Grommet

Abstract

The objective is to provide a grommet that can prevent liquid that has entered the inside of the door-side panel from traveling along the grommet body and entering the inside of the body-side panel. [Solution] The grommet 1 comprises a grommet body 10 and a door-side inner 20 attached to one end of the grommet body 10. The grommet body 10 is provided with a cylindrical portion 11, a door-side mounting portion 12 connected to one end of the cylindrical portion 11 and attached to the door-side panel D, and a body-side mounting portion 13 connected to the other end of the cylindrical portion 11 and attached to the body-side panel B. The door-side mounting portion 12 is provided with an inner holding portion 121 that holds the door-side inner 20 and a mounting portion body 122 that connects the inner holding portion 121 and the cylindrical portion 11. The mounting portion body 122 is provided with a communication hole 126 that communicates with the cylindrical portion 11, and an annular wall portion 127 is provided on one end side between the communication hole 126 and the inner holding portion 121.

Description

Technical Field

[0001] This invention relates to a grommet for protecting, for example, a wire harness inserted therein.

Background Art

[0002] For example, a wire harness routed across a vehicle body and a door is inserted into a cylindrical grommet attached across insertion holes in order to prevent interference with and damage to the insertion holes provided in a panel (see Patent Document 1).

[0003] The grommet disclosed in Patent Document 1 can sandwich and hold a panel between the attachment portion provided at the end of the grommet body through which the wire harness is inserted and a grommet inner formed of a split body that can be divided into two parts. Thereby, it is possible to prevent the wire harness passing through the inside of the grommet from interfering with the peripheral edge of the insertion hole.

[0004] The grommet configured as described above can prevent liquid from entering inside with respect to water ingress from the outside of the panel. However, when liquid has entered the inside of the door-side panel, there has been a risk that the liquid may enter through the gap between the grommet inner and the attachment portion and reach the inside of the grommet body.

Prior Art Documents

Patent Documents

[0005] [[ID=3X]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The purpose of this invention is to provide a grommet that can prevent liquid that has entered the inside of the door-side panel from traveling along the grommet body and entering the inside of the body-side panel. [Means for solving the problem]

[0007] This invention is characterized in that it comprises a cylindrical grommet body through which a wire harness is routed, and a grommet inner attached to one end of the grommet body for holding the grommet body on a door-side panel provided on a movable door, the grommet body having a cylindrical portion through which the wire harness is routed from one end to the other, a door-side mounting portion connected to one end of the cylindrical portion and attached to the outer surface of the door-side panel, and a body-side mounting portion connected to the other end of the cylindrical portion and attached to the body-side panel, the door-side mounting portion having a cylindrical inner holding portion for holding the grommet inner, and a mounting portion body connecting the other end of the inner holding portion to one end of the cylindrical portion, the mounting portion body having a communication hole communicating with the cylindrical portion, and an annular wall portion erected between the communication hole and the inner holding portion toward the opposite side of the cylindrical portion.

[0008] This invention prevents liquid that has entered the inside of the door-side panel from traveling along the grommet body and entering the inside of the body-side panel. More specifically, a door-side mounting portion is connected to one end of a cylindrical portion, the other end of which is attached to a body-side mounting portion that is attached to a body-side panel. The mounting portion body of the door-side mounting portion has an annular wall portion that stands upright on the opposite side of the cylindrical portion between the communication hole through which a wire harness is inserted and the inner holding portion. As a result, even if liquid that has entered the inside of the door-side panel enters through a gap between the grommet inner held by the inner holding portion and the door-side mounting portion, the wall portion can block the liquid from flowing down the mounting portion body into the insertion hole. Therefore, it is possible to prevent liquid that has entered the inside of the door-side panel from flowing down the cylindrical portion of the grommet body and entering the inside of the body-side panel.

[0009] In an embodiment of this invention, the wall portion may protrude toward one end of the door-side panel when the door-side mounting portion is attached to the door-side panel. This invention allows the wall to more reliably contain liquid that has entered the inside of the door-side panel, even if it penetrates beyond the grommet liner towards the insertion hole. Therefore, it can more reliably prevent liquid from entering the body-side panel.

[0010] In another aspect of this invention, the inner retaining portion may have a lip that abuts against the outer surface of the door-side panel, erected toward the opposite side of the cylindrical portion, and the wall portion may be set higher than the height of the lip. This invention ensures that the height of the wall portion protruding more towards one end than the door-side panel is secured. Therefore, even if liquid that has entered the inside of the door-side panel enters the insertion hole side rather than the grommet inner, the wall portion can more reliably contain the liquid.

[0011] In another aspect of this invention, the wall portion may be set higher than the sum of the height of the lip and the thickness of the door-side panel. This invention allows for greater height of the wall portion that protrudes further toward one end than the door-side panel. Therefore, even if liquid that has entered the inside of the door-side panel enters the insertion hole side beyond the grommet inner, the wall portion can more reliably contain the liquid.

[0012] In another aspect of this invention, the grommet inner includes a cylindrical portion that is inserted into a through-hole provided in the door-side panel through which the wire harness is inserted, and the wall portion may be set to the same height as the cylindrical portion when the grommet inner is held by the grommet body.

[0013] With this invention, when the door-side mounting portion is attached to the door-side panel, the wall portion protrudes sufficiently beyond the door-side panel, thus more reliably preventing liquid that has entered the inside of the door-side panel from traveling along the cylindrical portion of the grommet body and entering the inside of the body-side panel.

[0014] In another aspect of this invention, one end of the cylindrical portion may be connected to the mounting portion body at an inclination, and the wall portion may be set to a height that runs along one end of the cylindrical portion and does not interfere with a virtual straight line passing through the center of the communication hole. This invention prevents the wire harness, which is routed along the cylindrical portion and extends toward the opposite side of the cylindrical portion, from interfering with the wall portion. Therefore, it is possible to prevent excessive restriction of the wire harness routing path on the opposite side of the cylindrical portion, and to more reliably prevent liquid that has entered the inside of the door-side panel from traveling along the cylindrical portion of the grommet body and entering the inside of the body-side panel.

[0015] In another aspect of this invention, the communication hole is formed in an oval shape when viewed from the mounting direction for attaching the door-side mounting part to the door-side panel, by connecting one end of the cylindrical part at an inclination to the mounting part body, and the wall part is configured in an oval shape having a major axis parallel to the major axis of the communication hole when viewed from the mounting direction. The aforementioned oval shape is an oval shape having a major axis along the direction in which the cylindrical portion is inclined relative to the mounting body as it moves from one end to the other end.

[0016] This invention makes it possible to prevent the wire harness, which is inserted through the cylindrical portion and extends from the communication hole from one end to the other end, from interfering with the wall portion, and also prevents the wall portion from hindering the process of holding the grommet inner to the inner holding portion.

[0017] In another aspect of this invention, one side of the long axis of the wall portion, which is configured in an oval shape corresponding to the direction in which the cylindrical portion is inclined with respect to the mounting portion body, may extend from the outer edge of the communication hole. According to this invention, since the wall portion is positioned closer to the communication hole on one side of the long axis where the wire harness passing through the cylindrical portion does not interfere, a gap can be secured between the inner holding portion and the wall portion on at least one side of the long axis. Therefore, the workability of attaching the grommet inner to the inner holding portion can be improved.

[0018] In another aspect of this invention, the other side of the long axis of the oval-shaped wall portion may be positioned at a predetermined distance from the outer edge of the communication hole. This invention ensures that a gap is secured between the inner retaining portion and the wall portion on one side of the long axis, and that a gap is secured between the outer edge of the communication portion and the wall portion on the other side of the long axis. As a result, space is secured on one side of the long axis for attaching the grommet inner to the inner mounting portion, and interference between the wire harness, which passes through the cylindrical portion and extends from the communication hole from one end to the other end, and the wall portion is further suppressed. Therefore, the workability of attaching the grommet inner to the inner retaining portion is improved, and interference between the wire harness and the wall portion on the inside of the door-side panel is further suppressed.

[0019] In another aspect of this invention, the mounting portion body may be configured in an oval shape having a major axis parallel to the major axis of the wall portion. According to the present invention, since the mounting portion main body and the wall portion are configured in an oval shape with their major axes parallel to each other, a gap between the wall portion and the inner holding portion can be ensured over the entire circumferential direction of the mounting portion main body. Therefore, in the operation of attaching the grommet inner to the inner holding portion, the interference of the wall portion with the attachment of the grommet inner can be suppressed, and thus the grommet inner can be easily held by the inner holding portion.

[0020] As an aspect of the present invention, the grommet inner may be composed of a plurality of divided bodies that can be divided in a direction intersecting the insertion direction of the wire harness. According to the present invention, the grommet inner can be easily assembled to the wire harness, and in the grommet inner composed of divided bodies, it is possible to reliably prevent the liquid that intrudes from the gap formed between the divided bodies from flowing into the insertion hole. Therefore, while improving the assembly workability of assembling the grommet inner composed of divided bodies to the wire harness, it is possible to prevent the liquid that has intruded from the gap between the divided bodies from entering the inside of the body side panel.

Effect of the Invention

[0021] According to the present invention, it is possible to provide a grommet that can prevent the liquid that has entered the inside of the door side panel from passing through the grommet main body and entering the inside of the body side panel.

Brief Description of the Drawings

[0022] [Figure 1] Schematic perspective view of the grommet. [Figure 2] Schematic exploded perspective view of the grommet. [Figure 3] Explanatory drawing of the grommet main body. [Figure 4] Explanatory drawing of the grommet main body. [Figure 5] Explanatory drawing of the grommet inner. [Figure 6] Schematic side view of the grommet attached to the panel. [Figure 7]A schematic, enlarged cross-sectional view of a grommet attached to a panel. [Modes for carrying out the invention]

[0023] One embodiment of this invention will be described below with reference to Figures 1 to 7. Figure 1 shows a schematic perspective view of grommet 1, and Figure 2 shows a schematic exploded perspective view of grommet 1. Figures 3 and 4 show explanatory diagrams of the grommet body 10, and Figure 5 shows an explanatory diagram of the door-side inner 20. Figure 6 shows an explanatory diagram of grommet 1 attached to body-side panel B and door-side panel D, and Figure 7 shows an enlarged cross-sectional view of the portion of grommet 1 attached to body-side panel B and door-side panel D that corresponds to the door-side mounting portion 12.

[0024] Figures 3 to 5 will be described in detail. Figure 3(a) shows a schematic side view of the grommet body 10, and Figure 3(b) shows a schematic top view of the grommet body 10. Figure 4(a) shows a cross-sectional view taken along arrow AA in Figure 3(b), and Figure 4(b) shows an enlarged cross-sectional view of the door-side mounting portion 12 in Figure 4(a). Figure 5(a) shows a schematic top view of the door-side inner 20, Figure 5(b) shows a schematic top view of the pair of divided parts 40 that constitute the door-side inner 20, and Figure 5(c) shows a schematic side view of the pair of divided parts 40.

[0025] Figure 7 shows a cross-sectional view corresponding to the view taken along arrow AA in Figure 3(b). In addition, in Figure 7, to clarify the structure of grommet 1, the wire harness WH inserted through grommet 1 is shown with a dashed line and is represented as if the wire harness WH were transparent.

[0026] Here, the vertical direction in Figure 1 is defined as the height direction H, and the direction perpendicular to the height direction H and along the direction in which the cylindrical portion 11 extends inclined relative to the door-side mounting portion 12 is defined as the first direction L. The direction perpendicular to both the first direction L and the height direction H is defined as the second direction W. In Figure 1, the right side along the first direction L is defined as the right side LA, the left side as the left side LB, the downward side along the height direction H is defined as the downward side HD, and the upward side as the upward side HU. The same applies to the corresponding directions in Figures 2 to 7.

[0027] The grommet 1 is an exterior component that protects the wire harness WH routed between the body-side panel B and the door-side panel D by inserting it into the grommet. More specifically, as shown in Figures 1 and 2, the grommet 1 comprises a grommet body 10 through which the wire harness WH is inserted, a door-side inner 20 that attaches the grommet body 10 to the door-side panel D, and a body-side inner 30 that attaches the grommet body 10 to the body-side panel B. A wire harness (WH) is constructed by bundling together multiple insulated wires, each in which a conductor is surrounded by an insulating coating.

[0028] The grommet body 10 is a flexible resin exterior member, and as shown in Figures 1 to 3, it has a substantially cylindrical tubular portion 11, a door-side mounting portion 12 provided on one end of the tubular portion 11, and a body-side mounting portion 13 provided on the other end of the tubular portion 11.

[0029] The cylindrical portion 11 is a cylindrical body through which a wire harness WH can be routed from one end to the other, and has a flexible bellows structure in its central portion. Therefore, the grommet 1 can bend in a desired direction to follow the opening and closing operation of the door-side panel D relative to the body-side panel B.

[0030] The door-side mounting portion 12, which is connected to one end of the cylindrical portion 11, is configured to allow the door-side inner 20 to be attached. The cylindrical portion 11 connected to the door-side mounting portion 12, when in a straight shape, is inclined to the right (LA) as it faces downward (HD). That is, one end of the cylindrical portion 11 is inclined relative to 12.

[0031] As shown in Figures 3 and 4, the door-side mounting portion 12 includes a cylindrical inner holding portion 121 that holds the door-side inner 20, and a mounting portion body 122 that connects the other end of the inner holding portion 121 to one end of the cylindrical portion 11.

[0032] As shown in Figures 3(a) and 3(b), the inner retaining portion 121 is a cylindrical body that is approximately oval in shape when viewed from above (HU). More specifically, the inner retaining portion 121 is composed of an annular bottom surface with an oval shape having a major axis along the first direction L and a minor axis along the second direction W, and a long cylindrical shape having a predetermined height in the height direction H. On one end face of the inner retaining portion 121, as shown in Figures 3(b) and 4(a), a lip 123 and a contact portion 124 are erected toward the one end. Furthermore, on the inner circumferential surface of the cylindrical inner retaining portion 121, a groove 125 is provided, with a portion recessed toward the radially outward direction, as shown in Figure 4(b).

[0033] As shown in Figures 4(a) and 4(b), the lip 123 is an umbrella-shaped water-stopping piece that extends from the radially central portion of the inner holding portion 121 toward the upward HU, and is inclined radially outward as it approaches the upward HU. The lip 123 configured in this way can be deformed toward the downward HD when an external force is applied to its tip.

[0034] As shown in Figures 3(b) and 4(b), the contact portion 124 is an oval projection in plan view, located radially inward of the lip 123, and protrudes upward HU from one end face of the inner holding portion 121. The length of the contact portion 124 protruding in the height direction H is shorter than the length of the lip 123 protruding upward HU.

[0035] As shown in Figure 4(b), the groove 125 is a groove formed by recessing the inner circumferential surface of the inner holding portion 121 radially outward, and is configured to allow the flange portion 22, which will be described later, to be fitted into it. By fitting the flange portion 22 into the groove 125 in this way, the door-side inner 20 can be held in the door-side mounting portion 12.

[0036] The mounting body 122 is a roughly flat plate with an oblong shape in plan view, connecting the other end of the annular cylindrical inner holding part 121 to one end of the cylindrical part 11. As shown in Figures 3(a) and 3(b), a communication hole 126 communicating with the cylindrical part 11 is provided at the connection point with the cylindrical part 11. Furthermore, a wall portion 127 is provided between the communication hole 126 and the inner holding part 121 of the mounting body 122, extending upward toward the HU (see Figures 3(b) and 4).

[0037] The communication hole 126 is a through-hole that penetrates the mounting body 122 in the height direction H at the connection point between the cylindrical portion 11, which has one end inclined relative to the mounting body 122, and the substantially flat mounting body 122. In other words, the cylindrical portion 11 and the door-side mounting portion 12 are in communication through the communication hole 126.

[0038] The communication hole 126 is formed in a roughly oval shape when viewed from above. More specifically, the communication hole 126 is egg-shaped, with the left side LB tapering more than the right side LA. The communication hole 126 is located to the right of the center of the mounting part body 122, on the LA side.

[0039] The wall portion 127 is an oval-shaped wall in plan view that extends upward from the mounting body 122 toward the upper HU, and is integrally constructed with the mounting body 122. More specifically, the wall portion 127 has an oval shape that is slightly larger than the communication hole 126, and has a major axis that is in the same straight line as the major axis of the communication hole 126 when viewed from the upper HU (see Figure 3(b)).

[0040] More specifically, the inner circumferential surface of the right-side LA in the wall portion 127 is configured to be flush with the outer edge of the right-side LA in the communication hole 126 (see Figures 3(b), 4(a), and 4(b)). On the other hand, the inner circumferential surfaces of the wall portion 127 other than the inner circumferential surface of the right-side LA are positioned radially outward from the outer edge of the communication hole 126. Furthermore, the arc portion of the wall portion 127 is configured to have a greater curvature than the arc portion of the inner holding portion 121. That is, the distance between the apex of the right-side LA in the wall portion 127 and the apex of the right-side LA on the inner circumferential surface of the inner holding portion 121 is shortest, and the distance widens towards the left-side LB.

[0041] Here, the length along the first direction L between the apex portion of the right side LA on the wall portion 127 and the apex portion of the right side LA on the inner circumferential surface of the inner holding portion 121 is defined as the first length L1 (see Figure 4(b)).

[0042] Furthermore, the height of the wall portion 127 (length along the height direction H) is sufficiently longer than the length from the mounting portion body 122 to the tip of the contact portion 124, and the length from the mounting portion body 122 to the tip of the lip 123 along the height direction H. More specifically, the height of the wall portion 127 is set to be approximately 2.5 times the length from the mounting portion body 122 to one end of the inner holding portion 121, and is set to be longer than the sum of the length from the mounting portion body 122 to the tip of the lip 123 along the height direction H and the thickness of the door-side panel D.

[0043] Furthermore, the length is set to align with the inclination direction of the cylindrical portion 11 relative to the door-side mounting portion 12, and to not interfere with a virtual straight line X passing through the center of the cylindrical portion 11 (see Figure 4(b)). This prevents the wall portion 127 from interfering with the wire harness WH that passes through the cylindrical portion 11, thereby preventing an excessive change in the routing direction of the wire harness WH at the upper side HU of the door-side mounting portion 12.

[0044] The body-side mounting portion 13 is configured to allow the body-side inner 30, which is connected to the other end of the cylindrical portion 11, to be attached. The body-side mounting portion 13 configured in this way has substantially the same configuration as the door-side mounting portion 12, except that it has a harness fixing portion 131 that extends downward to the HD instead of a wall portion 127, so its explanation is omitted here (see Figures 3(a) and 4(a)).

[0045] The door-side inner 20 is attached to the door-side mounting portion 12 and is a component that works in cooperation with the door-side mounting portion 12 to hold the grommet 1 to the door-side panel D. More specifically, as shown in Figure 5(a), the door-side inner 20 consists of a cylindrical portion 21 which is configured in a roughly oval shape in plan view, and a flange portion 22 which extends outward from the lower end of the cylindrical portion 21.

[0046] As shown in Figure 5(a), the cylindrical portion 21 has an outer circumferential surface that is the same shape as the inner circumferential surface of the inner holding portion 121, and is an oblong tubular body in plan view with a predetermined thickness in the radial direction, and has approximately the same height as the wall portion 127. The radial thickness of the cylindrical portion 21 is the same length as the first length L1.

[0047] As shown in Figures 5(a) and 5(c), the cylindrical portion 21 configured in this way has four locking pieces 23 that protrude radially outward in a recessed area on a part of the outer surface of the cylindrical portion 21, spaced at predetermined intervals in the circumferential direction.

[0048] The locking piece 23 has a roughly claw-shaped cross-section, extending outward from the upper end of the groove bottom in a recessed area of ​​the outer circumferential surface of the cylindrical portion 21 by approximately the depth of the groove, and extending downward from its tip toward HD. Furthermore, the central portion of the locking piece 23 protrudes in a way that it gradually bulges outward as it approaches the downward HD. That is, the central portion of the locking piece 23 has an inclined surface that slopes outward as it approaches the downward HD. The locking piece 23, configured in this way, is designed to elastically deform inward when an inward force is applied to the inclined surface.

[0049] The flange portion 22 protrudes outward from the lower end of the cylindrical portion 21 so that the door-side inner 20 can be attached to the door-side mounting portion 12 by fitting it into the groove portion 125. In other words, the flange portion 22 has a roughly oval shape in plan view, extending from the outer circumferential surface of the cylindrical portion 21 by the depth of the groove portion 125. The thickness of the flange portion 22 is approximately the same as the width H in the height direction of the groove portion 125.

[0050] The door-side inner 20 configured in this way is made up of a pair of divided bodies 40 that can be separated in the first direction L, as shown in Figures 5(b) and 5(c). The divided body 40 is configured in a substantially semi-elliptical shape when viewed from above, with a locking projection 41 protruding in the first direction L at one end of the semi-circular portion, and a frame portion 42 for locking the locking projection 41 at the other end.

[0051] The body-side inner 30 is attached to the body-side mounting portion 13 and, in cooperation with the body-side mounting portion 13, is a component that holds the grommet 1 to the body-side panel B. Since the body-side inner 30 has substantially the same configuration as the door-side inner 20, its explanation is omitted here.

[0052] The grommet 1, configured in this way, can protect the wire harness WH that runs between the door panel D and the body panel B by attaching the door-side mounting portion 12 to the door-side panel D and the body-side mounting portion 13 to the body-side panel B.

[0053] More specifically, at one end of the wire harness WH through which the grommet body 10 is inserted, the pair of divided parts 40 are moved along the first direction L, the locking projection 41 and the frame part 42 are locked and fixed, and the door-side inner part 20 is assembled to the wire harness WH.

[0054] Next, the door-side inner 20, which has been assembled to the wire harness WH through which the grommet body 10 has been inserted, is fitted into the door-side mounting portion 12. At this time, the flange portion 22 is fitted into the groove portion 125 starting from the point where the gap between the wall portion 127 and the inner holding portion 121 is narrowest. This allows the cylindrical portion 21 to be sandwiched and fixed between the inner holding portion 121 and the wall portion 127. In this state, the door-side inner 20 can be attached to the door-side mounting portion 12 by sequentially fitting the groove portions 125 along the circumferential direction of the flange portion 22. Similarly, the body-side inner 30, which is assembled to the other end of the body-side mounting portion 13 of the wire harness WH through which the grommet body 10 is inserted, is fitted into the body-side mounting portion 13 and attached.

[0055] Then, the cylindrical portion 21 of the door-side inner 20, which is attached to the door-side mounting portion 12, is moved to the upper HU and inserted through the door-side through hole D1 provided in the door-side panel D. As a result, the outer edge of the edge of the door-side through hole D1 comes into contact with the inclined surface of the locking piece 23, causing the locking piece 23 to deform inward, thereby allowing the cylindrical portion 21 to be inserted through the edge of the door-side through hole D1. When the inclined surface of the locking piece 23 passes over the edge of the door-side through hole D1, the locking piece 23 returns to its original position, and the door-side panel D can be clamped between the locking piece 23 and the contact portion 124.

[0056] In this way, the grommet 1 can be held against the door panel D by attaching the door-side inner 20, which is mounted on the door-side mounting portion 12, to the door-side panel D (see Figure 6). Furthermore, when the grommet 1 is held against the door-side panel D, the contact portion 124 is pressed against the door-side panel D, which prevents water from entering the inside of the grommet 1 from the outside of the door-side panel D.

[0057] Similarly, by attaching the body-side mounting portion 13, to which the body-side inner 30 is attached, to a through-hole provided in the body-side panel B, the grommet 1 can be held in place by the body-side panel B. This allows the wire harness WH, which spans between the door-side panel D and the body-side panel B, to be passed through the grommet 1 attached to the body-side panel B and the door-side panel D, thereby protecting the wire harness WH (see Figure 6).

[0058] As described above, the door-side mounting portion 12 attached to the door-side panel D is mounted on the outer surface of the door-side panel D, and a part of the wall portion 127 that rises from the mounting portion body 122 is inserted through the door-side through hole D1 provided in the door-side panel D and positioned on the inner surface of the door-side panel D. Therefore, as shown in Figure 7, even if liquid R that has entered the inner surface of the door-side panel D were to enter the inside of the door-side mounting portion 12 from between the door-side inner 20 and the door-side mounting portion 12, it would be blocked by the wall portion 127. Thus, it is possible to prevent liquid R from entering the body-side panel B via the cylindrical portion 11.

[0059] Thus, the grommet 1 includes a cylindrical grommet body 10 through which a wire harness WH is routed, and a door-side inner 20 attached to one end of the grommet body 10 to hold the grommet body 10 to a door-side panel D provided on a movable door. The grommet body 10 includes a cylindrical portion 11 through which the wire harness WH is routed from one end to the other, a door-side mounting portion 12 connected to one end of the cylindrical portion 11 and attached to the outer surface of the door-side panel D, and a body-side mounting portion 13 connected to the other end of the cylindrical portion 11 and attached to the body-side panel B. The door-side mounting portion 12 also includes a cylindrical inner holding portion 121 for holding the door-side inner 20, and a mounting portion body 122 connecting the other end of the inner holding portion 121 to one end of the cylindrical portion 11. Furthermore, the mounting body 122 is provided with a communication hole 126 that communicates with the cylindrical portion 11, and an annular wall portion 127 is provided between the communication hole 126 and the inner holding portion 121, extending toward the opposite side of the cylindrical portion 11.

[0060] The grommet 1 configured in this way can prevent liquid R that has entered the inside of the door-side panel D from traveling along the grommet body 10 and entering the inside of the body-side panel B. More specifically, a door-side mounting portion 12, which is attached to the outer surface of the door-side panel D, is connected to one end of a cylindrical portion 11, the other end of which is connected to a body-side mounting portion 13 attached to the body-side panel B. The mounting portion body 122 of the door-side mounting portion 12 is provided with an annular wall portion 127 that is erected toward the opposite side (upward side HU) of the cylindrical portion 11, between a communication hole 126 through which a wire harness WH is inserted and an inner holding portion 121. Therefore, even if liquid R that has entered the inside of the door-side panel D enters through a gap between the door-side inner 20 held by the inner holding portion 121 and the door-side mounting portion 12, the wall portion 127 can block the liquid R from flowing down the mounting portion body 122 into the insertion hole. Thus, it is possible to prevent liquid R that has entered the inside of the door-side panel D from flowing down the cylindrical portion 11 of the grommet body 10 and entering the body-side panel B.

[0061] Furthermore, when the door-side mounting portion 12 is attached to the door-side panel D, the wall portion 127 protrudes toward one end of the door-side panel D. This allows the wall portion 127 to more reliably block the liquid R that has entered the inside of the door-side panel D, even if it enters the through-hole side of the door-side inner 20. Therefore, it is possible to more reliably prevent the liquid R from entering the inside of the body-side panel B.

[0062] Furthermore, the inner retaining portion 121 has a lip 123 that abuts against the outer surface of the door-side panel D, and is erected facing the opposite side of the cylindrical portion 11, with the wall portion 127 set higher than the height of the lip 123. More specifically, the wall portion 127 is set higher than the sum of the height of the lip 123 and the thickness of the door-side panel D. This ensures that the height of the wall portion 127 protrudes more than one end of the door-side panel D, so that even if the liquid R that has entered the inside of the door-side panel D enters the door-side through-hole D1 side rather than the door-side inner 20, the wall portion 127 can more reliably block the liquid R.

[0063] Furthermore, the door-side inner 20 is provided with a cylindrical portion 21 that is inserted into a door-side through-hole D1 through which a wire harness WH is inserted, and the wall portion 127 is set to the same height as the cylindrical portion 21 when the door-side inner 20 is held by the grommet body 10.

[0064] As a result, when the door-side mounting portion 12 is attached to the door-side panel D, the wall portion 127 protrudes sufficiently beyond the door-side panel D. Therefore, it is possible to more reliably prevent liquid R that has entered the inside of the door-side panel D from traveling along the cylindrical portion 11 of the grommet body 10 and entering the inside of the body-side panel B.

[0065] Furthermore, one end of the cylindrical portion 11 is connected to the mounting portion body 122 at an inclination, and the wall portion 127 is set to a height that does not interfere with a virtual straight line X that runs along one end of the cylindrical portion 11 and through the center of the communication hole 126. As a result, interference between the wire harness WH, which is routed along the cylindrical portion 11 and extends toward the opposite side of the cylindrical portion 11, and the wall portion 127 can be suppressed. Consequently, excessive restriction of the routing path of the wire harness WH on the opposite side of the cylindrical portion 11 can be suppressed, and liquid R that has entered the inside of the door-side panel D can be more reliably prevented from traveling along the cylindrical portion 11 and entering the inside of the body-side panel B.

[0066] Furthermore, the communication hole 126 is formed in an oval shape when viewed from the mounting direction (upper side HU) when the door-side mounting part 12 is attached to the door-side panel D, by connecting one end of the cylindrical part 11 at an angle to the mounting part body 122. The wall part 127 is also formed in an oval shape with a major axis parallel to the major axis of the communication hole 126 when viewed from the mounting direction.

[0067] This prevents the wire harness WH, which passes through the cylindrical portion 11 and extends from the communication hole 126 from one end to the other end, from interfering with the wall portion 127, and also prevents the wall portion 127 from hindering the process of holding the door-side inner 20 with the inner holding portion 121.

[0068] Furthermore, one side of the long axis of the wall portion 127, which is oval-shaped and configured to correspond to the direction in which the cylindrical portion 11 is inclined relative to the mounting portion body 122, extends from the outer edge of the communication hole 126. With the grommet 1 configured in this way, the wall portion 127 is positioned closer to the communication hole 126 on one side of the long axis that does not interfere with the wire harness WH through which the cylindrical portion 11 is inserted, so that a gap is secured between the inner retaining portion 121 and the wall portion 127 at least on one side of the long axis. Therefore, the grommet 1 configured in this way can improve the workability of attaching the door-side inner 20 to the inner retaining portion 121.

[0069] Furthermore, the other side of the long axis of the oval-shaped wall portion 127 is positioned at a predetermined distance from the outer edge of the communication hole 126. This ensures that a gap is maintained between the inner holding portion 121 and the wall portion 127 on one side of the long axis, and a gap is maintained between the outer edge of the communication hole 126 and the wall portion 127 on the other side of the long axis.

[0070] Therefore, on one side of the long axis, space can be secured to attach the door-side inner 20 to the inner holding portion 121, and interference between the wire harness WH extending from the communication hole 126 from the other end to the one end and the wall portion 127 can be further suppressed. Thus, the workability of attaching the door-side inner 20 to the inner holding portion 121 can be improved, and interference between the wire harness WH and the wall portion 127 on the inside of the door-side panel D can be further suppressed.

[0071] Furthermore, since the mounting body 122 is configured in an oval shape with a major axis parallel to the major axis of the wall portion 127, the mounting body 122 and the wall portion 127 are configured in an oval shape with their major axes parallel to each other. Therefore, the gap between the wall portion 127 and the inner retaining portion 121 can be secured around the entire circumference of the mounting body 122. Consequently, when attaching the door-side inner 20 to the inner retaining portion 121, the wall portion 127 can suppress interference with the attachment of the door-side inner 20, making it easy to hold the door-side inner 20 in place on the inner retaining portion 121.

[0072] Furthermore, the door-side inner panel 20 is composed of multiple divided parts 40 that can be divided in a direction intersecting the insertion direction of the wire harness WH. This allows the door-side inner panel 20 to be easily assembled to the wire harness WH, and in the door-side inner panel 20 composed of divided parts 40, it is possible to reliably prevent liquid R that enters through the gaps formed between the divided parts 40 from flowing into the insertion hole. Therefore, it is possible to improve the assembly workability when assembling the door-side inner panel 20 composed of divided parts 40 to the wire harness WH, while preventing liquid R that enters through the gaps between the divided parts 40 from entering the inside of the body-side panel B.

[0073] In the correspondence between the structure of this invention and the embodiments described above, the wire harness of this invention corresponds to the wire harness WH of the embodiment, and similarly, hereinafter, The grommet body corresponds to grommet body 10, The door-side panel corresponds to door-side panel D. The grommet inner corresponds to the door-side inner 20. The cylindrical part corresponds to the cylindrical part 11, The door-side mounting section corresponds to the door-side mounting section 12. The body-side panel corresponds to body-side panel B. The body-side mounting portion corresponds to the body-side mounting portion 13. The inner retaining part corresponds to the inner retaining part 121. The communication hole corresponds to the communication hole 126. The mounting part body corresponds to the mounting part body 122, The wall section corresponds to wall section 127, The grommet corresponds to grommet 1, The lip is compatible with lip 123. The insertion hole corresponds to the door-side through hole D1. The cylindrical part corresponds to the cylindrical part 21, The virtual line corresponds to the virtual line X, The divided body corresponds to the divided body 40, but this invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

[0074] For example, the wall portion 127 only needs to be positioned between the communication hole 126 and the inner holding portion 121, and may be circular or rectangular in plan view. Also, in this embodiment, the right-side LA end of the wall portion 127 is flush with the right-side LA portion of the outer edge of the communication hole 126, but it is not limited to this shape. For example, the wall portion 127 may be flush with the entire circumference of the outer edge of the communication hole 126, or it may be separated from the outer edge of the communication hole 126 by a predetermined distance around its entire circumference.

[0075] Furthermore, in this embodiment, the height of the wall portion 127 is set to be the same as the height of the cylindrical portion 21, but it is not limited to this, and the height of the wall portion 127 may be set lower or higher than the cylindrical portion 21. For example, the height of the wall portion 127 is more preferably 0.9 to 1.1 times the height of the cylindrical portion 21. If the height of the wall portion 127 is 0.9 times or more the height of the cylindrical portion 21, it is possible to more reliably suppress the liquid R from passing over the wall portion 127 and entering the inner diameter. Also, if the height of the wall portion 127 is 1.1 times or less the height of the cylindrical portion 21, it is possible to suppress interference between the wire harness WH extending upward from the communication hole 126 to the upper side HU and the wall portion 127.

[0076] Furthermore, by making the height of the wall portion 127 greater than that of the cylindrical portion 21, it is possible to suppress the intrusion of liquid R beyond the wall portion 127 into the inner diameter from the right side LA, which is in close contact with the cylindrical portion 21.

[0077] Furthermore, while it is preferable that the upper end of the wall portion 127, when attached to the door-side panel D, is one end closer to the door-side panel D and the other end closer to the extension of the virtual straight line X, it is not necessarily required to be within this range.

[0078] The door-side inner 20 is constructed by assembling two identically shaped segmented parts 40 together, but this configuration is not necessarily required. For example, the door-side inner 20 may be a non-divisible unit, or a door-side inner 20 with a hinge structure or the like that allows it to open and close freely. [Explanation of Symbols]

[0079] 1… Grommet 10…Grommet body 11…Cylindrical part 12... Door-side mounting part 13…Body-side mounting part 20... Door side inner 21...Cylindrical section 40…divided body 121... Inner holding part 122...Mounting part body 123...Lip 126…Communication hole 127...Wall part B...Body side panel D... Door side panel X...Virtual line D1...Through hole on the door side WH... Wire harness

Claims

1. A cylindrical grommet body through which a wire harness is routed, A grommet inner is attached to one end of the grommet body and is provided to hold the grommet body to a door-side panel provided on a movable door. The grommet body, A cylindrical portion through which the wire harness is routed from one end to the other, A door-side mounting portion is attached to the outer surface of the door-side panel and is connected to one end of the cylindrical portion. The other end of the cylindrical portion is connected to a body-side mounting portion which is attached to the body-side panel, The aforementioned door-side mounting portion includes: A cylindrical inner retaining portion that holds the grommet inner, An attachment body is provided that connects the other end of the inner holding portion and one end of the cylindrical portion. The mounting part body is provided with a communication hole that communicates with the cylindrical part, An annular wall portion is provided between the communication hole and the inner holding portion, with the wall portion erected facing the opposite side of the cylindrical portion. Grommet.

2. The wall portion, when the door-side mounting portion is attached to the door-side panel, protrudes toward one end from the door-side panel. The grommet according to claim 1.

3. The inner retaining portion has a lip that abuts against the outer surface of the door-side panel, and is erected facing the opposite side of the cylindrical portion. The aforementioned wall portion is set to be higher than the height of the lip. The grommet according to claim 2.

4. The aforementioned wall portion is set to be higher than the sum of the height of the lip and the thickness of the door-side panel. The grommet according to claim 3.

5. The grommet inner comprises a cylindrical portion that is inserted into an insertion hole provided in the door-side panel through which the wire harness is inserted. The wall portion is set to the same height as the cylindrical portion when the grommet inner is held in place by the grommet body. A grommet according to any one of claims 2 to 4.

6. One end of the cylindrical portion is connected to the mounting portion body at an inclination, The wall portion is positioned along one end of the cylindrical portion and is set to a height that does not interfere with a virtual straight line passing through the center of the communication hole. The grommet according to claim 2.

7. The aforementioned communication hole is formed in an oval shape when viewed from the mounting direction in which the door-side mounting portion is attached to the door-side panel, by connecting one end of the cylindrical portion at an inclination to the mounting portion body. The wall portion is configured in an oval shape, having a major axis parallel to the major axis of the communication hole when viewed from the mounting direction. The grommet according to claim 1.

8. One side of the long axis of the wall portion, which is oval-shaped in a direction corresponding to the direction in which the cylindrical portion is inclined with respect to the mounting portion body, extends from the outer edge of the communication hole. The grommet according to claim 7.

9. The other side of the long axis of the oval-shaped wall portion is positioned at a predetermined distance from the outer edge of the communication hole. The grommet according to claim 8.

10. The mounting body is configured to be oval-shaped with a major axis parallel to the major axis of the wall. The grommet according to claim 9.

11. The grommet inner is composed of a plurality of segments that can be divided in a direction intersecting the insertion direction of the wire harness. The grommet according to claim 1.

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