JP2020041410A - Dragging detection device and sliding door device - Google Patents

Abstract

To provide a sliding door device that includes a dragging detection device which detects the occurrence of a sliding door being dragged after the sliding door is closed, the dragging detection device achieving a reduction in excessive detection for the occurrence of dragging together with high-sensitivity detection for the occurrence of dragging.SOLUTION: The present invention includes a rotary body that is rotatably provided on a door end of a sliding door (right door), a rotation detector that detects the rotation of the rotary body, and dragging determination means (control unit) that determines that dragging has occurred when receiving a detection signal from the rotation detector. The rotary body rotates about a rotary shaft that is positioned along the door end and is slidable in the opening direction of the sliding door, and includes slide detection means that detects the sliding of the rotary body. The dragging determination means determines that dragging has occurred when receiving a detection signal from the slide detection means after the sliding door is closed.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a drag detection device that detects the occurrence of a drag state after a sliding door is closed, and a sliding door device including the drag detection device.

2. Description of the Related Art Conventionally, in a sliding door device that opens and closes an entrance of a railway car, an elevator, or the like, when a sliding door is closed, a part of a human body or an object (hereinafter, simply referred to as an “object”) is detected in order to detect an occurrence of a door-jam state. Various door jam detection devices have been proposed.
Specifically, for example, while the doorway of the vehicle is opened by being displaced in the opening direction, the doorhead portion of the door plate that closes the doorway of the vehicle by being displaced in the closing direction, and the doorhead portion when the doorway is closed, A flexible buffer provided in at least one of the opposing door stops and having a fluid sealed in a sealed internal space, and a pressure detection detecting a pressure of the fluid in the internal space of the buffer. There has been proposed a door-jam detection device including means and a door-jam determination unit that outputs a door-jam signal when the detected pressure of the fluid in the internal space is higher than a predetermined pressure (see Patent Document 1).
Further, for example, in a door pinch detection device used for a sliding door, an object contact portion that contacts an object existing in a closing direction of the sliding door and can be displaced in a direction opposite to the closing direction of the sliding door, and a displacement of the object contact portion. A door pinch detection unit that detects a door pinch based on the amount, and a door pinch detection device in which the object contacting portion is further displaced even after the door pinch is detected by the door pinch detection unit. Reference 2).

JP 2001-55138 A JP 2001-55866 A

Here, the door-jam state includes a "door-jam state where the passenger is outside the vehicle or the like" and a "door-jam state where the passenger is inside the vehicle or the like".
When the passenger is outside the vehicle (eg, getting off the vehicle) and a door-jamming state occurs and the object caught in the sliding door cannot be pulled out, if the vehicle or the like moves as it is, the passenger moves to the vehicle. It may lead to an accident by being dragged. Further, when a passenger is inside a vehicle or the like (that is, a state where the passenger is riding in a vehicle or the like) and a door-jamming state occurs and the object caught in the sliding door cannot be pulled out, if the object is a cane or the like, When the vehicle or the like moves as it is, the object may come into contact with a person or the like outside the vehicle or the like, leading to an accident.

The conventional door pinch detection device is configured to detect the occurrence of a door pinch state by detecting a force that an object pinched by the sliding door pushes the sliding door in the opening direction. Specifically, the door pinch detection device described in Patent Literature 1 detects a force that an object interposed between the sliding doors pushes the sliding door in the opening direction based on the pressure received by at least one of the door tip portion and the door stop portion. It is configured to detect the occurrence of a pinched state. Further, the door pinch detection device described in Patent Document 2 detects a force that an object sandwiched between the sliding doors pushes the sliding door in an opening direction based on a displacement amount of an object contact portion that can be displaced in a direction opposite to a closing direction of the sliding door. Then, it is configured to detect the occurrence of the pinching state.
Therefore, in order to reliably detect the occurrence of the pinching state and the subsequent occurrence of the dragging state, a thin object (hem of clothes, a cloth bag, etc.) or a thin object (an umbrella, Even if it is a cane, if the detection accuracy is improved so that the object can detect the force that pushes the sliding door in the opening direction, the occurrence of a pinching state or a dragging state is excessively detected, and a train, an elevator, etc. There is a problem that it hinders the operation of the train more than necessary. On the other hand, if the detection accuracy is reduced so as not to excessively detect the occurrence of the pinched state or the dragging state, there is a problem that the occurrence of the pinched state or the dragging state cannot be detected when a thin or thin object is caught.

  The present invention has been made in view of the above circumstances, and in a drag detection device that detects the occurrence of a drag state after a sliding door is closed, and in a sliding door device including the drag detection device, excessive occurrence of a drag state is caused. An object of the present invention is to achieve both suppression of detection and realization of high-sensitivity detection of the occurrence of a drag state.

In order to solve the above-described problems, a drag detection device of the present invention includes:
A drag detection device that detects the occurrence of a drag state after a sliding door is closed,
A rotating body rotatably provided at the tip of the sliding door,
Rotation detection means for detecting the rotation of the rotating body,
When a detection signal is received from the rotation detection unit, a drag state determination unit that determines that the drag state has occurred,
With
The rotating body is rotated around a rotation axis arranged along the door tip, is slidable in the opening direction of the sliding door,
A sliding movement detecting unit that detects the sliding movement of the rotating body,
The drag state determination means is configured to determine that the drag state has occurred when receiving a detection signal from the slide movement detection means after the sliding door has been closed.

Therefore, instead of detecting the occurrence of a dragging state by detecting the force of the object caught in the sliding door to push the sliding door in the opening direction, it detects the change caused by the object caught in the sliding door being pulled after the sliding door is closed. To detect the occurrence of a drag state. Therefore, both suppression of excessive detection of the occurrence of a drag state and realization of high-sensitivity detection of the occurrence of a drag state can be achieved.
Also, in this way, after the sliding door is closed, by detecting the force of the object caught in the sliding door pushing the sliding door in the opening direction to detect the occurrence of the dragging state, the occurrence of the dragging state is detected. Various accidents can be avoided while suppressing excessive detection.

Also preferably,
The drag state determination means may be configured to invalidate the rotation detection means when a predetermined time has elapsed from the door closed state.

  As a result, the dragging state and the like can be appropriately detected, and it is possible to prevent a situation in which the train is forced to perform an unnecessary emergency stop due to a mischief during the running of the train and to operate the train stably.

Further, the sliding door device of the present invention,
The drag detection device,
The sliding door,
A structure existing in the closing direction of the sliding door,
It is constituted so that it may be provided.

  Therefore, since an object sandwiched between the sliding doors is provided with a drag detecting device that detects a change caused by being pulled after the sliding door is closed and detects the occurrence of the drag state, suppression of excessive detection of the drag state occurrence, Realization of high-sensitivity detection of the occurrence of a drag state can be achieved.

Preferably,
The rotating body has a cylindrical side surface,
The structure may be configured such that a groove portion that fits with a side surface of the rotating body is formed in a portion of the structure facing the rotating body when the sliding door is closed.

  With this configuration, the rotating body and the opposing portion are in contact with each other on the surface, so that the occurrence of the pinched state or the trailing state can be detected with high accuracy.

Preferably,
The rotating body,
It is configured such that a portion fitted with the groove portion is exposed,
When the sliding door is closed, the exposed portion can be configured to be covered with the facing portion.

  With such a configuration, the rotating body can be hidden by the opposing portion when the sliding door is closed, so that it is possible to prevent passengers or the like from mischieving the rotating body.

  According to the present invention, it is possible to achieve both suppression of excessive detection of the occurrence of a drag state and realization of high-sensitivity detection of the occurrence of a drag state.

It is a figure showing an example of the sliding door device of the present invention. It is a figure showing an example of composition of a sliding door device of a 1st example of reference. It is a block diagram showing an example of composition of a door jam detection device of a 1st example of reference. It is a flowchart which shows an example of the pinch detection processing of a 1st reference example. It is a figure showing an example of composition of a sliding door device of a 2nd example of reference. It is a block diagram showing an example of composition of a door jam detection device of a 2nd example of reference. It is a flow chart which shows an example of the pinch detection processing of a 2nd example of reference. 5 is a flowchart illustrating an example of a drag detection process according to the first embodiment. 9 is a flowchart illustrating a modification of the drag detection process according to the first embodiment. It is a figure showing composition of a modification of a sliding door device.

  With reference to the drawings, embodiments of a drag detection device and a sliding door device according to the present invention, which also function as a door jam detection device, will be described. The embodiments described below have various technically preferable limits for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[First Reference Example]
First, as a first reference example, a case where the sliding detection device functions as the door jam detection device 20 and the sliding door device 1 will be described.

<Sliding door device>
FIG. 1 is a diagram showing an example of the sliding door device 1 of the present invention.
The sliding door device 1 is installed in a railway vehicle, and includes a left railway vehicle door 10L (hereinafter, referred to as a “left door 10L”) and a right railway vehicle door 10R (hereinafter, a “right door 10R”). And a door pinch detection device 20.

The left door 10L and the right door 10R are provided as a pair at one entrance (entrance / exit), and open and close by sliding in opposite directions. For example, the doors 10L and 10R shown in FIG. 1 are in a closed state (hereinafter, referred to as a "door closed state"), but the left door 10L slides to the left and the right door 10R slides to the right. As a result, the doors 10L and 10R are opened (hereinafter, referred to as “door open state”).
That is, in the left door 10L, the left direction is the opening direction, and the right direction is the closing direction. In the right door 10R, the right direction is the opening direction, and the left direction is the closing direction.

FIG. 2 is a diagram showing an example of the configuration of the sliding door device 1 according to the first reference example. FIG. 2A is a front view, and FIGS. 2B and 2C are cross-sectional views.
At the door of the right door 10R, there is provided a rotating body 21 rotatably provided on the door and a rotation detector 22 for detecting the rotation of the rotating body 21, and the left door 10L is provided. Is provided with a rotating body receiving portion 11.
When an object is caught between the doors 10L and 10R, a passenger or the like pulls the object to pull out the object. The rotating body 21 is configured to rotate around a rotation axis X arranged along the door of the right door 10R, and is in contact with the object, so that when the object is pulled, It rotates with it. Therefore, by detecting the rotation of the rotating body 21, it is possible to detect the occurrence of the state of being pinched by the door.

Here, when the door-jam state occurs, the door-jam state is “door-jam state where the passenger is inside the vehicle or the like” or “door-jam state where the passenger is outside the vehicle or the like”. Regardless of this, the passenger or the like senses danger and tries to pull out the pinched object, so that the object is pulled. Therefore, by detecting a change (rotation of the rotating body 21) caused by the pulled object being pulled, it is possible to detect the occurrence of the state of being caught in the door.
Further, since the occurrence of the door-jam state is detected only when the rotating body 21 has rotated, it is possible to suppress the occurrence of the door-jam state from being excessively detected.
In addition, even if the sandwiched object is a thin or thin object, if the object cannot be easily pulled out, when the object is pulled, the rotating body 21 rotates with it, so that the door is sandwiched. Can be detected with high sensitivity (that is, even if the sandwiched object is a thin object or a thin object, the occurrence of a door-jam state can be detected).
Further, as described above, the rotating body 21 is provided rotatably on the one door (the door of the right door 10R in the present embodiment), and the other door (the door of the left door 10L in the present embodiment). By providing the rotating body receiving portion 11 in a fixed state for receiving the rotating body 21 in the front), when a door-jamming state occurs, a passenger or the like can easily pull out the jammed object.
In other words, when the members in the fixed state are in contact with each other at the door tip portion, when the door is pinched, it is necessary to pull out the pinched object while frictional force is generated, so that considerable force is applied. In addition to the necessity, when the sandwiched object is a thin cloth or the like, there is a possibility that the object may be torn when trying to pull it out. In this regard, by using the rotating body 21 on one side as described above, a frictional force is less likely to be generated, and when a passenger or the like pulls the sandwiched object, the rotating body 21 rotates to remove the object that is smoothly sandwiched. It can be pulled out, and the pinched state can be easily eliminated.

The rotating body 21 provided at the door end of the right door 10R includes a roller portion 21a made of hard rubber or the like, and a shaft portion 21b inserted through the axis of the roller portion 21a and rotated integrally with the roller portion 21a. , And is disposed along the door of the right door 10R. That is, the side surface of the rotating body 21 forms a cylindrical surface.
A rotating body protection part 12 for protecting the rotating body 21 is attached to the door of the right door 10R, and a rotating body supporting part 13 for supporting the rotating body 21 is mounted on the rotating body protecting part 12. Installed.

As shown in FIG. 2A, the rotating body support portion 13 is formed in a substantially U-shape when viewed from the height direction (up and down direction) of the doors 10L and 10R. Specifically, the rotating body support portion 13 includes a holding portion 13a for holding the rotating body 21 from above and below, and a connecting portion 13b for connecting the upper and lower holding portions 13a.
A hole for inserting the shaft portion 21b of the rotating body 21 is provided in the lower holding portion 13a of the upper and lower holding portions 13a, and the lower holding portion 13a pivotally supports the rotating body 21. are doing.
A rotation detector 22 is attached to the upper holding part 13a of the upper and lower holding parts 13a, and the upper holding part 13a supports the rotating body 21 via the rotation detector 22. ing.

As shown in FIG. 2B, the rotating body protection portion 12 is formed in a substantially U-shape when viewed from the thickness direction of the doors 10L and 10R, and has a connection portion of the rotating body support portion 13 on its inner surface. 13b is joined.
The rotating body 21 is accommodated in the rotating body protection section 12 in a state where the rotating body 21 is rotatably supported by the rotating body supporting section 13 and a part of the side surface of the rotating body 21 is exposed.
In addition, the shape and size of the rotating body protection unit 12 are not limited to the illustrated example. For example, the rotating body protection portion 12 may extend further toward the contact side end of the rotating body 21 with the rotating body receiving portion 11 than in the illustrated example. If the rotating body protection portion 12 extends toward the end of the rotating body 21 on the contact side with the rotating body receiving portion 11, there is a risk that a passenger or the like carelessly touches or mischiefs the rotating body 21. Can be reduced.

The rotation detector 22 provided at the front end of the right door 10R is a rotary encoder, and is fixed to the upper holding portion 13a of the rotating body support portion 13 with the input shaft 22a facing downward. The input shaft 22a is connected to the shaft portion 21b of the rotating body 21, and when the rotating body 21 rotates, the input shaft 22a also rotates. That is, the rotation detector 22 forms a rotation detecting unit that detects the rotation of the rotating body 21.
Note that the rotation detector 22 is not limited to the rotary encoder, and can be appropriately changed as long as the rotation of the rotating body 21 can be detected.

  The rotating body receiving portion 11 provided at the door of the left door 10L is made of hard rubber or the like, and is disposed along the door. The rotating body receiving portion 11 has a groove 11a that fits into a side surface of the rotating body 21 (specifically, an exposed portion of the side surface of the rotating body 21 that is exposed from the rotating body protecting portion 12) when the door is closed. Are formed along the door. Therefore, as shown in FIG. 2C, the rotating body 21 and the rotating body receiving portion 11 are in surface contact with each other when the door is closed.

In addition, the rotating body receiving portion 11 is formed so as not to be curved toward the partner side but to be curved toward the partner side similarly to the door rubber of an existing railway vehicle door. Although it is possible to configure the rotating body 21 and the rotating body receiving portion 11 to be in contact with each other with a line, from the viewpoint of detecting occurrence of a door-jam state with high accuracy, the rotating body 21 and the rotating body receiving portion 11 Are preferably configured to be in contact with each other.
That is, when the rotating body 21 and the rotating body receiving portion 11 are in contact with each other on a surface, the contact area between the rotating body 21 and the object sandwiched between the doors 10L and 10R is larger than when the rotating body 21 is in contact with the line. As the contact area between the sandwiched object and the rotating body 21 is larger, the pulling force of the object is more efficiently transmitted to the rotating body 21. Therefore, when the rotating body 21 and the rotating body receiving portion 11 are in contact with each other with a line, It is possible to detect the occurrence of the pinched state with higher accuracy than in the case of contact.

  Further, when the door 11 is in the closed state, the groove 11a of the rotating body receiving portion 11 has the exposed portion on the side surface of the rotating body 21 fitted into the groove 11a and the rotating body receiving portion 11 is fitted into the groove 11a, as shown in FIG. It is configured to be covered. Thereby, in the door closed state, the rotating body 21 can be hidden by the rotating body receiving portion 11, so that mischief of the rotating body 21 by a passenger or the like can be prevented.

<Door pinch detection device>
FIG. 3 is a block diagram illustrating an example of a configuration of the door jam detector 20 according to the first reference example.
The door pinch detection device 20 includes a rotating body 21, a rotation detector 22, a door interval acquisition unit 23, and a control unit 24. The rotation detector 22 outputs a detection signal to the control unit 24 when the rotation of the rotating body 21 is detected.

  The door interval acquisition unit 23 acquires door interval information relating to the distance between the left door 10L and the right door 10R, that is, the door interval D (see FIG. 2A), and outputs the information to the control unit 24. The door interval acquisition unit 23 may acquire the door interval information by measuring the door interval D using, for example, light waves or ultrasonic waves, or may be a motor that opens and closes the doors 10L and 10R. The door interval information may be obtained by calculating the door interval D based on the number of revolutions or the like.

  The control unit 24 is, for example, a computer including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Various data and programs are stored in the ROM. The CPU reads the designated program from the ROM and develops the program on the RAM, and the control unit 24 performs various processes in cooperation with the developed program and the CPU.

Specifically, the control unit 24 performs a door jam detection process and the like.
FIG. 4 is a flowchart illustrating an example of the door jam detection process according to the first reference example. The control unit 24 executes the door jam detection process when the “door close switch” operated to close the doors 10L and 10R is pressed.

The control unit 24 first determines whether or not the door interval D has become equal to or less than a certain value (for example, 2 cm) based on the door interval information from the door interval acquisition unit 23 (Step S1).
If it is determined in step S1 that the door interval D is not less than the predetermined value (step S1; No), the process of step S1 is repeated.
On the other hand, when it is determined in step S1 that the door interval D has become equal to or smaller than the predetermined value (step S1; Yes), the rotation detector 22 is enabled (step S2).

Next, the control unit 24 determines whether the rotation detector 22 detects the rotation of the rotating body 21 (Step S3).
If it is determined in step S3 that the rotation detector 22 has detected the rotation of the rotation body 21 (step S3; Yes), that is, if the detection signal from the rotation detector 22 has been received, Is determined, and a door restart door command signal is output (step S4). As a result, the doors 10L and 10R reopen, and the process returns to step S1.
That is, when the control unit 24 receives a detection signal from the rotation detection unit (the rotation detector 22), the control unit 24 forms a door-jam state determination unit that determines that the door-jam state has occurred.

On the other hand, when it is determined in step S3 that the rotation detector 22 has not detected the rotation of the rotation body 21 (step S3; No), that is, when the detection signal from the rotation detector 22 has not been received Then, it is determined whether or not the door has been closed (step S5).
Note that whether or not the door is closed can be determined based on the door interval information from the door interval obtaining unit 23, or an existing sensor (for detecting that the door has been closed) can be determined. It is also possible to make the determination based on the detection signal from the sensor.

If it is determined in step S5 that the door is not closed (step S5; No), the process returns to step S3. Here, after the "door close switch" is depressed, the door motor continues to rotate to move the doors 10L and 10R in the closing direction until the door is closed. If the load on the door exceeds the specified value, a door restart door command signal is output, and the doors 10L and 10R restart the door. In this case, the process returns to step S1.
On the other hand, when it is determined in step S5 that the door is in the closed state (step S5; Yes), it is determined whether or not the rotation detector 22 detects the rotation of the rotating body 21 (step S6).
Here, the doors 10L and 10R are provided with a play between the doors 10L and 10R, similarly to the existing railcar doors, and are designed so that they do not contact each other even when the doors are closed. . Therefore, depending on an object sandwiched between the doors 10L and 10R, the door may be closed while the door sandwiching state occurs. Therefore, even after it is determined that the door is in the closed state, it is possible to reliably detect the occurrence of the door-jamming state by determining whether or not the rotation of the rotating body 21 has been detected for a certain period of time. .

If it is determined in step S6 that the rotation detector 22 has detected the rotation of the rotation body 21 (step S6; Yes), that is, if the detection signal from the rotation detector 22 has been received, Is determined to have occurred, a door restart door command signal is output (step S4), and the process returns to step S1.
On the other hand, when it is determined in step S6 that the rotation detector 22 has not detected the rotation of the rotation body 21 (step S6; No), that is, when the detection signal from the rotation detector 22 has not been received In step S7, it is determined whether a predetermined time (for example, two seconds) has elapsed since the door was closed (step S7).

If it is determined in step S7 that the fixed time has not elapsed since the door was closed (step S7; No), the process returns to step S6.
On the other hand, if it is determined in step S7 that a predetermined time has elapsed since the door was closed (step S7; Yes), the rotation detector 22 is invalidated (step S8), and a departure permission signal is output. (Step S9). As a result, the "side lamp" installed on the exterior of the railway vehicle is switched from the on state to the off state, and the "pilot lamp" installed in the train cab is switched from the off state to the on state.

  According to the door pinch detection device 20 of the first reference example described above, the door pinch detection device detects the occurrence of a door pinch state when the sliding door (right door 10R) closes, and rotates around the door end of the sliding door. A freely rotating body 21, a rotation detecting means (rotation detector 22) for detecting the rotation of the rotating body 21, and a state where the door is pinched when a detection signal is received from the rotation detecting means. The rotation body 21 is configured to rotate around a rotation axis X arranged along the door tip.

Therefore, an object sandwiched between the doors 10L and 10R does not detect the force of pushing the doors 10L and 10R in the opening direction to detect the occurrence of the door-jamming state. Since the occurrence of the door-jamming state is detected by detecting a change (rotation of the rotating body 21) due to being pulled, the detection of the excessive state of the door-jam state is suppressed, and the high-sensitivity detection of the door-jam state is realized. And can be compatible.
That is, by detecting a change (rotation of the rotating body 21) caused by the pulled object being pulled, it is possible to detect the occurrence of the door-jamming state.
Further, since the occurrence of the door-jam state is detected only when the rotating body 21 has rotated, it is possible to suppress the occurrence of the door-jam state from being excessively detected.
In addition, even if the sandwiched object is a thin or thin object, if the object cannot be easily pulled out, when the object is pulled, the rotating body 21 rotates with it, so that the door is sandwiched. Can be detected with high sensitivity.

  According to the sliding door device 1 of the first embodiment described above, the sliding door device 1 includes the door pinching detection device 20, the sliding door (the right door 10R), and the structure (the left door 10L) existing in the closing direction of the sliding door. It is configured.

  Therefore, since the apparatus includes the door-jam detecting device 20 that detects a change (rotation of the rotating body 21) due to the pulling of an object sandwiched between the doors 10L and 10R and detects the occurrence of the door-jam state. In addition, it is possible to achieve both suppression of excessive detection of occurrence of a pinching state and realization of high-sensitivity detection of occurrence of a pinching state.

  Further, according to the sliding door device 1 of the first reference example, the rotating body 21 has a cylindrical surface on the side surface, and an opposing portion (the rotating body receiving portion 11) facing the rotating body 21 of the structure (the left door 10L). Can be configured such that a groove 11a that fits into the side surface of the rotating body 21 is formed when the sliding door is closed (door closed state).

  With this configuration, since the rotating body 21 and the facing portion (the rotating body receiving portion 11) are in contact with each other on the surface, it is possible to detect the occurrence of the state of being caught in the door with high accuracy.

  In addition, according to the sliding door device 1 of the first reference example, the rotating body 21 is configured such that the portion that fits into the groove 11a is exposed, and the exposed portion faces the facing portion when the sliding door is closed (door closed state). (Rotating body receiving portion 11).

  With this configuration, the rotating body 21 can be hidden by the opposing portion (the rotating body receiving portion 11) in a state where the sliding door is closed (the door closed state), so that mischief of the rotating body 21 by a passenger or the like is prevented. be able to.

[Second Reference Example]
Next, the door jam detector 20 and the sliding door device 1 of the second reference example will be described.
The door pinch detection device 20 and the sliding door device 1 of the second reference example are different from the first embodiment in that the door pinch detection device 20 and the sliding door device 1 detect the sliding movement of the rotation member 21 in addition to the rotation of the rotation member 21. Different from the device 1. Therefore, the description of the parts having the same configuration as that of the first reference example will be omitted below, and mainly different parts will be described.

FIG. 5 is a diagram showing an example of the configuration of the sliding door device 1 of the second reference example, where FIG. 5A is a front view, and FIGS. 5B and 5C are cross-sectional views.
The left door 10L of the second reference example has the same configuration as the left door 10L of the first reference example.

The right door 10R of the second reference example differs from the right door 10R of the first reference example in that the rotating body 21 is slidable in the opening direction (right direction) of the right door 10R.
Specifically, in the second reference example, the rotating body support unit 13 protects the rotating body through a biasing member 14 that biases the rotating body support unit 13 in the closing direction (left direction) of the right door 10R. It is attached to the unit 12. Accordingly, when a force opposing the urging force of the urging member 14 acts on the rotating body 21 supported by the rotating body support 13, the rotating body support 13 rotates as shown in FIG. Along with the moving body 21, it slides in the opening direction (right direction) of the right door 10R.
Here, the right door 10R is provided with a guide portion (not shown) for guiding the sliding movement of the rotating body support portion 13, and a force against the urging force of the urging member 14 is applied to the rotating body 21. Even if it does not act uniformly, the rotating body 21 and the rotating body support portion 13 are configured to move in parallel in the opening direction (right direction) of the right door 10R.

Further, the right door 10R of the second reference example is different from the right door 10R of the first reference example in that the right door 10R includes a slide movement detector 25 that detects the slide movement of the rotating body 21.
In this embodiment, as the slide movement detector 25, a contact-type displacement meter that measures the amount of displacement of the rotating body supporting portion 13 that supports the rotating body 21 is used. The present invention is not limited thereto, and may be appropriately changed as long as the sliding movement of the rotating body 21 can be detected.

FIG. 6 is a block diagram illustrating an example of a configuration of the door pinch detection device 20 according to the second reference example.
The door pinch detection device 20 of the second reference example is different from the door pinch detection device 20 of the first reference example in that a slide movement detector 25 is provided. The slide movement detector 25 outputs a detection signal to the control unit 24 when the slide movement of the rotating body 21 is detected.

  FIG. 7 is a flowchart illustrating an example of the door jam detection process according to the second reference example. The control unit 24 executes the door jam detection process when the “door close switch” operated to close the doors 10L and 10R is pressed.

The control unit 24 first determines whether or not the door interval D has become equal to or less than a certain value (for example, 2 cm) based on the door interval information from the door interval acquisition unit 23 (Step S1).
If it is determined in step S1 that the door interval D is not less than the predetermined value (step S1; No), the process of step S1 is repeated.
On the other hand, when it is determined in step S1 that the door interval D has become equal to or smaller than the predetermined value (step S1; Yes), the slide movement detector 25 is enabled (step S11).

Next, the control unit 24 determines whether the slide movement detector 25 has detected the slide movement of the rotating body 21 (Step S12).
In step S12, when it is determined that the slide movement detector 25 has detected the slide movement of the rotating body 21 (step S12; Yes), that is, when the detection signal from the slide movement detector 25 is received, Is determined to have occurred, a door restart door command signal is output (step S4), and the process returns to step S1.
On the other hand, when it is determined in step S12 that the slide movement detector 25 has not detected the slide movement of the rotating body 21 (step S12; No), that is, when the detection signal from the slide movement detector 25 has not been received Then, it is determined whether or not the door has been closed (step S5).

If it is determined in step S5 that the door is not closed (step S5; No), the process returns to step S12.
On the other hand, if it is determined in step S5 that the door has been closed (step S5; Yes), the slide movement detector 25 is invalidated (step S13).
That is, when the control unit 24 receives a detection signal from the slide movement detection means (slide movement detector 25) before the sliding door is closed (the door closed state), the control unit 24 determines that the door jam state has occurred. It is configured to be.

Next, the control unit 24 enables the rotation detector 22 (Step S2), and determines whether or not the rotation detector 22 detects the rotation of the rotating body 21 (Step S6).
If it is determined in step S6 that the rotation detector 22 has detected the rotation of the rotation body 21 (step S6; Yes), that is, if the detection signal from the rotation detector 22 has been received, Is determined to have occurred, a door restart door command signal is output (step S4), and the process returns to step S1.
On the other hand, when it is determined in step S6 that the rotation detector 22 has not detected the rotation of the rotation body 21 (step S6; No), that is, when the detection signal from the rotation detector 22 has not been received In step S7, it is determined whether a predetermined time (for example, two seconds) has elapsed since the door was closed (step S7).

If it is determined in step S7 that the fixed time has not elapsed since the door was closed (step S7; No), the process returns to step S6.
On the other hand, if it is determined in step S7 that a predetermined time has elapsed since the door was closed (step S7; Yes), the rotation detector 22 is invalidated (step S8), and a departure permission signal is output. (Step S9).

  According to the door sandwiching detection device 20 of the second reference example described above, the rotating body 21 is slidable in the opening direction of the sliding door (the right door 10R), and slide movement detection for detecting the sliding movement of the rotating body 21 is performed. Means (slide movement detector 25), and the door sandwiching state determination means (control unit 24) receives the detection signal from the slide movement detection means before the sliding door is closed (door closed state). , It is configured to determine that the door-jamming state has occurred.

Therefore, before the door is closed, the object caught between the doors 10L and 10R detects the force of pushing the doors 10L and 10R in the opening direction to detect the occurrence of the door entrapment state. Various accidents can be avoided while suppressing excessive detection.
If the rotating body 21 slides before the door is closed and the door is closed, if the doors 10L and 10R are forcibly moved in the closing direction to keep the door closed, the caught object is damaged. Accidents may occur. That is, a door-jam state in which the rotating body 21 slides before the door is closed has a high possibility of causing an accident such as injury or breakage. If a pinching state occurs in which the rotating body 21 slides after the door is closed, there is a high possibility that the sandwiched object is pulled, and if the sandwiched object is pulled, the rotating body is pulled. Since the rotation of 21 is detected, it is not missed.
Accordingly, in addition to detecting a change (rotation of the rotating body 21) due to the pulling of the object sandwiched between the doors 10L and 10R to detect the occurrence of the door-jam state, the door is closed. By detecting the force of an object previously sandwiched between the doors 10L and 10R to push the doors 10L and 10R in the opening direction and detecting the occurrence of the door-jam state, it is possible to detect the occurrence of the door-jam state excessively. It is possible to avoid not only dragging accidents and contact accidents but also accidents such as injuries and breakage while preventing such accidents.

[First Embodiment]
Next, the drag detection device and the sliding door device 1 according to the first embodiment will be described.
The drag detection device according to the first embodiment causes the door pinch detection device 20 (see FIG. 3) of the first reference example to function as a drag detection device.
The drag detection device and the sliding door device 1 of the first embodiment have the same configuration as that of the first reference example, and differ only in the control configuration by the control unit 24 (see FIG. 3).
Therefore, the description of the parts having the same configuration as that of the first reference example will be omitted below, and mainly different parts will be described.

The drag detection device includes a drag state determination unit that determines that a drag state has occurred when a detection signal is received from the rotation detection unit (rotation detector 22) after the sliding door is closed. In the embodiment, the control unit 24 (see FIG. 3) functions as the drag state determination unit.
FIG. 8 is a flowchart illustrating an example of the drag detection process according to the first embodiment. The control unit 24 executes the drag detection process when a “door close switch” operated to close the doors 10L and 10R is pressed.

Note that the processing from step S1 to step S7 in FIG. 8 is the same as that described in step S1 to step S7 (see FIG. 4) in the first reference example, and thus the same step numbers as in FIG. The description is omitted.
In the present embodiment, if it is determined in step S7 that a predetermined time has elapsed since the door was closed (step S7; Yes), the control unit 24 outputs a departure permission signal (step S9). . As a result, the "side lamp" installed on the exterior of the railway vehicle is switched from the on state to the off state, and the "pilot lamp" installed in the train cab is switched from the off state to the on state.

When the departure permission signal is output, the control unit 24 determines whether or not the rotation detector 22 has detected the rotation of the rotating body 21 (Step S21).
If it is determined in step S21 that the rotation detector 22 has detected the rotation of the rotating body 21 (step S21; Yes), that is, if the detection signal from the rotation detector 22 has been received, the control unit 24 Determines that a drag state or the like has occurred.
That is, in this case, it means that a state in which the rotation of the rotating body 21 is detected after the train has departed has occurred. Specifically, for example, the luggage of passengers who got off the platform is caught in the train door and trying to pull it out, or the passenger is dragged by the train that left with the luggage etc. May have occurred.
Therefore, when it is determined that a dragging state or the like has occurred, the control unit 24 outputs a signal for notifying the crew of the state (step S22), and ends the dragging detection process. In this case, procedures such as emergency stop of the train are performed by a crew member or the like who has been notified.

On the other hand, when it is determined in step S21 that the rotation detector 22 has not detected the rotation of the rotation body 21 (step S21; No), that is, when the detection signal from the rotation detector 22 has not been received Then, it is determined whether or not a fixed time (for example, 10 seconds) has elapsed from the output of the departure permission signal (see step S9) (step S23).
Even if the train starts with the passenger's luggage or the like sandwiched between the doors, it is conceivable that the passenger with the luggage or the like runs in parallel with the train for about 10 seconds after the train departs. While the passengers are running in parallel, the rotating body 21 does not rotate much because the force to pull out the sandwiched object is not so large, and the rotation may not be detected. On the other hand, if the passengers cannot drag in parallel with the train after about 10 seconds and become dragged, a large force is applied to the door between which the luggage or the like is sandwiched, and the rotating body 21 is large enough to be detected. Rotate. In consideration of such a process, in the present embodiment, the control unit 24 continues to determine whether or not the rotation detector 22 has detected the rotation of the rotating body 21 for about 10 seconds from the output of the departure permission signal. It is supposed to.
Note that the “constant time” is not limited to 10 seconds and is appropriately set according to the specifications of the product.
If the "constant time" is lengthened, the drag state can be detected for a longer time.However, if the drag state continues for a long time, station staff or other staff members can drag without relying on the detection by the drag detection device. It is believed that you notice the condition. On the other hand, in a state where the rotation detector 22 is enabled, a detection signal from the rotation detector 22 is output due to mischief of a passenger or the like, and there is a possibility that operation of the train may be hindered due to unnecessary emergency stop or the like. . For this reason, the “constant time” is appropriately set in consideration of the above situation.

If it is determined in step S23 that the fixed time has not elapsed since the output of the departure permission signal (step S23; No), the process returns to step S21.
On the other hand, when it is determined in step S23 that a predetermined time has elapsed from the output of the departure permission signal (step S23; Yes), the control unit 24 invalidates the rotation detector 22 (step S24) and performs drag detection. The process ends.
By invalidating the rotation detector 22 after a lapse of a certain time from the output of the departure permission signal, the dragging state and the like can be appropriately detected, and unnecessary emergency stop of the train due to mischief while the train is running can be performed. Prevents forced operation and stable train operation.

Note that the elapse of the predetermined time determined in step S23 is not limited to the starting of the output of the departure permission signal.
For example, after the output of the departure permission signal, the elapse of a certain period of time may be determined starting from the time when the train motor or the like actually starts driving.

  According to the above-described drag detection device (the door-jam detection device 20) of the first embodiment, it is a drag detection device that detects the occurrence of a drag state after the sliding door (the right door 10R) is closed. , A rotation detector (rotation detector 22) for detecting the rotation of the rotation body 21, and a drag when receiving a detection signal from the rotation detector. A drag state determination unit (control unit 24) for determining that a state has occurred, and the rotating body 21 is configured to rotate about a rotation axis X arranged along the door tip. .

Therefore, an object sandwiched between the doors 10L and 10R does not detect the force of pushing the doors 10L and 10R in the opening direction to detect the occurrence of the door-jamming state. Since the change (rotation of the rotating body 21) due to being pulled after the sliding door (the right door 10R) is closed is detected to detect the occurrence of the drag state, the excessive detection of the occurrence of the drag state is suppressed, and the drag state is detected. Realization of high-sensitivity detection of occurrence can be achieved.
That is, it is possible to detect the occurrence of the drag state by detecting a change (rotation of the rotating body 21) caused by the pulled object being pulled.
Further, since the occurrence of the drag state is detected only when the rotating body 21 rotates, it is possible to suppress the occurrence of the drag state from being excessively detected.
Further, even if the sandwiched object is a thin or thin object, if the object cannot be easily pulled out, when the object is pulled, the rotating body 21 rotates along with the object, so that the dragging state is not satisfied. Occurrence can be detected with high sensitivity.

In the first embodiment, the case where the door pinch detection device 20 having the configuration shown in the first reference example functions as a drag detection device is exemplified. However, the door pinch detection device 20 functioning as a drag detection device is not limited to this. Not limited.
For example, as shown in the second reference example, in addition to the rotation of the rotating body 21, the door pinch detection device 20 (see FIG. 6) that detects the sliding movement of the rotating body 21 may function as a drag detection device. Good.
In this case, as shown in FIG. 9, after detecting the sliding movement of the rotating body 21, the rotation of the rotating body 21 is detected.
Note that the processes from step S1 to step S7 in FIG. 9 are the same as those described as steps S1 to S7 (see FIG. 7) in the second reference example, and thus the same step numbers as in FIG. The description is omitted.
Further, since the processing from step S9 to step S24 in FIG. 9 is the same as that described in step S9 to step S24 (see FIG. 8) in the first embodiment, the same step numbers as those in FIG. The description is omitted.

In addition to the rotation of the rotating body 21, even when the door pinch detection device 20 in the second reference example that detects the sliding movement of the rotating body 21 functions as a drag detection device, the same as described in the first embodiment. Similarly, a change (rotation of the rotating body 21) caused by an object sandwiched between the doors 10L and 10R being pulled after the sliding door (the right door 10R) is closed is detected to detect the occurrence of a drag state. Therefore, both suppression of excessive detection of the occurrence of a drag state and realization of high-sensitivity detection of the occurrence of a drag state can be achieved.
That is, since the occurrence of the drag state is detected only when the rotating body 21 has rotated, it is possible to suppress an excessive detection of the occurrence of the drag state.
Further, even if the sandwiched object is a thin or thin object, the rotating body 21 rotates when the object is pulled, so that the occurrence of a drag state can be detected with high sensitivity.

Further, when the control unit 24 as the drag state determination unit of the present embodiment determines that the drag state has occurred, it is configured to output a signal notifying the state.
For this reason, it is possible to promptly notify the crew of the occurrence of the drag state, and to take appropriate measures to prevent an accident such as emergency stop of the train.

In addition, the control unit 24 as the drag state determination unit of the present embodiment invalidates the rotation detection unit (the rotation detector 22) when a predetermined time has elapsed from the door closed state.
For this reason, the dragging state and the like can be appropriately detected, and a situation in which the train is forced to stop unnecessarily in an emergency due to mischief while the train is running can be prevented, and the train can be operated stably.

  Further, as described in the first reference example, according to the sliding door device 1 including the drag detection device of the present embodiment, the rotating body 21 has a cylindrical side surface, and the rotating body 21 of the structure (the left door 10L). A groove 11a that fits into the side surface of the rotating body 21 in a state where the sliding door is closed (door closed state) is formed in an opposing portion (the rotating body receiving portion 11) that faces the rotating body 21. It is possible.

  With this configuration, since the rotating body 21 and the opposing portion (the rotating body receiving portion 11) are in surface contact with each other, the occurrence of a drag state can be detected with high accuracy.

  Further, as described in the first reference example, according to the sliding door device 1 including the drag detection device of the present embodiment, the rotating body 21 is configured such that a portion that fits into the groove 11a is exposed, and the sliding door is closed. In the closed state (door closed state), the exposed portion can be configured to be covered with the opposing portion (the rotating body receiving portion 11).

  With this configuration, the rotating body 21 can be hidden by the opposing portion (the rotating body receiving portion 11) in a state where the sliding door is closed (door closed state), so that mischief of the rotating body 21 by a passenger or the like is prevented. A situation in which an unnecessary emergency stop or the like occurs can be prevented.

  It should be understood that the embodiments disclosed this time are illustrative in all aspects and not restrictive. Further, the configurations of the above-described embodiments may be combined and applied. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

Specifically, in the first reference example, the second reference example, and the first embodiment, the structure and the like of the rotating body 21 are not limited to those described above, and can be appropriately changed.
In the first reference example, the second reference example, and the first embodiment, the structure, arrangement position, number, and the like of the rotation detectors 22 are not limited to those described above, and can be appropriately changed.
Further, in the first reference example, the second reference example, and the first embodiment, the rotating body 21 and the rotation detector 22 may be provided on the left door 10L, and the rotating body receiving portion 11 may be provided on the right door 10R. That is, the left door 10L may be a sliding door and the right door 10R may be a structure.
Further, in the second reference example and the first embodiment, the structure, arrangement position, number, and the like of the slide mechanism of the rotating body 21 and the slide movement detector 25 are not limited to those described above, and can be appropriately changed.

Further, in the first and second reference examples, the case where the rotating body receiving portion 11 is a solid member is illustrated, but the configuration of the rotating body receiving portion 11 is not limited to this.
For example, as shown in FIG. 10A and FIG. 10B, in a portion near the contact side with the rotating body 21 inside the rotating body receiving portion 15 and in a longitudinal direction of the rotating body receiving portion 15. A hollow portion 15b may be provided along.
By providing the hollow portion 15b inside the rotary body receiving portion 15, when the rotary body 21 comes into contact with the groove 15a of the rotary body receiving portion 15, the air layer in the hollow portion 15b is deformed (FIG. 10B )) To provide a cushion. For this reason, even if the material forming the rotating body receiving portion 15 is the same, the rotating body receiving portion 15 can be more flexibly and closely contacted with the rotating body 21 as compared with the case where the hollow portion 15b is not provided. The rotation of the moving body 21 can be detected with higher accuracy.
By providing the rotating body receiving portion 15 with flexibility as described above, it is possible to more smoothly pull out the object sandwiched by the door tip when the door sandwiching state occurs.
The shape and size of the cavity 15b are not limited to the illustrated example.
The larger the hollow portion 15b, the more the flexibility of the rotating body receiving portion 15 can be improved, but on the other hand, it is easy to flip up the rotating body receiving portion 15, so that there is a risk of mischief of the rotating body 21 by a passenger or the like. Increase.
For this reason, it is preferable to appropriately determine the shape and size of the hollow portion 15b in accordance with the degree of flexibility required for the rotating body receiving portion 15 according to the specifications of the product.

Further, in the first and second reference examples, the case where the groove 11a is provided in the rotating body receiving portion 11 is illustrated, but it is not essential that the groove 11a is provided in the rotating body receiving portion 11.
For example, as shown in FIGS. 10 (c) and 10 (d), the rotating body receiving portion 16 is formed so as to be convexly curved toward the other side, similarly to the door rubber of an existing railway vehicle door. A hollow portion 16 a may be provided inside the rotating body receiving portion 16 near the contact side with the rotating body 21 along the longitudinal direction of the rotating body receiving portion 16.
In this case, even if the shape of the rotating body receiving portion 16 on the contact side with the rotating body 21 is convex, when the rotating body 21 contacts the rotating body receiving portion 15, the hollow portion 16a is Due to the deformation of the air layer (see FIG. 10D), the contact side of the rotating body receiving portion 16 with the rotating body 21 is crushed. Thereby, the contact side of the rotating body receiving portion 16 with the rotating body 21 becomes concave along the surface shape of the rotating body 21, and the rotating body 21 and the rotating body receiving portion 16 can be brought into surface contact.
Also in this case, the shape and size of the cavity 16a are not limited to the illustrated example.
The larger the hollow portion 16a is, the more the flexibility of the rotating body receiving portion 16 and the deformability when the rotating body 21 abuts can be improved, so that it becomes easier to pull out the object sandwiched between the doors, but on the other hand, As described above, the risk of mischief by the passenger or the like with respect to the rotating body 21 increases.
For this reason, it is preferable to appropriately determine the shape and size of the hollow portion 16a in accordance with the degree of flexibility and deformation required of the rotating body receiving portion 16 according to the specifications of the product.

The configuration for providing the rotating body receiving portion 15 with flexibility is not limited to the configuration in which the hollow portions 15b and 16a are provided inside as described above, and a soft resin is used as a material for forming the rotating body receiving portion 15. Such adjustment may be performed by adjusting the material.
Further, by combining the adjustment of the material and the formation of the cavities 15b and 16a, the flexibility of the rotating body receiving portion 15 may be more finely adjusted and optimized.

Further, the sliding door device 1 is not limited to the one provided with the double-door sliding door, and may be provided with a single-door sliding door. In this case, the door stop member forms a structure that exists in the closing direction of the sliding door.
Further, the door pinch detection device 20 and the drag detection device are not limited to those that detect the occurrence of a door pinch state when the double-sided sliding door is closed, and that detect the occurrence of the drag state after the double-sided sliding door is closed, It may detect the occurrence of a pinched state when the one-sided sliding door is closed, or may detect the occurrence of a dragging state after the one-sided sliding door is closed.

In addition, the sliding door device 1 is not limited to one installed in a railway vehicle, and may be installed in, for example, a platform door device, an elevator device, an automatic door device, or the like.
In addition, the door pinch detection device 20 and the drag detection device are limited to those that detect the occurrence of a door pinch state when the railway vehicle door closes or detect the occurrence of a drag state after the railway vehicle door closes. For example, when a movable portion (door portion) of a platform door device, an elevator device, an automatic door device, or the like is closed, the occurrence of a door-jamming state is detected, or after the movable portion (door portion) is closed, a dragging state occurs. May be detected.

1 Sliding door device 10R Right door (sliding door)
10L Left door (structure)
11 Rotating body receiving part (opposite part)
11a Groove 20 Door pinch detection device (dragging detection device)
21 rotating body 22 rotation detector (rotation detecting means)
24 control section (door sandwiching state determining means, drag state determining means)
25 Slide movement detector (Slide movement detection means)
X rotation axis

Claims (5)

A drag detection device that detects the occurrence of a drag state after a sliding door is closed,
A rotating body rotatably provided at the tip of the sliding door,
Rotation detection means for detecting the rotation of the rotating body,
When a detection signal is received from the rotation detection unit, a drag state determination unit that determines that the drag state has occurred,
With
The rotating body is rotated around a rotation axis arranged along the door tip, is slidable in the opening direction of the sliding door,
A sliding movement detecting unit that detects the sliding movement of the rotating body,
The drag detection device, wherein the drag state determination means determines that the drag state has occurred when receiving a detection signal from the slide movement detection means after the sliding door has been closed.   2. The drag detection device according to claim 1, wherein the drag state determination unit invalidates the rotation detection unit when a predetermined time has elapsed since the door was closed. 3. A drag detection device according to claim 1 or 2,
The sliding door,
A structure existing in the closing direction of the sliding door,
A sliding door device comprising: The rotating body has a cylindrical side surface,
The sliding door device according to claim 3, wherein a groove portion that fits with a side surface of the rotating body when the sliding door is closed is formed in a portion of the structure facing the rotating body. . The rotating body,
It is configured such that a portion fitted with the groove portion is exposed,
5. The sliding door device according to claim 4, wherein the exposed portion is covered by the facing portion when the sliding door is closed. 6.

Images