JPS5825833B2 - Elevator door rail device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator door rail device.

First, a conventional door rail device will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is an entrance/exit, 2 is a peripheral wall of the entrance/exit 1, 3 is a hanger case formed into an approximately L-shape appropriately fixed to the peripheral wall 2 above the entrance/exit 1, and a vertical piece 3a is attached along the peripheral wall 2. The upper piece 3b, the vertical mounting surface 3c, and the lower piece 3 have a chevron-shaped protrusion along the horizontal direction for mounting the rail 4 on a part of the hanging part.
Holes 3e for tightening the rails 4 at appropriate intervals are formed in the mounting surface 3c formed by d, and screw seats 5 are welded to the back surface.

The rail 4 is formed from a thin steel plate to have a YC-shaped cross section, and is formed to have an upper surface 4a, a side Dfi4b% lower surface 4CN, and upper and lower open ends 4dt4e, and the width of the opening is as follows. It is manufactured to have the same width as the mounting surface 3c of the banger case 3.

Furthermore, holes 4f are press-formed on the side surface 4b at the same pitch as the holes 3e formed on the mounting surface 3c of the banger case 3.

The rail 4 is fixed to the mounting surface 3c of the hanger case with bolts 6 so that the open end 4d is in contact with the upper piece 3b of the banger case 3.

7 is a roller that rolls on the rail 4 and is pivotally connected to the suspension 8;
The hanging plate 8 is appropriately connected to a landing door 9 that opens and closes the entrance/exit 1.

Reference numeral 10 denotes a steady roller which is pivotally connected to the hanging plate 8 to prevent the landing door 9 from swinging abnormally during opening and closing operations.

Since the conventional device is constructed as described above and relies on the bolts 6 to attach the rail 4, welding of the screw seat 5 causes distortion in the hanger case 3, which requires a large number of people to correct.

Further, the machining of the screw seat 5 alone requires a lot of manpower, and the overall cost is high.

The present invention solves the above-mentioned drawbacks, and aims to provide an elevator door rail device in which a rail can be attached to a hanger case with a simple structure.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5.

In the figure, the same reference numerals as in Figures 1 and 2 indicate the same parts, and 11 is a square hook formed by cutting and raising the mounting surface 3c of the hanger case 3 on three sides, and the cross-sectional shape is shown in Figure 5. They have an m-shape, and a plurality of them are provided at appropriate intervals along the entire length of the mounting surface 3c.

11a is the rising end of the hook 11, 12 is the rail 4
A rectangular window is provided on the side surface 4b at the same pitch as the hooks 11, and the upper side of the window 12 is an inclined side 12a that is inclined with respect to the horizontal line at an angle smaller than the friction angle.

The friction angle here refers to the maximum angle between the inclined side 12a and the rising end 11a of the hook 11 that presses against it, at which no slipping occurs due to the frictional force between them. °.

Moreover, this inclined side 12a is connected to the upper open end 4 of the rail 4.
When d contacts the upper side 3b of the banger case 3, it is at a height that intersects the upper side of the hook 11.

With the above configuration, when the hook 11 is engaged in the window 12 of the rail 4 and the side surface 4b is in contact with the mounting surface 3c,
The rising end 11a of the hook 11 is the inclined side 1 of the window 12.
The rail 4 is fixed to the hanger case 3 by displacing the rail 4 to the left until it comes into pressure contact with the hanger case 2a.

In addition, since the slope of the sloped side 12a is set to be less than the friction angle, the window 12 and the hook 11 do not slip due to the frictional force between the sloped side 12a and the rising end 11a.
The rail 4 will not move or fall off due to vibrations or the like.

In this way, the hook 11 and the window 12 having the inclined side 12a
This secures the rail 4 to the banger case.

Therefore, since bolts are not used to attach the rail, the conventional welding of screw seats, correction of distortion, and screw tightening work can be omitted.

In addition, in the above embodiment, the hook 11 is provided on the hanger case 3 side.
Although the window 12 is provided on the rail 4 side, the same effect can be obtained even if it is the other way around.

Moreover, although FIGS. 3 to 5 show a hall system, it is clear that similar effects can be obtained even if this system is applied to an elevator car.

As explained above, this invention fixes a steel plate rail to a steel plate hanger case using a combination of a hook and a window, makes the inner surface of the opening of the rail contact the mounting surface, and attaches the upper edge of the C half opening of the rail. Since it can be attached closely to the upper piece that makes up the surface, the rail can be mounted with a simple device configuration and simple work, and the rigidity of the mounting surface part contributes to the rigidity of the rail. The present invention aims to realize an inexpensive elevator door rail device that can obtain required rigidity with a simple rail and further reduce noise generation.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main part of an elevator entrance showing a conventional elevator door rail device, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is an embodiment of the elevator door rail device according to the present invention. FIG. 4 is an enlarged view of part 1 of FIG. 3. FIG. 3...Banger case, 3a...Vertical piece, 3b...Top piece, 3c...Mounting surface,
3d...Lower piece, 4...Rail, 4b.
...Side, 4 d y 4 e...Top and bottom open ends, 11...Hook, 11a...
・Rising end, 12... Window, 12a...
. . . Inclined side 0 Note that the same or equivalent parts in the drawings are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. A banger case made of a metal plate having a vertical piece and a metal plate formed on the vertical piece and having a horizontal upper piece and a mounting surface perpendicular to the lower side, and having a C-shaped cross section. an elevator door rail device comprising: a rail made of a metal plate fixed to the banger case with an upper open end abutting the upper piece and a side surface abutting the mounting surface; a plurality of rectangular windows formed horizontally between each other on one of the surface and the side surface of the rail, and having an inclined side where the water side is inclined with respect to the horizontal line; 1. A door rail device for an elevator, comprising a plurality of hooks cut and raised at pitches and square in cross section and hooked to the window.