JPH01226420A - Center seal rubber for automobile - Google Patents

Abstract

PURPOSE:To prevent the generation of noise and peeling of a paint film by a method wherein, in center seal rubber of a 4-door hard top type automobile, a fluororesin tape is laminated on the surface on the outside of a car of the upper end part of a mounting base part making contact with the glass guide of the opening edge of a car body. CONSTITUTION:Center seal rubber 2 is formed with a mounting base part 4 formed in an U-shape in cross section engaged with the front edge of a rear door glass 1 and a seal lip 5 formed in a hook-shape in cross section forced into pressure contact with the rear edge of a front glass 3, extended forward from the mounting base part 4, from the inner side of a car. A thin tape 8 of fluororesin, e.g., ethylene polytetrafluoride, is laminated on the surface on the outside of a car of the upper end part of the mounting base part 4. The fluororesin tape 8 is laminated in a manner to extend around the upper end surface of the center seal rubber 2. This constitution prevents the generation of noise occasioned by slide contact with a glass guide and peeling of a paint film due to slide contact.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a center seal rubber that seals between a front door glass and a rear door glass in a four-door hardtop automobile that does not have a center pillar.

Conventional Technology In a four-door hardtop automobile that is not equipped with a door sash or a center pillar between the front door glass and the rear door glass, a door sash is attached to the front edge of the rear door glass l, as shown in Figure 5. A center seal rubber 2 seals between the front door glass 3 and the rear edge of the front door glass 3.

As shown in FIGS. 6 and 7, the center seal rubber 2 includes a mounting base 4 having a substantially U-shaped cross section that fits onto the front edge of the rear door glass l, and a mounting base 4 that is attached to the front edge of the rear door glass l, and It is generally composed of a seal lip 5 extending forward and having a hook-shaped cross section.
is pressed against the rear edge of the front door glass 3 from inside the vehicle, thereby sealing between the two glasses 1.3.

Further, FIG. 8 shows a seal structure between the upper end of the center seal rubber 2 and the vehicle body opening. That is,
A hollow weather strip 6 is attached to the edge of the vehicle body opening, and the upper edges of the front door glass 3 and rear door glass l are pressed against this weather strip 6 to form a seal. In this case, the upper edge of the center seal rubber 2 is similarly pressed to form a seal. Glass guides 7 made of, for example, synthetic resin are disposed at appropriate locations on the edge of the opening of the vehicle body, and abut against the outer sides of the upper edges of the front door glass 3 and the rear door glass I.
Although the position of the upper edge is regulated to a normal position, the glass guide 7 is usually also provided at the position of the center seal rubber 2, and comes into contact with the upper end of the mounting base 4.

Therefore, when the rear door glass l is raised or lowered, the upper end of the mounting base 4 of the center seal rubber 2 comes into sliding contact with the glass guide 7. Therefore, in the conventional center seal rubber 2, the outer surface 4a of the upper end of the mounting base 4
(See Fig. 6) A surface treatment agent such as silicone was applied to the surface to prevent abnormal noises from occurring during lifting and lowering.

Problems to be Solved by the Invention However, when a surface treatment agent such as silicone is coated in this way, the film thickness tends to be uneven, and it is necessary to sufficiently prevent the generation of abnormal noise due to sliding contact with the glass guide 7. I can't. Further, when the rear door glass l is repeatedly raised and lowered, the coating film peels off due to contact with the glass guide 7, resulting in poor durability.

Means for Solving the Problems The present invention provides a center seal rubber that is attached to the front edge of a rear door glass and whose seal lip presses against the rear edge of the front door glass to seal the space between the two. The feature is that fluororesin tape is attached to the outer surface of the upper end of the mounting base that contacts the glass guide.

Function: Fluororesins represented by polytetrafluoroethylene are characterized by extremely low coefficients of friction. Therefore, by pasting this tape made of fluororesin, generation of abnormal noise due to sliding contact with the glass guide can be prevented. Also, unlike a coating film, it does not peel off.

Embodiment FIGS. 1 to 3 show an embodiment of a center seal rubber 2 according to the present invention.

As described above, the center seal rubber 2 includes a mounting base 4 having a substantially U-shaped cross section that fits onto the front edge of the rear door glass l, and a mounting base 4 that extends forward from the mounting base 4 to attach to the front edge of the front door glass 3. It is generally constituted by a seal lip 5 having a hook-shaped cross section and pressed against the rear end edge from inside the vehicle. A fluororesin tape 8 made of a thin tape-shaped fluororesin such as polytetrafluoroethylene is adhered to the outer surface of the upper end of the mounting base 4. This fluororesin tape 8 is generally attached to the area where the glass guide 7 mentioned above contacts, and in particular, as shown in FIG.
By wrapping the center seal rubber 2 up to the upper end surface, it is prevented from peeling off from the upper end. Incidentally, this fluororesin tape 8 may be attached after the center seal rubber 2 is molded using an adhesive, or the fluororesin tape 8 coated with adhesive may be set in a molding die. Alternatively, the center seal rubber 2 may be attached at the same time as the center seal rubber 2 is formed.

Therefore, according to the above structure, the glass guide 7 comes into sliding contact with the surface of the fluororesin tape 8, which has an extremely small coefficient of friction, so that abnormal noise caused by the raising and lowering of the rear door glass l is reliably prevented. In addition, the fluororesin tape 8 hardly wears out when it comes into contact with the glass guide 7, and has very little deterioration over time, so that the above-mentioned noise prevention effect can be maintained semi-permanently.

Further, in the embodiment shown in FIG. 4, the outer side surface of the upper end of the mounting base 4 to which the fluororesin tape 8 is attached is formed to have a bulge in an arcuate cross-sectional shape.

According to this embodiment, when the center seal rubber 2 moves up and down (in the direction of the arrow in the figure) together with the rear door glass l and comes into sliding contact with the glass guide 7, the glass guide 7 and the lower end 8a of the fluororesin tape 8 come into contact with each other. is prevented. Therefore, the fluororesin tape 8 is prevented from being turned over from the lower end 8a, and durability is improved.

Effects of the Invention As is clear from the above explanation, in the automobile center seal rubber according to the present invention, a fluororesin tape is attached to the outer surface of the vehicle at the upper end of the mounting base that comes into contact with the glass guide. Abnormal noises caused by sliding contact with the glass guide during elevation can be reliably prevented. Also,
It does not peel off like a coating film, and its effect can be maintained semi-permanently.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the upper end of the center seal rubber according to the present invention, FIG. 2 is a sectional view taken along the line ■-■,
Figure 3 is a cross-sectional view along the same < I[l-n1 line,
The figure is a cross-sectional view similar to Figure 3 showing an embodiment in which the cross-sectional shape of the tape attachment part is arc-shaped, Figure 5 is a perspective view of a four-door hardtop automobile, and Figure 6 is a conventional center seal. A perspective view showing the upper end of the rubber, FIG. 7 is a cross-sectional view taken along the line ■--■ in FIG. 6, and FIG. 8 is a cross-sectional view taken along the line ■--■ in FIG. 5. ! ...Rear door glass, 2...Center seal rubber, 3...Front door glass, 4...Mounting base,
8...Fluororesin tape. 8 ゛Huh? ! #Borrowed tape Figure 2. Figure 5 Figure 6

Claims (1)

[Claims] (1) In a center seal rubber that is attached to the front edge of the rear door glass and whose seal lip presses against the rear edge of the front door glass to seal the space between the two,
A center seal rubber for an automobile, characterized in that a fluororesin tape is attached to the outer surface of the vehicle at the upper end of the mounting base that comes into contact with the glass guide at the edge of the vehicle opening.