JPH0139665Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a drainage grommet that is attached to a water reservoir part of a vehicle device.

(Prior art) Conventionally, this type of drainage device has a recess c formed with a hole b formed in a panel a, as shown in Fig. 5, and an elastic plate d is attached to the recess c from the bottom surface, so that water accumulates. The elastic plate d automatically deforms and drains the water, or as shown in Fig. 6, a bowl-shaped elastic body f is attached to the hole e in the panel a, and a straight line is attached to the center bottom of the elastic body f. A notch g is provided, and when water accumulates, the notch g automatically opens to drain the water, and furthermore, the Utility Model 52-77121
The drain plug shown in the above publication is known to have a flap valve and a side hole formed in the plug attached to the vehicle body. However, these have drawbacks such as complicated panel processing or insufficient sealing properties, resulting in a high risk of water leakage.

(Problems to be solved by the invention) Therefore, this invention was devised in view of these shortcomings of the conventional technology. The purpose is to obtain a device that can reliably drain water.

(Means for Solving the Problems) In order to solve the above problems, this invention has a grommet body that is integrally formed with a bottom plate and a top plate at both ends of the rib, and is fitted into the panel hole, so that the elasticity of the top plate is The lower plate is held in close contact with the panel surface, and the downward movement of the lower plate due to the deformation of the upper plate forms a passageway from the upper plate between it and the panel surface.

(Function) By using such means, the bottom plate is usually pulled upward by the elasticity of the top plate and comes into close contact with the panel surface, preventing water from leaking. Also, when water accumulates on the panel, the water pressure prevents water from leaking. The upper plate is then pressed and moved downward, and a passageway is formed between the lower plate and the panel surface to drain water on the panel.

(Example) An example of a specific configuration of this invention shown in the drawings will be described in detail below.

1 is a panel for a water reservoir part of a vehicle device,
Drill hole 2 for grommet attachment. A drain grommet 3 is made of an elastic material such as rubber or plastic, and has an upper plate 5 and a lower plate 6 integrally connected to the upper and lower ends of a rib 4 formed in a cross shape, respectively. This upper surface plate 5 is thin, disk-shaped, and has a downwardly curved peripheral edge 7, and is provided with a water passage hole 8 for drainage. The lower plate 6 is formed into a thick disk shape, and has a flat upper surface formed into a valve seat 9.

With this structure, the grommet 3 is fitted into the hole 2 of the panel 1, and both sides of the panel 1 are held between the top plate 5 and the bottom plate 6. panel 1 by the curved part 7 of
Since the lower surface plate 6 is pressed upward through the ribs 4, the valve seat 9 on the upper surface of the lower surface plate 6 is brought into close contact with the lower surface of the panel 1, and the hole 2 is kept in a closed state. When water accumulates on the top surface of the panel 1, the water pressure causes the curved portion 7 of the top plate 5 of the grommet 3 to stretch flat against its elasticity, causing the top plate 5 to move downward. The lower plate 6 is also pushed up, and a gap 10 is formed between the valve seat 9 on the upper surface and the lower surface of the panel 1. As a result, water on the upper surface of the panel 1 is drained downward from the water passage hole 8 of the upper surface plate 5 through the gap 10. When the drainage is finished, the upper plate 5 moves upward again due to its elasticity, and the lower plate 6 also rises to come into close contact with the lower surface of the panel 1.

(Effects of the invention) As described in detail in the examples above, this invention is easy to process because the panel only needs to have one hole, and the grommet can also be attached to the central rib part of the panel. When pressed, the upper and lower double-sided plates are elastically deformed and quickly attached. Furthermore, due to the elasticity of the upper surface plate, the lower surface plate of the attached grommet can be reliably brought into close contact with the lower surface of the panel to maintain a closed state, completely sealing the hole, and reliably preventing water leakage. If water accumulates on the upper panel surface, the upper panel will automatically move downward due to the water pressure, lowering the lower panel and forming a water passage to ensure drainage. Furthermore, even if the panels are layered in double or triple layers and the holes are misaligned, the elastic deformation of the grommet ribs allows for easy installation and reliable sealing or drainage. It has excellent effects such as being able to provide an inexpensive device.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of this invention, Fig. 2 is a partially cutaway plan view, Fig. 3 is a vertical side view when the panel is installed, Fig. 4 is a longitudinal side view when draining water, Fig. 5, FIG. 6 shows a vertical side view of the conventional example. 1... Panel, 2... Hole, 3... Grommet,
4...Rib, 5...Top plate, 6...Bottom plate, 8...
...Water hole.

Claims (1)

[Scope of utility model registration request] A grommet body consisting of a bottom plate and a top plate integrally formed at both ends of the rib is fitted into the panel hole, and a water passage hole is provided on the top surface.It is made of an elastic material, has a diameter larger than the panel hole, and has a peripheral edge curved downward to form a bottom surface of the panel. A drainage grommet comprising an upper plate made up of a plate that comes into contact with the panel, and a lower plate whose upper surface periphery is held so as to be able to come into contact with the lower surface of the panel.