JP6703196B2 - Mounting structure of sound insulation material for automobile door trim - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure for mounting a sound insulation material on an automobile door trim arranged on the inner surface side of a vehicle body door panel, and in particular, for improving workability and installation stability of the sound insulation material and obtaining necessary and sufficient sound insulation performance. It is suitable.

Conventionally, in this type of automobile door trim, a sound insulating material is attached to a portion where sound leakage or sound intrusion is likely to occur, so that the sound insulating material prevents sound leakage or sound intrusion through such a portion. A conventional sound insulating material mounting structure for a vehicle door trim is disclosed in, for example, Patent Document 1.

3 is a schematic perspective view of a conventional automobile door trim and its peripheral members, FIG. 4(a) is an enlarged view of the conventional automobile door trim and its peripheral members viewed from the direction of arrow C in FIG. 3, and FIG. 4(b) is It is sectional drawing which cut|disconnected the conventional vehicle door trim and its peripheral member by the DD line in the same figure (a).

As shown in FIGS. 3 and 4A and 4B, a waist garnish portion 2 having a shape curved toward the vehicle body panel P and a waist garnish portion 2 are provided near an upper portion of a conventional automobile door trim 1. A waist flange portion 3 that extends downward from the back surface, and an inner seal 4 that can be slidably contacted to the door window glass DG inside the vehicle body panel P while being attached to the inner seal attachment surface 3A of the waist flange portion 3. , Are provided.

By the way, the door window glass DG slides up and down along the glass run GR located on the front and rear edge sides thereof. The front end 2A of the waist garnish portion 2 is arranged so as to face the frame frame F of the glass run GR, and a gap Q (is provided between the front end 2A of the waist garnish portion 2 and the frame frame F of the glass run GR that face each other. FIG. 2B) exists. As a means for preventing such sound leakage and sound invasion through the gap Q, a sound insulating material 5 is attached to the conventional vehicle door trim 1.

The conventional structure for mounting the sound insulating material 5 on the vehicle door trim 1 (hereinafter referred to as "conventional sound insulating material mounting structure") has a seal of the inner seal 4 near the front end 2A of the waist garnish portion 2 as shown in FIG. 4(b). It has a structure in which the sound insulating material 5 is attached across the base portion 40 and the waist flange portion 3.

However, according to the conventional sound-insulating material mounting structure as described above, the sound-insulating material 5 must be attached across the two parts (specifically, the seal base portion 40 and the waist flange portion 3 of the inner seal 4) as described above. What must be done, and in the pasting work, the waist garnish portion 2 is a hindrance to a portion which is difficult for the operator to see, that is, a portion of the inner seal is wound around the back surface 3B side of the waist flange portion 3 so that the inner seal is stuck. Since it is necessary, the workability of attaching the sound insulation material 5 is poor. In addition, when the sound insulation material 5 is attached to such a hard-to-see portion, the sound insulation material 5 is likely to be poorly attached, and the sound insulation material 5 cannot be stably attached.

Further, according to the conventional sound insulating material mounting structure, there is no part that can serve as a mounting reference for the sound insulating material 5, so that the sound insulating material mounting state is not uniform, such as the sound insulating material 5 mounting position and mounting tension. In some cases, the necessary and sufficient sound insulation performance cannot be obtained because the thickness of the sound insulation material required to obtain the desired sound insulation effect is not ensured due to variations in the thickness of the sound insulation.

JP, 2008-49721, A

The present invention has been made to solve the above-mentioned problems, and an object thereof is to improve the workability and installation stability of a sound insulation material, and to obtain a necessary and sufficient sound insulation performance for an automobile. An object of the present invention is to provide a structure for attaching a sound insulating material to a vehicle door trim.

In order to achieve the above-mentioned object, the present invention is a mounting structure of a sound insulating material to an automobile door trim arranged on the inner surface side of a vehicle body door panel, wherein the vicinity of an upper portion of the automobile door trim is directed toward the vehicle body panel. A curved waist garnish portion, a waist flange portion extending downward from the back surface of the waist garnish portion, and a door inside the vehicle body panel attached to the inner seal mounting surface of the waist flange portion. An inner seal capable of sliding contact with the window glass is provided, and an end portion of the waist flange portion is provided with a step portion lower than the mounting surface of the inner seal in the waist flange portion, and A state in which the sound insulating material is attached on the step portion, and a seal base portion of the inner seal is arranged on the attached sound insulating material, so that a part of the sound insulating material is formed on the step portion and the inner portion. In the state of being sandwiched between the seal base of the seal and the vertical wall surface of the stepped portion is set as the mounting reference surface of the sound insulating material, and the tip surface of the sound insulating material is in contact with the mounting reference surface. It is characterized by becoming.

In the present invention, a sticking pedestal part having a shape bent in an L shape from the step part is provided at the tip of the step part, and a part other than a part of the sound insulating material is provided with respect to the sticking pedestal part. By being attached, the sound insulating material may be in a form of being attached in an L shape as a whole.

According to the present invention, as described above, the end portion of the waist flange portion is provided with the step portion lower than the mounting surface of the inner seal, and the sound insulating material is attached to the step portion. Therefore, in the stage before the inner seal is attached to the inner seal mounting surface of the waist flange, there is no member that obstructs access to the step, and a wide space including the step is covered with the sound insulation material. Since it can be secured as a mounting work space, the workability of mounting the sound insulation material is improved. Further, since the worker can firmly attach the sound insulation material to the step portion while visually confirming the step portion, the sound insulation material is less likely to be improperly attached, and the sound insulation material is attached more stably.

Further, according to the present invention, as described above, by disposing the seal base portion of the inner seal on the sound insulating material attached on the step portion as described above, a part of the sound insulating material is formed on the step portion and the inner seal. Since it is fixed by being sandwiched by the seal base portion, the mounting stability of the sound insulation material is also improved in this respect.

Further, according to the present invention, as described above, the vertical wall surface of the step portion is set as the mounting reference surface of the sound insulating material, and the tip surface of the sound insulating material is in contact with the mounting reference surface. For this reason, by clarifying the mounting reference surface of the sound insulation material, it is possible to make the sound insulation material installation state uniform, such as the sound insulation material installation position and installation tension, and the thickness of the installed sound insulation material is less likely to vary. The sound insulating material is suitable for improving the sound insulating performance in that a stable thickness (thickness necessary for obtaining a desired sound insulating effect) can be secured.

FIG. 1 is a schematic perspective view of an automobile door trim to which the present invention is applied and its peripheral members. 2(a) is an enlarged view of the automobile door trim and its peripheral members viewed from the direction of arrow A in FIG. 1, and FIG. 2(b) is a sectional view of the automobile door trim and its peripheral members taken along the line BB in FIG. 2(a). Sectional view. FIG. 3 is a schematic perspective view of a conventional automobile door trim and its peripheral members. FIG. 4A is an enlarged side view of a conventional automobile door trim and its peripheral members as seen from the direction of arrow C in FIG. 3, and FIG. 4B is a DD line in FIG. 4A showing a conventional automobile door trim. Sectional drawing which cut the peripheral member.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of an automobile door trim and its peripheral members to which the present invention is applied, and FIG. 2A is an enlarged view of the automobile door trim and its peripheral members viewed from the direction of arrow A in FIG. FIG. 6B is a sectional view of the automobile door trim and its peripheral members taken along line BB in FIG.

Referring to FIG. 1, a vehicle door trim 1 is arranged in a state of being attached to an inner surface side of a vehicle body panel P by a known attaching means such as an attaching clip (not shown).

Near the upper part of the vehicle door trim 1, a waist garnish portion 2 having a curved shape toward the vehicle body panel P, a waist flange portion 3 extending downward from the back surface of the waist garnish portion 2, and a waist flange portion. An inner seal 4 which is slidably in contact with the door window glass DG inside the vehicle body panel P in a state of being attached to the inner seal attachment surface 3A of the inner cover 3 of FIG.

As a method of providing the waist garnish portion 2 near the upper portion of the automobile door trim 1, for example, as shown in FIG. 1, the door trim body 10 and the waist garnish portion 2 are integrally molded as one component, or the waist garnish portion 2 and the door trim. A method of connecting the door trim body 10 and the waist garnish portion 2 after molding the body 10 as a separate component and then concatenating the door trim body 10 is conceivable, but any method may be adopted, or another method. Thus, the waist garnish portion 2 may be provided near the upper portion of the automobile door trim 1.

Further, as a specific configuration example of the waist flange portion 3, in the automobile door trim 1 of FIG. 1, the waist flange portion 3 is within the length dimension range from the front end 2A to the rear end 2B of the waist garnish portion 2. Although it has a strip-like elongated shape, it is not limited to such a shape.

Further, as a specific configuration example of the inner seal 4, in the automobile door trim 1 of FIG. 1, the inner seal 4 includes a seal base portion 40 and upper and lower double seal lips 41 and 42 integrally formed with the seal base portion 40. Although the seal lips 41 and 42 are in contact with the door window glass DG surface at a predetermined pressure, the structure is not limited to such a structure.

The door window glass DG slides up and down along the glass run GR located on the front and rear edge sides thereof. The front end 2A of the waist garnish portion 2 is arranged so as to face the frame frame F of the glass run GR.

As described above, there is a gap Q (see FIG. 2(b)) between the front end 2A of the waist garnish portion 2 and the frame frame F of the glass run GR, and sound leakage or sound leakage through the gap Q occurs. As a means for preventing entry, a sound insulation material 5 is attached to the vehicle door trim 1.

In the mounting structure of the sound insulating material 5 to the vehicle door trim 1 (hereinafter referred to as the "sound insulating material mounting structure of the present embodiment"), the end surface of the waist flange portion 3 is closer to the mounting surface 3A of the inner seal 4 in the waist flange portion 3. A step portion 6 having a lower height, and the sound insulating material 5 is attached to the step portion 6, and the seal base 40 of the inner seal 4 is placed on the attached sound insulating material 5. A state in which a part of the sound insulating material 5 is sandwiched between the step portion 6 and the seal base portion 40 of the inner seal 4, and the vertical wall surface 6A of the step portion 6 is set as a mounting reference surface of the sound insulating material 5, and The tip surface 5A of the sound insulating material 5 is in contact with the mounting reference surface (vertical wall surface 6A).

A foam material such as polyurethane can be used as the sound insulation material 5. However, the sound insulation material 5 is not limited to this, and even if a foam material other than polyurethane or a sound insulation material other than the foam material is adopted as the sound insulation material 5. Good.

In addition, in the sound insulating material mounting structure of the present embodiment, a sticking pedestal portion 7 that is bent in an L shape from the step portion 6 is provided at the tip end portion of the step portion 6, and the sound insulating material is attached to the sticking pedestal portion 7. By sticking a portion other than a part of the material (a portion sandwiched by the step portion 6 and the inner seal 4), the sound insulating material 5 as a whole was stuck in an L shape as shown in FIG. 2(b). It is in the form.

As described above, a part of the sound insulating material 5 sandwiched between the step portion 6 and the inner seal 4 is also attached to the step portion 6. A double-sided tape can be used for sticking the sound insulating material 5 to the stepped portion 6 or sticking the sound insulating material 5 to the sticking pedestal portion 7, and the sticking may be performed using an adhesive means other than the double-sided tape. ..

The procedure for attaching the sound insulation material 5 in the sound insulation material installation structure of the present embodiment described above is as in the following procedure 1 and procedure 2.

・Procedure 1
In the procedure 1, before attaching the inner seal 4 to the mounting surface 3A of the inner seal 4 in the waist flange portion 3, a part of the sound insulating material 5 is attached in advance on the stepped portion 6 and other parts than the sound insulating material 5 are attached. The portion is attached to the attachment base 7. At this time, the tip end surface 5A of the sound insulating material 5 is brought into contact with the vertical wall surface (mounting reference surface of the sound insulating material) 6A of the stepped portion 6 so that the sound insulating material is attached (for example, the sound insulating material 5 is attached at the installation position or the installation tension). Can be adjusted.

・Procedure 2
In procedure 2, the inner seal 4 is attached to the mounting surface 3A of the inner seal 4 in the waist flange portion 3 after the sound insulation material 5 has been attached in procedure 1. As a result, part of the sound insulating material 5 is fixed in a state of being sandwiched between the step portion 6 and the seal base portion 40 of the inner seal 4. This completes the attachment of the sound insulation material 5 to the automobile door trim 1.

According to the sound insulating material mounting structure of the present embodiment described above, as described above, the step portion 6 lower than the mounting surface 3A of the inner seal 4 in the waist flange portion 3 is provided at the end portion of the waist flange portion 3, In addition, the sound insulating material 5 is stuck on the stepped portion 6. Therefore, in the stage before the inner seal 4 is attached to the inner seal attachment surface 3A of the waist flange portion 6, there is no member that hinders access to the step portion 6, and a wide space including the step portion 6 is provided. Can be secured as a work space for mounting the sound insulation material 5, so that the work efficiency of mounting the sound insulation material 5 is excellent. Further, since the worker can firmly attach the sound insulating material 5 onto the step portion 6 while visually confirming the step portion 6, the sound insulating material 5 is less likely to be stuck poorly, and the sound insulating material 5 is stably attached. It also has excellent properties.

In addition, according to the sound insulation material mounting structure of the present embodiment, as described above, the seal base portion 40 of the inner seal 4 is disposed on the sound insulation material 5 attached on the stepped portion 6, thereby Since the portion is fixed by being sandwiched between the step portion 6 and the seal base portion 40 of the inner seal 4, the mounting stability of the sound insulating material 5 is also excellent in this respect.

Further, according to the sound insulating material mounting structure of the present embodiment, as described above, the vertical wall surface 6A of the step portion 6 is set as the mounting reference surface of the sound insulating material 5, and the sound insulating material is attached to the mounting reference surface (vertical wall surface 6A). 5A is in contact with the tip surface 5A. Therefore, by clarifying the mounting reference surface of the sound insulating material 5, it is possible to make the sound insulating material mounting state uniform such as the mounting position and the mounting tension of the sound insulating material 5, and the thickness of the mounted sound insulating material 5 varies. The sound insulation material 5 can be improved in sound insulation performance because the sound insulation material 5 can secure a stable thickness (thickness necessary for obtaining a desired sound insulation effect).

The present invention is not limited to the embodiments described above, and many modifications can be made by a person having ordinary skill in the art within the technical idea of the present invention.

1 Automotive Door Trim 10 Door Trim Body 2 Waist Garnish 2A Front End 2B Waist Garnish Rear 3 Waist Garnish Rear 3 Waist Flange 3A Inner Seal Mounting Surface 4 Inner Seal 40 Seal Base 41, 42 Seal Lip 5 Sound Insulation 5A Sound Insulation Tip surface 6 Step 6A Vertical wall surface (reference surface for mounting sound insulation material)
7 Attached pedestal part P Body panel DG Door window glass

Claims (2)

A structure for attaching a sound insulating material to an automobile door trim arranged on the inner surface side of a vehicle body door panel,
In the vicinity of the upper portion of the automobile door trim, a waist garnish portion having a shape curved toward the vehicle body panel, a waist flange portion extending downward from the back surface of the waist garnish portion, and the waist flange portion An inner seal capable of sliding contact with the door window glass inside the vehicle body panel in a state of being attached to the inner seal attachment surface is provided,
A state in which a step portion lower than the mounting surface of the inner seal in the waist flange portion is provided at an end portion of the waist flange portion, and the sound insulating material is attached on the step portion, and the step portion is attached. By disposing the seal base portion of the inner seal on the sound insulation material, a state in which a part of the sound insulation material is sandwiched between the step portion and the seal base portion of the inner seal, and the step portion A vertical wall surface is set as a mounting reference surface of the sound insulating material, and a tip surface of the sound insulating material is in contact with the mounting reference surface. A sound insulating material mounting structure for an automobile door trim. . By providing a sticking pedestal that is bent in an L shape from the step at the tip of the step, and by sticking a part other than a part of the sound insulating material to the sticking pedestal. The attachment structure of the sound insulation material to the automobile door trim according to claim 1, wherein the sound insulation material is attached in an L-shape as a whole.

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