Door operating equipment

Abstract

To provide a door operating equipment capable of suppressing an increase in size in a direction orthogonal to a moving direction of an engagement member of a regulation part while suppressing an increase in the number of components.SOLUTION: The door operating equipment 100 includes a drive device 30 for opening and closing the door body 201, and a restriction portion 10 for restricting movement of the door body 201 from a closed state to an opened state, wherein the restriction portion 10 includes a pin 21a for restricting movement of the door body 201 in an opening direction by engaging with an engagement opening 1a fixed to the door body 201 in the closed state of the door body 201, and a solenoid unit 1 disposed coaxially with the pin 1a for moving the pin 1a in a direction away from an engagement position with the engagement opening 21a when releasing an engagement state between the pin 1a and the engagement opening 21a.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a door closing device, and more particularly to a door closing device provided with a restricting portion that restricts movement of a door body in an opening direction. [Background technology]

[0002] BACKGROUND ART Conventionally, a sliding door device (door closing device) provided with a locking mechanism that restricts movement of a door body in the opening direction is known (see, for example, Patent Document 1).

[0003] The sliding door device described in Patent Document 1 has a sliding door that suspends a door body installed at the entrance / exit point of a train and moves horizontally. The sliding door device also has a locking mechanism that locks the sliding door and keeps it closed. The locking mechanism includes a latch bar that is configured to slide vertically. The latch bar is configured to move in and out of a latch hole installed in the moving body, and when inserted into the latch hole, it engages with the moving body, thereby locking the sliding door. A latch plate is fixed to the head of the latch bar.

[0004] Furthermore, the sliding door device described in Patent Document 1 above is provided with an electromagnetic solenoid aligned horizontally to the latch bar. The electromagnetic solenoid is configured so that a plunger moves upward when a current is passed through it. The upwardly moved plunger then contacts and presses against the latch plate, thereby lifting the latch bar via the latch plate. That is, in the sliding door device described above, the plunger of the electromagnetic solenoid aligned horizontally to the latch bar moves upward and lifts the latch bar via the latch plate, thereby disengaging the latch bar from the latch hole. This disengages the latch bar from the latch hole, and the sliding door opens. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-237569 Summary of the Invention [Problem to be solved by the invention]

[0006] As described above, in the sliding door device of Patent Document 1, the plungers of the electromagnetic solenoids aligned in a direction perpendicular to the movement direction of the latch bar (horizontal direction) move upward and lift the latch bar via the latch plate, thereby disengaging the latch bar from the latch hole and opening the door. However, in the sliding door device (door closing device) of Patent Document 1, the latch bar (engaging member) is moved using plungers provided separately from the latch bar at positions aligned in a direction perpendicular to the movement direction of the latch bar (horizontal direction), which increases the number of components of the locking mechanism (regulating unit) and increases the size of the restricting unit. Therefore, there is a need for a door closing device that can prevent an increase in the number of components while suppressing an increase in the size of the restricting unit in the direction perpendicular to the movement direction of the latch bar.

[0007] This invention has been made to solve the above-mentioned problems, and one object of this invention is to provide a door closing device that can suppress an increase in size in a direction perpendicular to the movement direction of the engaging member of the regulating portion while suppressing an increase in the number of components. [Means for solving the problem]

[0008] A door opening / closing device according to one aspect of the present invention comprises a drive source for opening and closing a door body, and a regulating unit that regulates the movement of the door body from a closed state to an open state. The regulating unit includes an engaging member that, when the door body is in a closed state, regulates the movement of the door body in the opening direction by engaging with a door body fixing unit fixed to the door body, and an engaging member driving unit that is arranged coaxially with the engaging member and moves the engaging member in a direction away from its engagement position with the door body fixing unit when the engaging member is released from the engagement state with the door body fixing unit.

[0009] In a door opening / closing device according to one aspect of the present invention, as described above, the regulating unit is arranged coaxially with the engaging member and includes an engaging member drive unit that moves the engaging member away from its engagement position with the door body fixing portion when disengaging the engaging member from the door body fixing portion. This allows the width of the regulating unit in the direction perpendicular to the movement direction of the engaging member to be smaller than when, for example, the engaging member and the engaging member drive unit are arranged side by side in the direction perpendicular to the movement direction of the engaging member. In other words, the size of the regulating unit in the direction perpendicular to the movement direction of the engaging member can be reduced. Furthermore, unlike when the engaging member drive unit drives the engaging member via a plunger or the like separate from the engaging member, the engaging member can be moved directly, thereby reducing the number of components of the regulating unit. As a result, a door opening / closing device can be provided that can reduce the size of the regulating unit in the direction perpendicular to the movement direction of the engaging member while reducing the number of components.

[0010] In the door opening and closing device according to the above aspect, preferably, the regulating unit is provided coaxially with the engaging member driving unit but at a different position from the engaging member driving unit, and further includes a biasing member that biases the engaging member so as to maintain the engagement between the engaging member and the door body fixing unit when the door body is in a closed state. With this configuration, the engaging member is biased by the biasing member, so that it is possible to prevent the engagement between the engaging member and the door body fixing unit from being disengaged due to influences such as vibration when the door body is in a closed state. Furthermore, because the biasing member is provided coaxially with the engaging member driving unit, it is possible to reduce the width of the regulating unit in a direction perpendicular to the movement direction of the engaging member.

[0011] In this case, preferably, the biasing member biases the engaging member toward the door body fixing part when the door body is changed from the open state to the closed state. With this configuration, when the door body is changed from the open state to the closed state, the engaging member can be moved toward the door body fixing part without relying on the engaging member driving part.

[0012] In the door opening / closing device in which the biasing member biases the engaging member toward the door body fixing portion, the engaging member drive unit preferably includes a solenoid body configured to surround the engaging member as a solenoid pin and having a solenoid body into which the engaging member is inserted and a solenoid coil that moves the engaging member by magnetic field force, and the biasing member is a compression coil spring that surrounds the engaging member and is arranged to be aligned with the solenoid body and the solenoid coil in the direction of extension of the engaging member. With this configuration, the solenoid pin constituting the electromagnetic solenoid can be used as the engaging member to maintain the door body closed. Furthermore, because the compression coil spring as the biasing member, the solenoid body, and the solenoid coil are aligned in the direction of extension of the engaging member, the size of the restricting unit can be made smaller than when they are arranged in a direction different from the direction of extension of the engaging member.

[0013] In the door closing device in which the biasing member biases the engaging member to move toward the door body fixing portion, preferably, the engaging member includes a pin member, the restricting portion further includes a first movable portion that moves up and down in conjunction with the pin member when disengaging the pin member from the door body fixing portion, the biasing member includes a compression coil spring, and the engaging member driving portion is configured to move the compression coil spring so as to compress it via the first movable portion, thereby disengaging the pin member from the door body fixing portion. Here, when using the pin member to directly compress the compression coil spring, it can be difficult to do so due to the small contact area between the pin and the compression coil spring. However, with the above configuration, the compression coil spring, which is difficult to compress with the tip of the pin member, can be easily compressed via the first movable portion. As a result, the pin member can be easily moved even when the restricting portion includes a compression coil spring.

[0014] In this case, it is preferable to further include a sensor for detecting the open state of the door body, and the first movable part extends in a horizontal direction perpendicular to the up-down direction in which the pin member moves, and has a protrusion that serves as a detection piece that is detected by the sensor when the door body is in the open state. With this configuration, the first movable part, which easily presses the compression coil spring, also serves as the detection piece that is detected by the sensor, so that the open state of the door body can be detected without increasing the number of components.

[0015] In the door opening / closing device including the first movable part, preferably, the regulating part further includes a second movable part that moves horizontally, perpendicular to the up-down direction of the pin member, as the engagement between the pin member and the door body fixing part is released, and the pin member is configured to be fixed in a state where it does not engage with the door body fixing part when the door body is in an open state by the first movable part and the second movable part moving relative to each other and coming into contact with each other at the open state holding position. With this configuration, even when the engagement member driving part stops applying force to the pin member, the first movable part and the second movable part come into contact with each other at the open state holding position, so that the position of the pin member is fixed in a state where it does not engage with the door body fixing part. As a result, it is possible to prevent the pin member from accidentally moving toward the door body fixing part when the door body is in an open state.

[0016] In this case, preferably, the first movable part has a position fixing roller that moves on the surface of the second movable part as the second movable part moves, changing the contact position with the second movable part, and the pin member is configured to be released from its fixed position in the open state of the door body and moved to engage with the door body fixing part as the contact position between the second movable part and the position fixing roller changes from the open state holding position to the regulating position as the second movable part moves. With this configuration, the contact position between the second movable part and the position fixing roller changes from the open state holding position to the regulating position as the second movable part moves, releasing the fixed position of the pin member in the open state of the door body, so the door body can be easily changed from the open state to the closed state. [Effects of the Invention]

[0017] According to the present invention, as described above, it is possible to provide a door opening and closing device that can suppress an increase in size in a direction perpendicular to the moving direction of the engaging member of the regulating portion while suppressing an increase in the number of components. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a diagram showing a positional relationship between a door opening / closing device and a door of a vehicle according to an embodiment of the present invention; [Figure 2] 1 is a cross-sectional view taken along the door opening / closing direction (X direction) in a door opening / closing device according to an embodiment of the present invention. [Figure 3] 1 is a cross-sectional view of a door opening / closing device according to an embodiment of the present invention, taken along a horizontal direction (Y direction) perpendicular to the door opening / closing direction (X direction). [Figure 4] FIG. 4 is a perspective view illustrating a configuration of a restricting portion according to an embodiment of the present invention. [Figure 5] FIG. 2 is a perspective view illustrating the configuration of a solenoid unit according to an embodiment of the present invention. [Figure 6] FIG. 2 is a perspective view illustrating the configuration of an up and down slider according to an embodiment of the present invention. [Figure 7] FIG. 2 is a perspective view illustrating the configuration of a horizontal slider according to one embodiment of the present invention. [Figure 8] FIG. 1 is a perspective view illustrating the configuration of a door fitting according to an embodiment of the present invention. [Figure 9] FIG. 1 is a perspective view illustrating a configuration of a drive device according to an embodiment of the present invention. [Figure 10] FIG. 10 is a front cross-sectional view illustrating the operation of the regulating part when the door body is changed from a closed state to an open state according to an embodiment of the present invention. [Figure 11] FIG. 10 is a front cross-sectional view illustrating the state of the restricting portion when the door body is in an open state according to an embodiment of the present invention. [Figure 12]FIG. 10 is a front cross-sectional view illustrating the operation of the restricting portion when the door body is changed from an open state to a closed state according to an embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view of a door opening / closing device according to a modified example of one embodiment of the present invention, taken along a horizontal direction (Y direction) perpendicular to the door opening / closing direction (X direction). DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the accompanying drawings.

[0020] First, with reference to FIG. 1, the configuration of a door opening / closing device 100 according to this embodiment will be described.

[0021] (Door closing device configuration) As shown in FIG. 1, the door opening / closing device 100 is an electrically operated device that opens and closes a door body 201, and is composed of a regulating device 10, a door body fitting 20 attached to the door body 201, and a driving device 30. The door opening / closing device 100 is arranged inside (in the passenger compartment) of the railway vehicle 200, and is covered by a cover 40 so as not to be visible to passengers and the like. The door body 201 and the door opening / closing device 100 are provided as a pair, symmetrically on the left and right. The driving device 30 is an example of a "driving source" in the claims.

[0022] In the following explanation, the left-right direction (one direction in a horizontal plane) in which the door body 201 opens when the door closing device 100 is viewed from the passenger compartment is defined as the X direction, and the opening direction of the door body 201 is defined as the X1 direction on one side of the X direction, and the closing direction of the door body 201 is defined as the X2 direction on the other side. The up-down direction (vertical direction) of the door closing device 100 is defined as the Z direction, and the upward direction is defined as the Z1 direction, and the downward direction is defined as the Z2 direction. The direction orthogonal to the X and Z directions of the door closing device 100 (the other direction in a horizontal plane) is defined as the Y direction, and the front side of the door closing device 100 viewed from the passenger compartment is defined as the Y1 direction, and the rear side is defined as the Y2 direction. The X direction is an example of the "horizontal direction" in the claims, and the Z direction is an example of the "up-down direction" in the claims.

[0023] (Configuration of the regulation device) Next, the configuration of the regulating device 10 according to this embodiment will be described with reference to FIGS.

[0024] FIG. 2 shows an enlarged view of the vicinity of the regulating device 10 when the door body 201 is in the closed state, and also shows a cross-sectional view of the regulating device 10 along the X direction (a cross-sectional view when cut along a plane along the XZ plane). The regulating device 10 includes a regulating unit 11, a fixed plate 12, a manual regulating unit 13, and switches 14 and 15. The regulating unit 11 will be described in detail below. The regulating unit 11, the manual regulating unit 13, the switches 14 and 15 are fixed to the fixed plate 12. The fixed plate 12 is connected to a housing 30a of the drive unit 30 by a fastening member (not shown) via a hole 12a. The manual regulating unit 13 includes a switch 13a and a lever 13b, and is used by a maintenance worker of the railway vehicle 200 or the like to manually change the open / closed state of the door body 201 only in an emergency, such as when the regulating unit 11 breaks down. Specifically, in an emergency, a maintenance worker or the like of the railway vehicle 200 turns the lever 13b clockwise to open the door body 201, and the switch 13a detects that the door body 201 is in the open state. The switch 14 is a sensor for detecting that the door body 201 is in the open state, and the switch 15 is a sensor for detecting that the door body 201 is in the closed state. The switch 14 is an example of a "sensor" in the claims.

[0025] The door fitting 20 includes an engaging fitting 21 and a fixed plate 22, and the restricting portion 11 is configured to engage with the engaging fitting 21 of the door fitting 20. Specifically, the restricting portion 11 is configured so that the pin 1a is inserted into the engaging opening 21a of the engaging fitting 21, restricting movement in the X direction, thereby maintaining the door 201 in a closed state. As shown in FIG. 3 , the engaging fitting 21 is connected to a fixed plate 22 fixed to the door 201. A roller 50a that moves while rolling on a rail 50 is attached to the fixed plate 22. Therefore, the engaging fitting 21 is provided so as to be movable in the X direction together with the door 201. The pin 1a is an example of an "engaging member" in the claims, and the engaging opening 21a is an example of a "door fitting fixing portion" in the claims.

[0026] 3, which is a cross-sectional view of the regulating device 10 taken along the Y-direction (a cross-sectional view taken along a plane along the YZ plane), the regulating device 10 further includes a switch 16. The switch 16 is attached to the housing 1d of the solenoid unit 1 via an attachment portion 16a, and when the door body 201 is in the open state, the switch 16 comes into contact with a screw 2m provided on the protrusion 2l of the up / down slider 2 to detect the open state of the door body 201. In this embodiment, as with the configuration described above in connection with FIGS. 2 and 3, the regulating unit 11 does not have a separate configuration for moving the pin 1a in either the X-direction or the Y-direction, which are orthogonal to the Z-direction in which the pin 1a moves.

[0027] (Configuration of the Regulatory Unit) Next, the configuration of the restricting portion 11 according to this embodiment will be described with reference to FIGS.

[0028] As shown in FIG. 4, the regulating section 11 is composed of a solenoid unit 1, a vertical slider 2, and a horizontal slider 3. Note that some fastening holes are omitted in FIG. 4. The solenoid unit 1 includes a housing 1d and is fixed to a fixed plate 12 (see FIG. 1) via a connection portion 1f of the housing 1d by a fastening member (not shown) or the like. The vertical slider 2 includes a linear guide 2c and a linear rail 2d, and the linear rail 2d is connected to the housing 1d of the solenoid unit 1 via an engaging member (not shown). The horizontal slider 3 includes a linear guide 3c and a linear rail 3d, and the linear rail 3d is fixed to the fixed plate 12 (see FIG. 1) via an engaging member (not shown). Note that the horizontal slider 3 is not fixed to the solenoid unit 1 and moves independently. Furthermore, the solenoid unit 1 is an example of an "engagement member driving part" in the claims, the vertical slider 2 is an example of a "first movable part" in the claims, and the horizontal slider 3 is an example of a "second movable part" in the claims.

[0029] As shown in FIG. 5, the solenoid unit 1 includes a pin 1a, a solenoid body 1b, a housing 1d, a spring fixing plate 1g, a buffer material 1i, a slider fixing portion 1j, and a fastening member 1k. The solenoid body 1b is configured to cover the periphery of the pin 1a and has a solenoid coil 1c therein. The housing 1d has a spring arrangement portion 1e and a connection portion 1f. The spring fixing plate 1g is fixed to the housing 1d through a hole 1h by a fastening member (not shown). The pin 1a is arranged coaxially with the solenoid body 1b. "Coaxial" refers to a state in which the central axis of the pin 1a coincides with the central axis of the solenoid body 1b.

[0030] The pin 1a is made of, for example, a magnetic metal. The solenoid body 1b is configured to attract the pin 1a by the force of a magnetic field generated by a current flowing through the solenoid coil 1c, causing it to move linearly in the Z direction. Specifically, the solenoid body 1b moves the pin 1a in the Z1 direction away from the engagement position with the engagement opening 21a (see FIG. 2).

[0031] The housing 1d is formed of, for example, insulating resin, and holds the solenoid body 1b, and is fixed to the fixed plate 12 via the connecting portion 1f. A horizontally biasing spring 3h (see FIG. 7) of the horizontal slider 3, which will be described later, is arranged in the spring arrangement portion 1e of the housing 1d, and one end of the horizontally biasing spring 3h is fixed thereto. Note that one end of a vertically biasing spring 2k (see FIG. 6) of the vertical slider 2, which will be described later, is fixed to the spring fixing plate 1g.

[0032] The buffer material 1i is an elastic member made of resin such as urethane, and is made of metal, and reduces the impact when the slider fixing part 1j, which moves up and down together with the pin 1a, hits the solenoid main body 1b. The fastening member 1k is, for example, a nut with a flat washer, and is attached to the pin 1a so as to sandwich the mounting part 2i (see Figure 6) of the up and down slider 2 together with the slider fixing part 1j.

[0033] As shown in FIG. 6, the vertical slider 2 includes a first portion 2a, a second portion 2f, a spring mounting portion 2h, a vertical biasing spring 2k, and a protrusion 2l. The vertical slider 2 is integrally formed, for example, from a resin member. The first portion 2a includes a hole 2b and is attached to a linear guide 2c by a fastening member (not shown), and the protrusion 2e is formed thereon. The linear guide 2c is attached to a linear rail 2d. A position fixing roller 2g is rotatably fixed to the second portion 2f. The spring mounting portion 2h includes a mounting portion 2i and a pin insertion hole 2j, and the vertical biasing spring 2k is mounted and fixed thereon. The vertical biasing spring 2k is an example of the "biasing member" and "compression coil spring" in the claims.

[0034] Here, as shown in Fig. 2, the mounting portion 2i of the vertical slider 2 is configured to be sandwiched between a slider fixing portion 1j fixed to the pin 1a and a fastening member 1k. Therefore, the vertical slider 2 is configured to move in the Z direction in conjunction with movement of the pin 1a in the Z direction. Note that the linear rail 2d is fixed to the housing 1d (see Fig. 5) of the solenoid unit 1 using a fastening member or the like (not shown), but the vertical slider 2 is attached to a linear guide 2c that moves freely in the Z direction on the linear rail 2d, and is therefore movable in the Z direction.

[0035] As shown in FIG. 7, the horizontal slider 3 includes a first portion 3a, a second portion 3e, and a horizontally biasing spring 3h. The horizontal slider 3 is integrally formed, for example, from a resin member. The first portion 3a includes a hole 3b and is attached to a linear guide 3c by a fastening member (not shown) or the like. The linear guide 3c is attached to a linear rail 3d. The first portion 3a has a stepped surface in the Z1 direction with two heights. Specifically, the first portion 3a has an open state retention surface 3i, which is the surface with a greater height in the Z1 direction, and a restriction surface 3j, which is the surface with a smaller height in the Z1 direction. The second portion 3e is connected to a spring placement portion 3f and a connection portion 3g.

[0036] Here, the horizontally biasing spring 3h is a so-called compression coil spring, and is inserted into the spring mounting portion 3f, with one end in the X1 direction fixed to the connecting portion 3g. Note that, as described above, one end in the X2 direction is fixed to the spring mounting portion 1e of the housing 1d of the solenoid unit 1. Therefore, the horizontal slider 3 is configured to move in the X direction as the horizontally biasing spring 3h expands from its compressed state. Note that, although the linear rail 3d is fixed to the fixed plate 12 (see FIG. 2) using a fastening member or the like (not shown), the horizontal slider 3 is attached to a linear guide 3c that moves freely in the X direction on the linear rail 3d, and is therefore movable in the X direction. Note that the connecting portion 3g is fixed to the mover 30c of the drive unit 30 (see FIG. 9).

[0037] (Door hardware configuration) Next, the configuration of the door fitting 20 according to this embodiment will be described with reference to FIG.

[0038] As shown in FIG. 8, the door fitting 20 includes an engaging fitting 21 and a fixing plate 22, and is attached to the door 201, and moves together with the door 201 in the X direction.

[0039] The engaging fitting 21 is formed of a metal material such as stainless steel, and includes an engaging opening 21a, an attachment opening 21b, a hole 21c, and a pressing portion 21d. The engaging opening 21a is an opening into which the pin 1a is inserted. Specifically, the engaging opening 21a is formed in a U-shape that opens in the Y direction when viewed from the Z direction, and restricts the inserted pin 1a from moving in the X direction. The attachment opening 21b is an opening into which a movable block 30d (described later) of the drive unit 30 is attached. Specifically, the attachment opening 21b is formed in a U-shape that opens in the Y direction when viewed from the Z direction, and restricts the inserted and attached movable block 30d from moving in the X direction. The engaging fitting 21 is attached to the fixed plate 22 via the hole 21c using a fastener or the like (not shown). The pressing portion 21d is attached to the end of the engaging fitting 21 in the X2 direction, and is arranged so as to press the switch 15 (see FIG. 2) when the door body 201 is in the closed state.

[0040] The fixed plate 22 includes a flat plate portion 22a and a hole portion 22b, and an engaging fitting 21 is attached to the flat plate portion 22a. The fixed plate 22 is attached to the door body 201 via the hole portion 22b with a fastening member (not shown) or the like. The shaft portion of a roller 50a (see FIG. 3), which moves while rotating on a rail 50 (see FIG. 3), is inserted into and fixed to the roller hole portion 22c of the fixed plate 22. In this way, the door body fitting 20 enables the door body 201 to move in the X direction along the rail 50.

[0041] (Driver configuration) Next, the configuration of the drive device 30 according to this embodiment will be described with reference to FIG.

[0042] As shown in FIG. 9, the driving device 30 uses a so-called linear motor, which is composed of a housing 30a, a fixed magnet 30b, a mover 30c, and a movable block 30d. The driving device 30 includes a control unit (not shown), which receives commands from an operator or the like to move the mover 30c to a predetermined position. A movable block 30d is attached to one end of the movable block 30c in the Z2 direction, and transmits force to the door body 201 via an engaging fitting 21 (see FIG. 8). In this way, the driving device 30 opens and closes the door body 201. Furthermore, since the mover 30c is fixed to a connecting portion 3g (see FIG. 7) of the horizontal slider 3, the force of moving the horizontal slider 3 in the X direction is transmitted to the door body 201 via the mover 30c and the door fitting 20.

[0043] (Operation of the restricting part) Next, the configuration of the drive device 30 according to this embodiment will be described with reference to FIG. 2 and FIGS.

[0044] FIG. 2 shows the state of the regulating part 11 when the door body 201 is closed. When the door body 201 is closed, the pin 1a is inserted into and engaged with the engagement opening 21a. In addition, the vertical biasing spring 2k, which is arranged to surround the pin 1a and is provided at a different position coaxially with the solenoid main body 1b, is extended in the Z direction. The pin 1a, the solenoid main body 1b, and the vertical biasing spring 2k are aligned in the Z direction. When the door body 201 is closed, the vertical biasing spring 2k biases the pin 1a fixed to the vertical slider 2 in the Z2 direction, toward the engagement opening 21a, via the vertical slider 2. As a result, when the door body 201 is closed, the engagement between the pin 1a and the engagement opening 21a is maintained. Furthermore, the horizontally biasing spring 3h of the horizontal slider 3 is in a compressed state because the movable element 30c is located near the end of the drive unit 30 on the X2 side and the pin 1a is engaged with the engagement opening 21a, preventing the door fitting 20 from moving in the X direction. The position fixing roller 2g of the vertical slider 2 is in contact with the regulating surface 3j of the horizontal slider 3. The contact position between this position fixing roller 2g of the vertical slider 2 and the regulating surface 3j of the horizontal slider 3 is defined as the regulating position.

[0045] Here, an operation will be described, for example, when the railway vehicle 200 stops at a station and the door body 201 is changed from a closed state to an open state to allow passengers to board and disembark. At this time, for example, when a driver or the like presses a button for performing the opening operation in the driver's cab, a current flows through the solenoid coil 1c (see FIG. 5) inside the solenoid main body 1b, and the pin 1a moves in the Z1 direction, as shown in FIG. 10. At this time, as the pin 1a moves in the Z1 direction, the vertical slider 2 fixed to the pin 1a also moves in the Z1 direction. Therefore, the vertical slider 2 moves while compressing the vertical biasing spring 2k arranged between the spring fixing plate 1g and the vertical slider 2 in the Z direction. In addition, the position fixing roller 2g of the vertical slider 2 moves in the Z1 direction, and the contact state (restricted position) with the restricting surface 3j of the horizontal slider 3 is released.

[0046] Then, as shown in Figure 11, the movement of the pin 1a in the Z1 direction is completed, and the pin 1a moves to a position separated from the engagement opening 21a. At this time, the vertical biasing spring 2k is in its most compressed state. In addition, the protrusion 2e of the vertical slider 2 presses the switch 14, the open state of the door body 201 is detected, and the drive unit 30 controls the mover 30c (see Figure 9) to a predetermined position. In the open state, the solenoid main body 1b stops flowing current to the solenoid coil 1c, and no magnetic field force is generated.

[0047] At this time, the horizontally biasing spring 3h of the horizontal slider 3 can extend in the X direction because the door fitting 20 becomes movable as the engagement between the pin 1a and the engagement opening 21a is released. As a result, the horizontally biasing spring 3h extends in the X direction, moving the horizontal slider 3 in the X1 direction and also moving the door fitting 20 in the X1 direction.

[0048] As the horizontal slider 3 moves in the X1 direction, the position fixing roller 2g of the vertical slider 2 comes into contact with the open state maintaining surface 3i. As a result, the vertical slider 2 cannot move in the Z2 direction even if the magnetic field force applied to the pin 1a from the solenoid body 1b is cut off. In other words, the pin 1a, which moves integrally with the vertical slider 2, is also restricted from moving in the Z2 direction, and its position is fixed in a state where it does not engage with the engagement opening 21a. This maintains the open state of the door body 201. The contact position between the position fixing roller 2g of the vertical slider 2 and the restricting surface 3j of the horizontal slider 3 is defined as the open state maintaining position.

[0049] Next, an operation of the regulating unit 11 when the door body 201 is changed from the open state shown in Fig. 11 to the closed state in order for the railway vehicle 200 to depart will be described. At this time, for example, when a driver or the like presses a button for performing the closing operation in the driver's cab, the driving device 30 controls the mover 30c to move it in the X2 direction as shown in Fig. 12.

[0050] At this time, the horizontal slider 3 moves in the X2 direction while compressing the horizontal biasing spring 3h. As a result, the position fixing roller 2g moves on the surface of the horizontal slider 3 in conjunction with the movement of the horizontal slider 3 in the X2 direction. Then, the contact position of the position fixing roller 2g changes from the open state maintaining surface 3i to the regulating surface 3j. In other words, the position of the position fixing roller 2g changes from the open state maintaining position to the regulating position. As a result, the vertical slider 2 and the pin 1a fixed to the vertical slider 2 are released from their fixed positions and become movable in the Z direction. As a result, the vertical biasing spring 2k biases the pin 1a toward the engagement opening 21a, and the pin 1a engages with the engagement opening 21a. In other words, the door body 201 enters the closed state as shown in Figure 2.

[0051] (Effects of this embodiment) Next, the effects of this embodiment will be described.

[0052] The door opening / closing device 100 of the above embodiment includes a drive unit 30 for opening and closing the door body 201, and a restricting unit 11 for restricting the movement of the door body 201 from a closed state to an open state. The restricting unit 11 includes a pin 1a that restricts the movement of the door body 201 in the opening direction by engaging with an engagement opening 21a fixed to the door body 201 when the door body 201 is in the closed state, and a solenoid unit 1 that is arranged coaxially with the pin 1a and moves the pin 1a in a direction away from its engagement position with the engagement opening 21a when the engagement between the pin 1a and the engagement opening 21a is released. This makes it possible to reduce the width of the restricting unit 11 in the Y direction perpendicular to the movement direction of the pin 1a compared to, for example, a case in which the pin 1a and the solenoid unit 1 are arranged side by side in the Y direction perpendicular to the movement direction of the pin 1a. In other words, it is possible to prevent the restricting unit 11 from becoming large in size in the Y direction perpendicular to the Z direction in which the pin 1a moves. Furthermore, unlike when the solenoid unit 1 drives the pin 1a via a plunger or the like that is separate from the pin 1a, the pin 1a can be moved directly, which prevents an increase in the number of components of the restriction portion 11. As a result, it is possible to prevent an increase in size of the restriction portion 11 in the Y direction, which is perpendicular to the Z direction in which the pin 1a moves, while also preventing an increase in the number of components.

[0053] In the above embodiment, the regulating part 11 is provided coaxially with the solenoid unit 1 at a position different from the solenoid unit 1, and further includes a vertical biasing spring 2k that biases the pin 1a to maintain the engagement between the pin 1a and the engagement opening 21a when the door body 201 is in the closed state. As the pin 1a is biased by the vertical biasing spring 2k, it is possible to prevent the engagement between the pin 1a and the engagement opening 21a from being released due to the influence of vibrations or the like when the door body 201 is in the closed state. Furthermore, as the vertical biasing spring 2k is provided coaxially with the solenoid unit 1, it is possible to reduce the width of the regulating part 11 in the Y direction, which is perpendicular to the Z direction in which the pin 1a moves.

[0054] In the above embodiment, the vertical biasing spring 2k biases the pin 1a to move toward the engaging opening 21a when the door body 201 is changed from the open state to the closed state. This allows the pin 1a to move toward the engaging opening 21a without relying on the solenoid unit 1 when the door body 201 is changed from the open state to the closed state.

[0055] In the above embodiment, the solenoid unit 1 is configured to cover the periphery of the pin 1a serving as a solenoid pin, and includes a solenoid body 1b into which the pin 1a is inserted, and a solenoid coil 1c that moves the pin 1a by the force of a magnetic field. The vertical biasing spring 2k is a compression coil spring that covers the periphery of the pin 1a and is arranged to be aligned with the solenoid body 1b and the solenoid coil 1c in the Z direction in which the pin 1a extends. This allows the solenoid pin that constitutes the electromagnetic solenoid to be used as the pin 1a that maintains the closed state of the door 201. Furthermore, because the vertical biasing spring 2k, the solenoid body 1b, and the solenoid coil 1c serving as the vertical biasing spring 2k are aligned in the direction in which the pin 1a extends, the size of the restricting portion 11 can be made smaller than when they are arranged in a direction different from the direction in which the pin 1a extends.

[0056] In the above embodiment, the engaging member includes a pin 1a, and the restricting unit 11 further includes a vertical slider 2 that moves in the Z direction in conjunction with the pin 1a when disengaging the pin member from the engagement opening 21a. The vertical biasing spring 2k includes a vertical biasing spring 2k, and the solenoid unit 1 is configured to move the vertical biasing spring 2k via the vertical slider 2 to compress it, thereby disengaging the pin 1a from the engagement opening 21a. Here, when using the pin 1a to directly compress the compression coil spring, it may be difficult to do so due to the small contact area between the pin 1a and the vertical biasing spring 2k. However, in this embodiment, the vertical biasing spring 2k, which is difficult to compress with the tip of the pin 1a, can be easily compressed via the vertical slider 2. As a result, the pin 1a can be easily moved even when the restricting unit 11 includes a compression coil spring.

[0057] Furthermore, in the above embodiment, a switch 14 for detecting the open state of the door body 201 is further provided, and the vertical slider 2 extends in the Y direction perpendicular to the Z direction in which the pin 1a moves, and has a protrusion 2e as a detection piece that is detected by a sensor when the door body 201 is in the open state. As a result, the vertical slider 2, which easily presses the vertical biasing spring 2k, also serves as the detection piece that is detected by the switch 14, so that the open state of the door body 201 can be detected without increasing the number of components.

[0058] In the above embodiment, the regulating unit 11 further includes a horizontal slider 3 that moves in the Y direction perpendicular to the Z direction in which the pin 1a moves as the engagement between the pin 1a and the engagement opening 21a is released, and the vertical slider 2 and the horizontal slider 3 move relative to each other and come into contact with each other at the open state holding position, so that the position of the pin 1a is fixed in a state where it does not engage with the engagement opening 21a when the door body 201 is in the open state. As a result, even when the solenoid unit 1 stops applying force to the pin 1a, the vertical slider 2 and the horizontal slider 3 come into contact with each other at the open state holding position, so that the position of the pin 1a is fixed in a state where it does not engage with the engagement opening 21a. As a result, it is possible to prevent the pin 1a from accidentally moving toward the engagement opening 21a when the door body 201 is in the open state.

[0059] Furthermore, in the above embodiment, the vertical slider 2 has a position fixing roller 2g that moves on the surface of the horizontal slider 3 as the horizontal slider 3 moves, changing the contact position with the horizontal slider 3, and the pin 1a is configured to be released from its fixed position in the open state of the door body 201 and moved to engage with the engagement opening 21a as the horizontal slider 3 moves, changing the contact position between the horizontal slider 3 and the position fixing roller 2g from the open state maintaining position to the restricting position. As a result, the contact position between the horizontal slider 3 and the position fixing roller 2g changes from the open state maintaining position to the restricting position as the horizontal slider 3 moves, releasing the fixed position of the pin 1a in the open state of the door body 201, so the door body 201 can easily be changed from the open state to the closed state.

[0060] [Variations] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims rather than the description of the above embodiments, and further includes all modifications (variations) within the meaning and scope of the claims.

[0061] For example, in the above embodiment, the restricting portion 11 is provided coaxially with the solenoid unit 1 at a position different from the solenoid unit 1, and further includes the vertical biasing spring 2k that biases the pin 1a so as to maintain the engagement state between the pin 1a and the engagement opening 21a when the door body 201 is in the closed state, but the present invention is not limited to this. In the present invention, the vertical biasing spring 2k may be provided integrally inside the solenoid unit 1, or the solenoid unit 1 may be configured to continue to maintain the position of the pin 1a in the Z direction without providing the vertical biasing spring 2k.

[0062] In the above embodiment, the vertical biasing spring 2k biases the pin 1a toward the engagement opening 21a when the door body 201 is changed from the open state to the closed state, but the present invention is not limited to this. In the present invention, when the door body 201 is changed from the open state to the closed state, the vertical biasing spring 2k may not be provided and the solenoid unit 1 may move the pin 1a in the Z2 direction toward the engagement opening 21a.

[0063] In the above embodiment, the solenoid unit 1 is configured to surround the periphery of the pin 1a (engagement member) serving as a solenoid pin. The solenoid unit 1 includes a solenoid body 1b into which the pin 1a is inserted and a solenoid coil 1c that moves the pin 1a by magnetic field force. The vertical biasing spring 2k is a compression coil spring that surrounds the periphery of the pin 1a and is arranged in line with the solenoid body 1b and the solenoid coil 1c in the direction in which the pin 1a extends. However, the present invention is not limited to this. In the present invention, the engagement member may be shaped, for example, like a metal plate. Alternatively, a separate solenoid may be provided coaxially with the engagement member and attract the engagement member, thereby moving the engagement member. Furthermore, a mechanism other than a solenoid, such as a hydraulic cylinder, may be used as long as it linearly moves the engagement member.

[0064] In the above embodiment, the engaging member includes the pin 1a, the restricting portion 11 further includes the vertical slider 2 that moves in the Z direction in conjunction with the pin 1a when the engagement between the pin member and the engagement opening 21a is released, the vertical biasing spring 2k includes a compression coil spring, and the solenoid unit 1 moves the vertical biasing spring 2k so as to compress it via the vertical slider 2, thereby releasing the engagement between the pin 1a and the engagement opening 21a. However, the present invention is not limited to this. In the present invention, the engaging member may have a shape such as a metal plate, or the engaging member (pin 1a) may directly move the vertical biasing spring 2k so as to compress it, thereby releasing the engagement between the pin 1a and the engagement opening 21a.

[0065] Furthermore, in the above embodiment, an example was shown in which a sensor for detecting the open state of the door body 201 was further provided, and the up / down slider 2 extended in the Y direction perpendicular to the Z direction in which the pin 1a moved, and had the protrusion 2e as a detection piece that contacts the switch 14 to detect when the door body 201 is in the open state, but the present invention is not limited to this. In the present invention, the switches 14 to 16 may be non-contact sensors, and the number and positions of the switches 14 to 16 and the number and positions of the protrusions 2e and 2l may also be freely changed. For example, if the switch 16 is not used, the protrusion 2l need not be provided, as shown in the modified example of FIG. 13, and therefore the thickness of the door opening / closing device 100 in the Y direction can be made smaller.

[0066] In the above embodiment, the restricting unit 11 further includes the horizontal slider 3 that moves in the Y direction, perpendicular to the Z direction in which the pin 1a moves, when the engagement between the pin 1a and the engagement opening 21a is released. The vertical slider 2 and the horizontal slider 3 move relative to each other and come into contact with each other at the open state holding position, thereby fixing the position of the pin 1a in a state where it does not engage with the engagement opening 21a when the door body 201 is in the open state. However, the present invention is not limited to this. For example, the horizontal slider 3 may be used only to move the door body fitting 20 in the X1 direction when the pin 1a moves away from the engagement opening 21a, rather than to fix the position of the pin 1a by contacting the vertical slider 2 and the horizontal slider 3 at the open state holding position due to the relative movement of the vertical slider 2 and the horizontal slider 3. In this case, a current may be continuously applied to the solenoid coil 1c to prevent the position of the pin 1a from moving.

[0067] In the above embodiment, the vertical slider 2 has a position fixing roller 2g that moves on the surface of the horizontal slider 3 as the horizontal slider 3 moves, changing the contact position with the horizontal slider 3, and the pin 1a is configured so that the contact position between the horizontal slider 3 and the position fixing roller 2g changes from the open state holding position to the regulating position as the horizontal slider 3 moves, thereby releasing the fixed position of the pin 1a in the open state of the door body 201 and moving so as to engage with the engagement opening 21a, but the present invention is not limited to this. In the present invention, the position fixing roller 2g may be configured with a member other than a roller that slides on the surface of the horizontal slider 3.

[0068] In addition, in the above embodiment, an example has been shown in which the regulating unit 11 regulates the movement of the door body 201 provided on the railway vehicle 200, but the present invention is not limited to this. In the present invention, the regulating unit 11 may be configured to regulate the movement of the door body 201 provided on something other than the railway vehicle 200 (for example, an elevator or a bus).

[0069] In addition, in the above embodiment, an example was shown in which the driving device 30 is a linear motor and is disposed on each of a pair of door bodies 201 disposed symmetrically on the left and right, but the present invention is not limited to this. In the present invention, the driving device 30 may be any configuration that can drive the door body 201, and may be provided in common to the pair of door bodies 201. For example, the driving device 30 may use a rotating electric motor and a rack-and-pinion rail, etc. [Explanation of symbols]

[0070] 1 Solenoid unit (engagement member drive unit) 1a Pin (engagement member, pin member) 1b Solenoid body 1c solenoid coil 2 Up / down slider (first movable part) 2e Protrusion 2g Position fixed roller 2k Vertical biasing spring (biasing member, compression coil spring) 3 Horizontal slider (second moving part) 3h Horizontal bias spring 10 Regulator 11 Regulatory Department 14, 15, 16 Switch (sensor) 20 Door hardware 21a Engagement opening (door body fixing part) 30 Drive unit (drive source) 100 Door closing device 200 rail cars 201 Door

Claims

1. A drive source for opening and closing the door body; A restricting portion restricts the door body from moving from a closed state to an open state, The restriction portion is an engaging member that restricts movement of the door body in the opening direction by engaging with a door body fixing portion fixed to the door body when the door body is in a closed state; and an engaging member drive unit that is arranged coaxially with the engaging member and that moves the engaging member in a direction away from its engagement position with the door body fixing portion when releasing the engagement state between the engaging member and the door body fixing portion.

2. 2. The door opening and closing device according to claim 1, wherein the regulating portion is provided coaxially with the engaging member driving portion but at a position different from the engaging member driving portion, and further includes a biasing member that biases the engaging member so as to maintain an engaged state between the engaging member and the door body fixing portion when the door body is in a closed state.

3. The door opening and closing device according to claim 2, wherein the biasing member biases the engaging member so as to move the engaging member toward the door body fixing portion when the door body is changed from an open state to a closed state.

4. the engaging member driving unit is configured to cover the periphery of the engaging member as a solenoid pin, and includes a solenoid body into which the engaging member is inserted, and a solenoid coil that moves the engaging member by the force of a magnetic field; 4. The door opening / closing device according to claim 3, wherein the biasing member is a compression coil spring that surrounds the engaging member and is arranged to be aligned with the solenoid body and the solenoid coil in the direction in which the engaging member extends.

5. the engaging member includes a pin member; The restricting portion further includes a first movable portion that moves in the up and down direction in conjunction with the pin member when the engagement between the pin member and the door body fixing portion is released, the biasing member includes a compression coil spring; 4. The door closing device according to claim 3, wherein the engagement member driving portion is configured to move the compression coil spring so as to compress it via the first movable portion, thereby releasing the engagement state between the pin member and the door body fixing portion.

6. Further provided is a sensor for detecting the open state of the door body, 6. The door opening and closing device according to claim 5, wherein the first movable part extends in a horizontal direction perpendicular to the up-down direction in which the pin member moves, and has a protrusion as a detection piece that is detected by the sensor when the door body is in the open state.

7. The restricting portion further includes a second movable portion that moves in a horizontal direction perpendicular to the vertical direction of movement of the pin member when the engagement between the pin member and the door body fixing portion is released, 6. The door closing device according to claim 5, wherein the pin member is configured to be fixed in position without engaging with the door body fixing portion when the door body is in an open state by the first movable portion and the second movable portion moving relative to each other and coming into contact with each other at an open state holding position.

8. the first movable portion has a position fixing roller that moves on a surface of the second movable portion as the second movable portion moves, and a contact position with the second movable portion is changed; 8. The door closing device according to claim 7, wherein the pin member is configured to be released from the fixed position of the door body in the open state and moved toward the door body fixing part as the contact position between the second movable part and the position fixing roller is changed from the open state holding position to a regulating position as the second movable part moves.

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