JPH1044771A - Sunvisor for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight and cost for a sunvisor core, and to improve the design of an automobile sunvisor which is obtained by covering with a sunvisor skin an outer surface of the sunvisor core composed of a beads foam molding. SOLUTION: A sunvisor core 20 is formed by inserting the wires 22 into a beads foam molding 21 in a condition that the installation areas thereof are minimized, and is reinforced by a net 25, that is, the weight can be reduced by the saving of the wires 22, the deformation can be prevented by the strength to the tensile stress, of the net 25, and the initial shape can be kept for a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sun visor for automobiles having excellent impact resistance, and more particularly to a sun visor for automobiles capable of promoting weight reduction and having improved design.

[0002]

2. Description of the Related Art Generally, a sun visor for an automobile is installed in front of a front occupant in an automobile interior, and is usually stored on a ceiling surface to secure the occupant's view from sunlight or lights of an oncoming vehicle at night. As described above, it is possible to rotate the front window or the side window.

FIG. 8 is a perspective view showing a conventional sun visor for an automobile, FIG. 9 is a sectional view showing the configuration of the sun visor for the automobile, and FIG. 10 is an explanatory view showing the configuration of a sun visor core in the sun visor for an automobile.

That is, the sun visor 1 for an automobile has a substantially L-shaped rotating shaft 3a for rotatably supporting a sun visor body 2 having a desired light shielding area is attached to a bracket 3b fixed to a ceiling surface. I have.

[0005] The sun visor body 2 is constituted by enclosing the outer surface of a sun visor core 4 with a sun visor skin 5. The sun visor core 4 is made of a light-weight, high-impact-resistant bead such as a PP bead. A loop-shaped wire frame 6 is inserted inside the foamed molded product along the outer peripheral shape of the product, and a support 6a for bearing the rotating shaft 3a on this wire frame 6 and an assist for engaging with a holder (not shown) on the vehicle body side. The knob 6b is fixed.

Further, the sun visor skin 5 is formed by sewing a laminated sheet material in which a cushion material 5b such as polyurethane foam is laminated on the back surface of a cloth 5a having an excellent appearance design into a bag shape by sewing. After the sun visor core 4 is inserted therein, the sun visor body 2 is formed by joining the openings by welding.

Incidentally, recently, the edge portion 2 of the sun visor body 2 on the side window side is adapted to follow the curved surface of the ceiling.
In this configuration, the sun visor core 4 is divided into a main body portion and an edge portion, and the wire frame 6 extends to the inside of the hinge portion 7. At the end, the sun visor skin 5 is welded along the boundary line between the two to provide flexibility by the cloth hinge effect at this portion.

[0008]

As described above, the sun visor 1 for an automobile in which the outer surface of the sun visor core 4 made of a foamed bead is covered with the sun visor skin 5.
Is a wire visor 6 which is lightweight and has excellent impact resistance, but is bent in a loop shape.
Since the wire frame 6 is inserted therein, the wire frame 6 has a disadvantage that the weight is impaired, and the processing cost of the wire frame 6 is high, which leads to an increase in cost.

Further, in order to secure rigidity in a central portion or the like where the wire frame 6 is not occupied, it is necessary to lower the expansion ratio of the expanded bead body. This also has the disadvantage of increasing costs.

Furthermore, the bead foam molded article is strong against compressive stress but relatively weak against tensile stress. When the rotating operation of the sun visor body 2 is frequently performed, warpage deformation or the like is likely to occur due to the tensile stress. There was a problem that the shape of the sample was damaged and the design was reduced.

In addition, since the hinge portion 7 is provided with a hinge function by the sun visor skin 5, when the sun visor 1 is used, the sense of unity of the edge portion 2a is impaired, and there is a problem in usability.

The present invention has been made in view of such circumstances, and has an outer surface of a sun visor core based on a bead foam molded article that is lightweight and has excellent impact resistance. In the automotive sun visor, the sun visor core has a lighter weight, lower cost, and improved appearance by adopting a structure that is lighter and more resistant to deformation than the conventional sun visor core. It is intended to provide.

[0013]

In order to achieve the above object, the present invention comprises a sun visor body having an outer surface of a sun visor core covered by a sun visor skin rotatably supported by a rotation shaft. In a sun visor for an automobile, the sun visor core is a wire that imparts rigidity inside a bead foam molded body molded into a required shape,
And a net is inserted.

Here, the sun visor core comprises a foamed bead, a wire and a net inserted into the foamed bead.

As the above-mentioned bead foam molding, besides polypropylene (PP) beads, materials such as polystyrene (PS) beads and polyethylene (PE) beads can be used, but PP beads foam molding is preferred from the viewpoint of cost, rigidity and the like. .

Next, in order to maintain the shape of the sun visor, it is preferable that the wire inserted into the foamed bead be set along the upper edge of the sun visor.
If the support and the auxiliary knob are fixed to the wire, the strength of the holder and the auxiliary knob is also stabilized.

On the other hand, as the net to be inserted into the foamed bead, first, a material having compatibility with the material of the beads used in the foamed bead is preferable.
If the beads are firmly engaged, even if there is no compatibility, the mesh size may be set larger than the bead particles, and the net may be knitted.

For example, when PP beads are used as a bead foam molding, the net material may be PP net, a mixed spinning net of PP and nylon, or polyester, nylon net, polyester net, or the like. PP mixed spinning nets can be expected to be compatible with PP beads. In the case of nylon nets and polyester nets, there is no compatibility with PP beads, but by adjusting the size of the mesh, the PP beads can be mixed with the net. The net can be inserted and fixed at a predetermined location in the bead foam molded body by the anchor effect between them.

When using PE beads or PS beads in addition to PP beads as the material of beads used for the bead foam molding, the material of the net may be selected in the same manner.

Next, a method of inserting a net will be described.

First, it is premised that a net is used to supplement the tensile stress in consideration of the characteristic that the bead foam molded article is resistant to compressive stress and weak to tensile stress. A single net may be inserted almost in the center of the bead foam molded body, but if two nets are inserted vertically and vertically over the entire sun visor core, there is a function of further preventing deformation. .

In addition to this, as a method of inserting a net, it is also possible to selectively insert a net only in a portion where rigidity is required, instead of inserting the net entirely.

For example, when a mirror unit is mounted,
It is possible to insert the net only at the center of the sun visor core where the mirror unit is mounted, or to insert the net only at the hinge part where hinge rigidity is required to follow the curved surface of the ceiling is there.

Next, the sun visor skin is formed into a bag shape by sewing a laminated sheet material having a cushion material such as a polyurethane foam lined on the back surface of the cloth in consideration of design and cushioning properties, and a sun visor core is formed in the bag. After being housed, it can be easily manufactured by joining the openings by welding.

As is apparent from the above configuration, the sun visor for an automobile according to the present invention has a configuration in which a wire and a net are inserted inside the foamed bead body as the sun visor core, so that the conventional wire frame is used. Compared with the insert structure, the amount of wire used is small, and troublesome bending of the wire frame is not required.

Further, since the tensile stress is supplemented by the net inserted into the bead foam molded article, it is not necessary to set a low expansion ratio of the bead foam molded article.

Further, since the tensile stress is strengthened by the net inserted into the expanded bead body, even if the sun visor body is frequently rotated, the warp deformation does not occur and the hinge is not deformed. Since the rigidity can be increased by the net even in the bent portion that can be bent based on the portion, the sense of unity of the bent portion can be emphasized.

[0028]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sun visor for an automobile according to an embodiment of the present invention.

FIG. 1 is a perspective view showing a sun visor for an automobile in which an edge portion is bendable so as to follow a curved surface of a ceiling.
FIG. 2 is a sectional view showing the structure of the sun visor for an automobile, and FIG.
FIG. 2 is a cross-sectional view showing a configuration of a bent portion of the sun visor for an automobile.

FIG. 4 is a partially cutaway perspective view showing one embodiment of a sun visor core used in a sun visor for an automobile according to the present invention, and FIGS. 5 and 6 are cutaway perspective views showing another embodiment of a sun visor core. FIG. 7 is a sectional view showing another embodiment of the sun visor core.

First, an automotive sun visor 1 according to the present invention.
0 will be described with reference to FIGS. 1 to 3.

The sun visor 10 for an automobile is rotated by a rotatable shaft 12 for supporting a sun visor body 11 having a desired light shielding area is rotatably inserted into a bracket 13 fixed to the ceiling side. Working shaft 1
By rotating around the axis 2 and rotating the shaft 12 itself,
The sun visor body 11 is rotatable up, down, left and right,
From the storage position stored on the ceiling surface, an arbitrary deployment position can be taken on each of the front window side and the side window side.

Further, as shown in FIGS. 2 and 3, the sun visor main body 11 is constituted by enclosing an outer surface of a sun visor core 20 forming a core portion with a sun visor skin 30.

The sun visor skin 30 is made of a laminated material having a cloth 31 lined with a cushion material 32 such as a polyurethane foam on the back surface of the cloth 31.
Formed by sewing into a bag shape with a capacity to accommodate 0,
After the sun visor core 20 is inserted and housed in the bag-shaped portion, the opening of the bag-shaped portion is joined by welding or the like to form the sun visor body 11.

The sun visor 1 for an automobile according to the present invention
0 is flattened in the use state, and when stored on the ceiling surface, the edge portion 15 is freely bendable based on the hinge portion 14 so that it can be stored by fitting to the curved surface of the ceiling. .

The feature of the automotive sun visor 10 according to the present invention is that, as shown in FIG.
The aim is to reduce the weight and cost of the device and to enhance the design.

That is, as shown in FIG. 4, the sun visor core 20 has a wire 22 inserted in a bead foam molded body 21 which is lightweight and has excellent impact resistance. A support 23 for bearing the bearing 12 and an auxiliary knob 24 that can be engaged with a holder on the vehicle body side are attached, and a reinforcing net 25 is inserted in the bead foam molded body 21 over the entire sun visor core 20. .

More specifically, since the wire 22 is desirably set at a minimum position, such as a holder 23 mounting portion and an auxiliary knob 24 mounting portion requiring mechanical strength, the upper edge portion of the sun visor body 11 is desired. It is installed along.

The net 25 is made of the expanded bead 2.
In the present embodiment, a 20-fold foamed PP bead molded article having a thickness of 18 mm is used as the material of the foamed bead molded article 21. May be adjusted as appropriate, and materials such as PE beads and PS beads can be used in addition to PP beads.

On the other hand, in this embodiment, the net 25 is
And a blend of polyester.

The reason is as follows.
At the time of molding, PP is melted, and the net 25 is firmly joined inside the bead foam molded body 21 due to the compatibility of PP.

When a PP bead foam is used as the bead foam 21, a net 25 made of PP resin fiber or a net 25 made of nylon or polyester resin fiber may be inserted.

In this case, the net 2 made of PP resin fiber
5 is such that a part of the surface is melted and the net 25 can be firmly joined to the bead foam molded body 21, and when the nylon 25 or polyester resin net 25 is used, the beads of the bead foam molded body 21 are used. It is sufficient to set the mesh interval larger than that, and since the beads have a diameter of 2 to 3φ, the net 2 having a larger mesh interval is used.
5 is sufficient.

Next, the manufacturing process of the sun visor core 20 will be briefly described, although not shown. The wire 22 to which the support 23 and the auxiliary knob 24 are previously attached is set in a bead foaming mold, and the net is set by a set pin. After setting 25 in almost the middle part of the mold cavity, the cavity is filled with foamed PP resin beads,
By supplying steam at 140 to 150 ° C. into the cavity, P
After further expanding the P-resin beads and welding the bead surface, the mold is cooled to obtain a wire 2.
2. The bead foam molded body 21 interposed with the net 25 is molded into a required shape.

As described above, in the sun visor 10 for an automobile according to the present invention, the use of the lightweight and excellent impact-resistant bead foam molded body 21 as the structure of the sun visor core 20 is the same as before, but the weight is heavy. The installation location of the bulky wire 22 is limited to only the upper edge of the sun visor core 20 instead of the conventional perimeter of the sun visor core, so that the material cost of the wire 22 and the bending process of the wire 22 can be saved, resulting in cost reduction. In addition, it can contribute to wire saving and weight saving.

Further, by using the net 25 as a substitute for the heavy wire 22, the tensile strength can be particularly enhanced, and the warping deformation accompanying the turning operation of the sun visor 10 can be prevented.

In addition, since it is not necessary to adjust the expansion ratio of the bead expanded molded body 21 to reinforce the strength, the molding management at the time of bead expanded molding is facilitated.

In addition, as the hinge portion 14 formed on the sun visor 10 for a vehicle, a thin hinge portion 26 is provided on the sun visor core 20 corresponding thereto, and the hinge strength is provided by the net 25 and the sun visor skin 30.
This eliminates the need to form a hinge using only the sun visor skin 30 as in the related art, improves shape retention, and improves usability.

FIGS. 5 and 6 show another embodiment of the sun visor 10 for an automobile according to the present invention. The place where the net 25 is inserted is different from the embodiment shown in FIG.

First, FIG. 5 shows that a net 25 is provided at two places, a central portion of the sun visor core 20 and a thin hinge portion 26.
In this case, there is an advantage that the net 25 does not require the outer periphery trimming and that only the necessary portion is inserted through the net 25, so that the material cost of the net 25 can be reduced.

The function of the net 25 is the same as that of the above-described embodiment, and is particularly effective when a mirror unit or the like is installed in the sun visor 10 for a vehicle.

FIG. 6 shows another embodiment in which the net 25 is installed only in the thin hinge portion 26 formed on the sun visor core 20. In this embodiment, the amount of the net 25 used is reduced. There is an advantage that the cost can be greatly reduced and the processing cost of the hinge portion can be reduced.

It is needless to say that the present invention is applied to the sun visor 10 in which the hinge portion 14 is not provided.

Next, in the embodiment shown in FIG. 7, two layers of nets 25 are inserted above and below the inside of the sun visor core 20. In this case, the sun visor 10 for an automobile is provided.
For example, the upper net 25a prevents the load applied to the sun visor body 11 at the time of the turning operation of the sun visor body 11 from being deformed against the load in the direction of arrow A, while the lower net 25a prevents the load from being applied to the direction of arrow B Since the net 25b can prevent deformation, the amount of the net 25 used increases, but there is an excellent effect on deformation resistance.

[0055]

As described above, the automotive sun visor according to the present invention has the following special effects.

(1) The sun visor for an automobile according to the present invention is formed by enclosing the outer surface of a sun visor core with a sun visor skin, and in particular, as a sun visor core, a wire and a net are inserted inside a bead foam molding. Therefore, compared to the conventional configuration in which a loop-shaped wire frame is inserted along the entire circumference of the sun visor, the amount of wire used is small and the foaming ratio is not low, so that it can greatly contribute to weight reduction. Has an effect.

(2) The sun visor for an automobile according to the present invention is formed by enclosing the outer surface of a sun visor core with a sun visor skin, and in particular, as a sun visor core, a wire and a net are inserted inside a bead foam molding. Therefore, the material cost of the wires and the resin beads can be reduced, and the rigidity of the hinge portion can be particularly secured by the net, so that the hinge portion can be easily formed and the cost is greatly reduced.

(3) The sun visor for an automobile according to the present invention is formed by enclosing the outer surface of a sun visor core with a sun visor skin, and in particular, as a sun visor core, a wire and a net are inserted inside a bead foam molded article. Therefore, with respect to the tensile stress applied at the time of the rotation operation of the sun visor, the net is strengthened, there is no warpage deformation, and the sun visor core can give the shape retention of the bent portion, and the effect of improving the appearance. Have.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automotive sun visor according to the present invention.

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

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a partially broken perspective view showing a configuration of a sun visor core in the sun visor for an automobile according to the present invention.

FIG. 5 is a partially cutaway perspective view showing another embodiment of the sun visor core in the automotive sun visor according to the present invention.

FIG. 6 is a partially cutaway perspective view showing still another embodiment of the sun visor core in the automotive sun visor according to the present invention.

FIG. 7 is a sectional view showing still another embodiment of the sun visor core in the automotive sun visor according to the present invention.

FIG. 8 is a perspective view showing a conventional automobile sun visor.

FIG. 9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a partially cutaway perspective view showing a configuration of a conventional sun visor core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sun visor for automobiles 11 Sun visor main body 20 Sun visor core 21 Bead foamed body 22 Wire 25 Net 26 Thin hinge part 30 Sun visor skin

Claims (5)

[Claims] 1. A sun visor for an automobile comprising a sun visor body (11) enclosing an outer surface of a sun visor core (20) with a sun visor skin (30) rotatably supported by a rotation shaft (12). The sun visor core (20) has a wire (22) for imparting rigidity and a net (25) inserted inside a bead foam molded body (21) molded into a required shape. For sun visor. 2. The sun visor for an automobile according to claim 1, wherein said net (25) is inserted over the whole bead foam molded body (21). 3. The sun visor for an automobile according to claim 1, wherein the net (25) is interposed only in the rigidity enhancing portion in the foamed bead body (21). 4. The sun visor for an automobile according to claim 1, wherein said net (25) is made of a material compatible with the foamed bead body (21). 5. The sun visor for an automobile according to claim 1, wherein the net (25) has a mesh larger than the bead particles of the expanded bead body (21).