JPH0445934Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is based on a rubber-based adhesive layer having a butyl rubber-based adhesive layer between the flange surface for attaching a window glass to an automobile body and the surface of the window glass attached to this flange surface. Made of foamed elastic material and sealed.
This invention relates to a sealing block for automobile window glass.

[Prior art]

Conventionally, as shown in the drawings from FIG. 1 to FIG. 3, a flange surface 100a of a window glass attachment flange 100 provided in a window glass attachment opening 10 of an automobile body, and a window glass surface 20 attached to this flange surface 100a. Between these 10 sides
A rubber-based foamed elastic body 3 having a butyl rubber-based adhesive layer (hereinafter referred to as the adhesive layer) that is adhered to 0a and 20 is set and sealed, and this elastic body 3 functions as a sealing material. (Hereinafter, this elastic body 3 will be referred to as a sealing material 3.
).

Here, this sealing material 3 is a subassembly that is bonded in advance along the entire circumference of the window glass surface 20 of the window glass 2, and the exposed side of the sealing material 3 in this subassembly state is Adhesive layer, i.e. flange surface 10 of vehicle body 1
The adhesive layer on the side to be adhered to 0a is protected with release paper (not shown) or the like.

Then, in this sub-assembly state, the window glass 2 was roughly positioned with respect to the vehicle body 1, the release paper of the adhesive layer of the sealant 3 was peeled off, and this adhesive layer was brought into contact with the flange surface 100a of the vehicle body 1. By pressing and compressing the sealing material 3 in this state, the sealing material 3 is bonded to the flange surface 100a of the sealing material 3.

Note that, as described above, this sealing material 3 is adhered to the flange surface 100a of the vehicle body 1 and the window glass surface 20 of the window glass 2, so that these both surfaces 100a,
20, and is not made of a fluid sealer or the like, but is made of a so-called sealing block that is shaped into a block shape and is elastically deformable as shown in the figure.

On the other hand, the window glass 2 is fixed using a molding 7 and a bolt (not shown) attached to the molding 7.
Accordingly, the window glass mounting opening 10 of the vehicle body 1
This is accomplished by fastening it to the window glass mounting flange 100 of.

Here, a method of adhering the sealing material 3 to the flange surface 100a of the vehicle body 1 by pressure compression will be described in detail.

As described above, the sealing material 3 is made of a rubber-based foamed elastic body, and compression crushing margins (not shown) are set above and below the sealing material 3.

Then, while the sealing material 3, which has been bonded in advance to the window glass surface 20 of the window glass 2 to form a subassembly, is brought into contact with the flange surface 100a of the vehicle body 1 at an appropriate position, By pressing from the vertical direction, the flange surface 100a and the window glass surface 20 are compressed by the crushing allowance.
As described above, the window glass 2 is fastened and fixed to the window glass mounting flange 100 of the vehicle body using bolts, which are another fixing means, at a position different from the sealing material 3. .

This compression of the sealant 3 generates a repulsive force inside it, and this repulsive force causes the adhesive layer of the sealant 3 to strongly adhere to the window glass surface 20 and the flange surface 100a of the vehicle body 1. By being pressed, this flange surface 10
A seal is formed between Oa and the window glass surface 20 to prevent water, dust, etc. from entering the vehicle interior from the outside.

The state in which the window glass 2 is attached to a proper and regular mounting position by the fixing means while the sealing material 3 is pressed and compressed in this manner is shown by the solid line in FIG. 3.

In addition, the crushing margin of the sealing material 3 performs a sealing function due to the repulsive force generated by compression, and the elastic deformation of the sealing material 3 also prevents manufacturing errors and assembly errors of each of the members. Since it is possible to follow the data, it is possible to fulfill the function of absorbing these errors.

This sealing material 3 is often bonded to the window glass surface 20 of the window glass 2 in a stretched state at the window glass corner portion 8 shown in FIG. The reason for this is explained below.

A positioning jig for the sealing material 3 is used to adhere the sealing material 3 all around the window glass 2 and at a predetermined position on the window glass surface 20. This positioning jig is a frame-shaped jig having an outer circumferential side wall that can be positioned by abutting the inner circumferential side of the sealing material 3, and is fixed to the window glass 2 during use.

The sealing material 3 is positioned with its inner circumferential side in contact with the outer circumferential side wall of the jig and is adhered to the window glass surface 20 of the window glass 2. However, in an attempt to adhere accurately to the proper position, a tensile force is applied to the sealing material 3, and the inner circumferential side portion strongly contacts the outer circumferential side wall, which tends to cause the adhesive to adhere to the window glass surface 20. Sealing material 3 adhered to window glass surface 20 in such a stretched state
Residual stress occurs at the corner bends.

The corner bent portion of this sealing material 3 is in a state where it is about to return to its original length due to residual stress (stress relieving state), and the corner bent portion moves in the direction of arrow A, e.g. Second
This causes a movement toward the state shown by the two-dot chain line in the figure. It is well known that the butyl rubber adhesive layer provided on the sealing material 3 has poor adhesive ability in areas where forces such as stress relaxation are applied, and that this tendency becomes more pronounced when heat is applied.

Since the adhesive layer adhered to the window glass surface 20 of the sealant 3 is exposed to strong direct sunlight, it is predicted that the temperature will rise faster than the adhesive layer adhered to the flange surface 100a of the vehicle body 1.

Therefore, the adhesive ability of the adhesive layer adhered to the window glass surface 20 may become lower than the adhesive ability of the adhesive layer adhered to the flange surface 100a of the vehicle body 1.

In this state, the degree to which the adhesion ability of the adhesive layer of the sealant 3 overcomes the residual stress of the sealant 3 and relaxes the stress (movement in the direction of arrow A in Figure 2) is the portion of the sealant 3 on the window glass surface side. is larger than the portion of the sealing material 3 on the flange surface side of the vehicle body 1.

As a result of stress relaxation in the part of the sealing material 3 on the window glass surface side being more advanced than in the part on the flange surface side of the vehicle body 1, a cross-sectional collapse of the sealing material 3 as shown by the two-dot chain line in FIG. 3a occurs. As a result, the adhesive layer may shift or peel off, making it impossible for the sealing material 3 to sufficiently perform its original sealing function.

[Purpose of invention]

The purpose of this invention is to connect and support the sealing material made of a block-shaped rubber foam elastic body interposed between the window glass surface and the vehicle body flange surface with another new pad. This is intended to suppress various deformations and cross-sectional collapse of the sealant.

[Structure of the idea]

In order to achieve this purpose, the structure of the sealing block for automobile window glass of this invention is as follows:
Between the flange surface 100a of the window glass attachment flange 100 provided in the window glass attachment opening 10 of the automobile body 1 and the window glass surface 20 attached to this flange surface 100a, these both surfaces 100
A, 20 has a butyl rubber adhesive layer, and a block-shaped rubber-based foamed elastic body 3 is attached along the outer edge of a nearly rectangular window glass formed at the four curved corners. In sealing an automobile window glass by setting and sealing the entire circumference, the rubber-based foamed elastic body 3 has an inner peripheral side portion 30 near the center of the window glass 2 and a window glass surface 20.
A cover 4 made of an elastic body having a thermosetting adhesive or an adhesive layer on the surface connecting the window glass surface 30 in the central direction of the window glass 2 from the position where the rubber foam elastic body 3 is set; 5 is provided at least at the corner portion of the window glass, and the inner peripheral side portion 30 of the rubber foam elastic body 3 at the corner portion is supported by the pad 4 or 5.

[Effect of idea]

Window glass mounting flange surface 100a of vehicle body 1
When the sealing material 3 is interposed and bonded between the window glass surface 20 and the window glass surface 20, internal stress occurs in the sealing material 3 at the window glass corner 8 to try to return to a free state, or thermal stress due to solar heat occurs. , the conventional structure (third example) in which the adhesive ability of the sealant 3 was impaired, resulting in displacement or peeling of the adhesive layer or a collapse of the cross section of the sealant 3.
In comparison to the sealing block for an automobile window glass of this invention, the sealing block of this invention has a block-shaped rubber-based foamed elastic body 3 with an inner peripheral side portion 30 near the center of the window glass 2, and a window glass surface 20. A portion of the window glass surface 30 in the central direction of the window glass 2 from the position where the rubber-based foam elastic body 3 is set,
They are connected via a pad 4 or 5 made of an elastic body having a thermosetting adhesive or an adhesive layer on its surface, and the inner peripheral side portion 30 of the elastic body 3 made of rubber foam is supported by this pad 4 or 5. By doing so, the following effect (a) can be obtained.

(b) It is possible to suppress large deformation of the sealant 3 due to variations in the installation of the sealant 3, internal stress at the corner portion 8 of the window glass in the sealant 3, and thermal stress caused by solar heat. , it is possible to suppress the cross-sectional collapse of the sealing material 3, and even if there are variations in the assembly of the vehicle body 1 or the window glass 2, large deformation and cross-sectional collapse of the sealing material 3 can be suppressed,
The adhesive layer of the sealing material 3 will not shift or peel off from the flange surface 100a of the vehicle body 1 or the window glass surface 20, and the adhesive layer of the sealing material 3 on the window glass surface 20 side, which is particularly susceptible to thermal stress caused by solar heat, will adhere. This increases the ability of the sealant 3 to prevent the adhesive layer from shifting or peeling due to thermal stress caused by solar heat.
The original sealing function can be reliably and sufficiently performed.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings from FIG. 4 to FIG. 5b show an embodiment of this invention, and a window glass attachment flange 100 is provided in the window glass attachment opening 10 of the automobile body 1 shown in FIG. Yes, the window glass 2 is attached to this window glass mounting flange 100.
is fixedly attached by a molding 7 and a bolt (not shown) attached to the molding 7.

Further, between the flange surface 100a of the vehicle body 1 and the window glass surface 20 of the window glass 2, there is a sealing member made of a rubber foam elastic body having a butyl rubber adhesive layer bonded to both surfaces 100a, 20. A material 3 is interposed, and a repulsive force generated by pressing and compressing the sealing material 3 against the flange surface 100a seals between the flange surface 100a and the window glass surface 20.

Note that this sealing material 3 is not a fluid sealer or the like, but is made of a so-called sealing block that is preformed into a predetermined block shape and can be elastically deformed.

and an inner circumferential side portion 30 of the sealing material 3 made of a rubber-based foamed elastic body, which is closer to the center of the window glass 2;
As can be seen from FIG. 5a, there is a portion of the window glass surface 20 of the window glass 2 in the central direction of the window glass 2 from the position where the sealing material 3 is set and interposed. A pad 4 having a triangular cross section and made of an elastic body having a thermosetting adhesive or an adhesive layer on its surface is adhesively disposed.

That is, the base side 4a and the height side 4b of this pad 4
are the inner circumferential side portions 30 of the sealing material 3, respectively.
and the predetermined portion of the window glass surface 20, these two parts 30, 20 are connected, and the inner peripheral side part 30 of the sealing material 3 is supported by the pad 4. This is what is called reinforcement.

Further, FIG. 5b shows an embodiment in which the shape of the pad is changed, and the inner peripheral side portion 30 of the sealing material 3 and the predetermined portion of the window glass surface 20 are connected to the pad 5 having a rectangular cross section. They are connected together.

That is, this padding member 5 having a rectangular cross section is provided with adhesive layers 6 on the surfaces of one long side 5a and one short side 5b, respectively, and the one long side 5a is attached to the inner circumferential side of the sealing material 3. 30 and one of the short sides 5b are bonded to the predetermined portions of the window glass surface 20, respectively.

Then, due to the intervening adhesion of this pad 5, like the pad 4, the inner circumferential side portion 3 of the sealing material 3
0 and the predetermined portion of the window glass surface 20, and support and reinforcement of the inner peripheral side portion 30 of the sealing material 3 are performed.

In addition, regarding the adhesion of the pad 4 shown in FIG. 5a, it is also possible to use a structure in which an adhesive layer 6 is provided and adhere using this adhesive layer 6, as in the pad 5 shown in FIG. 5b. good.

Then, in the window glass corner part 8 shown in FIG. 4, internal stress occurs due to bending of the sealing material 3 to try to return to the free state, or thermal stress due to solar heat occurs, causing the sealing material 3 to deform. Also, by setting the pads 4 and 5 as shown in FIGS. 5a and 5b, the inner peripheral side portion 30 of the sealing material 3 can be reliably supported and so-called reinforced. material 3
It is possible to suppress large deformation of the structure, and suppress the collapse of its cross section.

Furthermore, if there are manufacturing errors in each of the parts, variations in the installation of the sealant 3, variations in the assembly of the vehicle body 1 or the window glass 2, etc., and due to these variations, the sealant 3 may not be applied to the vehicle body. Even when the window glass 2 cannot be pressed and compressed in the vertical direction to the flange surface 100a of the window glass 2, the sealing material 3 and the pad 4 or 5 are elastic. The pad 4 or 5 connects the inner circumferential side 30 of the sealing material 3 to a predetermined portion of the window glass surface 20, and is made of a deformable elastic material. Since the inner circumferential side portion 30 is supported and reinforced, the sealing material 3 is able to correct the window glass 2 to the normal mounting position with the minimum necessary elastic deformation, so the sealing material 3 is necessary. It is possible to suppress large deformation without deforming to a greater extent than above, and it is possible to suppress collapse of the cross section as in the case of the generation of various stresses described above.

Therefore, in any such case,
As shown in FIGS. 5a and 5b, the pad 4 or 5 can suppress large deformation of the sealing material 3.
Since the cross-sectional collapse of the sealing material 3 can be suppressed, displacement and peeling of the adhesive layer of the sealing material 3 can be reliably prevented.

By preventing the adhesive layer of the sealant 3 from shifting and peeling, the sealant 3
The original sealing function can be reliably and sufficiently performed.

In addition, the pad 4 having a triangular cross section shown in FIG. 5a,
The intervening adhesion points of the pad 5 having a rectangular cross section shown in FIG. 5b are not limited to the locations shown in FIGS. Any location may be used as long as it is along the entire circumference of the sealing material 3 (inner circumferential side portion 30), which is pre-adhered to the sealant 3, and the entire circumference including the window glass corner portion 8 shown in FIG. Alternatively, it may be partially interposed and bonded to a part of the entire circumference.

However, it is desirable that the pads 4 or 5 be interposed and adhered to the window glass corner portions 8 and the locations where the sealing material 3 cannot be pressed and compressed in the vertical direction.

Since this invention is constructed and operates as described above, it is possible to achieve the above-mentioned effects of this invention.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the opening for installing a window glass in an automobile body, Figure 2 is an enlarged view of the part shown in the direction of the arrow in Figure 1, and Figure 3 is a diagram showing displacement, peeling, and cross-sectional collapse of conventional window glass sealing materials. A sectional view taken along the - line in FIG. 1, and the drawings from FIG. 4 to FIG. FIGS. 5a and 5b are cross-sectional views corresponding to FIG. 3, showing the press-compressed state of the sealant when each of the pads according to the gist of this invention is set. 1... Automobile body, 10... Window glass mounting opening, 100... Window glass mounting flange,
100a...Flange surface, 2...Window glass, 20
...Window glass surface, 3... Rubber foam elastic body (sealing material), 30... Inner peripheral side of sealing material, 4... Triangular padding, 4a... Bottom of triangular padding, 4b... Height side of the triangular cover, 5... Rectangular cover, 5a... One long side of the rectangular cover, 5b... One short side of the rectangular cover, 6... Adhesion Layer, 7...Mall.

Claims (1)

[Scope of utility model registration request] A butyl rubber-based adhesive layer is bonded to both surfaces between the flange surface of the window glass mounting flange provided in the window glass mounting opening of the automobile body and the window glass surface attached to this flange surface, and the block-shaped 4. Rubber foam elastic material that forms the
In the sealing of an automobile window glass, which is formed by setting and sealing the entire circumference of a substantially rectangular window glass formed at a corner with a curved corner, the central part of the window glass of the rubber-based foam elastic body is sealed. A thermosetting adhesive or an adhesive layer is provided on the surface that connects the inner circumference side portion of the window glass surface with the window glass surface area in the direction toward the center of the window glass from the position where the elastic body of the rubber foam is set on the window glass surface. A pad made of a rubber-based foamed elastic body is provided at least at a corner portion of the window glass, and an inner peripheral side portion of the rubber-based foamed elastic body at the corner portion is supported by the pad. Window glass sealing block.