JP2017190108A - Molded ceiling material for vehicles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molded ceiling material for vehicles that prevents the occurrence of wrinkles while improving rigidity around a sunroof opening, and is also light in weight and inexpensive.SOLUTION: Vehicle-width-direction both sides around a sunroof opening 2a on a cabin outer surface of a ceiling material body 2 include a first adhesive application layer 8 formed by the application of a hot-melt adhesive along the vehicle longitudinal direction while folding up and down in a zigzag manner.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a molded ceiling material for a vehicle provided on a vehicle interior side of a roof panel in a vehicle having a sunroof.

  Conventionally, on a vehicle interior side of a roof panel in a vehicle such as an automobile, a molded ceiling material for a vehicle having a panel-like ceiling material body facing the vehicle interior is disposed, and a sunroof is provided in the vehicle. In this case, an opening is formed at a position corresponding to the sunroof of the ceiling material body.

  By the way, since the width of the both sides in the vehicle width direction around the opening of the ceiling material body is narrow, the rigidity is lower than the other parts of the ceiling material body. Therefore, for example, when a molded ceiling material for a vehicle is transported, if an operator or work robot grips and transports both sides in the vehicle width direction around the opening of the ceiling material body, a large load is applied to the gripped portion. In the worst case, deformation and cracking may occur, and the molded ceiling material for a vehicle may become a defective product.

  In order to avoid this, for example, in Patent Document 1, resin reinforcing ribs extending in the vehicle front-rear direction are attached to both sides of the vehicle body in the vehicle width direction around the opening on the outer surface of the ceiling material body with a hot melt adhesive. Thus, the rigidity of the both sides in the vehicle width direction around the opening of the ceiling material body is enhanced by the reinforcing rib.

JP 2010-23694 A

  However, when the reinforcing ribs are attached with hot melt adhesive to both sides in the vehicle width direction around the opening of the ceiling material body as in Patent Document 1, generally, the ceiling material body made of urethane foam material, nonwoven fabric, or the like Since the thermal expansion coefficient is different from the reinforcing rib made of a resin material, wrinkles may occur in the ceiling material body depending on the use environment.

  Further, if the reinforcing ribs are attached over a wide range of the ceiling material main body in order to increase the rigidity, the entire molded ceiling material for the vehicle becomes heavy although the rigidity is increased. Furthermore, the work of attaching the reinforcing rib to the ceiling material body using a hot melt adhesive while forming the reinforcing rib with resin increases both the component cost and the manufacturing cost.

  The present invention has been made in view of such a point, and the object of the present invention is to prevent the formation of wrinkles while increasing the rigidity around the opening for the sunroof, and is lightweight and low-cost molded ceiling for vehicles. To provide materials.

  In order to achieve the above object, the present invention is characterized in that a hot melt adhesive layer is formed on the exterior surface of the ceiling material body on the passenger compartment.

  Specifically, in a molded ceiling material for a vehicle having a panel-shaped ceiling material body that is disposed on the vehicle interior side of a roof panel of a vehicle having a sunroof and that has an opening corresponding to the sunroof, A solution was taken.

  That is, in the first invention, the both sides in the vehicle width direction around the opening on the outer surface of the vehicle interior of the ceiling material body are along the vehicle front-rear direction or the vehicle width direction while folding the hot melt adhesive into a wave shape or zigzag. It has the adhesive application layer formed by apply | coating.

  According to a second aspect, in the first aspect, each folded portion of the adhesive application layer has a V shape that forms an acute angle in plan view.

  The third invention is characterized in that, in the second invention, it is shaped in a zigzag manner along the vehicle width direction.

  In the first invention, since the adhesive application layers are arranged in a well-balanced manner on both sides in the vehicle width direction around the opening on the exterior surface of the ceiling material body, the rigidity of the portion in all directions can be increased. In addition, in the vehicle width direction both sides around the opening on the outer surface of the vehicle interior of the ceiling material body, the portions without the adhesive coating layer are provided at predetermined intervals in the vehicle front-rear direction or the vehicle width direction. Since the portion of the thermal expansion coefficient different from the expansion coefficient is reduced and the portions are not biased, wrinkles are unlikely to occur in the ceiling material body. Furthermore, since only a minimum required amount of adhesive is used to increase the rigidity of both sides in the vehicle width direction around the opening of the ceiling material body, a reinforcing rib is prepared as in Patent Document 1 and the adhesive is used. Therefore, it is possible to obtain a light and low-cost molded ceiling material for vehicles.

  In the second invention, since the width of each folded portion of the adhesive application layer is wider than the other portions, for example, the adhesive application layer is placed around the opening of the ceiling material body at a location where the rigidity is desired to be higher than the other portions. By making each folded-back part correspond, the ceiling material main body can be made highly balanced with good balance.

  In the third aspect of the invention, since the adhesive coating layer has a portion that intersects the obtuse angle with the vehicle width direction, the parts that are particularly resistant to cracks in the vehicle width direction at both sides in the vehicle width direction around the opening in the ceiling material body. it can.

It is the perspective view which simplified the vehicle which concerns on Embodiment 1 of this invention. It is the top view which looked at the ceiling material main body of the molded ceiling material for vehicles which concerns on Embodiment 1 of this invention from the vehicle interior outer side. It is sectional drawing in the III-III line of FIG. FIG. 3 is a view corresponding to FIG. 2 according to Embodiment 2 of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.
Embodiment 1 of the Invention
1 to 3 show a vehicle 10 provided with a molded ceiling material 1 for a vehicle according to Embodiment 1 of the present invention. The vehicle 10 has a sunroof 10 a on the vehicle front side of the roof panel 9, and the molded ceiling material 1 for the vehicle is disposed so as to cover the entire region of the roof panel 9 on the vehicle interior side.

  As shown in FIG. 2, the molded ceiling material 1 for a vehicle includes a substantially rectangular panel-shaped ceiling material body 2, and a harness wire and a soundproof material (not shown) are provided on the roof panel 9 side of the ceiling material body 2. Attached with adhesive tape or adhesive.

  The both sides of the ceiling material body 2 in the vehicle width direction are inclined so as to be gradually positioned downward as approaching both ends in the vehicle width direction, and at a position corresponding to the sunroof 10a of the ceiling material body 2 in a plan view. A sunroof opening 2a having a substantially rectangular shape and extending in the vehicle width direction is formed.

  Further, a front lamp unit opening 2b having a rectangular shape in plan view is formed in the vehicle front side central portion of the sunroof opening 2a in the ceiling material body 2.

  Further, a rear lamp unit opening 2c having a rectangular shape in a plan view is formed in the vehicle rear side central portion of the sunroof opening 2a in the ceiling material body 2.

  As shown in FIG. 3, the ceiling material body 2 includes a urethane layer 3 made of rigid foamed urethane, a first reinforcing layer 4 made of glass fibers laminated on the interior side of the urethane layer 3, and the urethane layer. 3, a second reinforcing layer 5 made of glass fiber laminated on the outside of the vehicle interior, a skin layer 6 made of a nonwoven fabric affixed to the vehicle interior side of the first reinforcing layer 4, and the second reinforcing layer 5 And a back layer 7 made of a non-woven fabric attached to the outside of the passenger compartment.

  As shown in FIG. 2, as shown in FIG. 2, a hot-melt adhesive is used on both sides in the vehicle width direction around the sunroof opening 2 a on the vehicle exterior side surface of the ceiling material body 2 (surface outside the vehicle compartment of the back layer 7). One adhesive application layer 8 is formed.

  The first adhesive application layer 8 is formed by continuously applying a hot melt adhesive in a zigzag manner to the vehicle exterior side surface of the ceiling material body 2 in the vehicle width direction. .

  That is, the first adhesive application layer 8 has a shape that is zigzag folded along the vehicle width direction.

  Each folded portion 8a of the first adhesive application layer 8 has a V-shape that forms an acute angle in plan view, and the top of each folded portion 8a is the front edge of the sunroof opening 2a. And it is located on each extended line of the edge part of a vehicle rear side.

  Second adhesive application layers 11 made of hot melt adhesive are formed at the four corners of the ceiling material body 2 on the outer surface of the passenger compartment.

  The second adhesive coating layer 11 is continuously applied to the outer surface of the ceiling material body 2 on the outer side of the passenger compartment while the hot melt adhesive is repeatedly diffracted in a zigzag manner along each corner of the ceiling material body 2. It is formed by coating.

  The first and second adhesive coating layers 8 and 11 are formed on the pre-molded sheet in which the urethane layer 3, the first reinforcing layer 4, the second reinforcing layer 5, the skin layer 6 and the back layer 7 are laminated. It is formed by continuously applying using an adhesive application robot.

  In FIG. 3, the thickness of each layer of the ceiling material body 2 is exaggerated for convenience.

  Here, in order to increase the rigidity of the both sides in the vehicle width direction around the sunroof opening 2a of the ceiling material body 2, it is conceivable to apply a hot melt adhesive to the entire region of the outer surface of the passenger compartment. In such a case, the ceiling material body made of urethane foam or nonwoven fabric and the coating layer using the hot melt adhesive have different coefficients of thermal expansion, which may cause wrinkles in the ceiling material body depending on the usage environment. There is. Moreover, the problem that the weight of the molded ceiling material 1 for vehicles becomes heavy also arises.

  On the other hand, in Embodiment 1 of the present invention, although the first adhesive coating layer 8 made of hot melt adhesive is provided on both sides of the ceiling member body 2 around the sunroof opening 2a in the vehicle width direction, 1 Since the portions without the adhesive application layer 8 are provided at predetermined intervals in the vehicle width direction, the portion of the thermal expansion coefficient different from the thermal expansion coefficient of the ceiling material main body 2 is reduced and the ceiling material is not biased. The main body 2 is less likely to wrinkle.

  In addition, since only a minimum amount of hot melt adhesive is used to increase the rigidity of both sides in the vehicle width direction around the sunroof opening 2a of the ceiling material body 2, reinforcing ribs as in Patent Document 1 are used. There is no need to prepare and attach to the ceiling material body 2 with an adhesive, and the vehicle-made molded ceiling material 1 can be made lightweight and low in cost.

  And since the 1st adhesive application layer 8 is arrange | positioned with sufficient balance in the vehicle width direction both sides part around the opening part 2a for sunroof on the vehicle exterior outer surface of the ceiling material main body 2, the rigidity with respect to all the directions of the said part is improved. Can do.

  Further, each folded portion 8a of the first adhesive coating layer 8 has a V-shape that forms an acute angle in plan view, so the first adhesive coating layer of each folded portion 8a of the first adhesive coating layer 8 The width of 8 becomes wider than other portions. Therefore, for example, by balancing each folded portion 8a of the first adhesive application layer 8 around the sunroof opening 2a of the ceiling material body 2 where the rigidity is desired to be higher than other portions, the ceiling material body 2 is balanced. It can be well and highly rigid.

  Furthermore, since the first adhesive application layer 8 is formed by applying the hot melt adhesive in a zigzag manner along the vehicle width direction, the first adhesive application layer 8 intersects the vehicle width direction and an obtuse angle. The number of parts increases, and the parts that are particularly resistant to cracks in the vehicle width direction can be formed at both sides in the vehicle width direction around the sunroof opening 2a in the ceiling material body 2.

In addition, when the hot melt adhesive is applied to the ceiling material body 2, the hot melt adhesive is applied in a single stroke without interruption in the vehicle front-rear direction, so that the manufacturing time of the vehicle molded ceiling material 1 can be shortened.
<< Embodiment 2 of the Invention >>
FIG. 4 shows Embodiment 2 of the present invention. In the second embodiment, only the shape of the first adhesive application layer 8 is different from that of the first embodiment, and the others are the same as those of the first embodiment. Therefore, only the parts different from the first embodiment will be described in detail below.

  The first adhesive application layer 8 of the second embodiment is formed by continuously applying the hot melt adhesive in a zigzag manner to the vehicle exterior side surface of the ceiling material body 2 in the vehicle longitudinal direction. Has been.

  That is, each folded portion 8a of the first adhesive application layer 8 of the second embodiment has a V-shape that forms an acute angle in plan view, and the top of each folded portion 8a of the second embodiment has the above-described sunroof opening. It is the position which approached the edge part of the vehicle width direction both sides in the part 2a, or the edge part of the outer side of the ceiling material main body 2. FIG.

  As described above, according to the second embodiment of the present invention, there are many portions of the first adhesive coating layer 8 that intersect the obtuse angle with the vehicle front-rear direction, and in both sides of the ceiling material body 2 around the sunroof opening 2a in the vehicle width direction. In particular, it can be made a component that is strong against cracks in the vehicle longitudinal direction.

  In Embodiments 1 and 2 of the present invention, the hot melt adhesive is applied to the ceiling material body 2 while being folded back in a zigzag manner. .

  In the first and second embodiments of the present invention, one row of the first adhesive coating layer 8 is provided on both sides of the ceiling material body 2 around the sunroof opening 2a in the vehicle width direction. The first adhesive coating layer 8 may be provided.

  In the first and second embodiments of the present invention, the first adhesive application layer 8 is continuously applied in the vehicle front-rear direction or the vehicle width direction. You may make it form by apply | coating separately.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a molded ceiling material for a vehicle provided in a vehicle interior of the vehicle and a method for manufacturing the same.

DESCRIPTION OF SYMBOLS 1 Molded ceiling material for vehicles 2 Ceiling material main body 2a Opening part for sunroof 8 First adhesive application layer 9 Roof panel 10 Vehicle 10a Sunroof

Claims (3)

A molded ceiling material for a vehicle having a panel-like ceiling material body which is disposed on the vehicle interior side of a roof panel of a vehicle having a sunroof and has an opening corresponding to the sunroof,
The both sides in the vehicle width direction around the opening portion on the outer surface of the vehicle interior of the ceiling material body are formed by applying the hot melt adhesive along the vehicle front-rear direction or the vehicle width direction while folding back in a wavy or zigzag manner. A molded ceiling material for a vehicle having an agent coating layer. The molded ceiling member for a vehicle according to claim 1,
Each of the folded portions of the adhesive application layer has a V-shape that forms an acute angle in a plan view. The molded ceiling material for a vehicle according to claim 2,
The above-mentioned adhesive coating layer has a zigzag folded shape along the vehicle width direction.

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