JPS63147794A - Release device of platform-side door for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an unlocking device for a door on the passenger side of an elevator, which is generally called a retiring cam device.

(Prior art) An elevator has a door on the side of the car that runs on the hoistway, and a door on the landing side that is provided for each floor of the building. Normally, for safety, the door on each landing side is closed. It is locked by a locking mechanism. When the car reaches the landing zone of a predetermined floor, the locking mechanism is unlocked by the unlocking device provided on the car, and then the locking mechanism is unlocked on the car side and landing area based on the N magnetic mechanism on the car side. Both side doors are opened integrally, making it possible to get on and off the car.

This type of unlocking device will be briefly described in detail with reference to FIG. A lever 3.3 is rotatably mounted, and a press plate 4 is vertically supported via these link levers 33, and this press plate 4 is moved against the front surface of the car 1 in response to the rotation of the link lever 3.3. It is designed to move parallel to the approaching and separating directions.

A solenoid 5 is provided at the upper end of the frame 2, and this solenoid 5 consists of an electromagnetic coil 7 housed in a cover 6 and a plunger 8 attracted by the electromagnetic coil 7. One link lever 3
A spring 9 is attached to the plunger 8, and the spring 9 elastically urges the plunger 8 downward. A bracket 10.10 is provided on each of the frame 2 and cover 6, and a screw shaft 11.11 is attached to each of these brackets 10.10 so as to be able to be screwed back and forth, and a plate 11a is attached to one end of the screw shaft 11.11. A stop 12.12 is attached via 11a. These stoppers 12.12 are the sixth
As shown in the figure, it is formed into a columnar shape from an elastic body such as rubber, and one stopper 12 faces the upper end of the plunger 8, and the other stopper 12 faces the lower end. The range of movement during operation is restricted.

Reference numeral 15 denotes a door on the landing side, and this door 15 is suspended via a hanger 16 and is moved to open and close along the width direction of the car 1. This door 15 is provided with a locking mechanism 17. Describing this locking mechanism 17, 18 is a support rod, a sleeve 19 is rotatably fitted around the outer periphery of this support rod 18, and a lock lever is attached to this sleeve 19. -20 and the actuating lever 21 are each integrally attached. The lock lever 20 is bent into an L shape, and one end of the lock lever 20 comes into contact with one side edge of the hanger 16. Due to this contact, the door 15 is locked, and the operating lever 21
A roller 22 is rotatably attached to one end of the press plate 4, and this roller 22 faces the press plate 4.

Thus, when the car 1 is traveling, the electromagnetic coil 7 is excited, the plunge v8 is attracted by the electromagnetic coil 7, and the pressing plate 4 is held in a state separated from the roller 22 of the locking mechanism 17. When the car 1 reaches the landing zone of a predetermined floor from this state, the electromagnetic coil 7 is demagnetized and the attractive force on the plunger 8 disappears, so that the plunger 8 absorbs the biasing force of the spring 9. and decreases depending on the amount of output. As the plunger 8 descends, the link lever 3.3 rotates counterclockwise, and the pressing plate 4 moves parallel to the front of the car 1 and comes into contact with the roller 22 of the locking mechanism 17, causing the roller 22 to move. Press. This pressing causes the operating lever 21 to rotate counterclockwise together with the lock lever 2o, and this rotation causes the lock lever 20 to retreat from the side edge of the hanger 16, thereby unlocking the door 15. , the door 15 becomes openable, and then both the door 15 on the landing side and the door (not shown) on the car 1 side are opened simultaneously.

When the car 1 starts running again, the door 15 on the landing side and the door on the car 1 side are closed, the electromagnetic coil 7 is energized, the plunger 8 is raised, and the pressure plate 4
is separated from the roller 22, the operating lever 21 and the lock lever 20 are rotated clockwise, and the lock lever 20 comes into contact with and engages the side edge of the hanger 16, whereby the door 1
5 is locked again.

Although the plunger 8 moves up and down in this way, the upper and lower ends of the plunger 8 come into contact with the stoppers 12.degree. 12 each time, and the range of movement thereof is properly regulated.

(Problems to be Solved by the Invention) As the electromagnetic coil 7 is demagnetized, the plunger 8 descends with increasing acceleration due to the biasing force and extension amount of the spring 9. Further, when the electromagnetic coil 7 is excited, the plunger 8 is attracted and rises, but at this time, as shown in FIG. Indeed, it increases exponentially, which causes it to rise with increasing acceleration as well. Therefore, both when the plunger 8 descends and ascends, the plunger 8 increases in speed and collides with the stopper 12 with force.

However, as mentioned above, the conventional stopper 12 is made of an elastic body and has a simple cylindrical shape. Therefore, when the plunger 8 collides with the stopper 12, it stops suddenly and a loud collision sound is generated. There is a problem in that the sound reverberates not only inside the car 1 but also in the landing area, causing discomfort to not only the passengers inside the car 1 but also the people on each floor. This invention was made with attention to these points, and an object of the present invention is to provide an unlocking device on the landing side of an elevator that suppresses the collision noise of the plunger against the stopper and allows the elevator to operate quietly. This is what I did.

(Structure of the invention) (Means for solving the problems) In order to solve the above-mentioned problems, this invention is provided in a car, and when the car reaches the landing zone of a predetermined floor. In this case, the lock mechanism of the landing side door is unlocked by the operation of a solenoid plunger, and the movement range of the plunger is restricted by colliding with a stopper.
The stopper is configured to have an elastic structure that compresses and deforms in a nonlinear state in response to a collision of the plunger.

(Function) When the plunger collides with the stopper, the stopper is elastically compressed and deformed in a non-linear state, so that the energy of the collision is gradually absorbed and the plunger comes to a gentle stop, thereby suppressing the collision noise. Ru.

(Example) Examples of the present invention will be described below.

A first embodiment is shown in FIG. 1, and a stopper 12a in this embodiment is made of an elastic body such as rubber, and includes a cylindrical portion 30 having the same diameter at each part, and a cylindrical portion 30 that tapers from the end surface of the cylindrical portion 30. It is composed of a conical part 31 that integrally projects in a shape, and a cavity 32 extending from the cylindrical part 30 to the conical part 31 is formed inside. The end face of one end of the plunger collides with the top of the conical portion 31 in accordance with the operation of the plunger.

In such a stopper 12a, the conical portion 31 is easily elastically compressed and deformed with a relatively small force, and as the compressive deformation progresses, the reaction force thereof gradually increases. In other words, the stopper 12a is compressed and deformed in a nonlinear state. Therefore, when the plunger collides with this stopper 12a, its energy is gradually absorbed, and the plunger gradually slows down and stops.

To briefly describe this in comparison with conventional stoppers, the second
As shown in the figure, in the conventional stopper, the stopper is compressively deformed in a linear state, so when the plunger collides with the stopper, the stopper is only compressively deformed by α, and therefore the plunger stops abruptly. , a loud collision sound will occur.

On the other hand, in the embodiment of the present invention, the stopper is compressively deformed in a nonlinear state, so that when the plunger collides with this stopper, the compressive deformation a of the stopper is β(
α+A), and therefore the plunger stops while gradually slowing down, thereby suppressing the collision sound.

Note that the present invention is not limited to the first embodiment, and for example, as shown in FIG. 3 as a second embodiment,
A substantially hemispherical protrusion 34 may be integrally provided on the upper surface of the solid cylindrical portion 33 to serve as a stopper 12b, or
As shown in this embodiment, a cylindrical portion 36 of substantially the same shape also made of a soft elastic material is attached to the top surface of a solid cylindrical portion 35 made of a relatively hard elastic material with adhesive or the like to form a stopper 120. Also, such stoppers 12b and 12c are compressively deformed in a nonlinear state when the plunger collides, so that the collision noise is suppressed.

〔Effect of the invention〕

As explained above, according to the present invention, the stopper is configured to have an elastic structure that is compressively deformed in a non-linear state, so that when the plunger collides with the plunger, the plunger can be stopped gently and the impact can be sufficiently absorbed. This has the effect of suppressing the collision noise of the plunger against the stopper and realizing quiet operation of the elevator.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention, Fig. 2 is an explanatory drawing showing the characteristics of the same actual journey in comparison with the conventional one, and Fig. 3
The figure is a front view showing the second embodiment of the present invention, FIG. 4 is a sectional view similarly showing the third embodiment, FIG. 5 is a configuration diagram of a conventional i-side door unlocking device, and FIG. The figure is a cross-sectional view of a stopper used in the device, and FIG. 7 is an explanatory diagram illustrating the state of action of the suction force on the plunger of the solenoid. 1... Car, 5... Solenoid, 8... Plunger, 15... Door, 17... Lock dawn structure, 12
a. 12b, 12c...stoppers. Applicant's agent Patent attorney Takehiko Suzue Figure 5

Claims (1)

[Claims] When the car reaches the landing zone of a predetermined floor, the solenoid plunger operates to unlock the locking mechanism of the landing side door, and also causes the plunger to collide with a stopper. What is claimed is: 1. An unlocking device for a landing side door of an elevator, which restricts a movement range, wherein the stopper has an elastic structure that compresses and deforms in a nonlinear state in response to a collision with a plunger.