JP2011046306A - Weather strip of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water from infiltrating in a cabin without increasing cost, in a weather strip for an automobile, which includes a base fitted to a vehicle body and a seal integrally connected to the base and contacted with the inner side surface of a door for ensuring the sealing property in the cabin, in which the end surfaces in the longitudinal direction is merely touched to each other without being integrally connected. <P>SOLUTION: A finny projection 19 is integrated with a seal 11 at one end 17 of a weather strip 4. The projection 19 is connected to the surface of the seal 11 at the other end 18 of the weather strip 4 by an adhesive 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes an automobile having a base portion fitted and fixed over the entire length of a body flange extending along a door opening, and a seal portion integrally connected to the base portion and formed hollow. On weather strips.

  A weather strip disposed along a door opening formed on the side of the vehicle body or the rear of the vehicle body is well known (see, for example, Patent Document 1). FIG. 1 and FIG. 2 are rear views showing the rear part of an automobile equipped with such a weather strip. A door opening is formed in the rear part of the vehicle body 1 shown here, and a back door 2, which is an example of a door, is disposed in the door opening as shown in FIG. The back door 2 is supported by the vehicle body 1 via a hinge (not shown) so as to be capable of pivoting between the closed position shown in FIG. 1 and the open position shown in FIG.

  As shown in FIG. 2, a body flange 3 constituted by a part of the vehicle body 1 extends along the door opening, and one weather strip 4 is attached to the body flange 3. FIG. 7 is an enlarged cross-sectional view taken along the line AA of FIG. 1 showing an example of a conventional weather strip, and FIG. 8 is a view of the weather strip 4 shown in FIG. It is. As shown in FIG. 7, the mating flange portion of the lower back panel 5 and the lower back reinforcement 6 constituting the vehicle body 1 is fixed by spot welding, and the body flange 3 is formed by this mating flange portion. Thus, the body flange 3 constituted by a part of the vehicle body 1 extends over the entire circumference along the door opening. 1, 2, and 7, reference numeral 7 indicates a bumper cover, and reference numeral R in FIG. 7 indicates a vehicle interior. Moreover, the arrow W in FIG.1, FIG2 and FIG.8 has shown the vehicle width direction, and the arrow Fr in FIG. 7 has shown the advancing direction of the motor vehicle.

  As shown in FIG. 8, one end surface 8 and the other end surface 9 in the longitudinal direction of the weather strip 4 are merely abutted against each other without being integrally joined. FIG. 7 is a cross-sectional view taken along the abutting portion between the both end faces 8 and 9.

  As shown in FIG. 7, the weather strip 4 includes a base portion 10 having a substantially U-shaped cross-sectional shape, and a seal portion 11 that is integrally connected to the base portion 10 and has a hollow interior. The base portion 10 is fitted and fixed over the entire length of the body flange 3 extending along the door opening. A lip portion 12 is integrally connected to the base portion 10. The base portion 10 and the lip portion 12 are made of an elastic material such as rubber, and a large number of sheet metal inserts 13 arranged in the longitudinal direction of the weather strip 4 are embedded in the base portion 10.

  The seal portion 11 is also made of an elastic material such as rubber. The seal portion 11 is pressed by the door 2 with the back door 2 closed as shown in FIGS. 1 and 7. It is elastically deformed and press-contacts with the inner side surface of the door 2 to ensure the sealing performance of the vehicle interior R. The seal portion 11 has a vehicle outer side portion 15 facing the vehicle outer side and a vehicle inner side portion 16 facing the vehicle inner side with the top portion 14 as a boundary.

  The conventional weather strip 4 shown in FIGS. 7 and 8 is exaggerated in FIG. 8 because the end faces 8 and 9 thereof are not joined together by an adhesive or the like but are merely abutted against each other. As shown, one end face 8 and the other end face 9 of the weather strip 4 are slightly separated from each other at the top portion 14, and a gap G is formed there. Since the base part 10 has a sheet metal insert 13 embedded therein, the base part 10 has a relatively large rigidity, but the top part 14 of the seal part 11 that is far away from the highly rigid base part 10. In FIG. 1, one end face 8 and the other end face 9 are easily opened from each other. Further, it is normal that the elastic material constituting the seal portion 11 is softer than the elastic material constituting the base portion 10, but especially when the weather strip 4 is constituted in this way, The end faces 8 and 9 of the soft seal portion 11 may be greatly opened.

  As described above, since the end faces 8 and 9 of the seal portion 11 are open, as shown by the arrow X in FIG. As shown in FIG. 7 with reference numeral WA, water may accumulate on the weather strip.

  In order to prevent the above-described problems, a weather strip is also known in which the end faces 8 and 9 of the weather strip 4 are joined together with an adhesive, or the end faces 8 and 9 are melted by heat to weld both end faces. It is. However, in order to join the both end faces of the weather strip in this way, it is necessary to correctly position the weather strip with a jig, which is very complicated. In addition, a large amount of adhesive is required to bond both end surfaces over the entire surface. For this reason, the cost of weatherstrip increases.

JP 2009-78572 A

  An object of the present invention is to provide a weather strip for an automobile that can suppress an increase in cost and can prevent water from entering the passenger compartment.

  The present invention has a base part fitted and fixed over the entire length of a body flange extending along the door opening, and a seal part integrally connected to the base part and formed hollow. The seal portion is configured to be pressed against the inner side surface of the door while being elastically deformed by being pressed by the door in a state in which the door is closed, and to ensure the sealing performance in the vehicle interior, and the seal portion In a weather strip of an automobile having an exterior side facing the vehicle exterior and an interior side facing the interior of the vehicle, the end surfaces in the longitudinal direction of the weather strip are joined together. The end of the weatherstrip is formed with a fin-like protrusion integrally connected to the outer side of the seal part, and the protrusion has a weatherstrip. The other end of It is joined to the exterior part surface of the definitive sealing portion with an adhesive propose automobile weather strip according to claim.

  Further, in the weather strip, the base portion includes an outer side portion facing toward the outer side of the vehicle and an inner side portion facing toward the inner side of the vehicle, and the fin is formed on one end portion of the weather strip and the protruding portion. It is advantageous if the extension in the form of a piece is connected in one piece and is simply in contact with the outside surface of the base part at the other end of the weatherstrip without being joined together.

  According to the present invention, the fin-like protrusion integrally connected to one end of the weather strip is joined to the surface of the outer side of the seal portion at the other end of the weather strip by the adhesive. , There is no big gap between the two end faces of the weatherstrip. Therefore, even when high-pressure water is applied from outside the vehicle, the water can be prevented from entering the vehicle interior. In addition, since both end faces of the weather strip are not joined together but are merely abutted, a complicated operation of joining these end faces is unnecessary. Further, since the fin-like protrusion is bonded only to the outer surface of the seal portion at the other end of the weather strip, it is bonded as compared with the case where both ends of the weather strip are bonded over the entire surface. The amount of agent used is small. In this way, the weatherstrip manufacturing cost can be reduced.

It is a rear view when the automobile with the back door closed is viewed from the rear, and is a diagram for explaining a conventional configuration and a configuration according to the present invention. FIG. 2 is a rear view of an automobile when a back door is opened, and is a diagram provided for explaining a configuration of a conventional weather strip and a configuration of a weather strip according to the present invention, and is a diagram showing a simplified weather strip. . It is the AA line expanded sectional view of FIG. 1 which shows the weather strip which concerns on this invention. It is the figure which looked at the weather strip shown in FIG. 3 in the arrow B direction. It is sectional drawing similar to FIG. 3 which shows the other example of a weather strip. It is the figure which looked at the weather strip shown in FIG. 5 in the arrow B direction. It is an AA line expanded sectional view of Drawing 1 showing the conventional weather strip. It is the figure which looked at the weather strip shown in FIG. 7 in the arrow B direction.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  The basic configuration of the weather strip 4 shown in FIGS. 3 and 4, the configuration of the vehicle body 1 to which the weather strip 4 is attached, and the back door 2 that is an example of a door that is supported by the vehicle body 1 so as to be capable of opening and closing. This configuration is the same as the conventional configuration shown in FIG. 1, FIG. 2 and FIG. That is, as shown in FIGS. 1 to 3, the weather strip 4 of this example is also fixed to the body flange 3 extending along the door opening formed at the rear portion of the vehicle body 1 and fixed over the entire length thereof. 10 and a seal portion 11 that is integrally connected to the base portion 10 and that is hollow inside. The seal portion 11 is pressurized by the door 2 with the back door 2 closed. Thus, it is configured so as to ensure the sealing performance of the vehicle interior R by being pressed against the inner side surface of the door 2 while being elastically deformed. Further, the seal portion 11 has a vehicle outer side portion 15 facing the vehicle outer side and a vehicle inner side portion 16 facing the vehicle inner side with the top portion 14 as a boundary. The back door 2, which is an example of a door, is supported by the vehicle body 1 so as to be capable of pivoting between the closed position shown in FIG. 1 and the open position shown in FIG. A weather strip 4 extends along the door opening, and a base portion 10 of the weather strip 4 is embedded with a large number of inserts 13 made of sheet metal arranged in the longitudinal direction of the weather strip 4. The elastic material constituting the base material 10 is softer than the elastic material constituting the base portion 10 as before. Furthermore, the end faces 8 and 9 in the longitudinal direction of the weather strip 4 shown in FIG. 4 are simply abutted without being integrally joined, and the lip portion 12 is integrally connected to the base portion 10. The weather strip is no different. The base part 10, the lip part 12, and the seal part 11 are integrally formed by, for example, extrusion molding, and the insert 13 is embedded in the base part 10 at the time of the molding. 3 and FIG. 4 are denoted by the same reference numerals as those shown in FIG. 7 and FIG. 3 indicates the forward direction of the automobile, and the arrow W in FIG. 4 indicates the vehicle width direction (the same applies to FIGS. 5 and 6).

  The weather strip 4 of this example is different from the conventional weather strip in the following points.

  A weather strip portion near one end face 8 of the weather strip 4 shown in FIG. 4 is referred to as one end portion 17, and a weather strip portion near the other end face 9 is referred to as the other end portion 18. At one end portion 17 of the weather strip 4, a fin-like protrusion portion 19 is integrally connected to the vehicle outer side portion 15 of the seal portion 11. As shown in FIG. 3, the protruding portion 19 is bonded to the surface of the outer side portion 15 of the seal portion 11 at the other end portion 18 of the weather strip 4 via an adhesive 20. The projecting portion 19 is formed of a piece formed at the same time as the weather strip 4 is formed. Therefore, the projecting portion 19 is made of the same material as the seal portion 11 of the weather strip 14.

  As described above, the fin-like protruding portion 19 integrally connected to one end portion 17 of the weather strip 4 has an adhesive 20 on the outer surface of the seal portion 11 at the other end portion 18 of the weather strip 4. As shown in FIG. 4, there is no gap between both end faces 8 and 9 of the weather strip 4. Therefore, as shown by the arrow X in FIG. 3, water does not enter the vehicle interior R even when high-pressure water is applied from the outside of the vehicle. In addition, since both end faces 8 and 9 of the weather strip 4 are not joined together but are merely abutted, a complicated operation of joining these end faces 8 and 9 is not necessary. When the protrusion 19 is joined to the other end 18, the joining operation can be easily performed simply by manual operation.

  Further, since the fin-like protrusion 19 is adhered only to the vehicle outer side surface of the seal portion 11 at the other end 18 of the weather strip 4, both end faces 8, 9 of the weather strip are adhered over the entire surface. Less amount of adhesive is used than in the case. In this way, the weatherstrip manufacturing cost can be reduced.

  Usually, car dealers have weather strips for each vehicle type as spare parts. When a user's car weather strip deteriorates, the new weather strip is prepared. It can be exchanged for a weatherstrip. At that time, in the case of a conventional weather strip in which both end surfaces are integrally joined by an adhesive or welding, it is necessary to prepare many kinds of weather strips having different lengths for each vehicle type. On the other hand, since the weather strip 4 of this example has the end faces 8 and 9 not joined together, the same length is cut slightly longer so that it can be used as a weather strip of any vehicle type. When the weather strip is attached to the vehicle body, the weather strip is slightly cut to a length suitable for the automobile according to the type of the automobile, and then the projection 19 Can be adhered to the other end 18 with an adhesive 20 and such a weatherstrip can be attached along the door opening of the vehicle. Thus, since it is only necessary to prepare weather strips of the same length at the store, the cost can be reduced as compared to preparing various types of weather strips having different lengths.

  By the way, as shown in FIG. 3, the base portion 10 also has a vehicle outer side portion 21 facing the vehicle outer side and a vehicle inner side portion 22 facing the vehicle inner side, and the vehicle outer side portion 21 and the vehicle inner side portion 22 are They are integrated via the intermediate part 23. In the weather strip 4 shown in FIGS. 5 and 6, a fin-like extension 24 is integrally connected to one end 17 and the protrusion 19 of the weather strip 4, and the extension 24 is The other end portion 18 of the weather strip 4 is simply in contact with the surface of the vehicle outer side portion 21 of the base portion 10 without being integrally joined. Other configurations of the weather strip 4 shown in FIGS. 5 and 6 are the same as those of the weather strip shown in FIGS. 3 and 4.

  In the weather strip shown in FIGS. 5 and 6, the extension portion 24 integrally connected to the protrusion portion 19 covers the vehicle outer side portion 21 in the base portion 10 of the other end portion 18. When high-pressure water is applied from the outside of the vehicle as indicated by an arrow X, the water can be more reliably prevented from entering the vehicle interior R. In addition, since the extension 24 is not integrally joined to the vehicle outer portion 21 of the other end 18, the amount of adhesive used is not increased, and the cost of the weather strip 4 is greatly increased. There is no.

  The weather strip 4 provided at the periphery of the door opening in which the back door 2 is disposed has been described above. However, each of the above-described configurations includes other door openings, for example, door openings for side doors formed on the side of the vehicle body. The present invention can also be applied to a weather strip attached along the periphery.

2 Door 3 Body flange 4 Weather strip 8, 9 End face 10 Base part 11 Seal part 14 Top part 15, 21 Car outer part 16, 22 Car inner part 17 One end 18 The other end 19 Projection 20 Adhesive 24 Extension Part

Claims (2)

  A base portion that is fitted and fixed over the entire length of a body flange extending along the door opening; and a seal portion that is integrally connected to the base portion and that is hollow inside. Is configured so as to ensure a sealing property in the vehicle interior by being pressed against the vehicle inner side surface of the door while being elastically deformed by being pressurized by the door in a closed state, and the seal portion is a top portion thereof. In a weather strip of an automobile having a vehicle outer side facing the vehicle outer side and a vehicle inner side facing the vehicle inner side, the end surfaces in the longitudinal direction of the weather strip are simply joined without being joined together. The one end of the weather strip is formed with a fin-like protrusion integrally connected to the outer side of the seal portion, and the protrusion is formed at the other end of the weather strip. In the club Automotive weather strip, characterized in that the exterior part surface of the pole tip are joined via an adhesive.   The base portion has a vehicle outer side portion facing toward the vehicle outer side and a vehicle inner side portion facing toward the vehicle inner side, and a fin-like extension portion is integrally formed with one end portion of the weather strip and the protruding portion. The automobile weather strip according to claim 1, wherein the extension portion is connected to the outer side surface of the base portion at the other end of the weather strip without being integrally joined thereto.

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