JP6010784B2 - Automobile interior parts, molds for car interior parts, and manufacturing method for car interior parts - Google Patents

Description

  The present invention, for example, automotive instrument panels and console boxes, door trims, handles such as assist grips for supporting the body during travel, handles such as steering wheels, etc. And a manufacturing method thereof.

  In order to obtain a soft feel, an automotive interior product is generally a skin material comprising a skin that is relatively hard and molded into a predetermined shape, and a skin that constitutes a design surface and an elastic foam layer. It is comprised by laminating | stacking.

Further, Patent Document 1 is known in which the surface of an automobile interior product, that is, the surface of a part touched by a person has a moist touch. Patent Document 1 discloses a surface structure of an article characterized in that a plurality of protrusions satisfying the following conditions (1) and (2) are provided on the surface.
(1) The height H of the protrusions is 5 μm or more and 32 μm or less. (2) At least one of the interval P between the protrusions and the interval W between the recesses formed between the protrusions is the height H of the protrusions. Bigger than

Furthermore, in the embodiment of Patent Document 1, the following conditions are described as specific conditions of the above (2) (0012).
The ratio H / P between the height H of the protrusions 3 and the interval P between the protrusions 3 is in the range of 1/5 to 1/2, or the recesses 5 formed between the height H of the protrusions 3 and the protrusions 3. The ratio H / W to the interval W is in the range of 1/5 to 1/2. In addition to the above conditions, the following conditions are also described (0012).
The interval P between the protrusions 3 is the same as the interval W between the recesses 5 (P = W)

  And in patent document 1, the protrusion is exhibiting the hemispherical shape which made the spherical shape almost the half, and the tactile sensation when the person touches by forming a plurality of such protrusions on the surface of the interior product, It is not moist, that is, it is not a smooth touch like plastic or metal. (0013, 0014). Further, in Patent Document 1, in the embodiment, a protrusion height H = 6 μm, a distance P between protrusions P = 30 μm, that is, a protrusion sample with H / P = 1/5, a protrusion height H = 32 μm, A sample of protrusions is described in which the distance between protrusions P = 64 μm, that is, H / P = 1/2 (0016).

  Patent Document 1 describes as an embodiment thereof “particularly, as shown in FIG. 1B, the surface of the interior product 1 is a convex curved surface 2, and a plurality of the extremely fine protrusions 3 described above are formed on the convex curved surface 2. By providing it uniformly, it becomes possible to realize a more “moist feeling”. In the case of the convex curved surface 2, it tends to feel softer when touched with skin such as a human fingertip or palm compared to a flat surface or concave curved surface, so that the “moist feeling” is more strongly felt. ”And the like (0024)

  Furthermore, Patent Document 1 describes a manufacturing process to be used when molding an interior product (0025 to 0035). In short, this manufacturing process consists of molding a silicon mold with the surface shape of the wooden mold between the wooden mold and the concave mold produced by powder slash molding, and removing the wooden mold and pasting it into the concave shape. A basic material is produced by pouring a conductive material into the silicon, and the basic die is immersed in an electroformed layer to complete an electroforming mold. Using this electroforming mold, powder slash molding is applied to become an interior product. The skin is manufactured.

JP 2011-104987 A

  However, in a general interior product formed by laminating a skin material composed of a skin and a foam layer on the surface of the relatively hard substrate, the number of components is large and the structure is complicated. There were problems such as time-consuming manufacturing.

  Further, in the invention described in Patent Document 1, since the protrusion height H is 6 μm to 32 μm and the distance between the protrusions P is 30 μm to 64 μm, the surface of the part touched by a person is moist. Even if it was possible to give a tactile sensation, it did not feel soft when a person stroked the surface with a hard material. In Patent Document 1, it is described that there is a tendency to feel softer when touched with skin such as a human fingertip or palm. This is the case of a curved surface, not by providing a plurality of fine protrusions uniformly.

  And in patent document 1, in the manufacturing process of the type | mold used when shape | molding interior goods, nickel electroforming transfer is carried out as a type | mold created in order to produce the skin which becomes an interior product by applying powder slash molding. I was making an electroforming mold. Therefore, in this manufacturing process, since it takes time to deposit nickel by immersing the basic mold in the electroformed layer, compared with the case where the mold is manufactured by, for example, casting or cutting steel, There was a problem that the mold production was expensive. Further, in Patent Document 1, there is a problem that the equipment becomes large in order to apply the powder slash molding, the process is complicated and time-consuming, and the cost is high.

The present invention has been made in order to solve the above-described problems, and has a simple configuration, and even if it is a relatively hard material, it can feel softness when a person strokes the surface. The purpose is to provide interior goods.
Another object of the present invention is to provide a mold that can easily and reliably manufacture the interior parts of an automobile with a simple configuration, which has been made to solve the above-described problems. And
Another object of the present invention is to provide a method capable of easily and reliably manufacturing the interior parts of the automobile in a simple process. To do.

In order to achieve the above object, the invention according to claim 1 is composed of a single layer, and a plurality of irregularities are formed on the surface, and the irregularity surface has a diameter of 5 to 20 mm, a depth of A plurality of conical recesses having a length of 50 to 300 μm are formed, and at least a concave and convex pattern with a depth of 3 to 20 μm is formed on the surface of the recess.
According to a second aspect of the present invention, there is provided a molding die for molding a single-layer automotive interior by injection-filling a molding material into a cavity in order to achieve the above object. there are, and have a cavity surface capable of forming a plurality of irregularities on the surface of the interior part, wherein the cavity surface has a diameter 5 to 20 mm, the surface recess of the interior trim of the conical shape of the depth 50~300μm A plurality of protrusions that can be formed are formed .
In order to achieve the above object, the invention according to the third aspect of the present invention relating to the automobile interior part mold is characterized in that, in the invention according to the second aspect , at least the protrusion of the cavity surface has a depth of 3 to 20 μm. It is shape | molded so that an uneven | corrugated pattern can be formed.
Furthermore, the invention according to the manufacturing method of the interior trim of a motor vehicle according to claim 4, in order to achieve the above object, a method of manufacturing a motor vehicle interior trim of contact person, in diameter 5 to 20 mm, depth Preparing a mold having a cavity surface formed with a projection capable of forming a plurality of conical recesses having a length of 50 to 300 μm on the surface of the interior product, and injection-filling the molding material into the cavity of the mold Thus, an interior product consisting of a single layer is formed.
In order to achieve the above object, an invention according to a fifth aspect of the present invention relates to a method for manufacturing an interior product of an automobile. In the invention according to claim 4 , at least the protrusions on the cavity surface have a depth of 3 to 20 μm. It is characterized in that it is molded so that a concavo-convex pattern can be formed.

According to the first aspect of the present invention, a plurality of irregularities are formed on the surface of the interior product even if the interior product is a relatively hard single layer without having a foam layer as in the prior art. Of the irregularities formed on the surface of the interior product, the concave portion has a diameter of 5 to 20 mm and a depth of 50 to 300 μm, and at least a concave and convex pattern with a depth of 3 to 20 μm is formed on the surface of the concave portion. This makes it possible to repeatedly feel a sense of pressure and release when a person strokes the surface. Arbitrary designs such as satin texture can be formed without obstructing the illusion.
According to a second aspect of the present invention, when a molding material is injection-filled into a cavity to form a single-layer automobile interior product, the cone shape has a diameter of 5 to 20 mm and a depth of 50 to 300 μm. A plurality of concaves and convexes are formed on the surface of the interior product by the cavity surface on which the protrusions capable of forming a plurality of recesses on the interior product surface are formed. The plurality of irregularities repeatedly cause a feeling of pressure and release when a person strokes the surface. Therefore, even if it is an interior product made of a relatively hard single layer, it is possible to easily mold an automobile interior product that makes it possible to feel that the person who is stroking the surface is soft, and thus feel the softness. Can be provided.
According to the invention of claim 3, in the invention of claim 2 , at least the protrusions of the cavity surface are molded so as to form a concavo-convex pattern with a depth of 3 to 20 μm. Thus, even an interior product composed of a relatively hard single layer can constitute an arbitrary design such as a textured texture without obstructing the illusion that a person who is stroking the surface is soft.
Furthermore, according to the invention of claim 4, the molding has a cavity surface in which projections capable of forming a plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm are formed on the surface of the interior product. A mold is prepared, a molding material is injected and filled into the cavity of the mold, and a single layer is formed into a single layer to easily form a plurality of irregularities on the surface of the interior product. Even if it is a relatively hard single-layer interior product, when a person strokes the surface, it repeatedly feels a sense of pressure and release, and the person who is stroking the surface has the illusion that it is soft. It is possible to provide a method capable of easily and surely manufacturing an automobile interior product capable of easily forming an automotive interior product that can be felt.
According to the invention of claim 5, in the invention of claim 4, by forming at least the convex part of the cavity surface so as to form an uneven pattern at a depth of 3 to 20 μm. Even if it is an interior product composed of a relatively hard single layer, it is possible to construct an arbitrary design such as a textured texture without hindering the illusion that a person who is stroking the surface is soft.

(Aspect of the Invention)
In the following, the invention that is claimed to be claimable in the present application (hereinafter referred to as “claimable invention”. The claimable invention is at least the “present invention” to the invention described in the claims. Some aspects of the present invention, including subordinate concept inventions of the present invention, superordinate concepts of the present invention, or inventions of different concepts) will be illustrated and described. As with the claims, each aspect is divided into sections, each section is given a number, and is described in a form that cites other section numbers as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. In each of the following terms, (1) corresponds to claim 1, (6) corresponds to claim 2, (7) corresponds to claim 3, and (8) claims. This corresponds to item 4, and item (10) corresponds to claim 5 .

(1) Consists of a single layer , with multiple irregularities formed on the surface ,
A plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm are formed on the surface of the unevenness,
An automobile interior product, wherein an uneven pattern having a depth of 3 to 20 μm is formed at least on the surface of the recess .

(1) In the invention section are irregularities of multiple formation, the recess of the irregularities formed on the surface of the interior components in diameter 5 to 20 mm, depth a conical shape of 50 to 300 [mu] m, further In addition, a concavo-convex pattern having a depth of 3 to 20 μm is formed at least on the surface of the concave portion, and a concavo-convex pattern having a depth of 3 to 20 μm is formed on the surface of at least the concave portion. Even if it is an interior product that has a relatively hard single layer without having a layer, if a person strokes the surface of the interior product, it repeatedly feels a sense of pressure and release, and the illusion that the interior product is soft . Therefore, an interior product that can be felt soft can be easily formed of a relatively hard material with a single layer. And even if an irregular pattern that forms an arbitrary design such as a textured surface with a depth of 3 to 20 μm is formed on the surface of at least the concave portion of the arbitrary design, it prevents the person who is stroking the surface from illusioning that it is soft It will not be done .

  (2) The automobile interior article described in the item (1), characterized in that the Rockwell hardness (M and R scale) is made of a material of 50 to 120.

  In the invention of the item (2), in the invention described in the item (1), unevenness is formed on the surface even if the interior material has a Rockwell hardness (M and R scale) of 50 to 120. It is possible to give an illusion that a person who is stroking the surface is soft.

( 3 ) The automobile interior article according to any one of ( 1 ) and ( 2 ), wherein the recesses adjacent to each other are arranged in a staggered manner so that the centers thereof are triangular.

In the invention of ( 3 ), in the invention described in either of ( 1 ) or ( 2 ), the concavities adjacent to each other are arranged in a staggered manner so that the centers of the conical recesses are triangular. Even if it is an interior product consisting of a relatively hard single layer, when a person strokes the surface of the interior product, it repeatedly realizes the feeling of release due to the recesses and the feeling of pressure due to the projections between the recesses. Is done.

( 4 ) The automobile interior article according to any one of ( 1 ) and ( 2 ), wherein the recesses adjacent to each other are arranged in a lattice shape so that the centers thereof are rectangular.

In the invention of the item ( 4 ), in the invention described in the item ( 1 ) or ( 2 ), the concavities adjacent to each other are arranged in a lattice shape so that the centers of the conical recesses are square. Even if it is an interior product consisting of a relatively hard single layer, when a person strokes the surface of the interior product, it repeatedly realizes the feeling of release due to the recesses and the feeling of pressure due to the projections between the recesses. Is done.

( 5 ) The automobile interior article according to any one of ( 3 ) and ( 4 ), wherein the adjacent recesses are arranged so as to contact each other.

(5) In the invention sections by being arranged such that in the invention described, contact is staggered or arranged in the shape of a lattice recesses adjacent to each other in any one of (3) or (4) term, relatively Even in the case of an interior product made of a hard single layer, when a person strokes the surface of the interior product, it is realized that a feeling of release due to the recesses and a feeling of pressure due to the projections between the recesses are repeatedly felt.

( 6 ) A molding die for molding a single-layer automobile interior by injection-filling a molding material into a cavity,
And have a cavity surface capable of forming a plurality of irregularities on the surface of the interior trim,
Molding of an interior part of an automobile, wherein the cavity surface is formed with a protrusion capable of forming a plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm on the surface of the interior part. Type.

In the invention of item ( 6 ), when the projection is formed on the cavity surface of the mold so that a plurality of irregularities can be formed on the surface of the interior product, the molding material is injected and filled into the cavity of the mold. In this way, a plurality of irregularities are formed on the surface of the molded interior product. And the some recessed part formed in the surface of this interior goods becomes a cone shape whose diameter is 5-20 mm and whose depth is 50-300 micrometers. Therefore, the molded interior product does not have a foam layer as in the conventional technology, and even if it is composed of a relatively hard material and a single layer, a plurality of unevenness formed on the surface causes a human to When the surface is boiled, it is possible to easily mold an interior product that can repeatedly feel a feeling of pressure and release, and as a result, can make the person who is stroking the surface feel soft.

( 7 ) The automobile interior article according to ( 6 ), wherein at least the protrusions on the cavity surface are formed so as to form a concavo-convex pattern with a depth of 3 to 20 μm. Mold.

In the invention of item ( 7 ), in the invention described in item ( 6 ), at least the protrusions of the cavity surface are molded so as to form a concavo-convex pattern with a depth of 3 to 20 μm. The person who is stroking the surface even if an irregular pattern that is an arbitrary design such as a textured surface of a satin texture is formed on the surface of at least the concave portion of the surface of the interior product formed with the arbitrary design by a depth of 3 to 20 μm The illusion of being soft is not obstructed.

( 8 ) A method for manufacturing interior parts of automobiles that come into contact with humans,
Prepare a mold having a cavity surface in which protrusions capable of forming a plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm are formed on the surface of the interior product,
A method for manufacturing an interior product of an automobile, comprising molding an interior product comprising a single layer by injection-filling a molding material into a cavity of the mold.

In the invention of ( 8 ), a mold having a cavity surface in which a protrusion having a diameter of 5 to 20 mm and a depth of 50 to 300 μm and capable of forming a plurality of conical recesses on the surface of the interior product is prepared. A relatively hard single layer without a foam layer as in the prior art by a simple process of injection-filling a molding material into the mold cavity and molding a single layer interior product Even if it is an interior product made of, when it is boiled, it feels repetitive to feel pressure and release, and the illusion that a person is soft. Therefore, it is possible to easily and reliably manufacture an automobile interior product that can easily form an interior product that can be felt as a soft material with a relatively hard material using a single layer.

( 1 ) The method for manufacturing an automobile interior product according to ( 8 ), wherein the interior product is molded so that the Rockwell hardness is 40 to 125.

In the invention of the item ( 9 ), in the invention described in the item ( 8 ), even if the interior parts are made of a material having a Rockwell hardness of 40 to 125, it is relatively hard by forming irregularities on the surface. Even if it is a single-layer interior, an automobile interior can be easily and reliably manufactured that allows the person who is stroking the surface to feel it soft.

( 10 ) According to (8) or (9), at least the convex portion of the cavity surface is molded so as to be able to form an uneven pattern with a depth of 3 to 20 μm. Manufacturing method for automobile interior parts.

In the invention of item ( 10 ), in the invention of item (8) or (9), at least the protrusion on the cavity surface is formed so as to be able to form a concavo-convex pattern with a depth of 3 to 20 μm. Even if it is an interior product consisting of a relatively hard single layer, it is possible to mold any design such as pear texture without obstructing the illusion that the person who is stroking the surface is soft Can be manufactured easily and reliably.

It is the perspective view which showed the surface of the interior goods of the motor vehicle shown in order to demonstrate one Embodiment of this invention. It is the expanded sectional view shown in order to demonstrate the recessed part by this invention. In the embodiment of the present invention in which adjacent concave portions are arranged so as to contact each other, a plan view (a) and a side view (b) shown for explaining a state of touching with a fingertip and performing sensory evaluation of softness is there. It is a figure which shows a sensory evaluation result. FIG. 3 is an enlarged cross-sectional view for explaining a modification of the concave portion according to the present invention shown in FIG. 2. FIG. 3 is a plan view for explaining an embodiment in which the concave portions are arranged in a staggered manner so that the centers of the concave portions adjacent to each other are triangular, as an embodiment of the arrangement of the concave portions according to the present invention. FIG. 4 is a plan view for explaining an embodiment in which the concave portions are arranged in a lattice shape so that the centers of the concave portions adjacent to each other are square, as an embodiment of the concave portion arrangement according to the present invention. It is the top view shown in order to demonstrate embodiment which arranged the recessed part at random as embodiment of the arrangement | sequence of the recessed part of this invention.

First, an embodiment of a vehicle interior product according to the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals denote the same or corresponding parts.
The interior part 1 of the automobile of the present invention is generally composed of a single layer, and is formed with a plurality of irregularities 10 and 11 that repeatedly feel a feeling of pressure and a feeling of release when a person strokes the surface.

  As described above, a general automobile interior product according to the prior art is a skin material composed of a base material that is relatively hard and molded into a predetermined shape, a skin that forms a design surface, and an elastic foam layer. The automobile interior part 1 according to the present invention is formed in a single layer from a relatively hard material (Rockwell hardness (M and R scale) 50 to 120). ing. As a material for the interior article 1, either a thermosetting resin or a thermoplastic resin can be used. As a more specific material, for example, polypropylene, ABS resin, acrylic, phenol resin, or the like can be used.

  As shown in FIG. 1, a plurality of recesses 10 are formed on the surface of the interior product 1. A convex portion 11 is formed between the concave portions 10 and 10 adjacent to each other. The concave portion 10 in this embodiment is formed in a conical shape, the diameter A is set to 5 to 20 mm, and the depth B is set to 50 to 300 μm. The distance C between the concave portions 10 and 10 constituting the convex portion 11 can be arbitrarily set as will be described later. The chain line shown in FIG. 1 is an imaginary line passing through the bottom (conical top) of the conical recesses 10 arranged to represent the irregularities 10 and 11 formed on the surface of the interior product 1. . It should be noted that the scale is different between the horizontal direction and the vertical direction in FIGS. Also, in FIG. 3B, the concave portion 10 and the convex portion 11 are exaggerated, and it should be noted that the scale is different from the actual in the horizontal direction and the vertical direction.

  In the embodiment of FIG. 2, the gap between the opening of the concave portion 10 (boundary with the convex portion 11) and the center bottom (conical top portion) is formed into a straight line in the sectional view. Further, in the embodiment shown in FIG. 5, the radius of the recess 10 is set to 5 mm (diameter A = 10 mm) and the depth B is set to 300 μm. And between the opening (the boundary with the convex part 11) of the recessed part 10 and the position 10a of half depth protrudes in the radial direction inner side with the predetermined curvature R, the position 10a of half depth and the bottom of the center (conical) It is formed into a curved shape in FIG. 5 shown in the sectional view so that the space between the tops of the shapes protrudes radially outward with a predetermined curvature R. In this case, the distance between the positions 10a and 10a that are half the depths of the recesses 10 and 10 adjacent to each other, that is, the length at the position that is half the height of the projection 11 is set to 5 mm.

  Here, a mechanism that feels soft when a person touches the surface of the interior product 1 according to the present invention to stroke. As shown in FIG. 3, when a person strokes the interior 1 and the surface with the finger F, the person's finger F repeatedly contacts the plurality of concave portions 10 and the convex portions 11 alternately. At this time, the contact portion such as the human finger F is released by the concave portion 10 and pressed by the convex portion 11 when it comes into contact with the interior product 1. The present inventors have found that even if the interior article 1 is composed of a relatively hard material and is formed of a single layer, the illusion that a person is soft is felt by alternately feeling this release and compression.

  Next, the grounds for setting the diameter A of the recess 10 to 5 to 20 mm and the depth B to 50 to 300 μm as described above will be described with reference to FIG. FIG. 4 shows a sensory evaluation by a paired comparison method when an interior product 1 in which recesses 10 having different diameters A and depths B are formed on the surface is brought into contact so that a person can stroke with a finger F. It is. In addition, the number of persons who performed this sensory evaluation is n = 15.

  In the present invention, although the interior product 1 is composed of a single layer made of a relatively hard material, the diameter A of the recess 10 is 5 to 20 mm and the depth B is 50 to 50, as shown in FIG. It felt soft in the range of 300 μm. And it was felt that it was softer when the diameter A of the recess 10 was 5 to 15 mm and the depth B was 100 to 250 μm.

  In addition, the recessed part 10 and the convex part 11 of this invention should just be what can feel a feeling of release with the recessed part 10 when a person strokes the surface, and can feel a pressure feeling with the convex part 11, and The concave portion 10 is not limited to a conical shape, such as a flat surface having a predetermined diameter or a spherical surface having a predetermined curvature.

  Moreover, the length of the convex part 11 comprised between the recessed parts 10 and 10, ie, the space | interval C of the mutually adjacent recessed parts 10 and 10, as shown in FIG.1 and FIG.2, is a predetermined range (for example, the diameter of a recessed part). A or less), and as shown in FIG. 3, the recesses 10 and 10 can be arranged so as to contact each other (C = 0 mm).

  Further, as shown in FIG. 3 or FIG. 6, the recesses 10 can be arranged in a staggered manner so that a virtual line L connecting the centers of the recesses 10 and 10 adjacent to each other has a triangular shape, As shown in FIG. 7, the virtual lines L connecting the centers of the recesses 10 and 10 adjacent to each other can be arranged in a lattice shape so as to be a quadrilateral shape. Further, as shown in FIG. Can be randomly arranged randomly. However, in order to feel a feeling of pressure and release when a person strokes the surface, the concave portions 10 are not arranged so as to overlap as shown in FIG. As shown to (a), it is desirable to arrange so that the recessed part 10 may not overlap.

In addition, on the surface of the interior product 1, there may be a case where a concavo-convex pattern (not shown) such as a textured texture that forms an arbitrary design simulating leather is formed. In this case, it is desirable that the concavo-convex pattern formed on at least the surface of the recess 10 has a depth of 3 to 20 μm. By forming the concavo-convex pattern at such a depth, it is not disturbed that a person feels soft when the surface of the relatively hard interior product 1 is boiled as described above. Note that, as in the case of the recess 10, an uneven pattern having a depth of 3 to 20 μm may be formed on the protrusion 11 formed between the recesses 10 and 10.

Next, a mold for molding the automobile interior part 1 of the present invention will be described with reference to FIG.
A molding die 2 for an automobile interior product 1 according to the present invention is generally for molding a car interior product 1 composed of a single layer by injection-filling a molding material into a cavity 20. It has a cavity surface 20 a that can form a plurality of irregularities 10 and 11 on the surface of the interior product 1 that repeatedly feels a feeling of pressure and a release when it is boiled. The cavity surface 20a is provided with a plurality of protrusions 21 that can form a plurality of conical recesses 10 having a diameter of 5 to 20 mm and a depth of 50 to 300 μm on the surface of the interior product 1.

  As described above, the interior part 1 of the automobile has a plurality of irregularities 10 and 11 formed on the surface thereof. In the embodiment described above, the irregularities 10 and 11 are constituted by the concave portion 10 and the convex portion 11 between the concave portions 10 and 10 adjacent to each other. Therefore, as shown by a chain line in FIG. 2, a protrusion 21 is formed on the cavity surface 20 a of the mold 2 for molding the interior product 1 corresponding to the recess 10 on the surface of the interior product 1. . That is, when the conical recess 10 having a diameter of 5 to 20 mm and a depth of 50 to 300 μm is formed on the surface of the interior product 1, the base end has a diameter of 5 to 20 mm corresponding to the recess 10. A plurality of conical protrusions 21 having a height of 50 to 300 μm (when ignoring shrinkage accompanying solidification of the interior product 1) are formed on the cavity surface 20a of the mold. And this protrusion 21 is arranged according to the arrangement | sequence of the recessed part 10 by the space | interval according to the distance C between the recessed parts 10 and 10 in which the interior goods 1 were set. In addition, as described above, when a concavo-convex pattern such as a textured texture is formed in at least the concave portion 10 on the surface of the interior product 1, at least a protrusion on the cavity surface 20a according to the shape and depth of the concavo-convex pattern. An uneven pattern forming portion is formed on the surface of 21 (not shown).

  Next, the manufacturing method of the interior part 1 of the automobile according to the present invention will be described by using the mold 2 configured as described above to manufacture the interior part 1 having the unevennesses 10 and 11 as described above. . In addition, about the matter already demonstrated in the said embodiment, description by the invention which concerns on this manufacturing method is abbreviate | omitted.

  The method for manufacturing an interior product of an automobile according to the present invention is generally for producing an interior product 1 of a vehicle that is in contact with a person, and when a person strokes the surface of the interior product 1, a feeling of pressure and a feeling of release. By preparing a molding die 2 having a cavity surface 20a that can form a plurality of irregularities 10 and 11 on the surface of the interior article 1 in advance, and injection-molding a molding material into the cavity 20 of the molding die 2 The interior product 1 consisting of a single layer is formed.

  In manufacturing the interior part 1 of the automobile, the configuration of the mold 2 prepared in advance is as described above. The mold 2 is closed to form a cavity 20 therein, a predetermined molding material is heated and melted to a predetermined temperature, and a predetermined amount is injected and filled into the cavity 20 with a predetermined pressure or the like. Hold the pressure, cool and solidify. The molded interior product 1 has a Rockwell hardness (M and R scale) of about 50 to 120, for example, and is relatively hard. When the conical projection 21 is formed on the cavity surface 20a of the mold 2 with a base end diameter of 5 to 20 mm and a height of 50 to 300 μm, the surface of the molded interior part 1 The conical recess 10 having a diameter of 5 to 20 mm and a depth of 50 to 300 μm is formed. Further, when forming a concavo-convex pattern on the surface of the interior article 1 such as a textured texture that forms an arbitrary design simulating leather, a concavo-convex pattern is formed at a depth of 3 to 20 μm on at least the surface of the concave portion 10. Is done.

  When the surface of the interior product 1 molded in this way comes into contact with a person so that the person can stroke it, in the concave portion 10, the contacted portion such as the finger F is released by the concave portion 10 and pressed by the convex portion 11. Get a feel. This feeling of release and pressure can be realized by forming a conical recess 10 having a diameter of 5 to 20 mm and a depth of 50 to 300 μm. By alternately realizing the feeling of release and the feeling of pressure, the person who comes into contact with the interior product 1 has the illusion that it is soft even though the interior product 1 is composed of a single layer of a hard material. In addition, even when a concavo-convex pattern such as a textured texture is formed on the surface of the interior product 1, by forming the concavo-convex pattern with a depth of 3 to 20 μm at least on the surface of the recess 10, It does not interfere with the contact person feeling soft. And in the method of this invention, since it shape | molds with the shaping | molding die 2 with a single layer, the interior goods 1 which feels soft can be easily carried out with few processes compared with the conventional technique which laminates | stacks a base material and a skin material. And it can manufacture reliably.

  The present invention molds interior parts that are in contact with people, such as instrument panels and console boxes for automobiles, door trims, handles such as assist grips for supporting the body during travel, and handles such as steering wheels. The present invention can be applied to a molding die for manufacturing and a method for manufacturing these interior parts. In addition, the material of the interior part is particularly limited as long as it has the required function and the Rockwell hardness (M and R scale) after molding is about 50 to 120. There is no.

  DESCRIPTION OF SYMBOLS 1: Interior goods, 2: Mold, 10: Concave part, 11: Convex part, 20: Cavity, 20a: Cavity surface, 21: Protrusion, A: Diameter which the recessed part shape | molded in the cone shape opens, B: Concave part Depth of

Claims (5)

It consists of a single layer and has multiple irregularities on the surface.
A plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm are formed on the surface of the unevenness,
An automobile interior product, wherein an uneven pattern having a depth of 3 to 20 μm is formed at least on the surface of the recess. A molding die for molding a single-layer automobile interior by injection-filling a molding material into a cavity,
And have a cavity surface capable of forming a plurality of irregularities on the surface of the interior trim,
Molding of automobile interior parts, wherein the cavity surface is formed with protrusions capable of forming a plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm on the surface of the interior parts. Type. 3. The mold for an automobile interior part according to claim 2 , wherein at least the protrusions on the cavity surface are formed so as to form a concavo-convex pattern at a depth of 3 to 20 μm. A method for manufacturing interior parts of a car that is in contact with a person,
Prepare a mold having a cavity surface in which protrusions capable of forming a plurality of conical recesses having a diameter of 5 to 20 mm and a depth of 50 to 300 μm are formed on the surface of the interior product,
A method for manufacturing an interior product of an automobile, comprising molding an interior product comprising a single layer by injection-filling a molding material into a cavity of the mold. 5. The method for manufacturing an interior product for an automobile according to claim 4 , wherein at least the protrusions on the surface of the cavity are formed so as to form a concavo-convex pattern with a depth of 3 to 20 [mu] m.

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