JPH1143268A - Push-button device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push-button device of an elevator on which maintenance work can be easily performed by automatically detecting stop-up of a push button, that is, abnormality of an advance position return of a button body. SOLUTION: A button body 14 is slidably fitted into a button frame 12, and a fixed contact point 15 is also arranged on the button frame 12, and a movable contact point 16 is arranged on the button body 14. A return spring 17 to hold it in an advance position by energizing the button body 12 and a pressure detector 18 to detect pressure of the return spring 17 are also provided. When output exceeding a prescribed value exists in the pressure detector 18 when a prescribed time passes after pressing the button body 14, the occurrence of abnormality by stop-up of the button frame 14 is detected by a control means 19. Therefore, a stop-up causing push button 8 can be easily specified, and the cause of a malfunction by abnormality of the push button 8 can be easily investigated, and maintenance work efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator push button device used as a call registration button or the like.

[0002]

2. Description of the Related Art FIGS. 4 to 6 show a conventional elevator push-button device. FIG. 4 is a longitudinal sectional view conceptually showing the elevator device, and FIG. 5 is a front view of a landing of the elevator device of FIG. FIGS. 6 and 7 are side views showing the landing button of FIG. In the figure, 1 is an elevator hoistway, 2 is a machine room provided on the hoistway 1, 3 is a hoisting machine installed in the machine room 2, 4 is a hoisting machine wound around the hoisting machine 3. A main rope suspended at 1 has a car 5 connected to one end and a counterweight 6 connected to the other end.

Reference numeral 7 denotes a landing provided on the hoistway 1 at a distance from each other, 8 denotes a push button comprising a landing button provided on the landing 7,
Is a landing position indicator provided in the landing 7, and 10 is the machine room 2.
And a control device connected to the hoist 3, the push button 8, the landing position indicator 9, and the like. The push button 8 is configured as described below.

That is, a front plate 11, a cylindrical button frame 12 provided on the back surface of the front plate 11, and a pressing portion 13 slidably fitted to the button frame 12 and protruding from the surface of the front plate 11 are formed. Button body 14, fixed contact 15 provided on button frame 12, button body 1
4, a movable contact 16 disposed opposite the fixed contact 15 and a return spring 17 for urging the button body 14 to normally hold the button body 14 at the forward position.

[0005] The conventional push button device for an elevator is constructed as described above, and the button body 14 is moved by the return spring 17 to the front plate 1.
It is urged in one direction. Thereby, the pressing portion 13 is arranged at a predetermined position protruding from the surface of the front plate 11, and the fixed contact 15 and the movable contact 16 are opened.

When the push button 8, that is, the pressing portion 13 is pressed against the urging force of the return spring 17, the button body 14
Is retired, and the fixed contact 15 and the movable contact 16 are closed. As a result, the hall call by the push button 8 is registered, the control device 10 operates, an operation command is issued to the hoist 3, and the car 5 moves up and down according to the operation command. When the pressing of the pressing portion 13 is released, that is, when the person pressing the push button 8 releases his / her hand, the button body 14 returns to the previous forward position by the action of the return spring 17.

[0007]

In the conventional push button device for an elevator as described above, when the pressing portion 13 is pressed and then the pressing is released, the button body 14 moves to the operating axis of the button body 14. May lean against. In this state, since the button body 14 is urged toward the front plate 11 by the return spring 17, the inclined button body 14 is pressed against the inner surface of the button frame 12, and the inner surface of the button frame 12 and the button body are pressed. 14 generates a frictional force.

[0008] Even though the pressing force of the pressing portion 13 is released due to the frictional force, the button body 14 is not returned to the forward position and is restrained in a retired state. Occur. In some cases, the fixed contact 15 and the movable contact 16 of the push button 8 in the cut-off state may be held in a closed state. For this reason, the hall call registration by the push buttons 8 occurs continuously, and the car 5 repeats unnecessary lifting and lowering. There is a problem that it is not easy to specify the push button 8 and the troublesome recovery is required.

It is difficult to find the spot of the push button 8 when the spot of the push button 8 continues and the closed state of the fixed contact 15 and the movable contact 16 is not maintained. Also,
In some cases, the warpage of the push button 8 is canceled by the push button 8 being pressed again. Therefore, it is not easy to find the cause of a problem such as abnormal elevation of the car 5 due to the button button warpage, and it is difficult to perform maintenance and inspection.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide an elevator push button device for automatically detecting a spot of a push button, that is, an abnormal return of a button body to a forward position. .

[0011]

In an elevator push button device according to the present invention, a button body slidably fitted to a button frame, a fixed contact provided on the button frame and a button body provided on the button body are provided. A movable contact disposed opposite to the fixed contact, a return spring for urging the button body to be normally held at the forward position, and provided between an end of the return spring and a support member of the return spring. A pressure detector is provided, and control means is operated by an output of the pressure detector exceeding a predetermined value and exceeding a predetermined time.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 to 3 are views showing an example of an embodiment of the present invention. FIG. 1 is a side view showing a push button in an enlarged manner and partially longitudinally similar to FIG. 5 described above, and FIG. FIG. 3 is a side view showing the pressed state of the push button, and FIG. 3 is a flowchart for explaining the operation of the control means provided corresponding to the push button of FIG. Except for FIGS. 1 to 3, the elevator apparatus is configured similarly to the above-described FIGS. 4 to 6. In the figure, reference numeral 8 denotes a push button composed of a landing button provided at the landing, which is configured as described below.

That is, a front plate 11, a cylindrical button frame 12 provided on the back surface of the front plate 11, and a pressing portion 13 slidably fitted to the button frame 12 and protruding from the surface of the front plate 11 are formed. Button body 14, fixed contact 15 provided on button frame 12, button body 1
4, a movable contact 16 disposed opposite to the fixed contact 15, a return spring 17 for urging the button body 14 to normally maintain the forward position, and an end of the return spring 17 and support of the return spring 17. A pressure detector 18 provided between the members and a control means 19 connected to the pressure detector 18 and the like are provided.

In the elevator push button device configured as described above, the button body 14 is urged toward the front plate 11 by the return spring 17. Thereby, the pressing portion 13 is arranged at a predetermined position protruding from the surface of the front plate 11, and the fixed contact 15 and the movable contact 16 are opened. When the push button 8, that is, the pressing portion 13 is pressed against the urging force of the return spring 17, the output of the pressure detector 18 increases due to the pressing of the pressing portion 13.

By the pressing of the pressing portion 13, the button body 14 retreats as shown in FIG. 2, and the fixed contact 15 and the movable contact 16 are closed. As a result, the hall call by the push button 8 is registered, the control device 10 operates, an operation command is issued to the hoist 3, and the car 5 moves up and down according to the operation command. The pressing of the pressing portion 13 is released, that is, the push button 8
When the person who presses the button releases, the button body 14 returns to the forward position by the action of the return spring 17, and the fixed contact 15 and the movable contact 16 are opened. In addition, the output of the pressure detector 18 decreases due to the return of the button body 14.

The operation of the elevator push button device will be described with reference to the flowchart shown in FIG. That is, initial settings are appropriately performed in step 101, and the flow proceeds to step 102, and when the push button 8 is pressed, the flow proceeds to step 103. Then, in step 103, if the fixed contact 15 and the movable contact 16 are not closed and a switch signal is not detected, the process proceeds to step 104.

If there is no output exceeding the predetermined value of the pressure detector 18 in step 104, the process returns to step 102. If there is an output exceeding the predetermined value of the pressure detector 18 in step 104, the process proceeds to step 107 described later. If the fixed contact 15 and the movable contact 16 are closed in step 103 and a switch signal is detected, the process proceeds to step 105.

If there is no output exceeding the predetermined value of the pressure detector 18 in step 105, the process proceeds to step 107 described later. If there is an output exceeding the predetermined value of the pressure detector 18 in step 105, the process proceeds to step 106, which will be described later. The hall call by the push button 8 is registered, and the process proceeds to step 107.

Next, when a timer count is performed in step 107 and a predetermined time elapses, step 10 is executed.
Proceed to 8. If the registration of the hall call by the push button 8 has not been deleted in Step 108, Step 1
In step 09, the abnormality of the push button 8 is detected by the control unit 19. By this detection, the control device 10 identifies the push button 8 in which the abnormality has occurred, and performs appropriate visual and audible notification, and records the occurrence of the abnormality in the push button 8 by appropriate means.

In short, in short, after the push button 8, that is, the pressing portion 13 is pressed, a predetermined time by the timer count elapses regardless of the detection of the switch signal by the fixed contact 15 and the movable contact 16, for example. In some cases, the output of the pressure detector 18 exceeds a predetermined value. In this situation, even if the pressing portion 13 of the push button 8 is pressed and the pressing is released, an abnormality due to the warpage of the push button 8 occurs, and the button body 14 does not return to the forward position and is restrained in the retired state. Is determined by the control means 19 and detected.

By this detection, appropriate visual and audible notification is made by the control means 19 or the control device 10, and
Further, occurrence of abnormality of the push button 8 is recorded by an appropriate means. Therefore, it is possible to easily identify the push button 8 that has caused the warpage, and to easily find the cause of a malfunction such as abnormal elevation of the car 5 due to the warpage of the push button 8. Therefore, appropriate maintenance and inspection can be easily performed, and recurrence of a defect caused by the spot on the push button 8 can be prevented.

After the pressing portion 13 is pressed, regardless of the detection of the switch signal by the fixed contact 15 and the movable contact 16, the predetermined value of the pressure detector 18 is exceeded after the predetermined time by the timer count has elapsed. When a situation occurs in which the output has occurred, the occurrence of an abnormality due to the warpage of the push button 8 is detected.

For this reason, even when there is no continuous closing of the fixed contact 15 and the movable contact 16 due to the cell abnormality of the push button 8, even when there is no substantial malfunction of the elevator, the cell contact of the push button 8 can be prevented. An abnormality is detected. Therefore,
Preventive maintenance work can be performed on the push button 8 in which the cell abnormality has occurred, and the elevator function can be well maintained.

[0024]

As described above, the present invention provides a button body slidably fitted to a button frame, a fixed contact provided on the button frame, and a fixed contact provided on the button body facing the fixed contact. A movable contact disposed thereon, a return spring for urging the button body to normally maintain the forward position, a pressure detector provided between an end of the return spring and a support member of the return spring, and a predetermined value. And a control means that is operated by the output of the pressure detector over a predetermined period of time.

With this arrangement, if there is an output exceeding a predetermined value of the pressure detector in a state where a predetermined time has elapsed after the button body of the push button is pressed, an abnormality due to the button body of the button body occurs. Even if the pressing of the button body is released, the control means detects that the button body does not return to the forward position and is restrained in the retired state. Therefore, it is possible to easily identify the push button that has caused the warpage, and to easily find the cause of a malfunction such as abnormal elevation of the car due to the warpage of the push button. Therefore, it is possible to easily carry out appropriate maintenance and inspection, thereby improving the efficiency of maintenance work, and preventing the failure caused by the push button from recurrence.

[Brief description of the drawings]

FIG. 1 is a view showing Embodiment 1 of the present invention, and is a side view showing a push button in an enlarged manner and partially in a longitudinal direction.

FIG. 2 is a side view showing a pressed state of the push button in FIG. 1;

FIG. 3 is a flowchart illustrating an operation of a control unit provided corresponding to the push button in FIG. 1;

FIG. 4 is a view showing a conventional push button device of an elevator, and is a longitudinal sectional view conceptually showing the elevator device.

FIG. 5 is a front view of a landing of the elevator device of FIG. 4;

6 is an enlarged side view of the hall button of FIG.

[Explanation of symbols]

12 button frame, 14 button body, 15 fixed contact, 16 movable contact, 17 return spring, 18 pressure detector, 19 control means.

Claims (1)

[Claims] A button body slidably fitted to the button frame, a fixed contact provided on the button frame, and a movable contact provided on the button body and opposed to the fixed contact. A return spring for urging the button body and always holding it in the forward position; a pressure detector provided between an end of the return spring and a support member of the return spring; A push-button device for an elevator, comprising: a control unit that operates according to an output of the pressure detector that has exceeded the time.