JPH0131907Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a door decorative frame fixing device for a door having a heat insulating wall inside the door body, such as a refrigerator door.

[Technical background of the invention]

For example, in refrigerator doors and the like, a plastic decorative frame is attached to the periphery of the door body to improve the design and protect the door from collisions with the human body or other objects. Conventionally, when attaching a decorative frame to the door body, the boss is integrated with the plastic frame by welding, and after passing the boss through the through hole in the door body, it is crushed while applying heat to open the door. It was configured to be fixed to the main body.

[Problems with background technology]

However, with this conventional structure, dedicated machines were required for the process of welding the boss to the frame and the process of crushing the boss with heat, resulting in a large number of processes and was troublesome.

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to eliminate the need for a special machine for welding or crushing bosses, reduce the number of assembly steps, and simplify the work. To provide a fixing device for a decorative door frame, which allows the front edge of the decorative frame to be tightly attached without any gaps and to securely fix the decorative frame.

[Summary of the idea]

The present invention has a door body that has an insertion hole on the front edge and a convex part on the rear edge, and has a U-shaped cross section with curved parts on the front and rear edges. A plastic decorative frame is provided on the outer surface of the periphery of the door body, and is integrally molded and protrudes from the front edge of the decorative frame so that when the decorative frame is inserted into the door body, An insertion leg is provided that is inserted into the door main body through the insertion hole and comes into contact with the inner surface of the door main body, and when the decorative frame is inserted into the door main body, an insertion leg is provided at a curved portion of the rear edge of the decorative frame. A concave portion that engages with a convex portion of the door body is provided, and the insertion leg is crimped and fixed to the inner surface of the door body by a heat insulating wall made of a foamed heat insulating material filled inside the door body. It is.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a flat hollow box-shaped door body made of, for example, a steel plate, and slit-shaped insertion holes 2 are arranged in rows at predetermined intervals on the peripheral edge of the front face 1a. Reference numeral 3 denotes a decorative frame manufactured by integrally molding plastic, for example, and the frame portion 4 has a substantially U-shaped cross section.
Band-shaped insertion legs 5 are integrally molded on the inner surface of the curved portion 4a formed at the front edge of the curved portion 4a with a predetermined interval from each other. It is oriented parallel to the inner wall 4b of the frame portion 4 with a slight gap therebetween.

Thus, the decorative frame 3 is attached to the peripheral edge of the door main body 1 by inserting the insertion legs 5 into the insertion holes 2, and the inner wall 4b of the frame 4 is brought into contact with the peripheral wall 1b of the door main body 1, and the decorative frame 3 is bent. The part 4a is brought into contact with the front part 1a of the door body 1, and the insertion leg 5 is attached to the peripheral wall 1b by the elasticity of the plastic.
is in contact with the inner surface of On the other hand, a concave portion 4d is formed on the inner edge of the curved portion 4c on the rear side of the frame portion 4, and a convex portion 1d provided on the flange 1c of the door body 1 when installed.
The curved portion 4a of the front edge portion is brought into close contact with the front surface portion 1a. Reference numeral 6 denotes a door inner plate that is attached to the inner surface of the door body 1. After this is attached, a stock solution of foam insulation material such as foamed urethane is injected into the door body 1 and foamed and solidified to form the insulation wall 7. The insertion legs 5 of the decorative frame 3 are crimped and fixed to the inner wall 4b of the door body 1 by the pressure and adhesive force of the heat insulating wall 7 when foaming.

According to the above configuration, the decorative frame 3 can be inserted into the door body 1 by simply inserting the insertion leg 5 integrally molded into the decorative frame 3 into the insertion hole 2 and engaging the concave portion 4d with the convex portion 1d.
Since the boss is attached to the base, the conventional steps of welding and crushing the boss are not required, which simplifies the work, and also eliminates the need for special machines required for these steps. By engaging the concave portion 4d with the convex portion 1d, the curved portion 4a of the front edge portion is brought into close contact with the front portion 1a of the door body 1. Therefore, manufacturing errors in the decorative frame 3 and the door body 1 can be avoided. is absorbed, and the curved part 4a becomes the front part 1
There is no gap between A and A. In addition, since the insertion legs 5 are crimped and fixed to the inner surface 1b of the door body 1 by using the pressure generated when the heat insulating wall 7 formed inside the door body 1 is foamed, the decorative frame 3 is fixed to the door body 1. 1 is securely attached.

In addition, when forming the insertion leg 5 wide, the first
The decorative frame 3 can also be formed by forming a long piece with the cross-sectional shape shown in the figure by extrusion processing, and then cutting off the portion that does not correspond to the insertion legs 5. It is possible to reduce the manufacturing cost by forming it by using the above method.

[Effect of idea]

As is clear from the above description, the present invention includes a door body having an insertion hole on the front peripheral edge and a protrusion on the rear peripheral edge, and curved parts on the front and rear edges. A decorative frame made of plastic is provided which is formed into a U-shaped cross section and is inserted into the outer surface of the peripheral portion of the door body, and the decorative frame is integrally molded and protrudes from the front edge of the decorative frame. An insertion leg is provided that is inserted into the door body through the insertion hole and comes into contact with the inner surface of the door body when it is inserted into the door body, and the decorative frame is attached to a curved portion of the rear edge of the decorative frame. A concave portion is provided that engages a convex portion of the door body when inserted into the door body, and the insertion leg is attached to the inner surface of the door body with a heat insulating wall made of a foamed heat insulating material filled in the door body. Since it is characterized by crimping and fixing, the number of assembly steps is small and the work is easy.
Moreover, it is possible to provide a fixing device for a decorative door frame, which allows the front edge of the decorative frame to be brought into close contact with the front surface of the door for reliable fixation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a perspective view, and FIG. 3 is an exploded perspective view. In the drawings, 1 is a door body, 2 is an insertion hole, 3 is a decorative frame, 4 is a frame, 5 is an insertion leg, and 7 is a heat insulating wall.

Claims (1)

[Scope of utility model registration request] The door body is formed in the shape of a flat hollow box, has an insertion hole on the front periphery and a convex part on the rear periphery, and has a U-shaped cross section with curved parts on the front and rear edges. a decorative frame made of plastic which is formed into a plastic frame and is inserted into the outer surface of the peripheral portion of the door body; and a decorative frame made of plastic that is integrally molded and protrudes from the front edge of the decorative frame and which is inserted into the door body. an insertion leg that is inserted into the door main body through the insertion hole and comes into contact with the inner surface of the door main body when the decorative frame is inserted into the door main body; The door includes a concave portion that engages with a convex portion of the door body when the door body is installed, and a heat insulating wall made of a foamed heat insulating material that is filled into the door body and crimps and fixes the insertion leg to the inner surface of the door body. Fixing device for decorative door frame.