JP2020093579A - Vehicle interior material - Google Patents

Abstract

To provide a vehicle interior material having a highly rigid part and suppressing increase in cycle time when manufactured.SOLUTION: A vehicle interior material includes a general part and a highly rigid part having higher rigidity than that of the general part. The highly rigid part is a part forming the interior side of a cavity opening to a vehicle room, and includes (a) a body part facing the vehicle room, (b) a plurality of ribs provided on the exterior side of the body part, and (c) a cover part connected to a part of the outer periphery of the body part via an integral hinge and covering the plurality of ribs in a condition of being folded back to the exterior side of the body part in the integral hinge. A configuration to conceal unevenness caused by the plurality of ribs while securing rigidity by the plurality of ribs for reinforcement can be molded in one molding step.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle interior material arranged in a vehicle compartment.

Patent Document 1 below describes a door trim of a side door for a vehicle as an interior material for vehicles, and the door trim has a door pocket. The door trim is formed by integrating a portion of the pocket that forms the outside of the vehicle compartment (pocket back cover) via a hinge, and bending the hinge at the hinge to form a locking claw formed on the back of the door trim. It is configured to be fixed using. Patent Document 1 below describes that the structure and assembly of the pocket portion in the interior trim can be performed easily and inexpensively.

JP-A-11-240388

In the case where the interior trim described in Patent Document 1 has the pocket as described above, an occupant puts his/her hand inside or takes out the inside of the portion forming the interior side of the pocket. At that time, a pulling force may be applied to the indoor side. As described above, when the interior material for a vehicle has a cavity that opens into the room, it is desirable to increase the rigidity of the portion forming the interior side of the cavity. For example, if the thickness is increased in order to form a highly rigid portion (highly rigid portion), there is a problem that the cooling time after the molding process becomes long and the cycle time at the time of manufacturing the interior material for a vehicle becomes long. In addition, when a rib is provided on the inner surface of the cavity to form the high-rigidity portion, it is desired to hide the rib at a position touched by the occupant's hand or at a position in the occupant's visual field. That is, when the ribs are provided, a separate member or the like is required to hide the ribs, and the cycle time at the time of manufacturing the interior material for a vehicle becomes long.

The present invention has been made in view of such an actual situation, and an object thereof is to suppress an increase in cycle time at the time of manufacturing an interior material for a vehicle having a highly rigid portion.

In order to solve the above problems, the vehicle interior material of the present invention,
An interior material for a vehicle, which is arranged in a vehicle compartment and includes a general portion and a high-rigidity portion having higher rigidity than the general portion,
The high-rigidity portion is a portion that forms an inner side of a cavity that opens to the vehicle compartment, and (a) a main body portion that faces the vehicle compartment, and (b) a plurality of ribs provided outside the main body portion. And (c) a cover portion that is connected to a part of the outer edge of the main body portion via an integral hinge and that covers the plurality of ribs in a state of being folded back to the outdoor side of the main body portion in the integral hinge, It is characterized by having.

In the vehicle interior material having this configuration, the main body and the cover for hiding the reinforcing ribs formed on the back side of the main body are integrally formed through the integral hinge. .. In other words, the vehicle interior material having this configuration can be molded in a single molding step in such a manner that the plurality of ribs for reinforcement can secure rigidity while hiding the unevenness of the plurality of ribs. .. That is, according to the vehicle interior material having this configuration, it is possible to suppress an increase in the cycle time at the time of manufacturing, despite the configuration described above. In addition, since the vehicle interior material having this structure can hide the unevenness due to the ribs, it is desirable that the interior material for a vehicle be used in a place where an occupant can touch it or a place where the occupant can see it. More specifically, the vehicle interior material having this configuration has a portion where a force is applied by being caught in the opening when an occupant puts his/her hand in the cavity, for example, a storage having a pocket. Suitable for With such a configuration inside the storage, it is possible to avoid the occupant's hand coming into contact with the unevenness and giving an uncomfortable feeling when the occupant's hand is inserted.

In the above structure, the vehicle interior material may be formed of a foamable resin.

Generally, in order to locally increase the rigidity of a vehicle interior material, the thickness of that portion is increased. However, when the vehicle interior material is molded from a foamable resin, the larger the thickness, the longer the cooling time during molding. For example, if the thickness of the high-rigidity portion of the vehicle interior material is increased, the cooling time must be matched with the high-rigidity portion. That is, in a vehicle interior material made of a foamable resin, when a high-rigidity portion is formed by partially increasing the thickness, the cooling time at the time of molding becomes longer, and thus the production of the vehicle interior material ( There is a problem that the cycle time required for molding becomes long. On the other hand, in the vehicle interior material having this structure, since the rigidity can be secured while suppressing the thickness of the high-rigidity portion, the vehicle having the structure in which the thickness of the high-rigidity portion is larger than that of the general portion The cycle time can be reduced as compared with the interior material for automobiles. Therefore, the vehicle interior material having the above-mentioned configuration is particularly effective for the vehicle interior material formed of the foamable resin.

Further, in the above structure, the main body portion may have the same thickness as the general portion, and the cover portion may have a thickness equal to or less than the thickness of the general portion.

In the vehicle interior material having this structure, the portion having the largest thickness is the general portion, so that the cooling time in foam molding can be adjusted to the general portion. That is, according to the vehicle interior material having this structure, the vehicle interior material having the high rigidity portion can be molded without increasing the cycle time. Further, in the vehicle interior material having this configuration, the thickness of the cover portion is set to be equal to or less than the thickness of the general portion, so that the decrease in the volume in the cavity can be suppressed.

Further, in the above-mentioned configuration, the plurality of ribs may be configured to extend along an opening edge of the cavity.

In the vehicle interior material having this structure, the shape of the rib is limited. According to the vehicle interior material having this configuration, the rigidity of the high rigidity portion can be further increased.

Further, in the above configuration, the vehicle interior material is at least a part of a door trim of a side door of a vehicle, has a door pocket as the cavity, and the high-rigidity portion forms an interior side of the door pocket. It can be configured as a part to be.

The door pocket provided in the door trim of the vehicle side door is likely to have a pulling force toward the passenger compartment when the occupant puts his/her hand in or takes out what has been put inside. Therefore, the vehicle interior material having the above configuration is particularly effective for a door trim having such a door pocket.

According to the present invention, it is possible to suppress an increase in cycle time at the time of manufacturing an interior material for a vehicle having a highly rigid portion.

It is a figure which shows the door trim comprised including the vehicle interior material of the Example of this invention from the viewpoint from the vehicle interior side. It is sectional drawing (II-II cross section in FIG. 1) which shows the lower board which is the vehicle interior material of the Example of this invention in the viewpoint from a vehicle rear side. FIG. 3 is a cross-sectional view showing a state in which a high-rigidity portion of the lower board shown in FIG. 2 is developed, as viewed from the vehicle rear side. It is a figure which shows the lower board shown in FIG. 2 from the viewpoint from the vehicle exterior side. It is a figure which shows the state which expanded the high rigidity part of the lower board shown in FIG. 3 from the viewpoint from the vehicle exterior side. It is a figure which shows the interior material for vehicles which is another embodiment from the viewpoint from the vehicle exterior side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention. The present invention is not limited to the following embodiments, and can be carried out in various modes with various modifications and improvements based on the knowledge of those skilled in the art.

The vehicle interior material of the embodiment of the present invention is used in a vehicle door trim 10 as shown in FIG. The door trim 10 constitutes a vehicle interior side portion of a side door for a vehicle, and although not shown, is attached to the door inner panel from the vehicle interior side. The door trim 10 is mainly configured by a generally rectangular trim board 11, and in addition to the trim board 11, an inside handle 12, a door grip 13, a switch base 14, an armrest 15, a door provided on the trim board 11. It is configured to include various functional parts such as the pocket 16 and the speaker grill 17.

The trim board 11 is formed by assembling a plurality of board members with each other, and mainly includes an upper board 20, a lower board 21, an armrest board 22, and a door pocket board 23 (see FIG. 2 ). The inside handle 12 is provided on the upper board 20. The armrest 15 is formed by fastening the armrest board 22 to the upper side of the lower board 21 (substantially the center of the trim board 11). They are provided on the front side, respectively. The door pocket 16 and the speaker grill 17 are provided on the lower side of the lower board 21.

As shown in FIG. 2, the door pocket 16 covers the opening 21a formed in the lower board 21 and a portion of the lower side of the opening 21a so that the door pocket board 23 is provided outside the cabin of the lower board 21. It is formed by being attached. As shown in FIGS. 1 and 2, the opening 21a has a shape that opens upward and extends in the vehicle front-rear direction. The lower board 21 serves as the vehicle interior material of this embodiment. The lower board 21 as the vehicle interior material of this embodiment will be described in detail below with reference to FIGS. 2 to 5.

The lower board 21 is made of a foamable resin and is molded by foam molding. Examples of the foamable resin include one type or a combination of two or more types of urethane type foamable resin, epoxy type foamable resin, olefin type foamable resin and the like. The lower board 21 made of a foaming resin is lightweight and has high rigidity, which improves the fuel efficiency of the vehicle and is excellent in impact resistance. In the lower board 21, the occupant's hand or an object may be caught in the opening of the door pocket 16 and a pulling force may act on the lower board 21. Therefore, the portion of the door pocket 16 forming the vehicle interior side is more rigid than the surroundings. It needs to be raised. Therefore, the lower board 21 is configured to include the general portion 30 and the high-rigidity portion 31 having higher rigidity than the general portion 30. The high-rigidity portion 31 is a portion inside the broken line shown in FIG. 1, and forms the vehicle interior side of the door pocket 16 as a cavity that opens into the vehicle interior (vehicle compartment). Is the general section 30.

As shown in FIGS. 2 and 4, the high-rigidity portion 31 includes a main body portion 40 that forms a vehicle interior side portion of the door pocket 16 and faces the vehicle interior, and a cover portion that covers the vehicle interior outside of the main body portion 40. 41. Specifically, as shown in FIGS. 3 and 5, the main body 40 and the cover 41 are integrally formed by connecting the lower edge of the main body 40 and the upper edge of the cover 41 via an integral hinge 42. Have been formed in the same way. The high-rigidity portion 31 has a structure in which the integral hinge 42 has the cover portion 41 folded back to the outside of the vehicle body of the main body portion 40. In the present embodiment, the main body 40 and the cover 41 have the same thickness, and the general portion 30 also has the same thickness.

Further, a plurality of ribs 43 extending in the vehicle front-rear direction (direction along the opening edge of the opening 21a) are formed on the outer surface of the main body portion 40 in the vehicle interior at predetermined intervals in the vertical direction. The plurality of ribs 43 are divided into a first rib 43a located relatively on the upper side and a second rib 43b located on the lower side. Since the first rib 43a is located closer to the opening 21a, the first rib 43a is larger than the second rib 43b, and the rigidity of the upper side portion of the high rigidity portion 31 is higher than that of the lower side portion. ing. The second rib 43b is covered by the cover portion 41, and is not exposed on the inner surface of the door pocket 16. The opening 21 a is formed by providing a flange 50 protruding toward the outside of the vehicle compartment at the upper end of the main body 40, and the first rib 43 a is formed between the flange 50 and the upper end of the cover 41. It is arranged in between. In other words, the first rib 43a is arranged immediately below the flange 50.

On the uppermost one of the second ribs 43b, locking claws 51 are integrally formed on both the front side and the rear side of the vehicle, and the cover part 41 has these two locking claws 51. Corresponding to each, an insertion hole 52 for inserting them is formed. In other words, the locking claws 51 lock the cover portion 41 with respect to the main body portion 40 by catching on the hole edge portions (upper side portions) of the insertion holes 52 and stopping. 41 is fixed to the back side of the main body 40.

As described above, the lower board 21 (at least a part of the door trim 11) is arranged in the vehicle compartment (vehicle compartment) and includes the general portion 30 and the high-rigidity portion 31 having higher rigidity than the general portion 30. The high-rigidity portion 31 is a portion that forms the interior side of the cavity 16 that opens into the vehicle compartment, and is provided on the (a) main body portion 40 facing the vehicle interior, and (b) outside the main body portion 40. The plurality of ribs 43b are connected to (c) a part of the outer edge of the main body 40 via the integral hinge 42, and the plurality of ribs 43b are folded back to the outside of the main body 40 at the integral hinge 42. And a cover portion 41 that covers the rib 43b.

With such a configuration, the main body 40 and the cover 41 for concealing the reinforcing ribs 43b formed on the back side of the main body 40 are integrally formed via the integral hinge 42. As a result, the lower board 21 having a structure in which rigidity can be secured by the reinforcing ribs 43b and concavities and convexities due to the ribs 43b can be hidden can be molded in one molding step. That is, the lower board 21, which is the vehicle interior material of the present embodiment, can suppress an increase in the cycle time at the time of manufacturing, despite the above configuration.

Further, in the lower board 21 of the present embodiment, since the second ribs 43b are covered with the cover portion 41, even if an occupant puts his/her hand into the door pocket 16, the lower ribs 21b do not come into contact with the second ribs 43b. Further, although the first rib 43a is exposed inside the door pocket 16, since the first rib 43a is arranged immediately below the flange 50, even if an occupant puts his/her hand in the door pocket 16, the first rib 43a does not substantially contact. In the vehicle interior material of the present invention, all the ribs may be covered with the cover portion, but with the structure of this embodiment, the ribs are covered with the cover portion 41. It is possible to prevent the occupant's hand from coming into contact with the rib 43 while increasing the rigidity of the portion near the opening 21a by increasing the size of the first rib 43a not included.

In addition, the lower board 21, which is the vehicle interior material of the present embodiment, is made of a foamable resin and is molded by foam molding. For example, in order to increase the rigidity of a part of the board member, the thickness of that part is increased. However, in the case where the board member is molded with the foamable resin, the larger the thickness, the longer the cooling time during molding. That is, if the thickness of the high-rigidity portion of the vehicle interior material is increased, the cooling time must be matched with the high-rigidity portion. Therefore, in a vehicle interior material made of a foaming resin, when a high-rigidity portion is formed by partially increasing the thickness, the cooling time at the time of molding becomes longer, and thus the production of the vehicle interior material ( This causes a problem that the cycle time required for molding becomes long.

On the other hand, in the lower board 21 of the present embodiment, the high-rigidity portion 31 is configured to include the main body portion 40, the plurality of ribs 43b, and the cover portion 41, so that the thickness of the high-rigidity portion 31 is equal to that of the general portion. The rigidity can be ensured without making the thickness thicker than 30. That is, the cycle time can be reduced as compared with the vehicle interior material in which the thickness of the high-rigidity portion is larger than the thickness of the general portion. Furthermore, since the thickness of the main body portion 40 and the cover portion 41 forming the high-rigidity portion 31 is the same as the thickness of the general portion 30, the time required for the foam molding of the general portion 30 is the same. The lower board 21 can be molded by foam molding. That is, the lower board 21 having the high rigidity portion 31 can be molded without increasing the cycle time. The cover portion 41 does not have to have the same thickness as the general portion 30 and can be thinner than the general portion 30. The thinner the cover portion 41, the more the internal volume of the door pocket 16 is secured. be able to.

<Other Embodiments>

In the lower board 21, which is the vehicle interior material of the above-described embodiment, the plurality of ribs 43 are formed as a plurality of ridges having a shape extending along the opening edge of the hollow door pocket 16 (a shape extending in the vehicle front-rear direction). However, it is not limited thereto. For example, the lower board 60 shown in FIG. 6 may have a plurality of protrusions 61. The lower board 60 will be described in detail. On the outer surface of the main body 63 that constitutes the high-rigidity portion 62, a plurality of generally elliptical projections 61 are arranged in a zigzag pattern, and the plurality of projections 61 are integrated. It is configured to be covered by the cover portion 65 folded back at the le hinge 64.

Further, although the vehicle interior material of the above-described embodiment is made of the foamable resin, the invention is not limited thereto, and the vehicle interior material may be made of a synthetic resin material such as polypropylene.

Further, the lower board 21, which is the vehicle interior material of the above-described embodiment, is a part of the vehicle door trim, but the invention is not limited to this. The instrument panel, the back door on the vehicle rear side, and the interior material of the trunk room are not limited thereto. It can also be used for In addition, in the vehicle interior material of the above-described embodiment, the portion of the door pocket 16 that forms the cavity that forms the inside of the vehicle is the high-rigidity portion 31, but the location where the high-rigidity portion 31 is adopted is not limited thereto. Instead, the inside of the cavity can be adopted in other places where the occupant can touch it by hand, or in places where the occupant can see the occupant's visual field. In particular, the interior material for a vehicle of the present invention is suitable for a vehicle having a portion where a force of the passenger is caught in the opening of the cavity and a force is applied.

Furthermore, the vehicle interior material of the above-mentioned example was the interior material for vehicles, but is not limited thereto, the vehicle interior material of the present invention can be adopted in various vehicles, for example, trains and It can be applied to interior materials for vehicles such as amusement vehicles, airplanes and helicopters, and ships and submersibles.

DESCRIPTION OF SYMBOLS 10... Door trim, 16... Door pocket [cavity], 21... Lower board [Vehicle interior material], 21a... Opening part, 23... Door pocket board, 30... General part, 31... High rigidity part, 40... Main body part, 41 ... Cover part, 42... Integral hinge, 43... Plural ribs, 43a... First rib, 43b... Second rib, 60... Lower board [vehicle interior material], 61... Plural protrusions [plural ribs], 62 …High rigidity part, 63…Main body part, 64…Integral hinge, 65…Cover part

Claims (5)

An interior material for a vehicle, which is arranged in a vehicle compartment and includes a general portion and a high-rigidity portion having higher rigidity than the general portion,
The high-rigidity portion is a portion that forms an inner side of a cavity that opens to the vehicle compartment, and (a) a main body portion that faces the vehicle compartment, and (b) a plurality of ribs provided outside the main body portion. And (c) a cover portion that is connected to a part of the outer edge of the main body portion via an integral hinge and that covers the plurality of ribs in a state of being folded back to the outdoor side of the main body portion in the integral hinge, An interior material for vehicles, characterized by having The vehicle interior material according to claim 1, wherein the vehicle interior material is formed of a foamable resin. The body portion has the same thickness as the thickness of the general portion,
The vehicle interior material according to claim 2, wherein the cover portion has a thickness equal to or less than the thickness of the general portion. The vehicle interior material according to any one of claims 1 to 3, wherein the plurality of ribs have a shape extending along an opening edge of the cavity. The vehicle interior material is at least a part of a door trim of a side door of a vehicle, and has a door pocket as the cavity,
The interior material for a vehicle according to any one of claims 1 to 4, wherein the high-rigidity portion is a portion that forms an indoor side of the door pocket.

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