Elevator with hidden sill

Abstract

The present invention relates to an elevator with a hidden sill in the field of elevator equipment. Through a sliding wheel and a piston cylinder linked with an elevator door panel, when the elevator door is opened, the elevator door panel drives the sliding wheel to roll, and the sliding wheel drives the piston cylinder to generate a pulse airflow through a transmission component. The piston cylinder sprays the adhered floating dust in the sliding cavity of the elevator sill through nozzles arranged on both sides of the sliding wheel, and the floating dust accumulated in the sliding cavity of the sill is efficiently cleaned, which effectively solves the problem that the floating dust in the shaft adheres to the inner wall of the sliding cavity and is squeezed into a plate agglomerate by the sliding wheel, affecting the opening and closing of the elevator door panel, effectively reduces the shaking and noise when the elevator door panel is opened, and at the same time reduces the wear of the supporting wheel component, thereby increasing the service life.

Description

Technical Field

[0001] The invention relates to an elevator sill, in particular to an elevator with a hidden sill applied in the field of elevator equipment. Background Art

[0002] As an important part of the elevator system, the elevator sill mainly includes the floor door sill on the side of the floor door and the car sill on the side of the car. It bears the key task of opening and closing the elevator door panels, and mainly plays the role of guiding, limiting and supporting the inner and outer door panels of the elevator. However, in daily use, various dust and impurities are often easily dropped into the sill, posing a hidden danger to the normal operation of the elevator. Although these tiny dust and impurities seem insignificant, when accumulated, they may cause the elevator door panels to open and close unsmoothly or even get stuck, causing inconvenience to passengers. In serious cases, it may also affect the overall safety of the elevator.

[0003] In order to solve the problem that the sill is easy to hide dust and impurities, the existing elevator sill adopts a hidden sill, and the sliding groove used for guiding the sill is set on the side wall or the inner bottom wall of the sill to reduce the entry of dust and impurities. However, since the elevator car moves up and down in the shaft, there is a lot of floating dust in the shaft. More floating dust is easily adsorbed in the sliding groove on the side wall or the inner bottom wall of the sill, and it is easy to form a plate agglomeration under the extrusion of the sliding block or the mounting wheel at the lower end of the elevator door panel, affecting the opening and closing of the elevator door. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the sliding groove of the hidden sill of the existing elevator is easily adhered by the floating dust in the shaft and then squeezed into a plate agglomerate, which affects the opening and closing of the elevator door.

[0005] In order to solve the above problems, the present invention provides an elevator with a hidden sill, comprising a car installed in a shaft and a car door installed at the front side of the car, and each floor is equipped with a landing door matched with the car door; the lower end of the car door is slidably connected to the car sill through a first supporting wheel assembly, and the lower end of the landing door is slidably connected to the landing door sill through a second supporting wheel assembly, the first supporting wheel assembly and the second supporting wheel assembly have the same structure and are arranged oppositely, and the car sill and the landing door sill have the same structure and are arranged oppositely;

[0006] The first supporting wheel assembly includes a mounting plate fixedly connected to the car door by bolts, the lower part of the mounting plate extends to the inner side of the car sill and is rotatably connected to a sliding wheel through a wheel axle, the sliding wheel is nested in a sliding cavity opened at the lower part of the car sill, the outer end of the wheel axle is connected to an eccentric groove disk mounted on the mounting plate through a transmission gear set, the eccentric groove disk is clamped with a piston, and a piston cylinder fixedly connected to the mounting plate is sleeved on the outer side of the piston, the transmission gear set includes a plurality of groups of spur gears with a radius gradually decreasing from bottom to top, each spur gear and the eccentric groove disk are rotatably connected to the inner wall of the mounting plate through a mounting shaft, the upper part of the piston is provided with a clamping frame integrally formed therewith, the clamping frame is clamped in the traction groove of the eccentric groove disk, the piston cylinder is fixedly connected to the inner wall of the mounting plate through a mounting seat, and the car door rolls in the car sill, the eccentric groove disk is driven to rotate by the wheel axle and the transmission gear set, and the eccentric groove disk drives the piston to move vertically back and forth in the piston cylinder;

[0007] The bottom of the piston cylinder is connected to an exhaust pipe through a one-way valve, and both sides of the piston cylinder are connected to a group of exhaust pipes through a one-way valve. The outer ends of the exhaust pipes are connected to nozzles extending into the sliding cavity. The piston cylinder draws external air into the exhaust pipe and compresses it, and then injects it into the nozzle from the exhaust pipe. The pulsed airflow ejected from the nozzle sprays the inner wall of the sliding cavity.

[0008] In the above-mentioned elevator with a hidden sill, a pulsed airflow is generated by the sliding wheel and piston cylinder linked with the door panel to spray the sliding cavity, thereby preventing the accumulated floating dust from being squeezed into a plate agglomerate to affect the opening and closing of the elevator door panel.

[0009] As a further improvement of the present application, the nozzles on both sides are connected to the air outlet pipe through a rotating joint, and a torsion spring is nested in the rotating joint. The torsion spring on one side makes the nozzle on one side face the bottom plate of the sliding cavity when not affected by external force, and the torsion spring on the other side makes the nozzle on the other side face the top plate of the sliding cavity when not affected by external force. The nozzle is fixedly connected to a toggle rod on the inner side of the sliding wheel, and a group of toggle columns cooperating with the toggle rod are fixedly connected to the side wall of the sliding wheel. The toggle columns that make circular motion with the sliding wheel squeeze the toggle rods on both sides to make them rotate in opposite directions, and the toggle rods drive the nozzles to swing in opposite directions, thereby realizing reciprocating blowing of the nozzles.

[0010] As a further improvement of the present application, a group of mutually abutting sealing strips are installed at relative positions on the upper parts of the car sill and the floor door sill, and both ends of the sealing strip on one side of the car sill are fixed to the inner wall of the car sill by bolts, and the mounting plate on one side of the car sill is nested on the inner side of the sealing strip, and both ends of the sealing strip on the side of the floor door sill are also fixed on the inner wall of the floor door sill and on the outer side of the mounting plate on the side of the floor door sill.

[0011] As a further improvement of the present application, the car sill is fixedly connected to the car by bolts, and the floor door sill is fixedly connected to the inner wall of the shaft by bolts; the car sill is a strip-track structure, and an inner concave cavity for accommodating a mounting plate is provided at the lower part of the car sill, the sliding cavity is connected to the inner concave cavity and is located on the inner side of the inner concave cavity, and the cross-section of the mounting plate is H-shaped; the bottom plate of the sliding cavity is a horizontal plane, and the car sill is located on the inner side of the sliding cavity as a slope.

[0012] As a further improvement of the present application, the nozzle is L-shaped, and the air outlet of the nozzle is located in the middle of the sliding wheel travel path.

[0013] As a further improvement of the present application, the sealing strip is made of elastic rubber material, the cross-section of the sealing strip is an outwardly convex semicircular shape, a cavity is provided inside the sealing strip along its length direction, the cross-section of the cavity is a vertical ellipse, and rounded corners are provided on both sides of the upper part of the mounting plate.

[0014] As a further improvement of the present application, a flexible magnetic strip arranged along the length direction of the sealing strip is embedded in the inner side of the cavity of the sealing strip, and the car sill and the floor door sill are both made of ferromagnetic materials. Beneficial Effects

[0015] The present invention uses a sliding wheel and a piston cylinder linked with the elevator door panel. When the elevator door is opened, the elevator door panel drives the sliding wheel to roll, and the sliding wheel drives the piston cylinder to generate a pulse airflow through a transmission component. The piston cylinder sprays the adhered floating dust in the sliding cavity of the elevator sill through nozzles arranged on both sides of the sliding wheel, so as to efficiently clean the floating dust accumulated in the sliding cavity of the sill, effectively solve the problem that the floating dust in the shaft adheres to the inner wall of the sliding cavity and is squeezed into a plate agglomerate by the sliding wheel, which affects the opening and closing of the elevator door panel, effectively reduces the shaking and noise when the elevator door panel is opened, and at the same time reduces the wear of the supporting wheel assembly, thereby increasing the service life.

[0016] The present invention uses a rotary joint connecting the nozzle and the air outlet pipe and a torsion spring installed in the rotary joint. When the nozzle is spraying, a toggle column rotating with a sliding wheel is used to toggle a toggle rod connected to the nozzle, so that the nozzle swings up and down for spraying, thereby increasing the coverage of the spraying airflow and improving the spraying cleaning effect.

[0017] The present invention fills and seals the gap between the car sill and the floor door sill by installing a group of sealing strips in the gap between the car sill and the floor door sill, thereby reducing the dust generated during spray cleaning from floating into the car or the lobby through the gap between the car sill and the floor door sill; by using the sealing strips to fill and seal the gap between the car sill and the floor door sill, the possibility of impurities or items carried by passengers falling into the shaft is reduced, thereby improving the safety and convenience of use.

[0018] The present invention provides a sealing strip with a cavity having a vertical elliptical cross-section and a flexible magnetic strip embedded in the sealing strip, so that the sealing strip is closely attached to the inner wall of the sill and undergoes controlled longitudinal deformation when squeezed by a sliding mounting sheet, thereby improving the sealing effect of the sealing strip on the gap between the car sill and the floor door sill. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation of the elevator and shaft in this application;

[0020] Figure 2 for Figure 1 A schematic diagram of a transverse cross-sectional structure;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 This is a schematic diagram of the assembly of the car door and the car sill in this application;

[0023] Figure 5 For this application Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 6 For this application Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the mounting plate in this application;

[0026] Figure 8 This is a schematic diagram of the assembly of the sliding wheel and the piston cylinder in this application;

[0027] Fig. 9 This is a schematic diagram of the transmission state of the sliding wheel and the piston cylinder in this application;

[0028] Fig.10 A schematic diagram of the flow of the jet airflow of the present application;

[0029] Fig.11 for Figure 8 A horizontal cross-sectional schematic diagram of

[0030] Fig.12 for Fig.11 Schematic diagram of the enlarged structure at D in the middle;

[0031] Fig.13 It is a transmission diagram of the toggle lever and the toggle column in this application;

[0032] Fig.14 This is a schematic diagram of the assembly of the sealing strip and the car sill in this application;

[0033] Fig.15 is a cross-sectional view of the sealing strip in this application;

[0034] Fig.16 This is a schematic diagram of the extrusion state of the sealing strip in this application;

[0035] Fig.17 It is a schematic diagram of the extrusion state of the installation sheet on the sealing strip in this application.

[0036] Description of the numbers in the figure:

[0037] 1. Shaft; 2. Car; 3. Car door; 4. Landing door; 5. Car sill; 501. Inner concave cavity; 502. Sliding cavity; 503. Slope; 6. First support wheel assembly; 7. Landing door sill; 8. Second support wheel assembly; 9. Mounting plate; 901. Fillet; 10. Sliding wheel; 11. Wheel axle; 12. Transmission gear set; 13. Eccentric groove disk; 14. Piston; 15. Piston cylinder; 16. Exhaust pipe; 17. Exhaust pipe; 18. Nozzle; 19. Rotary joint; 20. Torsion spring; 21. Toggle rod; 22. Toggle column; 23. Sealing strip; 2301. Cavity; 24. Flexible magnetic strip. DETAILED DESCRIPTION

[0038] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] Figure 1-13An elevator with a hidden sill is shown, comprising a car 2 installed in a shaft 1 and a car door 3 installed at the front side of the car 2, and each floor is equipped with a floor door 4 that cooperates with the car door 3; the lower end of the car door 3 is slidably connected to the car sill 5 through a first supporting wheel assembly 6, and the lower end of the floor door 4 is slidably connected to the floor door sill 7 through a second supporting wheel assembly 8, the first supporting wheel assembly 6 and the second supporting wheel assembly 8 have the same structure and are arranged opposite to each other, and the car sill 5 and the floor door sill 7 have the same structure and are arranged opposite to each other; the first supporting wheel assembly 6 includes a mounting plate 9 fixedly connected to the car door 3 by bolts, the lower part of the mounting plate 9 extends to the inner side of the car sill 5 and is rotatably connected to a sliding wheel 10 through a wheel shaft 11, the sliding wheel 10 is nested in a sliding cavity 502 opened at the lower part of the car sill 5, and the outer end of the wheel shaft 11 is connected to the sliding cavity 502 through a transmission gear set 12 An eccentric groove disk 13 mounted on the mounting plate 9 is connected, and a piston 14 is clamped on the eccentric groove disk 13. A piston cylinder 15 fixedly connected to the mounting plate 9 is sleeved on the outer side of the piston 14. When the car door 3 rolls in the car sill 5, the eccentric groove disk 13 is driven to rotate through the wheel shaft 11 and the transmission gear set 12, and the eccentric groove disk 13 drives the piston 14 to move vertically back and forth in the piston cylinder 15; the bottom of the piston cylinder 15 is connected to an exhaust pipe 16 through a one-way valve, and the two sides of the piston cylinder 15 are connected to a group of exhaust pipes 17 through a one-way valve. The outer end of the exhaust pipe 17 is connected to a nozzle 18 extending into the sliding cavity 502. The piston cylinder 15 draws in external air through the exhaust pipe 16 and compresses it, and then injects it into the nozzle 18 from the exhaust pipe 17. The pulsed airflow ejected from the nozzle 18 sprays the inner wall of the sliding cavity 502 to clean the dust accumulated in the sliding cavity 502.

[0041] For details, please refer to Fig. 9 and Fig.10 , through the piston cylinder 15 linked with the sliding wheel 10, when the car door 3 and the floor door 4 move, a pulse airflow is generated to spray the channel sliding cavity 502 where the sliding wheel 10 slides, so as to clean the accumulated dust, and prevent the dust from agglomerating under the extrusion of the sliding wheel 10, causing the sliding wheel 10 to shake when rolling and drive the car door 3 or the floor door 4 to shake, affecting the closing of the car door 3 and the floor door 4 and generating closing noise, and long-term wear causing the door panels on both sides of the car door 3 and the floor door 4 to be misaligned.

[0042] Traditional elevators with hidden sills use a method of setting sliding blocks and sliding grooves on the side walls or bottom walls of the sill. The present invention is provided with a sliding wheel 10 and a piston cylinder 15 linked to the sliding wheel 10. During the movement of the car door 3 and the floor door 4, the piston cylinder 15 generates a pulse airflow to perform pulse spraying on the sliding cavity 502 where the sliding wheel 10 rolls, thereby preventing dust from accumulating and being squeezed into a plate agglomerate on the back of the sliding wheel 10, affecting the closing and opening of the door panel and making noise. This effectively solves the problem in the shaft 1 that floating dust is easily generated in the up and down movement of the car 2 and adheres to the sliding groove of the sill, thereby affecting the opening and closing of the door panel.

[0043] See also Figure 3 and Figure 6 The car sill 5 is fixedly connected to the car 2 by bolts, and the floor door sill 7 is fixedly connected to the inner wall of the shaft 1 by bolts; the car sill 5 is a strip track structure, and an inner concave cavity 501 for accommodating the mounting piece 9 is provided at the lower part of the car sill 5, and the sliding cavity 502 is communicated with the inner concave cavity 501 and is located on the inner side of the inner concave cavity 501, and the cross-section of the mounting piece 9 is H-shaped; the bottom plate of the sliding cavity 502 is a horizontal plane, and the car sill 5 is located on the inner side of the sliding cavity 502 as a slope portion 503, which is convenient for the discharge of the sprayed dust.

[0044] Specifically, it is convenient to accommodate the piston cylinder 15 and the transmission assembly.

[0045] See also Figure 8 The transmission gear set 12 includes multiple groups of spur gears with gradually decreasing radius from bottom to top. Each spur gear and the eccentric groove disk 13 are rotatably connected to the inner wall of the mounting plate 9 through a mounting shaft. The upper part of the piston 14 is provided with a clamping frame integrally formed therewith. The clamping frame is clamped in the traction groove of the eccentric groove disk 13. The piston cylinder 15 is fixedly connected to the inner wall of the mounting plate 9 through a mounting seat.

[0046] Specifically, by using multiple groups of spur gears with gradually decreasing radius from bottom to top, the rotation speed of the eccentric groove disk 13 is increased, the frequency of pulse airflow generation is increased, and the spraying effect is improved.

[0047] See also Figure 11-13 The nozzles 18 on both sides are connected to the air outlet pipe 17 through a rotating joint 19, and a torsion spring 20 is nested in the rotating joint 19. The torsion spring 20 on one side makes the nozzle 18 on one side face the bottom plate of the sliding chamber 502 when not subjected to external force, and the torsion spring 20 on the other side makes the nozzle 18 on the other side face the top plate of the sliding chamber 502 when not subjected to external force. The nozzle 18 is fixedly connected with a toggle rod 21 toward the inner side of the sliding wheel 10, and a group of toggle columns 22 cooperating with the toggle rod 21 are fixedly connected to the side wall of the sliding wheel 10. The toggle columns 22 that make circular motion with the sliding wheel 10 squeeze the toggle rods 21 on both sides to make them rotate in opposite directions. The toggle rod 21 drives the nozzle 18 to swing in opposite directions, thereby realizing the reciprocating spraying of the nozzle 18, improving the coverage of the pulse airflow, and fully spraying and cleaning the inner wall of the sliding chamber 502, thereby improving the dust cleaning effect.

[0048] See also Fig.12 The nozzle 18 is L-shaped, and the air outlet of the nozzle 18 is located in the middle of the travel path of the sliding wheel 10.

[0049] Specifically, the cleaning effect of the sliding cavity 502 is improved by using a nozzle 18 that swings back and forth and whose air outlet is located in the middle of the travel path.

[0050] See also Figure 8 The lower end of the exhaust pipe 16 is connected to a filter cylinder to filter the dust entering the piston cylinder 15.

[0051] Second implementation method:

[0052] Figure 14-17 An elevator with a hidden sill is shown. On the basis of the first embodiment, a group of mutually abutting sealing strips 23 are installed at relative positions on the upper parts of the car sill 5 and the floor door sill 7. The two ends of the sealing strip 23 on one side of the car sill 5 are fixed to the inner wall of the car sill 5 by bolts, and the mounting piece 9 on one side of the car sill 5 is nested on the inner side of the sealing strip 23. The two ends of the sealing strip 23 on the side of the floor door sill 7 are also fixed on the inner wall of the floor door sill 7 and on the outer side of the mounting piece 9 on the side of the floor door sill 7.

[0053] Specifically, the gap between the car sill 5 and the floor door sill 7 is filled by the mutually abutting sealing strips 23, so as to prevent the dust generated by the spraying of the nozzle 18 from floating into the car 2 or the lobby of each floor through the gap between the car sill 5 and the floor door sill 7; at the same time, the gap between the car sill 5 and the floor door sill 7 is filled by a group of sealing strips 23, so as to prevent dust or other flat debris (keys, mobile phones, cards) from falling into the shaft 1 through the gap between the car sill 5 and the floor door sill 7, thereby improving the safety of elevator use.

[0054] See also Figure 7 and Fig.15 The sealing strip 23 is made of elastic rubber material, and the cross section of the sealing strip 23 is a convex semicircular shape. A cavity 2301 is provided in the sealing strip 23 along its length direction, and the cross section of the cavity 2301 is a vertical ellipse. Rounded corners 901 are provided on both sides of the upper part of the mounting plate 9.

[0055] Specifically, the sealing strip 23 has a better filling and sealing effect on the gap between the car sill 5 and the floor door sill 7. At the same time, through the cavity 2301 with a vertical elliptical cross-section, the sealing strip 23 can be controllably deformed by horizontal compression when squeezed. In particular, when the upper part of the mounting plate 9 moves inside the sealing strip 23, the sealing strip 23 is squeezed outward. The cavity 2301 with a vertical elliptical cross-section enables the sealing strip 23 to still have better sealing when squeezed. The rounded corner 901 reduces scratches on the sealing strip 23 and reduces the gap at the intersection of the corners of the mounting plate 9 and the sealing strip 23.

[0056] See also Fig.15 The sealing strip 23 is located inside the cavity 2301 and a flexible magnetic strip 24 is embedded along the length direction of the sealing strip 23. The car sill 5 and the floor door sill 7 are both made of ferromagnetic materials.

[0057] For details, please refer to Fig.16 and Fig.17 The sealing strip 23 not only adheres to the side walls of the car sill 5 and the floor door sill 7 under the action of its own elasticity, but also adheres to the side walls of the car sill 5 and the floor door sill 7 under the action of the flexible magnetic strip 24. In particular, when the sealing strip 23 in the area where the mounting piece 9 slides over quickly adheres to the side walls of the car sill 5 and the floor door sill 7 under the action of magnetic adsorption, the sealing performance is improved.

[0058] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An elevator with a hidden sill, characterized in that: The invention comprises a car (2) installed in a shaft (1) and a car door (3) installed in front of the car (2), and each floor is provided with a landing door (4) which cooperates with the car door (3); the lower end of the car door (3) is slidably connected to a car sill (5) via a first supporting wheel assembly (6), and the lower end of the landing door (4) is slidably connected to a landing door sill (7) via a second supporting wheel assembly (8); the first supporting wheel assembly (6) and the second supporting wheel assembly (8) have the same structure and are arranged opposite to each other, and the car sill (5) and the landing door sill (7) have the same structure and are arranged opposite to each other; The first supporting wheel assembly (6) comprises a mounting plate (9) fixedly connected to the car door (3) by bolts, the lower part of the mounting plate (9) extending to the inner side of the car sill (5) and rotatably connected to a sliding wheel (10) via a wheel shaft (11), the sliding wheel (10) being nested in a sliding cavity (502) opened at the lower part of the car sill (5), the outer end of the wheel shaft (11) being connected to an eccentric groove disc (13) mounted on the mounting plate (9) via a transmission gear set (12), the eccentric groove disc (13) being clamped with a piston (14), the outer side of the piston (14) being provided with a piston cylinder (15) fixedly connected to the mounting plate (9), the transmission gear set (12) comprises a plurality of groups of spur gears with a radius gradually decreasing from bottom to top, each spur gear and the eccentric groove disc (13) are rotatably connected to the inner wall of the mounting plate (9) via a mounting shaft, a clamping frame integrally formed therewith is provided on the upper part of the piston (14), the clamping frame is clamped in the traction groove of the eccentric groove disc (13), the piston cylinder (15) is fixedly connected to the inner wall of the mounting plate (9) via a mounting seat, when the car door (3) rolls in the car sill (5), the eccentric groove disc (13) is driven to rotate via the wheel shaft (11) and the transmission gear set (12), and the eccentric groove disc (13) drives the piston (14) to move vertically back and forth in the piston cylinder (15); The bottom of the piston cylinder (15) is connected to an exhaust pipe (16) through a one-way valve, and both sides of the piston cylinder (15) are connected to a group of exhaust pipes (17) through a one-way valve. The outer ends of the exhaust pipes (17) are connected to nozzles (18) extending into the sliding chamber (502). The piston cylinder (15) draws in external air through the exhaust pipe (16), compresses the air, and injects the compressed air into the nozzles (18) from the exhaust pipes (17). The pulsed airflow ejected from the nozzles (18) sprays the inner wall of the sliding chamber (502). The nozzles (18) on both sides are connected to the air outlet pipe (17) through a rotating joint (19). A torsion spring (20) is embedded in the rotating joint (19). The torsion spring (20) on one side makes the nozzle (18) on one side face the bottom plate of the sliding chamber (502) when no external force is applied, and the torsion spring (20) on the other side makes the nozzle (18) on the other side face the top plate of the sliding chamber (502) when no external force is applied. A toggle rod (21) is fixedly connected to the inner side of the nozzle (18) facing the sliding wheel (10). A group of toggle columns (22) cooperating with the toggle rod (21) are fixedly connected to the side wall of the sliding wheel (10). The toggle columns (22) that make a circular motion with the sliding wheel (10) squeeze the toggle rods (21) on both sides to make them rotate in opposite directions. The toggle rods (21) drive the nozzle (18) to swing in opposite directions, thereby realizing reciprocating spraying of the nozzle (18); The lower end of the air extraction pipe (16) is connected to a filter cylinder for filtering dust entering the piston cylinder (15).

2. An elevator with a hidden sill according to claim 1, characterized in that: A group of mutually abutting sealing strips (23) are installed at relative positions on the upper parts of the car sill (5) and the landing door sill (7); two ends of the sealing strip (23) located on one side of the car sill (5) are fixed to the inner wall of the car sill (5) by bolts; the mounting piece (9) located on one side of the car sill (5) is nested inside the sealing strip (23); and two ends of the sealing strip (23) located on one side of the landing door sill (7) are also fixed to the inner wall of the landing door sill (7) and outside the mounting piece (9) located on one side of the landing door sill (7).

3. The elevator with a hidden sill according to claim 1, characterized in that: The car sill (5) is fixedly connected to the car (2) by means of bolts, and the landing door sill (7) is fixedly connected to the inner wall of the shaft (1) by means of bolts; the car sill (5) is a strip-shaped track structure, an inner concave cavity (501) for accommodating a mounting plate (9) is provided at the lower part of the car sill (5), a sliding cavity (502) is communicated with the inner concave cavity (501) and is located on the inner side of the inner concave cavity (501), and the mounting plate (9) has an H-shaped cross section; the bottom plate of the sliding cavity (502) is a horizontal plane, and the car sill (5) is located on the inner side of the sliding cavity (502) as a slope portion (503).

4. The elevator with a hidden sill according to claim 2, characterized in that: The sealing strip (23) is made of elastic rubber material, the cross section of the sealing strip (23) is in the form of a convex semicircle, a cavity (2301) arranged along its length direction is provided in the sealing strip (23), the cross section of the cavity (2301) is in the form of a vertical ellipse, and rounded corners (901) are provided on both sides of the upper part of the mounting plate (9); a flexible magnetic strip (24) arranged along the length direction of the sealing strip (23) is embedded inside the cavity (2301) of the sealing strip (23), and the car sill (5) and the landing door sill (7) are both made of ferromagnetic material.

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