JP5102676B2 - Elevator safety device - Google Patents

Description

  The present invention relates to an elevator safety device designed to ensure safety when a person or an object hits, gets caught, or is caught in an elevator door.

  Conventionally, Patent Document 1 is known as an elevator safety device. The elevator safety device disclosed in Patent Document 1 guides an intermediate slider to a guide rail so as to be movable, guides a door to the intermediate slider so as to be movable, and connects the intermediate slider and the door to be relatively movable, An urging means for urging the door in the closing direction with respect to the intermediate slider is provided, and a detecting means for detecting that the door has moved relative to the intermediate slider is provided against the urging means. Based on this, the door is moved in the opening direction. As a result, when a person or an object hits, is pinched, or caught in the door, this is detected and the door is opened to ensure safety.

However, in the above conventional example, the intermediate slider is guided to the guide rail so as to be movable, the door is guided to the middle slider so as to be movable, and the intermediate slider and the door are connected so as to be relatively movable. There is a problem that the intermediate slider and biasing means are required and the number of members increases and the mechanism becomes complicated, and further, this intermediate slider, biasing means, and detection means must be provided between the guide rail and the door, As described above, since a space for arranging the intermediate slider, the urging means, and the detecting means is required between the guide rail and the door, there is a problem that the vertical length of the door device becomes long.
JP 2000-289957 A

  The present invention has been invented in view of the above-described conventional problems, and has a small number of members, and with a simple structure, when a person or an object hits the door, is pinched, or is caught, the door is stopped or It is an object of the present invention to provide an elevator safety device that can be moved in the reverse direction to achieve safety.

The safety device for an elevator according to the present invention has an endless cable 4 spanned between a drive pulley 2 and a driven pulley 3 that are rotated by a motor 1, and a door 5 that is slidably supported is coupled to the endless cable 4. Thus, the door 5 is configured to open and close. And this invention is comprised so that the drive pulley 2 may be displaced by the pulling force of the endless rope 4 when the sliding movement of the door 5 is interrupted by a predetermined force or more, and detection for detecting the displacement of the drive pulley 2 provided with a means 6, formed Ru as inverted or stop the drive pulley 2 by the detection means 6 based on the detection of the displacement of the drive pulley 2. That is, a rotating portion 7 is provided to which the driving pulley 2 is rotatably attached, and the driving pulley is pulled by the pulling force of the endless rope 4 when the sliding movement when the door 5 is closed or opened is blocked by a predetermined force or more. 2 is rotated, the rotation of the rotation unit 7 is detected by the detection means 6, and the drive pulley 2 is detected based on the detection of the rotation of the rotation part 7 by the detection means 6. Is configured to be reversed or stopped.
That is, the driving pulley 2 is attached to the rotating portion 7 to which the driving pulley 2 is rotatably attached by the pulling force of the endless rope 4 when the sliding movement when the door 5 is closed is blocked by a predetermined force or more. The rotation unit 7 is rotated in one direction, and a first detection means 6a for detecting the rotation in one direction of the rotation unit 7 is provided. The drive pulley 2 is reversed or stopped based on the detection of the rotation of the rotating unit 7 in one direction by the first detecting means 6a. Rotation with the drive pulley 2 attached to the rotation part 7 to which the drive pulley 2 is rotatably attached by the pulling force of the endless cable 4 when the sliding movement when the door 5 opens is blocked by a predetermined force or more. The part 7 is rotated in the other direction, and second detection means 6b for detecting the rotation of the rotating part 7 in the other direction is provided. The drive pulley 2 is reversed or stopped based on the detection of the rotation of the rotating part 7 in the other direction by the second detecting means 6b. And the interlocking means 9 which links the door 5 of the landing floor on the floor where the elevator car has stopped with the door 5 of the elevator car 8 is provided, and a spring member which acts on the door 5 of the landing in the closing direction is provided. A shaft 12 is provided on a base frame 11 fixed on the elevator car 8 side, and a second rotating portion 13 and a rotating portion 7 are rotatably attached to the shaft 12. The rotating part 7 and the second rotating part 13 are detachably connected by the first connecting means 14, and the base frame 11 and the second rotating part 13 are detachable by the second connecting means 15. Link. A one-way rotation that prevents the second rotating part 13 from rotating in one direction in a normal state where the door 5 of the elevator car 8 and the door 5a of the landing are closed by sliding when the door 5a is closed. The movement preventing means 16 is provided. When the sliding movement when the door 5 of the elevator car 8 and the door 5a of the landing are closed with a predetermined force or more is interrupted, the pulling force of the endless rope 4 causes the rotating portion 7 and the second rotating portion 13 to move. The first connecting means 14 to be connected is removed, and the second rotating unit 13 is configured not to rotate, but only the rotating unit 7 to which the drive pulley 2 is attached rotates in one direction. When the first detection means 6a for detecting the rotation in only one direction of the rotation unit 7 is provided, and the sliding movement when the door 5a of the elevator car 8 and the door 5 of the landing are opened is blocked by a predetermined force or more. Due to the pulling force of the endless rope 4, the first connecting means 14 for connecting the rotating part 7 and the second rotating part 13 does not come off and connects the base frame 11 and the second rotating part 13 to each other. The second connecting means 15 is detached, and the rotating part 7 and the second rotating part 13 are integrally rotated in the other direction. The second detecting means 6b is provided with a second detecting means 6b for detecting rotation in the other direction of the rotating part 7 which rotates integrally with the second rotating part 13 .

  By adopting such a configuration, when a person or an object hits the door 5 during the movement of the door 5 or when the door 5 slides and is blocked by a predetermined force or more, the pulling force of the endless rope 4 is increased. Thus, the drive pulley 2 is directly displaced, and the displacement of the drive pulley 2 is detected by the detection means 6 so that the drive pulley 2 can be reversed or stopped to ensure safety.

In other words, with such a configuration, by detecting the rotation of the rotating unit 7 in one direction, when the door 5 is closed, it is detected that a person or an object has been hit or pinched, and the drive pulley 2 is It can be reversed or stopped for safety, and by detecting the rotation of the rotating part 7 in the other direction, it can be detected that a person or object has been hit or pinched when the door 5 is opened. The drive pulley 2 can be reversed or stopped for safety.

  Since the spring force acting in the closing direction by the spring member is acting on the landing door 5a, the door 5 and the landing door 5a are closed and opened when the person or object hits or is pinched Although the force acting on the drive pulley 2 differs depending on the rope 4, by configuring as described above, when the door 5 and the door 5 a of the landing are closed, a person or an object hits the object, or the rotating part 7 is caught. The drive pulley 2 can be reversed or stopped by rotating only the door, and safety can be ensured. When the door 5 and the landing door 5a are opened, a person or an object hits or gets caught, and the second rotation The rotation part 7 can be rotated together with the part 13 to reverse or stop the driving pulley 2 for safety.

  In the first aspect of the present invention, the driving pulley is reversed or stopped based on the detection of the displacement of the driving pulley by the detecting means as described above. It is possible to detect hitting, pinching, or winding-in, and it is possible to provide a safety device that does not require a member such as an intermediate slider as in the prior art, has a small number of members, and has a simplified configuration. Further, unlike the conventional case, it is not necessary to secure a space for arranging the intermediate slider, the biasing means, and the detecting means between the guide rail and the door, and the vertical length of the door device is restricted by the safety device. There is nothing.

In addition , when the sliding movement when the door is closed or opened is blocked by a predetermined force or more, the rotating part to which the drive pulley is attached is rotated by the pulling force of the endless rope, and the rotating part rotates. Since the movement is detected by the detection means and the drive pulley is reversed or stopped based on the detection of the rotation of the rotation portion by the detection means, the displacement of the drive pulley can be detected with a simple configuration. .

In addition , by detecting the rotation of the rotating part in one direction, it is safe to reverse or stop the drive pulley by detecting that a person or object has hit, pinched or caught when the door is closed. By detecting the rotation of the rotating part in the other direction, it is safe to reverse or stop the drive pulley by detecting that a person or object has hit or caught when the door is opened. It is possible to ensure safety when the door is closed and opened with a simple configuration.

In addition , when the door of the landing is subjected to a spring force acting in the closing direction by the spring member, safety can be ensured with a simple configuration in both cases of closing and opening the door and the door of the landing.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 to 16 show an embodiment of the present invention. An elevator car 8 disposed so as to be movable up and down in the elevator lift space of the building is provided with an entrance / exit opening, and the entrance / exit opening is opened and closed by a slidable door 5.

  The elevator car 8 is provided with an upper frame 17, an upper guide rail 18 is provided on the upper frame 17, and a traveling unit 19 provided at the upper end of the door 5 is attached to the upper guide rail 18 so as to be able to travel. .

  A base frame 11 and a driven pulley mounting frame 21 are provided at one end and the other end in the longitudinal direction of the upper frame 17. A motor 1 and a driving pulley 2 driven by the motor 1 are mounted on the base frame 11. The driven pulley 3 is attached to the driven pulley mounting frame 21.

An endless cable 4 such as a belt or a wire is stretched between a driving pulley 2 and a driven pulley 3 that are rotated by the motor 1, and a connecting fitting 22 fixed to the traveling portion 19 of the door 5 is attached to the endless cable 4. Yes and fixed, the forward rotation or the driving pulley 2 by driving the motor 1 by the reverse rotation to drive the endless rope 4 in one direction or reverse direction, one direction or reverse direction of the endless rope 4 The door 5 is slidably moved in the closing direction and the opening direction of the opening / exit opening portion of the elevator car 8 by driving the door 5.

When the door 5 of the elevator car 8 is slid and moved in the closing direction and the opening direction, the door 5a of the landing floor where the door 5 and the elevator car 8 are stopped are interlocked by the interlocking means 9 in the closing direction and the opening direction. Slide to move to.

  In the embodiment, as shown in FIGS. 1 and 2, the door 5 is provided with a car-side interlocking member 47, and when the car-side interlocking member 47 arrives at the landing floor where the elevator car 8 is located, the landing floor The door 5 provided on the elevator door 8 is slid in the opening direction or slid in the closing direction by driving the motor 1 as described above. The door 5a of the landing floor on the corresponding floor is simultaneously opened and closed in conjunction with the door 5 provided in the elevator car 8. Therefore, in this embodiment, the interlocking means 9 is constituted by the car side interlocking member 47 and the landing side interlocking member 48.

  Moreover, after closing the door 5 provided in the elevator car 8 and closing the door 5a of the landing on the corresponding floor, the elevator car 8 is lifted and moved to another floor. In this case, the elevator car 8 is lifted and lowered. Along with this, the car-side interlocking member 47 is separated from the landing-side interlocking member 48 and the fitting is released, and the landing door 5a remains closed.

  A spring force in the closing direction is applied to the landing door 5a by a spring member (not shown). Therefore, when the elevator car 8 leaves the floor as described above, the spring force of the spring member causes The landing door 5a is kept closed.

  In the present invention, when the sliding movement of the door 5 is blocked by a predetermined force or more, the driving pulley 2 is displaced by the pulling force of the endless rope 4.

  The drive pulley 2 is attached to the base frame 11 so as to be displaceable as shown in FIGS.

  That is, the base 12 fixed to the upper frame 17 is provided with a shaft 12 and a stopper protruding shaft 40 projecting upward. As shown in FIG. 5, the shaft 12 is fitted with a bearing portion 23 of the second rotating portion 13 and a bearing portion 24 of the rotating portion 7 so as to be freely rotatable.

  A second magnet 25 is provided on the base frame 11, and a detection means fixing piece 26 having an inverted L shape is provided on one side of the base frame 11, and a limit switch is provided on the detection means fixing piece 26. The first detection means 6a and the second detection means 6b are attached to the first detection means 6a and the second detection means 6b. The first detection means 6a and the second detection means 6b each have a first detection like an actuator. A part 34a and a second detection part 34b are provided.

Yes and the bearing portion 23 is provided on one side portion of the second plate-shaped main body 27 constituting the main body of the second pivot portion 13, it is second long hole 28 is provided on the other side. The second plate-shaped main body 27 is provided with a second magnetic body 29 made of a magnetic material such as iron facing downward, and the second magnetic body 29 of the second plate-shaped main body 27 is further provided. A first magnet 30 is provided above the portion.

  The second magnetic body 29 is freely magnetically attached to the second magnet 25 provided on the base frame 11. Therefore, the second magnetic body 29 and the second magnet 25 constitute a second connecting means 15 for detachably connecting the base frame 11 and the second rotating portion 13. Further, a stopper projecting shaft portion 40 projecting upward is inserted into the base frame 11 in the second long hole 28.

  As shown in FIG. 4, the base frame 11 and the second plate-shaped main body 27 are provided with spring support portions 41 and 42, respectively, and the second spring material 43 is interposed between the spring support portions 41 and 42. It is disguised.

The rotating part 7 is provided with a hat-shaped piece 32 having a substantially inverted hat shape on one side of the lower surface side of the plate-like main body part 31 constituting the main body, and the bearing part 24 is attached to the hat-shaped piece 32. is there. The other side portion of the plate-like main body portion 31 Yes to the detected portion 33 having a substantially arc shape is provided, one end side of the detected portion 33 next to the first detectable portion 33a, the other end portion side of the second In the state where the detected part 33 is positioned between the first detecting means 6a and the second detecting means 6b in the normal state, the first detected part 33a and the first detected part 33b are provided. The two detected parts 33b are located away from the first detecting part 34a and the second detecting part 34b, but when the rotating part 7 is rotated in one direction, the first detected part 33a. Is configured to push the first detecting unit 34a, and when the rotating unit 7 is rotated in the other direction, the second detected unit 33b pushes and operates the second detecting unit 34b. Yes.

A long hole 35 is provided in a portion of the plate-like main body portion 31 between the portion of the plate-like main body portion 31 corresponding to the upper portion of the attachment portion of the bearing portion 24 and the attachment portion of the detected portion 33. the main body portion 31 first magnetic body 36 made of a magnetic material such as iron downward is provided. The first magnetic body 36 is freely magnetically attached to the first magnet 30 provided in the second rotating portion 13. Accordingly, the first magnetic body 36 and the first magnet 30 constitute the first connecting means 14 that detachably connects the rotating portion 7 and the second rotating portion 13. Further, a stopper projecting shaft portion 40 projecting upward from the base frame 11 is fitted into the long hole 35.

  As shown in FIG. 4, the second plate-like main body 27 and the plate-like main body 31 are provided with spring support portions 44 and 45, respectively, and the first spring material 46 is provided on both spring support portions 44 and 45. It is intervening.

  A motor 1 and a drive pulley 2 are attached to the rotating unit 7. In the embodiment shown in the accompanying drawings, a support column 37 is erected upward from the plate-shaped main body 31, and the motor unit 39 including the motor 1 and the speed reduction unit 38 is fixed to the support column 37. 39 is provided with a drive pulley 2 that rotates via a speed reducing portion 38.

Here, in the present invention, the door 5 and the door 5a on the corresponding floor are slid in the opening direction in conjunction with each other by rotating the motor 1 forward or backward and rotating the drive pulley 2 forward or backward. or it is intended to or slid in the closing direction.

  As shown in FIG. 8A, when the door 5 and the door 5a on the corresponding floor are normally slid in the opening direction and slid in the closing direction, the second magnet 25 and the second magnetic body 29 are magnetized. The first magnet 30 and the first magnetic body 36 are magnetized while being worn. In this normal state, as shown in FIG. 6, the first detected part 33a and the second detected part 33b are located away from the first detecting part 34a and the second detecting part 34b. Further, as shown in FIG. 8C, the stopper projecting shaft portion 40 is in contact with the other end portion of the second elongated hole 28, and the second rotating portion 13 is in contact with the second magnet 25 against the base frame 11. In a state where the second magnetic body 29 is magnetically attached, the second magnetic body 29 is configured not to rotate in one direction (arrow A direction). Accordingly, the other end portion of the second long hole 28 and the stopper protruding shaft portion 40 are not normally blocked by a predetermined force or more during sliding movement when the door 5 of the elevator car 8 and the door 5a of the landing are opened. In the state, the one-way rotation preventing means 16 is configured to block the rotation of the second rotation unit 13 in one direction (the direction of arrow A). By providing the one-way rotation preventing means 16 in this way, the second magnetic body 29 does not further push the second magnet 25 in the state where the second magnetic body 29 is magnetically attached to the second magnet 25. In a state where the second magnet 25 and the second magnetic body 29 are magnetized, the second rotating portion 13 can be rotated in the other direction (arrow B direction).

  Further, in this case, as shown in FIG. 8B, the stopper protruding shaft portion 40 is located in the middle of the longitudinal direction of the elongated hole 35 with respect to the elongated hole 35, and the rotating portion 7 is in one direction ( It can be rotated in both directions (arrow B direction) and other direction (arrow B direction).

  When the motor 1 is rotated forward and the drive pulley 2 is rotated forward, the endless cable 4 is rotated and the door 5 is slid in the closing direction. When the door 5a is slid in the closing direction, a person or an object hits the door 5 or the door 5a, gets caught, or gets caught, and the sliding movement of the door 5 or the door 5a is blocked by a predetermined force or more. The pulling force in the direction opposite to the rotational direction acts on the drive pulley 2 from the endless cord 4. When a pulling force in a direction opposite to the rotation direction with respect to the driving pulley 2 is applied, the rotating unit 7 including the driving pulley 2 tries to rotate in one direction (the direction of arrow A).

In this case, FIG. 12 as though the stopper projecting shaft portion 40 at one end of the second elongated hole 28 hits the (c), one-way second pivot portion 13 relative to the base frame 11 (arrow B), the position of the first magnet 30 provided in the second rotating portion 13 does not change as shown in FIG. 12A (in this case, the second magnetic body 29 and the second magnet 25). Therefore, as described above, the sliding movement in the opening direction of the door 5 and the door 5a is blocked by a predetermined force or more and the rotating portion 7 having the driving pulley 2 is When a force to rotate in the direction (arrow A direction) is applied, the first magnetic body 36 is pulled away from the first magnet 30 as shown in FIG. 1), the first detected portion 33a pushes the first detecting portion 34a to operate the first detecting means 6a, and FIG. One end portion of the elongated hole 35 as shown in (b) is hitting the stopper projecting shaft portion 40, and stops without further rotation pivot portion 7 to the second pivot portion 13.

In this way, the closed door is slid in the direction 5, or hit a person or an object in the door 5a, caught or, if it is detected that Dari I wound write by the first detecting means 6a, on the basis of the detection Safety is ensured by reversing or stopping the motor 1 by the control unit.

As described above, when the second rotating unit 13 does not rotate with respect to the base frame 11 and the rotating unit 7 rotates in one direction (arrow B direction) with respect to the second rotating unit 13, Although the second spring material 43 does not change, the first spring material 46 is pulled, and a spring force is applied to the rotating portion 7 to return to the original position. For this reason, when the motor 1 is reversed or stopped, hits the door 5 or the door 5a, or a person or object caught is removed, the rotating portion 7 is moved in the other direction by the spring force of the first spring material 46. As shown in FIG. 8A, the first magnetic body 36 returns to the original normal position where it is attracted to the first magnet 30 and stops. In this case, the relationship between the second elongated hole 28 and stopper projecting shaft portion 40 returns to the positional relationship of FIG. 8 (c).

  On the other hand, when the motor 1 is reversely rotated and the drive pulley 2 is reversely rotated, the endless cable 4 is reversely rotated and the door 5 and the door 5a are slid in the opening direction. When an object hits, is pinched, or is caught, and the sliding movement of the door 5 or the door 5a is blocked by a predetermined force or more, the pulling force in the direction opposite to the rotational direction is applied to the drive pulley 2 in the endless strip 4. Acts from. When a pulling force in the direction opposite to the rotation direction with respect to the drive pulley 2 is applied, the rotation unit 7 including the drive pulley 2 tries to rotate in the other direction (arrow B direction).

  In this case, since the first magnetic body 36 pushes the first magnet 30 when the rotating unit 7 rotates in the other direction, the second rotating unit 13 becomes the rotating unit as shown in FIG. 7, and the second magnetic body 29 is pulled away from the second magnet 25. In this way, when the rotation unit 7 rotates in the other direction together with the second rotation unit 13, the second detected unit 33b pushes the second detection unit 34b and the second detection unit 34b as shown in FIG. 16b, and the other end portion of the long hole 35 abuts against the stopper projecting shaft portion 40 to prevent further rotation of the rotating portion 7 as shown in FIGS. In addition, the other end of the second elongated hole 28 abuts against the stopper projecting shaft portion 40 to prevent further rotation of the second rotating portion 13.

  When the first detection means 6a detects that a person or an object has hit the door 5 or the door 5a that has been slid in the opening direction in this way, or the object is caught, the controller 1 controls the motor 1 based on this detection. Safety is ensured by reversing or stopping.

  As described above, when the rotating part 7 is integrated with the second rotating part 13 and rotates in the other direction with respect to the base frame 11, the first spring material 46 does not change, but the second spring material The spring force 43 attempts to return to the original position on the second rotating portion 13 that is pulled and integrated with the rotating portion 7. For this reason, when the motor 1 is reversed or stopped, hits the door 5 or the door 5a, or a person or object caught is removed, the spring force of the second spring member 43 and the second rotating portion 13 together. The rotating unit 7 rotates in one direction and returns to the original normal position where the second magnetic body 29 is attracted to the second magnet 25 and stops.

  By the way, since the spring force acting in the closing direction by the spring member is acting on the landing door 5a, when the door 5 and the landing door 5a are closed and opened, people and objects hit or get caught, The force acting on the drive pulley 2 by the endless rope 4 when it is caught is different. However, in the present invention, when the sliding movement is blocked by a predetermined force or more when the door 5 or the door 5a is closed, the first magnetic body 36 and the first magnet 30 are separated from each other so that the rotating portion 7 is integrated. When the sliding movement is blocked by a predetermined force or more when the door 5 and the door 5a are opened, the second magnetic part 29 and the second magnet 25 are separated from each other to separate the second magnetic part 29. Since the rotating portion 7 is integrally rotated in the other direction, the magnetic force of the first magnet 30 and the magnetic force of the second magnet 25 are made different from each other, so that the door 5 and the landing door 5a. Even if a person or an object hits, gets caught, or is caught when the door is closed or opened, the drive pulley 2 can be reversed or stopped under the same conditions for safety.

Thus, in the present invention, or hit a person or an object in the door 5,5a sliding movement, caught and Ri, since it is detected that involved as a displacement of the drive pulley 2, intrinsic to the elevator device The drive pulley 2 can also be used as a member constituting the safety device, the number of members can be reduced, the configuration of the safety device can be simplified, and the space for arranging the intermediate slider, the urging means, and the detection means as in the prior art can be reduced. There is no need to secure between the guide rail and the door, and the vertical length of the door device is not restricted by the safety device.

  Next, another embodiment of the present invention will be described with reference to FIGS.

  An elevator car 8 disposed so as to be movable up and down in the elevator lift space of the building is provided with an entrance / exit opening, and the entrance / exit opening is opened and closed by a slidable door 5.

  As shown in FIGS. 17 and 18, the elevator car 8 has an upper frame 17, an upper guide rail 18 is provided on the upper frame 17, and the upper guide rail 18 is provided at the upper end of the door 5. A traveling unit 19 is attached to be able to travel.

  A base frame 11 and a driven pulley mounting frame 21 are provided at one end and the other end in the longitudinal direction of the upper frame 17. A motor 1 and a driving pulley 2 driven by the motor 1 are mounted on the base frame 11. The driven pulley 3 is attached to the driven pulley mounting frame 21.

An endless cable 4 such as a belt or a wire is stretched between a driving pulley 2 and a driven pulley 3 that are rotated by the motor 1, and a connecting fitting 22 fixed to the traveling portion 19 of the door 5 is attached to the endless cable 4. Yes and fixed, the forward rotation or the driving pulley 2 by driving the motor 1 by the reverse rotation to drive the endless rope 4 in one direction or reverse direction, one direction or reverse direction of the endless rope 4 The door 5 is slidably moved in the closing direction and the opening direction of the opening / exit opening portion of the elevator car 8 by driving the door 5.

When the door 5 of the elevator car 8 is slid in the closing direction and the opening direction, the door 5 and the door 5a of the landing floor where the elevator car 8 is stopped are interlocked by the interlocking means in the closing direction and the opening direction. The slide moves.

  In this embodiment, when the sliding movement of the door 5 is interrupted by a predetermined force or more, the driving pulley 2 is displaced by the pulling force of the endless rope 4.

  That is, as shown in FIG. 19, the rotating part 7 provided with the motor 1 and the drive pulley 2 around the shaft support part 50 is attached to the base frame 11 so as to freely rotate.

  The rotating part 7 is provided with a detected part 33.

  The base frame 11 and the rotating portion 7 are connected by a spring member 51, and the rotating portion 7 is normally held at the normal position shown in FIG. 20 by the spring force.

  Detection means 6 such as a limit switch is attached to the base frame 11, and a detection unit 34 such as an actuator provided in the detection means 6 is provided.

  Here, in the present invention, when a person or an object hits, is pinched, or is caught when the door 5 or the door 5a is slid, the motor 1 tries to rotate and a force acts in the direction opposite to the rotational direction so that the rotating unit 7 The force rotates against the spring force of the spring member 51 in the direction of the arrow C in FIG. 21, and the detected portion 33 pushes the detecting portion 34 to operate the detecting means 6 to detect the displacement of the drive pulley 2.

The detection of the displacement of the drive pulley 2 by the detection means 6 is inputted to the control unit, the control unit controls to reverse or stop the drive pulley 2 (not shown), so as to ensure safety.

Also in this embodiment, or hit a person or an object in the door 5,5a sliding movement, Ri and Tsu sandwiched, since it is detected that involved as a displacement of the drive pulley 2, the drive pulley inherent in the elevator device 2 can also be used as a member constituting the safety device, the number of members can be reduced, the structure of the safety device can be simplified, and the space for arranging the intermediate slider, biasing means, and detection means as in the conventional case is a guide rail. There is no need to secure between the door and the door, and the vertical length of the door device is not restricted by the safety device.

It is a front view of the present invention. It is a top view same as the above. It is a perspective view of the attachment part of a drive pulley same as the above. Oh Ru in perspective view from another direction of the mounting portion of the drive pulley of the same. Rotating portion of the same, a cross-sectional view of the rotatably supporting portion of the second rotating portion. It is a top view which shows the normal state in which a person or an object hits, is pinched, or is not caught when opening and closing a door same as the above. It shows a normal state in which no person or object hits, is pinched, or caught up when the door is opened or closed, (a) is a front view, (b) is a left side view, and (c) is a right side. FIG. (A) is explanatory drawing which shows the positional relationship of the 1st magnetic body and 1st magnet in a normal state same as the above, and the positional relationship of a 2nd magnetic body and a 2nd magnet, (b) is a 1st long hole, It is explanatory drawing which shows the positional relationship with the protrusion shaft part for stoppers, (c) is explanatory drawing which shows the positional relationship between a 2nd long hole and the protrusion part for stoppers. It is a top view which shows the state which the rotation part rotationally displaced by a person and an object hitting | hitting, pinching, or getting involved when opening a door same as the above. Or hitting people or objects when opening ibid door, caught or rotating portion to or pull is a plan view showing a rotating portion component of the state where the rotational displacement. The opening part of a state where the person or object hits, is pinched, or is caught when the door is opened, and the rotating part is rotationally displaced is shown, (a) is a front view, and (b) is the left side. It is a side view, (c) is a right side view. (A) shows the positional relationship between the first magnetic body and the first magnet and the second magnetism in a state in which the rotating part is rotationally displaced when a person or an object hits, is pinched, or is caught when the door is opened. It is explanatory drawing which shows the positional relationship of a body and a 2nd magnet, (b) is explanatory drawing which shows the positional relationship of a 1st long hole and the protrusion part for stoppers, (c) is a 2nd long hole, It is explanatory drawing which shows the positional relationship with the protrusion part for stoppers. It is a top view which shows the state which the rotation part rotationally displaced by a person and an object hitting, pinching, or getting involved when closing a door same as the above. Or hitting people or objects when closing supra doors, caught or rotating portion to or pull is a plan view showing a rotating portion component of the state where the rotational displacement. The closing part of the rotating part is shown in a state where the rotating part is rotationally displaced by a person or object hitting, pinching or getting caught when the door is closed, (a) is a front view, (b) is a left side. It is a side view, (c) is a right side view. (A) shows the positional relationship between the first magnetic body and the first magnet and the second magnetism in a state in which the rotating part is rotationally displaced by a person or object hitting, pinching or being caught when the door is closed. It is explanatory drawing which shows the positional relationship of a body and a 2nd magnet, (b) is explanatory drawing which shows the positional relationship of a 1st long hole and the protrusion part for stoppers, (c) is a 2nd long hole, It is explanatory drawing which shows the positional relationship with the protrusion part for stoppers. It is a front view which shows other embodiment of this invention. It is a top view same as the above. The attachment part of a drive pulley same as the above is shown, (a) is a top view, (b) is a front view. A normal state in which a person or an object hits, is pinched, or is not caught when the door is opened and closed is shown, (a) is a front view, and (b) is a plan view. FIG. 2 shows a state in which a rotating part is rotated and displaced by a person or an object hitting, pinching or getting caught when the door is opened and closed, (a) is a front view and (b) is a plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor 2 Drive pulley 3 Driven pulley 4 Endless cable 5 Door 5a Door 6 Detection means 6a First detection means 6b Second detection means 7 Rotating part 8 Elevator car 9 Interlocking means 11 Base frame 12 Shaft 13 Second Rotating part 14 First connecting means 15 Second connecting means 16 One-way turning preventing means

Claims (1)

An endless cable is stretched between a drive pulley and a driven pulley that are rotated by a motor, and a door that is slidably supported is coupled to the endless cable to open and close the door, and the drive pulley is rotated. A rotating part that is freely attached is provided, and when the sliding movement when the door is closed is blocked by a predetermined force or more, the rotating part to which the drive pulley is attached is pulled by the pulling force of the endless rope. A first detection means for rotating in one direction and detecting the rotation in one direction of the rotation portion is provided, and based on the detection of the rotation in one direction of the rotation portion by the first detection means. Attach the drive pulley by the pulling force of the endless rope when the sliding movement when the door is opened is blocked by more than a predetermined force on the rotating part where the drive pulley is reversed or stopped and rotated freely The rotating part rotates in the other direction, and the other of the rotating parts Providing the second detection means for detecting the rotation of, so as to reverse or stop the drive pulley based on the detection in the other direction of rotation of the rotating portion by the sensing means second,
Provide interlocking means to link the landing door on the floor where the elevator car has stopped with the door of the elevator car, provide a spring member that acts in the closing direction on the landing door, and place the shaft on the base frame fixed to the elevator car side A second rotating portion and a rotating portion are rotatably attached to the shaft, the rotating portion and the second rotating portion are detachably connected by a first connecting means, The frame and the second rotating part are detachably connected by the second connecting means, and in a normal state in which the door of the elevator car and the landing door are not blocked by a predetermined force or more during sliding movement when the door is closed. One-way rotation blocking means for blocking the rotation of the two rotation parts in one direction is provided, and the endless cable when the sliding movement when the elevator car door and the landing door close are blocked with a predetermined force or more Due to the pulling force of the strip, the rotating part and the second rotating part The first connecting means to be connected is removed, and the second rotating part is configured not to rotate, but only the rotating part to which the drive pulley is attached rotates in one direction. The first detecting means for detecting the rotation of the direction is provided, and when the sliding movement at the time when the elevator car door and the landing door are opened is blocked by a predetermined force or more, the rotating portion is caused by the pulling force of the endless cable. The first connecting means for connecting the second rotating portion and the second rotating portion is not disengaged, and the second connecting means for connecting the base frame and the second rotating portion is disengaged and the rotating portion and the second rotating portion are removed. And a second detecting means for detecting rotation in the other direction of the rotating portion that rotates integrally with the second rotating portion. An elevator safety device, characterized by comprising:

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