JPH042814Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an emergency door device for a vehicle, and more specifically, by opening the emergency door provided at the emergency exit, the device is stored and held at the bottom of the emergency exit. The present invention relates to an emergency door device for a vehicle that is capable of automatically moving a door step to a use position.

<Prior Art> Usually, a bus is provided with a boarding gate on the left side of the front part of the vehicle body, and passengers board and exit the bus through this boarding gate. Also, according to our country's safety standards,
It is mandatory to provide emergency exits in addition to the normally used entrances and exits. Therefore, for example, in sightseeing buses, an emergency exit is often provided on the right side of the rear part of the vehicle body, and an emergency door is often attached to this emergency exit.

Incidentally, in recent years, buses have been built with higher floors or two floors, and with this, the location of emergency exits has also become higher. For this reason, various steps have been proposed in the past in order to increase the safety during emergency escape from such a high-floor bus.

For example, in the emergency door device described in Japanese Utility Model Application Publication No. 57-150050, an emergency exit floor is provided in the passenger compartment that is one step lower than the floor of the bus, and an auxiliary step is installed at the bottom of the emergency exit floor. By being rotatably attached, the auxiliary step is normally folded and rotated to form the outer panel of the bus.

However, in such conventional devices, the auxiliary steps constitute the outer panel of the vehicle body, which impairs the appearance of the bus, and furthermore, the floor surface for the emergency exit installed inside the vehicle reduces the effective floor space inside the vehicle. However, even when the emergency door is opened, the auxiliary step does not automatically move to the use position, resulting in poor operability.

On the other hand, as seen in Japanese Utility Model Application Publication No. 58-164816, a step is attached to the inner surface of the lower part of the emergency door.
Alternatively, as seen in Japanese Utility Model Application Publication No. 48-62724, by connecting the step provided below the emergency exit and the emergency door via a link, the step can be moved to the use position by opening the emergency door. There are some things that can be moved.

However, in the former case, it is still necessary to operate the emergency door and the steps in separate operations, and at the same time, it is necessary to construct a sturdy emergency door that can withstand the load of the steps, resulting in an increase in weight. There is. In addition, in the latter case, the steps cannot be used until the emergency door is fully opened, and the links are placed adjacent to the emergency escape passage, making it safe to escape. There was a problem that it was not possible to necessarily improve the quality.

<Problems to be solved by the invention> The present invention was developed in view of the above circumstances, and is designed to prevent the appearance of the vehicle from deteriorating due to the steps used in emergencies, and to open the emergency door attached to the emergency exit. To improve safety by hastening the start of evacuation in an emergency by providing an emergency door device that can automatically and reliably move a step to a use position quickly from the start.

<Means for Solving the Problems> In order to solve the above problems, the present invention provides an emergency door that extends below the floor of the vehicle, and a portion of the outside of the vehicle below the emergency exit that is covered by the extension of the emergency door. By arranging a pair of upper and lower steps on the sides and attaching these steps to the vehicle body through pivot pins, the steps can be raised between the storage position where they overlap the outside surface of the vehicle body and the use position where they extend almost horizontally. It allows for rotation. Further, an arm is provided to protrude from the rear end of the pair of steps in the direction opposite to the main body of the step, with a pivot pin in between, and the arm comes into contact with the arm when the step is laid down and rotated to a use position where the step extends almost horizontally. A stop is provided for engaging and retaining the step in the use position. A link is provided that connects the ends of the arm to interlock the pair of steps, and a spring that biases the step to fall down and rotate toward the use position, and a spring that engages the emergency door in the closed state of the emergency exit. It is characterized by the provision of a lock to hold it.

<Function> In the vehicle emergency door device configured as described above, when the emergency exit is closed, the step is rotatably held in the retracted position and covered by the emergency door that covers the emergency exit. Therefore, unlike in the past, the steps are not exposed to the outside of the vehicle body.
The appearance of the vehicle is ensured. Furthermore, since the step is disposed outside the vehicle body, the effective floor area within the vehicle interior is not reduced.

On the other hand, when the emergency door begins to open, the holding action of the emergency door in the retracted position is released, so that the step is rotated downwardly toward the use position by the biasing force of the spring. In addition, this kind of folding/rotation of the step starts when the emergency door begins to open,
After that, the operation is automatically performed by the biasing force of the spring and the weight of the step, regardless of the position of the emergency door. Therefore, even if the opening degree of the emergency exit is insufficient, the steps will not be stopped midway. Furthermore, since the pair of upper and lower steps are interlocked via links, it is possible to rotate both steps at the same time, for example, by simply biasing one step with a spring. Since the link and the like are provided in a position opposite to the main body of the step, the safety of the emergency escape passage is increased and the reliability of the emergency door device is increased.

<Examples> Examples of the present invention will be described below in detail based on the drawings.

FIG. 1 shows an embodiment in which the vehicle emergency door device according to the present invention is applied to a sightseeing bus, in which an emergency exit 1 is provided on the rear right side of the vehicle body. The emergency exit 1 is composed of a vertically long rectangular opening, and by extending the emergency door 2 attached to the emergency exit 1 downward from the lower edge (floor surface 4) of the emergency exit 1, It covers the skirt portion 3 below the emergency exit 1. 5 is a hinge to which the emergency door 2 is attached.

A pair of upper and lower steps 6 are attached to the outer surface of the vehicle body (the surface of the skirt portion 3) covered by the extension of the emergency door 2, as shown in FIGS. 2 to 4. The step 6 is attached to the frame 8 by a pivot pin 7, and is undulated about the pivot pin 7 between a storage position overlapping the outer surface of the vehicle body covered by the emergency door 2 and a use position extending almost horizontally. It allows it to rotate.

Also, step 6 is inserted across the pivot pin 7.
An arm 9 facing opposite to the main body of the step 6 is provided at the rear end side of each step 6, and the tips of both arms 9 are pivotally connected via a link 10 and a pin 11, and extend outward. Forced coil spring 12
By providing the step 6 in the case 13, the step 6 in the storage position is biased toward the use position.

Furthermore, a stopper 14 is provided at the end of the rotation locus of the arm 9, which comes into contact with the arm 9 when the step 6 is rotated to fall down to the use position, and engages and holds the step 6 in the use position.

In the emergency door device for a vehicle configured as described above, in a normal state when the emergency exit 1 is not used, the step 6 is rotated around the pivot pin 7 against the biasing force of the coil spring 12, as shown by the solid line in FIG. It is held in the upright and rotated stowed position, and the emergency exit 1
It is held in this retracted position by the pressing action of the emergency door 2 that covers it. The emergency door 2 is held in a closed state by a lock (not shown), and if the lock is released as necessary, the emergency door 2 can be opened and rotated around the sheep 5.

On the other hand, in case of an emergency using the emergency exit 1, the emergency door 2 is rotated open after the lock is released. Then, since the pressing action of the step 6 by the emergency door 2 is released, the step 6, which had been pressed and held by the emergency door 2, begins to fall down and rotate toward the use position under the biasing force of the coil spring 12. At this time, the upper and lower steps 6 are links 10
Since the steps 6 are pivotally connected via the pin 11, the pair of upper and lower steps 6 simultaneously begin to fall down and rotate toward the use position.

In this way, after the step 6 begins to fall and turn under the biasing force of the coil spring 12, the weight of the step 6 accelerates the step 6 and moves it forcefully towards the use position. At the same time as the emergency door 2 is opened, it is reliably rotated to the position of use.

Note that when the step 6 is rotated down to the use position, the arm 9 comes into contact with the stopper 14 as shown by the two-dot chain line in FIG. 4, so the step 6 is held at that position (the use position). Become. In other words, the movement in step 6 starts from the moment the emergency door 2 begins to open, and even if the emergency door 2 is not fully opened, the opening required for the movement (lodging and rotation) in step 6 is completed. When the emergency door 2 is opened to the maximum, the step 6 will automatically and reliably rotate to the operating position, and from then on, the step 6 will remain in the operating position regardless of the opening degree of the emergency door 2. In addition, the safety of escapes performed using the steps is increased.

On the other hand, when storing the step 6 held in the use position, the step 6 is rotated upright about the pivot pin 7. Then, after firmly pressing and rotating the step 6 to the retracted position against the biasing force of the coil spring 12, the emergency door 2 is rotated to close and a lock (not shown) is activated (the emergency door 2 is locked). good.

<Effects of the invention> As is clear from the above explanation, according to the invention, when the emergency exit is closed, the step is rotated and held in the retracted position by the emergency door that covers the emergency exit. Therefore, the step is not exposed to the outside of the vehicle body, and the appearance is ensured, and a reduction in effective floor area due to the provision of the step can be avoided. In addition, the step automatically begins to move toward the use position from the moment the emergency door begins to open, and from then on, regardless of the degree of opening of the emergency door, the spring force and its own weight will ensure that the step collapses to the use position. Because the step moves, even if the emergency door is not opened sufficiently, the step will not stop mid-movement. Furthermore, since the pair of upper and lower steps are interlocked via a link, it is possible to rotate both steps at the same time, for example, by simply biasing one step with a spring. Since the step is provided in a position opposite to the main body of the step, the safety of the emergency escape passage is increased, and the reliability and safety of the emergency door device can be increased.

[Brief explanation of drawings]

Fig. 1 is an external perspective view showing an embodiment in which the vehicle emergency door device according to the present invention is applied to a bus, Fig. 2 is an enlarged perspective view of the main part of Fig. 1, and Fig. 3 is the same as Fig. 2. The cross-sectional view, FIG. 4, is a vertical cross-sectional view of FIG. 2. 1...Emergency exit, 2...Emergency door, 3...Skirt portion, 4...Floor surface, 5...Hinge, 6...Step, 7...Pivot pin, 8...Frame, 9...
...Arm, 10...Link, 11...Pin, 12
...Coil spring, 14...Stoppa.

Claims (1)

[Scope of utility model registration request] An emergency door that extends below the floor of the vehicle,
A pair of upper and lower steps arranged on the outer side of the vehicle below the emergency exit covered by the extension of the emergency door, and a storage position in which these steps are superimposed on the outer side of the vehicle and a use position in which they extend almost horizontally. a pivot pin attached to the step so that it can be rotated up and down; an arm that protrudes from the rear end of the pair of steps in a direction opposite to the main body of the step across the pivot pin; a stopper that comes into contact with the arm to engage and hold the step in the use position; a link that connects the ends of the arm to interlock the pair of steps; and a link that allows the step to lie down and rotate toward the use position. An emergency door device for a vehicle, comprising: a spring that biases the emergency door; and a lock that engages and holds the emergency door in an emergency exit closed state.