JP7487624B2 - Mounting structure for vehicle interior sheet material - Google Patents

Description

The present invention relates to a mounting structure for vehicle interior sheet material.

Conventionally, interior surfaces (ceiling, walls, floors, etc.) of vehicles are fitted with interior sheet materials that have soundproofing properties to prevent sounds such as rain from hitting the vehicle from being transmitted from outside to inside the vehicle, and interior sheet materials that have heat insulation properties to prevent condensation and improve heating and cooling performance.

The following Patent Document 1 discloses an attachment structure for a roof silencer, which is this type of interior sheet material. In this attachment structure, the roof silencer is adhered to the underside of the loop panel by adhesive applied to the upper surface of the sheet, and is adhered to the upper surface of the molded ceiling material by adhesive applied to the underside of the sheet. In this way, the roof silencer is attached between the roof panel and the ceiling molded body of the vehicle.

Japanese Patent Application Laid-Open No. 9-164888

When adopting the above mounting structure, it is difficult to control the amount of adhesive applied to the roof silencer, resulting in excess adhesive, which increases material costs and requires the use of large, expensive application equipment. Instead of gluing the roof silencer, it is possible to attach it to the ceiling surface with double-sided tape, but this also poses the same problems as the need for a special attachment jig.

The present invention was made in consideration of these problems, and aims to provide an attachment structure for vehicle interior sheet material that is effective for attaching interior sheet material to a vehicle easily and at low cost.

One aspect of the present invention is
A mounting structure for a vehicle interior sheet material, which mounts an interior sheet material between a roof panel and a ceiling molding of a vehicle, comprising:
A hook portion provided on the interior sheet material;
a hooked portion provided on the vehicle for engaging the hook portion by utilizing the elasticity of the interior sheet material;
Equipped with
When a vehicle width direction of the vehicle is defined as a longitudinal direction of the interior sheet material, the hooking portion is provided on at least one of both end portions of the interior sheet material in the longitudinal direction and has a first opening into which the hooked portion is inserted,
a second opening provided at a position different from the first opening in order to relieve a tensile load in the longitudinal direction of the vehicle interior sheet material;
It is in.

According to the above-mentioned mounting structure for vehicle interior sheet material, the hooking portion hooks onto the hooked portion when the interior sheet material is in a stretched state in which it is pulled in a predetermined direction, and is engaged with the hooked portion by utilizing the force of the interior sheet material attempting to contract. This allows the interior sheet material to be mounted between the roof panel and the ceiling molding of the vehicle.

In this type of hooking attachment structure, there is no need for devices or jigs for adhering or attaching the interior sheet material to the vehicle, or material costs for adhesives or double-sided tape, and it is sufficient to hook the hooking portion of the interior sheet material onto the hooked portion on the vehicle side. This also reduces the workload required to attach the interior sheet material to the vehicle.

As described above, the above aspect provides an attachment structure for vehicle interior sheet material that is effective for attaching interior sheet material to a vehicle easily and at low cost.

FIG. 1 is a plan view of a mounting structure for a vehicle interior sheet material according to a first embodiment; FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2 . 3A and 3B are plan views each showing a schematic diagram of an initial state and a stretched state of the interior sheet material according to the first embodiment. 5 is a cross-sectional view corresponding to FIG. 3, illustrating a mounting structure for a vehicle interior sheet material according to a second embodiment. FIG. FIG. 11 is a plan view showing a modified example of the interior sheet material. FIG. 11 is a plan view showing a modified example of the hooked portion.

A preferred embodiment of the above aspect will be described.

In the above-mentioned mounting structure for a vehicle interior sheet material, when a vehicle width direction of the vehicle is defined as a longitudinal direction of the interior sheet material, the hooking portion is provided on at least one of both end portions of the interior sheet material in the longitudinal direction, and has a first opening into which the hooked portion is inserted,
The interior sheet material preferably has a second opening provided at a position different from the first opening for relieving the tensile load in the longitudinal direction.

According to this mounting structure, when the hooking portion of the interior sheet material is inserted into and hooked onto the first opening provided on the hooked portion on the vehicle side, the second opening, which is separate from the first opening, expands in the longitudinal direction, thereby mitigating the longitudinal tensile load acting on the interior sheet material. Therefore, compared to a case in which the interior sheet material does not have a second opening, the tensile load acting on the first opening is weakened, thereby reducing the longitudinal opening width, and the hooking portion of the interior sheet material is less likely to come off the hooked portion on the vehicle side. As a result, the reliability of the mounting structure using the hooking of the interior sheet material can be improved.

In the above-mentioned mounting structure for vehicle interior sheet material, it is preferable that both the first opening and the second opening of the interior sheet material are slits extending in a short direction perpendicular to the longitudinal direction.

With this mounting structure, both the first and second openings are slits that extend in the short direction, which reduces the manufacturing costs of interior sheet material with hooks.

In the above-mentioned mounting structure for vehicle interior sheet material, it is preferable that the hooked portion is provided on a roof duct that extends along the vehicle length on the roof of the vehicle.

This mounting structure uses a portion of the roof duct to form the hooked portion, which prevents the number of parts from increasing to accommodate the hooked portion of the interior sheet material.

In the above-mentioned mounting structure for a vehicle interior sheet material, the roof duct has a duct main body portion provided with an air conditioning air flow path through which air conditioning air flows,
It is preferable that the hooked portion extends from the duct body toward the inside of the vehicle so as to be bent at an obtuse angle.

With this mounting structure, the angle of the bend in the hooked portion is made obtuse, making it possible to mold the roof duct with the hooked portion as a single unit. This reduces the cost of manufacturing the roof duct with the hooked portion.

(Embodiment 1)
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mounting structure for a vehicle interior sheet material (hereinafter, also simply referred to as a "mounting structure") according to a first embodiment will be described with reference to the drawings.

In the drawings referred to in the description of this specification, unless otherwise specified, the arrow FR indicates the front of the vehicle, the arrow RH indicates the right side of the vehicle, and the arrow UP indicates the top of the vehicle. The longitudinal direction of the interior sheet material is indicated by the arrow X, the transverse direction is indicated by the arrow Y, and the thickness direction is indicated by the arrow Z.

As shown in FIG. 1, the interior sheet material 10 is attached between the roof panel 2 and the ceiling molding 3 of the vehicle 1. This interior sheet material 10 is installed so that its longitudinal direction X, which is its width direction, coincides with the vehicle width direction of the vehicle 1, its short side direction Y, which is its fore-aft direction, coincides with the vehicle length direction of the vehicle 1, and its thickness direction Z coincides with the vehicle height direction of the vehicle 1.

The interior sheet material 10 is a sheet-like member that combines a sound-proofing function that prevents sounds such as rain from being transmitted from outside the vehicle to the interior of the vehicle, and a heat-insulating function that prevents condensation and improves heating and cooling performance. In this embodiment, the interior sheet material 10 is exemplified by a soft material such as quilting material or sponge that has been compressed and formed into a sheet (a so-called "roof silencer" interior material). The interior sheet material 10 made of such a soft material has elasticity.

Although three interior sheet materials 10 are shown in FIG. 1, the number of interior sheet materials 10 is not particularly limited, and one or more interior sheet materials 10 can be provided as needed.

As shown in Figures 2 and 3, the mounting structure 101 of the first embodiment includes a hook portion 11 provided on the interior sheet material 10 and a hooked portion 22 provided on the roof duct 20.

As shown in FIG. 2, the hooking portion 11 is provided at both ends 11a, 11b of the interior sheet material 10 in the longitudinal direction X. The hooking portion 11 has a first slit 13 as a first opening into which the hooked portion 22 is inserted.

The roof duct 20 is provided along the vehicle length direction on the left and right roof portions 4 of the vehicle 1. The roof duct 20 has a duct main body portion 21 extending in the vehicle length direction, and a hook portion 22 extending from the duct main body portion 21. The material and structure of the roof duct 20 are not particularly limited, but when considering formability and weight reduction, it is preferable that the roof duct 20 be an integrally molded product made of a resin material.

The duct body 21 is a cylindrical section having an air conditioning air flow path 21a inside the cylinder, and extends along the vehicle length direction of the vehicle 1. This duct body 21 is for guiding the air conditioning air generated by the air conditioning unit (not shown) to an outlet opening (not shown) that opens into the vehicle cabin. The left and right duct bodies 21 are positioned to be symmetrical with respect to the center line L (see Figure 2) in the vehicle width direction of the vehicle 1.

The hooking portion 22 is provided on the vehicle 1 to hook and engage the hooking portion 11 by utilizing the elasticity of the interior sheet material 10. The hooking portion 22 is a plate portion that extends inward from the outer surface of the duct main body 21 with the vehicle length direction of the vehicle 1 being the plate width direction. In this embodiment, three hooking portions 22 are provided on each of the left and right duct main bodies 21, spaced apart in the vehicle length direction. The number of hooking portions 22 can be changed as needed.

As shown in FIG. 3, when the roof duct 20 is viewed in the width direction, the hook portion 22 extends horizontally from the duct body 21 toward the inside of the vehicle 1, and then bends downward at an obtuse angle θ. As a modification of the hook portion 22, it may be bent upward.

As shown in FIG. 2, the interior sheet material 10 has a first slit 13 and a second slit 14 as a second opening provided in a central portion 12 in the longitudinal direction X, which is a different position from the first slit 13. For ease of explanation, the drawings subsequent to FIG. 2 show the second slit 14 in a schematic expanded state in the longitudinal direction X.

Both the first slit 13 and the second slit 14 are cuts that penetrate the interior sheet material 10 in the thickness direction Z and extend in the short direction Y perpendicular to the longitudinal direction X. Typically, the first slit 13 and the second slit 14 can be formed by punching the interior sheet material 10.

The hooked portion 22 of the roof duct 20 is inserted into the first slit 13. At this time, the hooked portions 11 at both ends 11a, 11b of the interior sheet material 10 are engaged with the hooked portion 22 by the frictional resistance that occurs between the two when the hooked portion 22 of the roof duct 20 tries to slip out of the first slit 13.

The relative dimensions of the first slit 13 and the hooked portion 22 in the longitudinal direction X are preferably set so that the dimensions of the hooked portion 22 exceed the dimensions of the first slit 13, to the extent that the hooked portion 22 can be inserted into the first slit 13. This increases the force with which the first slit 13 tightens the hooked portion 22 compared to when the dimensions of the hooked portion 22 are equal to or smaller than the dimensions of the first slit 13, making it more difficult for the hooked portion 22 to slip out of the first slit 13.

The second slit 14 expands in the longitudinal direction X when the interior sheet material 10 stretches in the longitudinal direction X. At this time, the second slit 14 functions to relieve the tensile load in the longitudinal direction X that occurs in the interior sheet material 10 by increasing the opening width (i.e., opening dimension) in the longitudinal direction X.

It is preferable to set the dimension of the second slit 14 in the longitudinal direction X as long as possible without causing the interior sheet material 10 to break when pulled in the longitudinal direction X. This can relatively increase the effect of mitigating the tensile load of the interior sheet material 10 in the longitudinal direction X.

The number and positions of the second slits 14 are not particularly limited, but when considering the balance of the expansion of the first slits 13 at both ends 11a, 11b in the longitudinal direction X, it is preferable to place one or more second slits 14 on the center line L or in a position symmetrical to the center line L.

As shown in FIG. 3, the cross-sectional shape of the first slit 13 extends at an angle when the interior sheet material 10 is viewed in the short direction Y, so that the outside of the vehicle is higher and the inside of the vehicle is lower. In contrast, the cross-sectional shape of the second slit 14 extends vertically when the interior sheet material 10 is viewed in the short direction Y.

Next, referring to FIG. 4, the mounting structure 101 of embodiment 1 will be described by comparing the case where the second slit 14 is provided in the interior sheet material 10 (see FIG. 4(b)) with the case where the second slit 14 is not provided in the interior sheet material 10 (see FIG. 4(a)).

In FIG. 4, the state of the first slit 13 expanding is shown only for the hook portion 11 provided at one end 11a of both end portions 11a, 11b of the interior sheet material 10. The hook portion 11 provided at the other end 11b is the same as that at the one end 11a, so a description of the state of the first slit 13 expanding at the hook portion 11 at the other end 11b is omitted.

Figure 4 (a) shows a case where the first slit 13 is provided in the hook portion 11 of the interior sheet material 10, but the second slit 14 is not provided. In this case, when the interior sheet material 10 changes from the initial state A1 to the tension state A2, the first slit 13 changes from the initial state B1 to an open state B2 in the longitudinal direction X (corresponding to the "slit width direction").

Figure 4 (b) shows a case where a first slit 13 is provided in the hook portion 11 of the interior sheet material 10 and a second slit 14 is provided in the central portion 12. In this case, when the interior sheet material 10 changes from the initial state A1 to the tension state A2, the first slit 13 changes from the initial state B1 to an open state B3 opening in the longitudinal direction X, and the second slit 14 changes from the initial state C1 to an open state C2 opening in the longitudinal direction X.

Comparing Figures 4(a) and (b), it can be seen that by providing the second slit 14 in the interior sheet material 10, the opening width in the longitudinal direction X of the first slit 13 in the open state B3 can be made smaller than the opening width in the longitudinal direction X of the first slit 13 in the open state B2. In other words, by providing the second slit 14 in the interior sheet material 10, the first slit 13 becomes less likely to open. As a result, the hooked portion 22 inserted into the first slit 13 becomes less likely to slip out of the first slit 13.

Next, the effects of embodiment 1 will be explained.

According to the mounting structure 101 of the first embodiment, the hooking portion 11 hooks onto the hooked portion 22 when the interior sheet material 10 is in a stretched state in which it is pulled in the longitudinal direction X, which is a predetermined direction, and is engaged with the hooked portion 22 by utilizing the force of the interior sheet material 10 attempting to contract. This allows the interior sheet material 10 to be mounted between the roof panel 2 and the ceiling molding 3 of the vehicle 1.

In the case of such a hooking mounting structure 101, there is no need for materials costs such as devices, jigs, and adhesives for adhering or attaching the interior sheet material 10 to the vehicle 1; it is sufficient to hook the hooking portion 11 of the interior sheet material 10 to the hooked portion 22 on the vehicle 1 side. In addition, the workload required to attach the interior sheet material 10 to the vehicle 1 can be reduced. In particular, the reduction in the workload is a major benefit when attaching the interior sheet material 10 to the vehicle 1, such as a roof silencer, which needs to be attached over a wide area between the roof panel 2 and the ceiling molding 3.

Therefore, according to the first embodiment, it is possible to provide a mounting structure 101 that is effective for mounting the interior sheet material 10 to a vehicle easily and at low cost.

According to the mounting structure 101 of the first embodiment, when the hooking portion 11 of the interior sheet material 10 is inserted into and hooked on the first slit 13 provided on the hooked portion 22 on the vehicle side, the second slit 14, which is separate from the first slit 13, expands in the longitudinal direction X, thereby mitigating the tensile load in the longitudinal direction X of the interior sheet material 10. Therefore, compared to a case in which the interior sheet material 10 does not have the second slit 14, the tensile load acting on the first slit 13 is weakened, thereby reducing the opening width in the longitudinal direction X, and the hooking portion 11 of the interior sheet material 10 is less likely to come off the hooked portion 22 on the vehicle 1 side. As a result, the reliability of the mounting structure by hooking the interior sheet material 10 can be improved.

According to the mounting structure 101 of the first embodiment, both the first slit 13 and the second slit 14 are slits that extend in the short direction Y, which reduces the cost of manufacturing the interior sheet material 10 having the hook portion 11.

According to the mounting structure 101 of the first embodiment, by forming the hook portion 22 using a part of the roof duct 20, it is possible to prevent an increase in the number of parts required to engage the hook portion 11 of the interior sheet material 10.

According to the mounting structure 101 of the first embodiment, by making the bending angle θ of the hook portion 22 an obtuse angle, it is possible to integrally mold the roof duct 20 having the hook portion 22. This reduces the cost of manufacturing the roof duct 20 having the hook portion 22.

Below, other embodiments related to embodiment 1 will be described with reference to the drawings. In the other embodiments, elements that are the same as those in embodiment 1 are given the same reference numerals, and descriptions of the same elements will be omitted.

(Embodiment 2)
5, the mounting structure 201 of the second embodiment differs from the mounting structure 101 of the first embodiment in that the shape of the hooked portion 22A of the roof duct 20 is different from the shape of the hooked portion 22. The hooked portion 22A is a plate piece whose plate width direction is the vehicle length direction of the vehicle 1, similar to the hooked portion 22. Meanwhile, the hooked portion 22A is configured so that the bending angle θ is 90° or an acute angle.

The rest of the configuration is the same as in embodiment 1.

According to the mounting structure 201 of the second embodiment, the hook portion 22A is more easily caught in the first slit 13 than the hook portion 22 of the first embodiment, and the holding force of the interior sheet material 10 is increased. In particular, if the angle θ is an acute angle and the hook portion 22A is shaped like a hook, it is effective in further improving the holding force of the interior sheet material 10. In this case, if it is difficult to integrally mold the roof duct 20 having the hook portion 22A, the hook portion 22A can be molded separately from the duct main body 21 and then attached to the duct main body 21 later.

Otherwise, it has the same effects as embodiment 1.

The present invention is not limited to the exemplary embodiment described above, and various applications and modifications are possible without departing from the purpose of the present invention. For example, the following forms can be implemented by applying the above-described embodiment.

In the above embodiment, an example was given of a case in which a second slit 14 is provided as a second opening in the central portion 12 of the interior sheet material 10, but the second opening is not limited to only the second slit 14, and a second opening of a different shape other than a slit may also be used.

For example, as shown in FIG. 6, instead of the second slit 14, an elliptical opening 15 (second opening) that has an elliptical shape when the interior sheet material 10 in the initial state A1 is viewed in the thickness direction Z can be used. This elliptical opening 15 may be a through hole that penetrates the interior sheet material 10 in the thickness direction Z, or it may be a recess that does not penetrate the interior sheet material 10 in the thickness direction Z.

In the above embodiment, the hooked portion 22, 22A is a plate portion, but the shape of the hooked portion 22, 22A is not limited to this, and a shape other than a plate portion can be used as necessary.

For example, the structure of the hooked portion 22, 22A can be a structure in which multiple pin-shaped or comb-shaped engaging claws extending in the vehicle width direction are arranged in parallel at intervals in the vehicle length direction. In this case, the first slit 13 of the interior sheet material 10 can be used as is, or, if necessary, multiple through holes can be provided in the interior sheet material 10 into which each of the multiple engaging claws can be inserted.

In the above embodiment, the hook portions 22, 22A are provided on the roof duct 20, but instead, the portions corresponding to the hook portions 22, 22A may be provided on the roof panel 2, the ceiling molding 3, etc.

In the above embodiment, a hook structure between the first slit 13 of the interior sheet material 10 and the hooked portion 22, 22A of the roof duct 20 is illustrated, but instead of this hook structure, a hook structure can be used in which a cut opening is provided on the hooked portion 22, 22A side, and the hook portion 11 of the interior sheet material 10 is pushed into the cut opening to hook it.

For example, as shown in FIG. 7, the hooked portion 22B according to the modified example includes a cut opening 23 and a sheet holding portion 25. The cut opening 23 is a slit that penetrates the hooked portion 22B in the thickness direction Z, and is composed of multiple cut lines extending radially from a virtual opening center 24a. The sheet holding portion 25 is composed of multiple holding pieces 26 that are divided by the cuts 24 and can be deformed in the thickness direction. The tip 16a of each holding piece 16 on the opening center 14a side is sharp-pointed. As shown in the lower part of FIG. 7, the cut opening 23 is expanded by the pushing operation of the hook portion 11 of the interior sheet material 10 to form an opening region 23a. At this time, the holding piece 16 can hook the hook portion 11 pushed into the opening region 23a with its tip 16a to lock it.

In the above embodiment, the hook portion 11 is provided on both ends 11a, 11b of the interior sheet material 10, but instead, the hook portion 11 can be provided on one of the ends 11a, 11b and an attachment portion in a form other than hooking (such as adhesion or pasting) can be provided on the other end 11a, 11b. Also, the hook portion 11 can be provided at any position between the ends 11a, 11b of the interior sheet material 10 as needed.

In the above embodiment, the second slit 14 is provided in the interior sheet material 10, but for example, if the desired mounting performance can be ensured without providing the second slit 14, the second slit 14 may be omitted.

In the above embodiment, the mounting structure of the roof silencer as the interior sheet material 10 is illustrated, but this mounting structure can also be applied to the mounting of another interior sheet material that is mounted between the roof panel 2 and the ceiling molding 3 of the vehicle 1.

REFERENCE SIGNS LIST 1 vehicle 2 roof panel 3 ceiling molding 4 roof portion 10 interior sheet material 11 hook portion 11a, 11b both ends 13 first slit (first opening)
14 Second slit (second opening)
15 Elliptical opening (second opening)
20 roof duct 21 duct body 21a air conditioning air flow path 22, 22A, 22B hooked portion 101, 201 mounting structure for vehicle interior sheet material X longitudinal direction Y transverse direction

Claims (4)

A mounting structure for a vehicle interior sheet material, which mounts an interior sheet material between a roof panel and a ceiling molding of a vehicle, comprising:
A hook portion provided on the interior sheet material;
a hooked portion provided on the vehicle for engaging the hook portion by utilizing the elasticity of the interior sheet material;
Equipped with
When a vehicle width direction of the vehicle is defined as a longitudinal direction of the interior sheet material, the hooking portion is provided on at least one of both end portions of the interior sheet material in the longitudinal direction and has a first opening into which the hooked portion is inserted,
the interior sheet material has a second opening provided at a position different from the first opening for relieving the tensile load in the longitudinal direction . 2. The mounting structure for a vehicle interior sheet material according to claim 1 , wherein the first opening and the second opening of the interior sheet material are both slits extending in a lateral direction perpendicular to the longitudinal direction. 3. The mounting structure for a vehicle interior sheet material according to claim 1 , wherein the hooked portion is provided on a roof duct extending along a vehicle length direction on a roof portion of the vehicle. The roof duct has a duct body provided with an air conditioning air flow path through which air conditioning air flows,
4. The mounting structure for a vehicle interior sheet material according to claim 3 , wherein the hooked portion extends from the duct body toward an inside of the vehicle so as to be bent at an obtuse angle.

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