JP2010189978A - Locking/unlocking device for emergency escape door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking/unlocking device which improves operability of unlocking operation. <P>SOLUTION: The locking/unlocking device includes a lock member 13, an energizing member 14, an operation member 15, and a switching member 16. The lock member 13, which can be switched between a locking position and an unlocking position, makes a door body of an emergency escape door locked in a closed position. The energizing member 14 generates an energizing force in the direction where the lock member 13 moves from the locking position to the unlocking position, and the operation member 15 can be operated from the track side. The switching member 16 locks the lock member 13 in the locking position against the energizing force of the energizing member 14 and releases the lock member 13 in accordance with the operation of the operation member 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a locking / unlocking device for an emergency escape door.

  Conventionally, as disclosed in Patent Document 1 below, a locking / unlocking device used for an emergency escape door is known. The locking / unlocking device disclosed in Patent Document 1 includes an upper lock member and a lower lock member that are interlocked with an operation lever. The upper lock member and the lower lock member are movable between a lock position protruding from the upper end surface or lower end surface of the vertical shaft of the door panel and an unlocked position retracted into the vertical wall, and a coil spring. When the operating lever is pressed and operated, it moves to the unlocked position against the urging force of the coil spring.

JP 2007-100372 A

  In the locking / unlocking device disclosed in Patent Document 1, the lock member is biased in the direction toward the lock position by the coil spring, and resists the biasing force of the coil spring when operating the operation lever. To move the lock member. For this reason, if the elastic force of the coil spring for holding the lock member in the locked position is set to a large value, a large force is required to operate the operation lever. It is not suitable as an unlocking device. On the other hand, if the elastic force of the coil spring is set to a small one, a large lock member cannot be used, the lock member cannot be secured, and the reliability at the time of locking is lacking. The problem arises.

  The objective of this invention is providing the locking / unlocking apparatus which improved the operativity of unlocking operation, ensuring the reliability of a locking / unlocking apparatus.

  In order to achieve the above object, the present invention is a locking / unlocking device applied to an emergency escape door having a hinged door type door, which can be switched between a locking position and an unlocking position. A locking member for locking the door body of the escape door to a closed position; a biasing member that generates a biasing force in a direction from the locking position toward the unlocking position; and the emergency escape door An operation member that can be operated from one side with respect to the urging member, and locks the lock member in the locking position against the urging force of the urging member, while unlocking the lock member in response to an operation of the operation member And an emergency escape door locking / unlocking device.

  In the present invention, the switching member releases the lock of the lock member according to the operation of the operation member. In other words, the operation member can release the lock of the lock member when a force necessary for releasing the lock of the lock member is applied. When the lock member is unlocked, the lock member moves from the lock position to the release position by the biasing force generated by the biasing member. Therefore, in the locking / unlocking device of the present invention, it is not necessary to oppose the biasing force of the biasing member when the lock member is moved from the locking position to the unlocking position, so the force required to unlock the locking member is The force may not be large enough to counteract the biasing force of the biasing member. For this reason, while being able to use the biasing member which has strong biasing force, it can be set as a highly rigid structure also as a lock member. Therefore, the force required for the unlocking operation can be suppressed, and the reliability at the time of locking as the locking / unlocking device can be improved. In addition, since the lock member is unlocked in conjunction with the operation of the operation member, the one-action opening that enables the emergency escape door to be opened only by the operation of the operation member is possible.

  Here, the locking member is movable between a locking position and an unlocking position, and includes a first lock portion that locks the emergency escape door at the locking position, and a locking position and an unlocking position. A second lock portion that is movable in a direction parallel to the moving direction of the first lock portion and that locks the emergency escape door together with the first lock portion at the locking position; and the first lock portion And a connecting portion that connects the second locking portion, and the biasing member includes the connecting portion in a direction in which the first locking portion and the second locking portion are directed from the locking position to the unlocking position. It is preferable to energize.

  In this aspect, since the emergency escape door is locked by both the first lock portion and the second lock portion, the reliability when the emergency escape door is locked by the lock member can be further improved. In addition, since the urging member urges the connecting portion, it is possible to release the locks by the two lock portions at a time only by operating the operation member. Therefore, the apparatus configuration can be simplified as compared with the configuration in which the first lock portion and the second lock portion are separately biased.

  In this aspect, the switching member is configured to engage with the connecting portion at the locking position and in a direction substantially orthogonal to the direction of the urging force of the urging member according to the operation of the operation member. It is more preferable to have an engaging portion that can move between the retracted position moved from the engaging position.

  In this aspect, when the engaging part of the switching member is in the engaging position, the connecting part engages with the engaging part of the switching member, and the first lock part and the second lock part are held in the locking position. When the engaging portion of the switching member moves to the retracted position in response to the operation of the operating member, the connection between the connecting portion and the engaging portion of the switching member is disengaged, so that the connection receiving the urging force of the urging member The part moves to the unlocking position.

  Furthermore, it is preferable that a return knob capable of returning the lock member from the unlocked position to the locked position is provided.

  In this aspect, by operating the return knob to return the lock member from the unlocked position to the locked position, the engaging portion and the connecting portion are engaged again, whereby the lock member is held in the locked position. Therefore, even when the locking member is urged in the direction toward the unlocking position by the urging member, the locking member can be easily returned to the locking position.

  A switching biasing member that applies a biasing force in a direction from the retracted position toward the engagement position to the switching member; and the operation member includes the engagement portion at the engagement position. It is preferable that a pressing portion capable of pressing the switching member in a direction from the position toward the retracted position is provided.

  In this aspect, the engagement portion is positioned at the engagement position by the urging force of the switching urging member. When the operating member is operated, the pressing portion of the operating member presses the switching member, and the engaging portion at the engaging position is moved to the retracted position. On the other hand, after the operation member is operated, the engagement portion returns to the engagement position by the urging force of the switching urging member.

  In this aspect, it is preferable that a stopper is provided that restricts the movement of the engagement portion when the engagement portion moves from the retracted position to the engagement position.

  In this aspect, when the engaging portion returns to the engaging position by the urging force of the switching urging member, the stopper restricts the movement of the engaging portion to the engaging position. For this reason, it is possible to return the engaging portion to the engaging position while preventing the switching member from interfering with other members.

  It is preferable that the switching member is provided with a release knob that can be operated from the side opposite to the operation member with respect to the emergency escape door.

  In this aspect, since the release knob is provided on the side opposite to the operating member, the emergency exit door can be released from the side opposite to the operating member.

  As described above, according to the present invention, the reliability of the locking / unlocking device can be ensured and the operability of the unlocking operation can be improved.

It is a figure which shows the state by which the locking / unlocking apparatus which concerns on embodiment of this invention was attached to the emergency escape door of a platform door apparatus. It is the figure which looked at the emergency escape door and locking / unlocking device of FIG. 1 from the side. It is a front view which shows the site | part by the side of the 1st case part of a locking / unlocking apparatus in the state which removed the outer surface part. It is a side view of the site | part by the side of the 1st case part of a locking / unlocking apparatus. It is sectional drawing in the VV line | wire of FIG. It is sectional drawing in the VI-VI line of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The locking / unlocking device for an emergency escape door according to the present embodiment is applied to an emergency escape door provided in a platform door device. The platform door device is installed along the track-side edge of the platform, and the platform door device partitions the platform on the track side and on the inside of the platform. And one surface of the emergency escape door faces the track side, and the other surface faces the inside of the home.

  The platform door device includes a guide box (not shown), a door panel (not shown), a partition panel (not shown), and the like. A gap formed between fixed bodies such as a guide box and a partition panel becomes an emergency passage, and an emergency escape door is provided to open and close the emergency passage.

  As shown in FIG. 1, the emergency escape door 1 is a hinged door type emergency escape door having a pair of left and right door bodies 3 and 4. Each of the door bodies 3 and 4 has support shaft portions 3a and 4a supported by the fixed body, and rotates around the support shaft portions 3a and 4a. In the emergency escape door 1, both door bodies are so-called double doors in which the support shaft portions 3 a, 4 a are located at both ends of the emergency passage and the door ends of the door bodies 3, 4 are the center position of the emergency passage. 3 and 4 are open.

  The locking / unlocking device 10 of this embodiment is used by being attached to the emergency escape door 1. In this embodiment, as shown in FIG. 2, the locking / unlocking device 10 is attached to the upper part of the emergency escape door 1 on the track side. Hereinafter, the structure of the locking / unlocking apparatus 10 is demonstrated concretely.

  As shown in FIGS. 3 and 4, the locking / unlocking device 10 includes a casing 11, a support 12, and a lock member 13 that is supported by the support 12 so as to be relatively displaceable with respect to the support 12. An urging member 14 for applying an urging force to the lock member 13, an operation member 15 for releasing the lock, a switching member 16 for switching between locking and unlocking in conjunction with the operation member 15, and the door 3 , 4 is provided with a receiving member 17 (see FIG. 1) capable of receiving the lock member 13 in the closed position.

  The casing 11 has a first case portion 21 fixed to the left door body 3 and a second case portion 22 (see FIG. 1) fixed to the right door body 4. The first case portion 21 and the second case portion 22 are both flat hollow bodies that are long in the vertical direction.

  As shown in FIG. 5, the first case portion 21 is a hollow one having a space formed therein, and is joined to the raceway side surface of the left door body 3, and has a joint surface portion 21 a formed in a rectangular shape. A side surface portion 21b protruding in a direction orthogonal to the joint surface portion 21a from the peripheral edge portion of the joint surface portion 21a, a rectangular outer surface portion 21c joined to the side surface portion 21b and arranged in parallel with the joint surface portion 21a, Have The joining surface portion 21a and the side surface portion 21b are an integrated member obtained by bending one plate material, and the outer surface portion 21c is fastened and fixed thereto.

  The second case portion 22 is formed symmetrically with the first case portion 21 and, like the first case portion 21, has a hollow shape in which a rectangular parallelepiped space is formed.

  As shown in FIG. 3, the lock member 13 includes a first lock portion 13a, a second lock portion 13b, and a connecting portion 13c. The first lock portion 13 a is composed of a rod-shaped member, and is disposed horizontally and parallel to the door body 3. The 2nd lock part 13b is comprised by the rod-shaped member, and is arrange | positioned in parallel with the 1st lock part 13a in the position away from the 1st lock part 13a below. The first lock portion 13a and the second lock portion 13b protrude from the first case portion 21 toward the second case portion 22 through an insertion hole 21d formed in the side surface portion 21b on the door tip side in the first case portion 21. ing.

  The connecting portion 13c connects the first lock portion 13a and the second lock portion 13b so that they are parallel to each other, and has a predetermined length in the vertical direction. The upper end portion of the coupling portion 13c is coupled to the proximal end portion of the first lock portion 13a, and the lower end portion of the coupling portion 13c is coupled to the proximal end portion of the second lock portion 13b. The connecting portion 13c is provided with a pressing member 13d at an intermediate portion between the upper end portion and the lower end portion.

  The support body 12 is disposed in the first case portion 21 and slidably supports the first support member 25 that slidably supports the first lock portion 13a and the second lock portion 13b. A second support member 26, and a third support member 27 disposed between the first support member 25 and the second support member 26.

  The first support member 25 includes a flat plate-like support portion 25a configured to be fixed to the door body 3 together with the first case portion 21, and a guide hole that is fixed to the support portion 25a and through which the first lock portion 13a passes. And a guide portion 25b. The second support member 26 includes a flat plate-like support portion 26a that can be fixed to the door body 3 together with the first case portion 21, and a guide hole that is fixed to the support portion 26a and through which the second lock portion 13b passes. And a guide part 26b. The guide portions 25b and 26b extend in parallel with the door body 3 in the width direction of the door body 3, and the first lock portion 13a and the second lock portion 13b are guided by the guide portions 25b and 26b while being guided by the guide portions 25b and 26b. It moves along the longitudinal direction of 26b. Accordingly, the connecting portion 13c is also movable in this direction.

  As shown in FIG. 5, the third support member 27 is superposed on the joint surface portion 21 a of the first case portion 21 and fixed to the joint surface portion 21 a, and one side end portion ( A door end side extending portion 27b extending in a direction perpendicular to the mounting portion 27a from the door end side) and parallel to the side surface portion 21b of the first case portion 21, and the other side end portion of the mounting portion 27a ( A shaft-side extending portion 27c that extends in a direction perpendicular to the mounting portion 27a from the shaft-side end portion and is parallel to the side surface portion 21b of the first case portion 21; It is formed in a shape.

  The urging member 14 is configured by a coil spring, and is interposed between the door-side extension portion 27b of the third support member 27 and the pressing member 13d of the connecting portion 13c in a compressed state. Accordingly, the connecting portion 13c is urged by the urging member 14 in a direction away from the door end side. The urging member 14 expands and contracts according to the forward / backward movement of the connecting portion 13c (lock member 13). The urging member 14 is disposed so as to be displaced in the vertical direction from the switching member 16.

  A buffer member 29 is attached to the shaft side extension 27c of the third support member 27 at a position corresponding to the connecting portion 13c. And the buffer member 29 provided in the 3rd support member 27 is already in the unlocking position where the lock | rock of the 1st lock part 13a and the 2nd lock part 13b is cancelled | released, when the connection part 13c contact | abuts. Is set to

  As shown in FIG. 6, the operation member 15 includes a pair of first leg portions 15 a that are pivotally supported by the third support member 27, and a first operation portion 15 b that is supported by both the first leg portions 15 a. ing. The inner end of one first leg 15a is pivotally supported by the door end side extension 27b of the third support member 27, and the inner end of the other first leg 15a is the first. 3 is pivotally supported by the shaft-side extension 27 c of the support member 27. Both the first leg portions 15 a are extended toward the track side from the inside to the outside of the first case portion 21 through the through holes formed in the outer surface portion 21 c of the first case portion 21. The first leg 15a is biased to the state shown in FIG.

  The first operation portion 15b is a rod-like member extending horizontally in the direction parallel to the outer surface portion 21c outside the first case portion 21, and is coupled to the outer end portions of the first leg portions 15a. When a passenger gets on the track side of the door body 3 and presses the first operation portion 15b, the first leg portions 15a rotate around the shaft portion of the inner end portion.

  As illustrated in FIG. 1, the operation member 15 includes a second operation unit 15 c. The first operation unit 15 b is arranged at a position corresponding to the left door body 3, while the second operation unit 15 c is arranged at a position corresponding to the right door body 4. Therefore, not only the unlocking operation on the left door 3 side but also the unlocking operation on the right door 4 side is possible.

  The second operation portion 15 c is coupled to a pair of second leg portions 15 d that are pivotally supported by a bracket 31 disposed in the second case portion 22. The second leg portion 15d has the same configuration as the first leg portion 15a. And the door end side end 15e of the 2nd operation part 15c is contact | abutting to the 1st operation part 15b, and when the 2nd operation part 15c is pressed, this door end side end 15e will be 1st operation part 15b. It is comprised so that may be pressed. When the first operation unit 15b is pressed, the first operation unit 15b is separated from the second operation unit 15c.

  The switching member 16 is for locking the lock member 13 in the locking position, and for releasing the lock of the lock member 13 in accordance with the operation of the operation member 15. As shown in FIG. 6, the switching member 16 is formed by bending a plate material, and is disposed in the first case portion 21.

  The switching member 16 is attached to the third support member 27 via a torsion coil spring 33 which is an example of a switching urging member at one end portion in the width direction of the first case portion 21 (moving direction of the lock member 13). Yes. The switching member 16 is biased toward the track side by the torsion coil spring 33.

  The third support member 27 is provided with a stopper 35 so as to be positioned on the track side with respect to the switching member 16. The switching member 16 is in contact with the stopper 35 on the side surface of the track during normal operation when the operation member 15 is not operated. On the other hand, the pressing portion 15f provided on the first leg portion 15a is also in contact with the track side surface of the switching member 16. In the first leg portion 15a, the pressing portion 15f is provided between the inner end portion that is pivotally supported and the outer end portion to which the first operation portion 15b is coupled. For this reason, the pressing part 15f is displaced in the same direction as the first operation part 15b. And if the 1st operation part 15b or the 2nd operation part 15c is operated, the edge part on the opposite side to the torsion coil spring 33 in the switching member 16 will be pressed.

  The switching member 16 has an engaging portion 16a that can be engaged with the connecting portion 13c in a state of being in contact with the stopper 35. The engaging portion 16a is formed by bending a plate material so that a recess having a size that allows the connecting portion 13c to be inserted is formed on the side surface of the track of the switching member 16. In the part, it is provided over the entire vertical direction. The connecting portion 13c is located on the track side of the engaging portion 16a, and the engaging surface with which the connecting portion 13c is engaged is in the engaging position where the engaging portion 16a is engaged with the connecting portion 13c. The direction is substantially orthogonal to the moving direction of the connecting portion 13c. The engaging surface can be displaced in a direction substantially orthogonal to the moving direction of the connecting portion 13c by the pressing of the pressing portion 15f. And the engaging part 16a can be displaced to the retracted position which is located inside the home from the connecting part 13c and is disengaged from the connecting part 13c. In other words, the pressing portion 15f presses the switching member 16 in a direction in which the engaging portion 16a moves from the engaging position toward the retracted position, and the engaging portion 16a is engaged with the engaging position and the urging force. The member 14 is movable between the retracted position moved from the engaging position in a direction substantially orthogonal to the direction of the urging force of the member 14.

  When the connecting portion 13c is engaged with the engaging portion 16a, the lock member 13 is in the locked position. As shown in FIG. 1, when the lock member 13 is in the locking position, the first lock portion 13 a and the second lock portion 13 b are inserted into the receiving holes of the receiving member 17 provided in the second case portion 22.

  The receiving member 17 has a first receiving portion 17a and a second receiving portion 17b. The first receiving portion 17 a is disposed in the second case portion 22 at a position corresponding to the first support member 25 of the first case portion 21, and is fixed to the second case portion 22. The 1st receiving part 17a is located on the extension line of the guide hole of the 1st support member 25, and has a receiving hole which can insert the 1st lock | rock part 13a. The second receiving portion 17 b is disposed in the second case portion 22 at a position corresponding to the second support member 26 of the first case portion 21, and is fixed to the second case portion 22. The 2nd receiving part 17b is located on the extension line of the guide hole of the 2nd support member 26, and has a receiving hole which can insert the 2nd lock part 13b. When the first lock portion 13a and the second lock portion 13b are inserted into the corresponding receiving holes, the left door body 3 and the right door body 4 are locked with each other and cannot be opened from the closed position.

  On the other hand, when the engagement between the connecting portion 13c and the engaging portion 16a is released, the connecting portion 13c is moved to the shaft side by the biasing force of the biasing member 14, and the lock member 13 is in the unlocked position. That is, the movement of the connecting portion 13c causes the first lock portion 13a to come out of the receiving hole of the first receiving portion 17a, while the second lock portion 13b comes out of the receiving hole of the second receiving portion 17b, The lock is released.

  As shown in FIG. 5, the locking / unlocking device 10 is provided with a return knob 39 used to move the connecting portion 13c from the unlocking position to the locking position. The proximal end of the return knob 39 is coupled to the connecting portion 13c, and the distal end protrudes from the first case portion 21 to the inside of the home through the long hole 27d of the mounting portion 27a. The door 3 is formed with a through hole that exposes the return knob 39 to the inside of the home, so that the return knob 39 can be operated from the inside of the home.

  The switching member 16 is smoothly inclined from the end on the shaft base side to the engaging portion 16a. When the connecting portion 13c moves from the unlocked position to the locked position, it contacts the switching member 16, but since the switching member 16 has such an inclined shape, the return knob 39 is not caught. The operability of the return knob 39 is not hindered.

  As shown in FIG. 6, the switching member 16 is provided with a release knob 41 for releasing the lock from the inside of the home. The release knob 41 is attached to the inner surface of the switching member 16 and protrudes from the first case portion 21 to the inner side of the home through the through hole 27e of the attachment portion 27a. The door 3 is formed with a through-hole that exposes the release knob 41 to the inside of the home, so that the release knob 41 can be operated from the inside of the home. That is, the release knob 41 can be operated from the side opposite to the operation member 15 with respect to the emergency escape door 1. In the present embodiment, the lock is released when the engaging portion 16a is displaced in the direction perpendicular to the door body 3 (the direction connecting the track side and the inside of the home). By simply pulling the knob 41, the engaging portion 16a and the connecting portion 13c are disengaged, and the lock can be released.

  Here, operation | movement of the locking / unlocking apparatus 10 of this embodiment is demonstrated.

  In the present locking / unlocking device 10, the connecting portion 13 c of the lock member 13 is biased in the direction toward the unlocking position by the biasing member 14, while the connecting portion 13 c is engaged with the engaging portion 16 a of the switching member 16. Has been. Therefore, normally, the engaging portion 16a is positioned at the engaging position, the lock member 13 is in the locking position, the first lock portion 13a is inserted into the receiving hole of the first receiving portion 17a, and the second locking portion 13b is inserted into the receiving hole of the second receiving portion 17b. That is, when the engaging portion 16a of the switching member 16 is in the engaged position, the connecting portion 13c engages with the engaging portion 16a of the switching member 16, and the first lock portion 13a and the second lock portion 13b are in the locked position. Retained. For this reason, the left door body 3 and the right door body 4 cannot be opened.

  In an emergency such as when the train departs from a predetermined stop position, passengers etc. unlock the door bodies 3 and 4 from the track side of the emergency escape door 1. This unlocking operation is performed by pressing the first operating portion 15b or the second operating portion 15c of the operating member 15. When the first operation unit 15 b or the second operation unit 15 c is pressed, the pressing unit 15 f of the operation member 15 presses the switching member 16. Thereby, the engaging part 16a in an engaging position moves toward a home inner side, and becomes a retracted position. When the engaging portion 16a of the switching member 16 moves to the retracted position in accordance with the operation of the operating member 15, the engagement between the connecting portion 13c and the engaging portion 16a is released, so that the biasing force of the biasing member 14 is received. The connecting portion 13 c moves toward the unlocking position and stops when it contacts the buffer member 29. Accordingly, the first lock portion 13a and the second lock portion 13b are detached from the receiving holes of the first receiving portion 17a and the second receiving portion 17b, respectively. And the lock member 13 is hold | maintained in an unlocking position, and the door bodies 3 and 4 can be opened.

  On the other hand, after the operation member 15 is operated, the engaging portion 16 a returns to the engaging position by the biasing force of the torsion coil spring 33.

  Thereafter, when the emergency escape door 1 is locked again, the return knob 39 is operated to return the lock member 13 from the unlocked position to the locked position. As a result, the engaging portion 16a and the connecting portion 13c of the switching member 16 are engaged again, whereby the lock member 13 is held in the locked position.

  On the other hand, when the emergency escape door 1 is in the locked state, when the unlocking operation is performed from the inside of the home, the release knob 41 may be operated. When the release knob 41 is pulled, the switching member 16 moves to the inside of the home, so that the engaging portion 16a and the connecting portion 13c are disengaged, and the engaging portion 16a becomes the retracted position. Thereby, the connection part 13c moves to the axial side, and the lock by the lock member 13 can be removed.

  As described above, in the locking / unlocking device 10 of this embodiment, the switching member 16 unlocks the lock member 13 in response to the operation of the operation member 15. In other words, the operation member 15 can release the lock of the lock member 13 when a force necessary for releasing the lock of the lock member 13 is applied. When the lock of the lock member 13 is released, the lock member 13 is moved from the lock position to the release position by the urging force generated by the urging member 14. Therefore, in the present locking / unlocking device 10, it is not necessary to oppose the urging force of the urging member 14 when moving the locking member 13 from the locking position to the unlocking position, and thus it is necessary to release the lock of the locking member 13. The force may be a force having a magnitude that cannot counter the urging force of the urging member 14. For this reason, the biasing member 14 having a strong biasing force can be used, and the lock member 13 can have a highly rigid structure. Therefore, the force required for the unlocking operation can be suppressed, and the reliability at the time of locking as the locking / unlocking device 10 can be improved. In addition, since the lock of the lock member 13 is released in conjunction with the operation of the operation member 15, the one-action opening that enables the emergency escape door 1 to be opened only by the operation of the operation member 15 is possible.

  In addition, in the present embodiment, the emergency escape door 1 is locked by both the first lock portion 13a and the second lock portion 13b. Therefore, reliability when the emergency escape door 1 is locked by the lock member 13 is used. Can be further improved. Furthermore, in this embodiment, since the urging member 14 is configured to urge the connecting portion 13c, it is possible to release the locks by the lock portions 13a and 13b at a time only by operating the operation member 15. it can. Therefore, the device configuration can be simplified as compared with the configuration in which the first lock portion 13a and the second lock portion 13b are separately energized.

  In the present embodiment, since the return knob 39 is provided, the locking member 13 can be easily moved even when the locking member 13 is urged in the direction toward the unlocking position by the urging member 14. Can be returned to the locked position.

  In the present embodiment, when the engaging portion 16a returns to the engaging position by the urging force of the torsion coil spring 33, the stopper 35 restricts the movement of the engaging portion 16a to the engaging position. For this reason, it is possible to return the engaging portion 16a to the engaging position while preventing the switching member 16 from interfering with other members.

  In this embodiment, since the release knob 41 that can be operated from the side opposite to the operation member 15 is provided for the emergency escape door 1, the operation member 15 is defined for the emergency escape door 1. Release operation from the opposite side is possible.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the lock member 13 is provided on the left door body 3 and engages with the receiving portions 17a and 17b in the second case portion 22 attached to the right door body 4 that is the counterpart member. However, the lock member 13 may be directly engaged with the door body 4. That is, the lock member 13 may be housed inside the door body 3, while the receiving hole may be formed in the door body 4.

  In the above embodiment, the example in which the lock member 13 is provided on the left door body 3 has been described. However, the lock member 13 is provided on the right door body 4, while the receiving portions 17a and 17b are provided on the left door body 3. It is good also as a structure provided in. In this case, the left door 3 is the counterpart member.

  Moreover, although the example applied to the emergency escape door 1 having the pair of left and right door bodies 3 and 4 that open the door is described in the embodiment, the embodiment is applied to the emergency escape door 1 having one door body 3 and 4. May be. In this case, a receiving part is provided in the partition panel and guide box of a platform door apparatus.

  Moreover, in this embodiment, although applied to the emergency escape door 1 provided in the platform door apparatus which is a movable fence, it is not restricted to this, For example, the emergency escape door 1 provided in the platform screen door apparatus It is also possible to apply to the emergency escape door 1 provided in the building.

13 lock member 13a first lock portion 13b second lock portion 13c connecting portion 14 biasing member 15 operation member 15f pressing portion 16 switching member 16a engagement portion 33 torsion coil spring (an example of switching biasing member)
35 Stopper 39 Return knob 41 Release knob

Claims (7)

A locking / unlocking device applied to an emergency escape door having a hinged door body,
A locking member that can be switched between a locking position and an unlocking position, and for locking the door body of the emergency escape door to a closed position;
A biasing member that generates a biasing force in a direction from the locking position toward the unlocking position;
An operation member operable from one side with respect to the emergency escape door;
An emergency escape comprising: a switching member that locks the locking member in the locking position against the urging force of the urging member, and that unlocks the locking member in response to an operation of the operating member. Door unlocking and unlocking device. The locking member is
A first locking part that is movable between a locking position and an unlocking position, and that locks the emergency escape door at the locking position;
A second lock that is movable between a locking position and an unlocking position in a direction parallel to the moving direction of the first locking portion, and that locks the emergency escape door together with the first locking portion at the locking position. And
A connecting portion that connects the first lock portion and the second lock portion;
2. The locking and unlocking of the emergency escape door according to claim 1, wherein the biasing member biases the connecting portion in a direction in which the first lock portion and the second lock portion are directed from the locking position toward the unlocking position. apparatus.   The switching member is moved from the engagement position in a direction substantially perpendicular to the direction of the urging force of the urging member according to the operation of the operation member and the engagement position engaged with the connecting portion in the locking position. The locking / unlocking device for an emergency escape door according to claim 2, further comprising an engaging portion that is movable between the moved retracted position.   The locking / unlocking device for an emergency escape door according to claim 3, further comprising a return knob capable of returning the lock member from the unlocked position to the locked position. A switching urging member that applies a urging force to the switching member in a direction in which the engaging portion moves from the retracted position toward the engaging position;
The locking / unlocking device for an emergency escape door according to claim 3, wherein the operating member includes a pressing portion capable of pressing the switching member in a direction in which the engaging portion moves from the engaging position toward the retracted position.   The locking / unlocking device for an emergency escape door according to claim 5, further comprising a stopper that restricts movement of the engagement portion when the engagement portion moves from the retracted position to the engagement position.   The locking / unlocking device for an emergency escape door according to claim 1, wherein the switching member is provided with a release knob operable from the opposite side to the operation member with respect to the emergency escape door.

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