JP2003252557A - Door shoe of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smooth the open/close motion of the door of an elevator. <P>SOLUTION: The door shoes 10a and 10b are mounted at two positions along a guide groove 14 of the door 12 of the elevator, and the two door shoes have shoe frames 16 to be fixed to the door and rollers 18a and 18b supported by both ends of each shoe frame. The rollers are disposed in such a way that the outer surfaces of the rollers project from the shoe frames outward in the door opening/closing direction and in the direction orthogonally crossing the door opening/closing direction. Because of the structure, the rollers 18 abut to side walls 30a and 30b of the guide groove 14 even if the moment to twist the door 12 is applied, and the friction of the opening/closing door is reduced and the motion of the door is smoothed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a door shoe which is provided in an elevator door and which engages with the guide groove for moving the door along the guide groove when the door is opened and closed.

[0002]

2. Description of the Related Art An elevator door is constructed so that a door shoe provided on the door engages with a guide groove to guide the opening / closing operation of the door. When the door shoe slides in the guide groove, if the friction between the side wall of the guide groove and the door shoe is large, the door cannot be opened and closed smoothly.

[0003]

As described above, unless the door shoe slides smoothly in the guide groove, the opening / closing operation of the door itself is not smooth, which may cause an opening / closing failure. In particular, when a force is applied in a direction orthogonal to the opening / closing direction of the door, the door shoe comes into contact with the side wall of the guide groove, and friction increases. Further, even when a moment is applied to the door to rotate it about an axis in the door which is perpendicular to the opening / closing direction, and the door is twisted, the door shoe may come into contact with the side wall of the guide groove and the friction may increase. is there.

An object of the present invention is to provide a structure in which the sliding of the door shoe in the guide groove is smooth.

[0005]

In order to solve the above-mentioned problems, an elevator door shoe according to the present invention has a shoe frame attached to a side portion of a door and extending into a guide groove provided in the door frame. And a roller that is rotatably supported by the shoe frame and that comes into contact with the side wall of the guide groove and rolls. Then, the two rollers positioned at both ends in the door opening / closing direction may come into contact with the guide groove side wall before the shoe frame when the rollers try to contact the side walls of the guide grooves on the opposite sides. Has been placed. This prevents the shoe frame from coming into contact with the side wall of the guide groove, and only the rollers come into contact with each other, so that opening / closing resistance is reduced.

Another door shoe of the elevator according to the present invention is a shoe frame attached to a side portion of a door and extending into a guide groove, and a side wall of the guide groove rotatably supported by the shoe frame. A roller that comes into contact with and rolls. Out of the rollers, two rollers located at both ends of the door in the opening / closing direction are provided such that outer peripheral surfaces thereof project from the shoe frame in the outside of the opening / closing direction and in a direction orthogonal to the opening / closing direction. . As a result, even when the door is twisted, the outer peripheral surface of the roller contacts the side wall of the guide groove, and the smooth opening and closing of the door is maintained.

Further, two other door shoes may be provided in the opening / closing direction of the door, and rollers may be provided at both ends of the opening / closing direction. This roller is provided so that the outer peripheral surface thereof protrudes from the shoe frame in one of the opening / closing direction and the direction orthogonal to this. As a result, the two door shoes can be made common, and the parts are shared.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings. Figure 1
It is a perspective view showing a schematic structure of door shoe 10 of this embodiment. FIG. 2 is a view showing a state in which the door shoe 10 is provided on the side portion of the door 12 along the guide groove 14. The guide groove 14 is provided in the door frame that surrounds the door 12 and guides the opening / closing operation of the door 12. The door shoe 10 is a shoe frame 1 fixed to the door 12.
6 and two rollers 18a, 18b rotatably supported by the shoe frame 16. Shoe frame 16
Includes a plate portion 24 fixed to the pedestal 20 of the door 12 with a screw 22 and a holding portion 26 holding the rollers 18a and 18b. Further, the plate portion 24 is provided with a through hole 28 through which the screw 22 passes, as shown in FIG. The rollers 18a and 18b are supported at both ends in the left-right direction in FIG. 1, and the outer peripheral surfaces thereof project outside the holding portion 26 in the left-right direction and in the up-down direction in FIG. More specifically, the outer peripheral surface of the roller 18a is outside the holding portion 26 on the left side, the upper side, and the lower side in FIG. The other roller 18b is outside the holding portion 26 on the right side, the upper side, and the lower side. With this configuration, when the door shoe 10 moves in the guide groove 14,
Rollers 18a and 18b are provided on the side walls 30a and 30b of the guide groove.
And the shoe frame 16 such as the holding portion 26 comes into contact with the side wall 3
It prevents contact with 0a and 30b.

FIG. 3 is a view showing a state when a moment for rotating the door 12 is applied about an axis in the door plane which is perpendicular to the opening / closing direction of the door 12. The axis of this moment is an axis orthogonal to the paper surface in FIG. The door shoes 10a, 1 are respectively provided at two locations on the side of the door 12 parallel to the door opening / closing direction (left and right direction in the figure).
0b is fixed. Two door shoes 10a, 10
b is the same as the door shoe 10 shown in FIG. 1 and the like, and is fixed to the door 12 so that the left-right direction in FIG.

When the door 12 is twisted as shown in FIG. 3, of the four rollers in total, the two outermost rollers in the door opening / closing direction, that is, the door shoe 1
0a roller 18a, door shoe 10b roller 18b
Respectively contact the side walls 30a and 30b opposite to the guide groove. As described above, the outer peripheral surfaces of the rollers 18a and 18b project outward from the shoe frame 16 in the left-right direction and in a direction orthogonal to the shoe frame 16, so that the shoe frame 16 is prevented from directly contacting the guide groove 14. ing.

FIG. 4 is a diagram showing a structure of a door shoe 40 which is given as a comparative example for clarifying the features of the present embodiment. The structure of the door 12 and the guide groove 14 is the same as the structure shown in FIGS. Door shoes 40a, 40 having the same structure at two locations on the door 12
b is fixed. The door shoe 40 has a structure in which a roller 44 is held substantially at the center of a holding portion 42 extending in the door opening / closing direction. When the door 12 is twisted as in FIG. 3, the roller 44 causes the side walls 30a and 30b of the guide groove 14 to move.
The holding portion 42 abuts before the abutting. When the holding portion 42 abuts, the door 12 cannot be opened and closed smoothly.
On the other hand, in the case of FIG. 3, the roller 18a or 18b always comes into contact, so that the door 12 is always opened and closed smoothly.

[0012]

As described above, according to the present invention, the roller of the door shoe abuts on the side wall of the guide groove even when a moment for twisting the door acts, so that the door can be smoothly opened and closed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a door shoe of this embodiment.

FIG. 2 is a view showing a state in which a door shoe is attached to a door.

FIG. 3 is a diagram showing a state when a moment for twisting the door acts on the door including the door shoe of the present embodiment.

FIG. 4 is a diagram showing a comparison with the present embodiment, and is a diagram showing a state in which a moment for twisting a door acts.

[Explanation of symbols]

10 (10a, 10b) door shoes, 12 doors, 1
4 guide grooves, 16 shoe frames, 18a, 18b
Roller, 24 plate portion, 26 holding portion, 30 (30
a, 30b) Side wall of the guide groove.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shota Suzuki             2-6-2 Otemachi 2-chome, Chiyoda-ku, Tokyo             Ryoden Building Techno Service Co., Ltd. (72) Inventor Noriaki Hashimoto             2-6-2 Otemachi 2-chome, Chiyoda-ku, Tokyo             Ryoden Building Techno Service Co., Ltd. F-term (reference) 3F307 AA02 CA22 CA26 CA28

Claims (3)

[Claims] 1. An elevator which is attached to at least one of the sides of an elevator door along the opening / closing direction, extends along the opening / closing direction, and is housed in a guide groove provided in a door frame to guide the door. A door shoe attached to a side portion of the door, the shoe frame extending into the guide groove, and a roller rotatably supported by the shoe frame and contacting a side wall of the guide groove to roll. Of the rollers, the two rollers located at both ends in the opening / closing direction of the door are arranged such that when the rollers try to contact the side walls of the guide grooves on the opposite sides, the two rollers are arranged before the shoe frame. An elevator door shoe that abuts a guide groove side wall and prevents the shoe frame from contacting the guide groove side wall. 2. An elevator door shoe, which is attached to at least one side of an elevator door along an opening / closing direction, is housed in a guide groove extending along the opening / closing direction, and guides the door. A shoe frame that is attached to a side portion of the door and extends into the guide groove; and a roller that is rotatably supported by the shoe frame and that contacts the side wall of the guide groove and rolls. Among them, two rollers located at both ends in the opening / closing direction of the door are door shoes for an elevator, the outer peripheral surfaces of which are provided so as to project from the shoe frame in the outside of the opening / closing direction and in a direction orthogonal to the opening / closing direction. 3. The elevator door shoe according to claim 2, wherein two door shoes are provided in an opening / closing direction of the door, and the rollers are provided at both ends of shoe frames of the two door shoes, respectively. A door shoe for an elevator, the outer peripheral surface of which is provided so as to project from the shoe frame in one of the opening / closing direction and in a direction orthogonal to the one.