JP2009262813A - Door structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure of an automobile, assembling a door trim for pressing a sound insulating sheet on a door securely. <P>SOLUTION: In this door structure of the automobile, the door trim 12 for interior decoration is attached onto a vehicle interior side of a door inner panel 11, a belt line inner weather strip 15 forming seal lip parts 17, 18 coming into slide-contact with door glass G attached along a belt line is attached to the door inner panel 11 or the door trim 12, and the sound insulating sheet 20 is provided between the door inner panel 11 and the door trim 12 by suspending it from an upper side to a lower side like a screen. A hollow sealing member 30 for pressing the sound insulating sheet 20 against a door inner panel 11 side when assembling, is attached to the door inner panel 11 side of the door trim 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automobile door structure in which a door trim is attached to a door inner panel.

As shown in FIGS. 5 to 7, conventionally, as a measure against sound insulation inside the door D, a sound insulation is provided between the door inner panel 11 and the interior door trim 12 attached to the inner side of the door inner panel 11. 2. Description of the Related Art A door structure for an automobile is known in which an adhesive sheet 20 is provided so as to hang from the upper side to the lower side (for example, Patent Document 1 and Patent Document 2).
JP 2003-252054 A JP 2004-74818 A

  As shown in FIG. 6, the sound insulation sheet 20 is fixed to the beltline inner weather strip 15 attached to the door trim 12 as shown in FIG. As shown, there is a type in which the upper end of the sound insulating sheet 20 is inserted and fixed to an attachment mechanism 14 provided on a beltline inner weather strip 15 attached to the upper portion of the door inner panel 11.

  The beltline inner weather strip 15 is attached along the beltline, and includes an attachment base portion 16, upper and lower seal lip portions 17, 18 that are in sliding contact with the door glass G that is raised and lowered from the inside of the vehicle, and the seal lip portion 17, The support part 19 which supports 18 is provided. The door trim 12 is fixed to the door inner panel 11 with a clip C.

  According to this, since the two spaces X and Y are formed between the door inner panel 11 and the door trim 12 via the sound insulating sheet 20, felt, urethane, pad material, sound insulating cover, etc. are provided on the back surface of the door trim 12. The sound insulation is improved as compared with the provided one, and the sound insulation sheet 20 can be provided simply by hanging it from the upper side to the lower side, so that the assembling work is simple.

  In particular, in the invention described in Patent Document 2, as shown in FIG. 8, which is an enlarged cross-sectional view taken along line B-B in FIG. 5, a protrusion 21 is provided on the outer peripheral portion of the door trim 12 on the door inner panel 11 side. The sound insulation sheet 20 is pressed to the door inner panel 11 side at the tip of the portion 21 to enhance the sound insulation.

In Patent Document 3, a sound insulating sheet is not pressed by a door trim, a transparent film is thermally welded to the outer periphery of the sound insulating sheet, and the outer peripheral edge of the film is attached to the door inner panel with a sealer (adhesive). The attachment is disclosed.
JP 2005-82064 A

However, as shown in FIG. 8, when the sound insulating sheet 20 is pressed against the door inner panel 11 by the protrusion 21 provided on the outer periphery of the door trim 12 on the door inner panel 11 side, the protrusion 21 protrudes. When the length or the thickness of the sound insulating sheet 20 to be pressed varies, the door trim 12 may float, and the assembly of the door trim 12 to the door D may be insufficient.
Further, when the sound insulating sheet 20 is attached, using a film or a sealer (adhesive) increases the cost and complicates the attaching operation.

  Therefore, an object of the present invention is to provide an automotive door structure that can reliably attach a door trim that presses a sound insulating sheet to a door.

In order to achieve the above object, according to a first aspect of the present invention, an interior door trim (12) is attached to the inner side of a door inner panel (11) and is attached along a belt line. A beltline inner weather strip (15) formed with a seal lip portion (17, 18) in sliding contact with the glass (G) is attached to the door inner panel (11) or the door trim (12), and the door inner panel (11 ) And the door trim (12), a soundproof sheet (20) is provided so as to hang from the upper side to the lower side in a goodwill shape,
A hollow seal member (30) that presses the sound insulating sheet (20) toward the door inner panel (11) during assembly is attached to the door inner panel (11) side of the door trim (12). .

  The invention according to claim 2 is the invention according to claim 1, wherein the hollow seal member (30) includes a mounting base (31) having a substantially U-shaped cross section, the mounting base (31) being It attaches to the projection part (35) extended from the said door trim (12) to the door inner panel (11) side, It is characterized by the above-mentioned.

  Further, the invention according to claim 3 is the invention according to claim 2, wherein the projection (35) is provided inside the door inner panel (11) of the door trim (12) and the door trim (12). The door inner panel (11) side outer side is provided with a pressing piece (36) for pressing the sound insulating sheet (20) together with the hollow sealing member (30).

  The invention according to claim 4 is the invention according to claim 3, characterized in that a sealing material (37) is provided at the tip of the pressing piece (36).

  According to a fifth aspect of the present invention, in the first aspect of the present invention, a portion of the door inner panel (11) where the hollow sealing member (30) presses the sound insulating sheet (20) A concave portion (11a) that opens toward the concave portion is formed, and a gap (M) is formed between the hollow seal member (30) and the concave portion (11a) during the pressing. To do.

  Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.

According to the door structure for an automobile of the invention according to claim 1, the door inner panel side of the door trim with respect to the sound insulating sheet provided so as to hang from the upper side to the lower side between the door inner panel and the door trim. Since the sound insulation sheet is pressed against the door inner panel side by elastically contacting the hollow seal member provided on the door, even if variations occur in the thickness of the sound insulation sheet, such variations are absorbed by the deflection of the hollow seal member. The
As a result, it is possible to reduce the possibility of a problem in assembling performance of the door trim with respect to the door, and the door trim can be reliably assembled to the door.
Further, since the sound insulating sheet is securely pressed by the hollow seal member, it is not necessary to use, for example, a film or a sealer (adhesive) as described in the prior art for mounting the sound insulating sheet. Therefore, the cost can be reduced and the complication at the time of attaching the sound insulating sheet is eliminated.

  According to the automobile door structure of the invention according to claim 2, the hollow seal member includes the mounting base portion having a substantially U-shaped cross section, and the mounting base portion is attached to the protrusion extending from the door trim to the door inner panel side. Therefore, as compared with the case where the hollow seal member is attached to the door trim with a double-sided tape or the like, the attachment position is stabilized and the attachment itself is also stabilized.

  Furthermore, according to the automobile door structure of the invention of claim 3, the sound insulating sheet is pressed against the door inner panel side by the hollow seal member, and from the outside, the door inner panel side of the door trim is provided. Since it is pressed to the door inner panel side also by the pressing piece provided on the outside, the sound insulating sheet is firmly attached.

  Furthermore, according to the automobile door structure of the invention according to claim 4, since the sealing material is provided at the tip of the pressing piece, the sealing function is improved.

  According to the automobile door structure of the invention according to claim 5, the door inner panel portion where the hollow seal member presses the sound insulating sheet is formed with a recess opening toward the inside of the vehicle, and the pressing In some cases, a gap is formed between the hollow seal member and the recess, so that water that has entered from the outside of the passenger compartment can be released to the lower side of the vehicle and the sealing function is improved.

The appearance of the automobile door structure according to the embodiment of the present invention is the same as that of FIG. 5 shown in the conventional example, and the AA line enlarged cross section is the same as that of FIG. 5 shown in the conventional example.
What is different from the conventional example is the cross section of the side part and the lower part of the door D, and the main part of the door structure for an automobile according to the embodiment of the present invention is as shown in FIGS. Here, FIG. 1 is an enlarged sectional view taken along line BB in FIG. 5, and FIG. 2 is an enlarged sectional view taken along line EE in FIG.

This automobile door structure is similar to that shown in FIGS. 5 and 6 of the conventional example. In the front door D of the automobile, the door trim for the interior is provided on the inner side of the door inner panel 11 which is the inner side of the belt line portion of the automobile. 12 is attached, and a beltline inner weather strip 15 attached along the beltline is attached to the door trim 12.
A sound insulating sheet 20 is provided between the door inner panel 11 and the door trim 12 so as to hang from the upper side to the lower side, and two spaces X and Y are provided between the door inner panel 11 and the door trim 12. The sound insulation effect is improved by forming.

The belt line inner weather strip 15 is formed of an attachment base portion 19 and upper and lower seal lip portions 17 and 18 slidably in contact with the door glass G that is raised and lowered from the vehicle interior side. It is attached by being fitted into the formed recess.
The material of the sound insulating sheet 20 is not particularly limited, but is preferably a cloth shape with high sound absorption. As a commercially available product, for example, “Synthrate (trade name)” manufactured by Sumitomo 3M Co., Ltd. can be mentioned. In addition, as long as it is a sheet form, it may be made of a thermosetting material such as rubber or a thermoplastic material such as polyethylene, polypropylene or nylon. However, from the viewpoint of sound insulation performance, a rubber foam, particularly an EPDM rubber having a specific gravity of about 0.05 to 0.4 is preferable. Here, a sponge sheet (thickness 2 to 6 mm) made of EPDM rubber and having a specific gravity of 0.05 to 0.4 is used.
Moreover, although it is more effective to set the sound-insulating sheet 20 on the entire surface of the door inner panel 11, a sufficient sound-insulating effect can be obtained even if the height is about 1/3 to 2/3 of the height.

And the hollow seal member 30 is provided in the door inner panel 11 side outer peripheral part of the door trim 12 over the rear side part of the door D, a lower part, and the front side part as shown in FIG.1 and FIG.2.
The hollow seal member 30 has a mounting base portion 31 and a hollow portion 32 that are substantially U-shaped in cross section and are integrally formed. The attachment base 31 is attached so that the opening of the attachment base 31 is fitted to a protrusion 35 extending from the door trim 12 to the door inner panel 11 side on the inner side of the door trim 12 on the door inner panel 11 side. Further, when the door trim 12 is assembled to the door D, the hollow portion 32 elastically contacts the sound insulating sheet 20 and presses the sound insulating sheet 20 toward the door inner panel 11 side. In addition, it is preferable that the specific gravity of the hollow part 32 is 1 or less.

  Further, a pressing piece 36 that presses the sound insulating sheet 20 toward the door inner panel 11 side is provided along with the hollow seal member 30 on the outer periphery of the door trim 12 on the door inner panel 11 side. The pressing piece 36 is formed by curving the end of the door trim 12 toward the door inner panel 11, and the length thereof is longer than the protruding portion 35, and the hollow seal member 30 is attached to the protruding portion 35. Is approximately equal to the length of

  Further, as shown in FIG. 1, in the side portion of the door D, the portion of the door inner panel 11 with which the hollow seal member 30 is elastically contacted is a flat surface without unevenness, but in the lower portion of the door D, FIG. ), A recess 11a that opens toward the inside of the vehicle is formed in a portion of the door inner panel 11 where the hollow seal member 30 presses the sound insulating sheet 20. When the sound insulating sheet 20 is pressed by the hollow seal member 30, a gap M is formed between the hollow seal member 30 and the recess 11a so that water that has entered from the outside of the passenger compartment is released from the gap M to the lower outside of the vehicle. I have to.

  Here, the size and shape of the hollow seal member 30 and the concave portion 11a are such that when the hollow seal member 30 presses the sound insulating sheet 20, the hollow seal member 30 and the concave portion 11a are positioned between the door insulating member 12 and the door trim 12 side. Any configuration may be used as long as a gap M through which water flows from the surface to the recess 11a is formed. In the present embodiment, the width of the hollow portion 32 constituting the hollow seal member 30 is made smaller than the width of the concave portion 11a having a substantially U-shaped cross section. Of the portions P1 and P2, it is elastically contacted to the inside of the end portion P2 on the vehicle outer side, and a clearance M is formed from the elastic contact force toward the bottom of the recess portion 11a from the hollow portion 32 and the end portion P1 on the vehicle interior side of the recess portion 11a. The degree is set.

According to the vehicle door structure described above, the door of the door trim 12 is opposed to the sound insulating sheet 20 provided between the door inner panel 11 and the door trim 12 so as to hang from the upper side to the lower side. The hollow sealing member 30 provided on the inner panel 11 side is elastically contacted to press the sound insulating sheet 20 toward the door inner panel 11 side, so that the thickness of the sound insulating sheet 20 varies or the protrusion to which the hollow sealing member 30 is attached Even if the length of the portion 35 varies, the variation is absorbed by the bending of the hollow portion 32.
As a result, the possibility of problems in the assembly of the door trim 12 with respect to the door D can be reduced.
Further, since the sound insulating sheet 20 is securely pressed by the hollow seal member 30, it is not necessary to use, for example, a film or a sealer (adhesive) for mounting the sound insulating sheet 20.

  Further, the sound insulating sheet 20 is pressed against the door inner panel 11 side by the hollow seal member 30, and from the outside, the pressing piece 36 provided on the outer side of the door inner panel 11 side of the door trim 12. Therefore, the sound insulating sheet 20 is firmly attached.

In the embodiment of the present invention, the enlarged sectional view taken along the line E-E in FIG. 5 is shown in FIG. 2A. Instead, the line E-E in FIG. 5 shown in FIG. As shown in the enlarged line sectional view, the door inner panel 11 is formed with a recess 11a that opens toward the inside of the vehicle, and both end portions P1 and P2 of the recess 11a are protruded toward the inside of the vehicle. May be elastically contacted to improve sealing performance.
Further, as shown in the enlarged cross-sectional view taken along the line EE of FIG. 5 shown in FIG. 2C, the door inner panel 11 is formed with a convex portion 11b that protrudes toward the inside of the vehicle, and on the outer side of the convex portion 11b. The hollow seal member 30 may be elastically contacted to improve sealing performance.
Further, as shown in the enlarged sectional view taken along the line E-E of FIG. 5 shown in FIG. 2D, the door inner panel 11 is formed with a convex portion 11b that protrudes toward the vehicle inner side, and on the inner side of the convex portion 11b. The hollow seal member 30 may be elastically contacted to improve sealing performance.

  Further, as shown in the enlarged sectional view taken along the line EE of FIG. 5 shown in FIG. 2 (e), the door inner panel 11 is formed with a recess 11a that opens toward the vehicle interior side, and the outer end P2 of the recess 11a. The hollow seal member 30 is elastically contacted with the projecting portion 11b to improve the sealing performance, and the water that has entered from the outside of the vehicle compartment is allowed to escape to the lower outside of the vehicle through the formed recess 11a. May be.

In the embodiment of the present invention, the pressing piece 36 is directly brought into contact with the sound insulating sheet 20, but as shown in FIG. 3, a sealing material 37 that covers the tip of the pressing piece 36 is provided. The sound insulating sheet 20 may be pressed against the door inner panel 11 through the sealing material 37.
Further, even if the pressing piece 36 is not provided or not provided, it is not used for pressing the sound insulating sheet 20, and only the hollow seal member 30 is elastically contacted with the sound insulating sheet 20 and pressed against the door inner panel 11 side. May be.

Further, in the embodiment of the present invention, the attachment base 31 of the hollow seal member 30 is fitted and attached to the projection 35 provided on the door trim 12, but any one can be attached to the door inner panel 11 side of the door trim 12. Such an attachment method may be used. For example, as shown in FIG. 4, the attachment base 41 of the hollow seal member 30 may be fixed to a double-sided tape 42 fixed to the door inner panel 11 side of the door trim 12.
According to this, it is not necessary to newly form the protrusion part 35 in the door trim 12, and it is not necessary to make the cross-sectional shape of the attachment base part 41 of the hollow seal member 30 into a substantially U shape.

  In addition, all about the both sides and lower part of the door D can also be set as a structure as shown in FIG.1 or FIG.2, FIG.3, FIG.4, and you may arrange | position in any combination.

In the embodiment of the present invention, as shown in FIG. 6, an example in which the beltline inner weather strip 15 is attached to the door trim 12 is shown. However, as shown in FIG. 7, the beltline is attached to the door inner panel 11. The present invention can also be applied to the one to which the inner weather strip 15 is attached.
In the embodiment of the present invention, the front door D is shown as an example, but the present invention can also be applied to a rear door (not shown).

FIG. 6 is an enlarged sectional view taken along line B-B in FIG. 5, showing a main part of the door structure for an automobile according to the embodiment of the present invention. It is the EE line expanded sectional view of Drawing 5 showing the important section of the door structure for cars concerning the embodiment of the present invention. FIG. 6 is an enlarged cross-sectional view taken along line B-B in FIG. 5, showing a main part of another automobile door structure according to the embodiment of the present invention. It is the BB expanded sectional view of FIG. 5 which shows the principal part of another door structure for motor vehicles based on embodiment of this invention. It is an external appearance perspective view which shows the door structure for motor vehicles. It is the AA line expanded sectional view of FIG. 5 which shows the door structure for motor vehicles. It is an AA line expanded sectional view of Drawing 5 showing another door structure for cars. It is the BB expanded sectional view of FIG. 5 which shows the principal part of the door structure for motor vehicles based on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Door inner panel 11a Concave part 11b Convex part 12 Door trim 15 Beltline inner weather strip 16 Attachment base part 17,18 Seal lip part 19 Support part 20 Sound insulation sheet 21 Protrusion part 30 Hollow seal member 31 Attachment base part 32 Hollow part 35 Protrusion part 36 Pressing piece 37 Sealing material 41 Mounting base 42 Double-sided tape C Clip D Door G Door glass M Gap

Claims (5)

An interior door trim is attached to the inner side of the door inner panel, and a belt line inner weather strip attached along the belt line and formed with a seal lip portion that slides on the door glass is attached to the door inner panel or the door trim. A door structure for an automobile, wherein a sound insulating sheet is provided so as to hang from the upper side to the lower side between the door inner panel and the door trim,
A door structure for an automobile, wherein a hollow seal member that presses the sound-insulating sheet toward the door inner panel side during assembly is attached to the door inner panel side of the door trim.   2. The automobile door according to claim 1, wherein the hollow seal member includes an attachment base portion having a substantially U-shaped cross section, and the attachment base portion is attached to a protrusion extending from the door trim toward the door inner panel. Construction.   The protrusion is provided on the door inner panel side inner side of the door trim, and on the door inner panel side outer side of the door trim, a pressing piece for pressing the sound insulating sheet is provided together with the hollow seal member. The door structure for an automobile according to claim 2, wherein the door structure is an automobile.   The automobile door structure according to claim 3, wherein a sealing material is provided at a tip of the pressing piece.   A concave portion that opens toward the inside of the vehicle is formed at a portion of the door inner panel where the hollow seal member presses the sound insulating sheet, and there is a gap between the hollow seal member and the concave portion during the pressing. The door structure for an automobile according to claim 1, wherein the door structure is formed.

Images