Door arrangement for an elevator

Abstract

In a door device of an elevator, a threshold-side anti-disengagement member has a threshold-side fixed portion fixed in a threshold groove and a threshold-side protruding portion protruding from the threshold-side fixed portion in a direction of movement of a door when the door opens an elevator entrance. A door-side anti-disengagement member has a door-side fixed portion fixed to a lower portion of a door main body and a door-side protruding portion protruding from the door-side fixed portion in a direction of movement of the door when the door closes the elevator entrance. In a state in which the door completely closes the elevator entrance, at least a portion of the door-side protruding portion is positioned away downward from the threshold-side protruding portion in the threshold groove.

Description

Technical Field

[0001] This disclosure relates to a door device for elevators that opens and closes elevator entrances and exits. Background Technology

[0002] In existing elevator door systems, a guide shoe is installed at the lower end of the sliding door that opens and closes the elevator entrance / exit. A guide groove is provided at the sill of the elevator entrance / exit. The guide shoe is inserted into the guide groove. In existing elevator door systems, when the sliding door is subjected to external force, it deflects, and the guide shoe may disengage from the guide groove.

[0003] In the past, to prevent the guide shoe from detaching from the guide groove, elevator door devices with steps formed on the side of the guide groove have been proposed. When an external force is applied to the sliding door, a portion of the guide shoe hooks onto the step of the guide groove, thereby preventing the guide shoe from detaching from the guide groove (see, for example, Patent Document 1).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2010-208745 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in the existing elevator door assembly shown in Patent Document 1, a special sill needs to be manufactured with steps formed on the side of the guide slot. Therefore, the manufacture of the sill is labor-intensive and time-consuming, as is the manufacture of the elevator door assembly.

[0009] This disclosure was made to solve the aforementioned problem, and its purpose is to obtain an elevator door device that can be easily manufactured.

[0010] Methods for solving problems

[0011] The elevator door device disclosed herein includes: a sill located at the lower part of the elevator entrance / exit, having a sill groove along the lateral width of the elevator entrance / exit; a door that moves along the lateral width of the elevator entrance / exit, thereby opening and closing the elevator entrance / exit; and a door anti-detachment structure, the door having a door body and an insertion part located at the lower part of the door body, the insertion part having a first guide member that inserts into the sill groove, and the door anti-detachment structure having a sill-side anti-detachment member and a door-side anti-detachment member, the sill-side anti-detachment member having a sill-side fixing part and a sill-side protrusion. The sill-side fixing part is fixed in the sill groove, and the sill-side protrusion protrudes from the sill-side fixing part toward the direction of door movement when the elevator entrance is opened, i.e., the opening direction. The door-side anti-detachment component has a door-side fixing part and a door-side protrusion. The door-side fixing part is fixed to the lower part of the door body, and the door-side protrusion protrudes from the door-side fixing part toward the direction of door movement when the elevator entrance is closed, i.e., the closing direction. When the elevator entrance is completely closed, in the sill groove, at least a portion of the door-side protrusion is located at a position that moves downward away from the sill-side protrusion.

[0012] Invention Effects

[0013] According to the elevator door device disclosed herein, elevator door devices can be easily manufactured. Attached Figure Description

[0014] Figure 1 This is a top side view showing the elevator of Embodiment 1.

[0015] Figure 2 It is shown Figure 1 Front view of the car door assembly.

[0016] Figure 3 It is shown Figure 2 Enlarged view of Part III.

[0017] Figure 4 It is along Figure 3 A cross-sectional view along line IV-IV.

[0018] Figure 5 It is shown Figure 2 An enlarged view of the V-shaped part.

[0019] Figure 6 It is along Figure 5 A sectional view along line VI-VI.

[0020] Figure 7 It is shown Figure 3 An enlarged view of the position of the car sill relative to the car door when the car sill has sunk a limited distance E relative to the car body.

[0021] Figure 8 It is shown Figure 3An enlarged view of the door side protrusion being hooked onto the sill side protrusion from below.

[0022] Figure 9 It is shown Figure 4 A cross-sectional view of the first guide component detached from the sill groove and moving upwards. Detailed Implementation

[0023] The embodiments will now be described with reference to the accompanying drawings.

[0024] Implementation Method 1

[0025] Figure 1 This is a top side view of the elevator according to Embodiment 1. In the figure, a machine room 2 is provided at the top of the hoistway 1. A traction machine 3, serving as a drive unit, is installed inside the machine room 2. The traction machine 3 has a drive sheave 4. The drive sheave 4 rotates due to the driving force of the traction machine 3.

[0026] Multiple suspension bodies 5 are wound around the drive sheave 4. These suspension bodies 5 are constructed using ropes or belts. Within the hoistway 1, the car 6 and a counterweight (not shown) are suspended by these suspension bodies 5. The car 6 and the counterweight move vertically within the hoistway 1 via the rotation of the drive sheave 4.

[0027] The car 6 is provided with a car entrance / exit 7, which serves as the elevator entrance / exit. Furthermore, the car 6 is provided with a car door assembly 20, which serves as the elevator's door mechanism. The car door assembly 20 is equipped with a door drive mechanism (not shown). The car door assembly 20 opens and closes the car entrance / exit 7 using the driving force of the door drive mechanism.

[0028] Each floor's landing 8 has a landing entrance / exit 9 serving as the elevator's entrance / exit. On each floor, the space within the shaft 1 is open to the landing 8 through the landing entrance / exit 9. When the car 6 is stopped at any floor, the car entrance / exit 7 is opposite to the landing entrance / exit 9 located on the floor where the car 6 is stopped.

[0029] Each floor is equipped with a landing door device 40, which serves as the elevator's door mechanism. The landing door device 40 opens and closes the landing entrance / exit 9. At the floors where the car 6 stops, the car door device 20 and the landing door device 40 are positioned opposite each other. Thus, the landing door device 40 and the car door device 20 are linked. At the floors where the car 6 stops, the landing entrance / exit 9 is opened and closed by opening and closing the car entrance / exit 7.

[0030] The car 6 has a car body 61 and a car floor 62. The car entrance / exit 7 is located on the car body 61. An interior space is formed in the car body 61.

[0031] At the floor where car 6 stops, elevator users can enter the interior space of car body 61 from floor 8 through floor entrance 9 and car entrance 7. Furthermore, at the floor where car 6 stops, elevator users can reach floor 8 from the interior space of car body 61 through car entrance 7 and floor entrance 9.

[0032] The car 6 is equipped with a vibration damping device (not shown) and a stop component (not shown). The car floor 62 is supported on the lower part of the car body 61 by the vibration damping device. When a user enters the car interior space of the car body 61 and rests on the car floor 62, the car floor 62 bears a downward load from the user. The vibration damping device deforms according to the magnitude of the load borne by the car floor 62.

[0033] When the car floor 62 is not under load, its position relative to the car body 61 becomes the floor reference position. When the car floor 62 is under a downward load, it sinks downward relative to the car body 61 from the floor reference position, depending on the magnitude of the load.

[0034] The stop component limits the amount of downward movement of the car floor 62 relative to the car body 61. When the car floor 62 has shifted downward by a limited distance E relative to the car body 61 from the floor reference position, the position of the car floor 62 relative to the car body 61 becomes the lower limit position of the floor. At this time, the stop component prevents the car floor 62 from shifting downward relative to the car body 61. That is, in the car 6, the car floor 62 is prevented from exceeding the lower limit position of the floor and sinking downward relative to the car body 61.

[0035] Figure 2 It is shown Figure 1 Front view of the car door assembly 20. Figure 2 The image shows the car door assembly 20 as viewed from the side of floor 8. The car door assembly 20 includes a car door support component 21, a car sill 22, a pair of car doors 23, and a pair of door anti-derailment structures 24.

[0036] The car door support component 21 is positioned above the car entrance / exit 7. Furthermore, the car door support component 21 is fixed to the car 6. The car door support component 21 includes a car hanger housing 211 and a car door track 212.

[0037] The car hanger shell 211 is fixed to the car body 61. The car door track 212 is fixed to the car hanger shell 211. The car door track 212 is arranged along the horizontal width direction of the car entrance / exit 7. That is, the car door track 212 is arranged along... Figure 2 The left and right directional configuration.

[0038] The car sill 22 is a sill fixed to the car floor 62. The car sill 22 is located at the lower part of the car entrance / exit 7. Furthermore, the car sill 22 is arranged along the width direction of the car entrance / exit 7. A sill groove 25 is provided in the car sill 22 along the width direction of the car entrance / exit 7. The sill groove 25 opens upwards.

[0039] A pair of car doors 23 are engaged with the car door track 212. Furthermore, the pair of car doors 23 are guided by the car door track 212, thereby enabling them to move along the width of the car entrance / exit 7.

[0040] A car door linkage mechanism (not shown) is provided on the car hoist housing 211. The car door linkage mechanism enables a pair of car doors 23 to move in opposite directions along the width of the car entrance / exit 7.

[0041] A door drive unit is also installed in the car hoist housing 211. The door drive unit generates a driving force that moves a pair of car doors 23. The driving force of the door drive unit is transmitted to the pair of car doors 23 via the car door linkage mechanism. The driving force of the door drive unit causes the pair of car doors 23 to move in opposite directions, thereby opening and closing the car entrance / exit 7.

[0042] A car door closure reference line P is provided at the car entrance / exit 7. The car door closure reference line P is a vertical line passing through the center of the car entrance / exit 7 in the horizontal direction. A pair of car doors 23 move away from the car door closure reference line P, thereby opening the car entrance / exit 7. Conversely, a pair of car doors 23 move closer to the car door closure reference line P, thereby closing the car entrance / exit 7. That is, in this embodiment, the car door assembly 20 is a centrally opening door assembly.

[0043] Each car door 23 has a door hanger 231, a door body 232, and an insertion part 233.

[0044] The door hanger 231 is attached to the car door track 212. The door hanger 231 is fixed to the upper end of the door body 232.

[0045] The door body 232 is a panel suspended from the car door track 212 via the door hanger 231. As the door hanger 231 moves along the car door track 212, the door body 232 opens and closes the car entrance / exit 7.

[0046] The insertion part 233 is provided at the lower part of the door body 232. In addition, the insertion part 233 is inserted into the sill groove 25 of the car sill 22.

[0047] The insertion part 233 has a first guide member 234 and a second guide member 235. The first guide member 234 and the second guide member 235 are respectively provided at the lower part of the door body 232.

[0048] Here, the direction of movement of the car door 23 when it closes the car entrance / exit 7 is defined as the closing direction. Furthermore, the direction of movement of the car door 23 when it opens the car entrance / exit 7 is defined as the opening direction. In this case, the position of the second guide member 235 moves away from the position of the first guide member 234 in the opening direction.

[0049] Furthermore, the end of the door body 232 located at the car entrance / exit 7 in the horizontal width direction, closer to the car door fully closed reference line P, is designated as the closing end, and the end farther from the car door fully closed reference line P is designated as the opening end. In this case, the first guide member 234 is provided at the lower part of the closing end of the door body 232. Furthermore, the second guide member 235 is provided at the lower part of the opening end of the door body 232.

[0050] The first guide component 234 and the second guide component 235 are respectively inserted into the sill groove 25 of the car sill 22. Each car door 23 moves along the horizontal width direction of the car entrance / exit 7 while maintaining the state in which the first guide component 234 and the second guide component 235 are respectively inserted into the sill groove 25.

[0051] One of the pair of door anti-detachment structures 24 corresponds to one car door 23, and the other door anti-detachment structure 24 corresponds to the other car door 23. The pair of door anti-detachment structures 24 respectively prevent the insertion portion 233 of the corresponding car door 23 from easily disengaging from the sill groove 25. Each door anti-detachment structure 24 has a door-side anti-detachment component 26, a sill-side anti-detachment component 27, and an additional anti-detachment component 28.

[0052] The sill-side anti-detachment component 27 is a separate component from the car sill 22. The sill-side anti-detachment component 27 is fixed within the sill groove 25. The sill-side anti-detachment component 27 is positioned away from the position of the first guide component 234 when the car door 23 is fully closed at the car entrance / exit 7 in the closing direction.

[0053] The anti-detachment components 27 on the sill sides of the pair of door anti-detachment structures 24 are arranged symmetrically about the car door fully closed reference line P. In this embodiment, the anti-detachment components 27 on the sill sides of the pair of door anti-detachment structures 24 are interconnected to form a single unit.

[0054] The door-side anti-detachment component 26 and the additional anti-detachment component 28 are fixed to the lower part of the car door 23. Furthermore, the door-side anti-detachment component 26 and the additional anti-detachment component 28 are inserted into the sill groove 25. The position of the additional anti-detachment component 28 is away from the position of the door-side anti-detachment component 26 in the opening direction. In this embodiment, the door-side anti-detachment component 26 is fixed to the lower part of the closing side end of the door body 232. Furthermore, in this embodiment, the additional anti-detachment component 28 is fixed to the lower part of the opening side end of the door body 232.

[0055] The door-side anti-detachment component 26 and the additional anti-detachment component 28 move toward the sill-side anti-detachment component 27 as the car door 23 moves toward the closing direction. Furthermore, the door-side anti-detachment component 26 and the additional anti-detachment component 28 move away from the sill-side anti-detachment component 27 as the car door 23 moves toward the opening direction.

[0056] Figure 3 It is shown Figure 2 An enlarged view of Part III. Furthermore... Figure 4 It is along Figure 3 A cross-sectional view along line IV-IV. The first guide component 234 has a first mounting plate 236 and a first boot 237.

[0057] The first mounting plate 236 is fixed to the side of the door body 232 facing the floor 8. Furthermore, the first mounting plate 236 protrudes from the lower part of the door body 232 into the sill groove 25. Here, the direction perpendicular to the length direction and horizontal to the width direction of the sill groove 25 is defined as the width direction of the sill groove 25. In this case, the first mounting plate 236 is fixed to the lower part of the door body 232 with the thickness direction of the first mounting plate 236 aligned with the width direction of the sill groove 25.

[0058] The first shoe 237 is fixed to the lower end of the first mounting plate 236. Furthermore, the first shoe 237 is located within the sill groove 25. For example... Figure 4 As shown, the dimension of the first boot 237 in the width direction of the sill groove 25 is larger than the dimension of the first mounting plate 236 in the width direction of the sill groove 25. Furthermore, when the door-side anti-detachment member 26 is viewed along the transverse width direction of the car entrance / exit 7, the door-side anti-detachment member 26 is located within the range of the first boot 237 in the width direction of the sill groove 25.

[0059] like Figure 4As shown, the inner surface of the sill groove 25 has a first side surface 251, a second side surface 252, and a bottom surface 253. The first side surface 251 and the second side surface 252 are opposite to each other in the width direction of the sill groove 25. The position of the second side surface 252 is closer to the car floor 62 than the position of the first side surface 251. The bottom surface 253 is the bottom surface of the sill groove 25. That is, the bottom surface 253 is the surface connecting the lower ends of the first side surface 251 and the second side surface 252.

[0060] The upper surface of the car sill 22 has a first upper surface 223 adjacent to the first side 251 of the groove and a second upper surface 224 adjacent to the second side 252 of the groove. The position of the second upper surface 224 is closer to the position of the car floor 62 than the position of the first upper surface 223.

[0061] An upper inclined surface 254 of the groove is formed between the first upper surface 223 of the sill and the first side surface 251 of the groove. The upper inclined surface 254 of the groove is an inclined surface that slopes downward from the first upper surface 223 of the sill toward the first side surface 251 of the groove. Thus, the upper inclined surface 254 of the groove slopes downward from the first upper surface 223 of the sill toward the inside of the groove 25.

[0062] An upper inclined surface 255 of the second groove is formed between the second upper surface 224 of the sill and the second side surface 252 of the groove. The upper inclined surface 255 of the second groove is an inclined surface that slopes downward from the second upper surface 224 of the sill toward the second side surface 252 of the groove. Thus, the upper inclined surface 255 of the second groove slopes downward from the second upper surface 224 of the sill toward the inside of the sill groove 25.

[0063] The outer surface of the first boot 237 has 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 inclined surface 234e.

[0064] The first guide side 234a faces the first side 251 of the groove. The second guide side 234b faces the second side 252 of the groove. Thus, the first guide side 234a and the second guide side 234b face opposite sides in the width direction of the sill groove 25. When the door-side anti-detachment member 26 is viewed along the transverse width direction of the car entrance / exit 7, the door-side anti-detachment member 26 is located between the first guide side 234a and the second guide side 234b.

[0065] The lower surface 234c of the first guide is the lower surface of the first shoe 237. The lower surface 234c of the first guide is opposite to the bottom surface 253 of the groove. Thus, the lower surface 234c of the first guide faces downward. When viewed from above, the lower surface 234c of the first guide lies within the area between the first side surface 234a and the second side surface 234b of the first guide.

[0066] The first guide's first lower inclined surface 234d is formed between the first guide's first side surface 234a and the first guide's lower surface 234c. The first guide's first lower inclined surface 234d is an inclined surface that slopes upward from the first guide's lower surface 234c toward the first guide's first side surface 234a. Thus, the first guide's first lower inclined surface 234d slopes downward from the lower end of the first guide's first side surface 234a toward the inside of the first boot 237 in the width direction of the sill groove 25.

[0067] The second lower inclined surface 234e of the first guide is formed between the second side surface 234b of the first guide and the lower surface 234c of the first guide. The second lower inclined surface 234e of the first guide is an inclined surface that slopes upward from the lower surface 234c of the first guide toward the second side surface 234b of the first guide. Thus, the second lower inclined surface 234e of the first guide slopes downward from the lower end of the second side surface 234b of the first guide toward the inside of the first boot 237 in the width direction of the sill groove 25.

[0068] Here, the dimension of the first upper inclined surface 254 of the groove in the width direction of the sill groove 25 is defined as the groove inclination dimension A1. Furthermore, the dimension of the first lower inclined surface 234d of the first guide in the width direction of the sill groove 25 is defined as the first guide inclination dimension B1. Moreover, the distance from the first side surface 234a of the first guide to the door-side anti-slip member 26 in the width direction of the sill groove 25 is defined as the first offset distance C1. In this case, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is greater than the first offset distance C1. That is, the relationship A1 + B1 > C1 holds true. Furthermore, in this embodiment, the first offset distance C1 is greater than the first guide inclination dimension B1. That is, the relationship C1 > B1 holds true.

[0069] like Figure 3 As shown, the upper surface of the sill-side anti-detachment component 27 is at the same height as the upper surface of the car sill 22. The cross-sectional shape of the sill-side anti-detachment component 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 anti-detachment component 27 has a sill-side fixing part 271 and a sill-side protrusion 272.

[0070] The sill-side fixing part 271 is fixed within the sill groove 25. In a pair of door anti-detachment structures 24, the sill-side fixing parts 271 of each sill-side anti-detachment component 27 are connected to each other. Each sill-side fixing part 271, which is connected to each other and becomes an integral unit, has a fixing surface 271a that overlaps with the bottom surface 253 of the groove. A threaded hole is provided on the fixing surface 271a.

[0071] The car sill 22 is provided with bolt through holes 221 and multiple discharge holes 222. The bolt through holes 221 and each discharge hole 222 are through holes from the bottom surface 253 of the groove to the lower surface of the car sill 22.

[0072] The fixing bolt 29, acting as a fastener, passes through the bolt through hole 221. Each discharge hole 222 is a through hole for discharging foreign objects in the sill groove 25 downwards toward the bottom of the car sill 22. The discharge holes 222 are provided at least below the door-side anti-detachment component 26 and the additional anti-detachment component 28 when the car door 23 is fully closed at the car entrance / exit 7.

[0073] The fixing bolt 29, passing through the bolt through hole 221, is screwed into the threaded hole provided on the fixing surface 271a. The interconnected and integrated floor sill fixing parts 271 are fixed to the bottom surface 253 of the groove by means of the fixing bolt 29 passing through the bolt through hole 221. Thus, the floor sill fixing parts 271 can be installed and removed relative to the bottom surface 253 of the groove. Therefore, the floor sill anti-detachment parts 27 can be installed and removed relative to the car floor sill 22.

[0074] The sill-side protrusion 272 protrudes from the sill-side fixing portion 271 in the opening direction. In this embodiment, the sill-side protrusion 272 protrudes from the upper end of the sill-side fixing portion 271 in the opening direction. Thus, the sill-side protrusion 272 is held in a position that moves upward away from the bottom surface 253 of the trench.

[0075] The sill-side protrusion 272 has a sill-side arm portion 272a and a sill-side hook portion 272b. The sill-side arm portion 272a protrudes from the sill-side fixing portion 271 in the opening direction. The sill-side hook portion 272b protrudes downward from the sill-side arm portion 272a. In this embodiment, the sill-side hook portion 272b is provided at one of the two ends of the sill-side arm portion 272a on the side away from the sill-side fixing portion 271.

[0076] The door-side anti-slip component 26 is a plate-shaped component perpendicular to the width direction of the sill groove 25. The cross-sectional shape of the door-side anti-slip component 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.

[0077] The first guide component 234 and the door-side anti-detachment component 26 are fixed to the lower part 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 component 234 and the door-side anti-detachment component 26 to the lower part of the door body 232. In this embodiment, the first guide component 234 and the door-side anti-detachment component 26 are jointly fastened to the lower part of the door body 232 by two fixing bolts 30.

[0078] The door-side anti-detachment component 26 has a door-side fixing part 261 and a door-side protrusion 262.

[0079] The door-side fixing part 261 has a fixing main body 261a and a lower protrusion 261b. A plurality of elongated holes 263 are provided in the fixing main body 261a. The plurality of elongated holes 263 are positioned separately from each other in the transverse width direction of the car entrance / exit 7. Each elongated hole 263 is an elongated hole along the vertical direction. In this embodiment, two elongated holes 263 are provided in the fixing main body 261a.

[0080] A portion of the fixed main body 261a overlaps with the first mounting plate 236 of the first guide member 234. Each fixing bolt 30 passes through each elongated hole 263. The fixing bolts 30, after passing through the elongated holes 263, penetrate the first mounting plate 236 and are screwed into the lower part of the door body 232. Thus, the first guide member 234 and the door-side anti-detachment member 26 are fixed to the lower part of the door body 232. By loosening the fixing bolts 30, the position of the door-side anti-detachment member 26 relative to the door body 232 can be adjusted in the vertical direction.

[0081] The lower protrusion 261b protrudes downward from the fixed body portion 261a. Furthermore, the lower protrusion 261b is positioned offset from the first boot 237 in the closing direction, that is, closer to the sill-side anti-slip member 27 than the first boot 237. Thus, the door-side anti-slip member 26 is fixed to the lower part of the door body 232, avoiding the first boot 237.

[0082] The lower protrusion 261b protrudes from the fixed body portion 261a to a position closer to the bottom surface 253 of the groove than the position of the first boot 237. As a result, the lower end of the door-side anti-slip member 26 is positioned lower than the lower end of the first guide member 234.

[0083] The door-side protrusion 262 protrudes from the lower protrusion 261b of the door-side fixing part 261 in the closing direction. In this embodiment, the door-side protrusion 262 protrudes from the lower end of the lower protrusion 261b in the closing direction. As a result, the door-side protrusion 262 is held at a position lower than the sill-side protrusion 272 and the first boot 237, respectively.

[0084] The door-side protrusion 262 has a door-side arm portion 262a and a door-side hook portion 262b. The door-side arm portion 262a protrudes from the lower protrusion 261b in the closing direction. The door-side hook portion 262b protrudes upward from the door-side arm portion 262a. In this embodiment, the door-side hook portion 262b is provided at one of the two ends of the door-side arm portion 262a on the side away from the door-side fixing portion 261.

[0085] With the car door 23 fully closed at the car entrance / exit 7, the door-side fixing part 261 is positioned further away from the sill-side anti-detachment member 27 in the opening direction. Furthermore, with the car door 23 fully closed at the car entrance / exit 7, within the sill groove 25, a portion of the door-side protrusion 262 is positioned further downward from the sill-side protrusion 272. Thus, with the car door 23 fully closed at the car entrance / exit 7, when viewed from above, a portion of the door-side protrusion 262 overlaps with the area of ​​the sill-side protrusion 272. Additionally, with the car door 23 fully closed at the car entrance / exit 7, the position of the door-side hook 262b is closer to the position of the sill-side fixing part 271 than the position of the sill-side hook 272b.

[0086] With the car door 23 fully closed to the car entrance / exit 7 and the car floor 62 not subjected to a downward load, the vertical distance from the sill-side protrusion 272 to the door-side protrusion 262 is the allowable distance D. The allowable distance D is greater than the limit distance E when the car floor 62 sinks from the floor reference position to the lower limit position of the floor.

[0087] Figure 5 It is shown Figure 2 An enlarged view of the V-shaped portion. Furthermore... Figure 6 It is along Figure 5 A sectional view along line VI-VI. The second guide component 235 has a second mounting plate 238 and a second boot 239.

[0088] The second mounting plate 238 is fixed to the side of the door body 232 facing the floor station 8. Furthermore, the second mounting plate 238 protrudes from the lower part of the door body 232 into the sill groove 25. The second mounting plate 238 is fixed to the lower part of the door body 232 such that the thickness direction of the second mounting plate 238 aligns with the width direction of the sill groove 25.

[0089] The second boot 239 is fixed to the lower end of the second mounting plate 238. Furthermore, the second boot 239 is located within the sill groove 25. For example... Figure 6As shown, the dimension of the second boot 239 in the width direction of the sill groove 25 is larger than the dimension of the second mounting plate 238 in the width direction of the sill groove 25. Furthermore, when the additional anti-detachment component 28 is viewed along the transverse width direction of the car entrance / exit 7, the additional anti-detachment component 28 is located within the range of the second boot 239 in the width direction of the sill groove 25.

[0090] The outer surface of the second boot 239 has a first side 235a of the second guide, a second side 235b of the second guide, a lower surface 235c of the second guide, a first lower inclined surface 235d of the second guide, and a second lower inclined surface 235e of the second guide.

[0091] The first side 235a of the second guide is opposite to the first side 251 of the groove. The second side 235b of the second guide is opposite to the second side 252 of the groove. Thus, the first side 235a and the second side 235b of the second guide face opposite sides in the width direction of the sill groove 25. When the additional anti-detachment component 28 is viewed along the transverse width direction of the car entrance / exit 7, the additional anti-detachment component 28 is located between the first side 235a and the second side 235b of the second guide.

[0092] The lower surface 235c of the second guide is the lower surface of the second shoe 239. The lower surface 235c of the second guide is opposite to the bottom surface 253 of the groove. Thus, the lower surface 235c of the second guide faces downward. When viewed from above, the lower surface 235c of the second guide lies within the area between the first side surface 235a and the second side surface 235b of the second guide.

[0093] The second guide's first lower inclined surface 235d is formed between the second guide's first side surface 235a and the second guide's lower surface 235c. The second guide's first lower inclined surface 235d is an inclined surface that slopes upward from the second guide's lower surface 235c toward the second guide's first side surface 235a. Thus, the second guide's first lower inclined surface 235d slopes downward from the lower end of the second guide's first side surface 235a toward the inside of the second boot 239 in the width direction of the sill groove 25.

[0094] The second guide's second lower inclined surface 235e is formed between the second guide's second side surface 235b and the second guide's lower surface 235c. The second guide's second lower inclined surface 235e is an inclined surface that slopes upward from the second guide's lower surface 235c toward the second guide's second side surface 235b. Thus, the second guide's second lower inclined surface 235e slopes downward from the lower end of the second guide's second side surface 235b toward the inside of the second boot 239 in the width direction of the sill groove 25.

[0095] Here, the dimension of the first lower inclined surface 235d of the second guide in the width direction of the sill groove 25 is defined as the second guide inclined dimension B2. Furthermore, the distance from the first side surface 235a of the second guide to the additional anti-detachment member 28 in the width direction of the sill groove 25 is defined as the second offset distance C2. In this case, the sum of the groove inclined dimension A1 and the second guide inclined dimension B2 is greater than the second offset distance C2. That is, the relationship A1 + B2 > C2 holds true. Moreover, in this embodiment, the second offset distance C2 is greater than the second guide inclined dimension B2. That is, the relationship C2 > B2 holds true.

[0096] The additional anti-detachment component 28 is a plate-shaped component perpendicular to the width direction of the sill groove 25. The second guide component 235 and the additional anti-detachment component 28 are fixed to the lower part of the door body 232 by a plurality of fixing bolts 31. Each fixing bolt 31 is a common fastener for fixing the second guide component 235 and the additional anti-detachment component 28 to the lower part of the door body 232. In this embodiment, the second guide component 235 and the additional anti-detachment component 28 are jointly fastened to the lower part of the door body 232 by two fixing bolts 31.

[0097] The additional anti-detachment component 28 has an additional fixing part 281 and an additional protrusion 282.

[0098] The additional fixing part 281 has a fixing main body 281a and a lower protrusion 281b. A plurality of elongated holes 283 are provided in the fixing main body 281a. The plurality of elongated holes 283 are provided separately from each other in the transverse width direction of the car entrance / exit 7. The major axis of each elongated hole 283 is an axis along the vertical direction. In this embodiment, two elongated holes 283 are provided in the fixing main body 281a.

[0099] A portion of the fixed main body 281a overlaps with the second mounting plate 238 of the second guide member 235. Each fixing bolt 31 passes through each elongated hole 283. The fixing bolt 31, after passing through the elongated hole 283, passes through the second mounting plate 238 and is screwed onto the lower part of the door body 232. Thus, the second guide member 235 and the additional anti-detachment member 28 are fixed to the lower part of the door body 232. Therefore, by loosening the tightening of each fixing bolt 31, the position of the additional anti-detachment member 28 relative to the door body 232 can be adjusted in the vertical direction.

[0100] The lower protrusion 281b protrudes downward from the fixed main body 281a. Furthermore, the lower protrusion 281b is positioned offset from the second boot 239 in the opening direction. Thus, the additional anti-slip member 28 is fixed to the lower part of the door body 232, bypassing the second boot 239.

[0101] The lower protrusion 281b protrudes from the fixing body 281a to a position closer to the bottom surface 253 of the groove than the position of the second boot 239. As a result, the lower end of the additional anti-slip member 28 is positioned lower than the lower end of the second guide member 235.

[0102] The additional protrusion 282 protrudes in the opening direction from the lower protrusion 281b of the additional fixing part 281. In this embodiment, the additional protrusion 282 protrudes in the opening direction from the lower end of the lower protrusion 281b. As a result, the additional protrusion 282 is held in a position lower than the second boot 239.

[0103] The additional protrusion 282 has an additional arm 282a and an additional hook 282b. The additional arm 282a protrudes from the lower protrusion 281b in the opening direction. The additional hook 282b protrudes from the additional arm 282a upward.

[0104] The shape of the additional anti-detachment component 28 is the same as that of the door-side anti-detachment component 26. Therefore, the cross-sectional shape of the additional anti-detachment component 28 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 orientation of the additional anti-detachment component 28 in the transverse width direction of the car entrance / exit 7 is opposite to the orientation of the door-side anti-detachment component 26 in the transverse width direction of the car entrance / exit 7.

[0105] like Figure 1 As shown, each floor's landing door device 40 has a landing door support component 41, a landing sill 42, and a pair of landing doors 43.

[0106] The landing door support component 41 is positioned above the landing entrance / exit 9. Furthermore, the landing door support component 41 is fixed to the inner wall of the hoistway 1. The structure of the landing door support component 41 is the same as that of the car door support component 21.

[0107] The landing sill 42 is a sill fixed to the floor of landing 8. Landing sill 42 is located below landing entrance / exit 9. The structure of landing sill 42 is the same as that of car sill 22.

[0108] A pair of landing doors 43 are engaged with the landing door track of the landing door support component 41. The pair of landing doors 43 are guided by the landing door track, thereby enabling them to move along the lateral width of the landing entrance / exit 9.

[0109] A landing door linkage mechanism (not shown) is provided on the landing door support component 41. The landing door linkage mechanism enables a pair of landing doors 43 to move in opposite directions along the width of the landing entrance / exit 9.

[0110] Similar to the car entrance / exit 7, a vertical line passing through the center of the horizontal width of the landing entrance / exit 9 serves as the landing door fully closed reference line. When a pair of landing doors 43 move away from the landing door fully closed reference line, the landing entrance / exit 9 is opened; conversely, when the pair of landing doors 43 move closer to the landing door fully closed reference line, the landing entrance / exit 9 is closed. That is, in this embodiment, the landing door device 40 is a centrally opening door device.

[0111] At the floor where car 6 stops, a pair of car doors 23 and a pair of landing doors 43 are positioned opposite each other. Thus, the landing doors 43 can be linked with the car doors 23. Therefore, at the floor where car 6 stops, the car doors 23 move in opposite directions, thereby causing the landing doors 43 to move in opposite directions along the width of the landing entrance 9. The movement of the landing doors 43 in opposite directions along the width of the landing entrance 9 opens and closes the landing entrance 9.

[0112] Next, the operation will be explained. At the floor where the car 6 is stopped, when the driving force of the door drive device moves a pair of car doors 23 along the horizontal width direction of the car entrance / exit 7, a pair of landing doors 43 move in conjunction with the movement of the pair of car doors 23 along the horizontal width direction of the landing entrance / exit 9. This opens and closes the car entrance / exit 7 and the landing entrance / exit 9.

[0113] Each car door 23 moves along the horizontal width direction of the car entrance / exit 7 while maintaining the state in which the first guide component 234, the second guide component 235, the door side anti-detachment component 26 and the additional anti-detachment component 28 are respectively inserted into the sill groove 25.

[0114] As each car door 23 moves in the closing direction, the door-side anti-detachment component 26 moves within the sill groove 25 towards the sill-side anti-detachment component 27. When each car door 23 reaches the position of fully closing the car entrance / exit 7, a portion of the door-side protrusion 262 of the door-side anti-detachment component 26 inserts into the space below the sill-side protrusion 272 of the sill-side anti-detachment component 27.

[0115] As each car door 23 moves in the opening direction from the state where each car door 23 has completely closed the car entrance / exit 7, the door-side anti-detachment component 26 moves away from the sill-side anti-detachment component 27 within the sill groove 25. As a result, the door-side protrusion 262 disengages from the space below the sill-side protrusion 272.

[0116] When an elevator user enters the car interior space of the car body 61, the car floor 62 bears a downward load from the user. As a result, the car floor 62 sinks downward relative to the car body 61 from its floor reference position. At this time, the car sill 22 also sinks relative to the car body 61 along with the car floor 62.

[0117] When the car floor 62 has sunk a limited distance E downward relative to the car body 61 from its floor reference position, the car floor 62 reaches its lower floor limit position. At this time, the car sill 22 also sunk a limited distance E relative to the car body 61. When the car floor 62 reaches its lower floor limit position, a stop mechanism prevents the car floor 62 and the car sill 22 from shifting downward relative to the car body 61.

[0118] Figure 7 It is shown Figure 3 An enlarged view of the position of the car sill 22 relative to the car door 23 when the car sill 22 has sunk a limited distance E relative to the car body 61. Additionally, in Figure 7 In the diagram, the positions of the car sill 22 and the side protrusion 272 are shown by double-dotted lines when the car sill 22 has sunk a limited distance E relative to the car body 61.

[0119] With all car doors 23 fully closed at the car entrance / exit 7, as the car sill 22 descends relative to the car body 61, the sill-side anti-detachment component 27 shifts downward relative to the door-side anti-detachment component 26. Consequently, the sill-side protrusion 272 shifts towards the door-side protrusion 262 from above. In this case, the sill-side protrusion 272 may become caught on the door-side protrusion 262 from above. If the sill-side protrusion 272 becomes caught on the door-side protrusion 262, then when each car door 23 opens the car entrance / exit 7, the car doors 23 will not easily move.

[0120] However, the permissible distance D between the sill-side protrusion 272 and the door-side protrusion 262 is greater than the limiting distance E. Therefore, before the sill-side protrusion 272 engages with the door-side protrusion 262, the stop member prevents the car sill 22 from shifting downward relative to the car body 61. Thus, even if the car sill 22 sinks downward relative to the car body 61, the sill-side protrusion 272 can remain separated from the door-side protrusion 262, and the sill-side protrusion 272 will not engage with the door-side protrusion 262.

[0121] On the other hand, for example, if an elevator user bumps into the car door 23, causing an external force to be applied to the car door 23, the car door 23 may sometimes flex, causing the lower part of the car door 23 to lift relative to the car sill 22. In this case, the first guide member 234 and the second guide member 235 may detach upward from the sill groove 25.

[0122] When the lower part of the car door 23 is raised relative to the car sill 22, the door-side anti-detachment component 26 and the additional anti-detachment component 28 are moved upward relative to the sill-side anti-detachment component 27. As a result, with each car door 23 fully closed to the car entrance / exit 7, the door-side protrusion 262 is engaged with the sill-side protrusion 272 from below.

[0123] Figure 8 It is shown Figure 3 An enlarged view showing the door-side protrusion 262 being engaged with the sill-side protrusion 272 from below. With the door-side protrusion 262 engaged with the sill-side protrusion 272 from below, the lower ends of the first guide member 234 and the second guide member 235 remain within the sill groove 25. This prevents the first guide member 234 and the second guide member 235 from disengaging upwards from the sill groove 25.

[0124] On the other hand, when the car door 23 disengages from the position where the car entrance / exit 7 is fully closed, for some reason, at least one of the first guide member 234 and the second guide member 235 may disengage upward from the sill groove 25.

[0125] Figure 9 It is shown Figure 4 A cross-sectional view of the first guide member 234 detached from the sill groove 25 upwards. The lower end of the door-side anti-detachment member 26 is positioned lower than the lower end of the first guide member 234. Therefore, even if the first guide member 234 detaches from the sill groove 25 upwards, the side of the door-side anti-detachment member 26 is engaged with the first side 251 of the groove, thus allowing the first guide member 234 to easily return into the sill groove 25.

[0126] Furthermore, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is greater than the first offset distance C1. Therefore, with the side of the door-side anti-detachment member 26 engaged with the first side of the groove 251, when the car sill 22 is viewed from above, at least a portion of the first guide lower inclination surface 234d overlaps with the first groove upper inclination surface 254. Consequently, after the side of the door-side anti-detachment member 26 is engaged with the first side of the groove 251, the first guide member 234 contacts the car sill 22 at at least one of the first guide lower inclination surface 234d and the first groove upper inclination surface 254.

[0127] Then, the first guide member 234 moves within the sill groove 25 by the weight of the car door 23, guided by either the first upper inclined surface 254 of the groove or the first lower inclined surface 234d of the first guide. Therefore, even if the first guide member 234 disengages upward from the sill groove 25, it is easier for the first guide member 234 to return to the sill groove 25.

[0128] Furthermore, the lower end of the additional anti-detachment component 28 is positioned lower than the lower end of the second guide component 235. Therefore, even if the second guide component 235 detaches upwards from the sill groove 25, the additional anti-detachment component 28 remains engaged with the first side 251 of the sill groove 25, allowing the second guide component 235 to easily return to the sill groove 25.

[0129] Furthermore, the sum of the groove inclination dimension A1 and the second guide inclination dimension B2 is greater than the second offset distance C2. Therefore, even if the second guide member 235 disengages upward from the sill groove 25, the second guide member 235 is guided by either the first upper inclination surface 254 of the groove or the first lower inclination surface 235d of the second guide, thus making it easier for the second guide member 235 to return to the sill groove 25.

[0130] In this car door assembly 20, the sill-side anti-detachment component 27 is fixed within the sill groove 25, and the door-side anti-detachment component 26 is fixed to the lower part of the car door 23. Therefore, the sill-side anti-detachment component 27 can be fixed to the car sill 22 without making the shape of the car sill 22 special. As a result, the car sill 22 and the car door assembly 20 can be manufactured easily.

[0131] Furthermore, the anti-detachment component 27 of the sill side can be easily fixed relative to the existing car sill 22. As a result, the anti-detachment structure 24 of the door can be easily applied to the existing car door device 20.

[0132] Furthermore, with the car door 23 fully closed to the car entrance / exit 7, a portion of the door-side protrusion 262 in the door-side anti-detachment member 26 is positioned downwards from the sill-side protrusion 272 in the sill-side anti-detachment member 27. Therefore, when the car door 23 is raised relative to the car sill 22, the door-side protrusion 262 can engage with the sill-side protrusion 272 from below. This prevents the car door 23 from shifting further upwards relative to the car sill 22, and makes it difficult for the insertion portion 233 of the car door 23 to detach upwards from the sill groove 25. Therefore, the insertion portion 233 of the car door 23 can be more reliably prevented from detaching from the sill groove 25, regardless of the depth of the sill groove 25.

[0133] Furthermore, a portion of the door-side protrusion 262 extends downward from the sill-side protrusion 272. Therefore, a permissible vertical distance D can be ensured between the door-side protrusion 262 and the sill-side protrusion 272. Thus, even if the car sill 22 sinks relative to the car body 61, causing the sill-side protrusion 272 to approach the door-side protrusion 262, the sill-side protrusion 272 will not become stuck on the door-side protrusion 262. Therefore, when the car door 23 opens the car entrance / exit, the sill-side protrusion 272 and the door-side protrusion 262 can be prevented from obstructing the movement of the car door 23.

[0134] Furthermore, when the car door 23 is fully closed to the car entrance / exit 7, the position of the door-side hook 262b is closer to the position of the sill-side fixing part 271 than the position of the sill-side hook 272b. Therefore, even when the door-side protrusion 262 is engaged with the sill-side protrusion 272, and the position of the door-side anti-detachment member 26 is offset in the opening direction relative to the sill-side anti-detachment member 27, the door-side hook 262b can still be engaged with the sill-side hook 272b. As a result, the state in which the door-side protrusion 262 is engaged with the sill-side protrusion 272 can be maintained more reliably, and the insertion part 233 of the car door 23 can be more reliably prevented from disengaging from the sill groove 25.

[0135] Furthermore, when the door-side anti-detachment member 26 is viewed along the lateral width of the car entrance / exit 7, it is located within the range of the first shoe 237 in the width direction of the sill groove 25. Therefore, space can be ensured between the side of the door-side anti-detachment member 26 and the inner surface of the sill groove 25. This prevents foreign objects from getting stuck between the side of the door-side anti-detachment member 26 and the inner surface of the sill groove 25. Furthermore, it also prevents foreign objects from entering the gap between the side of the first shoe 237 and the inner surface of the sill groove 25 from the space between the side of the door-side anti-detachment member 26 and the inner surface of the sill groove 25. Therefore, it prevents the movement of the car door 23 from being hindered by foreign objects getting stuck between the door-side anti-detachment member 26 and the first shoe 237 and the inner surface of the sill groove 25.

[0136] Furthermore, the first guide member 234 and the door-side anti-detachment member 26 are fixed to the lower part 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 anti-detachment member 26 to the door body 232 separately by separate bolts, which can suppress the increase in the number of parts. In addition, by using the existing fixing bolt 30 to fix the first guide member 234 to the door body 232, the door-side anti-detachment member 26 can be easily fixed to the existing door body 232.

[0137] Furthermore, the sill-side fixing part 271 can be detached from and attached to the car sill 22. Therefore, the sill-side anti-detachment component 27 can be easily fixed to the existing car sill 22. In addition, if the sill-side anti-detachment component 27 is damaged, it can be easily replaced.

[0138] Furthermore, the cross-sectional shape of the sill-side anti-detachment component 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 anti-detachment component 27 can be formed by drawing, and can be easily manufactured. Moreover, in the car sill 22, aluminum drawn material formed by drawing aluminum raw materials is mostly used. Therefore, by making the shape of the sill-side anti-detachment component 27 conform to the shape used in the aluminum drawn material, the design of the sill-side anti-detachment component 27 can conform to the design of the car sill 22. This improves the design of the car sill 22 with the sill-side anti-detachment component 27 fixed. Additionally, the raw materials for both the sill-side anti-detachment component 27 and the sill 22 are not limited to aluminum.

[0139] Furthermore, the lower end of the door-side anti-detachment component 26 is positioned lower than the lower end of the first guide component 234. Therefore, when the first guide component 234 detaches from the sill groove 25 upwards, the lower end of the door-side anti-detachment component 26 also engages with the inner surface of the sill groove 25, thereby allowing the first guide component 234 to easily return to the sill groove 25.

[0140] Furthermore, the sum of the groove inclination dimension A1 and the first guide inclination dimension B1 is greater than the first offset distance C1. Therefore, when the lower end of the door-side anti-detachment member 26 is engaged with the first side surface 251 of the groove, the first guide member 234 can contact the car sill 22 at a position where at least one of the first guide lower inclination surface 234d and the groove upper inclination surface 254 is formed. Thus, guided by either the groove upper inclination surface 254 or the first guide lower inclination surface 234d, the first guide member 234 can more easily return to the sill groove 25.

[0141] Furthermore, the lower end of the additional anti-detachment component 28 is positioned lower than the lower end of the second guide component 235. Therefore, when the second guide component 235 detaches upward from the sill groove 25, the lower end of the additional anti-detachment component 28 also engages with the inner surface of the sill groove 25, thereby allowing the second guide component 235 to easily return into the sill groove 25.

[0142] Furthermore, the sum of the groove inclination dimension A1 and the second guide inclination dimension B2 is greater than the second offset distance C2. Therefore, when the lower end of the additional anti-detachment member 28 is engaged with the first side surface 251 of the groove, the second guide member 235 can contact the car sill 22 at a position where at least one of the second guide first lower inclination surface 235d and the groove first upper inclination surface 254 is formed. Thus, guided by either the groove first upper inclination surface 254 or the second guide first lower inclination surface 235d, the second guide member 235 can more easily return to the sill groove 25.

[0143] Furthermore, when the additional anti-detachment component 28 is viewed along the lateral width of the car entrance / exit 7, it is located within the range of the second boot 239 in the width direction of the sill groove 25. Therefore, space can be ensured between the side of the additional anti-detachment component 28 and the inner surface of the sill groove 25. This prevents foreign objects from getting stuck between the side of the additional anti-detachment component 28 and the inner surface of the sill groove 25. Furthermore, it also prevents foreign objects from entering the gap between the side of the second boot 239 and the inner surface of the sill groove 25 from the space between the side of the additional anti-detachment component 28 and the inner surface of the sill groove 25. Therefore, it prevents the movement of the car door 23 from being hindered by foreign objects getting stuck between the additional anti-detachment component 28 and the second boot 239 and the inner surface of the sill groove 25.

[0144] Furthermore, the second guide member 235 and the additional anti-detachment member 28 are fixed to the lower part 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 anti-detachment member 28 to the door body 232 separately by separate bolts, which can suppress the increase in the number of parts. In addition, by using the existing fixing bolt 31 to fix the second guide member 235 to the door body 232, the additional anti-detachment member 28 can be easily fixed to the existing door body 232.

[0145] Furthermore, the shape of the additional anti-detachment component 28 is the same as that of the door-side anti-detachment component 26. Therefore, the additional anti-detachment component 28 and the door-side anti-detachment component 26 can be manufactured separately using the same manufacturing apparatus, and the door anti-detachment structure 24 can be easily manufactured.

[0146] Furthermore, in the above embodiment, the sill-side protrusion 272 has a sill-side hook 272b, and the door-side protrusion 262 has a door-side hook 262b. However, the sill-side hook 272b may not be present. Additionally, the door-side hook 262b may not be present.

[0147] Furthermore, in the above embodiment, the sill-side protrusion 272 protrudes from the upper end of the sill-side fixing portion 271 in the opening direction. However, as long as the door-side protrusion 262 can be inserted to a position where it moves downward away from the sill-side protrusion 272, the sill-side protrusion 272 may not protrude from the upper end of the sill-side fixing portion 271.

[0148] Furthermore, in the above embodiment, the door-side protrusion 262 protrudes from the lower end of the lower protrusion 261b in the closing direction. However, as long as the door-side protrusion 262 can be inserted to a position where it moves downward away from the sill-side protrusion 272, the door-side protrusion 262 may not protrude from the lower end of the lower protrusion 261b.

[0149] Furthermore, in the above embodiment, when the car door 23 is fully closed to the car entrance / exit 7, a portion of the door-side protrusion 262 is located at a position that moves downward from the sill-side protrusion 272. However, it is also possible that when the car door 23 is fully closed to the car entrance / exit 7, the entire door-side protrusion 262 is located at a position that moves downward from the sill-side protrusion 272.

[0150] Furthermore, in the above embodiment, the first guide member 234 and the door-side anti-detachment member 26 are fixed to the lower part of the door body 232 by a common fixing bolt 30. However, the fasteners for fixing the first guide member 234 to the lower part of the door body 232 and the fasteners for fixing the door-side anti-detachment member 26 to the lower part of the door body 232 can also be different fasteners.

[0151] Furthermore, in the above embodiment, a portion of the door-side anti-detachment component 26 overlaps with the first guide component 234. However, the door-side anti-detachment component 26 may also be positioned at a location that moves away from the first guide component 234 in the lateral direction of the car entrance / exit 7.

[0152] Furthermore, in the above embodiment, the sill-side anti-detachment component 27 is fixed in the sill groove 25 by means of a fixing bolt 29 passing through a bolt through hole 221 from the bottom surface 253 of the groove to the lower surface of the car sill 22. However, for example, the sill-side anti-detachment component 27 may also be fixed in the sill groove 25 by means of a fastener passing through a bolt through hole from the first side surface 251 of the groove to the side surface of the car sill 22.

[0153] Furthermore, in the above embodiment, the lower end of the door-side anti-slip member 26 is positioned lower than the lower end of the first guide member 234. However, this is not a limitation. For example, the lower end of the door-side anti-slip member 26 may also be positioned higher than the lower end of the first guide member 234. Alternatively, the lower end of the door-side anti-slip member 26 may be positioned at the same height as the lower end of the first guide member 234.

[0154] Furthermore, in the above embodiment, the shape of the additional anti-detachment member 28 is the same as the shape of the door-side anti-detachment member 26. However, the shape of the additional anti-detachment member 28 may also be different from the shape of the door-side anti-detachment member 26. Therefore, the additional protrusion 282 may not be present.

[0155] Furthermore, in the above embodiment, the second guide member 235 and the additional anti-detachment member 28 are fixed to the lower part of the door body 232 by a common fixing bolt 31. However, the fasteners for fixing the second guide member 235 to the lower part of the door body 232 and the fasteners for fixing the additional anti-detachment member 28 to the lower part of the door body 232 can also be different fasteners.

[0156] Furthermore, in the above embodiment, a portion of the additional anti-detachment component 28 overlaps with the second guide component 235. However, the additional anti-detachment component 28 may also be positioned at a location that moves away from the second guide component 235 in the lateral direction of the car entrance / exit 7.

[0157] Furthermore, in the above embodiment, the additional anti-detachment component 28 is fixed to the lower part of the door body 232. However, the additional anti-detachment component 28 may not be present.

[0158] Furthermore, in the above embodiment, the door anti-derailment structure 24 is applied to the centrally opening car door device 20. However, the door anti-derailment structure 24 may also be applied to a single-opening car door device that opens and closes the car entrance / exit 7 by moving multiple car doors 23 in the same direction.

[0159] Furthermore, in the above embodiment, the door anti-detachment structure 24 is applied to the car door assembly 20. However, the door anti-detachment structure 24 can also be applied to the landing door assembly 40. In this case, a door-side anti-detachment member 26 and an additional anti-detachment member 28 are fixed to the landing door 43, and a sill-side anti-detachment member 27 is fixed in the sill groove of the landing sill 42. In this case, the landing sill 42 will not sink relative to the landing door 43, and therefore, compared with the case of applying the door anti-detachment structure 24 to the car door assembly 20, the permissible distance D between the sill-side protrusion 272 and the door-side protrusion 262 can be reduced. Furthermore, in this case, the door anti-detachment structure 24 can also be applied to a single-opening landing door assembly 40.

[0160] Label Explanation

[0161] 7: Car entrance / exit (elevator entrance / exit); 9: Landing entrance / exit (elevator entrance / exit); 20: Car door assembly (elevator door assembly); 22: Car sill (sill); 23: Car door (door); 24: Door anti-detachment structure; 25: Sill groove; 26: Door side anti-detachment component; 27: Sill side anti-detachment component; 28: Additional anti-detachment component; 30: Fixing bolt (fastener); 31: Fixing bolt (fastener); 40: Landing door assembly (elevator door assembly); 42: Landing sill (sill); 43: Landing door (door); 223: First upper surface of the sill (upper surface of the sill); 232: Door body; 233: Insertion part; 234: First guide component; 2 34a: First guide, first side surface; 234c: First guide, lower surface; 234d: First guide, lower inclined surface; 235: Second guide component; 235a: Second guide, first side surface; 235c: Second guide, lower surface; 235d: Second guide, lower inclined surface; 237: First boot; 239: Second boot; 251: Groove, first side surface; 252: Groove, second side surface; 254: Groove, first upper inclined surface; 261: Door side fixing part; 262: Door side protrusion; 262a: Door side arm; 262b: Door side hook; 271: Sill side fixing part; 272: Sill side protrusion; 272a: Sill side arm; 272b: Sill side hook.

Claims

1. A door device for an elevator, wherein, The elevator door assembly has: A sill is provided at the lower part of the elevator entrance / exit, and a sill groove is provided along the horizontal width of the elevator entrance / exit; A door that moves along the width of the elevator entrance / exit, thereby opening and closing the elevator entrance / exit; and Door anti-detachment structure, The door has a door body and an insertion part disposed at the lower part of the door body. The insertion part has a first guide component that inserts into the sill groove. The door anti-loosening structure includes a sill-side anti-loosening component and a door-side anti-loosening component. The sill-side anti-detachment component has a sill-side fixing part and a sill-side protrusion. The sill-side fixing part is fixed in the sill groove, and the sill-side protrusion protrudes from the sill-side fixing part in the direction of door movement (opening direction) when the elevator entrance / exit is opened. The door-side anti-detachment component has a door-side fixing part and a door-side protrusion. The door-side fixing part is fixed to the lower part of the door body, and the door-side protrusion extends from the door-side fixing part in the direction of door movement when the door closes the elevator entrance / exit, i.e., the closing direction. With the elevator entrance / exit fully closed by the door, at least a portion of the door-side protrusion within the sill groove is positioned downwards from the sill-side protrusion. The sill-side protrusion has a sill-side arm protruding from the sill-side fixing part in the opening direction and a sill-side hook protruding downward from the sill-side arm. The door-side protrusion has a door-side arm protruding from the door-side fixing part in the closing direction and a door-side hook protruding upward from the door-side arm. When the elevator entrance is completely closed by the door, the position of the door-side hook is closer to the position of the sill-side fixing part than the position of the sill-side hook.

2. A door device for an elevator, wherein, The elevator door assembly has: A sill is provided at the lower part of the elevator entrance / exit, and a sill groove is provided along the horizontal width of the elevator entrance / exit; A door that moves along the width of the elevator entrance / exit, thereby opening and closing the elevator entrance / exit; and Door anti-detachment structure, The door has a door body and an insertion part disposed at the lower part of the door body. The insertion part has a first guide component that inserts into the sill groove. The door anti-loosening structure includes a sill-side anti-loosening component and a door-side anti-loosening component. The sill-side anti-detachment component has a sill-side fixing part and a sill-side protrusion. The sill-side fixing part is fixed in the sill groove, and the sill-side protrusion protrudes from the sill-side fixing part in the direction of door movement (opening direction) when the elevator entrance / exit is opened. The door-side anti-detachment component has a door-side fixing part and a door-side protrusion. The door-side fixing part is fixed to the lower part of the door body, and the door-side protrusion extends from the door-side fixing part in the direction of door movement when the door closes the elevator entrance / exit, i.e., the closing direction. With the elevator entrance / exit fully closed by the door, at least a portion of the door-side protrusion within the sill groove is positioned downwards from the sill-side protrusion. The first guiding component has a first boot located within the sill groove. The dimension of the first boot in the width direction of the sill groove is larger than the dimension of the door-side anti-slip component in the width direction of the sill groove. When the door-side anti-detachment component is viewed along the horizontal width direction of the elevator entrance / exit, the door-side anti-detachment component is located within the range of the first boot in the width direction of the sill groove.

3. A door device for an elevator, wherein, The elevator door assembly has: A sill is provided at the lower part of the elevator entrance / exit, and a sill groove is provided along the horizontal width of the elevator entrance / exit; A door that moves along the width of the elevator entrance / exit, thereby opening and closing the elevator entrance / exit; and Door anti-detachment structure, The door has a door body and an insertion part disposed at the lower part of the door body. The insertion part has a first guide component that inserts into the sill groove. The door anti-loosening structure includes a sill-side anti-loosening component and a door-side anti-loosening component. The sill-side anti-detachment component has a sill-side fixing part and a sill-side protrusion. The sill-side fixing part is fixed in the sill groove, and the sill-side protrusion protrudes from the sill-side fixing part in the direction of door movement (opening direction) when the elevator entrance / exit is opened. The door-side anti-detachment component has a door-side fixing part and a door-side protrusion. The door-side fixing part is fixed to the lower part of the door body, and the door-side protrusion extends from the door-side fixing part in the direction of door movement when the door closes the elevator entrance / exit, i.e., the closing direction. With the elevator entrance / exit fully closed by the door, at least a portion of the door-side protrusion is positioned downwards from the sill-side protrusion within the sill groove, and the lower end of the door-side anti-detachment component is positioned lower than the lower end of the first guide component. The inner surface of the sill groove has a first side surface and a second side surface that are opposite to each other in the width direction of the sill groove. The outer surface of the first guide member has a first guide first side surface opposite to the first side surface of the groove and a first guide lower surface facing downward. An inclined surface, the upper part of the first groove, is formed between the upper surface of the sill and the first side surface of the groove, sloping downward from the upper surface of the sill toward the first side surface of the groove. A first guide lower inclined surface is formed between the first guide first side surface and the first guide lower surface, which slopes upward from the first guide lower surface toward the first guide first side surface. The sum of the dimensions of the first upper inclined surface of the groove and the first lower inclined surface of the first guide in the width direction of the sill groove is greater than the distance between the door-side anti-detachment component and the first side surface of the first guide in the width direction of the sill groove.

4. A door device for an elevator, wherein, The elevator door assembly has: A sill is provided at the lower part of the elevator entrance / exit, and a sill groove is provided along the horizontal width of the elevator entrance / exit; A door that moves along the width of the elevator entrance / exit, thereby opening and closing the elevator entrance / exit; and Door anti-detachment structure, The door has a door body and an insertion part disposed at the lower part of the door body. The insertion part has a first guide component that inserts into the sill groove. The door anti-loosening structure includes a sill-side anti-loosening component and a door-side anti-loosening component. The sill-side anti-detachment component has a sill-side fixing part and a sill-side protrusion. The sill-side fixing part is fixed in the sill groove, and the sill-side protrusion protrudes from the sill-side fixing part in the direction of door movement (opening direction) when the elevator entrance / exit is opened. The door-side anti-detachment component has a door-side fixing part and a door-side protrusion. The door-side fixing part is fixed to the lower part of the door body, and the door-side protrusion extends from the door-side fixing part in the direction of door movement when the door closes the elevator entrance / exit, i.e., the closing direction. With the elevator entrance / exit fully closed by the door, at least a portion of the door-side protrusion within the sill groove is positioned downwards from the sill-side protrusion. The elevator door assembly has an additional anti-detachment component fixed to the lower part of the door. The insertion part has a second guide component that inserts into the sill groove. The position of the second guide component is away from the position of the first guide component in the opening direction. The additional anti-detachment component is positioned away from the position of the door-side anti-detachment component in the opening direction. The additional anti-detachment component is inserted into the sill groove. The lower end of the additional anti-detachment component is positioned lower than the lower end of the second guide component.

5. The elevator door device according to claim 4, wherein, The inner surface of the sill groove has a first side surface and a second side surface that are opposite to each other in the width direction of the sill groove. The outer surface of the second guide member has a second guide first side surface opposite to the first side surface of the groove and a second guide lower surface facing downward. An inclined surface, the upper part of the first groove, is formed between the upper surface of the sill and the first side surface of the groove, sloping downward from the upper surface of the sill toward the first side surface of the groove. An inclined surface for the lower part of the second guide is formed between the first side surface of the second guide and the lower surface of the second guide, which slopes upward from the lower surface of the second guide toward the first side surface of the second guide. The sum of the dimensions of the first upper inclined surface of the groove and the first lower inclined surface of the second guide in the width direction of the sill groove is greater than the distance between the additional anti-detachment component and the first side of the second guide in the width direction of the sill groove.

6. The elevator door device according to claim 4, wherein, The second guide component has a second boot located within the sill groove. The second boot is larger in the width direction of the sill groove than the additional anti-slip component is in the width direction of the sill groove. When the additional anti-detachment component is viewed along the width of the elevator entrance / exit, the additional anti-detachment component is located within the range of the second boot in the width direction of the sill groove.

7. The elevator door device according to claim 5, wherein, The second guide component has a second boot located within the sill groove. The second boot is larger in the width direction of the sill groove than the additional anti-slip component is in the width direction of the sill groove. When the additional anti-detachment component is viewed along the width of the elevator entrance / exit, the additional anti-detachment component is located within the range of the second boot in the width direction of the sill groove.

8. The elevator door device according to claim 4, wherein, The second guide component and the additional anti-detachment component are fixed to the lower part of the door body by a common fastener.

9. The elevator door device according to claim 5, wherein, The second guide component and the additional anti-detachment component are fixed to the lower part of the door body by a common fastener.

10. The elevator door device according to claim 6, wherein, The second guide component and the additional anti-detachment component are fixed to the lower part of the door body by a common fastener.

11. The elevator door device according to claim 7, wherein, The second guide component and the additional anti-detachment component are fixed to the lower part of the door body by a common fastener.

12. The elevator door device according to any one of claims 4 to 11, wherein, The shape of the additional anti-detachment component is the same as the shape of the door-side anti-detachment component.

13. The elevator door device according to any one of claims 1-2 and 4-11, wherein, The lower end of the door-side anti-slip component is positioned lower than the lower end of the first guide component.

14. The elevator door device according to claim 12, wherein, The lower end of the door-side anti-slip component is positioned lower than the lower end of the first guide component.

15. The elevator door device according to any one of claims 1 to 11, wherein, The first guide component and the door-side anti-detachment component are fixed to the lower part of the door body by a common fastener.

16. The elevator door assembly according to claim 12, wherein, The first guide component and the door-side anti-detachment component are fixed to the lower part of the door body by a common fastener.

17. The elevator door assembly according to claim 13, wherein, The first guide component and the door-side anti-detachment component are fixed to the lower part of the door body by a common fastener.

18. The elevator door assembly according to claim 14, wherein, The first guide component and the door-side anti-detachment component are fixed to the lower part of the door body by a common fastener.

19. The elevator door device according to any one of claims 1 to 11, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

20. The elevator door assembly according to claim 12, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

21. The elevator door assembly according to claim 13, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

22. The elevator door assembly according to claim 14, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

23. The elevator door assembly according to claim 15, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

24. The elevator door assembly according to claim 16, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

25. The elevator door assembly according to claim 17, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

26. The elevator door assembly according to claim 18, wherein, The side fixing part of the sill can be detached and installed relative to the sill.

27. The elevator door device according to any one of claims 1 to 11, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

28. The elevator door assembly according to claim 12, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

29. The elevator door device according to claim 13, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

30. The elevator door assembly according to claim 14, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

31. The elevator door assembly according to claim 15, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

32. The elevator door assembly according to claim 16, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

33. The elevator door assembly according to claim 17, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

34. The elevator door assembly according to claim 18, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

35. The elevator door assembly according to claim 19, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

36. The elevator door assembly according to claim 20, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

37. The elevator door device according to claim 21, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

38. The elevator door assembly according to claim 22, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

39. The elevator door assembly according to claim 23, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

40. The elevator door assembly according to claim 24, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

41. The elevator door assembly according to claim 25, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

42. The elevator door assembly according to claim 26, wherein, The cross-sectional shape of the anti-detachment component on the sill side is the same at any position in the width direction of the sill groove in a plane perpendicular to the width direction of the sill groove.

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