JP2000050470A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need of an exclusive grommet and to sharply reduce the costs of a grommet, by a method wherein two kinds out of a divided body which comprises a tube part for washer hose connection passed through a diameter-expanded tube part, a divided body which comprises a tube part for insertion and passage, and a divided body which does not comprise both, are used so as to be coupled by sandwiching a wire harness. SOLUTION: A first divided body 11B which does not form a through hole in a half body 13B at a diameter-expanded tube part 13 is prepared. A second divided body 11A in which a tube part 30 for a washer hose is installed at a half body 13B is prepared. In addition, a third divided body in which a tube part for a hood opener is installed at a half body is prepared. For example, when the first divided body 11B and the second divided body 11A are combined so as to be used, a wire harness W/H which is composed of a wire group is covered with the first and second divided bodies 11B, 11A from both sides in a direction at right angles to its axis. A lock claw is inserted into a lock frame 17 so as to be locked and coupled in a state that the wire harness W/H is sandwiched. After that, a tape is wound from a small-diameter tube part up to the wire harness W/H, and a grommet is fixed to the wire harness W/H.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet used for inserting a wire harness into a through hole formed in a vehicle body panel or the like of an automobile, and particularly to a washer hose and / or a hood opener passed through the grommet. It is preferably used in such cases.

[0002]

2. Description of the Related Art In an automobile, a grommet is attached to a wire harness in order to route a wire harness from an engine room to a vehicle interior, and the grommet is mounted in a through hole of a vehicle body to provide waterproofing, dustproofing, sound insulation, etc. to the vehicle interior. Is being planned.

[0003] This type of grommet is usually integrally formed of an elastic material such as rubber or elastomer, as shown in FIG. The grommet 1 has a large-diameter cylindrical portion 1b provided in a truncated cone shape from a small-diameter cylindrical portion 1a through which the wire harness W / H is inserted in close contact, and a vehicle body locking groove 1c is provided on the outer peripheral surface of the large-diameter cylindrical portion 1b. Consists of a shape.

The grommet 1 has a wire harness W / H.
13 is attached to the engine room through the through hole 2a from the compartment partitioned by the vehicle body panel 2 as shown by a solid line in FIG. 13, or from the engine room to the compartment as shown by a dashed line. FIG. 14
As shown in FIG. 5, the vehicle body locking groove 1c is fitted inside the through hole 2a.

As shown by the solid line, when the grommet 1 is passed from the vehicle compartment to the engine room, the wire harness W / H protruding from the small-diameter cylindrical portion 1a side is pulled so that the vehicle body locking groove 1c is inserted into the through hole 2a. It is locked. In this case, simply pull the wire harness in the direction of the solid arrow and grommet 1
Can be locked to the vehicle body panel 2. However, since the wire harness that passes from the engine room to the vehicle compartment has a long portion to be routed to the engine room and has many branch lines and connectors, it is usually passed from the engine room to the vehicle compartment. You. In this case, first, FIG.
Grommet 1 through hole 2a
However, since the front end side of the vehicle body locking groove 1c is deformed into a small diameter and passed therethrough, it is difficult to securely lock the vehicle body locking groove 1c in the through hole 2a, and thus the entire grommet is passed through the through hole 2a. Then, it is pulled back in the opposite direction to lock the vehicle body locking groove 1c in the through hole 2a. That is, it is necessary to perform a push-pull operation in two directions to pull back after pushing.

As shown in FIG. 15A, the grommet 1 is passed through a washer hose 5.
As shown in FIG. 5 (B), the hood opener 6 may be passed. In this case, when the washer hose 5 is passed, as shown in FIG. 15 (A), a through hole is provided in the enlarged-diameter tube portion 1b of the grommet 1 and a tube portion 1f for connecting the hose is formed from the periphery of the through hole. Is protruding. Similarly, when the hood opener 6 is passed, as shown in FIG. 15 (B), a through-hole is provided in the enlarged-diameter cylindrical portion 1b of the grommet 1, and the hood opener is penetrated from the periphery of the through-hole. A cylindrical portion 1h protrudes. Since the diameter and shape of the tube portion 1f for connecting the hose and the tube portion 1h for penetrating the hood opener are different, they cannot be shared, and are provided separately.

[0007]

As described above, a grommet for penetrating a washer hose, a grommet for penetrating a hood opener, a grommet for penetrating both a washer hose and a hood opener, and both a washer hose and a hood opener are used. It is necessary to prepare four types of grommets that do not penetrate,
There was a problem that the number of parts increased and the cost increased.

[0008] Regarding the work of passing the grommet through the through-hole of the vehicle body panel, the grommet 1 is inserted into the through-hole 2a from either the direction of the dashed line or the direction of the solid line in FIG.
In this case, the grommet in a portion having a diameter larger than the diameter of the through hole 2a must be crushed, which places a burden on the operator. In addition, there is a problem that the grommet 1 pulled during the threading operation does not extend uniformly, and is difficult to attach to the through hole 2a, resulting in poor workability. Further, the wire harness W / H is attached to the grommet 1.
As shown in FIG. 16, the grommet 1 must be expanded by the grommet diameter expanding jig 4 and the wire harness must be passed through the wire harness, as shown in FIG.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to prevent the washer from penetrating by using a grommet that penetrates a washer hose, a hood opener, or a grommet that does not penetrate them. And A further object of the present invention is to make it possible to mount the grommet through the through hole of the vehicle body panel by only pushing in one direction from the engine room side to the vehicle room side.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a small-diameter cylindrical portion, an enlarged-diameter cylindrical portion expanding from one end of the small-diameter cylindrical portion, and a fitting inside a through hole of a vehicle body panel. A tubular body having a vehicle body locking portion is divided into two parts in the axial direction and is constituted by two divided bodies; and a lock means for connecting the divided bodies with the wire harness sandwiched between these divided bodies is provided. In the split grommet attached to the through hole of the vehicle body panel in a state of being attached to the first, a first divided body provided with a washer hose connecting cylinder penetrating the enlarged diameter cylinder section, and penetrating the enlarged diameter cylinder section A second divided body provided with a tubular portion for inserting a hood opener and a third divided body not provided with both a tubular portion for connecting the washer hose and a tubular portion for inserting a hood opener are prepared. Two types of divided bodies By combining the divided body, it provides a grommet that is configured to couple across the wire harness.

As described above, the grommet is moved in the axial direction by two.
It is divided into two divided bodies, and the first divided body is provided with a washer hose connecting cylinder.
A second divided body provided with a divided body, a hood opener insertion cylindrical part penetrating the enlarged diameter cylindrical part, and a third part provided with neither a washer hose connecting cylindrical part nor a hood opener inserted cylindrical part. If divided bodies are prepared, these three kinds of divided bodies are selected and combined to form a grommet for penetrating a washer hose, a grommet for penetrating a hood opener, a grommet that does not penetrate any of them, and a grommet that penetrates both. Various types of grommets can be provided, and it is not necessary to provide various types of grommets.

Further, when the grommet is constituted by a divided body, it is not necessary to pass the wire harness using a jig, and it is sufficient to assemble the wire harness by sandwiching it from both sides.
Installation work to the wire harness is also simplified.

Each of the divided bodies has a flange protruding from an outer peripheral surface of the enlarged-diameter cylinder portion at a predetermined distance from the front end opening of the enlarged-diameter cylinder portion, and has a circumferential direction from a peripheral edge of the front-end opening of the enlarged diameter cylinder portion. A locking claw protruding at an interval is provided, and a rubber sealing material is attached to the front side of the flange portion so as to face the locking claw, and the locking claw is passed through a through hole of the vehicle body. When locked on one surface of the vehicle body, the sealing material is pressed against the other surface of the vehicle body.

With the above structure, when the grommet attached to the wire harness is passed through the through hole of the vehicle body panel that separates the engine room from the vehicle room, the grommet is inserted from the engine room side, and the locking protrudes from the peripheral edge of the front end opening. The pawl is bent to pass through the through hole, and the pawl is locked to one surface of the vehicle body panel on the vehicle interior side. In this state, the front surface of the sealing material is pressed against the other surface of the vehicle body panel on the engine room side. As described above, the grommet can be attached to the vehicle body panel with one touch by the one-way insertion work from the engine room side to the vehicle room side.
In addition, since the sealing material is pressed against the periphery of the through hole on the engine room side, the noise on the engine room side entering the vehicle interior from the gap of the through hole can be reduced.

[0015]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 7 show a first embodiment, in which a grommet 10 is composed of divided bodies 11A and 11B, and these divided bodies 11A and 11B are assembled and joined from both sides of a wire harness W / H to form a wire harness. It is a cylindrical body through which it passes.

Each of the divided bodies 11A and 11B is a resin molded product, and is a half-split body obtained by dividing the cylindrical body along the axial direction. That is, the half bodies 12A, 12A constituting the small-diameter cylindrical portion 12
B, halves 13A and 13B constituting a diameter-enlarging tube portion 13 whose diameter is increased from one end of the small-diameter tube portion 12, and projecting from an outer peripheral surface of the diameter-enlarging tube portion at a predetermined distance from a front end opening of the diameter-enlarging tube portion 13. Half flanges 14A and 14B constituting the provided flange portion, and locking claws 15A and 15B protruding at intervals in the circumferential direction from the peripheral edge of the front end opening of the enlarged diameter cylindrical portion are provided.

The locking claws 15A and 15B are provided at intervals of 90 degrees, so that each divided body 11A and 11B has two
They are provided individually. Note that the number of locking claws is not limited. These locking claws 15A, 15B have a shape provided with claws 15A-2, 15B-2 which are inclined in the folding direction from the tips of the protruding pieces 15A-1, 15B-1 from the front end face of the enlarged-diameter cylindrical portion. It has flexibility.

A lock claw 1 is provided at the divided end of the divided body 11A.
6, and a lock frame 17 for fitting and locking the lock claw 16 is provided at the divided end of the divided body 11B to lock the small-diameter tube portion 12, the large-diameter tube portion 13, and the flange portion 14 with each other. The pawl 16 is inserted and locked in the lock frame 17 to be locked.

Further, the above-mentioned enlarged-diameter tube portion 13, flange portion 14
Of the divided body 11A as shown in FIG.
An L-shaped notch 18 is provided from the divided end surface to the inner peripheral surface, and a rubber packing 19 is attached to the bottom surface of the notch 18. On the other hand, the other divided body 11B is provided with a projection 20 that fits into the notch 18 from the divided end face, and the tip of the projection 20 presses against the rubber packing 19, and in this state, the lock claw 16 contacts the lock frame 17. It is inserted and locked.

The half-pieces 14A, 14 of the flange portion 14
A semi-annular rubber sealing material 21 is provided on each front surface of B.
A and 21B are fixed using an adhesive. The thickness of the sealing materials 21A, 21B is determined by the opposing locking claws 15A, 1A.
5B is set corresponding to the thickness of the vehicle body panel 2 to be sandwiched therebetween. Further, annular seal ribs 22A, 22B are protrudingly provided at the center portions in the width direction of the seal members 21A, 21B. As shown in FIG.
A, 15B is pressed into contact with the engine room side surface 2c of the vehicle body panel in a state where the front end surfaces of the A and 15B are locked to the vehicle room side surface 2b of the vehicle body panel 2.

As described above, one grommet 10 is constructed by combining the divided bodies 11A and 11B, and three kinds of divided bodies are provided as these divided bodies. That is, in FIG. 1, a first divided body, a divided body 1 in which a through-hole is not provided in a half body 13B of the enlarged diameter cylindrical portion 13 indicated by a divided body 11B
A second divided body in which a pipe 30 for a washer hose is provided in a half body 13A of the enlarged diameter cylindrical portion 13 indicated by 1A, and a tube 40 for a hood opener shown in FIG. It comprises a third divided body composed of a half body 11C provided on the half body 13.

The half body 11A provided with the washer hose tube portion 30 serving as the second divided body is provided with a through hole 31 in the half body 13A of the enlarged-diameter tube portion 13, and is provided with a through hole 31 at both ends. The cylindrical portion 30 is protruded, and the distal end of the internal protruding portion 30a extending into the enlarged diameter cylindrical portion is defined as an opening 30b, while the distal end of the externally protruding portion 30c protruding outward is defined as a closed portion 30d. The washer hose 35 is divided into two at the grommet penetration portion into 35A and 35B, and one washer hose 35A is connected to the tip opening 30b of the inner protruding portion 30a, while the other washer hose 35B is connected to the tip of the outer protruding portion 30c. The connection is made after cutting off the closing portion 30d.

When the divided body 11B composed of the first divided body and the divided body 11A composed of the second divided body are combined, a grommet for penetrating a washer hose shown in FIG. 1 is obtained.

As shown in FIG. 3, the divided bodies 11A and 11B cover the wire harness W / H composed of a group of electric wires from both sides in a direction perpendicular to the axis, and lock the lock claws 16 with the wire harness sandwiched therebetween. It is inserted into the frame 17 and locked. Thereafter, the wire harness W /
The tape 25 is wound around H and the grommet 10 is fixed to the wire harness.

In this state, the enlarged diameter cylindrical portion 1 of the grommet 10 is
Water-stopping agent 26 made of two-liquid mixture curability and the like from the front end opening of No. 3
And the water blocking agent 26 is penetrated into the gap between the inner peripheral surface of the grommet and the electric wires and the gap between the electric wires to enhance the sealing performance.

With the grommet 10 attached to the wire harness W / H in this manner, as shown in FIG. 4, an arrow is formed in the through hole 2a of the vehicle body panel 2 from the engine room (B) side to the vehicle room (A). The grommet 10 is pushed into the through hole 2a from the engine room side through the wire harness in the direction. As a result of this pushing, the locking claws 15A, 15B at the front ends are bent inward, pass through the through holes 2a, return to the original state at the position protruding to the vehicle interior, and the expanding claws 15A-2, 15B-2 are moved to the vehicle body panel. 2 is press-fitted to the vehicle interior surface 2b. At this time, the seal ribs 22A and 22B of the seal members 21A and 21B are pressed against the engine room side surface 2c. In this way, the grommet 10 can be attached to the vehicle body panel 2 with one touch by pushing in one direction from the engine room side to the vehicle room side.

Next, as shown in FIGS. 6 and 7, the washer hose 35A is connected to the opening 30b of the cylindrical portion 30, while the closing portion 30d is cut, and the washer hose 35A is fitted and connected. With this configuration, the state is the same as the state in which the washer hose has penetrated the grommet 10.

FIGS. 8 to 10 show a second half provided with a third half body.
1 shows a grommet 10 according to an embodiment. The half body 11C serving as the third half body is provided with a pipe 40 for a food opener.
Is provided on the half body 13 </ b> C of the enlarged-diameter tube portion 13.

That is, the through hole 41 is formed in the half body of the enlarged diameter cylindrical portion 13.
And a cylindrical portion 40 protruding from both peripheral edges of the through-hole 41, the tip of an internal protruding portion 40a extending into the enlarged-diameter cylindrical portion is defined as an opening 40b, and an external protruding portion 4 protruding outward.
The tip of 0c is also an opening 40d. A screw 40e is formed from the inner surface of the distal end of the outer protruding portion 40c of the cylindrical portion 40, a sleeve 42 having a thread formed on the outer peripheral surface thereof is screwed, and a rubber stopper 43 is press-fitted into the distal end of the sleeve 42 to thereby form a rubber stopper. 43
Of the sleeve 42 is pressed against the distal end surface of the sleeve 42. In addition, a seal rib 43b is protruded from the inner peripheral surface of the rubber stopper 43. The hood opener 45 is inserted through the distal end opening 40b of the inner protruding portion, passes through the sleeve 42, is sealed with the rubber stopper 42, and is pulled out from the opening 40d.

The third having the hood opener penetration portion
The first half body 11C is combined with the first half body 11C, attached to a wire harness, and mounted in the through hole of the vehicle body in the same manner as described above. After attaching the grommet to the vehicle body in this way, the hood opener 45 is made to penetrate the cylindrical portion 40.

FIG. 11 shows a grommet according to a third embodiment in which a first half body 11A and a third half body 11C are combined, and the grommet is a pipe portion 30 for a washer hose.
And a pipe portion 40 for a hood opener, so that both the washer hose and the hood opener can be penetrated.

FIG. 12 shows a grommet according to a fourth embodiment, in which two second half bodies 11B are combined.
Neither the washer hose nor the hood opener is penetrated.

[0033]

As is apparent from the above description, in the grommet of the present invention, a half body provided with a pipe for connecting a washer hose, a half body provided with a pipe for penetrating a hood opener, By preparing three types of halves without any of the above pipes, two of them are selected and combined, and four types (grommet for washer hose penetration, hood opener) A grommet for penetrating, a grommet that penetrates both the washer hose and the hood opener, and a grommet that does not penetrate both the washer hose and the hood opener) can be formed. Therefore, it is not necessary to provide a dedicated grommet for connecting a washer hose, a dedicated grommet for penetrating the hood opener, and a dedicated grommet that can be attached to both the washer hose and the hood opener, thereby greatly reducing costs. it can.

Further, since the grommet of the present invention is of a two-part type made of a resin molded product and has a configuration in which locking claws are protruded from the front end of the enlarged diameter cylindrical portion, the grommet can be easily put on the wire harness from both sides. It can be attached, the work of attaching the grommet to the wire harness becomes easy,
The burden on the operator can be reduced. In addition, it can be attached to the vehicle body from the engine compartment side to the vehicle compartment side with a one-touch operation by passing it through the enlarged cylinder part provided with locking claws, which was not possible with the conventional two-piece resin type of this type. The mounting workability of the grommet can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a grommet according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view illustrating a method of attaching a grommet to a wire harness.

FIG. 4 is a perspective view showing a method of attaching a grommet to a vehicle body.

FIG. 5 is a sectional view showing a state where the grommet is attached to the vehicle body.

FIG. 6 is a view showing a method of connecting a washer hose to the grommet.

FIG. 7 is an enlarged view of a connecting portion between a washer hose and a grommet.

FIG. 8 is a perspective view of a grommet according to a second embodiment.

FIG. 9 is an enlarged sectional view showing a state where a hood opener is attached to the grommet.

FIG. 10 is a view showing main parts of FIG. 9;

FIG. 11 is a perspective view of a grommet according to a third embodiment.

FIG. 12 is a perspective view of a grommet according to a fourth embodiment.

FIG. 13 is a perspective view showing a conventional example.

FIG. 14 is a view showing a state of mounting the vehicle body of the above-mentioned conventional example.

FIGS. 15A and 15B are perspective views showing another conventional example of a grommet.

FIG. 16 is a perspective view showing an operation of passing a wire harness through another grommet.

[Explanation of symbols]

 2 Body panel 2a Through hole 10 Grommet 11A, 11B, 11C Divided body 12 Small diameter cylinder 13 Large diameter cylinder 14 Flange 15 Engagement claw 21A, 21B Seal material 26 Water blocking agent 30 Tube portion 35A for washer hose connection, 35B Washer hose 40 Hood opener insertion tube part 45 Hood opener W / H Wire harness

Claims (2)

[Claims] 1. A cylindrical body having a small-diameter cylindrical portion, a large-diameter cylindrical portion expanding from one end of the small-diameter cylindrical portion, and a vehicle body engaging portion to be fitted into a through hole of a vehicle body panel. And a locking means for connecting the divided bodies with the wire harness sandwiched between the divided bodies, and attached to the through hole of the vehicle body panel while being attached to the wire harness. In the grommet, a first divided body provided with a washer hose connecting tubular portion penetrating the enlarged diameter tubular portion, and a second divided body provided with a hood opener insertion tubular portion penetrating the enlarged diameter tubular portion. Preparing a third divided body which is not provided with both the washer hose connecting cylinder part and the hood opener insertion cylinder part, and combining two types of the three types of divided bodies into a wire; Tie the harness Configuration and to have grommets that. 2. In each of the divided bodies, a flange portion is provided on an outer peripheral surface of the enlarged-diameter cylinder portion which is separated from the front-end opening of the enlarged-diameter cylinder portion by a required dimension, and a flange is formed from a periphery of the front-end opening of the enlarged-diameter cylinder portion. A locking claw protruding at an interval in the circumferential direction is provided, and a rubber sealing material is attached to the front side of the flange portion so as to face the locking claw, and the locking claw is provided in the vehicle body through hole. The grommet according to claim 1, wherein the seal member is configured to press the sealing member against the other surface of the vehicle body when the sealing material is engaged with the one surface of the vehicle body.