JP3195089U - Evacuation ladder - Google Patents

Abstract

Provided is an evacuation ladder having a structure that can be easily connected to an evacuation exit during an emergency evacuation of a train, and a connection portion with the evacuation exit can be easily hooked but cannot be easily detached. A ladder basic member 120 having a pair of cylindrical struts 121 and a step bar 122 is used as a basic unit, and the cylindrical strut body 121 extends from the uppermost ladder basic member 120 to the lowermost ladder basic member 120. The ladder base member 120 is slidably connected in a slidable manner in the cylinder axis direction, and the ladder basic member 120 is contracted and the ladder basic member 120 is extended. A latch 130 for hanging the ladder main body 110 on the lower rail of the train's evacuation exit is provided with a fitting member having a wedge surface with respect to the lower evacuation exit rail, and is interposed between the lower rail of the evacuation exit and the latch 130. Can be easily hooked but cannot be easily removed. When it is hung from the lower pier of the evacuation exit through the hook 130 at the time of evacuation, the ladder main body 110 extends and changes to the extended use state, and is temporarily fixed by the lock mechanism 140. [Selection] Figure 1

Description

  The present invention relates to an evacuation ladder equipped in a vehicle when a passenger escapes from the vehicle and evacuates in an abnormal situation of a train vehicle. More particularly, the present invention relates to an evacuation ladder that opens a vehicle evacuation port and connects the evacuation port to the ground outside the train vehicle.

  In general, an evacuation ladder device can be stored and stored compactly without being bulky during normal times, and in the event of an emergency such as an abnormal situation of a train, the evacuation port of the vehicle is opened and the evacuation port can be easily pointed to the ground. It has excellent handling operability so that it can be deployed and immediately secure an evacuation route by descending movement. In addition, the train's evacuation exit is so high that it gives the refugees a sense of security during emergency evacuation. Therefore, it is desired to be strong in strength and secure use safety.

For example, when an emergency such as a fire occurs in a railway vehicle, there may be a situation where a passenger is evacuated to the outside of the vehicle. As an evacuation ladder for a railway vehicle, one that escapes from the passenger entrance on the side of each vehicle is known.
For example, an escape ladder for a railway vehicle disclosed in Japanese Patent Application Laid-Open No. 2001-315640 is known. As shown in FIG. 10, this refuge ladder for a railway vehicle supports the ladder unit 6 so that it can be pulled out by sliding it in a direction parallel to the sleeper direction with the slide support mechanism 4. The hanger rail mechanism 12 and the slide rail mechanism 13 are of a two-stage drawer type. With the ladder unit 6 pulled out to the outside, the ladder unit 6 can be rotated via the rotation support mechanism 5 to form a predetermined angle with respect to the road surface.

  Further, as an evacuation ladder for a railway vehicle, an evacuation ladder shown in Japanese Patent Laid-Open No. 2002-187546 is also known. As shown in FIG. 11, the evacuation ladder is attached to the evacuation ladder so as to lie along the traveling direction under the floor of the vehicle side surface. Both are fixed in a suspended state along the side wall of the vehicle. In the event of an emergency, the occupant goes out of the entrance door that opens and closes at the head or tail of the vehicle body 2 and changes the direction on the tread plate 4 in a direction parallel to the vehicle body 2. Use it to get off. Thus, a plurality of emergency boarding routes can be secured by using a plurality of boarding gates provided on the side surface of the railway vehicle.

JP 2001-315640 A JP 2002-187546 A

  The above railway vehicle evacuation ladder can be used if the evacuation ladder is deployed. However, the actual emergency is to evacuate immediately, such as a fire or rock fall that occurred in a specific vehicle. There is a need to. The above-described railroad evacuation ladder needs to be deployed after the driver goes out of the train. This is time consuming and labor intensive, and may be inappropriate as an emergency response.

Here, passenger railways are often operated with multiple vehicles connected, and there are often through-passages between the vehicles that can freely come and go. It is possible to move to the vehicle at the head or the tail of the train by overlapping the movement to adjacent vehicles. It is assumed that guidance is provided to evacuate from the evacuation exit at the end of the first or last vehicle of this train.
In Japan, in order to make an emergency evacuation to the outside of a vehicle, it is obliged to provide evacuation exits for escaping to the outside of the train at the front and rear ends of the train. In particular, this emergency exit is an essential requirement for Japanese subway vehicles. A crew member opens the door by operating the unlocking handle of the emergency exit device from the inside of the car, sets a ladder provided as ancillary equipment here on the floor, and uses this ladder to evacuate passengers from the train onto the track outside the car The method is taken.

Generally, a bracket is provided on the floor inside the emergency door at the front and rear ends of the vehicle, and the folding ladder is fixed to the bracket so that it can be stored in the retracted state. In emergency evacuation, the emergency door is opened and folded. There are things that expand so that the lower end of the ladder reaches the ground, and make it usable.
However, rotating the folding ladder that is fixed to the bracket so as to be pivotable and disposing it outside the vehicle and further deploying it would be a laborious operation.
Here, if the portable evacuation ladder is light, the portable evacuation ladder is taken out from the front and rear ends of the train toward the outside of the train, and the ladder is directed from the evacuation exit to the outside ground. It is very convenient if hung. In particular, an extendable ladder can be folded to be stored compactly when not in use, and can be easily extended during evacuation, so that it has excellent operability.

  In the case of a portable evacuation ladder, the connection between the evacuation port and the portable ladder is particularly important. A large number of passengers evacuate to the road surface outside the vehicle via the portable evacuation ladder, and if the evacuation port and the portable ladder are disconnected, the passenger falls and an accident is caused. Therefore, the connection part of an escape port and a portable ladder is connected firmly once it connects, and the device which cannot be removed easily is required.

On the other hand, because it is an emergency, if it takes too much time and effort to connect the evacuation port and the portable ladder, the evacuation activity will be hindered. Therefore, when connecting the portable ladder to the evacuation exit, it is necessary to devise a structure that allows easy and reliable connection.
Moreover, since there may be various situations where the train car is stopped and the road surface state, it is necessary to appropriately determine where to select the ground contact surface of the evacuation ladder. If the ground contact surface of the evacuation ladder is selected, the angle applied to the evacuation port of the evacuation ladder is preferably variable. In the case of a portable evacuation ladder, in order to change the angle applied to the evacuation port, it is necessary to be able to freely adjust the connection angle between the evacuation port and the portable ladder.

  The present invention has been made in view of the above circumstances, and can be stored compactly in the storage state, has an operability that can be easily handled during emergency evacuation, and connects a portable ladder to the evacuation port. The purpose of the present invention is to provide an evacuation ladder device having a structure that can be easily and reliably connected when the evacuation port is connected, and the connection portion between the evacuation port and the portable ladder is firmly connected once connected and cannot be easily detached. To do.

  In order to achieve the above object, an evacuation ladder according to the present invention includes a pair of cylindrical struts arranged in parallel to each other at a predetermined interval, and a step bar that is horizontally mounted between the upper ends of the cylindrical struts. With the ladder basic member provided as a basic unit, the adjacent ladder basic members are sequentially connected so as to be slidable in the cylinder axis direction of the cylindrical column body from the ladder basic member at the uppermost stage to the ladder basic member at the lowermost stage. A retractable retracted state in which the ladder basic member is slid and contracted, a telescopic ladder main body having an extended use state in which the ladder basic member is slid and extended, and the ladder main body under the escape port of the vehicle. A locking mechanism for temporarily fixing the ladder basic members to each other when triggered by the fact that the ladder basic members slide to each other and are in the extended use state; The vehicle's evacuation exit through a latch Much of the the suspended beneath crosspiece ladder body is a refuge ladder capable hung up on the ground outside the vehicle becomes the extension use state extends downwards.

  Here, a hook is formed in a U-shaped hook portion that hooks on a lower rail of the vehicle's evacuation port, and a gap generated on an inner wall surface of the hook portion that receives the lower beam of the evacuation port of the vehicle A fitting member having a substantially equal depth width, a wedge surface on the surface facing the lower rail, and an angle of the wedge surface being variably attached, an upper surface of the inner wall of the hook portion, and the fitting member An elastic body that is attached between the upper surfaces and makes the angle of the wedge surface variable; and when the hook is hooked on the lower rail of the vehicle escape port, the wedge surface of the fitting member is The fitting is opposed to the opposite surface of the crosspiece, and the fitting member becomes a wedge interposed between the inner wall surface of the latch and the lower crosspiece.

  With the above configuration, the hook and the lower beam of the evacuation port are fastened by a fitting member interposed as a wedge, and if the hook is fitted into the lower frame of the evacuation port from above, it can be easily fitted. As a result, the angle of the wedge surface of the fitting member changes, and as a result, it functions as a wedge with respect to the hook and the lower beam of the escape port, and the hook and the lower beam of the escape port are not easily displaced.

Next, in order to make the angle applied to the evacuation port variable, the connection angle between the evacuation port and the portable ladder can be freely adjusted. It has a structure that can be rotated in a vertical plane with respect to the body, and can be fitted to the lower rail regardless of the inclination angle of the ladder body with respect to the escape port of the vehicle. Preferably there is.
With the above configuration, the connection angle between the escape port and the portable ladder can be freely adjusted.

  Next, as a further contrivance, a handrail is provided for the safety of evacuating passengers. Since the escape ladder is telescopic, the handrail can be telescopic. Therefore, the evacuation ladder of the present invention includes two or more cylindrical bodies sequentially connected in a slidable manner, and includes at least the cylindrical strut body of the uppermost ladder basic member and the lowermost ladder basic member. A handrail mechanism connected to the cylindrical support body via a connecting member having a predetermined length and combined to expand and contract in accordance with the expansion and contraction of the ladder body, and the handrail mechanism is connected to the left and right support columns of the ladder body. A structure provided for either or both of the above.

Moreover, in order to connect the latching tool of an evacuation ladder to the lower pier of an evacuation exit, it is preferable to provide a grip part which can be grasped as it is with respect to a passenger standing at the evacuation exit. In view of this, the handrail mechanism has a structure including a handrail body that expands and contracts in conjunction with the expansion and contraction of the ladder body, and a gripping portion that is slidable and lockable further upward than the handrail body. If the evacuee's grip portion is extended above the lower berth of the vehicle, the passenger standing at the evacuation port can grasp the grip portion and start evacuation action.
Although the handrail mechanism rises substantially perpendicular to the ladder body and is bulky, it is preferable that the handrail mechanism is stored compactly during storage. Therefore, the handrail mechanism can rotate with respect to the cylindrical column, and can be deployed in a substantially right angle direction with the ladder body when in use, and can be rotated and stored toward the ladder body when not in use. It is preferable that

Next, I will describe how to make a treadle.
If the angle applied to the escape door of the evacuation ladder is variable, the angle of the treadle with respect to the column of the ladder body varies. Therefore, it is preferable to devise so that the upper surface of the tread bar can be easily stepped on regardless of the angle of the evacuation ladder with respect to the evacuation port. Therefore, the step width of the step rail is longer than the width of the cylindrical column of the ladder body and has a structure that protrudes forward, and the upper surface of the step rail has a curved surface that gradually falls forward. To do. If the step pier is curved in this way, a part of the step pedestal will be kept close to the horizontal regardless of the angle of the evacuation ladder with respect to the evacuation exit, making it easy to secure a foothold.

Next, a device for storage will be described.
The ladder for evacuation of the present invention extends from the evacuation exit toward the road surface outside the vehicle, and the ladder main body is extended, and the ladder basic members of each stage are temporarily fixed by the lock mechanism. It is sufficient that the lock mechanism can be easily removed. However, there are two cylindrical struts on the left and right, and it is necessary to unlock them simultaneously. Therefore, the evacuation ladder according to the present invention has a structure in which both ends are provided with wires connected to the lock mechanism for the left and right cylindrical struts in the ladder basic member, and the lock mechanism is locked at both ends by pulling the wires. It is assumed that a lock release unit that can simultaneously release is provided. By providing the lock release portion, the lock mechanism can be easily released by pulling the wire.

According to the evacuation ladder of the present invention, it is provided with a latch for latching the ladder main body to the lower beam of the vehicle's evacuation port, and the fitting member in which the hook and the lower beam of the evacuation port are interposed as a wedge. It can be easily fitted if the latching tool is fitted to the lower beam of the evacuation port from above, but the angle of the wedge surface of the fitting member changes at that time, and as a result, the lower frame of the latching device and the evacuation port is changed. It functions as a wedge against the other, and it is easy for the latch and the lower rail of the evacuation exit to slip.
In addition, the telescopic mechanism includes a handrail mechanism and a grip portion extending upward, which can contribute to ensuring the safety of an evacuating passenger.
In addition, by making the upper surface of the step pedestal into a curved surface, a part of the step pedestal is kept near horizontal regardless of the angle of the evacuation ladder with respect to the evacuation port, and it is easy to secure a scaffold.

Hereinafter, embodiments of the escape ladder according to the present invention will be described with reference to the drawings.
It goes without saying that the scope of the present invention is not limited to the specific shape, design, number, angle, etc. shown in the following embodiments.

  FIG. 1 and FIG. 2 are diagrams schematically illustrating a configuration example of the escape ladder 100 according to the first embodiment. FIG. 1A is a front view of the extended escape ladder 100, and FIG. 1B is a rear view thereof. 2A is a right side view, FIG. 2B is the left side view, FIG. 2C is the plan view, and FIG. 2D is the bottom view.

As shown in FIGS. 1 and 2, the evacuation ladder 100 of the present invention includes an extendable ladder main body 110, a ladder basic member 120 constituting the ladder main body 110, a latch 130, a handrail mechanism 140, a grip Part 150 is provided.
The ladder main body 110 is of a telescopic type and is a combination of a plurality of ladder basic members 120 as a basic unit. In this configuration example, the ladder basic member 120 of the basic unit is configured in five stages, but in this configuration example, a step bar 122 (to be described later) is not provided in the uppermost stage, and a hook 130 is provided. Yes. Further, the ladder basic member 120 of the lowest basic unit is provided with two step bars 122, which will be described later, in the upper part and the middle part.

FIG. 3 shows a ladder basic member 120 that is a basic unit.
As shown in FIG. 3, the ladder basic member 120 includes a pair of cylindrical support columns 121 arranged in parallel with each other at a predetermined interval, and a step frame that is horizontally mounted between the upper ends of the cylindrical support columns. 122 is provided. The ladder basic member 120 serving as the basic unit is used as one stage of the ladder, and by combining a plurality of ladders, a ladder in which multistage step bars are continuous is obtained.

  Here, in this configuration example, the top surface shape of the tread bar 122 is devised. The shape of the upper surface of the step bar 122 protrudes forward in the depth direction, that is, the step width is longer than the width of the cylindrical column body 121 of the ladder main body 110, and the upper surface of the step bar 122 gently descends toward the front. It has a curved surface. When the upper surface of the step bar 122 is curved in this way, as will be described later, regardless of the angle applied to the lower part of the vehicle escape port of the evacuation ladder 100, the upper surface of the step bar 122 is horizontal. As a result, an area that is easy for an evacuee to step on, including the horizontal part and its front and back areas, is obtained.

The ladder basic member 120 is formed of a light metal material such as aluminum.
Each ladder basic member 120 needs to have a certain degree of rigidity and strength. This is because the ladder basic member 120 is required to have mechanical strength as an evacuation ladder for supporting elevating and lowering the evacuee at an emergency evacuation point.

  Note that a latch 130, which will be described later, is provided on the cylindrical column 121 of the uppermost ladder basic member 120. Further, in this configuration example, the gripping portion 150 is extended so that the height of the cylindrical column 121 of the uppermost ladder basic member 120 is higher than the position of the hook 130. In this way, if the grip 150 is extended with the cylindrical column 121 of the uppermost ladder basic member 120 facing upward, the safety of the refugee is ensured if the refugee can grip the grip 150 during evacuation. There is a merit that it becomes easy.

Next, how to combine the ladder basic members 120 will be described.
As shown in FIG. 1, each ladder basic member 120 has a cylindrical portion of the cylindrical columnar body 121 that sequentially increases in size from the uppermost ladder basic member 120 to the lowermost ladder basic member 120. These ladder basic members 120 are sequentially connected so as to be slidable in the cylinder axis direction of the cylindrical column body 121. In this way, the lower ladder basic member 120 located immediately below the upper ladder basic member 120 has a cylindrical portion of the cylindrical column body 121 that is slightly larger in size than the upper ladder basic member 120. The cylindrical portion of the cylindrical column 121 of the member 120 can be slid into and out of the cylindrical column 121 of the lower ladder basic member 120, and is shortened by being pushed in. It becomes an extended state by pulling out. When all the ladder basic members 120 at each stage are in the shortened state, the entire evacuation ladder 100 is in the shortened storage state, and when all the ladder basic members 120 at each stage are in the extended state, the entire evacuation ladder 100 is also in the extended state. Become.

  Here, the ladder basic member 120 at each stage has a lock mechanism that temporarily fixes the ladder basic member 120 in a state where the ladder basic member 120 at each stage is in an extended state at the connecting portion between the ladder basic members 120. I have.

  FIG. 4 is a diagram simply showing the operation of the locking mechanism of the joining portion of the ladder basic member 120 when the escape ladder 100 is deployed. As shown in FIG. 4, a pair of engaging pins 124 are provided so as to protrude inside the sliding cylindrical column body 121, and a through hole 125 is formed in a part of the cylindrical column body 121. Is formed. Thus, the engaging pin 124 protrudes and is formed so as to be inserted into the through hole 125. As shown in FIG. 4A, the locking pin 124 is urged by the spring 126 so as to protrude toward the through hole 125. Further, a wire 123 is attached to the locking pin 124, and as will be described later, when the lock mechanism is opened, the locking pin 124 biased by the spring 126 is returned by pulling the wire 123. It is a mechanism that can.

  As shown in FIG. 4A, when the ladder basic member 120 falls downward, when the tip of the locking pin 124 reaches the through-hole 125, the spring 126 is moved as shown in FIG. The locking pin 124 protrudes by the urging force and is fitted into the through hole 125. Therefore, as shown in FIG. 4B, when the locking pin 124 comes to a position where the through hole 125 is located, the locking pin 124 protrudes by the bias of the spring 126, and the tip fits into the through hole 125. The ladder basic member 120 is temporarily fixed in the extended state.

Further, the evacuation ladder 100 of the present invention includes a lock release portion that can release the lock state of the lock mechanism at the joint portion of the ladder basic member 120 during storage.
FIG. 5 is a diagram simply showing an operation of releasing the locking mechanism of the joining portion of the ladder basic member 120 when the escape ladder 100 is stored.
As the unlocking portion, there are provided wires 123 having both ends connected to the left and right locking pins 124 of the ladder basic member, respectively, and by pulling the wire 123 as shown in FIG. Each of the stop pins 124 can be pulled back, and the lock mechanism can be unlocked at the same time. If the locking mechanism is released in a state where the evacuation ladder 100 of the present invention is unfolded and is in contact with the road surface, the upper ladder basic member 120 becomes the lower ladder basic member 120 as shown in FIG. It slides toward and shrinks. By pulling the wire 123 at each stage, the whole can be contracted if the unlocking at each stage is released one after another.

FIG. 6 is a diagram illustrating a state where the evacuation ladder 100 according to the first embodiment is stored. 6 (a) is a front view of the evacuation ladder 100 in the stowed state, FIG. 6 (b) is a rear view thereof, FIG. 6 (c) is a right side view thereof, FIG. 6 (d) is a left side view thereof, and FIG. e) is a plan view thereof, and FIG. 6F is a bottom view thereof. The lowest ladder basic member is shown as 120L. By pulling the wire 123 of each step, the cylindrical support body 121 of the ladder basic member 120 whose lock mechanism is released slides, enters the inside with respect to the lowermost ladder basic member 120L, and enters the housed state. ing.
As shown in FIG. 6, since the bottom ladder member 120L is provided with two step bars 122 at the upper end surface and the center and slightly below, the bottom step bar 122 is slightly lower in the retracted state. It is in a separated state.

Next, the latch 130 will be described.
The latch 130 is a member that latches the ladder body 110 in order to suspend it from an evacuation port of a railway vehicle or the like.
The shape of the latch 130 is not particularly limited as long as it is easy to hang. However, in this configuration example, a U-shape is used, and a structure that can be fitted from above into the lower rail of an evacuation exit of a railway vehicle or the like. I am doing.

  In this configuration example, as shown in FIG. 7, the hook 130 includes a hook portion 131, a fitting member 132, and an elastic body 133.

The hook 131 is a U-shaped member that is hooked on a lower rail of the vehicle's escape port. In this configuration example, the depth D1 of the inner wall surface of the U-shaped cutout portion is slightly larger than the width D2 in the depth direction of the lower rail of the vehicle escape port. As will be described later, the fitting member 132 is fitted into the gap between the depth D1 of the inner wall surface of the U-shaped cutout portion and the width D2 in the depth direction of the lower rail of the vehicle escape port. It becomes.
Since the hook 131 is a member that suspends the entire escape ladder 100, it needs to have a suitable strength. For example, it is assumed that the stainless steel material has sufficient strength to sufficiently support the weight of the ladder main body 110 and the weight of the refugee during evacuation.

Next, in this configuration example, as shown in FIG. 7B, the latch 130 is devised to be rotatable with respect to the cylindrical support column 121.
FIG. 7B is a view for explaining the movement of the latch 130 rotating with respect to the cylindrical support 121. The angle at which the evacuation ladder 100 is hung with respect to the evacuation exit may need to be dynamically changed depending on the road surface condition of the stop position of the railway vehicle stopped in an emergency. In order to freely adjust the connection angle between the evacuation port and the evacuation ladder 100 of the present invention, the hook 130 is attached to the cylindrical column 121 so as to be rotatable in a vertical plane via a rotation shaft. Thus, regardless of the inclination angle of the ladder body 110 with respect to the vehicle exit, the latch 130 can be fitted to the lower rail.

Next, the fitting member 132 is a member that fits into a gap generated on the inner wall surface of the hook portion 131 that has received the lower rail of the vehicle escape port. As described above, the fitting member 132 has a depth width D <b> 2 that is substantially equal to the gap generated on the inner wall surface of the hook 131, and has a wedge surface with respect to the surface facing the lower rail.
The fitting member 132 rotates in a vertical plane around a rotation shaft (not shown), and is supported by being urged by an elastic portion 133. The elastic body 133 is attached between the upper surface of the inner wall of the hook portion 131 and the upper surface of the fitting member 132, and as described above, the angle of the wedge surface of the fitting member 132 is variable. That is, the angle of the wedge surface of the fitting member 132 is variably attached by a rotation shaft (not shown) and the elastic body 133.

FIG. 8 shows that the lower beam of the escape port of the vehicle is received, the angle of the wedge surface of the fitting member 132 varies, and the fitting member is placed between the side surface of the lower beam of the vehicle's escape port and the side wall surface of the hook portion 131. It is a figure which shows that 132 fits and the wedge surface becomes a wedge.
The state of FIG. 8A shows the fitting member 132 in a state of being urged by the elastic portion 133. In this state, the latching tool 130 is hung from above toward the lower berth of the vehicle.
As shown in FIG. 8 (b), when the hook 130 is hooked on the lower rail of the vehicle's evacuation exit, the wedge surface of the fitting member 132 is engaged with the opposite surface of the lower rail, The fitting member 132 serves as a wedge interposed between the inner wall surface of the latching tool 130 and the lower rail of the vehicle escape port.
When the state shown in FIG. 8B is reached, the angle at which the fitting member 132 fits in between the lower rail of the vehicle's evacuation port without any gap and the wedge surface abuts the surface of the lower lane of the vehicle's evacuation port. Thus, the latch 130 can be prevented from coming off upward.

Next, the handrail mechanism 140 and the grip part 150 will be described.
The handrail mechanism 140 is attached along either or both of the cylindrical support bodies on the left and right of the ladder body 110, and can be gripped when the evacuees evacuate.
In this configuration example, the handrail mechanism 140 can be expanded and contracted according to the expansion and contraction of the ladder body 110. The handrail mechanism 140 includes two or more cylindrical bodies 141 that are sequentially connected so as to be slidable, and at least the cylindrical support pillars of the uppermost ladder basic member and the cylindrical support pillars of the lowermost ladder basic member. It is connected to the body via a connecting member 142 having a predetermined length. In this configuration example, there are three upper and lower cylindrical bodies 141, one connecting member 142 is located near the upper end of the uppermost cylindrical body 141, and the lower part of the lowermost cylindrical body 141. There are two connecting members 142.

Since the cylindrical body 141 is slidably connected sequentially and is attached to the cylindrical support body of the ladder main body 110 via the connecting material 142, from the extended state of FIG. 1 and FIG. As shown in FIG. 6 in the change to the storage state, it is configured to expand and contract in accordance with the expansion and contraction of the ladder main body 110. In the storage body of FIG. 6, the uppermost tubular body 141 and the second tubular body 141 slide into the inner portion of the lowermost tubular body 141. Yes.
Further, in this configuration example, the handrail mechanism 140 is configured to be rotatable with respect to the cylindrical column body 121 of the ladder body 110. Although the structure to rotate is not specifically limited, In this structural example, the connection part with the connection material 142 is rotatable.

FIG. 9 is a diagram illustrating a state in which the handrail mechanism 140 is rotated with respect to the ladder main body 110.
9A is a diagram shown in a plan view, FIG. 9B is a diagram shown in a front view, and FIG. 9C is a diagram shown in a right side view. 9A is easy to understand in a plan view, the handrail mechanism 140 moves together with the rotation of the connecting member 142 together with the grip 150, and is at a right angle with respect to the ladder main body 110 (shown by a dotted line in the figure). And a position folded with respect to the ladder body 110 (shown by a solid line in the figure). Note that it is necessary to limit the rotation angle so that it does not extend beyond the position perpendicular to the ladder body 110 (that is, it does not open more than 90 degrees).

  Thus, if the handrail mechanism 140 can be rotated with respect to the cylindrical support body 121 of the ladder main body 110, the handrail mechanism 140 can be deployed in a substantially perpendicular direction with respect to the ladder main body 100 when the escape ladder 100 is used. Evacuees are easy to grip and can be compactly accommodated by turning the handrail mechanism 140 toward the ladder body 110 when not in use.

  Here, the length of the connecting member 142 is designed so as to leave a predetermined distance from the cylindrical column of the ladder body 110 so that the evacuees can easily grasp the handrail mechanism 140. In this example, since the handrail mechanism 140 has a structure that can rotate with respect to the cylindrical support body of the ladder main body 110, the length of the connecting member 142 is preferably substantially equal to the lateral width of the ladder main body 110. If the length of the connecting material 142 is substantially equal to the lateral width of the ladder body 110, the whole can be stored compactly.

  Next, in this configuration example, the handrail mechanism 140 includes a handrail main body that expands and contracts in conjunction with the expansion and contraction of the ladder main body 110, and a grip portion 150 that is slidably connected upward and lockable. . In order to hang the latch 130 on the lower rail of the vehicle evacuation exit, the vicinity of the upper end of the ladder body 110 is located near the evacuee's feet. When evacuating, there is nothing to grip and it is not stable to step toward the stepping foot at the foot, and it may fall if the refugee steps off the stepping foot. Therefore, the gripping unit 150 is extended upward so that the refugee can grip it.

  1 and 2, the upper end of the ladder main body 110 and the upper end of the handrail mechanism 140 are located near the position of the latch 130 so that it can be easily understood by looking at the evacuation ladder 100 in the extended state of FIGS. Is seen to extend further upward from the upper end of the handrail mechanism 140. In this way, when the escape ladder 100 is used, the gripping portion 150 is positioned highest, and when the hook 130 is hung near the lower pier of the evacuation exit, the gripping portion 150 is located near the thigh or waist of the refugee standing at the evacuation exit It can be located at a height.

Next, a procedure for using the escape ladder 100 of the present invention will be described with reference to FIGS. 10 and 11.
FIG. 10 is a diagram illustrating a procedure for using the evacuation ladder 100 of the present invention.
In an emergency, the driver of the leading vehicle and the conductor of the trailing vehicle open the evacuation port, take out the evacuation ladder 100 of the present invention from the installation location, and evacuate with the front facing the outside of the vehicle and the back facing the vehicle. While going out of the mouth, it is hung on the lower pedestal of the evacuation exit so as to cover the stopper 130 from above. The lower pier of the evacuation exit may be a rail pier if the evacuation exit has a sliding door structure, or a lower pier that appears when the hatch is opened.
FIG. 10 shows a state in which the evacuation ladder 100 is hung on the lower rail of the evacuation opening via the hook 130. The evacuation ladder 100 is in a shortened storage state.
At this time, if the lower ladder basic member 120 is supported and lifted, the evacuation ladder 100 can be maintained in a shortened storage state inside the building, so that it becomes easy to handle.

  Next, as shown in FIG. 11, when the evacuees let go of the evacuation ladder 100, the ladder basic members 120 at each stage fall one after another due to their own weight, and the ladder basic members 120 are extended. At that time, if the locking pin 124 comes to the position where the through hole 125 is located in the ladder basic member 120 at each stage, the locking pin 124 protrudes by the bias of the spring 126, and the tip fits into the through hole 125. The ladder basic member 120 is temporarily fixed in the extended state.

FIG. 10 is a diagram illustrating a state in which the evacuation ladder 100 reaches the road surface outside the vehicle and is deployed from the lower rail of the evacuation exit via the hook 130.
The length of the escape ladder 100 is preferably long enough to reach the road surface outside the vehicle as shown in FIG.

  Here, the angle applied to the evacuation opening of the evacuation ladder 100 may vary somewhat depending on the throwing angle and momentum when letting it go downward, but the step width of the tread bar 122 is greater than the width of the cylindrical column of the ladder body. Because it is long forward and the upper surface is curved, a part of the step rail is kept close to the horizontal regardless of the angle at which the evacuation ladder 100 is hooked with respect to the evacuation exit, and it is easy to secure a scaffold. It has become a thing. If the curved surface is gentle with respect to the sole, the tread bar 122 is not difficult to step on. Rather, the foot is landed on the tread bar 122 and the weight is smoothly moved toward the upper surface of the next lower step bar 122. Makes it easier to move forward.

  If the railway vehicle is a subway, the evacuation site may be dark. Moreover, even if it is a ground train, the emergency evacuation time zone is not limited to the daytime zone and may be a nighttime zone. In addition, there may be a situation where the visibility is deteriorated due to smoke in a fire. It is assumed that the use of the evacuation ladder 100 in a situation where the field of view is poor makes it difficult for the evacuees to feel uneasy because the step cannot be confirmed sufficiently. Therefore, in the evacuation ladder 100 of the present invention, a configuration example in which the outline of the evacuation ladder can be easily visually recognized is also possible.

  Therefore, in the ladder basic member 120, there is a contrivance in which an LED illuminating body is embedded in part of the cylindrical support column 121 and the step bar 122. In addition, there is a contrivance in which a fluorescent paint is applied to a part of the cylindrical column body 121 and the step bar 122. Thus, if the LED illuminating body is embedded in the cylindrical support column 121 and the step bar 122, the outline of the ladder main body 110 such as the position of the cylindrical support column 121 and the position of the step column 122 of each stage can be visually confirmed. It becomes easy.

It is necessary to supply electric power for lighting the LED illuminating body, but it is an emergency evacuation using the evacuation ladder 100, and there is no time to connect cables to the electric equipment in order to obtain electric power from the electric equipment of the building. In addition, the electrical equipment in the building may become unusable during a fire.
Therefore, it is preferable to supply power from a battery mounted on a part of the evacuation ladder 100 for lighting the LED illuminator. Since the evacuation ladder 100 is used only in an emergency, it is preferable that the LED illuminator is turned off during normal operation and is turned on when the evacuation ladder 100 is used in an emergency.

Here, the following configuration is conceivable as a method for controlling on / off of the LED illumination body of the escape ladder 100.
The on / off control method of the first LED illumination body is a method of providing an operation unit such as a switch or a button for switching on / off of the LED illumination body. In this case, if the evacuee determines that the LED illuminating body needs to be turned on according to the surrounding situation, the evacuee operates the operation unit to light the LED illuminating body.

  The on / off control method of the second LED illumination body is a method using an automatic lighting mechanism. Here, the automatic lighting mechanism links the lighting of the LED illuminating body with the mechanism that detects that the ladder basic members 120 in the ladder basic member 110 are in an extended use state by sliding. If it is detected that the ladder 100 is in the extended use state, the LED illumination body is automatically turned on.

  The mechanism for detecting that the evacuation ladder 100 is in the extended use state is not particularly limited. For example, a structure interlocked with a lock mechanism that operates when the evacuation ladder 100 is in the extended use state can be considered. As in the first embodiment, the locking mechanism has a movement in which the engaging pin 124 protrudes and fits into the through hole 125. However, if the protruding operation of the engaging pin 124 and the lighting switch of the LED lighting body are linked, The LED illuminator is turned on when the evacuation ladder 100 is in the extended use state. That is, in the operation of the locking mechanism shown in FIGS. 4 and 5, when the locking pin 124 of the locking mechanism is in the biased state, the power supply from the battery to the LED lighting body is turned off, and the biasing is released and locked. In this configuration, the power supply from the battery to the LED illumination body is turned on in accordance with the insertion movement of the pin 124.

  Although the preferred embodiments of the present invention have been illustrated and described above, it will be understood that various modifications can be made without departing from the technical scope of the present invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims for utility model registration.

  The evacuation ladder of the present invention can be widely applied as an evacuation ladder equipped on a vehicle used when a passenger escapes from the vehicle and evacuates in an abnormal situation of a train vehicle.

It is FIG. (1) which shows the example of 1 structure of the escape ladder 100 concerning an Example. It is FIG. (2) which shows the example of 1 structure of the escape ladder 100 concerning an Example. It is the figure which took out and showed the ladder basic member 120 used as 1 unit. FIG. 6 is a diagram (No. 1) simply showing a configuration example of a locking mechanism of a joining portion of a ladder basic member 120; FIG. 6 is a second diagram illustrating a configuration example of a locking mechanism of a joining portion of a ladder basic member 120. It is a figure which shows simply the evacuation ladder 100 of the shortened stowed state which the ladder basic member 120 of each step | paragraph slide-contracted. It is a figure explaining the movement which the latching tool 130 rotates in a vertical surface with respect to the cylindrical support body 121. FIG. It is a figure which shows the state which the latching member 130 was hung on the lower pedestal of the vehicle's evacuation exit, and the fitting member 132 was fitted between the side surfaces of the lower evacuation exit of the vehicle. It is a figure explaining the movement in which the handrail mechanism 140 rotates with respect to the cylindrical support | pillar body 121 in a horizontal surface. It is FIG. (1) explaining the procedure which uses the escape ladder 100 of this invention. It is FIG. (2) explaining the procedure which uses the escape ladder 100 of this invention. It is a figure which shows the conventional escape ladder of Unexamined-Japanese-Patent No. 2001-315640. It is a figure which shows the conventional escape ladder of Unexamined-Japanese-Patent No. 2002-187546.

DESCRIPTION OF SYMBOLS 100 Evacuation ladder 110 Ladder main body 120 Ladder basic member 121 Cylindrical support body 122 Step bar 123 Wire 124 Engagement pin 125 Through-hole 126 Spring 130 Latching tool 140 Handrail mechanism 150 Grasping part

Claims (8)

A basic unit is a ladder basic member provided with a pair of cylindrical struts arranged in parallel with each other at a predetermined interval and a step bar horizontally placed between the upper ends of the cylindrical struts,
From the ladder basic member at the uppermost stage to the ladder basic member at the lowermost stage, the adjacent ladder basic members are sequentially connected so as to be slidable in the cylinder axis direction of the cylindrical column body, and the ladder basic member is connected to the ladder basic member. A retractable and retractable retractable main body, and an extendable ladder body having an extended use state in which the ladder basic member is slid and extended,
A latch for latching the ladder body to a lower pedestal of the vehicle,
A lock mechanism that temporarily fixes the ladder basic members to each other when the ladder basic members slide and is in the extended use state,
An escape ladder that can be suspended to the ground outside the vehicle when the suspension main body extends downward and the extended ladder main body is extended downward when suspended from an undercarriage of the vehicle via the hook. The hook is approximately between a U-shaped hook portion that hooks on a lower rail of the vehicle's evacuation port, and a gap formed on an inner wall surface of the hook portion that receives the lower rail of the evacuation port of the vehicle. A fitting member having an equal depth width, having a wedge surface facing the lower beam, and an angle of the wedge surface being variably attached; an upper surface of the inner wall of the hook portion; and an upper surface of the fitting member An elastic body that is attached between and makes the angle of the wedge surface variable;
When the latching tool is latched on the lower beam of the vehicle evacuation port, the wedge surface of the fitting member is engaged with the opposite surface of the lower beam, and the fitting member is the latching tool. The escape ladder according to claim 1, wherein the escape ladder is a wedge interposed between an inner wall surface and the lower rail.   The latch has a structure that can be rotated in a vertical plane with respect to the cylindrical support column, and the latch is mounted regardless of the inclination angle of the ladder body with respect to the escape port of the vehicle. The escape ladder according to claim 1, wherein the escape ladder can be fitted to the lower rail.   Two or more cylindrical bodies sequentially connected in a slidable manner, and at least with respect to the cylindrical strut body of the uppermost ladder basic member and the cylindrical strut body of the lowermost ladder basic member, A handrail mechanism connected via a connecting member having a predetermined length and combined to expand and contract in accordance with expansion and contraction of the ladder body is provided in either or both of the left and right support columns of the ladder body. Item 4. The escape ladder according to any one of items 1 to 3.   In addition to the handrail body that expands and contracts in conjunction with the expansion and contraction of the ladder body, the handrail mechanism includes a gripping portion that is slidable and lockable further upward than the handrail body. The evacuation ladder according to any one of claims 1 to 4, wherein a grip portion of the refugee can be extended above the lower rail of the evacuation exit.   The handrail mechanism is rotatable with respect to the cylindrical column body, and can be deployed in a substantially perpendicular direction with respect to the ladder body when in use, and can be rotated and stored toward the ladder body when not in use. The escape ladder according to any one of claims 1 to 5, wherein the escape ladder is capable of being performed.   The step width of the step bar is longer than the width of the cylindrical column of the ladder body, and the upper surface of the step bar is a curved surface that gently descends toward the front. The escape ladder according to any one of claims 1 to 6.   Both ends have wires connected to the lock mechanism for the cylindrical struts on the left and right sides of the ladder basic member, and both ends have lock release portions that can simultaneously release the lock state of the lock mechanism. The escape ladder according to any one of claims 1 to 7, characterized in that