JP2011031823A - Door parting seal of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve sealability and durability, by bringing a seal lip into pressure contact with a mating side member by specific bearing pressure even in any part, while securing a continuity of a seal line, when the seal line of the seal lip straddles in front and in rear of a hinge center. <P>SOLUTION: In a general part 4A on the front side more than the hinge center, a first seal lip 9a curved so that the vehicle outside becomes a projecting shape, is brought into pressure contact with a mating side seal surface 10 toward the vehicle outside when closing a door. In a reversal part on the rear side more than the hinge center, a second seal lip is brought into pressure contact with the mating side seal surface toward the vehicle inside by pulling in the second seal lip to the vehicle inside ahead of its root part when closing the door. In a part near to the reversal part among the general part 4A, a cross-sectional shape of the first seal lip 9a gradually changes toward the reversal part side from the general part 4A side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a door parting seal for an automobile. For example, in order to improve sound insulation at a parting portion formed between a front end of a front door and a front fender and suppress wind noise, the front end of the front door It is related with the door parting seal arrange | positioned along.

  As this type of door parting seal, for example, those described in Patent Documents 1 and 2 are known. Conventional door parting seals as typified by those described in Patent Documents 1 and 2 are usually below a so-called door waist line (belt line) and, for example, in the case of a front door Is disposed in front of the hinge center of the door hinge.

  Therefore, for example, in the case of a front door, if a door parting seal is attached to the inner surface of the front end of the door, the door parting seal is located behind the parting unit in conjunction with the door opening operation when the door is opened. When the door is closed, the door parting seal moves from the vehicle inner side toward the vehicle outer side and presses against the parting portion when the door is closed. Thereby, without disturbing the door opening / closing operation, the parting portion can be closed when the door is closed, thereby contributing to further improvement in sound insulation and suppression of wind noise and the like.

JP 2002-59746 A JP 2006-327414 A

  By the way, depending on the shape of the vehicle body or the front door, for example, it may be necessary to extend the seal line of the door parting seal across the hinge center (hinge rotation center) of the door hinge across the hinge center. .

  In such a case, for example, the door entry locus when the door is closed is reversed in front and back of the hinge center of the door hinge. Accordingly, the direction of the seal lip in the door parting seal is also reversed in front and back of the hinge center. It is effective.

  However, simply reversing the direction of the seal lip before and after the hinge center makes it difficult to ensure the continuity of the seal line, and there is still room for improvement. In other words, it is not sufficient to simply reverse the direction of the seal lip, and it is almost constant surface pressure in any part before and after the hinge center, that is, regardless of the position before and after the hinge center. If the seal lip is not uniformly pressed against the mating member with the same degree of bending reaction force in any part, the intended purpose cannot be achieved, and the durability of the seal lip can be improved. As a result, it is not preferable.

  The present invention has been made paying attention to such problems, and even if the seal line of the seal lip in the door parting seal straddles the front and rear of the hinge center, the continuity of the seal line is improved. The door parting is designed to further improve the sealing performance and the durability of the sealing lip by ensuring that the sealing lip is pressed against the mating member with almost constant surface pressure at any location. A seal is provided.

  The invention according to claim 1 is mounted on the edge of the hinged door of the automobile near the hinge center of the door hinge, and presses against the other part that faces the edge when the door is closed. The structure of a door parting seal that seals the parting part formed by the end edge and the counterpart site is assumed.

  In addition, a seal lip that directly participates in the seal when the door is closed is set so as to extend across the hinge center and before and after the hinge center.

  Further, in the general part of the door parting seal that is the front side or the rear side of the hinge center and is rotated and displaced toward the vehicle outer side together with the door edge when the door is closed, the vehicle outer side is convex. Thus, the curved or bent cantilever type seal lip having a substantially arc-shaped cross section is brought into pressure contact with the counterpart site from the vehicle inner side toward the vehicle outer side when the door is closed.

  On the other hand, in the reversing part of the door parting seal that is the rear side or the front side of the hinge center and that is rotationally displaced toward the inside of the vehicle together with the edge of the door when the door is closed, A cantilever-type seal lip that protrudes obliquely toward the outside of the vehicle with the inside as the root is pulled into the vehicle inside first from the root when the door is closed, so that the seal lip is directed from the outside to the vehicle inside. It is designed to be pressed against the other site.

  Furthermore, in the portion close to the reversing portion in the general portion, the cross-sectional shape of the seal lip is a gradually deforming shape that smoothly changes from the general portion side toward the reversing portion side.

  More specifically, as described in claim 2, the seal lip of the general part is a first seal lip, the seal lip of the reversing part is a second seal lip, and the first seal lip Of these, a portion close to the reversing portion has a gradually changing seal lip shape whose cross-sectional shape smoothly changes from the first seal lip side toward the second seal lip side.

  Preferably, the gradually changing seal in which the cross-sectional shape of the portion of the first seal lip close to the reversing portion gradually increases from the first seal lip side to the second seal lip side as described in claim 3. A lip shape is desirable.

  In this case, as described in claim 4, the door parting seal is formed by integrally forming a first seal lip and a second seal lip at the tip of a plate-like base portion mounted on the inside of the door. It shall be.

  Desirably, as described in claim 5, in the first seal lip, the lip is further extended from an intermediate web formed at the tip of the base portion, so that a curved or bent piece so that the vehicle outer side is convex. It is assumed that the seal lip shape has a substantially arc shape in cross section. On the other hand, in the gradually changing seal lip shape part which is a part of the first seal lip, at least the length of each of the intermediate web and the lip, the angle of the intermediate web with respect to the base, and the angle of the lip with respect to the intermediate web are the second seal. By gradually changing toward the lip side, a portion close to the second seal lip has a seal lip shape having a substantially V-shaped cross section opened toward the vehicle outer side by the intermediate web and the lip. It is assumed that it has a lip shape and is smoothly continued to the second seal lip.

  More preferably, in the second seal lip, the intermediate web is superposed on the base portion so that the intermediate web functions as a part of the base portion. And a lip that opens toward the outside of the vehicle, and has a substantially V-shaped cross section. When the door is closed, at least the lip is pulled deeper into the interior of the vehicle than the parting part. It shall be.

  As for the relationship between the general part and the reversing part, for example, as described in claim 7, the general part of the door parting seal is mounted on the vertical edge of the hinged door near the hinge center of the door hinge. Thus, it is assumed that the upper end of the general part is an inverted part.

  Here, in many cases, the invention described in each claim is applied to the front end portion of the hinged front door. The same applies to the rear end of the rear door.

  Therefore, in at least the first aspect of the invention, the functionally most important seal lip of the door parting seal extends across the hinge center and front and rear thereof, and accordingly, the front side and the rear side of the hinge center. Since the approach locus when the door is closed is reversed, even if the direction of the seal lip is reversed before and after the hinge center, the seal of the general part of the door parting seal is close to the reverse part. The cross-sectional shape of the lip is a gradually deforming shape that smoothly changes from the general part side toward the reversing part side, so that the continuity of the seal line can be secured before and after the hinge center. Since the bending reaction force of the seal lip can be made almost uniform at any position, it contributes to the improvement of the seal lip and the durability of the seal lip. It becomes possible.

  According to the first to third aspects of the invention, the continuity of the seal line by the seal lip can be ensured before and after the hinge center, and the bending reaction force (surface pressure) of the seal lip is almost equal at any position. Therefore, the durability of the seal lip is improved along with the improvement of the sealing performance.

  According to the fourth aspect of the invention, since the first seal lip and the second seal lip are integrally formed at the tip of the plate-like base portion, the bending reaction force (surface pressure) of the seal lip is determined at any position. However, it becomes more advantageous to make it almost equal.

  According to the fifth aspect of the present invention, the seal lip shape cantilevered on the first seal lip side and has a substantially arc-shaped cross-section to the seal lip shape having a substantially V-shaped cross-section on the second seal lip side. Since it is made continuous, in addition to the same effects as those of the first to fourth aspects of the invention, it is possible to prevent the seal lip from turning over when the door is opened and closed, thereby further contributing to the improvement of the sealing performance.

  According to the sixth aspect of the present invention, the second seal lip has a substantially V-shaped cross section opening toward the vehicle outer side, and at least when the door is closed, the lip is located on the vehicle inner side than the parting portion. Since the sealing is achieved by pulling it to the back, it is more advantageous to secure the sealing performance by the second sealing lip and to prevent the sealing lip from protruding from the parting portion.

The front perspective view which shows an example of the motor vehicle to which the door parting seal which concerns on this invention is applied. The disassembled perspective view which shows the relationship between the left front door and door parting seal of the motor vehicle of FIG. The front view which looked at the door parting seal of FIG. 2 from the vehicle outer side. The rear view of the door parting seal | sticker of FIG. The expanded sectional view which follows the SA-SA line of FIG. The B section enlarged view of FIG. 7A is a cross-sectional view taken along line S5-S5 in FIG. 6, FIG. 6B is a cross-sectional view taken along line S7-S7 in FIG. Sectional drawing which follows the S8-S8 line | wire of a figure. 7A is a cross-sectional view taken along line S9-S9 in FIG. 6, FIG. 6B is a cross-sectional view taken along line S10-S10, and FIG. Sectional drawing which follows the S11-S11 line | wire of a figure. 7A is a cross-sectional view taken along line S12-S12 in FIG. 6, FIG. 6B is a cross-sectional view taken along line S14-S14 in FIG. 6, and FIG. Sectional drawing which follows the S15-S15 line | wire of a figure. The enlarged view of (A) of FIG. The enlarged view of (B) of FIG. The enlarged view of (C) of FIG. The enlarged view of (A) of FIG. The enlarged view of (B) of FIG. The enlarged view of (C) of FIG. The enlarged view of (A) of FIG. The enlarged view of (B) of FIG. The enlarged view of (C) of FIG.

  1 to 9 are views showing a more specific first embodiment of a door parting seal (hereinafter simply referred to as a parting seal) according to the present invention, and particularly FIG. 1 is a party according to the present invention. FIG. 2 is an exploded perspective view showing the relationship between the hinged front door 1 and the parting seal 4 in FIG. 3 and 4 respectively show a front view and a rear view of the parting seal 4 alone, and FIG. 5 shows an enlarged cross-sectional view taken along the line SA-SA in FIG.

  FIG. 1 shows a four-door type vehicle having a hinged rear door 2 as well as a hinged front door 1, for example, when the front door 1 is opposed to the rear edge of the front fender 3 when the door is closed. As shown in FIG. 2, a parting seal 4 is disposed along the vertical direction at the front end as an edge. More specifically, as shown in FIG. 5, a door inner panel 1 b that is an inner side surface of the vehicle inner side at the front end portion of the front door 1 and is hemmed to the door outer panel 1 a at the hemming joint 5. A relatively wide parting seal 4 as a whole is fixedly disposed on the inner surface of the stepped portion 6 with a clip 7 or the like.

  The parting seal 4 includes a wide and plate-like base portion 8 that is superposed on the inner side of the door inner panel 1b, and extends from the front end portion in the width direction of the base portion 8 to the vehicle outer side. It is composed of a tongue-like seal lip 9 that is bent into a hem. Then, as shown in FIG. 5, the parting seal 4 is pressed and fixed to the door inner panel 1b by press-fitting the clip 7 into the mounting holes respectively formed in the base 8 and the door inner panel 1b. In addition, when the front door 1 is in a closed state, the seal lip 9 of the parting seal 4 is in pressure contact with the end seal surface 10 on the front fender 3 side, which is the counterpart site, thereby forming a gap between them. However, the parting part P is sealed so as to be closed.

  The parting seal 4 in the present embodiment is formed by integrally forming a seal lip 9 made of a soft resin material at the front end in the width direction of a plate-like base portion 8 formed of a hard resin material. For example, when the base portion 8 is formed of relatively hard polypropylene (PP), the seal lip 9 is formed to be softer than the base portion 8 with a composite material of soft PP and EPDM. In this case, if the base 8 is injection molded (molded) in advance using PP as a material, the base 8 is set in another mold as an insert, and a composite material of soft PP and EPDM is used as a material. By using the sealing lip 9 to form the sealing lip 9, the sealing lip 9 is formed integrally with the base portion 8 by a so-called insert molding method.

  5 indicates a baffle plate made of rubber or resin material disposed inside the front fender 3, 12 indicates a door hinge, and HS indicates a hinge center (hinge rotation center) of the door hinge 12. Show. Further, the approach path of the seal lip 9 to the end seal surface 10 of the seal lip 9 when the door is closed, that is, the approach direction of the seal lip 9 to the end seal surface 10 on the side of the front fender 3 that is the counterpart, is indicated by the symbol Q. Further, the baffle plate 11 forms a part of the end seal surface 10 at the rear end of the front fender 3 as will be described later.

  As apparent from FIGS. 3, 4, and 5, the parting seal 4 in the present embodiment spans both the front side and the rear side of the hinge center HS across the hinge center HS in a side view of the vehicle. Of course, the sealing lip 9 that is most functionally important among the parting seals 4 extends over both the front side and the rear side of the hinge center HS with the hinge center HS interposed therebetween.

  Here, since the upper end part near the door waist part (belt line) of the parting seal 4 is curved toward the vehicle rear side to form the wedge-shaped terminal part 13, it is the wedge-shaped terminal part 13. Regardless of whether or not, the part of the parting seal 4 in which the seal lip 9 is on the front side of the hinge center HS is referred to as a general part 4A, and the part of the seal lip 9 on the rear side of the hinge center HS is referred to as the inversion part 4B. Shall be referred to as The seal lip 9 on the general part 4A side is referred to as a first seal lip 9a, and the seal lip 9 on the reversing part 4B side is referred to as a second seal lip 9b.

  Under such a structure, when the door is closed, in the general portion 4A of the parting seal 4, the first seal lip 9a together with the edge of the door 1 from the vehicle interior side to the vehicle interior exterior, as shown in FIG. While rotating and displacing toward the end seal surface 10 on the front fender 3 side, the behavior on the reversing part 4B side is that the approach direction Q is reversed or reversed with respect to the general part 4A. In the portion 4B, as shown in FIGS. 17 and 18, which will be described later, when the door is closed, the second seal lip 9b is rotationally displaced together with the edge of the door 1 from the outside of the passenger compartment toward the inside of the passenger compartment. The end seal surface 10 is pressed.

  Thus, in the first seal lip 9a on the general part 4A side and the second seal lip 9b on the reversing part 4B side, the protruding direction of each seal lip 9a, 9b and the end seal surface 10 on the mating side when the door is closed. Even if the approach directions Q are reversed, it is considered that the seal line is continuous from the first seal lip 9a side to the second seal lip 9b side without interruption.

  As described above, FIG. 5 is an enlarged sectional view taken along line SA-SA in FIG. FIG. 6 shows an enlarged view of a portion B in FIG. 3, and sectional views taken along lines S5-S5 to S15-S15 in FIG. 7 are shown in (A) to (C) of FIGS. Yes. As is apparent from FIGS. 7 to 9, the baffle plate 11 previously shown in FIG. 5 extends to the wedge-shaped end portion 13 and substantially overlaps with the end seal surface 10 in plan view. It functions as a part of the end seal surface 10.

  As apparent from FIGS. 3 and 5, in the part other than the wedge-shaped end portion 13 of the parting seal 4, the cross-sectional shape is substantially constant. As is apparent, the sectional shape of the parting seal 4 from the general portion 4A side to the reversing portion 4B side, that is, the sectional shape of the plate-like base 8, and the sectional shape and section of the first and second seal lips 9a, 9b. As a result, the first and second seal lips 9a and 9b protrude in the front and rear directions of the hinge center HS and the first and second seal lip shapes as described above. Even if the approach direction Q when the doors of the seal lips 9a and 9b are closed is reversed, the continuity of the seal lines of the first and second seal lips 9a and 9b is ensured.

  FIGS. 10 to 18 show the enlarged cross-sectional shapes of FIGS. 7 to 9 (A) to (C). Here, characteristic shape changes in the respective cross-sections will be described.

  In the general part 4A of the parting seal 4, as shown in FIG. 5, a slant wall-like flange part 8a is bent at the tip part of the flat plate-like base part 8, and is extended from the tip part of the flange part 8a. A cantilevered first seal lip 9a is integrally formed so as to be formed. The first seal lip 9a is formed so as to extend the intermediate web 14 from the tip of the flange portion 8a, and further has a curvature relative to the intermediate web 14 in relation to a second seal lip 9b on the reversing portion 4B side to be described later. The first seal lip 9a has a generally arcuate cross section that is curved or bent so that the outside of the vehicle has a convex shape. The cylindrical surface on the vehicle outer side of the one seal lip 9a is sealed by being pressed against the end seal surface 10 which is the counterpart.

  Although the cross-sectional shape of the general part 4A shown in FIG. 5 is substantially constant in the vertical direction of the general part 4A as is apparent from FIG. The cross-sectional shape gradually changes from the part 4A side toward the reversing part 4B side.

  That is, as shown in FIG. 10 which is an enlarged cross-sectional view taken along line S5-S5 in FIG. 6, the portion close to the reversing portion 4B in the general portion 4A of the wedge-shaped terminal portion 13 is compared with FIG. As can be seen, the base 8 is bent and formed as an angle in the cross section along the angled inner surface of the stepped portion 6 of the door inner panel 1b, while the flange portion 8a shown in FIG. The length is extremely short, and a first seal lip 9a having substantially the same shape as that shown in FIG. However, in FIG. 10, the radius of curvature of the tip of the first seal lip 9a is smaller than that of FIG.

  The shape of the general portion 4A including the base portion 8 and the first seal lip 9a is smoothly changed, that is, gradually changed as it approaches the reversing portion 4B, and is along the line S7-S7 in FIG. In FIG. 11 which is a cross section, the cross-sectional shape of the base 8 is slightly changed compared to FIG. 10, and the thickness of the tip of the lip 15 in the first seal lip 9a is also increased.

  Further, in FIG. 12, which is a cross-sectional view taken along the line S8-S8 in FIG. 6, the shape and orientation of the lip 15 in the first seal lip 9a are changed as compared with FIG. That is, in FIG. 12, the intermediate web 14 is bent in a generally U shape toward the inside of the vehicle, and a lip 15 having a substantially arc-shaped cross section is formed extending from the tip of the intermediate web 14. The intermediate web 14 and the lip 15 form a first seal lip 9a that is cantilevered and has a substantially V-shaped cross section that opens toward the outside of the vehicle.

  In FIG. 13, which is a cross-sectional view taken along line S9-S9 in FIG. 6, the cross-sectional shape of the first seal lip 9a is larger than that in FIG. 12, and the intermediate web 14 and the first seal lip 9a The length and thickness of each lip 15, the angle of the intermediate web 14 with respect to the base 8, and the angle of the lip 15 with respect to the intermediate web 14 change. As a result, in FIG. 13, the cross-sectional shape of the first seal lip 9a is increased while maintaining the similar shape to that of FIG.

  In FIGS. 10 to 13 so far, since the lip 15 is formed at the tip of the cantilevered intermediate web 14, the elastic force of the intermediate web 14 has more or less influence on the bending reaction force of the lip 15. Become.

  14, which is a cross-sectional view taken along line S10-S10 in FIG. 6, as apparent from comparison with FIG. 13, the cross-sectional shape of the first seal lip 9 a is maintained while maintaining the similar shape to FIG. 13. The shape is further increased with the cross-sectional area. In particular, in FIG. 14, the tip shape of the base portion 8 is changed compared to FIG. 13, the flange portion 8 a of FIG. 13 is almost lost, and most of the intermediate web 14 is superposed on the tip of the base portion 8. Thus, substantially the majority of the intermediate web 14 is backed up by the base 8. 14, the influence of the elastic force of the intermediate web 14 on the bending reaction force of the lip 15 is reduced, and the bending reaction force of the lip 15 greatly depends on its own elastic force.

  As shown in FIG. 15 which is a cross-sectional view taken along the line S11-S11 in FIG. 6 and in FIG. 16 which is a cross-sectional view taken along the line S12-S12 in FIG. While maintaining the cross-sectional shape of the lip 9a similar to that of FIG. 14, the cross-sectional shape of the lip 9a gradually increases with the cross-sectional area. In these FIGS. 15 and 16, the cross-sectional shape of the base 8 is slightly changed as compared with FIGS.

  FIG. 17 which is a cross-sectional view taken along the line S14-S14 in FIG. 6 and FIG. 18 which is a cross-sectional view taken along the line S15-S15 in FIG. 6 both show the cross-sectional shape of the reversing part 4B. As is clear from the above, the cross-sectional shape of the second seal lip 9b is gradually increased with the cross-sectional area while maintaining the similar shape to the first seal lip 9a of FIG. 16 as the cross-sectional shape of the second seal lip 9b. In FIGS. 17 and 18, the cross-sectional shape of the base 8 is slightly changed as compared with FIGS.

  That is, in FIG. 12, which is an enlarged cross-sectional view taken along line S8-S8 in FIG. 6, which is the general portion 4A of the wedge-shaped terminal portion 13, a cross section in which the cross-sectional shape of the first seal lip 9a is opened toward the vehicle exterior for the first time. While changing to a substantially V-shaped seal lip shape, the second seal is maintained while maintaining a similar shape to the cross-sectional shape of the first seal lip 9a having a substantially V-shaped cross section in the process of passing through the cross sections of FIGS. The cross-sectional shape of the lip 9b is gradually enlarged and finally converges with the cross-sectional shape of FIG.

  As a result, in the wedge-shaped terminal portion 13, a portion of the first seal lip 9a on the general portion 4A side that is close to the reversing portion 4B is directed from the first seal lip 9a side to the second seal lip 9b side on the reversing portion 4B side. Thus, the cross-sectional shape is a gradually changing seal lip shape that increases smoothly.

  In FIGS. 15 and 16, which are sectional views taken along lines S11-S11 and S12-S12 in FIG. 6, the seal portion and hinge center by the seal lip 9 (first seal lip 9a or second seal lip 9b) are shown. HS is the closest.

  According to the structure of the parting seal 4 configured as described above, in the general portion 4A, as shown in FIGS. 10 to 16 in addition to FIG. 5, the first seal lip 9a moves from the vehicle inner side to the vehicle outer side when the door is closed. The lip 15 is displaced toward the approaching locus Q, and the lip 15 is brought into pressure contact with the other end seal surface 10 to exert a sealing function. In this case, in addition to FIG. 5, in FIGS. 10 and 11, the cylindrical outer peripheral surface of the lip 15 having an arcuate cross section comes into pressure contact with the end seal surface 10 on the opposite side from the base side, while the first seal lip In FIGS. 12 to 16 in which 9a has a gradually changing seal lip shape, even if the seal lip 9a has a substantially V-shaped cross-section, the end of the lip 15 having an arc-shaped cross-section is opposed to the other end. The part seal surface 10 is pressed.

  On the other hand, in the reversing part 4B, as shown in FIGS. 17 and 18, when the door is closed, the second seal lip 9b is displaced from the vehicle outer side toward the vehicle inner side under the approach locus Q, and the lip 15 is the other party. The end seal surface 10 on the side is pressed against and exerts a sealing function. That is, in the reversing portion 4B, the seal lip 9b having a substantially V-shaped cross section is displaced so as to be pulled in from the root side to the vehicle inner side, and is in pressure contact with the mating end seal surface 10.

  In this case, as described above, in FIGS. 10 to 14, the intermediate web 14 that supports the lip 15 at the tip of the first seal lip 9a functions as a so-called cantilever beam. The pressure contact force or the bending reaction force when pressed against the other end seal surface 10 depends more or less on the elastic force of the intermediate web 14. On the other hand, in FIGS. 15 to 18, since most of the intermediate web 14 is substantially backed up by the base 8, and the intermediate web 14 cannot function as a cantilever, the lip 15 is at the other end. The pressure contact force or the bending reaction force when pressed against the partial seal surface 10 does not depend on the elastic force of the intermediate web 14 but depends only on the elastic force of the lip 15 itself.

  For this reason, in the general portion 4A and the reversing portion 4B, the protruding directions of the first and second seal lips 9a and 9b and the entry locus Q when the doors of the first and second seal lips 9a and 9b are closed are shown. Even if the direction (approach direction) is reversed, the continuity of the seal lines of the first and second seal lips 9a, 9b can be ensured. In addition, regardless of whether the parting seal 4 is the general part 4A or the reversing part 4B, the pressure contact force or the bending reaction when the lip 15 presses against the mating end seal surface 10 in any part. Since the force can be made substantially constant, it is possible to improve the durability of the lip 15 by improving the sealing performance and preventing the occurrence of so-called local strong hitting.

  In addition, regardless of whether it is the general part 4A or the reversing part 4B, the shape of the lip 15 that is the most important in terms of function is a substantially arc-shaped cross section that is convex toward the end seal surface 10 on the other side. Since it is formed, it is possible to prevent protrusion from the parting portion P and to prevent the occurrence of turning-up phenomenon at the time of lip pressure contact with the end seal surface 10, which also contributes to improvement of the sealing performance. can do.

  Here, in the above embodiment, the door parting seal applied to the parting part formed by the front end of the hinged front door and the front fender has been described. Needless to say, can also be applied to a parting part formed by a hinged rear door and a rear fender.

DESCRIPTION OF SYMBOLS 1 ... Front door 3 ... Front fender 4 ... Door parting seal 4A ... General part 4B ... Inversion part 8 ... Base part 9 ... Seal lip 9a ... 1st seal lip 9b ... 2nd seal lip 10 ... End seal surface (partner side) Part)
DESCRIPTION OF SYMBOLS 11 ... Baffle plate 12 ... Door hinge 13 ... Wedge-shaped terminal part 14 ... Intermediate | middle web 15 ... Lip HS ... Hinge center P ... Parting part Q ... Approach locus (approach direction)

Claims (7)

It is mounted on the edge of the hinged door of an automobile near the hinge center of the door hinge, and presses against the other side part that faces the above edge when the door is closed. A door parting seal that seals the parting part,
Of the door parting seal, the seal lip that directly participates in the seal when the door is closed is set to extend across the hinge center and before and after the hinge center,
The outer part of the door parting seal is a front part or rear part of the hinge center, and the outer part is convex in the general part that rotates and displaces with the edge of the door when the door is closed. While the curved or bent cantilevered seal lip having a substantially arc-shaped cross section is adapted to press against the other side part from the vehicle inner side toward the vehicle outer side when the door is closed,
Of the door parting seal, the rear part or the front part of the hinge center and, unlike the general part, when the door is closed, the reversing part that rotates and displaces toward the vehicle inner side together with the door edge, A cantilever-type seal lip that protrudes obliquely toward the vehicle exterior as the root portion is pulled into the vehicle interior first from the root portion when the door is closed, so that the seal lip is directed from the vehicle exterior toward the vehicle interior. It is supposed to be pressed against the part,
The door parting of an automobile characterized in that the cross-sectional shape of the seal lip is a gradually deformed shape that smoothly changes from the general part side toward the reversing part side in the part close to the reversing part in the general part. sticker. The seal lip of the general part is a first seal lip, the seal lip of the reversing part is a second seal lip,
A portion of the first seal lip close to the reversing portion has a gradually changing seal lip shape whose cross-sectional shape smoothly changes from the first seal lip side toward the second seal lip side. The door parting seal | sticker of the motor vehicle of Claim 1.   A portion of the first seal lip close to the reversing portion has a gradually changing seal lip shape whose cross-sectional shape gradually increases from the first seal lip side toward the second seal lip side. Item 3. A door parting seal for automobiles according to Item 2.   4. The door parting seal according to claim 3, wherein a first seal lip and a second seal lip are integrally formed at a tip of a plate-like base portion mounted on the inside of the door. Automotive door parting seal. In the first seal lip, by extending the lip further from the intermediate web formed at the tip of the base portion, the seal lip shape is a cantilever type that is curved or bent so that the outside of the vehicle is convex and has a substantially arc-shaped cross section. On the other hand,
In the gradually changing seal lip shape portion which is a part of the first seal lip, at least the length of each of the intermediate web and the lip, the angle of the intermediate web with respect to the base, and the angle of the lip with respect to the intermediate web are on the second seal lip side. By gradually changing toward the second seal lip, the portion close to the second seal lip has a substantially lip-shaped seal lip shape that opens toward the vehicle exterior by the intermediate web and the lip.
5. The door parting seal for an automobile according to claim 4, wherein the seal lip shape is smoothly continuous with the second seal lip.   In the second seal lip, the intermediate web is superposed on the base portion so that the intermediate web functions as a part of the base portion. 6. A seal lip shape having a V-shape, wherein when the door is closed, at least the lip is pulled to the back of the vehicle inner side rather than the parting portion, and sealing is performed. Automotive door parting seal.   The general part of the door parting seal is mounted on a vertical edge part of the hinged door near the hinge center of the door hinge, and the upper end part of the general part is an inverted part. The door parting seal | sticker of the motor vehicle in any one of -6.

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