JP2007168552A - Door weather strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door weather strip capable of suppressing waving in a width direction at the time of mounting the door weather strip. <P>SOLUTION: This weather strip 5 is mounted at a door peripheral edge of an automobile. The weather strip 5 is provided with a base bottom part 11 fixed to the door peripheral edge by a double-side adhesive tape 20 and a hollow sealing part 13 formed integrally with the base bottom part 11. The base bottom part 11 is provided with a block part 15 made of solid rubber at a cabin side end part, and is provided with a solid rubber layer 16 extended from the block part 15 to the vehicle outside. A sponge rubber layer 17 is laminated on a tape adhering surface side of the solid rubber layer 16. The double-side adhesive tape 20 is adhered via the sponge rubber layer 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door weather strip attached to a door of a vehicle, and more particularly to a door weather strip fixed to a door with a double-sided adhesive tape.

  Conventionally, a door weather strip is attached to the periphery of a door of a vehicle such as an automobile. The door weather strip is formed of a sponge rubber material such as EPDM (ethylene-propylene-diene copolymer) rubber, for example, and has a base portion fixed to the periphery of the door, and a hollow seal portion integrally formed with the base portion. And. When the door is closed, the seal portion abuts or presses against the door opening periphery of the body, and the space between the body and the door is sealed.

Some door weather strips are fixed to the door periphery by double-sided adhesive tape (see, for example, Patent Document 1). In such a door weather strip mounting operation, a double-sided adhesive tape is previously applied to the base portion, and then the door weather strip is positioned on the door periphery. Then, the door weather strip is attached to the door periphery by pulling the release paper of the double-sided adhesive tape in the width direction (for example, the vehicle inner side direction) while pressing the base using a dedicated positioning jig. .
JP 2001-163062 A

  However, in the door weather strip of the above prior art, since the base portion is formed of a sponge rubber material, the resistance against the force applied in the width direction when peeling the release paper of the double-sided adhesive tape is weak, and the door weather strip is There is a risk of undulation in the width direction.

  On the other hand, as a measure for preventing the longitudinal extension during the installation of the door weather strip made of sponge rubber material, a solid rubber material such as a door weather strip described in Japanese Patent Application Laid-Open No. 59-40937 can be used. Some solid rubber parts are embedded in the base part along the longitudinal direction, for example, but even in such a configuration, the solid rubber part is embedded only in a part of the base part. In the same manner as described above, problems such as undulation in the width direction of the door weather strip may occur.

  On the other hand, when the entire base portion is formed of a solid rubber material like the door weather strip described in JP-A-1-229718, undulation in the width direction hardly occurs. However, the door weather strip needs to be attached to follow the curved shape such as the door peripheral corner. For this reason, if the entire base portion is formed of a solid rubber material and the rigidity is increased, there arises a problem that the follow-up property is deteriorated. As a result, the sealing performance may be reduced.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a door weather strip that can suppress waviness in the width direction at the time of mounting, and consequently suppress deterioration in sealing performance. There is.

  In the following, each means suitable for solving the above-described problems will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A door weather having a base portion fixed to a vehicle door periphery with a double-sided adhesive tape and a hollow seal portion formed integrally with the base portion, and sealing between the door opening periphery of the vehicle and the door In the strip
A block made of a solid elastic material is provided at one end in the width direction of the base,
Extending the solid elastic material layer continuous from the block part to at least the vicinity of the connection part between the seal part and the base part on the other end side in the width direction,
A door weather strip, wherein a sponge elastic material layer is laminated on a tape application surface side of the solid elastic material layer, and a double-sided adhesive tape is attached via the sponge elastic material layer.

  According to the above means 1, the block portion made of a solid elastic material having higher rigidity than the sponge elastic material is provided at one end portion in the width direction of the base portion (for example, the vehicle inner end portion), so that the block portion is attached to the door weather strip. It can function as a positioning part at the time of attachment. In other words, when the door weather strip is attached, the door weather strip can be removed by pressing the base portion using a special positioning jig and peeling the release paper of the double-sided adhesive tape to the side where the block portion is formed. It is possible to prevent undulation in the width direction.

  Further, by extending the solid elastic material layer from this block portion to at least the vicinity of the connecting portion between the seal portion and the base portion on the other end side in the width direction (for example, the vehicle outer side), the rigidity in the base portion width direction is increased. Yes. As a result, the resistance against the force applied in the width direction when the release paper of the double-sided adhesive tape is peeled off when the door weather strip is attached can be strengthened, and further undulation can be prevented.

  In addition, a sponge elastic material layer is laminated on the tape application surface side of the solid elastic material layer, and a double-sided adhesive tape is attached via this. Thereby, compared with the case where a double-sided adhesive tape is directly affixed on a solid elastic material layer, the sticking property of a double-sided adhesive tape can be improved.

  In addition, by providing the block portion and the solid elastic material layer, extension in the longitudinal direction when the door weather strip is attached can be suppressed. On the other hand, it is possible to improve flexibility compared to the case where the entire base is formed of a solid elastic material, and to improve the followability to follow the curved shape of the door peripheral corner when the door weather strip is attached. it can.

  As a result of adopting the above-described various configurations, a decrease in sealing performance is suppressed. In addition, considering that a load is applied to the connection portion between the seal portion and the base portion when the door is closed, a solid elastic material layer having higher rigidity is set to “at least the seal wall portion of the seal portion on the other end side in the width direction and the It is preferable to “extend to the vicinity of the connection portion with the base”. Further, it is more preferable to “extend at least the connecting portion between the sealing wall portion of the sealing portion and the base portion on the other end side in the width direction or a position beyond it”. However, if it extends to the other end in the width direction of the base portion, the followability of the door weather strip at the door peripheral corner portion or the like may be lowered, and the sealing performance may be deteriorated. Is preferably not extended to the other end in the width direction of the base.

  Mean 2. The door weather strip according to means 1, wherein a tape receiving groove for receiving a double-sided adhesive tape is formed on the tape application surface side of the sponge elastic material layer.

  According to the means 2, by providing the tape receiving groove, it becomes easy to specify the sticking position at the time of sticking the double-sided adhesive tape to the door weather strip, and the workability can be improved.

  Means 3. An end of the tape housing groove on the other end side in the width direction is located at a connection portion between the seal wall portion of the seal portion and the base portion or on the other end side in the width direction from the connecting portion. The door weather strip according to means 2 described above.

  According to the means 3, the other end in the width direction, that is, the connecting portion between the seal wall portion and the base portion of the seal portion on the side opposite to the side where the block portion is provided, or the other end in the width direction. The base portion can be fixed by the double-sided adhesive tape at the position on the portion side. Therefore, for example, in the configuration where a larger load is applied to the connection portion between the seal portion on the other end side in the width direction and the base portion when the door is closed, such as the bending type, than the connection portion on the one end side in the width direction, The positional deviation of the door weather strip can be more reliably prevented against the deviation stress caused by the load. In other words, when the double-sided adhesive tape is applied, “the end of the double-sided adhesive tape on the other end side in the width direction is a connecting portion between the seal wall portion of the seal portion and the base portion or the width direction thereof. It is preferable that it is located on the other end side.

  Means 4. 4. The door weather strip according to claim 3, wherein the solid elastic material layer is extended to at least the end of the tape receiving groove on the other end side in the width direction.

  According to the means 4, the operational effect of the means 3 can be made more reliable.

  Means 5. The door weather strip according to any one of means 1 to 4, further comprising an extending portion made of a sponge elastic material extending in the width direction from the other width direction other end portion of the base portion.

  According to the means 5, since the range in which the base portion can be pressed using a dedicated positioning jig when the door weather strip is attached is widened, workability can be improved. Furthermore, since the extension part made of a sponge elastic material is easily deformed in accordance with the shape of the door periphery when it abuts on the door periphery, a gap is hardly formed between the base part and the door periphery. Generation of wind noise can be prevented.

  Means 6. Any one of means 1 to 5 characterized in that when the door is closed, the seal portion is a bending type that elastically abuts or presses against the periphery of the door opening of the vehicle in a state where the seal portion is tilted toward the other end in the width direction. Door weather strip as described in.

  In the case of the bending type, when the door is closed, the connection at the one end side in the width direction with respect to the connecting portion between the seal portion and the base portion on the other end side in the width direction, that is, the side opposite to the side where the block portion is provided. Since a larger load is applied than the part, the configuration of the means 1, 3 and the like is more effective.

  Mean 7 The door weather strip according to any one of means 1 to 6, wherein the seal portion is made of a sponge elastic material.

  According to the said means 7, desired sealing performance and followability at the time of attachment are securable.

  Hereinafter, an embodiment of a door weather strip attached to the periphery of a door of an automobile as a vehicle will be described with reference to the drawings.

  As shown in FIG. 1, a door 3 is provided at the door opening 2 of the automobile 1 so that it can be opened and closed, and a door weather strip 5 is attached to the periphery of the door 3.

  As shown in FIG. 2, the door weather strip 5 is formed in an annular shape with EPDM (ethylene-propylene-diene copolymer) rubber as an elastic material (rubber material) along the periphery of the door 3.

  The door weather strip 5 includes extrusion-molded portions 7 and 8 and mold-molded portions (portions with a dotted pattern) 9 and 10. The extrusion molding parts 7 and 8 are formed substantially linearly (in a long shape) by an extrusion molding machine (not shown). Moreover, the mold forming parts 9 and 10 are formed by a predetermined mold apparatus so as to connect the end edges of the adjacent extrusion forming parts 7 and 8.

  As shown in FIG. 3, which is a cross-sectional view taken along the line JJ of FIG. 1, the door weather strip 5 (extrusion molding portion 7) includes a base portion 11 fixed to the door frame 6 around the door 3, and the base portion. 11 and a seal part 13 having a hollow part 12 therein. The seal part 13 is formed of sponge rubber. In addition, although illustration is abbreviate | omitted, also about the extrusion molding part 8, and the shaping | molding parts 9, 10, it has the cross-sectional shape substantially the same as the extrusion molding part 7. FIG. As shown in FIG. 4, when the door 3 is closed, the seal portion 13 is elastically contacted or pressed against the peripheral edge 2 a of the door opening 2, and the peripheral edge 2 a of the door opening 2 and the door 3 are Is sealed. As can be seen from FIG. 4, the sealing form of the extrusion molding portion 7 is such that when the door 3 is closed, the seal portion 13 is tilted to the vehicle outer side (the right side in FIG. 4) and the peripheral portion 2 a of the door opening 2. It is a bending type that abuts or presses elastically.

  The door weather strip 5 is fixed to the door frame 6 by a double-sided adhesive tape 20 affixed to the base portion 11, particularly in a portion corresponding to the upper side portion of the door 3. In this embodiment, the door weather strip 5 is for this purpose. It has a feature in configuration. Here, the characteristic part is demonstrated in detail.

  As shown in FIG. 3, a block portion 15 made of solid rubber (solid elastic material) is provided at the vehicle interior (left side in FIG. 3) end portion of the base portion 11. The block portion 15 is inserted into a gap between the door frame 6 and an interior member 14 such as a garnish in the attached state to the door frame 6.

  The base 11 is provided with a solid rubber layer (solid elastic material layer) 16. The solid rubber layer 16 is continuously formed in a range from the block portion 15 to a position P2 on the vehicle outer side from a connection portion P1 on the vehicle outer side between the seal wall portion 13a of the seal portion 13 and the base portion 11. Further, a sponge rubber layer (sponge elastic material layer) 17 is laminated on the tape application surface side of the solid rubber layer 16.

  A tape accommodation groove 21 for accommodating the double-sided adhesive tape 20 is formed on the tape application surface side of the sponge rubber layer 17, and the double-sided adhesive tape 20 is affixed in the tape accommodation groove 21. The tape housing groove 21 is formed in a range from the block portion 15 to a position P3 on the vehicle outer side from a connection portion P1 on the vehicle outer side between the seal wall portion 13a and the base portion 11. And in this embodiment, the vehicle outer side edge part of the double-sided adhesive tape 20 is located in the width direction substantially the same position as the position P2 of the vehicle outer side edge part of the solid rubber layer 16.

  Further, an extended portion 27 made of sponge rubber extending from the end portion to the vehicle outer side is formed at the vehicle outer end portion of the base portion 11.

  Next, the attachment method of the door weather strip 5 comprised as mentioned above is demonstrated. First, the door weather strip 5 is positioned on the periphery of the door 3 after the double-sided adhesive tape 20 is pasted on the tape receiving groove 21 of the base portion 11 in advance. And, by holding the block portion 15 and the solid rubber layer 16 using a dedicated positioning jig, for example, by pulling the release paper of the double-sided adhesive tape 20 toward the vehicle inner side where the block portion 15 is formed, The door weather strip 5 is fixed to the periphery of the door 3.

  As described in detail above, by providing the block portion 15 made of solid rubber having higher rigidity than sponge rubber at one end portion in the width direction of the base portion 11 (in the vehicle inner end portion in this embodiment), the block portion 15 is formed. It can function as a positioning portion when the door weather strip 5 is attached. That is, when the door weather strip 5 is attached, if the release paper of the double-sided adhesive tape 20 is peeled off to the side where the block portion 15 is formed (inside the vehicle), the width of the door weather strip 5 in the width direction is reduced. The wave can be prevented.

  Further, by forming the solid rubber layer 16 continuously from the block portion 15 to the position P2 on the vehicle outer side from the connection portion P1 on the vehicle outer side between the seal wall portion 13a of the seal portion 13 and the base portion 11. The rigidity of the base portion 11 in the width direction can be increased. As a result, when the door weather strip 5 is attached, the resistance against the force applied in the width direction when the release paper of the double-sided adhesive tape 20 is peeled can be strengthened, and further undulation can be prevented.

  In addition, the sponge rubber layer 17 is laminated on the tape application surface side of the solid rubber layer 16, and the double-sided adhesive tape 20 is attached via this. Thereby, the sticking property of the double-sided adhesive tape 20 can be improved as compared with the case where the double-sided adhesive tape 20 is directly attached to the solid rubber layer 17.

  Further, by providing the block portion 15 and the solid rubber layer 16, it is possible to suppress extension in the longitudinal direction when the door weather strip 5 is attached. On the other hand, it is possible to increase flexibility as compared with the case where the entire base portion 11 is formed of solid rubber, and to improve the follow-up ability to follow the curved shape of the door 3 peripheral corner when the door weather strip 5 is attached. Can be made.

  As a result, a decrease in sealing performance is suppressed as a result of adopting the above-described various configurations.

  Further, in the case of the bending type door weather strip 5 as in the present embodiment, when the door 3 is closed, the seal portion 13 and the base portion 11 on the opposite side of the vehicle exterior side, that is, the side where the block portion 15 is provided, A larger load is applied to the connection part 25 than the connection part 26 on the vehicle interior side. Therefore, by sticking the double-sided adhesive tape 20 in the vicinity of the connection part 25 between the seal part 13 and the base part 11 on the outside of the vehicle as in the above-described embodiment, it resists the displacement stress caused by the load applied when the door 3 is closed. The positional deviation of the door weather strip 5 can be prevented more reliably.

  Further, by providing the extending portion 27 at the vehicle outer end portion of the base portion 11, the range that can be pressed using a dedicated positioning jig when the door weather strip 5 is attached is widened, thereby improving workability. Can do. Furthermore, since the extending part 27 made of sponge rubber easily deforms in accordance with the shape of the door 3 periphery when it abuts on the periphery of the door 3, it is difficult to generate a gap between the base 11 and the door 3 periphery. It is possible to prevent the generation of wind noise during traveling.

  When the door 3 is closed, a load is applied to the base portion (connecting portion 25) of the seal portion 13, so that the base stiffness of the seal portion 13 needs to be increased. For this reason, when the base 11 is formed of only sponge rubber, it is necessary to take measures such as increasing the thickness to increase the rigidity. In that respect, in the present embodiment, since the solid rubber layer 16 is provided to increase the rigidity, the thickness of the base portion 11 can be minimized, and thickening can be prevented.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the door weather strip 5 for the front door 3 is embodied. However, the portion of the door to be attached is not limited in any way. For example, the door weather strip is attached to the rear door. Can also be applied.

  (B) In the above embodiment, EPDM rubber is adopted as the material (elastic material) of the door weather strip 5, but in addition to that, styrene butadiene rubber, butadiene rubber, chloroprene rubber, butyl rubber, nitrile rubber, ethylene propylene You may comprise various rubber materials, such as copolymer rubber and an acrylic rubber, or another elastic material which has rubber-like elasticity, such as an olefin type thermoplastic elastomer (TPO) or a soft polyvinyl chloride.

  (C) In the said embodiment, although the block part 15 is provided in the vehicle inner side, you may provide not only in this but in the vehicle outer side. In this case, when the door weather strip 5 is attached, it is preferable that the release paper of the double-sided adhesive tape 20 is pulled and peeled in the vehicle outer side direction where the block portion is formed.

  (D) In the above embodiment, the solid rubber layer 16 is continuous from the block portion 15 to the range from the connection portion P1 on the vehicle outer side between the seal wall portion 13a of the seal portion 13 and the base portion 11 to the position P2 on the vehicle outer side. Is formed. The formation range of the solid rubber layer 16 is not limited to this, and it is sufficient that the solid rubber layer 16 extends to at least the vicinity of the connection portion 25 between the seal portion 13 and the base portion 11 on the vehicle exterior side. Therefore, the vehicle outer side end portion of the solid rubber layer 16 may be positioned on the vehicle inner side from the connection portion P1 on the vehicle outer side between the seal wall portion 13a of the seal portion 13 and the base portion 11. However, considering that a load is applied to the connection portion 25 between the seal portion 13 and the base portion 11 when the door 3 is closed, the solid rubber layer 16 having higher rigidity is removed from the block portion 15 at least on the seal portion 13 on the vehicle exterior side. It is preferable to extend to the vicinity of the connection site P1 between the seal wall portion 13a and the base portion 11. On the other hand, if the solid rubber layer 16 is extended to the vehicle outer side end portion of the base portion 11, the followability of the door weather strip 5 at the peripheral corner portion of the door 3 may be lowered, and the sealing performance may be deteriorated. For this reason, it is preferable that the vehicle outer side end portion of the solid rubber layer 16 is positioned on the vehicle inner side from the vehicle outer side end portion of the base portion 11.

  (E) In the above-described embodiment, the tape receiving groove 21 is formed in a range from the block portion 15 to the position P3 on the vehicle outer side from the connection portion P1 on the vehicle outer side between the seal wall portion 13a and the base portion 11. The formation range of the tape accommodation groove 21 is not limited to this, and it may be provided in the range from the block portion 15 to at least the vicinity of the connection portion 25 between the seal portion 13 and the base portion 11 on the vehicle outer side. Therefore, the vehicle outer side end portion of the solid rubber layer 16 may be positioned on the vehicle inner side from the connection portion P1 on the vehicle outer side between the seal wall portion 13a of the seal portion 13 and the base portion 11. However, considering that a load is applied to the connection part 25 between the seal part 13 and the base part 11 when the door 3 is closed, the double-sided adhesive tape 20 is pasted at least near the connection part 25 between the seal part 13 and the base part 11. It is preferable that In addition, the positional relationship between the position P2 of the vehicle outer end portion of the solid rubber layer 16 and the position P3 of the vehicle outer end portion of the tape housing groove 21 is not limited to the above-described embodiment. The position of the vehicle outer end 16 may be located on the vehicle outer side from the position of the vehicle outer end of the tape receiving groove 21.

  (F) It is good also as a structure which fixes the door weather strip 5 whole region with the double-sided adhesive tape 20, and the structure which fixes one part using fastening means, such as a clip, may be employ | adopted.

It is a perspective view which shows a motor vehicle. It is a front view which shows the door weather strip in one Embodiment. It is the JJ sectional view taken on the line of FIG. 1 which shows a door weather strip. It is sectional drawing which shows the door weather strip at the time of a door closing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Automobile, 2 ... Door opening, 3 ... Door, 5 ... Door weather strip, 7, 8 ... Extrusion molding part, 9, 10 ... Molding part, 11 ... Base part, 13 ... Seal part, 13a ... Seal wall Part 15 block part 16 solid rubber layer 17 sponge rubber layer 20 double-sided adhesive tape 21 tape containing groove

Claims (6)

A door weather having a base portion fixed to a vehicle door periphery with a double-sided adhesive tape and a hollow seal portion formed integrally with the base portion, and sealing between the door opening periphery of the vehicle and the door In the strip
A block made of a solid elastic material is provided at one end in the width direction of the base,
Extending the solid elastic material layer continuous from the block part to at least the vicinity of the connection part between the seal part and the base part on the other end side in the width direction,
A door weather strip, wherein a sponge elastic material layer is laminated on a tape application surface side of the solid elastic material layer, and a double-sided adhesive tape is attached via the sponge elastic material layer.   2. The door weather strip according to claim 1, wherein a tape housing groove for housing a double-sided adhesive tape is formed on a tape application surface side of the sponge elastic material layer.   An end of the tape housing groove on the other end side in the width direction is located at a connection portion between the seal wall portion of the seal portion and the base portion or on the other end side in the width direction from the connecting portion. The door weather strip according to claim 2.   4. The door weather strip according to claim 3, wherein the solid elastic material layer extends at least to an end of the tape receiving groove on the other end side in the width direction.   The door weather strip according to any one of claims 1 to 4, further comprising an extending portion made of a sponge elastic material extending in the width direction from the other widthwise other end portion of the base portion. . 6. The bending type according to claim 1, wherein when the door is closed, the sealing portion is a bending type that elastically abuts or presses against a peripheral edge of the door opening of the vehicle in a state where the seal portion is tilted toward the other end in the width direction. The door weather strip described in Crab.

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