JPH0243799Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an emergency escape device installed near the emergency door of a bus.

(Prior Art) As a recent trend, buses, especially tour buses, have cabin floors raised above the ground in order to widen the field of vision for passengers, and double-decker buses have cabin floors on the second floor. It is necessarily located high above the ground. If the cabin floor is set at a high position in this way, the emergency exit becomes high, and escaping through the emergency exit in an emergency poses a danger, especially for children, the elderly, and women. For this reason, rope ladders and folding ladders have been installed near emergency exits, and bifold ladders have been installed inside the emergency doors (cabin side), and double-decker buses are now required to have escape ladders installed. It became.

However, the above-mentioned conventional rope ladders and folding ladders that are installed are simply fixed at one end to the vehicle body, and after the crew members and passengers open the emergency door, they can move the rope ladder or folding ladder out of the way. The operation of extending a bifold ladder downward is not a quick or easy operation in an emergency, and the operation of extending a bifold ladder downward is not a quick or easy operation in an emergency. It is extremely dangerous to release or extend a ladder at an emergency exit at such a high position, and there is a possibility that the crew members and passengers performing the work may fall. Regarding the ease of getting in and out of an emergency exit, Japanese Utility Model Application No. 57-142629 discloses an emergency door having a retractable step.

(Purpose of the invention) The present invention was created by taking into account the above-mentioned disadvantages of the conventional technology. The purpose is to provide an emergency escape device.

(Structure of the invention) The present invention was made to achieve the above purpose.
A folding ladder is made up of a plurality of steps connected by a collapsible connecting member, and the uppermost step is connected to the vehicle body via a chain, and the folding ladder is provided at right angles behind the tread of the uppermost step, and the folding ladder has a drawer. a base that guides a plurality of parallel steps in the ejection direction when the ladder is in an upright state; and a push rod that is pivotally connected to the vehicle body and is rotatable in the ejection direction of the folding ladder and that is latched to the uppermost step. and an arm that pushes out the folding ladder as it rotates, and by rotating the arm outward, the base is tilted outward, and this tilting A plurality of steps are ejected outward by sliding on the base, and the connecting member is extended to form a ladder on the side wall of the vehicle body.

(Example) Next, the present invention will be described in detail based on an example shown in FIGS. 1 to 5.

An emergency exit is opened at the rear of the side wall of the bus body, and an emergency door 1 is installed. As shown in FIG. 1, a storage chamber 2 with open sides is formed at the bottom of the emergency exit. It's covered. 3 in the figure is an escape device stored in the storage chamber 2, and the escape device 3 has six steps 40, 4.
1, 42, 43, 44, 45; a pair of arms 5, 5' pivotally attached to the bottom surface of the storage chamber with an interval equal to or larger than the step width in the vehicle length direction; It consists of a push rod 6 spanning a pair of arms 5, 5', and a base 7 provided at the topmost step 40 of the folding ladder 4.

Steps 40, ..., 45 of the above folding ladder 4
consists of a prismatic foothold bar a and a footboard b, and the foothold bars a are connected to each other by a foldable connecting member 9. As shown in FIG. 4, the footboard b is provided at right angles to the connecting member 9 so as to come into contact with the side wall or the rear wheel when the folding ladder 4 is pulled out, and prevents the swinging of the steps. It helps prevent this and gives you a good foothold. Furthermore, the topmost step 40 has the end of the footrest a connected to the end of the compartment floor f side in the upper part of the storage chamber 2 via a chain 8, and the side end of the footboard b (the back side in the stepping direction). A base 7 is fixed to the base 7 at right angles to the footboard b.

The base 7 is located on the bottom surface of the storage chamber 2 when the folding ladder 4 is stored, and when the connecting member 9 is folded, each step 40, . They are provided so as to stand side by side on the base 7 in close proximity.

As described above, the pair of arms 5 and 5' are spaced apart by a distance equal to or larger than the width of the step so that the folding ladder 4 in the folded state can move, and are rotatable in the vehicle width direction so that the folding ladder 4 can move freely. It is pivoted to the bottom of the.
Further, as shown in FIG. 5, the free ends 50, 50' of the arms 5, 5' are connected by a stay c, so that the arms 5, 5' move together. Furthermore, the push rod 6 spanned between the arms 5 and 5' is
Top step 4 of folding ladder 4 in retracted state
0, and its end is pivotally supported by a stay d provided between the arms 5 and 5' near the stay c.

To release the folding ladder using the escape device described above, first remove the cover e covering the space between the emergency door 1 and the compartment floor f, then open the emergency door 1, and then use the arms 5, 5' or the stay Simply push the arms 5, 5' outward with your hands or feet to rotate the arms 5, 5' outward and collapse them. Arm 5,
5' rotates outward, the push rod 6 pushes the folding ladder 4 outward while pulling up the highest step 40, and when the base 7 tilts, the steps 41, . . . , 45 are guided by the base 7. As it does so, it slides outward. Since the steps 41, . . . , 45 slide down when the base 7 is tilted, they will fall in a parabola at a point away from the side wall and will not damage the outer panel. The force of the sliding steps 41, . . . , 45 causes the connecting member 9 to expand, forming a ladder on the side wall below the emergency exit.

To store the folding ladder 4 that has been pulled out, after vertically pulling up the arms 5, 5', the connecting member 9
The steps 41, .
The folding ladder 4 returns to the release standby state. Then, the emergency door 1 is closed and the cover e is attached.

(Effect of the invention) Therefore, according to the invention, by rotating the arm outward, the folding ladder in the folded and stored state on the base tilts and slides on the base due to its own weight. It is easy to release the folding ladder in an emergency because it is released outward while
A ladder can be quickly formed at the bottom of the emergency exit. In addition, at the emergency exit where the emergency door is left open, all you have to do is push the arm with your hand or foot, which eliminates the risk of crew members and passengers falling during the release operation, which has excellent practical effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the retracted state of the folding ladder in an embodiment of the emergency escape device for buses according to the present invention, FIG. FIG. 4 is a sectional view taken along line AA in FIG. 3, and FIG. 5 is a sectional view taken along line BB in FIG. 3. 3...Escape device, 4...Folding ladder, 5,5'
... Arm, 6 ... Push rod, 7 ... Base, 8 ... Chain, 9 ... Connection member.

Claims (1)

[Scope of utility model registration request] A folding ladder consisting of a plurality of steps connected by a collapsible connecting member, the uppermost step of which is connected to the vehicle body via a chain, and a folding ladder provided at right angles behind the tread of the uppermost step, and a drawer of the folding ladder. a base that guides a plurality of parallel steps in the ejection direction when the ladder is in an upright state; and a push rod that is pivotally connected at one end to the vehicle body so as to be rotatable in the ejection direction of the folding ladder and that is latched to the uppermost step. What is claimed is: 1. An emergency escape device for a bus, comprising: an arm for pushing out a folding ladder as the ladder rotates;