JP4508735B2 - Automatic door drive device - Google Patents

Description

  The present invention relates to an automatic door drive device, and more particularly, to an automatic door drive device that can improve the accuracy and flexibility of safety devices such as a speed reducer and an automatic stop device.

At present, nuclear families and aging in Japan are increasing, and the number of elderly people living alone and those living with disabilities are also increasing.
Although it is difficult for people with disabilities to push and open the door, it is difficult to turn and close the door. Therefore, the door is reformed into a sliding door, and an automatic door driving device is attached to the sliding door to make an automatic door.

As a conventional automatic door drive device, for example, one described in Patent Document 1 below is known.
This automatic door driving device is constructed by installing a transmission belt on pulleys arranged at predetermined intervals, fixing a coupling fitting fixed to the transmission belt to the sliding door, and rotating the pulley with a motor, thereby driving the sliding door. Like to get.

JP 2001-355376 A

  By the way, in such an automatic door drive device, a reduction device that decelerates the sliding door before closing and an automatic stop device that stops the sliding door when colliding with a person or an object are necessary. Since the deceleration position sensor that detects the position of the vehicle and determines the deceleration timing is fixed at a fixed position, there is a problem that the deceleration start position of the sliding door is limited.

  In addition, some automatic stop devices were used to detect a sudden increase in current using the increase or decrease in current due to fluctuations in the load of the DC motor and sense that the sliding door had collided. There was a problem that it could not be detected and felt a lot of pain when it collided.

  An object of the present invention is to provide an automatic door drive device that can improve the accuracy and flexibility of a safety device such as a speed reducer and an automatic stop device in view of the problems of the conventional automatic door drive device. To do.

To achieve the above object, the automatic door drive device of the present onset Ming is provided with a drive mechanism for opening and closing the sliding door, comprising a Sensapuri rotated by the wire driving the sliding door, and an encoder for detecting a rotational speed of said Sensapuri The frame includes a collision sensor configured to detect a collision of the sliding door, and the frame supporting the drive mechanism is formed with a rib along the moving direction of the sliding door, and a protrusion is formed at the tip of the rib. In an automatic door drive apparatus in which a clip that is slidably fitted to the bridging rib is provided and a deceleration position sensor that detects the position of the sliding door and determines the timing of deceleration is attached to the clip, the deceleration position sensor is disposed on the sliding door. It consists of a light reflection sensor that detects the passage of the object to be detected by light reflection, and sandwiches the passage of the object to be detected at a position facing the light reflection sensor of the clip. Characterized in that a non-reflective plate of the reflection sensor.

  In this case, it is possible to detect that the sliding door has suddenly decelerated due to a decrease in the rotation speed of the sensor pulley of the collision sensor, and to stop or move the sliding door in the reverse direction.

  According to the automatic door driving device of the present invention, in the automatic door driving device including the driving mechanism for opening and closing the sliding door and the collision sensor for detecting the collision of the sliding door, the collision sensor is rotated by the wire for driving the sliding door. And the encoder that detects the rotation speed of the sensor pulley, the sliding door speed that is reduced by the collision can be detected from the drive wire by the encoder via the sensor pulley. The detection accuracy can be improved and the safety can be increased.

Then , a rib is formed on the frame that supports the drive mechanism along the moving direction of the sliding door, a ridge is formed at the tip of the rib, and a clip that is slidably fitted to the rib across the ridge. By installing a deceleration position sensor that detects the position of the sliding door and determines the timing of deceleration on the clip, the clip that fits the rib across the ridge does not tilt or disengage the deceleration position sensor. Thus, the position of the deceleration position sensor can be freely set and the deceleration start position of the sliding door can be changed.

In particular , the deceleration position sensor is composed of a light reflection sensor that detects the passage of the detection object disposed on the sliding door by light reflection, and the passage of the detection object is sandwiched between the clip and the light reflection sensor. By providing the non-reflective plate of the light reflection sensor, the environment can be made constant at any moving position, and the deceleration position sensor can detect the position of the sliding door regardless of the surrounding situation.

  Embodiments of the automatic door driving device of the present invention will be described below with reference to the drawings.

  1 to 6 show an embodiment of an automatic door driving device of the present invention.

As shown in FIGS. 1 to 2, the automatic door driving device is attached to the Kamoi K and uses the sliding door D as an automatic door. The automatic door driving device includes the driving mechanism 1 that opens and closes the sliding door D, and the position of the sliding door D. Is provided, and a deceleration position sensor 2 that determines the timing of deceleration and a collision sensor 3 that detects a collision of the sliding door D are provided.
As shown in FIG. 3, this automatic door drive device forms a rib 5 on the frame 4 that supports the drive mechanism 1 along the moving direction of the sliding door D, and a protrusion 51 is formed at the tip of the rib 5. The clip 6 is formed so as to be slidably fitted to the rib 5 across the protrusion 51, and the deceleration position sensor 2 is attached to the clip 6.
Further, as shown in FIG. 4, the automatic door driving device includes a sensor pulley 31 that rotates the collision sensor 3 by a wire 7 that drives the sliding door D, and an encoder 32 that detects the number of rotations of the sensor pulley 31. It is configured.

As shown in FIGS. 1 to 2, the drive mechanism 1 hangs a wire 7 on a pulley 8 disposed at a predetermined interval, and fixes a coupling fitting 9 fixed to the wire 7 to a sliding door D. Is driven by the motor 10 to obtain the driving force of the sliding door D.
In this case, by using the wire 7 for the drive mechanism 1, the cost is reduced as compared with the timing belt and the drive mechanism 1 is downsized.

As shown in FIG. 3, the deceleration position sensor 2 is composed of a light reflection sensor. When the coupling bracket 9 of the sliding door D is detected and the coupling bracket 9 is detected, the microcomputer of the control plate 11 is connected to the motor 10. Instruct the deceleration.
In front of the passing path 64 of the detected object of the deceleration position sensor 2, that is, across the passing path 64 of the detected object with respect to the light reflection sensor 2, the position from the light emitting unit of the sensor 2 A non-reflective plate 61 that does not reflect light to the light receiving portion is provided integrally with the clip 6.
The clip 6 is made of an elastic metal or synthetic resin, and includes a U-shaped sandwiching portion 62 that slidably fits on the rib 5 across the protrusion 51, and a tongue piece below the sandwiching portion 62. And a fixed portion 63 of the deceleration position sensor 2 and the non-reflecting plate 61 are formed.

As shown in FIG. 4, the collision sensor 3 outputs a pulse having a frequency proportional to the moving speed of the sliding door D, and detects that the pulse frequency decreases when the sliding door D suddenly decelerates (collision) during movement. Then, it operates as a sensor for processing such as stopping the sliding door D or moving it in the reverse direction.
While the sliding door D is moving, the sensor pulley 31 is rotated by the drive wire 7, and a pulse train is output by the movement of the slit of the slit plate 33 rotated by the sensor pulley 31.
By monitoring this frequency and confirming the ratio with respect to the drive speed, a change in the ratio due to the speed fluctuation of the sliding door D is checked.
In the collision sensor 3 of the present embodiment, since a collision can be detected without attaching a sensor or the like to the sliding door D, it is possible to easily cope with retrofitting.
In the control, the microcomputer always compares the speed instruction value for the motor 10 with the wire speed obtained from the encoder 32, and monitors the collision during the closing operation.
And even in the normal opening / closing operation of the sliding door D, the position adjustment of the conventional stop position sensor can be omitted by performing the stop operation by hitting to the closing stop at the time of closing and the opening stop at the time of opening. Subtle adjustments are not required just by setting the deceleration position.

Thus, according to the automatic door driving apparatus of the present embodiment, in the automatic door driving apparatus including the driving mechanism 1 that opens and closes the sliding door D, and the deceleration position sensor 2 that detects the position of the sliding door D and determines the timing of deceleration. A rib 5 is formed on the frame 4 that supports the drive mechanism 1 along the moving direction of the sliding door D, and a protrusion 51 is formed at the tip of the rib 5, and the rib 5 is slid over the protrusion 51. Since the clip 6 that can be fitted is provided and the deceleration position sensor 2 is attached to the clip 6, the deceleration position sensor 2 is tilted or detached by the clip 6 that straddles the protrusion 51 and is fitted to the rib 5. The position of the deceleration position sensor 2 can be freely set and the deceleration start position of the sliding door D can be changed.
In this case, by providing the clip 6 with the non-reflecting plate 61 of the sensor 2 in front of the passage 64 of the detection object of the deceleration position sensor 2, the environment is constant at any moving position, and the deceleration position sensor 2 is The position of the sliding door D can be detected regardless of the situation.

  Further, the collision sensor 3 that detects the collision of the sliding door D includes the sensor pulley 31 that is rotated by the wire 7 that drives the sliding door D, and the encoder 32 that detects the number of rotations of the sensor pulley 31. The decreasing speed of the sliding door D can be detected by the encoder 32 from the drive wire 7 via the sensor pulley 31, thereby improving the collision detection accuracy and enhancing the safety.

  As mentioned above, although the automatic door drive device of the present invention was explained based on the example, the present invention is not limited to the composition indicated in the above-mentioned example, and the composition is suitably changed in the range which does not deviate from the meaning. Can be changed.

  Since the automatic door drive device of the present invention has the characteristic of improving the accuracy and flexibility of safety devices such as a speed reducer and an automatic stop device, for example, an automatic door drive that is retrofitted to an existing sliding door In addition to being suitable for use as a device, it can also be used as an automatic door drive device for a newly installed sliding door.

1 is an overall view showing an embodiment of an automatic door driving device of the present invention. The automatic door drive device of the Example is shown, (a) is a sectional front view, (b) is a sectional side view, (c) is a plan view of a coupling fitting. It is sectional drawing which shows a deceleration position sensor. A collision sensor is shown, (a) is a rear view, (b) is a plan view. The automatic door drive device of the Example is shown, (a) is a cross-sectional plan view of the left half, (b) is a cross-sectional side view, (c) is a cross-sectional front view of the left half, and (d) is a cross-sectional side view. (E) is a sectional bottom view of the left half, and (f) is a sectional side view of the same. The automatic door drive device of the Example is shown, (a) is a right half sectional plan view, (b) is a right half sectional front view, and (c) is a right half sectional bottom view.

DESCRIPTION OF SYMBOLS 1 Drive mechanism 2 Deceleration position sensor 3 Collision sensor 31 Sensor pulley 32 Encoder 33 Slit plate 4 Frame 5 Rib 51 Projection 6 Clip 61 Non-reflective plate 62 Nipping part 63 Fixing part 64 Passing path 7 Wire 8 Pulley 9 Coupling metal 10 Motor 11 Control Board D Sliding door K Kamoi

Claims (2)

A driving mechanism that opens and closes the sliding door, a sensor pulley that is rotated by a wire that drives the sliding door, and an encoder that detects a collision of the sliding door that includes an encoder that detects the rotation speed of the sensor pulley ; A rib is formed on the supporting frame along the moving direction of the sliding door, a ridge is formed at the tip of the rib, and a clip that slidably fits over the ridge is provided on the rib. In an automatic door driving device equipped with a deceleration position sensor that detects the position of the sliding door and determines the timing of deceleration , the deceleration position sensor is a light reflection sensor that detects the passage of the detected object disposed on the sliding door by light reflection. becomes, the light reflective sensor facing the position of the clip, an automatic de, characterized in that across the passing path of object to be detected, provided a non-reflective plate of the light-reflecting sensor Drive.   2. The automatic door driving device according to claim 1, wherein the sliding door is detected to have suddenly decelerated due to a decrease in the rotational speed of the sensor pulley of the collision sensor, and the sliding door is stopped or moved in the reverse direction.

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