JP2005213900A - Lock device for emergency escape door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for emergency escape door capable of slimming an emergency escape door frame and reducing the weight of the emergency escape door and light in handle operation. <P>SOLUTION: The lock device for the emergency escape door is adapted to be ordinarily locked in a closed state and releases the lock to open the emergency escape door in the case that a lock releasing operation is performed. This lock device comprises an arm 27 rocking with the center thereof pivotally supported by a horizontal shaft 29 protrusively provided in a door panel; a first rod 19 connected to one end of the arm 27 through a pin 19a and extended upward; a second rod 22 connected to the other end of the arm 29 through a pin 22a and extended downward; a compression coil spring 35 energizing the first rod 19 and the second rod 22 in the extending direction, thereby locking the tip of each rod to a locking part near the door panel; an operation means 8 for lock releasing operation; and rod contracting mechanisms 31, 33 and 19b contracting, in case the that the lock releasing operation is performed by the operation means 8, the first rod 19 and the second rod 22 against the energizing force of the compression coil spring 35 to release the tip of each rod from the locking part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an emergency escape door locking device provided for emergency opening of a platform door.

  Conventionally, a platform door is installed on the track side of the platform for the purpose of ensuring passenger safety.

  This platform door is designed to open and close doors that open and close in conjunction with the train doors, door pockets that store the doors, and passengers in trains that have entered the train in an emergency where the doors do not open. The emergency escape door provided so that it can evacuate is provided (for example, refer patent document 1).

  For example, a gremon lock is built in the door end side of the emergency escape door and locked in the closed state in normal times. The hinge can be opened by pivoting to the platform side using the hinge as a fulcrum.

The gremon lock has a gremon lock body and an upper rod bar and a lower rod bar extending vertically from the gremon lock body, and the rod bars are interlocked in opposite directions by a rack and pinion mechanism. ing. In addition, each rod bar is urged by a spring in the extending direction, and if the unlocking handle is operated, each rod bar can be moved in the contracting direction against the urging force of the spring, The emergency escape door can be unlocked.
JP 2001-233201 A

  The above-mentioned conventional gremon lock rotates a pinion fixed to the rotating shaft of the unlocking handle, and lifts and lowers a pair of rack rails engaged on both the left and right sides of the pinion. There was room for improvement in operability.

  Further, in order to be able to guide the movement of the rack rail while maintaining the arrangement of the pinion and the rack rail, the Gremon lock body is housed in a strong case and unitized. Therefore, when the gremon lock body is built in, for example, a vertical wall of an emergency escape door, the vertical wall must be sized to accommodate the gremon lock body, and the emergency escape door frame cannot be slimmed. There is also a problem.

  The present invention has been made in consideration of the problems in the conventional manual unlocking device as described above, and the handle operation is light and can be stored in a limited space, and the emergency escape door frame is slimmed and emergency escape is achieved. It is an object of the present invention to provide an emergency door locking device that can reduce the weight of the door.

  The present invention has a door panel that is pivotally opened and closed, and in a normal state, the door panel is locked in a closed state, and when unlocked, the lock is released and unlocked. An arm that swings with a central portion pivotally supported by a horizontal axis, a first rod that is connected to one end of the arm via a pin and extends upward, and a pin at the other end of the arm via a pin A second rod connected and extending downward, and a rod extending means for urging the first rod and the second rod in the extending direction to lock the tip of each rod to a locking portion near the door panel; The operation means for unlocking operation and when the unlocking operation is performed by this operation means, the first rod and the second rod are contracted against the urging force of the rod extending means, and the tip of each rod is A lock device for emergency escape door comprising a rod reduction means disengaging from the locking portion.

  In the present invention, a pin is fixed to each of the first rod and the second rod, and a long hole is formed in the arm longitudinal direction at one end and the other end of the arm, and the pin is engaged with the long hole. For example, both rods can be interlocked with the parallel first rod and second rod arranged close to each other. For example, when the lock device is stored in the vertical shaft of the emergency escape door, the width of the vertical rod Can be shortened.

  Moreover, it is preferable to provide the guide block which expands-contracts a 1st rod and a 2nd rod in a parallel state in this invention. If this guide block is arranged on both the upper and lower sides of the arm, the first rod and the second rod can be expanded and contracted more accurately, which is further preferable.

  In the present invention, the rod reducing means is preferably configured to reduce both rods when the operating means is pushed up. This eliminates the need for a spring force for holding the operating means in a lifted posture as in the case of depressing the operating means, and makes the unlocking operation of the operating means lighter.

  In the present invention, the rod reducing means has a crank that swings with a horizontal axis protruding from the door panel as a fulcrum, and a long hole is formed in the crank longitudinal direction at the tip of the crank. If the hole is configured to engage the pin fixed to the first rod or the second rod, the first rod or the second rod can be moved directly in the unlocking direction by operating the operating means. Therefore, the operation force of the unlocking operation can be efficiently transmitted to each rod.

  Further, a handle can be attached to the horizontal shaft, and by pushing up the handle, the crank can be rotated upward with the horizontal shaft as a fulcrum, and the second rod can be raised through the pin.

  Further, in the present invention, if the guide block, the crank, and the arm are arranged in series in the vertical shaft of the door panel, the horizontal width of the lock device is reduced, and the vertical shaft with sufficient space is not allowed. The lock device can be stored.

  According to the lock device of the present invention, the handle operation is light, and it can be stored in a limited space, so that the emergency escape door frame can be slimmed and the emergency escape door can be reduced in weight.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 is an overall view of an emergency escape door to which a locking device according to the present invention is applied, wherein (a) shows a front view as seen from the platform side, and (b) shows a right side view thereof. Yes.

  In both figures, the emergency escape door 1 is provided as a part of a screen type platform door having a ceiling height, and is normally locked in a closed state and can be manually opened in an emergency. Hereinafter, the configuration of each unit will be described.

  The emergency escape door 1 is composed of a frame frame 2 assembled in a window frame shape with a rectangular tube member, and a glass panel 3 fitted and fixed in the frame frame 2. The door bottom side vertical shaft 4 is connected to the platform door fixed panel 6 via a plurality of hinges 5, and the emergency escape door 1 can be swiveled by pushing the door end side toward the platform side with the hinge 5 as a fulcrum. Can be done.

  A lock device (to be described later) for locking or unlocking the emergency escape door 1 is built in the door shaft side vertical shaft 7 of the emergency escape door 1.

  Further, an unlocking handle 8 is provided at an intermediate portion in the height direction of the emergency escape door 1 in a state of being spanned between the left and right vertical rods 4 and 7. This handle 8 has a rod-shaped handle portion 8a, one of the handle portions 8a being supported by the door butt side vertical rod 4 via an arm 8b, and the other being attached to the door tip side vertical rod 7 via an arm 8c. It is supported.

  FIG. 1 shows a state where the handle 8 is not operated, that is, a state where the emergency escape door 1 is locked, and the upper pin 9 protrudes from the upper collar 10 and engages with a pin receiver 11 of a header box (not shown). The lower pin 9 protrudes from the lower rod 13 and is engaged with a pin receiver 15 embedded in the platform 14.

  When the handle portion 8a of the handle 8 is pushed up (rotated approximately 50 ° in the direction of arrow A), the upper pin 9 is removed from the pin receiver 11 and the lower pin 12 is removed from the pin receiver 15 so that the lock is released. It has become.

  Thus, if the lock is released by operating the handle portion 8a of the handle 8 to the push-up side, the handle is supported compared to the case of releasing the lock by operating the handle to the push-down side. Thus, the operating force of the handle 8 can be reduced.

  In the figure, reference numeral 16 denotes a seal that is mounted in the longitudinal direction on the door tip of the emergency escape door 1.

  FIG. 2 is an enlarged view of the structure of the lock device housed in the vertical shaft 7. FIG. 2 (a) is a left side view and FIG. 2 (b) is a front view.

  In both drawings, the forward / backward movement of the upper pin 9 is guided by an upper pin guide block 17 fixed to the door end side upper collar 10, and the rear end (lower end) of the upper pin 9 is U-shaped. It is connected to the upper rod 19 through a connecting metal fitting 18.

  On the other hand, the forward / backward movement of the lower pin 12 is guided by the lower pin guide block 20 fixed to the door-end side lower arm 13, and the rear end (upper end) of the lower pin 9 is U-shaped. It is connected to the lower rod 22 through a connecting metal fitting 21.

  An upper rod (first rod) 19 and a lower rod (second rod) 22 are arranged so that the central axes are parallel, and each rear end portion of each rod 19, 22 is connected to the lock body portion 23. .

  FIG. 3 is an enlarged view of the lock body 23. FIG. 3 (a) corresponds to FIG. 2 (a), and FIG. 3 (b) corresponds to FIG. 2 (b).

  In FIG. 3, the rear end portions of the upper rod 19 and the lower rod 22 are supported by an upper rod guide block 24 and a lower rod guide block 25 that are spaced apart in the vertical direction so as to be movable up and down. The blocks 24 and 25 are fixed to a base plate 28 described later with fixing screws 26. The base plate 28 is fixed to the inner wall of the vertical rod 7 by a fixing screw (not shown).

  Each of the rod guide blocks 24 and 25 is made of a resin having a through-hole, for example, Duracon, for allowing the rods 19 and 22 to pass through in parallel. By using this type of resin as a guide member, each rod 19 , 22 and the weight of the lock body 23 is reduced.

  Further, pins 19a and 22a are respectively implanted in the upper rod 19 and the lower rod 22, and both ends of the arm 27 are connected to these pins 19a and 22a.

  Specifically, the central portion of the arm 27 is pivotally supported by a support shaft 29 erected from the base plate 28, and swings in the direction of arrow B about the support shaft 29. However, long holes 27a and 27b are formed at both ends of the arm 27 in the longitudinal direction of the arm 27. When the arm 27 rotates, one pin 19a can move in the long hole 27a, and the other pin 22a moves in the long hole 27b. Therefore, the upper rod 19a and the lower rod 22 are interlocked in opposite directions via the arm 27 while maintaining a parallel state.

  Also, by providing the long holes 27a and 27b at both ends of the arm 27, the upper rod 19 and the lower rod 22 arranged in parallel can be made to approach in the left-right direction, and the lock body portion 23 can be made compact. Can be configured.

  A cover 30 for preventing dust from entering is disposed outside the arm 27. In FIG. 3B, the cover 30 is indicated by a two-dot chain line, and in FIG. 3A, it is indicated by a solid line so that the configuration of the arm 27 can be easily grasped.

  The cover 30 has slits 30a and 30b formed in parallel in the vertical direction. The slit 30a guides the movement of the pin 19a, and the slit 30b guides the movement of the pin 22a. The slit 30a restricts the movement range of the upper rod 19 and 30b restricts the movement range of the lower rod 22, respectively.

  In addition, a bent portion 30c that is bent toward the base plate 28 is formed on both the left and right sides of the cover 30, and a notch 30d that is notched in a convex shape is formed in the center of the bent portion 30c. Yes. The notches 30d are formed to avoid interference between the ends of the arm 27 and the bent portion 30c of the cover 30 when the arm 27 swings.

  By providing this notch 30d, the lateral width W of the cover 30 can be shortened without being affected by the swinging range of the arm 27, so that the lock body portion 23 can be made compact.

  A rotation shaft (horizontal shaft) 31 is disposed in the left-right direction between the cover 30 and the lower rod guide block 25, and the rotation shaft 31 is rotatably supported by two support plates 32a and 32b. Has been.

  A crank 33 is extended substantially toward the base plate 28 at the center of the shaft portion of the rotating shaft 31, and a long hole 33a is formed at the tip of the crank 33, and the lower rod 22 is formed in the long hole 33a. The fixed pin 19b is engaged. The rotating shaft 31, the crank 33, and the pin 19b function as rod reducing means.

  The arm 8c of the handle 8 described above is fixed to the tip portion (left side of the drawing) of the rotating shaft 31.

  Further, a flange 34 is formed in a portion of the lower rod 22 near the lower rod guide block 25, and a compression coil spring (rod extension means) is provided between the flange 34 and the lower rod guide block 25. 35 is interposed.

  FIG. 4 shows the upper pin 9 as viewed from the direction C in FIG.

  In the figure, a shutter 36 is provided at an upper portion of the vertical rod 7 so as to be able to advance and retreat from the track side surface 7a of the vertical rod 7.

  The shutter 36 is made of a thin plate in which an opening 36 a is formed, and is urged toward the track by a compression coil spring 37.

  When the upper pin 9 is retracted and stored in the vertical shaft 7, the shutter 36 jumps from the position indicated by the two-dot chain line (see 36 ′) to the position indicated by the solid line, and an opening 36 a formed in the shutter 36 is formed. By closing the outlet of the upper pin 9, the upper pin 9 is held in the retracted state, that is, the unlocked state.

  Since the upper pin 9 and the lower pin 12 are interlocked as described above, the lower pin 12 is similarly held in a locked state.

  When the emergency escape door 1 is closed, the shutter 36 comes into contact with, for example, a fixed portion formed on the platform and is pushed into the platform side. Thereby, the opening 36a corresponds to the upper pin 9, and the upper pin 9 and the lower pin 12 protrude to return to the locked state.

  Next, the operation of the lock device having the above configuration will be described with reference to FIG.

  Assume that the platform door does not open even if the train enters, and passengers evacuate on the platform.

  When the passenger grasps the handle portion 8a of the handle 8 and pushes it up in the direction of arrow A, the crank 33 rotates in the direction of arrow D and pushes up the pin 19b engaged with the long hole 33a of the crank 33.

  The lower rod 22 fixing the pin 19b is pushed up against the urging force of the compression coil spring 35, and the upper rod 19 and the lower rod 22 are connected by the arm 27 and interlock with each other in the opposite direction. The upper rod 19 is pushed down. As a result, the upper pin 9 and the lower pin 12 are disengaged from the pin receivers 11 and 15, respectively (see FIG. 1) and unlocked.

  At this time, if the emergency escape door 1 is pushed slightly toward the platform in this state, the shutter 36 (see FIG. 4) protrudes to hold the upper rod 19 in the retracted state, so that the lower rod 22 is also maintained in the retracted state. The If the emergency escape door 1 is subsequently pushed, the emergency escape door 1 can be opened manually.

  When the emergency escape door 1 is closed after the passenger evacuates, the shutter 36 comes in contact with the fixed portion and moves backward, and the upper pin 9 of the upper rod 19 corresponds to the opening 36a. At this time, the upper pin 9 and the lower pin 12 protrude from the end faces of the emergency escape door 1 by the restoring force of the compressed compression coil spring 35, and are engaged with the pin receivers 11 and 15, respectively. 1 returns to the locked state.

  In addition, although the case where the locking device of the present invention is applied to the single-open emergency exit door 1 has been described as an example in the above embodiment, it can be applied to a double-open emergency escape door. In that case, a locking device will be attached to the door shaft side of the left and right emergency escape doors.

  Further, in the above embodiment, the case where the platform door is provided with a dedicated emergency escape door has been described as an example. However, in the configuration in which the door pocket that houses the open / close door also serves as the emergency escape door, the locking device of the present invention is It can also be provided on the door pocket panel.

  Moreover, if it comprises so that another handle | steering_wheel can be mounted | worn from the insertion hole of the vertical shaft 7 with respect to the spindle 29 shown in FIG. 3, a locking device can also be unlocked from the platform side. . In the above embodiment, the handle 8 having the rod-like handle portion 8a is used. However, the present invention is not limited to this, and the support shaft 29 can be operated by attaching a lever.

(a) is the front view of the emergency escape door which concerns on this invention, (b) is the right view. (a) is the front enlarged view which shows the internal structure of the vertical fence of an emergency escape door, (b) is the left view. (a) is an enlarged view of the lock body part of FIG. 2 (a), (b) is an enlarged view of the lock body part of FIG. 2 (b). It is a C arrow top view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Emergency escape door 2 Frame frame 3 Glass panel 4 Door bottom side vertical shaft 5 Hinge 6 Fixed panel 7 Door tip side vertical shaft 8 Handle 9 Upper pin 10 Upper rod 12 Lower pin 13 Lower rod 14 Platform 17 Upper pin guide block 19 Upper rod 20 Lower pin guide block 22 Lower rod 23 Lock body 27 Arm 28 Base plate 29 Support shaft 30 Cover 30a, 30b Slit 30c Bending portion 30d Notch 31 Rotating shaft 33 Crank 35 Compression coil spring

Claims (7)

In a locking device for an emergency escape door that has a door panel that is pivotally opened and closed, and that the door panel is normally locked in a closed state and is unlocked and opened when unlocked.
An arm that swings with a central portion pivotally supported by a horizontal shaft protruding in the door panel;
A first rod connected to one end of the arm via a pin and extending upward;
A second rod connected to the other end of the arm via a pin and extending downward;
A rod extending means for urging the first rod and the second rod in the extending direction to lock the tip of each rod to the locking portion near the door panel;
Operation means for unlocking operation;
When the unlocking operation is performed by the operating means, the first rod and the second rod are contracted against the urging force of the rod extending means, and the tip portions of the rods are detached from the locking portions. A locking device for an emergency escape door, characterized by comprising a rod contracting means.   The pin is fixed to the first rod and the second rod, respectively, and a long hole is formed in the arm longitudinal direction at one end and the other end of the arm, and the pin is engaged with the long hole. The emergency escape door locking device according to claim 1.   The locking device for an emergency escape door according to claim 1 or 2, further comprising a guide block for extending and contracting the first rod and the second rod in a parallel state.   The emergency escape door locking device according to any one of claims 1 to 3, wherein the rod reducing means is configured to reduce both the rods when the operating means is pushed up.   The rod reducing means has a crank that swings around a horizontal axis protruding from the door panel as a fulcrum, and a long hole is formed in the longitudinal direction of the crank at the tip of the crank. The locking device for an emergency escape door according to any one of claims 1 to 4, wherein a pin fixed to the rod or the second rod is engaged.   6. A handle is attached to the horizontal shaft, and when the handle is pushed up, the crank rotates upward with the horizontal shaft as a fulcrum, and the second rod rises through the pin. The emergency escape door locking device as described.   The locking device for an emergency escape door according to claim 5 or 6, wherein the guide block, the crank, and the arm are arranged in series in a vertical shaft of the door panel.

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