JP2005088809A - Opening trim weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening trim weather strip with a preferable appearance that can prevent abnormal deformation in a hollow sealing part when an extrusion-molded product is bent and mounted in a corner part. <P>SOLUTION: The opening trim weather strip for an automobile 10 is provided with a trim part 20 mounted on a flange 5 and the hollow sealing part 30. The hollow sealing part is provided with two root parts formed out of a solid material integrally extending respectively from a position slightly to the front end on the opening side from a connection part between the front end on the opening side on the external surface of the side wall 21 outside the vehicle and the bottom wall 22 of the trim part, and an arc part 34 forming the hollow part. Out of the two root parts, the first root part 32 positioned in the front end on the opening side of the trim part is formed to be thicker than the second root part 33 positioned on the bottom wall side of the trim part, and the first root part is extended from the side wall 21 outside the vehicle almost in parallel with an outer panel 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an automotive opening trim weather strip that seals between an opening edge of a vehicle body and a door.

  As shown in FIG. 1, an opening trim weather strip 110 is attached between an opening edge 1a of a vehicle body 1 of an automobile and a door 2 for sealing. The opening trim weather strip 110 includes, for example, a trim portion 120 having a substantially U-shaped cross section and a hollow seal portion 130 having a hollow shape as shown in FIG. Then, the flange of the vehicle body 1 is inserted into the groove of the trim portion 120 to attach the opening trim weather strip 110 to the vehicle body 1, and the hollow seal portion 130 is brought into contact with the peripheral edge portion of the door 2 to open the opening edge 1 a of the vehicle body 1. It is sealed between.

  Since this opening trim weather strip 110 is formed by extrusion molding, it is linear at the time of molding. However, the opening edge 1a of the vehicle body has a corner portion, and the opening trim weather strip 110 attached thereto is an opening trim that is linearly extruded corresponding to the corner portion of the opening edge 1a of the vehicle body. A weather strip 110 is bent and attached along the corner. For this reason, when the curvature of the bent portion of the corner portion is small, the hollow seal portion 130 of the opening trim weather strip 110 is crushed and deformed, and the appearance is not good, and the sealing performance may be lowered.

  In view of this, there is a type in which a pad made of an elastic body is inserted into a hollow seal portion attached to a bent portion of a corner portion to prevent the hollow seal portion from being crushed (see, for example, Patent Document 1). However, in this case, it is necessary to insert the pad surely at the position corresponding to the corner portion of the hollow seal portion, which takes time and effort. Further, in order to insert a plurality of pads into the hollow seal portion of one opening trim weather strip, it is necessary to position each pad separately, which may be difficult.

Further, the corner portion is formed by molding (a portion indicated by 150 in FIG. 4), and the linear portion (the portion indicated by 140 in FIG. 4) formed by extrusion molding is molded simultaneously with the molding of the corner portion. Connection is also performed within the network (for example, see Patent Document 2). However, when the corner portion is formed by mold forming, the mold forming operation is required, which is troublesome and increases the cost. In addition, the molded part (150) and the extrusion part (140) have different surface gloss and the like, and the connecting part (150a) has streaks, which may cause poor appearance.
Utility Model Registration No. 2604441 (Page 2, Figures 1 and 2) Japanese Patent Publication No. 8-13622 (page 2-3, Fig. 6)

  Therefore, the present invention is easy to manufacture, has good sealing properties and good appearance, and particularly when one extruded product is curved and mounted at the corner portion, the sealing portion does not deform abnormally, The object is to provide a good opening trim weatherstrip.

  In order to solve the above-mentioned problems, the present invention of claim 1 is an automotive opening trim weather strip that seals between an opening edge of a vehicle body and a door, and the opening trim weather strip is an outer panel of the opening edge. And a trim portion mounted on the flange of the inner panel, and a hollow seal portion that seals between the opening edge and the door, the trim portion having a substantially U-shaped cross section, a vehicle outer side wall, and a bottom wall And the hollow seal portion is integrally formed at a position slightly closer to the opening side end from the connecting portion between the outer side wall outer surface at the opening end of the trim portion and the bottom wall of the outer side wall outer surface. 2 root portions made of a solid material extending in the form of an arc, and an arc portion made of a sponge material and having a circular arc shape with both ends continuously forming two hollow portions. The root of the book That is, the first root portion located at the opening end of the trim portion is formed thicker than the second root portion located slightly closer to the opening end from the connecting portion with the bottom wall of the trim portion, An automotive opening trim weather strip, wherein a first root portion extends from a side wall of the outer side of the outer panel substantially parallel to a surface of a root portion of the flange of the outer panel.

  In the first aspect of the present invention, the opening trim weather strip has a hollow hollow seal portion and a trim portion having a substantially U-shaped cross section, and a trim portion having a substantially U-shaped cross section is formed on the flange at the opening edge of the vehicle body. The opening trim weather strip can be securely attached to the vehicle body. Further, since the hollow hollow seal portion elastically contacts the peripheral edge portion of the door, it is possible to seal the door and the vehicle body by absorbing the size of the door, variation in assembly, and the like.

  The hollow seal portion is composed of two solid materials each extending from a position slightly closer to the opening side tip from the connecting portion between the outer side wall outer surface at the opening end of the trim portion and the bottom wall portion of the outer side wall outer surface. And a circular arc portion that is formed of a sponge material and has both ends thereof and a circular arc portion that continuously forms a hollow portion with the tips of the two root portions. For this reason, the base portion of the hollow seal portion is a solid material, has high rigidity, is difficult to deform, and even if the opening trim weather strip is bent at the corner portion, the hollow shape can be substantially retained by this root portion. The hollow part is not deformed and collapsed. In addition, since the arc portion made of sponge material is provided integrally with the root portion, the portion that comes into contact with the door can be made a flexible and flexible member, and the deformation of the arc portion can be applied to the contact surface of the door. It can follow and absorb the unevenness of the surface of the door and the variation in the assembly dimensions of the door and the vehicle body to obtain a stable sealing property.

  Of the two root parts of the hollow seal part, the first root part at the opening side of the trim part is formed thicker than the other second root part, so the rigidity of the first root part is increased, Even if the opening trim weather strip is bent and attached along the corner portion of the opening edge, the hollow seal portion does not collapse. Further, when the door comes into contact with the arc portion of the hollow seal portion, the first root portion is not deformed due to the deformation of the arc portion. In particular, when the door contacts the arc portion from an oblique direction, even if the arc portion is deformed to be drawn into the hollow, the first root portion is not deformed to be drawn into the hollow, There is no large gap between the outer panel of the opening edge of the vehicle body. For this reason, the contact part of an outer panel and a 1st base part remains in the state which is hard to see, and is good-looking.

  Furthermore, since the first root portion extends from the outer surface of the vehicle outer side wall substantially parallel to the surface of the flange base portion of the outer panel, the arc portion of the hollow seal portion is formed substantially perpendicular to the vehicle outer side wall. It can extend from the front-end | tip of the 1st root part currently made, the space in a hollow seal part can be enlarged, and a hollow seal part can be formed with a bulge. For this reason, a volume feeling can be given to a hollow seal part and it looks good. Further, since the first root portion can be formed substantially perpendicular to the vehicle outer side wall of the trim portion, even if the bulge portion of the door pushes the hollow seal portion when the door is closed, a force is applied in the vertical direction of the first root portion. Therefore, the first root portion is hardly deformed, the hollow seal portion is not crushed, and the sealing property is good. Further, since the surface of the flange base portion of the outer panel and the first base portion are substantially parallel, the gap between them is small, and is formed by bending the opening end of the trim portion and the panel which is the base portion of the flange of the body. The part which is covered can be concealed, and the appearance between the opening trim weather strip and the outer panel is good.

  The present invention of claim 2 is an opening trim weather strip for automobiles that seals between the opening edge of the vehicle body and the door, and the opening trim weather strip is attached to the flanges of the outer panel and the inner panel of the opening edge. A trim portion, and a hollow seal portion that seals between the opening edge and the door, and the trim portion has a substantially U-shaped cross section, and includes a vehicle outer side wall, a bottom wall, and a vehicle inner side wall. The hollow seal portion is made of a solid material that integrally extends from a position slightly closer to the opening side tip from the connecting portion between the outer side wall outer surface at the opening end of the trim portion and the bottom wall of the outer side wall outer surface. Trim of two root parts, having a circular arc shape made of sponge material and having both ends formed in a circular arc continuously from the two root parts. At the tip of the opening side The first base portion at the position is formed to be thicker than the second root portion at a position slightly closer to the opening side tip from the connecting portion with the bottom wall of the trim portion, and the tip of the vehicle outer side wall and the first root portion An opening trim weather strip for an automobile, wherein an outer surface of a joint portion of the portion abuts a surface of a root portion of the flange of the outer panel when the trim portion is attached to the flange.

  In the second aspect of the present invention, as in the first aspect of the present invention, the opening trim weather strip has a hollow seal portion having a hollow shape and a trim portion having a substantially U-shaped cross section. By attaching a trim portion having a substantially U-shaped cross section to the opening trim, the opening trim weather strip can be securely attached to the vehicle body. Further, the hollow hollow seal portion elastically abuts on the peripheral edge portion of the door, so that the door and the vehicle body can be sealed by absorbing variations in the dimensions and assembly of the door.

  Since the hollow seal portion is provided from substantially both ends of the outer side wall 21 of the trim portion, the space in the hollow seal portion can be increased, the contact area with the bulging portion of the door can be increased, and the door Even if there is variation in the position of the bulging portion, it can be surely brought into contact with the hollow seal portion, and the gap between the opening edge of the vehicle body and the door can be reliably sealed.

  Further, the hollow seal portion is composed of two root portions made of a solid material integrally extending from both ends in the width direction of the outer side wall of the trim portion and a sponge material, and has an arc shape. Both ends have a tip portion of two root portions and an arc portion that continuously forms a hollow portion. For this reason, the base portion of the hollow seal portion is a solid material, has high rigidity, is difficult to deform, and even if the opening trim weather strip is bent at the corner portion, the hollow shape is substantially retained by these two base portions. And the hollow part is not deformed and collapsed. In addition, since the arc portion made of sponge material is provided integrally with the root portion, the portion that comes into contact with the door can be made a flexible and flexible member, and the deformation of the arc portion can be applied to the contact surface of the door. It can follow and absorb the unevenness of the surface of the door and the variation of the assembly dimensions of the door and the vehicle body to obtain a stable sealing property.

  Of the two root parts of the hollow seal part, the first root part at the opening side of the trim part is formed thicker than the other second root part, so the rigidity of the first root part is increased, Even when the opening trim weather strip is bent and attached along the corner portion of the opening edge, the hollow seal portion does not collapse. Further, when the door comes into contact with the arc portion of the hollow seal portion, the first root portion is not deformed due to the deformation of the arc portion. In particular, when the door abuts against the arc portion from an oblique direction, even if the arc portion is deformed so as to be pulled into the hollow space, the first root portion is not deformed so that the opening of the vehicle body is prevented. There is no large gap between the edge panels. For this reason, the contact | abutting with the outer surface and the front-end | tip outer surface of a 1st base part remains in the state which is hard to see, and is good-looking.

  Further, the outer surface of the joint portion of the trim outer side wall and the first base portion abuts against the bent surface which is the base portion of the flange of the outer panel when the trim portion is mounted on the vehicle body. The first root portion can be contacted at one point in the cross-sectional view of the front end of the vehicle outer side wall and the outer surface of the joint portion of the first root portion, and it can be surely pressed and there is no gap between it and the outer panel. Excellent sealing performance.

  According to the third aspect of the present invention, when the trim portion is mounted on the vehicle body, the outer surface of the joint portion between the first root portion and the front end of the vehicle outer side wall abuts the outer panel, and the first root portion and the outer panel This is an automotive opening trim weather strip that is configured to have a slight gap that gradually increases as it goes in the direction of the vehicle outer side of the first root portion.

  According to the third aspect of the present invention, when the trim portion is attached to the vehicle body, the outer surface of the joint portion between the first root portion and the tip of the vehicle outer side wall abuts the outer panel, and the outer panel and the first root portion are substantially omitted. Although it is parallel, the gap between the first root portion and the outer panel is configured to be a slight gap that gradually expands in the direction of the continuous portion with the arc portion of the first root portion. The outer panel and the first root portion can be in contact with each other at one point on the outer surface of the joint portion of the first root portion and the tip of the vehicle outer side wall, and the first root portion is in contact with the outer panel at other locations. There is nothing. Therefore, the sealing performance between the outer panel and the first root portion is good. Further, since the gap between the outer panel and the first root portion is small and gradually increases slightly toward the outside of the vehicle, the gap is inconspicuous and looks good.

  According to a fourth aspect of the present invention, when the trim portion is attached to the vehicle body and the door is closed, the distance between the tip of the bulge portion of the door and the vehicle outer side wall is greater than the height to the tip of the first root portion. Opening trim weather strip.

  In the present invention of claim 4, when the door is closed, the distance between the tip of the bulging portion of the door and the side wall on the vehicle outer side is greater than the height to the tip of the first root portion. Even if it is pushed by the bulging part of the door, there is a sufficient distance from the tip of the first root part. Therefore, even if the hollow seal part is pushed by the bulging part of the door when the door is closed, there is room for dents. The door closing force can be reduced without increasing so-called bottoming.

  According to the fifth aspect of the present invention, the core material embedded in the trim portion is composed of a substantially strip-shaped piece and a connecting portion in which the substantially strip-shaped piece is connected to the bottom wall portion.

  According to the fifth aspect of the present invention, since the core material embedded in the trim portion is connected by the connecting portion at the portion where each substantially strip-shaped piece is embedded in the bottom wall, the opening trim weather strip is connected to the opening edge. When being bent and attached along the corner portion, the core member deforms so that the bottom wall does not expand and contract, and the small piece at the opening end of the trim portion opens between the bottom wall. For this reason, the force pulled in the direction of the bottom wall acts on the hollow seal portion. At this time, since the first root portion is formed of a thick solid material, the hollow seal portion can be prevented from collapsing against this force.

  According to the sixth aspect of the present invention, the surface of the arc portion made of a sponge material is covered with a thin film made of a solid material.

  In the present invention of claim 6, since the surface of the arc portion made of sponge material is covered with a thin film made of solid material, a smooth solid material surface is provided on the surface of the hollow seal portion visible when the door is opened. Can look good. In particular, the boundary between the base made of solid material and the circular arc made of sponge material has boundary lines due to differences in material gloss or fine irregularities on the surface, but it must be covered with a thin film made of solid material. Thus, the boundary line can be covered, and the beauty can be further improved.

  As described above, the first base portion of the hollow seal portion is made of a solid material thick and substantially parallel to the outer panel. Further, the hollow seal portion is prevented from being crushed and deformed, and the hollow seal portion is not lifted from the panel surface of the opening edge, so that the sealing property is good and the appearance in the mounted state is good. In addition, it is not necessary to mold the corner part separately by molding, and the straight part formed by extrusion can be used as it is for the corner part, so the opening trim weather strip can be easily manufactured at low cost. Can do.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a side portion of an automobile. FIG. 2 is a front view showing a state before the opening trim weather strip 10 is attached to the flange 5 of the vehicle body. FIG. 3 shows a state in which the opening trim weather strip 10 is attached to the flange 5, and is a cross-sectional view taken along the line AA in FIG.

  The present embodiment relates to a door opening trim weather strip 10 that seals between an opening edge 1a of a vehicle body 1 and a door 2 of an automobile. In this embodiment, as shown in FIG. 1, an opening trim weather strip 10 is attached to the opening edge 1a of the vehicle body 1 with the door 2 over the entire circumference.

  As shown in FIG. 2, the opening trim weather strip 10 is formed in an annular shape so as to be attached to the entire periphery of the opening edge 1a. A general portion of the opening trim weather strip 10 is formed in a straight line by extrusion molding, and a straight one is curved at each corner portion, and both ends thereof are connected and formed by molding at the connection portion 11, Annular. Note that the opening trim weather strip 10 does not necessarily have an annular shape, and there is no mold forming portion, for example, a gap is provided only in a portion corresponding to the mold forming portion, or the opening trim weather strip 10 is mounted only on the upper half circumference of the door opening edge. It may be done.

  As shown in FIG. 3, the opening trim weather strip 10 is in contact with the trim portion 20 attached to the flange 5 of the opening edge 1a of the vehicle body 1, the bulging portion 2a of the door frame of the door 2, and the like. It is comprised from the hollow seal part 30 which seals between the opening edge 1a and the door 2. FIG. The flange 5 of the opening edge 1a is bent and overlapped by bending the terminal portions of the inner panel 3 constituting the inside of the vehicle body 1 and the outer panel 4 constituting the outside of the vehicle body 1, and spot welding or the like is performed together. It is fixed and formed into a single band. In addition, 3a is a reinforcement panel in the figure, and this reinforcement panel 3a may also be weld-fixed together.

  The trim portion 20 includes a vehicle outer side wall 21, a bottom wall 22, and a vehicle inner side wall 23, and is formed in a substantially U-shaped cross section so that the trim portion 20 can be attached to the flange 5 of the vehicle body. A core member 24 is embedded in the outer side wall 21, bottom wall 22, and inner side wall 23 of the trim portion 20 to improve the holding strength with respect to the flange 5. The core member 24 can be made of a metal such as an iron plate or a hard synthetic resin. In the case of the metal core member 24, in order to improve the flexibility when the opening trim weather strip 10 is bent and attached along the corner portion, a strip-shaped piece of metal plate is connected at the connecting portion. It is used.

  When the connecting portion of the core member 24 is provided in a portion embedded in the bottom wall 22 of the trim portion 20, when the trim portion 20 is bent along the corner portion and attached, the bottom wall 22 is expanded and contracted because of the connecting portion. Instead, it deforms so that the opening side of the trim part 20 spreads around the bottom wall 22. At this time, since the first root portion 32 is formed of a thick and solid material as described later, the hollow seal portion 30 is not crushed. The trim portion 20 can be formed by covering the core member 24 with a solid material such as solid rubber, thermoplastic elastomer, or soft synthetic resin. Forming with the same or similar material as the sponge rubber of the hollow seal portion 30 to be described later is preferable because the hollow seal portion 30 and the trim portion 20 are integrated and the bonding becomes strong.

  A hollow seal portion 30 is integrally provided on the outer surface of the vehicle outer side wall 21 of the trim portion 20, that is, on the outer surface of the U shape of the trim portion 20 having a substantially U-shaped cross section. Three vehicle exterior holding lips 26 are provided inside the vehicle exterior side wall 21. A vehicle interior holding lip 27 is provided inside the vehicle interior side wall 23. After the trim portion 20 is mounted on the flange 5, as shown in FIG. 3, the outer trim lip 26 and the inner trim lip 27 are sandwiched and held from both sides to hold the opening trim weather strip 10 as shown in FIG. The space between the trim part 20 and the flange 5 is sealed. The vehicle outer side holding lip 26 and the vehicle inner side holding lip 27 can be held by bending according to the change in the thickness of the flange 5. When the change in the thickness of the flange 5 is large, for example, when the panel member constituting the flange 5 is partially composed of 4 to 6 sheets, the length of the vehicle interior holding lip 27 is set to the thickness of the flange 5. Depending on the change, it can be formed by variable extrusion.

  The hollow seal portion 30 includes a first root portion 32, a second root portion 33, and an arc portion 34. The first root portion 32 and the second root portion 33 are integrally formed on the outer surface of the outer side wall 21 of the trim portion 20 and are formed of a solid material. For this reason, the hollow seal portion 30 is firmly and integrally formed with the trim portion 20. The same material can be used as the material forming the first root portion 32, the second root portion 33, and the trim portion 20, and in this case, they are integrally formed by simultaneous extrusion molding.

  The trim side 20 has an outer side wall 21 that is open at two ends in the width direction, i.e., at two positions slightly from the front end 21a of the car outer side wall 21 and the connecting portion between the bottom wall 22 and the front end. Two root portions 32 and 33 made of an extended solid material are formed. A first root portion 32 extends substantially parallel to the outer panel 4, that is, perpendicular to the vehicle outer side wall 21 from the front end 21 a of the vehicle outer side wall 21 which is the opening side of the vehicle outer side wall 21 of the trim portion 20. Has been.

  From the bottom wall 22 side of the vehicle outer side wall 21, a second root portion 33 is extended in an L-shaped cross section. That is, the second root portion 33 extends slightly from the outer surface of the vehicle outer side wall 21 continuous with the bottom wall 22 slightly at a right angle from the outer surface of the opening side, and immediately parallel to the vehicle outer side wall 21. It extends in the direction of the bottom wall 22. That is, the hollow of the hollow seal portion 30 is formed by being surrounded by the vehicle exterior side wall 21 of the trim portion 20, the first root portion 32, the second root portion 33, and the arc portion 34, and the first root portion 32. And the second root portion 33 protrudes directly from the vehicle outer side wall 21.

  Note that the thickness of the first root portion 32 is formed to be thicker than the thickness of the second root portion 33. For this reason, the first root portion 32 has higher rigidity than the second root portion 33 and is difficult to be deformed. A sponge material of the arc portion 34 is provided on the outer surface of the first base portion 32 so as to be invisible so that the step of the connecting portion cannot be seen from the outside of the vehicle. The first root portion 32 is formed to be substantially parallel to the outer panel 4 of the vehicle body 1 when attached to the opening edge 1a. This substantially parallel shape is provided with a slight angle so that the gap between the first base portion 32 and the outer panel 4 when attached to the outer panel 4 is slightly closer to the outside of the vehicle, that is, toward the arc portion 34. ing. The outer surface of the first root portion 32, that is, the surface on the opening edge 1 a side of the vehicle body 1 is formed into a flat surface.

  For this reason, when the opening trim weather strip 10 is attached to the opening edge 1a, a gap is formed between the first root portion 32 and the outer panel 4 as it goes to the vehicle outer side (in the direction of the arc portion 35). Because of this gap, when the tip 21a, which is a continuous part of the first base 32 with the vehicle outer side wall 21, contacts the outer panel 4 of the vehicle body 1, the other part of the first base 32 is the outer panel. 4, only the front end 21 a of the outer side wall 21 can be brought into contact with the base of the outer panel 4. As a result, the outer panel 4 and the first root portion 32 can be brought into contact with each other at a single point in cross section, a sufficient sealing pressure can be obtained, and the sealing performance is good. Further, the outer panel 4 and the opening trim weather strip 10 are in a state in which the contact point between the outer panel 4 and the hollow seal portion 30 is difficult to see from the outside due to a slight gap, and the appearance is good.

  A circular arc portion 34 made of a sponge material is integrally formed at the tips of the first root portion 32 and the second root portion 33. The arc portion 34 has an arc shape in cross section, and in this embodiment, the first base portion 32, the second base portion 33, and the seal base portion 31 are combined to form a hollow shape having a substantially egg-shaped cross section. Is forming. When the door 2 is closed, the bulging portion 2a of the door frame is brought into contact with the vicinity of the arcuate apex of the arc portion 34 to seal between the opening edge 1a of the vehicle body and the door 2. At this time, since the arc portion 34 is formed of a sponge material, the arc portion 34 is easily deformed, follows the contact surface of the bulge portion 2a of the door frame, etc., and the unevenness of the bulge portion 2a of the door frame or the door It is possible to absorb dimensional errors due to variations in assembly. In addition, the sponge material of the arc portion 34 extends and covers the outer surface of the first root portion 32 to the vicinity of the connection portion between the first root portion 32 and the vehicle outer side wall 21.

  The bottom wall 22 of the trim portion 20 of the opening trim weather strip 10 is covered by a garnish 40, and the outer surface of the lip extending from the end of the arc portion 34 and the tip 42 of the garnish 40 are brought into contact with each other. In addition to completely covering the trim portion 20, the gap generated between the bulging portion 2 a of the door 2 and the tip of the garnish 40 can be reduced. A skin 41 serving as a surface decoration member such as a fabric material is integrally bonded or fused to the surface of the garnish 40.

  The surfaces of the arc portion 34 and the first root portion 32 can be covered with a thin film 35 made of a solid material. As this solid material, the same material as the solid material used for the first root portion 32 and the second root portion 33 can be used. Covering the surface of the arc portion 34 with a solid material improves the weather resistance and wear resistance characteristics of the sponge material, and the solid material has a smoother surface than the sponge material and has a good appearance. Further, by covering the connection surface between the arc portion 34 and the first root portion 32 or the second root portion 33 with the thin film 35 made of solid material, differences in connection lines and surface gloss generated on the connection surface are eliminated. Can look good.

  Next, a method for manufacturing the opening trim weather strip 10 will be described. The opening trim weather strip 10 extrudes the trim part 20 and the hollow seal part 30 simultaneously using an extruder. The trim material 20 is manufactured by so-called triple extrusion molding in which the core material 24, the solid material, and the sponge material are simultaneously extruded. Thereby, the core member 24 can be covered and the trim portion 20 can be formed of the solid material, and the hollow seal portion 30 can be formed of the solid material and the sponge material at the same time.

  As the core member 24, steel plate, hard synthetic resin such as polypropylene, nylon, or the like is used. As the solid material, synthetic rubber such as EPDM, thermoplastic elastomer, soft synthetic resin, or the like is used. As the sponge material, a material obtained by foaming synthetic rubber such as EPDM, thermoplastic elastomer, or the like is used. In the case of thermoplastic elastomers and soft synthetic resins, the subsequent vulcanization step is not necessary if extrusion molding is performed. However, in the case of synthetic rubber, it is transferred to a vulcanizing tank after extrusion molding, and then hot-air vulcanization or high-frequency vulcanization is performed. I do. At this time, rubber vulcanization and foaming are simultaneously performed in the vulcanization tank.

  Next, a state where the opening trim weather strip 10 of the present invention is mounted on an automobile will be described. The trim portion 20 of the opening trim weather strip 10 is attached to the flange 5 of the opening edge 1 a of the vehicle body 1. At this time, the flange 5 can be held and held by the vehicle outer side holding lip 26 and the vehicle inner side holding lip 27 of the trim portion 20. Further, the joint portion between the front end 21 a of the outer side wall 21 of the trim portion 20, the first root portion 32 of the hollow seal portion 30, and the outer side wall 21 is attached to the outer panel 4 of the vehicle body. For this reason, the position of the hollow seal portion 30 is determined, and the bulging portion 2a of the door 2 comes into contact with each other accurately.

  In addition, when the sealer 22a is enclosed inside the bottom wall 22 of the trim part 20, the tip of the flange 5 can enter the sealer 22a, so that the sealing performance between the flange 5 and the trim part 20 is improved. be able to. Further, when the trim portion 20 is attached to the flange 5, the attachment is completed by bringing the tip 21a of the vehicle outer side wall 21 of the trim portion 20 into contact with the outer panel 4 of the opening edge 1a. Thereby, insufficient mounting of the trim part 20 can be prevented.

  When the front end 21a of the vehicle outer side wall 21 of the trim portion 20 contacts the outer panel 4 of the opening edge 1a, the opening trim weather strip 10 is in close contact with the outer panel 4 at the inner surface of the vehicle outer side wall 21 and at the front end 21a. Since it abuts, the holding of the hollow seal portion 30 is further stabilized.

  Further, since the opening trim weather strip 10 attached to the corner portion of the opening edge 1a is bent along the corner, the hollow seal portion 30 is pulled toward the bottom wall 22 of the trim portion 20 by bending, but the first root Since the rigidity of the part 32 is formed high, the first root part 32 is not greatly deformed. Therefore, the first root portion 32 of the hollow seal portion 30 does not leave the outer panel 4 even at the corner portion. Therefore, even when the contact portion between the hollow seal portion 30 and the outer panel 4 is viewed from the outside of the vehicle when the door 2 is opened, the rear trim portion 20 and the flange 5 are not seen, and the first base portion 32 is the outer panel. There are not many gaps with 4 and it looks good.

  Further, when the door 2 is closed, when the bulging portion 2 a of the door 2 comes into contact with the arc portion 34 of the hollow seal portion 30, the arc portion 34 is pulled in the direction of the bottom wall 22 of the trim portion 20 due to the opening / closing locus of the door 2. However, the thick first base portion 32 prevents the hollow seal portion 30 from being deformed, thereby ensuring a sealing property. Further, since the distance between the tip of the bulging portion 2a of the door 2 and the outer side wall 21 is greater than the height of the tip of the first base portion 32, the hollow seal portion 30 bulges the door 2 when the door 2 is closed. Even if it is pushed by the portion 2a, there is a sufficient distance from the tip of the first root portion 32, so that the so-called bottom does not settle when the door is closed, the feeling when the door is closed is good, and the door is lightly closed. be able to.

It is a perspective view in the state where the door of the car was opened. It is a front view of the opening trim weather strip which is an embodiment of the present invention. It is sectional drawing along the AA in FIG. 2 of the opening trim weather strip which is embodiment of this invention. It is a partially cutaway view of a conventional opening trim weather strip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 1a Opening edge 2 Door 4 Outer panel 5 Flange 10 Opening trim weather strip 20 Trim part 21 Car outer side wall 22 Bottom wall 23 Car inner side wall 30 Hollow seal part 32 1st base part 33 2nd base part 34 Arc part

Claims (6)

An automotive opening trim weather strip that seals between an opening edge of a vehicle body and a door,
The opening trim weather strip has a trim portion attached to the outer panel of the opening edge and a flange of the inner panel, and a hollow seal portion for sealing between the opening edge and the door,
The trim part has a substantially U-shaped cross section, and includes a vehicle outer side wall, a bottom wall, and a vehicle inner side wall,
The hollow seal portion is a solid that extends integrally from a position slightly closer to the opening side tip from a connecting portion between the outer side wall outer surface of the opening end of the trim portion and the bottom wall of the outer side wall outer surface of the trim portion. Two root parts made of a material, and a circular arc part made of a sponge material, both ends of which form a hollow part continuously with the two root parts,
Of the two root portions, the first root portion located at the opening-side tip of the trim portion is positioned slightly closer to the opening-side tip than the connecting portion with the bottom wall of the trim portion. An opening trim weather strip for an automobile, wherein the first base portion extends from the outer side wall of the outer panel substantially parallel to the surface of the base portion of the flange of the outer panel. . An automotive opening trim weather strip that seals between an opening edge of a vehicle body and a door,
The opening trim weather strip has a trim portion attached to the outer panel of the opening edge and a flange of the inner panel, and a hollow seal portion for sealing between the opening edge and the door,
The trim part has a substantially U-shaped cross section, and includes a vehicle outer side wall, a bottom wall, and a vehicle inner side wall,
The hollow seal portion is a solid that extends integrally from a position slightly closer to the opening side tip from a connecting portion between the outer side wall outer surface of the opening end of the trim portion and the bottom wall of the outer side wall outer surface of the trim portion. Two root parts made of a material, and a circular arc part made of a sponge material, both ends of which form a hollow part continuously with the two root parts,
Of the two root portions, the first root portion located at the opening-side tip of the trim portion is positioned slightly closer to the opening-side tip than the connecting portion with the bottom wall of the trim portion. The outer surface of the joint of the outer side wall of the vehicle and the first root portion is contacted with the surface of the root portion of the flange of the outer panel when the trim portion is attached to the flange. Opening trim weather strip for automobiles, characterized by contact.   When the trim portion is mounted on the vehicle body, the outer surface of the joint portion between the first root portion and the tip of the vehicle outer side wall abuts on the outer panel, and the space between the first root portion and the outer panel is between The opening trim weather strip for automobiles according to claim 1 or 2, wherein the opening trim trim strip for automobiles is configured to have a slight gap that gradually expands toward the outside of the first root portion.   The distance between the front-end | tip of a bulging part of a door and the said vehicle outer side wall is larger than the height to the front-end | tip of a said 1st base part, when the said trim part is mounted to a vehicle body and the said door is closed. An opening trim weather strip for an automobile according to any one of the above.   5. The core material embedded in the trim portion includes a substantially strip-shaped small piece and a connecting portion that connects the small piece at a portion embedded in the bottom wall. 6. Opening trim weather strip for automobiles.   The opening trim weather strip for automobiles according to any one of claims 1 to 5, wherein the surface of the arc portion made of a sponge material is covered with a thin film made of a solid material.

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