JP6979910B2 - Grommets and wire harnesses with grommets - Google Patents

Description

The present invention relates to, for example, a grommet that protects a wire harness that is inserted into a through hole provided in a panel such as a door panel, and a wire harness with a grommet that is inserted through the grommet.

For example, when arranging a wire harness between a vehicle body and a door, one of the mounting portions provided at both ends of the tubular grommet body as disclosed in Patent Document 1 is a panel on the door side. A wire harness is inserted through a grommet that is attached to the door panel) and the other is attached to the panel on the vehicle body side.

Generally, when one mounting part is attached to the door panel, the other mounting part and the grommet body are inserted into the through hole provided in the door panel from the door side toward the vehicle body side, and then one of the mounting parts. The grommet body is pulled toward the vehicle body by bringing the portion into contact with the through hole, and the mounting portion is pivoted with the contact portion as the pivot axis to fit into the through hole.

However, for example, when the end portion of the grommet body is connected at a position deviated from the center of the mounting portion, the tensile force exerted by pulling the grommet body is biased to the mounting portion and the shape of the mounting portion is changed. Since it is deformed, it becomes difficult to securely fit the mounting portion into the through hole, and there is a possibility that the mounting portion cannot be correctly mounted on the panel.

Japanese Unexamined Patent Publication No. 2015-202847

In view of the above-mentioned problems, it is an object of the present invention to provide a grommet that can be easily and correctly attached to a panel, and a wire harness with a grommet in which a wire harness is inserted through the grommet.

The present invention includes a grommet body for inserting a wire harness inserted into a through hole provided in the panel, and a mounting portion provided at an end of the grommet body and attached to the panel so as to cover the through hole. The mounting portion is a grommet composed of the above, and the mounting portion is formed in an oval shape and is integrated with the grommet main body connected to one side in the major axis direction of the oval, and the mounting base portion. It is composed of an outer peripheral wall portion formed along the outer peripheral edge of the grommet body and projecting to the opposite side of the grommet main body, and a reinforcing rib straddling the mounting base portion and the outer peripheral wall portion. On the other side of the grommet body, the outer peripheral wall portion is connected along the minor axis direction of the mounting base portion, and the insertion is made so that the length of the outer peripheral wall portion is the same as the insertion direction of the wire harness. The short-axis direction reinforcing rib extending toward the tip end side in the direction, the short-axis direction reinforcing rib and the other side of the mounting portion are connected, and the insertion direction is changed as the mounting portion is directed toward the other side. It is characterized by being composed of an inclined reinforcing rib inclined to the base end side opposite to the tip end side.
The present invention is also characterized by a grommet-equipped wire harness composed of the grommet and a wire harness inserted through the grommet body of the grommet.

The oval shape includes a case where the oval shape or an elliptical shape is line-symmetrical or non-line-symmetrical.
The outer peripheral wall portion is configured to extend from the outer peripheral edge toward the outside of the mounting base portion and the tip end side in the insertion direction. That is, the structure is such that the outer peripheral wall portion extends from the outer peripheral edge so as to be formed in an arc shape toward the tip end side when viewed from the minor axis direction of the mounting base portion, or the outer peripheral wall portion is said. It includes a configuration that extends from the outer peripheral edge so as to form an obtuse angle with respect to the mounting base.

The minor axis direction reinforcing rib includes a case where it is formed parallel to the minor axis direction in the mounting base portion and a case where it is formed so as to intersect the minor axis direction.
The inclined reinforcing rib includes a case where the inclined reinforcing rib is composed of one or a plurality of ribs extending from the short axis direction reinforcing rib toward the other side. Further, one end of the inclined reinforcing rib includes a configuration connected to a central portion and a portion other than the central portion of the short axis direction reinforcing rib.

According to the present invention, it can be easily and correctly attached to the through hole provided in the panel.
More specifically, the rigidity of the mounting portion can be improved by providing the short axis direction reinforcing rib and the inclined reinforcing rib at the mounting base. Further, the inclined reinforcing rib is configured to be inclined so as to taper toward the proximal end side in the insertion direction as the reinforcing rib in the short axis direction is directed toward the other side, so that the grommet main body can be used. The rigidity of the other side of the mounting portion separated from the connecting portion can be improved, and the decrease in deformability due to the improvement of the rigidity of the other side can be suppressed.

Therefore, when the one side of the mounting portion is brought into contact with the through hole and a tensile force is applied to the grommet main body toward the proximal end side in the insertion direction, the deformation of the mounting portion is suppressed. Can be fixed as a pivot axis. Therefore, the mounting portion can be triggered by using the one side of the mounting portion as a pivot axis, and the other side of the mounting portion can be guided to the other side of the through hole.

Further, since the other side of the mounting portion can be deformed by the tensile force applied to the grommet main body, the other side of the mounting portion can be easily fitted into the through hole. Therefore, the mounting portion can be easily and correctly mounted on the panel.

As an aspect of the present invention, on the outer peripheral surface of the outer peripheral wall portion, a fitting groove portion recessed so that the through hole is fitted is formed along the outer peripheral direction, and the inside of the other side of the outer peripheral wall portion. On the peripheral surface, an inner recess recessed toward the outer peripheral surface side is provided on the base end side in the insertion direction with respect to the fitting groove portion, and the other end portion of the inclined reinforcing rib is the inner side. It is connected on the base end side in the insertion direction rather than the recess.
The inner recess includes a case where the inner recess is provided on all or a part of the inner peripheral surface of the outer peripheral wall portion on the other side of the mounting portion, and the shape thereof is a V-shape, a U-shape, or a recess in a cross-sectional view. Including shape etc.

According to the present invention, it is possible to easily deform the shape of the other side of the mounting portion while suppressing the change in the shape of the fitting groove portion.
More specifically, by applying a tensile force to the grommet main body toward the proximal end side in the insertion direction, the tensile force is transmitted to the outer peripheral wall portion and the inclined reinforcing rib. Due to the tensile force transmitted to the outer peripheral wall portion and the inclined reinforcing rib, the inner recess arranged on the proximal end side in the insertion direction is deformed so as to expand from the fitting groove portion, so that the mounting portion of the mounting portion is deformed. The other side is deformed toward the connecting portion side with the grommet main body. Further, since the inner recess provided on the proximal end side in the insertion direction is deformed from the fitting groove portion to absorb the tensile force, the deformation of the fitting groove portion can be suppressed.

Therefore, the base end side of the mounting portion can be easily inserted into the through hole, and by releasing the tensile force, the edge portion of the through hole fitted in the fitting groove portion is formed by the outer peripheral portion of the inner recess. It can be sandwiched from the base end side, and the tip end side of the mounting portion can be reliably fitted into the through hole.

Further, as an aspect of the present invention, the inclined reinforcing rib may be formed along the central axis of the grommet body and along the major axis direction.
The central axis refers to an axis along the longitudinal direction that passes through the center when the grommet body is viewed from the longitudinal direction, but is not limited to the center and may have a width in a direction orthogonal to the longitudinal direction. .. Further, passing through the central axis of the grommet body described above means that the central axis of the grommet body is arranged on an extension line of the inclined reinforcing rib.

According to the present invention, the tensile force applied to the grommet body can be reliably transmitted to the other side, and the other side of the mounting portion can be reliably deformed. Therefore, the mounting portion can be more easily and reliably mounted in the through hole.

Further, as an aspect of the present invention, an annular rib is provided at a connecting portion with the grommet main body on the one side of the mounting base portion so as to stand toward the tip end side in the insertion direction, and the annular rib is provided from the outer peripheral surface of the annular rib. , An outer peripheral extension rib extending in the outer peripheral direction may be provided.

The annular rib includes a grommet body having a circular or rectangular outer shape when viewed from the longitudinal direction of the grommet body, and may have the same shape as the tip of the grommet body or may have a different shape.
The outer peripheral extending rib includes a configuration connected to or not connected to the mounting base. Further, the outer peripheral extending rib may be composed of one or a plurality of ribs extending from the outer peripheral surface of the annular rib, or may be composed of ribs extending radially from the outer peripheral surface of the annular rib. Including the case where there is.

According to the present invention, since the rigidity of the one side of the mounting portion can be improved, deformation of the one side of the mounting portion can be reliably suppressed when a tensile force is applied to the grommet body. The other side of the mounting portion can be reliably guided to the other side of the through hole.

Further, as an aspect of the present invention, the outer peripheral extending rib connects the outer peripheral surface of the annular rib and the short axis direction reinforcing rib, and the length with respect to the insertion direction is shorter than the short axis direction reinforcing rib. It may be configured.
According to the present invention, since the outer peripheral extending rib does not excessively reinforce the short axis direction reinforcing rib, it is possible to prevent the deformation of the other side of the mounting portion from being excessively suppressed.

Further, as an aspect of the present invention, the outer peripheral extending rib may be connected to the short axis direction reinforcing rib along the long axis direction.
INDUSTRIAL APPLICABILITY According to the present invention, one side of the mounting portion can be reinforced, and the tensile force for pulling the grommet main body toward the base end side can be reliably applied to the other side of the mounting portion via the outer peripheral extending rib. Can be communicated. As a result, deformation of one side of the mounting portion can be more reliably suppressed, and the other side of the mounting portion can be reliably deformed, so that the mounting portion can be more easily and reliably mounted on the panel. can.

Further, as an aspect of the present invention, an outer rib connecting the mounting base portion and the grommet main body may be erected on the base end side of the mounting base portion so as to straddle the outer peripheral edge of the other side of the mounting base portion. ..
The outer rib includes a case where one or more are erected.

According to the present invention, since the tensile force applied to the grommet main body can be transmitted to the other side of the mounting portion, the other side of the mounting portion can be reliably deformed. Therefore, the mounting portion can be reliably mounted on the panel.

Further, as an aspect of the present invention, the outer rib may be arranged along the inclined reinforcing rib.
The above-mentioned arrangement along the inclined reinforcing rib refers to a state in which the outer rib is arranged so as to overlap the inclined reinforcing rib when viewed from the longitudinal direction, and includes a case where the outer rib partially overlaps.

According to the present invention, the tensile force applied to the grommet main body can be reliably transmitted to the inclined reinforcing rib, and the other side of the mounting portion can be reliably deformed. Further, if the inclined reinforcing rib and the outer rib are arranged along the long axis direction, the other side of the mounting portion can be deformed more reliably.

Further, as an aspect of the present invention, the outer peripheral wall portion may be configured such that one side thereof is thicker than the other side in the radial direction.
According to the present invention, deformation of the one side of the mounting portion can be further suppressed.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a grommet that can be easily and correctly attached to the panel, and a wire harness with a grommet in which a wire harness is inserted through the grommet.

Schematic side view of a wire harness with grommets assembled to the panel. Schematic perspective of a wire harness with grommets. Side view of the grommet. Rear sectional view of the grommet. Front view of the grommet. Side sectional view of the grommet. Side sectional view of the grommet. Explanatory drawing of the state where the wire harness with a grommet is attached to the panel.

Hereinafter, the grommet 1 through which the wire harness 200 is inserted and the wire harness 100 with the grommet through which the wire harness 200 is inserted through the grommet 1 will be described with reference to FIGS. 1 to 8.

FIG. 1 shows a schematic side view of a wire harness 100 with a grommet assembled to a door panel D, FIG. 2 shows a schematic perspective view of the wire harness 100 with a grommet as viewed from the door side, and FIG. 3 is a side view of the grommet 1. 4 is a rear sectional view of the grommet, FIG. 3 is a sectional view taken along the line AA in FIG. 3, FIG. 5 is a front view of the grommet 1, and FIG. 6 is a side sectional view of the grommet 1. A cross-sectional view taken along the line BB in FIG. 5 is shown, and FIG. 7 is a cross-sectional view taken along the side of the grommet 1, showing a cross-sectional view taken along the line CC in FIG.
In FIG. 2, in order to clarify the configuration of the grommet 1, the wire harness 200 is shown by a broken line so as to be transparent for convenience.

Further, FIG. 8 shows an explanatory diagram of a state in which the wire harness 100 with grommets is attached to the door panel D. Specifically, FIG. 8A shows the α portion in FIG. 6 of the wire harness 100 with grommets before being attached to the door panel D, and FIG. 8B is a diagram of the wire harness 100 with grommets attached to the door panel D. The α part in 6 is shown. Note that FIG. 8B shows a wire harness 100 with a grommet deformed by applying a tensile force to the grommet main body 10 with a solid line, and a wire harness 100 with a grommet in a normal state in which the tensile force is released is shown with a broken line.

In FIG. 2, the longitudinal direction of the grommet main body 10 is defined as the longitudinal direction X, the vertical direction in FIG. 2 is defined as the vertical direction Z, and the directions orthogonal to the longitudinal direction X and the vertical direction Z are defined as the width direction Y. Further, in FIG. 2, the left side is the + X side and the right side is the −X side along the longitudinal direction X. That is, the tip side of the wire harness 200 inserted from the vehicle body side to the door panel D side is the + X side, and the base end side is the −X side. Further, the upper side in FIG. 2 is the + Z side, the lower side is the −Z side, the left side in the width direction Y in FIG. 2 is the −Y side, and the right side is the + Y side.
Further, in the YZ plane, the direction outward from the central axis of the grommet body 10 along the longitudinal direction X is defined as the outer diameter direction, and the direction toward the central axis is defined as the inner diameter direction.

As shown in FIG. 1, the wire harness 200 arranged between the door and the vehicle body in the vehicle is a door panel provided with a through hole H and a wire harness 100 with a grommet in which the wire harness 200 is inserted through the grommet 1. Wires are arranged by attaching to D and a panel (not shown) of the vehicle body provided with a through hole.

The grommet 1 through which the wire harness 200 is inserted is made of a flexible resin, and as shown in FIGS. 1 and 2, the grommet body 10 through which the wire harness 200 is inserted and the through hole H provided in the door panel D are provided. It is composed of a door side mounting portion 20 to be assembled to the vehicle body side mounting portion 20 and a vehicle body side mounting portion 30 to be mounted in a through hole provided in a panel on the vehicle body side.

The grommet main body 10 is a hollow cylindrical body, and has a bellows structure in which a raised portion 11 that is raised in the outward diameter direction and a groove portion 12 that is recessed in the inward direction are alternately arranged at a predetermined pitch along the longitudinal direction X. It is composed of.
The tip side end portion (+ X side end portion) of the grommet body 10 is connected so as to be integrated with the door side mounting portion 20, and the base end side end portion (−X side end portion) is on the vehicle body side. It is connected so as to be integrated with the mounting portion 30.

The door-side mounting portion 20 has an oval shape having a long axis in the vertical direction Z when viewed from the longitudinal direction X, and is integrated with the tip end side end portion 10a of the grommet main body 10 as shown in FIGS. 2 to 6. A substantially bottomed substantially cylinder composed of a mounting base 21 composed of the above, and an outer peripheral wall portion 22 extending from the outer peripheral edge of the mounting base 21 toward the outer diameter and extending to the tip side (+ X side). It is a body, and a reinforcing rib 40 straddles the mounting base portion 21 and the outer peripheral wall portion 22 on the tip end side of the opened door side mounting portion 20.

The mounting base 21 has an oval shape having a long axis along the vertical direction Z when viewed from the longitudinal direction X and a short axis along the width direction Y, and as shown in FIGS. 3 and 4. From the outer peripheral edge of the connecting portion 211 in the vertical direction Z so that the surface on the base end side is substantially planar along the vertical direction Z in the side view and bends to the + X side in the side view. The extending bending surface portion 212 is integrally configured.

As shown in FIGS. 4 and 5, the connecting portion 211 is formed in a rectangular shape in a plan view having a predetermined plate thickness along the longitudinal direction X. An insertion hole I having the same diameter as the inner diameter of the grommet main body 10 is formed at the central portion of the −Z side end portion of the connecting portion 211 in which the tip end side end portion 10a of the grommet main body 10 is connected.

Further, on the front end side surface (+ X side surface) of the connecting portion 211, an annular rib having the same diameter as the tip end side end portion of the grommet main body 10 and projecting to the + X side so as to be continuous with the tip end of the grommet main body 10. 50 is provided (see FIGS. 5 to 7).
The length of the annular rib 50 projecting to the + X side is configured to be substantially half the length of the short axis direction reinforcing rib described later with respect to the longitudinal direction X (see FIG. 7).

In the plan view, the bending surface portion 212 extends from the end portion of the connecting portion 211 in the vertical direction Z to a semicircle having a diameter equal to the length of the connecting portion 211 in the width direction Y, whereby the mounting base portion 21 extends. Has an oval shape in plan view. Further, the refracting surface portion 212 is configured to incline toward the + X side as it goes in the out-of-diameter direction (see FIG. 7).
A top mark T having an arrow shape pointing in the + Z direction is provided at the + Z side end portion of the refracting surface portion 212 so that the mounting direction of the grommet 1 can be known when the grommet 1 is mounted on the door panel D.

Further, on the side surface of the base end of the mounting base portion 21, an outer rib 60 that connects the grommet main body 10 and the outer peripheral wall portion 22 so as to straddle is formed along the vertical direction Z.
As shown in FIGS. 3, 6 and 7, the outer rib 60 is formed from a raised portion 11 formed at the distal end side of the grommet main body 10 toward a fitting outer peripheral wall 221 described later. It is composed of an upper outer rib 61 formed on the + Z side and a lower outer rib 62 formed on the −Z side.

The outer peripheral wall portion 22 extends from the outer peripheral edge of the mounting base portion 21, and is integrally formed by the fitting outer peripheral wall 221 that is continuously formed with the mounting base portion 21 and the fixing outer peripheral wall 222 that abuts on the door panel D. It is configured. Further, a fitting groove 23 is provided on the outer peripheral side of the connecting portion between the fitting outer peripheral wall 221 and the fixing outer peripheral wall 222 over the entire circumference of the outer circumference.

As shown in FIGS. 3 to 7, the fitting outer peripheral wall 221 is configured to expand in the outer diameter direction from the outer peripheral edge of the mounting base 21 toward the + X side. That is, the fitting outer peripheral wall 221 extends outward in diameter from the outer peripheral edge of the mounting base 21 so as to be inclined in an arc toward the longitudinal direction X in the side view. The outermost portion of the fitting outer peripheral wall 221 is configured to be one size larger than the through hole H provided in the door panel D.

Further, as shown in FIG. 6, among the inner peripheral surfaces on the + Z side of the outer peripheral wall 221 for fitting, a position corresponding to the portion where the outer diameter of the outer peripheral wall 221 for fitting is the largest is cut out in the outer diameter direction. The inner recess 24 is provided over the entire inner circumference on the + Z side. In other words, the inner recess 24 is provided inside the fitting groove 23 on the −X side. By providing the inner concave portion 24 on the inner peripheral surface of the outer peripheral wall 221 for fitting in this way, the deformability of the outer peripheral wall 221 for fitting is improved.

The fixing outer peripheral wall 222 is a tubular body having a predetermined plate thickness in the longitudinal direction X and the vertical direction Z, protruding from the + X side end portion of the fitting outer peripheral wall 221 in the outer diameter direction and the + X side. The fixing outer peripheral wall 222 has a sufficient plate thickness with respect to the longitudinal direction X.

Further, on the −Z side of the outer peripheral wall for fixing 222, a thickness portion 223 protruding toward the inner diameter side is formed so that the plate thickness in the radial direction is thicker than that on the + Z side (see FIG. 5). Therefore, the rigidity of the −Z side of the door side mounting portion 20 is higher than that of the + Z side.

As shown in FIGS. 6 and 7, the outer peripheral connection portion of the fitting outer peripheral wall 221 and the fixing outer peripheral wall 222 configured in this way is notched in the inner diameter direction and is recessed and fixed. A fitting groove 23 formed by cutting out a surface on the base end side (—X side) of the outer peripheral wall 222 along the circumferential direction is provided. The outer peripheral edge formed by the fitting groove 23 along the outer periphery is formed so as to have a similar shape slightly smaller than the through hole H provided in the door panel D, and is formed so as to be able to be fitted into the through hole H. ing.

As described above, a reinforcing rib 40 straddling the mounting base 21 and the outer peripheral wall 22 is provided on the tip end side (+ X side) of the door side mounting portion 20 composed of the mounting base 21 and the outer peripheral wall portion 22. As shown in FIGS. 5 to 7, the reinforcing ribs 40 are a short-axis direction reinforcing rib 41 that connects outer peripheral wall portions 22 along the vertical direction Z to each other in the width direction Y, and a width direction of the short-axis direction reinforcement rib 41. It is composed of an inclined reinforcing rib 42 connecting the central portion of Y and the outer peripheral wall portion 22 in the vertical direction Z. Further, an outer peripheral extending rib 43 extending in the radial direction from the outer peripheral surface of the annular rib 50 projecting from the mounting base 21 to the + X side is provided.

The short axis direction reinforcing rib 41 is a rib that stands on the + X side from the connecting portion (the + Z side end portion of the connecting portion 211) between the connecting portion 211 and the refracting surface portion 212 on the + Z side of the mounting base portion 21, and is fixed facing each other. It is provided along the width direction Y so as to connect the outer peripheral walls 222 to each other.

In other words, the short axis direction reinforcing rib 41 is arranged on the + Z side of the connecting portion of the grommet main body 10. As shown in FIG. 6, the tip portion (+ X side end portion) of the short-axis direction reinforcing rib 41 is configured to be substantially flush with the tip portion of the fixing outer peripheral wall 222.

As shown in FIGS. 5 to 7, the inclined reinforcing rib 42 extends from the central portion of the short axis direction reinforcing rib 41 in the width direction Y to the + Z side along the vertical direction Z, and is-as it goes toward the + Z axis side. It is a rib having a substantially triangular shape in a side view that is inclined so as to taper toward the X side. The inclined reinforcing rib 42 is erected on the + X side from the refracting surface portion 212.

Further, one end of the inclined reinforcing rib 42 is connected to the central portion of the short axis direction reinforcing rib 41 as described above, and the other end is the −Z side end portion of the fitting outer peripheral wall 221 on the + Z side of the mounting base portion 21. (A connecting portion between the refracting surface portion 212 and the fitting outer peripheral wall 221), which is connected to the inside diameter of the fitting groove 23.

The outer peripheral extending rib 43 is eight ribs extending radially from the outer peripheral surface of the annular rib 50 projecting to the + X side on the −Z side of the door side mounting portion 20 in the out-of-diameter direction. The −X side end of the outer peripheral extending rib 43 is integrally configured with the connecting portion 211, and each end in the extending direction is connected to the fitting outer peripheral wall 221 or the short axis direction reinforcing rib 41. .. Of the eight outer peripheral extending ribs 43, two provided along the vertical direction Z are referred to as outer peripheral extending ribs 43a and 43b, respectively.

More specifically, the outer peripheral extending rib 43a is a rib extending from the outer peripheral surface of the annular rib 50 toward the + Z side, and the end portion in the extending direction is connected to the central portion of the short axis direction reinforcing rib 41. ..
The outer peripheral extending rib 43b is a rib extending from the outer peripheral surface of the grommet main body 10 toward the −Z side, and is arranged in line with the outer peripheral extending rib 43a. That is, the outer peripheral extending ribs 43a and 43b and the inclined reinforcing ribs 42 are arranged side by side in a straight line along the vertical direction Z when viewed from the front.

The vehicle body side mounting portion 30 is provided on the base end side of the grommet body 10, and is press-fitted into a through hole provided in the panel of the vehicle body to be mounted. The grommet body 10 is connected to the + Z side of the vehicle body side mounting portion 30.

A mounting method for attaching the wire harness 100 with a grommet through which the wire harness 200 is inserted through the grommet 1 configured in this way to the through hole H provided in the door panel D will be briefly described with reference to FIG. Note that the wire harness 200 is not shown in FIG.

First, as shown in FIG. 8A, the vehicle body side mounting portion 30 and the grommet main body 10 are inserted through the through hole H provided in the door panel D from the + X side toward the −X side. Next, the −Z side end portion of the fitting groove 23 of the door side mounting portion 20 is hooked on the through hole H to be arranged, and the grommet main body 10 is pulled toward the base end side (−X side).

As a result, as shown in FIG. 8B, the + Z side of the door side mounting portion 20 rises with the fitting groove 23 on the −Z side fixed to the door panel D as the pivot axis, and the + Z side of the door side mounting portion 20 rises. The fitting groove 23 of the above can be fitted into the through hole H.

More specifically, by pulling the grommet main body 10 toward the base end side, the tensile force F acting on the grommet main body 10 is transmitted to the mounting base portion 21 and the outer peripheral wall portion 22 via the outer rib 60, and in FIG. 8A. The outer peripheral wall portion 22 is pulled toward the −X side as shown by the arrow R of.

Here, the −Z side of the outer peripheral wall portion 22 has a short axis direction reinforcing rib 41 and an annular rib 50 erected on the + X side from the connecting portion 211, and an outer surface extending radially from the outer peripheral surface of the annular rib 50. Along with the peripheral extension rib 43, the fixing outer peripheral wall 222 has a sufficient plate thickness in the radial direction in a plan view, so that the rigidity is improved.

Therefore, it is possible to prevent the −Z side of the door side mounting portion 20 from being deformed, and the −Z side of the door side mounting portion 20 hooked on the through hole H by pulling the grommet main body 10 toward the base end side is fitted. The door side mounting portion 20 can be correctly pivoted with the groove 23 as the pivot axis.

On the other hand, since the other end of the inclined reinforcing rib 42 provided on the + Z side of the outer peripheral wall portion 22 is connected at a position on the −X side of the inner recess 24, the inner recess 24 in the outer peripheral wall 221 for fitting is connected. The rigidity of the portion provided with is not improved by the inclined reinforcing rib 42, and is more easily deformed by the tensile force F than in the other portions.

More specifically, as shown in FIG. 8B, the inner concave portion 24 is deformed so as to expand by applying the tensile force F, so that the outermost diameter portion of the fitting outer peripheral wall 221 on the + Z side is formed. It will be deformed to the inner diameter side (lower left side (-Z side and -X side) in the figure). As a result, the + Z side of the fitting outer peripheral wall 221 can be inserted into the through hole H.

Further, since the inner concave portion 24 is deformed to absorb the tensile force F, the fixing outer peripheral wall 222 arranged on the + X side of the inner concave portion 24 is hardly affected by the tensile force F. Deformation of the outer peripheral wall 222 for fixing can be prevented. Therefore, it is possible to prevent the fixing outer peripheral wall 222 from inserting the through hole H.

Furthermore, since the outer peripheral extending rib 43a extending from the outer peripheral surface of the annular rib 50 and the inclined reinforcing rib 42 are arranged in a straight line along the vertical direction Z, the grommet main body 10 is −X. By pulling to the side, the tensile force F acting on the grommet main body 10 is transmitted to the inclined reinforcing rib 42 via the outer peripheral extending rib 43a.

More specifically, when the outer peripheral extending rib 43a is pulled toward the −X side, the inclined reinforcing rib 42 connected to the outer peripheral extending rib 43a via the short axis direction reinforcing rib 41 is pulled toward the −Z side. And assists in deforming the inner recess 24 so as to expand.

Similarly, the outer peripheral extension rib 43b also transmits the tensile force F that pulls the grommet main body 10 to the lower end side of the fitting outer peripheral wall 221. The rigidity is increased by being integrally configured with the fixing outer peripheral wall 222 provided with the 223, and deformation is prevented.

Since the −Z side of the door side mounting portion 20 has improved rigidity in this way, the shape can be maintained without being easily deformed by the tensile force F, and the pivoting door side mounting portion 20 of the door side mounting portion 20. It can be fixed as a pivot axis.

Further, an inner recess 24 is provided on the inner peripheral surface of the outer peripheral wall 221 for fitting, and the end portion of the inclined reinforcing rib 42 having a substantially triangular shape on the side view is −X than the inner recess 24 on the + Z side of the door side mounting portion 20. By being provided so as to be connected to the fitting outer peripheral wall 221 on the side, the + Z side of the door side mounting portion 20 can be deformed, and the fitting outer peripheral wall 221 can be inserted into the through hole H.

Then, after the fitting outer peripheral wall 221 is inserted through the through hole H, the tensile force F acting on the grommet main body 10 is released, so that the deformed fitting outer peripheral wall 221 returns to the original shape and the through hole H is formed. The fitting groove 23 is fitted into the fitting groove 23 (indicated by the broken line in FIG. 8B). In this way, the door side mounting portion 20 can be mounted on the door panel D.

By providing the inclined reinforcing rib 42, it is possible to prevent the door side mounting portion 20 from being deformed so that the outer diameter of the mounting base 21 is rolled up. No The external force on the + Z side acts on the door side mounting portion 20, so that the door side mounting portion 20 can be prevented from coming off from the door panel D.
Furthermore, by pushing the top mark T provided on the door side mounting portion 20 to the + X side, it is possible to confirm whether the door side mounting portion 20 is correctly fitted to the through hole H provided on the door panel D.

In this way, the grommet main body 10 for inserting the wire harness 200 inserted into the through hole H provided in the door panel D inside and the door panel D provided at the end of the grommet main body 10 so as to cover the through hole H. In the grommet 1 composed of the door side mounting portion 20 to be mounted, the door side mounting portion 20 is formed in an oval shape and is integrated with the grommet main body 10 on the mounting base 21 and the outer peripheral edge of the mounting base 21. It is composed of an outer peripheral wall portion 22 formed along the same direction and a reinforcing rib 40 straddling the mounting base portion 21 and the outer peripheral wall portion 22, and the reinforcing rib 40 is one side (−Z side) in the major axis direction of the mounting base portion 21. On the other side (+ Z side) of the grommet main body 10 connected to, the outer peripheral wall portion 22 is connected along the short axis direction of the mounting base portion 21, and the length of the outer peripheral wall portion 22 with respect to the insertion direction of the wire harness 200. The short axis direction reinforcing rib 41 extending from the mounting base 21 to the tip side in the insertion direction so as to have the same length, and the short axis direction reinforcing rib 41 and the other side (+ Z side) of the door side mounting portion 20 are connected. At the same time, the door is formed in the through hole H provided in the door panel D because it is composed of the inclined reinforcing rib 42 inclined toward the base end side in the insertion direction toward the other side (+ Z side) of the door side mounting portion 20. The side mounting portion 20 can be easily and correctly mounted.

More specifically, by providing the short axis direction reinforcing rib 41 in the mounting base 21, the rigidity of the door side mounting portion 20 can be improved. Therefore, even if the tensile force F is applied, the door side mounting portion 20 moves up and down. It is possible to prevent it from collapsing in the direction Z. Further, the inclined reinforcing rib 42 is inclined so as to taper toward the base end side in the insertion direction as it goes from the short axis direction reinforcing rib 41 toward the other side (+ Z side), so that the grommet main body 10 can be used. The rigidity of the other side (+ Z side) of the door side mounting portion 20 away from the connecting portion can be improved, and the other side (+ Z side) of the door side mounting portion 20 can be provided with deformability.

Therefore, when one side (-Z side) of the door side mounting portion 20 is brought into contact with the through hole H and a tensile force F toward the proximal end side in the insertion direction is applied to the grommet main body 10, the door The side mounting portion 20 can be fixed as a pivot shaft by suppressing deformation. Therefore, the door side mounting portion 20 is raised with one side (−Z side) of the door side mounting portion 20 as the rotation axis, and the other side (+ Z side) of the door side mounting portion 20 is the other side (+ Z side) of the through hole H. ) Can be induced.

Further, since the other side (+ Z side) of the door side mounting portion 20 can be deformed by the tensile force F applied to the grommet main body 10, the other side (+ Z side) of the door side mounting portion 20 is the through hole H. It becomes easy to fit in. Therefore, the door side mounting portion 20 can be correctly mounted on the door panel D.

Further, on the outer peripheral surface of the outer peripheral wall portion 22, a fitting groove 23 recessed so that the through hole H is fitted is formed along the outer peripheral direction, and is inside the other side (+ Z side) of the outer peripheral wall portion 22. On the peripheral surface, an inner recess 24 notched toward the other side (+ Z side) is provided on the base end side (-X side) in the insertion direction with respect to the fitting groove 23, and the other side of the inclined reinforcing rib 42 (-X side). Since the end portion on the + Z side is connected on the base end side (−X side) in the insertion direction from the inner recess 24, the door side mounting portion 20 is suppressed while suppressing the change in the shape of the fitting groove 23. The shape of the other side (+ Z side) can be easily deformed.

More specifically, by applying a tensile force F to the grommet main body 10 toward the proximal end side in the insertion direction, the tensile force F is transmitted to the outer peripheral wall portion 22 and the inclined reinforcing rib 42. Due to the tensile force F transmitted to the outer peripheral wall portion 22 and the inclined reinforcing rib 42, the inner recess 24 arranged on the proximal end side in the insertion direction is deformed so as to expand from the fitting groove 23, so that the door side mounting portion 20 On the other side (+ Z side) of the grommet body 22, the outer peripheral wall portion 22 is deformed toward the connecting portion side with the grommet main body 10. Further, since the tensile force F is absorbed by the deformation of the inner recess 24, the deformation of the fitting groove 23 arranged on the tip side of the inner recess 24 can be suppressed.

In this way, the other side (+ Z side) of the door side mounting portion 20 can be easily deformed, and the deformation of the fitting groove 23 can be suppressed. Therefore, the other side (+ Z side) of the door side mounting portion 20 can be deformed. It can be easily inserted into the through hole H, and the tip end side of the door side mounting portion 20 can be fitted into the through hole H.

Further, since the inclined reinforcing rib 42 passes through the center of the grommet main body 10 in the width direction Y and is formed along the long axis, the tensile force F applied to the grommet main body 10 is applied to the other side (+ Z side). ), So that the other side (+ Z side) of the door side mounting portion 20 can be reliably deformed, and the door side mounting portion 20 can be more easily and reliably mounted on the through hole H. ..

Further, on one side (-Z side) of the mounting base 21 provided with the tip side end portion 10a of the grommet main body 10, an annular rib 50 is provided upright toward the tip side (+ X side) in the insertion direction. By providing the outer peripheral extending rib 43 extending in the outer peripheral direction from the outer peripheral surface of the annular rib 50, the rigidity of one side (-Z side) of the door side mounting portion 20 can be improved, so that the grommet can be improved. When a tensile force F is applied to the main body 10, deformation of one side (−Z side) of the door side mounting portion 20 can be reliably suppressed, and the other side (+ Z side) of the door side mounting portion 20 can be formed through the through hole H. Can be reliably guided to the other side (+ Z side) of.

Furthermore, the outer peripheral extending rib 43 connects the outer peripheral surface of the annular rib 50 and the short axis direction reinforcing rib 41, and the length with respect to the insertion direction is shorter than that of the short axis direction reinforcing rib 41. As a result, since the outer peripheral extending rib 43 does not excessively reinforce the short axis direction reinforcing rib 41, it is possible to prevent the deformation of the other side (+ Z side) of the door side mounting portion 20 from being excessively suppressed.

Further, since the outer peripheral extending rib 43 is connected to the short axis direction reinforcing rib 41 along the long axis, one side (−Z side) of the door side mounting portion 20 can be reinforced and the grommet can be reinforced. The tensile force F that pulls the main body 10 toward the base end can be reliably transmitted to the other side (+ Z side) of the door side mounting portion 20 via the outer peripheral extending rib 43. As a result, deformation of one side (−Z side) of the door side mounting portion 20 can be more reliably suppressed, and deformation of the other side (+ Z side) of the door side mounting portion 20 can be reliably performed, which makes it easier. Moreover, the door side mounting portion 20 can be securely mounted on the door panel D.

Further, on the base end side of the mounting base portion 21 in the insertion direction, an upper outer rib 61 connecting the mounting base portion 21 and the grommet main body 10 is erected so as to straddle the outer peripheral edge of the other side (+ Z side) of the mounting base portion 21. Thereby, the tensile force F applied to the grommet main body 10 can be transmitted to the other side (+ Z side) of the door side mounting portion 20. Therefore, the other side (+ Z side) of the door side mounting portion 20 can be reliably deformed, and the door side mounting portion 20 can be reliably mounted on the door panel D.

Further, by arranging the upper outer rib 61 along the inclined reinforcing rib 42, the tensile force F acting on the grommet main body 10 can be reliably transmitted to the inclined reinforcing rib 42, and the door side mounting portion 20 can be reliably transmitted. The other side (+ Z side) of the can be reliably deformed. Further, since the inclined reinforcing rib 42 and the outer rib 60 are arranged along the major axis direction, the other side (+ Z side) of the door side mounting portion 20 can be deformed more reliably.

Further, the fixing outer peripheral wall 222 constituting the outer peripheral wall portion 22 is configured to be thicker on one side (−Z side) than on the other side (+ Z side) in the radial direction. Deformation of one side (−Z side) of the door side mounting portion 20 can be further suppressed.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The panel corresponds to the door panel D and
The reinforcing ribs correspond to the short axis direction reinforcing ribs 41 and the inclined reinforcing ribs 42.
The mounting part corresponds to the door side mounting part 20 and
The grommet corresponds to the grommet 1 and
The fitting groove portion corresponds to the fitting groove 23 and corresponds to the fitting groove 23.
The annular rib corresponds to the annular rib 50 and
The outer rib corresponds to the upper outer rib 61,
The present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, in the present embodiment, the door side mounting portion 20 has an oval shape in a plan view, but may have an elliptical shape, for example, or may have a shape such as an egg shape that does not have a symmetrical shape in the vertical direction Z and the width direction Y. good.

Further, in the present embodiment, the fitting outer peripheral wall 221 extends from the outer peripheral edge of the refracting surface portion 212 so as to draw an arc in the side view, but is refracted so as to draw an obtuse angle with respect to the refracting surface portion 212 in the side view, for example. The fitting outer peripheral wall 221 may extend from the outer peripheral edge of the surface portion 212.

Further, the short axis direction reinforcing rib 41 does not necessarily have to be formed along the width direction Y, and may intersect with respect to the width direction Y.
Further, the inclined reinforcing rib 42 is connected to the central portion of the short axis direction reinforcing rib 41 in the width direction Y, but may be connected to a portion other than the central portion, and a plurality of inclined reinforcing ribs are provided. May be. However, since the inclined reinforcing rib 42 is connected to the central portion of the short axis direction reinforcing rib 41 in the width direction Y, the tensile force F can be reliably transmitted to the inclined reinforcing rib 42 via the outer peripheral extending rib 43. , It is preferable that the door side mounting portion 20 is connected to a central portion that can be deformed.

Furthermore, in the present embodiment, the eight outer peripheral extending ribs 43 extend radially from the outer peripheral surface of the annular rib 50, but the number of outer peripheral extending ribs 43 can be appropriately changed. Further, unlike the outer peripheral extending rib 43a, it is not always necessary to connect to the central portion of the short axis direction reinforcing rib 41, but the outer peripheral extending rib 43 is aligned with the inclined reinforcing rib 42 along the vertical direction Z. Is preferable. In other words, at least one of the one or more outer peripheral extending ribs 43 provided is connected to a connecting portion in which one end of the inclined reinforcing rib 42 along the vertical direction Z is connected to the short axis direction reinforcing rib 41. Is preferable.

Further, in the present embodiment, the annular rib 50 has the same shape as the tip end portion of the grommet body 10 when viewed from the longitudinal direction X, but does not necessarily have the same shape, and is, for example, an ellipse when viewed from the longitudinal direction X. It may have a shape or a rectangular shape, or it may have a ring shape having an inner diameter different from the inner diameter of the grommet main body 10.

1 Grommet,
10 Grommet body 20 Door side mounting part 21 Mounting base 22 Outer peripheral wall part 40 Reinforcing rib 41 Short axis direction reinforcing rib 42 Inclined reinforcing rib 23 Fitting groove 24 Inner concave portion 50 Circular rib 43 Outer peripheral extending rib 60 Outer rib 100 With grommet Wire harness 200 Wire harness D Door panel H Through hole

Claims (10)

The grommet body that inserts the wire harness that is inserted into the through hole provided in the panel inside, and the grommet body.
A grommet provided at the end of the grommet body and composed of a mounting portion attached to the panel so as to cover the through hole.
The mounting part is
A mounting base formed in an oval shape and integrated with the grommet body connected to one side in the major axis direction of the oval,
An outer peripheral wall portion formed along the outer peripheral edge of the mounting base and projecting to the opposite side of the grommet body,
It is composed of a reinforcing rib straddling the mounting base portion and the outer peripheral wall portion.
The reinforcing rib
On the other side of the mounting base from the grommet body, the outer peripheral wall portion is connected along the short axis direction of the mounting base, and the length is the same as the length of the outer peripheral wall portion with respect to the insertion direction of the wire harness. With the short axis direction reinforcing rib extending toward the tip side in the insertion direction as described above,
The short-axis direction reinforcing rib is connected to the other side of the mounting portion, and is inclined toward the base end side opposite to the tip side in the insertion direction as the mounting portion is directed toward the other side. Grommet composed of reinforcing ribs. On the outer peripheral surface of the outer peripheral wall portion, a fitting groove portion recessed so that the through hole is fitted is formed along the outer peripheral direction.
On the inner peripheral surface on the other side of the outer peripheral wall portion , an inner concave portion recessed toward the outer peripheral surface side is provided on the proximal end side in the insertion direction with respect to the fitting groove portion.
The grommet according to claim 1, wherein the other end of the inclined reinforcing rib is connected to the proximal end side in the insertion direction with respect to the inner recess. The grommet according to claim 1 or 2, wherein the inclined reinforcing rib passes through the central axis of the grommet body and is formed along the major axis direction. An annular rib that stands toward the tip end side in the insertion direction is provided at the connecting portion of the mounting base portion on one side of the grommet body.
The grommet according to any one of claims 1 to 3, wherein an outer peripheral extending rib extending from the outer peripheral surface of the annular rib in the outer peripheral direction is provided. The outer peripheral extending rib connects the outer peripheral surface of the annular rib and the short axis direction reinforcing rib, and also
The grommet according to claim 4, wherein the length with respect to the insertion direction is shorter than that of the short axis direction reinforcing rib. The grommet according to claim 4 or 5, wherein the outer peripheral extending rib is connected to the short axis direction reinforcing rib along the long axis direction. On the base end side of the mounting base,
The grommet according to any one of claims 1 to 6, wherein an outer rib connecting the mounting base and the grommet main body is erected so as to straddle the outer peripheral edge of the other side of the mounting base. The grommet according to claim 7, wherein the outer rib is arranged along the inclined reinforcing rib. The grommet according to any one of claims 1 to 8, wherein the outer peripheral wall portion has a plate thickness on one side in the radial direction as compared with the other side. The grommet according to any one of claims 1 to 9,
A wire harness with a grommet composed of a wire harness inserted into the grommet body of the grommet.

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