JP4142177B2 - Elevator door safety device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator door safety device that detects a passenger or the like when the car-side door and the landing-side door of the elevator collide with a passenger or the like while the door is closed.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a safety shoe is provided on an elevator car-side door in order to ensure the safety of a passenger when the door collides with a passenger while the door is closed. The safety shoe is bar-shaped and protrudes slightly from the tip of the car door. When this safety shoe hits a passenger, it is pushed and pulled by the passenger's body, and the built-in switch is activated to To detect. If it does so, a car side door and a landing side door will reverse, and a passenger's safety will be secured.
[0003]
[Problems to be solved by the invention]
However, since such a conventional safety shoe is provided only on the car side door, the car side door will not operate unless it hits the passenger before the landing side door. The landing side door hits the passenger's body, and there was a problem that the safety of the passenger was not ensured.
[0004]
An object of the present invention is to make it possible to immediately detect whether a car-side door or a landing-side door hits a passenger first.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, an elevator door safety device according to the present invention has a substantially L-shaped cross section with a vertically long tip portion provided swingably on a car side door. member and, means for the distal end of the engaging member is biased to retract into the cage threshold, and said engagement tip car-side door and the landing-side door when engagement member provided on the landing-side door and the engaged members to enable interlocking and driving means for opening and closing through the engaging portion of the car-side door, the fastening to provided on the back side with the engaging portion and play engaging wear of the engaging member And a detecting means for detecting a state where the play is lost and the engaging portion is engaged with the engaged member, and the car-side door or the landing-side door is in the opposite direction during the door closing operation. When receiving the force to cause play to engage wear between the engaging portion and the Hikakarigi member No longer, the detection means a state of no longer this fastening is characterized that you detected.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings. 1 to 5 are views showing an embodiment of an elevator door safety device according to the present invention.
[0007]
As shown in FIG. 1, a hanger 2 is provided on the upper end side of the car-side door 1, and the hanger 2 is slidably supported on a door rail (not shown) via a roller 3. The hanger 2 is provided with a support member 6 having a pin 5, and a car cam (engagement member) 4 having a substantially L-shaped cross section and extending in the vertical direction swings on the pin 5. It is supported freely.
[0008]
As shown in FIG. 2, the car cam 4 is located in a notch 2a formed in the hanger 2, and the car cam 4 can swing through the notch 2a. The urging force of the spring 7 attached to the pin 5 acts on the car cam 4, and the urging force causes the car cam 4 to rotate counterclockwise in FIG. 2. The tip 4a of the car cam 4 is located between a pair of stopper portions 8 and 9 provided on the hanger 2. The stopper portion 8 prevents the clockwise rotation of the car cam 4 at a predetermined position, and the stopper portion 9 is counterclockwise. Is prevented at a predetermined position.
[0009]
Further, an engaged member 10 having a substantially U-shaped cross section is provided on the rear surface side (the upper surface side in FIG. 2) of the car cam 4, and a pressing roller (engaging portion) 11 is provided on the engaged member 10. Are in contact with each other and are inserted with play between the both end portions 10a and 10b. Moreover, the limit switch 22 is provided in the one end part 10a of the to-be-engaged member 10, This limit switch 22 detects the state which the press roller 11 contact | abutted and engaged with the one end part 10a.
[0010]
The pressing roller 11 is provided on the support member 12. When the pressing roller 11 moves to the right in FIG. 2 together with the support member 12, the pressed member 10 is pressed to rotate the car cam 4 against the urging force of the spring 7, and this tip 4 a is projected from between the stopper portions 8 and 9. Then, the tip 4a of the car cam 4 enters and engages between a pair of engaging rollers 14a and 14b (engaged members) provided on the landing door 13 as shown in FIG. Further, the pressing roller 11 can be engaged with both end portions 10 a and 10 b of the engaged member 10. When the pressing roller 11 is engaged with one end 10 a of both ends, the car-side door 1 is opened and closed via the engaged member 10.
[0011]
The landing-side door 13 always receives an urging force (door closing force) of a closer spring (not shown). The car door 1 also receives the closing force of the closer spring through the car cam 4 and the engaging rollers 14a and 14b when the tip 4a of the car cam 4 protrudes and engages with the engaging rollers 14a and 14b. ing. For this reason, the car-side door 1 receives the door closing force of the closer spring, and the one end 10 a of the engaged member 10 is in contact with and engaged with the pressing roller 11.
[0012]
A support member 12 that supports the pressing roller 11 is fixed to a belt 15, and as shown in FIG. 1, the belt 15 is hung on a driven pulley 16 and a drive pulley 17 disposed above the door 1. The drive pulley 17 is rotated by a motor 18. The support member 12 is slidably engaged with a guide rail 19 disposed in the opening / closing direction of the door 1.
[0013]
As shown in FIG. 4, when the pressing roller 11 does not press the engaged member 10, the car cam 4 receives a counterclockwise biasing force by the biasing force of the spring 7, and the tip 4 a is between the stopper portions 8 and 9. It does not protrude from the car side sill 20. Thus, when the front end 4a of the car cam 4 is located between the stopper portions 8 and 9, the car side sill 20 does not protrude. Therefore, the car-side sill 20 can be disposed close to the landing-side sill 21 and the running clearance can be set to about 10 mm, for example.
[0014]
Immediately after the car has landed, the tip 4a of the car cam 4 is located between the stopper portions 8 and 9 by the urging force of the spring 7, that is, located in the car side sill 20.
[0015]
Then, turning the belt 15 by driving the motor 18, the pressing roller 11 by pressing the Hikakarigi member 10, Kakamu 4 together with the Hikakarigi member 10 is rotated in the clockwise direction in FIG. 3, the stopper portion 8 Is prevented from rotating, and the tip 4a protrudes from the car side sill 20. At this time, the pressing roller 11 is in contact-engaged with one end portion 10a of the fastening member 10, the engaging condition will be detected by the limit switch 22.
[0016]
Then, as shown in FIG. 5, the tip 4 a of the car cam 4 is positioned and engaged between a pair of engagement rollers 14 a and 14 b (engaged members) provided on the landing-side door 13. Next, since the pressing roller 11 is engaged with the one end portion 10a of the engaged member 10, the car-side door 1 is opened, and at the same time, the landing-side door 13 is also connected via the car cam 4 and the engaging rollers 14a and 14b. Open.
[0017]
In order to close the car side door 1 and the landing side door 3, the rotational force of the motor is weakened. Then, the door closing force of the closer spring becomes stronger, and the landing side door 13 and the car side door 1 are closed by the door closing force of the closer spring. For this reason, the one end part 10a of the to-be-engaged member 10 will press the press roller 11, and the limit switch 22 has detected the state in which the press roller 11 is pressing the one end part 10a.
[0018]
Here, when the doors 1 and 13 come into contact with the passengers getting on and off during the closing operation of the car side door 1 and the landing side door 13, the doors 1 and 13 are moved in a direction opposite to the door closing direction. Pushed back. When the car-side door 1 is pushed back, the one end 10a of the engaged member 10 integrated with the car-side door is separated from the pressing roller 11, and the limit switch 22 detects this separated state. The limit switch 22 outputs the detection signal in the separated state to the control panel, and the doors 1 and 13 are reversed and opened by the command of the control panel. As a result, passenger safety is ensured.
[0019]
At this time, since the pressing roller 11 is inserted with play between the both end portions 10a and 10b of the engaged member 10, when the car-side door 1 is pushed back, the pressing roller 11 is moved from the one end portion 10a. You can leave easily. Moreover, even if the landing side door 13 is pushed back, the car side door 1 is pushed back via the engaging rollers 14a and 14b and the car cam 4, and similarly, the pressing roller 11 can be easily separated from the one end portion 10a.
[0020]
On the other hand, when the car-side door 1 and the landing-side door 13 are of the double-open type instead of the single-open type, and the door on which the limit switch 22 is not provided is pushed back, The door provided with the limit switch 22 is pushed back.
[0021]
【The invention's effect】
As described above, according to the present invention, when the car-side door or the landing-side door receives a force in the opposite direction during the door closing operation, play occurs between the engaging portion and the engaged member. Since the detection means detects the state where it is no longer engaged, it hits when the door on the car side or the door on the landing side hits the body of the passenger getting on and off. This can be detected immediately, and as a result, the safety of passengers can be ensured.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an elevator door safety device according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a plan view of the same.
FIG. 4 is a side view of the same.
FIG. 5 is a side view of the same.
[Explanation of symbols]
1 ... car-side door, 2 ... hangers, 4 ... Kakamu (engaging member), 7 ... spring, 10 ... Hikakarigi member, 11 ... pressing roller (engaging portion), 13 ... landing side door, 14a, 14b ... Engagement roller (member to be engaged), 19 ... guide rail, 22 ... limit switch.

Claims (1)

An engagement member having a substantially L-shaped cross section having a vertically long tip portion provided swingably on the car side door ;
Means for biasing the engaging member so that the tip of the engaging member is pulled into the car sill;
An engaged member that is provided on a landing-side door and that allows the car-side door and the landing-side door to be interlocked with each other when the tip of the engaging member is engaged;
Driving means for opening and closing the car side door via the engaging portion;
A to-be-engaged member provided on the back side of the engaging member and to be engaged with the engaging portion with play;
Detecting means for detecting a state in which the play is lost and the engaging portion is engaged with the engaged member;
When the car side door or the landing side door receives a force in the opposite direction during the door closing operation, play is generated between the engaging portion and the engaged member, and the engagement is stopped. elevator door safety device state detection means, wherein the Ruco be detected.

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