JP2006016183A - Retiring cam device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive retiring cam device for an elevator being light in weight. <P>SOLUTION: This retiring cam device for the elevator has a cam provided in a car elevating and lowering in an elevator shaft and unlocking a door at a landing place by engaging with an unlocking roller on a landing place side, an attraction iron piece interlocking with the cam and energized on one side by an elastic body, and a permanent magnet supported by a bearing in the inside. This device is provided with a magnetic force generator for attracting the attraction iron piece against energizing force of the elastic body depending on direction of magnetic pole of the permanent magnet and a switching device for switching direction of the magnetic pole of the permanent magnet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevator retire ring cam device that unlocks a landing door installed at a landing when the elevator car stops at the landing.

  While the elevator car is stopped at other floors, or while the car is moving in the hoistway, the landing doors at the landings on each floor of the building are locked. Safety measures are taken at the landing so that passengers waiting for the arrival of the car at the landing will not fall into the hoistway from the landing. Therefore, if you stop at a landing where there is a car for passengers to get on and off, it is necessary to unlock the landing door before opening the door, and the car is equipped with an unlocking device for the landing door. is there. In an elevator retire ring cam device conventionally used as an unlocking device for such a landing door, the movable iron core is moved up and down depending on the presence or absence of excitation of an electromagnet provided on the upper portion. There is one that engages a shoe with a door unlocking mechanism of a landing door provided on the landing side by transmitting the vertical movement to the shoe through an operating rod, a hinge and an arm (for example, see Patent Document 1).

Japanese Utility Model Publication No. 51-105777

  In recent elevator devices, instead of the elevator retire ring cam device described in Patent Document 1, an engagement device for interlocking the landing door and the car door and an opening / closing device for opening and closing these doors are used to unlock the landing door. Systems with devices have become common. However, there are many elevator devices that are currently in operation that are equipped with the elevator retire ring cam device described in Patent Document 1 as an unlocking device for a landing door. Replacement of the retire ring cam device due to failure or deterioration In fact, demand is still high. In order to replace the elevator retire ring cam device described in Patent Document 1 with the above-described new unlocking device, all of the unlocking device provided in the car and the door unlocking device installed at the landing on each floor are used. It is necessary to replace, and it takes a lot of labor and cost, and there is a problem that the elevator apparatus must be stopped for a long time, which is not realistic. Therefore, even if the retire ring cam device still breaks down, the retire ring cam device that has been used in the past will be installed, but the conventional retire ring cam device has a large and heavy electromagnet on the top. Since it was provided, there was a problem that the balance was poor and workability was poor during manufacture and installation.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a lightweight and inexpensive retire ring cam device for an elevator.

  An elevator retire ring cam device according to the present invention is provided in an elevator car, and engages with a landing-side unlocking roller to unlock a landing door, and is interlocked with the cam and elastically operated. A magnetic force generator having an attracting iron piece biased to one side and a permanent magnet supported by a bearing inside, and attracting the attracting iron piece against the biasing force of the elastic body by the direction of the magnetic pole of the permanent magnet; And a switching device that switches the direction of the magnetic pole of the permanent magnet.

  The present invention is provided in an elevator car, which unlocks a landing door by engaging with an unlocking roller on the landing side, and an adsorption interlocked with the cam and biased to one side by an elastic body. An iron piece and a permanent magnet supported by a bearing inside, and a magnetic force generator for attracting the adsorbed iron piece against the biasing force of the elastic body according to the direction of the magnetic pole of the permanent magnet, and the direction of the magnetic pole of the permanent magnet are switched. With the configuration including the switching device, it is possible to provide a lightweight and inexpensive elevator retire ring cam device.

Embodiment 1 FIG.
1 is a perspective view of an elevator retire ring cam apparatus according to Embodiment 1 of the present invention. In the figure, the elevator hall provided on each floor of the building has a landing door (not shown) between the hall and the hoistway to prevent passengers at the hall from falling into the hoistway. The elevator door 1 is locked while the elevator car 1 is stopped at another floor, or while the car 1 is moving in the hoistway. Yes. A landing door opening and closing device (not shown) for opening and closing the landing door and a lock mechanism (not shown) for locking the landing door are provided on the hoistway wall where the landing doorway is formed. It is provided in the door opening / closing device girder 2 of the hall arranged over the upper door. Further, the unlocking shaft 3a extending from the lock mechanism to one side of the door opening / closing device girder 2 of the landing is provided with an unlocking roller 3c at its end via a roller arm 3b in a direction perpendicular to the axial direction. It has been. The unlocking shaft 3a, the roller arm 3b, and the unlocking roller 3c are provided so as to be rotatable within a predetermined angle around the unlocking shaft 3a, and depending on the position of the unlocking roller 3c, Unlocking is performed.

  Further, the car 1 that moves up and down in the hoistway is provided with a car door (not shown) so as to face the door of the landing when stopped at the landing, and includes a motor 4 and the like for opening and closing the car door. A car door opening / closing device is installed in a car door opening / closing device beam 5 provided above the car door. The car door opening / closing device girder 5 is disposed so as to face the door opening / closing device girder 2 at the landing when the car 1 stops at the landing.

Next, a retire ring cam device that is provided on one side of the car door opening / closing device girder 5 and that unlocks the landing door installed at the landing when the car 1 stops at the landing will be described in detail.
A link receiver 6 having a substantially rectangular parallelepiped shape is erected on one end face of the car door opening / closing device girder 5. A link 7 a is provided at the upper end of the link receiver 6, and a link 7 b is provided at the lower end. It is rotatably supported. Here, the link 7a is supported by the link receiver 6 at its center so that the rotation axis is parallel to the longitudinal direction of the car door opening and closing device girder 5, and one end is on the opposite landing side, The other end projects to the landing side. On the other hand, one end of the link 7b is supported by the link receiver 6 so that the rotation axis is parallel to the rotation axis of the link 7a, and the other end projects to the landing side. The links 7 a and 7 b arranged substantially parallel to each other are rotatable at their respective other ends protruding toward the landing side to a cam 8 having a substantially rectangular parallelepiped shape arranged substantially parallel to the link receiver 6. The distance between the cam 8 and the link receiver 6 is changed by rotating the links 7a and 7b. The cam 8 is arranged to face the unlocking roller 3c when the car 1 stops at the landing.

  A magnetic force generator 10 is provided above the link receiver 6 via a support plate 9 fixed to the upper end of the link receiver 6. This magnetic force generation device 10 is arranged immediately above one end of the link 7a, and is configured to generate a magnetic force on its lower surface by aligning a knob 10a provided on one side surface thereof with a predetermined position. Yes. A spring retainer 11 having a predetermined distance from the lower surface of the magnetic force generator 10 is provided below the magnetic force generator 10, and the spring retainer 12 a disposed further below the spring retainer 11 and the spring retainer 11. An elastic body made up of a coil spring 13 or the like is interposed between them. In other words, the spring retainer 12 a is always urged downward by the coil spring 13. The spring retainer 12a is provided with a rod 12b extending downward from the spring retainer 12a, and the other end of the link 7a is rotatably fixed to the lower end of the rod 12b. Further, between the lower surface of the magnetic force generator 10 and the spring retainer 11, an adsorbing iron piece 12c that moves up and down in conjunction with the spring retainer 12a disposed below the coil spring 13 is provided.

  On the side opposite to the landing of the magnetic force generation device 10, the knob 10a of the magnetic force generation device 10 is switched via an attachment base 14a fixed to the magnetic force generation apparatus 10 and an attachment plate 14b fixed to the attachment base 14a. A switching device 15 is provided. The switching device 15 includes a motor 15a fixed to one side of the magnetic force generation device 10 via a mounting base 14a and a mounting plate 14b, and a nut (not shown) provided in the motor 15a. The reducer 15b with a rotating nut that rotates in conjunction with the movement, and the nut provided inside the reducer 15b with the rotating nut are engaged, and the tip is pin-connected to the knob 10a of the magnetic force generator 10. The screw rod 15c is formed.

Next, the operation of the elevator retire ring cam device configured as described above will be described.
FIG. 2 is a view for explaining the operation of the elevator retire ring cam apparatus according to Embodiment 1 of the present invention, and FIG. 3 is a detailed view of the magnetic force generator 10 in FIG. The state when the vehicle is traveling, that is, when the landing door is locked is shown. In the figure, the magnetic force generation device 10 has a substantially cylindrical shape, and is provided in a case 10c and a permanent magnet 10b arranged so that a central axis is substantially horizontal, and is in contact with an outer peripheral surface of the permanent magnet 10b. Is provided with a sliding bearing 10d for rotatably supporting the permanent magnet 10b and the knob 10a described above provided on one of the opposing side faces of the permanent magnet 10b. By changing, the permanent magnet 10b inside the magnetic force generator 10 rotates and the direction of the magnetic pole of the permanent magnet 10b changes. Further, the knob 10 a of the magnetic force generator 10 is rotatably connected to the tip of the screw rod 15 c of the switching device 15. Here, as shown in FIG. 2, when the screw rod 15c is moved to the opposite landing side by the motor 15a of the switching device 15 and the speed reducer 15b with the rotating nut, the knob 10a connected to the tip of the screw rod 15c is Inclined to the counter landing side in conjunction with the screw rod 15c. That is, the permanent magnet 10b of the magnetic force generation device 10 is guided by the sliding bearing 10d as the knob 10a rotates and rotates in the same direction as the knob 10a. Here, when the knob 10a is inclined about 45 degrees toward the opposite landing side, as shown in FIG. 3, the S pole of the permanent magnet 10b is arranged in the lower part and the N pole is arranged in the upper part. In addition, an attractive force is generated by the permanent magnet 10b.

  When an attractive force is generated by the permanent magnet 10b on the lower surface of the magnetic force generation device 10 due to the direction of the magnetic pole of the permanent magnet 10b provided inside the magnetic force generation device 10, the magnetic force generation device 10 is disposed between the lower surface of the magnetic force generation device 10 and the spring retainer 11. The attracted iron piece 12c is attracted by this attractive force and moves upward until it comes into contact with the lower surface of the magnetic force generator 10 against the biasing force of the coil spring 13. The rod 12b connected to one end of the link 7a moves upward together with the adsorbing iron piece 12c in conjunction with the adsorbing iron piece 12c, and lifts one end of the link 7a upward. Then, the cam 8 connected to the other end of the link 7a moves to the car 1 side when the other end of the link 7a moves downward, and the unlocking roller 3c and the cam provided at the landing on each floor. A predetermined gap is formed between the two. That is, in this state, when the car 1 passes through the landing, the cam 8 and the unlocking roller 3c do not come into contact with each other.

  4 is a diagram for explaining the operation of the elevator retire ring cam apparatus according to the first embodiment of the present invention, and FIG. 5 is a detailed view of the magnetic force generator 10 in FIG. It shows a state when the landing stops and the landing door is opened, that is, when the landing door is unlocked. In the figure, the screw rod 15c is moved to the landing side by the motor 15a of the switching device 15 and the speed reducer 15b with a rotating nut, and the knob 10a of the magnetic force generator 10 connected to the tip of the screw rod 15c is shown in FIG. When rotating about 90 degrees counterclockwise from the state of FIG. 3, the permanent magnet 10b is guided by the sliding bearing 10d and rotated about 90 degrees in the same direction as the knob 10a. Here, when the knob 10a is tilted about 45 degrees toward the landing, as shown in FIG. 5, the N pole and S pole of the permanent magnet 10b are arranged so as to be substantially horizontal and are generated on the lower surface of the magnetic force generator 10. The suction power that was being used disappears.

  When the knob 10a of the magnetic force generation device 10 is tilted about 45 degrees toward the landing side, the attraction force attracting the attracting iron piece 12c generated on the lower surface of the magnetic force generation device 10 disappears. It moves downward by the urging force, and in conjunction with this, one end of the link 7a also moves downward. Then, the links 7a and 7b change from a state where the one end side is inclined to a substantially horizontal state, and the cam 8 connected to the other end portion of the link 7a is closer to the landing side than in the case of FIGS. Moving. When the car 1 stops at the landing in this state, the cam 8 engages with an unlocking roller 3c provided on the landing side, and the unlocking roller 3c is pushed toward the landing. In this way, the landing door is unlocked.

  According to the first embodiment of the present invention, the magnetic iron generator 12 and the switching device 15 can drive the attracting iron piece 12c interlocked with the cam 8 against the urging force of the elastic body. Compared to the case of using a large electromagnet that has been used from the beginning, the entire retire ring cam device can be reduced in weight, and the operability is greatly improved during manufacture and installation. Further, since the outer peripheral surface of the permanent magnet 10b provided in the magnetic force generator 10 is supported by the sliding bearing 10d, it is necessary to switch the knob 10a, that is, to switch the direction of the magnetic pole of the permanent magnet 10b. The power can be reduced. For this reason, the motor 15a used for the switching device 15 can be reduced in size, and the power consumption of the motor 15a and the noise during operation can be reduced. In addition, even if a retire ring cam device used in an existing elevator device breaks down, it is not necessary to replace the lock mechanism on the landing side, and the time and cost required for the replacement work can be reduced. is there. The magnetic force generator 10 can also be applied with a magnet stand or the like that is fixed to a surface plate or the like.

Embodiment 2. FIG.
FIG. 6 is a front view of an essential part of an elevator retire ring cam device according to Embodiment 2 of the present invention. In the figure, a switching device 16 for switching the knob 10a of the magnetic force generation device 10 is provided on the opposite side of the magnetic force generation device 10 via a mounting base 14c fixed to the magnetic force generation device 10. The switching device 16 is provided on the landing side from the electromagnet 16a of the mounting base 14c so as to have a predetermined distance from the electromagnet 16a and a small electromagnet 16a provided on the demagnetizing force generator 10 side of the mounting base 14c. A spring presser 16b and an end of the spring presser 16b are connected to the knob 10a of the magnetic force generator 10 so as to be rotatable, and an attracting iron piece 16c disposed between the electromagnet 16a and the spring presser 16b is provided. It consists of a rod 16d provided at the other end. Further, the rod 16d is provided with a spring retainer 16e on one end side thereof, and a second spring 16f comprising a coil retainer 16f provided between the spring retainer 16e and a spring retainer 16b fixed to the mounting base 14c. The elastic body is always urged toward the knob 10a.

Next, the operation of the elevator retire ring cam device configured as described above will be described.
FIG. 7 is a detailed view of a main part for explaining the operation of the elevator retire ring cam device according to the second embodiment of the present invention. FIG. 7 is a view corresponding to FIG. 6 is a diagram corresponding to FIG. 2 in the second embodiment. In the figure, when the car 1 is traveling in the hoistway, that is, when the landing door is locked, as shown in FIG. 6, the small electromagnet 16a is energized, and the electromagnet 16a and the spring retainer 16b are energized. Is attracted to the electromagnet 16a side against the biasing force of the coil spring 16f. When the attracting iron piece 16c moves to the electromagnet 16a side, the rod 16d connected to the knob 10a also moves to the electromagnet 16a side, and the knob 10a is inclined to the counter landing side.

  On the other hand, when the car 1 stops at a certain landing and the landing door is opened, that is, when the landing door is unlocked, the small electromagnet 16a is energized as shown in FIG. The magnetic force attracting the attracted iron piece 16c disappears after being stopped. Then, the spring retainer 16e receives a force on the landing side due to the urging force of the coil spring 16f, the rod 16d connected to the knob 10a moves to the landing side, and the knob 10a tilts toward the landing side.

  According to the second embodiment of the present invention, when the small electromagnet 16a is not energized, the knob 10a is inclined to the landing side by the urging force of the coil spring 16f. That is, when the electromagnet 16a is not energized, the cam 8 is engaged with the unlocking roller 3c on the landing side, that is, the landing door is unlocked, so that power cannot be supplied to the electromagnet 16a due to a power failure or the like. In this case, it is possible to prevent an accident such that the landing door is locked and the rescue of the passenger in the car 1 is delayed. The rest of the configuration and effects are the same as those of the first embodiment.

It is a perspective view of the retire ring cam apparatus for elevators in Embodiment 1 of this invention. It is a figure for demonstrating operation | movement of the retire ring cam apparatus for elevators in Embodiment 1 of this invention. FIG. 3 is a detailed view of the magnetic force generator in FIG. 2. It is a figure for demonstrating operation | movement of the retire ring cam apparatus for elevators in Embodiment 1 of this invention. It is detail drawing of the magnetic force generator in FIG. It is a principal part front view of the retire ring cam apparatus for elevators in Embodiment 2 of this invention. It is principal part detail drawing for demonstrating operation | movement of the retire ring cam apparatus for elevators in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Door opening / closing device girder of landing 3a Unlocking shaft 3b Rolling arm 3c Unlocking roller 4 Motor 5 Car door opening / closing device girder 6 Link receiving 7a, 7b Link 8 Cam 9 Support plate 10 Magnetic force generating device 10a Knob 10b DESCRIPTION OF SYMBOLS 10c Housing | casing part 10d Sliding bearing 11 Spring retainer 12a Spring retainer 12b Rod 12c Adsorption iron piece 13 Coil spring 14a, 14c Mounting base 14b Mounting plate 15, 16 Switching device 15a Motor 15b Reduction gear with rotation nut 15c Screw rod 16a Electromagnet 16b, 16e Spring retainer 16c Adsorption iron piece 16d Rod 16f Coil spring

Claims (4)

  A cam that is provided in the elevator car and unlocks the landing door by engaging with the unlocking roller on the landing side, an adsorption iron piece that is linked to this cam and is urged to one side by an elastic body, And a magnetic force generator for attracting the attracting iron piece against the biasing force of the elastic body according to the direction of the magnetic pole of the permanent magnet, and switching for switching the direction of the magnetic pole of the permanent magnet A retire ring cam device for an elevator comprising the device.   The magnetic force generator includes a cylindrical permanent magnet, a sliding bearing that rotatably supports the permanent magnet by contacting the outer peripheral surface of the permanent magnet, and a knob provided on one side of the permanent magnet. An elevator retire ring cam device according to claim 1.   The switching device is engaged with the motor provided on one side of the magnetic force generator, a reduction gear with a rotating nut having a nut interlocking with the main shaft of the motor, and the nut of the rotating nut reduction device. The elevator retire ring cam device according to claim 2, wherein the portion includes a screw rod rotatably provided on a knob of the magnetic force generator.   The switching device has one end rotatably provided to the knob of the magnetic force generator, a rod urged toward the knob by a second elastic body, and an adsorbing iron piece provided at the other end of the rod The elevator retire ring cam device according to claim 2, further comprising a small electromagnet that attracts the attracting iron piece against an urging force of the second elastic body.

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