JP2009299341A - Lift gate door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lift gate door openable or closable more smoothly than a conventional lift gate door and preventing the door from being unexpectedly opened or closed when moving or stopping the door without fail. <P>SOLUTION: This lift gate door 1 includes a DC voltage control part 15 for supplying DC voltage to a DC electric motor 9 and releasing supply of DC voltage to the DC electric motor 9 and a short circuit 21 for short-circuiting a power transmission part 20 of the DC voltage control part 15 for the DC electric motor 9 based on the release of supply of DC voltage to the DC electric motor 9 by the DC voltage control part 15 and releasing the short-circuiting based on supply of DC voltage to the DC electric motor 9 by the DC voltage control part 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flip-up gate suitable for use in an entrance of a garage or the like.

JP 11-270227 A

  For example, in Patent Document 1, a flip-up type equipped with a control means for decelerating the rotation of the arm means based on detection by the detection means for detecting the position of the arm means immediately before and after fully opening the door. A gate has been proposed.

  By the way, in such a flip-up type gate, it is desirable that the door can be opened and closed more smoothly, and an unintended opening and closing operation of the door is more reliably prevented when the door stops moving.

  The present invention has been made in view of the above-described points, and an object of the present invention is to allow the door to be opened and closed more smoothly and to reliably generate an unintended opening and closing operation of the door when the door stops moving. It is to provide a flip-up type gate that can be prevented.

  The flip-up type gate of the present invention includes a support, arm means supported by the support at one end so as to be rotatable in a vertical plane, attached to the other end of the arm means, and the rotation of the arm means. A door that moves between the fully open position and the fully closed position by movement, and a DC electric motor connected to the arm means, and the arm means is rotated based on the rotation of the output rotating shaft of the DC electric motor. An arm rotating means to be moved, and a DC voltage is applied to the DC electric motor to rotate the output rotating shaft of the DC electric motor, while the DC electric motor is stopped to stop the rotation of the output rotating shaft of the DC electric motor. A DC voltage control unit that cancels the application of the DC voltage to the DC motor, and a DC electric motor of the DC voltage control unit based on the cancellation of the application of the DC voltage to the DC electric motor by the DC voltage control unit. While short-circuiting the power transmission unit for data, and a short circuit for releasing the short circuit based on the application of the DC voltage for a DC electric motor by the DC voltage controller.

  According to the flip-up type gate of the present invention, in particular, the arm circuit has the DC electric motor connected to the arm means and rotates the arm means based on the rotation of the output rotating shaft of the DC electric motor. And a short circuit of the power transmission unit for the DC electric motor of the DC voltage control unit based on the release of the application of the DC voltage to the DC electric motor by the DC voltage control unit, while the DC voltage control unit A short circuit that cancels the short circuit based on the application, it is possible to quickly apply a braking force to the door when the movement of the door stops, and to perform an unintended opening / closing operation of the door. Occurrence can be prevented more reliably. When a speed reduction mechanism or the like is interposed between the DC electric motor and the arm means, a braking force can be more effectively applied to the door by a short circuit by the short circuit.

  In a preferred example of the flip-up gate of the present invention, a prohibition member that prohibits movement of the door toward the fully open position at the fully open position and prohibition of prohibiting movement of the door toward the fully closed position at the fully closed position. A movement prohibiting means having at least one of the members, and an overcurrent detection section for detecting an overcurrent from the DC voltage control section to the DC electric motor that is generated when the movement of the door is prohibited by the movement prohibiting means; The DC voltage control unit cancels the application of the DC voltage to the DC electric motor based on the detection of the overcurrent by the overcurrent detection unit. According to such a preferable example, desired full opening and full closing can be performed without generating a gap between the door or the like and the ground or the movement prohibiting means.

  In a preferred example of the flip-up type gate of the present invention, the short circuit is a power transmission unit for the DC electric motor of the DC voltage control unit from the start to the end of the release of the application of the DC voltage to the DC electric motor by the DC voltage control unit. While the short-circuit state is maintained, the short-circuit release state of the power transmission unit with respect to the DC electric motor of the DC voltage control unit is maintained from the start to the end of application of the DC voltage to the DC electric motor by the DC voltage control unit. .

  In a preferred example of the flip-up type gate of the present invention, a forcible release operation unit for forcibly releasing a short circuit due to a short circuit is provided. In such a preferable example, the door can be easily opened and closed manually, for example, by forcibly releasing the short circuit due to the short circuit by operating the forcible release operation unit.

  In a preferred example of the flip-up type gate of the present invention, a biasing means for elastically biasing the arm means to bias the door toward the flip-up direction against the dead weight of the door and arm means is provided. Yes.

  In a preferred example of the flip-up type gate of the present invention, the door that moves toward the fully opened position by the rotation of the arm means arrives at the position immediately before the fully opened door, and the arm means turns to the fully closed position. Equipped with arrival detecting means for detecting arrival of at least one of the moving doors immediately before the fully closed position, the DC voltage control unit moves toward the fully opened position by the rotation of the arm means. Rotation speed of the arm means after arrival of the door to be fully opened and rotation of the arm means after arrival of the door moving toward the fully closed position due to rotation of the arm means to the position immediately before the fully closed door In order to reduce the rotational speed of at least one of the speeds, arrival of at least one of the arrival of the door to the position immediately before the door fully opened and the arrival of the door to the position immediately before the door completely closed. Based on the detection of, so as to step down the DC voltage applied to the DC electric motor. According to such a preferred example, the door can be opened and closed more smoothly by the control of the DC electric motor based on the application and release of the DC voltage by the DC voltage control unit, and the DC based on the detection by the arrival detection means. By stepping down the DC voltage applied to the electric motor, it is possible to more reliably avoid a collision with the ground such as a door or a stopper when the door is fully opened or completely closed. Can be prevented. Further, according to such a preferable example, the rotation of the output rotation shaft of the DC electric motor is compared with, for example, a flip-up type gate provided with an arm rotating means for rotating the arm means by an AC electric motor (induction motor). The speed can be adjusted smoothly.

  According to the present invention, it is possible to provide a flip-up gate that can more smoothly prevent the occurrence of an unintentional opening / closing operation of the door when the door stops moving, while allowing the door to open / close more smoothly.

  Next, the present invention will be described in more detail based on an example of a preferred embodiment shown in the drawings. The present invention is not limited to these examples.

  1 to 10, the flip-up gate 1 of the present example includes a pair of hollow prismatic columns 2 and 3 that are erected, and one column 31 at one end 31 and the columns 2 and 3 in the vertical plane in the A and B directions. Arm means 4 and 5 supported in a freely pivotable manner, and a fully closed position indicated by a solid line in FIG. 2 and a complete door position indicated by a two-dot chain line in FIG. 2 and attached to the other end 32 of the arm means 4 and 5. The door 6 that moves between the open positions, and the arm means 4 and 5 are elastically biased in the direction of jumping up (direction A) against the weight of the door 6 and the arm means 4 and 5. And a DC electric motor 9 connected to the arm means 4, and the arm means 4 and 5 are connected to the A based on the rotation of the output rotating shaft 11 of the DC electric motor 9. And arm turning means 12 for turning in the B direction, The door 6 that moves toward the fully open position by the rotation of the means 4 and 5 in the A direction arrives at the position just before the complete opening and the rotation of the arm means 4 and 5 in the B direction toward the fully closed position. At least one of the arrivals of the moving door 6 immediately before the fully closed door, in this example, the arrival detection means 14 for detecting both arrivals and the DC electric motor 9 to rotate the output rotating shaft 11 of the DC electric motor 9. A DC voltage controller 15 that applies a DC voltage to the motor 9 while canceling the application of the DC voltage to the DC electric motor 9 to stop the rotation of the output rotating shaft 11 of the DC electric motor 9, Of the prohibiting member 16 that prohibits movement toward the fully open position and the prohibition member 17 that prohibits movement of the door 6 toward the fully closed position at the fully closed position. On the other hand, in this example, the over-current from the DC voltage control unit 15 to the DC electric motor 9 generated when the movement prohibiting unit 18 has both and the movement prohibiting unit 18 prohibits the movement of the door 6 is used. The overcurrent detection unit 19 to detect and the DC voltage control unit 15 short-circuit the power transmission unit 20 to the DC electric motor 9 based on the release of the application of the DC voltage to the DC electric motor 9 while the DC voltage control unit 15 A short circuit 21 for releasing the short circuit based on the application of a DC voltage to the DC electric motor 9 by the control unit 15 and a forcible release operation unit 22 for forcibly releasing the short circuit by the short circuit 21 are provided.

  The flip-up gate 1 is provided with an operation unit 25 shown in FIG. 8 for opening and closing the door 6 and closing the door 6. The operation unit 25 includes an opening switch for causing the door 6 to perform an opening operation, a closing switch for causing the door 6 to perform a closing operation, and a stop switch for stopping the opening or closing operation of the door 6. Is provided. The DC voltage control unit 15 receives electrical signals based on the operation of each switch of the operation unit 25 and controls application of a DC voltage to the DC electric motor 9.

  The support column 2 accommodates an urging means 7, an arm rotation unit 12, a DC voltage control unit 15, a movement prohibition unit 18, an overcurrent detection unit 19, a power transmission unit 20, and a short circuit 21. The urging means configured similarly to the urging means 7 is accommodated. For example, as shown in FIGS. 2 and 7, a forcible release operation unit 22 is disposed on the surface of the column 2 facing the column 3. The forcible release operation unit 22 is electrically connected to the short circuit 21.

  The arm means 4 disposed on the column 2 side in the lateral direction is mounted on the column 2 at one end 31 via a rotation shaft 33 so as to be rotatable in the A and B directions in the vertical plane. An arm member 34 having a rectangular cross section fixed to the door 6 at the end 32 is provided. The arm member 34 is fixed to a rotating shaft 33, and the rotating shaft 33 is supported by the support column 2 via a bearing or the like so as to be rotatable. Since the arm means 5 disposed on the support column 3 side in the lateral direction is configured in the same manner as the arm means 4, detailed description thereof is omitted.

  The door 6 includes a frame 41 having a rectangular shape when viewed from the front and a large number of blind lattices 42 attached to the frame 41 for blindfolding. The door 6 may include a number of vertical lattices attached to the frame body 41 instead of the horizontal lattice 42. Further, a leg that abuts the ground in the fully closed position may be formed on the lower edge of the door 6. When such a leg is formed, a book disposed in the support column 2 may be formed. Even if the configuration of the prohibition member 17 in the example is omitted, the leg portion is configured as a prohibition member that prohibits the movement of the door 6 toward the fully closed position at the fully closed position, and thus the door 6 moved in the B direction. When the leg portion comes into contact with the ground when it reaches the fully closed position, the overcurrent detection unit 19 can detect an overcurrent generated based on the contact between the leg portion of the door 6 and the ground.

  In the flip-up type gate 1 of this example, the biasing means 7, the arm turning means 12, the arrival detecting means 14, the DC voltage control section 15, the movement prohibiting means 18, the overcurrent detection section 19, the power transmission section 20, and the short circuit. The urging means (not shown) configured in the same manner as the urging means 7 is provided on the support column 2 side and the urging means (not shown) on the support column 3 side. The arm rotating means having the same configuration as the arm rotating means 12 is also provided on the support column 3 side, and both arm rotating means 12 are connected to the DC voltage control unit 15, the overcurrent detection unit 19, and the short circuit on the support column 2 side. 21 may be operated in synchronization with each other, or may be configured by providing an urging means only on one of the columns 2 and 3 side. In this case, the columns 2 and 3 Arm rotation means is provided only on one of the sides It may be. The urging means (not shown) provided on the column 3 side is configured in the same manner as the urging means 7 and will not be described in detail.

  As shown in FIGS. 3 to 5, for example, the biasing means 7 includes a cam plate 51 fixed to the rotating shaft 33, one end 52 connected to the cam plate 51 via a pin, and an intermediate portion 53 as a cam. A chain member 57 that is bent and guided in contact with the cam edge 54 of the plate 51 and whose other end 55 is rotatably connected to a connector 56 via a pin, and one end 61 is formed in the hole 62 of the connector 56. The coil spring 67 is hooked and the other end 63 is hooked in the hole 66 of the connector 65 attached to the column 2. The coil spring 67 urges the cam plate 51 to rotate in the A direction by its contraction elastic force.

  For example, as shown in FIG. 3, the arm rotation means 12 includes the DC electric motor 9 and a transmission means 71 that transmits the rotation of the output rotating shaft 11 of the DC electric motor 9 to the arm means 4. In this example, the DC electric motor 9 is a DC brush motor mounted on the support column 2 and is electrically connected to the DC voltage control unit 15 via a power transmission unit 20 including two power transmission lines. The direction of rotation of the output rotation shaft of the DC electric motor 9 is controlled by the DC voltage control unit 15. In this example, the transmission means 71 transmits the rotational force of the output rotary shaft 11 of the DC electric motor 9 to the arm means 4 as the rotational force in the A direction, and the reverse rotational force of the output rotary shaft 11 of the DC electric motor 9. Is provided between the DC electric motor 9 and the arm means 4 so as to transmit the power to the arm means 4 as the rotational force in the B direction.

  The transmission means 71 is fixed to the rotating shaft 72 connected to the output rotating shaft 11 of the DC electric motor 9, the spiral gear 73 and the rotating shaft 33 provided on the rotating shaft 72, and meshed with the spiral gear 73. And a reduction gear mechanism 76 having a gear 75 formed on the periphery thereof. Such a transmission means 71 decelerates the rotation of the output rotation shaft of the DC electric motor 9 via the speed reduction mechanism 76 and transmits it to the rotation shaft 33 as the rotational force in the A and B directions. Note that the speed reduction mechanism 76 may include a tooth row 74 formed on the peripheral edge located on the spiral gear 73 side of the cam plate 51 instead of the gear 75.

  For example, as shown in FIG. 6, the arrival detection means 14 is attached to the support plate 2 and the circular plate 82 which is fixed to the rotating shaft 33 and integrally formed with the arc projection 81, and is provided with an arm. When the door 6 that moves toward the fully opened position by the rotation of the means 4 and 5 in the A direction arrives at the position just before the fully opened door, the door 6 is brought into contact with the arc projection 81 to operate completely. A limit switch 83 as an arrival detection unit that detects arrival at a position immediately before opening the door, and a door that is attached to the column 2 and moves toward the fully closed position by the rotation of the arm means 4 and 5 in the B direction. When 6 arrives at the fully closed position, it is provided with a limit switch 84 as an arrival detecting unit that detects the arrival of the door 6 at a position immediately before the fully closed door by operating in contact with the arc projection 81. . In this example, the limit switch 83 is in contact with the arc projection 81 when the door 6 is moved in the A direction and is disposed, for example, at a position 10 degrees before the fully opened position (position immediately before the fully opened door). It is arranged to operate and to maintain the operation until the door 6 reaches the fully open position. In this example, the limit switch 84 operates by abutting against the arc projection 81 when the door 6 is moved in the B direction and is disposed, for example, at a position 10 degrees before the fully closed position (position immediately before the fully closed door). And it arrange | positions so that the said operation | movement may be maintained until the door 6 reaches a fully closed position. The operation of the limit switch 83 due to contact with the arc projection 81 is sent to the DC voltage control unit 15 as an arrival detection signal of the door 6 at a position immediately before full opening, and the limit switch due to contact with the arc projection 81 is sent. The operation 84 is sent to the DC voltage controller 15 as an arrival detection signal of the door 6 at a position immediately before the door is completely closed.

  The prohibiting member 16 is formed on the support 2 and includes a stopper that contacts the cam plate 51 so as to prohibit the movement of the door 6 in the A direction when the door 6 is disposed at the fully open position. The prohibiting member 17 is formed on the support 2 and includes a stopper that abuts the cam plate 51 so as to prohibit the movement of the door 6 in the B direction when the door 6 is disposed at the fully closed position. In addition, when the door 6 arranged at the fully closed position comes into contact with the ground, the movement prohibiting means 18 is configured so that the part of the contacted door 6 is used as a prohibited member instead of or in addition to the prohibited member 17. Also good.

  The DC voltage control unit 15, the overcurrent detection unit 19, and the short circuit 21 are accommodated in a housing 90 attached to the support 2.

  For example, as shown in FIG. 8, the overcurrent detection unit 19 includes an ammeter disposed in the power transmission unit 20 between the DC voltage control unit 15 and the DC electric motor 9, and at least a current set as an overcurrent value. When a value greater than the value is detected, an overcurrent detection signal is sent to the DC voltage controller 15.

  The DC voltage control unit 15 is electrically connected to a DC power supply (not shown), an overcurrent detection unit 19, a forced release operation unit 22, an operation unit 25, the arrival detection unit 14, and the DC electric motor 9. For example, as shown in FIG. 8, the DC voltage control unit 15 selects a DC voltage value for the DC electric motor 9 based on each operation and detection signal from the operation unit 25, the arrival detection unit 14, and the overcurrent detection unit 19. A selection circuit 91 and a drive circuit 92 that drives the DC electric motor 9 based on a selection result by the selection circuit 91 are provided. In this example, the selection circuit 91 selects any DC voltage value of DC22V, DC14V to DC10V, and DC0V, and the drive circuit 92 uses the DC voltage value selected by the selection circuit 91 to generate a DC voltage. A DC voltage is applied to the electric motor 9. When DC0V is selected in the selection circuit 91, the value of the DC voltage applied to the DC electric motor 9 of the drive circuit 92 is DC0V. As a result, the application of the DC voltage to the DC electric motor 9 is released. . Further, the drive circuit 92 has a bridge circuit, and the output rotation of the DC electric motor 9 is transmitted to the DC electric motor 9 via the bridge circuit based on the opening signal by the operation of the opening switch of the operation unit 25. A DC voltage for rotating the shaft 11 forward is applied, while a DC voltage for reversing the output rotation shaft 11 of the DC electric motor 9 is applied based on a closing signal generated by operating a closing switch of the operation unit 25. It has become.

  The selection circuit 91 selects DC22V as a DC voltage value for causing the DC electric motor 9 to rotate in the forward direction when receiving an opening signal by operating the opening switch of the operation unit 25. In such a case, upon receiving the arrival detection signal from the limit switch 83, the arm means after the door 6 moving toward the fully opened position by the rotation of the arm means 4 in the A direction after the arrival at the position immediately before the fully opened door. In order to reduce the rotational speed of 4, the DC voltage value for forward rotation of the DC electric motor 9 is selected to be a value lower than the selected DC 22V, for example, DC 14V to DC 10V, here DC 14V. As a result of this selection, the DC voltage applied from the drive circuit 92 to the DC electric motor 9 is stepped down from DC 22V to DC 14V. The selection circuit 91 selects DC 22V as a DC voltage value for reversing the DC electric motor 9 when receiving a closing signal by operating the closing switch of the operation unit 25. In such a case, when the arrival detection signal from the limit switch 84 is received, the arm means 4 after the arrival of the door 6 moving toward the fully closed position by the rotation of the arm means 4 in the B direction to the position immediately before the fully closed position. In order to reduce the rotation speed, a value lower than the selected DC22V, for example, DC14V to DC10V, in this case, DC14V, is selected as the DC voltage value for reversing the DC electric motor 9. As a result of this selection, the DC voltage applied from the drive circuit 92 to the DC electric motor 9 is stepped down from DC 22V to DC 14V. The selection circuit 91 selects DC0V as a DC voltage value for stopping the rotation of the DC electric motor 9 when receiving a stop signal by operating the stop switch of the operation unit 25. As a result of this selection, the application of the DC voltage from the drive circuit 92 to the DC electric motor 9 is cancelled. When the selection circuit 91 receives an overcurrent detection signal from the overcurrent detection unit 19 in a selection state of DC22V or DC14V as a DC voltage value for forward or reverse rotation of the DC electric motor 9, the selection circuit 91 sets DC0V as the DC voltage value. Select. As a result of this selection, the movement of the door 6 due to the rotation of the arm means 4 and 5 in the A and B directions can be stopped at the fully open position and the fully closed position, and between the fully open position and the fully closed position. The movement of the door 6 can be stopped even when an unintended resistance force against the movement of the door 6 that moves is generated.

  For example, as shown in FIG. 8, the short circuit 21 is disposed between the DC voltage control unit 15 and the DC electric motor 9, and is based on cancellation of application of a DC voltage from the DC voltage control unit 15 to the DC electric motor 9. The power transmission unit 20 composed of two power transmission lines is short-circuited. The short circuit 21 determines that the application of the DC voltage to the DC electric motor 9 from the DC voltage control unit 15 is canceled when the DC voltage value applied to the DC electric motor 9 from the drive circuit 92 becomes DC 0 V, and transmits the power. 20 is short-circuited. The short circuit 21 maintains the short-circuit state of the power transmission unit 20 with respect to the DC electric motor 9 of the DC voltage control unit 15 from the start to the end of cancellation of application of the DC voltage to the DC electric motor 9 by the DC voltage control unit 15. Further, the short circuit 21 is provided when the DC voltage value applied from the drive circuit 92 to the DC voltage motor 9 becomes a value larger than DC0V (for example, DC22V, DC14V, etc.), or the opening signal or closing signal from the operation unit 25. Based on the above, it is determined that the DC voltage is applied to the DC electric motor 9 from the DC voltage control unit 15 and the short circuit of the power transmission unit 20 is released. The short circuit 21 maintains the short-circuit release state of the power transmission unit 20 with respect to the DC electric motor 9 of the DC voltage control unit 15 from the start to the end of application of the DC voltage to the DC electric motor 9 by the DC voltage control unit 15. ing. The short circuit 21 forcibly releases the short circuit when it receives a forcible release signal by the operation of the forcible release operation unit 22 while the power transmission unit 20 is short-circuited. In addition, when the supply of current from the power source or the application of voltage to the DC voltage control unit 15 is stopped due to a power failure or the like, the short circuit 21 is based on the stop of supply of the current or the stop of application of the voltage. The short circuit is forcibly released.

  Hereinafter, the operation of the flip-up gate 1 of this example will be described. FIG. 9 is a time chart relating to control of movement, stop and braking of the door 6 of the flip-up gate 1. In FIG. 9, “input voltage value” means a DC voltage value input (applied) to the DC electric motor 9 from the DC voltage control unit 15, and “limit switch (open)” means a limit switch 83. , “Limit switch (closed)” means the limit switch 84, and “current value (overcurrent value)” means a current value (including an overcurrent value) detected by the overcurrent detection unit 19, “Short circuit” means the short circuit of the power transmission unit 20 by the short circuit 21, “Motor rotation” means the rotation of the DC electric motor 9, and “Full open” means the fully open state of the flip-up gate 1. “Fully closed” means that the flip-up gate 1 is fully closed. Each of the limit switches 83 and 84 is turned on (ON) by contact with the arc projection 81, and is turned off (OFF) by separation from the arc projection 81. The short circuit 21 is in a state in which the power transmission unit 20 is short-circuited in the on (ON) state, and is in a state in which the short circuit of the power transmission unit 20 is canceled in the off (OFF) state.

  When an opening signal is input to the DC voltage control unit 15 based on the operation of the opening switch of the operation unit 25, the selection circuit 91 selects DC 22V as the DC voltage value for causing the DC electric motor 9 to rotate forward, The drive circuit 92 adjusts the DC voltage from the DC power supply to DC22V based on the opening signal and the selection result, and applies it to the DC electric motor 9. The short circuit 21 cancels the short circuit of the power transmission unit 20 based on the opening signal. Thus, the output rotating shaft 11 of the DC electric motor 9 to which the DC voltage is applied rotates in the normal direction at 1100 rpm, and the rotating shaft 33 is rotated in the A direction via the transmission means 71, and the arm means 4 is rotated by this rotation. The cam plate 51 and the disc 82 are rotated or rotated in the A direction. The door 6 in the fully closed position indicated by the solid line in FIG. 2 moves toward the fully open position of the door 6 indicated by the two-dot chain line in FIG. 2 by the rotation of the arm means 4 in the A direction. In this movement, the DC current supplied to the DC electric motor 9 is 1.5 A in this example. The biasing force in the spring-up direction of the coil spring 67 biased to the arm means 4 and 5 and the door 6 via the cam plate 51 and the chain member 57 by the rotation of the arm means 4 in the A direction is the coil spring 67. Decrease gradually due to shrinkage. In this example, the arm means 5 is rotated in the A direction by transmitting the rotation of the arm means 4 in the A direction via the door 6, but the DC electric motor rotated synchronously with the DC electric motor 9. It may be rotated in the A direction by other arm rotating means having a motor.

  When the arc projection 81 of the disk 82 comes into contact with the limit switch 83 due to the rotation of the arm means 4 in the A direction, the limit switch 83 is activated to detect the arrival of the door 6 at a position immediately before full opening. When an arrival detection signal from the limit switch 83 to the position immediately before the door 6 is fully opened is input to the DC voltage control unit 15, the selection circuit 91 selects DC 14 V as the DC voltage value for causing the DC electric motor 9 to rotate forward. Then, the drive circuit 92 steps down the direct-current voltage from the direct-current power source to DC 14 V based on the selection result and applies it to the direct-current electric motor 9. Thus, the output rotating shaft 11 of the DC electric motor 9 to which the DC voltage is applied rotates in the forward direction at 700 rpm, and thus the rotation speed of the arm means 4 in the A direction is reduced. In this example, the DC current supplied to the DC electric motor 9 at the time of forward rotation at 700 rpm is 0.9A.

  When the door 6 is disposed at the fully open position by the rotation of the arm means 4 in the A direction, the cam plate 51 comes into contact with the prohibiting member 16 as shown in FIG. Is prohibited, and based on this prohibition, the overcurrent detector 19 detects an overcurrent. When an overcurrent detection signal is input from the overcurrent detection unit 19 to the DC voltage control unit 15, the selection circuit 91 selects DC0V as the DC voltage value, and the drive circuit 92 selects the DC electric motor 9 based on the selection result. The short circuit 21 short-circuits the power transmission unit 20 based on the cancellation of the direct voltage application, and a braking force is applied to the door 6 by this short circuit. In this way, the door 6 is moved from the fully closed position to the fully opened position and is stationary.

  When a closing signal is input to the DC voltage control unit 15 based on the operation of the closing switch of the operation unit 25, the selection circuit 91 selects DC 22V as the DC voltage value for reversing the DC electric motor 9, and the drive circuit 92 Adjusts the DC voltage from the DC power supply to DC22V based on the closing signal and the result of the selection and applies it to the DC electric motor 9. The short circuit 21 cancels the short circuit of the power transmission unit 20 based on the door closing signal. Thus, the output rotating shaft 11 of the DC electric motor 9 to which the DC voltage is applied reverses at 1100 rpm, and the rotating shaft 33 is rotated in the B direction via the transmission means 71, and by this rotation, the arm means 4, The cam plate 51 and the disc 82 are rotated or rotated in the B direction. The door 6 in the fully opened position moves toward the fully closed position by such rotation of the arm means 4 in the B direction. In this example, the direct current supplied to the DC electric motor 9 in such movement is 2.0 A in this example due to the relationship with the gradual increase of the urging force in the spring-up direction based on the extension of the coil spring 67. In this example, the arm means 5 is rotated in the B direction by transmitting the rotation of the arm means 4 in the B direction through the door 6.

  When the arc projection 81 of the disc 82 abuts on the limit switch 84 due to the rotation of the arm means 4 in the B direction, the limit switch 84 is activated to detect the arrival of the door 6 at a position immediately before the fully closed door. When an arrival detection signal from the limit switch 84 to the position immediately before the door 6 is completely closed is input to the DC voltage control unit 15, the selection circuit 91 selects DC 14 V as the DC voltage value for reversing the DC electric motor 9, The drive circuit 92 steps down the direct current voltage from the direct current power source to DC 14 V based on the selection result, and applies it to the direct current electric motor 9. Thus, the output rotating shaft 11 of the DC electric motor 9 to which the DC voltage is applied reverses at 700 rpm, and thus the rotation speed of the arm means 4 in the B direction is reduced. In this example, the direct current supplied to the direct current electric motor 9 at the time of reverse rotation at 700 rpm is 0.9 A.

  When the door 6 is arranged at the fully closed position by the rotation of the arm means 4 in the B direction, the cam plate 51 comes into contact with the prohibiting member 17 as shown in FIG. The rotation is prohibited, and based on this prohibition, the overcurrent detection unit 19 detects an overcurrent. When an overcurrent detection signal is input from the overcurrent detection unit 19 to the DC voltage control unit 15, the selection circuit 91 selects DC0V as the DC voltage value, and the drive circuit 92 selects the DC electric motor 9 based on the selection result. The short circuit 21 short-circuits the power transmission unit 20 based on the cancellation of the direct voltage application, and a braking force is applied to the door 6 by this short circuit. In this way, the door 6 is moved from the fully open position to the fully closed position and is stationary.

  When the door 6 is moved, if a stop signal is input to the DC voltage control unit 15 based on the operation of the stop switch of the operation unit 25, the selection circuit 91 causes the DC voltage value to stop the rotation of the DC electric motor 9 DC0V is selected, the drive circuit 92 cancels the application of the DC voltage to the DC electric motor 9 based on the selection result, and the short circuit 21 shorts the power transmission unit 20 based on the cancellation of the application of the DC voltage. Thus, a braking force is applied to the door 6 and thus the position of the door 6 is maintained.

  According to the flip-up type gate 1 of this example, the support columns 2 and 3, and the arm means 4 and 5 supported by the support columns 2 and 3 at one end 31 so as to be rotatable in the A and B directions in the vertical plane; The door 6 is attached to the other end 32 of the arm means 4 and 5 and moves between the fully open position and the fully closed position by the rotation of the arm means 4 and 5, and the direct current connected to the arm means 4. An arm rotating means 12 that has an electric motor 9 and rotates the arm means 4 based on the rotation of the output rotating shaft 11 of the DC electric motor 9 and the output rotating shaft 11 of the DC electric motor 9 are rotated. A DC voltage controller 15 for applying a DC voltage to the DC electric motor 9 and canceling the application of the DC voltage to the DC electric motor 9 to stop the rotation of the output rotating shaft 11 of the DC electric motor 9. , On the basis of the cancellation of the application of the DC voltage to the DC electric motor 9 by the current voltage control unit 15, the power transmission unit 20 for the DC electric motor 9 of the DC voltage control unit 15 is short-circuited, while the DC voltage control unit 15 applies the DC voltage to the DC electric motor 9. Since the short circuit 21 for releasing the short circuit based on the application of the DC voltage is provided, the braking force can be quickly applied to the door 6 when the movement of the door 6 is stopped. The unintentional opening / closing operation of the door 6 can be prevented more reliably, and the flip-up gate 1 is provided with the speed reduction mechanism 76, so that it is more effective due to a short circuit by the short circuit 21. Thus, a braking force can be applied to the door 6.

  According to the flip-up type gate 1, the prohibition member 16 that prohibits the movement of the door 6 toward the fully open position and the movement of the door 6 toward the fully closed position is prohibited at the fully closed position. The movement prohibiting means 18 having at least one of the members 17 and the overcurrent from the DC voltage control unit 15 to the DC electric motor 9 generated when the movement prohibiting means 18 prohibits the movement of the door 6 are detected. And the DC voltage control unit 15 cancels the application of the DC voltage to the DC electric motor 9 based on the detection of the overcurrent by the overcurrent detection unit 19. Therefore, the desired full opening and full closing can be performed without creating a gap between the door 6 and the like and the ground or the movement prohibiting means 18.

  According to the flip-up type gate 1, the forcible release operation unit 22 that forcibly releases the short circuit by the short circuit 21 is provided, so that the short circuit by the short circuit 21 is forcibly released by the operation of the forcible release operation unit 22. Thus, for example, the door 6 can be easily opened and closed manually.

  According to the flip-up type gate 1, the door 6 moving toward the fully opened position by the rotation of the arm means 4 in the A direction and the arrival of the door 6 immediately before the complete opening and the rotation of the arm means 4 in the B direction. An arrival detection means 14 for detecting arrival of at least one of arrivals of the door 6 moving toward the fully closed position to a position immediately before the fully closed position is provided. Of the door 6 that moves toward the fully open position by turning in the direction toward the fully closed position due to the turning speed of the arm means 4 and the turn in the B direction of the arm means 4 after reaching the position immediately before the fully opened door. In order to decrease the rotational speed of at least one of the rotational speeds of the arm means 4 after the moving door 6 arrives at the position immediately before the fully closed door, the arrival detecting means 14 moves to the position immediately before the door 6 is fully opened. Arrival and door Since the DC voltage applied to the DC electric motor 9 is stepped down based on the detection of the arrival of at least one of the arrivals at the position immediately before the fully-closed door, the DC voltage control unit 15 reduces the DC voltage. The door 6 can be opened and closed more smoothly by the control of the DC electric motor 9 based on the application and release thereof, and the door 6 is fully opened by the step-down of the DC voltage applied to the DC electric motor 9 based on the detection by the arrival detection means 14. It is possible to more reliably avoid a collision with the ground such as the door 6 or the stopper or the like when the door is completely closed, thus preventing an unpleasant collision noise and a decrease in life due to the collision. Further, according to such a flip-up type gate 1, for example, compared with a flip-up type gate (not shown) provided with an arm turning means for turning the arm means by an AC electric motor (induction motor) The rotational speed of the output rotating shaft 11 of the electric motor 9 can be adjusted smoothly.

It is a perspective explanatory view of an example of an embodiment of the invention. It is side view explanatory drawing of the example shown in FIG. FIG. 2 is a side cross-sectional explanatory view mainly showing a column of the example shown in FIG. 1. FIG. 2 is a side cross-sectional explanatory view mainly showing a column of the example shown in FIG. 1. FIG. 2 is a plan view cross-sectional explanatory diagram mainly illustrating a column of the example illustrated in FIG. 1. It is explanatory drawing mainly of an arrival detection means of the example shown in FIG. It is a partial perspective explanatory view of the example shown in FIG. FIG. 2 is a block explanatory diagram mainly relating to a DC voltage control unit in the example illustrated in FIG. 1. It is explanatory drawing regarding the opening / closing control of the door of the example shown in FIG. FIG. 2 is a partially enlarged operation explanatory view of the example shown in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bounce-up type gate 2, 3 Support | pillar 4, 5 Arm means 6 Door 9 DC electric motor 12 Arm rotation means 14 Arrival detection means 15 DC voltage control part 19 Overcurrent detection part 21 Short circuit

Claims (5)

  A supporting column, arm means supported by the supporting column at one end so as to be rotatable in a vertical plane, and attached to the other end portion of the arm means, and the fully opened position and the completely closed door by the rotation of the arm means. A door that moves between positions, a DC electric motor connected to the arm means, and an arm rotating means for rotating the arm means based on rotation of an output rotation shaft of the DC electric motor; A direct current voltage is applied to the direct current electric motor to rotate the output rotation shaft of the electric motor, while a direct current voltage is applied to the direct current electric motor to stop the rotation of the output rotation shaft of the direct current motor. Short-circuiting the power transmission unit to the DC electric motor of the DC voltage control unit based on the release of the application of the DC voltage to the DC electric motor by the voltage control unit and the DC voltage control unit On the other hand, flip-up gates are provided with a short circuit for releasing the short circuit based on the application of the DC voltage for a DC electric motor by the DC voltage controller.   Movement that includes at least one of a prohibiting member that prohibits movement of the door toward the fully open position at the fully open position and a prohibiting member that prohibits movement of the door toward the fully closed position at the fully closed position. And an overcurrent detection unit that detects an overcurrent from the DC voltage control unit to the DC electric motor that is generated when the movement of the door is prohibited by the movement prohibition unit. 2. The flip-up gate according to claim 1, wherein application of a DC voltage to the DC electric motor is canceled based on detection of an overcurrent by an overcurrent detection unit.   The short circuit maintains the short-circuit state of the power transmission unit with respect to the DC electric motor of the DC voltage control unit from the start to the end of release of the application of the DC voltage to the DC electric motor by the DC voltage control unit, while the DC voltage control unit The flip-up gate according to claim 1 or 2, wherein the short-circuit release state of the power transmission unit with respect to the DC electric motor of the DC voltage control unit is maintained from the start to the end of application of the DC voltage to the electric motor.   The flip-up type gate according to any one of claims 1 to 3, further comprising a forcible release operation unit that forcibly releases a short circuit caused by the short circuit.   5. The urging means for urging the arm means elastically to urge the door in the direction of flipping up against the dead weight of the door and arm means. The flip-up gate described.

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