JP7054930B2 - Vehicle interior materials - Google Patents

Description

The present invention relates to an interior material for a vehicle provided in a vehicle interior, and particularly belongs to the technical field of a structure including a skin material and a base material.

Conventionally, vehicle interior materials such as armrests have been provided in the passenger compartment of an automobile. This type of vehicle interior material generally includes a base material made of a hard resin and a skin material made of a flexible resin, and the skin material is provided while ensuring mounting rigidity to the vehicle by the base material. The flexibility of the occupant makes it possible to obtain the softness when touched by the occupant (see, for example, Patent Documents 1 and 2).
The vehicle armrest of Patent Document 1 is formed by forming a plurality of spacer ribs on the back surface of a skin material provided so as to cover a base material. When the occupant puts his elbow on the surface of the skin material, the spacer rib bends and deforms, and the elastic rebound force at that time acts to obtain cushioning property.

Further, a foam layer is provided on the back side of the skin material of the vehicle armrest of Patent Document 2 so as to form a gap between the armrest and the base material. A plurality of protrusions protruding toward the foam layer are formed on the base material.

Japanese Unexamined Patent Publication No. 2000-85434 Japanese Unexamined Patent Publication No. 2010-21570

By the way, there are cases where it is desired to give the interior material for a vehicle softness at a low load. Here, the low load is an extremely low load such as when the occupant's finger is lightly touched. By having such softness at low load, it is possible to improve the soft feeling that the occupant feels when touching the interior material for the vehicle, and as a result, give the occupant a sense of luxury and high quality. Can be done.

The hardness and softness of the interior material for vehicles is determined by how much the skin material on which the load is applied is displaced in the direction in which the load is applied. The smaller the displacement, the harder it feels. However, if the amount of displacement of the skin material when a load is applied is too large, a feeling of hollowness will occur as if the inside is empty. It was difficult to improve the soft feeling while preventing it from occurring.

In the case of Patent Document 1, since it is assumed that the occupant puts his elbow on the surface of the skin material, the structure is such that the softness under a low load as described above is hardly felt. That is, a plurality of spacer ribs are formed on the back surface of the skin material, and the tips of these spacer ribs are in contact with the base material. It is considered that when the skin material and the base material are stretched, for example, when the finger is lightly touched, the reaction force of the spacer rib acts on the pad of the finger in a dot-like manner, and a good soft feeling cannot be obtained.

Further, in the case of Patent Document 2, the cushion layer of the skin material is supported by a plurality of protrusions from the back side thereof with respect to the base material. Patent Document 2 describes that the feel can be adjusted by the protrusions, but the adjustment of the feel by the protrusions is not the feel when a finger is lightly touched as described above, but a larger load is applied. This is the case. That is, in Patent Document 2, since the cushion layer is provided on the skin material, the skin material becomes thicker by the amount including the cushion layer, and the skin material itself is unlikely to be deformed at the time of low load as described above, and as a result, it is soft. It is hard to feel.

The present invention has been made in view of this point, and an object thereof is good when an extremely low load is applied, such as when a occupant's finger is lightly touched, while preventing a feeling of cavity. The idea is to get a soft feeling.

In order to achieve the above object, in the present invention, a plurality of protrusions are provided between the flexible skin material and the cushion material, and a gap is provided between the skin material and the cushion material in a no-load state. bottom.

The first invention is a vehicle interior material comprising a base material, a cushion material made of a foam material laminated on the base material, and a skin material made of a flexible resin material covering the cushion material. Between the material and the cushion material, a plurality of pieces that project toward the cushion material and come into contact with the cushion material to form a gap between the skin material and the cushion material in a no-load state. Cylindrical or prismatic protrusions are provided at intervals from each other , and the distance between the plurality of protrusions is on the back surface of the skin material when the skin material is displaced in a direction approaching the cushion material under a load. The cushioning material is set so as to come into contact with the portion between the protrusions .

According to this configuration, when no load is applied to the skin material, a plurality of protrusions come into contact with the cushion material to form a gap between the skin material and the cushion material. When an extremely low load is applied to the skin material, for example, by lightly touching the occupant's finger, the protrusions are buried in the cushion material, so that the displacement of the loaded portion of the skin material is allowed. Until the protrusions are completely buried in the cushion material, there is a gap between the skin material and the cushion material, so that the load required for the displacement of the skin material is extremely low. Therefore, it is possible to increase the displacement amount of the skin material when a low load is applied, and the occupant feels the skin material soft. When the skin material is displaced, the protrusions are buried in the cushion material, so that the protrusions do not act as if they are stretched, so that a good soft feeling can be obtained. Further, since the protrusions are in contact with the cushion material in the no-load state, the reaction force due to the cushion material acts from the moment when the occupant's finger touches and the load increases, and a feeling of cavity does not occur.

Further, when the load applied to the skin material becomes large, the cushion material can be brought into contact with the portion between the protrusions on the back surface of the skin material, and a wide range of the skin material can be supported by the cushion material.

The second invention is characterized in that the protruding end portion of the protrusion is embedded in the cushion material in a no-load state.

According to this configuration, since the protrusions exert an anchor effect, the epidermis material is less likely to be displaced and wrinkles are less likely to occur on the epidermis material.

The third invention is characterized in that the protruding end portion of the protrusion has a tapered shape.

According to this configuration, the tip portion of the protrusion easily bites into the cushion material, and the anchor effect of the protrusion is further enhanced.

The fourth invention is characterized in that the dimension of the protrusion in the protruding direction is set shorter than the thickness of the cushion material.

According to this configuration, when a large load is applied to the skin material, it becomes difficult for the protrusions to stick to the base material, and a feeling of bottoming does not occur.

A fifth aspect of the invention is characterized in that the plurality of protrusions are integrally molded on the back surface of the skin material.

According to this configuration, the relative displacement between the protrusion and the skin material does not occur, so that the protrusion does not easily shift and the skin material does not easily wrinkle when the protrusion bites into the cushion material. Become .

The sixth invention is characterized in that the vehicle interior material is an armrest provided on a door trim.

According to this configuration, when the occupant touches the armrest of the door trim, there is no feeling of hollowness, and a good soft feeling can be obtained.

According to the first invention, a plurality of protrusions are provided between the flexible skin material and the cushion material, and a gap is provided between the skin material and the cushion material in a no-load state, so that a feeling of hollowness is obtained. It is possible to obtain a good soft feeling when an extremely low load is applied, such as when the occupant's finger is lightly touched, while preventing the occurrence. In addition, when the skin material receives a load and is displaced in a direction approaching the cushion material, the cushion material comes into contact with the back surface of the skin material, so that the cushioning property of the cushion material is improved when the load received by the skin material increases. You can get enough.

According to the second invention, since the tip of the protrusion in the protruding direction is embedded in the cushion material in a no-load state, the displacement of the skin material and the occurrence of wrinkles on the skin material are suppressed, and the appearance is improved. Can be done.

According to the third invention, since the tip of the protrusion in the protruding direction has a tapered shape, the anchor effect of the protrusion can be further enhanced.

According to the fourth invention, since the dimension of the protrusion in the protruding direction is shorter than the thickness of the cushion material, it is possible to prevent the feeling of bottoming out under a large load.

According to the fifth invention, since a plurality of protrusions are integrally molded on the back surface of the skin material, it is possible to suppress the displacement of the skin material and the occurrence of wrinkles on the skin material .

According to the sixth invention, the armrest of the door trim can be given a good soft feeling.

It is a side view which looked at the door trim provided with the armrest which concerns on embodiment of this invention from the vehicle interior side. It is a perspective view which looked at the armrest from the front. FIG. 2 is a sectional view taken along line III-III of FIG. It is a partially enlarged sectional view of an armrest. It is a figure explaining the relationship between the deformation amount of a finger and the deformation amount of a skin material. It is a figure corresponding to FIG. 4 when a low load is applied. It is a graph which shows the relationship between the load acting on the skin material, and the displacement amount of the skin material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 shows a door trim 100 provided with an armrest 1 as a vehicle interior material according to an embodiment of the present invention. The door trim 100 is attached to the vehicle interior side of an automobile door (not shown) and is formed so as to cover the vehicle interior side of the door. This door trim 100 is also an interior material for vehicles. A trim upper skin 101 is provided on the upper portion of the door trim 100 on the vehicle interior side, and the trim upper skin 101 extends in the front-rear direction on the upper portion of the door trim 100. Further, a trim lower skin 102 is provided below the trim upper skin 101 on the vehicle interior side of the door trim 100. In the description of this embodiment, the front side of the vehicle is simply referred to as "front", and the rear side of the vehicle is simply referred to as "rear".

The armrest 1 is attached to the vertical intermediate portion of the door trim 100, bulges toward the vehicle interior side, and has a long shape in the front-rear direction. As shown in FIG. 3, in this embodiment, the armrest 1 has a base material 10, a cushion material 20, and a skin material 30.

The base material 10 is made of a resin material that is harder than the materials constituting the cushion material 20 and the skin material 30, and has rigidity that can maintain the shape of the armrest 1 and secures high mounting rigidity of the armrest 1. It is configured in. The base material 10 has an upper plate portion 11 extending in the vehicle interior / outer direction, and a vertical plate portion 12 extending downward from the vehicle interior side of the upper plate portion 11, and the upper plate portion 11 and the vertical plate portion 12 Is integrally molded. A side wall portion 11a that projects upward and extends in the front-rear direction is formed at an end portion of the upper plate portion 11 on the outer side of the vehicle interior. A flange portion 11b is formed at the upper end portion of the side wall portion 11a so as to project outward from the vehicle interior and extend in the front-rear direction.

The vehicle interior side of the upper plate portion 11 extends while curving downward. At the end of the upper plate portion 11 on the vehicle interior side, a side wall portion 11c that protrudes toward the vehicle interior side and extends in the front-rear direction is formed. The upper end portion of the vertical plate portion 12 is continuous with the end portion of the side wall portion 11c on the vehicle interior side. The vertical plate portion 12 extends while being inclined or curved so as to be located on the outer side of the passenger compartment toward the lower side.

A cushion material 20 is continuously provided between the side wall portion 11a and the side wall portion 11c of the base material 10, and the cushion material 20 is in a state of being laminated on the base material 10. The cushion material 20 is provided from the upper surface of the armrest 1 to the corner portion on the vehicle interior side so as to cover a portion that is easily touched when the occupant puts his / her hand on the armrest 1.

The cushion material 20 is made of, for example, an elastic foam material or the like. The back surface of the cushion material 20 is arranged on the upper surface of the upper plate portion 11 and also on the inner surface of the side wall portion 11a and the inner surface of the side wall portion 11c. The base material 10 and the cushion material 20 may be integrally molded, or may be separately molded and then arranged.

The skin material 30 is a member made of a flexible resin material formed so as to cover the entire cushion material 20. The skin material 30 may be integrally molded with the base material 10 and the cushion material 20, or may be provided so as to cover the base material 10 and the cushion material 20 after being molded separately from the base material 10 and the cushion material 20. You may.

The end portion of the skin material 30 on the outside of the vehicle interior is formed so as to extend along the flange portion 11b of the base material 10 and then extend along the back side of the flange portion 11b so as to wrap around the outer surface of the side wall portion 11a. .. The end portion of the skin material 30 on the outside of the vehicle interior is joined to the back side of the flange portion 11b and the outer surface of the side wall portion 11a.

The vehicle interior side of the skin material 30 extends downward along the vertical plate portion 12 of the base material 10 to the lower end portion of the vertical plate portion 12. The lower end portion of the skin material 30 is bent outward so as to cover the lower end portion of the vertical plate portion 12, and then bent upward and joined to the back surface of the vertical plate portion 12.

A plurality of protrusions 31 are provided between the skin material 30 and the cushion material 20. The protrusion 31 is provided only on the portion of the skin material 30 that covers the cushion material 20, and is not provided on the portion that covers the vertical plate portion 12. Therefore, the portion of the skin material 30 that covers the vertical plate portion 12 is directly adhered to the vertical plate portion 12. Further, the plurality of protrusions 31 are arranged at intervals in the front-rear direction and the left-right direction (vehicle width direction). The shape of the protrusion 31 may be columnar or prismatic. The protrusions 31 may all have the same shape, or some of the protrusions 31 may have a different shape from the other protrusions 31.

As shown in FIG. 4, the protrusion 31 is integrally molded on the back surface of the skin material 30, and is made of the same resin material as the resin material constituting the skin material 30. As a result, the relative positions of the protrusions 31 and the skin material 30 do not shift, and the relative positions of the protrusions 31 and the protrusions 31 do not shift. The protrusion 31 may be separate from the skin material 30.

Further, the protrusion 31 projects toward the cushion material 20 and is in contact with the cushion material 20. As a result, as shown in FIG. 4, a gap portion S is formed between the skin material 30 and the cushion material 20 when the occupant or the like is not in contact with the skin material 30, that is, in a no-load state. To. In the no-load state, only the protruding end portion of the protrusion 31 is embedded in the cushion material 20, and the base end portion and the intermediate portion of the protrusion 31 are not embedded in the cushion material 20.

The tip of the protrusion 31 in the protruding direction has a so-called tapered shape formed so as to become thinner as it approaches the tip. As a result, the tip portion of the protrusion 31 in the protrusion direction easily bites into the cushion material 20, and the anchor effect of the protrusion 31 is enhanced. The tip portion of the protrusion 31 may have the same cross-sectional shape as the base end portion and the intermediate portion without having a tapered shape.

Further, the dimension of the protrusion 31 in the protruding direction is set shorter than the thickness of the cushion material 20, and specifically, the dimension of the protrusion 31 in the protruding direction is preferably 1/2 or less of the thickness of the cushion material 20. Is 1/4 or less. As a result, even if a large load acts on the skin material 30 and the skin material 30 is greatly displaced, it is possible to prevent the feeling of bottoming out due to the presence of the protrusions 31.

Further, the distance between the plurality of protrusions 31 is such that when the skin material 30 receives a load and is displaced in a direction approaching the cushion material 20, the cushion material 20 comes into contact with the portion between the protrusions 31 on the back surface of the skin material 30. Is set to. That is, when the distance between the protrusions 31 is narrow and the protrusions 31 are densely packed, the cushion material 20 is located between the protrusions 31 on the back surface of the skin material 30 when the skin material 30 is displaced in a direction approaching the cushion material 20. However, in this embodiment, when the skin material 30 is displaced in a direction approaching the cushion material 20, the cushion material 20 reliably contacts the portion between the protrusions 31 on the back surface of the skin material 30. The spacing between the protrusions 31 is set so as to do so. As a result, the back surface of the skin material 30 can be directly supported by the cushion material 20 to provide cushioning properties. The protrusions 31 may be uniformly arranged on the back surface of the skin material 30 or may be unevenly arranged. The amount of displacement of the skin material 30 can be adjusted according to the number, shape, thickness, density, etc. of the protrusions 31.

FIG. 5 is a schematic view illustrating the relationship between the amount of deformation of the finger A and the amount of deformation of the skin material 30, and in this figure, the protrusion 31, the cushion material 20, and the base material 10 are omitted. When the occupant's finger A touches the skin material 30 of the armrest 1, the finger A pushes the skin material 30. It is assumed that the shape of the belly of the finger A touching nothing is the shape shown by the virtual line. When the skin material 30 is pressed with the pad of the finger A, the pad of the finger A is crushed by the dimension C as shown by the solid line due to the reaction force from the skin material 30 (the direction of the reaction force is indicated by the arrow B). On the other hand, the skin material 30 is displaced by the dimension D when pressed by the finger A. When the dimension C indicating the amount of crushing of the finger A is large and the dimension D indicating the amount of displacement of the skin material 30 is small, the occupant feels that the skin material 30 is hard, but the dimension C indicating the amount of crushing of the finger A is small and the skin. When the dimension D indicating the displacement amount of the material 30 is large, the occupant feels that the skin material 30 is soft. However, if the reaction force from the skin material 30 is hardly felt by the finger A, a hollow feeling such as an empty inside is generated, so that the dimension C indicating the amount of crushing of the finger A is necessary to some extent. Therefore, in the initial stage when the finger A comes into contact with the skin material 30, the crushing of the finger A progresses, and after the load increases to some extent, the skin material 30 is gradually displaced, even if the load at that time is extremely low. It is preferable to set the displacement amount of the skin material 30 so that the skin material 30 is largely displaced.

In order to realize this, in the present embodiment, as shown in FIG. 4, the skin material 30 having flexibility that can be easily deformed with a low load is provided with a plurality of protrusions 31 that come into contact with the cushion material 20 without any protrusions 31. A gap S is provided between the skin material 30 and the cushion material 20 under load. When the finger A is lightly placed on the surface of the skin material 30, the skin material 30 is supported by the cushion material 20 by the protrusions 31, so that the skin material 30 is deformed by the repulsive force of the cushion material 20 at the initial stage when the load is extremely low. Is suppressed and the belly of finger A is crushed. The load at this initial stage is an extremely low load, such as when the finger A is simply placed on the skin material 30 without applying force.

Then, when a slight force is applied to the finger A, the load acting on the skin material 30 gradually increases. At this time, there is a gap S between the skin material 30 and the cushion material 20, and the skin material 30 is supported in a narrow range with respect to the cushion material 20 only by the protrusions 31. Therefore, FIG. As shown in the above, even if the load from the finger A is low, the protrusion 31 is easily buried in the cushion material 20, and the skin material 30 is displaced in the direction approaching the cushion material 20. Until the protrusion 31 is completely buried in the cushion material 20, since there is a gap S between the skin material 30 and the cushion material 20, the load required for the displacement of the skin material 30 is extremely low. Therefore, it becomes possible to increase the displacement amount of the skin material 30 when a low load is applied, and the occupant feels the skin material 30 soft. When the skin material 30 is displaced, the protrusions 31 are gradually buried in the cushion material 20, so that the protrusions 31 do not act to stretch between the skin material 30 and the cushion material 20, and thus a good soft feeling is obtained. can get. Further, since the protrusion 31 is in contact with the cushion material 20 in the no-load state, a minute reaction force due to the cushion material 20 acts from the moment when the occupant's finger A touches the skin material 30, and the cavity is formed. There is no feeling.

FIG. 7 shows the relationship between the load acting on the skin material 30 of the armrest 1 according to the present invention and the displacement amount of the skin material 30, and the load acting on the skin material of the armrest and the displacement amount of the skin material according to the comparative example. It is a graph which shows the relationship. The vertical axis shows the magnitude of the load acting on the skin material, and the load increases as it goes up. The horizontal axis is the displacement amount of the portion of the skin material on which the load is applied, and the displacement amount increases toward the right. The load characteristics according to the present invention are shown by solid lines, and the load characteristics according to the comparative example are shown by broken lines. In the present invention, as shown in FIG. 4, the skin material 30 is provided with a plurality of protrusions 31 in contact with the cushion material 20, and a gap portion S is provided between the skin material 30 and the cushion material 20 in a no-load state. It is a composition. On the other hand, although not shown in the comparative example, the back surface of the skin material is not provided with protrusions, and the entire back surface of the back surface of the skin material is brought into contact with the cushion material.

As is clear from this graph, the displacement amount of the skin material 30 when a low load P1 is applied is about twice as large as that of the comparative example in the present invention. Thereby, the present invention can obtain a soft feel as compared with the comparative example. Further, when a large load P2 is applied, the difference in the amount of displacement between the present invention and the comparative example becomes small.

(Action and effect of the embodiment)
As described above, according to the armrest 1 according to this embodiment, a plurality of protrusions 31 are provided between the flexible skin material 30 and the cushion material 20, and the skin material 30 and the cushion material 20 are provided in a no-load state. Since the gap portion S is provided between the and, it is possible to obtain a good soft feeling when an extremely low load is applied, such as when the occupant's finger touches lightly, while preventing the feeling of hollowness from occurring.

Further, since the tip portion of the protrusion 31 in the protruding direction is embedded in the cushion material 20 in a no-load state, the protrusion 31 exerts an anchor effect. As a result, the displacement of the skin material 30 and the occurrence of wrinkles on the skin material 30 can be suppressed, and the appearance can be improved.

Further, since the tip portion of the protrusion 31 in the protrusion direction has a tapered shape, the anchor effect of the protrusion 31 can be further enhanced.

Further, since the dimension of the protrusion 31 in the protruding direction is shorter than the thickness of the cushion material 20, it is possible to prevent the feeling of bottoming out when a large load is applied.

Further, since the plurality of protrusions 31 are integrally molded on the back surface of the skin material 30, it is possible to suppress the displacement of the skin material 30 and the occurrence of wrinkles on the skin material.

Further, when the skin material 30 receives a load and is displaced in a direction approaching the cushion material 20, the cushion material 20 comes into contact with the back surface of the skin material 30, so that the cushion is cushioned when the load received by the skin material 30 becomes large. The cushioning property of the material 20 can be sufficiently obtained.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Further, all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

Further, in the above embodiment, the case where the present invention is applied to the armrest 1 has been described, but the present invention is not limited to this, and the present invention is applied to the vehicle interior side of the door trim 100, the lid of the console box, the instrument panel, and the like. You can also do it.

As described above, the vehicle interior material according to the present invention can be used, for example, as a member constituting a door trim.

1 Armrest (Vehicle interior material)
10 Base material 20 Cushion material 30 Skin material 31 Protrusion S Void part

Claims (6)

With the base material
A cushioning material made of a foaming material laminated on the base material and
In a vehicle interior material provided with a skin material made of a flexible resin material that covers the cushion material.
The skin material and the cushion material project toward the cushion material and come into contact with the cushion material to form a gap between the skin material and the cushion material in a no-load state. Multiple columnar or prismatic protrusions are spaced apart from each other and
The distance between the plurality of protrusions is set so that the cushion material comes into contact with the portion between the protrusions on the back surface of the skin material when the skin material is displaced in a direction approaching the cushion material under a load. Interior material for vehicles, which is characterized by being made. In the vehicle interior material according to claim 1,
An interior material for a vehicle, wherein the protruding end portion of the protrusion is embedded in the cushion material in a no-load state. In the vehicle interior material according to claim 2,
An interior material for a vehicle, characterized in that the tip of the protrusion in the protruding direction has a tapered shape. In the vehicle interior material according to any one of claims 1 to 3.
An interior material for a vehicle, characterized in that the dimension of the protrusion in the protruding direction is set shorter than the thickness of the cushion material. In the vehicle interior material according to any one of claims 1 to 4.
A vehicle interior material, wherein the plurality of protrusions are integrally molded on the back surface of the skin material. The vehicle interior material according to any one of claims 1 to 5 .
The vehicle interior material is a vehicle interior material characterized by being an armrest provided on a door trim.

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