JPS6214555Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a rail pull-out device of a drawer portion provided in a box body of a refrigerator or the like so that the drawer can be freely taken in and taken out.

Conventionally, this type of rail pull-out device has a fixed roller 4 and a fixed rail 5 fixed to both sides of the inner surface of a box body 1, as shown in FIG. It was installed separately and secured with screws. Among these, the screw plate that fixes the fixed roller 4 needs to be thicker because excessive force is applied to the fixed roller 4 when it is pulled out, and the screw plate that fixes the fixed rail 5 needs to be thicker. This was because the plate thickness did not need to be as thick as the former. There was a drawback that the number of man-hours increased because it required two parts to fix this screw plate to the inner surface of the box.

Furthermore, when the parts are integrated in order to reduce the number of parts, there is a problem in that the material must be matched with the threaded plate 3 of the fixed roller 4, resulting in an increase in the width of the material.

This invention was made for the purpose of eliminating the above-mentioned drawbacks, and the illustrated embodiment will be described below.
To explain this idea in detail, 1 is a box body for a refrigerator, etc., which is made by injecting and foaming a heat insulating material between the outer box and the inner box;
The iron screw plates 3 installed in advance on the heat insulating material side of this inner box are a pair of fixed rails provided oppositely on both sides of the inner surface of the box body 1, and are formed into a U-shape in cross section. It has a mounting hole for fixing to the screw plate and a locking piece 5 cut and formed at the rear. Reference numeral 6 denotes a square hole for hooking this locking piece, which is formed in the inner box. Reference numeral 4 denotes a fixed roller which is rotatable and which itself is a screw, and is screwed to the screw plate 2. Therefore, fixation of the fixed rail 3 is completed by hooking and fixing the locking piece 5 into the square hole 6 on the inner surface of the box body 1, and fixing the front part to the screw plate 2 by tightening the screws. Reference numeral 7 denotes a pull-out door having a drawer part attached to the front opening of the box body 1 so as to be openable and closable; 8 denotes a movable rail protruding rearward on both sides of the back side of the door;
A rotatable rolling roller 9 is attached to the tip.

In the above configuration, the rolling rollers 9 of the movable rail 8
is slidably supported by the fixed rail 3, and a movable rail 8 is slidably supported on the fixed roller 4 and is attached so that it can be pulled out.

As mentioned above, in this invention, the front part of the fixed rail is screwed to the screw plate of the fixed roller, and the rear part is hooked on the inner surface of the box body to fix the fixed rail, thereby reducing the number of parts. In addition, even if an excessive force is applied to the front part of the fixed rail 3, that is, the rolling roller part, when the door is pulled out, it is still screwed to the screw plate, so the strength is satisfactory, and it is a device with great practical value. be.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a refrigerator showing an embodiment of this invention, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a sectional view taken along the - line in Figure 1.
The figure is an exploded perspective view of a fixed rail mounting device according to this invention, and FIG. 4 is an exploded perspective view of a conventional device corresponding to FIG. 3. In addition, the same reference numerals in the figures indicate the same or equivalent parts, 1 is a box body, 2 is a screw plate, 3 is a fixed rail,
4 is a fixed roller, 8 is a movable rail, and 9 is a rolling roller.

Claims (1)

[Scope of utility model registration request] A rail pull-out device comprising a pull-out section that can be freely inserted and removed within a box body, a movable rail with a rolling roller attached to the tip of the pull-out section, a fixed rail that supports the rolling roller in rotation and is fixed to both sides of the inside of the box body, and a fixed roller near the front end of the fixed rail that supports the movable rail in sliding motion, characterized in that a screw plate for screwing the fixed roller is attached in advance to the side of the box body insulation material, the front part of the fixed rail is screwed to this screw plate, and a locking piece is hooked and fixed to the rear part of the fixed rail on the inside of the box body.