JP4317192B2 - Grommet - Google Patents

Description

  The present invention relates to a grommet, and more particularly to a grommet used for wiring a vehicle door harness, for example.

  Conventionally, as a grommet used for wiring a vehicle door harness, a grommet described in Japanese Patent Laid-Open No. 8-318796 is known. As shown in FIG. 11, the grommet 1 is attached to a side surface portion 21 on the hinge mounting portion side of the door inner panel in the door 2 of the vehicle. The grommet 1 includes a substantially rectangular grommet main body 11, a cylindrical portion 12 that protrudes outward from the grommet main body 11 and allows the door harness 3 to pass therethrough, and is insert-molded into the grommet main body 11. It consists of a mounting plate 13 made of synthetic resin for mounting on the side surface portion 21. As shown in FIG. 12, the mounting plate 13 includes four claw-like clips 13 </ b> A that protrude from the inside of the grommet body 11 toward the outside of the back surface. On the other hand, the side surface portion 21 on the door 2 side is provided with four locking holes 21A into which the clips 13A are inserted and locked. Further, a pair of lid portions 11A and 11A are formed on the back side of the grommet body 11, and the door harness 3 is accommodated by closing the lid portions 11A and 11A in a state where the door harness 3 is disposed. .

  And in the state which stored the door harness 3 in this way, as shown in FIG. 11, the clip 13A of the grommet 1 is inserted in the locking hole 21A formed in the side part 21 by the side of the door 2, and the grommet 1 is made into a door. It is fixed to 2 side. As shown in FIGS. 11 and 13, a weather strip 4 is provided along the side surface portion 21 so as to pass over the fixed grommet 1.

  However, in such a conventional grommet 1, it is a part of the attachment portion 13 with the door harness 3 interposed between the attachment portion 13 made of synthetic resin and the lid portion 11A on the grommet body 11 side. Since the clips 13 </ b> A to 13 </ b> A are locked in the locking holes 21 </ b> A formed in the side surface portion 21 of the door 2, there is a problem that the protruding amount of the clip 13 </ b> A changes depending on the storage state of the door harness 3. there were. For this reason, the coupling force between the clip 13 </ b> A and the locking hole 21 </ b> A is unstable. For example, when the door harness 3 is in a crushed state, the protruding amount of the clip 13 </ b> A increases, There is a problem of wobbling.

  Further, in such a grommet 1, since the plurality of (four) clips 13A are engaged with the side surface portion 21, wobbling occurs if the clip 13A is not reliably engaged with the engagement hole 21A even at one location. There was a problem that it was generated and moisture easily entered. For this reason, skill is required for the assembly work of the grommet 1, and it has been difficult to perform reliable assembly quickly and easily.

  Furthermore, in such a grommet 1, it is necessary to process and form a plurality of locking holes 21A at positions corresponding to the clips 13A of the grommet 1 on the side surface portion 21 of the door 2, and the processing process on the door 2 side is complicated. There was a problem of becoming.

  Moreover, in the conventional grommet 1, since the door harness 3 is not tape-fixed to the grommet 1 side, variations in the dimensions of the door harness occur, and the door harness 3 is likely to be loosened or pulled. there were. Such loosening of the door harness 3 causes biting when the door is opened and closed, and pulling the door harness 3 causes disconnection. If the door harness 3 is taped and fixed to the grommet 1 side, it wraps around from the door hinge part to the trim installation side, and the door harness 3 is routed in an L shape along the grommet 3 as shown in FIG. For this reason, the fixing work on the jig plate constituted by a plane becomes difficult. For this reason, the problem that the tape winding fixing of the door harness 3 is not easy arises.

  Accordingly, an object of the present invention is to provide a grommet that has good workability for assembling a wire harness, can easily manage the dimensions of the wire harness, and can suppress the occurrence of problems such as biting of the wire harness.

The invention according to claim 1 is a grommet that sandwiches a wire harness that is mounted on a panel of a vehicle and is routed on the panel in a waterproof state between the panel and the grommet body through which the wire harness is inserted. A grommet inner cover comprising an insertion plate portion mounted on the back side of the grommet body and a cover piece connected to the insertion plate portion via a hinge and pivotable with respect to the grommet body; and the grommet inner cover The grommet inner cover comprising a grommet inner base provided with a bent base piece that is disposed on the back surface side and is attached to the grommet body and is attached to the grommet body and forms a predetermined angle with respect to the back surface of the grommet body. The insertion plate portion and the cover piece are provided with an engaging projection for locking the wire harness, Serial together with the wire harness between the the grommet cover in locked state as the grommet inner cover and the grommet inner base is inserted, the bent base piece of the cover piece of the grommet inner cover said grommet inner base It is characterized by being held in a pivoted state so as to overlap.

  Therefore, in the first aspect of the invention, while the cover piece of the grommet inner cover to be mounted on the grommet body is substantially flush with the back surface of the grommet body, the wire harness can be easily fixed with tape, for example, It becomes possible to arrange | position the bundle of wire harnesses uniformly with respect to a grommet inner cover. For this reason, according to this invention, the wiring operation | work and dimension management of a wire harness can be made easy. In addition, it is possible to route the wire harness along the bent base piece so as to form a predetermined angle with respect to the back surface of the grommet body by superimposing the grommet inner cover on the grommet inner base with the wire harness routed. it can.

Further, in this invention, since the wire harness can be prevented from expanding by the engaging protrusion formed on the grommet inner cover, the wire harness protrudes or is bitten when the grommet inner base and the grommet inner cover are overlapped. Can be prevented.

2. The grommet according to claim 1, wherein a back surface of the grommet inner base is provided with an elastically deformable clip that engages with one engagement hole formed in the panel of the vehicle, and the base of the clip. The clip is formed to have a planar shape larger than the engagement hole, and has a constricted portion in contact with the opening edge of the engagement hole at the base .

In this invention, in addition to the operation of the invention of claim 1, the clip formed on the grommet inner cover is elastically deformed and press-fitted into the engagement hole formed in the vehicle panel, so that the entire grommet is placed on the panel side. It becomes possible to engage and fix to. In this invention, since it is only necessary to insert a clip into one engagement hole, the grommet can be mounted with one touch. Also, since the clip is larger than the engagement hole, once the clip is elastically deformed and inserted into the engagement hole, the shape of the clip returns to the original size beyond the engagement hole and becomes larger, and the periphery of the engagement hole is attached to the constricted portion of the clip The panel fits. For this reason, it becomes difficult to remove the grommet, and the grommet can be securely fixed.

  As is clear from the above description, according to the invention described in claim 1, the wire harness can be easily fixed by, for example, tape winding, and the bundle of the wire harness is uniformly arranged with respect to the grommet inner cover. Can be done easily. Moreover, according to this invention, the wiring operation | work and dimension management of a wire harness can be made easy.

Moreover, since the protrusion formed on the grommet inner cover can prevent the wire harness from expanding, it is possible to prevent the wire harness from protruding or biting when the grommet inner base and the grommet inner cover are overlapped. .

According to the second aspect of the present invention, since it is only necessary to insert a clip into one engagement hole, the grommet can be reliably attached with one touch.

  Hereinafter, the detail of the grommet concerning the present invention is explained based on the embodiment shown in a drawing.

  1 is a plan view of a grommet according to the present embodiment, FIG. 2 is a partial cross-sectional view showing a state in which the grommet is attached, FIG. 3 is a cross-sectional view showing a state in which the grommet is attached, and FIG. FIG. 5 is a perspective view showing a door-side structure for mounting the grommet, and FIG.

  Here, prior to the description of the configuration of the grommet 110 of the present embodiment, the structure of the door portion to which the grommet 110 is attached will be briefly described with reference to FIG. As shown in FIG. 4, a grommet mounting recess 122 for mounting the grommet 110 of the present embodiment is formed on the side surface portion 121 of the door inner panel of the vehicle door 120 on the hinge mounting portion side. An elliptical clip engagement hole 123 that is long in the thickness direction of the door is formed at the approximate center of the bottom of the grommet mounting recess 122. The depth and shape of the grommet mounting recess 122 are set corresponding to the thickness and contour of the grommet 110 of the present embodiment.

  Next, the structure of the grommet of this embodiment is demonstrated. As shown in FIGS. 1 to 3, the grommet 110 of the present embodiment includes a grommet body 111 made of, for example, a rubber composition, and a grommet inner 112 fixed to the door side made of an elastically deformable resin material. It is roughly structured.

  As shown in FIG. 1, the planar shape of the grommet body 111 in this embodiment is a plate shape in which one end side is a semicircle and the other end side is a rectangle. Further, as shown in FIG. 3, the inner side of the grommet main body 111 is integrally formed on the outer peripheral side of the grommet main body 111 and overlaps with the inner side surface with a predetermined width along the peripheral edge portion excluding the edge on the other end side. A piece 113 is provided. A flange 114 of a grommet inner 112 described later is inserted between the inner piece 113 and the inner side surface of the grommet main body 111. Further, as shown in FIG. 2, a flexible harness protection cylinder 115 into which a vehicle harness (door harness) W is inserted is formed on one end side of the outer surface of the grommet body.

  The grommet inner 112 has a shape obtained by bending a flat rectangular tube at a right angle, and the vehicle harness W is inserted into the space in the tube. A flange portion 114 inserted between the inner side surface of the grommet body 111 and the inner piece 113 is formed on one peripheral edge portion of the bent portion of the grommet inner 112. The flange portion 114 is inserted and held with respect to the grommet body 111. Further, an opening (not shown) is formed in the grommet inner 112 at a position corresponding to the harness protection cylinder 115 formed on the grommet body 111 so as to communicate with the harness protection cylinder 115.

  2 and 3, the grommet inner recess 112 has a grommet mounting recess 122 formed in the door inner panel 121 at a portion located substantially in the center of the grommet body 111 on the surface on the door inner panel side. A clip 116 to be inserted into the clip engagement hole 123 is projected. A waterproof lip 117 is formed at the base of the clip 116 so as to go around the clip 116. The clip 116 has a substantially elliptical column shape with a constricted portion 116A formed at the base. The major axis of the ellipse in the clip 116 is set to be parallel to the longitudinal direction of the grommet body 111. Further, the planar contour of the clip 116 is set larger than the clip engagement hole 123. Furthermore, the peripheral side surface of the clip 116 is a tapered surface 116B so as to facilitate insertion into the clip engagement hole 123. The waterproof lip 117 is set so as to come into pressure contact with the side surface portion 121 of the door inner panel when the clip 116 is engaged with the clip engagement hole 123.

  In order to attach the grommet 110 having such a configuration to the side surface portion 121 of the door 120, it is only necessary to push the clip 116 into the clip engagement hole 123. FIG. 5 shows a state in which the vehicle harness W is routed by mounting the grommet 110 on the side surface portion 121 of the door inner panel of the vehicle door 120 on the hinge mounting portion side.

  In the grommet 110 of the present embodiment, as shown in FIG. 3, the peripheral portion 111 </ b> A of the grommet main body 111 presses against the side surface portion 121 of the door 120 and the waterproof lip 117 presses against the bottom surface of the grommet mounting recess 122. Therefore, waterproofness can be improved. Further, since the clip 116 and the clip engaging hole 123 for receiving the clip 116 are elliptical, the grommet 110 can be prevented from rotating, and the grommet 110 can be prevented from wobbling with respect to the door 120.

Furthermore, since there is one clip 116, the grommet 110 can be attached to the door 120 side with one touch. Further, by forming the grommet mounting recess 122 having a shape corresponding to the grommet 110 on the side surface 121 of the door 120, it is possible to suppress the grommet 110 from protruding from the side surface 121 and to improve the appearance of the side surface 121. be able to.

  Furthermore, since the clip 116 is large and the base is not fragile, the clip 116 will not be damaged even if the grommet 110 is removed again after being mounted, and the desired mounting strength can be maintained even if it is mounted again. Can do. For this reason, maintainability at the time of work, such as exchange and repair of a harness, can be improved. Further, since the clip 116 is formed so as to be positioned substantially at the center of the grommet main body 111, the force with which the peripheral edge of the grommet main body 111 abuts on the side surface portion 121 on the door side becomes uniform, and the grommet main body 111 is bent to the peripheral edge. Can be suppressed, and waterproofness can be further improved.

(Embodiment 2)
6 to 10 show Embodiment 2 of the grommet according to the present invention. The grommet 210 of the present embodiment is generally configured by a grommet main body 211, a grommet inner cover 212, and a grommet inner base 213.

  The planar shape of the grommet body 211 is a plate shape in which one end side is a semicircle and the other end side is a rectangle, like the grommet body 111 of the first embodiment. An inner piece 214 is provided along the peripheral edge 211A of the grommet main body 211 so as to overlap the inner side surface with a predetermined width and to be integrally formed on the outer peripheral side of the grommet main body 211. A mounting plate portion 215 (to be described later) of the grommet inner cover 212 is inserted and mounted between the inner piece 214 and the inner side surface of the grommet main body 211. Furthermore, a flexible harness protection cylinder 216 into which a vehicle harness (door harness) W is inserted is formed on one end side of the outer surface of the grommet body 211.

  The grommet inner cover 212 includes an insertion plate portion 215 and a cover piece 217 that are inserted between the inner piece 214 and the inner side surface of the grommet main body 211 via a hinge portion 218. Further, the insertion plate portion 215 and the cover piece 217 prevent the vehicle harness W from protruding, and engage the engagement ribs 215A and 217A engaged with the grommet inner base 213 and the vehicle harness W, respectively. Locking protrusions 215B and 217B are formed.

  The grommet inner base 213 has a substantially L-shaped side surface, is attached to the opening on the back surface of the grommet main body 211, and has a mounting plate portion 213A in which a clip 213D projects from the center of the back surface. And a bent base piece 213B bent in a direction substantially perpendicular to 213A. As shown in FIGS. 8 to 10, a waterproof lip 213E is formed around the base of the clip 213D formed on the mounting plate 213A. Further, as shown in FIG. 7, engagement protrusions 213 </ b> F that engage with the engagement ribs 215 </ b> A and 217 </ b> A of the grommet inner cover 212 are formed on both side surfaces of the grommet inner base 213. In addition, a flange portion 213 </ b> C inserted into the inner piece 214 having a semicircular opening of the grommet body 211 is formed at the end portion of the mounting plate portion 213 </ b> A.

  In order to assemble such a grommet 210, as shown in FIG. 6, after inserting the vehicle harness W through the protective cylinder 216 of the grommet body 211, the insertion plate of the grommet inner cover 212 from the back side of the grommet body 211. The part 215 is inserted and attached. Next, as shown in FIG. 7, both sides in the width direction of the bundle of the vehicle harness W are locked to the locking protrusions 215 </ b> B and 217 </ b> B of the grommet inner cover 212.

At this time, the insertion plate portion 215 and the cover piece 217 are routed in a state where the insertion plate portion 215 and the cover piece 217 are disposed so as to be located on substantially the same plane via the hinge portion 218. Thus, by performing the wiring work of the vehicle harness W on substantially the same plane, the dimension management of the vehicle harness W is facilitated. Further, in this state, as shown in FIG. Then, as shown in FIG. 8, the mounting plate portion 213A of the grommet inner base 213 is inserted and mounted so as to close the back opening of the grommet main body 211, and the engaging protrusion 213F is engaged with the engaging rib 215A. Thereafter, the cover piece 217 is overlapped and engaged with the bent base piece 213B, whereby the assembly of the grommet 210 is completed as shown in FIG. 10 is a cross-sectional view taken along the line BB in FIG.

  In the grommet 210 of this embodiment having such a configuration, the workability of assembling the vehicle harness W is good, the dimensional management of the vehicle harness W is easy, and troubles such as biting of the vehicle harness W when the door is opened and closed. Occurrence can be suppressed.

  Although the embodiment has been described above, the present invention is not limited to this, and various modifications accompanying the gist of the configuration are possible. For example, in Embodiment 1 described above, the flange portion 114 of the grommet inner 112 is inserted into the grommet main body 111. However, it is configured to be integrally formed by appropriately adopting materials of the grommet main body 111 and the grommet inner 112. Is also possible. In the above-described embodiment, the longitudinal direction of the clip 116 is parallel to the longitudinal direction of the grommet body 111. However, the clip 116 may have a right angle.

  Each embodiment described above is an example in which the present invention is applied when the grommet is mounted on the door side panel. However, the grommet according to the present invention is effective when the grommet is mounted on the vehicle body side panel in addition to the door panel. Needless to say. In the above-described embodiment, the grommet is formed of the rubber composition, but may be formed of another flexible synthetic resin. In this case as well, the clip needs to be formed of an elastically deformable material.

It is a top view which shows Embodiment 1 of the grommet which concerns on this invention. 2 is a side partial cross-sectional view of Embodiment 1. FIG. It is sectional drawing which shows the mounting state in the AA cross section of FIG. FIG. 2 is a perspective view showing a door side structure in the first embodiment. FIG. 3 is a perspective view showing a mounting state of the first embodiment. It is a disassembled perspective view which shows Embodiment 2 of the grommet which concerns on this invention. It is a disassembled perspective view of the grommet of Embodiment 2. It is a perspective view which shows the assembly | attachment operation | work of the grommet of Embodiment 2. FIG. It is a perspective view of the grommet of Embodiment 2. It is BB sectional drawing of FIG. It is a disassembled perspective view which shows the mounting state of the conventional grommet. It is a perspective view which shows the mounting state of the wire harness of the conventional grommet. It is sectional drawing which shows the mounting state of the conventional grommet.

Explanation of symbols

210 Grommet 211 Grommet body 212 Grommet inner cover 213 Grommet inner base 213b Bending base piece 217 Cover piece W Vehicle harness

Claims (2)

A grommet for holding a wire harness mounted on a panel of a vehicle and routed on the panel in a waterproof state with the panel,
A grommet body through which the wire harness is inserted;
A grommet inner cover provided with an insertion plate portion mounted on the back side of the grommet body and a cover piece connected to the insertion plate portion via a hinge and pivotable with respect to the grommet body;
A grommet inner base that is disposed on the back side of the grommet inner cover and is attached to the grommet body and includes a bent base piece that is attached to the grommet body and forms a predetermined angle with respect to the back surface of the grommet body. ,
The insertion plate portion and the cover piece of the grommet inner cover are provided with engaging protrusions for locking the wire harness, and are engaged with the grommet cover between the grommet inner cover and the grommet inner base. The grommet is characterized in that the wire harness is inserted and the cover piece of the grommet inner cover is pivotally held so as to overlap the bent base piece of the grommet inner base. 2. The grommet according to claim 1, wherein a back surface of the grommet inner base is provided with an elastically deformable clip that engages with one engagement hole formed in the panel of the vehicle, and the base of the clip. A grommet comprising: a waterproof lip formed as described above, wherein the clip is formed to have a planar shape larger than the engagement hole, and has a constricted portion that contacts an opening edge of the engagement hole at a base portion .