JP2004215334A - Grommet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a grommet in which a decision can be made at a glance whether a panel is fixed surely or not. <P>SOLUTION: The grommet 1 comprises an inner member 2 provided, at the outer circumferential part 4A thereof, with a plurality of locks 5 engaging with a panel 10, an outer member 3 being fixed to the inner member 2 while surrounding the outer circumferential part on one end side thereof and provided with a seal part 7 being fixed to the panel 10, and a tubular part 11 for passing electric wires provided in the outer member 3. A marker lock 6 is provided independently from the engaging lock 5 at the outer circumferential part 4A of the inner member 2 such that the marker lock 6 engages with the panel 10 when the inner member 2 inserted into the opening 10A of the panel 10 engages with one surface of the panel 10 and then the inner member 2 is inserted furthermore. The marker lock 6 is provided at a visible point on the outer circumferential part 4A of the inner member 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a grommet for passing an electric wire through an opening of a panel of a vehicle body or an electric device of an automobile, and as a typical example, a wire harness is inserted into a through hole of a body panel of an automobile. The present invention relates to a grommet to be mounted, and more particularly to a grommet that allows a user to confirm at a glance whether or not the grommet is securely mounted in a proper state in a vehicle body panel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when wiring a wiring harness through a vehicle body panel or the like that forms a partition between the outside and the inside of an engine room of an automobile, the wiring harness is penetrated through an opening formed in the body panel through a grommet. As shown in FIG. 6, this type of grommet 100 includes an outer member 101 molded from rubber or an elastomer, and a resin inner member 102 inserted into a panel opening. The outer member 101 includes a small-diameter cylindrical portion 103 that is in close contact with the outer periphery of the wire harness, a pedestal portion 104 formed at one end of the small-diameter cylindrical portion 103 to hold the inner member 102, and an inner peripheral side of the pedestal portion 104. And a sealing part 105 for pressing water against the panel to seal water, and a water blocking agent injection part 106 for preventing water from entering between electric wires. The inner member 102 includes a cylindrical portion 107, a plurality of locking locks 108 provided on an outer peripheral portion of the cylindrical portion 107, and a flange 109 (see FIG. 6) formed on a rear end side of the cylindrical portion 107. It is configured. 7 and 8 show a state in which the grommet 100 shown in FIG. 6 is attached to the opening 10A of the panel 10.
[0003]
In the conventional grommet 100 shown in FIGS. 6 to 8, for example, when four locking locks 108 are provided, when the grommet 100 is mounted on a box-shaped panel 10 as shown in FIG. Lock 108 cannot be seen, and it cannot be confirmed whether or not the lock is locked. When the thickness of the panel 10 is large, it is rare that the plurality of locking locks 108 lock at the same time, and there is a risk that some non-locked portions may be overlooked.
[0004]
In view of the above, there has been developed a device that can easily confirm whether or not the locking lock is securely locked when the grommet is mounted on the panel (for example, see Patent Document 1). This includes a small-diameter cylindrical portion that is in close contact with the outer periphery of the wire harness, and a large-diameter portion that has an engagement groove that engages with a through hole of the vehicle body panel on the outer peripheral surface while increasing in diameter from one end of the small-diameter cylindrical portion. In a grommet formed by protruding a seal lip that presses against the vehicle body panel around the through hole from the side wall edge of the engagement groove, a mounting confirmation mark having a color different from the color of the grommet is provided on an outer surface of the seal lip. When the seal lip is deformed radially outward and pressed against the vehicle body panel, the above-mentioned mounting confirmation mark can be made to have an external appearance.
[0005]
[Patent Document 1]
JP-A-9-63386 (page 3-4, FIG. 1)
[0006]
[Problems to be solved by the invention]
Even in the case of Patent Document 1, when mounted on a box-shaped panel 10 as shown in FIG. 8, the lower seal grip could not be visually observed, and the locked state could not be confirmed.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a grommet that allows a user to confirm at a glance whether or not a grommet has been securely mounted on a panel.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an inner member having a plurality of locking locks provided on an outer peripheral portion thereof, the plurality of locking locks being locked to one surface of an opening of a panel of a vehicle body, an electric device, or the like; An outer member provided with a seal portion attached to the inner member so as to surround the outer peripheral portion on one end side of the panel, and a seal portion attached to the other surface of the opening of the panel; In the grommet provided with the cylindrical portion, a mark lock is provided separately from the lock for locking on the outer peripheral portion of the inner member, and this inner member is inserted into the opening of the panel and locked on one side of the panel. After the inner member is further inserted, the mark lock is locked to the panel when the inner member is further inserted, and the mark lock is provided at the outer peripheral portion of the visible inner member.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[0010]
In the embodiment shown in FIG. 1, the grommet 1 includes an inner member 2 and an outer member 3, and an outer peripheral portion 4 </ b> A of a cylindrical portion 4 of the inner member 2 has an opening 10 </ b> A of a panel 10 such as a vehicle body or an electric device. A plurality of locking locks 5 locked on one side are provided. Further, a mark lock 6 is provided on the outer peripheral portion 4A of the inner member 2 separately from the lock 5 for locking. The mark lock 6 is provided at a visible position. In the embodiment shown, it is provided in the middle of the two locking locks 5.
[0011]
The outer member 3 combined with the above-described inner member 2 includes a seal portion 7 provided so as to surround an outer peripheral portion on one end side of the inner member 2, a pedestal portion 8 for holding the inner member 2, It comprises a water impermeable agent injection portion 9 formed on the outside and a small-diameter cylindrical portion 11 which is in close contact with the outer periphery of the electric wire. The outer member 3 is formed from rubber or an elastomer. The configuration of the outer member 3 is the same as that described as the conventional example.
[0012]
FIG. 2 shows a state in which the grommet 1 is mounted on the panel 10, and shows a state in which the mark lock 6 is locked on one side of the panel 10. When the inner member 2 is inserted into the opening 10A of the panel 10, the mark lock 6 is pressed against the cylinder 4 side, and when the mark lock 6 comes out of the opening 10A, the cylinder force is generated by the spring force. Return in the direction away from 4. In a state where the mark lock 6 is returned, its tip is locked on one side of the panel 10. Further, the seal portion 7 is in close contact with the other surface of the panel 10 while maintaining watertightness. The pedestal portion 8 of the outer member 3 is mounted on the flange 4B of the inner member 2.
[0013]
The inner member 2 is preferably made of resin molded by injection molding or the like. The lock 5 for locking and the lock 6 for marking are fixed at one end to the front end surface side of the cylindrical portion 4 of the inner member 2, the free end is floated from the inner member 2, and the free end is moved toward the inner member 2. It is made of a leaf spring-like member having a spring property that returns to its original state after being pushed. The locks 5 and 6 made of such a leaf spring resin are formed at the same time when the inner member 2 is formed from a synthetic resin material. The mark lock 6 formed from a leaf spring-like member is formed to be wider (for example, about twice) than the width of the locking lock 5 so that it can be easily viewed.
[0014]
FIGS. 3 and 4 are cross-sectional views showing a state immediately before the inner lock 2 is inserted into the opening 10A of the panel 10 and the lock 5 and the lock 6 are locked together. of h ₁ to the height from the front surface to the panel 10 of the inner member 2 of the immediately _preceding, from the front end surface of the inner member 2 immediately before the mark lock 6 is locked to the panel 10 to panel 10 but to lock the panel 10 with a height of _{h 2,} a relationship of _h 1 <h _2. As a result of the relationship h ₁ <h ₂ , the mark lock 6 is locked to the panel 10 after the lock 5 is locked to the panel 10. Thus, the locked state of the locking lock 5 can be confirmed by visually checking the mark lock 6. A locking step 5A for locking the corner of the opening 10A of the panel 10 is formed at the free end of the locking lock 5.
[0015]
In another embodiment shown in FIG. 5, the mark lock 6 is colored differently from the outer peripheral portion 4 </ b> A of the inner member 2. This makes it easy to visually check the mark lock 6.
[0016]
In the above-described embodiment, the mark lock 6 is provided only at one position, but it is also possible to provide two or more mark locks. In addition, the inner member 2 in the above-described embodiment is formed from two members that are divided into two parts having substantially the same size on the left and right. In the case of the grommet 1 that is attached to the relatively large opening 10A, such an inner member 2 is used. It is preferable that the inner member 2 is divided into two parts from the viewpoint of production and the like.
[0017]
【The invention's effect】
INDUSTRIAL APPLICABILITY As described above, according to the present invention, an inner member provided with a plurality of locking locks which are locked on one side of an opening of a panel of a vehicle body, an electric device, or the like on an outer peripheral portion; An outer member provided with a seal portion attached to the inner member so as to surround the outer peripheral portion on one end side of the panel, and a seal portion attached to the other surface of the opening of the panel; In the grommet provided with the cylindrical portion, a mark lock is provided separately from the lock for locking on the outer peripheral portion of the inner member, and this inner member is inserted into the opening of the panel and locked on one side of the panel. After the inner member is further inserted, the mark lock is locked to the panel when the inner member is further inserted. The mark lock is provided at the outer peripheral portion of the visible inner member, so that the mark lock By checking the status, it is possible to see exactly locked state of the locking engagement. Also, in order to lock the mark lock immediately after the locking lock is locked, the height from the front end surface of the inner member to the panel immediately before the locking lock locks to the panel is adjusted. h _1, and the height from the front end surface of the inner member immediately before the mark lock is locked to the panel until the panel and h _2, by a relation of h 1 _{<h 2,} can be easily realized . In addition, it is extremely easy to visually confirm the mark by coloring the mark lock or forming the mark lock larger than the locking lock.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a preferred embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state where a mark lock is engaged with a panel.
FIG. 3 is a cross-sectional view immediately before a locking lock is locked.
FIG. 4 is a cross-sectional view just before the mark lock is locked.
FIG. 5 is a perspective view showing another embodiment.
FIG. 6 is a perspective view showing a conventional example.
FIG. 7 is a sectional view showing a state in which the locking lock is locked to the panel.
FIG. 8 is a perspective view showing a state where a conventional grommet is mounted on a panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Grommet 2 Inner member 3 Outer member 4 Cylindrical part 4A Outer peripheral part 5 Lock for locking 6 Lock for mark 7 Seal part 11 Cylindrical part

Claims (7)

An inner member provided with a plurality of locking locks which are locked to one side of an opening of a panel of a vehicle body, an electric device, or the like at an outer peripheral portion, and an inner member surrounding the outer peripheral portion at one end side of the inner member. An outer member provided with a seal portion attached to a member and mounted on the other surface of the other side of the opening of the panel, and a grommet including a tubular portion for passing an electric wire provided on the outer member,
A grommet, wherein a mark lock is provided on an outer peripheral portion of the inner member separately from the lock for locking. After the inner member is inserted into the opening of the panel and locked on one side of the panel, the mark lock is locked to the panel when the inner member is further inserted. Item 2. A grommet according to item 1. The front end surface of the to panels height of the inner member immediately before the locking lock is locked to the panel h _1, from the front end surface of the inner member immediately before the mark lock is locked to the panel until the panel height grommet according to claim 1 or 2 When h _2, characterized in that a relationship of h 1 _{<h 2} a of. The grommet according to any one of claims 1 to 3, wherein the mark lock is colored differently from an outer peripheral portion of the inner member. The grommet according to any one of claims 1 to 4, wherein the size of the mark lock is larger than the size of the locking lock. The locking lock and the mark lock have a spring fixed at one end to a front end face side of the inner member, a free end side floating from the inner member, and returning to its original state after the free end is pushed toward the inner member side. The grommet according to any one of claims 1 to 5, wherein the grommet is made of a leaf spring-like member having a property. The grommet according to any one of claims 1 to 6, wherein the inner member is formed of a synthetic resin material, and the locking lock and the mark lock are formed simultaneously when the inner member is formed.

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