JP2023176365A - Attachment structure of insulator to vehicle interior material - Google Patents

Abstract

To stabilize a position of a sound absorption material attached to a door trim.SOLUTION: In an attachment structure of a sound absorption material 40 to a door trim 1, the door trim 1 has: a door trim body 10 forming an inner surface of a passenger compartment; and a trim bracket 20 disposed at the outer side of the passenger compartment of the door trim body 10. The trim bracket 20 has: an inner wall part 22 attached to the door trim body 10; an outer wall part 21 which is formed in a long and thin shape in a vehicle length direction and connected at an upper edge part to the inner wall part 22. An end of a sound absorption material 40 which covers the door trim body 10 is inserted between the outer wall part 21 and the inner wall part 22. A weather strip 50 extending along the outer wall part 21 is attached to the outer side of the passenger compartment of the outer wall part 21. The weather strip 50 has a fin part 51d which protrudes to a hanging wall part 22b so as to cover a lower edge part of the outer wall part 21. The fin part 51d serves as an engagement part to engage with the sound absorption material 40, pushing the sound absorption material 40 against the handing wall part 22b.SELECTED DRAWING: Figure 4

Description

The present invention relates to a structure for attaching an insulator to a vehicle interior material.

BACKGROUND ART Insulators such as sound absorbing materials, cushioning materials, and heat insulating materials are attached to vehicle interior materials such as door trims between them and the vehicle body.

Patent Document 1 below discloses a structure for attaching a sound absorbing material (insulator) to the outside of a vehicle interior of a door trim (vehicle interior material). The door trim with this mounting structure is composed of multiple trim boards (trim components), and after the multiple trim boards are temporarily assembled via welding bosses, welding bosses are attached to the outside of the passenger compartment of the temporarily assembled door trim. Sound absorbing material is placed to cover the head of the person. When the ultrasonic horn is pressed against the part of the sound-absorbing material that overlaps with the head of the welding boss, the head of the welding boss passes through the sound-absorbing material, the sound-absorbing material is welded to the welding boss, and the trim board is fastened at the same time. It has become.

JP2005-67528A

In the sound-absorbing material mounting structure of Patent Document 1, the sound-absorbing material disposed on the door trim may be displaced when the ultrasonic horn is pressed. As a result, the sound-absorbing material could not be set in its original position, or an operator had to reposition the sound-absorbing material.

The present invention has been made to solve at least one of the above problems, and a structure for mounting an insulator to a vehicle interior material according to one aspect of the present invention includes:
The vehicle interior material has a trim body forming the inner surface of the vehicle interior, and a trim bracket disposed on the outside of the vehicle interior of the trim body,
The trim bracket has an inner wall portion attached to the trim main body, and an outer wall portion that is formed into an elongated shape and has one end in the transverse direction connected to the inner wall portion, and has a space between the outer wall portion and the inner wall portion. An insulator is inserted to cover the above trim body,
A weather strip extending along the outer wall is attached to the outside of the vehicle interior of the outer wall, and the weather strip projects toward the inner wall so as to cover the other end of the outer wall in the lateral direction. The insulator is characterized in that it has a fin portion that serves as a locking portion that presses and locks the insulator against the inner wall portion.

According to the above configuration, the weather strip is attached to the outer wall of the trim bracket, and its fins (locking parts) press and lock the insulator against the inner wall, thereby stabilizing the position of the insulator covering the trim body. be able to. Moreover, the manufacturing cost of the mounting structure can be reduced by using the fin portion that covers the other end of the outer wall portion in the lateral direction as a locking portion for pressing the insulator.

Preferably, the locking portion has a shape that extends slenderly toward the inner wall in a cross-sectional shape perpendicular to the extending direction of the weather strip, and can be hooked onto the insulator.
According to the above configuration, the locking portion locks the insulator with a catch, thereby increasing the effect of preventing displacement of the insulator.

Preferably, the locking portion is inclined toward the insertion direction of the insulator as it goes toward the inner wall portion.
According to the above configuration, when the insulator is inserted between the outer wall portion and the inner wall portion in order to be locked to the locking portion, the locking portion serves as a guide for guiding the insulator. Further, when the insulator is inserted, the locking portion restricts movement of the insulator in the direction opposite to the insertion direction. That is, the locking portion has a structure that makes it easy to insert the insulator and difficult to remove it.

According to the present invention, the position of an insulator attached to a vehicle interior material can be stabilized.

1 is a front view of a door trim (vehicle interior material) and a sound-absorbing material (insulator) according to an embodiment of the present invention, seen from the outside of the vehicle interior in a separated state; FIG. It is a front view of the sound absorbing material attached to the door trim, as seen from the outside of the vehicle. FIG. 2 is a front view of a trim bracket constituting the door trim and a weather strip attached to the trim bracket as seen from outside the vehicle interior in a separated state. (A) is an enlarged sectional view taken along line 4A-4A in FIG. 1. (B) is an enlarged sectional view taken along line 4B-4B in FIG. 2.

Hereinafter, a structure for attaching a sound absorbing material (insulator) to a door trim (interior material for a vehicle), which constitutes one embodiment of the present invention, will be described with reference to FIGS. 1 to 4. To facilitate understanding, FIGS. 1 to 3 show the longitudinal direction of the vehicle, and FIG. 4 shows the vehicle interior side and the vehicle exterior side in the vehicle width direction.

As shown in FIG. 1, the door trim 1, which is a vehicle interior material, includes a door trim body 10 (trim body) that is attached to a door panel (not shown) and forms the inner surface of the vehicle interior, and an upper end of the door trim body 10 on the outside of the vehicle interior. It has a trim bracket 20 attached to the section.

The door trim body 10 is made of synthetic resin such as polypropylene (PP) and filled polypropylene (PPF). As shown in FIG. 1, the door trim body 10 is constructed by assembling a plurality of trim components 11, 12, 13, and 14. Adjacent trim structures 11, 12, 13, and 14 are welded to the other structure by inserting a welding boss 15 provided in one structure into a hole formed in the other structure. By this, they are joined.

The door trim body 10 has a plurality of clips 16 on its exterior side surface for fixing to a door panel (not shown). As shown in FIG. 4, the rear upper edge of the door trim body 10 has a shape that curves toward the outside of the vehicle cabin as it advances upward. Further, the door trim body 10 has a rib 17 on its upper portion that projects outward in the vehicle width direction and supports the trim bracket 20. A skin material 30 is attached to the door trim body 10 to cover the surface thereof on the vehicle interior side.

The trim bracket 20 is an injection molded product made of synthetic resin, and may be made of the same material as the door trim body 10. As shown in FIGS. 1 and 2, the trim bracket 20 is formed to be longitudinal in the longitudinal direction of the vehicle, and as shown in FIGS. , and an inner wall portion 22 on the passenger compartment side. The cross-sectional shape of the trim bracket 20 is approximately in the shape of an inverted U, as shown in FIG. An end portion of a sound absorbing material 40 (insulator), which will be described later, is inserted between the outer wall portion 21 and the inner wall portion 22.

As shown in FIGS. 1 and 3, the outer wall portion 21 is formed into a plate shape that continuously extends in the longitudinal direction of the vehicle, with the plate surface facing toward the exterior and exterior of the vehicle interior. The surface of the outer wall portion 21 on the outside of the vehicle interior is used as a mounting seat for a weather strip 50, which will be described later. A plurality of mounting holes 21a for mounting the weather strip 40 are formed in the outer wall portion 21 at intervals in the longitudinal direction. The inner wall portion 22 is connected to the upper edge of the outer wall portion 21 .

As shown in FIGS. 3 and 4, the inner wall portion 22 protrudes from the outer wall portion 21 toward the passenger compartment and is curved downward, and has an upper portion connected to the upper edge portion (one end portion in the transverse direction) of the outer wall portion 21. It has a wall portion 22a, a hanging wall portion 22b hanging down from the vehicle interior side of the upper wall portion 22a, and a connecting wall portion 22c (shown in FIG. 3) hanging down further from the hanging wall portion 22b. The upper wall portion 22a and the hanging wall portion 22b extend continuously in the longitudinal direction of the vehicle, but a plurality of connecting wall portions 22c are formed spaced apart in the longitudinal direction of the vehicle.

As shown in FIG. 3, each connecting wall portion 22c is formed with a connecting hole 22d, and as shown in FIGS. A welding boss 15 that is provided and protrudes toward the outside of the vehicle interior in the vehicle width direction is inserted through and welded to the connecting wall portion 22c. Thereby, the trim bracket 20 is assembled to the door trim body 10.

The weather strip 50 is attached to the outer wall portion 21 of the trim bracket 20, and is used to seal the door trim 1 and the door glass (not shown) arranged outside the vehicle interior to prevent rainwater from entering through the gap, and to prevent rainwater from entering the door glass. This is to prevent vibrations. As shown in FIGS. 1 and 2, the weather strip 50 extends in an elongated manner along the outer wall portion 21. The weather strip 50 has substantially the same cross-sectional shape as shown in FIG. 4, except for both ends in the longitudinal direction. The weather strip 50 is composed of a strip main body 51 and a metal plate 52 inserted into the strip main body 51.

The strip main body 51 is made of rubber or rubber-based resin. The strip main body 51 has an elongated flat plate shape and has a mounting wall 51a facing the outer wall 21, a mounting claw 51b extending obliquely upward toward the passenger compartment from the upper edge of the mounting wall 51a, and a mounting wall 51a. A lip portion 51c is formed vertically apart and extends obliquely upward to the outside of the vehicle interior and comes into elastic contact with the door glass (not shown), and a lip portion 51c extends toward the vehicle interior from the lower edge of the mounting wall portion 51a and is located below the outer wall portion 21. It has a fin portion 51d that covers the edge (the other end in the transverse direction).

The mounting claw portions 51b are formed in the same number as the mounting holes 21a at the same intervals as the mounting holes 21a of the outer wall portion 21. The sheet metal 52 is inserted over almost the entire area of the mounting wall portion 51a.

In order to attach the weather strip 50 to the trim bracket 20, as shown in FIG. It makes me overcome. At this time, the mounting wall portion 51a may be welded or adhered to the outer wall portion 21.

The fin part 51d of the weather strip 50 not only covers the lower edge of the outer wall part 21, but also covers the end of the sound absorbing material 40 inserted between the outer wall part 21 and the inner wall part 22. It is also something that is pressed and locked against 22b. The fin portion 51d (locking portion) protrudes from the lower edge of the mounting wall portion 51a toward the inner wall portion 22, and is slightly inclined upward toward the inner wall portion 22 side. The cross-sectional shape of the fin portion 51d is elongated toward the inner wall portion 22 and tapered.

As shown in FIGS. 1 and 2, a sound absorbing material 40 is attached to the outside of the vehicle interior of the door trim 1 configured as described above. The sound absorbing material 40 reduces the propagation of noise from outside the vehicle interior into the vehicle interior, and is formed into a sheet shape of felt, nonwoven fabric, urethane, etc., and has flexibility. The sound absorbing material 40 is trimmed into a shape that matches the coverage area of the door trim 1, and is arranged to avoid interference with other components of the vehicle. In this embodiment, the sound absorbing material 40 is arranged at the upper rear part of the door trim 1.

As shown in FIGS. 2 and 4(B), the upper end of the sound absorbing material 40 is inserted between the outer wall 21 and the inner wall 22, and is suspended by the fin 51d (locking part) of the weather strip 50. It is pressed and locked against the surface of the wall portion 22b on the outside of the vehicle interior. At this time, the fin portion 51d has a cross-sectional shape that is elongated toward the inner wall portion 22 and tapered, so that the fin portion 51d is hooked so as to bite into the sound absorbing material 40. Furthermore, the fin portion 51d has a shape that slopes upward from the lower end of the mounting wall portion 51a toward the inner wall portion 22, thereby restricting downward movement of the sound absorbing material 40. That is, the shape of the fin portion 51d enhances the effect of preventing displacement of the sound absorbing material 40.

At the upper end of the sound absorbing material 40, immediately below the locking point by the fin portion 51d, as shown in FIG. It is welded to the welding boss 15. At locations other than the upper end of the sound absorbing material 40, the sound absorbing material 40 is welded to the welding boss 15 so as to cover the welding boss 15 used for assembling the trim components 11, 12, 13, and 14.

Next, attachment of the sound absorbing material 40 to the door trim 1 will be explained.
First, as shown in FIG. 1, the trim components 11, 12, 13, and 14 constitute a temporarily assembled door trim body 10, and the trim bracket 20 to which the weather strip 50 has been attached is attached to the door trim body 10. Leave it in the temporarily assembled state. In this state, the sound absorbing material 40 is positioned on the outside of the vehicle interior of the door trim 1, and is locked by the fin portion 51d of the weather strip 50, as shown in FIGS. 2 and 4(B).

At this time, as shown in FIG. 4(A), the upper end portion of the sound absorbing material 40 is inserted between the outer wall portion 21 and the inner wall portion 22 from below. When the sound absorbing material 40 is inserted to a predetermined position, as shown in FIG. 4(B), the sound absorbing material 40 is caught on the fin portion 51d and thereby locked to the fin portion 51d. The fin portion 51d has a shape that slopes upward from the lower end of the mounting wall portion 51a toward the inner wall portion 22, that is, a shape that slopes in the insertion direction of the sound absorbing material 40. Thereby, the fin portion 51d serves as a guide for guiding the insertion of the sound absorbing material 40, making it easier to insert the sound absorbing material 40.

After the sound absorbing material 40 is locked to the fin portion 51d, an ultrasonic horn (not shown) is pressed against the portion of the sound absorbing material 40 that covers the welding boss 15. As a result, the head of the welding boss 15 passes through the sound absorbing material 40, and the sound absorbing material 40 is welded to the welding boss 15. At the same time, the door trim body 10 is formed by assembling the trim components 11, 12, 13, and 14, and the trim bracket 20 is assembled to the door trim body 10.

In the process of attaching the sound absorbing material 40 to the door trim 1, when the ultrasonic horn is pressed against the welding boss 15 via the sound absorbing material 40, the sound absorbing material 40 is stopped by the fin portion 51d of the weather strip 50. Therefore, positional deviation can be prevented.

According to the above embodiment, the position of the sound absorbing material 40 attached to the door trim 1 can be stabilized. Moreover, workability in attaching the sound absorbing material 40 can be improved. Furthermore, by using the fin portion 51d of the weather strip 50 that covers the lower edge of the outer wall portion 21 of the trim bracket 20 as a locking portion for pressing the sound absorbing material 40, compared to the case where a separate locking portion is provided, It is possible to reduce parts costs and mold costs, thereby reducing costs.

Note that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the invention.
The vehicle interior material is not limited to a door trim, but may also be a deck side trim, a back door trim, or the like.
The insulator is not limited to a sound absorbing material, but may be a cushioning material, a heat insulating material, or the like.
In the above embodiment, the sound absorbing material is locked at the fin and welded to the welding boss, but it may be locked only at the fin.
In the above embodiment, the sound absorbing material is welded to the welding boss, but a hole or a slit may be formed in the sound absorbing material so that the welding boss can be inserted therethrough.

INDUSTRIAL APPLICATION This invention is applicable to the attachment structure of the insulator to the interior material for vehicles.

1 Door trim (vehicle interior material)
10 Door trim body (trim body)
11, 12, 13, 14 Trim structure 15 Welding boss 16 Clip 17 Rib 20 Trim bracket 21 Outer wall 21a Mounting hole 22 Inner wall 22a Upper wall 22b Hanging wall 22c Connecting wall 22d Connecting hole 30 Skin material 40 Sound absorbing material (Insulator)
50 weather strip 51 strip main body 52 sheet metal 51a mounting wall portion 51b mounting claw portion 51c lip portion 51d fin portion

Claims (3)

A structure for mounting an insulator to a vehicle interior material,
The vehicle interior material has a trim body forming the inner surface of the vehicle interior, and a trim bracket disposed on the outside of the vehicle interior of the trim body,
The trim bracket has an inner wall portion attached to the trim main body, and an outer wall portion that is formed into an elongated shape and has one end in the transverse direction connected to the inner wall portion, and has a space between the outer wall portion and the inner wall portion. The above insulator is inserted to cover the above trim body,
A weather strip extending along the outer wall is attached to the outside of the vehicle interior of the outer wall, and the weather strip projects toward the inner wall so as to cover the other end of the outer wall in the lateral direction. 1. A structure for mounting an insulator to a vehicle interior material, characterized in that the fin portion is provided as a locking portion that presses and locks the insulator against the inner wall portion. The vehicle according to claim 1, wherein the locking portion has a shape that extends slenderly toward the inner wall portion in a cross-sectional shape perpendicular to the extending direction of the weather strip, and is capable of being hooked onto the insulator. Installation structure of insulator to interior material. 3. The structure for mounting an insulator to a vehicle interior material according to claim 2, wherein the locking portion is inclined in the insertion direction of the insulator as it goes toward the inner wall.

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