JP2013086933A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of smoothly braking a car, when the car travels while opening a car door.SOLUTION: A door-opening travel preventing means 4 includes: a lowering stopper 41a and a rising stopper 41b respectively arranged in upper and lower vicinity of a car stopping position of a guide rail for the car and having an inclination of becoming wide in a width downward and having an inclination of becoming wide in a width upward; and an engaging body 42 arranged on the car 1 side. The engaging body includes: a braking arm 422 rotatably connecting two arm parts being a pair with a shaft 421 as a fulcrum and having its one end side opposable to the stopper; a braking spring 423 arranged between the other ends of the braking arm; and a braking arm moving mechanism 424 for reciprocatably moving the braking arm between a braking position where the one end of the braking arm is opposed to the stopper and a standby position where the one end of the braking arm is not opposed to the stopper.

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus that prevents a car from traveling with a car door open.

  In general, the elevator apparatus is controlled so that the braking device is operated by the control device and the car does not move when the door is opened when the elevator device reaches the calling floor or the destination floor. However, it is assumed that the car that moves up and down the hoistway moves up or down while the door is open due to some factor, such as a decrease in the holding power of the braking device or an erroneous command. There is a risk that such a phenomenon will develop into a serious accident. If such a phenomenon occurs, it is assumed that the elevator will not be used for a long time because it takes time and effort to recover. It also leads to annoying situations.

  As a technique for preventing such a situation, conventionally, a protruding member that protrudes toward the guide rail when the car door is opened, and a protruding member that is provided on the lifting wall side and protrudes (For example, refer to Patent Documents 1 and 2), and the car does not interfere with the hoistway when the car is stopped at the floor level and the car door is closed. A shaft provided with a stopper that comes into contact with the car door when the door is open (see, for example, Patent Document 3), and a shaft having a plurality of insertion holes that are coaxially fixed to the torque transmission shaft and formed on the same circumference A rotation restricting panel, an insertion rod disposed so as to be movable only in the axial direction of the torque transmission shaft, and an insertion rod actuating mechanism for reciprocating the insertion rod between the shaft rotation restriction position and the shaft rotation restriction release position With the car door open There is one adapted to move in the axial rotation restriction position an insertion rod Te (e.g., see Patent Document 4).

Noto 3150564 (paragraph numbers 0016 to 0027, FIG. 2) JP 2010-120745 A (paragraph numbers 0023 to 0029, FIG. 2) JP 2010-143670 A (paragraph numbers 0018 to 0023, FIG. 2) JP 2009-18882 (paragraph numbers 0024 to 0042, FIG. 3)

  However, in the conventional device described above, when the car travels with the car door open for some reason, the protruding member collides with the limiting member, the car collides with the stopper, and the insertion rod collides with the insertion hole. . That is, in the conventional one, it is not considered to reduce the impact caused by the collision between the means for braking the car, and such a shock may cause passengers in the car to feel uncomfortable. .

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide an elevator apparatus that can smoothly brake a car when the car runs with the car door open. is there.

  In order to achieve the above object, the present invention provides a car and a counterweight that move up and down in a hoistway provided in a building, and a car that is erected in the hoistway and guides the raising and lowering of the car. Guide rails, a rope for connecting the car and the counterweight, a hoist that moves the car and the counterweight up and down by driving the rope, and the car when the car door is open In the elevator apparatus provided with a door-opening travel prevention means for preventing the car from traveling, the door-opening travel prevention means are respectively disposed in the vicinity of the car stop position above and below the car guide rail, and directed downward. A descent stopper having a wide inclination, a rising stopper having a wide inclination upward, and provided on the side of the car, the door is opened when the door is opened. With the wrapper facing position, when the car is moved up and down in a door open state is characterized by comprising a engaging body to be engaged with the stopper.

  In the present invention configured as described above, when the car is raised and lowered, the engaging body is outside the vertical projection area of the lowering stopper and the raising stopper because it is in the standby position, and does not hinder the raising and lowering of the car. On the other hand, when the car is landed and the car door is opened, the engaging body is in a braking position facing the stopper. When the car is lowered or raised while the car door is open for some reason, the engaging body slides on the inclined surface of the stopper and brakes the car by the frictional force. Thus, since the braking force gradually increases as the engaging body slides on the inclined surface of the stopper, the car can be braked smoothly.

  Further, according to the present invention, the engaging body includes a pair of two arm portions that are rotatably connected with a shaft as a fulcrum, and one end of the engaging body that can face the stopper and the other end of the braking arm. A brake spring installed on the brake arm, and a brake arm movement for reciprocating the brake arm between a brake position where one end faces the stopper and a standby position where one end of the brake arm is not opposed to the stopper And a mechanism.

  In the present invention configured as described above, when the car is raised and lowered, the brake arm is in the standby position, so that the brake arm is outside the vertical projection area of the descent stopper and the ascending stopper and hinders the raising and lowering of the car. There is no. On the other hand, when the car is landed and the car door is opened, one end of the braking arm becomes a braking position facing the stopper. When the car is lowered or raised with the car door open for some reason, one end of the braking arm comes into contact with the stopper, and the braking arm then reacts against the inclined surface of the stopper with the reaction force of the braking spring. The car is slid while braking and the car is braked by the frictional force. In this way, by sliding while applying the reaction force of the braking spring to the inclined surface of the stopper via the braking arm, the braking force gradually increases, thereby making it possible to brake the car more smoothly. it can.

  ADVANTAGE OF THE INVENTION According to this invention, when a car drive | workes with a car door opened, a car can be braked smoothly and a highly safe elevator apparatus can be implement | achieved.

It is a schematic block diagram of the elevator apparatus which concerns on this invention. It is a side view of the door opening travel prevention means which shows one Example of this invention. The stopper in a present Example is shown and it is an AA arrow line view of FIG. FIG. 3 is a sectional view taken along the line B-B in FIG. It is sectional drawing of the door opening travel prevention means which shows the state which has a braking arm in the position which opposes a stopper. It is sectional drawing of the door opening travel prevention means which shows the state which has a braking arm in the wide position of a stopper.

  Embodiments of an elevator apparatus according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the elevator apparatus includes a car 1 that moves up and down in a hoistway provided in a building, and a car guide rail 2 that stands in the hoistway and guides the raising and lowering of the car 1. And a rope 3 connected to the car 1 and a door-opening travel prevention means 4 disposed at the top of the car 1 and preventing the car 1 from running when the car door (not shown) is open. ing.

  As shown in FIGS. 2 and 3, the door-opening travel prevention means 4 is disposed respectively near the top and bottom of the car stop position of the car guide rail 2, and has a descent stopper 41 a having a slope that becomes wider downward. And a rising stopper 41b having a slope that becomes wider upward. The descending stopper 41a and the ascending stopper 41b are fixed to the root portion of the car guide rail 2 by bolts 5.

  Further, as shown in FIG. 2, the door-opening travel prevention means 4 is provided on the car 1 side, and when the car 1 moves up and down in the door-open state while being in a position facing the stoppers 41a and 41b when the door is opened. And an engaging body 42 that engages with the stoppers 41a and 41b. Specifically, as shown in FIGS. 2, 4 to 6, the engaging body 42 is configured such that two arm portions to be paired are rotatably connected with a shaft 421 as a fulcrum, and one end side thereof is connected to stoppers 41 a and 41 b. A braking arm 422 that can be opposed, a braking spring 423 installed between the other ends of the braking arm 422, a braking arm 422, a braking position with one end facing the stoppers 41 a and 41 b, and one end of the braking arm 422 Includes a braking arm moving mechanism 424 that reciprocates between the stoppers 41a and 41b and a non-opposing standby position.

  The brake arm moving mechanism 424 supports the brake arm 422 and can move in a lateral direction, and can be slid in the lateral direction, a main body 424b that covers the movable core 424a, and a spring that is interposed between the movable core 424a and the main body 424b. 424c, and a coil 424d that is supplied with electric power in response to the door closing signal and is cut off in accordance with the door opening signal.

  In the present embodiment, when the car 1 is raised and lowered, a door closing signal is output and electric power is supplied to the coil 424d. In response, the movable core 424a is attracted to the coil 424d by overcoming the elastic force of the spring 424c, and the braking arm 422 is in the standby position as shown in FIG. At this time, the braking arm 422 is outside the vertical projection area of the stoppers 41a and 41b, and does not hinder the raising and lowering of the car 1. On the other hand, when the car 1 is landed and a door open signal is output and the car door is opened, the power supplied to the coil 424d is cut off as shown in FIG. 5, and the elastic force of the spring 424c is accordingly responded. As a result, the movable iron core 424a moves away from the coil 424d, and one end of the braking arm 422 becomes a braking position facing the stoppers 41a and 41b.

  At this time, when the car 1 is lowered, for example, while the car door is open for some reason, one end of the braking arm 422 comes into contact with the lowering stopper 41a. When the car 1 further descends from this state, as shown in FIG. 6, the braking arm 422 slides while applying the reaction force of the braking spring 423 to the inclined surface while rotating by the inclination of the lowering stopper 41a. . Thus, the car 1 is braked by the frictional force generated by the sliding contact between the braking arm 422 and the lowering stopper 41a.

  Here, braking of the car 1 is performed by one end of the braking arm 422 sliding in the direction of widening the inclined surface of the lowering stopper 41 a and lowering the reaction force of the braking spring 423 via the braking arm 422. By sliding while applying to the inclined surface of the stopper 41a, the braking force gradually increases and smooth braking is achieved. Further, when the abnormal lowering of the car 1 is restored and the standby position is reached, the braking arm 422 is restored to the original position by the elastic force of the braking spring 423.

  Here, the case where the car 1 is lowered while the car door is opened for some reason has been described as an example. However, when the car 1 is raised, the braking arm 422 slides on the raising stopper 41b, Slowly brake the car 1.

  According to the present embodiment, when the car 1 travels with the car door open for some reason, the car 1 can be smoothly braked, so that an elevator device with high safety can be realized.

DESCRIPTION OF SYMBOLS 1 Car cage 2 Car guide rail 3 Rope 4 Door-opening travel prevention means 41a Lowering stopper 41b Lifting stopper 42 Engaging body 421 Shaft 422 Braking arm 423 Braking spring 424 Braking arm moving mechanism 424a Movable core 424b Main body 424c Coil 424d Coil 5 volts

Claims (2)

A car and a counterweight that move up and down in a hoistway provided in a building, a car guide rail that is erected in the hoistway and guides the lift of the car, and the car and a counterweight A rope to be connected, a hoist that moves the car and the counterweight up and down by driving the rope, and door-opening travel prevention that prevents the car from running when the car door is open In an elevator apparatus comprising means,
The door-opening travel prevention means is disposed in the vicinity of the car stop position at the top and bottom of the car guide rail, and has a descent stopper that has a slope that widens downward, and a slope that widens upward. A raising stopper, and an engaging body that is provided on the side of the car and that is opposed to the stopper when the door is opened, and that engages with the stopper when the car is raised and lowered when the door is opened. Elevator device characterized by.   The engaging body is connected to a pair of two arm portions that can rotate about a shaft as a fulcrum, one end of which is opposed to the stopper, and a braking arm installed between the other ends of the braking arm. A spring and a braking arm moving mechanism for reciprocating the braking arm between a braking position with one end facing the stopper and a standby position with one end of the braking arm not facing the stopper; The elevator apparatus according to claim 1.