JPS5825832B2 - 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 using a landing device shown in 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 banger case which is appropriately fixed to the peripheral wall 2 above the entrance/exit 1 and whose cross section is approximately L-shaped, and a vertical piece 3a is attached to the peripheral wall 2. A horizontally protruding protruding surface 3b for mounting the rail 4, a vertical surface 3c and a lower piece 3d formed by bending the protruding end downward are formed on a part of the protruding surface 3b. There is.

Holes 3e for tightening rails 4 at appropriate intervals are formed in the vertical surface 3c, and screw seats 5 are welded to the back side of these holes.

The rail 4 is formed from a thin steel plate into a substantially C-shaped cross section, and has an upper surface 4a, side surfaces 4b1, lower surface 4c1, and upper and lower edges 4 of the opening.
d t 4 e, and the width of the opening is made to be approximately the same as the width of the vertical surface 3c of the banger case 3.

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

The rail 4 is fixed to the vertical surface 3c of the banger case 3 with bolts 6 so that the upper edge 4d of the opening is in contact with the protruding surface 3b of the banger case 3.

T is a roller that moves on the rail 4, and is pivotally connected to a hanging plate 8, which is connected to a landing door 9 for opening and closing the entrance/exit 1 as appropriate.

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.

That is, due to molding distortion of the hanger case 3 and rail 4 and dimensional errors of the holes 3 e and 4 f, it is difficult to bring the upper surface of the protruding surface 3 b of the hanger case 3 into contact with the upper opening edge 4 d of the rail 4 over the entire length. , the entire length of the rail 4 cannot be supported by the protruding surface 3b of the hanger case 3, and it is necessary to increase the rigidity of the rail 4 itself.
It is not possible to make the plate thinner or lighter.

In addition, the partial gap existing between the protruding surface 3b of the hanger case 3 and the upper edge 4d of the opening of the rail 4 may come into contact with each other due to its weight when the door 9 of the landing is opened/closed, producing a harsh noise. There was a problem.

The present invention aims to solve the above-mentioned drawbacks and to provide an elevator door rail device in which the rail can be easily brought into close contact with the protruding surface of the banger case.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In the figure, the same symbols as in Figures 1 and 2 indicate corresponding parts, and 11
is provided on the side surface 4b of the rail 4, and the banger case 3
These slots are made of daruma holes, which are provided at the same pitch as the holes 3e constructed in the vertical surface 3c, and whose longitudinal sides are inclined at an angle less than or equal to the friction angle janθ.

11a is a slot 11 that is slightly larger than the outer shape of the head of the bolt 6.
11b is a groove portion having a width slightly larger than the outer diameter of the threaded portion of the bolt 6.

That is, as shown in FIG. 4, the large diameter portion 11a of the slot 11 of the rail 4 is passed through the bolt 6, which has been previously screwed into the screw seat 5 with a slight underhead, in the direction of the arrow, so that the side surface 4b is aligned with the vertical surface 3c. When they are brought into contact and the rail 4 is moved so that the threaded part of the bolt 6 enters the groove 11b of the slotted hole 11, the rail 4 moves downward due to the inclination of the groove 11b, and the upper edge 4d of the opening of the rail 4 touches the protrusion of the banger case 3. It is in close contact with surface 3b.

Then, completely tighten the bolt 6 at this position.

By providing the inclined slot 11 on the side surface 4b of the rail 4 in this way, even if there is a final strain on the hanger case 3 and the rail 4, the protruding surface 3b of the hanger case 3 and the upper opening edge 4d of the rail 4 can be easily aligned. Because of the secure contact, the rail 4 can be supported over its entire length by the protruding surface 3b of the hanger case 3, and even if the rail 4 itself has low rigidity, the required rigidity can be obtained when it is attached, resulting in a thinner design. , lightweight,
The rail 4 can be manufactured easily and at low cost.

Although this embodiment has been described in connection with a hall system, it is clear that similar effects can be obtained even if this embodiment is applied to a car system.

Further, since there is no gap between the protruding surface 3b of the bunker casing 3 and the upper opening edge 4d of the rail 4, no harsh noise is generated during the opening/closing operation of the landing door 9.

Furthermore, in this embodiment, since the slotted hole 11 is made of a round hole, if it becomes necessary to replace the rail 4 due to wear or the like, it can be easily replaced by simply loosening the bolt 6.

5 and 6 show another embodiment of the present invention, in which a slot 11 is provided on the hanger case 3 side and a hole 4f is provided on the rail side,
The head of the bolt 6 is placed inside the vertical surface 3c, and the rail 4
It is fixed with a nut 12 on the side.

In this embodiment as well, the rail 4 is fastened through the slot 11 arranged at an angle, so a detailed explanation will be omitted, but this embodiment is similar to the embodiments shown in FIGS. 3 and 4. It is clear that the effect is obtained.

As explained above, the present invention fastens the rail with a bolt inserted through a slot whose longitudinal axis is inclined with respect to the longitudinal axis of the rail on either the vertical surface of the banger case or the side surface of the rail. The upper edge of the opening of the rail, which has a C-shaped cross section, can be brought into close contact with the protruding surface of the hanger case by shifting the rail in the longitudinal direction.

As a result, the length of the rail can be reliably supported over its entire length, the required rigidity can be obtained with a simple rail, and an inexpensive elevator door rail device that does not emit noise is realized.

[Brief explanation of the drawing]

Fig. 1 is a front view of a main part of an elevator hall showing a conventional elevator door rail device, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is an illustration of an elevator door rail device according to the present invention. FIG. 4 is an enlarged vertical sectional view of the main part of FIG. 3, and FIG. 5 is a diagram showing another embodiment of the elevator door rail device according to the present invention. A front view of the main parts of the rail fixing part, Figure 6 is the same as ■- in Figure 5.
■It is a line sectional view. 3...Banger case, 3b...Protruding surface, 3c...Vertical surface, 4...Rail,
4b... Side surface, 4d... Upper edge of opening,
6...Bolt, 11...Slot hole, 11a
......Large diameter part, 11b...Groove part. In addition, the dimensions of the middle part of the figure or equivalent parts are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A banger case including a vertical piece, a protruding surface extending horizontally from the vertical piece along its length, and a vertical plane hanging down from the end of the protruding surface, and a cross-sectional shape. has a C-shape, the upper edge of the opening abuts the upper surface of the protruding surface from above, and the inner sieve abuts the vertical surface and is fastened to the banger case by a plurality of bolts along the length. In the elevator door rail device, the plurality of holes for inserting the bolts in either one of the side surface and the vertical surface of the rail have a longitudinal direction inclined at a predetermined angle with respect to the longitudinal axis of the rail. A door rail device for an elevator, characterized in that the head and threaded portions of the bolts each have a slotted hole having a large diameter portion and a groove portion.