JP6960346B2 - Automotive door weather strip - Google Patents

Description

The present invention relates to a door weather strip attached to the peripheral edge of an automobile door, and more particularly to an automobile door weather strip applied to a hinged rear door.

As a structure of an automobile door weather strip applied to this type of rear door, for example, the structure described in Patent Document 1 has been proposed.

In the structure of the door weather strip described in Patent Document 1, in order to prevent rainwater or the like collected on the upper side of the rear door from falling from the front end of the upper side when the rear door is opened, the corner connection of the door weather strip 10 is made. A sub-seal lip 43 and a turning wall 43b are provided in the portion 40, and a drainage cutout portion 47 for discharging water from the upper side portion 20 is formed between the tip of the back seal lip 44 and the turning wall 43b. (See FIG. 1 of Patent Document 1).

It should be noted that this kind of countermeasure is often required for a so-called SUV vehicle in which the upper side portion of the rear door, which is shaped along the vehicle body roof portion, is substantially horizontal in the side view due to the modeling of the entire vehicle body.

Japanese Unexamined Patent Publication No. 2004-203325

However, in the structure described in Patent Document 1, in addition to the sub-seal lip 43 and the back seal lip 44, the turning wall 43b coexists in the corner connection portion 40, so that the reaction force of the sub-seal lip 43 There is a risk that the original function of the sub-seal lip 43 cannot be fully exhibited.

Further, in the structure described in Patent Document 1, since the concave groove 35 between the back seal lip 34 and the overhanging portion 36a is used as a drainage channel on the vertical side portion 30 side of the door weather strip, a part of rainwater or the like is provided. May become so-called stormwater and infiltrate into the room.

Further, recently, a parting seal for sealing the gap between the rear door and the front door is integrally formed by hanging from the corner connecting portion 40. When the parting seal is integrally formed on the premise of the structure described in the cited document 1, not only the sub-seal lip 43 but also the sub-seal lip 43 is formed in combination with the increase in the reaction force of the sub-seal lip 43. , There is a problem that the sealing property of the parting seal is also hindered. This is based on the fact that the bending direction of the seal lip is different between the sub-seal lip 43 along the upper side of the door sash and the parting seal along the vertical side of the door sash.

The present invention has been made by paying attention to such a problem, and even if measures are taken to prevent rainwater or the like collected on the upper side of the rear door from falling from the front end of the upper side when the rear door is opened. Provided is a door weather strip structure designed so as not to increase the reaction force of the sub-seal lip.

The present invention provides an automobile door weather strip to be attached to the peripheral edge of a rear door of an automobile, and includes an upper side corresponding portion along the upper side portion of the rear door, a vertical side corresponding portion along the front vertical side portion of the rear door, and the above. It is a structure of an automobile door weather strip including a corner connecting portion in which a plate-shaped terminal base portion is integrally formed on the front side while connecting the upper side corresponding portion and the vertical side corresponding portion.

On the back surface of the terminal base portion, the sub-seal lip and the panel lip on the back surface of the upper side corresponding portion are extended in two upper and lower stages, and the sub-seal lip extension portion and the panel lip extension portion are described above. While a concave groove extension portion continuous with the concave groove on the upper side corresponding portion side is formed, the back surface front end portion of the base portion includes a water-impervious wall that blocks the space of the concave groove extension portion and the impermeable wall. A drain hole adjacent to the rear side is formed, and an inclined guide rib for guiding the water falling from the drain hole to the rear side is formed on the lower side of the drain hole. Further, the impermeable wall is set to a height that does not interfere with the sub-seal lip extension portion when it is bent and deformed.

Therefore, in the present invention, rainwater or the like blocked by the impermeable wall on the back surface of the terminal base portion falls from the drain hole and is guided to the guide rib, and runs down between the terminal base portion and the door panel. It becomes.

In a desirable embodiment, as described in claim 2, a rear seal lip extension portion continuous with the rear seal lip on the vertical side corresponding portion side is provided at the rear inner corner portion of the back surface of the terminal base portion. It is formed and the guide ribs extend toward the back seal lip extension.

In a more preferred embodiment, as described in claim 3, the guide rib extends close to the back seal lip extension.

In another desirable embodiment, as described in claim 4, the door to which the automobile door weather strip is mounted is a rear door, and the portion of the terminal base portion excluding the sub-seal lip extension portion is used. A parting seal that hangs down and seals between the rear door and the front door is integrally formed.

According to the present invention, it is possible to prevent rainwater or the like from falling from the front end of the upper side when the door is opened, and the impermeable wall is set to a height that does not interfere with the sub-seal lip extension portion when the door is bent and deformed. Therefore, the reaction force of the sub-seal lip extension portion is not increased, and the original function of the sub-seal lip is not impaired.

Further, according to the invention of claim 3, a back seal lip extension portion continuous with the back seal lip on the side corresponding to the vertical side is formed in the inner corner portion on the rear side of the back surface of the terminal base portion. Since the guide rib extends close to the back seal lip extension portion, the effect of inducing rainwater or the like is more effectively exhibited. Therefore, on the side corresponding to the vertical side of the door weather strip, it is more advantageous in preventing rainwater or the like from entering from the bottom surface side of the vertical side corresponding portion to the indoor side.

According to the invention of claim 4, even if the parting seal is integrally formed with the terminal base portion of the corner connecting portion, the parting seal is substantially with respect to the sub-seal lip extension portion. Since it is discontinuous, the sealing property of the parting seal is not hindered, and the sealing property required for the sub-seal lip extension portion and the parting seal can be sufficiently ensured.

A schematic perspective view showing a state in which the rear door of a 4-door type vehicle is opened. As a first embodiment of the door weather strip according to the present invention, an enlarged view of the door weather strip applied to the rear door of FIG. 1 as viewed from the rear side. An enlarged cross-sectional view taken along the line BB of FIG. An enlarged cross-sectional view taken along the line CC of FIG. An enlarged perspective view of part A in FIG. The schematic explanatory view for demonstrating the function in the vertical side corresponding part of the front side including the corner connection part of FIG. It is a figure which shows the 2nd Embodiment of the door weather strip which concerns on this invention, and is the perspective view of the part equivalent to FIG.

1 to 6 show a more specific first mode for carrying out the automobile door weather strip according to the present invention, and FIG. 1 shows a state in which the rear door on the left side of the 4-door type vehicle is opened. , FIG. 2 shows an enlarged view of the door weather strip applied to the rear door of FIG. 1 as viewed from the back side or the back side (mounting surface side with respect to the rear door). Further, FIGS. 3 and 4 show enlarged cross-sectional views along the lines BB and CC of FIG. 2, respectively.

As shown in FIGS. 1 and 2, a long door weather strip 2 is attached to the peripheral edge of the rear door 1 including the substantially arch-shaped door sash 1a in a closed loop shape by using, for example, a known clip or the like. NS. When the rear door 1 is closed, the door weather strip 2 comes into contact with the peripheral edge of the door opening on the vehicle body side to seal the inside and outside of the vehicle. As a result, airtightness, watertightness, sound insulation and the like are ensured. In the case of the rear door 1 shown in FIG. 1, the upper side portion of the door sash 1a, which is shaped along the vehicle body roof portion, is substantially horizontal in side view due to the modeling of the entire vehicle body.

The door weather strip 2 shown in FIG. 2 has a substantially straight upper side corresponding portion 3 that is shaped along the upper side portion of the door sash 1a, and front and rear portions that are shaped along the front and rear vertical side portions and the lower side portion of the rear door 1, respectively. The vertical side corresponding portions 4a and 4b and the lower side corresponding portion 4c are integrated with the general portion 4, and the upper side corresponding portion 3 and the general portion 4 are connected to each other via the front and rear corner connecting portions 5 and 25. It is connected to the.

The upper side corresponding portion 3 is formed by an extrusion molding method having a uniform cross-sectional shape as shown in FIG. 3, for example, while the general portion 4 including the front and rear vertical side corresponding portions 4a and 4b and the lower side corresponding portion 4c is formed. Similarly, it is formed by an extrusion molding method so as to have a uniform cross-sectional shape as shown in FIG. 4, for example. Then, after the terminals of the upper side corresponding portion 3 and the terminals of the general portion 4 having slightly different cross-sectional shapes are butted against each other, the front and rear corner connecting portions 5 and 25 are formed by a mold forming method. As shown in the above, the door weather strip 2 is formed as a closed loop. At that time, the parting seal 6 is integrally formed so as to hang down from the corner connecting portion 5 on the front side. The details of the parting seal 6 will be described later. Reference numerals 7 in FIGS. 3 and 4 indicate a vehicle body panel, and reference numeral 8 in FIG. 4 indicates a door panel of the rear door 1.

In the upper side corresponding portion 3 shown in FIG. 2, as shown in FIG. 3, a mounting base portion 9 including the hollow portions 9a and 9b, a hollow seal lip 10 projecting obliquely from the mounting base portion 9 toward the indoor side, and mounting It has a sub-seal lip 11 on the back side that is bent in an inverted shape from the base 9 toward the outdoor side, and a panel lip 12 that is parallel to the sub-seal lip 11 under the sub-seal lip 11. There is. The panel lip 12 forms a concave groove 13 between the mounting base 9 and the back surface of the sub-seal lip 11. Then, the mounting base 9 and the panel lip 12 are mounted so as to be seated on the upper side of the door sash 1a, and when the rear door 1 is closed, both the hollow seal lip 10 and the sub seal lip 11 come into contact with the vehicle body panel 7. By bending and deforming, a predetermined sealing function is exhibited.

On the other hand, as shown in FIG. 4, the general portion 4 including the front and rear vertical side corresponding portions 4a and 4b and the lower side corresponding portion 4c shown in FIG. 2 is attached to the substantially triangular mounting base portion 14 including the hollow portion 14a. It has a hollow seal lip 15 projecting from the base 14 and a back seal lip 16 adjacent to the hollow seal lip 15. Then, the mounting base 14 and the rear seal lip 16 are mounted so as to be seated around the door panel 8 in the rear door 1, and when the rear door 1 is closed, the hollow seal lip 15 is elastically deformed by coming into contact with the vehicle body panel 7. A predetermined sealing function will be exhibited.

FIG. 5 is an enlarged perspective view of a portion A centered on the front corner connecting portion 5 of FIG. As shown in the figure, the front corner connecting portion 5 is interposed between the upper side corresponding portion 3 and the front side vertical side corresponding portion 4a which is a part of the general portion 4 and is curved with a predetermined curvature. It has a variable connection portion 17. As shown in FIGS. Both are connected smoothly. Therefore, the portion of the gradual change connecting portion 17 that is close to the upper side corresponding portion 3 is similar to the cross-sectional shape of the upper side corresponding portion 3 shown in FIG. 3, while the portion that is close to the vertical side corresponding portion 4a. Then, it is similar to the cross-sectional shape shown in FIG. 4 of the vertical side corresponding portion 4a. The joint line between the corner connecting portion 5 and the upper side corresponding portion 3 is shown by reference numeral P1 in FIGS. 2 and 5, and the joining line between the corner connecting portion 5 and the front vertical side corresponding portion 4a is shown by reference numeral P2 in FIG. ing.

Further, on the back surface side of the gradual change connection portion 17, a substantially rectangular plate-shaped terminal base portion 18 is formed so as to project toward the front side. Therefore, the corner connecting portion 5 is roughly classified into a curved gradually changing connecting portion 17 and a plate-shaped terminal base portion 18 integrated with the curved connecting portion 17.

The upper side corresponding portion 3 connected to the terminal base portion 18 has a hollow seal lip 10 as well as a sub-seal lip 11 and a panel lip 12 on the back side, as described above with reference to FIG. ing. The sub-seal lip 11 and the panel lip 12 on the upper side corresponding portion 3 side are extended to the terminal base portion 18 side while maintaining the parallel state of both, and the sub-seal lip 11 and the panel lip 12 on the back side of the terminal base portion 18 are sub-staged in two upper and lower stages. A seal lip extension portion 11a and a panel lip extension portion 12a are formed. A concave groove extension portion 13a is formed between the sub-seal lip extension portion 11a and the panel lip extension portion 12a so as to be continuous with the concave groove 13 on the upper side corresponding portion 3 side.

On the back surface of the terminal base portion 18 below the panel lip extension portion 12a, a plurality of reinforcing ribs 19 are formed parallel to each other so as to incline downward toward the rear side. Then, by inserting the clip 20 having a relatively large plate-shaped head portion 20a from the indoor side of the terminal base portion 18, the terminal base portion 18 uses the plurality of ribs 19 as seating surfaces for the door sash 1a (FIG. 1). (See) is fixed to the back surface of the front corner portion 1b. In FIG. 5, a locking portion 20b of the clip 20 that penetrates the terminal base portion 18 and is locked in a clip hole (not shown) on the door sash 1a side is shown by a solid line.

The concave groove extension portion 13a formed by the sub-seal lip extension portion 11a and the panel lip extension portion 12a shown in FIG. 5 is slightly rearward of the open front end even if it is opened at the front end of the terminal base portion 18. An impermeable wall 21 is formed on the side so as to block the space of the recessed groove extension portion 13a. The impermeable wall 21 is formed so as to rise diagonally from the bottom surface of the concave groove extension portion 13a toward the front side, and as shown by the virtual line F in FIG. 3, the sub-seal lip extension portion 11a is a sub-seal. The impermeable wall 21 is preset to a height that does not interfere with the sub-seal lip extension portion 11a even if it is bent and deformed together with the lip 11.

Further, a drain hole 22 is formed so as to be adjacent to the rear side of the impermeable wall 21 shown in FIG. 5 so as to cut out a part of the concave groove extension portion 13a and the panel lip extension portion 12a. As a result, even if the concave groove extension 13a formed between the sub-seal lip extension 11a and the panel lip extension 12a is blocked by the impermeable wall 21, the concave groove extension 13a is a drain hole. It is open downward through 22.

Of the plurality of ribs 19 shown in FIG. 5, a part thereof is missing around the locking portion 20b on the clip 20 side. This is because the clip hole on the door sash 1a side that will be locked with the locking portion 20b on the clip 20 side is formed in the embossed portion that is one step higher, and the interference between some ribs 19 and the embossed portion. This is to avoid. Of these plurality of ribs 19, the rib located directly below the drain hole 22 also serves as a guide rib 23 for guiding the water falling from the water wiping hole 22 to the rear side, as will be described later.

Further, in the portion of the terminal base portion 18 near the inner corner portion on the rear side, an ultrafine bead-shaped back seal lip extension portion 24 is formed in a shape following the curvature of the gradually changing connection portion 17. The bead-shaped back seal lip extension portion 24 passes through the bending lip 24a and the auxiliary extension portion 16a of the gradual change connection portion 17 and continuously reaches the back seal lip 16 on the vertical side corresponding portion 4a side shown in FIG. (See FIG. 6 below).

Further, as shown in FIG. 2, a relatively wide plate-shaped parting seal 6 is integrally formed at the front end of the terminal base portion 18 shown in FIG. 5 so as to hang down. ing. The parting seal 6 includes a mounting base portion 6a along a vertical side portion on the front side of the door sash 1a, and a seal lip 6b integrally formed from the front end of the mounting base portion 6a and curved in a substantially bow shape. The mounting base 6a is attached to the vertical side of the door sash 1a by a clip or the like so as to overlap the vertical side of the door sash 1a. Even if the upper end of the seal lip 6b is connected to the front end portion of the panel lip extension portion 12a, it is not connected to the sub seal lip extension portion 11a and is discontinuous.

Reference numerals P3 in FIGS. 2 and 5 indicate a joining line of the parting seal 6 to the terminal base portion 18 of the corner connecting portion 5. Further, in FIG. 5, a string-shaped highly foamed soft sealing material (for example, a material called "Ept Sealer" manufactured by Nitto Denko Corporation) is provided at the inner corner of the gradual change connecting portion 17 in the corner connecting portion 5. ) 26 is pasted.

Therefore, according to the structure of the door weather strip 2 configured in this way, when focusing on the upper side corresponding portion 3 in the state where the rear door 1 shown in FIG. 1 is closed, as shown in FIG. 3, it is hollow. Both the seal lip 10 and the sub-seal lip 11 come into contact with the vehicle body panel 7 and bend and deform, so that the inside and outside of the vehicle are sealed in the form of a so-called double seal.

Then, as is clear from FIG. 5, the sub-seal lip 11 including the sub-seal lip extension portion 11a on the corner connection portion 5 side and the panel lip 12 including the panel lip extension portion 12a on the corner connection portion 5 side are provided. A concave groove 13 including a concave groove extension portion 13a such as a so-called drip channel is formed between them. In this case, since the upper side portion of the rear door 1 is close to a horizontal state when viewed from the side, rainwater or the like tends to collect in the concave groove 13 including the concave groove extension portion 13a in the upper side corresponding portion 3 of the door weather strip 2. be.

On the other hand, when the rear door 1 to which the door weather strip 2 is attached is opened as shown in FIG. 1, depending on the momentum or the like when opening the rear door 1, as shown in FIG. 5, the upper side corresponding portion 3 of the door weather strip 2 Rainwater or the like collected in the concave groove 13 moves to the concave groove extension portion 13a side on the corner connecting portion 5 side. On the other hand, since the front end portion of the concave groove extension portion 13a is blocked by the impermeable wall 21, rainwater or the like of the concave groove extension portion 13a can flow from the drain hole 22 to the front vertical side portion and corner of the door sash 1a. It falls into the space between the connection portion 5 and the terminal base portion 18. In this space, since the guide rib 23 is formed below the drain hole 22, rainwater or the like that has fallen from the drain hole 22 is changed in direction by the guide rib 23 so as to run down the guide rib 23. It is guided to the rear side.

As shown in FIG. 5, the guide rib 23 is interrupted before the locking portion 20b of the clip 20, but the door sash 1a is formed at a portion where the guide rib 23 and other ribs 19 are interrupted around the locking portion 20b. The embossed portion on the vertical side portion on the front side of the terminal is in direct contact with the back surface of the terminal base portion 18. Therefore, the rainwater or the like that has fallen down the guide rib 23 is temporarily held in the gap between the embossed portion and the terminal base portion 18, and then further carried down to the rear side, so that the back seal lip extension portion 24 of the terminal base portion 18 is held. It is accepted at.

The rainwater or the like received by the back seal lip extension portion 24 is guided along the back seal lip extension portion 24 or the bent lip 24a. FIG. 6 is a schematic explanatory view for explaining the function of the vertical side corresponding portion 4a including the corner connecting portion 5 of FIG. The back seal lip extension portion 24 of the terminal base portion 18 at the corner connection portion 5 is continuous with the back seal lip 16 of the vertical side corresponding portion 4a of the door weather strip 2 as shown in FIGS. There is. Therefore, the rainwater or the like induced by the back seal lip extension portion 24 of the terminal base portion 18 finally reaches the hollow seal lip 15 and the back seal of the vertical side corresponding portion 4a as shown by the arrow M in FIG. It is discharged to the outside in the form of running down the groove-shaped space 27 formed between the lip 16 and the lip 16. Note that FIG. 6 shows the flow of water in the form of using the arrow M and the water droplet D in combination.

As described above, according to the present embodiment, the concave groove extension portion 13a on the corner connecting portion 5 side continuous with the concave groove 13 on the upper side corresponding portion 3 side of the door weather strip 2 is blocked by the impermeable wall 21. Since the drainage hole 22 is formed in the vicinity of the rear side of the impermeable wall 21, rainwater or the like collected in the concave groove 13 including the concave groove extension portion 13a is collected between the corner connecting portion 5 and the door sash 1a. It can be effectively drained downward through the gap between them. Therefore, when the rear door 1 is opened, it is possible to prevent rainwater or the like from falling from the front end of the upper side portion of the door sash 1a to the indoor side.

Further, rainwater or the like that has fallen from the drain hole 22 is guided to the back seal lip extension portion 24 side by the guide rib 23, and finally, as shown in FIG. 6, the hollow seal lip 15 of the vertical side corresponding portion 4a Since the water is drained using the groove-shaped space 27 formed between the back seal lip 16 and the back seal lip 16, rainwater or the like passes through the back side of the mounting base 14 of the vertical side corresponding portion 4a as water and wraps around the room as in the conventional case. It will not invade inside.

Further, as shown in FIGS. 5 and 6, the impermeable wall 21 is formed diagonally from the concave groove extension portion 13a side, and even if the sub-seal lip extension portion 11a is bent and deformed, the impermeable wall 21 is formed. Since the height is set in advance so as not to interfere with each other, the sealing lip of the parting seal 6 does not cause an increase in the bending reaction force of the sub-seal lip extension portion 11a due to the provision of the impermeable wall 21. It does not affect the bending reaction force of 6b. Therefore, while maintaining the function of the impermeable wall 21, the sealing functions required for the seal lip 6b of the sub-seal lip extension portion 11a and the parting seal 6 can be independently maintained.

FIG. 7 is a diagram showing a second embodiment of the door weather strip 2 according to the present invention, and the same reference numerals are given to the parts common to those in FIG.

The second embodiment shown in FIG. 7 differs from FIG. 5 in that the positions of the impermeable wall 21 and the drain hole 22 are shifted to the rear side. A relatively long guide rib 33 that also serves as a reinforcing rib 19 is located directly below the drain hole 22 shown in FIG. 7, and the lower end of the guide rib 33 extends close to the rear seal lip extension portion 24. ..

Therefore, rainwater or the like blocked by the impermeable wall 21 of the concave groove extension portion 13a falls from the drain hole 22 and is guided to the back seal lip extension portion 24 so as to run down the guide rib 33. Therefore, as compared with the one shown in FIG. 5, the effect of inducing rainwater or the like by the guide rib 33 becomes more effective.

Here, in each of the above embodiments, the rear door 1 of a so-called 4-door type vehicle has been described as an example, but it may be similarly applied to the door of a 2-door vehicle as well as the front door depending on the modeling of the entire vehicle body. can.

1 ... Rear door 2 ... Door weather strip 3 ... Upper side equivalent part 4a ... Vertical side equivalent part 5 ... Corner connection part 6 ... Parting seal 18 ... Terminal base part 11 ... Sub seal lip 12 ... Panel lip 13 ... Recessed groove 11a ... Sub Seal lip extension 12 ... Panel lip extension 13 ... Recessed groove extension 16 ... Back seal lip 21 ... Impermeable wall 22 ... Drain hole 23 ... Guide rib 24 ... Back seal lip extension 33 ... Guide rib

Claims (4)

For automobile door weather strips that are attached to the periphery of automobile doors
The plate-shaped terminal base portion is forward while connecting the upper side equivalent portion along the upper side portion of the door, the vertical side equivalent portion along the front vertical side portion of the door, and the upper side equivalent portion and the vertical side equivalent portion. It is a structure of an automobile door weather strip provided with a corner connection portion integrally formed on the side.
On the back surface of the terminal base portion, the sub-seal lip and the panel lip on the back surface of the upper side corresponding portion are extended in two upper and lower stages, and the sub-seal lip extension portion and the panel lip extension portion are on the upper side corresponding portion side. While a continuous concave groove extension is formed in the concave groove of
At the front end of the back surface of the terminal base portion, a water-impervious wall that blocks the space of the recessed groove extension portion and a drain hole adjacent to the rear side of the impermeable wall are formed.
On the lower side of the drain hole on the back surface of the terminal base portion, an inclined guide rib for guiding the water falling from the drain hole to the rear side is formed.
An automobile door weather strip characterized in that the impermeable wall is set to a height that does not interfere with the sub-seal lip extension portion when it is bent and deformed. A rear seal lip extension portion continuous with the rear seal lip on the side corresponding to the vertical side is formed in the inner corner portion on the rear side of the back surface of the terminal base portion, and the guide rib is the rear seal lip extension portion. The automobile door weather strip according to claim 1, wherein the door weather strip extends toward. The automobile door weather strip according to claim 2, wherein the guide rib extends close to the rear seal lip extension portion. The door to which the above-mentioned automobile door weather strip is attached is a rear door.
The claim is characterized in that a parting seal for sealing between the rear door and the front door is integrally formed so as to hang down from a portion of the terminal base portion excluding the sub-seal lip extension portion. 2 or 3 Automotive Door Weather Strip.

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