Car door driving device and elevator thereof

Abstract

The embodiment of the utility model relates to the technical field of elevators, and discloses a car door driving device. A first motor; the first motor and the left car door have a physical first power transmission path through a first transmission assembly; a second motor; the second motor and the right car door have a physical second power transmission path through a second transmission assembly; a door machine control system; the door machine control system is electrically connected with the first motor and the second motor. Wherein under the action of the door machine control system, the first motor and the second motor respectively drive the left car door and the right car door to be close to each other so as to execute the door closing action; and under the action of the door machine control system, the first motor and the second motor respectively drive the left car door and the right car door to be far away from each other so as to execute the door opening action.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a car door driving device and an elevator thereof. Background Art

[0002] Elevators are widely used in today's society. The elevator door operator and its car door system are crucial components of modern elevator technology, directly impacting elevator safety, reliability, and passenger experience. The primary function of the entire system is to control the opening and closing of the elevator car door, ensuring safe entry and exit for passengers.

[0003] Figure 1 This is a typical diagram of an elevator door machine. Figure 1 As shown, it includes a motor 10, a door operator control system 20, and a transmission system consisting of a synchronous belt 31, a drive pulley 32, a connector 33, a pulley 34, and a guide rail 35. The door operator control system 20 drives and controls the rotation of the motor 10. The motor 10 pulls the drive pulley 32 through the synchronous belt 31 to rotate, thereby further driving the left and right car doors 41 and 42 to open or close, performing the door opening and closing actions.

[0004] but, Figure 1 The illustrated elevator door operator drive system, in which a center-split door driver drives a single motor, has numerous drawbacks. Firstly, the large space required for this structure makes it difficult to meet the demand for wider doors in smaller spaces for convenient access in home elevators. Furthermore, the typical door operator drive system uses a drive motor to pull a belt that drives a driven pulley, resulting in significant mechanical wear. The center-split door also makes a loud opening and closing noise, which doesn't meet the low-noise requirements of home elevators. Furthermore, the motor requires 220V AC power, posing a safety hazard when used in home elevators.

[0005] Therefore, there is an urgent need to provide a suitable car door drive device to meet the requirements of home elevators for miniaturization, safety and low noise. Summary of the Invention

[0006] The utility model provides a car door driving device and an elevator thereof, aiming to solve the defects of existing elevator door machines such as high noise, severe wear and tear, and potential safety hazards.

[0007] In a first aspect, the present invention provides a car door drive device. The car door drive device includes: a first motor; the first motor having a first physical power transmission path with a left car door through a first transmission assembly; a second motor; the second motor having a second physical power transmission path with a right car door through a second transmission assembly; and a door machine control system; the door machine control system being electrically connected to the first motor and the second motor, respectively. The door machine control system operates to drive the first motor and the second motor to move the left and right car doors toward each other to close the doors; and the door machine control system operates to drive the first motor and the second motor to move the left and right car doors away from each other to open the doors.

[0008] Optionally, the first transmission assembly is a transmission assembly that converts rotational motion into linear motion; the second transmission assembly has the same structure as the first transmission assembly; wherein the rotating shaft of the first motor is connected to the first transmission assembly, and the rotating shaft of the second motor is connected to the second transmission assembly.

[0009] Optionally, the car door drive device further includes: a first coupling and a second coupling; the first motor establishes a physical connection with the first transmission assembly through the first coupling; and the second motor establishes a physical connection with the second transmission assembly through the second coupling.

[0010] Optionally, the car door driving device further includes: a transmission belt sleeved on the first coupling and the second coupling, so that the first coupling and the second coupling establish a power transmission path.

[0011] Optionally, the door machine control system further includes: a buzzer; wherein the buzzer is activated when the first motor or the second motor fails to emit a buzzer prompt sound.

[0012] Optionally, the first motor is provided with a first encoder; the first encoder is used to detect the rotation angle of the first motor and is connected to the door machine control system through a first encoder connecting line; and the second motor is provided with a second encoder; the second encoder is used to detect the rotation angle of the second motor and is connected to the door machine control system through a second encoder connecting line.

[0013] Optionally, the first motor is connected to the door machine control system via a first power connection line and operates under the action of the door machine control system; the second motor is connected to the door machine control system via a second power connection line and operates under the action of the door machine control system; wherein, the first motor and the second motor are DC brushless motors or permanent magnet DC motors.

[0014] In a second aspect, an elevator comprises: a left car door and a right car door that can be opened and closed; and the car door driving device as described above.

[0015] The advantages of the car door drive device provided by the present invention include: A swing door, which uses two motors operating synchronously to control the opening and closing of the elevator car door, requires less installation space than a traditional center-opening door. Furthermore, since the two motors operate synchronously, their power is low, significantly reducing wear on the motors caused by the car door's movement. Furthermore, the drive load is low, and motor noise is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 This is a schematic diagram of the structure of a typical center-split door elevator door machine.

[0018] Figure 2 Schematic diagram of a car door driving device according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of a door machine control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope and application of the present invention.

[0021] It should be noted that, unless otherwise expressly specified or limited, the terms "center," "longitudinal," "transverse," "upper," "lower," "vertical," "horizontal," "inner," "outer," and the like used in this specification to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Terms such as "mounted," "connected," "connected," and "fixed" should be interpreted broadly, and may refer to, for example, fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features; "plurality" means two or more; and "and / or" includes any and all combinations of one or more of the relevant listed items. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] Figure 1 Schematic diagram of the car door drive device provided by the embodiment of the present utility model. Figure 1 As shown, the device for driving the left and right car doors of an elevator to open and close includes a first motor 101 , a second motor 102 and a door machine control system 201 .

[0023] The first motor 101 forms a physical first power transmission path with the left car door 301 through the first transmission assembly 103, thereby driving the left car door 301 to move in a straight line. The second motor 102 forms a physical second power transmission path with the right car door 302 through the second transmission assembly 104, thereby driving the right car door 302 to move in a straight line.

[0024] Specifically, the first motor 101 and the second motor 102 may be brushless DC motors or permanent magnet DC motors powered by DC voltage, thereby providing smaller size and better safety.

[0025] The door machine control system 201 is the main system for realizing motor control. It can select and use any suitable type of electronic computing system that can meet and satisfy the synchronous control of two motors according to the actual needs, and is not specifically limited here.

[0026] In order to realize the control of the first motor 101 and the second motor 102, the door machine control system 201 can establish electrical connections with the first motor 101 and the second motor 102 respectively, thereby controlling the operation of the motors to perform the opening and closing actions of the elevator car door.

[0027] Specifically, Figure 3 The functional block diagram of the door machine control system 201 is shown as an example. The door machine control system 201 may be provided with corresponding electronic devices to perform the required functions. Figure 3 As shown, the door machine control system 201 has a door lock interface 202, an input / output interface 203, a power supply interface 204, a first encoder connection line interface 205, a second encoder connection line interface 206, a first power line interface 207, a second power line interface 208 and an operator interface 209.

[0028] The first motor 101 is equipped with a first encoder. This first encoder is used to detect the rotation angle of the first motor. It is connected to the first encoder connection line interface 205 of the door operator control system via a first encoder connection line. This encoder provides encoder sampling information representing the motor's rotation angle to the door operator control system 201, allowing it to obtain the operating status of the first motor. The first power line interface 207 of the door operator control system 201 is also connected to the first motor 101 via a first power line, providing the required DC voltage to drive the first motor.

[0029] Similarly, the second motor 102 is equipped with a second encoder. This second encoder is used to detect the rotation angle of the second motor and is connected to the second encoder connection line interface 206 of the door operator control system via a second encoder connection line, allowing the door operator control system 201 to obtain the operating status of the second motor. The second power line interface 208 of the door operator control system 201 is also connected to the second motor 102 via a second power line, providing the required DC voltage to drive the second motor.

[0030] In actual use, when the door needs to be closed, the door control system 201 can control the first motor 101 and the second motor 102 to respectively drive the left and right car doors 301 and 302 toward each other. The door control system 201 can determine the travel distance of the car doors based on the data collected by the first and second encoders. When the door needs to be opened, the door control system 201 can control the first motor 101 and the second motor 102 to respectively drive the left and right car doors 301 and 302 away from each other.

[0031] In some embodiments, the first motor 101 may be a coupling motor that is physically connected to the first transmission assembly via a first coupling. Correspondingly, the second motor 102 may also be a coupling motor that is physically connected to the second transmission assembly via a corresponding second coupling.

[0032] Specifically, the first transmission assembly 103 and the second transmission assembly 104 are transmission assemblies capable of converting rotational motion into linear motion. Both can employ the same transmission structure design and can utilize any suitable type of transmission mechanism, including but not limited to screw drive and pulley drive, as required by the actual situation.

[0033] Thus, the rotating shaft of the first motor 101 can be connected to the first transmission assembly 103, applying a rotational torque. Under the conversion action of the first transmission assembly 103, this torque is converted into power to drive the left car door 301 in linear motion. The rotating shaft of the second motor 102 can be connected to the second transmission assembly 104, applying a rotational torque. Under the conversion action of the second transmission assembly 104, this torque is converted into power to drive the right car door 302 in linear motion.

[0034] Preferably, in addition to the independently operated transmission assembly, the car door driving device may further include: a transmission belt 401 sleeved on the first coupling and the second coupling. The transmission belt 401 establishes a power transmission path between the first coupling and the second coupling.

[0035] Therefore, the first motor and the second motor can provide a certain degree of redundant backup function. When one of the motors is damaged or fails, the power output of the other motor can be used to complete the door opening or closing action.

[0036] Of course, in this fault state, the motor cannot provide sufficient power and can only barely maintain operation, which will have a great impact on the service life of the motor and the mechanical transmission structure. Therefore, the car door drive device can also include an additional buzzer to serve as a reminder.

[0037] Among them, when the above-mentioned first motor or second motor fails, the buzzer can be started by the door machine control system to emit a preset buzzer prompt sound to remind maintenance personnel that there is a fault in the current car door drive device.

[0038] Based on the above-described door drive device, an embodiment of the present invention further provides a home elevator. The elevator comprises: openable and closable left and right doors, and the above-described door drive device. The door drive device drives the left and right doors to open and close the doors.

[0039] In summary, this car door drive system utilizes a dual-axis drive system for swing doors, using two motors to independently drive the car door. Compared to traditional single-motor drive systems, this system reduces motor power, simplifies the transmission mechanism, and requires less installation space. Furthermore, because the two motors operate synchronously, less power is required, significantly reducing wear on the motors caused by the car door's movement.

[0040] Furthermore, the two motors are redundant to a certain extent. When the drive or motor on one side is damaged, the door is opened and closed by the other side, and a buzzer is emitted at the same time to remind maintenance personnel that there is a fault in the door machine.

[0041] In addition, due to the use of a motor-driven swing door, the load on a single car door is smaller, the motor noise is correspondingly reduced, and a DC motor powered by low-voltage DC can be used, which improves overall safety and reliability.

[0042] The above content is a further detailed description of the present invention in conjunction with specific / preferred embodiments, and the specific implementation of the present invention cannot be limited to these descriptions. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the concept of the present invention, and all of these modifications and improvements fall within the scope of protection of the present invention.

Claims

1. A car door driving device, characterized in that: include: First motor; The first motor has a physical first power transmission path with the left car door through the first transmission assembly; Second motor; The second motor has a second physical power transmission path with the right car door through the second transmission assembly; Door machine control system; the door machine control system is electrically connected to the first motor and the second motor respectively; Wherein, under the action of the door machine control system, the first motor and the second motor respectively drive the left car door and the right car door to approach each other to perform the door closing action; and Under the action of the door machine control system, the first motor and the second motor respectively drive the left car door and the right car door to move away from each other to perform a door opening action.

2. The car door driving device according to claim 1, characterized in that: The first transmission assembly is a transmission assembly that converts rotational motion into linear motion; the second transmission assembly has the same structure as the first transmission assembly; Wherein, the rotating shaft of the first motor is connected to the first transmission assembly, and the rotating shaft of the second motor is connected to the second transmission assembly.

3. The car door driving device according to claim 2, characterized in that: Also includes: a first coupling and a second coupling; The first motor establishes a physical connection with the first transmission assembly through the first coupling; the second motor establishes a physical connection with the second transmission assembly through the second coupling.

4. The car door driving device according to claim 3, characterized in that: Also includes: A transmission belt is sleeved on the first coupling and the second coupling so that the first coupling and the second coupling establish a power transmission path.

5. The car door driving device according to claim 4, characterized in that: The door machine control system further includes: a buzzer; Wherein, the buzzer is activated when the first motor or the second motor fails to emit a buzzer prompt sound.

6. The car door driving device according to claim 1, characterized in that: The first motor is provided with a first encoder; the first encoder is used to detect the rotation angle of the first motor and is connected to the door machine control system through a first encoder connection line; and The second motor is provided with a second encoder; the second encoder is used to detect the rotation angle of the second motor and is connected to the door machine control system via a second encoder connection line.

7. The car door driving device according to claim 6, characterized in that: The first motor is connected to the door machine control system via a first power connection line and operates under the action of the door machine control system; the second motor is connected to the door machine control system via a second power connection line and operates under the action of the door machine control system; Wherein, the first motor and the second motor are brushless DC motors or permanent magnet DC motors.

8. An elevator, characterized in that: include: Openable left and right car doors; and A car door drive device as claimed in any one of claims 1 to 7.

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