JPH09142143A - Sun visor for automobile and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of manufacturing processes and the number of kinds of materials and to reliably reduce a manufacturing cost. SOLUTION: A sun visor for an automobile rotatably mounted around a stay 4 arranged in a proper place in an automobile room comprises a plate-form shading plate 2; and a stay external fit-in part 22 fitted externally of the stay 4 formed at an upper part of the shading plate 2. The shading plate 2 has the interior formed in a cavity through a blow-molding method by using thermoplastic synthetic resin as a raw material and the stay external fit-in part is formed in a cylindrical shape integrally with the shading plate in a spot right downstream from a compressed air blow port through a blow molding method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sun visor as a sunshade attached to a front windshield of an automobile and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a sun visor 10 for an automobile as shown in FIG. 7 is known. This sun visor 10
Is a wire-made core material 110 bent into a substantially rectangular shape.
And a pad material 120 in which the core material 110 is embedded and which is made of a foamable synthetic resin, and a skin 130 which covers the pad material 120.

A visor holder 140 embedded in a pad material 120 is attached to the upper end of the core material 110. This visor holder 140 is a stay 20
Is rotatably fitted around a horizontal axis of the stay 20, and is also rotatable around a vertical axis of the stay 20, and the sunshade posture of the sun visor 10 can be arbitrarily set by performing these rotation operations. It is like this.

The sun visor 10 as described above is manufactured as follows. That is, first, the wire is bent in a square shape to form the core material 110, and the visor holder 140 is fixed to one side edge portion of the core material 110, while the outer skin 130 in which the web is formed into a bag shape is formed by sewing or the like. Next, this skin 130
The core material 110 is inserted therein, and in a state where the core material 110 is mounted in a cavity of a mold (not shown), a raw material of the expandable synthetic resin is supplied into the outer skin 130, and then a foaming process such as heating is performed.
As a result, the sun visor 10 having the integral skin structure in which the core material 110 is embedded in the pad material 120 obtained by forming the foam by foaming the resin raw material is obtained.

First, the pad material 120 in which the core material 110 is embedded is foam-molded, the pad material 120 is covered with a web, and then the peripheral edge portion is joined by sewing or welding, whereby the pad material 120 is covered. There is also a manufacturing method in which the sun visor 10 in a state of being coated with is prepared.

[0006]

In the conventional method of manufacturing the sun visor 10 as described above, the core material processing step of bending the wire to form the core material 110, and cutting the web into a predetermined shape. The step of forming the bag-shaped skin 130, the step of injecting the resin material into the skin 130 in which the core material 110 is embedded, the step of foaming the resin material in the skin 130, and the like are indispensable. There was an inconvenience that the work cost was very large and the cost was high.

The sun visor 10 includes a wire for the core material 110, a raw material of a foaming synthetic resin for the pad material 120,
Further, the web for the outer skin 130 and at least three kinds of materials are required, which is disadvantageous in that the material cost increases.

As described above, the conventional sun visor 10 is required.
Had a problem that the manufacturing efficiency was poor, the material cost was high, and the manufacturing cost was high in the end.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to reduce the number of manufacturing steps and the kinds of materials, which can surely reduce the manufacturing cost. An object is to provide a sun visor for automobiles and a manufacturing method thereof.

[0010]

A sun visor for an automobile according to claim 1 of the present invention is a sun visor for an automobile which is rotatably mounted around a stay provided in an interior of the automobile, and is a flat plate. -Shaped awning plate and a stay outer fitting portion formed on the upper side of the awning board, and the awning plate and the stay outer fitting portion are integrally formed by a blow molding method using a thermoplastic synthetic resin as a raw material. It is characterized by being.

According to this sun visor for automobiles, the awning plate can be made of only one kind of thermoplastic synthetic resin, and the material cost is higher than that of the conventional one composed of the core material, the pad material and the skin. Is reduced. Further, since the shade plate is made by blow molding and can be obtained by one molding operation, the manufacturing cost becomes low. Moreover, since the obtained sunshade plate is extremely lightweight, it is difficult for the set posture to change due to the vibration of the automobile.

A sun visor for an automobile according to claim 2 of the present invention is the sun visor for an automobile according to claim 1, wherein a visor holder for supporting the awning plate on the stay outer fitting portion is provided on the stay. The visor holder is characterized in that the visor holder is shaped so as to be press-fitted into the cylinder of the stay outer fitting portion while holding the stay.

According to this sun visor for automobiles, the awning plate is surely supported by the stay by the visor holder installed inside the stay outer fitting portion.

A sun visor for an automobile according to claim 3 of the present invention is the sun visor for an automobile according to claim 1, wherein a male screw portion is provided on an outer peripheral surface of the stay outer fitting portion, A visor holder for supporting the awning plate on the stay, and a detent sensation providing means for imparting a detent sensation to the rotation of the awning plate around the stay, are provided.
The visor holder is formed by a cap member provided with a through hole through which the stay penetrates and a female screw portion that is screwed into the male screw portion, and the stay is attached to the stay outer fitting portion. The portion to be externally fitted has a flat portion, and the moderation giving means is press-fitted into the cylinder of the stay outer fitting portion and is shaped so as to elastically press and clamp the flat portion of the stay. It is characterized by being present.

According to this sun visor for automobiles, the stay feeling is attached to the flat portion of the stay with the stay penetrating the through hole of the head of the cap member, and then the stay feeling imparting means is attached to the stay. By screwing the cap member into the stay outer fitting portion while press-fitting it in the cylinder of the outer fitting portion, the shade plate is attached to the stay through the cap member and the moderation imparting means.

Since the through hole of the cap functions as a bearing when the sunshade plate is mounted on the stay, the sunshade plate is reliably supported rotatably around the stay. When the sunshade plate is rotated around the stay, the click feeling imparting means that is press-fitted into the cylinder of the stay outer fitting portion rotates together, and the click feeling imparting means holds the flat portion of the stay and the flat portion. The clamping thickness is different depending on the state where the outer peripheral surface of the stay other than the portion is pressed and clamped, and the elastic force that clamps the stay by the moderation imparting means is changed. .

According to a fourth aspect of the present invention, there is provided a method of manufacturing a sun visor for an automobile, comprising: a flat awning plate provided rotatably around a stay provided in an interior of the automobile;
In a method of manufacturing a sun visor for an automobile, which comprises a stay outer fitting portion formed on the upper side of the sunshade plate, a thermoplastic synthetic resin that is heated and melted is discharged from a nozzle to form a parison, and the parison is a mold. To form a awning plate by supplying compressed air into the parison in the cavity, and then supporting the awning plate on the stay fitting part of the awning plate die-cut from the cavity. It is characterized by mounting the visor holder of.

According to this method of manufacturing a sun visor for automobiles, the sunshade plate can be made of one kind of thermoplastic synthetic resin, which is different from the conventional one made of a core material, a pad material and a skin. Material costs are reduced. Further, since the shade plate is made by blow molding and can be obtained by one molding operation, the manufacturing cost becomes low. Moreover, since the obtained sunshade plate is extremely lightweight, it is difficult for the set posture to change due to the vibration of the automobile.

[0019]

1 is a partially cutaway perspective view showing an embodiment of a sun visor according to the present invention. As shown in this figure, the sun visor 1 is formed by including a awning plate 2 having a hollow inside, and a visor holder 3 mounted on one upper side of the awning plate 2. The visor holder 3 is externally fitted to a laterally extending side portion of an L-shaped stay 4 which is rotatably mounted in the vehicle interior about a vertical axis. As a result, the shade plate 2 is rotatable about the vertical axis and the horizontal axis of the stay 4, so that the shade position of the shade plate 2 can be arbitrarily set.

The awning plate 2 is made of a thermoplastic synthetic resin as a raw material and is manufactured by feeding compressed air into a synthetic resin raw material which is heated and melted. The wall thickness is approximately 1 mm by a so-called blow molding method. Manufactured adjusted to The shape of the shade plate 2 is not particularly limited, but in this embodiment, it is formed in a rectangular shape as a whole. Then, a knob portion 21 protruding in the horizontal direction is formed on one upper end portion (left side in FIG. 1) of the shade plate 2 and a horizontal direction for fitting the visor holder 3 on the other upper end portion. A stay outer fitting portion 22 having an extending fitting hole 22a is formed.

As the thermoplastic resin, polyethylene, polypropylene, polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, etc. can be preferably used. In this embodiment, polyethylene terephthalate is used, and the awning plate 2 obtained by adding a predetermined pigment to this is colored gray. The shade plate 2 may be colored green, red, blue or the like instead of gray.

FIG. 2 is a perspective view showing an embodiment of the blow molding apparatus. As shown in this figure, the blow molding device 5 includes a pair of left and right mold clamping cylinders 51, a pair of rams 52 that are slidably fitted in the cylinders 51 and also serve as piston rods, and tips of these rams 52. A pair of Tokiwa 53 fixed so as to face each other, and these Tokiwa 53
Of the molds 54 mounted on the facing surfaces of the molds, and these molds 5
4 and a raw material supply cylinder 55 provided on the upper side of

Operating oil is supplied to each of the cylinders 51 from a hydraulic mechanism (not shown), whereby the ram 52 moves back and forth. When the rams 52 are advanced, the left and right dies 54 are in close contact with each other.

On the surface of each of the above-mentioned molds 54, cavities 54a conforming to the three-dimensional shape of each one side of the outer appearance of the shade plate 2 shown in FIG. 1 are recessed. A nozzle outer fitting portion 54b, which is semi-circular in plan view and is fitted to the nozzle 55d provided at the other end of the raw material supply cylinder 55, is provided in the upper portion of the cavity 54a. Fitting part 5
4b is formed with a sharply pointed knife edge portion 54c immediately below the lower end portion 4b and in the vicinity thereof, and the sharpened portions of the knife edge portion 54c are brought into contact with each other in a state where the respective molds 54 are brought into contact with each other. There is.

Inside the cavity 54a between the knife edge portion 54c and the nozzle outer fitting portion 54b, there is a heat-softened cylindrical synthetic resin material hanging from the nozzle 55d.
A parison accommodating portion 54d for accommodating the so-called parison 6 is formed. The parison accommodating portion 54d is a portion corresponding to the upper edge portion of the shade plate 2 (FIG. 1).

The raw material supply cylinder 55 has a double pipe structure, and includes an inner pipe 55a and an outer pipe 5 surrounding the inner pipe 55a.
And 5b. The annular resin material passage 5 is provided between the outer peripheral surface of the inner pipe 55a and the inner peripheral surface of the outer pipe 55b.
5c is formed, compressed air A inside the inner pipe 55a
It is said to be the passage.

The nozzle 55d has a compressed air discharge hole 55e extending in the vertical direction at the central portion, and
An annular resin material discharge hole 55f is provided outside the compressed air supply / discharge hole 55e. Then, the compressed air discharge hole 55
e communicates with the inner pipe 55a, and the resin raw material discharge hole 55f communicates with the resin raw material passage 55c, whereby the compressed air A supplied to the inner pipe 55a becomes the nozzle 55.
The resin raw material M discharged to the outside through the compressed air discharge hole 55e of d and supplied to the resin raw material passage 55c is discharged to the outside through the resin raw material discharge hole 55f. By discharging the resin raw material M from the resin raw material discharge hole 55f, the cylindrical parison 6 is provided immediately below the nozzle 55d.
Is formed to hang down.

On the other hand, the inner pipe 5 is provided near the blow molding device 5.
A compressed air supply source 7 for supplying compressed air to 5a and a molten resin raw material supply source 8 for supplying the resin raw material M to the resin raw material passage 55c of the raw material supply tube 55 are provided. A compressed air pipe 71 is provided between the compressed air supply source 7 and the inner pipe 55a.
The compressed air pipe 71 is provided with an opening / closing valve 72, and the opening / closing operation of the opening / closing valve 72 is used to supply or stop the supply of the compressed air A to the inner pipe 55a.

A raw material resin pipe 81 is provided between the molten resin raw material supply source 8 and the resin raw material passage 55c.
A raw material discharge pump 82 is provided in the raw material resin pipe 81. The raw material discharge pump 82 is driven and stopped to supply and stop the supply of the resin raw material M to the resin raw material passage 55c. Therefore, when the resin raw material M is supplied from the molten resin raw material supply source 8 to the resin raw material passage 55c by driving the raw material discharge pump 82, the resin raw material M is led out through the resin raw material discharge hole 55f of the nozzle 55d to the outside. The cylindrical parison 6 in a softened state is formed below 55d.

A cooling water passage 90 for passing the cooling water W is arranged in a meandering manner in each of the platens 53.
A cooling water source 9 is provided near the blow molding device 5, and a cooling water pipe 91 is provided between the cooling water source 9 and the cooling water passage 90.
Connected by An opening / closing valve 92 is provided in the cooling water pipe 91, and the opening / closing operation of the opening / closing valve 92 adjusts the supply state of the cooling water W from the cooling water source 9 to the cooling water passage 90.

The manufacture of the sunscreen 2 of the sun visor 1 will be described below with reference to FIG. FIG. 3 is a schematic cross-sectional view of a blow molding device for explaining the production of the sunshading plate using the blow molding device. (A) shows a state in which a parison is formed in the lower part of the nozzle, (b) shows blow. The respective states are shown while molding is being performed.

When performing blow molding, first, referring to FIG.
As shown in (a) of (a), the pair of left and right cylinders 51 is driven to retract each ram 52, and the opposing surfaces of the pair of molds 54 are separated from each other. Next, the raw material discharge pump 82
Driving the resin raw material M in the molten resin raw material supply source 8 through the raw material resin pipe 81 and the resin raw material passage 55c of the raw material supply tube 55 to the outside from the nozzle 55d. Then, the resin material M in a heated and melted state led out from the annular resin material discharge hole 55f (FIG. 2) of the nozzle 55d hangs down in a cylindrical shape, and the cylindrical parison 6 is sequentially formed below the nozzle 55d. To go.

The raw material discharge pump 82 is stopped when the length of the parison 6 becomes slightly longer than the vertical dimension of the mold 54. Then, as shown in FIG. 3A, the parison 6 which is slightly longer than the parison 6 is formed between the pair of spaced apart molds 54. In this state, when each cylinder 51 is driven to move each ram 52 forward, as shown in (b) of FIG. 3, the respective molds 54 have their opposing surfaces stopped against each other, whereby the parison 6 is It is in a state of being loaded in the cavity 54a formed by the pair of molds 54 being united. At this time, the longer part of the parison 6 than the mold 54 is the knife edge part 54.
It is cut by c and discharged outside the system as pinch-off 61.

Then, the open / close valve 72 is opened in this state. Then, the compressed air A from the compressed air supply source 7 is supplied into the parison 6 from the compressed air discharge hole 55e (FIG. 2) of the nozzle 55d through the compressed air pipe 71 and the inner pipe 55a of the raw material supply cylinder 55. The parison 6 in a softened state that can be plastically deformed by the expansion expands like a balloon in the cavity 54a, and the awning plate 2 shown in FIG. 1 in which the inside is hollow and the external shape matches the shape of the cavity 54a is formed. It

Next, by opening the on-off valve 92, the cooling water W from the cooling water source 9 is sent into the cooling water passage 90, and this cooling water W passes through the base plate 53 and the mold 54, and the shade plate in the cavity 54a. 2 is cooled so that the shade plate 2 is not plastically deformed. Then, the rams 52 are moved backward by driving the cylinders 51 to release the mold 54 and take out the completed shade plate 2.

The sun visor 1 according to the present invention is formed by fitting the visor holder 3 into the fitting hole 22a of the stay outer fitting portion 22 of the shade plate 2 thus obtained. Hereinafter, a method of mounting the visor holder 3 and the stay outer fitting portion 22 will be described.

FIG. 4 is a perspective view showing a first embodiment of the visor holder, (A) is an exploded view and (B) is an assembly drawing. As shown in (a) of FIG. 4, in the visor holder 3 of the first embodiment, the U-shaped base body 30 in cross section is
It is formed by bending a rectangular plate made of metal so that both side parts approach each other with the central part as a boundary. The base body 30 thus formed is dimensioned so that it can be fitted into the fitting hole 22a of the shade plate 2 in a sliding contact state.

In this manner, the base 30 is formed with a pair of arcuate bulging portions 31 extending in the horizontal direction on the base end side (right side in FIG. 4) of a forked shape and facing each other. The pair of bulging portions 31 forms a stay holding portion 31a whose inner radius is set to be the same as that of the stay 4 on the inner surface thereof, and the visor holder 3 is attached to the stay holding portion 31a by the stay holding portion 31a. It is rotatably supported around four turns.

Further, the base body 30 has a pair of elastically deforming portions 32 in which the bulging portions 31 are not formed on the tip side of the central portion in the horizontal direction. A notch extending downward from above is formed between the pair of elastically deforming portions 32 and the bulging portion 31, whereby the pair of elastically deforming portions 32 are separated from each other without being affected by the bulging portion 31. It can be elastically deformed in any direction.

On the other hand, the stay 4 has a flat portion 41 which is recessed correspondingly to the elastically deformable portion 32 in the substantially central portion thereof, and the base body 30 extends from the stay holding portion 31a to the stay 4.
The flat portion 41 is pressed and sandwiched by the elastically deforming portion 32 in a state in which the flat portion 41 is externally fitted. Therefore, when the visor holder 3 is rotated around the stay 4, the pair of elastically deformable portions 32 are elastically deformed in the direction in which they are separated from each other, so that a sense of moderation can be obtained when the visor holder 3 is rotated. Has become.

The base body 30 of such a visor holder 3
A screw hole 33 is screwed on the upper part of the, and a through hole 22b corresponding to the screw hole 33 is formed on the stay outer fitting portion 22 of the shade plate 2. Therefore, with the visor holder 3 pressed into the fitting hole 22a, the through hole 22b
By inserting a screw 34 into the screw hole and screwing it into the screw hole 33, the visor holder 3 is attached to the awning plate 2, and the visor holder 3 in this state
By externally fitting the to the stay 4, the shade plate 2 is attached to the stay 4 as shown in FIG.

FIG. 5 is a perspective view showing a second embodiment of the visor holder, (A) is an exploded view and (B) is an assembly drawing. The visor holder 3a of the second embodiment is shown in FIG.
As shown in (a) of FIG. 7, the second bulging portion 35 similar to the bulging portion 31 is formed further on the tip side of the elastically deforming portion 32 of the base body 30, and the screw hole 33 is screwed into the base body 30. The visor holder 3 of the first embodiment except that it is not provided.
Is the same as

The length of the visor holder 3a of this embodiment is larger than that of the visor holder 3 of the first embodiment because the second bulging portion 35 is provided. When this visor holder 3a is press-fitted into the fitting hole 22a of the shade plate 2, as shown in FIG. 5B, the stay outer fitting part 22 is inserted by the press-fitting of the second bulging portion 35 into the fitting hole 22a. A bulging deformation portion 22c that elastically bulges outward is formed, and the second bulging portion 35 is tightened by the restoring force of the bulging deformation portion 22c, so that the visor holder 3a is fitted. It is surely prevented from coming out of the mounting hole 22a.

FIG. 6 is a perspective view showing a third embodiment of the visor holder, (A) is an exploded view and (B) is an assembly view. The visor holder 3b of the third embodiment is shown in FIG.
As shown in (a), it is formed by including a cap member 36 fitted onto the stay 4 and a U-shaped elastic member 37 installed in the cap member 36.

The cap member 36 has a fitting hole 36a through which the stay 4 is fitted at the bottom thereof, and
A female screw 36b is screwed on the inner peripheral surface. On the other hand, the stay outer fitting portion 22 of the shade plate 2 is provided with a male screw 22d corresponding to the female screw 36b of the cap member 36.
The visor holder 3b is fixed to the stay outer fitting portion 22 by screwing 6a onto the male screw 22d.

The U-shaped elastic member 37 is dimensioned so as not to rotate around the center line extending in the horizontal direction of the stay outer fitting portion 22 when fitted in the fitting hole 22a of the shade plate 2. . Such a U-shaped elastic member 37 is fitted into the flat portion 41 of the stay 4 in a state where the bifurcated portions facing each other are spread out against the elastic force, and is flattened by the restoring force of the bifurcated portions. The portion 41 is pressed and sandwiched.
In this state, the cap member 36 is screwed and fastened to the stay outer fitting portion 22, so that as shown in (b) of FIG.
The shade plate 2 is attached to the stay 4.

When the cap member 36 is attached to the stay 4, the U-shaped elastic member 37 is fitted in the fitting hole 22a while being prevented from rotating.
Therefore, when the shade plate 2 is rotated around the stay 4, the bifurcated portion of the U-shaped elastic member 37 resists the elastic force due to the co-rotation of the U-shaped elastic member 37 that presses and holds the flat portion 41. Since it is pushed and spread, a sense of moderation will be obtained.

As described in detail above, according to the present invention, the awning plate 2 of the sun visor 1 is manufactured by a blow molding method using a thermoplastic synthetic resin as a raw material. Therefore, as shown in FIG. 110, pad material 120 and skin 1
Compared to the conventional sun visor 10 formed by 30, the material for the sunshade plate 2 can be made of one type, which is extremely effective in reducing the material cost and the manufacturing cost.

The awning plate 2 according to the present invention has a hollow interior and a wall thickness of about 1 mm. Therefore, the awning plate 2 is extremely lightweight and has excellent shock absorbing performance.
This has the advantage that it is difficult to change the light-shielding posture of the shade plate 2 which is set by the vibration of the running vehicle.

Further, since the awning board 2 according to the present invention is made of one kind of material, it can be provided as it is as a regenerated raw material for recycling without being decomposed at the time of disposal, and it has a recyclability. It is also excellent in terms.

The present invention is not limited to the above embodiment, but may include the following contents.

(1) In the above embodiment, in the blow molding for manufacturing the shade plate 2, the thermoplastic synthetic resin in a heated and molten state is injected from the nozzle 55d to directly form the parison 6, and then the gold parison 6 is formed. The so-called direct blow method of supplying the compressed air A to the parison 6 in the mold 54 is used, but the present invention is not limited to the application of the direct blow method to make the awning plate 2. Alternatively, a so-called injection blow method may be adopted in which a synthetic resin raw material is once injection-molded to form an original shape of the awning board 2, and compressed air A is blown into the original shape to form the awning board 2.

When the injection blow method is adopted, the synthetic resin raw material is preliminarily molded into a shape similar to the shape of the shade plate 2, so that the thickness dimension can be made more uniform and the stay outer fitting is performed. It is possible to set the portion 22 to a substantially arbitrary shape and improve the dimensional accuracy.

It is also possible to make a hole penetrating the front and back of the awning plate 2 by devising a cavity of a mold for injection molding, and the awning drawn around this hole or the hole. It can be used as a locking portion for stabilizing the posture of the plate 2.

(2) In the above embodiment, the separately manufactured visor holders 3, 3a, 3b are attached to the stay outer fitting portion 22 of the shade plate 2.
Instead of this, the inner diameter of the fitting hole 22a of the stay outer fitting portion 22 is set to be substantially the same as the outer diameter of the stay 4, and
A convex portion corresponding to the flat portion 41 of the stay 4 is formed at an appropriate position on the inner peripheral surface of the fitting hole 22a, and the convex portion abuts the flat portion 41 in a state where the fitting hole 22a is externally fitted to the stay 4. You may do it.

With this arrangement, when the sunshade plate 2 is rotated around the stay 4, the convex portion is disengaged from the flat portion 41 so that the stay outer fitting portion 22 itself is elastically deformed,
The restoring force of this elastic deformation makes it possible to obtain a feeling of moderation. And the visor holders 3, 3a, 3
Since b is not attached, the number of parts is reduced, and material cost and assembly cost are reduced.

[0057]

According to the sun visor for automobiles according to claim 1 of the present invention, since the sunshade plate has a hollow interior formed by a blow molding method using a thermoplastic synthetic resin as a raw material. It is possible to do with one kind of thermoplastic synthetic resin, and the material cost of the sunshade plate is greatly reduced compared to the conventional one composed of core material, pad material, skin, etc. Since it can be obtained, the manufacturing cost becomes low, which is economically advantageous.
Moreover, since the obtained awning plate is extremely lightweight, it is difficult for the set posture to change due to the vibration of the automobile, which is convenient for always obtaining the awning effect.

According to the sun visor for automobiles of the second aspect of the present invention, since the visor holder for supporting the awning plate on the stay is internally provided in the stay outer fitting portion, the stay outer fitting portion is fitted in the stay outer fitting portion. The presence of the provided visor holder ensures that the shade plate is connected to the stay.

According to the sun visor for automobiles of the third aspect of the present invention, since the visor holder for supporting the awning plate on the stay is externally fitted to the stay external fitting portion, the stay external fitting portion is externally fitted to the stay external fitting portion. The presence of the provided visor holder ensures that the shade plate is connected to the stay.

According to the method for manufacturing a sun visor for automobiles according to claim 4 of the present invention, a thermoplastic synthetic resin which is heated and melted is discharged from a nozzle to form a parison, and the parison is placed in the cavity of the mold. The awning plate is formed by loading and supplying compressed air into the parison in the cavity, and then the visor holder is attached to the stay outer fitting part of the awning plate die-cut from the cavity. It is possible to use only one kind of thermoplastic synthetic resin, and the material cost is reduced as compared with the conventional one made of a core material, a pad material, a skin and the like.
Further, the awning plate is made by blow molding and can be obtained by one molding operation, so that the manufacturing cost becomes low and it is economically advantageous. Moreover, since the obtained awning plate is extremely lightweight, it is difficult for the set posture to change due to the vibration of the automobile, and it is effective in ensuring that the awning effect is always exhibited.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a sun visor according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a blow molding device.

FIG. 3 is a schematic cross-sectional view of a blow molding device for explaining the production of the sunshading plate using the blow molding device,
(A) shows a state in which a parison is formed under the nozzle,
(B) shows the state in which blow molding is being performed.

FIG. 4 is a perspective view showing a first embodiment of a visor holder, (A) is an exploded view, and (B) is an assembly view.

FIG. 5 is a perspective view showing a second embodiment of a visor holder, (A) is an exploded view, and (B) is an assembly view.

6A and 6B are perspective views showing a third embodiment of a visor holder, where FIG. 6A is an exploded view and FIG. 6B is an assembly view.

FIG. 7 is a partially cutaway perspective view showing an example of a conventional sun visor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 sun visor 2 sunshade 21 picking part 22 stay outer fitting part 22a fitting hole 22b through hole 22c bulging deformation part 22d male screw 3,3a, 3b visor holder 31 bulging part 31a stay clamping part 32 elastic deformation part 33 screw Hole 34 Screw 35 Second bulge portion 36 Cap member 36a Fitting hole 37 U-shaped elastic member 4 Stay 41 Flat portion 5 Blow molding device 51 Cylinder 52 Ram 53 Regular plate 54 Mold 54a Cavity 55 Raw material supply cylinder 55a Inner tube 55b Outside Pipe 55c Resin raw material passage 55d Nozzle 55e Compressed air discharge hole 55f Resin raw material discharge hole 6 Parison 61 Pinch off 7 Compressed air supply source 71 Compressed air piping 72 Open / close valve 8 Molten resin raw material supply source 81 Raw material resin pipe 82 Raw material discharge pump 9 Cooling water source 91 Cooling water piping 92 Open / close valve A Compressed air Resin raw material W cooling water

Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B29L 31:00

Claims (4)

[Claims] 1. A sun visor for an automobile, which is rotatably mounted around a stay provided in an interior of an automobile, and which has a flat awning plate and a stay outer fitting formed on an upper portion of the awning plate. The sun visor for automobiles, wherein the sunshade plate and the stay outer fitting portion are integrally formed by a blow molding method using a thermoplastic synthetic resin as a raw material. 2. The stay outer fitting portion is provided with a visor holder for supporting the sunshade plate on the stay, and the visor holder is press-fitted into a cylinder of the stay outer fitting portion while holding the stay. The sun visor for automobiles according to claim 1, wherein the sun visor has a shape set as described above. 3. The stay outer fitting portion is provided with a male screw portion on an outer peripheral surface thereof, and a visor holder for supporting the awning plate on the stay, and a moderation for rotation of the awning plate around the stay. A cap member having a through hole through which the stay penetrates and a female screw portion that is screwed into the male screw portion. The stay is provided with a flat portion at a portion externally fitted to the stay external fitting portion, the moderation imparting means is press-fitted into a cylinder of the stay external fitting portion, and the flat portion of the stay is fixed to the stay external fitting portion. The sun visor for automobiles according to claim 1, wherein the shape is set so as to elastically press and sandwich. 4. A sun visor for an automobile, which comprises a flat plate-shaped awning plate that is rotatably mounted around a stay provided in the interior of an automobile, and a stay external fitting portion formed on an upper side of the awning plate. In the manufacturing method, the heat-melted thermoplastic synthetic resin is discharged from a nozzle to form a parison, the parison is loaded into the cavity of the mold, and compressed air is supplied into the parison in the cavity to protect the awning plate. And a visor holder for supporting the awning plate to the stay, the visor holder being mounted on the stay outer fitting portion of the awning plate that is die-cut from the cavity.