JPS63101128A - Center seal structure - Google Patents

Abstract

PURPOSE:To prevent car washing water from infiltrating by inserting a seal having a lip section to be brought into close contact with a front window between a front side window and a rear side window and making the elastic modulus of part of the support section of this seal lower than that of the lip section. CONSTITUTION:A center seal 6 is inserted between both front and rear side windows 4, 5. A lip section 9 is extended from the support section 7 of this center seal 6 via a flexed section 8. When the front side window 4 is pressed to the lip section 9, stress is generated on the support section 7. In this case, part of the support section 7 is molded with a raw material having the elastic modulus lower than that of the lip section 9, thus the deflection deformation angle at the flexed section 8 of the lip section 9 is not changed largely. As a result, the tip of the lip section 9 is not removed from the surface of the window 4, and car washing water can be reliably prevented from infiltrating.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the structure of a center seal in which an IC is located between the front side window and the rear side window of a door-less vehicle.

Conventional technology As a conventional center seal, W! The structure shown in Figures c7 and 8 has been proposed (Japanese Patent Laid-Open No. 58-1564).
(Refer to Publication No. 15), that is, the satschelless door type vehicle 1 has a front side window 4 and a rear side window 5 that are fitted into the respective openings of a front door 2 and a rear door 3 so as to be able to be raised and lowered. A center seal 6 is interposed between both side windows 4.5. The ff center seal 6 is fixed to the rear side window 51C and includes a support portion 7 molded from hard resin, and a lip portion 9 molded from soft resin that is adhered to the support portion 7 via a bent portion 8. The contact surface between the lip portion 9 and the support portion 7 is formed obliquely. In such a structure, when the front door 2 is closed, the lip portion 9 comes into pressure contact with the inside of the ILN at the rear end of the front side window 4,
Front side window 4 and rear side window 5
The space between them is sealed.

Problems to be Solved by the Invention However, in such a conventional structure, the lip f
! Since the ls9 is molded from soft resin, the front side window 4 has a lip when the front door 2 is closed.
When pressed against 9, the support part 7 made of hard IRF1'#
Not to be confused, only the lip portion 9 is deformed by bending from the angle U before pressure contact shown by the head weight to the angle σ8 after pressure contact shown by the solid line. At this time, a seal is formed due to the area 8vc where the front side window 4 and the lip portion 9 come into pressure contact, but since the lip portion 9 is deformed so as to rotate around the bend s8, the above-mentioned angle is 01, the region 8 is located on the tip 9a side of the lip portion 9 as shown by the chain line, but when the angle changes to θ, the region S is displaced toward the bent portion. Therefore, as a result of the region S being displaced closer to the bent portion 8, the distance c or less from the tip 9a of the lip portion 9 to the center of the region (this distance is referred to as sealing point distance Ls) becomes longer, and the tip 9a is spaced apart from the front side window 4 and 1. That destination! A gap is created between the front side window 9a and the front side window 4.For this reason, when washing the car, etc., if the pressurized car wash water W enters through the valve between the rear end of the front side window 4 and the center seal 6. , above 1) 119
A is pressed by water pressure n, and the car wash water W is 1rJ during the above period.
There was a possibility that the iD might further infiltrate into room R while being pushed out.

Means for Solving the Problems The present invention has been made in view of the above-mentioned problems, and includes a support portion fixed to the rear side window of the front side window of the door type room. and a lip portion that is in close contact with the inner surface of the front window j14, and the elastic modulus of at least a portion of the support portion is lower than that of the lip portion.

Effect In the above configuration, when the front side window is pressed against the lip portion, the lip portion is pulled, and stress is generated in the support portion due to the press contact of the front window. At this time, since at least -g of the support portion has a lower elastic modulus than the lip portion, it is deflected more greatly than the lip portion due to the stress. Therefore, the bending deformation angle at the bending part of the lip part does not change greatly, and the phenomenon that the tip of the lip part separates from the inner surface of the front side window due to the bending deformation angle of the lip part does not occur. be suppressed.

EXAMPLE A first example of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 7, the satsuru door type vehicle 1 has a front side window 4 and a rear side window 5 that are fitted into the respective openings of a front door 2 and a rear door 3 so as to be able to rise and fall. A center seal 6 shown in FIGS. 1 and 2 is interposed between the rear side windows 4.5. The center seal 6 is composed of a support g57 and a lip portion 9 embedded in the support portion 7 with a bent portion 8.
is the mounting base 10 attached to the end face of the rear side window 5 and the mounting base $10! It consists of a low part 11 which is formed at the inner end of the curve and which produces a low pressure approximately in the water direction. In this embodiment, as shown in the table below as 1 to 3 of the first embodiment, the lip portion 9 has a JrE rubber hardness of 70.80.8.
The support part 7 has a hardness of 45.45, which has a lower elastic modulus than the lip part 9 over its entirety.
．． It is molded from 60 pieces of material.

In this embodiment having the above-described configuration, when the front door 2 is closed, the front side window 4 comes into pressure contact with the lip s9 as shown by the solid line in Figure 2, and the lip portion 9 is valved to connect the support portion 7 with the front side window 4. Stress is generated due to the pressure contact of the front window 4. At this time, since the elastic modulus of the support portion 7 is lower than that of the lip portion 9, the support portion 7 is deflected and deformed to a greater extent than the lip portion 9 due to the stress.

Therefore, the deformation angle θ of the lip portion 9 at the bent portion 8 after the front side window 4 is pressed does not change significantly compared to the deformation angle θ1 of the front side window 4 (indicated by the chain line). The angle θ1 and the zero fold are approximate, and the lip portion 9 forms a region S at its tip 9a that is in pressure contact with the front window 4 directly inside the vehicle interior. For this reason, as shown in the table above as measured values, in Conventional Example 1.2, in which both the support part 7 and the lip part 9 were molded from materials with the same modulus of elasticity, and conversely, the injection rate of the lip part 90 was lowered. Conventional example 3
Seal points 1fi11 as shown in (@Figure 8)! Ls is 3,5
,15. There is no possibility that the value becomes as large as λ8wk, and each seal point distance of 1 to 3 in the first embodiment ￥a L
s is 0,5. (1, 3, 0, 81B, and the phenomenon in which the tip 9a of the lip portion 9 separates from the front side window 4 is suppressed. Therefore, when washing the car, etc., there is a blade between the rear 11111g of the front side window 4 and the center seal 6. Even if the car wash water W with the mouth pressure enters, the tip 9a of the lip portion 9 will not be separated from the front side window 4, unlike in conventional examples 1 to 3 where the sealing point distance is large. As is clear from the shower test, by separating the first gs9acr), it is possible to eliminate the water surface leakage into the breath fiR that occurs in Conventional Examples 1 to 3. As shown in the table above, by reducing the elastic modulus of the support portion 70, the reaction force of the center seal 60 is reduced, and as a result, the reaction force when the front door 2 is closed is lower than that of conventional examples 2 and 3. It has been found that door closing performance also improves.

Also, the lip part 9 has a Jr8 rubber hardness of 65 to 90. Support part 7
It has become clear that it is desirable for the angle to be 40 to 5 degrees ao, and that it is desirable for the sealing performance to have a difference in elastic modulus of at least twice between the lip portion 9 and the support s7.

Figure 3 shows a second SA embodiment of the present invention, in which the support part 7 is formed of a material with a low elastic modulus over a part of the mounting base 10 and the extension part 11, and the lip part 9 and The remaining portion of the extension s11 is made of a material with a high elastic modulus. In this embodiment as well, since the portion from the bent portion 9 to the extended portion 11 is formed of a material with a high elastic modulus, the amount of deformation angle from the lip portion 90d1 to the lip portion 90d2 can be reduced as described above. , the seal point distance can be as small as 11La.

Figure wE4 shows a third embodiment of the present invention, in which only the substantially central portion of the extending portion 11 is molded from a material with a low elastic modulus. In this embodiment, not only can the angle of deformation of the lip portion 9 from σ to σ8 be reduced to reduce the sealing point distance WaLs as in the second embodiment, but also the mounting base W510 is made of a hard material. Since it is a molded tongue, the adhesion performance to the rear side window 5 can also be improved.

Figure 5.6 shows a fourth embodiment of the invention,
The elastic modulus is lowered by the structure of the support portion 7, regardless of the properties of the molding material.

That is, the outer side of the jI chamber of the lower part 11 has a groove 1 having a substantially circular cross section.
2 are formed, and the opening edge of the extraction groove 12 has opposing protrusions 3. It is molded.

In this configuration, when the front side window 4 comes into pressure contact with the lip s9, the extending portion 11 bends and deforms while widening the groove 12. Therefore, the deflection deformation angle U1 of the lip portion 9 after the 7et side window 4 is pressed does not change drastically compared to the deformation angle θyo before the contact, and the elasticity of the support @7 is As in each of the above-mentioned embodiments in which the rate is lowered, the sealing ratio i11Ls can be reduced. In addition, since the projections 13 and 13 are in contact with each other, the lip portion 9 and the extension 11 are prevented from falling out of the vehicle mounting R (as shown by the arrow A in the GS diagram).
When the front side window 4 is raised from the open state to the closed state, the front side window 4 is moved by tf[sll!] due to the side rt, ic. It can also prevent so-called entrainment, which occurs when sliding along the inside of the chamber R and causing temperature drop.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention provides a center seal consisting of a support portion fixed to a rear side window and a lip portion that is in close contact with the xH inner surface of the front window. It was made to be lower than lip i. Therefore, the stress generated when the lip portion comes into pressure contact with the front window bends and deforms the support portion, which has a low elastic modulus, and the bending deformation angle of the lip portion is minimized. Therefore, the phenomenon in which the tip of the lip part separates from the interior surface of the front side window, which occurs depending on the angle of deflection of the lip part, is suppressed. Therefore, pressurized water during car washing etc. sprays onto the tip of the lip part. , it is possible to reliably prevent the disadvantage of infiltration into the vehicle interior from between the lip portion and the front side window.

[Brief explanation of the drawing]

Fig. 1 is a sectional view corresponding to the line 7 - - 7 in Fig. 7 showing the 8g1 embodiment of the present invention, Fig. 2 is an explanatory diagram showing the operation of the same embodiment, and Fig. ″47 showing 2 examples
The sectional view corresponding to the line ■-■ in the figure, the fourth factor is the third factor of the present invention.
Figure 5 is a sectional view corresponding to class ■-■ in Figure 7 showing the fourth embodiment of the present invention, Figure 6 is a sectional view corresponding to class ■-■ in Figure 7 showing the fourth embodiment of the present invention FIG. 7 is a side view of a sash-less door type vehicle, and FIG. 8 is a sectional view taken along the line ■-■ in FIG. 7, showing a conventional center seal. 1... Satschelless door type car, 4... Front side window, 5... Rear side window, 7...
- Support part, 8...Bending part, 9...Lip part. Figure 1 2nd cause

Claims (1)

[Claims] (1) A center seal is interposed between the front side window and the rear side window of a sashless door type vehicle, and includes a support part fixed to the rear side window and a lip part that presses against the interior surface of the front window. A center seal structure characterized in that the modulus of elasticity of at least a portion of the support portion is lower than that of the lip portion.