Linear motor type electric sliding door driving device

Abstract

The invention discloses a linear motor type electric sliding door driving device, which belongs to the field of linear motors, and comprises a linear motor assembly, a mounting connecting piece, a gas spring assembly and a front and back locking mechanism, the linear motor assembly provides driving power needed by automatic door opening and closing of the electric sliding door. The mounting connecting piece is divided into a fixed mounting piece of the device and a connecting mounting piece of the sliding door; the gas spring assembly is used for pushing out the sliding door by a certain distance when the device is in a power-off state and is not locked; and the front and back locking unit locks the sliding door through a knob and powers off the device. An electromagnetic force driving technical route is adopted, reliability is high, the installation space is small, the weight is light, and the device can be used in various electric sliding door devices in the field of rail transit.

Description

Technical Field

[0001] This invention relates to the field of linear motor technology, and in particular to a linear motor-type electric sliding door drive device. Background Technology

[0002] Currently, most rail transit systems, including high-speed trains and subway locomotives, use rotating motors to drive belt drives or rack and pinion drives as the automatic door opening and closing mechanism. This structure suffers from lifespan issues such as severe wear or belt fatigue, and is also complex, has low integration, occupies a large space, and is heavy. Summary of the Invention

[0003] The purpose of this invention is to provide a linear motor-type electric sliding door drive device to solve the problems in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention provides a linear motor type electric sliding door drive device, including: a linear motor assembly, a mounting connector, a gas spring assembly, and a front and rear locking mechanism;

[0005] The linear motor assembly provides the driving power required for the automatic opening and closing of the electric sliding door; the mounting connector is divided into a fixed mounting component for the device and a connecting mounting component for the sliding door; the gas spring assembly functions to push the sliding door a certain distance when the device is not locked in the power-off state; the front and rear locking units lock the sliding door through a knob and de-energize the device.

[0006] The linear motor assembly includes an aluminum frame, a motor stator, a motor mover, a position sensor, stoppers at both ends, and internal supports at both ends.

[0007] The mounting connectors are bolted to the upper surface of the aluminum frame; the gas spring assembly is mounted on the lower surface of the aluminum frame via supports; the front and rear locking mechanisms are bolted to the lower surface of the aluminum frame; the motor stator is mounted in the upper internal slot of the aluminum frame and tightened from top to bottom with bolts; the motor mover is mounted in the lower internal slot of the aluminum frame, maintaining a small gap with the motor stator; the position sensor is bolted to the middle position inside the aluminum frame; the end stops are mounted at both ends of the aluminum frame; and the internal supports at both ends are bolted to both ends of the aluminum frame.

[0008] The mounting connector secures the device and connects it to the sliding door. When powered on, the motor stator generates an electromagnetic field, providing the necessary electromagnetic force to the motor mover. The rollers of the motor mover are positioned and supported by the track of the aluminum frame. The motor mover drives the sliding door to achieve automatic opening and closing and obstacle detection functions under the action of electromagnetic force. When the sliding door is open or closed, the front and rear locking mechanisms lock the sliding door through a knob and de-energize the device. When the device is de-energized and not locked, the gas spring assembly pushes the sliding door a certain distance.

[0009] In one embodiment, the aluminum outer frame of the linear motor assembly serves as the main structure of the device, and its interior is divided into upper and lower layers.

[0010] Two motor stators are installed on both sides of the upper layer, and a position sensor is installed in the middle;

[0011] The lower layer serves as a track, and the rollers on the motor move back and forth on the track.

[0012] To prevent deformation of the aluminum outer frame, internal supports are installed on both sides; electromagnets are installed on the two end stops, which not only provide a limiting function for the motor actuator at both ends, but also provide a suction force to fix the sliding door at both ends.

[0013] In one embodiment, the mounting connector is divided into top-mounted or side-mounted structures, and the mounting connector for the sliding door is a C-shaped structure, which avoids interference from the front and rear locking mechanisms within a limited space.

[0014] In one embodiment, when the door is open or closed, the front and rear locking mechanism operates the locking knob to forcibly lock the sliding door and simultaneously triggers a signal switch to shut off the power to the device.

[0015] The linear motor-type electric sliding door drive device provided by this invention has the following beneficial effects:

[0016] (1) It adopts the electromagnetic force drive technology route, which has high reliability, small installation space and light weight, and can be used in various electric sliding door devices in the field of rail transit;

[0017] (2) The mechanism is simple and highly integrated, with the drive mechanism integrated into the overall aluminum frame;

[0018] (3) Low maintenance frequency, few consumable parts, low cost, and long service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 for Figure 1A schematic diagram of the cross-sectional structure.

[0021] Figure 3 This is a schematic diagram of the locking mechanism for closing the door according to the present invention.

[0022] Figure 4 This is a schematic diagram of the locking mechanism for opening the door according to the present invention.

[0023] Figure 5 This is a schematic diagram of the gas spring assembly structure of the present invention.

[0024] Figure 6 This is a side view of the overall structure of the present invention. Detailed Implementation

[0025] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a linear motor-type electric sliding door drive device according to the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0026] This invention provides a linear motor type electric sliding door drive device, such as... Figure 1 As shown, it includes a linear motor assembly 1, a mounting connector 2, a gas spring assembly 3, and a front and rear locking mechanism 4. Figure 2 As shown, the linear motor assembly 1 includes an aluminum frame 5, a motor stator 6, a motor mover 7, a position sensor 8, end stops 9, and end supports 10. The mounting connector 2 is bolted to the upper surface of the aluminum frame 5, the gas spring assembly 3 is mounted on the lower surface of the aluminum frame 5 via supports, and the front and rear locking mechanisms 4 are bolted to the lower surface of the aluminum frame 5. The motor stator 6 is installed in the upper internal slot of the aluminum frame 5 and is tightened from top to bottom with bolts; the motor mover 7 is installed in the lower internal slot of the aluminum frame 5, maintaining a small gap with the motor stator 6; the position sensor 8 is bolted to the middle position inside the aluminum frame 5; the end stops 9 are installed at both ends of the aluminum frame 5; and the end supports 10 are bolted to both ends of the aluminum frame 5.

[0027] The linear motor assembly 1 mainly provides the driving power required for the automatic opening and closing of the electric sliding door. The mounting connector 2 is mainly divided into the fixed installation of the electric sliding door drive device of the present invention and the connection installation of the sliding door. The gas spring assembly 3 mainly functions to push the sliding door a certain distance when the electric sliding door drive device is de-energized and not locked. The front and rear locking mechanism 4 mainly functions to lock the sliding door by turning the knob and de-energize the electric sliding door drive device.

[0028] The working principle of this invention is as follows: The electric sliding door drive device is fixed in place by the mounting connector 2. After the sliding door is connected, in the power-on state, the motor stator 6 of the linear motor assembly 1 generates an electromagnetic field, which provides the required electromagnetic force to the motor mover 7. The roller of the motor mover 7 is positioned by the track support of the aluminum outer frame 5. The motor mover 7 drives the sliding door to realize the function of automatic opening and closing under the action of electromagnetic force. In the open / closed state of the sliding door, the front and rear locking mechanisms 4 can lock the sliding door through the knob and de-energize the electric sliding door drive device. When the electric sliding door drive device is de-energized and not locked, the gas spring assembly 3 can push the sliding door a certain distance.

[0029] This invention adopts an electromagnetic force drive technology, which is highly reliable, requires little installation space, is lightweight, and has low maintenance costs. It can be used in various electric sliding door devices in the rail transit field.

[0030] Please refer to Figure 2 and Figure 6 In the linear motor assembly 1, the aluminum outer frame 5 serves as the main structure of the electric sliding door drive device. The interior is divided into two layers: the upper layer has two motor stators 6 installed on both sides and a position sensor 8 installed in the middle; the lower layer serves as the track, and the rollers on the motor mover 7 can move back and forth on the track. In order to prevent the aluminum outer frame 5 from deforming, inner supports 10 are installed on both sides; electromagnets are installed on the two end stops 9, which not only provide a limiting function for the two ends of the motor mover 7, but also provide a suction force to fix the sliding door at both ends.

[0031] Please refer to Figure 1 The mounting connector 2 includes a fixed mounting component for the electric sliding door drive device and a sliding door mounting component. The fixed mounting component can be divided into an upper mounting or a side mounting structure. The sliding door mounting component has a C-shaped structure, which avoids interference from the front and rear locking mechanisms 4 in a limited space.

[0032] Please refer to Figure 3 and Figure 4 The main function of the front and rear locking mechanism 4 is to lock the sliding door by operating the locking knob when the door is open or closed, and at the same time trigger the signal switch to shut off the power to the electric sliding door drive device.

[0033] Please refer to Figure 5 The main function of the gas spring assembly 3 is to push the sliding door out a certain safe distance when the electric sliding door drive device is in a power failure state and the front and rear locking mechanisms 4 are not locked, if the sliding door is completely hidden inside the wall when it is open or if there is a safety hazard in manually pulling the sliding door out.

[0034] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A linear motor-type electric sliding door drive device, characterized in that, It includes a linear motor assembly (1), a mounting connector (2), a gas spring assembly (3), and a front and rear locking mechanism (4); The linear motor assembly (1) provides the driving power required for the automatic opening and closing of the electric sliding door; the mounting connector (2) is divided into a fixed mounting component for the device and a connecting mounting component for the sliding door; the gas spring assembly (3) functions to push the sliding door a certain distance when the device is not locked in the power-off state; the front and rear locking unit (4) locks the sliding door by a knob and disconnects the power to the device. The linear motor assembly (1) includes an aluminum outer frame (5), a motor stator (6), a motor mover (7), a position sensor (8), two end stops (9), and two end inner supports (10). The mounting connector (2) is bolted to the upper surface of the aluminum frame (5), the gas spring assembly (3) is mounted on the lower surface of the aluminum frame (5) via a support, and the front and rear locking mechanism (4) is bolted to the lower surface of the aluminum frame (5); the motor stator (6) is mounted in the upper internal slot of the aluminum frame (5) and is pressed down from top to bottom by bolts; the motor mover (7) is mounted in the lower internal slot of the aluminum frame (5) and maintains a small gap with the motor stator (6); the position sensor (8) is bolted to the middle position inside the aluminum frame (5); the two end stops (9) are mounted at both ends of the aluminum frame (5); and the two end inner supports (10) are bolted to both ends of the aluminum frame (5). The mounting connector (2) fixes the device in place. After connecting the sliding door, the motor stator (6) generates an electromagnetic field when the device is powered on, providing the required electromagnetic force to the motor mover (7). The roller of the motor mover (7) is positioned by the track support of the aluminum frame (5). The motor mover (7) drives the sliding door to achieve automatic opening and closing and obstacle detection functions under the action of electromagnetic force. When the sliding door is open or closed, the front and rear locking mechanism (4) locks the sliding door by turning the knob and cuts off the power to the device. When the device is de-powered and not locked, the gas spring assembly (10) pushes the sliding door out a certain distance.

2. The linear-motor type electric sliding door drive device according to claim 1, characterized by In the linear motor assembly (1), the aluminum outer frame (5) serves as the main structure of the device, and its interior is divided into upper and lower layers: Two motor stators (6) are installed on both sides of the upper layer, and a position sensor (8) is installed in the middle. The lower layer serves as a track, and the rollers on the motor mover (7) move back and forth on the track; In order to prevent the aluminum outer frame (5) from deforming, inner supports (10) are installed on both sides; electromagnets are installed on the two end stops (9) to provide a limiting effect for the motor mover (7) at both ends, and at the same time provide a suction force to fix the sliding door at both ends.

3. The linear motor type electric sliding door drive device as described in claim 1, characterized in that, In the installation connector (2), the fixed installation component is divided into top-mounted or side-mounted structure. The connection installation component of the sliding door is a C-shaped structure, which avoids interference from the front and rear locking mechanisms (4) in a limited space.

4. The linear motor type electric sliding door drive device as described in claim 1, characterized in that, When the front and rear locking mechanism (4) is in the open or closed state, the locking knob is operated to forcibly lock the sliding door and at the same time trigger the signal switch to turn off the power of the device.

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