JP2005353450A - Grommet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grommet which does not bring harnesses into contact with the periphery of the opening of a panel body. <P>SOLUTION: An antenna feeder 5 is pressed from a notch 10 formed in the base 7 of a grommet 3 to be inserted through an insertion hole 9. Even if the antenna feeder 5 is forced to move toward the notch 10 in the insertion hole 9 and to be pressed into the notch 10, since the notch 10 is formed in the shape of a crank, the antenna feeder 5 makes contact with the base 7 of the grommet 3. Therefore, since the base 7 of the grommet 3 is between the antenna feeder 5 and the periphery 13 of the opening 12, the antenna feeder 5 is protected even if the antenna feeder 5 inserted in the insertion hole 9 is forced to move in any direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a grommet, and more particularly to a grommet that is attached to an opening of a panel body and protects harnesses that are inserted through the opening.

  Conventionally, panel bodies such as an inner panel and a dash panel of an automobile have been provided with openings for inserting harnesses into the passenger compartment, and engine openings, wind noises, etc. are provided in the opening. A grommet that prevents leakage is fitted. Furthermore, this grommet protects the harnesses so that the harnesses do not contact and damage the inner peripheral edge of the opening by sealing the gap between the inner peripheral edge of the opening of the panel body and the harnesses. Such a grommet includes a grommet base that closes the opening of the panel body, and an insertion hole that is provided in the grommet base and through which harnesses are inserted. And in the grommet where the one end side of the insertion hole is opened, since harnesses can be inserted from the opening side and can be inserted through the insertion hole, the grommet can be easily attached to the harnesses.

However, when such a grommet is fitted to the opening of the panel body and the harnesses are biased toward the opening side of the insertion hole, the outer peripheral surface of the harnesses directly contacts the periphery of the opening. Therefore, the harnesses may be damaged. Therefore, for example, at the opening end portion that forms the opening portion of the harness insertion hole (insertion hole), protruding pieces that are elastically deformed protrude toward the inside of the hole so as to face each other. A harness protector (grommet) in which a narrow opening is formed between tip portions has been proposed (see, for example, Patent Document 1). Since the narrow opening of the harness protector is adjusted to be narrower than the width of the harness, even if the harness inserted through the harness insertion hole is urged toward the narrow opening, the harness has two protruding pieces. Since it contacts and stops at each front-end | tip part, a contact with the periphery of an insertion hole (opening part) is avoided, and a harness can be protected.
Japanese Utility Model Publication No. 6-12220

  However, according to the harness protector (grommet) described in Patent Document 1, when the harness inserted through the harness insertion hole is strongly urged toward the narrow opening, the two protruding pieces bend outward. There is a problem that the harness is detached from the narrow opening and is damaged by coming into contact with the peripheral edge of the opening of the dash panel (panel body).

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a grommet in which harnesses are not brought into contact with the peripheral edge of the opening of the panel body.

  In order to achieve the above object, the grommet according to claim 1 is a grommet which is attached to an opening formed in the panel body and protects harnesses penetrating through the opening. An insertion hole that is formed at substantially the center of the base and through which the harnesses are inserted; a flange that is provided along the outer periphery of the base and engages with an edge of the opening; and an outer periphery of the base It is cut | disconnected toward the said insertion hole, The notch part which the said harnesses can be inserted is provided, The said notch part is formed in the substantially crank shape, It is characterized by the above-mentioned.

  Further, in the grommet according to claim 2, in addition to the configuration of the invention according to claim 1, the notch has a gap smaller than the outer diameter of the harnesses. .

  In the grommet according to the first aspect, the harness can be easily inserted into the insertion hole by fitting the harness from the notch provided in the base. And since the notch has a crank shape, even if the harness inserted through the insertion hole is urged toward the notch, the harness and the edge of the opening of the panel body Since at least a part of the base portion is interposed, contact between the harnesses and the edge of the opening of the panel body can be avoided, and the harnesses can be prevented from being damaged. In addition, since the flange portion provided along the outer peripheral edge of the base portion is locked to the edge of the opening portion formed in the panel body, the grommet can be fitted to the opening portion of the panel body without being displaced. it can.

  Further, in the grommet according to claim 2, in addition to the effect of the invention according to claim 1, since the gap of the notch has a gap smaller than the outer diameter dimension of the harness, the notch It is possible to prevent the harness from falling off and being lost.

  Hereinafter, a grommet 3 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which the grommet 3 is fitted into the opening 12 of the inner panel 2, and FIG. 2 is a plan view of the grommet 3 fitted into the opening 12. 2 is a cross-sectional view taken along line AA shown in FIG. 2, FIG. 4 is a cross-sectional view taken along line BB shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along line CC shown in FIG. FIG. 1 and 2, the upper side of FIGS. 1 and 2 is the upper side of the grommet 3, the lower side is the lower side of the grommet 3, the right side is the right side of the grommet 3, and the left side is the left side of the grommet 3. Further, the depth side of the inner panel 2 in FIG. 1 is the outside of the vehicle compartment (not shown), and the front side of the paper surface is the inside of the vehicle compartment.

  As shown in FIG. 1, an inner panel 2 inside a vehicle (not shown) is provided with an opening 12 surrounded by an edge 13, and an antenna feeder line 5 is inserted into the opening 12. . The antenna feeder line 5 is connected to a pillar antenna housed in a pillar on the side of the vehicle, and passes from the inside of the pillar through a gap between the outer panel (not shown) and the inner panel 2. It is introduced into the passenger compartment from the opening 12 and connected to a radio or the like (not shown). And the grommet 3 of this embodiment is attached to this antenna feeder line 5, and this grommet 3 is fitted by the opening part 12 of the inner panel 2 from the inner side of a vehicle interior. The grommet 3 closes a gap between the opening 12 and the antenna feeder wire 5 to shield engine sound and the like leaking into the vehicle interior, and the antenna feeder wire 5 contacts the edge 13 of the opening 12. To protect against damage.

  Next, the shape of the grommet 3 will be described. As shown in FIGS. 1 and 2, the grommet 3 is formed according to the shape of the opening 12 and is integrally molded with an elastic resin. The grommet 3 includes a base portion 7 that is vertically long and substantially elliptical in plan view, a substantially strip-like wall portion 8 erected substantially vertically along the outer peripheral edge of the base portion 7, and an end of the wall portion 8. It is comprised from the part and the flange part 6 extended toward the outward substantially perpendicular | vertical with respect to the surface of the wall part 8. As shown in FIG. Furthermore, a substantially circular insertion hole 9 through which harnesses such as the antenna feeder wire 5 are inserted is provided at the approximate center of the base portion 7. Further, the base portion 7 is provided with a notch portion 10 that is cut in a substantially crank shape from the insertion hole 9 toward the right direction (right direction in FIGS. 1 and 2) to the outer peripheral edge of the flange portion 6. .

  Furthermore, as shown in FIG. 2, the notch 10 includes a first notch 10 a that is cut from the right inner peripheral surface of the lower portion of the insertion hole 9 toward the right in the vicinity of the outer edge of the base 7. A second cutout portion 10b cut substantially vertically upward from one longitudinal right end portion of the first cutout portion 10a, and a further upward rightward direction from one longitudinal upper end portion of the second cutout portion 10b. The third cutout portion 10 c is cut to the outer edge of the flange portion 6. The notch 10 is provided with a gap along the cut, and the width of the gap is adjusted to be narrower than the outer diameter of the antenna feeder wire 5. In the grommet 3 of the present embodiment, the outer diameter dimension of the antenna feeder wire 5 is 5 mm, whereas the width of the gap of the notch 10 is adjusted to 2 mm.

  Further, the base 7 includes a first convex base 7a having a substantially rectangular shape in plan view formed by being surrounded by the outer peripheral edge of the insertion hole 9, the first notch 10a and the second notch 10b, and a second A cutout portion 10b, a third cutout portion 10c, and a second convex base portion 7b having a substantially rectangular shape in plan view formed by being surrounded by the wall portion 8 are provided. The flange portion 6 and the wall portion 8 shown in FIG. 1 correspond to “flange portions”.

  Next, a method for attaching the grommet 3 having the above configuration will be described. As shown in FIG. 1, first, the antenna feeder line 5 is inserted into the opening 12 of the inner panel 2 from the outside of the vehicle compartment (the back side in FIG. 1) toward the inside of the vehicle compartment, and the connector 5a is inserted. Install in the passenger compartment. Next, the cut portion of the notch portion 10 formed in the flange portion 6 of the grommet 3 is opposed to an arbitrary position of the antenna feeder line 5 in the inner portion of the passenger compartment. Next, the notch 10 is opened by the elastic deformation of the grommet 3 to increase the width of the gap. Then, the antenna feeder wire 5 having an outer diameter dimension larger than the width of the gap of the notch 10 is fitted along the crank-shaped gap of the notch 10. Thus, the antenna feeder wire 5 is inserted into the insertion hole 9 of the grommet 3.

  Next, the grommet 3 inserted through the antenna feeder line 5 is fitted into the opening 12 from the inside of the passenger compartment. First, the back side of the base 7 of the grommet 3 is opposed to the front of the opening 12. Then, the base 7 and the wall 8 of the grommet 3 are inserted toward the opening 12. At this time, due to elastic deformation of the grommet 3, the wall portion 8 of the grommet 3 is inserted into the opening 12 while being slightly bent inward. Further, since the repulsive force due to the bending of the wall 8 presses against the edge 13 of the opening 12, a gap is generated between the outer peripheral surface of the wall 8 of the grommet 3 and the edge 13 of the opening 12. It is inserted without. Since the surface of the flange portion 6 of the grommet 3 that faces the edge portion 13 of the opening portion 12 comes into contact with the outer surface of the edge portion 13 and is locked, the grommet 3 is displaced from the opening portion 12. It is securely fitted. From the above, the grommet 3 can be easily attached to the antenna feeder line 5 even after the antenna feeder line 5 is inserted through the opening 12.

  Next, the protection function of the antenna feeder line 5 by the grommet 3 will be described. As shown in FIG. 2, the antenna feeder line 5 inserted through the insertion hole 9 of the grommet 3 is surrounded by the base portion 7 of the grommet 3. Therefore, since the base portion 7 of the grommet 3 is always interposed between the antenna feeder wire 5 and the edge portion 13 of the opening portion 12, the antenna feeder wire 5 contacts the edge portion 13 of the opening portion 12 and is damaged. Can be prevented. And although the notch part 10 is provided in the base part 7 of the grommet 3 of this embodiment, even when the antenna feeder line 5 which penetrates the insertion hole 9 is urged | biased to the notch part 10 side. The antenna feeder line 5 can be prevented from contacting the edge 13 of the opening 12. Hereinafter, the protection function by the grommet 3 when the antenna feeder wire 5 is urged toward the notch 10 side (the right side in FIG. 2) of the insertion hole 9 will be described.

  For example, when the antenna feeder line 5 is urged to the right side from the substantially central position of the insertion hole 9, the antenna feeder line 5 contacts the edge of the first convex base portion 7a as shown in FIGS. To do. Further, even when the antenna feeder line 5 is urged to the right side from the upper position of the insertion hole 9, as shown in FIGS. 2 and 4, the antenna feeder line 5 contacts the edge of the first convex base portion 7a. To do. In other words, when the antenna feeder line 5 is urged to the right side of the insertion hole 9 when the antenna feeder line 5 is at an upper position from the approximate center position of the insertion hole 9, the inner panel 2 No contact is made with the edge 13 of the opening 12. Therefore, since the antenna feeder line 5 is protected by the elasticity of the first convex base portion 7a, the antenna feeder line 5 can be prevented from being damaged.

  Further, when the antenna feeder line 5 is urged to the right side from the lower position of the insertion hole 9, the antenna feeder line 5 is connected to the first cutout portion 10 a of the cutout portion 10 as shown in FIGS. 2 and 5. Collide near the entrance of the. At this time, since the first notch 10a is expanded by elastic deformation of the grommet 3, the antenna feeder wire 5 is inserted into the first notch 10a toward the right side (right side in FIGS. 2 and 5). The first notch 10a moves along the longitudinal direction. The antenna feeder line 5 comes into contact with the edge of the second convex base 7b and stops. That is, even when the antenna feeder line 5 is fitted into the first notch 10a without contacting the edge of the first convex base 7a, the antenna feeder line 5 is in contact with the edge of the second convex base 7b. Therefore, it does not contact the edge 13 of the opening 12 of the inner panel 2. Therefore, since the antenna feeder line 5 is protected by the elasticity of the second convex base portion 7b, the antenna feeder line 5 can be prevented from being damaged. Moreover, since the antenna feeder line 5 in which the first notch portion 10a is inserted comes into contact with the edge of the second convex base portion 7b and stops, it can be prevented from coming out of the notch portion 10.

  Thus, even when the antenna feeder line 5 inserted through the insertion hole 9 is urged toward the notch 10, one of the first convex base 7 a and the second convex base 7 b is the antenna feeder line. 5 and the edge 13 of the opening 12, the antenna feeder wire 5 can be prevented from coming into contact with the edge 13 of the opening 12 and being damaged.

  As described above, according to the grommet 3 according to an embodiment of the present invention, the antenna feeder wire 5 can be simply inserted into the insertion hole 9 by inserting the antenna feeder wire 5 from the notch 10 of the base portion 7. Can be inserted. Therefore, the grommet 3 can be easily assembled even after the antenna feeder wire 5 is inserted through the opening 12 of the inner panel 2. Further, even when the antenna feeder wire 5 is biased toward the cutout portion 10 of the insertion hole 9 and the antenna feeder wire 5 is fitted into the cutout portion 10, the cutout portion 10 is formed in a crank shape. Therefore, the antenna feeder wire 5 comes into contact with the base portion 7 of the grommet 3. Accordingly, the base 7 of the grommet 3 is interposed between the antenna feeder wire 5 and the edge 13 of the opening 12 regardless of the direction in which the antenna feeder wire 5 inserted through the insertion hole 9 is urged. The antenna feeder wire 5 can be protected by the elasticity of the base 7. In addition, since the width of the gap of the notch 10 is narrower than the outer diameter of the antenna feeder wire 5, the antenna feeder wire 5 is in the grommet 3 in a state where the antenna feeder wire 5 is inserted into the insertion hole 9 of the grommet 3. Cannot pass through the gap width of the notch 10. Therefore, since the grommet 3 does not naturally come off from the antenna feeder line 5, the loss of the grommet 3 can be prevented.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, at least one crank may be formed in the notch 10, and a continuous crank may be formed. Moreover, the notch 10 may be cut into a zigzag shape or a wave shape.

  Further, the shape of the base portion 7 of the grommet 3 may be not only an ellipse but also a circle or a polygon as long as it matches the shape of the opening 12 of the inner panel 2.

  Furthermore, it is preferable to provide the notch 10 so that the distance between the insertion hole 9 and the outer edge of the flange 6 is the shortest in order to simplify the attachment of the antenna feeder wire 5.

  The grommet of the present invention can be used not only for the opening of an automobile panel but also for various openings formed in a panel-shaped main body.

FIG. 4 is a perspective view showing a state where the grommet 3 is fitted into the opening 12 of the inner panel 2. It is a top view of the grommet 3 fitted by the opening part 12. FIG. It is AA arrow direction sectional drawing shown in FIG. FIG. 3 is a cross-sectional view in the direction of arrows BB shown in FIG. 2. It is CC sectional view taken on the line in FIG.

Explanation of symbols

2 Inner panel 3 Grommet 5 Antenna feeder wire 6 Flange portion 7 Base portion 7a First convex base portion 7b Second convex base portion 8 Wall portion 9 Insertion hole 10 Notch portion 10a First notch portion 10b Second notch portion 10c First 3 Notch 12 Opening 13 Edge

Claims (2)

A grommet that is attached to an opening formed in the panel body and protects harnesses that penetrate the opening,
A substantially disc-shaped base;
An insertion hole formed in the approximate center of the base, through which the harnesses are inserted;
A flange portion provided along an outer peripheral edge of the base portion and engaged with an edge of the opening;
A cutout portion that is cut from an outer peripheral edge of the base portion toward the insertion hole and into which the harnesses can be fitted, and
The grommet characterized in that the notch is formed in a substantially crank shape.   The grommet according to claim 1, wherein the notch has a gap that is smaller than an outer diameter of the harness.

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