Elevator door motor

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator door motor. Comprising an electromagnetic sliding block assembly connected with a car door of the elevator and used for driving the car door to reciprocate in the first direction; the driving part comprises an electromagnetic track and an electromagnetic enhancing part; the electromagnetic track extends in the first direction, and the electromagnetic enhancing piece is used for enhancing a magnetic field of the electromagnetic track in the second direction; when the driving part is powered on, the electromagnetic rail and the electromagnetic enhancing part can drive the electromagnetic sliding block assembly to move in a reciprocating mode in the length direction of the electromagnetic rail. The connecting assembly is used for connecting the electromagnetic sliding block assembly with the car door; and the control part is electrically connected with the driving part and is used for controlling the power-on or power-off of the driving part. The elevator door motor is stable in operation, quiet and free of disturbance.

Description

Technical Field

[0001] This application relates to the technical field of elevators, and particularly to an elevator door machine. Background Art

[0002] Traditional elevator door machines operate by mechanically driving the opening and closing of the car door. During the opening and closing operations, collisions and frictions between mechanical structures generate noise, resulting in noise pollution. Moreover, due to the frequent operation of the motor, the probabilities of motor failures and component wear increase, thereby affecting the normal operation and service life of the elevator. In addition, during the operation of the elevator car door, this mechanical driving method also causes the operation to be not smooth enough, resulting in phenomena such as shaking and bumping during the opening and closing of the car door, which not only reduces the riding comfort but also threatens the safety of passengers to a certain extent.

[0003] Therefore, there is an urgent need for an elevator door machine that operates smoothly and quietly without interference. Summary of the Utility Model

[0004] Based on this, it is necessary to provide an elevator door machine that operates smoothly and quietly without interference.

[0005] An elevator door machine includes:

[0006] An electromagnetic slider assembly, which is used to connect the car door of the elevator and can drive the car door to reciprocate along a first direction;

[0007] A driving component, including an electromagnetic track and an electromagnetic enhancer; the electromagnetic track extends along the first direction, and the electromagnetic enhancer is used to enhance the magnetic field of the electromagnetic track in a second direction; when the driving component is powered on, along the first direction, the electromagnetic track and the electromagnetic enhancer can drive the electromagnetic slider assembly to reciprocate; wherein, the first direction and the second direction are arranged at an angle;

[0008] A connecting component, which is used for connecting the electromagnetic slider assembly and the car door;

[0009] A control component, which is electrically connected to the driving component and is used to control the power on or off of the driving component.

[0010] In one embodiment, the electromagnetic enhancer includes a housing, a core body and a coil, and the core body and the coil are arranged in the housing; with the second direction as the axis, the coil is evenly wound around the core body.

[0011] In one embodiment, a plurality of electromagnetic enhancers are provided, and the plurality of electromagnetic enhancers are spaced apart along the first direction; the driving component includes a connecting structure, and adjacent two electromagnetic enhancers are connected to each other through the connecting structure.

[0012] In one embodiment, the connection structure includes a first plug-in member, a second plug-in member, a first conductive member, and a second conductive member. The first plug-in member and the second plug-in member are respectively disposed on two sides of the electromagnetic enhancement member, and one of two adjacent electromagnetic enhancement members is in plug-in fit with the second plug-in member of the other electromagnetic enhancement member through the first plug-in member; the first conductive member is disposed on the first plug-in member, and the second conductive member is disposed on the second plug-in member; when the first plug-in member and the second plug-in member are in plug-in fit, the first conductive member and the second conductive member are in abutting fit.

[0013] In one embodiment, the electromagnetic slider assembly includes a slider body, a sliding contact member, and an elastic member. The elastic member connects the slider body and the sliding contact member, and a side of the sliding contact member away from the elastic member is in sliding fit with the electromagnetic track.

[0014] In one embodiment, the connection assembly includes a first connecting plate and a second connecting plate. The first connecting plate is respectively connected to the electromagnetic slider assembly and the second connecting plate, and the second connecting plate is connected to the car door; a guide rail is provided on the back plate of the elevator door machine, and a pulley is provided on the second connecting plate. The pulley is in sliding fit with the guide rail.

[0015] In one embodiment, the elevator door machine further includes a door lock structure for driving the car door to remain in a closed state when the car door is closed; the door lock structure includes a first lock catch, a second lock catch, and an electromagnetic driver. Along the height direction of the car door, the first lock catch is disposed at the top of the car door, the second lock catch is disposed above the first lock catch, and the electromagnetic driver is disposed above the second lock catch and is electrically connected to the control component; when the electromagnetic driver is powered on, the electromagnetic driver can drive the second lock catch to move away from the first lock catch.

[0016] In one embodiment, the door lock structure further includes a pulling rope connected to a side of the second lock catch away from the first lock catch for driving the second lock catch to move away from the first lock catch.

[0017] In one embodiment, two first lock catches are provided, respectively disposed at the upper left corner and the upper right corner of two car doors; two triangular sliding catches are provided on a side of the second lock catch close to the first lock catch, and there is a distance between the two triangular sliding catches.

[0018] In one embodiment, two sets of electromagnetic tracks are provided. Along the height direction of the electromagnetic slider assembly, the two sets of electromagnetic tracks are respectively disposed on the upper and lower sides of the electromagnetic slider assembly; two sets of electromagnetic enhancement members are provided. Along the second direction, the two sets of electromagnetic enhancement members are respectively disposed on two sides of the electromagnetic slider assembly.

[0019] In one of the embodiments, the driving component further includes a housing, and the electromagnetic track, the electromagnetic enhancer, and the electromagnetic slider assembly are all disposed inside the housing; a notch groove is provided on one side of the housing close to the connecting component.

[0020] Compared with the prior art, the elevator door machine is provided with an electromagnetic track and an electromagnetic slider assembly. After being electrified, the electromagnetic track can drive the electromagnetic slider assembly to move, thereby driving the car door to open or close, avoiding the noise caused by the mechanical driving method, and realizing the quiet and undisturbed opening and closing of the car door. Secondly, by using the electromagnetic driving method, the setting of mechanical components is greatly reduced, the possibility of failure is reduced, and the operation is stable. The service life is extended, and the maintenance cost and maintenance frequency are reduced. The overall structure is also more compact, saving more space for the elevator, and making the layout of the car and the hoistway more reasonable and user-friendly. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the front view of the elevator door machine provided by the present application;

[0023] Figure 2 is the side view of the elevator door machine provided by the present application;

[0024] Figure 3 is the side view of the driving component of the elevator door machine provided by the present application;

[0025] Figure 4 is the schematic diagram of the electromagnetic enhancer of the elevator door machine provided by the present application;

[0026] Figure 5 is another schematic diagram of the electromagnetic enhancer of the elevator door machine provided by the present application;

[0027] Figure 6 is the left view of the electromagnetic enhancer of the elevator door machine provided by the present application;

[0028] Figure 7 is the right view of the electromagnetic enhancer of the elevator door machine provided by the present application;

[0029] Figure 8 is the combined diagram of the electromagnetic enhancer of the elevator door machine provided by the present application;

[0030] Figure 9It is a schematic diagram of the movement of the elevator door machine slider group provided by this application;

[0031] Figure 10 It is a cross-sectional view of the elevator door machine slider group provided by this application;

[0032] Figure 11 It is a schematic structural diagram of the door lock structure of the elevator door machine provided by this application;

[0033] Figure 12 It is a schematic structural diagram of the car door of the elevator door machine being locked through the door lock structure provided by this application;

[0034] Figure 13 It is a schematic structural diagram of the second lock catch moving upward to prepare for unlocking the car door in the elevator door machine provided by this application;

[0035] Figure 14 It is a schematic structural diagram of the car door and the door lock structure being unlocked in the elevator door machine provided by this application;

[0036] Figure 15 It is a schematic diagram of the elevator door machine electromagnetic slider assembly being affected by the Lorentz force;

[0037] Figure 16 It is a schematic diagram of the speed-time curve of the elevator door machine provided by this application;

[0038] Figure 17 It is a schematic diagram of the force-time curve of the elevator door machine provided by this application;

[0039] Figure 18 It is a schematic diagram of the current-time curve of the elevator door machine provided by this application;

[0040] Figure 19 It is a flowchart of the operation of the elevator door machine provided by this application.

[0041] Reference numerals: 1. Electromagnetic slider assembly; 11. Slider body; 12. Elastic member; 13. Sliding contact member; 14. Housing; 2. Driving component; 21. Electromagnetic track; 22. Electromagnetic enhancement member; 221. Housing; 222. Core; 223. Coil; 23. Connection structure; 231. First plug-in member; 232. Second plug-in member; 233. First conductive member; 234. Second conductive member; 24. Outer shell; 241. Notch groove; 3. Connection assembly; 31. First connecting plate; 32. Second connecting plate; 33. Pulley; 34. Guide rail; 4. Control component; 5. Door lock structure; 51. Limit switch; 52. First lock catch; 53. Second lock catch; 531. Triangular sliding catch; 54. Electromagnetic driver; 55. Pulling rope; 6. Back plate; 61. First stop bar; 62. Second stop bar. Detailed implementation manners

[0042] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0043] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the specification of the present application are for illustrative purposes only and do not represent the only implementation manner.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0045] In the present application, unless otherwise clearly specified and limited, the first feature may be in direct contact with the second feature "on" or "under" the second feature, or the first feature and the second feature may be in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the related listed items.

[0047] Please refer to Figures 1 to 19, this application provides an elevator door machine, which includes an electromagnetic slider assembly 1, a driving component 2, a connecting component 3, and a control component 4. Among them, the electromagnetic slider assembly 1 is connected to the car door of the elevator and is used to drive the car door to reciprocate in the first direction. The connecting component 3 is used for connecting the electromagnetic slider assembly 1 and the car door. The control component 4 is electrically connected to the driving component 2 and is used to control the energization or power-off of the driving component 2.

[0048] Specifically, the driving component 2 includes an electromagnetic track 21 and an electromagnetic enhancer 22. The electromagnetic track 21 extends along the first direction, and the electromagnetic enhancer 22 is used to enhance the magnetic field of the electromagnetic track 21 in the second direction. When the driving component 2 is energized, along the length direction of the electromagnetic track 21, the electromagnetic track 21 and the electromagnetic enhancer 22 can drive the electromagnetic slider assembly 1 to reciprocate. Among them, the first direction and the second direction are arranged at an angle.

[0049] It can be understood that according to the electromagnetic effect and Ampere's rule, a magnetic field will be generated around a conductor when an electric current passes through the conductor, and the magnetic field will change according to the change of the current direction. According to Lorentz force, when a charged particle moves in a magnetic field, it will be subjected to a force perpendicular to both the direction of motion and the direction of the magnetic field. Its magnitude is F = Bqvsinθ, where F is the Lorentz force, B is the magnetic induction intensity, q is the charge of the moving charge, v is the velocity of the charge, and θ is the angle between the velocity v and the magnetic field B direction. When the velocity v is perpendicular to the magnetic field B, the magnitude of the Lorentz force can be simplified to F = qvB. When the current increases, the corresponding B is the magnetic induction intensity, q is the charge of the moving charge, and v is the velocity of the charge, all of which will be enhanced.

[0050] From the above principles, it can be known that when the driving component 2 is energized, a loop is formed between the electromagnetic track 21 and the electromagnetic slider assembly 1. The electromagnetic track 21 and the electromagnetic enhancer 22 will generate a Lorentz force, which drives the electromagnetic slider assembly 1 to move along the electromagnetic track 21. And when a positive loop current and a reverse loop current are applied, the directions of the generated Lorentz forces are also opposite. Therefore, by applying loop currents in different directions, the electromagnetic slider assembly 1 can be controlled to reciprocate, driving the car door to open / close.

[0051] Secondly, by controlling the magnitude of the applied current, the current intensity of the electromagnetic track 21 and the magnetic field intensity generated by the electromagnetic enhancer 22 can be controlled, and then the intensity of the generated Lorentz force can be controlled, thereby controlling the moving speed of the electromagnetic slider assembly 1.

[0052] That is, when an electric current passes through the electromagnetic track 21, according to Ampere's law, a surrounding magnetic field will be generated around it. The magnitude and direction of the electric current directly determine the intensity and direction of the magnetic field. When the electric current increases, the intensity of the generated magnetic field will also increase accordingly. By changing the direction of the electric current, the direction of the magnetic field will also change. When the electromagnetic slider assembly 1 carries an electric current and is in an external magnetic field, it will be affected by the Lorentz force. According to the left-hand rule, the direction of the Lorentz force can be determined.

[0053] Through the reasonably designed electromagnetic track 21 and electromagnetic slider assembly 1 of the present application, after the electromagnetic track 21 is powered on, the Lorentz force can always be along the direction of the track, so as to drive the electromagnetic slider assembly 1 to slide along the track, so as to drive the car door to open or close. The noise caused by the mechanical drive method is avoided, and the quiet and undisturbed opening and closing of the car door are realized. By using the electromagnetic drive method, the setting of mechanical components is greatly reduced, the possibility of failure is reduced, and the operation is stable.

[0054] Furthermore, through the setting of the electromagnetic enhancer 22, the intensity of the magnetic field in the second direction on the electromagnetic track 21 is greatly increased, and then the intensity of the Lorentz force acting on the electromagnetic slider assembly 1 is enhanced, so that the movement of the electromagnetic slider assembly 1 is faster and smoother, improving the opening / closing speed of the car door and enhancing the elevator riding experience.

[0055] In one embodiment, the first direction is the direction of opening and closing the car door, the second direction is the width direction of the electromagnetic slider assembly 1, and the first direction and the second direction are perpendicular to each other.

[0056] Exemplarily, two sets of electromagnetic tracks 21 are provided. Along the height direction of the electromagnetic slider assembly 1, the two sets of electromagnetic tracks 21 are respectively arranged on the upper and lower sides of the electromagnetic slider assembly 1. Without affecting the compactness, by increasing the number of electromagnetic tracks 21, the generated magnetic field can be increased to increase the intensity of the Lorentz force acting on the electromagnetic slider assembly 1, so that the movement of the electromagnetic slider assembly 1 is faster and smoother, and the opening / closing speed of the car door is improved.

[0057] Further, the two sets of electromagnetic tracks 21 are respectively connected to a power source. The power source is electrically connected to the control component 4, and the control component 4 is used to control the power source to supply power or cut off power to the electromagnetic track 21, that is, the power on or off of the electromagnetic track 21.

[0058] Optionally, the electromagnetic track 21 is made of a high-strength and high-conductivity material, which can generate a magnetic field after being powered on. The specific type can be selected according to actual needs and will not be elaborated here.

[0059] Further, the electromagnetic enhancer 22 includes a housing 221, a core 222 and a coil 223. The core 222 and the coil 223 are both arranged in the housing 221, and with the second direction as the axis, the coil 223 is evenly wound around the core 222.

[0060] Exemplarily, the core 222 is an iron core. The housing 221 is made of an insulating material, and the specific type can be selected according to actual needs.

[0061] Optionally, the electromagnetic enhancement members 22 are arranged in two groups. Along the second direction, the two groups of electromagnetic enhancement groups are respectively arranged on both sides of the electromagnetic slider assembly 1. That is, on the front and rear sides in the width direction of the electromagnetic slider assembly 1.

[0062] In this way, without affecting the compactness, by increasing the number of the electromagnetic enhancement members 22, the magnetic field generated by them can be increased, so as to increase the intensity of the Lorentz force acting on the electromagnetic slider assembly 1, making the movement of the electromagnetic slider assembly 1 faster and smoother, and improving the opening / closing speed of the car door.

[0063] In one embodiment, a plurality of electromagnetic enhancement members 22 are arranged at intervals along the length direction of the electromagnetic track 21. The driving component 2 further includes a connecting structure 23, and adjacent two electromagnetic enhancement members 22 are connected to each other through the connecting structure 23.

[0064] In this way, the length of the electromagnetic enhancement member 22 is shorter, and the processing and assembly are easier. After the plurality of electromagnetic enhancement members 22 are connected to each other, the overall length is extended to match the length of the electromagnetic track 21, ensuring that there are electromagnetic enhancement members 22 in the entire length direction of the electromagnetic track 21 to enhance the magnetic field.

[0065] Specifically, the connecting structure 23 includes a first plug-in member 231, a second plug-in member 232, a first conductive member 233 and a second conductive member 234. Among them, the first plug-in member 231 and the second plug-in member 232 are respectively arranged on both sides of the electromagnetic enhancement member 22, and one of the adjacent two electromagnetic enhancement members 22 is in plug-in fit with the second plug-in member 232 of the other electromagnetic enhancement member 22 through the first plug-in member 231. The first conductive member 233 is arranged on the first plug-in member 231, and the second conductive member 234 is arranged on the second plug-in member 232. When the first plug-in member 231 and the second plug-in member 232 are in plug-in fit, the first conductive member 233 and the second conductive member 234 are in abutting fit.

[0066] In this embodiment, the first plug-in member 231 is arranged as a convex part, and the second plug-in member 232 is arranged as a groove adapted to the convex part. When the convex part is inserted into the groove, the plug-in fit is achieved, and the adjacent two electromagnetic enhancement members 22 are connected to each other.

[0067] Of course, it is not limited to this. In other embodiments, the first plug-in member 231 and the second plug-in member 232 can also adopt other structures. For example, the first plug-in member 231 is arranged as a groove, and the second plug-in member 232 is arranged as a convex part, as long as the plug-in fit can be satisfied.

[0068] In this embodiment, both the first conductive member 233 and the second conductive member 234 are conductive sheets, which can conduct electricity with each other and transfer current when they are in contact with each other. Both the first conductive member 233 and the second conductive member 234 are electrically connected to the core body 222, ensuring that the elongated electromagnetic enhancement member 22 formed by connecting and extending can form a complete current path. The first conductive member 233 or the second conductive member 234 located at the end is connected to the power source, and power is supplied to the electromagnetic enhancement member 22 through the power source.

[0069] Exemplarily, the conductive sheet is made of a conductive material, and the specific type can be selected according to actual needs.

[0070] Further, the electromagnetic slider assembly 1 includes a slider body 11, a sliding contact member 13, and an elastic member 12. The elastic member 12 connects the slider body 11 and the sliding contact member 13, and the side of the sliding contact member 13 away from the elastic member 12 is in sliding fit with the electromagnetic track 21.

[0071] It can be understood that during the process of the sliding contact member 13 sliding relative to the electromagnetic track 21, the sliding contact member 13 will be worn to a certain extent. The pressure exerted by the elastic member 12 on the sliding contact member 13 can just offset the distance generated by this part of the wear, ensuring that the sliding contact member 13 and the electromagnetic track 21 always remain in close contact, avoiding the situation where a current loop cannot be formed, and reducing the failure rate.

[0072] Exemplarily, the sliding contact member 13 is a carbon brush. Of course, it can also be selected according to actual needs. The elastic member 12 is a spring. Of course, it can also be selected according to actual needs.

[0073] Preferably, the connection between the sliding contact member 13 and the spring member is set as a detachable connection, such as snap connection, which is convenient for replacing the sliding contact member 13.

[0074] In this embodiment, the electromagnetic slider assembly 1 further includes a housing 14. The housing 14 covers the outside of the slider body 11, and openings are provided at positions corresponding to the sliding contact member 13 for the sliding contact member 13 to extend out. The sliding contact member 13 is in sliding fit with the inner wall of the opening, which plays a certain guiding role for the sliding contact member 13, avoiding the deformation of the elastic member 12 in the moving direction during the movement, and ensuring that the sliding contact member 13 always contacts the electromagnetic track 21.

[0075] Specifically, the connection assembly 3 includes a first connecting plate 31 and a second connecting plate 32. Among them, the first connecting plate 31 is connected to both the electromagnetic slider assembly 1 and the second connecting plate 32, and the second connecting plate 32 is connected to the car door. A guide rail 34 is provided on the elevator car, and a pulley 33 is provided on the second connecting plate 32. The pulley 33 is in sliding fit with the guide rail 34.

[0076] Further, the elevator door machine is provided with a back plate 6, and both the electromagnetic track 21 and the control component 4 are arranged on the back plate 6. The guide rail 34 is also arranged on the back plate 6 and extends along the moving direction of the car door. When the car door is opened or closed, the pulley 33 will roll along the guide rail 34, providing support for the car door while guiding the movement of the car door, improving the smoothness of the car door opening and closing and avoiding the generation of noise.

[0077] Exemplarily, the pulley 33 is installed on one side of the second connecting plate 32 corresponding to the inner side of the car door. The guide rail 34 is a bent groove directly formed by bending on the back plate 6 and is integrally formed with the back plate 6, which is convenient for processing.

[0078] In this embodiment, the elevator door machine further includes a door lock structure 5 for driving the car door to remain closed when the car door is closed. This enables the car door to be unable to be physically opened from inside the car after it is closed, preventing accidents caused by children accidentally pulling the door and improving safety.

[0079] Specifically, the door lock structure 5 includes a first lock catch 52, a second lock catch 53 and an electromagnetic driver 54. Along the height direction of the car door (i.e., the height direction of the electromagnetic slider assembly 1), the first lock catch 52 is arranged at the top of the car door, the second lock catch 53 is arranged above the first lock catch 52, and the electromagnetic driver 54 is arranged above the second lock catch 53. The electromagnetic driver 54 is electrically connected to the control component 4. When the electromagnetic driver 54 is powered on, the electromagnetic driver 54 can drive the second lock catch 53 to move away from the first lock catch 52, so that the second lock catch 53 is disengaged from the first lock catch 52. When the electromagnetic driver 54 is powered off, the second lock catch 53 moves downward under the action of gravity and forms a locking fit with the first lock catch 52.

[0080] Exemplarily, the electromagnetic driver 54 is connected to a power supply, and the control component 4 can control the power supply to supply power to or cut off the power of the electromagnetic driver 54. The electromagnetic driver 54 uses an electromagnetic relay.

[0081] Specifically, two first lock catches 52 are provided, which are respectively arranged at the upper left corner and the upper right corner of the two car doors. And preferably arranged on the second connecting plate 32 where the two car doors are connected, respectively arranged at the upper left corner and the upper right corner of the two second connecting plates 32. Preferably, it can be a triangular sliding catch. The second lock catch 53 is a metal lock catch, and two triangular sliding catches 531 are provided on the side of the second lock catch 53 close to the first lock catch 52, and there is a spacing between the two triangular sliding catches.

[0082] Understandably, during the closing process of the car door, the two first latches 52 approach each other and push the metal latch 91 upwards. After the car door is closed in place, the two first latches 52 are just located between the two triangular sliding latches of the second latch 53. At this time, the second latch 53 moves downwards under the action of gravity, and the two first latches 52 are snapped into the two triangular sliding latches of the second latch 53, realizing the locking of the first latch 52 and the second latch 53. At this time, the car door cannot be opened.

[0083] When the electromagnetic driver 54 is powered on, the electromagnetic driver 54 generates a magnetic force, adsorbing the second latch 53 to move upwards, and the two first latches 52 are disengaged from between the two triangular sliding latches of the second latch 53. At this time, the locking between them is released, and the car door can be opened.

[0084] Preferably, the door lock structure 5 further includes a pull rope 55. The pull rope 55 is connected to the side of the second latch 53 away from the first latch 52, and is used to drive the second latch 53 to move in a direction away from the first latch 52. In special situations such as power failure or the car door cannot be opened due to a malfunction, elevator rescue personnel can pull the pull rope 55 to drive the second latch 53 to move upwards to unlock and open the car door.

[0085] Exemplarily, the pull rope 55 is selected as a steel wire rope, which has a firm structure and a long service life.

[0086] Further, a first stop lever 61 and a second stop lever 62 are also provided on the back plate 6 of the elevator door machine. After the pull rope 55 is connected to the second latch 53, it extends to the outside of the back plate 6 and bypasses the first stop lever 61 and the second stop lever 62.

[0087] Preferably, the driving component 2 further includes a housing 24. The electromagnetic track 21, the electromagnetic enhancer 22, and the electromagnetic slider assembly 1 are all arranged inside the housing 24. A notch groove 241 is provided on the side of the housing 24 close to the connecting component 3. The first connecting plate 31 can pass through the notch groove 241 into the housing 24 and be connected to the housing 221 of the electromagnetic slider assembly 1.

[0088] Preferably, a limit switch 51 is provided on the back plate 6, and the limit switch 51 is electrically connected to the control component 4. The position of the limit switch 51 is set such that when the car door is fully closed, the first connecting plate 31 on the car door can just touch the limit switch 51.

[0089] Exemplarily, the limit switch 51 adopts a sensor.

[0090] In this way, when the car door is closed in place, the limit switch 51 is immediately touched, and then a signal that the car door is fully closed is sent to the control component 4, and the elevator starts to run again, avoiding the situation that the elevator starts to run when the car door is not fully closed.

[0091] The control component 4 is installed at the upper left corner of the backplane 6 or any installable position to control the operation of the entire door system. Optionally, the control component 4 can be a single-chip microcomputer, a PLC controller, etc. The type of power supply can be selected according to actual needs and will not be elaborated here.

[0092] Working principle: When a floor is selected inside the passenger car, the control component 4 receives the signal, controls the power supply to send a positive circuit current I+, and the driving component 2 is powered on. At the same time, the electromagnetic track 21 and the electromagnetic enhancer 22 generate a magnetic field, and under the action of the positive (door-closing direction) Lorentz magnetic force F+, the electromagnetic slider assembly 1 moves, driving the car door to close. The electromagnetic slider assembly 1 gradually accelerates to a stable speed V under the action of the positive Lorentz magnetic force. When the electromagnetic slider assembly 1 runs to the halfway point, the control component 4 controls the power supply to send a reverse circuit current I-, and at the same time, the electromagnetic track 21 and the electromagnetic enhancer 22 generate a reverse magnetic field, generating a reverse (door-opening direction) Lorentz magnetic force F-, driving the electromagnetic slider assembly 1 to decelerate and controlling the car door to close completely. The speed V can be adjusted by adjusting the magnitude of the control current I.

[0093] When the first connecting plate 31 touches the limit switch 51, the control component 4 receives the signal from the limit switch 51 and sends the information that the car door is completely closed to the elevator control system, and the elevator can run normally.

[0094] When the elevator arrives at the station, the control component 4 receives the signal and sends a reverse circuit current I- to control the car door to open (repeating the door-closing action in reverse). At the same time, the control component 4 controls the electromagnetic driver 54 to be powered on once, so that the second lock 53 moves upward to unlock the car door, and after unlocking, the second lock 53 returns to its normal position under the action of gravity.

[0095] When the light curtain is blocked during the closing process of the elevator door, the control component 4 receives the signal and immediately controls the car door to reopen. After receiving the passenger floor selection signal, the door-closing signal again or no signal is received for a period of time (the time can be freely adjusted), the control component 4 controls the car door to close again.

[0096] When the elevator door is blocked by a special obstacle under special circumstances without the light curtain being blocked, resulting in a change in the Lorentz magnetic force F. According to the formula F = qvB, the control component 4 receives that the current I is not output according to the established curve. The control component 4 immediately controls the car door to reopen. After receiving the passenger floor selection signal, the door-closing signal again or no signal is received for a period of time (the time can be freely adjusted), the control component 4 controls the car door to close again. If the obstacle continues to exist, the door will open and close repeatedly. When the number of door-opening times reaches a certain number (the number can be set), the control component 4 sends a signal of the existence of an obstacle to the duty room to remind the duty staff.

[0097] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0098] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. An elevator door machine, characterized in that: include: An electromagnetic slider assembly (1) is used to connect to a car door of an elevator and can drive the car door to move back and forth in a first direction; A driving component (2) comprising an electromagnetic track (21) and an electromagnetic reinforcement member (22); the electromagnetic track (21) extends along the first direction, and the electromagnetic reinforcement member (22) is used to enhance the magnetic field of the electromagnetic track (21) in the second direction; when the driving component (2) is powered on, the electromagnetic track (21) and the electromagnetic reinforcement member (22) can drive the electromagnetic slider assembly (1) to reciprocate along the first direction; wherein the first direction is arranged at an angle to the second direction; A connecting assembly (3) used for connecting the electromagnetic slider assembly (1) with the car door; The control component (4) is electrically connected to the driving component (2) and is used to control the power on or off of the driving component (2).

2. The elevator door machine according to claim 1, characterized in that: The electromagnetic enhancement component (22) comprises a shell (221), a core (222) and a coil (223); the core (222) and the coil (223) are arranged in the shell (221); with the second direction as the axis, the coil (223) is evenly wound on the core (222).

3. The elevator door machine according to claim 1, characterized in that: The electromagnetic reinforcement members (22) are arranged in plurality, and the plurality of electromagnetic reinforcement members (22) are spaced apart and distributed along the first direction; the driving component (2) comprises a connection structure (23), and two adjacent electromagnetic reinforcement members (22) are connected to each other via the connection structure (23).

4. The elevator door machine according to claim 3, characterized in that: The connection structure (23) comprises a first plug-in connector (231), a second plug-in connector (232), a first conductive member (233) and a second conductive member (234); the first plug-in connector (231) and the second plug-in connector (232) are respectively arranged on both sides of the electromagnetic reinforcement member (22), and one of the two adjacent electromagnetic reinforcement members (22) is plugged in and matched with the first plug-in connector (231) and the second plug-in connector (232) of the other electromagnetic reinforcement member (22); the first conductive member (233) is arranged on the first plug-in connector (231), and the second conductive member (234) is arranged on the second plug-in connector (232); when the first plug-in connector (231) and the second plug-in connector (232) are plugged in and matched, the first conductive member (233) and the second conductive member (234) are in abutment with each other.

5. The elevator door machine according to claim 1, characterized in that: The electromagnetic slider assembly (1) comprises a slider body (11), a sliding contact piece (13) and an elastic piece (12); the elastic piece (12) connects the slider body (11) and the sliding contact piece (13); and a side of the sliding contact piece (13) away from the elastic piece (12) is in sliding cooperation with the electromagnetic track (21).

6. The elevator door machine according to claim 1, characterized in that: The connecting assembly (3) comprises a first connecting plate (31) and a second connecting plate (32), wherein the first connecting plate (31) is connected to the electromagnetic slider assembly (1) and the second connecting plate (32) respectively, and the second connecting plate (32) is connected to the car door; a guide rail (34) is provided on the back plate (6) of the elevator door machine, and a pulley (33) is provided on the second connecting plate (32), and the pulley (33) is slidably matched with the guide rail (34).

7. The elevator door machine according to claim 1, characterized in that: The elevator door machine also includes a door lock structure (5), and the door lock structure (5) is used to drive the car door to remain in a closed state when the car door is closed; the door lock structure (5) includes a first lock catch (52), a second lock catch (53) and an electromagnetic driver (54), along the height direction of the car door, the first lock catch (52) is arranged at the top of the car door, the second lock catch (53) is arranged above the first lock catch (52), and the electromagnetic driver (54) is arranged above the second lock catch (53) and is electrically connected to the control component (4); when the electromagnetic driver (54) is powered on, the electromagnetic driver (54) can drive the second lock catch (53) to move in a direction away from the first lock catch (52).

8. The elevator door machine according to claim 7, characterized in that: The door lock structure (5) further comprises a pull rope (55), wherein the pull rope (55) is connected to a side of the second lock buckle (53) away from the first lock buckle (52), and is used to drive the second lock buckle (53) to move in a direction away from the first lock buckle (52).

9. The elevator door machine according to claim 8, characterized in that: The first lock buckle (52) is provided in two pieces, which are respectively arranged at the upper left corner and the upper right corner of the two car doors; the second lock buckle (53) is provided with two triangular sliding buckles (531) on one side close to the first lock buckle (52), and there is a spacing between the two triangular sliding buckles (531).

10. The elevator door machine according to claim 1, characterized in that: The electromagnetic tracks (21) are arranged in two groups. Along the height direction of the electromagnetic slider assembly (1), the two groups of electromagnetic tracks (21) are arranged on the upper and lower sides of the electromagnetic slider assembly (1) respectively. The electromagnetic reinforcement members (22) are arranged in two groups. Along the second direction, the two groups of electromagnetic reinforcement members (22) are arranged on the two sides of the electromagnetic slider assembly (1) respectively.

11. The elevator door machine according to claim 1, characterized in that: The driving component (2) further comprises a housing (24), wherein the electromagnetic track (21), the electromagnetic reinforcement member (22), and the electromagnetic slider assembly (1) are all arranged in the housing (24); a notch groove (241) is provided on a side of the housing (24) close to the connecting assembly (3).

Images