JP3336259B2 - Elevator doorway safety devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an elevator entrance provided in a car door and a landing door.

[0002]

2. Description of the Related Art A conventional safety device for an elevator entrance is:
What is described in JP-A-8-198556 is known,
This will be described with reference to FIG. 3 which is a front view as seen from the landing side, FIG. 4 which is a sectional view of the landing door shown in FIG. 3, and FIG. It has an infrared detector comprising a light receiver 2 installed at the end of the car door 1 on the door stop side and a light transmitter 4 installed at a position opposite to the car door of the car pillar. Is formed over almost the entire height of the elevator entrance as shown in FIG. 3, and is configured to detect an obstacle (not shown) interposed between the car door 1 and the car column 3. The floodlight 4 is shown in FIG.
As shown in FIG. 1, a case 10 having an opening 9 facing the car door 1 and having a substantially U-shaped cross section, a light-transmitting plate 11 such as an acrylic plate attached to the opening 9, a printed circuit board 12 built in the case 10, The light emitting device includes a plurality of light projecting bodies 13 such as diodes arranged at equal intervals on a printed board 12, and a wiring 14 having one end connected to the light projecting body 13 via the printed board 12.

When the car door 1 and the landing door 5 are open as shown in FIG. 5, a bogie 8 enters from the landing 6 toward the car 7 and collides with the car column 3 by mistake. In this case, the car pillar 3 directly collides with the light projector 4 mounted almost over the entire area of the entrance side of the landing side, and the case 10 of the light projector 4 bends and damages the printed board 12 and the light projector 13. Will be lost. Therefore, in the safety device for the entrance of the elevator described in Japanese Patent Application Laid-Open No. Hei 8-245147, the bogie 8 or the like trying to enter from the landing 6 toward the car 7 is erroneously inserted into the car pillar 3 as shown in FIG. A guard 3b is interposed between the projector 4 and the landing in order to prevent the projector 4 from being damaged by a collision.

[0004]

However, a conventional safety device for an entrance of an elevator is to divide the car column 3 into two parts as shown in FIG. 6 and prevent the car column 3b provided on the landing side from impact of collision. , And it is necessary to newly install the car pillars 3a and 3b because the light transmitter 4 is interposed between the divided car pillars 3a and 3b. The parts manufacturing cost and the cost for exchanging the existing car columns 3 and the new car columns 3a and 3b are expensive and expensive.

An object of the present invention is to provide an elevator entrance / exit safety device which can prevent damage due to a collision at a low cost in a short time.

[0006]

In order to achieve this object, according to the present invention, a car door and a landing door, and a car pole side facing the car door and the landing door are provided with a light transmitter and a light receiver for detecting an obstacle, respectively. In a safety device for an elevator entrance, the case of the light emitting device and the light receiving device provided on the car column side is formed to have a substantially U-shaped cross section, and
At least one of the U-shaped case and the receiver
(A) The reinforcing body is provided substantially perpendicular to the opening / closing direction .

[0007] The safety device for the entrance of the elevator according to the present invention, as described above, is provided with a reinforcing member for receiving in the direction of intrusion into the car in the case of the light-emitting device or the light-receiving device provided on the car column side as described above. The case and its interior can be protected by the reinforcing body against collision when entering the car without replacing the column by dividing it into two parts. can do.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of an elevator provided with a safety device for an elevator entrance according to an embodiment of the present invention.

At a door stop side end of the car door 1, a light receiver 2 having a predetermined height is installed so as to be located between the safety shoe 18 and the car door 1, and faces the light receiver 2 of the car pillar 3. A floodlight 15 having a predetermined height is installed at a position, and the floodlight 1 is opened with the car door 1 and the landing door open.
The light irradiating the photodetector 2 from the light shield 5 forms a detection device that detects the presence of an obstacle (not shown) between the car door 1 and the car pillar 3.

As shown in FIG. 2, an enlarged view of the light emitter 15 includes a case 17 having a substantially U-shaped cross section having an opening 9 on the side facing the car door 1, and an acrylic plate or the like mounted on the opening 9. A light-transmitting plate 11, a printed circuit board 12 housed in a case 10, a plurality of light-emitting elements 13 such as light-emitting diodes arranged at equal intervals in the height direction on the printed circuit board 12, and printing on the light-emitting element 13. It is configured to include wiring and the like (not shown) connected via the substrate 12. Case 17
A parallel section 17a, 17b substantially parallel to the opening and closing direction of the car door 1 and the landing door, and an end 17c of the parallel section 17a, 17b, which seals the side opposite to the light receiver 2, have a substantially U-shaped cross section. Inside the case 17, there is provided a reinforcing member 16 provided substantially vertically to the opening / closing direction of the car door 1 and the landing door, and to the direction of entry into the car 7.
The reinforcing member 16 may be provided in the vicinity of the printed circuit board 12 in the case 17, and is not limited to the light receiving device 2 side of the printed circuit board 12, but the light projecting member 13 may be provided on the light receiving device 2 side of the printed circuit board 12.
May be discretely provided at a position where the irradiation light from the light source is not blocked, for example, between a plurality of light projecting bodies 13 arranged in the height direction.

In this manner, the floodlight 15 mounted almost over the entire entrance height on the side of the car pillar 3 on the landing side is used.
Since the reinforcing body 16 is provided in a direction substantially orthogonal to the direction of collision of the bogie or the like, when the car door 1 and the landing door are open, the car enters from the landing side to the car 7 side. Even if a truck or the like to be accidentally collides with the car column 3, the rigidity of the case 17 in the intrusion direction is increased, and even if the trolley or the like directly collides with the car column 3, the light emitting device 15, especially the case 17
It is possible to prevent the printed board 12 and the luminous body 13 arranged inside from being damaged. In addition, since it is not necessary to manufacture the two-part cage columns 3a and 3b and replace them as in the conventional case shown in FIG. 6, it is only necessary to attach the floodlight 15 having the reinforcing member 16 to the existing cage column 3, and it is inexpensive. And can be constructed in a short time.

In the above-described embodiment, the reinforcing member 16 is provided in the case 17 of the projector 15 mounted on the car column 3 side, but the reinforced case 17 may be shared as the case of the light receiver 2. . In addition, although the light projector 15 is provided on the car pillar 3 side and the light receiver 2 is provided on the car door 1 and the landing door side, the arrangement may be reversed, and in any case, the light projector 15 provided on the car pillar 3 side which is likely to collide. The reinforcing member 16 may be provided in at least one case of the light receiver 2.

[0013]

As described above, the safety device for the entrance of the elevator according to the present invention is provided with a reinforcing member for receiving at least one of the projector and the receiver disposed on the car column side in the direction of entry into the car. Therefore, it is not necessary to replace the existing car column with a car column divided into two as in the past,
An object such as a truck can be prevented from being damaged by collision at a low cost in a short time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of an elevator provided with a safety device for an elevator entrance according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of a safety device for an elevator entrance shown in FIG.

FIG. 3 is a front view of a conventional elevator provided with a safety device for an entrance and exit, as viewed from a landing side.

FIG. 4 is a cross-sectional view of a main part of the elevator shown in FIG.

FIG. 5 is an enlarged view of a main part of the elevator shown in FIG.

FIG. 6 is a cross-sectional view of a main part of another elevator shown in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 car door 2 light receiver 3 car pillar 6 landing 7 car 8 trolley 9 opening 10 case 12 printed circuit board 13 diode 15 floodlight 16 reinforcing body 17 case

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B66B 13/00-13/30

Claims (2)

(57) [Claims] 1. A safety device for an elevator entrance provided with a car door and a landing door, and a light transmitter and a light receiver for detecting an obstacle on the car pillar side facing the car door and the landing door, respectively, wherein the car door side is provided on the car pillar side. the projector and the light receiver of Ke
The base is formed in a substantially U-shaped cross section, and the
At least one U-shaped case of the
A safety device for an elevator entrance, wherein a reinforcement is provided substantially vertically to the opening / closing direction . 2. The car according to claim 1, wherein the car
At least one of the light emitter and the light receiver provided on the pillar side
One is a printed circuit board installed in the case,
It has a plurality of light emitters arranged on this printed circuit board,
The safety device for an entrance of an elevator , wherein the reinforcing member is provided near the printed circuit board in the case .