JP5687907B2 - Sound insulation structure for automobile doors - Google Patents

Description

 The present invention relates to a sound insulation structure for automobile doors.

This will be described with reference to FIGS. Usually, a door of an automobile includes a door panel body 30 composed of an outer panel 31 located on the outside of the vehicle and an inner panel 32 located on the interior side, and an interior panel 33 located on the interior side of the inner panel 32 ( For example, see Patent Document 1 and Patent Document 2).
The inner panel 32 is formed with a working hole 32a for assembling a sliding mechanism for the door glass G, and the interior panel 33 is formed with a handle attachment portion 34 for attaching a door opening / closing handle. Yes. Since the handle attachment portion 34 is open, a gap is formed after the door opening / closing handle is attached.
In the door having such a structure, in order to ensure the quietness of the room, the work hole 32a of the inner panel 32 is formed from the indoor side by the sheet material 35 formed by thermally welding the sponge rubber sheet 35a and the synthetic resin film 35b. By sticking and closing, quietness is improved.
In addition, a sound-absorbing sound-absorbing material 36 is pasted on the vehicle exterior side (inner panel side) of the interior panel 33 to further improve quietness. However, this sound-absorbing material is not affixed to the handle attachment portion 34 where there is a gap. The interior panel 33 is fixed to the door panel body 30 after being connected to the door handle fixed to the handle mounting part 34 by a wire extending from a latch or a lock mechanism provided on the door panel body 30, and therefore, the sound absorbing material is attached to the handle mounting part 34. It is because it will become an obstacle of connection work, such as a wire, if it sticks.

JP 2007-223341 A JP 2006-039379 A

The inventors of the present invention conducted a sound insulation experiment using a conventional door in order to further improve the sound insulation of the automobile door. In this experiment, sound was generated from the outside of the vehicle, and the loudness of the sound that penetrated through the door was measured in each of the interior parts of the subdivided door. As a result, in particular, it was possible to specify that sound entered from the outer peripheral portions of the handle attachment portion 34 and the interior panel 33.
Among these, in particular, since the handle attaching portion 34 cannot be covered with the sound-absorbing material in order to perform the door opening / closing handle attaching operation as described above, the gap inevitably remains as it is. Therefore, it is necessary to take some measures.

 The present invention has been devised in view of these problems, and mainly prevents noise from entering through a gap remaining in a handle mounting portion formed on an interior panel constituting an automobile door, thereby improving quietness. It is an object of the present invention to provide a sound insulation structure for an automobile door.

Definition of terms: Sound insulation means sound insulation and sound absorption.
This will be described with reference to FIG. 1 and FIGS. The sound insulation structure 1 for an automobile door according to claim 1 includes an outer panel 11 located on the outside of the vehicle, and an inner panel 12 located on the indoor side of the outer panel 11 and provided with a work hole 13. 10 and an interior panel 20 which is located on the indoor side of the inner panel 12 and has an opening handle attachment portion 21 provided with a door opening / closing handle 22.
And the sheet | seat material 14 which plugs up the said working hole 13 is provided in the indoor side of the said inner panel 12. FIG. In addition, a gap remaining in the handle mounting portion after the door opening / closing handle is mounted in close contact with the handle mounting portion 21 at least at a position corresponding to the handle mounting portion 21 of the interior panel 20 on the indoor side of the seat material 14. A sound-absorbing sound-absorbing block 15a is provided.

The sound insulation structure 1 for an automobile door according to claim 2 includes an outer panel 11 located outside the vehicle and an inner panel 12 located on the indoor side of the outer panel 11 and provided with a work hole 13. 10 and an interior panel 20 which is located on the indoor side of the inner panel 12 and has an opening handle attachment portion 21 provided with a door opening / closing handle 22.
And the sheet | seat material 14 which plugs up the said working hole 13 is provided in the indoor side of the said inner panel 12. FIG. In addition, a gap remaining in the handle mounting portion after the door opening / closing handle is mounted in close contact with the handle mounting portion 21 at a position corresponding to the handle mounting portion 21 of the interior panel 20 on the indoor side of the seat material 14. A sound-absorbing sound-absorbing block 15a is provided. Further, on the indoor side of the sheet material 14, the peripheral end portion of the working hole 13 (the outer peripheral end portion of the working hole 13 and the portion extending over the inner peripheral end portion of the inner panel 12 forming the same), A sound-absorbing sound-absorbing block 15b that elastically contacts the interior panel 20 is provided.

According to the sound-absorbing and sound-absorbing structure 1 for an automobile door according to claim 1, the seat door 14 is in close contact with the handle mounting portion 21 at a position corresponding to at least the opening-shaped handle mounting portion 21 of the interior panel 20. and by providing the shielding sound absorption block 15a close the gap remaining in the handle mounting portion 22 after door handle mounting, since outside of the sound can be prevented from entering the room through the gap, chamber The silence can be improved.

According to the sound insulation structure 1 for automobile doors according to claim 2, the same effect as the invention according to claim 1 is exhibited. Further, since the sound-absorbing sound-absorbing block 15b that elastically contacts the interior panel 20 is provided at a position corresponding to the peripheral end portion of the work hole 13 on the indoor side of the sheet material 14, the peripheral end portion of the work hole 13 and the sheet material 14 Can be adhered. Thereby, it is possible to more effectively prevent sound from entering the room from between the work hole 13 and the sheet material 14.

It is a side view which shows the motor vehicle provided with the door sound-absorption structure. It shows the door sound-absorbing sound-absorbing structure according to the conventional example, and is a cross-sectional view taken along the line XX of FIG. 1 shows an embodiment of a door sound-absorbing structure according to the present invention, and is a cross-sectional view taken along line XX of FIG. 1 (a state before an interior panel is attached). 1 shows an embodiment of a door sound-absorbing structure according to the present invention, and is a cross-sectional view taken along line XX of FIG. 1 (a state after an interior panel is attached). It is a principal part enlarged view of FIG. It is a front view which shows the inner surface side of the door panel main body and interior panel in embodiment of the door sound-insulation structure which concerns on this invention. It is a front view which shows the door panel main body in other embodiment of the door sound-insulation structure which concerns on this invention.

A sound insulation structure 1 for an automobile door according to the present invention is shown in FIGS. 1 and 3 to 6. The door sound-absorbing and sound-insulating structure 1 includes a metal door panel body 10 and a hard synthetic resin interior panel 20. The door panel body 10 includes an outer panel 11 located outside the vehicle, an inner panel located on the indoor side of the outer panel 11, and a work hole 13 for attaching a sliding mechanism for the door glass G at a substantially central portion. A panel 12. The interior panel 20 is provided on the indoor side of the inner panel 12 and includes an opening-shaped handle mounting portion 21 for fixing the door opening / closing handle 22.
A sheet material 14 that closes the working hole 13 is provided on the indoor side surface of the inner panel 12. The sheet material 14 is slightly larger than the work hole 13 and is disposed on the sponge rubber sheet 14a having a size that completely covers the work hole 13 and the indoor side surface (interior panel side) of the sponge rubber sheet 14a. And a synthetic resin film (made of polyethylene) 14b having the same or slightly smaller size are integrated by welding along the outer peripheral end of the sponge rubber sheet 14a. And the outer peripheral edge part of this sheet | seat material 14 is affixed with the adhesive agent (or adhesive material) 16 distribute | arranged to the inner panel 12 at linear form.
And the sound-insulation block 15a closely_contact | adhered to the handle attachment part 21 is stuck to the location corresponding to the handle attachment part 21 of the interior panel 20 on the indoor side surface of the sheet material 14. As a result, only by attaching the interior panel 20 to the door panel body 10, the interior side surface of the sound-absorbing sound-blocking block 15 a is brought into close contact with the handle attachment portion 21, and the remaining gap is closed, so that sound enters the room from the clearance. Can be prevented in advance.
In addition, sound-absorbing sound-absorbing blocks 15 b that are in elastic contact with the vehicle outer side surface of the interior panel 20 are attached to a plurality of locations corresponding to the peripheral end portion of the work hole 13 on the indoor side surface of the sheet material 14. As a result, the sheet material 14 can be brought into close contact with the inner panel 12 by the elasticity of the sound-absorbing sound-insulating block 15b, so that the sound that has passed through the work hole 13 enters the room from between the sheet material 14 and the inner panel 12. Can be more reliably prevented.
In addition, since it is not necessary to attach the sound-absorbing material to the interior panel 20 by providing the sound-absorbing sound-absorbing block, workability can be improved. In particular, by integrating the sheet material 14 and the sound-absorbing sound-blocking block in advance, at the door assembly site, the door material can be blocked by simply attaching the integrated member of the sheet material 14 and the sound-absorbing sound-blocking block to the inner panel 12. Sound absorption can be ensured. Therefore, the door assembly workability can be greatly improved.

 The material of the sound insulation block in the present invention is not limited, and any material having sound insulation and / or sound absorption and elasticity may be used. For example, a rubber sponge or a synthetic resin sponge (heat-like elastic body) Sponges and fiber materials that are porous materials such as plastic elastomer) are suitable.

In the door sound-absorbing structure 1 according to the present invention, a sound-absorbing material 36 can be attached to the vehicle exterior side of the interior panel 20 as in the prior art (see FIG. 3). Thereby, it can contribute to the improvement of the quietness in a room.
In addition, the shape and arrangement | positioning of a sound-insulation block are not limited to the said embodiment. Therefore, for example, as shown in FIG. 7, by providing the sound-absorbing sound-insulating block 15b linearly in the vehicle body front-rear direction of the inner panel 12, sound entering from the drain port formed at the lower end portion of the door panel body 10 is generated. It is possible to effectively prevent entry into the room through the upper part (the gap in the belt line portion). Further, for example, the sound-absorbing sound-absorbing block can be formed in a substantially ring shape along the peripheral end portion of the work hole 13. Further, for example, the outer peripheral end of the sheet material 14 has the same shape as the outer periphery of the interior panel 20 (contact edge with the inner panel), and the entire outer peripheral end of the sheet material 14 or at least the bottom, preferably the front and rear of the vehicle body A sound-absorbing sound-absorbing block (for example, EPT SEALER (trade name), which is a sponge rubber having a specific gravity of 0.05 to 0.4) 17 can be installed in a string shape on the side and bottom (see FIG. 4). This can more reliably prevent sound from entering the room from between the sheet material 14 and the inner panel 12.

1 door sound insulation structure 10 door panel body 11 outer panel 12 inner panel 13 work hole 14 sheet material 14a sponge rubber sheet 14b synthetic resin film 15a, 15b sound insulation block 16 adhesive 17 string-like sound insulation block 20 interior panel 21 handle mounting part 22 Door opening / closing handle 30 Door panel body 31 Outer panel 32 Inner panel 32a Work hole 33 Interior panel 34 Handle mounting part 35 Sheet material 35a Sponge rubber sheet 35b Synthetic resin film 36 Sound insulation material G door glass

Claims (2)

A door panel body (10) having an outer panel (11) located outside the vehicle and an inner panel (12) located on the indoor side of the outer panel and provided with a work hole (13); and a chamber of the inner panel An automobile door sound-absorbing structure comprising an interior panel (20) located on the inner side and provided with an opening / closing handle attachment portion (21) and a door opening / closing handle (22), on the indoor side of the inner panel, A seat material (14) for closing the working hole is provided, and the seat material is in close contact with the handle mounting portion at a position corresponding to the handle mounting portion of the interior panel on the indoor side of the seat material after the door opening / closing handle is mounted. A sound-absorbing and sound-absorbing structure for an automobile door, comprising a sound-absorbing and sound-absorbing block (15a) that closes a gap remaining in a handle attachment portion . A door panel body (10) having an outer panel (11) located outside the vehicle and an inner panel (12) located on the indoor side of the outer panel and provided with a work hole (13); and a chamber of the inner panel An automobile door sound-absorbing structure comprising an interior panel (20) located on the inner side and provided with an opening / closing handle attachment portion (21) and a door opening / closing handle (22), on the indoor side of the inner panel, A seat material (14) for closing the working hole is provided, and the handle after the door opening / closing handle is mounted in close contact with the handle mounting portion at a position corresponding to the handle mounting portion of the interior panel on the interior side of the sheet material. barrier close the gap remaining in the mounting portion absorbing block (15a) is provided, the interior side of the sheet material, the portion corresponding to the peripheral end portion of said working hole, bullet to the interior panel Sound absorbing structure shielding the motor vehicle door, characterized in that a sound absorption block (15b) shielding for.

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