JP2010179722A - Weather strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a product capable of being strongly mounted on a flange part and always stabilizing the shape of a mounting base part, in a weather strip mounted on the flange part via a double-sided adhesive tape. <P>SOLUTION: This weather strip 10 includes the mounting base part 11 provided with a flat-plate shaped vehicle outside wall 11a mounted on a side face of the flange part 1a formed along a door opening edge of a body panel 1 of an automobile via the double-sided adhesive tape 3, and a hollow seal part 14 formed integrally with the mounting base part 11 to be in elastic contact with a door panel 2. A vehicle outside wall 11a of at least the mounting base part 11 is formed of a sponge material. A planar hard material 12 which is harder than a material constituting the mounting base part 11 and is formed with a plurality of cutout parts 13 at prescribed intervals to be extendable in the longitudinal direction and width direction is buried at the vehicle outside wall 11a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a weather strip that is attached along a door opening edge formed in a body panel of an automobile.

Conventionally, as shown in FIGS. 6 and 7, a weather strip 20 is attached to a body panel 1 of an automobile via a double-sided adhesive tape 3 on a side surface of a flange portion 1 a formed along the door opening edge. It has been. The weather strip 20 having such a configuration includes an attachment base portion 21 attached to the flange portion 1 a and a hollow seal portion 22 that elastically contacts the door panel 2. The mounting base 21 shown here has a substantially L-shaped cross section comprising a vehicle outer wall 21a and a vertical wall 21b extending substantially perpendicular thereto, and the vehicle outer wall 21a and the side surface of the flange portion 1a are fixed by a double-sided adhesive tape 3. Yes. Usually, the attachment base 21 is formed of a solid material of EPDM rubber or thermoplastic elastomer, and the sealing surface of the hollow seal portion 22 is formed of a sponge material of EPDM rubber or thermoplastic elastomer (see, for example, Patent Document 1).
JP 2006-205847 A

  Such a conventional weatherstrip 20 has the advantage that the attachment base 21 is made of a solid material, so that it has high rigidity and can be strongly attached to the flange portion 1 a via the double-sided adhesive tape 3.

  However, in the conventional weatherstrip 20, the base end portion 21c located on the opposite side of the front end of the flange portion 1a of the mounting base portion 21 at the corner portion C above the rear portion of the front door as shown in FIG. Therefore, as shown in FIG. 8, the hollow seal portion 22 falls to the inner peripheral side (the tip end side of the flange portion 1a) in the direction of the arrow. The problem that occurs occurs. In FIG. 8, hatching in the cross section is omitted.

  In order to solve these problems, it is conceivable that the attachment base 21 is formed of a sponge material that is easy to stretch. However, if the attachment base 21 is formed of a sponge material, there is no rigidity like a solid material. The problem that it cannot be installed occurs. Moreover, the problem that the shape of the attachment base 21 of the weatherstrip 20 to be extruded is not stable occurs.

  Therefore, an object of the present invention is to provide a product that can be firmly attached to a flange portion in a weather strip that is attached to the flange portion via a double-sided adhesive tape, and the shape of the attachment base portion is always stable. It is in.

  In order to achieve the above object, a weather strip according to claim 1 of the present invention is provided with a double-sided adhesive tape on a side surface of a flange portion (1a) formed along a door opening edge of a body panel (1) of an automobile. (3) A mounting base portion (11) having a flat plate-like vehicle outer wall (11a) attached via a hollow seal portion (14) integrally formed with the mounting base portion (11) and elastically contacting the door panel (2). A weather strip (10) including at least a vehicle outer wall (11a) of the mounting base (11) made of a sponge material, and the mounting base (11) formed on the vehicle outer wall (11a). A plate-like hard material (12) having a plurality of holes or a plurality of notches (13) formed at predetermined intervals so as to be harder than the material to be stretched in the longitudinal direction and the width direction is embedded.

  The “sponge material” includes a so-called solid material with good elongation, which is a fine foam with a small amount of foaming and a specific gravity close to that of a solid material.

  The weather strip according to claim 2 is a flat plate attached to the side surface of the flange portion (1a) formed along the door opening edge of the body panel (1) of the automobile via a double-sided adhesive tape (3). A mounting base (11) having a substantially L-shaped section consisting of a vehicle outer wall (11a) and a vertical wall (11b) extending substantially perpendicular to the vehicle outer wall (11a), and the mounting base (11). A weather strip (10) having a hollow seal portion (14) formed integrally and elastically contacting the door panel (2), wherein at least the vehicle exterior wall (11a) and the vertical wall (11b) of the mounting base portion (11) are sponged. In addition, a hard material (12) that is harder than the material constituting the mounting base (11) and has a substantially L-shaped cross section is embedded in the outer wall (11a) and the vertical wall (11b). Hard material (1 ) Of the mounting base (11) in the vehicle exterior hard wall (12a), which is a portion embedded in the vehicle exterior wall (11a), and the vehicle exterior rigid portion (12a) can be expanded and contracted in the longitudinal and width directions. Alternatively, a plurality of notches (13) are formed at predetermined intervals.

  Furthermore, the weather strip according to claim 3 is characterized in that the plurality of holes or the plurality of notches (13) are alternately formed on the left and right sides in the longitudinal direction of the hard material (12).

  The weather strip (10) according to claim 4 is characterized in that a recess (25) is formed inside the connecting portion between the vehicle outer wall (11a) and the vertical wall (11b) of the mounting base (11). And

  Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and the best mode for carrying out the invention described later.

According to the weather strip of the first aspect of the present invention, at least the vehicle outer wall of the mounting base is formed of a sponge material, and the vehicle outer wall can be expanded or contracted in the longitudinal direction and the width direction with a plurality of holes or a plurality of holes. Since the plate-shaped hard material in which the notch portions are formed at predetermined intervals is embedded, the vehicle outer wall can be smoothly followed along the shape of the corner portions, particularly in the corner portions.
This can prevent the hollow seal portion from falling and wrinkling.

In addition, since the hard material embedded in the vehicle outer wall of the mounting base is harder than the material constituting the mounting base, the interior has high rigidity, and therefore the weather strip is firmly attached to the flange. Can do.
In addition, by embedding a hard material in the outer wall of the vehicle, the shape of the sponge material existing around the hard material can be stabilized during extrusion, thereby stabilizing the overall shape of the outer wall of the vehicle. Can do.

According to the weather strip of claim 2, the vehicle outer wall and the vertical wall constituting the substantially L-shaped portion of the mounting base portion are formed of sponge material, and the vehicle outer wall and the vertical wall are attached to the vehicle outer wall and the vertical wall. Since a hard material that is harder than the material constituting the base portion and has a substantially L-shaped cross section is embedded, even if the attachment base portion is formed of a sponge material, the rigidity is maintained and the weather strip can be firmly attached to the flange portion. .
In addition, by embedding the hard material in the mounting base, the shape of the sponge material existing around the hard material can be stabilized at the time of extrusion molding, so that the overall shape of the vehicle outer wall can be stabilized. .
Furthermore, a plurality of holes or a plurality of notches are formed at a predetermined interval in the hard part outside the vehicle, which is a portion embedded in the vehicle outer wall of the mounting base of the hard material, so that the hard part outside the vehicle can expand and contract in the longitudinal direction and the width direction. Therefore, together with the mounting base portion formed of sponge material, the mounting base portion can be made to follow smoothly along the shape of the corner portion, particularly at the corner portion, thereby preventing the hollow seal portion from rolling and wrinkling. be able to.

Further, according to the weather strip of the third aspect, in addition to the function and effect of the invention of the first or second aspect, the plurality of holes or the plurality of notches are alternately left and right toward the longitudinal direction of the hard material. Therefore, the entire vehicle outer wall can be uniformly deformed.
Thereby, the vehicle outer wall can be further easily deformed along the shape of the corner portion, and the followability to the corner portion can be further enhanced.

  According to the weather strip of the fourth aspect, in addition to the function and effect of the invention of the second or third aspect, the concave portion is formed inside the connecting portion between the vehicle outer wall and the vertical wall of the mounting base. The followability at the corner is improved.

(First embodiment)
With reference to FIG. 1 and FIG. 2, the weather strip 10 which concerns on 1st embodiment of this invention is demonstrated. FIG. 1 shows a weather strip according to the first embodiment, and is an enlarged cross-sectional view taken along line AA of FIG. 2 is a plan view showing a hard material embedded in the weather strip shown in FIG. In addition, the same code | symbol was attached | subjected to the same part as what was shown in the prior art example.

A weather strip 10 according to an embodiment of the present invention is attached to a side surface on the vehicle outer side of a flange portion 1a formed along a door opening edge of a body panel 1 of an automobile via a double-sided adhesive tape 3, and an attachment base portion. 11 and a hollow seal portion 14.
The mounting base 11 has a substantially L-shaped cross section including a flat vehicle outer wall 11a and a flat vertical wall 11b substantially orthogonal thereto. The hollow seal portion 14 is integrally formed with the mounting base portion 11 and elastically contacts the door panel 2 to ensure a sealing property between the body panel 1 and the door panel 2.

  The weather strip 10 also includes a lip portion 15 that abuts against the interior trim 4. Further, a recess 25 is formed on the inner side of the connecting portion between the vehicle outer wall 11a and the vertical wall 11b of the mounting base 11.

The entire mounting base 11 including the vehicle outer wall 11a, that is, the vehicle outer wall 11a and the vertical wall 11b are formed of sponge material such as sponge rubber, and a flat hard material 12 is embedded in the vehicle outer wall 11a. is doing.
The hard material 12 is harder than a sponge material that is a material constituting the mounting base 11, and is made of, for example, a resin such as polyethylene or polypropylene, or a metal such as aluminum.
The hard material 12 has a plurality of notches 13 formed alternately at right and left at predetermined intervals in the longitudinal direction of the hard material 12 so that the hard material 12 can expand and contract in the longitudinal direction and the width direction. In addition, although the one end (left end or right end) of each notch part 13 is formed in the open state as the open part 13a, it can also be set as a some hole as a closed state.

  In the weather strip 10 configured as described above, the vehicle outer side wall 11a of the mounting base 11 is formed of a sponge material in which the hard material 12 is embedded, so that the vehicle outer side wall 11a is appropriately extended by the action of the sponge material. Can do. Thereby, since the vehicle outer side wall 11a can be made to follow the shape of the corner part C, it is possible to prevent the hollow seal part 14 from falling and to prevent a situation in which wrinkles occur in the hollow seal part 14 in advance. it can. That is, even in the corner portion C above the rear portion of the front door as shown in FIG. 6, the base end portion 11c of the mounting base portion 11 located on the side opposite to the front end of the flange portion 1a extends sufficiently. It can follow the shape sufficiently.

  In addition, since the plurality of notches 13 are alternately formed in the left and right at regular intervals in the hard material 12 so as to expand and contract, the vehicle outer side wall 11a can be easily deformed. Thereby, since the vehicle outer side wall 11a can be made to follow smoothly along the shape of the corner part C, the fall of the hollow seal part 14 and generation | occurrence | production of a wrinkle can be prevented further effectively.

  Moreover, since the vehicle outer side wall 11a embedded with the hard material 12 that is harder than the material constituting the mounting base portion 11 has appropriate rigidity, it is firmly attached to the flange portion 1a via the double-sided adhesive tape 3. Can do. Further, since the hard material 12 is embedded in the vehicle outer wall 11a, the shape of the sponge material existing around the hard material 12 can be stabilized at the time of extrusion molding, and thus the overall shape of the vehicle outer wall 11a. Can be stabilized.

  Further, since the entire weather strip 10 is formed of a sponge material, the weight can be reduced and the molding can be easily performed as compared with a case where a solid material is used for the mounting base 11. Demonstrate.

(Second embodiment)
Next, with reference to FIG. 3 and FIG. 4, the weather strip 10 which concerns on 2nd embodiment of this invention is demonstrated. FIG. 3 shows a weather strip according to the second embodiment, and is an enlarged sectional view taken along line AA of FIG. FIG. 4 is a perspective view showing a hard material embedded in the weather strip shown in FIG.

The weather strip 10 according to the present embodiment is characterized in that the entire mounting base 11 including the vehicle outer wall 11a and the vertical wall 11b is formed of a sponge material S, and the hard material 12 has a substantially L-shaped cross section. Embedded in both the vehicle outer wall 11a and the vertical wall 11b.
Further, the cutout portion 13 is formed only in the vehicle outside hard portion 12a which is a portion embedded in the vehicle outer wall 11a of the hard material 12. The cutout portion 13 is formed in an open state in which an open portion 13a is formed at one end thereof.

  In this case, the vertical hard portion 12b, which is a portion embedded in the vertical wall 11b of the hard material 12, is not specifically formed with the notches 13 or holes, but the plurality of notches 13 and the vertical hard portion 12b are also formed. By forming a plurality of holes, the stretchability can be improved, the followability at the corner portion C can be improved, and the weight can be reduced.

  As in the first embodiment, the weather strip 10 can more effectively prevent the hollow seal portion 14 from rolling and wrinkling at the corner portion C. Further, since the hard material 12 has a substantially L-shaped cross section and is embedded in the vertical wall 11b together with the vehicle outer wall 11a of the mounting base 11, the shape of the vertical wall 11b of the weather strip mounting base 11 formed by extrusion molding is also It can be stabilized.

  In addition, since the notch part 13 is formed in the vehicle outside hard part 12a which is a part embedded in the vehicle outer side wall 11a of the hard material 12, the good followability of the mounting base part 11 can be maintained as it is, and the hollow seal part The occurrence of 14 rolls and wrinkles can be more effectively prevented.

  Further, since the weather strip 10 is entirely formed of the sponge material S, the weight reduction can be promoted and the molding is easy.

(Third embodiment)
With reference to FIG. 5, the weather strip which concerns on 3rd embodiment of this invention is demonstrated. FIG. 5 shows a weather strip according to the third embodiment, and is an enlarged cross-sectional view taken along line AA of FIG.

  In the weather strip 10, the mounting base 11 is formed only by a flat plate-like vehicle outer wall 11a, and a flat plate-like hard material 12 is embedded in the vehicle outer wall 11a. Moreover, the whole including the attachment base 11 is formed of a sponge material, and the hard material 12 has a shape shown in FIG.

  The weather strip 10 can also prevent the hollow seal portion 14 from rolling and wrinkling at the corner portion C. Further, since a material for forming the vertical wall 11b is not required, there is an advantage that the weight can be reduced and the material cost can be reduced.

  The hard material 12 embedded in the mounting base 11 of the weather strip 10 according to the first to third embodiments has a plurality of notches 13 formed therein, but the installation positions of the plurality of notches 13 are as follows. The shape is not specified, and any shape can be used as long as the hard material 12 can expand and contract in the longitudinal direction and the width direction. It is also possible to make the hard material 12 stretchable by forming a plurality of holes instead of or in combination with the plurality of notches 13.

The weather strip which concerns on 1st embodiment of this invention is shown, and it is the AA line expanded sectional view of FIG. It is a top view which shows the hard material embed | buried under the weather strip shown in FIG. The weather strip which concerns on 2nd embodiment of this invention is shown, and it is an AA line expanded sectional view of FIG. It is a perspective view which shows the hard material embed | buried under the weather strip shown in FIG. The weather strip which concerns on 2nd embodiment of this invention is shown, and it is an AA line expanded sectional view of FIG. It is a side view which shows a motor vehicle. The weather strip which concerns on a prior art example is shown, and it is an AA line expanded sectional view of FIG. It is sectional drawing which shows the state of the rolling in the corner part of the weather strip which concerns on a prior art example.

DESCRIPTION OF SYMBOLS 1 Body panel 1a Flange part 2 Door panel 3 Double-sided adhesive tape 4 Interior trim 10 Weather strip 11 Mounting base part 11a Car outer side wall 11b Vertical wall 11c Base end part 12 Hard material 12a Car external hard part 12b Vertical hard part 13 Notch part 13a Opening part 14 Hollow seal portion 15 Lip portion 20 Weather strip 21 Mounting base portion 21a Car outer wall 21b Vertical wall 21c Base end portion 22 Hollow seal portion 25 Recessed portion C Corner portion

Claims (4)

A mounting base having a flat plate-like vehicle outer wall attached to a side surface of a flange portion formed along a door opening edge of a body panel of an automobile via a double-sided adhesive tape, and integrally formed with the mounting base and elastically mounted on the door panel. A weatherstrip having a hollow seal portion in contact therewith,
At least the outer wall of the mounting base is formed of sponge material, and the outer wall of the mounting base is harder than the material constituting the mounting base, and can be expanded and contracted in the longitudinal direction and the width direction. A weatherstrip, characterized in that a plate-like hard material is embedded at a predetermined interval. A cross-section approximately L comprising a flat plate-like vehicle outer wall attached to the side surface of a flange portion formed along the door opening edge of a body panel of an automobile via a double-sided adhesive tape and a vertical wall extending substantially perpendicular to the vehicle outer wall. A weather strip comprising a mounting base provided with a letter-shaped portion, and a hollow seal portion formed integrally with the mounting base and elastically contacting the door panel;
At least the vehicle outer wall and the vertical wall of the mounting base are formed of a sponge material, and a hard material that is harder than the material constituting the mounting base and has a substantially L-shaped cross section is embedded in the vehicle outer wall and the vertical wall. A plurality of holes or a plurality of notches are formed at predetermined intervals on the hard portion outside the vehicle, which is a portion embedded in the vehicle outer wall of the mounting base of the hard material, so that the hard portion outside the vehicle can expand and contract in the longitudinal direction and the width direction. A weatherstrip that is characterized by   The weather strip according to claim 1 or 2, wherein the plurality of holes or the plurality of notches are alternately formed on the right and left sides in the longitudinal direction of the hard material.   The weather strip according to claim 2 or 3, wherein a concave portion is formed inside the connecting portion between the vehicle outer wall and the vertical wall of the mounting base.

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