JPH0635744Y2 - Sealing material with corner piece - Google Patents

Description

[Detailed Description of the Invention] Industrial Application This invention is fitted into a window sash of a building or a vehicle, receives the edge of the window glass in its recess, seals between the window sash and the glass, and prevents rain water from entering from outside. The present invention relates to the shape of a corner portion of a sealing material that prevents dust and dirt from entering the inside.

2. Description of the Related Art Sealing materials for various window sashes and window glass of buildings are called glazing channels, commonly called Grechan,
The edge of the glass plate is fixedly received in the recess. On the other hand, a sealing material to be mounted on a sash of a vehicle door or the like is called a glass run, and the edge of the glass can be received in the recess of the glass run, and the edge of the glass can slide and move in the recess. It has a structure.

When a sealing material manufactured by extrusion molding from synthetic resin or rubber material is inserted into the corner of the window sash into a window sash that is assembled or welded, the window sash with the sealing material that is still extruded It does not follow the shape and the sealing effect of the sealing material is impaired. Therefore, various attempts have been made to match the sealing material with the shape of the sash corner of the window.

For example, a glazing channel of a sealing material body used for a window sash of a building is generally sold in a length of 130 m, and is cut to a desired length before use. And at the sash corner,
At the position of the sealing material body that is about 1 cm longer, make a cut across the base of the sealing material body and the side wall part that is continuous with both widthwise edges of the sealing material body. After that, it's set in the sash.

On the other hand, in a glass run which is a sealing material for a vehicle, two sealing material bodies are adhered via a corner piece so that the sealing material conforms to the shape of the sash corner portion, thereby achieving the purpose. That is, each end portion of the sealing material body to be adhered is arranged in the molding die at a predetermined gap so as to maintain a predetermined angle, and the sealing material body is kept at a predetermined angle while maintaining an almost original cross-sectional shape by the post-molding material. This is a method in which a corner piece in which the sealing material bodies are bonded to each other is formed by post-molding in a shape to be joined.

However, in the method of treating the corner portion of the seal material body such as used for the sash for building windows, the base material and both side wall portions of the corner portion of the seal material are cut, so that the seal material is If it is slightly deteriorated, a crack is generated from the cutting tip, and the crack further progresses, so that the sealing effect between the sash and the window glass is sharply reduced.

Further, in the method of bonding two glass run bodies for a vehicle through a corner piece, there is a thin portion such as 0.3 to 1.0 mm in cross section, so that the corner piece is formed. The adhesion area between the post-molding material and the end of the sealing material body is small, and since the sealing material body is made of a soft material, the adhesive surface cannot be sufficiently pressed,
In some cases, the adhesion was insufficient and a predetermined adhesive strength could not be obtained.

If the adhesive strength is insufficient, cracks will occur during the practical use of the sealing material, especially from the outer edge of the outer lip, and the cracks will progress along the adhesive surface to prevent rainwater and dust from entering the room. The sealing function of the sealing material was sometimes lost.

Also, in order to increase the adhesive strength, if the end surface of the sealing material body and the corner piece are face-polymerized to increase the adhesion area, the thickness of that part becomes large and the appearance becomes worse due to a step at the adhesion end. Not only that, but the sealing function also deteriorates.

An object of the present invention is to provide a sealing material with a corner piece that can solve the above various problems.

Means for Solving the Problems A synthetic resin or rubber material of the present invention is manufactured by extrusion molding, and it is fitted into the recess of the window sash to receive the edge of the window glass. In addition, a rear end edge of the window sash, which has a substantially U-shaped cross section and a base portion, and a rear end edge of the base portion, and the base portion, and the base portion, are connected to both widthwise end edges of the base portion and extend outward, respectively, and cover the opening edge of the recess of the window sash. Both sealing material main bodies consisting of the parts and the parts are extended from the ends of the respective sealing material main bodies while maintaining the almost original cross-sectional shape, and the corner pieces post-molded by the post-molding material are joined at a predetermined angle. The sealing material with a corner piece, which is integrally bonded, is a small projection that crosses the bonding surface between the sealing material body and the post-molded corner piece on the surface of the outer lip that contacts the opening edge of the window sash recess. Is provided, the above problems can be solved.

In the sealing material with a corner piece according to the present invention, a small projection is provided on the surface of the outer lip portion which is in contact with the opening edge of the window sash recessed portion, across the bonding surface between the sealing material body and the post-formed corner piece.

The small projections connect the bonding surface of the position where they are located in a glaze-like manner and firmly bond them. Further, even if a crack is generated from the outer edge of the outer lip portion, the crack is stopped at the small projection portion, and it functions to prevent further growth.

It is preferable that the small projection is provided with a recess near the outer edge of the outer lip portion, that is, near the farthest end of the cavity of the molding die into which the post-molding material is injected, corresponding to the small projection. This recess is a reservoir for the minimum amount of internal air that could not escape due to the parting surface or air vent when the molding material introduced from the injection port flows into the cavity space and reaches the end of the cavity. In addition, if the post-molding material is a thermoplastic resin, the material part introduced from the injection port first will be filled at the cavity end, but its temperature will decrease, or it will decompose thermally and generate gas. Since the material may be deteriorated and insufficiently welded to the end portion of the sealing material main body, it also serves as a reservoir for those gases and the modified material.

The size of these small protrusions is appropriately determined depending on the size of the sealing material, but in the case of a glass run of a passenger car, the length between both ends straddling the adhesive surface is 2 to 6 mm, the width is 0.5 to 3 mm, and the height is 0.2.
It is preferably about 1.5 mm. If it is smaller than this, there is no effect to reinforce the adhesive surface, and if it is too large,
The reinforcing effect does not improve so much compared to the volume.

As for the shape of the small protrusion, its vertical cross section is preferably semicircular, triangular, trapezoidal or the like. Among them, it is shaped like a hipped roof, and the slope of the part corresponding to the roof is 30 to 60 ° from the bottom
The thing of a grade is especially preferable. If the inclination is less than 30 °,
Since the injected post-molding material advances toward the seal material main body while compressing the surface of the seal material main body, a film-shaped burr is generated by the post-molding material. If it exceeds 60 °, the small protrusions may protrude from the outer lip surface to cause a large step, and the outer lip sealing function may be lost.

Embodiment As an embodiment of the present invention, a glass run with a corner piece for a vertically movable window glass mounted on a sash of an automobile door, which is a kind of sealing material, will be described with reference to the drawings.

FIG. 1 is a sectional view showing an example of the glass run main body 1.

The glass run main body 1 is connected to a base portion having a substantially U-shaped cross section for receiving the edge of the window glass and both widthwise end edges of the base portion.
Each of them consists of an outer lip portion 14, 14 that extends outward and covers the opening edge of the recessed portion of the window sash, and can be extruded from a compound such as a thermoplastic resin including a soft vinyl chloride resin, a thermoplastic elastomer, and a crosslinkable rubber. Manufactured.

The base having a substantially U-shaped cross section is the base 11, the base.
Locking lips 15,15 extending outward on both sides in the width direction of 11, a side wall portion 12,12 in which rear end edges of the base portion 11 extend substantially at right angles on both sides in the width direction, and tips of the side wall portions 12,12. It is composed of main lips 13, 13 which are continuous with the edges and extend inwardly.

In addition, in this type of sealing material, since the edge of the window glass slides in the concave portion of the base portion having a substantially U-shaped cross section, main lips 13 and 13 are added to the base portion to seal the window glass and the sealing material. ing. Therefore, the outer lip portions 14, 14 are continuous with the tip edges of the side wall portions 12, 12 and extend outward in the direction opposite to the main lips 13, 13.

FIG. 2 is a sectional view showing a state in which the glass run body 1 of FIG. 1 is fitted into the recess 21 of the window sash 2. The outer lip portions 14, 14 of the glass run main body cover the opening edge 22 of the recessed portion 21 of the window sash 2, and rainwater and dust from the vehicle outer side (left side in the drawing) form a sash and a sealing material together with the locking lips 15, 15. It prevents the glass run through the space between them and the locking lips 15 and 15 so that the glass run does not fall off the window sash.

FIG. 3 shows a perspective view of a glass run with a corner piece in which two glass run bodies 1a and 1b are bonded by a corner piece 3.

In this glass run with corner pieces, the ends of two glass run bodies 1a and 1b are placed in a molding die so that they intersect at a predetermined distance and at a predetermined angle, and after being clamped, they are melted into a cavity space and then molded. The material is injected by an injection molding method, and the corner pieces 3 are shaped so as to extend from the ends of the respective glass run bodies 1a, 1b while maintaining the cross-sectional shape of the original glass run bodies 1a, 1b and joined at a predetermined angle. And the corner piece 3 and the glass run bodies 1a and 1b are bonded to each other.
2,32 are fused and integrated. At this time, small projections 31 and 31 are formed on the surfaces of the outer lip portions 14 and 14 that are in contact with the opening edges of the window sash recesses, across the bonding surfaces 32 and 32 of the glass run bodies 1a and 1b and the post-molded corner pieces 3. It

In this example, the corner pieces 3 are not provided with the locking lips 15 and 15. The mold for the corner piece 3 becomes complicated, and the glass run bodies 1a, 1b are added to the mold.
If it is awkward to put on the original glass run body 1a, 1
It is not necessary to extend the b section while maintaining its complete shape. In addition, glass run bodies having different cross-sectional shapes, especially the heights of the side wall portions, may be bonded and integrated via a corner piece.

The material used for the post-molding is almost the same as that used for the original glass run body 1, or modified so that the hardness is high or the adhesiveness with the original glass run body is improved. In addition to these materials, there are other thermoplastic and thermosetting resin materials.

FIG. 4 is an enlarged view of the corner piece 3 portion of FIG.
It is shown that the small projections 31 and 31 crossing the bonding surfaces 32 and 32 between the glass run bodies 1a and 1b and the post-molded corner pieces 3 are provided close to the outer edges of the outer lip portions 14 and 14. .

The small protrusions 31, 31 are attached to the bonding surface 32 at the position where
It connects like a glaze and adheres firmly. Further, even if cracks are generated from the outer edges 33, 33 of the outer lip portion, the cracks are stopped by the small projections 31, 31 and the growth is prevented from further growth.

In the above example, a glass run with a corner piece that is fitted into a sash of a window glass in a door of a vehicle, particularly a passenger car and receives the edge of the sliding window glass in its recess is described as an example of the sealing material, but other constructions The sealing material with a corner piece according to the present invention can be used for sashes for window glass in objects.

FIG. 5 is a cross-sectional view of a glazing channel 5, which is an example of a sealing material used in a sash for building windows. Conventionally, the base material 51 and the side wall parts 52, 52 connected to the widthwise both ends of the base material 51 are cut at the position of the seal material main body corresponding to the sash corner portion and fitted into the sash.

In the case of this glazing channel 5 as well, since the cross-sectional shape is similar to that of the above-mentioned glass run, the sealing material main body is adhered by post-molding with a corner piece as in the case of the glass run, and at that time, at the opening edge of the window sash recessed portion of the outer lip portion 54. The sealing effect can be maintained for a long time by providing a small protrusion on the contacting surface across the bonding surface between the sealing material body and the post-molded corner piece.

As described above, in the sealing material with a corner piece of the present invention, the surface of the outer lip portion that contacts the opening edge of the window sash recess is
Since small protrusions are provided across the bonding surface between the sealing material body and the post-molded corner piece, the small projections firmly bond the bonding surfaces of the portions where they are located by connecting them in a glaze-like manner. Further, even if a crack is generated from the outer edge of the outer lip portion, the crack is stopped at the small projection portion, and it functions to prevent further growth.

In addition, the small protrusions are provided on the surface of the outer lip that contacts the opening edge of the window sash recess, so the appearance is not impaired, and the volume of the small protrusions is extremely small compared to the volume of the corner piece, so there is almost no increase in material. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a glass run main body as an example of a sealing material main body, FIG. 2 is a cross-sectional view showing a state in which the glass run main body of FIG. 1 is fitted in a recess of a window sash, and FIG. FIG. 4 is a perspective view of a glass run with a corner piece in which the glass run body is bonded with a corner piece, FIG. 4 is an enlarged perspective view of the corner piece portion of FIG. 3, and FIG. 5 is a glazing channel of another example of the sealing material body. FIG. 1,5 …… Seal material 2 …… Window sash 3 …… Corner piece 11,51 …… Base 12,52 …… Side wall 14,54 …… Outer lip 22 …… Window sash recessed opening edge 31 …… Small protrusion 32 …… Adhesive surface

Claims (1)

[Scope of utility model registration request] 1. A rear end edge formed on a base portion and both widthwise end edges of the base portion, which is manufactured by extrusion molding from a synthetic resin or a rubber material and is fitted into a recess of the window sash to receive the edge of the window glass. A base having a substantially U-shaped cross section consisting of side walls that extend substantially at right angles, and outer lip portions that extend to the outer edges of the base sash and that extend to the outer edges of the base sash. Sealing material main body is extended from the end of each sealing material main body while maintaining the almost original cross-sectional shape, and is bonded and integrated through a corner piece post-molded by a post-molding material that is joined at a predetermined angle. In the sealing material with a corner piece that has been made into a material, on the surface of the outer lip portion in contact with the opening edge of the window sash recessed portion,
A sealing material with a corner piece, characterized in that a small protrusion is provided across the bonding surface between the sealing material body and the post-molded corner piece.