JP2010076466A - Door weather strip - Google Patents

Abstract

An object of the present invention is to improve the appearance quality, prevent an increase in the door closing load, and secure a stable sealing property.
A door weather strip (4) includes an attachment base (11) attached to an attachment retainer (32) and a seal part (13) bulging from the attachment base (11) toward the vehicle interior. The mounting base 11 includes a base portion in which both end portions in the vehicle width direction are locked with respect to the first locking portion 33 positioned on the vehicle inner side and the second locking portion 34 positioned on the vehicle outer side of the mounting retainer 32. 14, a vehicle inner side wall portion 15 that extends from the base portion 14, a vehicle outer side wall portion 16, and an outer peripheral wall portion 17 that connects both side wall portions 15 and 16. The seal part 13 is connected to the vehicle interior side wall part 15 via a connection part 21. In the vicinity of the connecting portion 21 in the seal portion 13, a protrusion 26 that abuts against the first locking portion 33 in the attached state of the attachment base 11 is formed.
[Selection] Figure 3

Description

  The present invention relates to a door weather strip attached to a vehicle door.

  Conventionally, a door weather strip is attached to the periphery of a door of a vehicle such as an automobile. As shown in FIG. 5, the door weather strip 41 includes, for example, an attachment base 42 formed of EPDM (ethylene-propylene-diene copolymer) rubber or the like, and a hollow shape integrally formed with the attachment base 42. The seal part 43 is provided. And the door weather strip 41 is attached with respect to a door periphery by the said attachment base 42 being attached to the attachment retainer 52 of the door sash 51 formed, for example by bending a metal plate in multiple times. When the door is closed, the seal portion 43 abuts or presses against the door opening peripheral edge of the body 50 to seal between the body 50 and the door.

  In recent years, in order to improve the appearance quality, it is required that the design surface (vehicle outer wall surface) 53 of the door sash 51 be as narrow as possible. Here, since a space for fitting the glass run is required on the back surface of the mounting retainer 52, the mounting retainer 52 is brought closer to the body 50 when the width of the design surface 53 is to be reduced. It must be arranged at the position. However, if the mounting retainer 52 is to be disposed at a position close to the body 50, the space between the mounting retainer 52 and the body 50 is inevitably reduced. For this reason, when the door is closed, it is not possible to ensure a sufficient space for the seal portion 43 to bend smoothly, and as a result, the sealing performance may be deteriorated.

Therefore, the vehicle outer end edge portion of the seal portion having an arc portion having a substantially semicircular cross section is connected to a side wall portion (vehicle inner side wall portion) located on the vehicle inner side of the mounting base portion, and then the vehicle of the seal portion is connected. Techniques have been proposed in which an inner edge is brought into contact with the door sash (see, for example, Patent Document 1). According to this technique, the seal portion bends not only in the space between the attachment base portion and the body but also in the space inside the vehicle. Therefore, as described above, even when the space between the mounting retainer and the body is relatively small, it is possible to secure a space for the seal portion to bend.
JP 2005-119346 A

  However, in the above technique, since the inner edge of the seal portion is in contact with the door sash, the elastically deformable region in the seal portion is limited to a semicircular arc portion. End up. For this reason, when the door is closed, the reaction force in the seal portion increases, and as a result, the door closing load increases, which may make it difficult to ensure stable sealing performance. .

  On the other hand, for example, regarding the seal portion, it is considered that the region that can be elastically deformed in the seal portion is relatively large by forming the inner edge of the vehicle in a shape that does not contact the door sash. It is done. However, in this case, since the connecting portion that connects the vehicle outer side edge portion of the seal portion and the mounting base portion is relatively thin, the seal portion is likely to swing around the connecting portion. As a result, the position of the seal portion is not stable, and the sealing performance may be reduced.

  The present invention has been made in view of the above circumstances, and its purpose is to prevent an increase in door closing load and the like while improving the appearance quality by narrowing the width of the design surface of the door sash. An object of the present invention is to provide a door weather strip that can ensure the sealing performance.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A mounting base that is attached to a door sash mounting retainer located at the periphery of the vehicle door;
A hollow seal portion formed to bulge from the mounting base to the vehicle interior side,
A door weather strip for sealing between the vehicle body and the door,
The mounting base is
A base portion in which both end portions in the vehicle width direction are disposed in a locked state with respect to the first locking portion located on the vehicle inner side of the mounting retainer and the second locking portion positioned on the vehicle outer side,
A vehicle inner side wall portion formed to extend from the base portion to the outer side in the circumferential direction of the door,
On the vehicle outer side than the vehicle inner side wall portion, the vehicle outer side wall portion formed to extend from the base portion to the outer side in the circumferential direction of the door;
The outer peripheral end portion of the vehicle inner side wall portion and the outer peripheral end portion of the vehicle outer side wall portion are connected, and provided with an outer peripheral wall portion facing the base portion,
The seal part is connected to the vehicle interior side wall part via a connection part,
In the vicinity of the coupling portion of the seal portion, a protrusion is formed that abuts against the first locking portion of the mounting retainer when the mounting base is mounted. The strip.

  According to the said means 1, the said seal part is bulged and formed from the vehicle inner side wall part of the said attachment base to the vehicle inner side. As a result, the seal portion bends not only in the space between the outer peripheral wall portion of the mounting base and the vehicle body but also in the space between the vehicle inner side wall portion of the mounting base and the vehicle body, and the mounting retainer Even when the gap between the vehicle body (body) and the vehicle body is relatively small, sufficient sealing performance can be ensured. That is, according to this means 1, the width of the design surface of the door sash can be made relatively narrow while preventing deterioration of the sealing performance, and the appearance quality can be improved.

  Furthermore, since the said seal part is connected with the vehicle interior side wall part via the connection part, it can be elastically deformed in most parts except the part connected to a connection part. Thereby, when closing a door, the increase in the door closing load accompanying the increase in the reaction force in a seal | sticker part can be prevented more reliably, and the stable sealing performance can be ensured.

  On the other hand, although there is a concern about the instability of the seal position due to the elastically deformable configuration of the majority of the seal portion, in this means 1, in the vicinity of the connecting portion (root portion) of the seal portion, A protrusion that abuts against the first locking portion of the mounting retainer is formed. Thereby, the part corresponding to a protrusion among a seal part will be supported reliably. Therefore, the position of the seal portion can be stabilized, and a more stable sealing performance can be realized. In addition, the stress when the door is closed is dispersed when the protrusion comes into contact with the first locking portion. For this reason, it is possible to prevent damage caused by the base of the seal portion or the base of the connecting portion strongly hitting the tip of the first locking portion. That is, by providing the protrusions, the effects of realizing more stable sealing performance and preventing damage to the seal portions and the like can be achieved at once.

Mean 2. The outer peripheral wall portion is provided with a lip portion extending outward in the circumferential direction of the door,
2. The door weather strip according to claim 1, wherein the lip portion extends from a back surface of a portion of the outer peripheral wall portion facing a substantially central portion in the width direction of the base portion.

  In the door weather strip disclosed in Patent Document 1 or the like, a lip portion that extends to the outer peripheral side of the door is provided in order to further improve the sealing performance. The lip portion is formed so as to extend from a portion of the mounting base portion located on the outer side in the width direction in order to prevent contact with the seal portion when the door is closed. However, in this case, since the lip portion extends from the outer side in the width direction of the mounting base, when the stress in the removal direction of the mounting base is applied to the lip, the outer edge of the mounting base on the vehicle Stress concentrates on the part. Therefore, in such an arrangement of the lip portion, when a stress in the removal direction of the mounting base is applied to the lip portion, the mounting base is likely to drop off from the mounting retainer, and the mounting base due to stress concentration There is also concern about damage.

  In this respect, according to the present means 2, the lip portion is configured to extend from the back surface of the portion of the outer peripheral wall portion of the mounting base portion that faces the substantially central portion in the width direction of the base portion. Therefore, even when a stress in the direction in which the mounting base part is pulled out is applied to the lip part, the inner side edge part of the base part that is locked to the first locking part and the second locking part Stress is distributed and applied to both the outer side edge of the base portion to be locked. As a result, it is possible to more reliably prevent the attachment base from falling off the attachment retainer, damage to the attachment base, and the like.

Means 3. The outer peripheral wall portion is provided with a lip portion extending outward in the circumferential direction of the door,
The lip portion is
A main body extending from the outer peripheral wall in a state inclined to the vehicle outer side with respect to the outer peripheral wall,
A return portion extending from the distal end portion of the main body portion toward the outer peripheral wall portion;
When the door is closed, the main body portion tilts toward the vehicle outer side, the proximal end portion of the return portion abuts on the vehicle main body, and the distal end portion of the return portion is in contact with the outer peripheral wall portion. The door weather strip according to claim 1 or 2, wherein the door weatherstrip is brought into contact with each other.

  Generally, the lip portion is formed in a U-shaped cross section as shown in Patent Document 1 and the like. Further, when the door is closed, a portion of the lip portion that is located on the front end side with respect to the bent portion is pressed against the periphery of the door opening of the vehicle body in a state where the portion is tilted to the vehicle outer side. By the way, in such a lip portion, when the door is closed, the back surface portion (concave portion) of the bent portion of the lip portion becomes visible from the outside of the vehicle. Therefore, there is a possibility that appearance quality may be deteriorated.

  In this regard, according to the present means 3, the lip portion extends from the outer peripheral wall portion to the vehicle outer side in a tilted state, and from the distal end portion of the main body portion to the outer peripheral wall portion side (attachment base side). And a return portion extending. When the door is closed, the main body portion tilts toward the vehicle outer side, the proximal end portion of the return portion contacts the vehicle main body, and the distal end portion of the return portion contacts the outer peripheral wall portion. For this reason, when the door is closed, the portion visible from the outside of the vehicle can be the return portion only. As a result, it is possible to further improve the appearance quality.

  Further, when the door is closed, the main body portion tilts toward the vehicle outer side, so that the situation where the seal portion and the lip portion come into contact with each other can be prevented more reliably. As a result, an increase in the door closing load can be more effectively suppressed, and a more stable sealing property can be ensured. The present means 3 is particularly significant when the above-described means 2 in which the seal portion and the lip portion are in a relatively close positional relationship is adopted.

  Means 4. The door weather strip according to any one of means 1 to 3, wherein the mounting base and the seal portion are formed of foamed rubber.

  According to the said means 4, since the attachment base part and the seal | sticker part are formed with the foamed rubber, the weight reduction of a door weather strip can be achieved.

  By the way, if the mounting base is formed of foamed rubber, the mounting base is easily elastically deformed, and there is a concern that the mounting base will fall off from the mounting retainer, the mounting base will be damaged, etc. Thus, the occurrence of such a problem can be suppressed more reliably. That is, when adopting this means 4, it is preferable to use the above means 2 together.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, an automobile 1 as a vehicle is provided with a door 3 that can be opened and closed at an opening of a body 2 as a vehicle body. A door weather strip 4 is attached to the periphery of the door 3.

  As shown in FIG. 2, the door weather strip 4 is formed in an annular shape, and includes extrusion-molded portions 5 and 6 and mold-molded portions 7 and 8 (portions with a dotted pattern in the figure). It is composed of The extrusion molding parts 5 and 6 are formed in an elongated shape by an extruder (not shown), while the mold molding parts 7 and 8 connect end edges of adjacent extrusion molding parts 5 and 6. Thus, it is formed by a predetermined mold apparatus.

  As shown in FIG. 3, the door weather strip 4 includes a mounting base portion 11, a lip portion 12, and a seal portion 13, which are integrally formed of EPDM sponge rubber as foamed rubber. .

  The mounting base portion 11 has an elongated shape, and includes a base portion 14, a vehicle inner side wall portion 15, a vehicle outer side wall portion 16, and an outer peripheral wall portion 17. The base portion 14 is attached to the attachment retainer 32 of the door sash 31 of the door 3 when the door weather strip 4 is mounted on the periphery of the door 3. More specifically, the mounting retainer 32 is formed on the inner side of the vehicle and has a first locking portion 33 having a substantially L-shaped cross section, and a second locking portion formed on the outer side of the vehicle and having a substantially L-shaped cross section. And a locking portion 34. The vehicle interior end edge portion of the base portion 14 is disposed in a locked state with respect to the first locking portion 33, and the vehicle exterior end edge portion of the base portion 14 is disposed in the second locking portion 34. The base portion 14 is attached to the attachment retainer 32 by being disposed in a locked state. In the present embodiment, the mounting retainer 32 is formed by bending a plurality of metal plates a plurality of times. In addition, the design surface 36 of the door sash 31 has a relatively narrow width (for example, about 15 mm), and the gap between the mounting retainer 32 and the body 2 is relatively small. .

  Further, the vehicle interior side wall portion 15 is formed to extend from a portion located on the vehicle interior side of the base portion 14 to the outer peripheral side of the door 3, and a tip portion thereof is a first engagement of the mounting retainer 32. It is comprised so that it may be located in the outer peripheral side rather than the stop part 33. FIG. Further, the vehicle outer side wall portion 16 is formed to extend from a portion located on the vehicle outer side of the base portion 14 to the outer peripheral side, and is opposed to the vehicle inner side wall portion 15 in a substantially parallel state. ing.

  The outer peripheral wall portion 17 is formed so as to connect between an outer peripheral end portion (tip edge) of the vehicle inner side wall portion 15 and an outer peripheral end portion (tip edge) of the vehicle outer side wall portion 16. , Opposite to the base portion 14. The connecting portion between the outer peripheral wall portion 17 and the vehicle outer side wall portion 16 is provided with a sub lip portion 18 formed to extend to the vehicle outer side, and the second locking portion is formed by the sub lip portion 18. 34 is covered.

  Further, the lip portion 12 is a rear surface of a portion of the outer peripheral wall portion 17 that faces the substantially central portion in the width direction of the base portion 14 (in the present embodiment, the substantially central portion in the width direction of the outer peripheral wall portion 17). The outer peripheral surface is extended to the outer peripheral side. The lip portion 12 has a substantially L-shaped cross section, a main body portion 19 that extends toward the outer peripheral side, and extends from the distal end portion of the main body portion 19 toward the inner peripheral side (the outer peripheral wall portion 17 side). And a return portion 20. The bent portion between the main body portion 19 and the return portion 20 is configured to form an acute angle.

  In addition, the main body 19 is provided in a state slightly inclined toward the vehicle outer side with respect to the outer peripheral wall 17. Thereby, when the door 3 is closed, the main body 19 tilts toward the vehicle outer side.

  The return portion 20 has a flat plate shape extending in the longitudinal direction, and the width of the return portion 20 is a gap formed between the body 2 and the outer peripheral wall portion 17 when the door 3 is closed. It is assumed to be approximately equal to the size of. As a result, when the door 3 is closed, the proximal end portion of the return portion 20 comes into contact with the body 2, while the distal end portion of the return portion 20 comes into contact with the outer peripheral wall portion 17 ( (See FIG. 4).

  The seal portion 13 is hollow and bulges toward the inside of the vehicle. Further, the seal portion 13 is connected to the vehicle interior side wall portion 15 of the mounting base portion 11 via a connecting portion 21. More specifically, the seal portion 13 is provided on the vehicle interior side wall portion 15 via a connecting portion 21 projecting from a region between the tip edge of the vehicle interior side wall portion 15 and the first locking portion 33. Is connected to The connection portion 21 has a long shape extending along the longitudinal direction of the attachment base portion 11 and is formed to be relatively thin.

  When the door 3 is closed, the inner surface of the seal portion 13 is pressed against the seal surface 35 formed on the body 2 in a substantially parallel state. As a result, the space between the body 2 and the door 3 is sealed in a state where the seal portion 13 is crushed approximately equally toward the outer peripheral side and the inner peripheral side.

  Further, in the vicinity of the portion of the seal portion 13 that is connected to the connecting portion 21, a protruding portion 26 that protrudes toward the inner peripheral side is formed. The protrusion 26 extends along the longitudinal direction of the attachment base 11 and abuts against the outer peripheral side end surface of the first locking portion 33 in a state where the attachment base 11 is attached to the attachment retainer 32. It has become.

  As described above in detail, according to the present embodiment, the seal portion 13 is formed to bulge from the vehicle interior side wall portion 15 of the attachment base portion 11 toward the vehicle interior side. Accordingly, the seal portion 13 bends not only in the space between the outer peripheral wall portion 17 of the mounting base portion 11 and the body 2 but also in the space between the vehicle interior side wall portion 15 of the mounting base portion 11 and the body 2. Thus, even when the gap between the mounting retainer 32 and the body 2 is relatively small, sufficient sealing performance can be ensured. That is, according to the present embodiment, the width of the design surface 36 of the door sash 31 can be made relatively narrow while preventing deterioration of the sealing performance, and the appearance quality can be improved.

  Furthermore, since the seal portion 13 is connected to the vehicle interior side wall portion 15 via the connecting portion 21, the seal portion 13 can be elastically deformed in most portions except for a portion connected to the connecting portion 21. Thereby, when closing the door 3, the increase in door closing load accompanying the increase in the reaction force in the seal part 13 can be prevented more reliably, and a stable sealing property can be ensured.

  On the other hand, there is a concern that the seal position may become unstable due to the elastic deformation of the majority of the seal portion 13, but in the present embodiment, the vicinity of the connecting portion 21 of the seal portion 13 (the root portion). ) Is formed with a protrusion 26 that abuts against the first locking portion 33 of the mounting retainer 32. Thereby, the part corresponding to the protrusion 26 among the seal parts 13 will be supported reliably. Therefore, the position of the seal portion 13 can be stabilized, and a more stable sealing performance can be realized. In addition, the stress when the door 3 is closed is dispersed by the protrusion 26 coming into contact with the first locking portion 33. For this reason, it is possible to prevent damage caused by the base of the seal portion 13 or the base of the connecting portion 21 strongly hitting the tip of the first locking portion 33. That is, by providing the protrusion 26, the effects of realizing more stable sealing performance and preventing damage to the seal portion 13 and the like are exhibited at once.

  In addition, the lip portion 12 is configured to extend from the back surface of a portion of the outer peripheral wall portion 17 of the attachment base portion 11 that faces the substantially central portion in the width direction of the base portion 14. Therefore, even when a stress in the removal direction of the mounting base 11 is applied to the lip portion 12, the vehicle inner side edge portion of the base portion 14 that is locked to the first locking portion 33, and the second The stress is distributed and applied to both the vehicle outer end edge portion of the base portion 14 locked to the locking portion 34. As a result, it is possible to more reliably prevent the attachment base 11 from falling off the attachment retainer 32, damage to the attachment base 11, and the like.

  Further, since the door weather strip 4 is made of EPDM sponge rubber, the door weather strip 4 can be reduced in weight. When the attachment base 11 is formed of sponge rubber, the attachment base 11 is easily elastically deformed, and there is a further concern that the attachment base 11 is dropped from the attachment retainer 32 or the attachment base 11 is damaged. As in the embodiment, by extending the lip portion 12 from the back surface of the portion of the outer peripheral side wall portion 17 of the mounting base portion 11 that faces the substantially central portion in the width direction of the base portion 14, Generation can be suppressed more reliably.

  In addition, the lip portion 13 extends from the outer peripheral wall portion 17 in an inclined state toward the vehicle outer side, and from the distal end portion of the main body portion 19 to the outer peripheral wall portion 17 side (attachment base portion 11 side). The extending part 20 extends. When the door 3 is closed, the main body 19 tilts to the outside of the vehicle, the proximal end of the return portion 20 contacts the body 2, and the distal end of the return portion 20 faces the outer peripheral wall portion 17. Abut. For this reason, when the door 3 is closed, the portion visible from the outside of the vehicle can be the return portion 29 only. As a result, it is possible to further improve the appearance quality.

  Further, when the door 3 is closed, the main body 19 tilts to the outside of the vehicle, so that the situation where the seal portion 13 and the lip portion 12 come into contact with each other can be more reliably prevented. As a result, an increase in the door closing load can be more effectively suppressed, and a more stable sealing property can be ensured.

  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 4 is formed of EPDM sponge rubber, but the material forming the door weather strip 4 is not limited to sponge rubber. Therefore, for example, the seal portion 13 may be formed of sponge rubber while the attachment base portion 11 may be formed of solid rubber.

  (B) In the above embodiment, the door weather strip 4 provided on the periphery of the body side door 3 corresponding to the (side front) door 3 is embodied, but the rear door, the back door, the luggage door (trunk lid), The present invention can also be applied to door weather strips provided on the periphery of other doors such as a roof door (sliding roof panel).

It is a perspective view which shows a motor vehicle. It is a front view which shows a door weather strip. It is the JJ sectional view taken on the line of FIG. It is sectional drawing which shows the seal | sticker part etc. in the time of a door closing. It is sectional drawing which shows the door weather strip which concerns on a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Automobile as a vehicle, 2 ... Body as a vehicle main body, 3 ... Door, 4 ... Door weather strip, 11 ... Mounting base, 12 ... Lip part, 13 ... Seal part, 14 ... Base part, 15 ... Inside the car Side wall portion, 17 ... outer peripheral wall portion, 19 ... main body portion, 20 ... return portion, 21 ... connecting portion, 26 ... ridge portion as a protrusion, 31 ... door sash, 32 ... mounting retainer, 33 ... first locking Part, 34 ... 2nd latching | locking part.

Claims (4)

A mounting base that is attached to a door sash mounting retainer located at the periphery of the vehicle door;
A hollow seal portion bulging from the mounting base to the inside of the vehicle,
A door weather strip for sealing between the vehicle body and the door,
The mounting base is
A base portion in which both end portions in the vehicle width direction are disposed in a locked state with respect to the first locking portion located on the vehicle inner side of the mounting retainer and the second locking portion positioned on the vehicle outer side,
A vehicle inner side wall portion formed to extend from the base portion to the outer side in the circumferential direction of the door,
On the vehicle outer side than the vehicle inner side wall portion, the vehicle outer side wall portion formed to extend from the base portion to the outer side in the circumferential direction of the door;
The outer peripheral end portion of the vehicle inner side wall portion and the outer peripheral end portion of the vehicle outer side wall portion are connected, and provided with an outer peripheral wall portion facing the base portion,
The seal part is connected to the vehicle interior side wall part via a connection part,
In the vicinity of the coupling portion of the seal portion, a protrusion is formed that abuts against the first locking portion of the mounting retainer when the mounting base is mounted. The strip. The outer peripheral wall portion is provided with a lip portion extending outward in the circumferential direction of the door,
2. The door weather strip according to claim 1, wherein the lip portion extends from a back surface of a portion of the outer peripheral wall portion facing a substantially central portion in the width direction of the base portion. The outer peripheral wall portion is provided with a lip portion extending outward in the circumferential direction of the door,
The lip portion is
A main body extending from the outer peripheral wall in a state inclined to the vehicle outer side with respect to the outer peripheral wall,
A return portion extending from the distal end portion of the main body portion toward the outer peripheral wall portion;
When the door is closed, the main body portion tilts toward the vehicle outer side, the proximal end portion of the return portion abuts on the vehicle main body, and the distal end portion of the return portion is in contact with the outer peripheral wall portion. The door weather strip according to claim 1, wherein the door weather strip is in contact with each other.   The door weather strip according to any one of claims 1 to 3, wherein the mounting base portion and the seal portion are formed of foamed rubber.

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