JP2008279884A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip excellent in sound-shutting off property, appearance and workability in mounting. <P>SOLUTION: The weather strip for the automobile is mounted to a flange 2 provided along a door opening edge formed on a body 1 of the automobile, and is provided with a mounting base part 11 not buried with a core metal and mounted to the flange 2 by an adhesive tape 15; a seal part 12 provided on a vehicle outer side 40 of the mounting base part 11 and resiliently contacted with a door sash 3; a decoration lip 13 continuously provided from one end part of the mounting base part 11 to an indoor side 30 and having a terminal end abutted on an interior trim 4; and a sponge material 14 of low specific gravity and an approximately tongue-like cross section projectedly provided from an opposed portion to a terminal end surface 2a of the flange 2. The sponge material 14 is obliquely arranged toward an indoor side 30 of the flange 2, and the vehicle outer side surface 14a is resiliently contacted with an indoor side corner part 2b of the terminal end surface 2a of the flange 2 in a line contact form. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a weatherstrip that is mounted along the door opening edge of an automobile.

  This will be described with reference to FIGS. A weather strip 20 is attached to a door opening edge formed in the body 1 of the automobile so as to be in elastic contact with the door sash 3 to ensure a sealing property with the door. For the purpose of reducing the weight and improving the workability of the weather strip 20, the weather strip 20 has a substantially flat plate-like mounting base 11 in which a cored bar is not embedded, and is integrally formed with the mounting base 11 and elastically contacts the door sash 3. Some include a hollow seal portion 12 and a decorative lip portion 13 which is integrally formed with one end portion of the mounting base portion 11 and whose end portion contacts the interior trim 4.

  The weather strip 20 having such a shape is attached by adhering the attachment base 11 to the flange 2 formed on the body 1 with an adhesive tape 15. Further, in order to block sound entering from the direction of the arrow (Y) in FIG. 2 to the portion of the decorative lip portion 13 that faces the end surface 2a of the flange 2, the cross section is rectangular and low in order to improve sound insulation. A sponge material 21 having a specific gravity (specific gravity 0.05 to 0.4) is provided by integral molding. That is, the sponge material 21 is provided in a state in which all gaps formed between the decorative lip portion 13 and the flange 2 are crushed. The entire front surface of the sponge material 21 is brought into close contact with the entire end surface 2a of the flange 2 in a planar shape.

A weather strip that attaches the attachment base to the flange 2 with an adhesive tape is disclosed in, for example, Patent Document 1. For this weather strip, a sponge material is integrally formed to improve sound insulation. Means are not shown.
JP-A-6-48258

  In the conventional weather strip 20 described above, a low specific gravity sponge material 21 is provided on a portion of the decorative lip 13 facing the end surface 2a of the flange 2, and the sponge material 21 is brought into close contact with the end surface 2a of the flange 2. Therefore, the sound insulation can be improved.

  However, the weather strip 20 is provided with the sponge material 21 at a portion facing the end surface 2a of the flange 2 of the decorative lip portion 13, and the entire front surface thereof is in close contact with the end surface 2a of the flange 2 in a surface shape. The following problems arise when variations in molding or assembly of the flange 2 occur, or when variations in the shape of the sponge material 21 occur.

  That is, for example, when the sponge material 21 excessively interferes with the end surface 2a of the flange 2 beyond a predetermined wrap amount due to the occurrence of variation, the decorative lip portion 13 receives a large reaction force. It is pushed back in the direction indicated by the arrow Z and floats up, and a gap G is formed between the interior trim 4 (see FIG. 2). For this reason, the appearance is deteriorated and a work for supplementing it is required, so that there is a problem that the mounting workability is poor. In addition, since sound enters from the gap G between the decorative lip portion 13 and the interior trim 4, there also arises a problem that the sound insulation performance is lowered.

  In order to cope with such a problem, it is conceivable to reduce the predetermined wrap amount by reducing the thickness of the sponge material 21, but in this case, the variation in the flange 2 or the sponge material 21 is opposite to the above case. If this occurs, the sponge material 21 does not adhere to the end face 2a of the flange 2, so that the appearance is similarly lowered and the workability is poor. In addition, since sound enters from between the decorative lip portion 13 and the flange 2, there arises a problem that the sound insulation performance is lowered.

  Such a problem is caused by attaching the weather strip to the flange by using an adhesive tape and an attachment base portion in which the core metal is not embedded. By the way, for example, when attaching a mounting base with a substantially U-shaped cross section with a core metal embedded in the flange, the assembly force against the flange is strong, so the sponge material excessively interferes with the end face of the flange However, these problems do not occur.

  The present invention was devised in view of these problems, and in the weather strip for fixing the mounting base portion in which the core material is not embedded to the flange with an adhesive tape, the sound insulation between the decorative lip portion and the flange is ensured, and It is an object of the present invention to provide a product that is excellent in sound insulation, appearance, and mounting workability by ensuring that the end portion of the decorative lip portion is always in close contact with the interior trim.

  This will be described with reference to FIGS. 1 and 3 to 9. The weather strip 10 for an automobile according to claim 1 is attached to a flange 2 provided along a door opening edge formed in the body 1 of the automobile. Are attached to the flange 2, the seal part 12 provided on the vehicle outer side 40 of the attachment base 11 and elastically contacting the door sash 3, and one end of the attachment base 11 to the indoor side 30. The decorative lip portion 13 having a generally tongue-shaped cross section and the portion of the decorative lip portion 13 facing the end surface 2a of the flange 2 are protruded from the flange 2 and elastically contacted with the flange 2 and have a low specific gravity. Sponge material 14.

  Then, the sponge material 14 is disposed obliquely toward the indoor side 30 of the flange 2, and the vehicle outer side surface 14 a is elastically contacted with the indoor side corner 2 b of the end surface 2 a of the flange 2 in a line contact manner. It will be.

  The weather strip 10 for an automobile according to claim 2 is attached to a flange 2 provided along a door opening edge formed in a body 1 of the automobile, and is attached to the flange 2 by an adhesive tape 15. A mounting base portion 11, a seal portion 12 provided on the vehicle exterior side 40 of the mounting base portion 11 and elastically contacting the door sash 3, and a decoration having a generally tongue-shaped cross section provided continuously from one end portion of the mounting base portion 11 to the indoor side 30. A lip portion 13, and a sponge material 14 of a low specific gravity having a generally tongue-shaped cross section protruding from the interior side 30 of the decorative lip portion 13 from the end face 2 a of the flange 2 and elastically contacting the flange 2. ing.

  Then, the sponge material 14 is disposed obliquely toward the flange 2, and the vehicle outside corner portion 14b is elastically contacted with the indoor side surface 2c of the flange 2 in a line contact manner.

  According to a third aspect of the present invention, in the automobile weather strip 10 according to the first or second aspect of the invention, the decorative lip portion 13 is provided in the longitudinal direction at the corner C provided with the decorative lip portion 13 and the sponge material 14. A string-like tearing cord 16 that is disposed along the flange 2 and is removed by tearing is integrally formed through the thin portion 16a.

  The automobile weather strip according to claim 4 is attached to a flange 2 provided along a door opening edge formed in the body 1 of the automobile, and is attached to the flange 2 by an adhesive tape 15. A mounting base portion 11 having a substantially flat cross section, a hollow seal portion 12 that is provided on the vehicle outer side 40 of the mounting base portion 11 and elastically contacts the door sash 3, and is connected to the indoor side 30 from one end portion of the mounting base portion 11. A decorative lip portion 13 having a substantially tongue-shaped cross section, and a sponge having a low-specific gravity and a substantially tongue-shaped cross section protruding from the interior side 30 of the decorative lip portion 13 from the end face 2a of the flange 2 and elastically contacting the flange 2 And a material 14.

  Then, the sponge material 14 is disposed obliquely toward the flange 2, and the vehicle outer corner 14b is elastically contacted with the indoor side surface 2c of the flange 2 in a line contact manner. Further, a string-shaped tear which is disposed on the decorative lip portion 13 along the longitudinal direction at the corner C where the decorative lip portion 13 and the sponge material 14 are connected, is attached to the flange 2, and is then removed by tearing. The cord 16 is integrally formed through the thin portion 16a.

  In any of the above claims, the specific gravity of the sponge material 14 is about 0.05 to 0.4.

  The weather strip 10 for an automobile according to claim 1 has a low specific gravity sponge material 14 disposed obliquely toward the indoor side 30 of the flange 2, and the vehicle outer side surface 14 a is arranged on the indoor side of the end surface 2 a of the flange 2. Since the corner portion 2b is elastically contacted in a line-contact manner, even if the flange 2 is formed or assembled unevenly, or the sponge material 14 is unevenly formed, sound insulation, appearance, Excellent installation workability.

  That is, for example, even if the amount of wrap between the sponge material 14 and the flange 2 becomes larger than a predetermined amount due to the occurrence of variation, the sponge material 14 is in the form of a tongue piece and elastically contacts the flange 2 in a line contact state. Correspondingly, it can be elastically deformed freely. Accordingly, the sponge material 14 is always in close contact with the flange 2 and exhibits excellent sound insulation.

  Further, since the sponge material 14 is freely elastically deformed, a large reaction force does not act on the decorative lip portion 13, and therefore the end portion thereof does not lift up and always adheres to the interior trim 4. Thereby, the clearance gap G does not generate | occur | produce between the decoration lip | rip part 13 and the interior trim 4, and it is excellent in external appearance property. Moreover, since the invasion of sound from both sides is prevented, the sound insulation can be further improved.

  In addition, since a large reaction force does not act on the decorative lip portion 13, it can be easily and accurately attached to the flange 2, and hence the attachment workability is excellent.

  Even when the wrap amount is smaller than a predetermined amount, the sponge material 14 is brought into close contact with the flange 2 by the corresponding elastic deformation, so that excellent sound insulation, appearance and mounting workability can be exhibited.

  The automobile weather strip 10 according to claim 2 is configured such that the sponge material 14 having a substantially tongue-shaped cross section is disposed obliquely from the indoor side 30 toward the flange 2, and the vehicle outer corner portion 14 b is disposed on the indoor side surface of the flange 2. Since it is elastically contacted with 2c in the form of a line contact, the sponge material 14 is in intimate contact with the flange 2 even if molding variations of the flange 2 occur as in the first aspect of the invention.

  Further, since the decorative lip portion 13 does not receive a large reaction force, the end portion thereof is securely adhered to the interior trim 4. Therefore, it is excellent in sound insulation, appearance, and mounting workability.

  The automobile weather strip 10 according to the third aspect exhibits the same effects as the inventions according to the first and second aspects. Further, a cord-like tear cord disposed on the decorative lip portion 13 along the longitudinal direction at the corner C of the decorative lip portion 13 and the sponge material 14 and attached to the flange 2 and then removed by tearing. 16 is integrally formed through the thin-walled portion 16 a, so that when the weather strip 10 is attached to the flange 2, the sponge material 14 is sandwiched between the decorative lip portion 13 and the end face 2 a of the flange 2. Can be prevented.

  Further, even when sandwiched, the sponge material 14 can be placed in a normal position by pulling the tear cord 16 (in the direction of the arrow in FIG. 7) and tearing it away from the thin portion 16.

  The automobile weather strip 10 according to claim 4 has a sponge material 14 having a substantially tongue-shaped cross section disposed obliquely toward the flange 2, and the vehicle outer corner 14 b is in line contact with the indoor side surface 2 c of the flange 2. Since it is elastically contacted, the sound insulation, the appearance and the mounting workability are excellent as in the first and second aspects of the invention.

  Further, a cord-like tear cord disposed on the decorative lip portion 13 along the longitudinal direction at the continuous corner C of the decorative lip portion 13 and the sponge material 14, attached to the flange 2, and then removed by tearing. 16 is integrally formed through the thin-walled portion 16a, so that the sponge material 14 is prevented from being caught between the decorative lip portion 13 and the end face 2a of the flange 2 as in the invention of claim 3. can do. Moreover, even when pinched, the sponge material 14 can be placed at a normal position by tearing the tear cord 16.

  A first embodiment of a weather strip 10 for an automobile according to the present invention is shown in FIGS. This is provided along the door opening edge formed in the body 1 of the automobile, is attached to the flange 2 formed by the inner panel 1a and the outer panel 1b of the body 1, and elastically contacts the door sash 3, so that the body 1 The seal between the door and the door. The weather strip 10 includes an attachment base 11, a seal part (hollow seal part) 12, a decorative lip part 13, and a sponge material 14 having a low specific gravity (specific gravity 0.05 to 0.4).

  In addition, in order to prevent the weather strip 10 from expanding and contracting, a glass fiber 17 is embedded along the longitudinal direction at one end of the mounting base 11.

  The mounting base 11 is made of solid rubber, has a substantially flat cross section, and does not embed a metal core, and is attached to the flange 2 having a flat cross section by an adhesive tape 15. The hollow seal portion 12 is made of sponge rubber integrally formed on the vehicle exterior side 40 of the mounting base portion 11 and elastically contacts the door sash 3. The decorative lip portion 13 is connected from the one end portion of the mounting base portion 11 to the indoor side 30, and the end portion thereof is in close contact with the interior trim 4.

  The sponge material 14 has a substantially tongue-shaped cross section, and protrudes obliquely from the portion of the decorative lip 13 facing the end surface 2a of the flange 2 toward the indoor side 30 of the flange 2, The side surface 14a is elastically contacted with the indoor side corner 2b of the end surface 2a of the flange 2 in a line contact manner.

  In the weather strip 10 for automobiles according to the present embodiment, the sponge material 14 having a low specific gravity is disposed obliquely toward the indoor side 30 of the flange 2, and the vehicle outer side surface 14 a is set to the indoor side angle of the end surface 2 a of the flange 2. Since the portion 2b is elastically contacted in a line contact manner, variations in molding and assembly of the flange 2 occur, and variations in the shape of the sponge material 14 occur. For example, the sponge material 14 and the flange Even if the amount of lap with 2 becomes larger than a predetermined amount, it can be elastically deformed correspondingly. Accordingly, the sponge material 14 is always in close contact with the flange 2 and exhibits excellent sound insulation.

  Further, since the sponge material 14 is elastically deformed freely, no reaction force is exerted on the decorative lip portion 13 in the direction of pushing it back, so that the end portion can always be in close contact with the interior trim 4. Thereby, since it can prevent that a sound penetrate | invades from between the flange 2 and the decoration lip | rip part 13, sound insulation can be improved further.

  In addition, since no gap G is generated between the decorative lip 13 and the interior trim 4, the appearance is excellent. Furthermore, since it can attach without generating the clearance gap G between the decoration lip | rip part 13 and the interior trim 4, it is excellent in attachment workability | operativity.

  Even when the wrap amount is smaller than a predetermined amount, the sponge material 14 is elastically deformed correspondingly and is in close contact with the flange 2, so that excellent sound insulation, appearance, and mounting workability can be ensured.

  A second embodiment of an automotive weather strip 10 according to the present invention is shown in FIGS. The basic configuration of the weather strip 10 is the same as that of the first embodiment. The feature of the weather strip 10 is that a sponge material 14 having a substantially tongue-shaped cross section and a low specific gravity is used, and the end face 2a of the flange 2 of the decorative lip portion 13 is used. By projecting from the indoor side 30, the sponge material 14 is disposed obliquely toward the flange 2, and the vehicle outer corner 14 b is elastically contacted with the indoor side surface 2 c of the flange 2 in a line contact manner. is there.

  In the weather strip 10 as well, the sponge material 14 can be surely brought into close contact with the flange 2 even if the molding variation of the flange 2 or the like occurs as in the first embodiment. In addition, the decorative lip portion 13 does not receive a large reaction force, so that it closely adheres to the interior trim 4. Therefore, it is excellent in sound insulation, appearance, and mounting workability.

  A third embodiment of a weather strip 10 for an automobile according to the present invention is shown in FIGS. 1 and 7 to 9. As in the second embodiment, this weather strip 10 is provided with a sponge material 14 having a substantially tongue-shaped cross section and a low specific gravity projecting from the interior side 30 of the decorative lip portion 13 from the end face 2a of the flange 2, The vehicle outer corner portion 14b is elastically contacted with the indoor side surface 2c of the flange 2 in a line contact manner.

  Thereby, even if the shaping | molding variation etc. of the flange 2 generate | occur | produce, the sponge material 14 can be closely_contact | adhered to the flange 2 reliably. Further, since the decorative lip portion 13 does not receive a large reaction force, the decorative lip portion 13 reliably contacts the interior trim 4. Therefore, the decorativeness, appearance, and mounting workability are excellent.

  Further, the weather strip 10 is provided with a tear cord 16 which is a string-like member. The tear cord 16 is integrally formed with the decorative lip portion 13 via the thin wall portion 16a, and is arranged along the longitudinal direction at the continuous corner C of the decorative lip portion 13 and the sponge material 14. . And after attaching the weather strip 10 to the flange 2, it pulls in the direction shown by the arrow of FIG. 7, and tears and removes the thin part 16a. The tear cord 16 is configured by embedding a glass fiber core wire 16c in a rubber material (solid or sponge) 16b.

  By providing the tear cord 16, it is possible to prevent the sponge material 14 from being caught between the decorative lip portion 13 and the end face 2 a of the flange 2. Moreover, even if it is pinched, the sponge material 14 can be placed at a normal position by tearing and removing the tear cord 16.

It is a side view which shows the motor vehicle with which the weather strip was attached. FIG. 2 shows a weather strip according to a conventional example, and is a cross-sectional view taken along line XX of FIG. 1. The weather strip which concerns on 1st embodiment of this invention is shown, and it is the XX sectional drawing of FIG. It is a principal part enlarged view of the weather strip shown in FIG. The weather strip which concerns on 2nd embodiment of this invention is shown, and it is the XX sectional view taken on the line of FIG. It is a principal part enlarged view of the weather strip shown in FIG. The weather strip which concerns on 3rd embodiment of this invention is shown, and it is the XX sectional view taken on the line of FIG. It is a principal part enlarged view of the weather strip shown in FIG. It is a right view (partial cross section) of the weather strip shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 1a Inner panel 1b Outer panel 2 Flange 2a End surface 2b Interior side corner 2c Interior side 3 Door sash 4 Interior trim 10 Weather strip 11 Mounting base 12 Seal part 13 Decoration lip part 14 Sponge material 14a Car outer side 14b Car outer corner Part 15 Adhesive tape 16 Tear cord 16a Thin part 16b Rubber material 16c Core wire 17 Glass fiber 20 Weather strip 21 Sponge material 30 Indoor side 40 Outer side C Continuous corner G Gap

Claims (4)

  A weatherstrip that is attached to a flange provided along a door opening edge formed in a body of an automobile, the mounting base being attached to the flange by an adhesive tape, the outside of the mounting base being provided on the outside of the vehicle, and a door sash Projecting from a portion of the decorative lip portion facing the end face of the flange. A sponge material having a generally tongue-shaped cross section and a low specific gravity that elastically contacts the flange, and the sponge material is disposed obliquely toward the indoor side of the flange, and the vehicle outer surface is disposed on the flange surface. A weather strip for automobiles, which is elastically contacted in a line contact manner with a corner on the indoor side of the end face.   A weatherstrip that is attached to a flange provided along a door opening edge formed in a body of an automobile, the mounting base being attached to the flange by an adhesive tape, and the outside of the mounting base that is provided on the outside of the vehicle. A sealing portion that elastically contacts, a decorative lip portion having a generally tongue-shaped cross-section continuously provided from one end portion of the mounting base portion to the indoor side, and protruding from the indoor side from the end face of the flange of the decorative lip portion, A sponge material having a generally tongue-shaped cross section and a low specific gravity that elastically contacts the flange, and the sponge material is disposed obliquely toward the flange, with the corners on the outside of the vehicle on the indoor side surface of the flange Weather strips for automobiles that are elastically contacted in line contact.   A string-like tear cord is disposed on the decorative lip portion along the longitudinal direction at the corner portion where the decorative lip portion and the sponge material are connected, attached to the flange, and then removed by tearing. The automobile weather strip according to claim 1 or 2, which is integrally molded.   A weather strip that is attached to a flange provided along a door opening edge formed in a body of an automobile, and has a substantially flat plate-like attachment base that is attached to the flange by an adhesive tape, and a vehicle outer side of the attachment base. A hollow seal portion that elastically contacts the door sash, a decorative lip portion having a generally tongue-shaped cross-section continuously provided from one end portion of the mounting base portion to the indoor side, and a chamber from the end face of the flange of the decorative lip portion A sponge material that protrudes from the inside and elastically contacts the flange, and has a low specific gravity, and the sponge material is arranged obliquely toward the flange, The flange is elastically contacted to the inner side surface of the flange, and is further disposed on the decorative lip portion along a longitudinal direction at a corner portion where the decorative lip portion and the sponge material are connected. After mounting, the removing by tearing, the string-shaped tear cord, automobile weather strip formed by integral molding through the thin portion.

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