JPH0520550B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is characterized in that when a sliding door is slightly pulled, a rotating body rotates, which is detected by a magnetically sensitive switch mechanism, and a drive mechanism is activated to open and close the sliding door. This relates to a sliding door opening/closing device.

<Prior Art> As is well known, there are various types of automatic sliding door opening/closing devices that use drive mechanisms to open and close sliding doors.

For example, a pine with a built-in foot switch is placed in front of a sliding door, and when a person steps on the pine, the foot switch detects it and activates a drive mechanism, which opens and closes the sliding door. There are structures in which a sensor is installed near the sliding door, and when a person approaches the sliding door, the sensor detects and activates a drive mechanism to open and close the sliding door.

<Problems to be Solved by the Invention> However, in the automatic sliding door opening/closing device of the conventional structure described above, the sliding door opens and closes simply by a person passing near the sliding door. Therefore, for example, if a hallway and a room in a building are separated by the above-mentioned sliding door, the sliding door will be opened and closed needlessly just by passing through the hallway near the sliding door, especially in the reception room of a company. The needless opening and closing of sliding doors can be a major nuisance in hospitals and treatment rooms.

Furthermore, in automatic sliding door opening/closing devices, detection mechanisms such as switches and sensors are the most likely to fail, and once a failure occurs, it is not only difficult to open and close the sliding door, but also requires a specialist repair company to be called in.

<Means for Solving the Problems> The present invention has been proposed in view of the above, and includes a sliding door that is slidably suspended on a rail provided inside the upper cross member via a bracket mechanism. A sliding door opening/closing device in which a traction material fixed to the upper cross member is connected to a drive mechanism provided inside the upper cross member, and the operation of the drive mechanism pulls the traction material and causes the sliding door to slide along the rail. The mechanism includes a rotating body that rotates when the sliding door slides toward the opening side, but does not rotate when the sliding door slides toward the closing side. To provide an opening/closing device for a sliding door, characterized in that the magnetically sensitive switch mechanism provided inside the upper horizontal member faces the rotating body and controls the opening and closing of the sliding door by sensing with a permanent magnet. It is something to do.

<Examples> The present invention will be described below based on examples shown in the drawings.

The sliding door 1 used in the present invention has a bracket mechanism 3 provided on the upper stile 2 and a rail 5 provided inside the upper cross member 4.
It is suspended by sliding on.

The above-mentioned bracket mechanism 3 is made up of left and right fixing plates 6, 6 fixed to the upper stile 2 and connected by a horizontal plate 7, and the left and right wheels 8, 8 provided on the horizontal plate 7 are mounted on the rail 5, so that the sliding door cannot be closed. 1 can slide laterally.

A drive mechanism 9 is provided at one end inside the upper cross member 4.
, an idler pulley 10 is provided at the other end, and a drive mechanism 9
An endless traction material 11 made of a belt or the like is stretched between the idling pulley 10 and the idling pulley 10, and the traction material 11 is fixed to the bracket mechanism 3. Therefore, when the traction member 11 is moved by the operation of the drive mechanism 9, the sliding door 1 slides along the rail 5 and opens and closes.

As shown in FIG. 2, the above-mentioned drive mechanism 9 has a drive unit 12 that can rotate forwardly and reversely and is composed of a motor or a motor and a speed reducer, and a drive pulley 14 is attached to a drive shaft 13 of the drive unit 12. Since the above-mentioned traction material 11 is hung on the drive pulley 14, the traction material 11 is moved by the drive pulley 14 by the operation of the drive section 12, and the sliding door 1 is opened and closed. The drive shaft 1 extends downward from the drive pulley 14.
A one-way rotation transmission mechanism 15 is provided in the lower part of the rotation transmission mechanism 3. As shown in FIG. 3, this rotation transmission mechanism 15 has a number of serrated vertical grooves 17 formed in parallel on the inner surface of a vertical cylinder 16, and each vertical groove 17 has a small diameter cylindrical member 1.
8 is accommodated, and the drive shaft 13 is inserted into the inside of the vertical cylinder member 16. Therefore, as shown by the solid arrow in FIG. 3, when the drive shaft 13 rotates so as to press the cylindrical member 18 into the narrow space of the vertical groove portion 17, the vertical cylinder member 16 rotates together with the drive shaft 13. but,
As shown by the dashed line arrow in FIG.
Even if the vertical tube member 16 rotates, the vertical cylinder member 16 does not rotate.

A rotating body 19 is provided in the vertical cylinder member 16 of the rotation transmission mechanism 15 described above, and the rotating body 19 is rotated only when the drive shaft 13 rotates in one direction. Therefore, the specific structure of the rotation transmission mechanism 15 described above is one example, and if the rotating body 19 rotates only when the drive shaft 13 rotates in one direction, the rotation transmission mechanism 15 can be replaced with a structure of another structure. May be used.

A plurality of permanent magnets 20 are arranged on the above-mentioned rotating body 19 at equal intervals along the rotational direction of the rotating body 19. According to the embodiment shown in the drawings, eight permanent magnets 20 are provided around the rotating body 19, and are embedded in the rotating body 19. Then, the leaf spring material 21 whose one end is fixed to the drive part 12 is pressed against the lower end of the vertical tube material 16 to prevent the vertical tube material 16 from rotating multiple times or rotating freely, and also to prevent the vertical tube material 16 from rotating multiple times or rotating freely. The magnetically sensitive switch mechanism 22 provided at
The rotation of the permanent magnet 20 by the magnet 9 causes the magnetically sensitive switch mechanism 22 to be sensed.

The magnetically sensitive switch mechanism 22 includes a reed switch, a proximity switch, etc., and generates a signal when the permanent magnet 20 approaches.

The above drive mechanism 9 and magnetically sensitive switch mechanism 2
2 and a stop switch for the sliding door 1 provided at both ends of the upper cross member 4, although not shown in the drawings, are connected to an electrical control mechanism (not shown). This electrical control mechanism controls the operation of the drive mechanism 9 based on a signal from the magnetically sensitive switch mechanism 22, thereby regulating the sliding movement of the sliding door 1. Specifically, when the sliding door 1 is in the closed state, when a person manually moves the sliding door 1 slightly to the open side, the traction material 11 moves, and the traction material 11
Since the drive pulley 14 rotates by the amount of movement of
generate a signal when approaching. This signal causes the electrical control mechanism to operate the drive mechanism 9 and drive shaft 13.
rotates and moves the traction material 11 by the drive pulley 14 to slide the sliding door 1 toward the opening side,
The rotating body 19 rotates together with the rotation transmission mechanism 15. In this case, even if signals are generated as the rotating body 19 rotates and the permanent magnets 20 sequentially approach the magnetically sensitive switch mechanism 22, the electrical control mechanism controls each signal to control the drive mechanism 9. No change in operation.

In this way, when the sliding door 1 slides to the open side and reaches the end of the upper cross member 4 and becomes fully open, the switch mechanism provided at the end of the upper cross member 4 detects this and turns on the electrical control mechanism. The electrical control mechanism deactivates the drive mechanism 9 and activates the internal timer means, which, after a few seconds, reversely activates the drive mechanism 9 to rotate the drive shaft 13 in the opposite direction, thereby causing the traction The material 11 moves backward and the sliding door 1 slides toward the closing side.
When the drive shaft 13 rotates in the opposite direction, the rotating body 19 does not rotate due to the rotation transmission mechanism 15, so that the magnetically sensitive switch mechanism 22 is not detected by the permanent magnet 20.

On the other hand, as described above, even if the operation of the drive mechanism 9 stops when the sliding door 1 is fully open, and any of the permanent magnets 20 comes close to the magnetically sensitive switch mechanism 22 due to the rotation of the rotating body 19 being stopped, no electricity is generated. The control mechanism is electrically operated so as not to operate the drive mechanism 9 until a new signal from the magnetically sensitive switch mechanism 22 is supplied.

When the sliding door 1 slides to the closing side and reaches the end of the upper cross member 4, reaching the fully closed state, a switch provided at the end of the upper cross member 4 generates a signal and supplies it to the electrical control mechanism. , the reverse operation of the drive mechanism 9 is stopped, so the sliding door 1 is stopped.

In addition to the above-mentioned functions, the electrical control mechanism can, for example, provide an electrical braking action to the drive mechanism 9 just before the sliding door 1 is fully opened or completely closed, thereby slowing down the stopping state of the sliding door 1. It is also possible to give a speed difference to the operating state of the mechanism 9 so that the sliding door 1 slides faster only when it is opened or stopped. Furthermore, if an object hits the sliding door 1 while it is sliding toward the closing side, or if a person presses the sliding door 1 to stop it, the drive mechanism 9 will stop operating, and if the sliding door 1 moves slightly toward the opening side, the permanent magnet 20 will stop operating. acts on the magnetically sensitive switch mechanism 22 to operate the drive mechanism 9 and slide the sliding door 1 toward the open side.

Although the present invention has been described above with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments described above, and can be implemented in any manner as long as the configuration described in the claims is not changed. .

<Effects of the Invention> In short, according to the present invention, when the sliding door is manually moved slightly toward the open side, the drive mechanism is activated to slide the sliding door toward the open side, and when the door is fully opened, the sliding door is slid toward the closed side. The sliding door will not open even if you pass near it. Therefore, the sliding door does not open unnecessarily, and since there is no need for a sensor or the like in conventional applications, there is no possibility of failure, and the device is of high practical value, especially for indoor partitions.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic front view, FIG. 2 is a front view with a part of the drive mechanism cut out, and FIG. 3 is a sectional view of the rotation transmission mechanism. FIG. 4 is a plan view of the rotating body. 1 is the sliding door, 3 is the bracket mechanism, 4 is the upper cross member,
5 is a rail, 9 is a drive mechanism, 11 is a traction material, 19
20 is a rotating body, 20 is a permanent magnet, and 22 is a magnetically sensitive switch mechanism.

Claims (1)

[Claims] 1. A sliding door is slidably suspended on a rail provided inside the upper horizontal member via a bracket mechanism, and a traction member fixed to the bracket mechanism is connected to a drive mechanism provided inside the upper horizontal member, and the drive mechanism In a sliding door opening/closing device that slides a sliding door along a rail by pulling a traction member by the operation of It has a rotating body that does not rotate when sliding to the side, and the rotating body has a plurality of permanent magnets arranged along the rotation direction, and a magnetically sensitive switch mechanism provided inside the upper horizontal member is connected to the rotating body. A sliding door opening/closing device characterized in that the opening/closing device for a sliding door is controlled by sensitivity using a permanent magnet.