JP2015080366A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet capable of preventing the damage of a grommet body or each panel by interfering body a body panel or a back door panel.SOLUTION: A grommet 10 is composed of a cylindrical grommet body 11, and a body mounting portion 12 and a back door mounting portion 13 disposed at both ends of the grommet body 11 and mounted to a body panel 20 or the back door panel 30; and internally equipped with an insertion path 10a communicating the body mounting portion 12 and the back door mounting portion 13 through the grommet body 11 and permitting the insertion of a wire harness. The grommet body 11 is equipped with an abutting rib 11a projecting outward in a diametrical direction intersecting an axial direction X of the grommet body 11.

Description

  The present invention relates to a grommet that protects a bridging portion of the wire harness by inserting a bridging portion that bridges between a body panel of an automobile and a back door panel or the like in a wire harness routed in an automobile, for example.

  Conventionally, in a wire harness that electrically connects each device mounted on an automobile, a bridging portion that bridges between the body panel of the automobile and a back door panel that rotates relative to the body panel is inserted inside. And many grommets which protect the bridging part of the said wire harness are proposed.

For example, a grommet disclosed in Patent Document 1 includes a bellows tube portion, a bent tube portion continuous to the end portion of the bellows tube portion, and a large-diameter tube portion at the tip of the bent tube portion. It is arranged in a bent state so as to bridge the panel (body panel).
The grommet arranged in this way is supposed to protect the bridging portion of the wire harness inserted inside.

  However, the grommet disclosed in Patent Document 1 is damaged when the panel and the grommet interfere with each other, for example, the door is bent each time the open state and the closed state are repeatedly repeated and scratched with the panel. There is a risk of sticking.

  Such a situation is not only when the door is opened / closed, but also when the grommet is simply arranged, or due to the vibration of the engine or the vibration during traveling, the interference between the grommet body and the panel as described above. May occur.

JP 2011- 211809 A

  Then, an object of this invention is to provide the grommet which can prevent the grommet main body and the damage | wound of another member by interference with other members, such as a panel.

  The present invention is composed of a cylindrical grommet main body and mounting portions that are disposed at both ends of the grommet main body and are attached to other members, and the mounting portions communicate with each other through the grommet main body. The grommet has an insertion passage that allows the wire harness to be inserted therein, and the grommet body includes a rib projecting radially outward in a direction intersecting the axial direction of the grommet body. It is characterized by.

The ribs described above can be ribs formed over the entire circumference in the cross-sectional direction of the grommet body, ribs formed in a part of the cross-section, or a plurality of ribs arranged with a gap in the cross-sectional direction.
In addition, the other member is a panel constituting a door such as a body panel or a back door panel constituting a body of an automobile.

  Furthermore, crossing the above-described axial direction means, for example, a direction with respect to the axial direction in which the rib can protrude in the radial direction of the grommet body, such as a direction orthogonal to the linear axial direction or a normal direction to the curved axial direction. It can be.

  The axial direction is the direction of the central axis of the cylindrical grommet body. When the grommet body is linear, it coincides with the longitudinal direction of the grommet body, and when the grommet body is curved, the direction of bending. It is the direction that matches. Therefore, for example, when the grommet body is curved in an arc shape, the direction is along the central axis of the grommet body curved in the arc shape. In other words, the axial direction is a direction that coincides with a direction that continuously connects the centers of the grommet bodies in a plurality of orthogonal cross sections orthogonal to the grommet body.

According to the present invention, the grommet can prevent the grommet main body and other members from being damaged due to interference between the grommet main body and the other members.
More specifically, for example, the other member is an automobile body panel and a back door panel that rotates with respect to the body panel, one of the attachment portions provided at both ends of the grommet body is attached to the body panel, and the other is When attached to the back door panel, the grommet is equipped with a rib on the grommet body, so that the grommet body is held away from the body panel and back door panel even if the back door panel rotates and the grommet is deformed. Can do.

  The grommet that can hold the grommet body at a position separated from the body panel or back door panel by the rib can prevent the body panel or back door panel from interfering with the grommet body, and can prevent the grommet body from being damaged. The wire harness can be reliably protected.

In addition, the body panel or back door panel and the grommet are in contact with the ribs provided on the grommet body, so that the entire grommet body interferes with the body panel and back door panel compared to the case where the entire grommet body contacts and interferes with the body panel or back door panel. The range to do can be reduced.
Accordingly, it is possible to prevent the grommet main body, or the damage due to the body panel or the back door panel from being scratched.

According to the aspect of the present invention, the abutment surface of the rib that abuts against other components can be configured as an arc surface.
According to the present invention, the other member and the rib do not hit an acute angle, and the other member can be prevented from being damaged due to contact with the rib.

More specifically, for example, a rib whose abutment surface is not composed of an arcuate surface abuts against other members at a sharper angle than a rib whose abutment surface is composed of an arcuate surface as in the present invention. Other members that come into contact may be easily damaged.
However, since the contact surface of the rib in the present invention is configured by an arc surface, it is possible to prevent the other members from being damaged.

Further, according to the aspect of the present invention, the ribs can be arranged at a predetermined interval in the axial direction.
The rib described above is a concept that includes a plurality of ribs as well as two ribs that are spaced apart from the grommet body.
In addition, the predetermined interval described above may be an equal interval or an uneven interval.

By this invention, it can prevent reliably that a grommet main body and another member interfere and a grommet main body and another member are damaged.
More specifically, for example, even when the uneven portion including the burr by welding is in another member, the grommet is arranged at predetermined intervals by arranging the ribs at predetermined intervals so as to straddle the uneven portion. It is possible to reliably separate the grommet body in the vicinity of the ribs arranged with a distance from the uneven portions of the other members.

A grommet provided with such ribs can reliably prevent interference between other members and the grommet body.
Accordingly, it is possible to reliably prevent the grommet body and other members from being damaged.

  Further, according to an aspect of the present invention, at least one end side of the grommet body is provided with a bendable portion that can be bent in a direction intersecting the axial direction, and the gap between the ribs in the grommet body is inflexible. Part.

  The bendable portion described above includes a linear, curved, bent, bent, or bellows-shaped cylindrical portion, and can be made inflexible by reducing the thickness or changing the material. Including the concept of being able to turn more aggressively.

  The inflexible part includes a straight, curved, bent, or bent cylindrical part, and it can be bent unintentionally by forming a rib, increasing the thickness, or changing the material. This is a concept that includes bending by its own weight or the like, or deforming by intentionally applying a load.

According to the present invention, the grommet can hold the grommet body unintentionally without bending at a position apart from the other members, and can more reliably prevent interference between the grommet body and the other members.
More specifically, for example, even when ribs are arranged at predetermined intervals so as to straddle the concavo-convex portion with respect to other members having concavo-convex portions including burrs by welding, the grommet main body is between the ribs. There is a possibility that the grommet main body and the concavo-convex part interfere with each other because they are unintentionally bent.

  However, by configuring the ribs with inflexible portions, the grommet can prevent interference between the grommet main body and other members without bending the grommet main body unintentionally between the ribs straddling the concavo-convex portion. It can prevent reliably and it can prevent more reliably that a grommet main body and another member are damaged.

  Further, for example, the other member is an automobile body panel and a back door panel that rotates with respect to the body panel, one of the attachment portions provided at both ends of the grommet body is attached to the body panel, and the other is the back door panel. When the grommet body is provided with a bendable part on at least one end side of the grommet body, the grommet mounting part and the grommet body attached to other members can be bent according to the rotation of the back door. Therefore, when the back door is opened and closed, an unintended load does not act on the grommet, and the grommet can be prevented from being damaged.

Moreover, according to the aspect of the present invention, the inflexible portion can be configured by a linear straight inflexible portion.
According to the present invention, the grommet can be used even in a narrow space. Furthermore, the material required to form the grommet can be reduced.

  More specifically, for example, the other member is an automobile body panel and a back door panel that rotates with respect to the body panel, one of the attachment portions provided at both ends of the grommet body is attached to the body panel, and the other is When attached to the back door panel, the inflexible part is formed in a straight line in the narrow space between the body panel and the back door panel, so that the grommet can be used even in a space that cannot be placed in the curved inflexible part. Can be arranged.

  In addition, since the grommet bridges the insertion holes formed in the body panel and the back door panel in order to insert the wire harness, the grommet configured by the linear inflexible portion as in the present invention has a curved shape. The bridging path can be made shorter than that of the grommet constituted by the inflexible portion, and the material necessary for forming the grommet can be reduced.

  Further, according to an aspect of the present invention, the rear opening of the rear portion of the automobile is closed, and the vehicle is surrounded by a back door panel provided so as to be pivotable in the vertical direction and a body panel that forms the rear opening, along the rear opening. Among the narrow spaces formed in the above, in the upper narrow space at the top, one of the attachment portions provided at both ends of the grommet body is attached to the body panel, and the other is attached to the back door panel, and the grommet body is And in a sleeping position along the body panel, and the predetermined interval is set so as to straddle the concave or convex uneven portion of the body panel, and the rib is disposed in the axial direction of the grommet body. It can be provided so as to protrude to the body panel side in the orthogonal direction.

According to the present invention, in the upper narrow space, the grommet body can reliably prevent interference with the concavo-convex portion of the body panel.
In detail, the grommet body that is placed on the upper surface of the body panel in the upper narrow space of the upper part of the narrow space surrounded by the body panel and the back door panel at the rear part of the automobile is the uneven part. When the grommet body and the uneven part of the body panel interfere with each other due to its own weight acting, for example, the contact pressure increases and the grommet body may be seriously damaged compared with the case where the grommet body interferes without acting on its own weight. There is.

  However, the grommets are spaced apart from the body panel by separating the predetermined interval so as to straddle the concavo-convex portion and arranging ribs so as to protrude toward the body panel in a direction orthogonal to the axial direction of the grommet body. The grommet body can be held.

  In this way, the grommet main body held at a position separated from the body panel by the rib protruding in the body panel side does not interfere with the body panel and prevents the grommet main body and the body panel from being damaged. Can do.

  ADVANTAGE OF THE INVENTION By this invention, the grommet which can prevent the grommet main body and the damage | wound of another member by interference with other members, such as a body panel, can be provided.

The perspective view of a grommet. The side view of a grommet. Sectional drawing showing the use condition of a grommet. The perspective view showing the state before use of a grommet. The perspective view showing the use condition of a grommet.

An embodiment of the present invention will be described below with reference to the drawings.
1 shows a perspective view of the grommet 10, FIG. 2 shows a side view of the grommet 10, FIG. 3 shows a cross-sectional view showing the state of use of the grommet 10, and FIG. 4 shows a perspective view of the state of the grommet 10 before use. FIG. 5 is a perspective view showing a usage state of the grommet 10.

  3 to 5 do not show the inner panel of the body panel 20, the outer panel of the back door panel 30, the trim, and the like, and the body panel 20 and the back door panel 30 are simplified for easy understanding. Yes. 4 and 5 show a state in which the back door panel 30 is rotated with respect to the body panel 20 and opened.

  The grommet 10 in the present embodiment is surrounded by a body panel 20 that forms a rear opening and a back door panel 30 of a back door that closes the rear opening in an automobile having an opening at the rear (not shown, hereinafter referred to as a rear opening). The upper narrow space 32 (see FIG. 3) is disposed.

And the grommet 10 is attached so that the body panel 20 and the back door panel 30 may be bridged, and protects the wire harness (illustration omitted) penetrated by the electric wire insertion path 10a.
The grommet 10 is disposed in a sleeping position along the body panel 20 that forms the lower part of the upper narrow space 32.

  As shown in FIGS. 1 and 2, the grommet 10 includes a cylindrical grommet main body 11, a body mounting portion 12 disposed at one end of the grommet main body 11, and a back door mounting portion 13 disposed at the other end. doing. And inside the grommet 10, it has the electric wire insertion path 10a which accepts insertion of a wire harness.

  The grommet main body 11 includes a first abutment rib 11a1 disposed on the body mounting portion 12 side of the abutment rib 11a projecting radially outward perpendicular to the axial direction X of the grommet main body 11, and a back door. A second abutment rib 11a2 arranged on the mounting portion 13 side, a reinforcing rib 11b projecting radially outward at an interval of about 90 degrees in the cross-sectional direction of the grommet body 11 along the axial direction X, and a grommet And a bellows-like bellows tube portion 11 c disposed at both ends of the main body 11.

  In the present embodiment, the axial direction X is a direction that coincides with the longitudinal direction of the linear grommet body 10.

Furthermore, the first grommet cylinder part 11e from the bellows cylinder part 11c on the body attachment part 12 side to the first abutment rib 11a1, and the second grommet cylinder between the first abutment rib 11a1 and the second abutment rib 11a2. The portion 11f and the third grommet tube portion 11g from the second abutment rib 11a2 to the bellows tube portion 11c on the back door attachment portion 13 side are linearly formed, and the bellows tube portion 11c and the first grommet tube portion 11e. And the grommet body 11 formed in a continuous cylinder shape with the second grommet cylinder part 11f and the third grommet cylinder part 11g is bendable in a direction intersecting the axial direction X, that is, a load is applied. The bellows-like bellows cylinder portion 11c is formed in the other part forming the grommet body 11 because it is integrally formed of the same material having the deformability that can be intentionally acted and deformed and bent. Remote it has a configuration to actively bent.
In other words, the other part forming the grommet body 11 is less deformable than the bellows cylinder part 11c.

  The first abutment rib 11a1 and the second abutment rib 11a2 project toward the body panel 20, and the first abutment surface 11d1 and the second abutment surface 11d2 that abut against the body panel 20 are arcuate surfaces. Yes. The first contact rib 11a1 and the second contact rib 11a2 are arranged at a predetermined interval in the axial direction X. The first contact rib 11a1 and the second contact rib 11a2 arranged at a predetermined interval in the axial direction X are provided in a range of about three quarters in the cross-sectional direction of the grommet body 11.

  The predetermined interval is an interval that can straddle the spot burr 22 (see FIG. 4B and FIG. 5) that occurs when the body panel 20 is spot welded. The arc-shaped outer edge of the first contact rib 11a1 is formed by an arc having a larger diameter than the arc-shaped outer edge of the second contact rib 11a2.

The body attachment portion 12 is formed in a shape that can be attached to a body insertion hole 21 (see FIG. 4) formed in the body panel 20 in order to insert the wire harness. Further, the body attaching portion 12 is provided with a cylindrical direction regulating cylinder portion 12a that is bent so as to bend the wiring path of the wire harness by about 90 degrees between the grommet body 11 and the body attaching portion 12. .
In addition, you may set the bending angle of the direction control cylinder part 12a suitably according to the wiring path | route of a wire harness.

  Similarly to the body attachment portion 12, the back door attachment portion 13 is formed in a shape that can be attached to a back door insertion hole 31 (see FIG. 4) formed in the back door panel 30 in order to insert the wire harness. .

Next, the usage method of the grommet 10 is demonstrated.
First, the wire harness inserted into the wire insertion passage 10a is inserted through the body insertion hole 21 formed in the body panel 20 at the end on the body attachment portion 12 side, and the end on the back door attachment portion 13 side is connected to the back. It is inserted through a back door insertion hole 31 formed in the door panel 30.
4 and 5, the body attachment portion 12 of the grommet 10 is attached to the body insertion hole 21, and the back door attachment portion 13 is attached to the back door insertion hole 31.

  The grommet 10 attached to the body panel 20 and the back door panel 30 in this way lays the grommet main body 11 along the upper surface of the body panel 20 in the upper narrow space 32 surrounded by the body panel 20 and the back door panel 30. Placed in a standing state.

Then, the effect of the grommet 10 is demonstrated.
The grommet 10 according to the present embodiment includes a contact rib 11 a that protrudes radially outward in the grommet main body 11 in a direction perpendicular to the axial direction X of the grommet main body 11, so that the grommet main body 11, the back door panel 20, It is possible to prevent the grommet body 11 and the body panel 20 from being damaged due to the interference.

  More specifically, the grommet 10 is provided with the abutment rib 11a on the grommet body 11, so that even if the back door panel 30 rotates relative to the body panel 20 and the grommet 10 is deformed, the grommet body 11 is attached to the body. It can be held at a position separated from the panel 20.

  The grommet 10 that can hold the grommet body 11 at a position separated from the body panel 20 by the contact rib 11a can prevent interference between the body panel 20 and the grommet body 11, and can prevent the grommet body 11 from being damaged. Therefore, the wire harness can be reliably protected.

Furthermore, since the body panel 20 and the grommet 10 abut on the abutment rib 11a provided on the grommet body 11, the grommet body 11 interferes with the body panel 20 as compared with the case where the entire grommet body 11 abuts on the body panel 20 and interferes. The range to do can be reduced.
Therefore, the grommet main body 11 and the body panel 20 can be prevented from being damaged due to scratching.

  In addition, the grommet 10 includes a first abutting surface 11d1 and a second abutting surface 11d2 that are in contact with the body panel 20 in the first abutting rib 11a1 and the second abutting rib 11a2 provided in the grommet main body 11, and arcuate surfaces. Since the contact rib 11a formed by the first contact rib 11a1 and the second contact rib 11a2 does not hit the body panel 20 at an acute angle, the body panel 20 can be prevented from being damaged. Can do.

More specifically, for example, a contact rib whose contact surface is not formed by an arc surface is a contact rib in which the first contact surface 11d1 and the second contact surface 11d2 are formed by arc surfaces as in this embodiment. Since the body panel 20 comes into contact with the body panel 20 at an acute angle rather than 11a, the body panel 20 with which the contact rib 11a contacts may be easily damaged.
However, since the first contact surface 11d1 and the second contact surface 11d2 of the contact rib 11a in the present embodiment are configured by arcuate surfaces, the body panel 20 can be prevented from being damaged.

  Further, the grommet 10 is configured such that the first contact rib 11a1 and the second contact rib 11a2 constituting the contact rib 11a provided in the grommet main body 11 are spot burr 22 of the body panel 20 in the axial direction X of the grommet main body 11. As a result, the grommet main body 11 and the spot burr 22 can be reliably prevented from being damaged due to interference with each other.

  Specifically, for example, even when the spot burr 22 by spot welding is formed on the body panel 20, the grommet 10 has the first abutment rib 11 a 1 and the second abutment rib so as to straddle the spot burr 22. By arranging 11a2 at a predetermined interval, the grommet body 11 in the vicinity of the contact rib 11a arranged at a predetermined interval can be reliably separated from the spot burr 22 in the body panel 20.

The grommet 10 provided with the contact rib 11a constituted by the first contact rib 11a1 and the second contact rib 11a2 can reliably prevent interference between the body panel 20 and the grommet body 11.
Accordingly, it is possible to reliably prevent the grommet body 11 and the body panel 20 from being damaged.

  In addition, since the grommet 10 includes the bellows cylinder portions 11 c at both ends of the grommet body 11, even if the back door panel 30 rotates with respect to the body panel 20, an unintended load does not act on the grommet 10. Therefore, damage to the grommet 10 can be prevented.

  More specifically, for example, when the grommet main body 11 is not provided with the bellows cylinder portion 11 c at both ends, the back door mounting portion 13 is moved with respect to the body mounting portion 12 when the back door panel 30 is rotated with respect to the body panel 20. By moving while twisting according to the rotation of the back door panel 30, the body mounting portion 12, the back door mounting portion 13, and the grommet main body 11, particularly the boundary portions of the respective portions, are twisted to move the back door mounting portion 13. Since the accompanying load acts, the grommet 10 may be bent or damaged.

  However, the back door panel 30 rotates with respect to the body panel 20 by providing the bellows-like bellows cylinder portion 11c that bends more actively than the other parts at both ends of the grommet body 11 in the present embodiment. Even if the back door attachment portion 13 moves while being twisted in response to the rotation of the back door panel 30 with respect to the body attachment portion 12, the bellows tube portion 11c is more actively bent than the other parts, and the back door attachment portion. Since the load caused by the twisting movement of 13 can be reduced, it is possible to prevent the grommet 10 from being unintentionally deformed such as being bent or damaged.

  Further, the grommet 10 is constituted by the linear grommet body 11 including the second grommet cylinder portion 11f, so that the grommet 10 can be used in the upper narrow space 32 and is necessary for forming the grommet 10. Material can be reduced.

  More specifically, in a narrow space sandwiched between the body panel 20 and the back door panel 30, the grommet body 11 is linear even in a space that cannot be arranged with a grommet formed of a curved grommet body. The grommet 10 can be arrange | positioned by forming in this.

  Further, since the grommet 10 bridges the body insertion hole 21 and the back door insertion hole 31 formed in the body panel 20 and the back door panel 30, the grommet 10 constituted by the linear grommet body 11 as in the present embodiment is For example, the bridging path can be made shorter than a grommet constituted by a curved grommet body, and the material required to form the grommet 10 can be reduced.

  In addition, the grommet 10 has a predetermined interval so as to straddle the spot burr 22, and the abutment rib 11 a is arranged so as to protrude orthogonally to the axial direction X of the grommet main body 11 and project toward the body panel 20. Interference with the spot burr 22 of the panel 20 can be reliably prevented.

  More specifically, the grommet body 11 arranged in a sleeping position on the upper surface of the body panel 20 in the upper narrow space 32 surrounded by the body panel 20 and the back door panel 30 at the rear part of the automobile is directed toward the spot burr 22. When the grommet body 11 interferes with the spot burr 22 of the body panel 20 due to the action of its own weight, for example, the contact pressure increases and the grommet body 11 is greatly damaged compared to the case where the grommet body 11 interferes with no action of its own weight. There is a risk of sticking.

  However, the grommet 10 has a predetermined interval so as to straddle the spot burr 22, and the abutment rib 11 a is arranged so as to protrude orthogonally to the axial direction X of the grommet body 11 and project toward the body panel 20. The grommet body 11 can be held at a position separated from the panel 20.

  Thus, the grommet main body 11 held at a position separated from the body panel 20 by the abutment rib 11a protruding toward the body panel 20 with respect to the grommet main body 11 does not interfere with the body panel 20. Further, the grommet body 11 and the body panel 20 can be prevented from being damaged.

  Further, the grommet 10 includes the reinforcing rib 11b formed along the axial direction X in the grommet body 11, thereby suppressing unintended bending of other parts forming the grommet body 11 excluding the bellows cylinder portion 11c. Can do.

  More specifically, the grommet body 11 is made of the same material having a bendability that can be bent in a direction crossing the axial direction X, that is, a deformability that can be deformed and bent by intentionally applying a load. Since the bellows tube portion 11c formed in a bellows shape is a so-called bendable portion that can be more actively bent than other portions forming the grommet body 11, the grommet body The other part which forms 11 is what is called an inflexible part which suppresses the bending which is not intended by providing the grommet main body 11 with the reinforcing rib 11b formed along the axial direction X. FIG.

  In the grommet body 11 configured as described above, when the back door panel 30 rotates with respect to the body panel 20, the load associated with the torsional movement of the back door attachment portion 13 attached to the back door panel 30 causes the bellows cylinder portion 11c. It can be suppressed by the bellows cylinder part 11c which is a bendable part bent more actively than the other site | part which is transmitted to the other site | part which forms the grommet main body 11 except. Furthermore, even if the load accompanying torsional movement is transmitted to other parts, the other parts reinforced by the reinforcing rib 11b are not easily bent, and the unintended bending of the other parts can be further suppressed.

  Further, the grommet 10 has an arc-shaped outer edge of the first abutting rib 11a1 out of the abutting ribs 11a provided in the grommet body 11, and an arc having a larger diameter than the arc-shaped outer edge of the second abutting rib 11a2. By forming, it can suppress that a big load is applied to the bellows cylinder part 11c by the side of the back door attaching part 13, and the grommet main body 11 deform | transforms.

  More specifically, when the grommet body 11 is placed on the body panel 20, the grommet body 11 is disposed in an inclined state with respect to the body panel 20 due to the difference in size between the first contact rib 11a1 and the second contact rib 11a2. The

  The bellows cylinder portions 11c and 11c on both sides of the grommet main body 11 arranged in such an inclined state avoid the interference between the grommet main body 11 and the spot burrs 22, and the bellows cylinder portion on the back door mounting portion 13 side. 11c can be slightly bent toward the body panel 20 side. In this case, the bellows tube portion 11c can be arranged so as to swell in the direction of retreating from the wire harness inserted through the back door attachment portion 13.

  For this reason, for example, even when a wire harness with a relatively large wire diameter is used, the bellows tube portion 11c is slightly curved so that the pressing force generated by the rigidity of the wire harness can be reduced. As a result, deformation of the grommet 10 can be suppressed.

  Furthermore, the grommet 10 can suppress the grommet 10 from being greatly curved from the body mounting portion 12 to the grommet body 11 by providing the body mounting portion 12 with the direction regulating cylinder portion 12a.

  More specifically, the bellows cylinder portion 11c can be prevented from being greatly bent by the rigidity of the wire harness inserted into the grommet 10, and interference with the back door panel 30 can be prevented. That is, it is possible to prevent the grommet 10 and the back door panel 30 from being damaged due to interference with the back door panel 30.

In correspondence between the configuration of the present invention and the above-described embodiment,
The insertion passage of this invention corresponds to the wire insertion passage 10a,
Similarly,
The ribs correspond to the contact rib 11a, the first contact rib 11a1, and the second contact rib 11a2.
The bendable part corresponds to the bellows cylinder part 11c,
The contact surfaces correspond to the first contact surface 11d1 and the second contact surface 11d2,
The inflexible part and the straight inflexible part correspond to the second grommet cylinder part 11f,
The attachment portions correspond to the body attachment portion 12 and the back door attachment portion 13,
Other members correspond to the body panel 20 and the back door panel 30,
The uneven part corresponds to the spot burr 22,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, the grommet 10 according to this embodiment includes the direction restricting cylinder portion 12a in the body attachment portion 12, but may be appropriately provided not only in the body attachment portion 12 but also in the back door attachment portion 13.
More specifically, in this embodiment, the abutment rib 11 a provided in the grommet main body 11 is disposed at a position close to the back door mounting portion 13, so that the grommet 10 has a direction regulating cylinder portion on the back door mounting portion 13. Even if not provided, the abutment rib 11a did not interfere with the grommet body 11 and the body panel 20.

  However, for example, when the abutment rib 11a is disposed at a position away from the back door attachment portion 13, the bellows cylinder portion 11c on the back door attachment portion 13 side is greatly curved due to the rigidity of the wire harness inserted therein. The grommet body 11 may interfere with the body panel 20.

  In the above case, it is desirable that the back door mounting portion 13 also includes the direction regulating cylinder portion 12a, and the bellows cylinder portion 11c is greatly curved by providing the back door mounting portion 13 with the direction regulating cylinder portion 12a. However, it is possible to prevent rubbing between the grommet body 11 and the body panel 20 and to prevent the grommet body 11 and the body panel 20 from being damaged.

Further, in the grommet 10, the setting range of the contact rib 11a is set to about three quarters in the cross-sectional direction of the grommet body 11, but the setting range of the contact rib may be set as appropriate.
More specifically, if a contact rib is provided at least in a place where there is a possibility of interference with the body panel 20 or the like, the contact rib is a contact rib formed over the entire circumference in the cross-sectional direction of the grommet body 11, or A part of the contact ribs may be formed, or a plurality of contact ribs arranged with a gap in the cross-sectional direction.

  In addition, the grommet 10 includes the abutment rib 11a protruding outward in the radial direction orthogonal to the axial direction X. For example, the abutment rib is in the radial direction in the grommet body 11 such as a direction intersecting the axial direction X. It can be set as the direction with respect to the axial direction X that can project.

  The grommet 10 has the first abutment rib 11a1 formed slightly larger than the second abutment rib 11a2, but the first abutment rib 11a2 is formed larger than the first abutment rib 11a1 even if the second abutment rib 11a2 is formed larger than the first abutment rib 11a1. The contact rib 11a1 and the second contact rib 11a2 may be formed in the same size.

  In addition, the grommet 10 has a plurality of contact ribs as well as two contact ribs 11a formed of a first contact rib 11a1 and a second contact rib 11a2 spaced apart from the grommet body 11 by a predetermined distance. The intervals between the contact ribs may be equal or even. That is, you may set suitably according to edges, such as a burr | flash which may interfere.

  Further, the grommet 10 has the second grommet cylinder portion 11f formed in a linear shape, but is configured not only in a linear shape but also in a curved shape, a bent shape, or a bent shape according to the upper narrow space 32 in which the grommet 10 is disposed. May be. That is, the grommet body 11 may be formed in an appropriate shape depending on the shape of the body panel 20 and the back door panel 30 that form the upper narrow space 32.

  Further, the grommet 10 is made of a material having a bendability that can be bent in a direction intersecting the axial direction X, that is, a deformable material that can be deformed and bent by intentionally applying a load. The grommet body 11 is integrally formed, and the reinforcing rib 11b is provided to suppress unintended bending, but the first grommet cylinder part 11e excluding the bellows cylinder part 11c that is positively bent, the second grommet cylinder part 11f, Of the third grommet cylinder part 11g, at least the second grommet cylinder part may be formed of an inflexible material that does not cause unintended bending in the direction intersecting the axial direction X.

  A grommet formed of such a material and having a grommet body eliminates the need for a reinforcing rib, reduces the weight and material cost of the grommet, and further reinforces the grommet body with respect to the outer peripheral surface of the grommet body. For example, not only can the interference between the body panel 20 and the grommet body be prevented, but also the interference between the spot burr 22 of the body panel 22 and the grommet body can be prevented more reliably. be able to.

  The inflexibility is to prevent unintended bending in a direction intersecting the axial direction X, but it can be bent by its own weight or can be deformed to a desired shape by intentionally applying a load. Including concept.

DESCRIPTION OF SYMBOLS 10 ... Grommet 10a ... Electric wire insertion path 11 ... Grommet main body 11a ... Contact rib 11a1 ... 1st contact rib 11a2 ... 2nd contact rib 11b ... Reinforcement rib 11c ... Bellows cylinder part 11d1 ... 1st contact surface 11d2 ... 1st 2 contact surface 11e ... 1st grommet cylinder part 11f ... 2nd grommet cylinder part 11g ... 3rd grommet cylinder part 12 ... Body attachment part 12a ... Direction control cylinder part 13 ... Back door attachment part 20 ... Body panel 21 ... Body insertion Hole 22 ... Spot burr 30 ... Back door panel 31 ... Back door insertion hole 32 ... Upper narrow space X ... Axial direction

Claims (6)

A cylindrical grommet body,
It is arranged at both ends of the grommet body, and is composed of attachment parts that are attached to other members,
The grommet is provided with an insertion passage that allows the wire harness to be inserted therein, and allows the attachment portions to communicate with each other through the grommet body.
In the grommet body,
A grommet provided with a rib projecting radially outward in a direction intersecting the axial direction of the grommet body. The grommet according to claim 1, wherein an abutment surface of the rib that abuts against other components is an arc surface. The grommet according to claim 1 or 2, wherein the ribs are arranged at a predetermined interval in the axial direction. A bendable portion that can be bent in a direction intersecting the axial direction is provided on at least one end side of the grommet body,
The grommet according to claim 3, wherein a space between the ribs in the grommet body is an inflexible portion. The grommet according to claim 4, wherein the inflexible part is a straight straight inflexible part. A narrow space formed along the rear opening, which is enclosed by a back door panel that is provided so as to be able to rotate in the vertical direction and a rear panel that closes the rear opening of the rear part of the automobile, and that is formed along the rear opening. Among them, in the upper narrow space at the top,
One of the attachment portions provided at both ends of the grommet body is attached to the body panel, and the other is attached to the back door panel,
While arranging the grommet body in a sleeping position along the body panel,
The predetermined interval is set so as to straddle the concave or convex portion of the body panel,
The grommet according to claim 5, wherein the rib is provided so as to protrude toward the body panel in a direction orthogonal to the axial direction of the grommet body.

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