KR102190761B1 - Safety apparatus for a falling worker - Google Patents

Abstract

A safety device for fall accidents is disclosed. A safety device for a fall accident may include a safety gaiters worn on a worker's leg; A wearing band that surrounds the safety leggings, forms an accommodation space between the safety leggings, and is adjustable for tightening; A tilt sensor that detects a tilt of the worker's legs; An airbag module located in the accommodation space and including an airbag coupled to the safety leggings and an ignition unit configured to inflate the airbag; A plurality of ropes connected to the safety gaiters, and folded to provide a parachute outside the airbag; And a controller for applying an ignition signal to the ignition unit when a signal is received from the tilt sensor.

Description

Safety apparatus for a falling worker

The present invention relates to a safety device for a fall accident, and more particularly, to a safety device for a fall accident that can reduce the degree of an accident of a worker falling from a high rise.

One of the major accidents in the construction industry is a worker's fall. If you fall from a lower floor, you can avoid a serious accident by wearing protective equipment, but if you fall from a higher floor, the fall victim has no way to deal with it, leading to a serious accident.

In general, a fall prevention link is provided for each worker at a construction site in order to prevent a worker from falling. However, since workers are inconvenient to loosen the ring and fasten it to another place each time they move, there are frequent cases of working without fastening the connecting ring for fall prevention, which is a factor of a major accident. In addition, in the case of the fall prevention linkage, there is a limit in which the risk of falling of an operator still exists while the link is released and connected to another place.

The present invention provides a safety device for a fall accident that can reduce the casualties of the fall accident.

The safety device for a fall accident according to the present invention includes a safety gaiters worn on the legs of a worker; A wearing band that surrounds the safety leggings, forms an accommodation space between the safety leggings, and is adjustable for tightening; A tilt sensor that detects a tilt of the worker's legs; An airbag module located in the accommodation space and including an airbag coupled to the safety leggings and an ignition unit configured to inflate the airbag; A plurality of ropes connected to the safety leggings and folded to provide a parachute outside the airbag; And a controller for applying an ignition signal to the ignition unit when a signal is received from the tilt sensor.

In addition, the inclination sensor is a sensor in which a first space and a second space are formed, and a connection flow path connecting the first space and the second space is provided with a diameter smaller than that of the first space and the second space. Vessel; A conductive fluid provided in the sensor container and movable to the first space and the second space through the connection flow path according to the inclination of the container; And a pair of lead electrodes whose ends are located in the second space.

In addition, the sensor container, protruding from the inner wall of the sensor container between the first space and the second space, and has a funnel-shaped partition wall in which the connection flow path is formed in a central region, wherein the connection flow path is the The diameter may gradually decrease from the first space to the second space.

In addition, the wearing band, a first band provided along one side of the safety leg; And a second band provided along the other side of the safety leg and having one end rotatably coupled with one end of the first band, the other end coupled with the other end of the first band, wherein the airbag is inflated , The coupling of one end of the first band and one end of the second band may be released by the force of the airbag inflating, and one end of the first band and the one end of the second band may be separated.

In addition, the ropes may be connected to the safety gaiters along the circumference of the safety gaiters.

In addition, the ignition unit includes a gas container for sealing and storing compressed gas with a film; A cap coupled to the gas container, having an outlet through which the compressed gas flows out of the airbag, and receiving an gunpowder and an igniter therein; And a moving plate positioned between the film and the gunpowder and having a tip formed on one surface facing the film, wherein the ignition signal may be applied to the igniter.

According to the present invention, when a worker wearing a safety device falls, a parachute connected to the safety gaiters is unfolded to slow down the fall speed of the worker, and thus, the degree of accident of the worker can be reduced.

1 is a view showing a safety device for a fall accident according to an embodiment of the present invention.
2 is a perspective view showing a safety device for a fall accident person of FIG. 1.
3 is a plan view showing a safety device for a fall accident person of FIG. 2.
4 is a diagram illustrating a first band and a second band capable of tightening adjustment according to an embodiment of the present invention.
5 is a cross-sectional view illustrating an airbag and an ignition unit according to an embodiment of the present invention.
6 is a cross-sectional view showing a tilt sensor according to an embodiment of the present invention.
7 is a block diagram showing a safety device for a fall accident according to an embodiment of the present invention.
8 is a diagram illustrating a process of deploying an airbag and a parachute according to an embodiment of the present invention.
9 is a view showing a fall state of a worker wearing a safety device according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical idea of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. In addition, in the drawings, thicknesses of films and regions are exaggerated for effective description of technical content.

In addition, in various embodiments of the present specification, terms such as first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another component. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. In addition, in the present specification,'and/or' is used to mean including at least one of the elements listed before and after.

In the specification, expressions in the singular include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, elements, or a combination of the features described in the specification, and one or more other features, numbers, steps, and configurations It is not to be understood as excluding the possibility of the presence or addition of elements or combinations thereof. In addition, in the present specification, "connection" is used to include both indirectly connecting a plurality of constituent elements and direct connecting.

Further, in the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a view showing a safety device for a fall accident according to an embodiment of the present invention. FIG. 2 is a perspective view showing a safety device for a fall accident person of FIG. 1, and FIG. 3 is a plan view showing a safety device for a fall accident person of FIG. 2.

1 to 3, the safety device 100 for a fall accident is worn on the leg 10 of a worker working in a high-rise work site. The safety device 100 for a fall accident may be worn on both legs 10 of a worker. Since the worn safety device 100 includes the same configuration, one safety device will be described in detail by way of example.

The safety device 100 for a fall accident is a safety leggings 110, a wearing band 120, an airbag module 130, a parachute 150, a tilt sensor 160, a switch 180, an alarm generator 190 , And includes a control unit 210.

The safety leggings 110 are bands made of elastic material, and can be worn on the ankle of the worker below the knee, and prevent the worker from tripping over the pants by tying the pants of the worker. In addition, since the safety leggings 100 are in close contact with the worker's leg and fixed by elastic force, it is not easily separated from the worker's leg. This allows the safety device 100 to be stably worn on the worker's body even with air resistance applied to the parachute 150 when the worker falls.

The wearing band 120 surrounds the safety leggings 110 and forms an accommodation space 121 between the safety leggings 110 and the safety leggings 110. In addition, the wearing band 120 can be tightened to be applied to various body sizes of a worker. The wearing band 120 may correspond to or have a height smaller than the safety leggings 110.

According to an embodiment, the wearing band 120 includes a first band 122 and a first band 123. The first band 122 surrounds the safety leggings 110 along one side of the safety leggings 110, and the second band 123 wraps the safety leggings 120 along the other side of the safety leggings 110. One end 122a of the first band 122 is coupled to be rotatable with one end 123a of the second band 123. One end 122a of the first band 122 may be pin-coupled to one end 123a of the second band 123. The other end 122b of the first band 122 is coupled to the other end 123b of the second band 123 to enable tightening adjustment.

4 is a diagram illustrating a first band and a second band capable of tightening adjustment according to an embodiment of the present invention.

4, a buckle 124 is provided at the other end 122b of the first band 122, and holes 125 into which a buckle pin can be inserted are provided at the other end 123b of the second band 123. A plurality may be formed along the length direction.

Although not shown in the drawings, according to another embodiment, an insertion hole and a fixing protrusion are formed in the other end 122b of the first band 122, and a locking protrusion over a predetermined area on the outer surface of the other end 123b of the second band 123 Can be formed. The other end 123b of the second band 123 is inserted into the insertion hole, and the fixing protrusion engages with the locking protrusion so that the other end 122b of the first band 122 and the other end 123b of the second band 123 Can be combined.

5 is a cross-sectional view illustrating an airbag and an ignition unit according to an embodiment of the present invention.

2 to 5, the airbag module 130 is fixedly coupled to the safety leggings 110 and is located in the accommodation space 121. The airbag module 130 includes an airbag 131 and an ignition unit 140.

The airbag 131 has an inlet 132 through which high-pressure gas is supplied from the ignition unit 140 and an internal space 133, and can be inflated by injection of the high-pressure gas.

The ignition unit 140 supplies high-pressure gas to the airbag 131. The ignition unit 140 includes a gas container 141 and a cap 143, a moving plate 147, and an igniter 148.

The gas container 141 is located on one side of the airbag 131 and stores high-pressure gas therein. The opening of the gas container 141 is closed by a membrane 142.

The cap 143 is fastened to the front end of the gas container 141. Gunpowder 144 is stored in the cap 143, and an igniter 148 is provided in the gunpowder 144. An outlet 143a is formed on one side wall of the cap 143, and the outlet 143a is connected to the inlet 132 of the airbag 131.

The moving plate 147 is located inside the cap 143 between the membrane 142 and the gunpowder 147, and a tip 147a protrudes on one surface facing the membrane 142. The tip 147a is provided with a pointed end.

When an ignition signal is applied to the igniter 148, the gunpowder 144 explodes, and the moving plate 147 is pushed and moved by the explosive force. The tip 147a tears the membrane due to the movement of the moving plate 147, and the high-pressure gas in the gas container 141 is leaked through the torn gap and is supplied into the airbag 131 through the outlet 143a and the inlet 132 . Accordingly, the airbag 131 can be inflated to a predetermined volume in a short time.

The parachute 150 is provided in an area between the airbag 131 and the wearing band 120 by folding a plurality of ropes 151 connected to the safety leggings 110.

The tilt sensor 160 detects the tilt of the worker's legs. The inclination of a worker's legs may vary depending on walking or work. It is generally arranged in a direction ranging from 0° to -90° to the ground. However, in the case of a fall accident, since the worker's head is facing down and the leg is facing up during the fall, the inclination of the leg of the worker is generally arranged in a direction ranging from +60° to +90° with respect to the ground. The tilt sensor 160 according to the present invention proposes a sensor having a simple structure that can clearly distinguish a fall accident situation from a walking or working situation.

6 is a cross-sectional view showing a tilt sensor according to an embodiment of the present invention. (A) shows the inclination sensor in the walking or working state of the worker, and (B) shows the inclination sensor in the fall situation.

Referring to FIG. 6, the tilt sensor 160 includes a sensor container 161, a conductive fluid 167, and a lead electrode 168.

The sensor container 161 has a first space 162 and a second space 163 formed therein. The first space 162 has a relatively large volume compared to the second space 163. A partition wall 164 is formed between the first space 162 and the second space 163. The partition wall 164 protrudes from the inner wall of the sensor container 161 to a predetermined length, and a connection flow path 164a is formed in the center region. The connection flow path 164a has a diameter smaller than that of the first space 162 and the second space 163, and connects the first space 162 and the second space 163. According to an embodiment, the partition wall 164 has a funnel shape, and the diameter of the connection flow path 164a may gradually decrease as it goes from the first space 162 to the second space 163. The structure of the partition wall 164 described above facilitates the flow of the conductive fluid 167 from the first space 162 to the second space 163.

A conductive fluid 167 having a predetermined capacity is stored in the sensor container 161. The conductive fluid 167 may move to the first space 162 and the second space 163 through the connection passage 164a according to the slope of the sensor container 161. According to an embodiment, mercury (Hg) may be used as the conductive fluid 167.

A pair of lead electrodes 186 are disposed to face each other in the second space 163. When the conductor fluid 167 moves into the second space 163 as shown in (B), a current flows between the lead electrodes 168.

The above-described sensor container 161 may be mounted on the safety leggings 110 or the wearing band 120. The sensor container 161 is mounted so that the first space 162 is located below and the second space 163 is located above, as shown in (A) when the worker wears the safety device 100 for a fall accident. . In a worker's walking or working situation, the inclination of the sensor container 161 may be located in the range of 0° to -90°. In this case, since most of the conductive fluid 167 stays in the first space 162, current does not flow between the lead electrodes 168. On the other hand, in the fall situation of the worker, the inclination of the sensor container 161 is located in the range of +60° to +90°, and the conductive fluid 167 stays in the second space 163, so that current between the lead electrodes 168 Flows.

Referring back to FIG. 2, the switch 180 is a power switch and turns on/off the safety device 100 for a fall accident. The safety device 100 may be operated by a worker changing the switch 180 to On before work in a high-rise work site. Although not shown in the drawing, the safety device 100 has a built-in rechargeable battery, and power may be applied to each of the components by the ON operation of the switch 180. According to an embodiment, the switch 180 may be provided on the operation panel 170, and the operation panel 170 may be installed on the wearing band 120.

The alarm generator 190 generates an alarm when a current flows between the lead electrodes 168 in the tilt sensor 160. According to an embodiment, the alarm generator 190 may be installed on the operation panel 170. When an alarm occurs due to a malfunction of the safety device 100, current flows between the lead electrodes 168 in a situation other than a fall situation, the operator changes the posture, that is, in the range of 0° to -90° with respect to the ground. It can be set to stop alarm generation.

7 is a block diagram showing a safety device for a fall accident according to an embodiment of the present invention.

Referring to FIG. 7, the controller 210 controls the safety device 100 for a fall accident by operating the switch 180. When the switch 180 is in the On position, the controller 210 controls various components according to an input signal. Specifically, a current flows between the lead electrodes 168 in the tilt sensor 160, and a current signal is received by the controller 210. The control unit 210 immediately generates an alarm in the alarm generator 190 according to the reception of the current signal. In addition, the controller 210 applies the ignition signal to the igniter 148 after the current signal is received and a preset time has elapsed. Here, the preset time is a short time during which an operator can change the posture when an alarm occurs due to a malfunction of the tilt sensor 160, and may be set by the user.

When an ignition signal is applied to the igniter 148 by the control unit 210, the gunpowder 144 inside the cap 143 explodes, and the moving plate 147 moves forward by the explosive force, and the tip 147a The end of the membrane 142 is torn. The high-pressure gas inside the gas container 141 flows out through the crack of the membrane 142 and is injected into the airbag 131 through the outlet 143a and the inlet 132.

FIG. 8 is a view showing a process of deploying an airbag and a parachute according to an embodiment of the present invention, and FIG. 9 is a view showing a fall state of a worker wearing a safety device according to the present invention.

8 and 9, the airbag 131 greatly inflates in a short time due to the injection of the high-pressure gas, and one end 122a and the second band of the first band 122 due to the force that the airbag 131 expands. The coupling of one end 123a of 123 is released, and the parachute 150 is deployed. The inflation force of the airbag 131 aids in rapid deployment of the parachute 150.

The deployed parachute 150 may receive air resistance during the fall of the worker and slow the fall of the worker. Since the ropes 151 of the parachute 150 are connected to the safety leggings 110 at regular intervals along the circumference of the safety leggings 110, the foot of a falling worker may be located under the center of the parachute 150. Therefore, the parachute 150 may have a sufficient air resistance. This can be expected to have the effect of reducing the degree of accidents of the crashed worker.

In the above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, those who have acquired ordinary knowledge in this technical field should understand that many modifications and variations can be made without departing from the scope of the present invention.

100: safety device for fall victims
110: safety gaiters
120: wearing band
130: airbag module
140: parachute
160: inclination sensor
180: switch
190: alarm generator
210: control unit

Claims (6)

Safety gaiters worn on the worker's legs;
A wearing band that surrounds the safety leggings, forms an accommodation space between the safety leggings, and is adjustable for tightening;
A tilt sensor that detects a tilt of the worker's legs;
An airbag module located in the accommodation space and including an airbag coupled to the safety leggings and an ignition unit configured to inflate the airbag;
A plurality of ropes connected to the safety gaiters, and folded to provide a parachute outside the airbag; And
When a signal is received from the tilt sensor, comprising a control unit for applying an ignition signal to the ignition,
The wearing band,
A first band provided along one side of the safety leggings; And
A second band provided along the other side of the safety leggings, one end coupled to one end of the first band so as to be rotatable, and the other end coupled with the other end of the first band,
When the airbag is inflated, the combination of one end of the first band and one end of the second band is released due to the force that the airbag inflates, and the first end of the first band and one end of the second band are separated. Safety device for the deceased. The method of claim 1,
The tilt sensor,
A sensor container having a first space and a second space formed therein, and a connection flow path connecting the first space and the second space having a diameter smaller than that of the first space and the second space;
A conductive fluid provided in the sensor container and movable to the first space and the second space through the connection flow path according to the inclination of the container; And
A safety device for a fall accident including a pair of lead electrodes whose ends are located in the second space. The method of claim 2,
The sensor container,
Protruding from the inner wall of the sensor container between the first space and the second space, and having a funnel-shaped partition wall in which the connection flow path is formed in a central region,
The connection passage is a safety device for a fall accident whose diameter gradually decreases from the first space to the second space. delete Safety gaiters worn on the worker's legs;
A wearing band that surrounds the safety leggings, forms an accommodation space between the safety leggings, and is adjustable for tightening;
A tilt sensor that detects a tilt of the worker's legs;
An airbag module located in the accommodation space and including an airbag coupled to the safety leggings and an ignition unit configured to inflate the airbag;
A plurality of ropes connected to the safety gaiters, and folded to provide a parachute outside the airbag; And
When a signal is received from the tilt sensor, comprising a control unit for applying an ignition signal to the ignition,
The ropes are connected to the safety gaiters along the circumference of the safety gaiters. Safety gaiters worn on the worker's legs;
A wearing band that surrounds the safety leggings, forms an accommodation space between the safety leggings, and is adjustable for tightening;
A tilt sensor that detects a tilt of the worker's legs;
An airbag module located in the accommodation space and including an airbag coupled to the safety leggings and an ignition unit configured to inflate the airbag;
A plurality of ropes connected to the safety gaiters, and folded to provide a parachute outside the airbag; And
When a signal is received from the tilt sensor, comprising a control unit for applying an ignition signal to the ignition,
The ignition unit
A gas container for sealing and storing compressed gas with a film;
A cap coupled to the gas container, having an outlet through which the compressed gas flows out of the airbag, and receiving an gunpowder and an igniter therein; And
It is located between the film and the gunpowder, and comprises a moving plate having a tip formed on one surface facing the film,
The ignition signal is applied to the igniter safety device for a fall accident.

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