WO2017168568A1

WO2017168568A1 - Automobile interior component and production method for same

Info

Publication number: WO2017168568A1
Application number: PCT/JP2016/060150
Authority: WO
Inventors: 誠田村谷; 佐々木　圭; 大野　樹史; 有輝熊澤
Original assignee: 河西工業株式会社
Priority date: 2016-03-29
Filing date: 2016-03-29
Publication date: 2017-10-05
Also published as: JPWO2017168568A1; JP6425366B2

Abstract

The purpose of the present invention is to provide an automobile interior component and a production method for the interior component with which it is easy to process a cover end part at a butted section, and possible to improve appearances and reduce costs. The automobile interior component, such as a sun visor 11 in which cores 16, 16, each comprising a resin molded body with an outer surface covered by a cover 17, are butted together to form a main body 13, has a structure comprising: a cross-sectional V-shaped groove 19 formed at a site on edge parts 16a of the cores 16 that oppose the end parts 17A of the covers 17; and the covers 17 formed simultaneously with the cores 16 during core 16 formation, wherein a respective end surface 17a of each end part 17A is provided so as to substantially follow a line 20 that extends from a respective inclined surface 18b of the V-shaped groove 19 toward the outside.

Description

Interior parts for automobiles and manufacturing method thereof

The present invention relates to an automotive interior part and a method for manufacturing the same.

Conventionally, as interior parts for automobiles, sun visors that block sunlight from the front or side of the driver's or passenger's seats are provided at the ceiling of the passenger compartment of the automobile.

In addition, in consideration of the ease of assembly and weight reduction, for example, a sun visor today forms a sun visor body by joining and fixing two halves made of a resin molded body, as is known, for example, in Patent Document 1. There is something like that.

7 and 8 show an example of a conventionally known sun visor in which two halves are joined and fixed to form a sun visor body. In FIG. 8, a sun visor 101 constitutes a sun visor main body 103 by abutting and fixing

halves

102A and 102B made of a resin molded body to each other as shown in FIG. Then, an L-shaped rotation shaft 104 is supported on the inner surface side of one half 102A by a bearing holder (not shown), and the sun visor body 103 is rotatably attached to the rotation shaft 104. ing. In the figure, reference numeral 105 denotes a mirror unit called a vanity mirror used by a passenger to check makeup or appearance in the vehicle.

Further, the

halves

102A and 102B are formed by molding a resin material alone into a predetermined shape by injection molding or the like as shown in FIG. 9, or predetermined by a resin material by injection molding or the like as shown in FIG. In some cases, the

cores

106A and 106B having shapes are formed, and the outer surfaces of the

cores

106A and 106B are encapsulated by the skin 107, respectively. 9 and 10 show enlarged views of a portion corresponding to the enlarged cross section of the E portion in FIG.

By the way, in the case where the

halves

102A and 102B are formed by only the resin material as in the sun visor main body 103 shown in FIG. , 108 is generated, and this is seen from the inside of the vehicle and has a problem of poor appearance. Therefore, today, as shown in FIG. 10, the outer surfaces of the

cores

106A and 106B are encapsulated by the skin 107, and the corners are rounded by the skin 107 and have a high-class feeling. The sun visor which adopts 103 is the mainstream.

Although the

halves

102A and 102B in the sun visor main body 103 shown in FIG. 10 are not shown, the outer surfaces of the

cores

106A and 106B are respectively encapsulated by the skin 107 after the

cores

106A and 106B are molded by a molding die. It becomes the composition which becomes. In addition, the

halves

102A and 102B in which the skin 107 and the

cores

106A and 106B are integrated in this way are the terminal portions of the skin 107 from the

peripheral portions

109b and 109b of the

cores

106A and 106B in the halves 102A and 102B. 206 is formed in an extended state.

As the processing of the terminal portion 206, as shown in FIG. 10, the surplus portion 206a of the terminal portion 206 extending from the peripheral portion 109b of the

cores

106A and 106B of the

halves

102A and 102B is wound around the end face 109a. Further, the surplus portion 206a is attached to the inner surfaces of the

cores

106A and 106B for processing. Thereafter, the end faces 109a and 109a of the

cores

106A and 106B are butted against each other through the terminal portion 206, and the core 106A and the core 106B are fixed by means not shown to form the sun visor body 103. Etc.

As another processing method, for example, as shown in FIG. 11 (a), an excess portion 206a of the terminal portion 206 extending from the peripheral portion 109b of the

cores

106A and 106B of the

halves

102A and 102B, Cut at the same position as the end face 109a to be the butted surface and removed as shown in FIG. Thereafter, there is a method in which the butted end faces 109a and 109a of the

cores

106A and 106B are butted together, and the core 106A and the core 106B are fixed by means not shown to form the sun visor body 103.

JP 7-285337 A

However, as shown in FIG. 10, the surplus portions 206a of the terminal portions 206 extending from the

peripheral portions

109b and 109b of the

cores

106A and 106B of the

halves

102A and 102B are replaced with the butted end surfaces 109a of the

cores

106A and 106B. , The process involving wrapping around the 109a side is complicated and cumbersome in the process of wrapping and processing the surplus portion 206a of the terminal unit 206, which also increases the work cost.

On the other hand, as shown in FIG. 11, the surplus portion 206a of the terminal portion 206 extending from the peripheral portion 109b of the

cores

106A and 106B of the

halves

102A and 102B is positioned at the same position as the butted end surface 109a of the

cores

106A and 106B. In each of the methods of cutting and processing, there is a problem that the cut end is visible from the outside and the appearance is deteriorated. In addition, there is a problem that shrink (shrinkage) occurs in the cut portion, the cut end portion is turned up, and the appearance is further deteriorated.

Accordingly, the present invention has been made in view of the above problems, and provides an interior part for an automobile and a method for manufacturing the same that can easily improve the appearance and reduce the cost of the processing of the skin terminal portion at the butted portion. The purpose is to do.

The present invention has been proposed in order to achieve the above object, and (1) the present invention forms a main body by butt-joining cores made of resin molded bodies whose outer surfaces are encapsulated by a skin. In the interior part for automobiles, the cross-sectional V-shaped groove formed at the peripheral edge portion of the core facing the terminal portion of the skin, and the end surface of the terminal portion are formed simultaneously with the core when the core is formed. There is provided an automotive interior part comprising: the skin substantially aligned with a line extending outward from the inner surface of the V-shaped groove.

(2) Provided is an interior part for an automobile according to (1), wherein both inner surfaces of the V-shaped groove are formed in a plane having a predetermined angle from the V-shaped tip.

(3) The outer peripheral surface of the terminal portion in the epidermis is a first curved surface portion curved outward, and an end surface of the terminal portion curved inward continuously from one end side of the first curved surface portion. The interior part for automobiles according to (1) or (2) having a second curved surface portion communicating therewith is provided.

(4) The interior part for an automobile according to (3), wherein the distance from the outer edge of the end surface to the outer peripheral end of the first curved surface portion in the terminal portion is smaller than the thickness of the skin.

(5) An automobile interior part according to any one of (1) to (4), wherein the core is a sun visor core and the skin is a sun visor skin.

(6) The present invention relates to a manufacturing method of an interior part for an automobile, in which a core part is formed by abutting and joining cores made of a resin molded body whose outer surface is encapsulated by a skin. A forming step of forming an inclined surface that expands from the inside to the outside at a portion facing the terminal portion of the skin and molding the core simultaneously with the skin, and a terminal in the skin extending from the inclined surface And a terminal portion cutting step of cutting the surplus portion of the portion substantially in line with lines extending outward from the inclined surface.

(7) The molding step includes a molding die that forms a cavity with a molding lower mold and a molding upper mold, and after arranging the skin on the molding lower mold, between the molding lower mold and the skin A method of manufacturing an automobile interior part according to (6) is provided, in which a resin material is injected into the cavity toward the surface to form the core encapsulated by the skin.

(8) The method for manufacturing an automotive interior part according to (6) or (7), wherein the core is a sun visor core and the skin is a sun visor skin.

According to the present invention, it is possible to improve the appearance at the abutting portion, and it is easy to process the skin terminal portion at the abutting portion, thereby reducing the cost.

1 is a front view of an automotive sun visor to which an embodiment of an automotive interior part of the present invention is applied. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a figure for demonstrating in detail the structure in the part corresponded to the B section of FIG. It is a figure explaining cutting of the surplus part of the terminal part in an epidermis. It is a figure explaining the shaping | molding die structure and shaping | molding procedure which shape | mold the half part of a vehicle sun visor same as the above, (a) is a figure which shows the mold open state before a shaping | molding start, (b) is the mold clamping state at the time of resin injection molding (C) is a figure which shows the mold open state after completion | finish of shaping | molding. It is the C section enlarged view of FIG. It is a front view of the sun visor for cars shown as an example of the conventional interior parts for cars. It is DD sectional drawing in FIG. It is a figure for demonstrating an example of the structure in the part corresponded to the E section of FIG. It is a figure for demonstrating the other example of the structure in the part corresponded to the E section of FIG. It is a figure for demonstrating an example of the processing method of the terminal part of the skin in the conventional sun visor for motor vehicles, (a) is the figure in the middle of cutting the surplus part, (b) is the figure after cutting the surplus part It is.

Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.

FIG. 1 and FIG. 2 are diagrams showing an embodiment of an automobile interior part of the present invention, and specifically show an automobile sun visor. Therefore, FIG. 1 is a front view of the automobile sun visor, and FIG. 2 is a cross-sectional view taken along the line AA in FIG.

1 and 2, the sun visor 11 comprises a sun visor main body 13 as a main body part by abutting and joining

halves

12A and 12B made of a resin molded body. Then, an L-shaped rotation shaft 14 is supported on the inner surface side of the half member 12A on one side by a bearing holder (not shown), and the sun visor body 13 is rotatably supported on the rotation shaft 14. It has become. In the figure, reference numeral 15 denotes a mirror unit used by an occupant for checking makeup or appearance in the vehicle, that is, a vanity mirror.

Each of the

halves

12A and 12B constituting the sun visor body 13 is formed by forming a synthetic resin material into a shell shape by injection molding, and a sun visor core 16 (hereinafter simply referred to as “core 16”) as a resin molded body. And an outer skin 17 encapsulating the outer surface of the core 16. Further, the skin 17 of each of the

halves

12A and 12B is integrated with the core 16 by being placed in a molding die and molded simultaneously with each core 16 when the respective cores 16 are resin-molded. It is arranged in a state of being encapsulated on the surface of the core 16. The core 16 is preferably a foam molded body that is lightweight and has an appropriate shape retention, such as a PP bead foam molded body, a PE bead foam molded body, a PS bead foam molded body, a polyurethane foam molded body, and the like. , TPO resin, PVC resin or the like. On the other hand, the skin 17 is made of a laminated sheet material or PPF resin in which a cushioning material such as polyurethane foam is lined on the back of the cloth in consideration of touch feeling, decorativeness, and the like.

Further, as shown in FIG. 3, the core 16 is formed as a sun visor main body 13 by abutting the end surfaces 18 to each other and fixing between the

halves

12A and 12B by means not shown. The end surface 18 is formed with a horizontal surface 18a and an inclined surface 18b that extends from the inner side to the outer side at an angle θ continuously from the outer peripheral end of the horizontal surface 18a. Each core 16 is abutted between the horizontal surface 18a and the horizontal surface 18a, and a groove having a V-shaped cross section between the

inclined surfaces

18b and 18b, that is, a cross-sectional V-shaped groove 19 (hereinafter simply referred to as “V”). Is formed). The V-shaped groove 19 is formed over substantially the entire circumference of the sun visor body 13 in this embodiment.

On the other hand, the skin 17 that is integrated with each core 16 and encapsulates the outer surface of each core 16 at the time of resin molding of each core 16 has a terminal portion 17A on the peripheral edge portion 16a of each core 16. Has been placed. Further, as shown in FIG. 4, the terminal portion 17 </ b> A is formed with a surplus portion 17 </ b> B extending from the inclined surface 18 b into the V-shaped groove 19 with a margin. After the molding, the surplus portion 17B is cut by a cutter 26 or the like substantially in line with the inner surface of the V-shaped groove 19, that is, the line 20 extending outward from the inclined surface 18b as shown in FIG. Therefore, after cutting, the end surface 17a of the terminal portion 17A is arranged in a state of being continuous with the inclined surface 18b as shown in FIG. The inclined surface 18b (inner surface) of the V-shaped groove 19 is a flat surface. That is, both inner surfaces (inclined surfaces 18b) of the V-shaped groove 19 are formed as flat surfaces having a predetermined angle θ from the front end (V-shaped front end) of the V-shaped groove 19. Then, when cutting the surplus portion 17B in the terminal portion 17A, cutting is performed by aligning the cutter 26 or the like with the flat surface (inclined surface 18b) so that the cut variation in the terminal portion 17A is reduced.

Further, as shown in FIG. 3, the terminal portion 17A of the outer skin 17 enclosing the peripheral edge portion 16a of each core 16 has a first curved surface portion 21a whose outer peripheral surface is curved outward, and its first A second curved surface portion 21b that is continuously curved inward from one end side of the first curved surface portion 21a and communicates with the end surface 17a of the terminal portion 17A is provided. The reason why the first curved surface portion 21a and the second curved surface portion 21b are provided is that, when a cut variation occurs in the terminal portion 17A of the skin 17 and a skin residue occurs, the skin remaining is the second curved surface portion. This is because the edge feeling is eliminated so as not to be applied to the first curved surface portion 21a that is formed on the outermost surface 21b. That is, the remaining skin is prevented from appearing outside the first curved surface portion 21a, and the remaining skin is hidden from the outside to improve the appearance. Further, by preventing the remaining skin from covering the outermost first curved surface portion 21a, the edge feeling is eliminated and the tactile feeling is improved.

In this embodiment, an example of the main dimensions of each part will be described with reference to FIG. 3. The inclination θ of the inclined surface 18b of each core 16 is about 20 ° with respect to the reference line S passing through the tip of the V-shaped groove 19. The length N of the surface 18b is about 0.1 mm or larger and 3.0 mm or smaller, that is, (0.1 mm ≦ N ≦ 3.0 mm).

As described above, the sun visor 11 of this embodiment is manufactured through the molding step (I) and the terminal portion cutting step (II). In the molding step (I), an inclined surface 18b that spreads from the inner side toward the outer side at a predetermined angle θ is provided at a portion of the peripheral edge portion 16a of the core 16 that faces the terminal portion 17A of the outer skin 17 so that the core 16 is covered with the outer skin. In the terminal section cutting step (II), an excessive portion 17B of the terminal portion 17A extending from the inclined surface 18b of the core 16 into the V-shaped groove 19 is extended outward from the inclined surface 18b. Cutting is performed almost in line with the line 20 to be cut.

5 and 6 show an example of the molding die 22 used in the molding step (I). Next, the configuration of the molding die 22 and the molding method will be described with reference to FIGS. 5 and 6, the molding die 22 includes a molding lower mold 23 and a molding upper mold 24. When molding, first, the skin 17 is set on the molding lower mold 23 in a state where the molding upper mold 24 is released from the molding lower mold 23 as shown in FIG.

Next, the upper mold 24 is clamped on the lower mold 23. By this clamping, a cavity 25 is formed between the molding lower mold 23 and the molding upper mold 24. Subsequently, a resin material is injected into the cavity 25 through a liner gate (not shown) provided in the lower molding die 23, and the skin 17 is pressed against the inner surface of the molding upper die 24 with this injection pressure, so that the core 16 and the skin 17 are described above. The core 16 made of a resin molded body whose shape, that is, the outer surface is encapsulated by the skin 17 is molded. In this state, the surplus portion 17B of the skin 17 remains attached.

When the molding is finished, the space between the molding lower mold 23 and the molding upper mold 24 is opened, and the core 16 arranged on the molding lower mold 23, that is, the core 16 whose outer surface is encapsulated by the skin 17 is taken out. Thereby, the work of the molding step (I) is completed. In the molding in this embodiment, as shown in FIG. 6, the distance M from the outer edge of the end surface 17a of the terminal portion 17A of the skin 17 to the outer peripheral end of the first curved surface portion 21a is the thickness t of the skin 17 The inner surface of the molding upper mold 24 does not interfere with the molding lower mold 23 when the gap between the molding lower mold 23 and the molding upper mold 24 is opened. Molding can be performed without a cavity slide in which a part of the mold 24 or the like is slid in an inclined direction. Therefore, the molding die 22 can be easily manufactured and the cost can be reduced.

Also, when the work of the molding process (I) is completed, the process proceeds to the terminal section cutting process (II). In the terminal portion cutting step (II), as shown in FIG. 4, the surplus portion 17B of the terminal portion 17A extending from the inclined surface 18b of the core 16 (the inner surface of the V-shaped groove 19) is moved outward from the inclined surface 18b. It is removed by cutting almost in line with the line 20 extending toward the end. As a result, the end surface 17a of the terminal portion 17A of the skin 17 is in a state of being substantially aligned with the line 20 extending outward from the inclined surface 18b (the inner surface of the V-shaped groove 19). Then, halves 12A and 12B are formed. In addition, the mirror unit 15 is attached to the half body 12B as necessary.

When the

halves

12A and 12B are formed in this way, an L-shaped rotation shaft 14 is attached to the inner surface side of one half 12A with a bearing holder (not shown), and the

halves

12A and 12B are further attached. The horizontal planes 18a and the horizontal planes 18a of the cores 16A and 16B are respectively butted and fixed. Thereby, the sun visor 11 having the sun visor body 13 provided with the V-shaped groove 19 between the

inclined surfaces

18b and 18b is formed.

Therefore, according to the sun visor 11 as the automotive interior part formed in this way, the core 16 is formed of a resin molded body in which the skin 17 is molded simultaneously with the molding of the core 16 and the outer surface is encapsulated by the skin 17. Therefore, the core 16 and the skin 17 are more integrated, and the core 16 and the skin 17 can be prevented from being peeled off.

In addition, after molding, the excess portion 17B of the terminal portion 17A in the skin 17 is cut in accordance with the line 20 extending outward from the inner surface (inclined surface 18b) of the V-shaped groove 19, so that the terminal in the skin 17 Finished flush with the end surface 17a of the portion 17A and the inner surface (inclined surface 18b) of the V-shaped groove 19 in the core 16, more integrated and beautifully finished.

Further, since the V-shaped groove 19 is provided in the outer periphery of the peripheral portion 16a of the core 16, that is, the mating portion (horizontal surface 18a), it is assumed that the cutting of the surplus portion 17B in the terminal portion 17A is uneven and the skin cut residue is made. However, the remaining skin cut is disposed in the V-shaped groove 19 and absorbed. As a result, the remaining skin cut does not protrude from the outer surface of the sun visor main body 13, so that the appearance and tactile sensation can be improved.

Further, since the inner surface (inclined surface 18b) of the V-shaped groove 19 in the core 16 is formed as a flat surface, when cutting the surplus portion 17B in the terminal portion 17A, the cutter 26 and the like are aligned with the flat surface (inclined surface 18b). When the cutting is performed, it is possible to stabilize the product by reducing the cut variation in the terminal portion 17A.

Further, the outer peripheral surface of the terminal portion 17A in the outer skin 17 includes a first curved surface portion 21a curved outward and a terminal portion 17A curved continuously inward from one end side of the first curved surface portion 21a. Since the second curved surface portion 21b that communicates with the end surface 17a is provided, even when a cut variation occurs in the terminal portion 17A of the skin 17 and a skin residue occurs, the skin residue remains in the second surface. It is made on the curved surface portion 21b. As a result, even if an epidermis residue occurs, the epidermis residue can be hidden from the outside so as not to cover the first curved surface portion 21a positioned at the outermost part, so that the appearance can be improved. At the same time, the tactile sensation is also improved.

Further, since the distance M from the outer edge of the end surface 17a to the outer peripheral end of the first curved surface portion 21a in the terminal portion 17A is formed to be smaller than the thickness t of the skin 17, the lower molding die 23 and the upper molding die 24 are formed. When molding is performed by injecting and filling a resin material into the cavity 25 between them, molding is performed without a cavity slide in which a part of the molding upper mold 24 and the like is slid in an inclined direction in accordance with the mold opening / closing operation. Therefore, the mold structure can be simplified.

In the above embodiment, the sun visor 11 has been described as an example. However, the sun visor 11 is not limited to the sun visor 11 and can be widely applied to automobile interior parts such as doors, luggage, and trunks. That is, the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

11 Sun visor

12A Half body

12B Half body 13 Sun visor body (main part)
14 Rotating shaft 15 Mirror unit 16 Sun visor core 16a Core peripheral edge 17 Skin 17A End portion 17a End portion end surface 17B Excess portion 18 End surface 18a Horizontal surface 18b Inclined surface (inner surface forming V-shaped groove)
19 Cross section V-shaped groove 20 Line 21a extending outward from inclined surface First curved surface portion 21b Second curved surface portion 22 Molding die 23 Molding lower die 24 Molding upper die 25 Cavity 26 Cutter S Reference line L Distance M Distance t Skin thickness

Claims

In automotive interior parts formed by butt-joining cores consisting of resin molded bodies whose outer surfaces are encapsulated by the skin to form a main body part,
A cross-sectional V-shaped groove formed in a portion of the peripheral edge of the core facing the terminal portion of the epidermis;
The outer skin formed simultaneously with the core at the time of molding the core, the end surface of the end portion being arranged substantially in line with a line extending outward from the inner surface of the V-shaped groove,
An automotive interior part characterized by comprising:
2. The interior part for automobile according to claim 1, wherein both inner surfaces of the V-shaped groove are formed in a plane having a predetermined angle from the V-shaped tip.
The outer peripheral surface of the terminal portion in the outer skin is connected to the first curved surface portion curved outward and the second curved surface continuously leading from one end side of the first curved surface portion toward the inner side. The interior part for automobiles according to claim 1, further comprising: a curved surface part.
The automobile interior part according to claim 3, wherein a distance from an outer edge of the end surface of the terminal portion to an outer peripheral end of the first curved surface portion is formed to be smaller than a thickness of the skin.
The automotive interior part according to any one of claims 1 to 4, wherein the core is a sun visor core and the skin is a sun visor skin.
In the method of manufacturing an interior part for an automobile, in which a core part is formed by butting and joining cores made of a resin molded body whose outer surface is encapsulated by a skin,
A molding step for forming the core at the same time as the skin by providing an inclined surface that expands from the inside to the outside at a portion facing the terminal portion of the skin at the peripheral edge of the core;
A terminal cutting step of cutting the surplus portion of the terminal portion in the epidermis extending from the inclined surface in accordance with the lines extending outward from the inclined surface, respectively,
The manufacturing method of the interior component for motor vehicles characterized by comprising.
The molding step includes a molding die that forms a cavity with a molding lower mold and a molding upper mold, and after the skin is disposed on the molding lower mold, the molding process is performed between the molding lower mold and the skin. The method of manufacturing an automobile interior part according to claim 6, wherein a resin material is injected into the cavity to form the core encapsulated by the skin.
The method for manufacturing an interior part for an automobile according to claim 6 or 7, wherein the core is a sun visor core and the skin is a sun visor skin.