JPH0796049A - Airbag system for fall accident - Google Patents

Abstract

PURPOSE:To provide the airbag system for fall accident which can secure the safety of a worker when the worker falls from a high place in spite of taking conventional safety countermeasures at a civil engineering and building works site. CONSTITUTION:The airbag system for fall accident is composed of a working wear 1, airbags 2-5 arranged inside the working wear, folded and housed so as to be expanded and extended by introducing gas, fall detecting means 6 and 7 for judging the occurrence of fall by detecting the acceleration and/or speed of the worker higher than a prescribed value, and gas generating means 9 for generating the gas for airbag introduction whiel receiving signals from the fall detecting means 6 and 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag system for a crash accident, which is worn by a worker when working at a high place in a civil engineering construction site.

[0002]

2. Description of the Related Art Conventionally, at construction sites of civil engineering and construction, various measures have been taken to prevent a worker from suffering a fall accident when working at height. For example, fall guards (handrails) are installed at work points, passages, and openings where there is a risk of falling, or safety nets are installed at locations where fall guards are difficult to install. I am wearing it.

Conventionally, the above-mentioned safety belt is worn by an operator on the waist or the like, and is connected to a scaffold or the like by a lifeline to prevent a fall. Furthermore, there is also a safety belt with a built-in airbag of Japanese Patent Application No. 5-3928 in which an airbag is built by improving this safety belt. This Japanese Patent Application No. 5-3928 has a safety belt with a built-in airbag, which is used when a worker falls and a lifeline is stretched.
To prevent the safety belt from being pulled and biting into the worker's body and damaging the worker's body, an air bag is placed around the entire inner circumference of the conventional safety belt body, and this airbag is used when the worker crashes. Is what expands and develops.

[0004]

However, the above-mentioned conventional fall protection work or safety net may be difficult to install depending on the construction site. Also, in the above safety belt, if there is no suitable foothold to hook the hook, or if you forget to hook it, you cannot avoid a crash even if the safety belt has an air bag built in. . In short, the above-mentioned conventional safety measures for aerial work are to prevent the worker from falling, and are not the safety measures after the fall, but to ensure the safety of the worker once the fall occurs. Things are almost impossible.

Therefore, the present invention has been made by paying attention to the above-mentioned problems, and the purpose thereof is to prevent an operator from falling from a high place even though the conventional safety measures are taken at a civil engineering and construction site. Even if it does, it is to provide an airbag system for a crash accident that can absorb the impact at the time of a crash and ensure the safety of workers.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist thereof is to arrange work clothes and the inside of the work clothes by folding and storing the work clothes by introducing gas. An air bag that is inflated and deployed, a crash detection unit that detects the acceleration and / or speed of a worker to determine whether or not a crash has occurred, and a gas for introducing the air bag is generated in response to a signal from the crash detection unit. It is in an airbag system for a crash with a gas generating means.

[0007]

In the airbag system for a crash according to the present invention, when a worker crashes from a high place, the crash detection means detects the acceleration and / or speed at that time to judge whether or not the crash occurs.
Send a signal to the gas generating means. The gas generating means receiving the signal generates gas and introduces the gas into the airbag to inflate and deploy the airbag. In this way, the airbag is inflated and deployed before the worker collides with the ground or the roof below, and absorbs the impact at the time of collision to prevent the worker's body from being seriously injured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an airbag system for a crash according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 (a) is a front view of a worker wearing a work clothes equipped with the airbag system for a crash according to the present invention in a normal state, and FIG. 1 (b) is a front view of FIG. 1 (a). It is a side view when the airbag for a crash accident is inflated, and FIG. 1 (c) is a partial cross-sectional side view of FIG. 1 (b). The airbag system for a crash according to the present invention is arranged at positions such as the work clothes 1 and the collar, chest, back and legs inside the work clothes 1, folded and stored, and inflated and expanded by the introduction of gas. The head airbag 2, the chest airbag 3, the back airbag 4, the foot airbag 5, and the chest of the work clothes 1 are arranged on the chest of the work clothes 1, and the acceleration and speed of the worker are constantly detected to judge whether or not the vehicle crashes. The accelerometer 6, the speedometer 7, and the control device 10 (see FIG. 2) as the crash detection means, which are arranged on the chest and below the knees of the work clothes 1, receive the signal from the control device to supply the gas for introducing the airbag. A main part is composed of a gas generating device 9 as a gas generating means for generating the gas.
There are a communicating pipe (not shown) communicating with 3, 4, and 5, and a switch lamp 8 which is arranged on the chest of the work clothes 1 and is turned on when the control device is switched on.

Here, the head airbag 2 housed in the collar portion of the work clothes expands and deploys into a helmet shape and covers the entire head of the worker. In FIG. 1 (c), this head is shown. In order to show the partial airbag 2 in detail, a partial cross-sectional side view showing only the head airbag 2 in the cross-section of the side view of FIG. 1B is shown. The chest airbag 3 and the back airbag cover the entire front and rear surfaces of the operator's body, and the foot airbag 5 is formed in a shape that covers the front surfaces of the legs such as the knees and the shins. .

The gas generator 9 is made of metal or FRP.
A small cylinder (not shown) formed of (fiber reinforced synthetic resin) or the like and having an opening connected to a communication pipe, and a small cylinder that is housed in the small cylinder and ignites to generate gas, such as Ca (N ₃₎ a chemical 12 such as ₂ (see FIG. 2), and a ignition device 11 for igniting the chemicals (see FIG. 2) in response to a signal from the control unit.

The control device 10 includes the airbags 2, 3, 4,
ON to prevent 5 from expanding due to malfunction
A / OFF switch 13 is provided, and this switch is turned on only when working at height. Then, the control device 10
It operates only when the N / OFF switch 13 is ON, and ignites the ignition device 11 of the gas generator 9 when the acceleration is equal to or higher than a predetermined set value and the speed is equal to or higher than the predetermined set value. Send a signal of.

Although the airbag system for a crash has both the speedometer 7 and the accelerometer 6 in this embodiment, the control device 10 may be provided with a computing device or may be provided with a computing device separately. Thus, the velocity can be calculated from the acceleration, and conversely the acceleration can also be calculated from the velocity, so that either one of the accelerometer 6 and the speedometer 7 can be omitted. In addition, the air bag 2, which is adjacent to the gas generator 9,
If 3, 4, 5 are arranged and the airbags 2, 3, 4, 5 are directly communicated with the openings of the small cylinders, the communication pipe can be omitted. Further, instead of directly arranging the airbag system for a crash accident inside the work clothes, the air bag system may be separately arranged on a vest, a knee pad, a shin pad, and the like and worn.

Next, the operation of the crash accident airbag system will be described with reference to the system configuration diagram shown in FIG. The worker turns on the ON / OFF switch 13 of the control device 10 in advance when starting work at a high place, and the work clothes 1
The switch lamp 8 on the chest is turned on. For this reason, it is possible for other workers to confirm that the ON / OFF switch of the control device 10 is ON, so that the ON / OFF switch of the control device is turned OFF during a work at a high place or a crash accident occurs. It is possible to prevent an erroneous operation such as turning on during normal work that is unlikely to occur.

When the ON / OFF switch of the control device 10 is turned on, the control device starts its operation and starts receiving signals of acceleration value and speed value from the accelerometer 6 and the speedometer 7, respectively. At this time, when the worker falls from a high place and the acceleration and the velocity become equal to or higher than the preset values, the control device 10 sends a signal to each ignition device 11. The ignition device 11 that has received the signal generates an electric spark to ignite the chemical substance 12, and the chemical substance 12 explosively generates gas due to this ignition. When this gas is introduced into each of the airbags 2, 3, 4, 5 through the communication pipe,
The airbags 2, 3, 4, 5 instantly expand and deploy as shown in FIG. 1 (b). Therefore, before the worker collides with the ground or the roof below, the worker's body is covered with the airbags 2, 3, 4, 5 over the entire area, so that the airbags 2, 3, 4, 5 collide. It is possible to prevent the operator's body from being seriously injured by absorbing the shock at the time.

[0016]

According to the airbag system for a crash according to the present invention, when a worker crashes from a high place, the airbag arranged in the work clothes expands and deploys and collides with the ground, the roof of a building below, etc. It is possible to prevent the worker's body from being seriously injured by absorbing the impact when doing.

[Brief description of drawings]

FIG. 1 (a) is a front view of a worker wearing a work clothes equipped with an airbag system for a crash according to the present invention in a normal state, and FIG. 1 (b) is FIG. 1 (a). 1 (c) is a side view when the airbag for a crash accident is inflated, and FIG.
It is a partial cross section side view of (b).

FIG. 2 is a system configuration diagram of the airbag system for a crash according to the present invention.

[Explanation of symbols]

 1 Work Wear 2 Head Airbag 3 Chest Airbag 4 Back Airbag 5 Foot Airbag 6 Accelerometer (fall detection means) 7 Speedometer (fall detection means) 9 Gas generator (gas generation means) 10 Control device ( Fall detection means) 11 Ignition device (gas generation means) 12 Chemical substance (gas generation means)

Claims (1)

[Claims] 1. A work clothes, an airbag arranged inside the work clothes, folded and stored, expanded and deployed by introduction of gas, and acceleration and / or speed of an operator to detect whether or not the vehicle crashes. An airbag system for a crash accident, comprising: crash detection means for determining whether or not there is a crash detection means; and gas generation means for receiving a signal from the crash detection means to generate gas for introducing an airbag.