Translation door braked by motor during power failure

Abstract

The translation door comprises a permanent magnet motor for driving a door body to translate, the permanent magnet motor drives a power output shaft through a speed reducing mechanism, the input end of the permanent magnet motor is connected with two sets of circuits in parallel, the first set of circuits is powered by a controller, the controller is powered by a power line, and the second set of circuits is powered by a power line. The second group of circuits of the permanent magnet motor are short-circuited through the normally-closed switch, when the power supply stops supplying power, the normally-closed switch enables the second group of circuits to be short-circuited, and when the power supply supplies power, the normally-closed switch enables the second group of circuits to be open. The utility model has the advantage that the door body can be prevented from being manually moved under an abnormal condition.

Description

Technical Field

[0001] The utility model relates to a sliding door, in particular to a sliding door which can prevent the motor from braking during a power outage when the door body is artificially moved under abnormal circumstances. Background Art

[0002] Electric sliding doors are specialized entrance and exit management devices designed to restrict the movement of people and vehicles, and are now widely used in various venues. Electric sliding doors can be opened and closed independently via wireless remote control or automatically managed by a management system (i.e., an IC card management system). However, in the event of a power outage or motor failure, they may be manually opened, posing a safety hazard. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present utility model is to provide a sliding door which can prevent the motor from braking during a power outage when the door body is moved artificially under abnormal circumstances.

[0004] The utility model is achieved through the following technical measures: a sliding door with motor braking during power outage, including a permanent magnet motor that drives the door body to move horizontally, the permanent magnet motor drives the power output shaft through a reduction mechanism, the input end of the permanent magnet motor is connected in parallel with two groups of circuits, wherein the first group of circuits is powered by a controller, the controller is powered by a power line, the second group of circuits of the permanent magnet motor is short-circuited by a normally closed switch, when the power supply stops, the normally closed switch short-circuits the second group of circuits, and when the power supply is supplied, the normally closed switch disconnects the second group of circuits.

[0005] As a preferred embodiment, a manual switch is provided on the main circuit or the second group of circuits of the permanent magnet motor.

[0006] As a preferred embodiment, one end of the power output shaft is connected to the reduction mechanism through a clutch mechanism, and the other end of the power output shaft drives the door body to translate, and one end of the power output shaft is inserted into the output gear of the reduction mechanism, and a clutch key slot is provided on the output gear, and one end of the power output shaft is radially provided with a guide slot corresponding to the clutch key slot. One end of the power output shaft is also provided with a blind hole passing through the guide slot, and a clutch key is slidably arranged in the guide slot, and a compression spring is compressed between the bottom of the blind hole and the clutch key, thereby disconnecting the transmission of the power output shaft from the reduction mechanism; when the push rod moves out of the blind hole, the compression spring pushes the clutch key to slide in the guide slot and enter the clutch key slot, thereby connecting the power output shaft to the transmission of the reduction mechanism.

[0007] As a preferred embodiment, the outer end of the push rod is provided with a manual push-pull structure.

[0008] As a preferred embodiment, the permanent magnet motor is a single-phase ordinary permanent magnet motor or a three-phase permanent magnet synchronous motor.

[0009] As a preferred embodiment, the normally closed switch is a normally closed electromagnetic switch.

[0010] As a preferred embodiment, the permanent magnet motor is a single-phase motor; when the power supply is cut off, the normally closed switch loses power, and after the normally closed switch loses power, the two groups of normally closed switches close, short-circuiting the second group of circuit ends of the permanent magnet motor; when the power supply is turned on, the normally closed switch is energized, and after the normally closed switch is energized, the two groups of normally closed switches are disconnected, and the second group of circuit ends of the permanent magnet motor are disconnected.

[0011] As a preferred embodiment, the permanent magnet motor is a three-phase motor; when the power supply is cut off, the normally closed switch loses power, and after the normally closed switch loses power, the three groups of normally closed switches close, short-circuiting the second group of circuit ends of the permanent magnet motor; when the power supply is turned on, the normally closed switch is energized, and after the normally closed switch is energized, the three groups of normally closed switches are disconnected, and the second group of circuit ends of the permanent magnet motor are disconnected.

[0012] As a preferred embodiment, the second group of circuits of the permanent magnet motor is short-circuited through a normally closed switch, and the normally closed switch is connected to a power line.

[0013] When the utility model is working normally, the normally closed switch is energized and disconnected, the end of the second group of lines of the permanent magnet motor is disconnected, and the first group of lines supplies power to the permanent magnet motor. At this time, the permanent magnet motor works normally and the sliding door body opens or closes normally; when a power outage or a fault occurs, the first group of lines stops supplying power to the permanent magnet motor, and the normally closed switch loses power and closes at the same time, short-circuiting the ends of each line of the permanent magnet motor through the second group of lines. At this time, if the door body is pushed manually, the deceleration mechanism drives the permanent magnet motor to rotate at high speed in the reverse direction, that is, it is converted into a generator. At this time, due to the short circuit of the motor, the impedance force generated inside the motor is not easy to rotate, thereby generating a damping effect to prevent illegal human movement of the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front structural schematic diagram of an embodiment of the utility model when the door is closed.

[0015] Figure 2 This is a top view of the embodiment of the utility model when the door is open.

[0016] Figure 3 This is a structural diagram of the motor and reduction mechanism according to an embodiment of the present utility model.

[0017] Figure 4 It is a structural schematic diagram of the clutch mechanism of an embodiment of the present utility model.

[0018] Figure 5 This is an exploded schematic diagram of the clutch mechanism of an embodiment of the present utility model.

[0019] Figure 6 This is a schematic structural diagram of the power output shaft of an embodiment of the utility model.

[0020] Figure 7 This is a circuit diagram of a single-phase motor with a clutch mechanism according to an embodiment of the present utility model.

[0021] Figure 8 This is a circuit diagram of a three-phase motor with a clutch mechanism according to an embodiment of the present utility model.

[0022] Figure 9 This is a circuit diagram of a single-phase motor with a switch according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the embodiments and accompanying drawings.

[0024] This embodiment is a sliding door with motor braking during power outage, please refer to the attached Figures 1 to 8 , including a permanent magnet motor 2 that drives the door body 1 to move horizontally. The door body 1 moves horizontally on the track 5 to open and close the door. In this embodiment, the permanent magnet motor 2 drives the power output shaft 9 through a deceleration mechanism. The other end of the power output shaft 9 drives the door body 1 to move horizontally. The input end of the permanent magnet motor 2 is connected in parallel with two groups of circuits, wherein the first group of circuits is powered by a controller, and the controller is powered by a power line. The second group of circuits of the permanent magnet motor 2 is short-circuited through a normally closed switch K. When the power supply stops, the normally closed switch K short-circuits the second group of circuits. When the power supply is supplied, the normally closed switch K disconnects the second group of circuits.

[0025] When the sliding door is working normally, the normally closed switch K is energized and disconnected, the second group of circuit ends of the permanent magnet motor 2 are disconnected, and the first group of circuits supplies power to the permanent magnet motor 2. At this time, the permanent magnet motor 2 works normally, and the sliding door body 1 opens or closes normally; when a power outage or a fault occurs, the first group of circuits stops supplying power to the permanent magnet motor 2, and the normally closed switch K loses power and closes at the same time, short-circuiting the ends of the circuits of the permanent magnet motor 2 through the second group of circuits. At this time, if the door body 1 is pushed manually, the deceleration mechanism drives the permanent magnet motor 2 in the reverse direction to rotate at high speed (the magnetic field and the coil cut the magnetic lines of force to generate induced electromotive force), which is converted into a generator. At this time, due to the short circuit of the motor, the internal impedance of the motor is not easy to rotate, and a damping effect is generated to prevent people from illegally removing the door body. The permanent magnet motor 2 can be a single-phase ordinary permanent magnet motor (reference Figure 7 ) can also be a three-phase permanent magnet synchronous motor (reference Figure 8 ).

[0026] In order to be able to push the sliding door after a power outage, a manual switch SW can also be set on the main circuit of the motor or the second group of circuits. Normally, the manual switch SW is in a closed state. When the door body 1 needs to be pushed manually due to a power outage or fault, the manual switch SW is opened. When the door body 1 moves, no induced electromotive force will be generated inside the motor, which facilitates movement. The manual switch SW is preferably set on the second group of circuits to avoid accidentally touching the switch and causing the motor to stop under normal circumstances.

[0027] In an embodiment of a sliding door with motor braking during a power outage, based on the previous technical solution, one end of the power output shaft 9 can be specifically connected to the reduction mechanism through a clutch mechanism. In this embodiment, the reduction mechanism is a gear reduction mechanism, and in other embodiments it can also be a belt reduction mechanism, etc. The output gear 8 of the reduction mechanism is inserted into one end of the power output shaft 9, and a clutch key groove 801 is provided on the output gear 8. A guide groove 901 is radially provided at one end of the power output shaft 9 corresponding to the clutch key groove 801, and a blind hole 902 passing through the guide groove 901 is further provided at one end of the power output shaft 9. The clutch key 10 is slidably provided in the guide groove 901, and a compression spring 1 is compressed between the bottom of the blind hole 902 and the clutch key 10. 3. One end of the power output shaft is also provided with a push rod 12 that is movably inserted into the blind hole 902; when the push rod 12 moves into the blind hole 902, it pushes the clutch key 801 to compress the compression spring 13 in the guide slot 901 and separates from the clutch key slot 801, thereby disconnecting the power output shaft 9 from the transmission of the reduction mechanism; when the push rod 12 moves out of the blind hole 902, the compression spring 13 pushes the clutch key 10 to slide in the guide slot 901 into the clutch key slot 801, thereby connecting the power output shaft 9 to the output gear 8 of the reduction mechanism; in order to open the door even when a power outage or failure occurs, a clutch mechanism can be added to separate the door body 1 from the power drive of the motor, so that the door body 1 will not generate an induced electromotive force inside the motor when it moves. In this embodiment, reference Figures 4 to 6 , a clutch mechanism is used to separate the power output shaft 9 from the output gear 8 of the reduction mechanism.

[0028] In an embodiment of a sliding door with motor braking during power failure, please refer to Figures 7 to 9 On the basis of the above technical solution, the normally closed switch K may be a normally closed electromagnetic switch.

[0029] The above is an explanation of the sliding door with motor braking during power outage of the present invention, which is used to help understand the present invention. However, the implementation method of the present invention is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications that do not deviate from the principles of the present invention should be equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A sliding door with motor braking during power outage, characterized by: It includes a permanent magnet motor that drives the door body to move horizontally, and the permanent magnet motor drives the power output shaft through a reduction mechanism. Two groups of circuits are connected in parallel to the input end of the permanent magnet motor, wherein the first group of circuits is powered by a controller, and the controller is powered by a power line. The second group of circuits of the permanent magnet motor is short-circuited through a normally closed switch. When the power supply stops, the normally closed switch short-circuits the second group of circuits. When the power supply is supplied, the normally closed switch disconnects the second group of circuits.

2. The sliding door with motor braking during power outage according to claim 1, characterized in that: A manual switch is provided on the main circuit or the second group of circuits of the permanent magnet motor.

3. The sliding door with motor braking during power outage according to claim 1, characterized in that: One end of the power output shaft is connected to the reduction mechanism through a clutch mechanism, and the other end of the power output shaft drives the door body to translate, and one end of the power output shaft is inserted into the output gear of the reduction mechanism, and a clutch key slot is provided on the output gear. One end of the power output shaft is radially provided with a guide slide slot corresponding to the clutch key slot, and one end of the power output shaft is also provided with a blind hole passing through the guide slide slot, and a clutch key is slidably arranged in the guide slide slot, and a compression spring is compressed between the bottom of the blind hole and the clutch key, thereby disconnecting the transmission of the power output shaft from the reduction mechanism; when the push rod moves out of the blind hole, the compression spring pushes the clutch key to slide in the guide slide slot into the clutch key slot, thereby connecting the power output shaft to the transmission of the reduction mechanism.

4. The sliding door with motor braking during power outage according to claim 3, characterized in that: The outer end of the push rod is provided with a manual push-pull structure.

5. The sliding door with motor braking during power outage according to claim 1, characterized in that: The permanent magnet motor is a common permanent magnet motor or a three-phase permanent magnet synchronous motor.

6. The sliding door with motor braking during power outage according to claim 1, characterized in that: The normally closed switch is a normally closed electromagnetic switch.

7. The sliding door with motor braking during power outage according to claim 1, characterized in that: The permanent magnet motor is a single-phase motor; when the power is cut off, the normally closed switch loses power, and after the normally closed switch loses power, the two groups of normally closed switches close, short-circuiting the second group of circuit ends of the permanent magnet motor; When the power supply is turned on, the normally closed switch is energized, and after the normally closed switch is energized, the two groups of normally closed switches are disconnected, and the end of the second group of lines of the permanent magnet motor is disconnected.

8. The sliding door with motor braking during power outage according to claim 1, characterized in that: The permanent magnet motor is a three-phase motor; when the power supply is cut off, the normally closed switch loses power, and after the normally closed switch loses power, the three groups of normally closed switches close, short-circuiting the second group of circuit ends of the permanent magnet motor; when the power supply is turned on, the normally closed switch is energized, and after the normally closed switch is energized, the three groups of normally closed switches are disconnected, and the second group of circuit ends of the permanent magnet motor are disconnected.

9. The sliding door with motor braking during power outage according to claim 1, characterized in that: The second group of circuits of the permanent magnet motor is short-circuited through a normally closed switch, and the normally closed switch is connected to a power supply.

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