JP2009269515A - Light shielding plate of automotive sun visor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light shielding plate of an automotive sun visor capable of simultaneously satisfying the relationship of the friction coefficient between a plate-like base material and a back side of a surface material. <P>SOLUTION: In the light shielding plate of the automotive sun visor with a resin-made plate-like base material covered with a surface material, an outer surface of the plate-like base material comprises a smooth surface having a high friction coefficient to a back side of the surface material, and a coarsely worked surface having a low friction coefficient to the back side of the surface material. The plate-like base material has a substantially rectangular contour. The smooth surface is formed on the outer surface on the center side of the contour of the plate-like base material, and the coarsely worked surface is formed on the outer surface on the peripheral side of the contour of the plate-like base material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a light shielding plate for an automobile sun visor.

  Conventionally, a sun visor as a light-shielding device has been installed in the passenger compartment of an automobile, and the occupant is exposed to sunlight or other vehicle lights that are inserted from the front window side or side window side using the sun visor. Can be prevented from dazzling.

  As a general sun visor configuration, a shading plate having a predetermined area is pivotally supported on a shaft suspended from a ceiling at a position in front of a passenger seat.

The shaft is substantially L-shaped with a vertical part hanging from the ceiling and a horizontal part bent at an angle of about 90 degrees from the vertical part, and the shading plate can be rotated around the shaft axis beyond the horizontal part of the shaft. It is possible to change the arrangement of the light shielding plate between the storage position (upper, position along the ceiling) and the use position (lower, between the occupant and the front window) by rotating the light shielding plate relative to the shaft. It is configured.
The shaft is also configured such that a vertical portion hanging from the ceiling is rotatable about an axis, and the shading plate at the use position can be rotated from the front window direction to the side window direction.

  The light shielding plate has a substantially rectangular outline with a size of about 400 mm in the width direction and about 200 mm in the height direction, and a thickness of about 20 mm is a common size, and an opening is formed at one corner of the light shielding plate. And the front-end | tip of the horizontal part of the said shaft is put in the inside of a light-shielding plate, and a light-shielding plate is rotatably supported by a shaft.

  The light shielding plate is generally composed of a rigid plate-like base material for function and operability, and a construction in which the plate-like base material is covered with a skin material is generally used for design.

  As the structure of the plate-like base material, a combination of a pair of resin-molded shell-like half cores and the inside being formed into a cavity has the advantage of reducing the weight and increasing the apparent cross-sectional area. .

  In addition, as a skin material for covering a plate-like substrate, design properties, softness of touch when a passenger's hand touches, and flexibility are required. As a preferable example, a slab urethane foam is laminated on the back surface of a knit. The laminated skin material is generally used.

As a method of coating the skin material to the plate-like base material, a part of the skin material is left in the opening and the bag is sewn, from the opening left without sewing, the plate-like base material is inserted into the skin material, Then, the light shielding board which coat | covered the plate-shaped base material with the skin material can be obtained by closing the said opening part by sewing or welding. For example, Japanese Patent Laid-Open No. 64-78922 has a typical disclosure.
In addition, even after the skin material opening is closed by sewing or welding, some difference in appearance from the general part is inevitable, so the position of the opening on the skin material should take into account the usage of the sun visor. Thus, it is formed in a position that is as difficult as possible to be seen from the occupant, and the size of the opening also forms the minimum opening necessary to insert the base material into the plate-like base material.

After covering the plate-shaped substrate with the skin material, cut out a part of the skin material and insert the shaft that supports the light shielding plate, and attach accessories such as vanity mirrors and ticket holders to the light shielding plate. Finishing as an automobile sun visor by applying the processing applied to the surface.
JP-A-64-78922

  In the configuration in which the plate-like base material is inserted into the inside of the skin material from the opening portion of the skin material that has been sewn as in the above prior art, there are the following problems.

  When the occupant operates the automobile sun visor (when moving the shading plate from the storage position to the use position or vice versa), it is assumed that the shading plate is operated by the occupant grasping an unspecified part. Is done.

  At this time, in the light shielding plate of this structure, the plate-like base material is only encapsulated inside the skin material, and the skin material and the plate-like base material are not directly bonded, so depending on how the occupant grasps The skin material may be slightly displaced along the surface with respect to the plate-like plate-like substrate.

Even if this slight deviation occurs, it will return as soon as the occupant's hand is released and the action of the force disappears due to the shape and flexibility of the skin material. If it is felt as, it is not preferable because a high-class feeling as an interior material is impaired.
In order to avoid this, it can be said that it is necessary to increase the friction coefficient between the plate-like base material and the back surface of the skin material as much as possible so that the surface material does not easily shift along the surface with respect to the plate-like base material.

  On the other hand, when the manufacturing process (FIG. 5) of putting a plate-like base material into the inside of the skin material is considered from the opening of the bag-sewed skin material, if the friction coefficient between the plate-like base material and the skin material back surface is large, The sticky base material sticks to the back surface of the skin material, and it becomes difficult to smoothly put the plate-like base material into the skin material, resulting in a problem that the working time is prolonged and the productivity is lowered.

  In order to avoid this, it can be said that it is advantageous to make the friction coefficient between the plate-like substrate and the back surface of the skin material as small as possible.

  This invention provides the structure of the light-shielding plate of the sun visor for motor vehicles which can satisfy | fill simultaneously two conflicting requirements as mentioned above.

  Means of the present invention for solving the problem is a light shielding plate for an automobile sun visor, wherein a resinous plate-like base material is coated with a skin material, and the outer surface of the plate-like base material is the skin The light shielding plate of the sun visor for automobiles comprises a smooth surface having a high friction coefficient with respect to the back surface of the material and a rough surface having a low friction coefficient with respect to the back surface of the skin material.

By forming both a smooth surface with a high friction coefficient for the back surface of the skin material and a rough surface with a low friction coefficient for the back surface of the skin material on the surface of the plate-like substrate of the sun visor,
When putting the plate-shaped substrate into the skin material from the opening of the skin material, make sure that the plate-shaped substrate does not stick to the back surface of the skin material using the rough surface. The processing to put becomes easy.

  On the other hand, in the product state after the plate-shaped substrate is coated with the skin material, when the occupant grasps the light-shielding plate for the operation of the light-shielding plate, the skin material is displaced from the plate-shaped substrate by the smooth surface. It is possible to provide a configuration that is difficult to produce.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 each relate to an automobile sun visor of the present invention. FIG. 1 shows an external view of the automobile sun visor 1 of the present invention. FIG. 2 is included in the automobile sun visor 1 of FIG. The external view of the plate-shaped base material 20 is shown.
FIG. 3 is a cross-sectional view taken along line AA in FIG.

  An automobile sun visor 1 shown in FIG. 1 as an object of the present invention includes, as main components, a light shielding plate 10, a shaft 11 that pivotally supports the light shielding plate at corners, and the shaft 11 as a vehicle body. And a knob 13 for engaging and supporting the light-shielding plate with the vehicle body at a position away from the mounting portion of the shaft. Further, the surface of the light shielding plate 10 is covered with a skin material 30.

As the skin material 30, a material having a design property and a softness of moderate tactile sensation is selected, and the most preferable example is the back surface of a raised knit (thickness 0.5 mm, basis weight 180 g / m ² ). A thin slab urethane (thickness 2.0 mm, density 0.03 g / cm ³ ) is selected.

As shown in FIG. 2, the light shielding plate-like substrate 20 has a substantially rectangular outline in plan view, and is formed by injection molding a thermoplastic resin such as polypropylene resin.
A shaft insertion portion 22 and a knob attachment portion 23 are formed on a part of the outline of the plate-like substrate 20.

The plate-like substrate 20 is preferably formed by combining two similar shell-like half cores as shown in FIG. 3 as a cross-sectional view taken along line AA of the light shielding plate 10 of FIG.
The two half cores 201 and 202 have a high peripheral edge, a slight curve on the general surface, and a shallow shell as a whole (plate thickness of 1.0 to 1.5 mm). The base material 20 having the hollow space 24 (space 15 to 20 mm) in the interior can be formed by facing the inner sides of the 202 so that the concave side faces the inner surface.

As an advantage of the base material in which the hollow space 24 is formed on the inside, it is possible to make the base material difficult to be deformed with respect to the bending force while being lightweight by increasing the apparent sectional area. Further, the hollow space 24 receives the tip portion of the shaft that pivotally supports the light shielding plate, and includes a spring clip for imparting moderate rotation to this, wiring for various accessories, etc. (all not shown). Can be held.
Further, a plurality of inner ribs 25 can be formed at arbitrary positions on the concave side of the half cores 201 and 202, and used for mutual joining and reinforcement of the base materials.
The outer surface of the plate-like substrate 20 is completely covered with the skin material 30.

  As shown in FIG. 2, in this invention, the smooth surface 21a and the rough processing surface 21b are selectively formed in the outer surface 21 of the plate-shaped base material 20. As shown in FIG. Here, the smooth surface 21 a has a relatively high friction coefficient with respect to the back surface of the skin material 30, and the roughened surface 21 b has a relatively low friction coefficient with respect to the back surface of the skin material 30.

The preferred range for the smooth surface 21a of the plate-like substrate 20 is the center side of the outline of the plate-like substrate, while the preferred range for the roughened surface 21b is the peripheral side of the outline of the plate-like substrate. The boundary is suitably in the range of 20 to 100 mm from the contour of the plate-like substrate.
3, the smooth surface 21a and the roughened surface 21b are substantially on the front and back of the plate-like substrate 20, as indicated by the reference symbol P (smooth surface region) and the reference symbol R (roughly processed surface region). Formed on the subject.

  As typical combinations of the smooth surface 21a and the roughened surface 21b, there are typically the following two types.

  (1) The smooth surface 21a in which the outer surface 21 of the plate-like substrate 20 is in a non-pigmented state where there is no change in unevenness, or is processed with a high coefficient of friction with respect to the back surface of the skin material 30 with patterning with unevenness on average. And a roughened surface 21b in which the average surface roughness of the outer surface 21 of the plate-like substrate 20 is high and the friction coefficient with respect to the back surface of the skin material 30 is low.

  In this case, the effect of increasing the coefficient of friction of the smooth surface 21a with respect to the back surface of the skin material 30 is that the actual contact area between the smooth surface 21a and the back surface of the skin material 30 is increased, and thus the tendency of the two to be in close contact with each other increases. On the other hand, the effect of lowering the coefficient of friction of the roughened surface 21b with respect to the back surface of the skin material 30 is that the actual contact area between the roughened surface 21b and the back surface of the skin material is reduced, and therefore the tendency of the two to be in close contact is reduced. by.

  (2) A smooth surface 21a in which the outer surface 21 of the plate-like base material 20 is processed in a non-printed state where there is no unevenness or a discontinuous dot-like pattern processing with a high friction coefficient with respect to the back surface of the skin material 30; A combination of roughened surfaces 21b having a continuous line pattern on the outer surface 21 of the substrate 20 and a low friction coefficient with respect to the back surface of the skin material 30.

As a function of increasing the friction coefficient with respect to the back surface of the skin material 30 of the smooth surface 21a due to the discontinuous dot pattern processing, the soft slab urethane foam on the back surface of the skin material is bent, and the gap between the spot-shaped constrictions. This is because the actual contact area between the smooth surface 21a and the back surface of the skin material 30 is increased, and the horizontal movement of the skin material 30 with respect to the plate-like substrate 20 is hindered by the unevenness of the aperture.
On the other hand, as a function of reducing the friction coefficient of the rough surface 21b against the back surface of the skin material 30 by continuous linear pattern processing, the back surface of the skin material is supported between the linear patterns. As a result, the actual contact area between the rough-processed surface 21b and the back surface of the skin material 30 is reduced, and the unevenness of the aperture hinders the horizontal movement of the skin material 30 with respect to the plate-like substrate 20. By not doing.

The operation of the second combination will be described with reference to FIG.
FIG. 4 (a) shows a partial plan view of the outer surface (smooth surface 21a) of the plate-like base material 20 and a cross-sectional view taken along the line XX thereof, which has been subjected to pattern processing with sparse unevenness on average. However, in the plan view, for convenience of explanation, the skin material 30 is omitted).
FIG. 4B shows a partial plan view of the outer surface (roughly processed surface 21b) of the plate-like substrate 20 subjected to continuous linear pattern processing, and a YY sectional view thereof. . (However, in the plan view, the skin material 30 is omitted for convenience of explanation)

As shown in FIG. 4 (a), the back surface of the raised knit 30a with respect to the smooth surface 21a on which the frustoconical pattern protrusions 27 are formed at a relatively wide interval from the general surface 26 of the plate-like substrate 20. When the most common skin material 30 lined with the slab urethane 30b is overlapped, the slab urethane foam 30b is an elastic material. The contact with the general surface 26 results in an increase in the actual contact area between the two surfaces, which increases the friction coefficient.
In the above state, when the skin material 30 is slid relative to the surface of the plate-like base material 20 in the horizontal direction, the slab urethane foam 30b interferes with the pattern protrusions 27, and this also causes friction. It becomes a factor which raises a coefficient.

Further, as shown in FIG. 4B, linear pattern protrusions 28 that are continuous at relatively narrow intervals are formed from the general surface 26 of the plate-like substrate 20 (that is, the general surface 26 is linear). When the most common skin material 30 lined with slab urethane 30b is overlapped on the back surface of the raised knit 30a with respect to the smooth surface 21a (enclosed by the crest projections), the slab urethane foam 30b is formed of the linear crest projections 28. Although it is somewhat bent in the middle, there is no contact with the general surface 26 surrounded by the linear pattern projections 28, leaving a large gap S, resulting in a reduction in the actual contact area between the two and a reduction in the coefficient of friction. It has become.
In the above state, when the skin material 30 is slid relative to the surface of the plate-like base material 20 in the horizontal direction, the slab urethane foam 30b is less likely to interfere with the pattern protrusions 26. It will not be a factor that increases the coefficient of friction.

In FIG. 5, the coating | coated process of the skin material 30 to the plate-shaped base material 20 is shown.
The skin material 30 is partly sewn with a bag left as an opening 31. As the material for the skin material, a material in which a thin layer 30b of slab urethane is backed and laminated on the back surface of the flexible knitted skin material 30a for cushioning is most suitable.
The opening 31 is formed at a position that becomes an upper edge that is as difficult as possible to be seen by the occupant in consideration of the usage of the sun visor. The size of the opening 31 is the minimum opening necessary for inserting the plate-like base material 20 and is larger in the range of 10 to 30% than the short side of the substantially rectangular outline of the plate-like base material 20. Is suitable.

As shown in FIGS. 5A to 5E, the plate-like base material 20 is inserted into the inside of the skin material 30 that is sewed from the opening 31 in order, and finally, the plate-like base material 20 The entire outer surface is encapsulated in the skin material 30 and then the opening 31 is closed, so that the plate-like substrate 20 is completely covered with the skin material 30.
In this step, the peripheral side of the outline of the plate-like substrate 20 is always in strong contact with the back surface of the skin material 30 (particularly, the steps (a) to (c)). It can be seen that unless the coefficient of friction between the front surface and the back surface of the skin material is decreased, it is difficult to cover the plate material 20 with the skin material 30.
On the other hand, the outer surface on the center side of the contour of the plate-like substrate 20 does not have a very high contact pressure with the back surface of the skin material 30 during the process. There is no significant effect on gender.

The external view of the sun visor for motor vehicles of this invention is shown. The external view of the plate-shaped base material of the sun visor for motor vehicles of this invention is shown. FIG. 3 is a sectional view taken along line AA in FIG. 2. Explanatory drawing of aperture stop. The coating process of the skin material to a base material is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sun visor for motor vehicles 10 Light-shielding plate 11 Shaft 12 Bracket 13 Knob 20 Plate-shaped base material 21 Outer surface 21a Smooth surface (base material center side)
21b Roughly processed surface (side around substrate)
22 Shaft insertion part 23 Knob attachment part 24 Hollow space 25 Inner rib 201, 202 Shell-shaped half core 30 Skin material 31 Opening part of skin material

Claims (4)

  A light shielding plate for an automobile sun visor, which is made by coating a resinous plate-like base material with a skin material, and the outer surface of the plate-like base material has a smooth surface with a high coefficient of friction against the back surface of the skin material, A shading plate for an automobile sun visor, characterized by comprising a roughened surface having a low coefficient of friction with respect to the back surface of the skin material.   The plate-like substrate has a substantially rectangular outline, the smooth surface is formed on an outer surface on the center side of the outline of the plate-like substrate, and the roughened surface is an outline of the plate-like substrate. The light shielding plate for an automobile sun visor according to claim 1, wherein the light shielding plate is formed on an outer surface on the peripheral side of the vehicle.   2. The smooth surface of the plate-like substrate is formed with no pattern or a sparse pattern, and the rough surface of the plate-like substrate is formed with a dense pattern. A light shielding plate for an automobile sun visor as described in 1.   The smooth surface of the plate-shaped substrate is formed with no pattern or discontinuous dot pattern processing, and the rough surface of the plate-shaped substrate is formed with continuous line pattern processing. The light-shielding plate of the sun visor for motor vehicles of Claim 1 characterized by these.