CN117500743A - Door device of elevator - Google Patents

Abstract

In the door device of the elevator, the sill-side drop preventing member has a sill-side fixing portion and a sill-side projecting portion, the sill-side fixing portion is fixed in the sill groove, and the sill-side projecting portion projects from the sill-side fixing portion in a door moving direction, i.e., an opening direction when the door opens the elevator entrance. The door-side anti-drop member has a door-side fixing portion fixed to a lower portion of the door main body and a door-side protruding portion protruding from the door-side fixing portion in a closing direction, which is a moving direction of the door when the door closes the elevator entrance. In a state where the door completely closes the elevator entrance, at least a part of the door-side protruding portion is located in a position away downward from the sill-side protruding portion in the sill groove.

Description

Door device of elevator

Technical Field

The present disclosure relates to a door device for an elevator for opening and closing an elevator entrance.

Background

In a conventional door device for an elevator, a guide shoe is attached to a lower end portion of a sliding door that opens and closes an elevator entrance. The sill of the elevator doorway is provided with a guide groove. The guide shoe is inserted into the guide groove. In the door device of the existing elevator, when the sliding door receives an external force, the sliding door flexes, so that the guide shoe may be separated from the guide groove.

Conventionally, in order to prevent the guide shoe from being separated from the guide groove, a door device of an elevator in which a step is formed on a side surface of the guide groove has been proposed. When an external force acts on the sliding door, a part of the guide shoe is caught on the step of the guide groove, thereby preventing the guide shoe from being separated from the guide groove (for example, refer to patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2010-208745

Disclosure of Invention

Problems to be solved by the invention

However, in the conventional elevator door device shown in patent document 1, it is necessary to manufacture a special sill having a step formed on the side surface of the guide groove. Therefore, the manufacturing of the sill takes a lot of time and labor, and the manufacturing of the door device of the elevator takes a lot of time and labor.

The present disclosure has been made to solve the above-described problems, and an object thereof is to provide a door device of an elevator that can be easily manufactured.

Means for solving the problems

The door device of the elevator of the present disclosure comprises: a sill provided at a lower portion of the elevator doorway and provided with a sill groove along a lateral width direction of the elevator doorway; a door that moves in the lateral direction of the elevator entrance to open and close the elevator entrance; and a door-release preventing structure including a door main body and an insertion portion provided at a lower portion of the door main body, the insertion portion having a 1 st guide member inserted into the sill groove, the door-release preventing structure including a sill-side release preventing member and a sill-side release preventing member, the sill-side release preventing member including a sill-side fixing portion and a sill-side projecting portion, the sill-side fixing portion being fixed to the inside of the sill groove, the sill-side projecting portion projecting from the sill-side fixing portion in an opening direction, which is a moving direction of the door when the door opens the elevator doorway, the door-side release preventing member including a door-side fixing portion and a door-side projecting portion, the door-side fixing portion being fixed to the lower portion of the door main body, the door-side projecting portion projecting from the door-side fixing portion in a closing direction, which is a moving direction of the door when the door closes the elevator doorway, and in a state in which the door completely closes the elevator doorway, at least a part of the door-side projecting portion is located at a position that is spaced downward from the sill-side projecting portion.

Effects of the invention

According to the door device of the elevator of the present disclosure, the door device of the elevator can be easily manufactured.

Drawings

Fig. 1 is an upper side view showing an elevator of embodiment 1.

Fig. 2 is a front view showing the car door apparatus of fig. 1.

Fig. 3 is an enlarged view illustrating a portion III of fig. 2.

Fig. 4 is a cross-sectional view taken along line IV-IV of fig. 3.

Fig. 5 is an enlarged view illustrating the V portion of fig. 2.

Fig. 6 is a cross-sectional view taken along line VI-VI of fig. 5.

Fig. 7 is an enlarged view showing the position of the car sill with respect to the car door when the car sill of fig. 3 is lowered with respect to the car body by a restricting distance E.

Fig. 8 is an enlarged view showing a state in which the door-side protrusion of fig. 3 is caught by the sill-side protrusion from below.

Fig. 9 is a sectional view showing a state in which the 1 st guide member of fig. 4 is separated upward from the sill groove.

Detailed Description

The embodiments will be described below with reference to the drawings.

Embodiment 1

Fig. 1 is an upper side view showing an elevator of embodiment 1. In the figure, a machine room 2 is provided in an upper portion of a hoistway 1. A hoisting machine 3 as a driving device is provided in the machine room 2. The hoisting machine 3 has a drive sheave 4. The drive sheave 4 is rotated by the driving force of the hoisting machine 3.

A plurality of suspension bodies 5 are wound around the drive sheave 4. As the suspension body 5, a rope or a belt is used. In the hoistway 1, a car 6 and a counterweight, not shown, are suspended by a plurality of suspension bodies 5. The car 6 and the counterweight move in the vertical direction in the hoistway 1 by rotation of the drive sheave 4.

The car 6 is provided with a car doorway 7 serving as an elevator doorway. The car 6 is provided with a car door device 20 as a door device of an elevator. A door driving device, not shown, is provided in the car door device 20. The car door apparatus 20 opens and closes the car doorway 7 by the driving force of the door driving apparatus.

Landing 8 on each floor is provided with a landing entrance 9 as an elevator entrance. At each floor, the space in the hoistway 1 is opened to the landing 8 through the landing entrance 9. In a state where the car 6 is stopped at any one of the floors, the car entrance 7 is opposed to the landing entrance 9 provided at the floor at which the car 6 is stopped.

Landing door devices 40 as door devices of the elevator are provided at each floor. The landing door device 40 opens and closes the landing entrance 9. At the floor where the car 6 is stopped, the car door device 20 and the landing door device 40 face each other. Thereby, the landing door apparatus 40 is linked with the car door apparatus 20. At the floor where the car 6 stops, the car entrance 7 is opened and closed, and the landing entrance 9 is opened and closed.

The car 6 has a car body 61 and a car floor 62. The car doorway 7 is provided in the car body 61. An in-car space is formed in the car body 61.

At the floor where the car 6 stops, the elevator user can enter the car space of the car body 61 from the landing 8 through the landing entrance 9 and the car entrance 7. Further, at the floor where the car 6 stops, the user of the elevator can reach the landing 8 from the space in the car of the car body 61 through the car entrance 7 and the landing entrance 9.

The car 6 is provided with a vibration isolation device not shown and a stopper not shown. The car floor 62 is supported by a lower portion of the car body 61 via a vibration isolator. When a user who has entered the space in the car body 61 is mounted on the car floor 62, the car floor 62 receives a downward load from the user. The vibration isolator deforms according to the magnitude of the load received by the car floor 62.

When the car floor 62 is not loaded, the position of the car floor 62 with respect to the car body 61 becomes a floor reference position. When the car floor 62 receives a downward load, the car floor 62 is lowered downward from the floor reference position with respect to the car body 61 according to the magnitude of the load received by the car floor 62.

The stopper restricts the sinking amount of the car floor 62 with respect to the car body 61. When the car floor 62 is displaced downward from the floor reference position with respect to the car body 61 by the restriction distance E, the position of the car floor 62 with respect to the car body 61 becomes the floor lower limit position. At this time, the stopper prevents downward displacement of the car floor 62 with respect to the car body 61. That is, in the car 6, the car floor 62 is prevented from sinking downward with respect to the car body 61 beyond the floor lower limit position.

Fig. 2 is a front view showing the car door apparatus 20 of fig. 1. Fig. 2 shows the car door apparatus 20 when viewed from the landing 8 side. The car door apparatus 20 includes a car door supporting member 21, a car sill 22, a pair of car doors 23, and a pair of door drop prevention structures 24.

The car door supporting member 21 is disposed above the car doorway 7. The car door supporting member 21 is fixed to the car 6. The car door supporting member 21 has a car hanger case 211 and a car door rail 212.

The cage hanger case 211 is fixed to the cage main body 61. The car door rail 212 is fixed to the car hanger housing 211. The car door rail 212 is disposed along the lateral width direction of the car doorway 7. That is, the car door rail 212 is disposed along the left-right direction of fig. 2.

The car sill 22 is a sill fixed to the car floor 62. The car sill 22 is provided at a lower portion of the car doorway 7. The car sill 22 is disposed along the lateral direction of the car doorway 7. A sill groove 25 is provided in the car sill 22 along the lateral width direction of the car doorway 7. The sill groove 25 is opened upward.

A pair of car doors 23 is engaged with the car door rail 212. The pair of car doors 23 are guided by the car door rail 212, and can move in the lateral direction of the car doorway 7.

A car door interlocking mechanism unit, not shown, is provided in the car hanger case 211. The car door interlocking mechanism section interlocks the pair of car doors 23 with each other. As a result, the pair of car doors 23 can move in opposite directions along the lateral direction of the car doorway 7.

The door driving device is also provided to the cage hanger case 211. The door driving device generates a driving force for moving the pair of car doors 23. The driving force of the door driving device is transmitted to the pair of car doors 23 via the car door interlocking mechanism section. The pair of car doors 23 are moved in opposite directions by the driving force of the door driving device, thereby opening and closing the car doorway 7.

A car door full-close reference line P is provided at the car doorway 7. The car door full-close reference line P is a plumb line passing through the center of the car doorway 7 in the lateral direction. The pair of car doors 23 move in a direction away from the car door full-closing reference line P, thereby opening the car doorway 7. The pair of car doors 23 move in a direction approaching the car door full-closing reference line P, thereby closing the car doorway 7. That is, in the present embodiment, the car door apparatus 20 is a center-opening door apparatus.

Each car door 23 has a door hanger 231, a door main body 232, and an insertion portion 233.

The door hanger 231 is engaged with the car door rail 212. The door hanger 231 is fixed to an upper end portion of the door main body 232.

The door main body 232 is a panel suspended from the car door rail 212 via a door hanger 231. When the door hanger 231 moves along the car door rail 212, the door main body 232 opens and closes the car doorway 7.

The insertion portion 233 is provided at a lower portion of the door main body 232. The insertion portion 233 is inserted into the sill groove 25 of the car sill 22.

The insertion portion 233 has a 1 st guide member 234 and a 2 nd guide member 235. The 1 st guide member 234 and the 2 nd guide member 235 are provided at the lower portion of the door main body 232, respectively.

Here, the moving direction of the car door 23 when the car door 23 closes the car doorway 7 is set to the closing direction. The moving direction of the car door 23 when the car door 23 opens the car doorway 7 is set to the opening direction. In this case, the position of the 2 nd guide member 235 is separated from the position of the 1 st guide member 234 in the opening direction.

The door main body 232 has a door-closing end portion at one of the lateral width direction ends of the car doorway 7, which is close to the car door full-closing reference line P, and a door-opening end portion at one of the lateral width direction ends, which is distant from the car door full-closing reference line P. In this case, the 1 st guide member 234 is provided at a lower portion of the door-closing side end portion of the door main body 232. Further, the 2 nd guide member 235 is provided at a lower portion of the door-opening side end portion of the door main body 232.

The 1 st guide member 234 and the 2 nd guide member 235 are inserted into the sill groove 25 of the car sill 22, respectively. Each car door 23 moves along the lateral direction of the car doorway 7 while maintaining the state in which the 1 st guide member 234 and the 2 nd guide member 235 are inserted into the sill groove 25.

One door-escape prevention structure 24 of the pair of door-escape prevention structures 24 corresponds to one car door 23, and the other door-escape prevention structure 24 corresponds to the other car door 23. The pair of door drop prevention structures 24 each make the insertion portion 233 of the corresponding car door 23 difficult to drop from the sill groove 25. Each door release prevention structure 24 includes a door side release prevention member 26, a sill side release prevention member 27, and an additional release prevention member 28.

The sill-side fall prevention member 27 is separate from the car sill 22. The sill-side drop prevention member 27 is fixed in the sill groove 25. The sill-side safety member 27 is disposed at a position apart from the position of the 1 st guide member 234 in the closing direction when the car door 23 completely closes the car doorway 7.

Each sill-side locking member 27 in the pair of door locking structures 24 is disposed at a symmetrical position with respect to the car door full-closing reference line P. In the present embodiment, the sill-side drop prevention members 27 of the pair of door drop prevention structures 24 are integrally connected to each other.

The door-side retaining member 26 and the additional retaining member 28 are fixed to the lower portion of the car door 23. The door-side retaining member 26 and the additional retaining member 28 are inserted into the sill groove 25. The position of the additional retaining member 28 is separated from the position of the door-side retaining member 26 in the opening direction. In the present embodiment, the door-side escape prevention member 26 is fixed to a lower portion of the door-closing-side end portion of the door main body 232. In the present embodiment, the additional retaining member 28 is fixed to the lower portion of the door-opening side end portion of the door main body 232.

The door-side retaining member 26 and the additional retaining member 28 move in a direction approaching the sill-side retaining member 27 with the movement of the car door 23 in the closing direction. The door-side retaining member 26 and the additional retaining member 28 move away from the sill-side retaining member 27 in response to movement of the car door 23 in the opening direction.

Fig. 3 is an enlarged view illustrating a portion III of fig. 2. Further, fig. 4 is a sectional view taken along the IV-IV line of fig. 3. The 1 st guide member 234 has a 1 st mounting plate 236 and a 1 st shoe 237.

The 1 st mounting plate 236 is fixed to a surface of the door main body 232 on the landing 8 side. Further, the 1 st mounting plate 236 protrudes from the lower portion of the door main body 232 into the sill groove 25. Here, the direction perpendicular to the longitudinal direction of the sill groove 25 and horizontal is referred to as the width direction of the sill groove 25. In this case, the 1 st mounting plate 236 is fixed to the lower portion of the door main body 232 such that the thickness direction of the 1 st mounting plate 236 coincides with the width direction of the sill groove 25.

The 1 st shoe 237 is fixed to the lower end portion of the 1 st mounting plate 236. In addition, the 1 st shoe 237 is located in the sill groove 25. As shown in fig. 4, the 1 st shoe 237 has a larger dimension in the width direction of the sill groove 25 than the 1 st mounting plate 236. When the door-side retaining member 26 is viewed along the lateral width direction of the car doorway 7, the door-side retaining member 26 is located within the range of the 1 st shoe 237 in the width direction of the sill groove 25.

As shown in fig. 4, the inner surface of the sill groove 25 has a groove 1 st side 251, a groove 2 nd side 252, and a groove bottom 253. The groove 1 st side 251 and the groove 2 nd side 252 face each other in the width direction of the sill groove 25. The position of the groove 2 nd side 252 is closer to the car floor 62 than the position of the groove 1 st side 251. The groove bottom surface 253 is the bottom surface of the sill groove 25. That is, the groove bottom surface 253 is a surface connecting the lower end portions of the groove 1 st side surface 251 and the groove 2 nd side surface 252.

The upper surface of the car sill 22 has a sill 1 upper surface 223 adjacent to a slot 1 side 251 and a sill 2 upper surface 224 adjacent to a slot 2 side 252. The upper surface 224 of sill 2 is located closer to the car floor 62 than the upper surface 223 of sill 1.

A groove 1 upper inclined surface 254 is formed between the sill 1 upper surface 223 and the groove 1 side surface 251. The groove 1 upper inclined surface 254 is an inclined surface inclined downward from the sill 1 upper surface 223 toward the groove 1 side surface 251. Thus, the groove 1 upper inclined surface 254 is inclined downward from the sill 1 upper surface 223 toward the inside of the sill groove 25.

A groove 2 upper inclined surface 255 is formed between the sill 2 upper surface 224 and the groove 2 side surface 252. The groove 2 upper inclined surface 255 is an inclined surface inclined downward from the sill 2 upper surface 224 toward the groove 2 side surface 252. Thus, the groove 2 upper inclined surface 255 is inclined downward from the sill 2 upper surface 224 toward the inside of the sill groove 25.

The outer surface of the 1 st shoe 237 has a 1 st guide 1 st side 234a, a 1 st guide 2 nd side 234b, a 1 st guide lower surface 234c, a 1 st guide 1 st lower inclined surface 234d, and a 1 st guide 2 nd lower inclined surface 234e.

The 1 st guide 1 st side 234a is opposite to the groove 1 st side 251. The 1 st guide 2 nd side 234b is opposite the slot 2 nd side 252. Thus, the 1 st guide 1 st side 234a and the 1 st guide 2 nd side 234b face opposite sides to each other in the width direction of the sill groove 25. When the door-side retaining member 26 is viewed in the lateral direction of the car doorway 7, the door-side retaining member 26 is located between the 1 st guide 1 st side 234a and the 1 st guide 2 nd side 234 b.

The 1 st guide lower surface 234c is the lower surface of the 1 st shoe 237. The 1 st guide lower surface 234c is opposed to the groove bottom surface 253. Thus, the 1 st guide lower surface 234c is directed downward. The 1 st guide lower surface 234c is located in a range between the 1 st guide 1 st side surface 234a and the 1 st guide 2 nd side surface 234b when viewed from above.

A 1 st guide 1 st lower inclined surface 234d is formed between the 1 st guide 1 st side surface 234a and the 1 st guide lower surface 234 c. The 1 st guide 1 st lower inclined surface 234d is an inclined surface inclined upward from the 1 st guide lower surface 234c toward the 1 st guide 1 st side surface 234 a. Thus, the 1 st guide 1 st lower inclined surface 234d is inclined downward from the lower end of the 1 st guide 1 st side surface 234a toward the inner side of the 1 st shoe 237 in the width direction of the sill groove 25.

A 1 st guide 2 nd lower inclined surface 234e is formed between the 1 st guide 2 nd side surface 234b and the 1 st guide lower surface 234 c. The 1 st guide 2 nd lower inclined surface 234e is an inclined surface inclined upward from the 1 st guide lower surface 234c toward the 1 st guide 2 nd side surface 234 b. Thus, the 1 st guide 2 nd lower inclined surface 234e is inclined downward from the lower end of the 1 st guide 2 nd side surface 234b toward the inner side of the 1 st shoe 237 in the width direction of the sill groove 25.

Here, the dimension of the groove 1 st upper inclined surface 254 in the width direction of the sill groove 25 is set to the groove inclined dimension A1. The dimension of the 1 st guide 1 st lower inclined surface 234d in the width direction of the sill groove 25 is defined as the 1 st guide inclined dimension B1. Further, the distance from the 1 st guide 1 st side surface 234a to the door-side retaining member 26 in the width direction of the sill groove 25 is set to the 1 st offset distance C1. In this case, the sum of the groove inclination dimension A1 and the 1 st guide inclination dimension B1 is larger than the 1 st offset distance C1. That is, the relationship of a1+b1> C1 holds. In the present embodiment, the 1 st offset distance C1 is larger than the 1 st guide inclination dimension B1. That is, the relationship of C1> B1 holds.

As shown in fig. 3, the upper surface of the sill-side preventive member 27 is located at the same height as the upper surface of the car sill 22. The sectional shape of the sill-side drop prevention member 27 in a plane perpendicular to the width direction of the sill groove 25 is the same at any position in the width direction of the sill groove 25. The sill-side drop prevention member 27 has a sill-side fixing portion 271 and a sill-side protruding portion 272.

The sill-side fixing portion 271 is fixed in the sill groove 25. In the pair of door drop prevention structures 24, the sill-side fixing portions 271 of the respective sill-side drop prevention members 27 are connected to each other. Each of the sill-side fixing portions 271 integrally connected to each other has a fixing surface 271a overlapping the groove bottom surface 253. A screw hole is provided in the fixing surface 271a.

The car sill 22 is provided with a bolt passage hole 221 and a plurality of discharge holes 222. The bolt passing holes 221 and the discharge holes 222 are through holes reaching the lower surface of the car sill 22 from the groove bottom 253.

The fixing bolt 29 as a fastener passes through the bolt passing hole 221. Each of the discharge holes 222 is a through hole for discharging foreign matter in the sill groove 25 to the lower side of the car sill 22. The discharge hole 222 is provided at least at a position below each of the door-side retaining member 26 and the additional retaining member 28 when the car door 23 completely closes the car doorway 7.

The fixing bolt 29 passing through the bolt passing hole 221 is screwed into a screw hole provided in the fixing surface 271 a. The sill-side fixing portions 271 integrally connected to each other are fixed to the groove bottom surface 253 by fixing bolts 29 passing through the bolt passing holes 221. Thus, each sill-side fixing portion 271 is detachable from the groove bottom surface 253. Therefore, each sill-side stopper 27 can be attached to and detached from the car sill 22.

The sill-side protrusion 272 protrudes from the sill-side fixing portion 271 in the opening direction. In the present embodiment, the sill-side protrusion 272 protrudes in the opening direction from the upper end of the sill-side fixing portion 271. Thereby, the sill-side projection 272 is held at a position spaced upward from the groove bottom surface 253.

The sill side protrusion 272 has a sill side arm 272a and a sill side hook 272b. The sill side arm 272a protrudes from the sill side fixing portion 271 in the opening direction. The sill side hook 272b protrudes downward from the sill side arm 272 a. In the present embodiment, a sill-side hook 272b is provided at one of the two ends of the sill-side arm 272a, which is remote from the sill-side fixing portion 271.

The door-side drop preventing member 26 is a plate-like member perpendicular to the width direction of the sill groove 25. The sectional shape of the door-side drop prevention member 26 in a plane perpendicular to the width direction of the sill groove 25 is the same at any position in the width direction of the sill groove 25.

The 1 st guide member 234 and the door-side drop prevention member 26 are fixed to the lower portion of the door main body 232 by a plurality of fixing bolts 30. Each of the fixing bolts 30 is a common fastener for fixing the 1 st guide member 234 and the door-side drop-off preventing member 26 to the lower portion of the door main body 232. In the present embodiment, the 1 st guide member 234 and the door-side drop prevention member 26 are fastened together to the lower portion of the door main body 232 by 2 fixing bolts 30.

The door-side drop prevention member 26 has a door-side fixing portion 261 and a door-side protruding portion 262.

The door-side fixed portion 261 has a fixed main body portion 261a and a lower protruding portion 261b. The fixed body 261a is provided with a plurality of long holes 263. The long holes 263 are provided at positions separated from each other in the lateral direction of the car doorway 7. Each long hole 263 is a long hole along the vertical direction. In the present embodiment, 2 long holes 263 are provided in the fixed body portion 261a.

A part of the fixed body 261a overlaps the 1 st mounting plate 236 of the 1 st guide member 234. Each fixing bolt 30 passes through each long hole 263. The fixing bolt 30 passing through the long hole 263 penetrates the 1 st mounting plate 236 and is screwed into the lower portion of the door main body 232. Thereby, the 1 st guide member 234 and the door-side drop prevention member 26 are fixed to the lower portion of the door main body 232. By loosening the fastening of the fixing bolts 30, the position of the door-side retaining member 26 with respect to the door main body 232 can be adjusted in the vertical direction.

The downward protruding portion 261b protrudes downward from the fixed body portion 261 a. The lower protruding portion 261b is disposed at a position offset in the closing direction from the 1 st shoe 237, that is, at a position closer to the sill-side stopper 27 than the 1 st shoe 237. Thus, the door-side drop prevention member 26 is fixed to the lower portion of the door main body 232 while avoiding the 1 st shoe 237.

The lower protruding portion 261b protrudes from the fixed body portion 261a to a position closer to the groove bottom surface 253 than the position of the 1 st shoe 237. Thus, the position of the lower end portion of the door-side drop-off preventing member 26 is lower than the position of the lower end portion of the 1 st guide member 234.

The door-side projecting portion 262 projects from the lower projecting portion 261b of the door-side fixed portion 261 in the closing direction. In the present embodiment, the door-side protruding portion 262 protrudes from the lower end portion of the lower protruding portion 261b in the closing direction. Thereby, the door-side protruding portion 262 is held at a position lower than the sill-side protruding portion 272 and the 1 st shoe 237, respectively.

The door-side projection 262 has a door-side arm portion 262a and a door-side hook portion 262b. The door-side arm 262a protrudes from the lower protruding portion 261b in the closing direction. The door-side hook 262b protrudes upward from the door-side arm 262 a. In the present embodiment, a door-side hook 262b is provided at an end of the door-side arm 262a on a side away from the door-side fixing portion 261.

In a state where the car door 23 completely closes the car doorway 7, the door-side fixing portion 261 is located at a position apart from the sill-side locking member 27 in the opening direction. In addition, in a state where the car door 23 completely closes the car doorway 7, a part of the door-side projection 262 is located at a position separated downward from the sill-side projection 272 in the sill groove 25. Thus, when the door-side retaining member 26 and the sill-side retaining member 27 are viewed from above in a state in which the car door 23 completely closes the car doorway 7, a part of the door-side protruding portion 262 overlaps with the area of the sill-side protruding portion 272. In a state where the car door 23 completely closes the car doorway 7, the position of the door-side hook 262b is closer to the sill-side fixing portion 271 than the position of the sill-side hook 272 b.

In a state where the car door 23 completely closes the car doorway 7 and the car floor 62 is not subjected to a downward load, the distance in the vertical direction from the sill-side projection 272 to the door-side projection 262 becomes the allowable distance D. The allowable distance D is greater than the limit distance E when the car floor 62 is submerged from the floor reference position to the floor lower limit position.

Fig. 5 is an enlarged view illustrating the V portion of fig. 2. Further, fig. 6 is a sectional view taken along the VI-VI line of fig. 5. The 2 nd guide member 235 has a 2 nd mounting plate 238 and a 2 nd shoe 239.

The 2 nd mounting plate 238 is fixed to a surface of the door main body 232 on the landing 8 side. Further, the 2 nd mounting plate 238 protrudes from the lower portion of the door main body 232 into the sill groove 25. The 2 nd mounting plate 238 is fixed to the lower portion of the door main body 232 such that the thickness direction of the 2 nd mounting plate 238 coincides with the width direction of the sill groove 25.

A 2 nd boot 239 is fixed to the lower end portion of the 2 nd mounting plate 238. In addition, the 2 nd shoe 239 is located within the sill groove 25. As shown in fig. 6, the size of the 2 nd shoe 239 in the width direction of the sill groove 25 is larger than the size of the 2 nd mounting plate 238 in the width direction of the sill groove 25. When the additional retaining member 28 is viewed in the lateral direction of the car doorway 7, the additional retaining member 28 is located within the range of the 2 nd shoe 239 in the width direction of the sill groove 25.

The outer surface of the 2 nd shoe 239 has a 2 nd guide 1 st side surface 235a, a 2 nd guide 2 nd side surface 235b, a 2 nd guide lower surface 235c, a 2 nd guide 1 st lower inclined surface 235d, and a 2 nd guide 2 nd lower inclined surface 235e.

The 2 nd guide 1 st side 235a is opposite the groove 1 st side 251. The 2 nd guide 2 nd side 235b is opposite the slot 2 nd side 252. Thus, the 2 nd guide 1 st side surface 235a and the 2 nd guide 2 nd side surface 235b face opposite sides to each other in the width direction of the sill groove 25. When the additional retaining member 28 is viewed in the lateral direction of the car doorway 7, the additional retaining member 28 is positioned between the 2 nd guide 1 st side surface 235a and the 2 nd guide 2 nd side surface 235 b.

The 2 nd guiding lower surface 235c is the lower surface of the 2 nd shoe 239. The 2 nd guide lower surface 235c is opposite the groove bottom surface 253. Thereby, the 2 nd guide lower surface 235c is directed downward. The 2 nd guide lower surface 235c is located in a range between the 2 nd guide 1 st side surface 235a and the 2 nd guide 2 nd side surface 235b when viewed from above.

The 2 nd guide 1 st lower inclined surface 235d is formed between the 2 nd guide 1 st side surface 235a and the 2 nd guide lower surface 235 c. The 2 nd guide 1 st lower inclined surface 235d is an inclined surface inclined upward from the 2 nd guide lower surface 235c toward the 2 nd guide 1 st side surface 235 a. Thus, the 2 nd guide 1 st lower inclined surface 235d is inclined downward from the lower end portion of the 2 nd guide 1 st side surface 235a toward the inside of the 2 nd shoe 239 in the width direction of the sill groove 25.

A 2 nd guide 2 nd lower inclined surface 235e is formed between the 2 nd guide 2 nd side surface 235b and the 2 nd guide lower surface 235 c. The 2 nd guide 2 nd lower inclined surface 235e is an inclined surface inclined upward from the 2 nd guide lower surface 235c toward the 2 nd guide 2 nd side surface 235 b. Thus, the 2 nd guide 2 nd lower inclined surface 235e is inclined downward from the lower end portion of the 2 nd guide 2 nd side surface 235b toward the inside of the 2 nd shoe 239 in the width direction of the sill groove 25.

Here, the dimension of the 2 nd guide 1 st lower inclined surface 235d in the width direction of the sill groove 25 is set to the 2 nd guide inclined dimension B2. The distance from the 2 nd guide 1 st side surface 235a to the additional retaining member 28 in the width direction of the sill groove 25 is set to be the 2 nd offset distance C2. In this case, the sum of the groove inclination dimension A1 and the 2 nd guide inclination dimension B2 is larger than the 2 nd offset distance C2. That is, the relationship of a1+b2> C2 holds. In the present embodiment, the 2 nd offset distance C2 is larger than the 2 nd guide inclination dimension B2. That is, the relationship of C2> B2 holds.

The additional retaining member 28 is a plate-like member perpendicular to the width direction of the sill groove 25. The 2 nd guide member 235 and the additional retaining member 28 are fixed to the lower portion of the door main body 232 by a plurality of fixing bolts 31. Each fixing bolt 31 is a common fastener for fixing the 2 nd guide member 235 and the additional retaining member 28 to the lower portion of the door main body 232. In the present embodiment, the 2 nd guide member 235 and the additional retaining member 28 are fastened together to the lower portion of the door main body 232 by 2 fixing bolts 31.

The additional retaining member 28 includes an additional fixing portion 281 and an additional protruding portion 282.

The additional fixing portion 281 has a fixing body portion 281a and a lower protruding portion 281b. The fixing body portion 281a is provided with a plurality of long holes 283. The long holes 283 are provided so as to be separated from each other in the lateral direction of the car doorway 7. The long axis of each long hole 283 is an axis along the vertical direction. In the present embodiment, 2 long holes 283 are provided in the fixed body portion 281a.

A part of the fixing body portion 281a overlaps with the 2 nd mounting plate 238 of the 2 nd guide member 235. Each fixing bolt 31 passes through each long hole 283. The fixing bolt 31 passing through the long hole 283 penetrates the 2 nd mounting plate 238 and is screwed into the lower portion of the door main body 232. Thereby, the 2 nd guide member 235 and the additional escape prevention member 28 are fixed to the lower portion of the door main body 232. Therefore, by loosening the fastening of each fixing bolt 31, the position of the additional retaining member 28 with respect to the door main body 232 can be adjusted in the vertical direction.

The lower protruding portion 281b protrudes downward from the fixing body portion 281 a. The lower protruding portion 281b is disposed at a position offset from the 2 nd shoe 239 in the opening direction. Thus, the additional anti-slip member 28 is fixed to the lower portion of the door main body 232 while avoiding the 2 nd shoe 239.

The lower protruding portion 281b protrudes from the fixing body portion 281a to a position closer to the groove bottom surface 253 than the position of the 2 nd shoe 239. Thus, the position of the lower end of the additional retaining member 28 is lower than the position of the lower end of the 2 nd guide member 235.

The additional projection 282 projects in the opening direction from the lower projection 281b of the additional fixing portion 281. In the present embodiment, the additional projection 282 projects from the lower end portion of the lower projection 281b in the opening direction. Thereby, the additional projection 282 is held at a position lower than the 2 nd shoe 239.

The additional protrusion 282 has an additional arm 282a and an additional hook 282b. The additional arm 282a protrudes from the lower protruding portion 281b in the opening direction. The additional hook 282b protrudes upward from the additional arm 282 a.

The additional retaining member 28 has the same shape as the door-side retaining member 26. Therefore, the cross-sectional shape of the additional retaining member 28 in the plane perpendicular to the width direction of the sill groove 25 is the same at any position in the width direction of the sill groove 25. The direction of the additional retaining member 28 in the lateral direction of the car doorway 7 is opposite to the direction of the door-side retaining member 26 in the lateral direction of the car doorway 7.

As shown in fig. 1, the landing door device 40 of each floor has a landing door supporting member 41, a landing sill 42, and a pair of landing doors 43.

The landing door supporting member 41 is disposed above the landing doorway 9. The landing door supporting member 41 is fixed to the inner wall surface of the hoistway 1. The landing door supporting member 41 has the same structure as the car door supporting member 21.

The landing sill 42 is a sill fixed to the floor of the landing 8. The landing sill 42 is provided at a lower portion of the landing doorway 9. The landing sill 42 has the same structure as the car sill 22.

A pair of landing doors 43 are engaged with the landing door rails of the landing door supporting member 41. The pair of landing doors 43 are guided by the landing door rail, and can move in the lateral direction of the landing entrance 9.

The landing door supporting member 41 is provided with a landing door coupling mechanism, not shown. The landing door linkage mechanism section links the pair of landing doors 43 to each other. Thus, the pair of landing doors 43 can move in opposite directions along the transverse width direction of the landing entrance 9.

Like the car doorway 7, the landing doorway 9 is provided with a plumb line passing through the center of the landing doorway 9 in the lateral direction as a landing door full-closing reference line. The pair of landing doors 43 move in a direction away from the landing door full-closing reference line, thereby opening the landing entrance 9, and the pair of landing doors 43 move in a direction approaching the landing door full-closing reference line, thereby closing the landing entrance 9. That is, in the present embodiment, the landing door device 40 is a center-opening door device.

At the floor where the car 6 stops, the pair of car doors 23 face the pair of landing doors 43. Thus, the pair of landing doors 43 can be interlocked with the pair of car doors 23. Therefore, at the floor where the car 6 stops, the pair of car doors 23 move in opposite directions to each other, and thus the pair of landing doors 43 move in opposite directions to each other along the lateral width direction of the landing entrance 9. The pair of landing doors 43 move in opposite directions to each other along the transverse width direction of the landing entrance 9, thereby opening and closing the landing entrance 9.

Next, the operation will be described. When the pair of car doors 23 are moved in the lateral direction of the car doorway 7 by the driving force of the door driving device at the floor where the car 6 stops, the pair of landing doors 43 move in the lateral direction of the landing doorway 9 in conjunction with the movement of the pair of car doors 23. Thereby, the car doorway 7 and the landing doorway 9 are opened and closed.

Each car door 23 moves in the lateral direction of the car doorway 7 while maintaining the state in which the 1 st guide member 234, the 2 nd guide member 235, the door-side retaining member 26, and the additional retaining member 28 are inserted into the sill groove 25.

When each car door 23 moves in the closing direction, the door-side retaining member 26 moves in the sill groove 25 in a direction approaching the sill-side retaining member 27. When each car door 23 reaches the position to completely close the car doorway 7, a part of the door-side projection 262 of the door-side retaining member 26 is inserted into a space existing below the sill-side projection 272 of the sill-side retaining member 27.

When each car door 23 moves in the opening direction from the state where each car door 23 completely closes the car doorway 7, the door-side retaining member 26 moves in the direction away from the sill groove 25. Thereby, the door-side protruding portion 262 is separated from the space existing below the sill-side protruding portion 272.

When the user of the elevator enters the space in the car body 61, the car floor 62 receives downward load from the user. Thereby, the car floor 62 is lowered downward from the floor reference position with respect to the car body 61. At this time, the car sill 22 also sinks with the car floor 62 with respect to the car body 61.

When the car floor 62 descends downward from the floor reference position by the restriction distance E with respect to the car body 61, the car floor 62 reaches the floor lower limit position. At this time, the car sill 22 also sinks a limited distance E with respect to the car body 61. When the car floor 62 reaches the floor lower limit position, the stopper prevents the car floor 62 and the car sill 22 from being displaced downward relative to the car body 61.

Fig. 7 is an enlarged view showing the position of the car sill 22 with respect to the car door 23 when the car sill 22 of fig. 3 is lowered by the restricting distance E with respect to the car main body 61. In fig. 7, the positions of the car sill 22 and the sill-side protrusion 272 when the car sill 22 is submerged by the restricting distance E with respect to the car main body 61 are shown by two-dot chain lines.

When the car sill 22 is lowered relative to the car body 61 in a state where the car doors 23 completely close the car doorway 7, the sill-side retaining member 27 is displaced downward relative to the door-side retaining member 26. Thereby, the sill-side projection 272 is displaced in a direction approaching the door-side projection 262 from above. In this case, the sill-side protrusion 272 may be caught by the door-side protrusion 262 from above. When the sill-side projection 272 is engaged with the door-side projection 262, the car doors 23 are not easily moved when the car doors 23 open the car doorway 7.

However, since the allowable distance D between the sill-side projection 272 and the door-side projection 262 is larger than the limit distance E, the stopper prevents the car sill 22 from being displaced downward relative to the car body 61 until the sill-side projection 272 is caught by the door-side projection 262. As a result, even if the car sill 22 is lowered downward relative to the car body 61, the state in which the sill-side protruding portion 272 is separated from the door-side protruding portion 262 can be maintained, and the sill-side protruding portion 272 does not get caught on the door-side protruding portion 262.

On the other hand, for example, when the user of the elevator touches the car door 23 and applies an external force to the car door 23, the car door 23 may flex and raise the lower portion of the car door 23 with respect to the car sill 22. In this case, the 1 st guide 234 and the 2 nd guide 235 may be separated upward from the sill groove 25.

When the lower portion of the car door 23 is lifted up with respect to the car sill 22, the door-side retaining member 26 and the additional retaining member 28 are displaced upward with respect to the sill-side retaining member 27. Thus, the door-side protruding portion 262 is engaged with the sill-side protruding portion 272 from below in a state where the car doors 23 completely close the car doorway 7.

Fig. 8 is an enlarged view showing a state in which the door-side protrusion 262 of fig. 3 is caught by the sill-side protrusion 272 from below. In a state where the door-side protruding portion 262 is caught by the sill-side protruding portion 272 from below, the lower end portions of the 1 st guide member 234 and the 2 nd guide member 235 remain in the sill groove 25. Thereby, the 1 st guide member 234 and the 2 nd guide member 235 are prevented from being separated upward from the sill groove 25.

On the other hand, when the car door 23 is disengaged from the position where the car doorway 7 is completely closed, at least either one of the 1 st guide member 234 and the 2 nd guide member 235 may be disengaged upward from the sill groove 25 for some reason.

Fig. 9 is a sectional view showing a state in which the 1 st guide 234 of fig. 4 is separated upward from the sill groove 25. The position of the lower end portion of the door-side drop prevention member 26 is located at a lower position than the position of the lower end portion of the 1 st guide member 234. Accordingly, even if the 1 st guide member 234 is separated upward from the sill groove 25, the side surface of the door side drop preventing member 26 is caught by the groove 1 st side surface 251, whereby the 1 st guide member 234 is easily returned into the sill groove 25.

Further, the sum of the groove inclination dimension A1 and the 1 st guide inclination dimension B1 is larger than the 1 st offset distance C1. Therefore, in a state where the side surface of the door-side drop prevention member 26 is engaged with the groove 1 st side surface 251, at least a part of the 1 st guide 1 st lower inclined surface 234d overlaps with the groove 1 st upper inclined surface 254 when the car sill 22 is viewed from above. Accordingly, after the side surface of the door-side drop prevention member 26 is caught by the groove 1 st side surface 251, the 1 st guide member 234 contacts the car sill 22 at a position of at least one of the 1 st guide 1 st lower inclined surface 234d and the groove 1 st upper inclined surface 254.

Then, the 1 st guide member 234 moves in the sill groove 25 while being guided by either one of the 1 st upper inclined surface 254 and the 1 st guide 1 st lower inclined surface 234d by the self weight of the car door 23. Therefore, even if the 1 st guide member 234 is separated upward from the sill groove 25, the 1 st guide member 234 is more easily returned into the sill groove 25.

The position of the lower end of the additional retaining member 28 is lower than the position of the lower end of the 2 nd guide member 235. Thus, even if the 2 nd guide member 235 is separated upward from the sill groove 25, the additional retaining member 28 is caught by the groove 1 st side 251 of the sill groove 25, whereby the 2 nd guide member 235 is easily returned into the sill groove 25.

Further, the sum of the groove inclination dimension A1 and the 2 nd guide inclination dimension B2 is larger than the 2 nd offset distance C2. Therefore, even if the 2 nd guide member 235 is separated upward from the sill groove 25, the 2 nd guide member 235 is guided by either one of the groove 1 st upper inclined surface 254 and the 2 nd guide 1 st lower inclined surface 235d, whereby the 2 nd guide member 235 is more easily returned into the sill groove 25.

In this car door apparatus 20, the sill-side locking member 27 is fixed to the inside of the sill groove 25, and the door-side locking member 26 is fixed to the lower portion of the car door 23. Therefore, the sill-side stopper 27 can be fixed to the car sill 22 without making the shape of the car sill 22 a special shape. This makes it possible to easily manufacture the car sill 22 and to easily manufacture the car door apparatus 20.

Further, the sill-side fall prevention member 27 can be easily fixed to the existing car sill 22. Thus, the door drop prevention structure 24 can be easily applied to the existing car door apparatus 20.

In addition, in a state where the car door 23 completely closes the car doorway 7, a part of the door-side projection 262 in the door-side retaining member 26 is located at a position spaced downward from the sill-side projection 272 in the sill-side retaining member 27. Therefore, when the car door 23 is lifted up with respect to the car sill 22, the door-side projection 262 can be engaged with the sill-side projection 272 from below. This prevents the car door 23 from being further displaced upward relative to the car sill 22, and makes it possible to prevent the insertion portion 233 of the car door 23 from easily coming off upward from the sill groove 25. Therefore, the insertion portion 233 of the car door 23 can be more reliably prevented from being disengaged from the sill groove 25 regardless of the depth of the sill groove 25.

Further, a part of the door-side protruding portion 262 is separated downward from the sill-side protruding portion 272. Accordingly, the allowable distance D in the vertical direction can be ensured between the door-side projection 262 and the sill-side projection 272. Thus, even if the car sill 22 is lowered relative to the car body 61 so that the sill-side projection 272 approaches the door-side projection 262, the sill-side projection 272 does not catch on the door-side projection 262. Therefore, when the car door 23 opens the car doorway, the sill-side projection 272 and the door-side projection 262 can be prevented from interfering with the movement of the car door 23.

In a state where the car door 23 completely closes the car doorway 7, the position of the door-side hook 262b is closer to the sill-side fixing portion 271 than the position of the sill-side hook 272b. Therefore, even if the position of the door-side retaining member 26 is shifted in the opening direction with respect to the sill-side retaining member 27 in a state where the door-side projecting portion 262 is caught by the sill-side projecting portion 272, the door-side hook portion 262b can be caught by the sill-side hook portion 272b. This can more reliably maintain the state in which the door-side protruding portion 262 is engaged with the sill-side protruding portion 272, and can more reliably prevent the insertion portion 233 of the car door 23 from coming off the sill groove 25.

When the door-side retaining member 26 is viewed along the lateral width direction of the car doorway 7, the door-side retaining member 26 is located within the range of the 1 st shoe 237 in the width direction of the sill groove 25. Therefore, a space can be ensured between the side surface of the door-side escape prevention member 26 and the inner surface of the sill groove 25. This can prevent foreign matter from biting between the side surface of the door-side escape prevention member 26 and the inner surface of the sill groove 25. Further, it is also possible to suppress foreign matter from entering the gap between the side surface of the 1 st shoe 237 and the inner surface of the sill groove 25 from the space between the side surface of the door side drop prevention member 26 and the inner surface of the sill groove 25. Therefore, it is possible to suppress interference with movement of the car door 23 due to foreign matter biting between the door-side retaining member 26 and the 1 st shoe 237 and the inner surface of the sill groove 25.

The 1 st guide member 234 and the door-side drop prevention member 26 are fixed to the lower portion of the door main body 232 by a common fixing bolt 30. Therefore, it is not necessary to fix the 1 st guide member 234 and the door-side drop prevention member 26 to the door main body 232 by separate bolts, and an increase in the number of components can be suppressed. Further, by using the fixing bolt 30 provided to fix the 1 st guide member 234 to the door main body 232, the door-side drop preventing member 26 can be easily fixed to the door main body 232 provided.

The sill-side fixing portion 271 is detachable from the car sill 22. Therefore, the sill-side fall prevention member 27 can be easily fixed to the existing car sill 22. In addition, when the sill-side preventive member 27 is broken, the sill-side preventive member 27 can be easily replaced.

Further, the sectional shape of the sill-side preventive member 27 in a plane perpendicular to the width direction of the sill groove 25 is the same at any position in the width direction of the sill groove 25. Therefore, the sill-side stopper 27 can be formed by drawing, and the sill-side stopper 27 can be easily manufactured. Further, in the car sill 22, an aluminum drawn material obtained by drawing a raw material of aluminum is often used. Therefore, by conforming the shape of the sill-side stopper 27 to the shape used for the aluminum drawn material, the designability of the sill-side stopper 27 can be conformed to the designability of the car sill 22. This can improve the design of the car sill 22 to which the sill-side preventive members 27 are fixed. The material of each of the sill-side and stopper 27, 22 is not limited to aluminum.

The position of the lower end of the door-side drop prevention member 26 is lower than the position of the lower end of the 1 st guide member 234. Therefore, when the 1 st guide member 234 is separated upward from the sill groove 25, the lower end portion of the door-side drop prevention member 26 is also caught by the inner surface of the sill groove 25, and thus the 1 st guide member 234 can be easily returned into the sill groove 25.

Further, the sum of the groove inclination dimension A1 and the 1 st guide inclination dimension B1 is larger than the 1 st offset distance C1. Therefore, when the lower end portion of the door-side drop prevention member 26 is caught by the groove 1 st side surface 251, the 1 st guide member 234 can be brought into contact with the car sill 22 at a position where at least one of the 1 st guide 1 st lower inclined surface 234d and the groove 1 st upper inclined surface 254 is formed. Thus, the 1 st guide member 234 can be more easily returned into the sill groove 25 by guiding the 1 st guide member 234 by either one of the 1 st upper inclined surface 254 and the 1 st guide 1 st lower inclined surface 234 d.

The position of the lower end of the additional retaining member 28 is lower than the position of the lower end of the 2 nd guide member 235. Therefore, when the 2 nd guide member 235 is separated upward from the sill groove 25, the lower end portion of the additional retaining member 28 is also caught by the inner surface of the sill groove 25, whereby the 2 nd guide member 235 can be easily returned into the sill groove 25.

Further, the sum of the groove inclination dimension A1 and the 2 nd guide inclination dimension B2 is larger than the 2 nd offset distance C2. Therefore, when the lower end portion of the additional retaining member 28 is engaged with the groove 1 st side surface 251, the 2 nd guide member 235 can be brought into contact with the car sill 22 at a position where at least one of the 2 nd guide 1 st lower inclined surface 235d and the groove 1 st upper inclined surface 254 is formed. Thus, the 2 nd guide member 235 can be more easily returned into the sill groove 25 by guiding the 2 nd guide member 235 by either one of the 1 st upper inclined surface 254 and the 2 nd guide 1 st lower inclined surface 235d of the groove.

When the additional retaining member 28 is viewed in the lateral direction of the car doorway 7, the additional retaining member 28 is located within the range of the 2 nd shoe 239 in the width direction of the sill groove 25. Therefore, a space can be ensured between the side surface of the additional retaining member 28 and the inner surface of the sill groove 25. This can prevent foreign matter from biting between the side surface of the additional retaining member 28 and the inner surface of the sill groove 25. Further, it is possible to suppress foreign matter from entering the gap between the side surface of the 2 nd shoe 239 and the inner surface of the sill groove 25 from the space between the side surface of the additional anti-slip member 28 and the inner surface of the sill groove 25. Therefore, the movement of the car door 23 can be prevented from being hindered by the foreign matter being caught between the additional retaining member 28 and the inner surface of the sill groove 25 and the second shoe 239.

The 2 nd guide member 235 and the additional retaining member 28 are fixed to the lower portion of the door main body 232 by a common fixing bolt 31. Therefore, it is not necessary to fix the 2 nd guide member 235 and the additional retaining member 28 to the door main body 232 with separate bolts, and an increase in the number of components can be suppressed. Further, by using the fixing bolt 31 provided to fix the 2 nd guide member 235 to the door main body 232, the additional anti-slip member 28 can be easily fixed to the door main body 232 provided.

The additional retaining member 28 has the same shape as the door-side retaining member 26. Therefore, the additional retaining member 28 and the door-side retaining member 26 can be manufactured by the same manufacturing apparatus, and the door retaining structure 24 can be manufactured easily.

In the above embodiment, the sill-side projection 272 has the sill-side hook 272b, and the door-side projection 262 has the door-side hook 262b. However, the sill-side hook 272b may not be provided. Further, the door-side hook 262b may not be provided.

In the above embodiment, the sill-side protrusion 272 protrudes in the opening direction from the upper end of the sill-side fixing portion 271. However, the sill-side protrusion 272 may not protrude from the upper end of the sill-side fixing portion 271 as long as the door-side protrusion 262 can be inserted to a position spaced downward from the sill-side protrusion 272.

In the above embodiment, the door-side projecting portion 262 projects from the lower end portion of the lower projecting portion 261b in the closing direction. However, the door-side protruding portion 262 may not protrude from the lower end portion of the lower protruding portion 261b as long as the door-side protruding portion 262 can be inserted to a position separated downward from the sill-side protruding portion 272.

In the above embodiment, in a state where the car door 23 completely closes the car doorway 7, a part of the door-side projection 262 is located at a position separated downward from the sill-side projection 272. However, in a state where the car door 23 completely closes the car doorway 7, all of the door-side protruding portions 262 may be located at positions separated downward from the sill-side protruding portions 272.

In the above embodiment, the 1 st guide member 234 and the door-side drop prevention member 26 are fixed to the lower portion of the door main body 232 by the common fixing bolt 30. However, the fastener for fixing the 1 st guide member 234 to the lower portion of the door main body 232 and the fastener for fixing the door-side drop-off preventing member 26 to the lower portion of the door main body 232 may be different fasteners.

In the above embodiment, a part of the door-side drop prevention member 26 overlaps the 1 st guide member 234. However, the door-side retaining member 26 may be disposed at a position apart from the 1 st guide member 234 in the lateral direction of the car doorway 7.

In the above embodiment, the sill-side drop preventing member 27 is fixed to the inside of the sill groove 25 by the fixing bolt 29 passing through the bolt passing hole 221 from the groove bottom surface 253 to the lower surface of the car sill 22. However, for example, the sill-side fall prevention member 27 may be fixed to the inside of the sill groove 25 by a fastener passing through a bolt passing hole extending from the groove 1 st side 251 to the side of the car sill 22.

In the above embodiment, the position of the lower end portion of the door-side drop prevention member 26 is lower than the position of the lower end portion of the 1 st guide member 234. But is not limited thereto. For example, the lower end portion of the door-side drop prevention member 26 may be positioned higher than the lower end portion of the 1 st guide member 234. The position of the lower end portion of the door-side drop prevention member 26 may be the same height as the position of the lower end portion of the 1 st guide member 234.

In the above embodiment, the additional retaining member 28 has the same shape as the door-side retaining member 26. However, the shape of the additional retaining member 28 may be different from the shape of the door-side retaining member 26. Therefore, the additional protruding portion 282 may not be provided.

In the above embodiment, the 2 nd guide member 235 and the additional retaining member 28 are fixed to the lower portion of the door main body 232 by the common fixing bolt 31. However, the fastener for fixing the 2 nd guide member 235 to the lower portion of the door main body 232 and the fastener for fixing the additional retaining member 28 to the lower portion of the door main body 232 may be different fasteners.

In the above embodiment, a part of the additional retaining member 28 overlaps the 2 nd guide member 235. However, the additional retaining member 28 may be disposed at a position apart from the 2 nd guide member 235 in the lateral direction of the car doorway 7.

In the above embodiment, the additional retaining member 28 is fixed to the lower portion of the door main body 232. However, the additional retaining member 28 may not be provided.

In the above embodiment, the door drop preventing structure 24 is applied to the center-opening type car door apparatus 20. However, the door drop prevention structure 24 may be applied to a single-open type car door apparatus that opens and closes the car doorway 7 by moving the plurality of car doors 23 in the same direction.

In the above embodiment, the door drop prevention structure 24 is applied to the car door apparatus 20. However, the door release preventing structure 24 may be applied to the landing door apparatus 40. In this case, the door-side retaining member 26 and the additional retaining member 28 are fixed to the landing door 43, and the sill-side retaining member 27 is fixed to the sill groove of the landing sill 42. In this case, the landing sill 42 does not sink relative to the landing door 43, and therefore, the allowable distance D between the sill-side projection 272 and the door-side projection 262 can be reduced as compared with the case where the door-disengagement preventing structure 24 is applied to the car door apparatus 20. In this case, the door release preventing structure 24 may be applied to a single-open landing door device with respect to the landing door device 40.

Description of the reference numerals

7: a car doorway (elevator doorway); 9: landing doorway (elevator doorway); 20: car door devices (door devices of elevators); 22: car sill (sill); 23: car doors (doors); 24: a door anti-falling structure part; 25: a sill groove; 26: a door side anti-drop component; 27: a sill-side drop-preventing member; 28: adding an anti-falling component; 30: a fixing bolt (fastener); 31: a fixing bolt (fastener); 40: landing door device (door device of elevator); 42: landing sill (sill); 43: landing doors (gates); 223: the upper surface of the sill 1 (upper surface of the sill); 232: a door main body; 233: an insertion section; 234: a 1 st guide member; 234a: 1 st guide 1 st side; 234c: a 1 st guiding lower surface; 234d: 1 st guide 1 st lower inclined surface; 235: a 2 nd guide member; 235a: the 2 nd guiding 1 st side; 235c: a 2 nd guide lower surface; 235d: 2 nd guide 1 st lower inclined surface; 237: boot 1; 239: boot 2; 251: groove 1 st side; 252: groove 2 nd side; 254: a groove 1 upper inclined surface; 261: a door side fixing part; 262: a door side protrusion; 262a: a door side arm portion; 262b: a door side hook portion; 271: a sill side fixing part; 272: a sill side protrusion; 272a: a sill side arm; 272b: a sill side hook.

Claims (13)

1. A door device of an elevator, wherein the door device of an elevator has:

a sill provided at a lower portion of an elevator doorway, the sill having a sill groove provided along a lateral width direction of the elevator doorway;

a door that moves in a lateral direction of the elevator entrance to open and close the elevator entrance; and

a door anti-falling structure part,

the door has a door body and an insertion portion provided at a lower portion of the door body,

the insertion part has a 1 st guide member inserted into the sill groove,

the door drop-proof structure part is provided with a sill side drop-proof component and a door side drop-proof component,

the sill-side preventive member has a sill-side fixed portion fixed in the sill groove and a sill-side protruding portion protruding from the sill-side fixed portion in an opening direction, which is a moving direction of the door when the door opens the elevator entrance,

the door-side anti-drop member has a door-side fixing portion fixed to a lower portion of the door main body and a door-side protruding portion protruding from the door-side fixing portion in a closing direction, which is a moving direction of the door when the door closes the elevator entrance,

In a state where the door completely closes the elevator entrance, at least a part of the door-side protruding portion is located in the sill at a position spaced downward from the sill-side protruding portion.

2. The door device of an elevator according to claim 1, wherein,

the sill-side protrusion has a sill-side arm portion protruding from the sill-side fixing portion in the opening direction and a sill-side hook portion protruding downward from the sill-side arm portion,

the door-side protruding portion has a door-side arm portion protruding from the door-side fixing portion in the closing direction and a door-side hook portion protruding upward from the door-side arm portion,

in a state where the door completely closes the elevator entrance, the position of the door-side hook portion is closer to the sill-side fixed portion than the position of the sill-side hook portion.

3. The door arrangement of an elevator according to claim 1 or 2, wherein,

the 1 st guide member has a 1 st shoe positioned in the sill groove,

the 1 st shoe has a larger dimension in the width direction of the sill groove than the door side drop prevention member,

when the door-side drop prevention member is viewed along the lateral width direction of the elevator doorway, the door-side drop prevention member is located within the range of the 1 st shoe in the width direction of the sill groove.

4. The door device of an elevator according to any one of claims 1 to 3, wherein,

the 1 st guide member and the door side escape prevention member are fixed to a lower portion of the door main body by a common fastener.

5. The door device of an elevator according to any one of claims 1 to 4, wherein,

the sill-side fixing portion is detachable from the sill.

6. The door device of an elevator according to any one of claims 1 to 5, wherein,

the sectional shape of the sill-side drop preventing member in a plane perpendicular to the width direction of the sill groove is the same at any position in the width direction of the sill groove.

7. The door device of an elevator according to any one of claims 1 to 6, wherein,

the lower end portion of the door-side drop-off preventing member is positioned lower than the lower end portion of the 1 st guide member.

8. The door apparatus of an elevator as claimed in claim 7, wherein,

the inner surface of the sill groove has a groove 1 st side and a groove 2 nd side which are opposite to each other in the width direction of the sill groove,

the outer surface of the 1 st guide member has a 1 st guide 1 st side surface facing the 1 st side surface of the groove and a 1 st guide lower surface facing downward,

A groove 1 upper inclined surface which is inclined downward from the upper surface of the sill toward the groove 1 side surface is formed between the upper surface of the sill and the groove 1 side surface,

a 1 st guide 1 st lower inclined surface which is formed between the 1 st guide 1 st side surface and the 1 st guide lower surface and is inclined upward from the 1 st guide lower surface toward the 1 st guide 1 st side surface,

the sum of the dimensions of the groove 1 st upper inclined surface and the 1 st guide 1 st lower inclined surface in the width direction of the sill groove is larger than the distance between the door side drop prevention member and the 1 st guide 1 st side surface in the width direction of the sill groove.

9. The door arrangement of an elevator according to any one of claims 1-8, wherein,

the door device of the elevator is provided with an additional anti-falling component fixed at the lower part of the door,

the insertion part has a 2 nd guide member inserted into the sill groove,

the position of the 2 nd guide member is away from the position of the 1 st guide member in the opening direction,

the position of the additional anti-drop component is separated from the position of the door-side anti-drop component towards the opening direction,

the additional anti-drop component is inserted into the sill groove,

The position of the lower end of the additional retaining member is lower than the position of the lower end of the 2 nd guide member.

10. The door apparatus of an elevator as claimed in claim 9, wherein,

the inner surface of the sill groove has a groove 1 st side and a groove 2 nd side which are opposite to each other in the width direction of the sill groove,

the outer surface of the 2 nd guide member has a 2 nd guide 1 st side surface facing the 1 st side surface of the groove and a 2 nd guide lower surface facing downward,

a groove 1 upper inclined surface which is inclined downward from the upper surface of the sill toward the groove 1 side surface is formed between the upper surface of the sill and the groove 1 side surface,

a 2 nd guide 1 st lower inclined surface which is formed between the 2 nd guide 1 st side surface and the 2 nd guide lower surface and is inclined upward from the 2 nd guide lower surface toward the 2 nd guide 1 st side surface,

the sum of the dimensions of the groove 1 st upper inclined surface and the groove 2 nd guide 1 st lower inclined surface in the width direction of the sill groove is larger than the distance between the additional anti-drop member and the 2 nd guide 1 st side surface in the width direction of the sill groove.

11. The door arrangement of an elevator according to claim 9 or 10, wherein,

The 2 nd guide member has a 2 nd shoe positioned in the sill groove,

the size of the second shoe 2 in the width direction of the sill groove is larger than the size of the additional anti-drop member in the width direction of the sill groove,

when the additional anti-drop member is viewed along the transverse width direction of the elevator entrance, the additional anti-drop member is positioned within the range of the 2 nd shoe in the width direction of the sill groove.

12. The door arrangement of an elevator according to any one of claims 9-11, wherein,

the 2 nd guide member and the additional drop-preventing member are fixed to a lower portion of the door main body by a common fastener.

13. The door arrangement of an elevator according to any one of claims 9-12, wherein,

the shape of the additional anti-drop component is the same as the shape of the door-side anti-drop component.