JP7060862B2 - Automatic sliding door - Google Patents

Description

The present invention relates to an automatic sliding door that opens and closes a door panel by motor power. The automatic sliding door of the present invention includes a fully electric automatic sliding door that automatically opens and closes the door panel only by motor power, and a return unit equipped with a storage spring after opening or closing the door panel by motor power. Includes semi-electric automatic sliding doors.

The fully electric automatic sliding door is disclosed in, for example, the automatic door driving device of Patent Document 1. The automatic door drive device can automatically open and close the sliding door with a drive mechanism, and can manually open and close the sliding door in the event of a power failure. The door drive device is composed of a motor, a selective transmission mechanism, a drive pulley and a driven pulley, and a wire spanning both pulleys. The selective transmission mechanism consists of a drive gear fixed to the output shaft of the motor, a pulley gear fixed to the pulley shaft of the drive pulley, a pair of swing plates swayably supported by the output shaft of the motor, and sway. It consists of a pair of switching gears that are pivotally supported by a moving plate and selectively mesh with the drive gear.

In the above door drive device, when the drive gear is rotationally driven clockwise, the rocking plate tilts clockwise, the switching gear located at the lower end of the tilt meshes with the pulley gear, and the clockwise motor. Power is transmitted to the pulley gears. Further, when the drive gear is rotationally driven counterclockwise, a switching gear different from the previous switching gear meshes with the pulley gear, and the counterclockwise motor power is transmitted to the pulley gear. In the event of a power failure, the switching gear receives the rotational force of the pulley gear and separates from the pulley gear, and the drive pulley, driven pulley, and pulley gear idle, so the sliding door can be opened and closed manually.

The semi-electric automatic sliding door is disclosed in, for example, the sliding door closer device of Patent Document 2. The sliding door closer device includes a DC motor that opens the sliding door (door panel) from the closed position, and a spring-type winder that closes the sliding door from the open position. The DC motor is arranged on the bracket for the door roller that supports the sliding door, and the forward rotation power of the DC motor is transmitted to the door roller via the one-way clutch to automatically open the sliding door. Further, the spring-type winder is arranged at the closed end of the opening frame, and the feeding end of the wire wound around the drum is connected to the bracket. The drum is rotationally urged with a spring material in the direction in which the wire is wound. The one-way clutch transmits the forward rotation power of the DC motor to the door roller, but shuts off the rotational force of the door roller when the sliding door closes and moves. The DC motor is driven by using a storage battery (secondary battery) as a power source, and when the sliding door is in the closed position, the storage battery can be charged by the direct current supplied from the power supply device.

In the fully electric automatic sliding door according to the present invention, a pulley arranged above the door panel is rotationally driven by a motor arranged inside the door panel to open and close the door panel. This type of opening / closing structure is patented. It is disclosed in the automatic door device of Document 3. In the automatic door device of Patent Document 3, a driving means, a door traveling means, and a winding traveling guiding means are provided on the door body (door panel) so that the door body can be automatically opened and closed. The drive means consists of a servomotor, and a pulley (door traveling means) is fixed to the drive shaft (output shaft). The winding traveling guide means consists of a wire, both ends of which are fixed to the closed end and the open end of the doorway frame via a tensioning means (tension spring), and the middle portion thereof is wound only once around the peripheral surface of the pulley. There is. The door body is provided with a battery, a charger, a control unit, a touch switch, and the like, and when the touch switch is touched, the control unit activates a motor to automatically open and close the door body.

JP-A-2009-79393 (paragraph number 0017) Japanese Unexamined Patent Publication No. 11-166355 (paragraph numbers 0016 to 0019) Japanese Unexamined Patent Publication No. 2000-96917 (paragraph numbers 0009 to 0011)

According to the automatic door drive device according to Patent Document 1, the sliding door can be automatically opened by the power of a motor, and the sliding door can be manually opened and closed easily in the event of a power failure. However, a large lintel must be provided above the sliding door to accommodate the entire opening and closing mechanism such as the motor, selective transmission mechanism, drive pulley, and driven pulley. Therefore, it is not possible to apply an automatic door drive device to a sliding door equipped with a lightweight and small door panel, which is applied to a living room of a general house or a private room of a facility for the elderly. Incidentally, since the thickness of the lightweight and small door panel and the vertical and horizontal dimensions of the cross section of the guide rail supporting the door panel are only about 40 mm, there is no room for incorporating the above-mentioned automatic door drive device. In addition, since the entire device is large-scale, the introduction cost of the opening / closing structure of the door body is high. Similar to the automatic door drive device of Patent Document 1, the sliding door closer device of Patent Document 2 must secure a large space above the sliding door, and is provided with a lightweight and small door panel and a narrow guide rail. Difficult to apply to sliding doors.

In the automatic door device of Patent Document 3, a motor, a battery, a control unit, etc. are provided inside the door body, and a pulley and a wire are arranged on the upper side of the door body, so that it may be applied to a lightweight and small door panel. be. However, even if the automatic door device of Patent Document 3 can automatically open and close the door body in principle, it is difficult to put it into practical use. In the automatic door device of Patent Document 3, the drive means automatically closes the door body when the door opening operation is completed, but there is no means for confirming whether or not the user has finished entering or leaving the room. There is a problem with time safety. Further, in practice, it is necessary to consider safety measures when the door body collides with an obstacle during opening (or closing), and countermeasures in case of a power failure or an emergency. Further, it is necessary to surely prevent the door body that is moving open (or closed) from colliding with the door frame. Automatic sliding doors cannot be commercialized unless these practical needs are met. Since the pulley is located inside the doorway frame (opening frame), there is also the problem that the labor of constructing the door panel becomes troublesome.

An object of the present invention is a highly practical automatic device that can be suitably applied to a sliding door equipped with a relatively lightweight and small door panel and a guide rail, which is used in a living room of a general house or a private room of a facility for the elderly. To provide sliding doors.

The automatic sliding door according to the present invention has a door panel 3 that is guided and supported so as to be openable and closable along a guide rail 2 provided in the opening frame 1, and a door panel 3 provided in the door panel 3 that is moved and operated by motor power. It includes a drive unit 17 , a return unit 77 that is embedded in the door panel 3 and performs a return operation of the door panel 3 that has been moved, and a braking structure 78 that brakes the return movement of the door panel 3 . The drive unit 17 includes a unit base 27 embedded and fixed in the door panel 3, a motor 28 housed in the base 27, a clutch 29, a traveling pulley 31 rotationally driven by power passing through the clutch 29, and an opening frame. A guide body 32 which is fixed to the closed end and the open end of 1 and whose middle portion is wound around the traveling pulley 31 is provided. The door panel 3 is provided with a power supply unit 18 provided with a power supply battery 24, a switch body 20 for activating the motor 28, and a control device 19 for controlling the drive state of the motor 28. A position sensor 70 for detecting the moving position of the door panel 3 is provided between the opening frame 1 and the door panel 3. The control device 19 starts the motor 28 based on the output signal of the switch body 20, controls the driving state of the motor 28 based on the output signal of the position sensor 70, and automatically opens and closes the door panel 3. The motor 28 is composed of a geared motor integrally provided with a forward / reverse rotation motor 28a capable of forward rotation drive and reverse rotation drive and a reduction mechanism 28b. The clutch 29 is composed of a bidirectional clutch that transmits the rotational power of the motor 28 in both forward and reverse directions to the traveling pulley 31, but cuts off the rotational operation that is transmitted from the traveling pulley 31 to the motor 28. The return unit 77 rotates and urges the drive drum 81, the closing wire 82 that is fed from the drum 81 and whose feeding end is fixed to the guide rail 2, and the drive drum 81 in the direction in which the closing wire 82 is wound. It is equipped with a drum 85. The door panel 3 is automatically moved and operated by the rotational power of the motor 28, and is configured to brake by the braking structure 78 while the moved door panel 3 is returned and moved by the return unit 77. ..

One end of the guide body 32 formed by the wire cable is fixed to either the closed end or the open end of the opening frame 1, and the other end is the tension spring 46 and the tension that adjusts the spring force of the spring 46. It is fixed to the other end of the opening frame 1 via the adjusting structure 47. As shown in FIG. 6, the guide body 32 includes a winding portion 48 that is wound around the sheave body 31a of the traveling pulley 31 in a circular manner. A tension adjustment structure for the tension of the guide body 32 so that the traveling pulley 31 slips with respect to the winding portion 48 and stops the winding operation when the door panel 3 in the middle of opening and closing is received by an obstacle and stopped. It is adjusted at 47.

A torque limiter is arranged between the clutch 29 and the traveling pulley 31. In a state where the door panel 3 in the middle of opening and closing is received by an obstacle and stopped, the torque limiter operates to stop the winding operation of the traveling pulley 31.

The suspension wheel type runner 4 provided on the door panel 3 is guided and supported by the guide rail 2 so as to be openable and closable. The upper surface of the door panel 3 faces the lower surface of the guide rail 2 vertically via the gap E. The guide body 32 and the sheave body 31a of the traveling pulley 31 are arranged in the gap E.

The position sensor 70 includes first and second magnetic sensors 71 and 72 provided on the side of the door panel 3 and first and second magnets 73 and 74 provided on the side of the opening frame 1. The first magnetic sensor 71 is arranged in the upper corner of the door panel 3 near the closed end, and the second magnetic sensor 72 is arranged in the upper corner of the door panel 3 near the open end. The first magnet 73 and the second magnet 74 are arranged near the center of the upper frame of the opening frame 1 at a certain distance from each other. The control device 19 controls the driving state of the motor 28 based on the output signals of the first and second magnetic sensors 71 and 72, and decelerates the door panel 3 near the opening / closing end.

The door panel 3 is moved to either the open end or the closed end by the drive unit 17, and the clutch 29 is engaged in the state where the motor 28 is stopped. The return movement of 3 is blocked. The control device 19 drives the motor 28 to rotate in the direction opposite to the rotation direction up to that point for a moment to release the engagement of the clutch 29, and the return unit 77 returns and moves the door panel 3.

The braking structure 78 is composed of a cylinder body 87 and a cylinder-type air damper provided with a piston rod 88. Inside the guide rail 2, a suspension wheel type runner 4, a closing wire 82 unwound from the drive drum 81, a cylinder body 87, and a piston rod 88 are arranged.

In the automatic sliding door according to the present invention, the door panel 3 can be moved and operated by the motor power of the drive unit 17. Further, the drive unit 17 is composed of a motor 28 and a clutch 29 housed in the unit base 27, a traveling pulley 31 which is rotationally driven, and a guide body 32 whose middle portion is wound around the traveling pulley 31. The control device 19 when the door panel 3 opens and closes starts the motor 28 based on the output signal of the switch body 20, controls the drive state of the motor 28 based on the output signal of the position sensor 70, and opens and closes the door panel 3. I tried to move.
According to such an automatic sliding door, the drive unit 17 can be made smaller and more compact by significantly reducing the number of component parts as compared with the conventional automatic sliding door of this type. Therefore, it is not necessary to install a large lintel or guide rail, which was indispensable in the conventional device, and it is a relatively lightweight and small door panel 3 used in a living room of a general house or a private room of a facility for the elderly. Even in a sliding door provided with a guide rail 2, the drive unit 17 can be embedded in the door panel 3 without any trouble. Further, since the user can automatically move the door panel 3 simply by turning on the switch body 20, it is possible to provide an automatic sliding door suitable for improving the convenience of a user who needs assistance who regularly uses a wheelchair, for example. ..

In the automatic sliding door provided with the return unit 77 for returning the moved door panel 3 and the braking structure 78 separately from the drive unit 17, the door panel 3 is automatically opened and closed in the same manner as the fully electric automatic sliding door. However, the driving opportunity of the motor 28 can be reduced by almost half. Therefore, it is possible to suppress the consumption of the power supply battery 24 and increase the charging interval and the replacement interval. Further, since the clutch 29 is composed of a bidirectional clutch, the door panel 3 can be manually opened as needed, as in the case of a fully electric automatic sliding door, and even in the event of a power failure, the space divided by the door panel 3 can be reached. You can go in and out without any trouble. There is also an advantage that the control of the motor 28 by the control device 19 can be simplified.

The guide body 32 is stretched between the closed end and the open end of the opening frame 1, one of which is fixed to the opening frame 1 via the tension spring 46 and the tension adjusting structure 47, and the halfway portion thereof is the sheave of the traveling pulley 31. It was wound around the body 31a to form a winding portion 48. According to such a traveling structure, when the tension of the guide body 32 is adjusted by the tension adjusting structure 47 and an excessive load is applied to the motor 28, for example, the door panel 3 in the middle of opening and closing is received by an obstacle. When the traveling pulley 31 is stopped, the traveling pulley 31 can be slipped with respect to the winding portion 48 to stop the winding operation. Therefore, even if some obstacle such as a person or an object is in the opening / closing area of the door panel, it is possible to surely eliminate the damage caused by the large load acting on the motor 28. Further, since the guide body 32 is only wound around the sheave body 31a in a circular manner, the traveling pulley 31 can be reliably slipped with respect to the winding portion 48 in the above-mentioned emergency.

A torque limiter is arranged between the clutch 29 and the traveling pulley 31, and the torque limiter can be operated to stop the winding operation of the traveling pulley 31 in a state where the door panel 3 being opened and closed is received by an obstacle and stopped. I did it. According to such a traveling structure, the torque limiter can block the overload on the motor 28, so that the sheave body 31a is more reliable and stable than the case where the sheave body 31a is slipped with respect to the winding portion 48. Overload can be blocked.

When the sheave body 31a of the guide body 32 and the traveling pulley 31 is arranged in the gap E between the upper surface of the door panel 3 and the lower surface of the guide rail 2, for example, when the traveling pulley 31 is arranged inside the guide rail 2. Compared to the above, the construction work can be remarkably simplified and the labor can be saved. Further, the sheave body 31a and the guide body 32 can be prevented from being visually recognized from the front and back of the door panel 3, and the impression of the appearance of the automatic sliding door can be made clear.

The position sensor 70 is composed of the first and second magnetic sensors 71 and 72 and the first and second magnets 73 and 74, and the first magnetic sensor 71 is arranged in the upper corner near the closed end of the door panel 3. , The second magnetic sensor 72 is arranged in the upper corner of the door panel 3 near the open end. Further, the first magnet 73 and the second magnet 74 are arranged near the center of the upper frame of the opening frame 1 in a state of being separated by a certain distance. Further, the control device 19 controls the driving state of the motor 28 based on the output signals of the first and second magnetic sensors 71 and 72, so that the door panel 3 is decelerated near the opening / closing end. According to such an automatic sliding door, after the door panel 3 moves toward the closed end or the open end, the door panel 3 is slowly moved to the fully closed position or the fully open position, so that when the door panel 3 is closed and moved. It is possible to prevent the vehicle from colliding with the opening frame 1 due to the kinetic inertial force of.

When the door panel 3 is moved to either the open end or the closed end by the drive unit 17 and the motor 28 is stopped, the clutch 29 is engaged with the door. The return movement of the panel 3 can be prevented. Further, the control device 19 drives the motor 28 to rotate in the opposite direction for a moment to release the engagement of the clutch 29, and the return unit 77 returns and moves the door panel 3. By applying such a drive structure to a semi-electric automatic sliding door, the control device 19 can accurately set the timing at which the return unit 77 operates to move the door panel 3 back. Therefore, although it is a semi-electric automatic sliding door, the door panel 3 can be opened and closed accurately in the same manner as the fully electric automatic sliding door.

Inside the guide rail 2, a suspension wheel type runner 4, a closing wire 82 unwound from the drive drum 81, a cylinder body 87, and a piston rod 88 are arranged. According to such a sliding door, each of the above members 4, 82, 87, and 88 can be concealed by the guide rail 2 so that the impression of the appearance of the sliding door is not complicated. Further, the closing wire 82 that is unwound or rewound each time the door panel 3 is opened and closed can be protected by the guide rail 2.

It is a partially broken front view which shows the drive unit which concerns on a reference example . It is a front view of the automatic sliding door which concerns on a reference example . It is a vertical sectional side view which shows the relation structure of a door panel, a runner, and a guide rail. It is a partially broken front view which shows the arrangement form of the opening / closing structure in a door panel. FIG. 3 is a cross-sectional view taken along the line AA in FIG. It is a top view which shows the relationship between a traveling pulley and a guide body. It is a front view which shows the arrangement form of a position sensor. It is a flowchart which shows the control procedure at the time of opening in a drive unit. It is a flowchart which shows the control procedure at the time of closing in a drive unit. It is explanatory drawing which shows the state of the position sensor when the door panel opens and closes and moves. It is a front view of the automatic sliding door which concerns on Example 1 of this invention. It is a partially broken front view which shows the arrangement form of an opening / closing structure. It is a vertical sectional side view which shows the relation structure of a door panel, a runner, and a guide rail. It is a vertical sectional front view of a return unit. It is a vertical sectional side view of a return unit. It is a block diagram which shows the charging device of the automatic sliding door which concerns on Example 2 of this invention. It is a block diagram which shows the charging device of the automatic sliding door which concerns on Example 3 of this invention.

( Reference Example ) FIGS. 1 to 10 show a reference example in which the automatic sliding door of the present invention is applied to a fully electric automatic sliding door. In this reference example , front / back, left / right, and up / down follow the notation of the crossing arrow shown in FIG. 2 and the front / back / left / right / up / down in the vicinity of the crossing arrow. In FIG. 2, reference numeral 1 is an opening frame, reference numeral 2 is a guide rail fixed to the upper frame of the opening frame 1, and reference numeral 3 is a door panel. As shown in FIG. 3, the door panel 3 is suspended and supported by runners 4 mounted on the left and right of the upper portion thereof, and is guided and supported by a guide rail 2 so as to be openable and closable. The door panel 3 is made of a wood-based panel having a total thickness of 38 mm, which is commercially available from a building material manufacturer, and has a vertically long square frame body 3a, a core material 3b arranged inside the frame body 3a, and a frame body. It is composed of a surface covering material 3c and the like fixed to the front and back of the core material 3a and the core material 3b (see FIG. 4). Door handles 5 are provided on the front and back (front and rear surfaces) of the door panel 3, and the lower portion of the door panel 3 is guided by a vibration damping roller 6 fixed to the floor surface to regulate the back and forth swinging movement (Fig.). 2).

As shown in FIG. 3, the guide rail 2 is made of an aluminum strip having a C-shaped cross section that opens downward, and is arranged from the closed end to the open end of the opening frame 1. Rail walls 7 for guiding the runner 4 are provided on the front and rear of the lower surface of the guide rail 2, and ribs for restricting the runner's movement are provided on the front and rear walls and the upper wall on the inner surface of the rail. The runner 4 includes a runner base 11 mounted on a holder 10 fixed to an upper corner of a door panel 3, a pair of front and rear rollers 12, a roller frame 13 that rotatably supports the rollers 12, and a runner base 11 and a roller frame. It is composed of a runner shaft 14 and the like connecting the 13. The vertical and horizontal dimensions of the cross section of the guide rail 2 are 39 mm.

An opening / closing structure is provided between the door panel 3 and the opening frame 1 in order to automatically open / close the door panel 3. As shown in FIG. 4, the opening / closing structure includes a drive unit 17 that opens / closes the door panel 3 by motor power, a power supply unit 18 arranged in the vicinity of the door handle 5, a control device 19, and a start switch (switch body) 20. And so on. The drive unit 17 and the power supply unit 18 are each embedded inside the door panel 3, whereas the start switch 20 is arranged on the front and back of the door panel 3 in a state of being located below the door handle 5. See Figure 2).

The drive unit 17 is arranged inside a mounting portion 21 formed on the upper portion of the frame body 3a on the open end side of the door panel 3. Further, the power supply unit 18 is arranged in the electrical component mounting portion 22 provided below the door handle 5. The electrical component mounting portion 22 opens toward the left side surface of the door panel 3, and the power supply unit 18 is inserted and mounted from the opening side inside the door panel 3 and fastened and fixed to the door panel. Inside the power supply unit 18, a control device 19 for controlling a driving state of a motor 28, which will be described later, is housed.

In FIGS. 1 and 5, the drive unit 17 includes a unit base 27 embedded and fixed in the door panel 3, a motor 28, a clutch 29, and a bearing unit 30 housed in the base 27, a traveling pulley 31, and a traveling pulley 31. It is composed of a guide body 32 and the like. The unit base 27 is made of a press-molded product made of a vertically long channel material-like steel plate, and a motor bracket 33 for supporting the motor 28 and a clutch bracket 34 for supporting the clutch 29 are fixed to the rear surface thereof. The motor bracket 33 and the clutch bracket 34 are fastened and fixed by bolts 35 and nuts 36 inserted into the upper wall of the unit base 27 and a pair of left and right distance collars 37 fitted to the bolts 35. Reference numeral 38 is a cover that covers the front surface of the drive unit 17, and is detachably fastened to the unit base 27. The drive unit 17 is integrated with the door panel 3 by inserting and mounting the unit base 27 from above the mounting portion 21 and then fastening the fastening seats 27a extending to the left and right of the unit base 27 with screws 56.

The motor 28 is a commercially available geared motor (Tsukasa Denko Co., Ltd., TG01H-EU equivalent) equipped with a forward / reverse rotation motor 28a capable of forward rotation drive and reverse rotation drive and a reduction mechanism 28b, and is a reduction mechanism 28b. The output shaft and the clutch 29 are connected via a coupling 40. Further, a pulley shaft 41 rotatably supported by the bearing unit 30 is connected to the output side of the clutch 29, and the traveling pulley 31 is fixed to the pulley shaft 41. The clutch 29 is a commercially available bidirectional clutch (Origin Electric Co., Ltd., OSC-F equivalent product). In the bidirectional clutch, the forward / reverse bidirectional rotational power transmitted via the coupling 40 can be transmitted to the traveling pulley 31, but the rotational operation to be transmitted from the traveling pulley 31 to the motor 28 is cut off. This makes it possible to manually open and close the door panel 3. The bearing unit 30 is a commercially available product, and two rolling bearings 42 are incorporated inside the bearing block.

The traveling pulley 31 is composed of a sheave body 31a having a groove with a flange around which the guide body 32 is wound, and an aluminum turning product integrally provided with a boss 31b for supporting the sheave body 31a, and the sheave body 31a is a unit. The boss 31b is fixed to the pulley shaft 41 so as to be exposed on the upper surface side of the base 27. The guide body 32 is formed by coating the surface of a stainless steel wire cable with a polyamide resin, both ends thereof are fixed to the closed end and the open end of the opening frame 1, and the middle portion is a groove portion of the sheave body 31a. It is wound only once around. More specifically, as shown in FIG. 1, one end of the guide body 32 is connected to a hook metal fitting 44 fixed to the closed end of the opening frame 1. Further, the other end of the guide body 32 is guided downward by a turning roller 45 fixed to the open end of the opening frame 1, and then the tension spring 46 made of a tension spring and the tension of the spring 46 are adjusted. It is fixed to the vertical frame of the opening frame 1 via the tension adjusting structure 47. FIG. 6 shows the winding portion of the guide body 32 wound around the sheave body 31a with reference numeral 48.

The tension adjusting structure 47 is composed of a bracket 50 fixed to a vertical frame, an adjusting bolt 51 inserted through a through hole of the bracket 50, and two nuts 52 screwed into the adjusting bolt 51. By adjusting the height position of the adjusting bolt 51 with respect to the bracket 50, the amount of expansion and contraction of the tension spring 46 can be adjusted to a large or small amount, and the tension acting on the guide body 32 can be adjusted. Further, by adjusting the tension of the guide body 32, the frictional force between the sheave body 31a and the winding portion 48 can be adjusted to a predetermined state. In this way, adjusting the frictional force between the sheave body 31a and the winding portion 48 to a predetermined state is to slip the traveling pulley 31 with respect to the winding portion 48 to perform the winding operation, as will be described later. This is to stop. Rubber stoppers 53 that prevent the door panel 3 from colliding with the spring force adjusting structure 47 are fixed to a plurality of places below the bracket 50.

In FIG. 4, a control device 19 is arranged inside the hollow power supply unit 18, a box-shaped battery case 23 is provided under the control device 19, and 10 secondary batteries (power supply batteries) are provided in the case 23. 24 is detachably housed. The secondary battery 24 is a commercially available tubular lithium-ion battery, the voltage specification of which is 1.2 V, and the power capacity is 900 mAh.

A position sensor 70 for detecting the moving position (open / closed state) of the door panel 3 is provided between the opening frame 1 and the door panel 3. As shown in FIGS. 3 and 7, the position sensor 70 includes first and second magnetic sensors 71 and 72 provided on the side of the door panel 3 and first and second magnets provided on the side of the opening frame 1. It consists of 73.74. The first magnetic sensor 71 is arranged in the upper corner of the door panel 3 near the closed end, and the second magnetic sensor 72 is arranged in the upper corner of the door panel 3 near the open end. Further, the first magnet 73 and the second magnet 74 are arranged near the center of the upper frame of the opening frame 1 in a state of being separated by a certain distance.

In the state where the door panel 3 is closed, as shown in FIG. 10, the second magnetic sensor 72 faces the first magnet 73, and from this state, the door panel 3 is opened and moved, and the second magnetic sensor 72 is moved. A detection signal is output when passing below the second magnet 74. Further, the first magnetic sensor 71 outputs a detection signal when the door panel 3 moves open, when it passes below the first magnet 73, and when it passes below the second magnet 74. In the state where the door panel 3 is open, the first magnetic sensor 71 faces the corresponding second magnet 74, and from this state, the door panel 3 closes and moves, and the first magnetic sensor 71 moves with the first magnet 73. A detection signal is output when passing below. Further, the second magnetic sensor 72 outputs a detection signal when the door panel 3 closes and moves, when it passes below the second magnet 74, and when it passes below the first magnet 73. The control device 19 controls the driving state of the motor 28 based on the detection signals of these magnetic sensors 71 and 72.

The automatic sliding door configured as described above can be constructed by the following procedure, for example. First, both ends of the guide body 32 are temporarily fixed to the opening frame 1 in a loosened state. Further, the drive unit 17, the power supply unit 18, the start switch 20, and the like are incorporated in the door panel 3. The guide rail 2 in which the roller 12 and the roller frame 13 are housed is fastened and fixed to the upper frame of the opening frame 1, and the runner base 11 is exposed on the lower surface of the guide rail 2. Next, the door panel 3 is held upright and engaged with the anti-vibration roller 6, one of the left and right runner bases 11 is fitted into the holder 10, and one side of the door panel 3 is suspended and supported by the guide rail 2. .. In this state, the middle portion of the guide body 32 is wound around the traveling pulley 31, the remaining runner stand 11 is fitted into the holder 10, and the entire door panel 3 is suspended and supported by the guide rail 2. Finally, the nut 52 of the tension adjusting structure 47 is tightened to adjust the tension of the guide body 32 to a predetermined state, and a series of construction work is completed. As shown in FIGS. 1 and 3, the sheave body 31a and the guide body 32 of the traveling pulley 31 after construction are located in the gap E between the upper surface of the door panel 3 and the lower surface of the guide rail 2.

When the traveling pulley 31 and the guide body 32 are arranged by using the gap E as described above, the construction work is remarkably simplified as compared with the configuration in which the traveling pulley 31 is arranged inside the guide rail 2, for example. It can be converted and the trouble can be saved. This can be done by simply holding the door panel 3 to which the drive unit 17 is assembled upright and suspending it on the guide rail 2, and most of the construction work of the door panel 3 can be completed. This is because the tension of the guide body 32 may be adjusted. Further, when the traveling pulley 31 and the guide body 32 are arranged by using the gap E, the sheave body 31a and the guide body 32 are prevented from being visually recognized from the front and back of the door panel 3, and the appearance of the automatic sliding door is prevented. There is also an advantage that the impression of can be refreshed.

Next, the opening / closing operation of the automatic sliding door will be described with reference to the flowcharts shown in FIGS. 8 to 9. As shown in FIG. 10A, when the start switch 20 is turned on when the door panel 3 is in the closed position, the control device 19 drives the motor 28 in the forward rotation (S1), and the rotational power thereof is the clutch 29. It is transmitted to the traveling pulley 31 via the traveling pulley 31. After driving the motor 28 in the forward direction, the timer starts timing (S2). In this state, as shown in FIG. 6, since the guide body 32 is wound around the sheave body 31a in the clockwise direction, the door panel 3 moves in the opening direction. As the door panel 3 moves open, as shown in FIGS. 10 (d to e), when the first magnetic sensor 71 approaches the first magnet 73 and switches to the on state (YES in S3), The control device 19 considers that the door panel 3 is opened close to the open end, reduces the voltage applied to the motor 28 to 50% of the voltage applied to the motor 28, and decelerates the motor 28 (S4).

After decelerating the motor 28, stop the timer timing (S5), start the timer timing again (S6), and confirm that the first magnetic sensor 71 is switched to the ON state (S6). YES in S7), the motor 28 is stopped just before the door panel 3 reaches the position shown in FIG. 10 (g) (S8). In this way, after the door panel 3 is opened to the open end, the door panel 3 is slowly moved to the fully open position, so that the door panel 3 collides with the opening frame due to the kinetic inertia force at the time of opening. Can be prevented. The open end of the door panel 3 in the fully open position is received by the stopper 53. After the motor 28 is stopped, the control device 19 stops the timer measurement (S9), then starts the timer measurement again (S10), and a predetermined time (T1) has elapsed from the start of the timer measurement. (YES in S11), and shift to the control of system A for automatically closing the door panel 3. That is, in S11, when the predetermined time (T1) has elapsed, it is considered that the entry / exit of the user has been completed, and the control of the A system is started. The timer may be stopped (S9) immediately before the motor 28 is stopped.

In the control system shown in FIG. 8, when the motor 28 is driven in the normal direction and then a certain period of time (T2) elapses without the first magnetic sensor 71 being switched to the ON state (NO in S3) (YES in S12). Since it is assumed that some obstacle such as a person or an object is in the open area of the door panel 3, the motor 28 is stopped (S13) to notify that it is in an abnormal state (S14), and the A system Control is transferred to the previous stage of S32. As the means for notifying the abnormal state, a sounding body such as a speaker or a buzzer, a light emitting display body, and some display bodies such as a display can be combined and configured.

In the control system shown in FIG. 8, when a certain period of time (T3) has elapsed without the first magnetic sensor 71 being switched to the ON state (NO in S7) after decelerating the motor 28 (YES in S15), As shown in FIG. 10 (f), it is assumed that the start switch 20 is turned on at the position where the door panel 3 is opened to the open end, and the door panel 3 has already reached the open end. The motor 28 is stopped (S8).

As described above, when some obstacle such as a person or an object is in the opening / closing area of the door panel 3, a large load acts on the forward / reverse rotation motor 28a, and if the time is prolonged, the motor 28a may be damaged. Even in such a case, in order to further prevent the forward / reverse motor 28a from being damaged, the traveling pulley 31 is attached to the winding portion 48 of the guide body 32 when the door panel 3 being opened / closed is received by an obstacle and stopped. On the other hand, it slips so that the winding operation of the winding portion 48 by the traveling pulley 31 can be stopped. Specifically, the amount of expansion and contraction of the tension spring 46 is adjusted by the spring force adjusting structure 47 to optimize the tension of the guide body 32, and the frictional force between the sheave body 31a and the winding portion 48 of the guide body 32 is predetermined. I try not to exceed the value of. Further, in order to ensure that the traveling pulley 31 slips with respect to the winding portion 48 in an emergency as described above, the guide body 32 is wound around the sheave body 31a in a circular manner to form the winding portion 48. The larger the number of times the guide body 32 is wound around the winding portion 48, the longer it takes to slip the traveling pulley 31 with respect to the winding portion 48.

In the control of the system A shown in FIG. 9, the control device 19 reversely drives the motor 28 (S21) to close and move the door panel 3 in the fully open position, and then stops the timer timing (S22). , The timer starts timing again (S23). The timer timing stop (S22) may be immediately before the motor 28 is reversely driven (S21). When the door panel 3 is closed and moved as shown in FIGS. 10 (f to c) and the second magnetic sensor 72 is switched to the on state in the vicinity of the second magnet 74 (YES in S24), the control device 19 is set. Assuming that the door panel 3 is closed and moved toward the closed end, the voltage applied to the motor 28 is reduced to 50% of the previous voltage to decelerate the motor 28 (S25). After decelerating the motor 28, stop the timer timing (S26), confirm that the second magnetic sensor 72 has been switched to the ON state (YES in S27), and the door panel 3 is shown in FIG. Immediately before reaching the position shown in (a), the motor 28 is stopped (S28) to end a series of controls, and the control device 19 shifts to the sleep state.

In the control of system A shown in FIG. 9, after the motor 28 is reversely driven, a certain time (T4) elapses without the second magnetic sensor 72 switching to the ON state (NO in S24) (YES in S29). Since it is assumed that some obstacle such as a person or an object is in the closed area of the door panel 3, the motor 28 is stopped (S30) to notify that it is in an abnormal state (S31), and the timer The timing is stopped (S32), and the control is terminated.

When the voltage of the secondary battery 24 drops, the door panel 3 can be manually opened and closed. For example, when the door panel 3 is opened from the closed position, the traveling pulley 31 rotates to wind the guide body 32. Since the rotational operation of the traveling pulley 31 at this time is disengaged by the clutch 29 composed of the bidirectional clutch, the rotational operation is not transmitted to the side of the motor 28. Therefore, the door panel 3 can be lightly opened, and similarly. Can be closed. When the door panel 3 is manually opened and closed suddenly, a large frictional force acts between the sheave body 31a of the traveling pulley 31 and the winding portion 48 of the guide body 32, but even in that case, the traveling pulley 31 guides. Since the door panel 3 slips and slips with respect to the winding portion 48 of the body 32, the door panel 3 does not open and close any more, and therefore the door panel 3 is prevented from colliding with the open end or the closed end of the opening frame 1. Can improve safety.

As described above, in the fully electric automatic sliding door, a motor 28 capable of forward and reverse rotation and an integrated deceleration mechanism, a clutch 29 composed of a bidirectional clutch, a traveling pulley 31, and a guide wound around the traveling pulley 31. The drive unit 17 is composed of the body 32 and the like. According to such an automatic sliding door, the drive unit 17 can be made smaller and more compact by significantly reducing the number of component parts as compared with the conventional automatic sliding door of this type. Therefore, it is not necessary to install a large lintel or guide rail, which was indispensable in the conventional device, and it is a relatively lightweight and small door panel 3 used in a living room of a general house or a private room of a facility for the elderly. Even in a sliding door provided with a guide rail 2, the drive unit 17 can be embedded in the door panel 3 without any trouble.

Further, since the user can automatically open and move the door panel 3 and automatically close and move the door panel 3 simply by turning on the start switch 20, the user can easily enter and exit the room. Therefore, the trouble of opening and closing the door panel 3 can be completely eliminated, and for example, an automatic sliding door suitable for improving the convenience of a user who needs assistance who regularly uses a wheelchair can be provided. Further, since the clutch 29 is composed of a bidirectional clutch, the door panel 3 can be manually opened when necessary, and the room can be entered and exited without any trouble even in the event of a power failure or the like.

(Example 1 ) FIGS. 11 to 15 show Example 1 in which the automatic sliding door of the present invention is applied to a semi-electric automatic sliding door. In FIGS. 11 and 12, the semi-electric automatic sliding door is a return unit 77 that closes (returns) the opened door panel 3 separately from the drive unit 17 that opens and moves the door panel 3 by motor power. It is significantly different from the automatic sliding door of the reference example in that it is provided with a braking structure 78 for braking the closing movement of the door panel 3. The drive unit 17 is the same as the drive unit 17 described in the reference example , the motor 28 is a geared motor capable of forward / reverse drive, and the clutch 29 is a bidirectional clutch.

As shown in FIG. 12, the return unit 77 includes a rectangular unit case 79, a drive drum 81 rotatably supported by a drum shaft 80 fixed to the unit case 79, and a closing wire 82 unwound from the drum 81. It is equipped with. The feeding end of the closing wire 82 is inseparably hooked to the hook-shaped fixing bracket 83 fixed to the middle portion of the guide rail 2. The middle portion of the closing wire 82 drawn out from the drive drum 81 is guided by a guide pulley 94 provided on the roller frame 91, which will be described later. The closed wire 82 is formed by coating the surface of a stainless steel wire with a polyamide resin.

In FIGS. 14 and 15, the unit case 79 is formed in a hollow box shape by a pair of front and rear metal cases 79a and upper and lower resin cases 79b and 79c, and the entire unit case 79 is housed in a mounting recess adjacent to the drive unit 17. The upper surface thereof is closed with a mounting plate 84 made of a metal plate. The unit case 79 is engaged and fixed to the mounting plate 84 in a non-movable manner in the front-rear direction, left-right direction, and up-down direction. The plastic drive drum 81 is provided with a cylindrical body portion and a flange, and a spring (accumulation body) 85 for winding a closing wire 82 is housed in the body portion.

In FIG. 12, the braking structure 78 is composed of a cylinder type air damper, and is composed of a cylinder body 87, a piston rod 88, a speed controller (not shown), and the like. One end of the cylinder body 87 is connected to the runner 4 on the closed end side via a connecting metal fitting 89, and the open end side of the cylinder body 87 is supported by a pair of front and rear rollers 90 via a roller frame 91. .. Therefore, the cylinder body 87 moves along with the opening / closing movement of the door panel 3. As shown in FIG. 13, a part of the piston rod 88 passes through the inside of the roller frame 13.

A magnet 92 is fixed to the tip of the piston rod 88, and an iron plate 93 is fixed to the closed end of the guide rail 2. When the door panel 3 is closed, the magnet 92 is attracted to the iron plate 93 and the movement of the piston rod 88 is restricted. When the door panel 3 is opened by motor power from this state, only the cylinder body 87 moves along with the door panel 3, the piston rod 88 is pulled out to the limit position, and then the magnet 92 is the iron plate 93. The piston rod 88 also accompanies the door panel 3 and moves to the fully open position. Others are the same as the automatic sliding door of the reference example , so the same members are designated by the same reference numerals and the description thereof will be omitted.

Next, the opening / closing operation of the semi-electric automatic sliding door will be described. Since the control device 19 in this embodiment performs almost the same control as the control device 19 described in the reference example , only the main operation will be briefly described.
When the door panel 3 is in the closed position, most of the closing wire 82 is caught in the drive drum 81. When the start switch 20 on the front side is turned on in this state, the motor 28 is driven in the forward direction, the power of the motor 28 is transmitted to the traveling pulley 31 via the reduction mechanism 28b and the clutch 29, and the traveling pulley 31 moves the guide body 32. The winding operation is performed to open and move the door panel 3 toward the open position. At the same time, the closing wire 82 is gradually unwound from the drive drum 81. As described above, the piston rod 88 and the cylinder body 87 are extended in the process of opening and moving the door panel 3.

When the door panel 3 is opened and moved to a predetermined open position, the control device 19 reduces the voltage applied to the motor 28 to 50% of the voltage applied to the motor 28 to decelerate the motor 28, and slowly slows down the door panel 3. The motor 28 is stopped by moving it to the fully open position. Therefore, it is possible to prevent the door panel 3 from colliding with the opening frame due to the kinetic inertial force at the time of opening. Since the clutch 29 is engaged in the state where the motor 28 is stopped, the traveling pulley 31 does not rotate in the reverse direction at the same time when the motor 28 is stopped. Therefore, the door panel 3 is the mainspring of the return unit 77. The urging force of the spring 85 does not suddenly move in the closing direction. In this state, most of the closing wire 82 of the return unit 77 is unwound from the drive drum 81, and the mainspring 85 is sufficiently wound.

After the motor 28 is stopped, the control device 19 starts the timer, and when a predetermined time has elapsed from the start of the timer, it is considered that the entry / exit is completed and the timer is turned off. In the process of closing the door panel 3, the control device 19 reversely drives the motor 28 for a short time (about 0.5 seconds) to release the engagement of the clutch 29. The drive control of the motor 28 by the control device 19 ends at this point. In this state, the drive drum 81 receives the urging force of the spring 85 and winds the closing wire 82 while closing and moving the door panel 3. As the door panel 3 closes and moves, the magnet 92 at the tip of the piston rod 88 is attracted to the iron plate 93, and thereafter, only the cylinder body 87 moves with the door panel 3 to remove the air in the cylinder body 87. While pushing out, the closing movement operation of the door panel 3 is braked. Therefore, the door panel 3 can be slowly moved to the closed end.

By turning on the start switch 20 arranged on the back side of the door panel 3 from the above state, the door panel 3 can be automatically opened by the power of the motor 28 in the same manner as described above. Further, after the door panel 3 has moved to the fully open position, after a certain period of time has elapsed, the motor 28 is reversely driven for a short time to release the engagement of the clutch 29, thereby operating the return unit 77. , The fully opened door panel 3 can be moved to the closed position. As described above, by applying the drive structure utilizing the engagement of the clutch 29 to the semi-electric automatic sliding door, the control device 19 determines the timing at which the return unit 77 operates and the door panel 3 is returned and moved. Can be set accurately. Therefore, although it is a semi-electric automatic sliding door, the door panel 3 can be opened and closed accurately in the same manner as the fully electric automatic sliding door.

Since the operating conditions of the drive unit 17, the return unit 77, and the braking structure 78 while the fully opened door panel 3 moves to the closed position are as described above, the description thereof will be omitted. When the door panel 3 is opened by the motor power, if any obstacle such as a person or an object is in the open area of the door panel 3, the B system described in the reference example is controlled to control the motor. 28 is urgently stopped. In this state, if the obstacle is removed and the start switch 20 is turned on again, the door panel 3 can be opened by the power of the motor 28.

When the voltage of the secondary battery 24 drops, the door panel 3 can be manually opened and closed as in the reference example . For example, when the door panel 3 is opened from the closed position, the traveling pulley 31 rotates to wind the guide body 32. Since the rotational operation of the traveling pulley 31 at this time is disengaged by the clutch 29 composed of the bidirectional clutch, the rotational operation is not transmitted to the side of the motor 28. Therefore, the door panel 3 can be freely opened as needed. can.

According to the semi-electric automatic sliding door configured as described above, the drive unit 17 is composed of the clutch 29 including the motor 28 and the bidirectional clutch, the traveling pulley 31 and the guide body 32, and thus the conventional type of this type. Compared to the automatic sliding door, the number of component parts can be significantly reduced to make the drive unit 17 smaller and more compact. Therefore, as with the automatic sliding door in the reference example , there is no need to install a large lintel or guide rail, which was indispensable for conventional equipment, and it is used in the living room of a general house or the private room of a facility for the elderly. Even if the sliding door is lightweight and has a small door panel 3 and a guide rail 2, the drive unit 17 can be embedded in the door panel 3 without any trouble.

Further, since the door panel 3 is closed and operated by the return unit 77 using the mainspring 85 as the drive source, the drive opportunity of the motor 28 can be almost halved as compared with the fully electric automatic sliding door, and the consumption of the secondary battery 24 is suppressed. Therefore, the charging interval and the replacement interval can be expanded. Since the clutch 29 is composed of a bidirectional clutch, the door panel 3 can be manually opened as needed, as in the case of a fully electric automatic sliding door, and the door panel 3 can be opened even when the voltage of the secondary battery 24 drops. It is possible to enter and exit the space divided by the above without any trouble. There is also an advantage that the drive control of the motor 28 by the control device 19 can be simplified.

Further, in the semi-electric automatic sliding door, an air damper, a suspension wheel type runner 4, and a closing wire 82 are arranged inside the guide rail 2. According to such a sliding door, the runner 4, the braking structure 78, the closing wire 82, and the like can be concealed by the guide rail 2, and the impression of the appearance of the sliding door can be eliminated. Further, the closing wire 82 that is unwound or rewound each time the door panel 3 is opened and closed can be protected by the guide rail 2.

(Example 2 ) FIG. 16 shows Example 2 of the automatic sliding door according to the present invention. In the second embodiment, the secondary battery 24 can be automatically charged when the door panel 3 is in the closed position.
In FIG. 16, a control circuit 96 connected to a commercial power source for home use, a rectifier circuit 97, and a power supply terminal 98 are provided on the side of the opening frame 1, and a connector is provided on the side frame portion of the door panel 3 facing the power supply terminal 98. 99 was arranged and pushed out and urged by the spring 100. The connector 99 is connected to the output terminal of the secondary battery 24. When the charging device is provided on the side of the opening frame 1 in this way, the secondary battery 24 can be automatically charged when the door panel 3 is closed, so that the user can save the trouble of replacing the power supply battery. The convenience of the battery can be improved.

(Example 3 ) FIG. 17 shows Example 3 of the automatic sliding door according to the present invention. In the third embodiment, a charging device is provided between the opening frame 1 and the door panel 3 so that the secondary battery 24 can be charged in a non-contact state when the door panel 3 is closed. The charging device includes a power transmission device 102 provided on the side of the opening frame 1 and a power receiving device 103 provided on the side of the door panel 3. The power transmission device 102 generates an induced magnetic field by receiving a control circuit 104 connected to a commercial power source for home use, an oscillation circuit 105 that converts a commercial current into a high-frequency current, and a high-frequency current adjusted by the oscillation circuit 105. It includes a primary coil 106, a primary capacitor 107, and the like. The power receiving device 103 includes a secondary coil 108 corresponding to the primary coil 106, a secondary side capacitor 109, a rectifier circuit 110 for rectifying the received high frequency current, a regulator circuit 111, and the like. The power receiving device 103 may be provided in the vicinity of the power supply unit 18. As described above, if the charging device is provided between the opening frame 1 and the door panel 3, the secondary battery 24 can be charged in a non-contact state when the door panel 3 is closed, so that the power supply battery is replaced. You can save the trouble of doing it and further improve the convenience of the user.

In addition to the above, as a means for stopping the winding operation of the winding portion 48 of the traveling pulley 31, a torque limiter is arranged between the clutch 29 and the traveling pulley 31, and an abnormal rotational torque acts on the traveling pulley 31. At times, the pulley 31 may be idled. In this way, when the torque limiter cuts off the overload acting on the motor 28, the overload is cut off in a more reliable and stable state as compared with the case where the sheave body 31a is slipped with respect to the winding portion 48. can. Further, when the torque limiter is also used, the tension of the guide body 32 can be set to be stronger, so that the rotational operation of the traveling pulley 31 is more reliably transmitted to the winding portion 48, and the door panel 3 is snapped. It can be opened and closed. Further, the guide body 32 may be wound around the sheave body 31a more than once.

The automatic sliding door of the present invention can be applied to a sliding door of a door roller type as well as a sliding door of a hanging wheel type without any trouble. The automatic sliding door can also be applied to a sliding door in which the adjacent door panels 3 are opened one by one in the opposite direction. In that case, each door panel 3 is configured as a fully electric or semi-electric automatic sliding door. All you need is. The clutch 29 in the semi-electric automatic sliding door may be a one-way clutch. The guide body 32 may be formed of a narrow and thin tape-shaped belt in addition to being formed of a wire cable. The position sensor 70 can be composed of an infrared sensor or an ultrasonic sensor, and these sensors can be embedded in a plurality of places above and below the panel frame on the open end side of the door panel 3 to reach the opening frame 1. It is possible to detect that the door panel 3 has been opened to a predetermined open position from the change in distance. As the braking structure 78, a rotary damper can be applied in addition to the cylinder type air damper. As the storage body 85, an N-type constant load spring unit can be applied in addition to the mainspring. If necessary, the power supply battery 24 may be composed of a primary battery.

1 Opening frame 2 Guide rail 3 Door panel 17 Drive unit 18 Power supply unit 19 Control device 20 Start switch (switch body)
24 Secondary battery (power supply battery)
27 Unit base 28 Motor 28a Forward / reverse motor 28b Deceleration mechanism 29 Clutch 31 Traveling pulley 32 Guide body 46 Tension spring 47 Tension adjustment structure 48 Winding part 70 Position sensor 71 1st magnetic sensor 72 2nd magnetic sensor 73 1st magnet 74 No. 2 Magnet 77 Return unit 78 Braking mechanism 81 Drive drum 82 Closing wire 85 Mainspring (accumulator)
87 Cylinder body 88 Piston rod E Gap

Claims (7)

A door panel (3) that can be opened and closed and supported along a guide rail (2) provided in the opening frame (1) and a door panel (3) provided in the door panel (3) are moved by motor power. The drive unit (17) to be operated, the return unit (77) embedded in the door panel (3) to return the moved door panel (3), and the return movement of the door panel (3) are braked. Equipped with a braking structure (78) ,
The drive unit (17) includes a unit base (27) embedded and fixed in the door panel (3), a motor (28) housed in the base (27), a clutch (29), and a clutch (29). A traveling pulley (31) that is rotationally driven by the power that has passed through, and a guide body (32) that is fixed to the closed end and the open end of the opening frame (1) and whose intermediate portion is wound around the traveling pulley (31). I have
The door panel (3) has a power supply unit (18) provided with a power supply battery (24), a switch body (20) for activating the motor (28), and a control device for controlling the drive state of the motor (28). (19) is provided,
A position sensor (70) for detecting the moving position of the door panel (3) is provided between the opening frame (1) and the door panel (3).
The control device (19) activates the motor (28) based on the output signal of the switch body (20), controls the drive state of the motor (28) based on the output signal of the position sensor (70), and controls the drive state of the door panel. (3) is configured to automatically open / close and move.
The motor (28) is composed of a geared motor integrally equipped with a forward / reverse rotation motor (28a) capable of forward rotation drive and reverse rotation drive and a reduction mechanism (28b).
The clutch (29) transmits the rotational power of the motor (28) in both forward and reverse directions to the traveling pulley (31), but cuts off the rotational operation that is transmitted from the traveling pulley (31) to the motor (28). It consists of a clutch and
The return unit (77) is wound with a drive drum (81), a closing wire (82) that is fed from the drum (81) and whose feeding end is fixed to the guide rail (2), and a closing wire (82). It is equipped with a power storage body (85) that rotates and urges the drive drum (81) in the direction of insertion.
The door panel (3) is automatically moved and operated by the rotational power of the motor (28), and the moved door panel (3) is returned and moved by the return unit (77) while being braked by the braking structure (78). An automatic sliding door that is characterized by being configured in . One end of the guide body (32) formed by the wire cable is fixed to either the closed end or the open end of the opening frame (1), and the other end is the tension spring (46) and the same spring (46). ) Is fixed to the other end of the opening frame (1) via a tension adjusting structure (47) that adjusts the spring force.
The guide body (32) is provided with a winding portion (48) that is wound around the sheave body (31a) of the traveling pulley (31) in a circular manner.
In a state where the door panel (3) in the middle of opening and closing is received by an obstacle and stopped, the guide body (31) slips with respect to the winding portion (48) and stops the winding operation. 32) The automatic sliding door according to claim 1, wherein the tension of 32) is adjusted by the tension adjusting structure (47) . A torque limiter is arranged between the clutch (29) and the traveling pulley (31).
The automatic sliding door according to claim 1, wherein the torque limiter operates to stop the winding operation of the traveling pulley (31) in a state where the door panel (3) in the middle of opening and closing is received by an obstacle and stopped . The suspension wheel type runner (4) provided on the door panel (3) is guided and supported by the guide rail (2) so as to be openable and closable.
The upper surface of the door panel (3) faces up and down with the lower surface of the guide rail (2) via the gap (E).
The automatic sliding door according to any one of claims 1 to 3, wherein a guide body (32) and a sheave body (31a) of a traveling pulley (31) are arranged in the gap (E) . The position sensor (70) is provided on the side of the door panel (3), the first and second magnetic sensors (71.72), and the first and second magnets (1) provided on the side of the opening frame (1). 73.74) and
The first magnetic sensor (71) is located in the upper corner of the door panel (3) near the closed end, and the second magnetic sensor (72) is located in the upper corner of the door panel (3) near the open end.
The first magnet (73) and the second magnet (74) are arranged near the center of the upper frame of the opening frame (1) at a certain distance from each other.
The control device (19) controls the drive state of the motor (28) based on the output signals of the first and second magnetic sensors (71 and 72), and decelerates the door panel (3) near the opening / closing end. The automatic sliding door according to any one of claims 1 to 4 . The door panel (3) is moved to either the open end or the closed end by the drive unit (17), and the clutch (29) is engaged in a state where the motor (28) is stopped. This is used to prevent the return movement of the door panel (3).
The control device (19) drives the motor (28) to rotate in the direction opposite to the rotation direction for a moment to release the engagement of the clutch (29), and the return unit (77) presses the door panel (3). The automatic sliding door according to any one of claims 1 to 5, which is to be returned and moved . The braking structure (78) is composed of a cylinder body (87) and a cylinder type air damper equipped with a piston rod (88).
Inside the guide rail (2), a suspension wheel type runner (4), a closing wire (82) unwound from the drive drum (81), a cylinder body (87), and a piston rod (88) are arranged. The automatic sliding door according to any one of claims 1 to 6 .

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