JP2023176364A - 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 50 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 attached to the outer side of the passenger compartment of the door trim body 10. The trim bracket 20 has: an outer wall part 21 for attaching a weather strip S; and an inner wall part 22 which continues into an end of the outer wall part 21. The inner wall part 22 has an engagement part 40 which engages with the sound absorption material 50, pushing the sound absorption material 50 against the door trim body 10.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 attached to the outside of the vehicle interior of the trim body,
The trim bracket has an outer wall portion for mounting a functional component, and an inner wall portion continuous to an end of the outer wall portion,
The inner wall portion is characterized by having a locking portion that presses and locks the insulator against the trim body.

According to the above configuration, the locking portion of the inner wall portion of the trim bracket presses and locks the insulator against the trim body, thereby making it possible to stabilize the position of the insulator.

Preferably, the locking portion includes an arm portion facing the trim body, and a hook portion that protrudes from the arm portion toward the trim body side and is hooked on the insulator.
According to the above configuration, the effect of preventing displacement of the insulator by the hook portion can be enhanced.

Preferably, the hook portion is inclined toward the insertion direction of the insulator as it goes toward the trim body.
According to the above configuration, when the insulator is inserted between the locking part and the trim body to be locked in the locking part, the hook part serves as a guide and guides the insulator, and when the insulator is inserted, The hook portion restricts movement in the direction opposite to the insertion direction. That is, the hook part 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.

FIG. 2 is a front view of a door trim and a sound absorbing material according to an embodiment of the present invention, seen from the outside of the vehicle interior in a separated state. It is a front view of the sound absorbing material attached to the door trim, as seen from the outside of the vehicle. FIG. 3 is a front view of the trim bracket that constitutes the door trim, viewed from outside the vehicle interior. (A) is a sectional view taken along line 4A-4A in FIG. 1. (B) is a 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. The trim bracket 20 is attached to the weather strip S (functional component).

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.

As shown in FIGS. 1 and 2, 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. 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. The trim bracket 20 is formed to be longitudinal in the longitudinal direction of the vehicle, and as shown in FIGS. It has an integral inner wall portion 22 that protrudes toward the vehicle interior and curves downward, and its cross-sectional shape is approximately in the shape of an inverted U, as shown in FIG.

As shown in FIGS. 1 and 2, the outer wall portion 21 extends continuously in the longitudinal direction of the vehicle, and a weather strip S is attached to the outer wall portion 21, as shown in FIG. 4. A mounting hole 21a is formed in the outer wall portion 21, as shown in FIG. 3, and a mounting claw Sa of the weather strip S shown in FIG. 4 is inserted into this mounting hole 21a.

As shown in FIGS. 3 and 4, the inner wall portion 22 includes an upper wall portion 22a continuous to the outer wall portion 21, a hanging wall portion 22b hanging down from the cabin side of the upper wall portion 22a, and a hanging wall portion 22b hanging from the hanging wall portion 22b. Furthermore, it has a connecting wall portion 22c (shown in FIG. 3) that hangs down. 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.

A connecting hole 22d is formed in each connecting wall portion 22c, and as shown in FIGS. A welding boss 15 protruding toward the outdoor side 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 inner wall portion 22 has a locking portion 40 at the rear in the vehicle length direction that further hangs down from the hanging wall portion 22b. The locking part 40 presses and locks the end of the sound absorbing material 50, which is an insulator, against the door trim body 10, and includes a plate-shaped arm part 41 facing the door trim body 10, and a lower end of this arm part 41. It has a plate-shaped hook portion 42 that protrudes from the door trim body 10 toward the door trim body 10 side. The hook portion 42 is inclined upward as it goes toward the door trim body 10 side.

Although the hook portion 42 has an undercut shape in the door trim 1, the trim body 10 and the trim bracket 20 that constitute the door trim 1 are formed as separate bodies. Thereby, when injection molding the trim bracket 20 having the hook portion 42, a slide mold is not required, so moldability is improved.

As shown in FIGS. 1 and 2, a sound absorbing material 50 is attached to the outside of the vehicle interior of the door trim 1 configured as described above. The sound absorbing material 50 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 50 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 50 is arranged at the upper rear part of the door trim 1.

As shown in FIGS. 2 and 4(B), the upper end portion of the sound absorbing material 50 is pressed and locked against the surface of the door trim body 10 on the outside of the vehicle cabin by the locking portion 40 of the trim bracket 20. At this time, the hook part 42 of the locking part 40 is hooked so as to bite into the sound absorbing material 50. The hook portion 42 has a shape that slopes upward from the arm portion 41 toward the door trim body 10, thereby restricting downward movement of the sound absorbing material 50. The hook portion 42 enhances the effect of preventing the sound absorbing material 50 from shifting.

At the upper end of the sound absorbing material 50 other than the locking portion 40 , the sound absorbing material 50 covers the welding boss 15 used for assembling the door trim body 10 and the trim bracket 20 . is welded to. At locations other than the upper end of the sound absorbing material 50, the sound absorbing material 50 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 50 to the door trim 1 will be explained.
First, the trim components 11, 12, 13, and 14 constitute a temporarily assembled door trim body 10, and a trim bracket 20 is temporarily assembled to the door trim body 10. In this state, the sound absorbing material 50 is positioned on the outside of the vehicle interior of the door trim 1 and is locked by the locking part 40.

At this time, as shown in FIG. 4(A), the upper edge portion of the sound absorbing material 50 is inserted from below between the hook portion 42 of the locking portion 40 and the door trim body 10. When the sound absorbing material 50 is inserted to a predetermined position, as shown in FIG. 4(B), the sound absorbing material 50 is caught by the hook portion 42 and thereby locked by the locking portion 40 . Since the hook portion 42 has a shape that slopes upward from the arm portion 41 toward the door trim body 10 side, that is, a shape that slopes in the insertion direction, it serves as a guide for insertion of the sound absorbing material 50. 50 is easy to insert.

After the sound absorbing material 50 is locked in the locking portion 40, an ultrasonic horn (not shown) is pressed against a portion of the sound absorbing material 50 that covers the welding boss 15. As a result, the head of the welding boss 15 passes through the sound absorbing material 50, and the sound absorbing material 50 is welded to the welding boss. At the same time, the trim structure is assembled and the trim bracket 20 is assembled to the door trim body 10.

In the process of attaching the sound absorbing material 50 to the door trim 1, when the ultrasonic horn is pressed against the welding boss 15 through the sound absorbing material 50, the sound absorbing material 50 is locked to the locking portion 40 of the trim bracket 20. This prevents misalignment.

According to the above embodiment, the position of the sound absorbing material 50 attached to the door trim 1 can be stabilized. Moreover, the workability in attaching the sound absorbing material 50 can be improved.

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 by the locking part and welded to the welding boss, but it may be locked only by the locking part.
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.
The functional component attached to the trim bracket is not limited to a weather strip, but may also be a sunshade device, a door panel, or the like.

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 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 Locking part 41 Arm portion 42 Hook portion 50 Sound absorbing material (insulator)
S Weather strip Sa Mounting claw

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 attached to the outside of the vehicle interior of the trim body,
The trim bracket has an outer wall portion for mounting a functional component, and an inner wall portion continuous to an end of the outer wall portion, and the inner wall portion presses and locks the insulator against the trim body. 1. A structure for mounting an insulator to a vehicle interior material, characterized by having a portion. The locking portion has an arm portion facing the trim body, and a hook portion that protrudes from the arm portion toward the trim body side and is hooked on the insulator. Installation structure for insulators on vehicle interior materials. 3. The structure for mounting an insulator to a vehicle interior material according to claim 2, wherein the hook portion is inclined in the insertion direction of the insulator as it goes toward the trim body.

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