JP2011032669A - Self-closing sliding door apparatus - Google Patents

Abstract

A self-closing type sliding door device is configured so that a door body can be easily opened.
A self-closing device provided in a sliding door device has an operating body 7a that is displaced between a closed position and an open position that are preset in accordance with an opening / closing operation of the door body 1, and the operating body 7a is connected to the door body 1. In the closing control unit 5 provided with a closing control unit 5 provided with a biasing member that biases the door body 1 by biasing it in the closing direction, a passer detection sensor 15 for detecting a passer is provided. The encoder 13 that detects the position of the operating body 7a and the forced displacement unit 9 that forcibly displaces the operating body 7a to the open position side are configured to be interlocked.
[Selection] Figure 3

Description

  The present invention relates to a technical field of a self-closing type sliding door device provided at an entrance / exit part in a hospital or factory, and further at an opening part such as an entrance / exit part for evacuation in a tunnel.

  In general, among the opening and closing devices provided in the opening that forms the entrance and the like, a self-closing type sliding door device having a self-closing device configured to automatically close a sliding door type door body that is manually opened is known. It has been. In the case where such a self-closing type sliding door device is provided, for example, at the entrance / exit part to the evacuation path in the tunnel, the manual closing operation can be freely performed after manually opening the door body constituting the sliding door device. Instead of automatically closing immediately after the door is opened by the door, considering the subsequent evacuees, the closing operation by the self-closing device starts after a predetermined time has elapsed after opening, and the door is always fully closed In order to prevent the body from being opened due to wind pressure or the like due to traveling of the vehicle, a necessary condition occurs such that the fully closed door body is biased in the closing direction. In this case, the self-closing device moves following (in conjunction with) the opening operation (door opening operation) of the door body, but interferes with the door body so as not to follow the closing operation (door closing operation). The actuating body and the actuating body are urged toward the closing direction to cause the opened door body to be closed (self-closing) while the actuating body pushes the door, and the door body in the fully closed position is opened. A closing control means provided with an urging member that holds it so as not to occur, and is incorporated in the closing control means to restrict the movement of the operating body in the closing direction during a predetermined timer time with the opening operation of the door body. Thus, a door closing delay means for delaying the closing operation of the door body is proposed, which can realize each of the above requirements.

Japanese Utility Model Publication No. 5-33654

  However, in the above-mentioned conventional one, not only the urging force in the closing direction is always applied to the operating body by the urging member provided in the closing control means, but also when the operating body moves in the opening direction, the door is closed. The load for starting the delay means is acting. When the door body is opened from the fully closed position, the door body pushes the operating body in the door opening direction. Therefore, the door body opening operation force includes a load based on the weight of the door body, and the door. A large operating force against all of the biasing force in the closing direction of the biasing member acting on the actuating member that interferes with the body and the load for starting the closing delay means is required, which is necessary for wheelchair users and the elderly However, when the operation becomes heavy and it is necessary to deal with it urgently, it is assumed that smooth and quick opening operation cannot be performed, and there is a problem to be solved by the present invention.

The present invention was created in order to solve these problems in view of the above circumstances, and the invention of claim 1 provides a self-closing device provided in a sliding door device that opens and closes an opening. An operating body that displaces between a preset closed position and an open position in accordance with the opening / closing operation of the door body, and a biasing member that biases the operating body in the door closing direction to close the door body. In the construction of the closure control means, a passer detection sensor for detecting a passer-by is provided, while the closure control means is provided with a position detection sensor for detecting the position of the operating body, and the operating body is forced to the open position side. It is characterized in that the forced displacement means to be displaced is interlocked and connected, and the forced displacement means is driven based on the detection of the passer detection sensor and the position detection sensor to reduce the opening operation force of the door body. Self-closing sliding door device.
The invention according to claim 2 is characterized in that the forced displacement means is driven on the basis of detection of a passerby and detection that the operating body is located at the closed position. It is a closed type sliding door device.
The invention according to claim 3 is characterized in that the forcible displacement means is configured to be driven based on detection of a passerby and detection that the operating body is positioned in the vicinity of the closed position. It is a self-closing type sliding door device.
According to a fourth aspect of the present invention, the closing control means includes an operating wire connected to the operating body, a winding pulley that winds up the operating wire, and a biasing member that biases the winding pulley in the winding direction of the operating wire. The forcible displacement means includes an electric motor and a drive shaft that is linked to the output shaft of the electric motor via a clutch, and the drive shaft is a take-up pulley. The drive shaft transmits the drive of the electric motor to the winding pulley while the clutch is engaged, unwinds the operating wire and displaces it to the open position, and follows the rotation of the winding pulley when the clutch is disconnected. The self-closing sliding door device according to any one of claims 1 to 3, wherein the sliding door device is configured to rotate.
5. The invention according to claim 5, wherein the reduction of the opening operation force of the door body is to displace the operating body to the open position side prior to the opening operation of the door body. This is a self-closing type sliding door device.

According to the invention of claim 1, by displace the operating body that self-closes the door body to the open position as necessary, the opening operation force of the door body can be reduced, and the self-closing type has good operability. It can be a sliding door device.
According to the invention of claim 2, the displacement operation of the operating body is started in accordance with the opening operation of the passerby, the opening operating force is reduced, the operability is improved, and the operating body exceeds the open position. There are no problems that cause displacement.
With the invention of claim 3, the operability can be further improved.
According to the invention of claim 4, the member can be made compact.
According to the fifth aspect of the present invention, the operating body is displaced prior to the opening operation of the door body, so that the operating force during the opening operation can be reliably reduced.

It is a front view of a self-closing type sliding door device. It is a front view of the principal part. It is a top view of the principal part. It is a front view explaining the effect | action of this invention. It is a front view explaining the effect | action of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a door body that constitutes a sliding door device, and the door body 1 in this embodiment includes a roller 2a that is supported by a pair of left and right roller brackets 2 fixed to the upper end portion of the door body 1. By moving the guide rail 4 fixed to the upper frame 3 constituting the upper part of the opening so as to be movable in the left-right direction, the shape is changed between a fully closed position in which the opening is fully closed and a fully open position in which the opening is fully opened. It is configured. Then, a door closing side unit (the right end part in FIG. 1) of the upper frame 3 to which the guide rail 4 is fixed is provided with a closing control unit (the present invention) that constitutes a self-closing device for self-closing the door 1 (Corresponding to the closing control means) 5 is attached, whereby the door body 1 constitutes a self-closing sliding door device.

  The closing control unit 5 includes a box-shaped casing 5a, and an operating shaft 6 extending in the front-rear direction is rotated at a substantially central portion of the casing 5a in the left-right direction (opening / closing direction of the door 1). It is freely supported. One end of the operating shaft 6 penetrates the casing 5a and protrudes forward. A winding pulley 6a is integrally fixed to the protruding end, and one end of the operating wire 7 is wound around the winding pulley 6a. It is configured to be worn. The other end of the working wire 7 is unwound from the take-up pulley 6a toward the door end, and the other end thus unwound is a first pulley provided on the door end of the casing 5a. 5b, wound around (via) a second pulley 3a provided on the door end side of the upper frame 3 and directed toward the door bottom in a state of being positioned behind the pair of left and right roller brackets 2 above the door body 1 Are configured to be pulled out. The other end portion of the working wire 7 drawn out to the door butt side is configured to be wound around a winding device 8 provided at the door butt side end portion of the upper frame 3.

The operating shaft 6 is interlocked and connected to an unillustrated biasing machine (corresponding to the biasing member of the present invention, which is constituted by a winding spring) housed in the casing 5a, and the operating wire 7 is wound. As the take-up pulley 6a (actuating shaft 6) rotates in the direction of arrow X, the biasing force in the direction of winding the actuating wire 7 (direction in which the take-up pulley 6a is rotated in the counter-arrow X direction) is stored. It is configured to force. On the other hand, the winding device 8 is provided with a winding spring (not shown) biased in the direction of winding the other end of the working wire 7 so that the working wire 7 is wound on the winding pulley 6a. It is comprised between the winding device 8 and the winding device 8 so as to always extend in a tension state between the door tip side portion of the upper frame 3 and the door bottom side portion.
At this time, the urging force in the winding direction of the urging ammunition housed in the casing 5 a is set to always exceed the urging force in the winding direction of the winding spring housed in the winding device 8. As a result, the closing control unit 5 allows the winding pulley 6a to wind up the working wire 7 when the working wire 7 is unwound from the winding pulley 6a against the biasing force of the biasing ammunition. The actuating wire 7 is forcibly wound around the take-up pulley 6a based on the urging force, that is, the urging force that displaces the actuating wire 7 in the closing direction (door closing direction) of the door body 1.

Further, the operating shaft 6 is interlocked and connected to a door closing delay means (not shown), and when the operating wire 7 is unwound by a predetermined unwinding amount against the biasing force of the biasing ammunition, the door closing delay means. Is configured to start. When the door closing delay means is activated, the winding pulley 6a regulates the rotation in the direction of winding the working wire 7 (counter arrow X direction) for a preset timer time, and the timer time has elapsed. The rotation restriction is later released. Thus, when the working wire 7 is unwound from the winding pulley 6a, the working wire 7 is forcibly wound around the winding pulley 6a after a predetermined timer time (for example, 60 seconds) has elapsed. Yes.
In addition, since these structures are comprised based on the basic structure similar to the above-mentioned prior art document, it abbreviate | omits about detailed description here.

One of the pair of left and right roller brackets 2 of the door body 1 is integrally provided with an engagement arm 1a projecting rearward at the lower end of the roller bracket 2 located on the door end side. The operating wire 7 is integrally provided with an operating body 7a. And in this Embodiment, in the fully closed attitude | position of the door body 1, the action body 7a is located in the closed position which latches to the engagement arm 1a which protrudes from the door body 1 from the door butt side (closing direction). Is set to Thus, by locking the operating body 7a from the door bottom side with respect to the engaging arm 1a, the operating body 7a can freely move the door body 1 in the opening direction without interfering with the door body 1. It is configured to be movable.
The actuating body 7a located at the closed position receives the energizing force of the energizing ammunition and always receives the energizing force in the door closing direction, and the actuating body 7a is applied to the engagement arm 1a of the door body 1 in the fully closed position. By being locked, the door body 1 in the fully closed posture is prevented from being opened by wind pressure or the like.
As will be described later, the actuating body 7a is configured to be forcibly displaced by the forcible displacement means from the closed position toward the open position where the engagement arm 1a of the door body 1 in the fully open position is locked from the door bottom side. Has been. At this time, the operating body 7a is held in the open position for the timer time by the door closing delay device. In this state, the operating body 7a is locked to the engagement arm 1a from the door bottom side. The body 1 can move freely in the closing direction, and the door body 1 can be manually closed. When the timer time by the door closing delay device has elapsed, the winding pulley 6a is displaced toward the door closing side based on the winding of the operating wire 7, so that the operating body 7a pushes the engagement arm 1a in the door. The body 1 is forcibly closed (self-closed).

Next, the forced displacement unit 9 corresponding to the forced displacement means in which the present invention is implemented will be described. The forced displacement unit 9 is adjacent to the door bottom side portion of the base 5c to which the closing control unit 5 is fixed. Arranged in conjunction with the closing control unit 5.
As the electric motor constituting the forced displacement unit 9, a geared motor 10 that is provided with a speed reduction mechanism on a rotating shaft and that can obtain a large torque while being small is used, and a motor that protrudes to the door end side of the geared motor 10. A shaft (not shown) is input to a speed reduction portion 10a having a speed reduction function and a power take-off direction conversion function, and an output shaft 10b is provided to project forward from the front end surface of the speed reduction portion 10a. . The output shaft 10b is interlocked with the drive shaft 12 via an excitation clutch 11 interposed at the protruding end portion. A pair of front and rear first and second sprockets are connected to the front end portion of the drive shaft 12. 12a and 12b are integrally fixed, and the first and second sprockets 12a and 12b are configured to rotate synchronously.
Reference numeral 11 a denotes a support plate for supporting the excitation clutch 11, and the lower end of the support plate 11 a is fixed to the base 5 c of the closing control unit 5.

  On the other hand, a take-up sprocket 6b is integrally provided on the take-up pulley 6a provided on the operating shaft 6 protruding forward from the casing 5a of the closing control unit 5 in a state of being fixed to the front end surface. A first chain 12d is interposed between the take-up sprocket 6b and the first sprocket 12a of the forced displacement unit 9, whereby the take-up sprocket 6b and the first sprocket 12a Are coupled together, and the other sprocket 12a or 6b rotates in the same direction as one sprocket 6b or 12a rotates.

  In addition, a lower end portion of a support plate 13a on which the encoder 13 constituting the position detection sensor of the present invention is supported is fixed to the base 5c exposed in front of the geared motor 10. Between the position detection sprocket 13c integrally fixed to the rotary support shaft 13b of the encoder 13 and the second sprocket 12b fixed to the drive shaft 12 of the forced displacement unit 9, the second chain 12e is interposed, whereby the position detection sprocket 13c and the second sprocket 12b are interlocked and connected so that when the second sprocket 12b is rotated, the position detection sprocket 13c rotates in the same direction. It is configured.

The forced displacement unit 9 is configured such that the output shaft 10b and the drive shaft 12 are in a power connection state when the excitation clutch 11 is in an excited state. In this state, when the geared motor 10 rotates, an output is generated. The rotational force of the geared motor 10 is transmitted to the drive shaft 12 via the shaft 10b, and the winding pulley 6a is forcedly rotated against the biasing force of the biasing ammunition via the first sprocket 12a and the winding sprocket 6b. At least, the working wire 7 is unwound from the take-up pulley 6a. In this case, the encoder 13 is configured to detect the position of the working wire 7 by rotating the position detecting sprocket 13c via the second sprocket 12b fixed to the drive shaft 12.
On the other hand, when the excitation clutch 11 is not excited, the output shaft 10b and the drive shaft 12 are configured to be in a power cut state. In this state, the drive shaft 12 is the geared motor 10 (output shaft 10b). When the actuating wire 7 is wound around the take-up pulley 6a or is taken out and the take-up pulley 6a is rotated, the rotation of the take-up sprocket 6b is followed. The first and second sprockets 12a and 12b are configured to rotate. Even in this case, the encoder 13 is configured such that the position detection sprocket 13c rotates via the second sprocket 12b, thereby detecting the position of the working wire 7.
Here, the position detection sprocket 13c of the encoder 13 detects the unwinding amount and the winding amount of the working wire 7 from the winding pulley 6a via the drive shaft 12. As described above, the winding sprocket 6b is configured to always rotate in synchronization with the forward and reverse rotation. As a result, the unwinding and winding amount of the working wire 7 can be detected in the same manner as when the encoder 13 is directly linked to the winding pulley 6a (winding sprocket 6b), and by connecting to the drive shaft 12, In providing the encoder 13 in the closing control unit 5, it is comprised so that a compact layout can be carried out.

The geared motor 10 and the excitation clutch 11 of the forced displacement unit 9 are connected to a drive control unit 14 and are configured to be driven and controlled by a drive command from the drive control unit 14. The drive control unit 14 is configured to receive a detection signal from the encoder 13. Further, a passer-by detection sensor 15 provided in the upper frame 3 above the opening is connected to the drive control unit 14, and a passer-by detection signal is sent to the drive control unit when a passerby approaches the opening. 14 is input. Then, the drive control unit 14 outputs drive commands to the geared motor 10 and the excitation clutch 11 based on the detection by the encoder 13 and the passer-by detection sensor 15 to drive them, so that the operating body 7a is opened as necessary. It is configured so that it can be forcibly displaced to the side.
Note that a non-contact general-purpose sensor using infrared rays is used as the passer-by detection sensor 15, and a description thereof is omitted here.

That is, the drive control unit 14 is connected to the operation wire 7 based on the detection signal from the encoder 13 when the passerby approaches the opening and the passer detection sensor 15 receives the passer detection signal. It is comprised so that the position of the action body 7a may be detected. When it is determined that the position of the operating body 7a is in the closed position, the drive control unit 14 drives the forced displacement unit 9, that is, outputs a drive command to the excitation clutch 11 to output the excitation clutch 11 Is switched to the excited state, and a drive command is output to the geared motor 10 so that the geared motor 10 is in a predetermined direction, and the take-up pulley 6a is driven in the arrow X direction (direction in which the working wire 7 is unwound) via the drive shaft 12. It is configured to rotate. As a result, the operating wire 7 is unwound from the take-up pulley 6a, and the operating body 7a is engaged with the door body 1 in the fully open position from the closed position that interferes with the engaging arm 1a of the door body 1 in the fully closed position. The operation of forcibly displacing toward the open position that interferes with the arm 1a is started. At this time, the unwound operating wire 7 is wound by the winding device 8 so that the operating body 7a is displaced to the open position side. When the drive control unit 14 determines that the operating body 7a has reached the open position to be engaged with the engagement arm 1a of the door body 1 in the fully open position based on the detection signal from the encoder 13, It is configured to stop the output.
Here, the forced displacement unit 9 does not necessarily need to forcibly displace the operating body 7a to the open position, and the forced displacement end on the open position side is completed according to the optimal opening amount of the door body 1 for a passerby to enter and exit. The position can be set.

Below, the procedure of the opening / closing operation | movement of the door body 1 in a self-closing type sliding door apparatus is demonstrated.
When a passerby approaches the door 1, the passer detection sensor 15 provided in the opening detects the passerby and outputs a passer detection signal. When the passer-by detection signal is input to the drive control unit 14 constituting the forced displacement unit 9, the drive control unit 14 detects the position of the operating body 7 a based on the detection signal from the position detection sensor 13. When the drive control unit 14 determines that the door body 1 is in the fully closed position and the operating body 7a is in the closed position, as described above, the drive control unit 14 applies the geared motor 10 and the excitation clutch 11 to each other. A drive command is output, the actuating wire 7 is forcibly unwound from the take-up pulley 6a to start the forcible displacement operation of the actuating body 7a from the closed position toward the open position, and unwinds by reaching the open position. Is configured to stop.
As described above, the actuating body 7a starts to be forcedly displaced toward the open position when the passerby approaches, and when the passerby touches the door body 1 to perform the opening operation, the operation body 7a precedes the operation. Thus, the actuating body 7a moves away from the door body 1 and is displaced toward the open position, and the biasing force of the biasing ammunition acting on the door body 1 via the actuating body 7a or the closing of the door The load for starting the delay means is eliminated. As a result, when the passerby opens the door body 1, the door body 1 can be opened with an operation force that resists only the load based on the weight of the door body 1, and the opening operation force can be reduced. (See FIG. 4).
Incidentally, the forced displacement unit 9 is driven until the passerby approaches the door body 1 until it touches the door body 1 so that the forced displacement operation from the closed position to the open position side is started. Thus, prior to the start of the passer's opening operation, the actuating body 7a is separated from the door 1 so that the passer's opening operation force can be reduced. Moreover, it is preferable that the displacement speed | rate of the action body 7a is set to a speed quicker than the speed based on a passer's operation.

Thus, in the state where the operating body 7a is forcibly displaced to the open position side, a passer-by can open the door body 1 with a smooth and light operation, but the operating body 7a is displaced to the open position. In this state, the door closing delay means is activated, and the actuating wire 7 is not taken up by the take-up pulley 6a for a preset timer time from the activation time, and the actuating body 7a is in the open position. It is configured to be retained. Even if the next passerby approaches the door body 1 and the passer detection sensor 15 detects the passerby during this timer time, since the operating body 7a is located at the open position, the geared motor 10, the excitation clutch 11 is not driven, and the actuating body 7a can be held in the open position.
On the other hand, as described above, the door body 1 is configured such that the operation body 7a does not restrict the operation in the closing direction, so that a manual closing operation by a passer-by can be performed freely. . When the next passer-by opens the door body 1 manually closed by the preceding passer-by, if the operation is during the timer time, the operating body 7a is held in the open position and the door Since it does not interfere with the body 1, it can be carried out smoothly and lightly.

When the timer time of the door closing delay means has elapsed, the winding pulley 6a receives the urging force of the urging ammunition to wind up the operating wire 7, and the operating body 7a that is displaced in the closing direction in accordance with this takes up the door body. It is configured so as to be closed by pushing 1 and to be fully closed. Incidentally, in the state in which the timer time has elapsed, the door body 1 is moved in the process in which the operating body 7a is displaced from the open position to the closed position regardless of whether the door body 1 is in the fully open position or the halfway open position. It can be in a fully closed position.
It is assumed that the door body 1 is not opened even when a passerby approaches the door body 1 (see FIG. 5). In this case, the operating body 7a is forcibly displaced to the open position, but the door closing delay If the timer time of the means elapses, the operating wire 7 is wound around the take-up pulley 6a and returns to the original state located at the closed position, so that there is no influence on the fully closed posture of the door body 1, and the door body 1 There is no problem that opens carelessly.

  In the present embodiment configured as described, the door body 1 is provided with a self-closing device, which is automatically closed when a predetermined timer time elapses after being manually opened. Since the self-closing device is provided with a forced displacement unit 9 that forcibly displaces the operating body 7a from the closed position toward the open position, the operating body 7a is opened on the open position side prior to the opening operation by the passerby. , The actuating body 7a receiving the urging force in the closing direction of the urging ammunition does not act on the door body 1, and the door body 1 is opened smoothly and lightly. It is possible to reduce the opening operation force. As a result, it is possible to easily open the door body 1 even for a wheelchair user, an elderly person, or a passerby with heavy luggage, and a self-closing sliding door device with good operability. It can be.

  Further, in this device, since the passerby approaching the opening is detected and the forced displacement unit 9 is driven when the operating body 7a is located at the closed position, the opening operation force of the door body 1 is reduced. In addition, the problem that the operating body 7a is displaced beyond the open position is avoided.

  Further, the forced displacement unit 9 is provided adjacent to the closing control unit 5, and a winding pulley 6 a that winds up the working wire 7 to which the working body 7 a is coupled and the drive shaft 12 of the forced displacement unit 9 are interlockedly coupled. Since it was set as the structure, it is not necessary to provide the forced displacement unit 9 separately, and can achieve a compact member.

  In addition, in this case, the forced displacement unit 9 is driven by the detection of a passerby approaching the entrance / exit by the passer detection sensor 15 provided at the entrance / exit, so that the door body 1 is opened prior to the opening operation. Forcible displacement of the actuating body 7a toward the open position side is started, so that reduction of the opening operation force can be realized with certainty.

Needless to say, the present invention is not limited to the above-described embodiment, and when the forced displacement means (electric motor) is driven, the detection of the passerby (input of the passer detection signal) and the position of the operating body. May be configured to drive the forcible displacement means based on the detection of the position near the closed position including the closed position, and forcibly displace the operating body located near the closed position toward the open position. . And in this case, not only when the door body closes to the fully closed position and performs the opening operation, the door body that is kept open by the door closing delay means is changed to the fully closed position based on the closing control means. In the process of closing, even when a passerby approaches and tries to open the door, the operating body is displaced to the open position side prior to the opening operation, so that the opening operation force can be reduced. As a result, a self-closing type sliding door device with further improved operability can be obtained.
Moreover, as a passer-by detection sensor, it can also be set as the structure provided in a handle etc. when opening a door body and a door body.

  INDUSTRIAL APPLICABILITY The present invention can be used for a self-closing type sliding door device provided at an entrance / exit such as a hospital or an escape route in a tunnel.

DESCRIPTION OF SYMBOLS 1 Door body 1a Engaging arm 2 Roller bracket 5 Closure control unit 6 Actuation shaft 6a Winding pulley 6b Winding sprocket 7 Actuation wire 7a Actuator 8 Winding device 9 Forced displacement unit 10 Geared motor 11 Excitation clutch 12 Drive shaft 12a First One sprocket 12b Second sprocket 13 Encoder 13c Position detection sprocket 14 Drive controller 15 Passer detection sensor

Claims (5)

The self-closing device provided in the sliding door device that opens and closes the opening includes an operating body that displaces between a closed position and an open position that are set in advance with the opening and closing operation of the door body, and the closing direction of the door body. And a closing control means provided with a biasing member for closing the door body to provide a passer detection sensor for detecting a passer-by, while detecting the position of the operating body in the closing control means. The position detection sensor and the forced displacement means for forcibly displacing the operating body to the open position side are interlocked and connected, and the forced displacement means is driven based on the detection of the passer-by detection sensor and the position detection sensor. A self-closing type sliding door device characterized by reducing the opening operation force of the body. The self-closing sliding door device according to claim 1, wherein the forcible displacement means is configured to be driven based on detection of a passerby and detection that the operating body is located at the closed position. The self-closing sliding door device according to claim 1, wherein the forcible displacement means is configured to be driven based on detection of a passerby and detection that the operating body is located in the vicinity of the closed position. The closing control means includes an operating wire connected to the operating body, a winding pulley that winds the operating wire, and a biasing member that biases the winding pulley in the winding direction of the operating wire. The forcible displacement means comprises an electric motor and a drive shaft that is linked to the output shaft of the electric motor via a clutch, and the drive shaft is linked to a take-up pulley to drive the drive shaft. However, when the clutch is engaged, the drive of the electric motor is transmitted to the take-up pulley, the operation wire is unwound and displaced to the open position side, and the clutch is turned off to follow the rotation of the take-up pulley. The self-closing type sliding door device according to any one of claims 1 to 3. The self-closing type sliding door device according to any one of claims 1 to 4, wherein the reduction of the opening operation force of the door body is to displace the operating body to the open position side prior to the opening operation of the door body.

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