is increased.

  For this reason, when the clip is locked in the mounting hole of the panel, between the free end of the locking piece and the peripheral edge of the mounting hole, or the edge of the ring-shaped pressing portion and the panel There was a problem that a slight gap was generated between the clip and the clip slightly swayed in the locking direction of the clip.

  The present invention aims to solve such problems. That is, an object of the present invention is to provide a clip and a wire harness with a clip that prevent rattling with a panel of an automobile or the like.

  In order to solve the above-mentioned problems and achieve the object, the clip according to the present invention described in claim 1 is a clip that is locked in a mounting hole of a panel, and the clip is overlapped with the panel. A locking portion that is erected from the main body portion and is inserted into the mounting hole and locked to the mounting hole, and is extended from a base end portion of the locking portion to a distal end portion of the locking portion. And a pressing piece that is inclined toward the panel and presses the panel, and the locking portion is provided with a locking piece that is erected from the locking portion and locked to the mounting hole of the panel. The pressing piece is provided with a cutout portion formed by cutting out the free end side of the locking piece, and the locking piece extends between the cutout portion and the main body portion. It is characterized by being formed.

  In the clip of the present invention described in claim 2, the main body portion is provided with a protruding portion that protrudes toward the panel, and the protruding portion is provided on the notch portion side. It is a feature.

  The clip-attached wire harness of the present invention described in claim 3 is a clip-attached wire harness in which the clip according to claim 1 or claim 2 is formed integrally with an electric wire, and the electric wire includes the clip. It is characterized by being provided through.

  According to the clip of the present invention described in claim 1, the notch portion in which the free end portion side of the locking piece is notched is provided in the pressing piece, and is extended to between the notch portion and the main body portion. Since the formed locking piece is provided, the free end portion of the locking piece can be arranged on the notch portion side, and the free end portion of the locking piece can be extended to the main body side from the notch portion. it can.

  For this reason, the front-end | tip part of a press piece and the free end part of a latching piece overlap mutually without contact. Therefore, when the clip is locked in the mounting hole of the panel, the pressing force of the pressing piece that presses the panel is greatly improved, and the free end of the locking piece is strongly pressed against the peripheral portion of the mounting hole. Can do. Therefore, rattling between the clip and the panel can be reliably prevented.

  According to the clip of the present invention described in claim 2, since the projecting portion projecting toward the panel is provided in the main body portion and the projecting portion is provided on the notch portion side, the clip is locked in the mounting hole of the panel. When this is done, the gap between the main body and the panel can be reduced by the protrusion. For this reason, the wobbling of the clip can be greatly suppressed.

  Moreover, since the protrusion part was provided in the notch part side, interference with this protrusion part and a press piece can be prevented, and a clip can be die-cut from a metal mold | die. For this reason, a clip can be shape | molded with a common metal mold | die.

  Thus, since the clip can be formed with a general mold, an increase in cost can be suppressed.

  According to the wire harness with a clip according to the third aspect of the present invention, since the above-mentioned clip is integrally formed with the electric wire and the electric wire penetrates the clip, the play of the wire harness with respect to the panel is reliably ensured. Can be prevented.

  Moreover, since the clip-attached wire harness of the present invention can integrally form the clip on the electric wire using a general mold, an increase in cost can be suppressed.

It is a perspective view for demonstrating the structure of the wire harness with a clip concerning one Embodiment of this invention. It is a perspective view which shows the latching piece side of the wire harness with a clip shown in FIG. It is a side view which shows the side of the wire harness with a clip shown in FIG. (A) is a side view on the locking piece side, and (B) is a side view on the bulging portion side. It is sectional drawing which shows the principal part of the metal mold | die which shape | molds the wire harness with a clip. It is a perspective view which shows the lower mold | type of the metal mold | die which shape | molds the wire harness with a clip. It is explanatory drawing for demonstrating the state by which the wire harness with a clip was latched by the panel. (A) is a side view from the locking piece side, (B) is a cross-sectional view taken along the line II-II.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6.

  As shown in FIGS. 1 and 2, the wire harness with a clip according to an embodiment of the present invention can be locked to the electric wire 3 inserted into the attachment hole 13 of the panel 12 of an automobile or the like and the attachment hole 13. A clip 2 formed and integrally formed with the electric wire 3.

  As shown in FIG. 6B, the electric wire 3 includes a conductive core wire 3a and an insulating covering portion 3b. The core wire 3a is formed by twisting a plurality of conductive metal conductors. The covering portion 3b covers the core wire 3a and is formed of an electrically insulating synthetic resin such as polyvinyl chloride resin. In addition, the core wire 3a may be comprised from one core wire. The electric wire 3 may be a bundle of a plurality of electric wires, or an electric wire bundle formed by bundling a plurality of electric wires with an adhesive tape such as a wire harness tape or a binding band.

  The clip 2 according to an embodiment of the present invention is provided on the same axis as the electric wire 3. The clip 2 is integrally formed with the electric wire 3. The clip 2 includes a main body 4 that is stacked on the panel 12, a locking part 5 that is erected from the main body part 4 and that can be locked to the mounting hole 13, and a base end of the locking part 5 And a pressing piece 7 that is provided in the section and presses the panel 12. The clip 2 is formed of a synthetic resin such as a polypropylene resin having flexibility.

  The main body 4 is formed in a thin plate-like circular shape whose diameter is increased in the circumferential direction of the electric wire 3. The main body 4 is formed larger in diameter than the mounting hole 13 of the panel 12. The main body 4 is provided with a protrusion 10 that protrudes toward the panel 12 when the clip 2 is attached to the attachment hole 13.

  As shown in FIGS. 3A and 3B, the protruding portion 10 is formed to protrude from both end sides of the lower surface of the main body portion 4. The contact protrusion 10 is provided on the side of a notch 7a of the pressing piece 7 described later. The protruding portion 10 is provided on the free end portion 6a side of the locking piece 6 described later, and is formed with a protruding amount that protrudes to the vicinity of the free end portion 6a.

  For this reason, when the clip 2 is locked in the mounting hole 13, the gaps between the projections 10 and 10 provided on both ends of the lower surface of the main body 4 and the panel 12 become slight, The wobbling in the direction substantially orthogonal to the electric wire 3 and the direction connecting the contact protrusions 10 and 10 is prevented.

  Moreover, since the protrusion parts 10 and 10 are provided in the notch part 7a and 7a side, interference with the said protrusion parts 10 and 10 and the said press piece 7 can be prevented. For this reason, the clip 2 integrally formed with the electric wire 3 can be punched from a mold 21 (shown in FIG. 4) described later.

  In addition, since the overstroke (gap of the insertion direction to the attachment hole 13) for latching the clip 2 to the panel 12 is required between the main-body part 4 and the panel 12, the protrusion parts 10 and 10 and a panel In the present invention, in order to prevent the clip 2 from wobbling, the protrusions 10 and 10 are directed toward the panel 12 so that the gap is as small as possible. It is protruding.

  As shown in FIGS. 1 and 2, the locking portion 5 is erected along the electric wire 3 from the central portion of the main body portion 4. The locking part 5 is formed in a quadrangular prism shape. The locking part 5 includes a bulging part 9 whose base end side is bulged, and a locking piece 6 extending from the side surface of the locking part 5.

  The bulging portion 9 is provided on each of two parallel side surfaces of the locking portion 5 formed in a quadrangular prism shape. The bulging portion 9 bulges in a direction substantially orthogonal to each of the two side surfaces, and is provided on both ends of the two side surfaces in a direction substantially orthogonal to the electric wire 3. The tip of the bulging portion 9 is formed in an arc shape along the circular shape of the inner peripheral surface of the mounting hole 13 of the panel 12.

  Since the bulging portion 9 is formed in an arc shape along the circular shape of the inner peripheral surface of the mounting hole 13, the clip 2 locked to the mounting hole 13 of the panel 12 is connected to the bulging portion. 9 can be prevented from wobbling in the bulging direction.

  As shown in FIGS. 1 and 3B, the locking pieces 6 are respectively provided on the other two side surfaces adjacent to the two side surfaces of the locking portion 5 provided with the bulging portion 9. Yes. The locking piece 6 is formed extending toward the main body 4. The locking pieces 6 are formed so as to be gradually separated from each other toward the main body portion 4. The locking piece 6 is formed to be swingable, and the swinging direction of the locking piece 6 is formed in a direction intersecting the longitudinal direction of the electric wire 3. The locking piece 6 is formed such that a free end portion 6 a as a tip portion thereof is disposed between a tip portion 7 b of a pressing piece 7 described later and the main body portion 4. The free end portion 6 a is provided with a locking step portion that locks with the peripheral edge portion of the mounting hole 13 of the panel 12.

  For this reason, an overlapping distance L is formed in which the free end portion 6a of the locking piece 6 and the tip end portion 7b of the pressing piece 7 overlap each other in the longitudinal direction of the electric wire 3 in a non-contact manner. Therefore, when the clip 2 is locked in the mounting hole 13 of the panel 12, the pressing force of the pressing piece 7 that presses the panel 12 is greatly improved, and the free end portion 6 a of the locking piece 6 is The locking step portion is strongly pressed against the peripheral edge portion of the mounting hole 13. Therefore, rattling between the clip 2 and the panel 12 is reliably prevented.

  As shown in FIG. 3A, the pressing piece 7 is formed to extend from the base end portion of the locking portion 5. The pressing piece 7 is formed to be inclined toward the distal end portion of the locking portion 5. As shown in FIG. 2, the pressing piece 7 extends in the bulging direction of the bulging portion 9 of the locking portion 5. As shown in FIG. 3A, the pressing piece 7 is provided with a notch 7 a that is formed by notching the free end 6 a side of the locking piece 6 of the locking part 5. As shown in FIG. 2, the pressing piece 7 has a tip portion 7 b formed in an arc shape along the main body portion 4 formed in a circular shape.

  The tip portion 7b is formed in an arc shape that draws a circular shape having a diameter larger than the hole diameter of the mounting hole 13 of the panel 12. As shown in FIGS. 3A and 3B, the distal end portion 7 b is provided closer to the proximal end portion of the locking piece 6 than the free end portion 6 a of the locking piece 6.

  For this reason, an overlap distance L is formed in which the distal end portion 7b of the pressing piece 7 and the free end portion 6a of the locking piece 6 overlap each other in the longitudinal direction of the electric wire 3 in a non-contact manner. Therefore, when the clip 2 is locked in the mounting hole 13 of the panel 12, the pressing force of the pressing piece 7 that presses the panel 12 is greatly improved, and the free end portion 6 a of the locking piece 6 is The locking step portion is strongly pressed against the peripheral edge portion of the mounting hole 13. Therefore, rattling between the clip 2 and the panel 12 is reliably prevented.

  As shown in FIG. 3A, the notch portion 7a is formed by cutting the pressing piece 7 formed in a circular shape into a linear shape so as not to hinder the rocking of the locking piece 6. Yes. For this reason, the pressing piece 7 has a rectangular shape in which the notches 7a and 7a are long sides and the tip portions 7b and 7b are short sides.

  Next, the metal mold | die 21 with which the wire harness 1 with a clip comprised as mentioned above is shape | molded is demonstrated.

  As shown in FIG. 4, the mold 21 is a horizontal mold and includes an upper mold 22 and a lower mold 23. The upper mold 22 and the lower mold 23 are each provided with a linear cavity 25 formed along the outer shape of the electric wire 3 and a clip cavity 24 formed along the outer shape of the clip 2. ing. The mold 21 may be a vertical split mold.

  As shown in FIG. 5, the lower mold 23 has a linear cavity 25 and a clip cavity 24 formed upward. The linear cavities 25 are provided at both ends of the opposing surfaces of the upper mold 22 and the lower mold 23, and are provided with outlets 27 through which the electric wires 3 are led out of the mold 21. The clip cavity 24 includes a pressing piece cavity 24a in which the pressing piece 7 is formed, and a protruding portion cavity 24b in which the protruding portion 10 is formed.

  Since the pressing piece cavity 24a and the protruding portion cavity 24b are formed so that the molded pressing piece 7 and the protruding portion 10 can be punched, the clip 2 formed integrally with the electric wire 3 is punched from the mold 21. be able to. For this reason, the wire harness with a clip can be shape | molded with a common metal mold | die, and cost can be restrained cheaply compared with the case where a special metal mold | die is used.

  The mold 21 may be one in which a plurality of the clip cavities 24 are provided on the filament cavities 25. In this case, the mold 21 has a plurality of clip cavities 24, and when the clip-attached wire harness 1 is attached to the panel 12, the plurality of clips 2 are locked in the plurality of attachment holes 13 of the panel 12, respectively. It is placed in a possible position. That is, the plurality of clips 2 are provided at positions where the relative positions with respect to the electric wires 3 can be locked in the plurality of mounting holes 13 of the panel 12.

  In the present invention, the plurality of clips 2 are provided at positions where the relative positions with respect to the electric wires 3 can be locked in the mounting holes 13 of the panel 12. In the clip-attached wire harness 1 obtained by injection molding of the molten resin into the clip cavity 24 maintained at the relative position when the harness 1 is designed, the relative positions of the plurality of clips 2 with respect to the electric wires 3 are Excluding errors that occur during injection molding, it means that the position is determined at the time of design.

  Next, a method of attaching the wire harness with clip 1 formed by the above-described mold 21 to the attachment hole 13 of the inner panel 12 of the back door of an automobile or the like will be described.

  First, the electric wire 3 and the locking portion 5 of the wire harness with clip 1 are inserted into the mounting hole 13 of the inner panel 12 of the back door. At this time, the free end portions 6a of the locking pieces 6 are elastically deformed in a direction approaching each other.

  Next, when the free ends 6 a of the locking pieces 6 pass through the mounting holes 13, the respective free ends 6 a of the locking pieces 6 are displaced in directions away from each other by elastic recovery force. And as shown to FIG. 6 (A) and FIG. 6 (B), while the front-end | tip part 7b of the press piece 7 presses the inner panel 12, the latching step part of each free end part 6a of the latching piece 6 is shown. However, it is pressed against the peripheral edge of the mounting hole 13 and locked.

  For this reason, in the wire harness with clip 1, the pressing piece 7 that presses the inner panel 12 presses the locking step portion of each free end portion 6 a of the locking piece 6 against the peripheral portion of the mounting hole 13. A gap is prevented from occurring between the peripheral edge of the mounting hole 13 and the locking piece 6. Therefore, rattling between the clip 2 and the inner panel 12 can be reliably prevented.

  According to the clip 2 according to this embodiment, the clip 2 is overlapped with the panel 12, and the clip 2 is erected from the body 4 and is inserted into the attachment hole 13 to be engaged with the attachment hole 13. A locking piece 5, and a pressing piece 7 that extends from the base end portion of the locking portion 5 and is inclined toward the distal end of the locking portion 5 and presses the panel 12. The locking portion 5 is provided with a locking piece 6 standing from the locking portion 5 and locked to the mounting hole 13 of the panel 12. The pressing piece 7 has the locking piece 6 of the locking piece 6. A notch portion 7 a is formed by notching the free end portion 6 a side, and the locking piece 6 is formed to extend between the notch portion 7 a and the main body portion 4.

  In this way, the notch 7a in which the free end 6a side of the locking piece 6 is cut out is provided in the pressing piece 7, and the locking piece formed to extend between the notch 7a and the main body 4 is formed. Since the piece 6 is provided, the free end portion 6a of the locking piece 6 can be arranged on the cutout portion 7a side, and the free end portion 6a of the locking piece 6 extends to the main body portion 4 side from the cutout portion 7a. can do.

  For this reason, the front-end | tip part of the press piece 7 and the free end part 6a of the latching piece 6 overlap with each other in non-contact. Therefore, when the clip 2 is locked in the mounting hole 13 of the panel 12, the pressing force of the pressing piece 7 that presses the panel 12 is greatly improved, and the free end 6 a of the locking piece 6 is connected to the mounting hole 13. It can be pressed firmly against the peripheral edge. Therefore, rattling between the clip 2 and the panel 12 can be reliably prevented.

  Moreover, according to the clip 2 concerning this embodiment, the main-body part 4 is provided with the protrusion part 10 which protrudes toward the said panel 12, and the said protrusion part 10 is provided in the said notch part 7a side. Therefore, when the clip 2 is locked in the mounting hole 13 of the panel 12, the gap between the main body 4 and the panel 12 can be reduced by the protrusion 10. For this reason, the wobbling of the clip 2 can be significantly suppressed.

  Moreover, since the protrusion part 10 was provided in the notch part 7a side, interference with this protrusion part 10 and the press piece 7 can be prevented, and the clip 2 can be die-cut from a metal mold | die. For this reason, the clip 2 can be shape | molded with a common metal mold | die.

  Thus, since the clip 2 can be molded with a general mold, an increase in cost can be suppressed.

  Further, according to the clip-attached wire harness 1 according to the present embodiment, the above-described clip 2 is integrally formed with the electric wire 3 and the electric wire 3 penetrates the clip 2. Can be reliably prevented.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Wire harness with a clip 2 Clip 3 Electric wire 4 Main body part 5 Locking part 6 Locking piece 6a Free end part 7 Pressing piece 7a Notch part 7b Tip part 10 Protruding part 12 Inner panel (panel)
13 Mounting hole L Overlap distance

Claims (3)

A clip to be locked in the mounting hole of the panel,
The clip is overlapped with the panel, a main body part, a locking part standing from the main body part and inserted into the mounting hole and locked to the mounting hole, and a base end part of the locking part A pressing piece that is extended and inclined toward the tip of the locking portion and presses the panel,
The locking portion is provided with a locking piece standing from the locking portion and locked to the mounting hole of the panel,
The pressing piece is provided with a cutout portion formed by cutting out the free end side of the locking piece, and
The clip, wherein the locking piece is formed to extend between the notch and the main body. The main body is provided with a protruding portion that protrudes toward the panel, and
The wire harness with a clip according to claim 1, wherein the protruding portion is provided on the notch portion side. The clip according to claim 1 or claim 2 is a wire harness with a clip formed integrally with an electric wire,
A wire harness with a clip, wherein the electric wire is provided through the clip.

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