JP6979916B2 - Grommets and wire harnesses with grommets - Google Patents

Description

The present invention relates to a grommet that protects a wire harness that is arranged in a vehicle body such as an automobile, and a wire harness with a grommet in which the wire harness is inserted through the grommet.

For example, in order to protect the wire harness that penetrates through the through hole provided in the panel constituting the vehicle body from the metal panel and prevent the ingress of moisture into the vehicle interior through the through hole, the wire harness has water stoppage and is wire. A grommet that protects the harness is used.

Since the grommet is mainly composed of an elastic member, if an unintended deformation occurs in the mounting portion to be attached to the through hole, a gap is formed between the mounting portion and the vehicle body insertion hole to stop the grommet. It becomes impossible to secure water-based properties.

To deal with such a problem, the mounting portion to be attached to the through hole provided in the panel of the grommet main body through which the wire harness is inserted is a connecting portion curved from one end of the grommet main body in the longitudinal direction of the grommet main body. In the grommet of Patent Document 1 connected via the above, the outer surface in the thickness direction of the mounting portion and the thickness direction rib provided on the outer peripheral surface of the connecting portion along the width direction, and the outer peripheral surface of the mounting portion. It is shown that a rib composed of a widthwise rib protruding outward in the width direction is provided in the mounting portion.

In the grommet disclosed in Patent Document 1, the thickness direction rib can suppress the elastic deformation of the mounting portion, and the width direction rib can abut with the panel to suppress the rotation of the mounting portion. Therefore, after mounting. It is said that it is possible to prevent a gap from being formed between the mounting portion and the panel.

However, since the grommet is provided with the width direction rib protruding toward the outside in the width direction of the mounting portion, for example, the grommet inserted into the through hole provided on the door panel side is inserted into the through hole on the body panel side. When mounting the mounting portion, the widthwise rib may interfere with the through hole on the door panel side, the mounting portion may be rolled up, and a gap may be created between the mounting portion and the panel in the mounted state. ..

Japanese Unexamined Patent Publication No. 2016-54587

In view of the above-mentioned problems, the present invention has a grommet and a grommet capable of preventing an unintentional curl of a mounting portion attached to a through hole provided in a panel and preventing a gap between the mounting portion and the panel in the mounted state. It is an object of the present invention to provide a wire harness with a grommet in which a wire harness is inserted through the grommet.

INDUSTRIAL APPLICABILITY The present invention is provided on a tubular grommet main body, a mounting portion having a larger diameter than the grommet main body, and one end side of the grommet main body, which is exteriorized by an electric wire inserted through a through hole formed in the panel. A grommet that is composed of a connecting portion that connects the mounting portion and the grommet main body and has an insertion space for inserting the electric wire inside, and the mounting portion intersects the insertion direction of the electric wire and is described as described above. A rib is erected from the end side of the mounting portion to a different end side, and the rib is arranged between the mounting portion and the connecting portion, and at least a part thereof is integrally configured with the connecting portion. The mounting portion is formed in an oval shape having a long axis along the longitudinal direction of the grommet body, and the connecting portion is composed of a curved connecting portion curved in an arc shape with respect to the longitudinal direction. The ribs are arranged along the short axis direction of the mounting portion and at the end portion of the connecting portion between the mounting portion and the curved connecting portion on the outer side of the curved connecting portion in the bending direction. ..
The present invention is also characterized in that it is a wire harness with a grommet, which is composed of the above-mentioned grommet and a wire harness inserted through the grommet.

The connecting portion includes, for example, a case where it is configured along the longitudinal direction of the grommet body, and a case where it is configured so as to be curved with respect to the longitudinal direction.
The term "from the end side to the different end side of the mounting portion" refers to any direction that intersects the insertion direction, for example, when the mounting portion is oval and follows a long axis or a short axis. , including also along a direction crossing the major and minor axes.
The oval shape includes a rectangular shape with rounded corners, an elliptical shape, and an asymmetrical substantially elliptical shape.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to prevent the mounting portion to be attached to the through hole provided in the panel from interfering with the through hole on the other side and being rolled up. In particular, when the mounting portion to be attached to the through hole provided on one side of the vehicle body is inserted through the through hole provided on the other side of the vehicle body, the mounting portion interferes with the through hole on the other side and is rolled up. Can be prevented.

More specifically, when the rib intersects the insertion direction of the electric wire and is erected from the end side of the mounting portion to a different end side, so that the mounting portion and the through hole interfere with each other. Even so, the rib can receive an external force acting on the mounting portion.

Further, since a part of the rib is integrally formed with the connecting portion, a part of the external force received by the rib can be dispersed in the connecting portion, so that the rib can be reinforced so as to be stronger. As a result, it is possible to prevent the mounting portion from rolling due to the action of the external force.

Furthermore, since the rib intersects the insertion direction of the electric wire in the mounting portion and stands between the end side and the different end side of the mounting portion, the mounting portion can be made compact. , It is possible to prevent the mounting portion of the grommet that is inserted into the through hole from interfering with the through hole.

In this way, when the grommet is inserted into the through hole, it is possible to prevent the mounting portion of the grommet that is inserted into the through hole from interfering with the through hole, and the mounting portion and the through hole are connected to each other. Even if they interfere with each other, it is possible to prevent the mounting portion from being rolled up by an external force acting on the mounting portion. Therefore, it is possible to prevent a gap from being generated between the mounting portion and the panel in the mounted state.

In addition, it is possible to reliably prevent the mounting portion provided in the oval shape from curling.
More specifically, since the curved connecting portion inside the curved connecting portion in the bending direction is close to the mounting portion, an external force on the connecting portion side of the mounting portion, that is, in a direction in which the mounting portion is rolled up. Even if an external force is applied, the mounting portion is unlikely to be rolled up toward the connecting portion, but the outside of the mounting portion in the bending direction has a space widened on the connecting portion side of the mounting portion, so that the mounting portion has a space. When the external force is applied, the outside of the mounting portion in the bending direction is likely to be rolled up.

On the other hand, since the ribs are arranged outside the bending direction in the mounting portion, even when an external force is applied to the connecting portion side on the mounting portion outside the bending direction, the mounting portion has the ribs. Since the ribs arranged on the outside in the bending direction receive the external force, it is possible to prevent the outside of the mounting portion in the bending direction from being rolled up toward the connecting portion.

Further, even when an external force is applied to one end or both ends in the short axis direction of the mounting portion on the connecting portion side, the rib configured over the short axis direction receives the external force. , Both ends of the mounting portion in the minor axis direction can be prevented from being rolled up toward the connecting portion.

In this way, the mounting portion is configured over the short axis direction, and the ribs arranged outside the curved connecting portion in the bending direction can prevent the mounting portion provided in the oval shape from being rolled up.

Further, as an aspect of the present invention, the rib is provided with a flat rib flat surface portion on the curved connecting portion side in the insertion direction, and the curved connecting portion is connected to the rib flat surface portion on the outside in the bending direction. , May be connected to the mounting portion via the rib.

The curved connecting portion side in the above-mentioned insertion direction refers to the side where the curved connecting portion is provided when viewed from the mounting portion in the insertion direction of the electric wire to be inserted into the mounting portion. In other words, it refers to the side where the curved connecting portion is connected to the mounting portion.

The provision of a planar rib flat surface portion on the outer side of the curved connecting portion in the bending direction means that the rib is a part of the outer end portion in the bending direction of the rib flat surface portion on the outer side of the bending direction of the curved connecting portion. Includes a configuration in which the ribs are provided so that all are connected to the curved connecting portion.

According to the present invention, for example, when an external force is applied to the mounting portion toward the curved connecting portion side in order to insert the grommet into the through hole, the external force is dispersed in the rib flat surface portion. It is possible to surely prevent the mounting portion from being rolled up.

Further, when the rib flat surface portion is formed close to both end portions in the short axis direction, both end portions of the rib can be made thick, and the rib reinforces both end portions of the mounting portion. Therefore, even if an external force is applied to both ends of the mounting portion on the curved connecting portion side, the rib can receive the external force and both ends of the mounting portion can be rolled up. It can be prevented more reliably.

Further, as an aspect of the present invention, the rib flat surface portion may be connected to the outside of the curved connecting portion in the bending direction at the center of the mounting portion in the minor axis direction.
According to the present invention, since the external force acting on the rib provided with the rib flat surface portion can be evenly distributed on both sides in the short axis direction, it is possible to more reliably prevent the mounting portion from being rolled up.

Furthermore, as an aspect of the present invention, the rib flat surface portion may be divided into two by the curved connecting portion.

According to the present invention, since the rib flat surface portion is divided into two by connecting the rib flat surface portion so as to be covered by the curved connecting portion, the curved connecting portion can be formed even when an external force acts on the rib. It can receive the external force. Therefore, it is possible to prevent the mounting portion from being rolled up more reliably.

Further, as an aspect of the present invention, even if a plate-shaped tape fixing portion is provided from the insertion space side of the rib, the horizontal width direction is along the short axis direction and the vertical width direction extends along the insertion space. good.
According to the present invention, even when the wire harness fixed to the tape fixing portion is pulled in the extending direction in which the tape fixing portion extends and the grommet is inserted through the through hole, the tape fixing portion is fixed. The tensile force that pulls the portion can prevent the mounting portion from rolling.

Specifically, when the rib is not provided on the curved connecting portion side of the tape fixing portion, or when the tape fixing portion is provided at a position different from the rib on the insertion space side, the tape fixing portion is provided. The mounting portion connected to the base end portion of the mounting portion is pulled in the extending direction by the tensile force, and a repulsive force acts on the end portion of the mounting portion in the direction toward the curved connecting portion. .. As a result, the mounting portion is deformed so as to warp toward the curved connecting portion, and the end portion of the connecting portion is easily rolled up.

However, by providing the tape fixing portion extending along the insertion space from the insertion space side of the rib, the rib receives the tensile force and a part of the tensile force is applied to the curved connecting portion. Since it is dispersed, it is possible to suppress deformation of the mounting portion due to the tensile force. Therefore, for example, the width direction of the mounting portion is not deformed so as to warp toward the curved connecting portion side, and the mounting portion can be prevented from being rolled up.

Further, as an aspect of the present invention, the curved connecting portion may be provided with a reinforcing portion along the curved bending direction of the curved connecting portion while separating the rib from the rib by a predetermined distance.
The reinforcing portion may be provided singularly or a plurality along the bending direction. Further, the reinforcing portion may be provided on the outside in the bending direction, the inside in the bending direction, or both of the ribs.

According to the present invention, since the curved connecting portion can be reinforced, for example, when the tape fixing portion is pulled, it is possible to suppress deformation due to an external force acting on the curved connecting portion via the rib. Therefore, the connecting portion can surely receive a part of the external force received by the rib, and can prevent the mounting portion from being deformed.
Further, even in the mounted state, the deformation of the connecting portion is prevented, so that the mounting portion mounted in the through hole can be prevented from being rolled up.

Further, as an aspect of the present invention, a flat tip flat portion may be provided on the tip end side of the rib in the mounting portion.
According to the present invention, it is possible to prevent the plate thickness on the tip end side of the rib in the mounting portion from being increased, so that the grommet can be easily inserted into the through hole and the weight of the grommet can be reduced.

INDUSTRIAL APPLICABILITY According to the present invention, a grommet and a wire harness capable of preventing unintentional curling of a mounting portion attached to a through hole provided in a vehicle body and preventing a gap between the mounting portion and the panel in the mounted state are provided in the grommet. A wire harness with an inserted grommet can be provided.

Schematic perspective of a wire harness with a grommet. Schematic side view of the grommet. Schematic enlarged plan view of the mounting part in the grommet. Schematic front view of the grommet. Schematic cross-sectional view of the mounting part in the grommet. Schematic cross-sectional view along the longitudinal direction of the grommet. Explanatory drawing of grommet curl prevention. Schematic perspective of a wire harness with a grommet of another embodiment.

An embodiment of the present invention will be described below with reference to the drawings.
1 is a schematic perspective view of a wire harness 1 with a grommet, FIG. 2 is a schematic side view of the grommet 10, FIG. 3 is a schematic plan view of the grommet 10, and FIG. 4 is a body-side mounting portion 15 of the grommet 10. 5 shows a schematic front view of FIG. 5, FIG. 5 shows a cross-sectional view taken along the line AA in FIG. 2, and FIG. 6 shows a cross-sectional view taken along the line BB in FIG.

In detail, FIG. 2A shows a side view of the grommet 10, and FIG. 2B shows an enlarged side view of the connecting portion 13 and the body-side mounting portion 15 in the grommet 10.
FIG. 7 shows an explanatory diagram illustrating the prevention of curling of the body-side mounting portion 15 in the grommet 10. Specifically, FIG. 7A shows a front view of the grommet 10 when an external force F acts on the body side mounting portion 15, and FIG. 7B shows a tensile force I applied to the tape fixing portion 40. The front view of the body side mounting part 15 in the state is shown.

Here, the longitudinal direction of the grommet main body 11 is defined as the longitudinal direction L, and the lateral width direction of the grommet 10 and the direction orthogonal to the longitudinal direction L is defined as the width direction W. The left side is the + L direction along the longitudinal direction L in FIG. 1, the right side is the −L direction, the left side is the −W direction along the width direction W, and the right side is the + W direction. Further, in FIG. 1, the vertical direction is the vertical direction H, the upper side in FIG. 1 is the + H direction (upper side), and the lower side is the −H direction (lower side).
The axes and directions are the same in FIGS. 2 to 8.

As shown in FIG. 1, the wire harness 1 with grommets is formed by inserting a through hole formed in a panel such as a body or a door to form an electronic device mounted on a vehicle body and an electronic device mounted on a door or the like. It is composed of a wire harness 100 for electrically connecting the wires and a grommet 10 for inserting and protecting the wire harness 100.

The grommet 10 in the present embodiment is a grommet that protects the wire harness 100 attached to the door panel and the body panel by inserting it inside, and as shown in FIGS. 1 to 6, it has a cylindrical shape along the longitudinal direction L. The grommet main body 11, the connecting portions 12 and 13 provided at both ends of the grommet main body 11, the door side mounting portion 14 that connects to the grommet main body 11 via the connecting portion 12, and the grommet main body 11 via the connecting portion 13. It is integrally configured with the body-side mounting portion 15.

The grommet body 11 is a hollow cylindrical body made of rubber or a flexible elastomer, and has an inner diameter larger than the outer diameter of the wire harness 100, a raised portion 111 that rises in the outer diameter direction, and an inner diameter. It is configured by a flexible bellows structure in which groove portions 112 recessed in the direction are alternately arranged along the longitudinal direction L.

Although the grommet main body 11 has a bellows structure in the present embodiment, it does not necessarily have to have a bellows structure, and may be a flexible cylindrical body, or may be a combination of a bellows structure and a cylindrical body. ..

As shown in FIG. 2, the connecting portions 12 and 13 are tubular bodies that are curved in the vertical direction H with respect to the longitudinal direction L, respectively, and the internal space of the connecting portions 12 and 13 is the internal space of the grommet main body 11. It communicates with. Further, a reinforcing portion 50 curved along the connecting portions 12 and 13 is provided on the side surface portion of the connecting portions 12 and 13 on the + W direction side to increase the rigidity of the connecting portions 12 and 13.

The door-side mounting portion 14 connected to the grommet main body 11 via the connecting portion 12 is a mounting portion to be mounted in the door-side through hole formed in the door panel, and as shown in FIGS. 1 and 2, the connecting portion 12 It is configured in a circular shape in a plan view provided with an internal space of the above and a through hole U inserted therein. The bottom surface of the door side mounting portion 14 is connected to the tip end side of the reinforcing portion 50.

The body-side mounting portion 15 connected to the grommet main body 11 via the connecting portion 13 is a mounting portion for mounting on the body-side through hole formed in the body panel of the vehicle body, and the body is internally formed in the body-side through hole. An inner member 20 for fixing the side mounting portion 15 is mounted.

As shown in FIGS. 1 to 4, the body-side mounting portion 15 is provided with a semicircle at the ± L-direction side end of a rectangle whose side is along the longitudinal direction L, and is wider than the cross-sectional shape of the grommet main body 11. It is a substantially cylindrical body having a circular shape in a plan view and is configured to have a diameter. A rib 30 is erected along the width direction W on the + L direction side of the upper surface, and the body side is on the + L direction side of the lower surface. The tape fixing portion 40 extends in the −H direction along the through hole U formed in the center of the mounting portion 15.
The upper surface of the body-side mounting portion 15 is connected to the tip of the reinforcing portion 50.

The rib 30 is linear from one end (+ W direction side end) to the other end (-W direction side end) in the width direction W at the connecting portion between the rectangle forming the body side mounting portion 15 and the semicircle. It is erected in the vertical direction L and has a substantially prismatic shape having a predetermined thickness in the longitudinal direction L. That is, the rib 30 does not protrude outward in the width direction W of the body side mounting portion 15.

The rib 30 is formed from the rib upper surface 31 constituting the upper surface, the rib side surface 32 lowered from both ends of the rib upper surface 31 in the width direction toward the body side mounting portion 15, and the body from the + L direction side end portion of the rib upper surface 31. It has a solid prismatic shape composed of a rib front surface 33 facing the side mounting portion 15, and the central portion of the rib upper surface 31 and the connecting portion 13 are connected so as to be integrated (FIG. FIG. 3).

The rib upper surface 31 is a plane having a predetermined width in the longitudinal direction L, and is divided into two by covering a predetermined range with a connecting portion 13 connecting the central portions. The area covered by the connecting portion 13 is approximately one-third of the area of the rib upper surface 31, and the area of the rib upper surface 31 divided into two is configured to be the same.

The rib front surface 33 is a surface that inclines downward along the tangential direction of the connecting portion 13 that is connected at the central portion of the rib upper surface 31. That is, as shown in FIG. 2B, the rib 30 is formed in a substantially prismatic shape having a substantially trapezoidal bottom surface when viewed from the side. A tip flat portion 151 having a flat upper surface is formed on the + L direction side of the rib 30 in the body side mounting portion 15.
The rib 30 configured in this way is integrally configured with the body-side mounting portion 15.

As shown in FIGS. 4 and 5, the tape fixing portion 40 is a plate-shaped body that is formed directly below the rib 30 and extends downward from the lower surface of the body-side mounting portion 15. The tape fixing portion 40 includes a fixing portion main body 41 extending in the −H direction along a through hole U formed in the body side mounting portion 15, and a tape engaging portion protruding in the + L direction from the lower end side of the fixing portion main body 41. It is composed of a stop portion 42.

As shown in FIGS. 5 and 6, the fixing portion main body 41 is downward (-) along the through hole U formed in the body side mounting portion 15 on the outside of the curved connecting portion 13 in the bending direction (+ L direction side). It is a substantially flat plate extending in the H direction), and the upper end of the central portion is integrally formed with the rib 30. In other words, the tape fixing portion 40 is integrally configured with the connecting portion 13 via the rib 30.

The fixed portion main body 41 is arranged so that the center of the upper end of the fixed portion main body 41 corresponds to the center of the rib 30, that is, the connecting portion between the connecting portion 13 and the rib upper surface 31 is arranged above the center of the fixed portion main body 41. Is configured.
The end surface of the fixing portion main body 41 on the −L direction side is formed in an arc shape recessed in the + L direction side in accordance with the wire harness 100.

In the grommet 10 configured in this way, the door side mounting portion 14, the connecting portion 12, the grommet main body 11, the connecting portion 13, and the body side mounting portion 15 in which the internal spaces communicate with each other are present along the + L direction from the −L direction. It is arranged in order, and an insertion space S through which a wire harness 100 having both ends opened can be formed is formed inside. The wire harness 100 inserted through the insertion space S can be wound around the tape fixing portion 40 with the tape 60 and fixed (see FIG. 1).

Further, by pulling the wire harness 100 fixed to the tape fixing portion 40, the body side mounting portion 15 can be inserted into the door side through hole provided in the door panel, and the door side mounting portion 14 can be attached to the door side through hole. .. As a result, the body-side mounting portion 15 through which the door-side through hole is inserted can be attached to the body-side through-hole provided in the body panel, and the devices arranged on the door panel side and the battery arranged on the body panel side can be attached. And equipment can be electrically connected.

Next, the prevention of the body-side mounting portion 15 from being rolled up when the body-side mounting portion 15 interferes with the door-side through hole will be described with reference to FIG. 7.
When both ends of the body-side mounting portion 15 in the width direction interfere with the door-side through hole, an external force F in the + H direction acts on both ends of the body-side mounting portion 15 as shown in FIG. 7A. Will be done.

Here, since the rib 30 is erected on the upper surface of the body side mounting portion 15 in the + H direction along the width direction W, the rib 30 formed in a prismatic shape and having rigidity receives an external force F. Therefore, a reaction force D acting in the −H direction acts on the rib 30. As a result, it is possible to prevent the body-side mounting portion 15 from being deformed by the external force F, and it is possible to prevent both ends of the body-side mounting portion 15 in the width direction W from being rolled up.

Further, since the rib 30 that receives the external force F received by the body side mounting portion 15 is erected over the width direction W, the external force F can be dispersed over the entire rib 30, and the connecting portion 13 connected to the rib 30 has the external force F. The rib 30 can be reliably prevented from being deformed by the external force F, and the body-side mounting portion 15 can be reliably prevented from being rolled up.

Further, since the rib 30 is provided on the tip end side (+ L direction side) of the body side mounting portion 15, even when an external force F acts on the tip end side of the body side mounting portion 15, the rib 30 causes the external force F. Can be absorbed and the body side mounting portion 15 can be prevented from being rolled up.

Furthermore, when the wire harness 100 fixed to the tape fixing portion 40 is pulled, the central portion of the body side mounting portion 15 is pulled in the −H direction by the tensile force I applied to the wire harness 100, and the body side mounting portion is pulled. Both ends of the width direction W of 15 are easily rolled up.

However, since the tape fixing portion 40 is integrally formed with the rib 30, the pulling force I is received by the rib 30 erected over the width direction W. Since the rib 30 has a thickness in the vertical direction H, it has rigidity, and a repulsive force O that prevents the rib 30 from being deformed acts on the tensile force I to maintain the shape of the rib 30. can. As a result, the rib 30 can prevent the elastic deformation of the body-side mounting portion 15 due to the tensile force I, and prevent the body-side mounting portion 15 from being rolled up by the tensile force I.

Furthermore, since the rib 30 is integrally configured with the connecting portion 13, even if the wire harness 100 is pulled by the tensile force I in the −H direction, the tensile force I is also received by the connecting portion 13, so that the rib is The tensile force I acting on 30 is weakened.

As described above, even if the wire harness 100 (tape fixing portion 40) is pulled by the tensile force I, the rib 30 has rigidity and is connected to the connecting portion 13, so that the rib 30 and the connecting portion 13 are connected to each other. A repulsive force O facing the tensile force I is generated, and the tensile force I is canceled out. Therefore, the body-side mounting portion 15 is not deformed, and the body-side mounting portion 15 can be more reliably prevented from being rolled up.

In this way, the grommet body 11, the tubular grommet main body 11, the body side mounting portion 15 having a larger diameter than the grommet main body 11, and the grommet main body 11 are externally attached to the wire harness 100 inserted into the through hole formed in the panel. The grommet 10 is provided on one end side and is composed of a connecting portion 13 for connecting the body side mounting portion 15 and the grommet main body 11, and has an insertion space S for inserting the wire harness 100 inside. The grommet 10 has a body side mounting portion 15. However, the rib 30 intersects with the insertion direction (vertical direction H) of the wire harness 100, and the rib 30 is erected from the end side of the body side mounting portion 15 to a different end side, and the rib 30 is the body side mounting portion. Since it is arranged between the 15 and the connecting portion 13 and at least a part thereof is integrally configured with the connecting portion 13, the body side mounting portion 15 to be attached to the body side through hole provided in the vehicle body is a door side through hole. It is possible to prevent it from interfering and turning. In particular, when the body-side mounting portion 15 is inserted through the door-side through hole provided on the door side of the vehicle body, it is possible to prevent the body-side mounting portion 15 from interfering with the door-side through hole and rolling up.

More specifically, since the rib 30 intersects the insertion direction (vertical direction H) of the wire harness 100 and is erected from one end side to the other end side of the width direction W in the body side mounting portion 15, the body side. Even when the mounting portion 15 and the door-side through hole interfere with each other, the rib 30 can receive the external force F acting on the body-side mounting portion 15.

Further, since a part of the rib 30 is integrally configured with the connecting portion 13, a part of the external force F received by the rib 30 can be dispersed in the connecting portion 13, so that the rib 30 can be reinforced more firmly. As a result, it is possible to prevent the body-side mounting portion 15 from rolling due to the action of the external force F.

Furthermore, the rib 30 intersects the insertion direction (vertical direction H) of the wire harness 100 in the body side mounting portion 15, and is erected from one end side to the other end side of the width direction W in the body side mounting portion 15. Therefore, that is, since the rib 30 connecting to the connecting portion 13 is erected along the width direction W on the upper surface of the body side mounting portion 15, the body side mounting portion 15 can be made compact and inserted into the door side through hole. It is possible to prevent the body-side mounting portion 15 of the grommet 10 from interfering with the door-side through hole.

In this way, when the grommet 10 is inserted into the door side through hole, it is possible to prevent the body side mounting portion 15 of the grommet 10 to be inserted into the door side through hole from interfering with the door side through hole, and the body side mounting portion. Even when the door 15 and the door-side through hole interfere with each other, it is possible to prevent the body-side mounting portion 15 from being rolled up by the external force F acting on the body-side mounting portion 15. Therefore, it is possible to prevent a gap from being generated between the body-side mounting portion 15 and the panel in the mounted state.

Further, the body-side mounting portion 15 is formed in an oval shape having a long axis along the longitudinal direction L of the grommet main body 11, and the connecting portion 13 is configured to be curved in an arc shape with respect to the longitudinal direction L. The rib 30 is arranged along the short axis direction of the body side mounting portion 15, that is, in the width direction W, and on the outside of the connecting portion 13 in the bending direction (+ L direction side), so that the rib 30 is provided on the body side in an oval shape. The winding of the mounting portion 15 can be reliably prevented.

More specifically, since the connecting portion 13 on the inside of the connecting portion 13 in the bending direction (-L direction side) is close to the connecting portion 13 on the body side, the body side mounting portion 15 is attached to the connecting portion 13 side. Even if an external force F, that is, an external force F in the direction in which the body-side mounting portion 15 is rolled up acts, the body-side mounting portion 15 is unlikely to be rolled up.

Further, since the rib 30 is arranged on the outside of the body side mounting portion 15 in the bending direction (+ L direction side), an external force F to the connecting portion 13 side is applied to the body side mounting portion 15 on the outside of the bending direction (+ L direction side). Even when it acts, the rib 30 arranged on the outside of the body side mounting portion 15 in the bending direction (+ L direction side) receives an external force F, so that the outside of the body side mounting portion 15 in the bending direction (+ L direction side) is affected. It is possible to prevent it from rolling upward.

Further, even when an external force F on the connecting portion 13 side acts on one end or both ends of the body side mounting portion 15 in the width direction W, the rib 30 configured over the width direction W receives the external force F. , Both ends of the body-side mounting portion 15 in the width direction W can be prevented from being rolled upward.

In this way, the body-side mounting portion 15 is configured over the width direction W, and the rib 30 arranged outside the bending direction of the connecting portion 13 allows the body-side mounting portion 15 provided in the oval shape to be rolled up. Can be prevented.

The rib 30 is
A flat rib upper surface 31 is provided on the body side mounting portion 15 side in the insertion direction (vertical direction H) through which the wire harness 100 is inserted into the connecting portion 13, that is, in the + H direction of the rib 30, and the connecting portion 13 is provided. The outside in the bending direction is connected to the rib upper surface 31 and is connected to the body side mounting portion 15 via the rib 30, so that the grommet 10 is inserted into the door side through hole, for example, with respect to the body side mounting portion 15. Even when the external force F is applied, the external force F can be dispersed on the rib upper surface 31, and the body-side mounting portion 15 can be reliably prevented from being rolled up.

Further, since the rib upper surface 31 is formed close to both end portions of the body side mounting portion 15 in the width direction W, it is possible to give thickness to both end portions of the rib 30. As a result, the rib 30 can reinforce both end portions of the body side mounting portion 15, and even when an external force F on the connecting portion 13 side acts on both end portions of the body side mounting portion 15, the rib 30 exerts an external force F. It can be received, and it is possible to more reliably prevent both end portions of the body side mounting portion 15 from being rolled up.

Further, since the rib upper surface 31 is connected to the connecting portion 13 at the center of the width direction W, the external force acting on the rib 30 provided with the rib upper surface 31 is evenly applied to both sides of the rib 30 in the width direction W. Since it can be dispersed, it is possible to more reliably prevent the body-side mounting portion 15 from being rolled up.

Furthermore, since the rib upper surface 31 is connected so as to cover the body side mounting portion 15 to divide the rib upper surface 31 into two, the body side mounting portion 15 is the external force even when an external force acts on the rib 30. It is possible to receive the stress, and it is possible to prevent the body side mounting portion 15 from being rolled up more reliably.

Further, from the insertion space side of the rib 30, that is, the lower surface (−H direction side) of the rib 30, a plate-shaped tape fixing extending along the width direction W in the horizontal width direction and along the vertical direction H in the vertical width direction. By providing the portion 40, the wire harness 100 is fixed even when the tape fixing portion 40 is pulled in the extending direction in which the tape fixing portion 40 extends and the grommet 10 is inserted through the through hole on the door side. It is possible to prevent the body-side mounting portion 15 from being rolled up by the tensile force I that pulls the tape fixing portion 40.

Specifically, when the tape fixing portion 40 for fixing the wire harness 100 is pulled, the rib 30 receives the tensile force I, and a part of the tensile force I is dispersed in the connecting portion 13, so that the tensile force I It is possible to suppress the deformation of the body side mounting portion 15 due to the above. Therefore, the width direction W of the body-side mounting portion 15 is not deformed so as to warp upward, and the body-side mounting portion 15 can be prevented from being rolled up.

Further, since the connecting portion 13 can be reinforced by providing the connecting portion 13 at a predetermined distance from the rib 30 and providing the reinforcing portion 50 along the bending direction, the external force F is applied to the body side mounting portion 15. Can be suppressed from acting and deforming.

Specifically, when the tape fixing portion 40 fixing the wire harness 100 is pulled downward (in the −H direction), the tape fixing portion 40 integrally configured with the rib 30 pulls the connecting portion 13 via the rib 30. However, by providing the reinforcing portion 50, it is possible to suppress the deformation of the connecting portion 13. Therefore, the external force F received by the rib 30 can be reliably distributed to the connecting portion 13, and the body-side mounting portion 15 can be prevented from being deformed.

Further, even in the mounted state in which the body-side mounting portion 15 is mounted in the body-side through hole, deformation of the connecting portion 13 due to an unintended external force can be suppressed, so that the body-side mounting portion 15 mounted in the body-side through hole can be rolled up. Can be prevented.

Further, by providing the flat tip flat portion 151 on the tip end side of the rib 30 in the body side mounting portion 15, it is possible to prevent the plate thickness on the tip end side of the rib 30 in the body side mounting portion 15 from becoming thick. The grommet 10 can be easily inserted into the through hole on the door side, and the weight of the grommet 10 can be reduced.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The electric wire corresponds to the wire harness 100, and similarly,
The mounting part corresponds to the body side mounting part 15 and
The curved connecting portion corresponds to the connecting portion 13 and
The rib flat surface portion corresponds to the rib upper surface 31, but
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 14 and the body-side mounting portion 15 are configured to have a plan-viewing circular shape and a plan-viewing oval shape, respectively, but the shape is not limited to these shapes, for example, in plan-viewing. It may have an elliptical shape or a rectangular shape, and the door side mounting portion 14 and the body side mounting portion 15 may have the same shape.

Further, in the present embodiment, one reinforcing portion 50 is provided on the connecting portion 12, 13 + W direction side, but for example, one reinforcing portion may be provided along the ± W direction side, or a plurality of reinforcing portions 50 may be provided. Furthermore, the reinforcing portion 50 may be provided on the outside in the bending direction (+ L direction side), the inside in the bending direction (−L direction side), or both of the ribs 30.

Further, in the present embodiment, the rib 30 is configured to have a square shape along the width direction W, but it is not necessary to limit the rib 30 to this shape. It may have a convex arc shape, or may have a different shape, for example, as shown in FIG.
Hereinafter, the grommet 10a provided with the different ribs 30a will be described in detail. Of the grommets 10a, the same components as those of the grommet 10 are designated by the same reference numerals, and the description thereof will be omitted.

Like the grommet 10, the grommet 10a is composed of a grommet main body 11, connecting portions 12, 13 and a door side mounting portion 14 and a body side mounting portion 15, and the body side mounting portion 15 is provided with ribs 30a. There is.

The rib 30a has a rib upper surface 31a integrally formed with the connecting portion 13, a rib side surface 32a extending from both ends of the rib upper surface 31a to both ends of the body side mounting portion 15, and a + L direction side of the rib upper surface 31a and the rib side surface 32a. It is composed of a rib front surface 33a formed in.

The rib upper surface 31a is formed in a planar shape having a predetermined width in the longitudinal direction L, which is arranged in the central portion in the width direction W.
The rib side surface 32a is arranged so as to be inclined toward both ends of the body side mounting portion 15 so as to form an isosceles trapezoid shape when viewed from the front, and has a shape that expands to the + L side toward the downward side. is doing.

The grommet 10a configured in this way has the same effect as the grommet 10, and since the rib side surface 32 is connected on the + L direction side of the body side mounting portion 15, it is possible to prevent the tip side from curling.
The rib side surface 32a does not necessarily have an isosceles trapezoidal shape in front view, but is preferably an isosceles trapezoidal shape in front view because the force received by the rib 30a can be evenly distributed.

1 Wire harness with grommet 10, 10a Grommet 11 Grommet body 13 Connecting part 15, 15a Body side mounting part 151 Tip flat part 30 Rib 31, 31a Rib upper surface 40 Tape fixing part 50 Reinforcing part 100 Wire harness

Claims (8)

A tubular grommet body, which is exteriorized by an electric wire inserted through a through hole formed in the panel,
With a mounting part whose diameter is larger than that of the grommet body,
A grommet provided on one end side of the grommet main body and composed of a connecting portion for connecting the mounting portion and the grommet main body, and having an insertion space for inserting the electric wire inside.
The mounting part is
A rib is erected from the end side of the mounting portion to a different end side so as to intersect the insertion direction of the electric wire.
The rib is arranged between the mounting portion and the connecting portion, and at least a part thereof is integrally formed with the connecting portion.
The mounting portion is formed in an oval shape having a long axis along the longitudinal direction of the grommet body, and is formed in an oval shape.
The connecting portion is composed of a curved connecting portion curved in an arc shape with respect to the longitudinal direction.
A grommet in which the ribs are arranged along the minor axis direction of the mounting portion and at an end portion of the connecting portion between the mounting portion and the curved connecting portion on the outer side in the bending direction of the curved connecting portion . The rib is
A flat rib flat surface portion is provided on the curved connecting portion side in the insertion direction.
The curved connecting portion is connected to the rib flat surface portion on the outside in the bending direction and is connected to the mounting portion via the rib.
The grommet according to claim 1. The rib flat surface portion
At the center of the mounting portion in the minor axis direction, it was connected to the outside of the curved connecting portion in the bending direction.
The grommet according to claim 2. The rib flat surface portion was divided into two by the curved connecting portion.
The grommet according to claim 3. From the insertion space side of the rib, a plate-shaped tape fixing portion is provided so that the horizontal width direction is along the short axis direction and the vertical width direction extends along the insertion space.
The grommet according to any one of claims 1 to 4. At the curved connecting portion,
A reinforcing portion is provided along the curved bending direction of the curved connecting portion while separating the rib from the rib by a predetermined distance.
The grommet according to any one of claims 1 to 5. A flat tip flat portion is provided on the tip end side of the rib in the mounting portion.
The grommet according to any one of claims 1 to 6. The grommet according to any one of claims 1 to 7.
A wire harness with a grommet composed of a wire harness inserted through the grommet.

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