JPH0524672U - Elevator door safety device - Google Patents

Abstract

(57) [Summary] [Purpose] To detect the state of a cord such as a cord on the threshold of a car when the door is closed. [Structure] An additional actuating piece 12 is provided at the lower end of the actuating piece 7, and a second groove 11 is provided in the sill 4 along the passage direction of the operating piece 7, and the additional actuating piece 12 is provided with the second groove 11.
Since the string state 13 always contacts the additional operating piece when the door 1 is closed, the string state 13 can be reliably detected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a safety device for an entrance door of an elevator.

[0002]

[Prior Art]

 Generally, the door of the car is guided by the first groove provided in the sill and is opened and closed left and right by electric power. The elevator door safety device is suspended by a pair of links for advancing and retracting to the front end of the door, for example, as shown in Japanese Utility Model Laid-Open No. 55-50023. , An operating piece for rotating upward, and a switch for reversing or stopping the door closing operation by retreating the operating piece during the closing operation or full opening of the door. .

[0003]

[Problems to be solved by the device]

 However, it is difficult to provide the operating piece over the entire height of the door due to the structure, and a certain distance is maintained between the lower end of the door and the floor. Therefore, when a cord with a small cross section such as a cord is in contact with the floor, this cord may pass through the gap between the threshold and the operating piece, and this cord may not be detected. Therefore, the elevator starts moving with the string state sandwiched at the bottom of the tip of the door. This string state is a cord of an electric vacuum cleaner that is cleaning the neighborhood in some cases, and it is a chain of pets in some cases, which is very dangerous.

An object of the present invention is to provide a safety device for an elevator door having an operating piece that can detect even a string state in contact with the floor.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is hung by a pair of links for advancing and retracting at the tip of a door guided by a first groove of a sill, and when the advancing state moves to the retracting state, Of an elevator equipped with an operating piece that can rotate in the same direction, and a switch that operates by the retracting operation of the operating piece during the closing operation of the door or when the door is fully opened to reverse or stop the closing operation of the door. In the door safety device, a second groove is provided in the sill along the passage position of the operating piece and extends below the lower end of the operating piece and is guided by the second groove. It is provided with an additional actuating piece.

[0006]

[Action]

 According to the present invention, since the additional actuating piece that extends downward and is guided to the second groove is provided at the lower end of the actuating piece, a string-like state with a small cross section is placed on the floor at the bottom of the door tip. However, since the operating piece surely retracts, the switch is activated and the door is in the open state, which prevents the elevator from starting with the string state in between.

[0007]

【Example】

 An embodiment of an elevator door safety device according to the present invention will be described below with reference to FIGS.

FIG. 1 is a front view of a car door, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a plan view of FIG.

In the figure, a door 1 is freely suspended by a suspension roller 3 that rolls on a rail 2 that is fixed above when it is opened and closed left and right, and the lower part is a first groove in a sill 4 below. It is guided by a shoe 6 that slides on 5. Numeral 7 is an operating piece 10 which is attached to the tip of the door 1 in the front-back movement direction by links 9a and 9b which are rotatably supported by fulcrums 8a and 8b fixed to the door 1, respectively. A switch, 11 is a second groove of the threshold 4 provided along the passage position of the actuating piece, and 12 is an additional actuating piece attached to the lower part of the actuating piece 7, which is guided to the second groove 11. . Reference numeral 13 is a foreign object such as a cord that is in contact with the sill 4, 14 is a U-shaped member provided at the closed end of the door, and when the door 1 is closed, the operating piece 7 and the additional operating piece 12 are the members of this member 14. Interpolated inside.

Next, the operation of this embodiment will be described.

If the sill 4 does not have the string state 13, the operating piece 7 moves in that state in response to the closing operation of the door 1 and is inserted into the member 14 at the closed end of the door 1.

Next, when the sill 4 has the string state 13, the additional actuating piece 12 hits the string state 13 in accordance with the closing operation of the door, and the string state 13 is moved toward the closed end portion to move the string state. When 13 comes into contact with the member 14, it stops there, so that the additional actuating piece 12 retracts and the switch 10 operates, causing the door 1 to move backward, so that the elevator does not start with the string state 13 in between. .

[0013]

[Effect of the device]

 According to the present invention, an additional actuating piece is provided along the passage position of the actuating piece, the second actuating piece being provided in the sill and extending below the lower end portion of the actuating piece and being guided in the second groove. As a result of the provision of the door, even if the string state of being in contact with the floor at the bottom of the door tip is sandwiched, the elevator moves in the string state as the additional operation piece retracts, causing the operation piece to retract and operate the switch. The effect is that it can be prevented from starting up.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an elevator door safety device according to the present invention.

FIG. 2 is a side view of a door of a car.

FIG. 3 is a plan view of a door of a car.

[Explanation of symbols]

 1 Door 4 Sill 5 First Groove 7 Actuating Piece 10 Switch 11 Second Groove 12 Additional Actuating Piece

Claims (1)

[Scope of utility model registration request] 1. A door is guided by a first groove of a sill, and is suspended by a pair of links for advancing and retracting at the tip of the door. On the other hand, when moving from an advancing state to a retracting state, it is turned upward. In the door safety device for an elevator, the switch is provided with a different operating piece, and when the door is closed or when the door is fully opened, it is operated by the backward movement of the operating piece to reverse or close the door closing operation. A second groove is provided in the sill along the passage position of the operating piece, and an additional operating piece that extends below the lower end of the operating piece and is guided by the second groove is provided. Elevator door safety device characterized by.