JPH0375366B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates primarily to a method for attaching a bracket to a resin board as a base material for molded ceiling materials and door linings of automobiles. [Background of the Invention] As shown in Fig. 5, in an automobile molded ceiling,
A bracket 2 is driven into a molded ceiling base material 1 made of a resin board, a clip 3 is attached to the upper surface of the bracket 2, and the clip 3 is inserted into a mounting hole provided in a ceiling inner panel, so that the molded ceiling can be installed inside the ceiling. Mounted on a panel. [Prior Art] Conventionally, a bracket 2 is driven directly into a base material 1 as shown in FIG. [Problems to be Solved by the Invention] However, in the above prior art, the legs 21, 21 of the bracket 2 reach the surface of the base material 1 to form swollen parts 11, 11, and the swollen parts 11, 11 are Since it appears on the surface through the covering material 4, it causes a big problem in terms of appearance. If the bracket 2 is driven shallowly so that the swollen parts 11, 11 are not formed, the pull-out strength of the bracket 2 will be reduced. [Means for solving the problem] A lower layer fleece 1C in which fibers and a binder are mixed and entangled is placed on the lower mold 32 surface of a heating press mold 3 consisting of an upper mold 31 and a lower mold 32. A bottomed bracket 2 with flanges 24, 24 extended from the lower edges on both sides is placed at a predetermined position on the upper surface of the lower layer fleece 1C, and furthermore, it has the same configuration as the lower layer fleece 1C and corresponds to the bracket placement position of the lower layer fleece 1C. Upper layer fleece 1D with bracket holes 11D at the positions
The bracket 2 is fitted into the bracket hole 11D, and the polymer of the lower layer fleece 1C and the upper layer fleece 1D thus obtained is placed between the upper mold 31 and the lower mold 32 of the hot pressing mold. The present invention provides a method for attaching a bracket characterized in that the lower layer fleece 1C and the upper layer fleece 1D are integrated into a resin board 1 by hot pressing. [Operation] The upper layer fleece 1D is placed on the lower layer fleece 1C with the bracket 2 placed in a predetermined position, and the bracket 2 is fitted into the bracket hole 11D of the fleece, and the lower layer fleece thus obtained is 1C
When a polymer of the upper layer fleece 1D and the upper layer fleece 1D is hot-pressed, the binder of each fleece 1C and 1D binds the fibers to form an integrated resin board 1 . At this time, since the bracket 2 has a bottom, the hot press is also applied to the lower layer fleece 1C directly under the bracket 2 . And the flange portions 24 , 2 of the bracket 2
4 is embedded and engaged inside the resin board 1 . [Effects of the Invention] Therefore, in the present invention, no bulges due to the bracket are formed on the surface of the base material made of resin board, and the pull-out strength of the bracket is greatly improved. [Example] The present invention will be described with reference to an example shown in FIGS.
2, and bracket holes 31A, 31A are provided at predetermined positions on the mold surface of the upper mold 31. A lower layer fleece 1C is placed on the lower mold 32 of the heating press mold 3.
is placed. The lower layer fleece 1C is made of fibers and a thermosetting synthetic resin such as phenolic resin, melamine resin, or urea resin, or the thermosetting synthetic resin and thermoplastic synthetic resin such as polyethylene, polypropylene, or ethylene-vinyl acetate copolymer. It is formed by mixing and entangling a binder consisting of a mixture or the like. As shown in FIG. 2, a bracket 2 is placed at a predetermined position on the upper surface of the lower layer fleece 1C. The bracket 2 includes an upper surface portion 21 in which a clip attachment hole 22A is provided, side portions 22, 22 hanging down from both edges of the upper surface portion 21, and a bottom surface extending between the lower edges of the side portions 22, 22. It consists of a portion 23 and flange portions 24 extending from both edges of the bottom portion 23 . After placing the bracket 2 on the upper surface of the lower layer fleece 1C, the upper layer fleece 1D is placed on top of it. The upper layer fleece 1D has the same structure as the lower layer fleece 1C, and a bracket hole 11D is provided at a position corresponding to the bracket placement position on the upper surface of the lower layer fleece 1C. Then, the bracket 2 placed on the upper surface of the lower layer fleece 1C is fitted into the bracket hole 11D of the upper layer fleece 1D as shown in FIG. Next, the polymerized product of the lower layer fleece 1C and the upper layer fleece 1D is hot pressed using a heating press die 3 as shown in FIG. In this case, if the binder is phenolic resin, the pressing temperature is 150 to 200.
℃, and the press pressure is about 2 to 5 kg/cm ² . In this way, the binder in the fleeces 1C, 1D hardens and binds the fibers to form the lower and upper resin boards 1A, 1B, which are pressed together and integrated. This will be resin board 1. Therefore, the bottom part 23 of the bracket 2
The flange portions 24, 24 of the lower resin board 1
Sandwiched between A and the upper resin board 1B,
Even if a pulling force is applied to the bracket 2, the bracket 2 resists the pulling force due to the engagement between the flanges 24, 24 and the resin board 1B. Although the upper part of the bracket 2 protrudes from the upper surface of the upper resin board 1B, the upper part of the bracket 2 is accommodated in the bracket holes 31A, 31A provided in the upper mold 31 surface of the heating press mold 3. In the above embodiment, the resin board 1A and the resin board 1B were laminated and integrated without adhesive, but if desired, polyethylene, polypropylene,
An adhesive such as ethylene-vinyl acetate copolymer or polyamide may be used. Further, if desired, a reinforcing agent such as cyanoacrylate, urethane prepolymer, unsaturated polyester, epoxy resin, or acrylic resin may be injected and hardened onto the periphery of the bracket 2 of the upper resin board 1B.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a front cross-sectional view of a heating press type, Figure 2 being a perspective view of a bracket, and Figure 3 being an explanatory diagram of a fleece polymerized state. , FIG. 4 is an explanatory diagram of the hot press state,
FIG. 5 is an explanatory diagram of mounting the bracket, and FIG. 6 is a sectional view of a conventional example. In the figure, 1A, 1B...resin board, 1C...lower layer fleece, 1D...upper layer fleece, 2...bracket, 3...heat pressing mold, 11D...bracket hole, 2
4...Flange portion, 31...Upper mold, 32...Lower mold.

Claims (1)

[Claims] 1 Place a lower layer fleece in which fibers and a binder are mixed and entangled on the lower mold surface of a hot press mold consisting of an upper mold and a lower mold, and insert flanges from the lower edges of both sides at predetermined positions on the upper surface of the lower layer fleece. A bottomed bracket is placed on top of the bracket, and an upper layer fleece having the same structure as the lower layer fleece and having a bracket hole at a position corresponding to the bracket placement position of the lower layer fleece is placed on top of it, and the upper layer fleece is placed in the bracket hole. Fit the bracket,
The polymerized product of the lower layer fleece and the upper layer fleece thus obtained is hot-pressed using the upper and lower molds of the heating press mold, thereby integrating the lower layer fleece and the upper layer fleece into a resin board. How to install the bracket.