JP6598900B2 - Elevator system - Google Patents

Description

  Embodiments of the present invention relate to an elevator system that detects a foreign object being caught when a car door provided in an elevator car is closed.

  Conventionally, safety devices have been developed that detect foreign object pinching caused by a car door provided in an elevator car. The safety device has, for example, a tape switch provided on a door panel of a car door. The door panel has a door contact surface or a front end surface that abuts against another door panel when the door is closed, and a tape switch is disposed on the front end surface to detect the inclusion of a foreign object.

JP-A-5-246667

  By the way, in the safety device as described above, the detection of foreign object pinching is performed when the car landing on the landing is closed. Therefore, if no foreign object is detected when the door is closed, the car moves up and down while the foreign object is caught in the car door. If the car goes up and down with the foreign object sandwiched in the car door, the foreign object may be pulled between the landing and the car, leading to an accident. For example, when the foreign object is a lead connecting the pet and the owner, the pet or the owner may be seriously injured.

  The present invention has been made in consideration of such points, and an object of the present invention is to provide an elevator system that can detect foreign object pinching when the door is closed while the car is moving up and down.

  An elevator system according to an embodiment is an elevator system that detects the trapping of a foreign object when a car door provided in an elevator car is closed, and is provided at an upper portion of the car door so that the foreign object is inserted. An upper pressure detector for detecting a pressing force applied from the foreign object when the car is lowered in a state where the car is lowered, and the car is raised in a state where the foreign object is sandwiched. A lower pressing force detector for detecting a pressing force applied from the foreign matter in case, a driving device for raising and lowering the car, and a control device for controlling the driving device. The control device stops the car when the upper pressing force detector or the lower pressing force detector detects the pressing force, and then immediately before the pressing force is detected by the pressing force detector. The driving device is controlled so that the car lands on the landing where the car lands.

FIG. 1 is a diagram showing an overall schematic configuration of an elevator having an elevator system according to an embodiment of the present invention. FIG. 2 is a perspective view of a car door attached to the elevator car of FIG. 1 as viewed from the front. FIG. 3 is a front view showing a pressing force detector of the elevator system shown in FIG. 4 is a cross-sectional view of the pressing force detector shown in FIG. 3 taken along line IV-IV. FIG. 5 is a front view showing a lower end portion of the car door shown in FIG. FIG. 6 is a diagram for explaining the operation of the elevator system shown in FIG. 1 when the car is lowered in a state where a foreign object is sandwiched. FIG. 7 is a diagram for explaining the operation of the elevator system shown in FIG. 1 when the car is lowered in a state in which a foreign object is sandwiched. FIG. 8 is a diagram for explaining the operation of the elevator system shown in FIG. 1 when the car is lifted in a state in which a foreign object is sandwiched. FIG. 9 is a diagram for explaining the operation of the elevator system shown in FIG. 1 when the car rises in a state where foreign objects are sandwiched. FIG. 10 is a perspective view showing a pressing force detector for explaining a modification of the elevator system shown in FIG. FIG. 11 is a view for explaining another modified example of the elevator system shown in FIG. 1 and is a front view showing a car door having a single-open structure.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, an elevator apparatus to which an elevator system according to an embodiment of the present invention is applied will be described with reference to FIGS. 1 and 2.

  In the following description, when viewed from the car door side, the direction in which the elevator car door opens and closes is the left-right direction, the direction in which the passenger leaves the car is the front, and the direction in which the passenger enters the car is the rear The vertical direction is referred to as the vertical direction.

  As shown in FIG. 1, an elevator apparatus 1 includes a car 3 that can be moved up and down in a hoistway 2, a counterweight 5 that is connected to the car 3 through a rope 4, and a car through the rope 4. 3 and a hoisting machine (driving device) 6 for raising and lowering the counterweight 5. Among these, a control device 7 is connected to the hoisting machine 6. In such a configuration, the control device 7 controls the hoisting machine 6 so that the hoisting machine 6 winds the rope 4 and the car 3 and the counterweight 5 are moved up and down. Is raised and lowered between the landings 8a and 8b respectively provided on a plurality of floors of the building where the is installed.

  A landing door 9 is provided at each landing 8a, 8b, and a car door 10 is provided at the car 3. The landing door 9 and the car door 10 are configured to open and close in conjunction with each other. When the car 3 reaches the landings 8a and 8b, the landing door 9 and the car door 10 are interlocked to open the elevator door 11, and the elevator passengers get in and out of the car 3 in the longitudinal direction D2. It is possible. On the other hand, when the passengers get on and off, the car door 10 and the landing door 9 are interlocked and closed so that the elevator entrance 11 is closed.

  Each hall 8a, 8b is provided with a car call button that can be operated by the user to perform car call registration. The car 3 is provided with a destination floor operation button that can be operated by the user in order to register the destination floor of the car 3. Then, the control device 7 controls the driving device 6 according to the car call registration and the destination floor registration described above, and arrives at the car 3 at the landings 8a and 8b where the car call is made or at the registered destination floor. It is designed to be floored.

  Next, details of the car door according to the present embodiment will be described below. Here, an example in which the car door has a double opening structure will be described.

  FIG. 2 is a perspective view of the car door 10 provided on the car 3 as seen from the front. FIG. 5 is a front view of the lower end portion of the car door 10 as viewed from the front. 2 and 5 show the car door 10 when the door is closed. 2 and 5, reference numerals 10p and 10p denote door panels. Reference numeral 12 indicates a threshold. As shown in FIG. 2, angle members 13 and 14 are erected in the vertical direction at both left and right ends of the sill 12. On the door panels 10p, 10p, the header case 16 is supported horizontally by the angle members 13, 14 in the left-right direction D3. A door rail 18 is horizontally attached to the header case 16 in the left-right direction D3.

  The door hangers 20 and 20 are provided with rollers 22 and 23 whose outer periphery is made of a rubber member. The door panels 10p and 10p are opened and closed in the left-right direction D3 while being suspended by the door hangers 20 and 20 via rollers 22 and 23 that roll on the door rail 18. As shown in FIG. 5, door shoes 24 and 25 are provided at the lower ends of the door panels 10p and 10p. The door shoes 24, 25 are inserted into the sill groove 15 of the sill 12, and the opening / closing operation of the door panels 10p, 10p in the left-right direction D3 is guided. As shown in FIG. 2, the front end surfaces 10a, 10a of the door panels 10p, 10p facing each other are abutted against each other when the door is closed.

  Next, an elevator system applied to the elevator apparatus as described above will be described with reference to FIGS. 1 to 9. The elevator system 30 takes in the trapping of foreign matter S (for example, string-like foreign matters such as leads connecting pets and owners, slender foreign matters such as umbrellas, clothes and bags) when the car door 10 is closed. It is detected while the car 3 is moving up and down. As shown in FIG. 1, the elevator system 30 includes an upper pressing force detector 31 provided at the upper portion of the car door 10, a lower pressing force detector 32 provided at the lower portion of the car door 10, and a driving device 6. And a control device 7. In the illustrated example, the elevator system 30 includes a signal transmission unit 33 that transmits a signal to the control device 7 when the pressing force is detected by the pressing force detectors 31 and 32. Hereinafter, a string-like foreign material will be described as an example of the foreign material S sandwiched between the car doors 10.

  The upper pressing force detector 31 and the lower pressing force detector 32 will be described in more detail. The upper pressing force detector 31 detects the pressing force applied to the upper part of the car door 10. More specifically, the upper pressing force detector 31 detects a pressing force applied from the foreign matter S when the car 3 is lowered while the foreign matter S is sandwiched between the car doors 10. For example, as shown in FIG. 6, when the car 3 is lowered while the string-like foreign matter S is sandwiched between the car doors 10, both ends of the string-like foreign matter S are pulled between the landing 8 a and the car 3. As a result, tension is generated in the string-like foreign matter S. When the car 3 continues to descend, the upper part of the car door 10 is pressed by the string-like foreign material S in which the tension is generated. The upper pressing force detector 31 detects the pressing force applied from the foreign matter S in this way.

  The lower pressing force detector 32 detects the pressing force applied to the lower part of the car door 10. More specifically, the lower pressing force detector 32 detects a pressing force applied from the foreign matter S when the car 3 is lifted while the foreign matter S is sandwiched. For example, as shown in FIG. 8, when the car 3 rises with the string-like foreign matter S sandwiched between the car doors 10, both ends of the string-like foreign matter S are pulled between the landing 8 b and the car 3. As a result, tension is generated in the string-like foreign matter S. When the car 3 continues to rise, the lower part of the car door 10 is pressed by the string-like foreign material S in which the tension is generated. The lower pressing force detector 32 detects the pressing force applied from the foreign matter S in this way.

  Here, as shown in FIG. 6, when the car 3 is lowered while the foreign object S is sandwiched between the landing door 9 and the car door 10, the foreign object S is inserted into the front end surfaces 10 a and 10 p of the door panels 10 p and 10 p that are closed. It extends upward from between 10a. In the example shown in FIG. 2, the upper pressing force detector 31 is provided above the front end surfaces 10a and 10a of the door panels 10p and 10p when the door is closed so that the pressing force from the foreign matter S can be effectively received. It is provided at the position. In the illustrated example, the upper pressing force detector 31 is fixed at a position below the door rail 18 on the front surface of the header case 16, but is not limited thereto. The upper pressing force detector 31 may be provided above the header case 16 such as the top surface of the car 3. The upper pressing force detector 31 is provided so as not to come into contact with other articles in the hoistway 2.

  Further, as shown in FIG. 8, when the car 3 is lifted while the foreign object S is sandwiched between the landing door 9 and the car door 10, the foreign object S is at the front end surfaces 10a and 10a of the door panels 10p and 10p that are closed. It extends downward from between. In the example shown in FIG. 2 and FIG. 5, the lower pressing force detector 32 has the front end surfaces 10a, 10p of the door panels 10p, 10p when the door is closed so that the pressing force from the foreign matter S can be effectively received. It is fixed at a position below 10a. In the illustrated example, the lower pressing force detector 32 is fixed to the lower surface of the sill 12, but is not limited thereto. The lower pressing force detector 32 may be provided at other positions such as the bottom surface of the car 3, for example. The lower pressing force detector 32 is provided so as not to come into contact with other articles in the hoistway 2.

  As shown in FIG. 2, each of the pressing force detectors 31 and 32 has a protruding portion 41 that partially protrudes from the front surface of the car 3. By such a protrusion 41, when the car 3 moves up and down while the foreign object S is sandwiched, the pressing force can be effectively received from the foreign object S.

  Further, as shown in FIGS. 2 and 4, the pressing force detectors 31 and 32 have switching contacts 38 and 39 connected to the electric paths 31a and 32a, respectively. The electric paths 31a and 32a are connected to the control device 7 via a signal transmission unit 33 and a wiring 33a described later. Wirings 36 and 37 connecting the electric paths 31a and 32a and the switching contacts 38 and 39 are laid along the lower surface of the door rail 18 or the lower surface of the sill 12 so as not to hinder the opening and closing operation of the door panels 10p and 10p.

  As shown in FIGS. 3 and 4, the pressing force detectors 31 and 32 have an opening / closing mechanism 40 that opens and closes the opening / closing contacts 38 and 39, respectively. A part of the opening / closing mechanism 40 forms the protrusion 41 described above. The switching mechanism 40 closes the switching contacts 38 and 39 when the protruding portion 41 does not receive the pressing force from the foreign matter S, and closes the switching contacts 38 and 39 when the protruding portion 41 receives the pressing force from the foreign matter S. It is supposed to open.

  More specifically, the opening / closing mechanism 40 includes a lever 43 provided to be rotatable around an axis extending in the left-right direction D3, and a housing 34 that accommodates at least a part of the lever 43. The casing 34 has a substantially rectangular parallelepiped box shape, a pair of side walls 34a, 34a facing in the left-right direction, a front wall 34c and a rear wall 34b facing in the front-rear direction, a top surface 34d and a bottom surface facing in the up-down direction. 34e. An opening 34f is provided in the front wall 34c.

  The lever 43 is supported by a shaft 42 extending in the left-right direction D3 within the housing 34. Both end portions of the shaft 42 are supported by a pair of side walls 34a, 34a of the housing 34. In the illustrated example, the lever 43 is provided so as to be rotatable around the shaft 42. The lever 43 is an L-shaped member having a portion that extends substantially in the vertical direction and a portion that extends forward from one end (lower end) of the portion. This forwardly extending portion forms one end (lower end) 43a of the lever 43.

  The opening / closing mechanism 40 also includes a biasing member 44 that biases one end 43a of the lever 43 forward. In the illustrated example, the urging member 44 is a spring. The urging member 44 is disposed between the one end portion 43a of the lever 43 and the rear wall 34b of the housing 34. By being urged by the urging member 44, the one end portion 43a of the lever 43 is forward of the front wall 34c of the housing 34 through the opening 34f in a state where no pressing force is applied to the one end portion 43a. Is maintained in a protruding state. Further, the one end portion 43a is biased by the biasing member 44, so that the one end portion 43a is maintained in a state of projecting forward from the front wall 34c without being affected by vibration or wind pressure. Note that one end portion 43a of the lever 43 forms the protrusion 41 described above.

  Here, as described above, the pressing force detectors 31 and 32 are provided so as not to come into contact with other articles in the hoistway 2. Therefore, the protruding amount of the protruding portion 41 from the housing 34 is adjusted so that the protruding portion 41 protrudes from the front surface of the car 3, but does not come into contact with other articles in the hoistway 2. Specifically, it is adjusted by adjusting the position of the shaft 42 that supports the lever 43, the size of the biasing member 44, and the like.

  As shown in FIG. 4, one of the above-described switching contacts 38, 39 is fixed to the rear surface of the other end (upper end) 43 b of the lever 43. As a result, the contact point 39 moves substantially in the front-rear direction D2 as the lever 43 rotates. The other open / close contact 38 is fixed to the front surface of the rear wall 34b of the housing 34. The other contact point 38 is disposed at a position facing the one contact point 39. For this reason, the pair of switching contacts 38, 39 can be opened and closed by rotating the lever 43 to move the switching contact 39 in the front-rear direction D2. In the illustrated example, when the pressing force is not applied to the protruding portion 41 of the lever 43, the switching contacts 38 and 39 are closed. When the pressing force is applied to the projecting portion 41 of the lever 43 and the lever 43 rotates around the shaft 42, the open / close contacts 38 and 39 are opened. As described above, the one end portion 43a is maintained in a state of protruding forward from the front wall 34c without being affected by vibration or wind pressure by the urging member 44. This prevents the open / close contacts 38 and 39 from opening due to the influence of vibration and wind pressure.

  As shown in FIG. 3, the opening / closing mechanism 40 further includes a rod-like member 45 that is provided at the tip of the protruding portion 41 and extends horizontally in the left-right direction D3. In the illustrated example, the rod-like member 45 is connected to the tip of the protruding portion 41 of the lever 43 so as to be replaceable by screwing or the like. Thereby, when the rod-shaped member 45 is damaged by receiving an excessive pressing force from the foreign matter S, only the rod-shaped member 45 can be replaced. However, the rod-like member 45 may be connected to the tip of the protruding portion 41 so as not to be separated by welding or the like, or may be formed integrally with the lever 43. The length Wc of the rod-like member 45 is larger than the width Wb of the lever 43. Thereby, the pressing force from the foreign matter S can be received in a range wider than the width Wb of the lever 43. Therefore, the foreign object S can be detected in a wider range than the width Wb of the lever 43.

  As can be understood from FIG. 2, the protrusion 41 (bar-like member 45) of the opening / closing mechanism 40 of the upper pressing force detector 31 suspends one door panel 10 p when the door 3 is closed in a plan view of the car 3. It extends over a region between the hanger roller 22 and the hanger roller 23 that suspends the other door panel 10p. Thereby, the protrusion 41 of the upper pressing force detector 31 can effectively receive the pressing force from the foreign matter S when the car 3 is lowered while the foreign matter S is sandwiched.

  Further, as can be understood from FIG. 5, the protrusion 41 (bar-like member 45) of the opening / closing mechanism 40 of the lower pressing force detector 32 is located on one door panel 10 p when the door 3 is closed in the plan view of the car 3. It extends over a region between the door shoe 24 provided and the door shoe 25 provided on the other door panel 10p. Thus, the protruding portion 41 of the lower pressing force detector 32 can effectively receive the pressing force from the foreign matter S when the car 3 is lifted while the foreign matter S is sandwiched.

  The signal transmission unit 33 is connected to the electric paths 31a and 31b connected to the switching contacts 38 and 39 of the upper pressing force detector 31 or the lower pressing force detector 32. In addition, the signal transmission unit 33 is connected to the control device 7 via the wiring 33a. When the current flowing through the electric circuit 31a or the electric circuit 31b is interrupted, the signal transmission unit 33 transmits a signal to the control device 7 via the wiring 33a.

  When receiving a signal from the signal transmission unit 33, the control device 7 switches the operation mode from the normal operation mode to the emergency operation mode. Then, the control device 7 controls the driving device 6 to stop the car 3, and then the landing where the car 3 has landed immediately before the pressing force is detected by the pressing force detectors 31 and 32. The car 3 is to be landed. Further, after landing on the landing, the control device 7 switches the operation mode from the emergency operation mode to the normal operation mode. Here, the normal operation mode refers to an operation mode in which operation is performed according to the above-described car call registration and destination floor registration. Further, the emergency operation mode refers to an operation mode in which operation is performed in accordance with the above-described car call registration and destination floor registration.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the operation of the elevator apparatus 1 and the elevator system 30 when the elevator apparatus 1 is started up and during operation in the normal operation mode will be described.

  When the elevator apparatus 1 is activated, the control device 7 and the signal transmission unit 33 are activated. When the control device 7 and the signal transmission unit 33 are activated, the car door 10 is opened and closed. Then, after the car door 10 is closed, the control device 7 determines whether or not a signal is received from the signal transmission unit 33. Thereby, it is possible to determine whether or not the pressing force detectors 31 and 32, the electric paths 31a and 31b, and the signal transmission unit 33 are functioning normally. If no signal is received, the control device 7 operates in the normal operation mode. The determination of whether or not the pressing force detectors 31, 32, the electric paths 31a, 31b, and the signal sending unit 33 are functioning normally is not limited to when the control device 7 and the signal sending unit 33 are activated, but the elevator device 1 It may be performed periodically during operation.

  In the operation in the normal operation mode, for example, when car call registration is performed at the landing 8a, the control device 7 controls the driving device 6 to raise and lower the car 3 to the landing 8a and to land on the landing 8a. In addition, when the destination floor registration with the landing 8b as the destination floor is made in the car 3, for example, the control device 7 controls the driving device 6 to raise and lower the car 3 to the landing 8b and arrive at the landing 8b. Let the floor. When the car 3 reaches the landings 8a and 8b, the landing door 9 and the car door 10 open in conjunction with each other, and the elevator entrance 11 opens. Thereby, passengers of the elevator can get on and off in the front-rear direction D2 of the car 3. When the passengers get on and off, the car door 10 and the landing door 9 are closed in conjunction with each other, and the elevator entrance 11 is closed.

  Next, with reference to FIG. 6 and FIG. 7, the operation of the elevator apparatus 1 and the elevator system 30 when the car 3 is lowered while the foreign object S is sandwiched when the car door 10 is closed will be described.

  In the example shown in FIG. 6, when the car door 10 of the car 3 that has landed on the landing 8a is closed, the car door 10 sandwiches the string-like foreign matter S extending from the landing 8a into the car 3. The car 3 is lowered while the string-like foreign material S is sandwiched therebetween. In this case, when the car 3 continues to descend, both ends of the string-like foreign material S are pulled at the landing 8a and the car 3, and the string-like foreign material S is tensioned. Then, as shown in FIG. 7, the protruding portion 41 of the upper pressing force detector 31 is pressed backward by the string-like foreign matter S in which tension is generated. As a result, the lever 43 of the upper pressing force detector 31 rotates around the shaft 42, the other end 43b of the lever 43 moves forward, and the open / close contacts 38, 39 are opened. Then, the current flowing in the electric circuit 31a connected to the switching contacts 38 and 39 is interrupted. When the current flowing through the electric circuit 31a is interrupted, a signal is sent from the signal sending unit 33 to the control device 7 through the wiring 33a. When receiving a signal from the signal transmission unit 33, the control device 7 switches the operation mode from the normal operation mode to the emergency operation mode. Then, the driving device 6 is controlled to stop the car 3, and then land the car 3 on the landing 8a where the car 3 landed immediately before the pressing force is detected by the upper pressing force detector 31. Let Then, the landing door 9 and the car door 10 of the landing 8a open in conjunction with each other, and the elevator entrance 11 opens. After that, when the landing door 9 and the car door 10 of the landing 8a are interlocked to close and the entrance 11 is closed, the control device 7 switches the operation mode from the emergency operation mode to the normal operation mode, and is driven in the normal operation mode. Control the device 6.

  Next, with reference to FIG. 8 and FIG. 9, the operation of the elevator apparatus 1 and the elevator system 30 when the car 3 is lifted while the foreign object S is sandwiched when the car door 10 is closed will be described.

  In the example shown in FIG. 8, when the car door 10 of the car 3 that has been landing on the landing 8b is closed, the car door 10 sandwiches the string-like foreign matter S extending from the landing 8b into the car 3. In the state where the string-like foreign material S is sandwiched, the car 3 is raised. In this case, when the car 3 continues to rise, both ends of the string-like foreign material S are pulled at the landing 8b and the car 3, and the string-like foreign material S is tensioned. Then, as shown in FIG. 9, the protruding portion 41 of the lower pressing force detector 32 is pressed backward by the string-like foreign matter S in which tension is generated. As a result, the lever 43 of the lower pressing force detector 32 rotates around the shaft 42, the other end 43b of the lever 43 moves forward, and the open / close contacts 38, 39 are opened. Then, the current flowing in the electric circuit 32a connected to the switching contacts 38 and 39 is interrupted. When the current flowing through the electric circuit 32a is interrupted, a signal is transmitted from the signal transmission unit 33 to the control device 7 through the wiring 33a. When receiving a signal from the signal transmission unit 33, the control device 7 switches the operation mode from the normal operation mode to the emergency operation mode. Then, the driving device 6 is controlled to stop the car 3, and after that, the car 3 is put on the landing 8b where the car 3 has landed immediately before the pressing force is detected by the lower pressing force detector 32. Let the floor. Then, the landing door 9 and the car door 10 of the landing 8b open in conjunction with each other, and the elevator entrance 11 opens. After that, when the landing door 9 and the car door 10 of the landing 8b are interlocked to close and the entrance 11 is closed, the control device 7 switches the operation mode from the emergency operation mode to the normal operation mode, and is driven in the normal operation mode. Control the device 6.

  The elevator system 30 described above includes one upper pressing force detector 31 and one lower pressing force detector 32, but is not limited thereto. The elevator system 30 may include a plurality of upper pressing force detectors 31 and / or lower pressing force detectors 32. For example, the elevator system 30 includes two upper pressing force detectors 31 and / or lower pressing force detectors 32 in which the tips of the protrusions 41 are connected by a common bar-like member 45 as shown in FIG. May be. In this case, the foreign matter S can be detected in a wider range.

  Further, the upper pressing force detector 31 and the lower pressing force detector 32 may be applied to the car door 10 having a single opening structure. With reference to FIG. 11, a case where the upper pressing force detector 31 and the lower pressing force detector 32 are applied to a car door 10 having a single-open structure will be described.

  FIG. 11 is a front view of the car door 10 having a single opening structure as viewed from the front. FIG. 11 shows the car door 10 when the door is closed. In FIG. 11, reference numeral 10p indicates a door panel. Reference numeral 12 indicates a threshold. At the left end of the sill 12, a wall body 19 having a door contact surface 19a is erected in the vertical direction D1. Above the door panel 10p, a door rail 18 is attached horizontally in the left-right direction D3.

  The door hanger 20 is provided with a roller 22 whose outer periphery is made of a rubber member. The door panel 10p opens and closes in a state where it is suspended by the door hanger 20 via a roller 22 that rolls on the door rail 18. A door shoe 24 is provided at the lower end of the door panel 10p, and the door shoe 24 is inserted into the sill groove 15 of the sill 12. The door shoe 24 guides the opening / closing operation of the door panel 10p in the left-right direction D3. As shown in FIG. 11, when the door is closed, the front end surface 10a of the door panel 10p facing the wall body 19 is in contact with the door contact surface 19a of the wall body 19.

  Here, when the car 3 moves up and down with the foreign object S sandwiched between the landing door 9 and the car door 10, the foreign object S moves upward from between the front end surface 10a of the door panel 10p and the door contact surface 19a. Or it extends downward. In the illustrated example, the upper pressing force detector 31 and the lower pressing force detector 32 are respectively the door contact surfaces of the wall body 19 so that the pressing force from the foreign matter S can be effectively received. It is provided above and below 19a. Furthermore, as can be understood from FIG. 11, the protrusion 41 (bar-like member 45) of the opening / closing mechanism 40 of the upper pressing force detector 31 has a hanger roller 22 and a door contact surface 19a in the plan view of the car 3 when the door is closed. It extends over the area between. Further, the protrusion 41 of the opening / closing mechanism 40 of the lower pressing force detector 32 extends over a region between the door shoe 24 and the door contact surface 19a when the door is closed in the plan view of the car 3. . Thus, the protrusions 41 of the upper pressing force detector 31 and the lower pressing force detector 32 effectively apply the pressing force from the foreign matter S when the car 3 moves up and down while the foreign matter S is sandwiched between them. Can receive.

  As described above, according to the present embodiment, the elevator system 30 detects the trapping of the foreign matter S when the car door 10 provided in the elevator car 3 is closed, and is placed above the car door 10. Provided on the lower side of the car door 10 and the upper side pressure detector 31 that detects the pressing force applied from the foreign object S when the car 3 is lowered while the foreign object S is sandwiched. A lower pressing force detector 32 for detecting the pressing force applied from the foreign object S when the car 3 is lifted in a closed state, a drive device 6 for moving the car 3 up and down, and a control device 7 for controlling the drive device 6; It is equipped with. Then, when the upper pressing force detector 31 or the lower pressing force detector 32 detects the pressing force, the control device 7 stops the car 3, and then presses the pressing force detectors 31 and 32 with the pressing force. The driving device 6 is controlled so that the car 3 reaches the landing where the car 3 has landed immediately before the car is detected.

  Such an elevator system 30 can detect the trapping of the foreign matter S when the car door 10 is closed while the car 3 is raised and lowered. Then, when the trapping of the foreign matter S is detected, the platform returns to the landing where it is highly likely that the trapping of the foreign matter S has occurred. As a result, when the foreign object S is caught, the car 3 starts to move up and down without being caught, and the foreign object S is pulled, thereby preventing an accident. . Or the damage by an accident can be suppressed.

  In the present embodiment, the upper pressing force detector 31 and the lower pressing force detector 32 protrude from the front surface of the car 3, respectively, and the car 3 moves up and down with the foreign matter S sandwiched therebetween. In some cases, it has a protrusion 41 that receives a pressing force from the foreign matter S. By this protruding portion 41, the upper pressing force detector 31 and the lower pressing force detector 32 can effectively receive the pressing force from the foreign matter S.

  Further, in the present embodiment, the upper pressing force detector 31 and the lower pressing force detector 32 are respectively connected to the switching contacts 38, 39 provided in the electric paths 31a, 32a connected to the control device 7. When the protrusion 41 receives a pressing force from the foreign object S, the switching contacts 38 and 39 are closed when the protruding part 41 receives the pressing force from the foreign object S. And an opening / closing mechanism 40 for opening 38 and 39. Therefore, the detection of the pressing force by the upper pressing force detector 31 and the lower pressing force detector 32 can be easily performed based on the current flowing through the electric paths 31a and 32a.

  Further, in the present embodiment, the opening / closing mechanism 40 urges the lever 43 provided so as to be rotatable about an axis extending in the left-right direction D3, and one end 43a of the lever 43 forward, and this one end And an urging member 44 connected to the lever 43 so that 43a serves as the projecting portion 41. Such an opening / closing mechanism 40 can maintain the one end portion 43a of the lever 43 forming the protruding portion 41 in a state of protruding from the front surface of the car 3 while the protruding portion 41 is not receiving a pressing force.

  In the present embodiment, the opening / closing mechanism 40 further includes a rod-like member 45 provided in the front end of the protruding portion 41 and extending in the left-right direction D3. The length Wc of the rod-like member 45 is larger than the width Wb of the lever 43. Thereby, the pressing force detectors 31 and 32 can detect the trapping of the foreign matter S in a range wider than the width Wb of the lever 43.

  Further, in the present embodiment, the car door 10 forms a double door and includes a pair of door panels 10p and 10p having front end surfaces 10a facing each other. The upper pressing force detector 31 and the lower pressing force detector 32 are provided at positions above and below the front end surfaces 10a and 10a, respectively, when the door is closed. Here, the foreign matter S sandwiched between the front end surfaces 10a, 10a of the door panels 10p, 10p that are closed doors extends upward or downward from between the front end surfaces 10a, 10a as the car 3 moves up and down. Therefore, by arranging the upper pressing force detector 31 and the lower pressing force detector 32 at the above-described positions, the pressing force detectors 31 and 32 are foreign substances that extend upward or downward from between the front end surfaces 10a and 10a. The pressing force from S can be received effectively.

  As described above, the car door 10 may include a door panel 10p constituting a single door. In this case, the foreign matter S sandwiched between the front end surface 10a of the door panel 10p and the door contact surface 19a extends upward or downward from between the front end surface 10a and the door contact surface 19a as the car 3 moves up and down. put out. Therefore, when the car door 10 has a single-open structure, the upper pressing force detector 31 and the lower pressing force detector 32 are respectively connected to the door contact surface of the wall body 19 with which the front end surface 10a of the door panel 10p abuts when the door is closed. By providing above and below 19a, it is possible to effectively apply the pressing force from the foreign matter S extending upward or downward from between the front end surface 10a and the door contact surface 19a to the pressing force detectors 31 and 32. it can.

  In the present embodiment, the control device 7 controls the driving device 6 in the normal operation mode after landing on the landing. As a result, the elevator 1 can quickly return to normal operation.

  The embodiment of the present invention has been described in detail above. However, the elevator system according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. It is.

  1: Elevator, 2: Hoistway, 3: Car, 6: Drive, 7: Controller, 8a, 8b: Platform, 10: Car door, 10p: Door panel, 22,23: Hanger roller, 24,25: Door shoe, 30: Elevator system, 31: Upper pressing force detector, 32: Lower pressing force detector, 41: Projection, 43: Lever, 44: Biasing member, 36,38: Open / close contact, 45: Bar-shaped member , S: Foreign matter

Claims (5)

An elevator system that detects the trapping of foreign objects when a car door provided in an elevator car is closed,
An upper pressing force detector that is provided at an upper portion of the car door and detects a pressing force applied from the foreign object when the car is lowered in a state where the foreign object is sandwiched;
A lower pressing force detector that is provided at a lower portion of the car door and detects a pressing force applied from the foreign object when the car is raised in a state where the foreign object is sandwiched;
A drive for raising and lowering the car;
A control device for controlling the driving device;
With
The upper pressing force detector and the lower pressing force detector project from the front surface of the car, respectively, and receive a pressing force from the foreign object when the car moves up and down with the foreign object sandwiched therebetween. Has a protrusion,
Each of the upper pressing force detector and the lower pressing force detector includes an open / close contact provided in an electric circuit connected to the control device, a part of the protrusion, and the protrusion is the foreign matter. An open / close mechanism that closes the open / close contact when no pressing force is received from, and opens the open / close contact when the protruding portion receives a pressing force from the foreign matter, and
The opening / closing mechanism is coupled to the lever so that the lever can be rotated around an axis extending in the left-right direction, and one end of the lever is biased forward and the one end is used as the projecting portion. A biasing member, and
The control device stops the car when the upper pressing force detector or the lower pressing force detector detects the pressing force, and then immediately before the pressing force is detected by the pressing force detector. An elevator system that controls the driving device so that the car is landed at a landing where the car is landed. The opening / closing mechanism further includes a bar-like member provided at the tip of the protruding portion and extending in the left-right direction,
The length of the rod-shaped member is greater than the width of the lever, elevator system according to claim 1. The car door constitutes a double door and includes a pair of door panels having front end surfaces facing each other,
The elevator system according to claim 1 or 2 , wherein the upper pressing force detector and the lower pressing force detector are provided at positions that are above and below the front end surface, respectively, when the door is closed. The car door includes a door panel constituting a single door,
The upper pressure detector and the lower pressure detectors, respectively, the distal end surface of the door panel to the door closed is provided above and below the doorstop face abutting wall, according to claim 1 or 2 The elevator system described in. The elevator system according to any one of claims 1 to 4 , wherein the control device controls the driving device in a normal operation mode after landing on the landing.

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