JPS6348782Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door used for storage cases, furniture, etc.

When decorative steel plates are used for doors of storage compartments, furniture, etc., the horizontal reinforcing ribs are bonded with adhesive to prevent spot welding pressure marks from appearing on the surface of the door panel. However, when using adhesive, it is necessary to remove dirt and oil stains from the contact surface between the door panel and each reinforcing bone before applying the adhesive to the entire contact surface.
The work is time-consuming and cannot be completed in a short time. Furthermore, the adhesive strength is weak despite the large contact area, and the variation in adhesive strength is large, resulting in the inconvenience of unstable product quality.

The object of the present invention is to provide a door for use in storage containers, furniture, etc. that can eliminate the above-mentioned deficiencies.

To explain the present invention in relation to a crosset door used for storage, etc., a door panel 1 and first, second, and third reinforcing ribs 2, 3, and 4 arranged laterally on the back side of the door panel 1 are made of vinyl chloride or other materials on the back side. The door panel 1 and each reinforcing frame 2, 3, 4 are made of a decorative steel plate coated with synthetic resin films 5, 5'.
The synthetic resin films 5 and 5' are fused together at the bonding surface using high-frequency vibrations or other energy applied from the outside. In this embodiment, the left and right ends of a door panel 1 made of decorative steel plate are bent into a square shape to form longitudinal reinforcing parts 6 and 7, and horizontal reinforcing ribs 2 are formed between both reinforcing parts 6 and 7. ，
Insert 3 and 4 so that both ends are in contact. To attach the reinforcing ribs 2, 3, and 4, place the door panel 1 on the pedestal 8 with the synthetic resin film 5 facing upward, and attach the reinforcing ribs 2, 3, and 4 to the joints with the door panel 1, facing outward. Formed bent flange surface 2
a, 3a, 4a, press the tool horn 9 of the ultrasonic plastic welder, and the synthetic resin film directly below the tool horn 9 is
This is done by melting only parts 5 and 5' and fusing them together. Since the fusion strength is significantly greater than the adhesive strength, each of the reinforcing bones 2, 3, and 4 can be sufficiently joined by simply fusion-bonding each of the reinforcing bones 2, 3, and 4 at several spots in the length direction. 1st
Door mounting members 10 and 11 that protrude outward from both upper and lower ends of the door panel 1 are fixed to the reinforcing bones 2 and the third reinforcing bones 4, respectively. Reference numeral 12 denotes a hinge attached between the reinforcing parts 6 and 7 of the door to be folded.

In the above embodiment, a door having a foldable structure has been described, but it goes without saying that the present invention can also be applied to swinging doors of furniture and the like.

According to the present invention, even if the bonding surface between the door panel and each reinforcing bone is contaminated with liquid or powder, it can be shaken off using high-frequency vibrations such as ultrasonic waves, and the bond can be broken. Since it can be performed by fusing extremely limited joint surfaces, it not only eliminates the need for pretreatment like when using adhesives, but also allows the work to be performed using simple procedures and an extremely short amount of time. It can be terminated. Furthermore, the fusion strength is strong and no heat is generated except for the fused parts of the synthetic resin film, so it has exceptional effects such as keeping the surface of the door panel beautiful and stabilizing the quality of the product.

[Brief explanation of the drawing]

Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a vertical sectional view of the same, Fig. 3 is a cross-sectional view of Fig. 1, and Fig. 4 is a sectional view of the embodiment of the present invention.
The figure is an explanatory view showing the state at the time of fusion bonding. DESCRIPTION OF SYMBOLS 1... Door panel, 2... First reinforcing bone, 3... Second reinforcing bone, 4... Third reinforcing bone, 2a, 3a, 4a... Bending flange surface of each reinforcing bone, 5, 5'... Synthetic resin film, 6, 7...Reinforcement part.

Claims (1)

[Claim for Utility Model Registration] A door panel made of decorative steel plate whose inner surface is coated with a synthetic resin film has both ends in the width direction bent inward to form a square-shaped reinforcing part, and between the reinforcing parts at both ends, The inner surface is coated with a synthetic resin film, and the required number of reinforcing ribs made of decorative steel plates with a U-shaped cross section and outward facing flange surfaces are inserted laterally, and the door panel and each reinforcing bone are made of a polymerized composite material. A door used for storage, furniture, etc., characterized by a resin film surface that is fused.