JPH05263562A - Guide rail and guide track for sliding door - Google Patents

Abstract

PURPOSE: To prevent a guide rail from being blocked by debris. CONSTITUTION: In a guide rail 20 with a longitudinal opening 22 having a side width suited for accommodating a guide bracket 26 for guiding and an inner passage 24 that communicates with the longitudinal opening 22 along the longitudinal direction of the guide rail, the side width of the inner passage 24 is increased as compared with that of the longitudinal opening 22 for accommodating the guide bracket 26 of a slide door 1, thus removing debris falling into the guide rail without being blocked by the guide rail 20 and without causing the slide door to operate improperly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rail,
In particular, it relates to a guide rail for accommodating a guide bracket of a slide door such as an elevator door and a guide device for the slide door.

[0002]

2. Description of the Prior Art Most conventional elevator doors 1
Has a guide shoe 3 attached to its bottom,
As shown in FIGS. 1 and 2, the guide shoe 3 slides in the groove of the sill 5 and guides the door 1 so that the door 1 can be opened and closed. Each door 1 is moved by the driving means 7 so as to move toward and away from the other door.
In this system, it is known that the electromechanical interlock operates between two doors 1 when the doors are closed. If the electromechanical interlock (not shown) is not activated, the elevator cannot raise or lower from its starting position. Therefore, it is important that the door 1 moves in the same plane so that the electromechanical interlocking device can function. This means that the door 1 needs to be guided by the guide shoes 3 and the sill 5 at the bottom of each door.

[0003]

A conventional guide shoe 3 as shown in FIG. 2 is a plate 9 for attachment (by screws) to the bottom of an elevator door 1 and a groove 1 in a sill 5.
3 includes a spherical portion 11 for moving inside.
The spherical portion 11 of the conventional guide shoe 3 is generally made of nylon, woven or molded plastic bound to the plate 9 and wears badly in the groove 13 of the sill just as the sill 5 itself wears. This is, somewhat, the ditch 1
This causes a buildup of wear debris in the sill that impedes the movement of the guide shoe 3 along. In fact, if a considerable amount of wear debris accumulates, the guide shoe 3 will stop, resulting in a complete failure of the elevator door and the door 1 will not close.

It is an object of the present invention to further improve the above-mentioned prior art by eliminating the problems associated with abrasion debris in the sill.

[0005]

In view of this point, the present invention provides a guide rail for accommodating a guide bracket of a sliding door. This guide rail has a long opening having a lateral width suitable for accommodating and guiding the guide bracket of the slide door during use, and an internal passage communicating with the long opening along the longitudinal direction of the guide rail. , And the lateral width of the internal passage is wider than the lateral width of the long opening. This guide rail shape minimizes the possibility of elevator door failure due to wear debris within the rail. Furthermore,
If something smaller than the lateral width of the long opening falls into the rail and accumulates in the internal passage, it does not affect the movement of the guide bracket along the long opening of the rail. Also, small objects that do not fall into the guide rail and stick to it are removed by the guide bracket along the rail and pushed out of the rail completely, so the rail can be kept relatively free of dust. ..

It is preferable that the lateral width of the long opening is widened toward the internal passage. This arrangement not only prevents any debris that has fallen into the guide rail from clogging the long opening, but also ensures that debris that falls into the internal passage is removed from the guide rail. The lateral width of the internal passage is preferably wider than twice the lateral width of the long opening. Obviously, the larger the cross section of the internal passage to the long opening, the less likely the rail will be obstructed by debris.

The guide rails are preferably constructed of a low friction material to reduce wear of the rails on the guide bracket during use. The guide rails are preferably flexible so that they can be accommodated within a sill of any shape. Further, if the guide rail has elasticity, it can be easily inserted into the sill and removed when worn. To replace the guide rails, simply slide them into the sill without having to remove the guide brackets from the elevator doors or the elevator door drive supports.

The guide rails are preferably manufactured from a plastic material by extrusion, which makes the manufacturing costs very low. It goes without saying that other appropriate materials or manufacturing techniques can be used as well. According to another aspect of the present invention, there is provided a guide device for a slide door including a guide bracket for attaching to the slide door and a guide rail according to the present invention. Here, the guide bracket has a substantially planar shape and has a thickness slightly smaller than the lateral width of the long opening of the guide rail, so that the guide bracket may be guided along the long opening as the door slides during use. Can be moved.
Due to the substantially planar shape of the guide bracket, the manufacturing costs of the components can be significantly reduced. Furthermore,
If this guide device is used, it is preferable that the guide bracket, which is made of metal, has a very long operating life, so normally it is only necessary to replace the guide rail.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the accompanying drawings. With reference to FIGS. 1, 3 and 4, a guide rail 20 according to the present invention comprises an extruded portion of plastic material forming an elongated opening 22 and an internal passage 24 communicating with the elongated opening 22. .. As shown in FIG. 4, the lateral width of the long opening 22 widens toward the internal passage 24.

In use, the guide rail 20 is placed in the groove 13 of the sill to accommodate a planar guide bracket 26 extending into the elongated opening 22. Long opening 22
The width of the guide bracket is slightly larger than the thickness of the guide bracket 26.
It can be guided by the guide rail 20 without actually gripping.

Since the guide bracket 26 is made of metal, it wears slowly and has a long operating life. Further, since the guide rail 20 is formed by extruding a plastic material, the manufacturing cost is very low and it has some elasticity. This elasticity makes it very easy to insert the guide rail 20 into the sill groove 13 or remove it after wear. In fact, when replacing the portion of the guide rail 20, it is not necessary to remove the guide bracket 26 from the slide door 1 or the slide door 1 from its drive support (not shown).

The lateral width of the internal passage 24 is substantially larger than the lateral width of the long opening 22 and has an appropriate depth. The larger the cross-sectional area of the internal passage 24, the less likely debris that falls into the passage will interfere with the sliding movement of the guide bracket 26 along the long opening 22. Thus, the configuration of the guide rail 20 according to the present invention makes it difficult for the sliding door 1 that cooperates with such a guide device to fail. In fact, since there is a considerable gap in the internal passage 24, the debris that falls into this is mostly removed along the passage by the guide bracket 26 during opening and closing of the slide door 1 and ends of the guide rail 20. It is pushed out of the section.

Although the present invention has been described with reference to the embodiments, it goes without saying that modifications can be made within the scope of the present invention.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a pair of elevator doors.

FIG. 2 is a cross-sectional view of a conventional guide rail, showing a conventional guide shoe.

FIG. 3 is a cross-sectional view of a guide rail according to the present invention, showing a guide bracket disposed within the guide rail.

FIG. 4 is an enlarged cross-sectional view of a guide rail according to the present invention.

[Explanation of symbols]

 1 Elevator Door 5 Sill 20 Guide Rail 22 Long Opening 24 Internal Passage 26 Guide Bracket

Claims (8)

[Claims] 1. A guide rail for accommodating a guide bracket of a slide door, the long opening having a lateral width suitable for accommodating and guiding the guide bracket of the slide door during use, and the longitudinal direction of the guide rail. An inner passage communicating with the elongated opening along a direction, and a lateral width of the internal passage is wider than a lateral width of the elongated opening. 2. The guide rail according to claim 1, wherein a lateral width of the long opening portion widens toward the internal passage. 3. The guide rail according to claim 1, wherein a lateral width of the internal passage is wider than twice a lateral width of the long opening. 4. The guide rail according to claim 1, wherein the guide rail is made of a low friction material. 5. The guide rail is manufactured from a plastic material by extrusion.
The guide rail according to any one of 1 to 4. 6. The guide rail according to claim 1, wherein the guide rail has elasticity and flexibility.
Guide rail described in one. 7. A guide bracket for attaching to a sliding door, and the guide rail according to claim 1, wherein the guide bracket is substantially flat. A guide device for a sliding door, which has a thickness slightly smaller than the lateral width of the long opening of the guide rail and can move the guide bracket along the long opening as the slide door slides during use. .. 8. The guide device for a slide door according to claim 7, wherein the guide bracket is a flat metal plate.