WO2022269688A1 - Elevator door device - Google Patents

Abstract

An elevator door device, wherein a sill-side dislodging prevention member has: a sill-side fixing portion that is fixed in a sill groove; and a sill-side protruding portion that protrudes from the sill-side fixing portion in the opening direction, which is the direction of movement of a door when the door opens an elevator doorway. A door-side dislodging prevention member has: a door-side fixing portion that is fixed to the lower portion of the door body; and a door-side protruding portion that protrudes from the door-side fixing portion in the closing direction, which is the direction of movement of the door when the door closes the elevator doorway. When the elevator doorway is fully closed by the door, at least a portion of the door-side protruding portion is located in the sill groove at a position separated downward from the sill-side protruding portion.

Description

elevator door device

The present disclosure relates to an elevator door device that opens and closes an elevator doorway.

　In conventional elevator door devices, a guide shoe is attached to the lower end of the sliding door that opens and closes the elevator doorway. A guide groove is provided in the threshold of the elevator doorway. The guide shoe is inserted into the guide groove. In the conventional elevator door apparatus, when the sliding door receives an external force, the sliding door is bent and the guide shoe may come off the guide groove.

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

JP 2010-208745 A

However, in the conventional elevator door device shown in Patent Document 1, it is necessary to manufacture a special threshold in which a step is formed on the side surface of the guide groove. Therefore, it takes time and effort to manufacture the threshold, and thus to manufacture the elevator door device.

The present disclosure has been made to solve the above problems, and aims to obtain an elevator door device that can be manufactured easily.

An elevator door apparatus according to the present disclosure is provided at the lower part of an elevator doorway. A threshold groove is provided along the frontage direction of the elevator doorway. The door includes a door for opening and closing the entrance, and a door detachment prevention structure. The door has a door body and an insertion part provided at the bottom of the door body, and the insertion part is inserted into the sill groove. The door detachment prevention structure includes a sill-side detachment prevention member and a door-side detachment prevention member, and the sill-side detachment prevention member is fixed in the sill groove. The door has a sill-side fixed portion and a sill-side protruding portion that protrudes from the sill-side fixed portion in the opening direction, which is the moving direction of the door when the door opens the elevator doorway. The door has a door-side fixed part fixed to the lower part of the main body, and a door-side projecting part projecting from the door-side fixed part in the closing direction, which is the movement direction of the door when the door closes the elevator doorway. fully closes the elevator doorway, at least a portion of the door-side protrusion is positioned downwardly away from the threshold-side protrusion in the sill groove.

According to the elevator door device according to the present disclosure, manufacturing of the elevator door device can be facilitated.

1 is an upper side view showing an elevator according to Embodiment 1; FIG. FIG. 2 is a front view showing the car door device of FIG. 1; 3 is an enlarged view showing part III of FIG. 2; FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3; FIG. FIG. 3 is an enlarged view showing a V portion of FIG. 2; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5; FIG. 4 is an enlarged view showing the position of the car sill with respect to the car door when the car sill of FIG. 3 sinks with respect to the car body by a restricted distance E; FIG. 4 is an enlarged view showing a state in which the door-side projecting portion of FIG. 3 is engaged with the threshold-side projecting portion from below; FIG. 5 is a cross-sectional view showing a state in which the first guide member of FIG. 4 is disengaged upward from the threshold groove;

Embodiments will be described below with reference to the drawings.
Embodiment 1.
1 is an upper side view showing an elevator according to Embodiment 1. FIG. In the figure, a machine room 2 is provided above the hoistway 1 . A hoist 3 as a driving device is installed in the machine room 2 . The hoist 3 has a traction sheave 4 . The drive sheave 4 is rotated by the driving force of the hoist 3 .

A plurality of suspended bodies 5 are wound around the drive sheave 4 . A rope or belt is used as the suspension 5 . A car 6 and a counterweight (not shown) are suspended in the hoistway 1 by a plurality of suspension bodies 5 . The car 6 and the counterweight move vertically in the hoistway 1 as the drive sheave 4 rotates.

The car 6 is provided with a car doorway 7 as an elevator doorway. Further, the car 6 is provided with a car door device 20 as an elevator door device. The car door device 20 is provided with a door driving device (not shown). The car door device 20 opens and closes the car doorway 7 by the driving force of the door driving device.

The landing 8 on each floor is provided with a landing doorway 9 as an elevator doorway. On each floor, the space in the hoistway 1 is opened to the landing 8 through the landing doorway 9. - 特許庁When the car 6 is stopped at any floor, the car doorway 7 faces the landing doorway 9 provided at the floor where the car 6 is stopped.

A hall door device 40 as an elevator door device is provided on each floor. The landing door device 40 opens and closes the landing doorway 9 . At the floor where the car 6 is stopped, the car door device 20 and the hall door device 40 face each other. As a result, the hall door device 40 is interlocked with the car door device 20 . On the floor where the car 6 is stopped, the landing doorway 9 is opened and closed by opening and closing the car doorway 7 .

The car 6 has a car body 61 and a car floor 62 . The car doorway 7 is provided in the car main body 61 . A car interior space is formed in the car main body 61 .

On the floor where the car 6 is stopped, elevator users can enter the space inside the car body 61 from the landing 8 through the landing doorway 9 and the car doorway 7 . Further, on the floor where the car 6 is stopped, the elevator user can get off to the landing 8 from the space inside the car body 61 through the car doorway 7 and the landing doorway 9 .

The car 6 is provided with a vibration isolator (not shown) and a stopper member (not shown). The car floor 62 is supported below the car main body 61 via an anti-vibration device. When a user who has entered the car interior space of the car main body 61 sits 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 applied to the car floor 62 .

The position of the car floor 62 with respect to the car body 61 is the floor reference position when the car floor 62 is not receiving any load. When the car floor 62 receives a downward load, the car floor 62 sinks 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 member limits the sinking amount of the car floor 62 with respect to the car main body 61 . When the car floor 62 is displaced downward from the floor reference position with respect to the car body 61 by the restricted 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 downward displacement of the car floor 62 with respect to the car main body 61 is prevented by the stopper member. That is, in the car 6, the car floor 62 is prevented from sinking downward with respect to the car main body 61 beyond the floor lower limit position.

FIG. 2 is a front view showing the car door device 20 of FIG. FIG. 2 shows the car door device 20 as seen from the landing 8 side. The car door device 20 has a car door support member 21 , a car threshold 22 , a pair of car doors 23 , and a pair of door detachment prevention structures 24 .

The car door support member 21 is arranged above the car doorway 7 . Further, the car door support member 21 is fixed to the car 6 . The car door support member 21 has a car hanger case 211 and a car door rail 212 .

The car hanger case 211 is fixed to the car main body 61 . The car door rail 212 is fixed to the car hanger case 211 . The car door rail 212 is arranged along the frontage direction of the car doorway 7 . That is, the car door rail 212 is arranged along the left-right direction in FIG.

The car sill 22 is a sill fixed to the car floor 62 . The car threshold 22 is provided below the car doorway 7 . Further, the car sill 22 is arranged along the frontage direction of the car doorway 7 . The car sill 22 is provided with a sill groove 25 along the frontage direction of the car doorway 7.例文帳に追加The threshold groove 25 is open upward.

A pair of car doors 23 are hung on car door rails 212 . Further, the pair of car doors 23 are movable along the frontage direction of the car doorway 7 by being guided by the car door rails 212 .

The car hanger case 211 is provided with a car door interlocking mechanism (not shown). The car door interlocking mechanism part 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 frontage direction of the car doorway 7 .

A door drive device is also provided in the car hanger case 211 . The door driving device generates 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. The car doorway 7 is opened and closed by moving the pair of car doors 23 in opposite directions by the driving force of the door driving device.

A car door fully closed reference line P is set at the car doorway 7 . The car door fully closed reference line P is a vertical line passing through the center of the car doorway 7 in the frontage direction. The pair of car doors 23 opens the car doorway 7 by moving away from the car door fully closed reference line P. Further, the pair of car doors 23 closes the car doorway 7 by moving in a direction approaching the car door fully closed reference line P. That is, in the present embodiment, the car door device 20 is a central opening type door device.

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

The door hanger 231 is hung on the car door rail 212 . The door hanger 231 is fixed to the upper end of the door body 232 .

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

The insertion portion 233 is provided below the door body 232 . Further, the insertion portion 233 is inserted into the sill groove 25 of the car sill 22 .

The insertion portion 233 has a first guide member 234 and a second guide member 235 . Each of the first guide member 234 and the second guide member 235 is provided below the door body 232 .

Here, the moving direction of the car door 23 when the car door 23 closes the car doorway 7 is defined as the closing direction. Further, the moving direction of the car door 23 when the car door 23 opens the car doorway 7 is defined as the opening direction. In this case, the position of the second guide member 235 is separated from the position of the first guide member 234 in the opening direction.

Further, among both ends of the door body 232 in the frontage direction of the car doorway 7, the end on the side closer to the car door fully closed reference line P is defined as the door closing side end, and the end on the side farther from the car door fully closed reference line P Let the end be the door opening side end. In this case, the first guide member 234 is provided at the lower end of the door body 232 on the door closing side. Also, the second guide member 235 is provided at the lower portion of the door main body 232 on the door opening side.

Each of the first guide member 234 and the second guide member 235 is inserted into the threshold groove 25 of the car threshold 22 . Each car door 23 moves along the frontage direction of the car doorway 7 while maintaining the state where the first guide member 234 and the second guide member 235 are inserted into the threshold groove 25 .

Of the pair of door detachment prevention structure portions 24, one door detachment prevention structure portion 24 corresponds to one car door 23, and the other door detachment prevention structure portion 24 corresponds to the other car door 23. . Each of the pair of door detachment prevention structure portions 24 makes it difficult for the insertion portion 233 of the corresponding car door 23 to detach from the threshold groove 25 . Each door detachment prevention structure 24 has a door side detachment prevention member 26 , a threshold side detachment prevention member 27 , and an additional detachment prevention member 28 .

The sill-side detachment prevention member 27 is a separate member from the car sill 22 . The sill-side detachment prevention member 27 is fixed in the sill groove 25 . The sill-side detachment prevention member 27 is arranged at a position away in the closing direction from the position of the first guide member 234 when the car door 23 fully closes the car doorway 7 .

The threshold side detachment prevention members 27 in the pair of door detachment prevention structures 24 are arranged at symmetrical positions with respect to the car door fully closed reference line P. In this embodiment, the sill-side detachment prevention members 27 of the pair of door detachment prevention structures 24 are connected to each other and integrated.

The door side detachment prevention member 26 and additional detachment prevention member 28 are fixed to the lower part of the car door 23 . Further, the door-side detachment prevention member 26 and the additional detachment prevention member 28 are inserted into the threshold groove 25 . The position of the additional detachment prevention member 28 is separated from the position of the door side detachment prevention member 26 in the opening direction. In this embodiment, the door-side detachment prevention member 26 is fixed to the lower part of the door body 232 at the door closing side end. Further, in the present embodiment, the additional detachment prevention member 28 is fixed to the lower part of the door main body 232 at the door opening side end.

The door side detachment prevention member 26 and additional detachment prevention member 28 move toward the threshold side detachment prevention member 27 as the car door 23 moves in the closing direction. Further, the door side detachment prevention member 26 and the additional detachment prevention member 28 move away from the threshold side detachment prevention member 27 as the car door 23 moves in the opening direction.

FIG. 3 is an enlarged view showing part III of FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3. FIG. The first guide member 234 has a first mounting plate 236 and a first shoe 237 .

The first mounting plate 236 is fixed to the surface of the door body 232 on the landing 8 side. Also, the first mounting plate 236 protrudes into the threshold groove 25 from the lower portion of the door body 232 . Here, the width direction of the sill groove 25 is defined as a horizontal direction perpendicular to the longitudinal direction of the sill groove 25 . In this case, the first mounting plate 236 is fixed to the lower portion of the door body 232 with the thickness direction of the first mounting plate 236 aligned with the width direction of the threshold groove 25 .

The first shoe 237 is fixed to the lower end of the first mounting plate 236. Also, the first shoe 237 is positioned within the threshold groove 25 . The dimension of the first shoe 237 in the width direction of the threshold groove 25 is larger than the dimension of the first mounting plate 236 in the width direction of the threshold groove 25, as shown in FIG. When the door-side detachment-preventing member 26 is viewed along the frontage direction of the car doorway 7 , the door-side detachment-preventing member 26 is positioned within the range of the first shoe 237 in the width direction of the threshold groove 25 .

The inner surface of the threshold groove 25 has a groove first side surface 251, a groove second side surface 252, and a groove bottom surface 253, as shown in FIG. The groove first side surface 251 and the groove second side surface 252 face each other in the width direction of the threshold groove 25 . The position of the groove second side surface 252 is closer to the car floor 62 than the position of the groove first side surface 251 . The groove bottom surface 253 is the bottom surface of the threshold groove 25 . That is, the groove bottom surface 253 is a surface that connects the lower end portions of the groove first side surface 251 and the groove second side surface 252 .

The upper surface of the car sill 22 has a sill first upper surface 223 adjacent to the groove first side surface 251 and a threshold second upper surface 224 adjacent to the groove second side surface 252 . The second sill upper surface 224 is closer to the car floor 62 than the first sill upper surface 223 is.

A groove first upper inclined surface 254 is formed between the threshold first upper surface 223 and the groove first side surface 251 . The groove first upper inclined surface 254 is an inclined surface that slopes downward from the threshold first upper surface 223 toward the groove first side surface 251 . As a result, the groove first upper inclined surface 254 is inclined downward toward the inside of the threshold groove 25 from the threshold first upper surface 223 .

A groove second upper inclined surface 255 is formed between the threshold second upper surface 224 and the groove second side surface 252 . The groove second upper inclined surface 255 is an inclined surface that slopes downward from the threshold second upper surface 224 toward the groove second side surface 252 . Thereby, the groove second upper inclined surface 255 is inclined downward toward the inside of the threshold groove 25 from the threshold second upper surface 224 .

The outer surface of the first shoe 237 includes a first guide first side surface 234a, a first guide second side surface 234b, a first guide lower surface 234c, a first guide first lower inclined surface 234d, and a first guide second lower surface. and an inclined surface 234e.

The first guide first side surface 234 a faces the groove first side surface 251 . The first guide second side surface 234 b faces the groove second side surface 252 . As a result, the first guide first side surface 234a and the first guide second side surface 234b face opposite sides in the width direction of the threshold groove 25 . When the door-side detachment prevention member 26 is viewed along the frontage direction of the car doorway 7, the door-side detachment prevention member 26 is positioned between the first guide first side surface 234a and the first guide second side surface 234b. .

The first guide lower surface 234c is the lower surface of the first shoe 237. The first guide lower surface 234 c faces the groove bottom surface 253 . Thereby, the first guide lower surface 234c faces downward. When viewed from above, the first guide lower surface 234c is positioned between the first guide first side surface 234a and the first guide second side surface 234b.

The first guide first lower inclined surface 234d is formed between the first guide first side surface 234a and the first guide lower surface 234c. The first guide first lower inclined surface 234d is an inclined surface that slopes upward from the first guide lower surface 234c toward the first guide first side surface 234a. As a result, the first guiding first lower inclined surface 234d is inclined downward toward the inner side of the first shoe 237 in the width direction of the threshold groove 25 from the lower end of the first guiding first side surface 234a.

The first guide second lower inclined surface 234e is formed between the first guide second side surface 234b and the first guide lower surface 234c. The first guide second lower inclined surface 234e is an inclined surface that slopes upward from the first guide lower surface 234c toward the first guide second side surface 234b. As a result, the first guide second lower inclined surface 234e is inclined downward toward the inner side of the first shoe 237 in the width direction of the threshold groove 25 from the lower end of the first guide second side surface 234b.

Here, the dimension of the groove first upper inclined surface 254 in the width direction of the threshold groove 25 is defined as a groove inclination dimension A1. Also, the dimension of the first guide first lower inclined surface 234d in the width direction of the threshold groove 25 is defined as a first guide inclination dimension B1. Further, the distance from the first guide side surface 234a to the door-side detachment prevention member 26 in the width direction of the threshold groove 25 is defined as a first offset distance C1. In this case, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is larger than the first offset distance C1. That is, the relationship of A1+B1>C1 is established. Further, in the present embodiment, the first offset distance C1 is larger than the first guide tilt dimension B1. That is, the relationship of C1>B1 is established.

The upper surface of the sill-side detachment prevention member 27 is located at the same height as the upper surface of the car sill 22, as shown in FIG. The cross-sectional shape of the sill-side detachment prevention member 27 on a plane orthogonal 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 detachment prevention member 27 has a sill-side fixing portion 271 and a sill-side projecting portion 272 .

The sill-side fixing part 271 is fixed inside the sill groove 25 . In the pair of door detachment prevention structure portions 24, the sill side fixing portions 271 of the respective sill side detachment prevention members 27 are connected to each other. A fixing surface 271 a that overlaps the groove bottom surface 253 is formed on each of the threshold-side fixing portions 271 that are integrally connected to each other. A screw hole is provided in the fixing surface 271a.

The car sill 22 is provided with bolt through holes 221 and a plurality of discharge holes 222 . The bolt through hole 221 and each discharge hole 222 are through holes that reach from the bottom surface 253 of the groove to the lower surface of the car sill 22 .

A fixing bolt 29 as a fastener is passed through the bolt through hole 221 . Each discharge hole 222 is a through hole for discharging foreign objects in the threshold groove 25 to the lower side of the car threshold 22 . The discharge hole 222 is provided at least at a position below each of the door-side detachment prevention member 26 and the additional detachment prevention member 28 when the car door 23 fully closes the car doorway 7 .

A fixing bolt 29 passed through the bolt through hole 221 is screwed into the screw hole provided in the fixing surface 271a. The sill-side fixing portions 271 that are connected to each other and integrated are fixed to the groove bottom surface 253 by fixing bolts 29 passed through the bolt through holes 221 . As a result, each threshold-side fixing portion 271 is detachable from the groove bottom surface 253 . Therefore, each sill-side detachment prevention member 27 is detachable from the car sill 22 .

The sill-side protruding part 272 protrudes from the sill-side fixing part 271 in the opening direction. In this embodiment, the sill-side projecting portion 272 protrudes in the opening direction from the upper end portion of the sill-side fixing portion 271 . As a result, the threshold-side projecting portion 272 is held at a position spaced upward from the groove bottom surface 253 .

The threshold-side projecting portion 272 has a threshold-side arm portion 272a and a threshold-side hook portion 272b. The threshold-side arm portion 272a protrudes from the threshold-side fixing portion 271 in the opening direction. The threshold-side hook portion 272b protrudes downward from the threshold-side arm portion 272a. In the present embodiment, a threshold-side hook portion 272b is provided at an end portion of the threshold-side arm portion 272a that is farther from the threshold-side fixing portion 271 .

The door-side detachment prevention member 26 is a plate-shaped member perpendicular to the width direction of the threshold groove 25 . The cross-sectional shape of the door-side detachment prevention member 26 on a plane orthogonal to the width direction of the threshold groove 25 is the same at any position in the width direction of the threshold groove 25 .

The first guide member 234 and the door-side detachment prevention member 26 are fixed to the lower portion of the door body 232 by a plurality of fixing bolts 30. Each fixing bolt 30 is a common fastener that fixes the first guide member 234 and the door-side detachment prevention member 26 to the lower portion of the door body 232 . In this embodiment, the first guide member 234 and the door-side detachment prevention member 26 are fastened together to the lower portion of the door body 232 by two fixing bolts 30 .

The door-side detachment prevention member 26 has a door-side fixing portion 261 and a door-side projecting portion 262 .

The door-side fixing portion 261 has a fixing body portion 261a and a downward projecting portion 261b. A plurality of elongated holes 263 are provided in the fixed body portion 261a. The plurality of long holes 263 are provided at positions separated from each other in the frontage direction of the car doorway 7 . Each elongated hole 263 is a vertically elongated hole. In this embodiment, two elongated holes 263 are provided in the fixed body portion 261a.

A portion of the fixed body portion 261 a overlaps the first mounting plate 236 of the first guide member 234 . Each fixing bolt 30 is passed through each elongated hole 263 . The fixing bolt 30 passed through the elongated hole 263 passes through the first mounting plate 236 and is screwed into the lower portion of the door body 232 . As a result, the first guide member 234 and the door-side detachment prevention member 26 are fixed to the lower portion of the door body 232 . The position of the door side detachment prevention member 26 with respect to the door body 232 can be adjusted in the vertical direction by loosening the tightening of each fixing bolt 30 .

The downward projecting portion 261b projects downward from the fixed body portion 261a. In addition, the downward projecting portion 261 b is arranged at a position shifted in the closing direction from the first shoe 237 , that is, at a position closer to the threshold-side detachment prevention member 27 than the first shoe 237 . As a result, the door-side detachment prevention member 26 is fixed to the lower portion of the door body 232 while avoiding the first shoe 237 .

The downward 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 first shoe 237. As a result, the position of the lower end of the door-side detachment prevention member 26 is lower than the position of the lower end of the first guide member 234 .

The door-side protruding portion 262 protrudes from the downward protruding portion 261b of the door-side fixing portion 261 in the closing direction. In this embodiment, the door-side projecting portion 262 projects in the closing direction from the lower end portion of the downward projecting portion 261b. As a result, the door-side projecting portion 262 is held at a position lower than the threshold-side projecting portion 272 and the first shoe 237 .

The door-side projecting portion 262 has a door-side arm portion 262a and a door-side hook portion 262b. The door-side arm portion 262a protrudes in the closing direction from the downward protruding portion 261b. The door-side hook portion 262b protrudes upward from the door-side arm portion 262a. In the present embodiment, a door-side hook portion 262b is provided at an end portion of the door-side arm portion 262a that is farther from the door-side fixing portion 261. As shown in FIG.

When the car door 23 fully closes the car doorway 7, the door-side fixing part 261 is positioned farther in the opening direction than the sill-side detachment prevention member 27. Further, when the car door 23 fully closes the car doorway 7 , a part of the door-side projecting portion 262 is positioned downwardly away from the threshold-side projecting portion 272 in the threshold groove 25 . As a result, when the car door 23 fully closes the car doorway 7, the door-side protrusion 26 and the sill-side protrusion 27 are seen from above. 262 are partially overlapped. Further, when the car door 23 fully closes the car doorway 7, the position of the door-side hook 262b is closer to the sill-side fixing part 271 than the position of the sill-side hook 272b.

In a state in which the car door 23 fully closes the car doorway 7 and the car floor 62 does not receive a downward load, the vertical distance from the threshold-side projecting portion 272 to the door-side projecting portion 262 is The allowable distance is D. The allowable distance D is larger than the limit distance E when the car floor 62 sinks from the floor reference position to the floor lower limit position.

FIG. 5 is an enlarged view showing the V section of FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. The second guide member 235 has a second mounting plate 238 and a second shoe 239 .

The second mounting plate 238 is fixed to the surface of the door body 232 on the landing 8 side. The second mounting plate 238 protrudes into the threshold groove 25 from the lower portion of the door body 232 . The second mounting plate 238 is fixed to the lower portion of the door body 232 with the thickness direction of the second mounting plate 238 aligned with the width direction of the threshold groove 25 .

The second shoe 239 is fixed to the lower end of the second mounting plate 238. Also, the second shoe 239 is positioned within the threshold groove 25 . The dimension of the second shoe 239 in the width direction of the threshold groove 25 is larger than the dimension of the second mounting plate 238 in the width direction of the threshold groove 25, as shown in FIG. Further, when the additional detachment prevention member 28 is viewed along the frontage direction of the car doorway 7 , the additional detachment prevention member 28 is positioned within the range of the second shoe 239 in the width direction of the threshold groove 25 .

The outer surface of the second shoe 239 includes a second guide first side surface 235a, a second guide second side surface 235b, a second guide lower surface 235c, a second guide first lower inclined surface 235d, and a second guide second lower surface. and an inclined surface 235e.

The second guide first side surface 235 a faces the groove first side surface 251 . The second guide second side surface 235 b faces the groove second side surface 252 . Thereby, the second guide first side surface 235a and the second guide second side surface 235b face opposite sides in the width direction of the threshold groove 25 . When the additional detachment prevention member 28 is viewed along the frontage direction of the car doorway 7, the additional detachment prevention member 28 is positioned between the second guide first side surface 235a and the second guide second side surface 235b.

The second guide lower surface 235c is the lower surface of the second shoe 239. The second guide lower surface 235 c faces the groove bottom surface 253 . Thereby, the second guide lower surface 235c faces downward. The second guide lower surface 235c is positioned between the second guide first side surface 235a and the second guide second side surface 235b when viewed from above.

The second guide first lower inclined surface 235d is formed between the second guide first side surface 235a and the second guide lower surface 235c. The second guide first lower inclined surface 235d is an inclined surface that slopes upward from the second guide lower surface 235c toward the second guide first side surface 235a. Thereby, the second guide first lower inclined surface 235d is inclined downward toward the inner side of the second shoe 239 in the width direction of the threshold groove 25 from the lower end of the second guide first side surface 235a.

The second guide second lower inclined surface 235e is formed between the second guide second side surface 235b and the second guide lower surface 235c. The second guide second lower inclined surface 235e is an inclined surface that slopes upward from the second guide lower surface 235c toward the second guide second side surface 235b. As a result, the second guide second lower inclined surface 235e is inclined downward toward the inner side of the second shoe 239 in the width direction of the threshold groove 25 from the lower end of the second guide second side surface 235b.

Here, the dimension of the second guide first lower inclined surface 235d in the width direction of the threshold groove 25 is defined as the second guide inclination dimension B2. Further, the distance from the second guide first side surface 235a to the additional detachment prevention member 28 in the width direction of the threshold groove 25 is defined as a second offset distance C2. In this case, the sum of the groove inclination dimension A1 and the second guide inclination dimension B2 is larger than the second offset distance C2. That is, the relationship of A1+B2>C2 is established. Also, in the present embodiment, the second offset distance C2 is larger than the second guide tilt dimension B2. That is, the relationship of C2>B2 is established.

The additional detachment prevention member 28 is a plate-shaped member perpendicular to the width direction of the threshold groove 25 . The second guide member 235 and the additional detachment prevention member 28 are fixed to the lower portion of the door body 232 with a plurality of fixing bolts 31 . Each fixing bolt 31 is a common fastener that fixes the second guide member 235 and the additional detachment prevention member 28 to the lower portion of the door body 232 . In this embodiment, the second guide member 235 and the additional detachment prevention member 28 are fastened together to the lower portion of the door body 232 with two fixing bolts 31 .

The additional detachment prevention member 28 has an additional fixing portion 281 and an additional projecting portion 282 .

The additional fixing portion 281 has a fixing body portion 281a and a downward projecting portion 281b. A plurality of elongated holes 283 are provided in the fixed body portion 281a. The plurality of long holes 283 are provided apart from each other in the frontage direction of the car doorway 7 . The long axis of each long hole 283 is an axis along the vertical direction. In this embodiment, two elongated holes 283 are provided in the fixed body portion 281a.

A portion of the fixed body portion 281 a overlaps the second mounting plate 238 of the second guide member 235 . Each fixing bolt 31 is passed through each elongated hole 283 . A fixing bolt 31 passed through the elongated hole 283 passes through the second mounting plate 238 and is screwed into the lower portion of the door body 232 . Thereby, the second guide member 235 and the additional detachment prevention member 28 are fixed to the lower portion of the door body 232 . Therefore, the position of the additional detachment prevention member 28 with respect to the door body 232 can be adjusted in the vertical direction by loosening the tightening of each fixing bolt 31 .

The downward projecting portion 281b projects downward from the fixed body portion 281a. Further, the downward projecting portion 281b is arranged at a position displaced from the second shoe 239 in the opening direction. Thereby, the additional detachment prevention member 28 is fixed to the lower portion of the door body 232 avoiding the second shoe 239 .

The downward protruding portion 281b protrudes from the fixed body portion 281a to a position closer to the groove bottom surface 253 than the position of the second shoe 239. Accordingly, the position of the lower end of the additional detachment prevention member 28 is lower than the position of the lower end of the second guide member 235 .

The additional projecting portion 282 projects from the downward projecting portion 281b of the additional fixing portion 281 in the opening direction. In this embodiment, the additional projecting portion 282 projects in the opening direction from the lower end portion of the downward projecting portion 281b. Thereby, the additional protrusion 282 is held at a position lower than the second shoe 239 .

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

The shape of the additional detachment prevention member 28 is the same as the shape of the door side detachment prevention member 26 . Therefore, the cross-sectional shape of the additional detachment prevention member 28 on a plane perpendicular to the width direction of the threshold groove 25 is the same at any position in the width direction of the threshold groove 25 . The orientation of the additional detachment prevention member 28 in the frontage direction of the car doorway 7 is opposite to the orientation of the door-side detachment prevention member 26 in the frontage direction of the car doorway 7 .

The landing door device 40 on each floor has a landing door support member 41, a landing threshold 42, and a pair of landing doors 43, as shown in FIG.

The landing door support member 41 is arranged above the landing doorway 9 . Further, the landing door support member 41 is fixed to the inner wall surface of the hoistway 1 . The configuration of the landing door support member 41 is the same as the configuration of the car door support member 21 .

The landing threshold 42 is a threshold fixed to the floor of the landing 8 . The landing threshold 42 is provided below the landing doorway 9 . The configuration of the landing threshold 42 is similar to that of the car threshold 22 .

A pair of landing doors 43 are hung on the landing door rails of the landing door support member 41 . The pair of landing doors 43 are movable along the frontage direction of the landing doorway 9 by being guided by the landing door rails.

A landing door interlocking mechanism (not shown) is provided on the landing door support member 41 . The hall door interlocking mechanism unit interlocks the pair of hall doors 43 with each other. As a result, the pair of hall doors 43 can move in opposite directions along the frontage direction of the hall doorway 9 .

At the landing doorway 9, similarly to the car doorway 7, a vertical line passing through the center of the frontage direction of the landing doorway 9 is set as a landing door fully closed reference line. A pair of landing doors 43 opens the landing doorway 9 by moving away from the landing door fully closed reference line, and closes the landing doorway 9 by moving toward the landing door fully closed reference line. That is, in the present embodiment, the hall door device 40 is a central opening type door device.

On the floor where the car 6 is stopped, a pair of car doors 23 face a pair of landing doors 43 . Thereby, the pair of hall doors 43 can be interlocked with the pair of car doors 23 . Therefore, on the floor where the car 6 is stopped, the pair of car doors 23 move in opposite directions, so that the pair of hall doors 43 move in opposite directions along the frontage direction of the hall doorway 9.例文帳に追加The landing doorway 9 is opened and closed by moving the pair of landing doors 43 in opposite directions along the frontage direction of the landing doorway 9 .

Next, I will explain the operation. On the floor where the car 6 is stopped, when the pair of car doors 23 move along the frontage direction of the car doorway 7 by the driving force of the door driving device, the pair of landing doors are interlocked with the movement of the pair of car doors 23. 43 moves along the frontage direction of the landing doorway 9 . As a result, the car doorway 7 and the landing doorway 9 are opened and closed.

Each car door 23 maintains a state in which the first guide member 234, the second guide member 235, the door-side detachment prevention member 26, and the additional detachment prevention member 28 are inserted into the threshold groove 25, and the car doorway 7 is opened. Move along the frontage direction.

When each car door 23 moves in the closing direction, the door-side detachment prevention member 26 moves in the sill groove 25 in a direction approaching the sill-side detachment prevention member 27 . When each car door 23 reaches the position where the car doorway 7 is fully closed, a part of the door-side protrusion 262 of the door-side detachment prevention member 26 exists below the sill-side protrusion 272 of the sill-side detachment prevention member 27. is inserted into the space where

When each car door 23 moves in the opening direction from the state where each car door 23 fully closes the car doorway 7, the door-side detachment prevention member 26 moves away from the sill-side detachment prevention member 27 in the sill groove 25. Moving. As a result, the door-side projecting portion 262 is removed from the space existing below the threshold-side projecting portion 272 .

When a user of the elevator enters the car interior space of the car main body 61, the car floor 62 receives a downward load from the user. As a result, the car floor 62 sinks downward with respect to the car main body 61 from the floor reference position. At this time, the car sill 22 also sinks with respect to the car body 61 together with the car floor 62 .

When the car floor 62 sinks downward with respect to the car main body 61 by the limit distance E from the floor reference position, the car floor 62 reaches the floor lower limit position. At this time, the car sill 22 also sinks by the restricted distance E with respect to the car main body 61 . When the car floor 62 reaches the floor lower limit position, the downward displacement of the car floor 62 and the car sill 22 with respect to the car main body 61 is prevented by the stopper members.

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. In FIG. 7, the respective positions of the car sill 22 and the sill-side projecting portion 272 when the car sill 22 sinks into the car body 61 by the restricted distance E are indicated by two-dot chain lines.

When each car door 23 fully closes the car doorway 7, when the car sill 22 sinks into the car body 61, the sill-side detachment prevention member 27 is displaced downward with respect to the door-side detachment prevention member 26. be done. As a result, the threshold-side projecting portion 272 is displaced in a direction approaching the door-side projecting portion 262 from above. In this case, the threshold-side protrusion 272 may hang over the door-side protrusion 262 from above. If the sill-side projecting portion 272 is hooked to the door-side projecting portion 262 , each car door 23 is difficult to move when opening the car doorway 7 .

However, since the allowable distance D between the sill-side protrusion 272 and the door-side protrusion 262 is greater than the limit distance E, the threshold-side protrusion 272 does not reach the car main body 61 before the door-side protrusion 262 is caught. The downward displacement of the car sill 22 is prevented by the stopper member. As a result, even if the car sill 22 sinks downward with respect to the car body 61 , the sill-side protrusion 272 is kept separated from the door-side protrusion 262 , and the sill-side protrusion 272 moves toward the door-side protrusion 262 . It never hangs.

On the other hand, for example, when a user of the elevator collides with the car door 23 and an external force acts on the car door 23, the car door 23 may bend and the lower part of the car door 23 may be lifted with respect to the car sill 22. In this case, the first guide member 234 and the second guide member 235 may come off the threshold groove 25 upward.

When the lower part of the car door 23 is lifted with respect to the car sill 22 , the door side detachment prevention member 26 and the additional detachment prevention member 28 are displaced upward with respect to the sill side detachment prevention member 27 . As a result, when each car door 23 fully closes the car doorway 7, the door-side projecting portion 262 engages the threshold-side projecting portion 272 from below.

FIG. 8 is an enlarged view showing a state in which the door-side projecting portion 262 of FIG. 3 hangs on the threshold-side projecting portion 272 from below. When the door-side projecting portion 262 hangs from below on the threshold-side projecting portion 272 , the lower ends of the first guide member 234 and the second guide member 235 remain in the threshold groove 25 . This prevents the first guide member 234 and the second guide member 235 from coming off the threshold groove 25 upward.

On the other hand, when the car door 23 is out of the position where the car doorway 7 is fully closed, at least one of the first guide member 234 and the second guide member 235 may come off the threshold groove 25 for some reason.

FIG. 9 is a cross-sectional view showing a state where the first guide member 234 of FIG. 4 is disengaged upward from the threshold groove 25. FIG. The position of the lower end of the door-side detachment prevention member 26 is lower than the position of the lower end of the first guide member 234 . As a result, even if the first guide member 234 is detached upward from the threshold groove 25 , the side surface of the door-side detachment prevention member 26 is hooked to the groove first side surface 251 , so that the first guide member 234 is positioned within the threshold groove 25 . easier to return.

Also, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is larger than the first offset distance C1. Therefore, when the side surface of the door-side detachment prevention member 26 is hooked to the groove first side surface 251, when the car sill 22 is viewed from above, at least a part of the first guiding first lower inclined surface 234d is the groove first upper inclined surface. It overlaps the plane 254 . As a result, after the side surface of the door-side detachment prevention member 26 is hooked to the first side surface 251 of the groove, the first guide member 234 moves at least one of the first guide first lower inclined surface 234 d and the groove first upper inclined surface 254 . contacts the car sill 22 at the position of .

After that, the first guide member 234 moves into the sill groove 25 while being guided by either the groove first upper inclined surface 254 or the first guide lower inclined surface 234 d by the weight of the car door 23 . Therefore, even if the first guide member 234 moves upward from the threshold groove 25 , the first guide member 234 is more likely to return into the threshold groove 25 .

Further, the position of the lower end of the additional detachment prevention member 28 is lower than the position of the lower end of the second guide member 235 . As a result, even if the second guide member 235 is detached upward from the threshold groove 25 , the additional detachment prevention member 28 is engaged with the groove first side surface 251 of the threshold groove 25 . easier to return to.

Also, the sum of the groove inclination dimension A1 and the second guide inclination dimension B2 is larger than the second offset distance C2. Therefore, even if the second guide member 235 moves upward from the threshold groove 25, the second guide member 235 can be guided to either the groove first upper inclined surface 254 or the second guiding first lower inclined surface 235d. This makes it easier for the second guide member 235 to return into the threshold groove 25 .

In such a car door device 20 , the sill-side detachment prevention member 27 is fixed in the sill groove 25 , and the door-side detachment prevention member 26 is fixed to the lower part of the car door 23 . Therefore, the sill-side detachment prevention member 27 can be fixed to the car sill 22 without making the car sill 22 have a special shape. Thereby, the car sill 22 can be manufactured easily, and the car door device 20 can be manufactured easily.

Also, the sill-side detachment prevention member 27 can be easily fixed to the existing car sill 22 . As a result, the door detachment prevention structure 24 can be easily applied to the existing car door device 20 .

Further, when the car door 23 fully closes the car doorway 7, part of the door-side protrusion 262 of the door-side detachment prevention member 26 extends downward from the sill-side protrusion 272 of the sill-side detachment prevention member 27. located far away. Therefore, when the car door 23 is lifted with respect to the car threshold 22, the door-side projecting portion 262 can be hooked to the threshold-side projecting portion 272 from below. As a result, further upward displacement of the car door 23 with respect to the car sill 22 can be prevented, and the insertion portion 233 of the car door 23 can be prevented from coming off the sill groove 25 upward. Therefore, regardless of the depth of the threshold groove 25, it is possible to more reliably prevent the insertion portion 233 of the car door 23 from coming off the threshold groove 25.

Also, part of the door-side projecting portion 262 is separated downward from the threshold-side projecting portion 272 . Therefore, the allowable vertical distance D can be secured between the door-side projecting portion 262 and the threshold-side projecting portion 272 . As a result, even if the car sill 22 sinks with respect to the car body 61 and the sill-side protruding part 272 approaches the door-side protruding part 262, the sill-side protruding part 272 is prevented from hanging on the door-side protruding part 262.例文帳に追加be able to. Therefore, when the car door 23 opens the car doorway, it is possible to prevent the movement of the car door 23 from being hindered by the threshold-side projecting portion 272 and the door-side projecting portion 262 .

Further, when the car door 23 fully closes the car doorway 7, the position of the door-side hook 262b is closer to the sill-side fixing part 271 than the position of the sill-side hook 272b. Therefore, even if the position of the door-side detachment prevention member 26 is shifted in the opening direction with respect to the sill-side detachment prevention member 27 in a state where the door-side projection 262 is hooked to the threshold-side projection 272, the door-side hook 262b is still engaged. can be hooked to the sill-side hook 272b. As a result, it is possible to more reliably maintain the state in which the door-side projecting portion 262 is engaged with the threshold-side projecting portion 272, and to more reliably prevent the insertion portion 233 of the car door 23 from coming off the threshold groove 25. can.

Further, when the door-side detachment-preventing member 26 is viewed along the frontage direction of the car doorway 7, the door-side detachment-preventing member 26 is positioned within the range of the first shoe 237 in the width direction of the threshold groove 25. Therefore, a space can be secured between the side surface of the door-side detachment prevention member 26 and the inner surface of the threshold groove 25 . As a result, it is possible to prevent foreign matter from getting caught between the side surface of the door-side detachment prevention member 26 and the inner surface of the threshold groove 25 . In addition, it is possible to prevent foreign matter from entering the gap between the side surface of the first shoe 237 and the inner surface of the threshold groove 25 from the space between the side surface of the door-side detachment prevention member 26 and the inner surface of the threshold groove 25. can. Therefore, it is possible to prevent the movement of the car door 23 from being hindered due to foreign matter getting caught between the door-side detachment prevention member 26 and the first shoe 237 and the inner surface of the threshold groove 25 .

Also, the first guide member 234 and the door-side detachment prevention member 26 are fixed to the lower portion of the door body 232 by a common fixing bolt 30 . Therefore, it is not necessary to fix the first guide member 234 and the door-side detachment prevention member 26 to the door body 232 with separate bolts, and an increase in the number of parts can be suppressed. Further, by using the existing fixing bolts 30 that fix the first guide member 234 to the door body 232 , the door-side detachment prevention member 26 can be easily fixed to the existing door body 232 .

Further, the sill-side fixing part 271 is detachable from the car sill 22 . Therefore, the sill-side detachment prevention member 27 can be easily fixed to the existing car sill 22 . Further, when the detachment prevention member 27 on the threshold side is damaged, the detachment prevention member 27 on the threshold side can be easily replaced.

In addition, the cross-sectional shape of the sill-side detachment prevention member 27 on a plane orthogonal 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 detachment prevention member 27 can be formed by drawing, and the sill-side detachment prevention member 27 can be easily manufactured. Further, the car sill 22 is often made of a drawn aluminum material formed by drawing an aluminum material. Therefore, the design of the sill-side detachment prevention member 27 can be matched with the design of the car sill 22 by matching the shape of the sill-side detachment prevention member 27 with the shape of the drawn aluminum material. As a result, it is possible to improve the design of the car sill 22 to which the sill-side detachment prevention member 27 is fixed. In addition, the respective materials of the sill-side detachment prevention member 27 and the sill 22 are not limited to aluminum.

Also, the position of the lower end of the door-side detachment prevention member 26 is lower than the position of the lower end of the first guide member 234 . Therefore, even when the first guide member 234 is disengaged from the sill groove 25 , the lower end of the door-side detachment prevention member 26 is caught on the inner surface of the sill groove 25 , thereby allowing the first guide member 234 to move inside the sill groove 25 . can make it easier to return to

Also, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is larger than the first offset distance C1. Therefore, when the lower end of the door-side detachment prevention member 26 is caught on the groove first side surface 251, the position where at least one of the first guiding first lower inclined surface 234d and the groove first upper inclined surface 254 is formed. The first guide member 234 can be brought into contact with the car sill 22 at . As a result, the first guide member 234 can be further easily returned into the threshold groove 25 by guiding the first guide member 234 by either the groove first upper inclined surface 254 or the first guiding first lower inclined surface 234d. can.

Further, the position of the lower end of the additional detachment prevention member 28 is lower than the position of the lower end of the second guide member 235 . Therefore, even if the second guide member 235 is disengaged from the sill groove 25 upward, the lower end of the additional detachment prevention member 28 is hooked on the inner surface of the sill groove 25 , so that the second guide member 235 stays within the sill groove 25 . You can make it easier to return.

Also, the sum of the groove inclination dimension A1 and the second guide inclination dimension B2 is larger than the second offset distance C2. Therefore, when the lower end of the additional detachment prevention member 28 is caught on the groove first side surface 251, at least one of the second guiding first lower inclined surface 235d and the groove first upper inclined surface 254 is formed. A second guide member 235 may be brought into contact with the car sill 22 . As a result, the second guide member 235 can be further easily returned into the threshold groove 25 by guiding the second guide member 235 by either the groove first upper inclined surface 254 or the second guide first lower inclined surface 235d. can.

Further, when the additional detachment prevention member 28 is viewed along the frontage direction of the car doorway 7 , the additional detachment prevention member 28 is positioned within the range of the second shoe 239 in the width direction of the threshold groove 25 . Therefore, a space can be secured between the side surface of the additional detachment prevention member 28 and the inner surface of the threshold groove 25 . As a result, it is possible to prevent foreign matter from getting caught between the side surface of the additional detachment prevention member 28 and the inner surface of the threshold groove 25 . Also, it is possible to prevent foreign matter from entering the gap between the side surface of the second shoe 239 and the inner surface of the threshold groove 25 from the space between the side surface of the additional detachment prevention member 28 and the inner surface of the threshold groove 25 . . Therefore, it is possible to prevent the movement of the car door 23 from being hindered due to foreign matter getting caught between the additional detachment prevention member 28 and the second shoe 239 and the inner surface of the threshold groove 25 .

In addition, the second guide member 235 and the additional detachment prevention member 28 are fixed to the lower portion of the door body 232 by a common fixing bolt 31. Therefore, it is not necessary to fix the second guide member 235 and the additional detachment prevention member 28 to the door body 232 with separate bolts, and an increase in the number of parts can be suppressed. Further, by using the existing fixing bolts 31 that fix the second guide member 235 to the door body 232 , the additional detachment prevention member 28 can be easily fixed to the existing door body 232 .

Also, the shape of the additional detachment prevention member 28 is the same as the shape of the door-side detachment prevention member 26 . Therefore, the additional detachment prevention member 28 and the door-side detachment prevention member 26 can be manufactured by the same manufacturing apparatus, and the manufacture of the door detachment prevention structure 24 can be facilitated.

It should be noted that, in the above embodiment, the sill-side projecting portion 272 has the sill-side hook portion 272b, and the door-side projecting portion 262 has the door-side hook portion 262b. However, the sill-side hook 272b may be omitted. Further, the door-side hook portion 262b may be omitted.

Further, in the above embodiment, the threshold-side projecting portion 272 projects from the upper end portion of the threshold-side fixing portion 271 in the opening direction. However, if the door-side projecting portion 262 can be inserted at a position spaced downward from the threshold-side projecting portion 272 , the threshold-side projecting portion 272 does not have to project from the upper end portion of the threshold-side fixing portion 271 .

Further, in the above embodiment, the door-side protruding portion 262 protrudes in the closing direction from the lower end portion of the downward protruding portion 261b. However, if the door-side protrusion 262 can be inserted at a position spaced downward from the threshold-side protrusion 272, the door-side protrusion 262 does not need to protrude from the lower end of the downward protrusion 261b.

In addition, in the above embodiment, part of the door-side projecting portion 262 is positioned downwardly away from the threshold-side projecting portion 272 when the car door 23 fully closes the car doorway 7 . However, when the car door 23 fully closes the car doorway 7, the entire door-side projecting portion 262 may be located at a position spaced downward from the threshold-side projecting portion 272. FIG.

Also, in the above embodiment, the first guide member 234 and the door-side detachment prevention member 26 are fixed to the lower portion of the door body 232 by the common fixing bolt 30 . However, the fastener for fixing the first guide member 234 to the lower portion of the door body 232 and the fastener for fixing the door-side detachment prevention member 26 to the lower portion of the door body 232 may be separate fasteners.

Also, in the above embodiment, a portion of the door-side detachment prevention member 26 overlaps the first guide member 234 . However, the door-side detachment prevention member 26 may be arranged at a position away from the first guide member 234 in the frontage direction of the car doorway 7 .

Further, in the above embodiment, the sill-side detachment prevention member 27 is fixed in the sill groove 25 by the fixing bolt 29 passed through the bolt through hole 221 extending from the groove bottom surface 253 to the lower surface of the car sill 22 . However, for example, the sill-side detachment prevention member 27 may be fixed in the sill groove 25 by a fastener passed through a bolt hole extending from the first side surface 251 of the groove to the side surface of the car sill 22 .

Also, in the above embodiment, the position of the lower end of the door-side detachment prevention member 26 is lower than the position of the lower end of the first guide member 234 . However, it is not limited to this. For example, the position of the lower end of the door-side detachment prevention member 26 may be higher than the position of the lower end of the first guide member 234 . Further, the position of the lower end of the door-side detachment prevention member 26 may be positioned at the same height as the position of the lower end of the first guide member 234 .

Further, in the above embodiment, the shape of the additional detachment prevention member 28 is the same as the shape of the door-side detachment prevention member 26 . However, the shape of the additional detachment prevention member 28 may be different from the shape of the door side detachment prevention member 26 . Therefore, the additional protrusion 282 may be omitted.

Also, in the above embodiment, the second guide member 235 and the additional detachment prevention member 28 are fixed to the lower portion of the door body 232 by the common fixing bolt 31 . However, the fastener for fixing the second guide member 235 to the lower portion of the door body 232 and the fastener for fixing the additional detachment prevention member 28 to the lower portion of the door body 232 may be separate fasteners.

Also, in the above embodiment, a portion of the additional detachment prevention member 28 overlaps the second guide member 235 . However, the additional detachment prevention member 28 may be arranged at a position away from the second guide member 235 in the frontage direction of the car doorway 7 .

Also, in the above embodiment, the additional detachment prevention member 28 is fixed to the lower portion of the door body 232 . However, the additional detachment prevention member 28 may be omitted.

Further, in the above-described embodiment, the door detachment prevention structure 24 is applied to the car door device 20 of the central opening type. However, the door detachment prevention structure 24 may be applied to a single-opening car door device that opens and closes the car doorway 7 by moving a plurality of car doors 23 in the same direction.

Further, in the above embodiment, the door detachment prevention structure 24 is applied to the car door device 20 . However, the door detachment prevention structure 24 may be applied to the landing door device 40 . In this case, the door-side detachment prevention member 26 and the additional detachment prevention member 28 are fixed to the landing door 43 , and the threshold-side detachment prevention member 27 is fixed in the threshold groove of the landing threshold 42 . In this case, since the landing sill 42 does not sink into the landing door 43, the permissible distance D between the sill-side projecting portion 272 and the door-side projecting portion 262 is determined by applying the door detachment prevention structure 24 to the car door device 20. can be made smaller than when Further, in this case, the landing door device 40 may apply the door detachment prevention structure 24 to a single-opening type landing door device.

7 Car entrance (elevator entrance), 9 Boarding hall entrance (elevator entrance), 20 Car door device (elevator door device), 22 Car threshold (sill), 23 Car door (door), 24 Door detachment prevention structure, 25 Threshold Groove 26 Door side detachment prevention member 27 Threshold side detachment prevention member 28 Additional detachment prevention member 30 Fixing bolt (fastener) 31 Fixing bolt (fastener) 40 Platform door device (elevator door device) 42 Hall threshold (sill), 43 Hall door (door), 223 First upper surface of threshold (upper surface of threshold), 232 Door body, 233 Insertion portion, 234 First guide member, 234a First guide first side surface, 234c First guide Lower surface 234d First guide first lower inclined surface 235 Second guide member 235a Second guide first side surface 235c Second guide lower surface 235d Second guide first lower inclined surface 237 First shoe 239 Second Shoe, 251 Groove first side surface, 252 Groove second side surface, 254 Groove first upper inclined surface, 261 Door side fixed part, 262 Door side projecting part, 262a Door side arm part, 262b Door side hook part, 271 Threshold side fixing part, 272 sill-side protruding part, 272a sill-side arm part, 272b sill-side hook part.

Claims (13)

1. a sill provided below an elevator doorway and having a sill groove along the frontage direction of the elevator doorway;
   a door that opens and closes the elevator doorway by moving along the frontage direction of the elevator doorway;
   Equipped with a door detachment prevention structure and
   The door has a door body and an insertion portion provided at the bottom of the door body,
   The insertion portion has a first guide member inserted into the threshold groove,
   The door detachment prevention structure includes a threshold-side detachment prevention member and a door-side detachment prevention member,
   The sill-side detachment prevention member includes a sill-side fixing portion fixed in the sill groove, and protrudes from the sill-side fixing portion in an opening direction, which is a movement direction of the door when the door opens the elevator doorway. and a sill-side protruding portion,
   The door-side detachment prevention member includes a door-side fixing portion fixed to a lower portion of the door body, and protrudes from the door-side fixing portion in a closing direction, which is a movement direction of the door when the door closes the elevator doorway. and a door-side protrusion that
   When the door fully closes the elevator doorway, at least a part of the door-side projection is positioned downwardly away from the sill-side projection in the threshold groove. .
2. The threshold-side projecting portion has a threshold-side arm projecting in the opening direction from the threshold-side fixing portion and a threshold-side hook projecting downward from the threshold-side arm,
   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,
   2. The apparatus according to claim 1, wherein in a state in which the door fully closes the elevator doorway, the door-side hook is positioned closer to the sill-side fixing portion than the sill-side hook is positioned. Elevator door device.
3. said first guide member having a first shoe positioned within said threshold groove;
   The dimension of the first shoe in the width direction of the threshold groove is larger than the dimension of the door-side detachment prevention member in the width direction of the threshold groove,
   2. The door-side detachment-prevention member is positioned within a range of the first shoe in the width direction of the threshold groove when the door-side detachment-prevention member is viewed along the frontage direction of the elevator doorway. 3. The elevator door system according to claim 2.
4. The elevator door apparatus according to any one of claims 1 to 3, wherein the first guide member and the door-side detachment prevention member are fixed to the lower portion of the door body by a common fastener.
5. The elevator door apparatus according to any one of claims 1 to 4, wherein the threshold-side fixing portion is detachable from the threshold.
6. 6. The cross-sectional shape of the sill-side detachment prevention member in a plane orthogonal to the width direction of the sill groove is the same at any position in the width direction of the sill groove according to any one of claims 1 to 5. elevator door device.
7. The elevator door apparatus according to any one of claims 1 to 6, wherein the position of the lower end of the door-side detachment prevention member is lower than the position of the lower end of the first guide member. .
8. The inner surface of the threshold groove has a groove first side surface and a groove second side surface facing each other in the width direction of the threshold groove,
   the outer surface of the first guide member has a first guide first side surface facing the groove first side surface and a first guide bottom surface facing downward;
   Between the upper surface of the threshold and the first side surface of the groove, a groove first upper inclined surface that slopes downward from the upper surface of the threshold toward the first side surface of the groove is formed,
   A first guide first lower inclined surface is formed between the first guide first side surface and the first guide lower surface, and slopes upward from the first guide lower surface toward the first guide first side surface. and
   The sum of the dimensions of the first upper sloped surface of the groove and the first lower sloped surface of the first guide in the width direction of the sill groove is equal to the door-side detachment prevention member and the first guide in the width direction of the threshold groove. 8. The elevator door system according to claim 7, wherein the distance is greater than the distance between the first side surfaces.
9. an additional detachment prevention member fixed to the bottom of the door;
   The insertion portion has a second guide member inserted into the threshold groove,
   The position of the second guide member is separated from the position of the first guide member in the opening direction,
   The position of the additional detachment prevention member is separated from the position of the door side detachment prevention member in the opening direction,
   The additional detachment prevention member is inserted into the threshold groove,
   The elevator door apparatus according to any one of claims 1 to 8, wherein the position of the lower end of the additional detachment prevention member is lower than the position of the lower end of the second guide member.
10. The inner surface of the threshold groove has a groove first side surface and a groove second side surface facing each other in the width direction of the threshold groove,
    the outer surface of the second guide member has a second guide first side surface facing the groove first side surface and a second guide bottom surface facing downward;
    Between the upper surface of the threshold and the first side surface of the groove, a groove first upper inclined surface that slopes downward from the upper surface of the threshold toward the first side surface of the groove is formed,
    A second guide first lower inclined surface is formed between the second guide first side surface and the second guide lower surface and slopes upward from the second guide lower surface toward the second guide first side surface. and
    The sum of the dimensions of the first upper sloped surface of the groove and the first lower sloped surface of the second guide in the width direction of the sill groove is equal to the additional detachment prevention member and the second guide slanted surface in the width direction of the threshold groove. 10. The elevator door system according to claim 9, wherein the distance is greater than the distance between one side.
11. said second guide member having a second shoe positioned within said threshold groove;
    The dimension of the second shoe in the width direction of the threshold groove is larger than the dimension of the additional detachment prevention member in the width direction of the threshold groove,
    10. The additional detachment prevention member is positioned within a range of the second shoe in the width direction of the threshold groove when the additional detachment prevention member is viewed along the frontage direction of the elevator doorway. 11. The elevator door device according to 10.
12. The elevator door apparatus according to any one of claims 9 to 11, wherein the second guide member and the additional detachment prevention member are fixed to the lower part of the door body by a common fastener.
13. The elevator door apparatus according to any one of claims 9 to 12, wherein the shape of the additional detachment prevention member is the same as the shape of the door-side detachment prevention member.

Images