JP2013129392A - Opening seal for automobile and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening seal for automobile which greatly reduces crease wrinkles formed on a hollow seal part while being assembled to a corner part projecting toward the inner periphery side, and to provide a method of manufacturing the same.SOLUTION: A non-thermo-fusible yarn 221 of a wire core 20 embedded in an opening seal 10 for automobiles on the outer-cabin side is arranged in a range R1 from an edge 21a on the outer-cabin side of a wire body 21 which is bent in a rough U-shape to a position 52 where a straight line 101 which connects a point 51 at the outermost circumferential door side at the cave side of the hollow seal part 12 with the position of the inner-cabin side corner part 21d of the wire body 21 intersects with the outer-cabin side of the wire body 21, while a non-thermo-fusible yarn 222 on the inner-cabin side is arranged in a range R2 from a position 53 at which a straight line 102 which connects the point 51 at the outermost circumferential door side at the cave side of the hollow seal part 12 with a position of the non-thermo-fusible yarn 221 on the outer-cabin side intersects with a position of the inner-cabin side of the wire body 21 to the inner-cabin side corner part 21d of the wire body 21.

Description

  The present invention is mounted along the periphery of a door opening of an automobile body, and elastically contacts the door when the door is closed to seal a gap between the body and the door. A wire core material is attached to the mounting base to increase rigidity. The present invention relates to an embedded automotive opening seal and a method for manufacturing the automotive opening seal.

As shown in FIGS. 9 and 10, the body 1 is attached to a flange 3 provided along the periphery of the opening of the door 2 on the body 1 side of the automobile, and is elastically contacted with the door 2 when the door 2 is closed. 2 is known in which a wire core member 20 is embedded in an automotive opening seal 10 that seals the gap between the two (see, for example, Patent Documents 1 and 2).
FIG. 9 is a side view of an automobile to which an automobile opening seal 10 is attached. FIG. 10 shows an automobile opening seal 10 according to a conventional example, and is an enlarged perspective view of a main part at reference numeral 100 in FIG. .

JP-A-3-82519 JP 2004-322768 A

  The opening seal 10 for an automobile is provided on a vehicle outer side of the mounting base 11 and a mounting base 11 having a substantially U-shaped cross section composed of a connecting wall 11c connecting the outer side wall 11a, the inner side wall 11b, and both side walls 11a and 11b. In addition, a hollow seal portion 12 and a claw portion 13 that is provided inside the vehicle interior side wall 11b of the mounting base portion 11 and elastically contacts and holds the flange 3 are provided. A plurality of protrusions 14 that elastically contact the flange 3 are provided on the inner side of the vehicle outer side wall 11 a of the mounting base 11, and a lip portion 15 is provided on the inner side of the mounting base 11. A covering material 16 that enhances the decorativeness is provided from the lip portion 15 to the surface of the connecting wall 11c of the mounting base portion 11 to improve the appearance from the inside of the vehicle.

And the wire core material 20 embedded in the mounting base 11 of the opening seal 10 for automobiles, as shown in FIGS. 11 and 12, is a wire body 21 formed into a wave shape by bending a single wire continuously. And the yarns 22 and 23 that are partially connected to the wire main body 21 and suppress the elongation in the longitudinal direction of the wire main body 21, and finally the U-shape of one wire continues in the same direction at constant intervals Thus, it is embedded in the attachment base 11 along the longitudinal direction in the state bent in the substantially U shape.
As shown in FIGS. 10 and 11, the yarn that suppresses the elongation in the longitudinal direction of the wire body 21 is not melted at the vulcanization set temperature when the rubber component is vulcanized during the production of the automotive opening seal 10. A plurality of non-heat-melting yarns 22 (six in FIG. 10 and FIG. 11), or a non-heat-melting yarn 22 that does not melt at the vulcanization set temperature as shown in FIG. Is a combination of hot-melt yarns 23 that melt at the set temperature for vulcanization (in FIG. 12, two non-heat-melt yarns 22 and six hot-melt yarns 23).
According to this, when the opening seal 10 for automobiles is extruded and manufactured, it is prevented from being unnecessarily stretched, and the rigidity of the mounting base 11 is increased after molding, so that the assembling force on the flange 3 is increased. It is done.

  However, in such an automotive opening seal 10 formed by extrusion, the strength is greatly increased as compared with a portion where the wire core material 20 is not provided with the non-thermally melted yarn 22, so that the entire length including the corner portion is formed. In such a case, there is a problem that followability at the corner portion is poor.

That is, when the door 2 is closed, the automobile opening seal 10 is attached along the corner portion X that protrudes toward the outer peripheral side like the peripheral edge of the door opening that opposes the upper and lower portions of the door 2 in the front-rear direction. As shown in FIG. 10, for example, as shown in FIG. 10, the opening 11 of the automobile opening seal 10 is provided along a corner X of the door opening peripheral portion facing the front lower portion of the door (front door) 2. At the portion where the attachment base 11 is curved and attached, the non-thermally melted yarn 22 (22a) embedded on the most open end side of the vehicle outer side wall 11a of the attachment base 11 and the vehicle inner side wall 11b of the attachment base 11 are provided. The straight line 200 connecting the non-thermally melted yarn 22 (22b) embedded most on the open end side extends to the outer peripheral side of the hollow seal portion 12 on the outer peripheral side from the position 201 where the hollow seal portion 12 intersects. That force acts, wrinkles 202 fold since contracting force acts on the inner circumferential side to the reverse is likely to occur.
On the other hand, the opening seal 10 for the automobile is attached along the corner portion Y protruding toward the inner peripheral side as above the corner portion X at the peripheral edge of the door opening facing the lower front portion of the door (front door) 2. In the portion where the base 11 is curved and attached, the non-thermally melted yarn 22 (22a) embedded most on the open end side of the vehicle outer side wall 11a of the attachment base 11 and the vehicle inner side wall 11b of the attachment base 11 are the most. The straight line 200 connecting the non-thermally melted yarn 22 (22b) embedded on the open end side has a force extending toward the inner peripheral side from the position 201 where the hollow seal portion 12 intersects, and conversely, the hollow seal portion is provided on the outer peripheral side. Since the force which shrinks to 12 works, it is easy to generate the crease 203 on the surface of the hollow seal part 12.

When the hollow seal portion 12 is stretched or contracted in this way, the assembled state of the automotive opening seal 10 is not stabilized, and thus there is a problem that the appearance is deteriorated and the sealing function is deteriorated.
In particular, in a portion where the mounting base 11 of the automobile opening seal 10 is curved and attached along the corner Y that protrudes toward the inner peripheral side, the mounting base along the corner X that protrudes toward the outer peripheral side. Compared with the part where 11 is curved and attached, the crease 203 is generated over a wide region n on the sealing surface of the hollow seal portion 12, and the problem is remarkable.

  In the invention described in Patent Document 1, as shown in FIG. 12, the wire core material embedded corresponding to the vehicle outer side wall 11a, the vehicle inner side wall 11b, and the connecting wall 11c constituting the mounting base portion 11 is used. At least one side of each is connected with a yarn that is thermally deteriorated at the vulcanization set temperature and a yarn that is not thermally deteriorated (non-heat-melted yarn), so that it has excellent strength against tensile force during extrusion molding. However, since the arrangement of the yarn that does not deteriorate with heat at the vulcanization set temperature is roughly one side at a time, the expansion and contraction that occurs in the hollow seal portion 12 particularly when the automobile opening seal 10 is assembled at the corner portion. It cannot be said that the state is sufficiently reduced.

  In the invention described in Patent Document 2, the high melting point yarn (non-thermally melted yarn) is arranged at least in the portion of the wire main body side wall 11b located near the connecting wall 11c. Since it is a technology related to a weather strip that is attached to the body of an automobile having a curve that bulges in the vehicle width direction, the expansion / contraction state that occurs in the hollow seal portion 12 in a state where the opening seal 10 for an automobile is assembled at a corner portion. It does not reduce it.

  Accordingly, an object of the present invention is to provide an automotive opening seal that greatly reduces creases generated in the hollow seal portion particularly when attached to a corner portion protruding toward the inner peripheral side, and a method for manufacturing the same. There is to do.

In order to achieve the above object, an automobile opening seal invention according to claim 1 is attached to a flange (3) provided along the periphery of an opening of a door (2) of a body (1) and A corner portion (Y) that protrudes toward the inner peripheral side with a substantially U-shaped cross section comprising a connecting wall (11c) that connects the side wall (11a), the vehicle inner side wall (11b), and both side walls (11a, 11b). An attachment base (11) having a portion curved along;
The mounting base (11) extends from the inner side position and the outer side position of the vehicle outer side wall (11a) toward the inner peripheral side and the outer peripheral side of the door, and bulges outward and curves toward the vehicle outer side. 2) a hollow seal portion (12) that elastically contacts the inside and outside of the vehicle;
One or a plurality of claw portions (13) provided inside the vehicle inner side wall (11b) of the mounting base portion (11) and held in elastic contact with the flange (3);
A wire body (21) formed into a wave shape by continuously bending a single wire, and partially connected to the wire body (21) while suppressing the longitudinal extension of the wire body (21) The non-thermally melted yarn (22) that extends substantially linearly in the direction and does not melt at the vulcanization set temperature is embedded in the mounting base (11) along the longitudinal direction in a state of being bent into a substantially U shape. An automotive opening seal (10) comprising a wire core material (20) comprising:
At least two non-heat-melting yarns (22) of the wire core material (20) are provided on the vehicle outer side and the vehicle inner side,
The non-heat-melting yarn (221) on the outside of the vehicle is the outermost door outer periphery on the hollow side of the hollow seal portion (12) from the vehicle outer end (21a) of the wire body (21) bent into the substantially U shape. A range (R1) up to a position (52) where a straight line (101) connecting the point (51) on the side and the position of the vehicle interior corner (21d) of the wire body (21) intersects the vehicle exterior of the wire body (21) )
A straight line connecting the non-heat-melting yarn (222) on the inner side of the vehicle to the position of the point (51) on the outermost side of the door on the cavity side of the hollow seal portion (12) and the position of the non-heat-melting yarn (221) on the outer side of the vehicle (102) is arranged in a range (R2) from the position (53) where the wire body (21) intersects the vehicle interior side to the position of the vehicle interior corner (21d) of the wire body (21). .

According to a second aspect of the present invention, there is provided a method for manufacturing an automobile opening seal, which is attached to a flange (3) provided along a periphery of an opening of a door (2) of a body (1), and is provided with an outer side wall (11a). And a substantially U-shaped cross section consisting of a connecting wall (11c) connecting the vehicle inner side wall (11b) and both side walls (11a, 11b), and curved along a corner portion (Y) protruding toward the inner peripheral side A mounting base (11) having a site;
The mounting base (11) extends from the inner side position and the outer side position of the vehicle outer side wall (11a) toward the inner peripheral side and the outer peripheral side of the door, and bulges outward and curves toward the vehicle outer side. 2) a hollow seal portion (12) that elastically contacts the inside and outside of the vehicle;
One or a plurality of claw portions (13) provided inside the vehicle inner side wall (11b) of the mounting base portion (11) and held in elastic contact with the flange (3);
A wire body (21) formed into a wave shape by continuously bending a single wire, and partially connected to the wire body (21) while suppressing the longitudinal extension of the wire body (21) The non-thermally melted yarn (22) that extends substantially linearly in the direction and does not melt at the vulcanization set temperature is embedded in the mounting base (11) along the longitudinal direction in a state of being bent into a substantially U shape. A manufacturing method for extruding and vulcanizing an automotive opening seal (10) comprising a wire core material (20) comprising:
At least two non-heat-melting yarns (22) of the wire core material (20) are provided on the vehicle outer side and the vehicle inner side,
The non-heat-melting yarn (221) on the outside of the vehicle is the outermost door outer periphery on the hollow side of the hollow seal portion (12) from the vehicle outer end (21a) of the wire body (21) bent into the substantially U shape. A range (R1) up to a position (52) where a straight line (101) connecting the point (51) on the side and the position of the vehicle interior corner (21d) of the wire body (21) intersects the vehicle exterior of the wire body (21) )
A straight line connecting the non-heat-melting yarn (222) on the inner side of the vehicle and the point (51) on the outermost side of the door on the cavity side of the hollow seal portion (12) and the position of the non-heat-melting yarn (221) on the outer side of the vehicle (102) is arranged in a range (R2) from the position (53) where the wire body (21) intersects the vehicle interior side to the position of the vehicle interior corner (21d) of the wire body (21). .

  Furthermore, in the invention according to claim 3, a member (61) having a specific gravity higher than that of the material of the mounting base (11) is provided integrally or separately at the open end of the vehicle outer side wall (11a). It is characterized by.

  According to a fourth aspect of the present invention, at least the non-heat-melting yarn (22) is provided between the vehicle outer corner portion (21c) and the vehicle inner corner portion (21d) (21e) of the wire body (21). It is characterized by not being arranged.

  Further, in the invention according to claim 5, the wire body (21) is melted at the vulcanization set temperature between the vehicle outer corner portion (21c) and the vehicle inner corner portion (21d) (21e) in the longitudinal direction. The hot melt yarn (23) extending substantially linearly is not arranged.

  Further, in the invention according to claim 6, another non-heat-melting yarn (223) is arranged on the vehicle-side corner (21 d) side of the vehicle-side side wall (11 b) from the arrangement of the non-heat-melting yarn (222) on the vehicle-side. It is characterized by arranging.

  Note that symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and modes for carrying out the invention described later.

  According to the opening seal for automobiles of the present invention and the manufacturing method thereof, the wavy wire body is not melted at the vulcanization set temperature at the mounting base attached to the flange provided along the periphery of the door opening of the body. Since the wire core material connected by the hot melt yarn is embedded, the non-heat melt yarn remains as it is without being melted when the opening seal for automobiles is vulcanized and extruded. Therefore, even if the wire core material is produced with a strong force when the automotive opening seal is extruded, it is prevented that the automotive opening seal is stretched more than necessary together with the wire core material due to the function of the non-thermally melted yarn. The In addition, after the molding, the rigidity of the mounting base is increased, and the assembly force to the flange is increased.

Then, at least two non-thermal melt yarns are provided on the vehicle outer side and the vehicle inner side, and the non-heat melt yarn on the vehicle outer side is connected to the cavity side of the hollow seal portion from the vehicle outer end portion of the wire body bent in a substantially U shape. The straight line connecting the point on the outer periphery of the door and the position of the inside corner of the wire body intersects with the position where the wire body intersects the outside of the wire body, and the non-thermally melted yarn on the inside of the vehicle is substantially U-shaped. In the wire body bent into the shape, from the position where the straight line connecting the point of the door outermost side on the cavity side of the hollow seal part and the position of the non-heat-melting yarn on the outside of the vehicle intersects the inside of the wire body, Since it is arranged in the range up to the position of the inside corner of the car, the straight line connecting the position of the non-heat molten yarn on the outside of the vehicle and the position of the non-heat molten yarn on the inside of the car is directed from the inside of the door toward the outside of the car from the inside of the door. Outer peripheral side (from the connecting wall side of the mounting base It can be tilted toward the mouth portion side).
The position where the inclined straight line is extended and intersected with the hollow seal portion is compared with the conventional example (FIG. 10) from the inner peripheral side of the door to the outer peripheral side (from the connecting wall side of the mounting base to the opening side). Therefore, in a region where the opening seal for automobiles is attached along the corner portion that protrudes toward the inner peripheral side, a region where stress contracting against the seal surface of the hollow seal portion works is a conventional example (FIG. 10). ) Is significantly narrower than the region in the case of. As a result, generation of creases on the sealing surface of the hollow seal portion can be suppressed, so that an automotive opening seal having excellent sealing properties can be provided.

In addition, by inclining a straight line connecting the position of the non-heat molten yarn on the outside of the vehicle and the position of the non-heat molten yarn on the inside of the vehicle, the tightening force from the vehicle inner side wall side of the mounting base to the flange increases and is provided on the vehicle inner side wall side. The flanges can be sufficiently held by the formed claw portions.
Thereby, the opening seal for automobiles can be assembled in a stable state at the body-side corner portion of the automobile, and the stable state can be maintained after the assembly.

  Further, according to the present invention, a massive member having a specific gravity higher than that of the material of the mounting base is integrally or separately formed at the open end of the outer side wall of the mounting base. The rigidity on the open end side is increased. Thereby, the followability of the corner part in the site | part of the opening seal for motor vehicles attached along the corner part improves.

  In addition, according to the present invention, since at least the non-hot melt yarn is not arranged between the vehicle outer corner portion and the vehicle inner corner portion of the wire main body, or further, no heat melt yarn is arranged. When the door is closed from the inside of the vehicle toward the outside of the vehicle, the straight line connecting the position of the non-heat molten yarn on the outside of the vehicle and the non-heat molten yarn on the inside of the vehicle It can be reliably tilted from the wall side to the opening side.

  Further, according to the present invention, since another non-heat-melting yarn is disposed on the vehicle interior corner side of the vehicle-side side wall from the arrangement of the non-heat-melting yarn inside the vehicle, it can withstand a stronger tensile force before vulcanization. be able to.

FIG. 10 is a partial cross-sectional enlarged perspective view of a portion indicated by 100 in FIG. 9, showing a state in which an automobile opening seal according to an embodiment of the present invention is attached. It is an expanded sectional view which shows the opening seal for motor vehicles shown in FIG. FIG. 3 shows the wire core shown in FIG. 2, (a) is a plan view showing a state before the wire core is bent, and (b) is a cross section showing a state after the wire core is bent. FIG. It is sectional drawing which shows another opening seal for motor vehicles based on embodiment of this invention. It is a block diagram which shows the manufacturing process of the opening seal for motor vehicles shown in FIG. FIG. 5 shows a state in each section shown in FIG. 5, (a) is a plan view and a sectional view of the wire core material in the section A, (b) is a sectional view of the wire core material in the section B, ( c) is a sectional view of the opening seal for automobiles in section C, and (d) is a sectional view of the opening seal for automobiles in section D. It is sectional drawing which shows another another automobile opening seal which concerns on embodiment of this invention. It is an external appearance perspective view of an open car. 1 is an external side view of a vehicle. FIG. 10 is a partially sectional enlarged perspective view of a portion indicated by 100 in FIG. 9, showing a state where an automobile opening seal according to a conventional example is attached. FIG. 11 shows a state before the wire core material embedded in the automobile opening seal shown in FIG. 10 is bent, (a) is a plan view, and (b) is a cross-sectional view. The state before another wire core material embed | buried under the opening seal for motor vehicles shown in FIG. 10 is bent is shown, (a) is a top view, (b) is sectional drawing.

  With reference to FIG. 1 thru | or FIG. 3, the opening seal 10 for motor vehicles based on embodiment of this invention is demonstrated. FIG. 1 shows a state in which an automobile opening seal according to an embodiment of the present invention is attached, and corresponds to a partially sectional enlarged perspective view of a portion indicated by 100 in FIG. 2 shows an enlarged cross-sectional view of the automotive opening seal 10 according to the embodiment of the present invention shown in FIG. 1, and FIG. 3 shows a cross-sectional view of the wire core member 21 shown in FIG. The same parts as those shown in the conventional example are denoted by the same reference numerals.

As shown in FIG. 9, the opening seal 10 for an automobile according to the embodiment of the present invention is provided over the entire periphery of the opening of the door 2 of the body 1, and the door 2 is closed when the door (front door) 2 is closed. Mounted not only on the corner portion X projecting toward the outer periphery side, but also along the corner portion Y projecting toward the inner periphery side, such as the peripheral edge of the door opening facing the upper part in the front-rear direction and the lower part in the front-rear direction. It is what Here, the front door 2 will be described as an example, but the present invention can also be applied to a rear door.
The automotive opening seal 10 according to the embodiment of the present invention mainly includes an attachment base portion 11, a hollow seal portion 12, a claw portion 13, and a wire core material 20.

The mounting base portion 11 has a substantially U-shaped cross section including a connecting wall 11c that connects the vehicle outer side wall 11a, the vehicle inner side wall 11b, and both side walls 11a and 11b, and is shown in FIGS. Like the thing, it attaches to the flange 3 so that the flange 3 provided along the door 2 opening periphery of the body 1 may be inserted. The flange 3 extends toward the inner peripheral side (inward) along the periphery of the opening of the door 2, spreads outward at the four corners X protruding toward the outer peripheral side, and above the lower front portion of the door 2. In the corner portion Y protruding toward the inner peripheral side as shown in FIG.
As a result, as shown in FIG. 1, the mounting base 11 of the automotive opening seal 10 is curved along the corner X projecting toward the outer peripheral side at the periphery of the door opening facing the front lower portion of the door 2. A portion where the attachment base 11 of the automobile opening seal 10 is curved and attached is provided continuously along the corner portion Y protruding toward the inner peripheral side above the attached portion.

  In addition, a massive member 61 having a specific gravity higher than that of the material of the mounting base 11, for example, a high modulus material or a covering material, is integrally formed at the open end of the vehicle outer side wall 11 a of the mounting base 11. As for the range in which the massive member 61 is provided, at least a part thereof is at the same position as the position P where the base 12b on the outer peripheral side of the hollow seal portion 12 contacts the vehicle outer side wall 11a, or as shown in FIG. It is on the outer periphery side. Moreover, it exists in the opening side rather than the vehicle outer side edge part 21a of the wire main body 21. FIG.

The hollow seal portion 12 is positioned on the inner side of the vehicle outer side wall 11a of the mounting base 11 (on the side opposite to the open end side of the vehicle outer side wall 11a, that is, on the side of the connecting wall 11c; FIG. 2 shows the vehicle outer side wall 11a). The right side position in FIG. 2) and the outer side position (position on the open end side of the vehicle outer side wall 11a; the position on the left side in the vehicle outer side wall 11a in FIG. 2) from the root toward the inner peripheral side and outer peripheral side of the door 2, respectively. 12a and 12b extend and bulge and curve toward the outside of the vehicle. The base 12a on the inner peripheral side of the hollow seal portion 12 is erected from the inner side position of the outer side wall 11a toward the vehicle outer side, and is bent in a sectional shape so as to bend toward the inner peripheral side (right side in FIG. 2). It extends in an L shape. Further, the base 12b on the outer peripheral side of the hollow seal portion 12 extends in a substantially linear cross-sectional shape from the outer side position of the outer side wall 11a toward the outer side of the vehicle 2 and toward the outer peripheral side of the door 2. When the door 2 is closed, the hollow seal portion 12 elastically contacts the door 2 to seal the inside and outside of the vehicle.
Further, the claw portion 13 is provided so as to extend from the inner side (vehicle outer side) of the vehicle inner side wall 11 b of the mounting base 11 toward the connecting wall 11 c side, and a plurality of claw portions 13 provided on the inner side of the vehicle outer side wall 11 a of the mounting base 11. The protrusions 14 (two in this case) are elastically held so as to sandwich the flange 3. A lip portion 15 is provided on the vehicle inner side of the mounting base portion 11, and a covering material 16 is provided from the lip portion 15 to the surface of the connecting wall 11 c of the mounting base portion 11 to enhance the decorativeness. It looks good from the inside.

As shown in FIG. 3A, the wire core material 20 includes a wire body 21 that is formed by bending a single wire continuously to form a wave shape, and a wire body 21 that is partially connected to the wire body 21. The outer corner portion of the vehicle comprises a yarn 22 that suppresses elongation in the longitudinal direction, and finally, as shown in FIG. 3 (b), one wire has a U-shape that continues in the same direction at regular intervals. It embeds along the longitudinal direction in the attachment base 11 in the state bent by the substantially U shape centering on 21c and the vehicle inside corner part 21d.
The yarn 22 that suppresses the elongation in the longitudinal direction of the wire body 21 is a non-thermally melted yarn that does not melt at the vulcanization set temperature when the rubber component is vulcanized when the opening seal 10 for an automobile is manufactured. Each has one, two in total, 221, 222.

  The position where the non-thermal melt yarn 221 on the vehicle exterior side and the non-heat melt yarn 222 on the vehicle interior side are arranged is specifically defined as follows.

First, as shown in FIG. 1, the non-thermally melted yarn 221 on the outside of the vehicle was bent into a substantially U shape in a state where the wire main body 21 was bent into a substantially U shape and embedded in the attachment base 11. A straight line 101 connecting the point 51 on the outer peripheral side of the door on the cavity side of the hollow seal portion 12 and the position of the vehicle interior corner portion 21d of the wire main body 21 from the vehicle outer end portion 21a of the wire main body 21 is the vehicle outer side of the wire main body 21. It is stipulated that it is arranged in a range R1 up to a position 52 where it intersects.
In the case of an automotive opening seal 10 of a size that is generally attached, the non-thermal melt yarn 221 on the outside of the vehicle is within a range of approximately 1.5 mm (millimeters) from the end portion 21 a of the wire body 21 on the outside of the vehicle.

Next, as shown in FIG. 1, the non-thermally melted yarn 222 on the vehicle interior side is a hollow side of the hollow seal portion 12 in a state where the wire main body 21 is bent into a substantially U shape and embedded in the attachment base portion 11. From the position 53 where the straight line 102 connecting the position 51 of the door outermost side and the position of the non-heat-melting yarn 221 on the outside of the vehicle intersects the inside of the wire body 21 to the position of the inside corner 21d of the wire body 21 It is stipulated to be arranged in the range R2.
In the case of an automotive opening seal 10 of a size that is generally attached, the non-thermally melted yarn 222 on the vehicle interior side is approximately 2.0 mm (millimeters) from the vehicle interior corner portion 21d of the wire body 21 to the vehicle interior end portion 21b side. Within the range.

  In addition, 21e between the vehicle outside corner part 21c and the vehicle inside corner part 21d of the wire main body 21 is set as the prohibition area | region which does not arrange | position the non-heat-melting yarn 22. FIG. Furthermore, it is more preferable not to arrange the yarn not only for the non-heat-melting yarn 22 but also for the heat-melting yarn 23 that is melted at the vulcanization set temperature and extends substantially linearly in the longitudinal direction.

In this way, in addition to the arrangement of the non-thermal melt yarn 221 and the non-heat melt yarn 222 inside the vehicle, as shown in FIG. 4, the vehicle inner end 21b extends beyond the range of R2 on the vehicle interior. When the yarn is arranged on the side, the hot melt yarn 23 which is melted at the vulcanization set temperature and extends substantially linearly in the longitudinal direction may be arranged and partially connected. In addition, compared with what was shown in FIG. 2, the thing which moved the position of the non-heat-melting yarn 222 inside a vehicle a little to the vehicle interior corner part 21d side of the wire main body 21 was shown. Here, in a state where the wire main body 21 is bent in a substantially U shape and embedded in the attachment base 11, the non-heat melt yarn 223 and the heat melt yarn 23 are located on the vehicle interior side more than the position where the non-heat melt yarn 222 is disposed. In addition, two wires are additionally arranged on the vehicle interior corner 21d side of the wire body 21, but only the non-thermal melt yarn 223 or only the heat melt yarn 23 may be additionally arranged, or the arrangement position of the non-heat melt yarn 222 In addition, a plurality of non-heat-melting yarns 22 and heat-melting yarns 23 can be arranged as far as the vehicle interior corner portion 21d of the wire body 21.
According to this, the opening seal 10 for automobiles is provided by disposing the non-thermal melt yarn 22 (223) and the heat melt yarn 23 closer to the vehicle interior corner 21d side of the wire body 21 than the arrangement position of the non-heat melt yarn 222. Even if the wire core member 20 is manufactured while being pulled with a strong force when extrusion molding is performed, the strength against the pulling force is improved, and the opening seal 10 for an automobile is prevented from being stretched more than necessary.
Since the hot melt yarn 23 disappears by vulcanization, it does not cause the hollow seal portion 12 to expand and contract when the automotive opening seal 10 is assembled to the body-side corner portion of the vehicle.

Here, the non-thermally melted yarn 22 (221, 222, 223) is, for example, a melting point of 230 to 280 degrees (° C.), and even during extrusion molding (about 100 degrees (° C.)), It is a thread that does not melt even at 250 degrees (° C.), and is made of a polyester resin (eg, PET (polyethylene terephthalate)) or a polyamide resin (eg, 6 nylon, 6-6 nylon).
The hot melt yarn 23 has, for example, a melting point of 100 to 160 degrees (° C.) and does not melt at the time of extrusion molding (about 100 degrees (° C.)), but a vulcanizing furnace (200 to 250 degrees (° C.)). Then, it is a thread that melts, and one made of a polyolefin resin (eg, PP (polypropylene), PE (polyethylene)) can be considered.
Moreover, although the opening seal 10 for motor vehicles is comprised from rubber materials, such as EPDM, you may be comprised from another rubber material. Further, although a sponge material (for example, EPDM sponge) is used for the seal surface side of the hollow seal portion 12 and a solid material (for example, EPDM solid) is used for the other portions, it is not particularly limited.

Next, an example of a method for manufacturing the automobile opening seal 10 shown in FIG. 4 will be described with reference to FIGS.
First, in the wire carrier (W / C) supply process, as shown in FIG. 6A, the wire core material 20 in an unfolded state is fed from the wire carrier (W / C) supply device 41. The wire main body 21 of the wire core member 20 is partially connected in the longitudinal direction by three non-heat-melting yarns 22 (221, 222, 223) and one heat-melting yarn 23.
At this time, as shown in FIG. 4 and FIG. 6 (d), the non-thermally melted yarn 221 is in a state where the wire body 21 is bent into a substantially U shape and embedded in the attachment base 11 (the state of the final product). The point 51 on the outer peripheral side of the door on the hollow side of the hollow seal portion 12 and the position of the vehicle inner corner portion 21d of the wire main body 21 are connected from the vehicle outer end 21a of the wire main body 21 bent into a substantially U shape. It arrange | positions beforehand so that the straight line 101 may become the range R1 to the position 52 which cross | intersects the vehicle outer side of the wire main body 21. FIG.
Further, the non-thermally melted yarn 222 on the vehicle inner side of the wire main body 21 is also in a state where the wire main body 21 is bent into a substantially U shape and embedded in the attachment base 11 as shown in FIGS. 4 and 6 (d). From the position 53 where the straight line 102 connecting the point 51 on the outermost side of the door on the hollow side of the hollow seal portion 12 and the position of the non-heat-melting yarn 221 on the outside of the vehicle intersects the vehicle inside of the wire body 21, the vehicle of the wire body 21 It arrange | positions beforehand so that it may become the range R2 to the position of the inner corner part 21d.

Further, as shown in FIGS. 4 and 6D, the hot melt yarn 23 is also formed inside the wire main body 21 in the state where the wire main body 21 is bent into a substantially U shape and embedded in the attachment base 11. It arrange | positions previously so that it may be located in the vehicle inner side edge part 21b side of the wire main body 21 rather than the arrangement position of the non-heat-melting yarn 222. FIG.
Further, as shown in FIGS. 4 and 6 (d), the non-thermally melted yarn 223 is also formed on the vehicle interior side of the wire main body 21 in a state where the wire main body 21 is bent into a substantially U shape and embedded in the attachment base 11. Thus, it is arranged in advance so as to be located between the arrangement position of the non-heat-melting yarn 222 and the arrangement position of the vehicle interior corner portion 21d.

  Next, in the prevent process, in the prevent apparatus 42, the wire core member 20 in the expanded state is bent at both ends in the cross section to form a dish-shaped cross section as shown in FIG. 6 (b). Note that both ends may be bent, and only one end (one end) may be bent.

Next, in the extrusion process, the cross-section of the mounting base 11 is substantially cross-sectioned along the shape of the wire core 20 prevented into a dish-like cross-sectional shape as shown in FIG. Inside the vulcanizing furnace 44 with the opening wider than the U-shape and the same dish shape (opening approximately 45 degrees left and right wider than the substantially U-shaped cross section), and the wire core 20 is embedded. The automobile opening seal 10 is extruded. At this time, the hollow seal portion 12, the claw portion 13, the projection portion 14, the lip portion 15, and the covering portion 16 are integrally extruded with respect to the mounting base portion 11, and the vehicle outer side wall 11 a of the mounting base portion 11 is opened. A massive member 61 having a specific gravity higher than that of the material of the attachment base 11 is integrally formed at the end.
Further, a take-up machine 45 is provided on the outlet side of the vulcanizing furnace 44, and the wire core material 20 extruded together with the automobile opening seal 10 from the extruder 43 is guided to the vulcanizing furnace 44 while being pulled with a strong force.

  In the vulcanization process, the automotive opening seal 10 is heat-treated in the vulcanization furnace 44 at 200 to 250 degrees (° C.), whereby the rubber component is vulcanized and certain elasticity and strength are ensured. The hot melt yarn 23 melts and disappears when it passes through the vulcanization furnace 44, but the three non-heat melt yarns 221, 222, and 223 do not melt after passing through the vulcanization furnace 44, so The automotive opening seal 10 is not particularly stretched during the vulcanization process.

In the forming machine 46, the vulcanized automotive opening seal 10 is passed through a sizing die, and the opening is narrow so that the mounting base 11 has a substantially U-shaped cross section, as shown in FIG. 6 (d). Is done.
Then, a cooling process etc. are performed and the opening seal 10 for motor vehicles is finally manufactured.

  According to the automotive opening seal 10 manufactured in this way, the corrugated wire body 21 is vulcanized at the set temperature 11 on the attachment base 11 attached to the flange 3 provided along the periphery of the door opening of the body 1. Since the wire core material 20 connected by the non-heat-melting yarn 22 (221, 222, 223) that does not melt is embedded, the non-heat-melting yarn 22 is used when the automotive opening seal 10 is vulcanized and extruded. It remains as it is without being melted. Therefore, even if the wire core material 20 is manufactured while being pulled with a strong force when the opening seal 10 for the automobile is extruded, the opening seal 10 for the automobile is stretched more than necessary together with the wire core material 20 due to the function of the non-thermally melted yarn 22. Is prevented. Further, after molding, the rigidity of the mounting base 11 is increased, and the assembly force to the flange 3 is increased.

Then, at least two non-thermal melt yarns 22 are provided on the vehicle outer side and the vehicle inner side, and the non-heat melt yarn 221 on the vehicle outer side is hollow-sealed from the vehicle outer end 21a of the wire body 21 bent into a substantially U shape. The straight line 101 connecting the point 51 on the outer peripheral side of the door on the cavity side of the portion 12 and the position of the inboard corner portion 21d of the wire body 21 is arranged in a range R1 up to a position 52 where the wire body 21 intersects the outside of the vehicle, In the wire main body 21 in which the non-thermal melt yarn 222 on the inside of the vehicle is bent into a substantially U shape, the position of the point 51 on the outermost side of the door on the cavity side of the hollow seal portion 12 and the position of the non-heat melt yarn 221 on the outside of the vehicle are determined. Since the connected straight line 102 is arranged in a range R2 from a position 53 where the wire main body 21 intersects the vehicle inner side to a position of the vehicle inner corner portion 21d of the wire main body 21, the non-heat-melting yarn 2 on the vehicle outer side is arranged. 1 and the position of the non-heat-melting yarn 222 on the inside of the vehicle, as shown in FIGS. 2 and 4, from the inner side to the outer side of the door 2 toward the outer side of the door 2 (connection of the mounting base 11). It can be inclined from the wall 11c side to the opening side.
As a result, the position where the inclined straight line extends and intersects with the hollow seal portion 12 is compared with the case of the conventional example (FIG. 10) from the inner peripheral side to the outer peripheral side (from the connecting wall 11c side of the mounting base 11). As shown in FIG. 1, the opening seal 10 for an automobile, particularly as shown in FIG. 1, seals the hollow seal portion 12 at a portion attached along the corner portion Y protruding toward the inner peripheral side. The area m where the stress shrinking against the surface works is significantly narrower than the area n in the conventional example (FIG. 10). As a result, the generation of the crease 203 on the sealing surface of the hollow seal portion 12 can be suppressed, and therefore the automotive opening seal 10 having excellent sealing performance can be provided.

  In addition, in the site | part attached along the corner part X which protrudes toward outer peripheral sides, such as each corner part, as shown in FIG. 1, the opening seal 10 for motor vehicles is with respect to the sealing surface of the hollow seal part 12. Although the shrinking stress works, when the door 2 is closed, the door 2 becomes a position facing the inner peripheral side of the door 2 when the opening seal 10 for the vehicle is elastically contacted, and facing the outer peripheral side of the door 2 Since the contracting stress does not work at the position where it is applied, the influence on the sealing function of the hollow seal portion 12 which is the purpose of preventing the entry of water, gas and sound from the outside of the vehicle is small.

Further, by inclining a straight line connecting the positions of the non-thermal melt yarn 221 on the vehicle exterior side and the non-heat melt yarn 222 on the vehicle interior side, the tightening force from the vehicle interior side wall 11b side of the mounting base 11 to the flange 3 increases. The flange 3 can be sufficiently held by the claw portion 13 provided on the inner side wall 11b side.
Thereby, the opening seal 10 for motor vehicles can be assembled | attached in the stable state in the body side corner part of a motor vehicle, and the stable state can be maintained after assembly | attachment.

  Furthermore, since a massive member 61 having a specific gravity higher than that of the material of the mounting base 11 is integrally formed at the open end of the vehicle outer side wall 11a of the mounting base 11, the rigidity on the side of the open end of the vehicle outer side wall 11a. Becomes higher. Thereby, the part of the automotive opening seal 10 attached along the corner part X protruding toward the outer peripheral side and the opening part 10 of the automobile attached along the corner part Y protruding toward the inner peripheral side. The followability of the corner at the part is improved.

As shown in FIG. 2, the positions of the non-thermal melt yarns 222 on the inner side of the vehicle are the positions of the point 51 on the outermost door side on the hollow side of the hollow seal portion 12 and the positions of the non-heat melt yarns 221 on the outer side of the vehicle. When the straight line 102 connecting the two is connected at the position 53 where the inside of the wire main body 21 intersects with the inside of the vehicle, the straight line connecting the position of the non-heat melting yarn 221 on the outside of the vehicle and the non-heat melting yarn 222 on the inside of the vehicle is extended to form a hollow seal. The position intersecting with the portion 12 is the point 51 on the outermost side of the door on the hollow side of the hollow seal portion 12, and the force that shrinks to the hollow seal portion 12 when the automobile opening seal 10 is assembled to the body-side corner portion of the automobile is hollow. Since only the thickness of the seal portion 12 is obtained, creases are hardly generated. And if the point which arrange | positions the non-heat-melting yarn 222 inside a vehicle is located in the position which approached the vehicle interior corner part 21d side of the wire main body 21, the non-heat-melting yarn 221 outside a vehicle and the non-heat-melting yarn 222 inside a vehicle The position where the straight line connecting the positions is extended and intersected with the hollow seal portion 12 is closer to the door outer peripheral side than the point 51 on the outer peripheral side of the door on the hollow side of the hollow seal portion 12, so Absent.
Therefore, when it is attached to the opening seal for automobiles or after the attachment, the necessary amount (number) of the melted hot melt yarn at the time of manufacturing the opening seal for automobiles can be provided at a necessary portion.

  In the present embodiment, a massive member 61 having a specific gravity higher than that of the material of the mounting base 11 is integrally formed at the open end of the vehicle outer side wall 11a of the mounting base 11 so as to improve the followability of the corner portion. However, a separately molded product can be attached later. In addition, as shown in FIG. 7, non-thermal melting of the outside of the vehicle is possible without providing a massive member 61 having a specific gravity higher than that of the material of the attachment base 11 at the open end of the vehicle outer side wall 11 a of the attachment base 11. The part Y of the opening seal 10 for an automobile mounted especially along the corner portion protruding toward the outer peripheral side is obtained simply by arranging the position of the yarn 221 and the non-thermally melted yarn 222 inside the vehicle in the range of R1 and R2, respectively. The shrinkage stress acting on the hollow seal portion 12 can be suppressed.

  Moreover, since the opening seal 10 for automobiles of this embodiment is a structure specialized in the followability with respect to the corner part Y which protrudes toward the inner peripheral side, conversely, it follows the corner part X which protrudes toward the outer peripheral side. Sexuality may be slightly inferior. In order to apply the automotive opening seal 10 of the present embodiment to the corner portion X projecting toward the outer peripheral side, in the case of a normal vehicle, when the radius of curvature of the corner portion X is 50 to 60 mm (millimeters), the mouth opening is performed. It is preferable that the radius of curvature is approximately 70 mm (millimeters) or more because there is a risk of falling. Therefore, the present invention is not limited to the sedan type vehicle as shown in FIG. 9, for example, there is a corner portion at the lower part in the front-rear direction of the periphery of the door opening of the automobile body like an open car as shown in FIG. 8. It is effective to apply the automobile opening seal 10 according to the present embodiment to a case where there is no corner portion with a tight angle at the upper part in the front-rear direction. An enlarged view corresponding to reference numeral 105 in FIG. 8 corresponds to FIG.

DESCRIPTION OF SYMBOLS 1 Body 2 Door 3 Flange 10 Automotive opening seal 11 Mounting base 11a Car outer side wall 11b Car inner side wall 11c Connecting wall 12 Hollow seal part 12a Base 12b Base 13 Claw part 14 Projection part 15 Lip part 16 Cover material 20 Wire core material 21 Wire body 21a Car outer end 21b Car inner end 21c Car outer corner 21d Car inner corner 21e Between car outer corner and car inner corner 22 (22a, 22b, 221, 222, 223) Non-thermal melting Yarn 23 Hot melt yarn 41 Wire carrier (W / C) supply device 42 Prevent device 43 Extruder 44 Vulcanization furnace 45 Take-out machine 46 Forming machine 61 Massive member 100 Main part 101 Straight line 102 Straight line 105 Main part 200 Straight line 202 Folding皺 203 broken 皺 300 straight

Claims (6)

A corner that is attached to a flange provided along the periphery of the door opening of the body and has a substantially U-shaped cross section consisting of a connecting wall that connects the outer side wall, the inner side wall, and both side walls, and protrudes toward the inner peripheral side. A mounting base having a portion curved along the portion;
The mounting base extends from the inner side position and the outer side position of the vehicle outer side wall toward the inner peripheral side and the outer peripheral side of the door, bulges outwardly from the vehicle, and is elastically contacted with the door. A hollow seal portion for sealing;
One or a plurality of claw portions provided inside the vehicle inner side wall of the mounting base and held in elastic contact with the flange;
A wire main body formed into a wave shape by continuously bending a single wire, and a wire body that is partially connected to the wire main body and extends substantially linearly in the longitudinal direction while suppressing the longitudinal extension of the wire main body. An automotive opening seal comprising a non-heat-melting yarn that does not melt at a set temperature, and a wire core embedded in the mounting base along the longitudinal direction in a state of being bent into a substantially U shape,
Provide at least two non-heat-melting yarns of the wire core material on the vehicle exterior and vehicle interior,
From the vehicle outer side end of the wire main body, the non-heat-melted yarn on the vehicle outer side bent into the substantially U shape, the point on the outermost side of the door on the cavity side of the hollow seal portion and the vehicle inner corner of the wire main body In addition to placing the straight line connecting the positions of up to the position where the wire body crosses the outside of the car,
From the position where the straight line connecting the point of the door outermost side on the cavity side of the hollow seal portion and the position of the non-thermal melt yarn on the outside of the vehicle intersects the vehicle inside of the wire body, An opening seal for automobiles, which is arranged in a range up to the position of the inside corner of the wire body. A corner that is attached to a flange provided along the periphery of the door opening of the body and has a substantially U-shaped cross section consisting of a connecting wall that connects the outer side wall, the inner side wall, and both side walls, and protrudes toward the inner peripheral side. A mounting base having a portion curved along the portion;
The mounting base extends from the inner side position and the outer side position of the vehicle outer side wall toward the inner peripheral side and the outer peripheral side of the door, bulges outwardly from the vehicle, and is elastically contacted with the door. A hollow seal portion for sealing;
One or a plurality of claw portions provided inside the vehicle inner side wall of the mounting base and held in elastic contact with the flange;
A wire main body formed into a wave shape by continuously bending a single wire, and a wire body that is partially connected to the wire main body and extends substantially linearly in the longitudinal direction while suppressing the longitudinal extension of the wire main body. An automotive opening seal comprising a non-heat-melting yarn that does not melt at a set temperature and having a wire core embedded along the longitudinal direction of the mounting base in a state of being bent into a substantially U shape is extruded and applied. A production method for sulfur molding,
Provide at least two non-heat-melting yarns of the wire core material on the vehicle exterior and vehicle interior,
From the vehicle outer side end of the wire main body, the non-heat-melted yarn on the vehicle outer side bent into the substantially U shape, the point on the outermost side of the door on the cavity side of the hollow seal portion and the vehicle inner corner of the wire main body In addition to placing the straight line connecting the positions of up to the position where the wire body crosses the outside of the car,
From the position where the straight line connecting the point of the door outermost side on the cavity side of the hollow seal portion and the position of the non-thermal melt yarn on the outside of the vehicle intersects the vehicle inside of the wire body, A method for manufacturing an automotive opening seal, characterized in that the wire body is disposed in a range up to the position of the inside corner of the wire body.   The opening seal for automobiles according to claim 1 or 2, wherein a member having a specific gravity higher than that of the material of the mounting base is provided integrally or separately at the open end of the vehicle outer side wall. Method.   The automobile according to any one of claims 1 to 3, wherein at least the non-thermally melted yarn is not disposed between a vehicle outer corner portion and a vehicle inner corner portion of the wire body. Opening seal and manufacturing method thereof.   The hot melt yarn that melts at a vulcanization set temperature and extends substantially linearly in the longitudinal direction is not disposed between the vehicle outer corner portion and the vehicle inner corner portion of the wire body. The opening seal for motor vehicles as described in any one of thru | or 4 and its manufacturing method.   6. The non-heat-melting yarn according to claim 1, wherein another non-heat-melting yarn is disposed closer to the vehicle interior corner portion of the vehicle interior side wall than the non-thermal melt yarn disposed on the vehicle interior side. Opening seal for automobile and manufacturing method thereof.