JPS5917031B2 - elevator equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to an elevator system.

Generally, elevator car doors are not provided with locking devices.

Therefore, when the elevator goes up or down, the fully closed car door is urged in the door closing direction by the drive motor of the car and is held in the fully closed position.

However, when a failure occurs in the elevator and a safety device is activated, the power supply to the elevator may be cut off, and a similar situation occurs when a power outage occurs.

At this time, the biasing force in the door closing direction is cut off, so that the car door can be easily opened manually.

For this reason, when the car abnormally stops at a position corresponding to the landing, that is, outside the normal stop zone, passengers inside the car may manually open the car door and try to escape from the car, causing them to fall into the hoistway. is possible.

It is also conceivable that a passenger may manually open the car door when going up or down, resisting the biasing of the car door in the door closing direction, and there is a risk that an accident may occur due to this manual door opening.

The present invention aims to eliminate the above-mentioned drawbacks and provides an elevator system that prevents the car door from opening during the elevator car's ascent or descent or when it stops abnormally.

An embodiment of the present invention will be described below with reference to FIG. 1.2.

In the figure, 1 is a hoistway, 2 is a car that lifts and lowers the hoistway, 3 is a door device provided at the base 2, 4 is a car door consisting of a sliding door, and 5 is a protrusion provided on the car door 4. , 6 heels 2
This is an engagement device consisting of a movable body whose middle portion is pivotally attached to the bottom end, and a hook 6a that engages with the protrusion 5 is provided at one end, and a roller 6b is pivotally attached to the other end.

Reference numeral 7 denotes a biasing body consisting of a torsion spring that biases the engagement device 6 in the counterclockwise direction in FIG. A blocking piece 9 for restricting the heel 2, a holding device consisting of an electromagnet which is biased and attracts the hook 6a of the engagement device 6 during the ascent and descent of the heel 2, a holding device 10 provided in the hoistway 1, and a heel 2 attached to the elevator landing ( (not shown), that is, outside the normal stop section of the car 2.

Assuming that the car 2 is now stopped in the normal stop zone, the holding device 9 is deenergized and the blocking body 10 is not arranged, so the biasing force of the biasing body I causes the retaining device 6 to It is arranged at position A, that is, a non-engaged position, as indicated by a two-dot chain line in the figure.

When the engagement device 6 is in the A position, the hook 6a and the protrusion 5 do not face each other, so that the car door 4 can be opened to the right in FIG.

When the car 2 begins to move up and down, the holding device 9 is energized, which attracts the hook 6a and holds the engaging device 6 at position B shown in solid line in FIG.

In this state, the hook 6a is in the first engagement position facing the protrusion 5, so that the car door 4 is prevented from opening.

Note that when the engagement device 6 is in the B position, a gap G is formed between the roller 6b and the extension line of the blocking body 10, so that the roller 6b does not come into contact with the blocking body 10 when the car 2 is raised or lowered. do not have.

Furthermore, if the heel 2 abnormally stops while being raised or lowered, the holding device 9 is deenergized and the engagement device 6 rotates counterclockwise.

However, in this case, since the stopping position of the heel 2 is outside the normal stopping area, the roller 6b comes into contact with the blocking body 10, and the engaging device 6 stops at the C position shown by the dashed line in FIG.

In this state, a portion of the hook 6a is in the second engagement position facing the protrusion 5, thereby preventing the car door 4 from opening.

In this manner, the car door 4 is locked by the engagement device 6 when the heel 2 is being raised or lowered or when it stops abnormally.

Therefore, accidents caused by the car door being opened at times other than when the heel 2 is normally stopped can be prevented.

Fig. 3 shows another embodiment of the present invention. In the figure, the same reference numerals as in Figs. The roller 6b is an engagement device in which the roller 6b is connected by a well-known transmission member 6c, which is a flexible cylindrical body and a flexible strip inserted loosely therethrough.

That is, the engaging device 6 operates in the same manner as the embodiments shown in FIGS. 1 and 2 by means of the holding device 9 and the blocking body 10.

Therefore, although a detailed explanation will be omitted, it is clear that the same effects as the embodiments shown in FIGS. 1 and 2 can be obtained in this embodiment as well.

Since the transmission member 6C is used in this embodiment, the roller 6b can be freely positioned to the left of the hook 6a of the engagement device 6, that is, the blocking body 10 can be freely positioned.

Therefore, restrictions on the arrangement of the blocking body 10 in the narrow hoistway 1 can be eliminated.

As explained above, the present invention has an engagement device that engages with the car door, a holding device that operates while the car is being raised or lowered, and a holding device that operates while the car is being raised or lowered, and a holding device that is placed outside the normal stop area when the car is stopped outside the normal stop area. The car door is held in the engaged position by a blocking body, thereby locking the car door.

This prevents accidents caused by the car door being opened when the car is being raised or lowered or when the car stops abnormally.

[Brief explanation of the drawing]

FIG. 1 is a front view of essential parts showing one embodiment of the elevator system according to the present invention, FIG. 2 is an enlarged view of the section ▪ in FIG. 1, and FIG. 3 is a front view showing another embodiment of the elevator system according to the present invention. 1
It is a figure equivalent figure. 1... Hoistway, 2... Car, 4... Car door, 6
... Engagement device, 9... Holding device, 10... Blocker. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1 A car equipped with corner doors that ascends and descends in the hoistway, a locking device that is installed on this car and that moves to an engaged position and a non-locking position with respect to the corner doors, and a locking device that operates during the elevator movement of the corner doors. a holding device that holds the engaging device in the engaged position; and a blocking body that is provided in the hoistway and is disposed outside the normal stop zone of the corner to prevent displacement of the engaging device, An elevator system wherein the holding device prevents the engaging device from moving to a non-engaging position when the corner is being raised or lowered, and the blocking body prevents the engaging device from moving to a non-engaging position when the corner is stopped outside the normal stop zone.