AUTOMOBILE HAVING DOOR SEAL STRUCTURES

Abstract: The fixing of a lip portion (21) of a door (10) is stabilized, and the chipping of a free end portion of a flange (12) of the door (10) is prevented. A door (10) is disposed so as to cover an outer side of a fender (2). A weather strip (14) is provided on the door (10), and a seal member (20) extending toward the fender (2) also on the door (10). The flange (12) integral with the door (10) is erected toward the fender (2). The seal member (20) comprises a door-fixing portion (22), a lip portion (21) and a covering portion (23), and this door fixing portion (22) is disposed so as to cover the flange (12). An arch cover (3) is detachably fixed to the portion of the fender (2) with which the lip portion (21) is engaged.

Description: Technical Field The present invention relates to a seal structure of doors mounted on a vehicle, and more specifically, to a vehicle characterized in a seal structure for application to an open/close door portion of a vehicle. Background of the Invention Conventional one-box type cars (cab over engine wagons, vans and so on) or vehicles having a wheel arch formed on the open/close portion of the door requires a seal for preventing the intrusion of water, dirt and the like. The art related to such seal structure is disclosed, for example, in: Japanese Utility-Model Publication No. 58-73087; Japanese Utility-Model Application No. 45271/1984 (Laid-Open No. 157425/1985) in the name of NISSAN MOTOR CO. Japanese Utility-Model Application No. 90524/1986 (Laid-Open No. 202422/1987) in the name of MITSUBISHI MOTORS CORP. 45271/1984 (Laid-Open No. 157425/1985) relates to a seal structure of a door of a vehicle, wherein two rubber seal members 5 and 6 are arranged along the lower end of the door D constituted of a door outer panel 3 and a door inner panel 4. When the door D is at a closed position, the seal members come into contact with the exterior of the outer panel 7 of the side sill 9, thereby airtightly closing the gap between the door D and the body B. According to the seal structure disclosed in 45271/1984 (Laid-Open No. 157425/1985), when the door is closed, the seal member mounted on the lower end of the door comes into contact directly with the body of the vehicle and it risks damaging the paint on the body. 90524/1986 (Laid-Open No. 202422/1987) relates to a weather strip mounted on the door of a vehicle so as to airtightly close the gap between the door and the body when the door is at a closed position, wherein the weather strip is mounted on the door 14 by clip 13, and the left side surface in FIG. 1 of 90524/1986 (Laid-Open No. 202422/1987) comes into contact with the body 20. Also the weather strip disclosed in reference 90524/1986 (Laid-Open No. 202422/1987) comes into contact directly with the body of the vehicle when the door is closed, with the same risk of damaging the paint on the body. 58-73087 discloses, as shown in FIG. 4, a seal structure of a door 32 in a vehicle where the lower end portion of the door 32 is positioned so as to cover the outer side of a fender 31 in a vehicle body 30. In the seal structure, a main weather strip 33 is mounted on an inner circumferential surface of the door 32, and a lower weather strip 34 is mounted on the lower end portion of the door 32 so as to contact the outer side of the fender 31, wherein a protector 35 for covering the lower end of the door 32 is formed integrally thereto. However, it was difficult by the known art disclosed in the above publication to form a lip 34a covering the lower end portion of the door 32 to show a good and definite appearance. The reason for such unattractive appearance was caused by an uneven gap formed between the tip of the lip 34a and an outer panel 32a when mounting the lip 34a. Such problems could be prevented by bonding the tip, but this caused another problem of raising the manufacturing cost due to increased manufacturing steps. Summary of the Invention The present invention is aimed at solving the above problems, by providing a vehicle having a stable appearance of the lip portion on the door, with a structure for preventing a chipping of the flange tip portion mounted on the door side. In order to solve the above problems; The vehicle of the present invention comprises a door mounted so as to cover the outer side of a fender, the door comprising a weather strip, and a seal member mounted facing the fender side, wherein a flange portion formed integrally to the door is extended toward the fender, said seal member comprises a lip portion and a door fixing portion having a connecting groove, and said flange portion is connected to said connecting groove so as to be covered by said door fixing portion. Further, the vehicle of the present invention comprises a structure where an arch cover is removably mounted to the portion of the fender with which the lip portion is contacted when the door is closed. The vehicle of the present invention further comprises a structure where a cover portion covering the door fixing portion is formed to the seal member. Brief Description of the Drawings FIG. 1 is a cross-sectional view showing the outline of the door seal structure according to an embodiment of the present invention; FIG. 2 is a partial side view of the same embodiment; FIG. 3 is a cross-sectional view showing the seal member 20 of the same embodiment; and FIG. 4 is a cross-sectional view showing the door seal structure of the prior art. Preferred Embodiment of the Present Invention The embodiment of the present invention will be explained hereinafter with reference to the accompanied drawings. (Whole Structure) FIGS. 1 and 2 show a portion of a vehicle according to the embodiment of the present invention. A cab over engine-type light van is used in the embodiment as an example of the vehicle. A door 10 positioned on the rear direction of a body 1 is formed so as to cover the outer side of a fender 2 positioned on the lower area of an opening in the body 1. Actually, as shown in FIGS. 1 and 2, the lower end portion of an outside panel 11 forming the door body of the door 10 is protruded, and along the edge of said outside panel, a flange portion 12 is formed integrally thereto. More specifically, a weather strip 14 is mounted to the whole circumference of the inner side surface of an inside panel 13 of the door 10, and the weather strip 14 prevents rain water and the like from intruding the interior of the vehicle. Further, the tip portion of a clip (not shown) buried inside the weather strip 14 is fixed to said inside panel 13. The mounting could also be carried out by a bonding means instead of the clip. On the other hand, on an arch-like end rim of the outside panel 11 which is positioned on the outer side of the door 10 than the mounting position of the weather strip 14, the tip of the outside panel 11 is bent in a right angle, forming a flange portion 12 integrally to the panel so as to have a fixed height. A seal member 20 having a lip portion 21 integrally formed thereto so as to contact an end portion 2a of the fender 2 is mounted to the flange portion 12. When the door 10 is shut, the lip portion 21 of the seal member prevents muddy water from sticking to the outer side of the fender 2 by closing the gap between the peripheral portion of the door 10 and the fender 2 (refer to FIG. 1 (B)). (Structure of the Seal Member 20) The seal member 20 is for mounting to the flange portion 12 formed by bending the rim of the outside panel 11 forming the door 10. The structure of the seal member 20 will now be explained in detail. The seal member 20 comprises a door fixing portion 22, a lip portion 21 and a cover portion 23 as shown in FIG. 3, wherein the door fixing portion 22 is formed of a hard synthetic resin comprising a mounting portion 22a to the flange portion 12 and a mounting portion 22b to the inside panel 13. The mounting portion 22a to the flange portion 12 is formed of a connecting groove 22c for covering the flange portion 12 and a protrusion 22d. The protrusion 22d is inserted to a mounting hole (not shown) formed to the flange portion 12 and connected thereto. As was explained, the seal member 20 works as a protector covering the flange portion 12. On the mounting portion 22b of the seal member 20 is formed a mounting hole 22e for mounting the member to the inside panel 13 by a clip 15, and the clip 15 is inserted through the mounting hole 22e for mounting to the inside panel 13. In other words, the seal member 20 is securely mounted to the door 10 by connecting the flange portion 12 to the connecting groove 22c, and fixing the mounting portion 22b by the clip 15 to the side panel 13 of the door. The lip portion 21 of the seal member 20 is formed in a curved shape by a synthetic resin thin plate having a relatively high flexibility, and the both ends thereof are fixed to the door fixing portion 22 being separated by a predetermined distance. The space formed between the door fixing portion 22 and the lip portion 21 could either be communicated with outer air or sealed to form an airtight space. In either case, when the door 10 is shut and contacted to the lower portion of the fender 2 side, it is flexibly deformed as shown in FIG. 1 (B). The cover portion 23 of the seal member 20 is a member for hiding the peripheral area of the clip 15 mounted to the mounting portion 22b, which provides a good appearance by being curved in an arc shape. As an example other than the present embodiment of the means to fix the seal member 20, a cored bar could be mounted thereto, or the tip of the mounting portion of the seal member 20 could be formed thinner to be fixed by a double coated adhesive tape (not shown). The present embodiment not only provides a good appearance, since the lower surface of the mounting portion 22a in the seal member for covering the flange portion 12 is not deformed, but also provides a good sealing property, since the flange portion 12 is formed so as not to contact the side of the body. On the other hand, in the position where the lip portion 21 of the seal member 20 contacts the fender 2 side along the lower end, an arch cover 3 having an L-shaped cross-section is mounted integrally to the fender 2 by a mounting device 4 of a screw and the like enabling removal therefrom. Further, it could be formed so that the mounting position thereof may be changed according to need. According to the above embodiment, the flange portion 12 of the door 10 is covered by the door fixing portion 22 of the seal member 20, thereby hiding the lip portion 21 when the door is closed. This provides an advantageous appearance. Further, since the connecting groove 22c and the protrusion 22d is formed on the seal member 20, the mounting operation could be simplified, thereby contributing to the reduction of manufacturing cost. Moreover, since the separately formed arch cover 3 is removably mounted to the fender 2 in the body side where the lip portion 21 of the door 10 is contacted, replacement of the arch cover is enabled. Further, the door fixing portion 22 is formed of a hard synthetic resin, and the lip portion 21 is formed of a flexible synthetic resin. This enables to minimize the deformation of the seal member 20, which leads to maintaining the advantageous appearance for a long time. Even further, according to the present embodiment, the appearance disorder caused by the accuracy of unit members on the door or assembly dispersion could be prevented, and the assembling could be performed stably, which enables to secure the performance to resist chipping. Moreover, by forming the tip of the lip portion 21 of the seal member 20 thinner, the seal portion of the vehicle would not stand out, thereby enabling a good appearance. Industrial Applicability The present invention having the above structure is effective in the following points. 1. According to the invention of claim 1, the appearance of the lip portion on the door is stabilized, and the chipping of the flange tip portion could be prevented. 2. According to the invention of claim 2, in addition to the effects of claim 1, since the arch cover is removably mounted to the contact portion of the lip portion, the adjustment of the gap between the lip portion, or the replacement of the arch cover when broken may easily be performed. 3. According to the invention of claim 3, in addition to the effects of claims 1 and 2, since the cover portion for covering the door fixing portion is formed to the seal member, the door appearance when the door is opened could be improved.

Claims: A seal structure of a door (10) of a vehicle, comprising a door (10) equipped with a weather strip (14) and a seal member (20) mounted toward the side of a fender (2), said door (10) being mounted so as to cover the outer side of said fender (2), said door including a flange portion (12) formed to have its tip extending toward the side of said fender (2), said seal member (20) comprising a door fixing portion (22) having a connecting groove (22c) for mounting on said door and a lip portion (21) that comes into contact with said fender (2) when the door is in a closed position, said seal member (20) being mounted on the door by fitting said connection groove (22c) of the door fixing portion (22) to said flange portion (12) of the door (10), characterized in that it comprises an arch cover (3) detachably mounted on the portion (2a) of said fender (2) with which said lip portion (21) comes into contact when the door (10) is in a closed position. A seal structure of a door (10) of a vehicle according to claim 1, wherein a cover portion (23) for covering a mounting portion (22b) of said seal member (20) is formed on said seal member (20).

Inventors: AOKI TOSHIO, OHTSU SEIICHI, AOKI, TOSHIO, OHTSU, SEIICHI, AOKI, Toshio, Isuzu Motors Ltd. Fujisawa Factory, OHTSU, Seiichi, Isuzu Motors Ltd. Fujisawa Factory
Applicants: ISUZU MOTORS LTD, ISUZU MOTORS LIMITED
Application year: 1997
Main classification: B60J5
IPC codes: B60R13, B60J10