JPH09300960A - Vehicular sunvisor and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add a soft feeling while enhancing the ridigity of a sunvisor main body, by approximately oppositely projecting reinforcing ribs on the inner surfaces of the front plate and the back plate of the sunvisor main body hollowly formed of a thermoplastic synthetic resin material, and arranging a predetermined clearance between the projected parts of these reinforcing ribs. SOLUTION: A sunvisor main body 1 is hollowly formed by the blow forming of a thermoplastic synthetic resin, and integrally equipped with a front plate 2, a back plate 3 and a circumferential wall 4, and a bearing member opposed to a spindle is arranged in a desired position. Then, reinforcing ribs 6, 7 are respectively oppositely projected on relative inner surfaces of the front plate 2 and the back plate 3 of the sunvi.sor main body 1. At this time, a predetermined clearance 8 is arranged between the projected parts of the reinforcing rib 6 of the front plate 2 and the reinforcing rib 7 of the back plate 3. The reinforcing ribs 6, 7 are thusly arranged, thereby the rigidity of the sunvisor main body 1 can be enhanced, and also the front plate 2 and the back plate 3 can deflected by a part corresponding to the predetermined clearance 8, so that enough soft feeling can be given to the sunvisor main body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle sun visor and a method for manufacturing the same.

[0002]

2. Description of the Related Art Since a sun visor body formed by blow molding a thermoplastic synthetic resin material in the hollow has insufficient rigidity, as shown in FIGS.
The reinforcing ribs 1 are provided on the inner surfaces of the front plate portion 102 and the back plate portion 103 of FIG.
06 and 107 are provided in a protruding manner to face each other, and these reinforcing ribs 10
The sun visor body 1 is formed by integrally joining the projecting portions of 6,107.
It is known to increase the rigidity of 01. In addition, a sun visor having such a structure is disclosed, for example, in Japanese Utility Model Publication 58-1.
8814.

[0003]

By the way, FIG. 9 and FIG.
In the conventional sun visor body 101 shown in FIG. 0, in the structure in which the projecting portions of the reinforcing ribs 106 and 107 projecting oppositely are integrally joined to the inner surfaces of the front plate portion 102 and the back plate portion 103, Although the rigidity of the sun visor body 101 is sufficiently enhanced, there is a problem that the soft feeling (flexibility) required for the sun visor body 101 is impaired.
In view of the above conventional problems, an object of the present invention is to provide a vehicle sun visor capable of imparting a soft feeling while increasing the rigidity of the sun visor body, and a method for manufacturing the same.

[0004]

In order to achieve the above object, the vehicle sun visor according to the invention of claim 1 is such that a sun visor main body formed hollow by a thermoplastic synthetic resin material has a front plate portion Reinforcing ribs are provided on the inner surface of the back plate so as to substantially face each other, and a predetermined gap is provided between the protruding portions of the reinforcing ribs. Therefore, the rigidity of the sun visor body is increased by the reinforcing ribs that are provided so as to project substantially in the inner surfaces of the front plate portion and the back plate portion, and the front plate portion and the back plate portion are projected on these inner surfaces. Further, the sun visor body can be easily bent by an amount corresponding to a predetermined gap between the projecting portions of the reinforcing ribs, thereby giving the sun visor body a soft feeling.

A method for manufacturing a vehicle sun visor according to a second aspect of the present invention is a method for manufacturing the vehicle sun visor according to the first aspect, wherein both of the molding dies are opened in a state where the pair of molding dies are opened. The thermoplastic synthetic resin material is inserted between the molding dies and the mold is clamped, and then the thermoplastic synthetic resin material is air blown to mold the hollow sun visor body, and at the same time, it is projected on the mold surfaces of both the molding dies. Reinforcing ribs are provided on the inner surfaces of the front plate and the back plate of the sun visor body by the protrusions so as to be substantially opposed to each other with a predetermined gap. Therefore, the reinforcing ribs can be formed with a predetermined gap at the same time as the blow molding of the sun visor body, and the manufacturing cost can be reduced.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 and 2 show Embodiment 1 of the present invention.
Follow the instructions below. 1 and 2, the sun visor body 1 is formed in a hollow shape by blow molding of thermoplastic synthetic resin, and integrally includes a front plate portion 2, a back plate portion 3, and a peripheral wall portion 4. A bearing member 5 corresponding to a support shaft (not shown) is internally provided at a required position of the sun visor body 1. The sun visor body 1 is covered with an outer skin (not shown). A predetermined number of reinforcing ribs 6 and 7 are provided so as to be opposed to each other on inner surfaces of the front plate portion 2 and the back plate portion 3 of the sun visor body 1 which face each other. A predetermined gap 8 is provided between the protruding portions of the reinforcing rib 6 of the front plate portion 2 and the reinforcing rib 7 of the back plate portion 3.

The vehicle sun visor of the first embodiment is constructed as described above. Therefore, the sun visor body 1 is increased in rigidity by the reinforcing ribs 6 and 7 of the front plate portion 2 and the back plate portion 3, and the front plate portion 2 and the back plate portion 3 are also increased.
Is easily bent by an amount corresponding to a predetermined gap 8 provided between the protruding portions of the reinforcing ribs 6 and 7, whereby the sun visor body 1 can be provided with the required softness.

Next, a method of manufacturing the vehicle sun visor of the first embodiment will be described with reference to FIGS. 3 and 4. FIG.
In the above, under the die head 12 for extruding the thermoplastic synthetic resin material (hereinafter referred to as a parison) 11, a pair of molding dies 12, 13 are disposed so as to be able to open and close the dies. The pair of molding dies 12, 13 includes molding surfaces 14 for forming a cavity corresponding to the sun visor body 1.
15 are formed, and the required number of protrusions 1 for forming the reinforcing ribs 6 and 7 are formed on the respective molding surfaces 14 and 15.
6 and 17 are provided so as to face each other. Then, as shown in FIG. 3, the parison 11 is extruded from the die head 12 with the pair of molding dies 12, 13 opened, and the parison 11 is placed between the pair of molding dies 12, 13. Is inserted.

Thereafter, as shown in FIG. 4, a pair of molding dies 1
2, 13 are mold-clamped, and air is blown into the parison 11 by air blowing (not shown), and the parison 11 is blown with air. The sun visor body 1 is molded. At the same time that the sun visor body 1 is molded, the outer surfaces of the front plate portion 2 and the back plate portion 3 are formed by the protrusions 16 and 17 of the molding surfaces 14 and 15 of the pair of molding dies 12 and 13, respectively. The reinforcing ribs 6 and 7 are projected in the inner surfaces of the front plate portion 2 and the back plate portion 3 so as to face each other.

With the pair of molding dies 12, 13 clamped, the molding surface 1 of the molding dies 12, 13 is closed.
The distance between the tips of the protrusions 16 and 17 projecting oppositely to the protrusions 4 and 15 is larger than the sum of the thicknesses of the reinforcing ribs 6 and 7 by a predetermined amount. It is set to the dimension L, whereby each reinforcing rib 6,
A required gap 8 is provided between the protruding ends of 7. In this way, the sun visor body 1 is blow-molded, and at the same time, the reinforcing ribs 6, 7 are formed on the inner surfaces of the front plate portion 2 and the back plate portion 3.
Can be easily molded.

Finally, the pair of molding dies 12, 13 are opened, the sun visor body 1 is demolded from the molding dies 12, 13 and the unnecessary portion 9 of the peripheral portion of the sun visor body 1 is cut at the cut portion 10. By removing, the sun visor body 1 shown in FIGS. 1 and 2 is manufactured. The cut portion 10 at the peripheral edge of the sun visor body 1 is formed by a cut blade 19 formed at the peripheral edge of the molding surface 15 of the one molding die 13. The sun visor body 1 is covered with an exterior skin, and a spindle is fitted into the bearing member 5 of the sun visor body 1 to obtain a vehicle sun visor.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. Embodiment 2
5, as shown in FIG. 5, one of the reinforcing ribs 6 and 7 projecting from the inner surfaces of the front plate 2 and the back plate 3 of the hollow sun visor body 1 so as to face each other. 6 is provided in the shape of a double cylinder, and the other reinforcing rib 7 is provided so as to project toward the center of the one reinforcing rib 6. Further, the protruding ends of the reinforcing ribs 6 and 7 are formed in a pointed shape, and a predetermined gap 8 is provided between the protruding portions of the reinforcing ribs 6 and 7. Since the other parts are configured in substantially the same manner as in the first embodiment, the description thereof will be omitted.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. 6. In the third embodiment, a front plate portion 2 and a back plate portion 3 of a hollow sun visor body 1 are described. Of the reinforcing ribs 6 and 7 projecting from the inner surfaces of and in a substantially opposed shape, the reinforcing rib 6 formed in a double cylindrical shape,
Respective projecting ends of the reinforcing ribs 7 projecting toward the center are formed flat, and a predetermined gap 8 is provided between the projecting portions of the reinforcing ribs 6 and 7. Since the other parts are formed in substantially the same manner as in the first embodiment, the description thereof will be omitted.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG. 7. In the fourth embodiment, a front plate portion 2 and a back plate portion 3 of a hollow sun visor body 1 are described. Of the reinforcing ribs 6 and 7 projecting from the inner surfaces of and in a substantially opposed shape, the protruding end of one of the reinforcing ribs 6 formed in a double cylindrical shape is formed flat, and at the center of the reinforcing rib 6. The protruding end of the other reinforcing rib 7 protruding toward the other is formed in a pointed shape, and a predetermined gap 8 is provided between the protruding portions of the reinforcing ribs 6 and 7. Since the other parts are configured in substantially the same manner as in the first embodiment, the description thereof will be omitted.

The sun visor body 1 according to the second to fourth embodiments
In order to prevent the protruding portions of the reinforcing ribs 6 and 7 of the front plate portion 2 and the back plate portion 3 from being accidentally coupled during blow molding, for example, as shown in FIG. It is desirable to assemble the protrusion 17 for forming the reinforcing rib 7 so as to be able to move forward and backward with respect to the molding surface 15 of the molding die 13. Then, during the removal of the air blow of the sun visor body 1, the protrusion 17 is moved forward by the drive plate 21 toward the protrusion 16 provided on the molding surface 14 of the other mold 12, so that the sun visor body 1 is blown. At the same time as the molding, the reinforcing ribs 6 and 7 are formed on the front plate portion 2 and the back plate portion 3 to form the required gap 8
Can be protruded in an opposed manner with a space between them.

[0016]

As described above, according to the present invention,
By providing reinforcing ribs on the front plate and the back plate of the sun visor body that are hollowed out of a thermoplastic synthetic resin material so as to be opposed to each other, the rigidity of the sun visor body can be increased and the reinforcement ribs The front plate portion and the back plate portion are easily bent in a predetermined gap provided between the projecting portions, so that the soft feeling required for the sun visor body can be imparted.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sun visor body according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an explanatory view showing a blow molding device of the sun visor body.

FIG. 4 is an explanatory view showing a state where the pair of molding dies are clamped and the sun visor body is blow-molded.

FIG. 5 is a sectional view showing a main part of a sun visor body according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing a main part of a sun visor body according to a third embodiment of the present invention.

FIG. 7 is a sectional view showing a main part of a sun visor body according to a fourth embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a blow molding device for the sun visor body according to the second to fourth embodiments.

FIG. 9 is a perspective view showing a conventional sun visor body.

FIG. 10 is a sectional view based on the line XX of FIG. 9;

[Explanation of symbols]

 1 sun visor main body 2 front plate part 3 back plate part 4 peripheral wall part 6, 7 reinforcing rib 8 predetermined gap 11 parison (thermoplastic synthetic resin material) 12, 13 molding die 14, 15 molding surface 16, 17 protrusion

Claims (2)

[Claims] 1. A sun visor body, which is hollow and made of a thermoplastic synthetic resin material, is provided with reinforcing ribs on the inner surfaces of a front plate portion and a back plate portion so as to substantially face each other. A vehicle sun visor characterized in that a predetermined gap is provided between the two. 2. A method for manufacturing a vehicle sun visor according to claim 1, wherein a thermoplastic synthetic resin material is inserted between a pair of molds in a state where the molds are opened. Tighten, then, the thermoplastic synthetic resin material is air blown to form a hollow sun visor body, and at the same time, the front and back plate portions of the sun visor body are formed by the protrusions projected on the mold surfaces of the two molding dies. A method for manufacturing a vehicle sun visor, characterized in that reinforcing ribs are provided on the inner surface of the vehicle in a substantially opposed manner with a predetermined gap therebetween.