JP3744523B2 - Automatic opening and closing device for joinery - Google Patents

Description

  The present invention relates to an automatic opening / closing device for a fitting that is opened and closed by a linear DC motor for a fitting that is slidable along a groove of the headquarters.

  The stator of the movable coil linear motor is disposed on the upper end surface of the fitting that can slide along the groove of the Kamoi, and the movable element that is movable relative to the stator is fixed to the groove of the Kamoi. In the automatic opening / closing device, as shown in FIGS. 3A and 3B, the stator m and the movable element n always correspond to each other when the fitting Y is in either the closed end position or the open end position. There is.

For this reason, in the case of FIG. 3A, if the width dimension of the doorway X and the fitting Y that opens and closes the doorway X are made equal, a remaining margin for the length of the movable element n fixed to the head when the door is fully opened occurs. The opening width is narrowed. In the case of FIG. 3 (b), a wide joinery Y that is longer than the entrance / exit X by the length of the mover n is used to prevent a pull-out margin when fully opened. Since the frame member is a non-standard dedicated product, the cost is increased. In addition, there is a method of using two movers n, but the product cost increases.
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  The present invention has been made in view of the above problems, and an object thereof is to provide an automatic opening / closing device for a joinery that can open and close an entrance / exit while minimizing a remaining margin without using a dedicated product for the joinery or the like. To do.

  The automatic opening and closing device for a joinery according to claim 1 for achieving the above object, wherein a stator of a coil movable linear motor is disposed on an upper end of a joinery that is slidable along a groove of the headquarters, and In an automatic opening and closing device for a joinery in which a movable element that is movable relative to a stator is fixed to a groove portion of a Kamoi, a sensor for detecting a relative position between a movable element side coil and a stationary permanent magnet provided in the movable element is provided. The movable element is arranged at substantially the center in the longitudinal direction of the movable element, and the movable element is disposed so that the sensor is positioned at a portion where the joinery wraps at the open end and closed end positions.

  According to the automatic opening and closing device of the fitting according to claim 1, the sensor for detecting the relative position between the mover side coil and the stator side permanent magnet provided in the mover is disposed at a substantially center in the longitudinal direction of the mover. In addition, since the movable element is disposed so that the sensor is positioned at a portion where the joinery wraps at the open end and the closed end positions, the joinery is located at either the open end or the closed end position. At least half of the mover corresponds to the stator, and the sensor can detect the magnetization pattern of the permanent magnet on the stator side and start it in the opening and closing directions. Without using it, it is possible to provide an automatic opening / closing device for a joinery that can open and close the entrance / exit with the least amount of undrawn margin.

  For the purpose of providing an automatic opening and closing device for a fitting that can open and close the entrance and exit with the least possible pull-out margin without using a dedicated item for the fitting, etc., the mover side coil and stator side permanent provided on the mover A configuration in which a sensor for detecting a relative position with respect to a magnet is arranged at substantially the center in the longitudinal direction of the mover, and the mover is arranged so that the sensor is located at a portion where the joinery wraps at the open end and closed end positions. And realized.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged cross-sectional view of a main part of an automatic opening / closing device for a joinery according to the embodiment, and FIG. A mover unit 21 of a coil movable linear motor L is fixed to a recess 2 a formed in the groove 2 of the Kamoi 1. The position is a position corresponding to the portion (Z) where the fitting unit 11 wraps at the open end and the closed end positions, in the longitudinal center of the mover unit 21. The mover unit 21 is positioned in the mounting case 4 fixed in the recess 2a so that the coil unit 3 is substantially flush with the bottom surface 2b of the groove 2 of the duck 1 and the position protruding from the bottom surface 2b of the groove 2. It is mounted so that it can move up and down.

  The coil unit 3 is urged in a direction that always protrudes from the bottom surface 2 b of the groove 2 by a spring 5 interposed between the mounting cases 4. The protruding amount is regulated by the engagement of the stopper 3 a of the coil unit 3 with the engaging portion 4 a provided on the mounting case 4. The coil unit 3 includes rollers 6 that are in contact with a stator case 12 (described later) on both the left and right sides so as to maintain a constant gap between the coil unit 3 and the stator case 12, and an iron core is contained therein. A plurality of coils 7 are arranged in a longitudinal direction, and each coil 7 generates a thrust in the same direction by the controller 9 based on a relative position with respect to the permanent magnet 14 in the stator case 12 detected by the magnetic sensor 8. Thus, the energization direction is switched.

  On the upper end surface of the fitting 11 that fits into the groove 2 of the Kamoi 1, a stator case 12 of a non-magnetic extruded product such as aluminum is disposed over substantially the entire length. In the stator case 12, a plurality of permanent magnets 14 magnetized in the thickness direction together with an iron yoke 13 are arranged over the entire length. Adjacent ones of the permanent magnets 14 are arranged with different polarities to constitute a stator 15 of the coil movable linear motor L.

  The joiner 11 is pushed up by fitting the upper end into the groove 2 of the head 1 so that the stator case 12 disposed on the upper end surface of the joiner 11 comes into contact with the rollers 6 and 6 of the coil unit 3 and pushes it up. The coil unit 3 is retracted to a position that is substantially flush with the bottom surface 2b of the groove 2 of the Kamoi 1. Thereby, the fitting 11 can be easily fitted into the groove 2 of the Kamoi 1. Thereafter, the coil unit 3 that is biased by the spring 5 and protrudes into the groove 2 of the Kamoi 1 has its roller 6 in contact with the stator case 12 so that the gap between the coil unit 3 and the stator 15 is constant. Hold.

  Then, by operating an opening / closing switch (not shown), the controller 9 switches the energization direction to each coil 7 of the coil unit 3 at a good timing based on the relative position between the coil 7 and the permanent magnet 14 detected by the magnetic sensor 8. By making the iron core of each coil 7 have a polarity of attraction and repulsion with respect to the polarity of the permanent magnet 14, thrust in a predetermined direction acts between the coil unit 3 and the stator 15. Since the stator 15 is disposed on the upper end surface of the joinery 11 and the mover unit 30 including the coil unit 3 is fixed to the groove 2 of the Kamoi 1, the joinery 11 is opened and closed, and the roller 6 moves over the stator case 12. Roll.

  In the automatic opening / closing device for a joinery according to the above embodiment, the magnetic sensor 8 is disposed at the approximate center in the longitudinal direction of the coil unit 3, and the sensor 8 wraps to the portion (Z) where the joinery 11 wraps at the open and closed ends. Since the mover unit 21 is disposed so as to be positioned, at least half of the coil unit 3 corresponds to the stator 15 when the fitting 11 is in either the open end position or the closed end position. The magnetic sensor 8 detects the magnetization pattern of the permanent magnet 14 and can be activated in the opening direction and the closing direction. Although the part (Z) where the joinery 11 wraps is a so-called leaving margin, the length is a length in which three magnetic sensors 8 are arranged. It is possible to provide an automatic opening and closing device for a joinery that can open and close the entrance and exit with the least possible withdrawal margin.

  Note that the position of the magnetic sensor 8 is not shifted from the center in the longitudinal direction of the coil unit 3 but is slightly shifted in the longitudinal direction, and the magnetic sensor 8 is positioned at a portion where the fitting 11 wraps at the open end and closed end positions. By disposing the mover unit 21 in the opening, it is possible to adjust the thrust distribution at the time of starting in the opening and closing directions.

It is a front view of the principal part of the automatic opening / closing apparatus of the fitting which concerns on an Example. It is the sectional view on the AA line in FIG. It is explanatory drawing for demonstrating the problem of the conventional automatic opening / closing apparatus of joinery.

Explanation of symbols

1 ... Kamoi 2 ... Groove 3 ... Coil unit 7 ... Coil 8 ... Magnetic sensor 11 ... Joiner 14 ... Permanent magnet 15 ... Stator 21 ... Movable element Unit L ... Coil movable linear motor Z ... The part where the joinery wraps at the open and closed positions

Claims (1)

Automatic of fittings in which a stator of a coil movable linear motor is arranged at the upper end of a fitting that can slide along the groove of the Kamoi, and a movable element that can move relative to the stator is fixed to the groove of the Kamoi. In switchgear,
A sensor for detecting the relative position between the mover-side coil and the stator-side permanent magnet provided in the mover is arranged at the approximate center in the longitudinal direction of the mover, and the sensor is installed at the open end and closed end positions. An automatic opening and closing device for a joinery, wherein the mover is disposed so as to be positioned at a portion to be wrapped.

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