JP2002144866A - Sun visor for vehicle and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sun visor for vehicle and a manufacturing method therefor capable of cost reduction with a simple structure. SOLUTION: This sun visor for vehicle is stored so that an expansion plate 60 for expanding a shading area can be drawn out relative to the inside of a sun visor body 10, and the sun visor body 10 is formed into a hollow shape by blow molding. To one side of the sun visor body 10, a drawing opening inserted so that the expansion plate 60 can be drawn out is opened. A guide section 26 for drawing and guiding the expansion plate 60 is integrally formed inside the sun visor body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sun visor for a vehicle and a method of manufacturing the sun visor.

[0002]

2. Description of the Related Art Conventionally, a sun visor for a vehicle is known which has a structure in which an expansion plate for expanding a light shielding area is housed so as to be able to be drawn out inside a sun visor body. In a vehicle sun visor having such a structure, a case-like guide member for guiding the extension plate so as to be able to be pulled out is generally formed separately from the sun visor main body, and is assembled inside the sun visor main body. In addition, a stopper is provided for providing a spring member for applying a required frictional force when the extension plate is taken in and out of the case-like guide member, and a stopper portion for locking the extension plate at a drawn end position. Is provided, the case-shaped guide member is divided.

[0003]

In the above-mentioned conventional sun visor for a vehicle, a case-like guide member for guiding the expansion plate so as to be able to be pulled out is formed separately from the sun visor main body, and the sun visor main body is formed. It has to be assembled inside, so that the number of parts and the number of assembling steps are increased, and there is a problem that the cost is increased. SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle sun visor and a method of manufacturing the same, which can simplify the structure and reduce the cost in view of the above problems.

[0004]

Means for Solving the Problems To achieve the above object, the first invention has a gist as set forth in claim 1. Therefore, a draw-out port is provided on one side of the sun visor body formed in a hollow shape by blow molding, and an expansion plate for expanding the light shielding area is housed so as to be able to be pulled out, and the expansion plate is pulled out inside the sun visor body. The guide portion for guiding is formed integrally. In this way, the structure can be simplified by integrally forming the guide portion for pulling out and guiding the expansion plate inside the sun visor body,
A dedicated guide member for guiding the extension plate to be drawn out can be formed separately, and the trouble of assembling the extension plate with the sun visor body can be omitted.

Further, a second aspect of the present invention has a configuration as described in claim 2. Therefore, the expansion plate can be locked at the drawn-out end position by engaging the stopper portion integrally formed inside the sun visor body with the retaining portion of the expansion plate. For this reason, it is possible to save the trouble of manufacturing a dedicated stopper member and assembling the stopper member with the sun visor body.

A third aspect of the present invention has a gist of the structure according to the third aspect. Therefore, the opposing plate-shaped portion,
At the same time as forming a hollow sun visor body having a peripheral wall portion integrally connecting the peripheral portions of these plate-shaped portions by blow molding, a rib is formed on at least one of the plate-shaped portions, and expanded by the rib. A guide portion for guiding the board to be pulled out can be formed. As a result, the sun visor body according to the first aspect can be easily manufactured. In addition, for example, in opposite plate-like portions of the sun visor body, ribs are formed along upper and lower portions of the expansion plate,
By connecting the inner ends of these ribs integrally,
The strength of the sun visor body can be maintained at a required strength. In addition, by forming a guide groove as a guide portion for pulling out and guiding the expansion plate to the rib, the expansion plate can be guided stably.

[0007] The fourth invention has a gist of the structure as set forth in claim 4. Therefore, when blow molding the sun visor body, a bag-like projection is formed on one side of the peripheral wall of the sun visor body, and the opening corresponding to the outlet of the expansion plate is formed by cutting off the bag-like projection. It can be formed easily and accurately.

[0008]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 4 which is a perspective view of the vehicle sun visor, and FIG. 1 which is a cross section based on the line II of FIG. 4, the vehicle sun visor 1 is mainly composed of a support shaft 5 and a sun visor body 10. I have. The support shaft 5 has a vertical axis portion 6 and a horizontal axis portion 7 and is formed substantially in an L-shape. The vertical axis portion 6 is mounted at a predetermined position on the ceiling surface of the passenger compartment via the bracket 2. A sun visor body 10 is rotatably mounted on the horizontal shaft portion 7 of the support shaft 5. The sun visor body 10 is arranged to be switched between a storage position along the ceiling surface of the vehicle compartment and a light shielding position along the windshield by being rotated around the axis of the horizontal shaft portion 7. . An extension plate 60 for extending the light blocking area is housed inside the sun visor body 10 so as to be able to be pulled out.

The sun visor body 10 is formed by blow molding.
1 and a peripheral wall portion 23 having a substantially semicircular arc section in cross section which integrally connects the two plate-shaped portions 20 and 21 continuously to the peripheral edges of the plate-shaped portions 20 and 21 to form a hollow shape. A bearing member 11 into which the horizontal shaft portion 7 of the support shaft 5 is rotatably inserted is fixedly provided inside one corner (the upper right portion in FIG. 4) of the sun visor body 10. Sun visor body 1
When blow molding 0, ribs 24 and 25 having a substantially U-shape are formed inside the sun visor body 10 so as to surround a total of three sides of the upper and lower ends of the expansion plate 60. (See FIG. 9). These ribs 24, 25
Is formed by opposing plate-shaped portions 20, 21 being pressed from their outer surfaces toward the hollow portion, and their inner ends are integrally connected. As a result, the strength of the sun visor body 10 is maintained at a required strength. Of the ribs 24 and 25, guide grooves 26 as guide portions for pulling out and guiding the expansion plate 60 are formed on the opposing surfaces of the upper and lower rib portions 24a and 25a, respectively.

As shown in FIG. 2, when the sun visor body 10 is blow-molded, the sun visor body 10 is provided inside the sun visor body 10 when the expansion plate 60 is pulled out to the drawing end position. The stopper portion 28 that engages with the locking portion 52 to prevent the coming off is integrally formed. Further, as shown in FIG. 4, the sun visor body 10 has a core shaft portion 13 of the support shaft 12 integrally formed on the same center line on an extension of the bearing hole (the horizontal shaft portion 7 of the support shaft 5) of the bearing member 11. Is formed. When blow molding the sun visor body 10, the peripheral wall 2 of the sun visor body 10 is blown.
A hollow bag-shaped protrusion 30 is integrally formed on one side of 3 (on the left side in FIG. 9). Then, after the sun visor body 10 is released from the pair of molds 70 and 71, the bag-shaped protrusion 30 is cut off by a cutter or the like, so that one side of the sun visor body 10 is connected to the outlet of the expansion plate 60. A corresponding opening 31 is formed.

That is, as shown in FIGS. 6 to 8, molding portions 72 and 73 corresponding to the sun visor body 10 are formed on the mold surfaces of a pair of molding dies 70 and 71 for blow molding, respectively. As shown in FIG. 8, ribs 2 are provided at predetermined positions of forming portions 72 and 73 of a pair of forming dies 70 and 71.
Protrusions 75 and 76 corresponding to 4 and 25 and a molded portion (not shown) corresponding to the core shaft 13 are formed, respectively. Further, as shown in FIG.
Formed portions 78 corresponding to the bag-shaped protruding portions 30 are formed at the ends of the formed portions 72 and 73, and a convex portion corresponding to the stopper portion 28 is provided at a predetermined position of the formed portion 72 of one forming die 70. 7
7 are formed. Then, as shown in FIG. 6, when the pair of molding dies 70 and 71 are in the mold open state, the cylindrical parison 10a made of a thermoplastic synthetic resin material is extruded between the pair of molding dies 70 and 71. . Thereafter, the nozzle 80 for blow molding is passed through the lower end opening of the parison 10a.
Is inserted. At this time, the bearing member 11 is previously set at a predetermined position on the outer periphery of the nozzle 80 so as to be able to be detached.

Thereafter, as shown in FIGS. 7 and 8, the pair of molding dies 70 and 71 are closed, and the parison 10a is air blown to form the sun visor body 10. After the sun visor body 10 is blow-molded, the nozzle 80 is pulled out from the bearing member 11 fixed inside the sun visor body 10, and the pair of molds 70, 71 are opened. The sun visor body 10 is removed from the opened mold. Then, as shown in FIG.
The bag-shaped protrusion 3 on one side of the peripheral wall 23 of the sun visor body 10
0 is cut by a cutter or the like along the cutting line 100, so that one side of the sun visor body 10 has an expansion plate 60
The opening 31 corresponding to the outlet of this is formed.

As described above, after the sun visor main body 10 is formed, the sun visor main body 10 is covered with the skin 8 made of a synthetic resin sheet, woven cloth or the like. Epidermis 8
The opening 3 on one side of the peripheral wall 23 of the sun visor body 10
1 and the portion corresponding to the core shaft portion 13 of the support shaft 12 are removed. Then, as shown in FIGS. 2 and 3, the mouth frame 40 is inserted into the opening 31 of the sun visor body 10 and attached. The mouth frame 40 is made of a synthetic resin, and has an outlet 4 corresponding to the cross-sectional shape of the expansion plate 60.
An outer frame part 42 having a frame shape and having a decorative property for closing the opening part 31 and an inner cylindrical part 44 inserted into the hollow part of the sun visor body 10 through the opening part 31 are integrally provided.

As shown in FIG. 3, an elastically deformable engaging claw 45 is provided on the inside of the outer frame portion 42 of the mouth frame body 40 so as to protrude therefrom. And the sun visor body 1
The engaging claw 45 is elastically engaged with the edge of the opening 31 based on the insertion operation of the inner cylindrical portion 44 into the opening 31 of the opening 31 so that the opening 31 is closed. Body 4
0 is attached. As shown in FIG. 3, the expansion plate 6 is provided on the inner wall of the inner cylinder 44 of the mouth frame 40.
A locking member 50 is attached to lock the extension plate 60 with the required withdrawal frictional force while locking the “0” at the extraction end position and the storage position. This locking member 50
Is made of a leaf spring material, and is fixed to the inner wall portion of the inner cylindrical portion 44 of the mouth frame body 40 in a cantilever manner at a fixing portion 51 at one end thereof. The locking member 50 has a substantially arc-shaped bent portion 52 substantially at the center of an elastically deformable extension portion extending from the fixed portion 51 toward the back. .

The sun visor body 10 has a mouth frame 40
The expansion plate 60 is retractably housed with respect to the outlet 41. The expansion plate 60 is formed of a synthetic resin material into a horizontally long rectangular flat plate. As shown in FIGS. 1 and 5, the extension plate 60 is formed with a protrusion 61 having a semicircular arc cross section on a total of three sides, that is, a draw-out end at one end and upper and lower edges. The upper and lower portions of the expansion plate 60 are slidably fitted into the guide grooves 26 in the sun visor body 10 by being inserted into the outlet 41 from the other end on the other side. As a result, the extension plate 60 is assembled to the sun visor body 10 so as to be able to be pulled out and pushed in. Further, at a portion near the far end (the other end) of the expansion plate 60, a root portion is integrally joined, and a tip portion has an upwardly inclined shape, and an elastically deformable retaining piece 65 is formed. I have. That is, when the expansion plate 60 is inserted into the inside of the sun visor body 10 from the outlet 41, the retaining piece 65 is elastically deformed and pushed down, and passes through the outlet 41 and the stopper portion 28 in order. Thereafter, when the expansion plate 60 is pulled out to the drawing end position, the retaining piece 65 is engaged with the stopper portion 28 so as to be able to be engaged and disengaged, thereby preventing the expansion plate 60 from coming off.

As shown in FIG. 3 and FIG.
0 at the upper side of the drawer side and the inner side,
A first locking portion 62 and a second locking portion 63 that are removably engaged with the locking portion 52 formed on the zero locking member 50 are formed respectively. The first locking portion 62 and the second locking portion 6
3 are each formed in a substantially concave arc. Then, as shown in FIG. 3, when the expansion plate 60 is pushed into the storage position where the expansion plate 60 is stored in the sun visor main body 10, the locking portion 52 of the locking member 50 is engaged with the first locking portion 62. The expansion plate 60 is held at the storage position by the engaging force. When the expansion plate 60 is pulled out to the sun visor main body 10 to the drawing end position, the second locking portion 63 is engaged with the locking portion 52 of the locking member 50, and the expansion plate 60 is moved by the engaging force. It is designed to be held at the drawer end position.

In this embodiment, the support shaft 12 is formed by mounting the outer shaft portion 14 to the core shaft portion 13 of the sun visor body 10 in a half-split state. Further, the horizontal shaft portion 7 of the support shaft 5 is inserted into a bearing hole of the bearing member 11 of the sun visor body 10, whereby the vehicle sun visor 1 is configured (see FIG. 4).

Vehicle sun visor 1 according to this embodiment
Is configured as described above. Therefore, the sun visor body 10 is pivotally operated around the axis of the horizontal axis portion 7 of the support shaft 5 to be disposed at the front light shielding position along the windshield, or the sun visor body 10 is moved from the front light shielding position to the vertical axis portion 6. When the light shielding area is extended in a state where the light shielding area is extended along the side glass by rotating around the axis, the extension plate 60 is attached to the sun visor body 10.
By pulling out the protrusion 61a on the extension end side of the extension plate 60 as a knob, the light-shielding area is extended by the extension of the extension plate 60. Also, the expansion plate 60
Is pulled out to the drawing end position, the retaining piece 65 of the expansion plate 60 comes into contact with the stopper portion 28 of the sun visor body 10, and further drawing out is restricted. For this reason, the extension plate 6
It is possible to prevent a problem that 0 is unexpectedly lost. When the extension plate 60 is pulled out to the extraction end position, the engagement portion 52 of the engagement member 50 engages with the second engagement portion 63 of the extension plate 60, and the engagement force causes the extension plate 60 to move to the extraction end position. Is held. For this reason, it is prevented that the extension board 60 is accidentally displaced toward the storage position.

By pushing the expansion plate 60 against the engaging force between the locking portion 52 of the locking member 50 and the second locking portion 63 of the expansion plate 60, the expansion plate 60 is pushed back to the storage position. Stored. When the expansion plate 60 is pushed into the storage position, the locking portion 52 of the locking member 50 engages with the first locking portion 62 of the expansion plate 60, and the engagement force causes the expansion plate 60 to move.
Is held in the storage position. For this reason, it is prevented that the extension plate 60 is accidentally displaced in the pull-out direction.

As described above, when the extension plate 60 is pulled out or pushed into the sun visor body 10, the upper and lower rib portions 24 in the sun visor body 10 are moved.
The extension plate 60 is pulled out or pushed in while being guided by the guide grooves 26 as guide portions formed on the opposing surfaces of the a and 25a. For this reason, the extension plate 60 is smoothly pulled out or pushed in without tilting in the vertical direction or the front-back direction. In particular, the sun visor body 1
0, and at the same time, of the ribs 24 and 25,
A guide groove 26 is formed on the opposing surfaces of the upper and lower rib portions 24a, 25a. For this reason, a dedicated guide member for guiding the extension board 60 to be pulled out or pushed in can be separately formed, and the labor for assembling the extension board 60 to the sun visor body 10 can be omitted, and the cost can be reduced accordingly.

Further, in this embodiment, simultaneously with the blow molding of the sun visor body 10, the ribs 24 having a substantially U-shape so as to surround a total of three sides of the upper, lower, and rear ends of the expansion plate 60. , 25 and these ribs 24, 2
By integrally connecting the inner ends of the sun visors 5, the strength of the sun visor body 10 can be maintained at a required strength. By forming the guide grooves 26 on the opposing surfaces of the upper and lower rib portions 24a, 25a of the ribs 24, 25, the function of pulling out and pushing in the expansion plate 60 is enhanced, and the expansion plate 60 is stably provided. I can guide you. Further, in this embodiment, at the same time as the blow molding of the sun visor body 10, the hollow bag-shaped protrusion 30 is integrally formed on one side of the peripheral wall 23 of the sun visor body 10, and after the mold is released, the bag-shaped protrusion 30 is formed. Is cut off with a cutter or the like, so that one side of the peripheral wall portion 23 of the sun visor body 10
The opening 31 corresponding to the outlet of the expansion plate 60 can be formed easily and accurately, and the productivity is excellent.

The present invention is not limited to the above embodiment. For example, inside the sun visor main body 10, a dedicated guide portion for pulling out and pushing in the extension plate 60 may be integrally formed. In addition, blow molding is performed without forming the bag-shaped protruding portion 30 on one side of the peripheral wall portion 23 of the sun visor main body 10, and thereafter, an opening 31 is formed on one side of the peripheral wall portion 23 of the sun visor main body 10 by punching or the like. May be.

[0023]

As described above, according to the present invention,
The extension plate for expanding the light shielding area can be pulled out and guided by the guide part, which is formed integrally inside the sun visor body, and it is possible to save the trouble of forming a dedicated guide member separately and assembling it to the sun visor body. , Just that much,
The number of parts and the number of assembling steps can be reduced, and costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vehicle sun visor according to an embodiment of the present invention, taken along line II of FIG.

FIG. 2 is a sectional view based on the line II-II in FIG.

FIG. 3 is a sectional view based on the line III-III of FIG. 4;

FIG. 4 is a perspective view showing the entire vehicle sun visor.

FIG. 5 is a front view showing the expansion plate.

FIG. 6 is an explanatory diagram showing a state in which a pair of blow molding dies corresponding to the sun visor main body are in a mold open state and a parison is extruded between these molds.

FIG. 7 is an explanatory view showing a state in which a pair of molding dies is closed and a parison is air blown to form a sun visor body.

FIG. 8 is an explanatory view showing a state in which a guide groove functioning as a guide portion of an expansion plate is formed on a rib formed inside the sun visor body.

FIG. 9 is a front view showing the sun visor body formed by blow molding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sun visor for vehicles 5 Support shaft 7 Horizontal shaft part 10 Sun visor main body 11 Bearing member 20, 21 Plate part 23 Peripheral wall part 24, 25 Rib 26 Guide groove (guide part) 28 Stopper part 31 Opening 40 Port frame 41 Exit Reference Signs List 50 locking member 60 expansion plate 65 retaining piece

Claims (4)

[Claims] 1. A sun visor for a vehicle, in which an expansion plate for expanding a light blocking area with respect to the inside of a sun visor body is retractably housed, wherein the sun visor body is formed in a hollow shape by blow molding, and the sun visor body is provided. On one side, a draw-out opening into which the expansion plate is inserted so as to be able to be pulled out is opened, and a guide portion for pulling out and guiding the expansion plate is integrally formed inside the sun visor body for a vehicle. Sun visor. 2. The sun visor according to claim 1, wherein the inside of the sun visor main body is engaged with a locking portion provided on the expansion plate when the expansion plate is pulled out to a drawing end position. A sun visor for a vehicle in which a stopper portion for preventing falling off is integrally formed. 3. A method of manufacturing a vehicle sun visor in which an expansion plate for expanding a light shielding area inside a sun visor body is retractably housed, comprising: an opposite plate portion; Forming a hollow sun visor main body having a peripheral wall portion that integrally joins a peripheral edge portion by blow molding; and, at the same time as the blow molding of the sun visor main body, forming a rib on at least one of the two plate-shaped portions; A method for manufacturing a sun visor for a vehicle, wherein a guide portion for guiding the extension plate is drawn out by the rib is formed inside the sun visor body. 4. The method for manufacturing a sun visor for a vehicle according to claim 3, wherein when the sun visor body is blow-molded, a bag-shaped protrusion is formed on one side of a peripheral wall portion of the sun visor body. A method for manufacturing a sun visor for a vehicle, wherein an opening corresponding to an outlet of the expansion plate is formed by cutting off a protruding portion.