JP2977755B2 - Method of manufacturing vehicle sun visor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a sun visor for a vehicle in which the outer surface of a sun visor body formed hollow by blow molding of a thermoplastic synthetic resin is covered with an outer skin.

[0002]

2. Description of the Related Art Generally, when a hollow sun visor body having a front plate portion, a back plate portion and a peripheral wall portion is formed by blow molding of a thermoplastic synthetic resin, the strength becomes weak. For this reason, as shown in FIG. 9, conventionally, a crimping portion 108 is formed on the mold surfaces 103 of the pair of molding dies 102 integrally with the molding dies 102, and the crimping portions 108 divide the inside of the parison 111. The parison 111 is partially crimped, and the parison 111 is kept in this state as shown in FIG.
It is known to form a sun visor body 114 as shown in FIGS. 11 and 12 and to form a reinforcing rib 118 at the same time by air blowing as shown in FIG. A sun visor for a vehicle manufactured by such a manufacturing method is disclosed in, for example, Japanese Utility Model Laid-Open No. 58-18814.
The sun visor body 114 blow-molded as described above is covered with an outer skin 122 as shown in FIG. 12 in order to enhance the external design.

[0003]

By the way, when the sun visor body 114 is blow-molded by the above-described manufacturing method, the outer surfaces of the front plate portion 115 and the back plate portion 116 have recesses 110 at the portions of the reinforcing ribs 118. Is formed. Therefore, even when the sun visor body 114 is covered with the outer skin 122 to enhance the appearance design, there is a problem that the dent 110 deteriorates the touch. Further, the step of blow molding the sun visor body 114 and the step of forming the sun visor body 11
4 is covered with an outer skin 122.
There was also a problem of high cost.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a reinforcement for connecting the front plate portion and the back plate portion without forming recesses on the outer surfaces of the front plate portion and the back plate portion of the sun visor body. It is an object of the present invention to provide a method for manufacturing a sun visor for a vehicle, in which ribs can be formed, and the sun visor main body can be covered with an outer cover simultaneously with blow molding of the sun visor main body.

[0005]

According to a first aspect of the present invention, there is provided a method for manufacturing a sun visor for a vehicle, wherein an outer surface of a hollow sun visor body formed by blow molding is provided with an outer skin. A method of manufacturing a coated vehicle sun visor, comprising: disposing a required number of reinforcing cores on inner surfaces of two front and back sheet materials for constituting the exterior skin, respectively; After the sheet material is set on the mold surface side of the pair of molds in the mold open state, a parison of a thermoplastic synthetic resin is inserted between the sheet materials, and then the molds are clamped. By pressing the parison with the reinforcing cores of the two sheet materials based on the mold clamping operation, the inside of the parison is partially crimped, and the parison is partially crimped. To air blow the parison The the mold surface of both mold both sheet -
A sun visor body having a front plate portion, a back plate portion, and a peripheral wall portion which are in contact with each other while sandwiching the sun visor body therebetween. A reinforcing rib for connecting the front plate portion and the back plate portion is formed using a core as a core material.

According to a second aspect of the present invention, there is provided a method of manufacturing a vehicle sun visor according to the first aspect, wherein the plate is formed along at least one of the vertical and horizontal directions with respect to the sun visor body. A sheet material is used in which a required number of reinforcing cores having protruding pieces having a shape are arranged on the inner surface.

According to a third aspect of the present invention, there is provided a method for manufacturing a vehicle sun visor according to the first aspect, wherein one of the two sheet materials comprises:
The required number of reinforcing cores disposed on the inner surface thereof has a vertical projecting piece perpendicular to the longitudinal direction of the sun visor body, and the other sheet material has the required number of reinforcing members disposed on the inner surface thereof. Sheet materials are used, each of which has a laterally projecting piece whose reinforcing core is parallel to the longitudinal direction of the sun visor body and intersects with said projecting piece.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 to 6 show Embodiment 1 of the present invention.
It is explained according to. 1 and FIG.
The two front and back sheet materials 21 for constructing are made of a thermoplastic synthetic resin sheet, and the inner surfaces of these two sheet materials 21 have a required number (9 in FIG. 2) of reinforcement. The core bodies 23 are arranged vertically and horizontally. The reinforcing core 23 is attached to an inner surface of the sheet material 21 by an adhesive or welding.
And a vertically protruding piece 25 projecting perpendicularly from the mounting piece 24 and orthogonal to the longitudinal direction of the sun visor body 14.

As shown in FIG. 4 (A), the mounting piece 24 of the reinforcing core 23 may be lengthened in the lateral direction, and a plurality of protruding pieces 25 may be protruded from the mounting piece 24. Alternatively, as shown in FIG. 4B, the mounting piece 24 of the reinforcing core 23 may be lengthened in the vertical direction, and a plurality of protruding pieces 25 protruding from the mounting piece 24 may be used.

On the other hand, as shown in FIG. 3A, a pair of left and right forming dies 2 which are opened and closed by an opening / closing drive function (not shown) are arranged below a die head 1 for extruding the parison 11. The mold surfaces 3 of these two molds 2 are provided.
Thereby, the cavity 4 corresponding to the sun visor body 14 is formed. As shown in FIG.
In the state where the molds are opened, the two front and back sheet materials 21 are opposed to the mold surface 3 side of both the molding dies 2 with the reinforcing cores 23 arranged on the inner side surfaces facing each other. Are positioned and set by positioning and fixing means 5 such as pins and bolts.

Thereafter, a parison 11 of a thermoplastic synthetic resin is extruded from the die head 1, and the parison 11 is inserted between the two sheet materials 21 on the front and back sides of both the molds 2. Subsequently, as shown in FIG. 3B, both molds 2 are clamped. Then, the outer peripheral surface of the parison 11 is pressed by the reinforcing cores 23 of the both sheet materials 21 based on the clamping operation of the two forming dies 2, so that the inside of the parison 11 is partially pressed. .

Here, air is blown into the parison 11 by an air blowing port (not shown) and is blown. Then, as shown in FIG. 1, while pressing both sheet materials 21 along the mold surfaces 3 of both forming dies 2, the parison expands with these sheet materials 21 interposed therebetween, and the front plate portion 15, Back plate 16 and peripheral wall 17
Is formed to form a hollow sun visor body 14.
The outer surfaces of the front plate portion 15, the back plate portion 16 and the peripheral wall portion 17 of the sun visor main body 14 are tightly integrated with the inner side surfaces of the two sheet materials 21, and the sun visor is formed by the two sheet materials 21. An outer skin 22 covering the outer surface of the main body 14 is configured. Further, at the same time when the sun visor main body 14 is blow-molded, the front plate 15 and the back plate
Reinforcing ribs 18 are formed to join the reinforcing ribs 16.

Finally, the two molds 2 are opened, and the sun visor body 14 covered by the outer skin 22 is removed from these molds 2 and unnecessary portions of the peripheral portions of the sun visor body 14 and the outer skin 22 are removed. The sun visor main body 14 shown in FIGS. 5 and 6 is manufactured by removing 12 at the cut portion 13.
The notch 13 at the peripheral edge of the sun visor main body 14 and the outer skin 22 is formed by the cutting blade 9 formed at the peripheral edge of the mold surface 3 of both molds 2.

Therefore, in the first embodiment, since the sun visor body 14 can be blow-molded and the sun visor body 14 can be covered with the outer cover 22 at the same time, the sun visor body 14 formed by blow molding can be used. The work of covering with the outer skin 22 can be omitted. Further, the front plate portion 15 and the back plate portion 16 of the sun visor body 14 are provided.
Are not only satisfactorily enhanced by the reinforcement ribs 18, but also the surface plate portion 15 and the back plate portion 16 are not formed with dents. .

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIGS. In the second embodiment, of the two sheet materials 21 constituting the outer skin 22, one of the sheet materials 21 is provided with an inner surface as shown in FIG. In the same manner as in the first embodiment, the required number of reinforcing core members 23 having the projecting pieces 25 having a flat plate shape in the vertical direction perpendicular to the longitudinal direction of the sun visor body 14 are used, and the other sheet material is used. 21 has an inner surface
As shown in FIG. 8, a required number of reinforcing core members 23 having a protruding piece 25 a which is parallel to the longitudinal direction of the sun visor main body 14 and crosses the protruding piece 25 and has a flat plate shape in the lateral direction are provided. Things are used. In the second embodiment, except that the two front and back sheet materials 21 are used,
Through the same steps as in the first embodiment, the sun visor body 14 covered with the outer skin 22 is manufactured.

Therefore, in the second embodiment, even when the reinforcing cores 23 on the inner side surfaces of the sheet materials 21 are slightly displaced from each other, these reinforcing cores 23
Since the protruding pieces 25, 25a of the sun visor body 14 intersect with each other in a cross shape, the reinforcing plate
The reinforcing ribs 18 connecting the back plate 16 and the back plate 16 can be reliably formed.

[0017]

As described above, according to the present invention,
Reinforcing ribs for connecting the front plate portion and the back plate portion can be formed without forming depressions on the outer surfaces of the front plate portion and the back plate portion of the sun visor body. Since the sun visor main body can be covered with the outer skin at the same time as the molding, the deterioration of the touch due to the dent can be eliminated, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention, showing a state in which a molding die is clamped and a parison is air blown.

FIG. 2 is a perspective view showing a sheet material constituting the outer skin.

FIG. 3 is a cross-sectional view sequentially showing a process in which a parison in which a sheet material is set is inserted into both molds and then the mold is clamped.

FIG. 4 is an explanatory view showing an embodiment of a reinforcing core member.

FIG. 5 is a perspective view showing the sun visor body in a cutaway manner.

FIG. 6 is a sectional view of the sun visor main body based on the line VI-VI of FIG. 5;

FIG. 7 is a perspective view showing a sealing material used in Embodiment 2 of the present invention.

FIG. 8 is an explanatory view showing a part of two sheet materials in which protruding pieces of a reinforcing core intersect.

FIG. 9 is a cross-sectional view showing a state in which a parison is inserted between two conventional molds that are opened.

FIG. 10 is a cross-sectional view showing a state where both molds are clamped and a parison is air blown.

FIG. 11 is a perspective view showing a sun visor body formed by a conventional blow molding method.

FIG. 12 is a cross-sectional view showing a state in which the outer surface of the sun visor body is covered with an outer cover.

[Explanation of symbols]

 2 Mold 3 Mold surface 5 Positioning and fixing means 11 Parison 14 Sun visor body 15 Front plate 16 Back plate 17 Peripheral wall 18 Reinforcement rib 21 Sheet material 22 Exterior skin 23 Reinforcement core

Claims (3)

(57) [Claims] 1. A method for manufacturing a sun visor for a vehicle, wherein an outer surface of a sun visor body formed hollow by blow molding is covered with an outer skin, wherein a front and back two sheets for forming the outer skin are provided. -A required number of reinforcing cores are respectively disposed on the inner surface of the sheet material, and the sheet materials are set on a mold surface side of a pair of molding dies in an open state, and then the sheet materials are provided. A parison made of a thermoplastic synthetic resin is inserted between the molds. Thereafter, the molds are clamped, and the parison is pressed by the reinforcing cores of the sheet materials based on the mold clamping operation. The inside of the parison is partially press-bonded, and the parison is air-blown in a state where the parison is partially press-bonded. Top plate, back plate, and peripheral wall that are in contact with each other At the same time as forming the sun visor body provided, the reinforcing ribs for covering the sun visor body with the outer skin made of the both sheet materials and for connecting the front plate portion and the back plate portion with the reinforcing core as a core material. Forming a sun visor for a vehicle. 2. The method for manufacturing a sun visor for a vehicle according to claim 1, wherein a required number of reinforcing cores having a plate-shaped projecting piece along at least one of the vertical and horizontal directions with respect to the sun visor body are provided. A method for manufacturing a sun visor for a vehicle, comprising using a sheet material disposed on a side surface. 3. The method for manufacturing a sun visor for a vehicle according to claim 1, wherein one of the two sheet materials has a required number of reinforcing cores disposed on an inner surface thereof. The other sheet material has a vertical projecting piece orthogonal to the longitudinal direction of the sun visor body, and the required number of reinforcing cores disposed on the inner surface thereof are parallel to the longitudinal direction of the sun visor body and the projecting pieces A method for manufacturing a sun visor for a vehicle, wherein a sheet material having a laterally projecting piece intersecting with the piece is used.