JP2011093488A - Door structure for automobile - Google Patents

Abstract

An end of a sound insulating sheet provided between a door inner panel and a door trim is securely fixed so as not to protrude from the door trim.
SOLUTION: A sound-insulating sheet 20 is provided between a door inner panel 11 and a door trim 12, and a pressing plate provided with a locking member 31 that protrudes toward the door inner panel 11 at a predetermined interval in a plate shape. 30 is disposed at the outer peripheral end of the sound insulating sheet 20, and holes 11a and 20a are provided at positions of the sound insulating sheet 20 and the door inner panel 11 opposite to the locking member 31, and the locking member 31 is provided in these holes. In addition to being inserted, the sound insulating sheet 20 is pressed against the door inner panel 11 at a portion between the retaining members 31 of the pressing plate 30 to fix the sound insulating sheet 20 to the door inner panel 11.
[Selection] Figure 1

Description

  The present invention relates to an automobile door structure in which a sound insulating sheet is attached to the inside of a door inner panel.

As shown in FIGS. 9 and 10, conventionally, as a measure against sound insulation inside the door D, a sound insulation sheet S is provided on the inner side of the door inner panel 11, and a ring-shaped transparent member is provided at the outer peripheral end of the sound insulation sheet S. A door structure is disclosed in which the inner peripheral end of the film F is welded and the outer peripheral end of the transparent film F is bonded to the door inner panel 11 with a sealer (adhesive) R (see, for example, Patent Document 1).
According to this, the adhesion state of the sealer R can be easily visually recognized through the transparent film F. In addition, the sound insulating sheet S closes the working hole formed in the door inner panel 11 and provides an excellent waterproof and soundproofing effect.

However, as shown in FIG. 10, in the method of fixing the sound insulating sheet S to the door inner panel 11 via the sealer R, it is necessary to first attach the sound insulating sheet S after applying the sealer R to the door inner panel 11. Therefore, there was a problem that man-hours were required.
In addition, since it is necessary to weld the inner peripheral end portion of the ring-shaped transparent film F to the outer peripheral end portion of the sound insulating sheet S, the cost for the transparent film F is increased.

On the other hand, as shown in FIGS. 11 and 12, the present applicant provides a sound insulating sheet 20 between the door inner panel 11 and the door trim 12 so as to hang down from the upper side to the lower side, and the sound insulating sheet 20. An automobile door structure is provided in which the upper end of the door is fixed to an inner weather strip 15 attached to the door trim 12 (Patent Document 2).
The inner weather strip 15 supports the upper and lower seal lip portions 17 and 18 that are in sliding contact with the mounting base 16 and the door glass G that is moved up and down from the inside of the vehicle, and supports the seal lip portions 17 and 18 and the lower side from the mounting base 16. A plurality of lip portions 16a and positioning protrusions 16b are formed on the upper surface of the mounting base portion 16, and a substantially U-shaped recess portion formed on the upper portion of the door trim 12. 13 and the positioning protrusion 16b is positioned in contact with the step portion 13a. The door trim 12 is fixed to the door inner panel 11 with a clip C.
Further, in place of the mode shown in FIG. 12, as shown in FIG. 13, the mounting base portion 26 of the inner weather strip 25 having the seal lip portions 27 and 28 on the upper and lower sides of the door trim 22 whose tip is bent is provided with a nail or the like. It may be attached via the metal fitting 29.
According to this, since 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 inner side of the door inner panel 11. The sound insulation is improved as compared with the case where the sound insulation is provided, 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.

JP 2005-82064 A JP 2003-252054 A

However, when fixing the end portion of the sound insulating sheet 20 suspended in a goodwill shape, both side portions or the lower portion of the sound insulating sheet 20 may protrude from the door trims 12 and 22.
When the sound insulating sheet 20 protrudes from the door trims 12 and 22, the appearance is deteriorated and the sound insulating property is also lowered.

  Therefore, the object of the present invention is to securely fix the end of the sound insulating sheet provided between the door inner panel and the door trim without using a sealer so as not to protrude from the door trim. It is to be.

In order to achieve the above object, an automobile door structure according to claim 1 of the present invention has an interior door trim (12) attached to the inner side of the door inner panel (11), and the door inner panel (11). A door structure for an automobile provided with a sound insulating sheet (20) between the door trim (12) and the door trim (12),
A plate-shaped pressing plate (30) provided with a locking member (31) protruding toward the door inner panel (11) at predetermined intervals is arranged on the outer peripheral end of the sound insulating sheet (20), and Holes (11a, 20a) or cuts are provided at the positions of the sound insulating sheet (20) and the door inner panel (11) opposite to the locking member (31),
The locking member (31) is inserted into the hole (11a, 20a) or the notch, and the sound insulating sheet (20) is connected to the door at a position between the locking member (31) in the pressing plate (30). The sound insulating sheet (20) is fixed to the door inner panel (11) by pressing against the inner panel (11).

  Moreover, the invention which concerns on Claim 2 WHEREIN: The outer peripheral edge of the said sound insulation sheet | seat (20) by which the said press board (30) is arranged is the both ends of the said sound insulation sheet | seat (20), a lower end, or an upper end (namely, both ends and A lower end or both ends and an upper end).

  The invention according to claim 3 is characterized in that the pressing plate (30) and the locking member (31) are integrally formed.

  According to a fourth aspect of the present invention, the pressing plate (30) and the locking member (31) are integrally formed by extrusion, and a portion between the locking members (31) is notched. It is what was shape | molded by doing.

  The invention according to claim 5 is characterized in that a plurality of slits (35) are formed in the pressing plate (30).

  The invention according to claim 6 is characterized in that an outer shape of the pressing plate (30) is substantially U-shaped.

  Note that symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and modes for carrying out the invention described later.

As described above, according to the automobile door structure of the present invention, the outer peripheral ends of the sound insulating sheet provided between the door inner panel and the door trim, for example, both sides and the lower end are only the pressing plates provided with the locking members. Therefore, it is not necessary to attach a sound insulating sheet after applying the sealer to the door inner panel as in the prior art, and the workability is good. In addition to the sealer, it is not necessary to provide a ring-shaped transparent film at the outer peripheral end of the sound insulating sheet, so that the cost can be reduced accordingly.
Furthermore, the outer peripheral edge of the sound insulating sheet is not only intermittently fixed by a locking member provided at every predetermined interval, but also on the door inner panel by a plate surface of a pressing plate located between adjacent locking members. Since it is pressed, it is securely and stably fixed without protruding from the door trim.

  The present applicant has provided a technique for intermittently fixing the outer peripheral end of a sound insulating sheet provided in a goodwill shape with pins or clip members (Japanese Patent Laid-Open No. 2003-291644). In the present invention, since the locking member is provided on the pressing plate and fixed continuously, the parts can be easily managed and firmly fixed. Further, in the invention described in Japanese Patent Application Laid-Open No. 2003-291644, the sound insulating sheet is fixed not only to the door inner panel but also to the door trim through a pin or a clip member. Since it is fixed only to the door inner panel side, there is no need to perform special processing such as drilling on the door trim side, and installation is easy.

Further, according to the present invention, since the outer shape of the pressing plate can be made substantially U-shaped, or the pressing plate and the locking member can be integrally formed by, for example, extrusion molding, it can be made into one component. Is even easier.
Moreover, it can be easily bent by forming a plurality of slits in the pressing plate.

It is an appearance perspective view showing the door structure for cars concerning the embodiment of the present invention. It is a disassembled perspective view which shows the door structure for motor vehicles which concerns on embodiment of this invention. It is an expansion perspective view which shows the principal part of the pressing plate shown in FIG. It is a BB line expanded sectional view shown in FIG. It is a perspective view which shows the manufacturing process of the pressing plate shown in FIG. It is a perspective view which shows another manufacturing process of the holding plate shown in FIG. It is a perspective view which shows another manufacturing process of the pressing plate shown in FIG. It is an expansion perspective view which shows the principal part of another pressing plate shown in FIG. It is an external appearance side view which shows the door structure for motor vehicles which concerns on a prior art example. FIG. 10 is an enlarged sectional view taken along line ZZ shown in FIG. 9. It is an external appearance perspective view which shows another door structure for motor vehicles based on a prior art example. It is an AA line expanded sectional view shown in Drawing 1 and Drawing 11. It is an AA line expanded sectional view which shows another aspect shown in FIG.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view showing an automobile door structure according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof.
The door structure for an automobile constitutes a door D, and an interior door trim 12 is attached from the upper side of the door inner panel 11 which is the inner side of the belt line portion of the automobile to the inner side of the vehicle. In addition, the sound insulating sheet 20 is provided so as to hang from the upper side to the lower side. Thereby, at least the vicinity of the center of the door inner panel 11 has a structure in which the sound insulating sheet 20 is provided so as to be covered with the sound insulating sheet 20.

  The upper end of the sound-insulating sheet 20 is attached to the door inner panel 11 or the door trim 12 as shown in FIG. Furthermore, you may make it fix the upper end of the sound-insulating sheet | seat 20 to the inner weather strip 15 attached to the door trim 12 (it may be the door inner panel 11 side). As a result, the two spaces X and Y are generated between the door inner panel 11 and the door trim 12 via the sound insulating sheet 20, so that the sound insulating property is improved and the sound is prevented from leaking from the upper part by covering the upper end. The

Further, the left and right ends and the outer peripheral ends of the lower end of the sound insulating sheet 20 are fixed to the door inner panel 11 by a pressing plate 30 provided with a locking member 31 as shown in FIGS. 1 and 2.
The pressing plate 30 is a plate shape that extends continuously in a substantially U shape, and is provided with a locking member 31 that protrudes toward the door inner panel 11 at predetermined intervals. The pressing plate 30 and the locking member 31 are integrally formed elastic bodies, and the tip of the locking member 31 has a ring shape that can be easily bent.

The holding plate 30 is disposed at the outer peripheral end of the sound insulating sheet 20, and holes 11 a and 20 a are provided at positions of the sound insulating sheet 20 and the door inner panel 11 facing the locking member 31, respectively.
And as shown in FIG. 4, the ring-shaped part 31a of the latching member 31 provided in the pressing board 30 penetrates the hole 20a provided in the outer peripheral end of the sound-insulating sheet | seat 20, and also the door inner panel 11 The sound insulating sheet 20 is fixed to the door inner panel 11 by being inserted into the hole 11a provided at the outer peripheral end of the door, and at the same time, the portion between the adjacent locking members 31 in the pressing plate 30 becomes the sound insulating sheet 20. In contact therewith, the sound insulating sheet 20 is pressed against the door inner panel 11 side.
Here, the length of the base portion 31b of the locking member 31 is substantially the same as the width obtained by adding the thickness of the door inner panel 11 to the thickness of the sound insulating sheet 20, but may be equal to or less than the width. . The length of the base portion 31b is appropriately set depending on the material of the sound insulating sheet 20, and in the case of a material having high elasticity, it is only necessary to fix the base portion 31b so as not to be displaced when pressed. The diameters of the holes 11a and 20a provided in the sound insulating sheet 20 and the door inner panel 11 are smaller than the maximum lateral width H of the ring-shaped portion 31a of the locking member 31, and the ring-shaped portion 31a is elastically deformed. The holes 11a and 20a are inserted into the holes 11a and 20a.

As shown in FIG. 5, the presser plate 30 and the locking member 31 are formed by notching a portion between the adjacent locking members 31 with respect to the one integrally extruded.
In addition, as shown in FIG. 6, it can also be integrated later by inserting and attaching the separate locking member 31 with respect to the pressing plate 30, or as shown in FIG. The molded products can be connected and integrated later. According to this, the form of the pressing plate 30 can be freely changed.
Further, since the presser plate 30 is formed in an outer shape (appearance shape) substantially U-shape, the extruded shape may be curved and held in shape, or previously molded in a substantially U-shape. Alternatively, a separate locking member 31 may be attached. Further, as shown in FIG. 8, a plurality of slits 35 may be formed in the pressing plate 30 so that the extruded product can be easily bent. Also by this, the form of the pressing plate 30 can be freely changed. Furthermore, the extrusion molding part and the molding part may be combined, for example, only the corner part may be molded.

As the material of the pressing plate 30 and the locking member 31, a material that is elastically deformed, such as a resin such as polypropylene or a rubber material made of EPDM, is preferable.
The door trim 12 is fixed to the door inner panel 11 by a clip C.
In addition, a slit may be placed in the sound insulating sheet 20 for assembling the door handle, power window harness, lock and door panel during assembly so as to facilitate removal.

As described above, when the automobile door structure to which the sound insulating sheet 20 is attached is compared with the one provided with the felt, urethane, pad material, and sound insulating cover shown in the conventional example, the frequency band of 1000 to 4000 Hz is about 2 dB. Experimental results show that it is effective.
The material of the sound insulating sheet 20 is not particularly limited, but EPDM sponge rubber is preferable. An example of a commercially available product is “Synthrate (trade name)” manufactured by Sumitomo 3M. In addition, as long as it is a sheet, it may be made of rubber or nylon.

According to the door structure for an automobile configured as described above, the locking members 31 are provided on both sides and the lower end of the sound insulating sheet 20 provided between the door inner panel 11 and the door trim 12 so as to be suspended. Since it is fixed to the door inner panel 11 only by the holding plate 30, it is not necessary to attach the sound insulating sheet 20 after applying the sealer to the door inner panel 11 as in the prior art, and the workability is good. In addition to the sealer, it is not necessary to provide a ring-shaped transparent film at the outer peripheral end portion of the sound insulating sheet 20, so that the cost can be reduced.
Further, the outer peripheral end of the sound insulating sheet 20 is not only intermittently fixed by the locking members 31 provided at predetermined intervals, but also by the plate surface of the pressing plate 30 positioned between the adjacent locking members 31. Since it is pressed by the door inner panel 11, it is securely and stably fixed without protruding from the door trim 12.

In the present embodiment, with respect to the shape of the locking member 31, a ring-shaped portion 31 a is provided at the tip, and the ring-shaped portion 31 a is inserted into holes 20 a and 11 a respectively provided in the sound insulating sheet 20 and the door inner panel 11. However, instead of a circular hole, an incision like a long hole can be made. Further, the shape of the locking member 31 is not particularly limited, and the sound insulating sheet 20 and the door inner panel 11 are sandwiched between the pressing plate 30 and the locking member 31, and the door inner panel is held by the pressing plate 30. What is necessary is just a type which presses the sound-insulating sheet 20 to 11 side.
Moreover, in this embodiment, although the pressing plate 30 was arrange | positioned in the position which opposes the outer peripheral edge of the right-and-left both ends and lower end of the sound-insulating sheet 20, it can also be arrange | positioned in either outer peripheral end among right-and-left both ends and a lower end. . Furthermore, in this embodiment, although the upper end of the sound-insulating sheet | seat 20 was fixed to the inner weather strip 15, it is not limited to this. Therefore, the upper end may also be fixed using the pressing plate 30 and the locking member 31 like the left and right ends and the lower end of the sound insulating sheet 20. In this case, the presser plate 30 and the locking member 31 are installed on the entire outer periphery of the sound insulating sheet 20, only on the upper and lower ends, or only on the upper and left and right ends. The pressing plate 30 does not need to be a single continuous plate, and may be installed on the door inner panel 11 partially (for example, at a corner portion) with a plurality of divided parts that have been shaped into a suitable shape in advance. .

11 Door inner panel 11a Hole 12 Door trim 13a Step 15 Inner weather strip 16 Mounting base 16a Lip 16b Positioning protrusions 17, 18 Seal lip 19 Support 20 Sound insulation sheet 20a Hole 22 Door trim 25 Inner weather strip 26 Mounting base 27 , 28 Seal lip 29 Metal fitting 30 Holding plate 31 Locking member 31a Ring-shaped part 31b Base 35 Slit C Clip D Door F Transparent film G Door glass R Sealer S Sound insulation sheet

Claims (6)

An interior door trim is mounted on the inner side of the door inner panel, and an automotive door structure is provided with a sound insulating sheet between the door inner panel and the door trim.
The sound-insulating sheet is disposed in the outer peripheral end of the sound-insulating sheet and has a pressing plate provided with a locking member that protrudes toward the door inner panel at predetermined intervals and is opposed to the locking member. And providing a hole or notch at the position of the door inner panel,
The locking member is inserted into the hole or notch, and the sound insulating sheet is pressed against the door inner panel at a portion between the locking members in the pressing plate, and the sound insulating sheet is attached to the door inner panel. A door structure for an automobile characterized by being fixed.   The door structure for an automobile according to claim 1, wherein outer peripheral ends of the sound insulating sheet on which the pressing plate is disposed are both ends, a lower end, and an upper end of the sound insulating sheet.   The door structure for an automobile according to claim 1 or 2, wherein the pressing plate and the locking member are integrally formed.   The said pressing plate and the said locking member are what was shape | molded by notching the site | part between the said locking members with respect to what was integrally extruded. Automobile door structure.   The automobile door structure according to any one of claims 1 to 4, wherein the pressing plate is formed with a plurality of slits.   The automobile door structure according to any one of claims 1 to 5, wherein the pressing plate has a substantially U-shaped outer shape.

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