Sill of an elevator door

Abstract

The present disclosure aims to provide a sill of an elevator door capable of reducing noise generated when a car sill approaches a landing sill during elevator operation. The present disclosure is a sill of an elevator door that guides opening and closing of a door device provided in an elevator, and includes: a main body portion that extends in an opening and closing direction of the door device and has a groove that guides opening and closing of the door device by sliding a sliding member provided in a lower portion of the door device; and a guide portion that extends from at least one end portion of the main body portion in a direction away from the door device throughout an opening and closing stroke of the door device, guides opening and closing of the door device by sliding the sliding member, and has a total cross-sectional area of the main body portion and the guide portion when the sill of the elevator door is viewed from a vertical direction that is smaller than a cross-sectional area of the main body portion when the main body portion extends to an end portion of the guide portion.

Description

Technical Field

[0001] This disclosure relates to a threshold for an elevator door. Background Technology

[0002] Previously, elevator landings (hereinafter referred to as landings) and elevator cars (hereinafter referred to as cars) were equipped with door devices to open and close the landing and car entrances.

[0003] Regarding such door devices, for example, a sill that guides the opening and closing of the door device is provided at the landing and in the car (e.g., Patent Document 1).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 9-25078 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] The elevator disclosed in Patent Document 1 has a sealing plate between the landing sill and the car sill to prevent carried items from falling into the shaft. However, to reduce the significant wind noise and impact sounds generated by the sealing plate due to the large wind pressure during the car's descent, ventilation holes are provided in the sealing plate. However, in the elevator disclosed in Patent Document 1, when the elevator car passes a landing, the landing sill and car sill are close together, reducing the airflow area between them. Therefore, the noise generated by air turbulence cannot be reduced.

[0009] This disclosure was made to solve the above-mentioned problems, and its purpose is to provide an elevator door sill that can reduce the noise generated when the landing sill and the car sill approach each other during elevator operation.

[0010] Methods for solving problems

[0011] The elevator door sill disclosed herein is an elevator door sill that guides the opening and closing of a door device installed in an elevator. It comprises: a main body extending along the opening and closing direction of the door device and having a groove for guiding the opening and closing of the door device by sliding a sliding member provided at the lower part of the door device; and a guide portion extending from at least one end of the main body in a direction away from the door device throughout the opening and closing stroke of the door device, for guiding the opening and closing of the door device by sliding the sliding member. The sum of the cross-sectional areas of the main body and the guide portion when the elevator door sill is viewed from the vertical direction is less than the cross-sectional area of ​​the main body when the elevator door sill is viewed from the vertical direction when the main body extends to the end of the guide portion.

[0012] Invention Effects

[0013] According to the elevator door sill disclosed herein, the noise generated when the landing sill and the car sill approach each other during elevator operation can be reduced. Attached Figure Description

[0014] Figure 1 This is a diagram showing a portion of the front view of the elevator according to Embodiment 1.

[0015] Figure 2 This is a diagram showing a portion of the side view of the elevator according to Embodiment 1.

[0016] Figure 3 This is a diagram showing the perimeter of the car door in Embodiment 1.

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

[0018] Figure 5 This is a diagram showing the perimeter of the landing door in Embodiment 1.

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

[0020] Figure 7 This is a partial top view of the car sill of Embodiment 2.

[0021] Figure 8 This is a partial front view of the car sill of Embodiment 2.

[0022] Figure 9 This is a partial top view showing the car sill and landing sill of Embodiment 2.

[0023] Figure 10 This is a partial front view of the car sill in embodiment 3 when the car is in a stopped state.

[0024] Figure 11 This is a partial front view of the car sill in the raised state of Embodiment 3.

[0025] Figure 12 This is a partial front view of the car sill in the lowered state of Embodiment 3.

[0026] Label Explanation

[0027] 1: Car; 2: Upper beam; 3: Lower beam; 4: Column; 5: Rope; 6: Counterweight; 7: Car door; 8: Car door assembly; 9: Landing door; 10: Landing door assembly; 11: Hanger plate; 12: Hanger roller; 13: Hanger housing; 14: Door track; 15: Car sill; 16: Car sill main body; 16A: Car sill main body; 17: Car sill guide; 17A: Car sill guide; 19: Door shoe; 20: Groove; 21: Baffle; 22: Landing sill; 23: Landing sill main body; 23A: Landing sill main body; 24: Landing sill guide; 24A: Landing sill guide; 26: Inclined plate; 27: Rotating shaft; 28: Force-applying body; 29: Locking component; 100: Elevator door sill. Detailed Implementation

[0028] The embodiments of this disclosure will now be described using the accompanying drawings. In the drawings, identical or equivalent parts are labeled with the same reference numerals. Repetitive descriptions are simplified or omitted where appropriate. Furthermore, this disclosure is not limited to the embodiments described below. Additionally, in the following description, the opening and closing directions of the landing doors and car doors are referred to as the opening and closing directions or left-right directions, the direction of passenger boarding and alighting is referred to as the front-back direction, and the direction of car movement is referred to as the vertical direction or up-down direction.

[0029] Implementation Method 1

[0030] The sill of the elevator door in Implementation Method 1 will be described. Figure 1 This is a front view showing a portion of the elevator with the sill of the elevator door as described in Embodiment 1. Furthermore, Figure 2 This is a side view of a portion of an elevator, showing the sill of the elevator door in embodiment 1.

[0031] like Figure 1 , 2 As shown, the car 1, which moves up and down within the shaft along with the elevator's movement, is rectangular in shape. Around the car 1 are an upper beam 2, a lower beam 3, and a pair of left and right columns 4 supporting the car 1. A rope 5 for suspending the car 1 is fixed to the upper beam 2. The rope 5 can be wound using a traction machine (not shown). That is, by using the traction machine to wind the rope 5, the car 1 moves up and down in the vertical direction.

[0032] The other end of the rope 5, which is fixed to the car 1, is fixed to the counterweight 6. The counterweight 6 is suspended by the rope 5 via the traction machine and the pulley, and is positioned on the rear surface of the car 1. The counterweight 6 moves up and down in the opposite direction to the lifting and lowering movement of the car 1.

[0033] Figure 3 This diagram shows the car door device 8. A car door device 8 is provided on the landing side of the car 1 to open and close the car door 7 when users board and alight. Furthermore, as... Figure 5As shown, a landing door device 10 is provided on the hoistway side of the landing station to open and close the landing door 9 when users board and alight. In this embodiment, the elevator door refers to a door including the car door 7 and the landing door 9. In addition, the elevator door sill 100 guides the opening and closing of the door devices provided in the elevator, including the sill of the car door 7 and the sill of the landing door 9.

[0034] also, Figure 3 This is a diagram showing the periphery of the car door when viewed from the landing side of the car door assembly 8. Figure 3 The car door device 8 has two car doors 7. The car doors 7 are double doors that open and close to the left and right respectively.

[0035] like Figure 3 As shown, the upper part of the car door 7 is connected to the hanger plate 11A. A hanger roller 12A is provided on the hanger plate 11A. The hanger roller 12A is mounted on the hanger housing 13A. The hanger housing 13A has a door track 14A, and the hanger roller 12A can move left and right along the door track 14A.

[0036] A car sill 15, constituting the sill 100 of the elevator door, is provided at the lower part of the car door assembly 8. The car sill 15 guides the opening and closing of the car door 7 of the car door assembly 8. The car sill 15 consists of a car sill body 16 and a car sill guide 17. The car sill body 16 can be manufactured, for example, by cutting or extruding a metal block, or by other known methods.

[0037] The car sill body 16 constitutes the main body of the elevator door sill 100. The car sill body 16 extends along the opening and closing direction of the car door assembly 8. A door shoe 19, serving as a sliding member, is provided at the lower part of the car door assembly 8. When the car door 7 opens and closes, the door shoe 19 slides on the car sill body 16. The door shoe 19 is, for example, provided at the lower end of the car door assembly 8. The car sill body 16 has a groove 20 that guides the opening and closing of the car door assembly 8 by allowing the door shoe 19 to slide. It can be said that the sliding direction of the car door 7 is determined by the movement of the door shoe 19 along the groove 20 of the car sill body 16. Furthermore, a baffle 21 for preventing the car from falling is provided at the lower end of the car 1 on the landing side.

[0038] The car sill guide 17 forms the guide portion of the elevator door sill 100. The car sill guide 17 is provided at both ends of the car sill main body 16. Alternatively, the car sill guide 17 may be provided at at least one end of the car sill main body 16.

[0039] The car sill guide 17 extends throughout the opening and closing stroke of the car door assembly 8 in a direction away from the car door assembly 8. The sliding direction of the car door 7 is determined by the car sill guide 17. Furthermore, the car sill guide 17 guides the opening and closing of the car door assembly 8 by sliding the door shoe 19.

[0040] Similar to the case where the car door 7 is guided by the car sill body 16 during opening and closing, the car door 7 is also guided by the car sill guide 17 during opening and closing. Furthermore, when the car door 7 is a single door, i.e., when the car door 7 is a single-leaf car door assembly 8, the car sill guide 17 is located at one end of the car sill 15. The structure of the car door 7 is not limited to this; it can also be a structure with two or more car doors 7 on each side, and the same applies in other embodiments.

[0041] Figure 4 yes Figure 3 A cross-sectional view at point AA. (See example) Figure 4 As shown, the car sill guide 17 is composed of car sill guide members 17A. The car sill guide 17 at one end of the car sill 15 is composed of two car sill guide members 17A. When viewed from the vertical direction, the cross-section of the car sill guide member 17A is L-shaped.

[0042] The car sill body 16 is composed of a car sill body 16A. The car sill guide 17A includes a fixing part fixed to the car sill body 16A and a guide part for guiding the car door 7. The guide part extends from the fixing part in the direction away from the car door 7 along the opening and closing direction of the car door assembly 8. The car sill guide 17A is fixed to the car sill body 16A by fastening the fixing part to the car sill body 16A with bolts B (omitted in later figures). The car sill guide 17A only needs to have a fixing part fixed to the car sill body 16A and a guide part for guiding the car door 7; the cross-sectional shape does not have to be L-shaped. Furthermore, the method of fixing the car sill guide 17A to the car sill body 16A is not particularly limited as long as it does not obstruct the guidance of the car door 7 when it is opening and closing.

[0043] The car sill guide 17A can be manufactured, for example, by bending a metal sheet. Thus, the fixing part and the guiding part of the car sill guide 17A can be constituted by a single component. If the cross-section of the car sill guide 17A is L-shaped, it is easier to manufacture by bending a metal sheet, and therefore this is preferred. Furthermore, the car sill guide 17A has two pieces arranged to clamp the door shoe 19 in the front-rear direction. Additionally, two car sill guides 17A are provided at each of the two ends of the car sill body 16A.

[0044] like Figure 4As shown, the car sill guide 17 is configured to form an airflow channel in the vertical direction of the hoistway when the car sill 15 is viewed from the vertical direction. That is, the car sill guide 17 is configured such that the sum of the cross-sectional areas of the car sill main body 16 and the car sill guide 17 when the car sill 15 is viewed from the vertical direction is less than the cross-sectional area of ​​the car sill main body 16 when the car sill main body 16 extends to the end of the car sill guide 17.

[0045] By configuring the car sill guide section 17 in this way, the airflow area around the car sill guide section 17 is increased. When the elevator moves, the car sill 15 approaches the landing sill 22, causing air turbulence and noise. However, by providing the car sill guide section 17 of this embodiment, the airflow area around the car sill guide section 17 is increased, thus reducing the noise caused by air turbulence when the car sill 15 approaches the landing sill 22. As a result, the quietness inside the car 1 can be improved.

[0046] Furthermore, the entire length of the car sill body 16 extends within the width of the car door 7. This allows for easy passenger boarding and alighting, reduces material usage by setting the entire length to the width of the car door 7, and simplifies manufacturing, thus lowering production costs. The entire length of the car sill body 16 only needs to extend within approximately the width of the car door 7; it does not need to be exactly equal to the width of the car door assembly 8.

[0047] Next, use Figure 5 and Figure 6 The sill of floor gate 9 is explained. Figure 5 This is a diagram showing the perimeter of the landing door when viewed from the landing side, specifically the landing door assembly 10. (Example) Figure 5 As shown, the upper part of the landing door 9 is connected to the hanger plate 11B. A hanger roller 12B is provided on the hanger plate 11B. The hanger roller 12B is mounted on the hanger housing 13B. The hanger housing 13B has a door track 14B, and the hanger roller 12B can move left and right along the door track 14B.

[0048] A landing sill 22, constituting an elevator door sill 100, is provided at the lower part of the landing door assembly 10. The landing sill 22 guides the opening and closing of the landing door 9 of the landing door assembly 10. The landing sill 22 consists of a landing sill body 23 and a landing sill guide 24. The landing sill body 23 can be manufactured, for example, by cutting or extruding a metal block, or by other known methods.

[0049] The landing sill body 23 extends along the opening and closing direction of the landing door assembly 10. A door shoe 19, serving as a sliding member, is provided at the lower part of the landing door assembly 10, and slides along the landing sill body 23 when the landing door 9 is opened or closed. The door shoe 19 is, for example, located at the lower end of the landing door assembly 10. The landing sill body 23 has a groove 20 that guides the opening and closing of the landing door assembly 10 by allowing the door shoe 19 to slide. In other words, the sliding direction of the landing door 9 is determined by the movement of the door shoe 19 along the groove 20 of the landing sill body 23.

[0050] The main body 23 of the landing sill extends approximately across the width of the landing door 9. This allows for easy passenger boarding and alighting, and by setting the total length to the width of the landing door 9, manufacturing is simplified, reducing the amount of material used and thus lowering production costs.

[0051] The landing sill guide 24 constitutes the guide for the elevator door sill. The landing sill guide 24 is provided at both ends of the landing sill main body 23. Alternatively, the landing sill guide 24 may be provided at at least one end of the landing sill main body 23.

[0052] The landing sill guide 24 extends horizontally away from the landing door device 10 throughout its opening and closing stroke. The landing sill guide 24 determines the sliding direction of the landing door 9. Furthermore, the landing sill guide 24 guides the opening and closing of the landing door device 10 by sliding the door shoe 19.

[0053] Similar to the case where the car door 7 is guided by the car sill body 16 during opening and closing, the landing door 9 is guided by the landing sill guide 24 during opening and closing. Furthermore, when the landing door 9 is a single door, i.e., when the landing door 9 is a single-leaf landing door device 10, the landing sill guide 24 is located at one end of the landing sill 22. The structure of the landing door 9 is not limited to this; it can also be a structure with two or more landing doors on each side, and the same applies to other embodiments.

[0054] Figure 6 yes Figure 5 A cross-sectional view at point AA. (See example) Figure 6 As shown, the landing sill guide section 24 is composed of landing sill guide members 24A. The landing sill guide section 24 at one end of the landing sill 22 is composed of two landing sill guide members 24A. When viewed from the vertical direction, the cross-section of the landing sill guide member 24A is L-shaped.

[0055] Similar to the case where the landing door 9 is guided by the landing sill body 23 during opening and closing, the landing door 9 is also guided by the landing sill guide 24A during opening and closing. Furthermore, in the case where the landing door 9 is a single door, i.e., in the case where the landing door 9 is a single-leaf landing door device 10, the landing sill guide 24A is provided at one end of the landing sill 22. The structure of the landing door 9 is not limited to this; it can also be a structure with two or more landing doors on each side, and the same applies in other embodiments.

[0056] The landing sill main body 23 is composed of a landing sill main body 23A. The landing sill guide 24A has a fixing part that is fixed to the landing sill main body 23A and a guide part that guides the landing door 9. The guide part extends from the fixing part in a direction away from the landing door 9 along the opening and closing direction of the landing door device 10. The landing sill guide 24A is fixed to the landing sill main body 23A by fastening the fixing part to the landing sill main body 23A with, for example, bolts (not shown). The landing sill guide 24A only needs to have a fixing part that is fixed to the landing sill main body 23A and a guide part that guides the landing door 9, and the shape of the cross section does not have to be L-shaped. In addition, the method of fixing the landing sill guide 24A to the landing sill main body 23A is not particularly limited as long as it does not obstruct the guidance of the landing door 9 when it is opened and closed.

[0057] like Figure 6 As shown, the landing sill guide section 24A is configured to form an airflow channel in the vertical direction of the shaft when the landing sill 22 is viewed from the vertical direction. That is, the landing sill guide section 24 is configured such that the sum of the cross-sectional areas of the landing sill main body 23 and the landing sill guide section 24 when the landing sill 22 is viewed from the vertical direction is less than the cross-sectional area of ​​the landing sill main body 23 when the landing sill main body 23 extends to the end of the landing sill guide section 24.

[0058] By configuring the landing sill guide section 24 in this way, the airflow area around the landing sill guide section 24 is increased. When the elevator moves, the car sill 15 approaches the landing sill 22, causing air turbulence and noise. However, by providing the landing sill guide section 24 of this embodiment, the airflow area around the landing sill guide section 24 is increased, thus reducing the noise caused by air turbulence when the car sill 15 approaches the landing sill 22. As a result, the quietness inside the car can be improved.

[0059] As described above, in this embodiment, the sill of the elevator door equipped with a car sill guide 17 and a landing sill guide 24 has been explained. However, it is sufficient to install either the car sill guide 17 or the landing sill guide 24 on the elevator door sill 100. This can reduce the noise caused by air turbulence when the car sill 15 and the landing sill 22 approach each other. Furthermore, by installing the car sill guide 17 only in the car, compared to installing the landing sill guide 24 only at the landing, the noise caused by air turbulence when the car sill 15 and the landing sill 22 approach each other can be reduced at a lower cost. As explained in this embodiment, by providing the car sill guide 17 and the landing sill guide 24, the quietness inside the car can certainly be further improved.

[0060] Furthermore, while the car sill guide section 17 and the landing sill guide section 24 are L-shaped guide members, they are not limited to this. Various shapes can be adopted as long as they can increase the airflow area around the car sill guide section 17 and the landing sill guide section 24. In addition, by providing ribs to the guide members of each guide section, the strength against loads acting on the guide section in the vertical direction can be improved.

[0061] Implementation Method 2

[0062] The sill 100 of the elevator door in Embodiment 2 will be described. Figure 7 This is a partial top view showing the car sill 15 of Embodiment 2. Furthermore, Figure 8 This is a partial view of the front view of the car sill 15 according to Embodiment 2.

[0063] In the following description, we will mainly describe the structures that are different from those in Embodiment 1, and appropriately omit the descriptions of the structures that are the same as those in Embodiment 1. The car sill 15 of Embodiment 2 differs from that of Embodiment 1 in that the car sill guide 17 has an inclined plate 26.

[0064] like Figure 7 As shown, the car sill 15 is composed of a car sill main body 16 and a car sill guide 17. The structure of the car sill main body 16 is the same as in Embodiment 1, so the description is omitted. The car sill guide 17 has a plurality of inclined plates 26. The plurality of inclined plates 26 are disposed between two car sill guides 17A.

[0065] like Figure 8As shown, the multiple inclined plates 26 are inclined away from the car door 7 when viewed from the landing side of the car door assembly. By arranging the inclined plates 26 in this way, the airflow around the car sill can be guided away from the car along the inclined plates 26 when the car 1 descends, reducing the collision noise generated by the airflow colliding with the car during descent. Furthermore, by arranging the inclined plates 26, the rigidity of the car sill guide 17 can be improved. This helps to suppress deformation of the car sill 15 due to vertical loads acting on it.

[0066] The tilting plate 26 is positioned below the lower end of the groove 20 of the car sill body 16, such that its upper end does not interfere with the door shoe 19. Furthermore, it is not necessary to provide multiple tilting plates 26; by providing at least one tilting plate 26, the airflow around the car sill 15 during car 1 descent can be guided along the tilting plate 26 in a direction away from the car 1. Moreover, it is not necessarily required that the upper end of the tilting plate 26 be positioned below the lower end of the groove 20 of the car sill body 16. In this case, it is sufficient to provide the tilting plate 26 only at a position outside the travel width of the car door 7 during opening and closing.

[0067] The inclined plate 26 can be configured to connect two car sill guides 17A. The inclined plate 26 can be, for example, formed by welding a metal plate to the two car sill guides 17A. Alternatively, the inclined plate 26 can be formed by making a cut in the car sill guide 17A, which is formed from a single component, and then bending it. In this case, the number of components in the car sill guide 17 can be reduced, thus lowering costs.

[0068] Figure 9 This is a partial top view showing the car sill 15 and the landing sill 22. In this embodiment, the same inclined plate 26 as that of the car sill 15 is also provided in the landing sill guide section 24 of the landing sill 22. The inclined plate 26 provided in the landing sill guide section 24 can utilize the same structure as the inclined plate 26 of the landing sill guide section 24 described above, therefore its description is omitted. Thus, by also providing the inclined plate 26 in the landing sill guide section 24, the airflow can be guided away from the car 1, thereby further reducing the collision noise caused by the air colliding with the car 1.

[0069] Implementation Method 3

[0070] The sill 100 of the elevator door in Embodiment 3 will be described. Figures 10 to 12 This is a partial view of the front view of the car sill 15 according to embodiment 3.

[0071] In the following description, we will mainly describe the structures that are different from those in Embodiment 1 and Embodiment 2, and appropriately omit the description of the structures that are the same as those in Embodiment 1 and Embodiment 2. The car sill 15 of Embodiment 3 has a rotation axis 27 on the inclined plate 26 provided in the car sill guide 17, and is configured to be able to rotate through the rotation axis 27, which is different from the structures of other embodiments.

[0072] Figure 10 This is a partial front view showing the car sill 15 with the car 1 in a stopped state. Figure 11 This is a partial front view showing the car sill 15 with the car 1 in the raised position. Figure 12 This is a partial view of the front view showing the car sill 15 with the car 1 in a lowered position. Furthermore, in Figure 11 as well as Figure 12 The diagram schematically illustrates the direction of airflow (airflow) during the movement of the car 1. Multiple inclined plates 26 are provided in the car sill guide section 17. Each inclined plate 26 has a rotation shaft 27 at its upper end. That is, each of the multiple inclined plates 26 has a rotation shaft 27 at its upper end.

[0073] like Figure 10 As shown, the tilting plate 26 is configured to tilt in the direction opposite to the car door 7 when the car 1 stops. The tilting plate 26 can be configured, for example, to tilt in the direction of the car 1 when it stops via a force-applying body 28 such as a spring or magnet. In this embodiment, a spring is provided as the force-applying body 28. The tilting plate 26 maintains its tilted position by the elastic force of the spring.

[0074] like Figure 11 As shown, the tilting plate 26 experiences wind pressure due to the airflow from top to bottom when the car 1 rises. Consequently, the tilting plate 26 rotates clockwise about the rotation axis 27, and the spring (not shown) connected to the tilting plate 26 extends, stopping the tilting plate 26 in a vertical position at 90 degrees relative to the horizontal direction. The tilting plate 26 maintains its vertical position as the car 1 rises because the wind force from the air and the elastic force of the spring are balanced. Therefore, when the car 1 rises, the tilting plate 26 guides the airflow downwards, thus suppressing the airflow towards the car that occurs when the tilting plate 26 is tilted, reducing the collision noise caused by the air colliding with the car. Furthermore, the car sill guide 17 may also include a locking member 29 for locking the tilting plate 26. This allows the tilting plate 26 to be locked in a vertical position, preventing rotation caused by the wind force from the air. The locking member 29 may, for example, be made of metal.

[0075] like Figure 12As shown, the tilting plate 26 maintains an inclined position towards the end of the car sill 15 when the car 1 descends. As a result, when the car 1 descends, the airflow around the car sill 15 can be guided along the tilting plate 26 in a direction away from the car, which can reduce the collision noise generated by the air colliding with the car 1 in the direction of the car.

[0076] The car sill guide 17 includes a locking member 29 that locks the rotation of the tilting plate 26. When the car 1 descends, the tilting plate 26 rotates about the rotation axis 27 due to air pressure from the air flowing upwards. However, the rotation of the tilting plate 26 is locked by the locking member 29 provided on the car sill guide 17. That is, the angle at which the tilting plate 26 tilts due to its rotation can be adjusted by adjusting the position of the locking member 29. This further reduces the collision noise generated by the air colliding with the car 1.

[0077] The embodiments of this disclosure have been described above. However, the sill 100 of the elevator door in this disclosure is not limited to the manner described in embodiments 1 to 3, but represents only a part of the content of this disclosure. The sill 100 of the elevator door in this disclosure can also be combined with other known technologies, and can also omit or modify a part of the structure without departing from the spirit of this disclosure, such as by appropriate combination.

Claims

1. A door sill of an elevator door that guides opening and closing of a door device provided in an elevator, comprising: a main body portion that extends in an opening and closing direction of the door device and has a groove that guides opening and closing of the door device by sliding a sliding member provided in a lower portion of the door device; and a guide portion that extends from at least one end portion of the main body portion in a direction away from the door device throughout an opening and closing stroke of the door device to guide opening and closing of the door device by sliding the sliding member, wherein a sum of cross-sectional areas of the main body portion and the guide portion when the door sill is viewed from a vertical direction is smaller than a cross-sectional area of the main body portion when the main body portion extends to an end portion of the guide portion, the door sill of the elevator door comprises a car door sill that guides a car door provided in a car door device of a car, the car door sill comprises a car door sill main body portion that guides opening and closing of the car door device, and a car door sill guide portion that extends from at least one end portion of the car door sill main body portion in a direction away from the car door device throughout an opening and closing stroke of the car door device to guide opening and closing of the car door device, wherein a sum of cross-sectional areas of the car door sill main body portion and the car door sill guide portion when the car door sill is viewed from a vertical direction is smaller than a cross-sectional area of the car door sill main body portion when the car door sill main body portion extends to an end portion of the car door sill guide portion, and the car door sill guide portion comprises an inclined plate that inclines in a direction away from the car door when the door device is viewed from a landing side.

2. The door sill of the elevator door according to claim 1, wherein the main body portion extends in a range of a lateral width of the door device in the opening and closing direction of the door device.

3. The door sill of the elevator door according to claim 1 or 2, wherein the guide portion comprises a fixed portion that is fixed to an end portion of the main body portion, and a guide portion that extends from the fixed portion in the opening and closing direction of the door device, and a cross section of the guide portion when the door sill is viewed from a vertical direction is in an L shape.

4. The door sill of the elevator door according to claim 1, wherein the door sill of the elevator door further comprises a landing door sill that guides a landing door provided in a landing door device of a landing, the landing door sill comprises a landing door sill main body portion that guides opening and closing of the landing door device, and a landing door sill guide portion that extends from at least one end portion of the landing door sill main body portion in a direction away from the landing door device throughout an opening and closing stroke of the landing door device to guide opening and closing of the landing door device, and a sum of cross-sectional areas of the landing door sill main body portion and the landing door sill guide portion when the landing door sill is viewed from a vertical direction is smaller than a cross-sectional area of the landing door sill main body portion when the landing door sill main body portion extends to an end portion of the landing door sill guide portion. wherein 5. The door sill of the elevator door according to claim 1, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The car sill guide portion has a plurality of the inclined plates.

6. The sill of an elevator door according to claim 1 or 5, wherein The inclined plate has a rotation axis and is rotatable about the rotation axis, When the car is in a stopped state and a descending state, the inclined plate assumes a posture inclined in a direction away from the car door when the door device is viewed from the landing side, When the car is in an ascending state, the inclined plate is rotated about the rotation axis in a direction away from the car door by wind pressure due to air flowing around the car sill guide portion.

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