JPS62283034A - Sealing device for automobile - Google Patents

Abstract

PURPOSE:To ensure the durability of external appearance quality and improve closing quality for an open/close body by concealing an area from the side part of the inner side of a welt to the side part of the outside of the welt via a seal body with a cloth cover having a larger elongation percentage in a direction orthogonal with the longer side of the welt. CONSTITUTION:A body side seal 50 is provided with a resin welt 60 connected to the coupling flange 1c of a roof side rail 1 as a part of an automobile body. Also, a rubber seal 70 is concurrently extrusion bonded to the side part 62 of the outside of the welt 60. Furthermore, the side part 64 of the inner side of the welt 60 to the side part 62 of the outside of the welt 60 via a seal body 70 is concealed with a cloth cover 80. In this case, the cover 80 is made of cloth having an elongation percentage (beta) in a direction 'K' orthogonal with the longer side of the welt 60 larger than an elongation percentage (lambdaalpha) in a direction 'L' along the longer side of the welt 60. According to the aforesaid constitution, external appearance quality can be maintained for a long period and good closing quantity can be kept for an open/close body.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a sealing device for an automobile, and is particularly suitable for a body side sealing device around a side door.

[Conventional technology J An example of a conventional body side seal device is shown in FIG.

(Refer to Japanese Unexamined Patent Publication No. 12823/1983) In the same figure,
Reference numeral 1 denotes a roof site rail constituting the opening periphery of the vehicle body, which forms a closed cross section with an outer panel 1a and an inner panel 1b, is joined by upper and lower flanges 1c, and is installed vertically in the longitudinal direction of the vehicle body. Reference numeral 3 denotes a drip channel in which one side 3a is joined to the roof site rail outer panel 1a and the multi-side portion 3b is joined to the roof panel 5;
A drip seal 7 that comes into elastic contact with a door D, which will be described later, is attached to b. D is a side door as an opening/closing body, and the door main body 9 is composed of an outer panel 9a and an inner panel 9b as a whole.A communication panel 11 is joined to this door main body 9, and a roof sight is attached to this communication panel 11 when the door is closed. A door weather strip 13 that comes into elastic contact with the rail outer panel 1a is attached, and a glass run 19 that comes into elastic contact with the elevating door glass 17 via a retainer 15 is attached. Reference numeral 21 denotes a body side seal fitted to the flange 1C of the roof sight rail 1, which is composed of a roughly U-shaped resin welt 23 made of vinyl chloride or the like and a rubber seal body 25 made of sponge rubber or the like. .

The welt 23 has both sides 23a and 23 on the inside and outside of the car.
By holding the flange 1c between the lip-shaped holding parts 23c and 23d formed inside the flange 1c, the flange 1c is
It is attached to c.

The seal body 25 is provided in a protruding manner on the side part 23b of the welt 23 on the outside of the vehicle, and comes into elastic contact with the communication panel 11 of the door D when the door D is closed, thereby sealing the inside and outside of the vehicle interior. Both the welt 23 and the seal body 25 are extruded, and the seal body 25 is bonded to the welt 23. The manufacturing method is to extrude the welt 23 and the seal body 25 at the same time, or to adhere the molded seal body 25 to the molded welt 23, but in this example, simultaneous extrusion molding is used. It shows things. In addition, 27 in the figure
is a door satushmol. Therefore, the vehicle body and the door D have a drip seal 7, a door weather strip 13. The body side seal 21 provides triple sealing.

[Problems to be Solved by the Invention] By the way, in such a body side seal 21, the welt 23 made of resin such as vinyl chloride can have various colors, and can be colored to match the interior color of the vehicle interior. Although it is possible to apply a color with good appearance quality, the seal body 25 made of rubber such as sponge rubber is required to have good sealing properties, weather resistance, ozone resistance, and durability, so black synthetic rubber is used. The occupants will see something black on the other side of the welt 23 that matches the interior color, which poses a problem of impairing the quality of the exterior appearance of the interior.

Further, when the door D is opened, the periphery of the opening of the vehicle body becomes black, which is different from the vehicle body color and the interior color, which may impair the quality of the exterior appearance. Therefore, in order to solve the above-mentioned appearance quality problem, the visible part of the body side seal 21 from the welt 23 to the seal body 25 is changed to the interior color.
One idea is to wrap the vehicle in a fabric that matches the color of the vehicle to improve its exterior quality.

However, when wrapping the body side seal 21 with fabric in this way, it is necessary to glue the body side seal 21 and the fabric because if the fabric is simply wrapped, it will wrinkle or sag. Adhesion is generally poor, and the fabric may become a body side seal after long-term use.
The problem arises that it becomes easy to peel off from the first layer, making it difficult to ensure good durability and appearance quality.

The present invention was made in view of the above-mentioned situation, and it is an object of the present invention to provide a sealing device for an automobile that has good durability and improved appearance quality.

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention includes a resin welt fitted to a peripheral flange of an opening of a vehicle body, and a resin welt protruding from the side of the welt on the outside of the vehicle. , a sealing device for an automobile comprising a rubber sealing body that comes into elastic contact with an open body,
From the inboard side of the welt through the seal body to the outboard side of the welt, the elongation rate in one direction along the direction perpendicular to the welt longitudinal direction is greater than the elongation rate in the direction along the welt longitudinal direction. The object of the present invention is to provide a sealing device for an automobile, characterized in that it is covered with a cloth cover.

[Example] In FIGS. 1 and 2, the body side seal 50 includes a welt 60 made of resin such as PVC fitted to the joint 7 flange 1C of the roof site rail 1 as a vehicle body, and a welt 60 made of resin such as PVC, and the outer side of the welt 6o. Sponge rubber (for example, a continuously extruded sponge made of ethylene propylene rubber and coated with urethane), etc., which is adhered to the side part 62 of the door by co-extrusion molding and comes into elastic contact with the door as an opening/closing body (see door D in Figure 3). A rubber seal body 70 is provided, and a fabric cover 80 extends from the side 64 of the welt 60 on the inside of the car through the seal body 70 to the side 62 of the welt 60 on the outside of the car.

The welt 60 is formed into a substantially U-shape, and has both side parts 62 and 64.
A lip-shaped holding portion 66 that comes into elastic contact with the flange 1c from the inside of the
．． 68 is provided protrudingly.

The seal body 70 is formed along the side part 62 of the welt 60, and includes a base part 72 fixed to the base part, a lip 74 extending upward from the lower end of the base part 72, and an intermediate part of the base part 72 and a tip part of the lip 74. The connecting bridge portion 76 forms a substantially triangular hollow portion 78.

Both ends 82 and 84 of the fabric cover 80 are connected to the welt 6.
The adhesive 90 is used to bond the tip of the side 62 on the outside of the car and the tip of the side 64 on the inside of the car, and also from the side 64 on the inside of the car to the side 62 on the outside of the car. It is bonded with adhesive 90.

What is important here is that the elongation rate of the fabric cover 80 is predetermined.

In other words, a fabric is used in which the elongation rate β in the direction perpendicular to the longitudinal direction of the welt 60 is set to be larger than the elongation rate α in the direction along the longitudinal direction of the welt 60 (α<β). That's true. For example, if α is 30% (the increase rate of the length when a tensile load is applied to the length when no tensile load is applied), or about 1.3 times, then β is 100%, or twice Good rank.

This cover 80 is colored in a color that matches the interior color or the vehicle body color, and is designed to improve the appearance quality of the interior of the vehicle or when the door is opened.

With this configuration, the fabric cover 80 wraps around the body side seal 50 and is fixed to the welt 60 with the adhesive 90, so that wrinkles do not occur in the fabric.

Also, when the seal body 70 comes into elastic contact with a door (not shown) (see door D in FIG. 3) when the door is closed, the elongation rate of the cover 80 in the direction is large; As shown in FIG.
The cover 80 also extends in the opposite direction, so that the bridge portion 76 is not compressed and deformed to increase the reaction force, and the cover 80 is not stretched.

Therefore, the lip 74 and the bridge part 76 come into elastic contact with the door by bending with weak reaction force characteristics, and the cover 80 also extends in the direction, so the operation force for closing the door does not become large and the door can be tightened easily. Become. Further, since the cover 80 has a sufficient elongation rate in the direction, the fabric will not break due to repeated opening and closing of the door. In addition, in the embodiment, the cloth cover 80 and the lip 74 of the seal body 70 are not bonded with the adhesive 90, but
The sealing body 70 and the cover 80 can be bonded together if sufficient elongation of the fabric cover 80 in the direction is ensured. The adhesive 90 used at this time is preferably a non-drying and stretchable type, rather than a type that hardens.

[Effects of the Invention] According to the present invention, it is possible to maintain the appearance quality for a long period of time and to ensure good closing performance of the opening/closing body, which is a highly practical effect.

[Brief explanation of drawings]

FIGS. 1 and 2 show an embodiment of the present invention, and are a perspective view and a sectional view of a main part, respectively, and FIG. 3 is a sectional view of a conventional example of a sealing device around a door. Explanation of symbols indicating main parts of the drawings 1... Vehicle roof site rail 1C... Joint flange 50... Body side seal 60... Welt 62, 64... Side part 70... Seal body 80...Fabric cover 90...Adhesive agent Patent attorney Yasu Miyoshi Male:::';bu“
Ir'＞-JLt Figure 1 Yoi bow, N1 t/7%
To...,1. Two 111 17-Two 111-Figure 8

Claims (1)

[Claims] A sealing device for an automobile comprising a resin welt fitted to a peripheral flange of an opening of a vehicle body, and a rubber seal body protruding from the side of the welt on the outside of the vehicle and coming into elastic contact with an opening/closing body. Made of fabric whose elongation rate in the direction perpendicular to the welt longitudinal direction is greater than the elongation rate in the direction along the welt longitudinal direction from the inner side of the welt through the seal body to the outer side of the welt. A sealing device for an automobile, characterized in that it is covered with a cover.