JPH0329231Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a fixing structure for fastening and fixing vehicle accessories such as lamps and emblems with quick fixing fasteners, and is particularly intended for those where the fastening points are sealed. .

(Conventional technology) Vehicle accessories that require frequent replacement of parts,
In addition, relatively lightweight items are often fixed to the vehicle body using quick fasteners or a combination of screw fastening. For example, Japanese Utility Model Application Publication No. 59-39235 discloses a lamp housing that is fixed with a quick fastener consisting of a grommet and a pin.

In a conventional fixing structure of this type, for example, when waterproof sealing the mounting portion, sealing gaskets were fixed to both the grommet side and the pin side. In other words, there is a gap between the grommet and the outer wall of the car body.
Another seal was installed between the grommet and the pin.

(Problem to be solved by the invention) The reason why two gaskets are required at the fastening point using the quick fastener as described above is because it is necessary to apply a large engagement force to the engagement claw of the grommet.
This is because the grommet has an open structure that allows water to pass inside the outer wall of the vehicle body, and the engagement surface between the grommet and the pin serves as a path for water droplets to enter. Incidentally, grommets with a sealed bag-like structure are already known, but these types of grommets have problems with molding technology and are currently unable to obtain large engagement forces, and are constantly exposed to vibrations and shocks. It is not suitable for securing vehicle accessories such as lamps that are subjected to force.

The present invention was developed in view of the above circumstances, and includes a grommet having an open structure.
To provide a fixing structure for vehicle equipment using a quick fastener with a large engagement force, and to provide a simpler structure and reliable sealing of a part fastened with a quick fastener.

(Means for Solving the Problems) In the conventional fixing structure, two gaskets are inevitably required because the quick fastener directly presses the gasket to seal. The present invention focuses on this point, and by sealing between the vehicle equipment and the outer wall of the vehicle body to which it is attached, at a position surrounding the quick lock fastener, it can be fastened with only one sealing member. It is designed to seal specific parts. Specifically, as shown in FIG.
5, the seal member 14 is attached to the outer wall 1 of the vehicle body.
Sealing is performed by pressing on a and deforming it. The pressing force of the seal projection 15 is maintained by the engagement force between the grommet 13 of the quick fastener F and the pin 12. It is preferable that the seal member 14 be inserted into and supported by the pin 12 as shown in FIG. 5, but in some cases, the seal member 14 may be held by a grommet 13 so as not to be able to move.

(Function) As a result, in the present invention, since sealing is performed at a position surrounding the quick fixing fastener F, 1
Sealing can be performed with only 1 sealing member 14, and the number of members can be reduced. Further, the seal member 14 is formed by the outer wall 1a of the vehicle body and the seal protrusion 15 protruding toward the outer wall 1a.
Since sealing is performed by sandwiching the seal member 14, the surface pressure when the seal protrusion 15 presses and deforms the seal member 14 can be easily increased as necessary, and the sealing performance can be improved.

(Embodiment) FIGS. 1 to 5 show an embodiment in which the present invention is applied to a lamp, which is one of typical vehicle accessories. In FIG. 2, 1 is a vehicle body, 2 is a back door, 3 is a rear bumper, and L is a lamp provided on both sides of the rear end of the vehicle body 1. This lamp L is
It is configured as a so-called combination lamp in which a flash lamp L ₁ , a brake lamp L ₂ , and a cross clamp L ₃ are arranged in order from the top and put together into one unit. As shown in FIG. 1, the lamp L includes a lamp housing 4 which also serves as a reflector.
, a lamp lens 5 covering the outer opening thereof, and a light bulb 6 attached to the lamp housing 4 in each lamp section.

In order to attach the lamp L to the vehicle body 1, mounting seats 7 are formed at two locations on the outer edge of the lamp housing 4, and a mounting boss 8 is formed integrally with the lamp housing 4 near the back end of the cross clamp _L3 . The mounting seat 7 is fastened by a screw grommet 9 that is inserted and fixed to the outer wall 1a of the vehicle body, and a tapping screw 10 that is screwed into this through the mounting seat 7. Further, the mounting boss 8 is fastened to the vehicle body outer wall 1a by a quick fastener F.

As shown in Fig. 1, the Quick Asuna F is
It consists of a metal pin 12 that is implanted in the boss 8 and a grommet 13 that is inserted and fixed to the outer wall 1a of the vehicle body. A flanged head 12a is formed at one end of this pin 12, and an abacus bead-shaped engager 12b is formed at the other end, and the heated head 12a is press-fitted into a pilot hole provided in the boss 8. Accordingly, pin 1
2 is implanted and fixed to the lamp housing 4 so as to be integrated therewith. On the other hand, grommet 13
The grommet is composed of a plastic molded product integrally formed with a cylindrical main body 13a, a pair of engaging claws 13b facing each other in the radial direction near one end of the main body, and a flange 13c, and is configured as a so-called open structure type grommet. ing.

In order to seal the attachment portion by the quick fastener F described above, a sealing member 14 and a sealing protrusion 15 for pressing the sealing member 14 are provided. The sealing member 14 is made by punching out a rubber sheet into a circular shape, and furthermore, a mounting hole 14 is provided in the center of the rubber sheet for inserting and fitting the pin 12 therein.
It is formed by passing through a. In addition, the seal protrusion 15
is formed integrally with the lamp housing 4,
It is formed as a cylindrical wall concentric with the boss 8. The diameter of this seal projection 15 is the diameter of the grommet 13.
The outer diameter of the sealing member 14 is set to be larger than the diameter of the flange 13c and smaller than the outer diameter of the sealing member 14. Further, the seal edge 15a at the tip of the seal protrusion 15 slightly protrudes from the tip of the boss 8, and when the pin 12 is press-fitted into the grommet 13, the seal member 14 that is in circumscribed contact with the outer wall 1a of the vehicle body can be pressed and deformed. The dimensions are set as follows. In addition, seal protrusion 1
An appropriate number of reinforcing ribs 16 are provided between the boss 5 and the boss 8.

Quitsukufuasuna F configured as above
In this case, the grommet 13 is inserted and fixed into the outer wall 1a of the vehicle body in advance, and after the sealing member 14 is fitted into the pin 12, the pin 12 is press-fitted into the grommet 13 and connected. Thereby, the lamp housing 4 is fixed to the vehicle body 11. In this installed state, the seal member 14 is held between the seal protrusion 15 and the outer wall 1a of the vehicle body facing the seal protrusion 15.
The seal edge 15a is pressed and deformed to maintain a watertight state. At the same time, the flange 13c of the grommet 13 and the flange of the head 12a of the pin 12 are also compressed to maintain a watertight state. By performing sealing at two locations inside and outside of one sealing member 14 in this way, a high sealing effect can be obtained and reliable sealing can be achieved.

(Another Embodiment) FIGS. 6a and 6b show different embodiments, and the one shown in FIG. 6a differs from the above embodiment in that the sealing member 14 is supported on the grommet 13 side. different. Further, in the case shown in FIG. 6B, sealing is performed by deforming the seal member 14 by pressing only between the seal protrusion 15 and the outer wall 1a of the vehicle body. In this way, the seal member 14
The seals do not necessarily have to be in two places, inside and outside.

In addition to the embodiments described above, the seal protrusion 15 does not necessarily have to be cylindrical, and its cross-sectional shape can be selected to have any shape depending on the structure and shape of the attachment location. Further, the sealing member 14 does not have to be in the form of a sheet, and may be, for example, an O-ring shape or a molded packing having a U-shaped cross section, and its structure is not limited. Further, depending on the object to be sealed, the arrangement relationship between the pin 12 and the chromet 13 may be reversed.

(Effects of the invention) As explained above, in the present invention, when sealing a fastening point using a quick fastener, sealing is performed at a position surrounding the quick fastener, and the grommet is configured to have an open structure. Even in such a case, sealing can be performed with only one sealing member, and the number of parts can be reduced accordingly, thereby reducing manufacturing costs. In addition, since sealing is performed by sandwiching the sealing member between the sealing protrusion and the opposing outer wall of the vehicle body, by appropriately setting the shape of the tip edge of the sealing protrusion, it is possible to easily increase the surface pressure when pressing the sealing member. As a result, the sealing effect can be improved and reliable sealing can be achieved compared to the conventional sealing member in which the sealing member is sandwiched between the surfaces.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a cross-sectional plan view of the main part showing details of the lamp fixing structure, Figure 2 is a rear view of the automobile, and Figure 3 is the lamp and 4 is a rear view of the lamp, and FIG. 5 is an exploded perspective view of the quick fastener. FIGS. 6a and 6b are sectional views of main parts showing different embodiments, respectively. 1...Vehicle body, 1a...Vehicle body outer wall, L...Lamp (vehicle equipment), 4...Lamp housing, F...
Quick fastener, 12... pin, 13... grommet, 14... seal member, 15... seal protrusion.

Claims (1)

[Scope of utility model registration request] In a structure for fixing a vehicle accessory to a vehicle body using a quick fastener consisting of a grommet and a pin that engage each other, a grommet is attached to one of the vehicle accessory and the outer wall of the vehicle body to which it is attached, and a grommet is attached to the other. The pins are each fixed, and a seal protrusion that surrounds the quick lock fastener is formed integrally with the vehicle accessory between the vehicle accessory and the outer wall of the vehicle body, and a seal member is installed between the seal projection and the outer wall of the vehicle body. A fixing structure for a vehicle accessory, characterized in that the pin and the grommet are interposed so as to be pressed and deformed by a seal protrusion when the pin and the grommet are engaged with each other.