JPH0765661A - Grommet divided in two - Google Patents

Abstract

PURPOSE:To surely push a grommet into the through hole of a panel so as to improve fixing workability by blocking reaction force and pushing-in force by a rib, a rib hole, a locking claw and a locking hole. CONSTITUTION:An inner step part 11f in which a flange part 11d is projected in circumferential direction and a main body part is depressed is formed in respective one divided faces 11e of a pair of semi-circular frame bodies 11A, 11B, which are respectively a piece of a frame body divided to two. An outer step part 11h in which a flange part 11d is depressed in the circumferential direction and the main body part 11c is projected is formed respective the other divided faces 11g. The inner step part 11f in one face of one divided piece is fitted with the outer step part 11h in the other face of the other divided piece mutually between the two pieces to unit them. Further, a rib 11j wide in radial direction and projected in axial direction and a holding hole wide in the circumferential direction are formed in the inner step 11f of each frame piece and a rib hole 11p to insert the rib into and a holding claw 11q which is wide in the circumferential direction and is projected in the axial direction to be fitted in the holding hole are formed in the outer step 11h of each of the other pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-part grommet which is attached to a through hole of a vehicle body panel with a wire harness inserted.

[0002]

2. Description of the Related Art Conventionally, when a wire harness is routed through a through hole provided in an automobile panel, one means for fixing the grommet to the vehicle body is to use a separate member, resin, at the center of the grommet of the resin. The wire harness is inserted through the provided insertion hole, and the grommet is fixed and attached to the vehicle body panel. As the above-mentioned grommet, there is provided a two-part grommet that can be fixed to the wire harness so as to be sandwiched from the outer peripheral (diameter) direction.

The two-divided grommet A has an advantage that the grommet can be easily attached to the wire harness. Conventionally, as shown in FIGS.
The annular body having the wire harness insertion hole 1a in the central portion is divided into two frame bodies A1 and A2 in the diametrical direction, and each of the semicircular body portions 1c and 1c of each frame body A1 and A2 has a structure. Fixing claws 1b, 1b for the panel 2 are provided on the outer peripheral surface, and a flange portion 1d is projectingly provided on one end of the outer peripheral surface.

On one split surface 1e where the two divided frame bodies A1 and A2 face each other, locking pieces 1f and 1g projecting in the circumferential direction from the upper wall of the flange portion 1d and the bottom wall of the main body portion 1c.
Are provided to form locking holes 1h and 1i in the axial direction in the locking pieces 1f and 1g, respectively, and the upper wall of the flange portion 1d of the other split surface 1j and the bottom wall of the main body portion 1c are
Forming locking claws 1k and 1m protruding in the axial direction,
The locking holes 1h and 1i of one frame body A1 are engaged with the locking claws 1k and 1m of the other frame body A2, and the locking holes 1h of the other frame body A2 are engaged.
The locking claws 1k and 1m of one of the frame bodies A1 are engaged with h and 1i so that the divided frame bodies A1 and A2 are integrally coupled.

Further, a rib 1 having a wide width in the diametrical direction and projecting in the circumferential direction is formed on the dividing surface 1j on the other side of each of the frames A1 and A2.
A rib hole 1q into which the rib 1p is fitted from the circumferential direction is formed in the divided surface 1e on one side.

In the above-mentioned two-divided grommet, as shown in FIG. 6 (A), when the body portion 1c is pushed into the through hole 2a of the panel 2 from the side where the flange 1d is not provided and fixed, the fixing claw 1b, When 1b hits the inlet end of the through hole 2a and the pressing force P is applied to the grommet as it is, the fixing claws 1b and 1b bend and the main body 1c is fitted into the through hole 2a. However, at the time of the above action, as shown in FIG. 6 (B), before the fixed claws 1b, 1b are bent, they are lost by the pushing force P and the locking claws 1m and the locking holes 1 on the bottom wall of the main body 1c are lost.
i is disengaged, and the main body portions 1c, 1 of both frame bodies A1, A2
There is a drawback that c is opened outward and cannot be pushed into the through hole 2a of the panel 2.

Therefore, as shown in FIGS. 7 and 8, on the flange portion 1d of the divided surface 1e on one side of each of the frame bodies A1 and A2,
A rib 1r that is wide in the diameter direction and protrudes in the circumferential direction is provided,
The main body portion 1c is provided with ribs 1s that are wide in the axial direction and project in the circumferential direction, and the flange portion 1 of the split surface 1j on the other side is provided.
In d, a rib hole 1t into which the rib 1r is fitted is formed,
A rib hole 1u into which the rib 1s is fitted is formed in the main body portion 1c, while a locking claw 1v is formed on the outer surface of the rib 1s, and the locking claw 1v is engaged in the rib hole 1u. It is provided with a locking hole 1w. (Actual development 6
(See Japanese Patent Publication No. 4-27918)

[0008]

However, even in the grommet having the above structure, the locking claw 1v and the locking hole 1 are formed.
Since a gap t for engagement with w is required, this engagement gap t allows the main body portions 1c, 1 of both frame bodies A1, A2 to be
There is a problem that it is difficult to push c into the through hole 2a of the panel 2 because it opens outward.

The present invention has been made to solve the above problems, and provides a two-part grommet which can be surely pushed into a through hole of a panel by preventing the main body portions of both frames from being opened. The purpose is.

[0010]

In order to achieve the above-mentioned object, the present invention comprises a pair of semi-annular frame members, which are attached from both outer peripheral surfaces of a wire harness and which are inserted while the wire harness is inserted therethrough. And a pair of frame bodies, each of which has a flange portion at one end of a semi-circular main body portion, and a flange portion on one side of a division surface of the pair of frame bodies arranged opposite to each other. Forms an inner step portion projecting in the circumferential direction and the main body part is recessed, and an outer step portion in which the flange part is recessed in the circumferential direction and the main body part is protruded is formed on the split surface on the other side, While the inner step portion on one side of one frame body and the outer step portion on the other side of the other frame body are fitted and integrated, respectively, the diameter from the surface of the flange portion of the inner step portion on the side of the main body A rib that is wide in the direction and that protrudes in the axial direction is provided, and a locking hole that is wide in the circumferential direction is formed. On the other hand, the main body of the outer step portion on the other side is formed with a rib hole into which the rib is fitted from the surface of the flange portion side and a locking claw that engages with the locking hole. The present invention provides a two-part split grommet.

[0011]

According to the present invention, when the grommet is pushed into the through hole of the panel from the body portion and a pushing force is applied to the grommet, the rib fitted in the rib hole tries to open the body portion outward. Since the width is wide in the direction of the acting force, the acting force is dispersed and blocked in the wide portion. At the same time, the locking claws and the locking surfaces of the locking holes are in wide contact in the circumferential direction to block the pushing force. That is, since the acting force and the pushing force are blocked by the rib and the rib hole and the locking claw and the locking hole, respectively, the main body of the grommet cannot be opened outward.

[0012]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. As shown in FIGS. 1 and 2, the two-divided grommet 11 is composed of a pair of semi-annular frame bodies 11A and 11B, and these are combined into one annular frame body. A wire harness insertion hole 11a is provided on the inner peripheral side of the main body 11c, and the panel 12 is provided on the outer peripheral surface.
It has a fixing claw 11b (see FIG. 3) and a flange 11d at one end of the main body 11c.

On the dividing surface 11e on one side of each of the frame bodies 11A and 11B, which has a shape obtained by dividing the annular frame body into two in the diameter direction D,
The flange portion 11d has a predetermined dimension l and projects in the circumferential direction R, and the body portion 11c forms an inner step portion 11f in which the body portion 11c is recessed in the circumferential direction R. In addition, the flange portion 11d is recessed in the circumferential direction R with a predetermined dimension 1 in the other side division surface 11g, and the main body portion 11 is formed.
c forms an outer step portion 11h protruding in the circumferential direction R. The inner step portion 11f and the outer step portion 11h are integrated by fitting the inner step portion 11f on one side of the one frame body 11A and the outer step portion 11h on the other side of the other frame body 11B. I am trying.

On the other hand, on the surface 11i on the main body portion 11c side of the flange portion 11d of the divided surface 11e on one side of each of the frame bodies 11A and 11B, a rib 11j protruding in the axial direction S with a wide width W1 in the diameter direction D is formed. Is forming. On the outer peripheral side of the surface 11i, a slanted guide 11k protruding in the axial direction S with a wide width W2 in the circumferential direction R, and a wide width W3 in the circumferential direction R on a flange portion 11d at the base of the guide 11k. A blind hole 11m is formed (W2> W3).

Further, a rib hole 11p into which the rib 11j is fitted in the axial direction S is formed in a surface 11n on the flange portion 11d side of the main body portion 11c of the other divided surface 11g on the other side of each of the frames 11A and 11B. ing. On the outer peripheral side of the surface 11n, there is formed a locking claw 11q protruding in the axial direction S with a wide width W3 in the circumferential direction R and being engaged with the locking hole 11m while being guided by the guide 11k.

In the two-part grommet 11 having the above structure, as shown in FIGS. 2A and 2B, the wire harness insertion holes 11a of the respective frame bodies 11A and 11B are fitted to the wire harness from the outer peripheral (diameter) direction to form ribs. 11j is a rib hole 11p
And engage the locking claws 11q with the guides 11
While guiding with k, engage with each locking hole 11m,
Both frame bodies 11A and 11B are integrated.

Thereafter, as shown in FIGS. 3 and 4, the grommet 11 is provided in the through hole 12a of the panel 12 to form the flange portion 1.
When the push-fitting is performed from the body portion 11c on the side where the 1d is not provided, the fixing claws 11b and 11b hit the inlet end of the through hole 12a. When the pushing force P is applied to the grommet 11 as it is, the fixing claws 11b and 11b are bent and the main body part 11c is fitted into the through hole 12a, the flange part 11d abuts the inlet end part, and the fixing claws 11b and 11b move to the outlet end. Part to re-engage and engage the outlet end, and grommet 1 on panel 12
1 is fixed.

When the pushing force P is applied to the grommet 11 at the time of mounting the grommet 11, the fixing claws 11b, 11 are formed.
Before the bending of b, the main body portion 11c of each frame 11A, 11B
The forces P1 and P2 that try to open outward with the dividing surfaces 11e and 11g as boundaries act on the.

At this time, as shown in FIG. 3, rib holes 11p are formed.
The action force P that the rib 11j that fits into the opening tries to open outward
Since the width W1 is wide in the directions 1 and P2 (diameter direction), the acting forces P1 and P2 are dispersed and blocked in the wide portion, so that the main body portion 11c does not open outward.

At the same time, as shown in FIG. 4, the locking claws 11q and the locking surfaces of the locking holes 11m come into contact with each other in the circumferential direction R with a wide width W3 to block the pushing force P, so that the main body 11c is removed. It will not open to others.

As described above, the rib 11j and the rib hole 11 are provided.
Since the action forces P1 and P2 that try to open outward and the pushing force P are blocked by the p, the locking claw 11q, and the locking hole 11m, respectively, the main body portion 11c of the grommet 11 cannot be opened outward. The grommet 11 can be reliably pushed into the through hole 12a of the panel 12.

[0022]

As is apparent from the above description, in the two-divided grommet of the present invention, when a pushing force is applied to the grommet, the rib fitted in the rib hole tries to open the main body outward. Since the locking claws and the locking surfaces of the locking holes are in wide contact with each other in the circumferential direction to block the pushing force at the same time, the ribs and the rib holes and the locking claws are dispersed. The locking hole blocks both the acting force and the pushing force, so the main body of the grommet will not open outward, and the grommet can be pushed securely into the through hole of the panel, improving the workability of fixing the grommet. Come to do.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a grommet of the present invention.

FIG. 2A is a cross-sectional view of a locking claw and a locking hole before engagement,
(B) It is a cross-sectional view after the engagement of the engagement claw and the engagement hole.

FIG. 3 is a sectional view of the grommet when the panel is pushed in.

FIG. 4 is a side view of the grommet when the panel is pushed in.

FIG. 5 is a perspective view of a grommet according to a first related art.

6A is a cross-sectional view of the grommet of FIG. 5 before being pushed in, and FIG. 6B is a cross-sectional view of the grommet being pushed in.

FIG. 7 is a perspective view of a second conventional grommet.

8 is a cross-sectional plan view of the main parts of the grommet of FIG.

[Explanation of symbols]

 11 Grommet 11a Insertion hole 11b Fixed claw 11c Body part 11d Flange part 11e Divided surface 11f Inner step part 11g Divided surface 11h Outer step part 11i surface 11j Rib 11m Locking hole 11n surface 11p Rib hole 11q Locking claw 12 Panel 12a Hole R Circumferential direction S Axial direction D Diameter direction

Claims (1)

[Claims] 1. A two-part grommet, which comprises a pair of semi-annular frame members, is attached from both outer peripheral surfaces of a wire harness, and is annularly coupled with the wire harness inserted, wherein the pair of frame members are Each of them has a flange portion at one end of a semi-circular main body portion, and an inner step portion in which the main body portion is recessed so that the flange portion projects in the circumferential direction, is provided on one side of the dividing surfaces of the pair of frame bodies arranged opposite to each other. At the same time, the outer surface of the divided surface on the other side is formed such that the flange portion is depressed in the circumferential direction and the main body portion is protruded, and the inner step portion on one side of the one frame body and the frame body on the other side are formed. While the outer step portion on the other side is fitted and integrated with each other, a rib that is wide in the diametrical direction and axially protrudes from the surface of the flange portion of the inner step portion on the main body side side is provided, and at the same time, in the circumferential direction. While forming a wide locking hole on the other side, the main body of the outer step on the other side 2 divided grommet, characterized in that to form the locking pawl to be engaged with the locking hole so as to form a rib holes to further the ribs fit.