JP4621464B2 - Airbag device for human body - Google Patents

Description

  The present invention provides, for example, a human body air for protecting a worker's human body from a drop impact when a worker such as a firefighter who performs fire fighting and rescue activities while carrying a cylinder for an air respirator falls from a high place. The present invention relates to a bag device.

  Traditionally, for example, when firefighters perform firefighting and rescue activities at a fire site, the worker has installed a cylinder for an air respirator at a site where the surrounding oxygen is lean or toxic gas or dust is generated. While carrying the back and wearing a breathing mask connected to the cylinder through an air supply hose, the cylinder air is supplied to the operator (for example, see Patent Document 1).

In addition, as a thing that absorbs a drop impact at the time of falling, an airbag that can be inflated so as to cover a predetermined part of the human body, an inflating means for inflating the airbag, and a fall detecting means for detecting a fall of the human body, 2. Description of the Related Art There has been known a human body airbag device that activates an inflating means when a fall of the human body is detected by a fall detection means (see, for example, Patent Document 2).
JP-A-9-285558 JP 2003-265638 A

  By the way, since there are many cases where work is performed at a high place in a fire site or the like, and the scaffold is easily collapsed, the worker may fall from the high place during the work. Therefore, by using the human body airbag device, even when the operator falls from a high place, the inflated airbag can absorb a drop impact caused by a direct collision with the ground or a structure. However, since workers such as firefighters carry air respirator cylinders, when they fall from the back side of the human body, the cylinders collide with the ground and structures and receive a drop impact from the cylinders. For this reason, when using the airbag device for human bodies, it is necessary to effectively protect the operator not only from a drop impact caused by a direct collision with the ground or a structure but also from a drop impact received from a cylinder.

  The present invention has been made in view of the above-described problems, and the object of the present invention is not only a drop impact to the human body due to a direct collision with the ground or a structure, but also a cylinder even when the vehicle falls from a high place. It is an object of the present invention to provide a human body airbag device that can absorb a drop impact on the human body received from the body.

In order to achieve the above object, according to the present invention, in claim 1, an airbag that can be inflated so as to cover a predetermined part of a human body, an air- charging device that inflates the airbag, and a crash detection means that detects a crash of the human body. And a control means for operating the charging device to inflate the air bag when the fall detection means detects a fall of a human body, and used by an operator who carries a cylinder for an air inhaler for supplying the intake air to the inhalation mask. the airbag device for a human body, said air bag to form a human body in a predetermined site and the human body piggybacked was a predetermined portion of the air inhaler cylinder so as to cover, respectively.

  As a result, since the airbag is formed so as to cover the human body and the predetermined part of the cylinder, not only a drop impact to the human body due to a direct collision with the ground or a structure, even when falling from a high place. Also, it can absorb the drop impact on the human body from the cylinder.

According to a second aspect of the present invention, in the airbag device for a human body according to the first aspect, the storage body for storing the airbag is detachably attached to a harness for carrying the air inhaler cylinder.

  Thus, in addition to the operation of the first aspect, since the cylinder is detachably attached to the harness for carrying the cylinder, it can be attached to the human body without providing the airbag harness.

  According to a third aspect of the present invention, in the airbag device for a human body according to the first or second aspect, the airbag covers the first airbag portion that inflates so as to cover the head side of the human body and the upper end side of the cylinder. The second airbag portion that inflates like this, the third airbag portion that inflates so as to cover the lower end side of the cylinder, and the fourth airbag portion that inflates so as to cover the waist portion side of the human body.

  Thereby, in addition to the operation of claim 1 or 2, the first and fourth airbag parts absorb the drop impact on the head and waist of the human body, and the second and third airbag parts cause the drop impact on the cylinder. Is absorbed.

  According to a fourth aspect of the present invention, in the airbag device for a human body according to the third aspect, the first and second airbag portions are formed so as to communicate with each other, and the third and fourth airbag portions are communicated with each other. Is formed.

  Thereby, in addition to the operation of the third aspect, the first and second airbag portions can be inflated by one charging device, and the third and fourth airbag portions are inflated by another one charging device. Can be made.

  According to a fifth aspect of the present invention, in the airbag device for a human body according to the fourth aspect, the first and second airbag portions are integrally formed so as to continuously extend from both sides of the head of the human body to the rear of the cylinder. is doing.

  Thereby, in addition to the effect | action of Claim 4, a 1st and 2nd airbag part can be formed by integral shape.

According to claim 6, in the airbag device for a human body according to claim 1, 2, 3, 4 or 5, the fall detection means includes a fall sensor for detecting the fall of the human body, and the human body is larger than the gravitational acceleration. An acceleration sensor that detects that an acceleration of a predetermined magnitude or more has occurred, and the control means is not detected that an acceleration of a predetermined magnitude or more has been detected by the acceleration sensor, When the fall of the human body is detected, if the detection state of the drop sensor continues for a predetermined time T1 or more, the airbag is inflated, and the acceleration sensor detects that an acceleration of a predetermined magnitude or more has occurred , and the acceleration sensor detects after the predetermined time T2 has elapsed since, if the human body falling has been detected by the drop sensor, the detection state of the drop sensor from the predetermined time T2 has elapsed a predetermined Continuing between T1 or more, it is configured so as to inflate the air bag.

  Thus, in addition to the effects of claims 1, 2, 3, 4 or 5, the acceleration sensor indicates that acceleration of a predetermined magnitude or more has occurred due to acceleration caused by vertical movement other than crash, such as jumping or jumping over a step. If the state where the fall of the human body is detected by the drop sensor continues for a predetermined time or more except when the predetermined time elapses after the detection, the airbag is inflated, so that malfunctions other than during a crash are reduced.

  According to the air bag device for a human body of claim 1, even when falling from a high place, not only a drop impact to the human body due to a direct collision with the ground or a structure but also a drop impact to the human body received from a cylinder is absorbed. Therefore, it is possible to effectively protect a worker carrying a cylinder such as a firefighter who works on a fire site while using an air respirator from a fall accident.

  According to the human body airbag device of the second aspect, in addition to the effect of the first aspect, since it can be attached to the human body without providing a harness for the airbag, the structure can be simplified. .

  Further, according to the human body airbag device of claim 3, in addition to the effect of claim 1 or 2, it is possible to absorb the drop impact to the head and waist of the human body, and to reliably drop the impact to the cylinder. Therefore, it is possible to protect the worker more effectively.

  According to the airbag device for a human body of claim 4, in addition to the effect of claim 3, each of the first and second airbag portions and the third and fourth airbag portions is an air charging device. Therefore, the structure can be simplified.

  Moreover, according to the airbag apparatus for human bodies of Claim 5, since the 1st and 2nd airbag part can be formed by integral shape in addition to the effect of Claim 4, it is 1st and 2nd, for example. The first and second airbag portions can be easily manufactured as compared with the case where the airbag portions are formed separately from each other and communicated with other members.

  According to the air bag device for a human body of claim 6, in addition to the effect of claim 1, 2, 3, 4 or 5, it is possible to reduce malfunctions other than at the time of crash, thereby improving the reliability. be able to.

  1 to 10 show an embodiment of the present invention. FIG. 1 is a front view of a harness provided with a human body airbag device, FIG. 2 is a block diagram showing a control system, and FIG. 3 is an airbag inflated state. 4 is a rear view thereof, FIG. 5 is a side view thereof, FIG. 6 is an upper plan view thereof, FIG. 7 is a lower plan view thereof, and FIG. 8 is an operation of the control unit. FIG. 9 is a perspective view of the airbag device for the human body in the contracted state of the airbag showing the state of being attached to the human body, and FIG. 10 is a perspective view of the airbag device for the human body in the state of inflation of the airbag showing the state of being attached to the human body. is there.

  The airbag device for a human body of the present embodiment inflates the airbag 1 that can be inflated into a predetermined shape, the first and second storage bodies 2 and 3 that store the airbag 1 in a contracted state, and the airbag 1. First and second charging devices 4, 5, a drop sensor 6 that detects a fall of a human body, an acceleration sensor 7 that detects that vertical acceleration has occurred in the human body, a drop sensor 6, and an acceleration sensor 7 The control unit 8 that activates each of the charging devices 4 and 5 based on the detection signal and the sensor unit 9 that houses the sensors 6 and 7, and the harness 20 for carrying the cylinder 10 for the air inhaler It can be attached detachably.

  The airbag 1 is made of a highly airtight and durable fabric (for example, wholly aromatic polyester), and is formed into a bag shape by sewing or heat-sealing such fabric. The airbag 1 includes a pair of left and right first airbag portions 1 a that expand so as to cover both sides of the head of the human body A, a second airbag portion 1 b that expands so as to cover the upper end side of the cylinder 10, It is comprised from the 3rd airbag part 1c which expand | swells so that a lower end side may be covered, and the 4th airbag part 1d which expand | swells so that the waist | hip | lumbar part back side of the human body A may be covered.

  The first and second airbag portions 1a and 1b are formed so as to continuously extend from both sides of the head of the human body A to the rear of the cylinder 10, and are integrally formed so as to communicate with each other. Each first airbag portion 1a is formed so as to cover both sides of the head of the human body A from the lower front surface to the upper rear portion, and the upper rear portion is communicated by a cylindrical communication portion 1e extending in the width direction. The second airbag portion 1b is formed along the outer peripheral surface of the cylinder 10 so as to cover the rear of the cylinder 10. Both ends of the second airbag portion 1b communicate with the first airbag portions 1a at both shoulder portions of the human body A.

  The third and fourth airbag portions 1c and 1d are arranged at intervals in the vertical direction, and communicate with each other by a communication portion 1f extending in the vertical direction. The third airbag portion 1 c is formed so as to extend in the width direction along the outer peripheral surface of the cylinder 10, and both ends thereof extend to both sides in the width direction of the cylinder 10. The fourth airbag portion 1d is formed so as to extend in the width direction along the waist back side of the human body A, and both ends thereof extend to both sides of the human body A.

  The first storage body 2 is formed so as to extend from both shoulders of the human body A to the rear of the cylinder 10, and stores the first and second airbag portions 1a and 1b in a contracted state. The first storage body 2 is formed by sewing a cloth made of a chemical fiber such as nylon, and is attached to the harness 20 by a well-known detachable fastener.

  The 2nd storage body 3 is arrange | positioned at the waist | hip | lumbar back side of the human body A, and has accommodated the 3rd and 4th airbag part 1c, 1d in the contracted state. Similar to the first storage body 2, the second storage body 3 is formed by sewing a cloth made of chemical fibers such as nylon, and is attached to the harness 20 by a well-known removable fastener.

  The first and second charging devices 4 and 5 have a known configuration in which, for example, a high-pressure gas is discharged into the airbag 1 by opening a container enclosing a compressed fluid by explosion of explosives. In this case, the first charging device 4 inflates the first and second airbag portions 1a and 1b, and the second charging device 5 has the third and fourth airbag portions 1c and 1d. Is designed to inflate.

  The drop sensor 6 is formed of, for example, a well-known three-axis acceleration sensor, and detects a state in which gravity acceleration due to the fall of the human body does not occur (hereinafter referred to as a fall state). In other words, the drop sensor 6 constitutes an always-on type sensor that is turned off when a fall state is detected.

  The acceleration sensor 7 is a known triaxial acceleration sensor, for example, and detects acceleration in the upward direction when a person jumps or jumps over a slight level difference. That is, the acceleration sensor 7 constitutes a normally-off sensor that is turned on when acceleration in the upward direction is detected.

  The control unit 8 is constituted by a microcomputer and is connected to the first and second charging devices 4 and 5, the drop sensor 6 and the acceleration sensor 7. The control unit 8 has a timer function and is turned on / off by a switch 8a.

  The sensor unit 9 includes a drop sensor 6 and an acceleration sensor 7 attached to a substrate (not shown) in a case, and is attached to a harness 20. The sensor unit 9 houses electrical components such as a circuit board and a power source that constitute the control unit 8, and the first and second charging devices 4 and 5 are connected to each other via cables (not shown). ing.

  The cylinder 10 is connected to a suction mask (not shown) through an air supply hose, and is used for a known air inhaler that supplies suction air to the suction mask.

  The harness 20 includes a back plate 21 disposed on the back side of the human body, a first belt 22 extending from the upper end side to the lower end side of the back plate 21 via the shoulder and side portions of the human body, and the lower end of the back plate 21. A second belt 23 extending from the side to the torso of the human body, and a third belt 24 for fixing the cylinder 10 to the back plate 21. The first and second belts 22 and 23 are attached to the human body by buckles. It is formed to be separable left and right on the front side.

  The airbag device for a human body configured as described above is used by attaching the first and second storage bodies 2 and 3 to the harness 20. At that time, the first storage body 2 is attached to the shoulder portion of the first belt 22, and the second storage body 3 is attached to the lower portion of the back plate 21.

  Next, the operation of the human body airbag device will be described according to the operation of the control unit 8 shown in the flowchart of FIG.

  First, when the harness 20 is attached to the human body A of the worker and the switch 8a is turned on (S1), the following program is started. That is, when the acceleration sensor 7 is not turned on (eg, the operator jumps or jumps over a step) and the acceleration sensor 7 is not turned on (S2), the operator falls down during work at a high place, for example. Depending on the state, the drop sensor 6 is turned off (S3), and when the drop sensor 6 is turned off for a predetermined time T1 (for example, 0.4 seconds) or longer (S4), the charging devices 4 and 5 are activated (S4). S5). Thereby, the airbag 1 expand | swells and the drop impact to a human body is absorbed.

  At that time, since the head and waist of the human body are respectively covered by the first and fourth airbag portions 1a and 1d, a drop impact on the head and waist of the human body due to a direct collision with the ground and the structure is first. It is absorbed by the 1st and 4th airbag parts 1a and 1d. Moreover, since the upper end side and the lower end side of the cylinder 10 are respectively covered by the second and third airbag portions 1b and 1c, when the cylinder 10 collides with the ground or a structure such as when a human body falls from the back side. In this case, the drop impact on the cylinder 10 is absorbed by the second and third airbag portions 1b and 1c.

  On the other hand, when the acceleration sensor 7 is turned on due to upward acceleration other than a crash, such as when an operator jumps or jumps over a slight level difference (S2), a predetermined time T2 (for example, 0) .4 seconds) (S6), the on / off state of the drop sensor 6 is determined (S3). That is, in the case of an operator's jump or the like, even if the drop sensor 6 is turned off during the jump, it is normally landed when the time T2 has elapsed, so it is determined in step S3 that the drop sensor 6 is turned off. The charging devices 4 and 5 are not operated. If the user falls down and a state close to a jump or the like occurs and the acceleration sensor 7 is turned on (S2), the fall sensor 6 remains off even after the predetermined time T2 has elapsed. (S6, S3) After the predetermined time T1 has passed (S4), the respective charging devices 4, 5 are activated (S5).

  Thus, according to the airbag apparatus for human bodies of this embodiment, since the airbag 1 was formed so that the predetermined part of the human body A and the cylinder 10 might each be covered, even if it falls down from a high place, the ground and a structure It can absorb not only the drop impact on the human body A due to the direct collision with the human body A but also the drop impact on the human body A received from the cylinder 10, and the worker who works at a high place while carrying the cylinder 10 on the back is effective from the fall accident. Can be protected.

  Further, since the airbag device for human body is configured to be detachable from the harness 20 for carrying the cylinder 10, it can be attached to the human body A without providing a harness for the airbag, and the structure is simplified. Can be achieved.

  Further, the airbag 1 includes a first airbag portion 1 a that covers the head side of the human body A, a second airbag portion 1 b that covers the upper end side of the cylinder 10, and a third airbag portion that covers the lower end side of the cylinder 10. 1c and the fourth airbag portion 1d that covers the waist portion side of the human body A, so that it is possible to effectively absorb the drop impact to the head and waist of the human body, and also the drop impact to the cylinder 10 Can be absorbed reliably.

  In this case, the first and second airbag portions 1a and 1b are formed to communicate with each other, and the third and fourth airbag portions 1c and 1d are formed to communicate with each other. The bag portions 1 a and 1 b can be inflated by the first charging device 4, and the third and fourth airbag portions 1 a and 1 b can be inflated by the second charging device 5. Thereby, the four airbag parts 1a, 1b, 1c, and 1d can be inflated by the two charging devices 4 and 5, and the structure can be simplified.

  Further, since the first and second airbag portions 1a, 1b are formed so as to continuously extend from both sides of the head of the human body to the rear of the cylinder 10, the first and second airbag portions 1a, 1b are integrated. The first and second airbag portions 1a and 1b can be formed more easily than when the first and second airbag portions are formed separately from each other and communicated with other members, for example. Can be manufactured.

  Furthermore, the state in which the fall sensor 6 detects the fall of the human body A is detected for a predetermined time T1 except for the period until the predetermined time T2 elapses after the acceleration sensor 7 detects that an acceleration of a predetermined magnitude or more has occurred. Continuing the above, since the airbag 1 is inflated, it is possible to reduce malfunctions other than at the time of crash, and to improve the reliability.

  In the above-described embodiment, the fall sensor 6 and the acceleration sensor 7 as the fall detection means are configured by two triaxial acceleration sensors. However, a single triaxial acceleration sensor detects a fall state and moves upward. It is also possible to configure so as to detect both accelerations. Moreover, in the said embodiment, although the fall detection means comprised what comprised the fall sensor 6 and the acceleration sensor 7 which consist of a triaxial acceleration sensor, if it detected the fall of a human body, it showed to the said embodiment. It is not limited to things.

The front view of the harness provided with the airbag apparatus for human bodies which shows one Embodiment of this invention Block diagram showing the control system Front view of air bag device for human body showing air bag inflated state Rear view of air bag device for human body showing air bag inflated state Side view of air bag device for human body showing air bag inflated state The upper side top view of the airbag apparatus for human bodies which shows an airbag expansion state Lower side plan view of airbag device for human body showing airbag inflated state Flow chart showing operation of control unit The perspective view of the airbag apparatus for human bodies of the airbag contracted state which shows the state with which the human body was mounted | worn The perspective view of the airbag apparatus for human bodies of the airbag expansion | swelling state which shows the state with which the human body was mounted | worn

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Air bag, 2 ... 1st accommodating body, 3 ... 2nd accommodating body, 4 ... 1st charging device, 5 ... 2nd charging device, 6 ... Fall sensor, 7 ... Acceleration sensor, 8 ... control part, 10 ... cylinder, 20 ... harness, A ... human body.

Claims (6)

An inflatable air bag to cover the body of the predetermined part, a plenum apparatus for inflating an air bag, a crash detecting means for detecting a human body crash, the air filling device upon detecting a drop of the human body by the crash detection means and control means for inflating the air bag operates, an air bag device for a human body by the operator using burdened air inhaler canister for supplying intake air to the intake mask,
The airbag device for a human body, wherein the airbag is formed so as to cover a predetermined portion of the human body and a predetermined portion of an air inhaler cylinder carried on the human body. Said housing body for housing the airbag, an airbag device for the body according to claim 1, wherein the removably be mounted digits to the harness for piggybacking air inhaler canister. The airbag is inflated so as to cover a first airbag portion that inflates to cover the head side of the human body, a second airbag portion that inflates to cover the upper end side of the cylinder, and a lower end side of the cylinder. The air bag device for a human body according to claim 1 or 2, comprising a third air bag portion and a fourth air bag portion that inflates so as to cover the waist side of the human body. The air bag device for a human body according to claim 3, wherein the first and second airbag portions are formed to communicate with each other, and the third and fourth airbag portions are formed to communicate with each other. The human body airbag device according to claim 4, wherein the first and second airbag portions are integrally formed so as to continuously extend from both sides of the head of the human body to the rear of the cylinder. The fall detection means comprises a fall sensor that detects the fall of a human body and an acceleration sensor that detects that an acceleration of a predetermined magnitude greater than the gravitational acceleration has occurred in the human body,
If the acceleration sensor has not detected that the acceleration of a predetermined magnitude or more has occurred, and the fall sensor detects a fall of the human body, the detection state of the fall sensor continues for a predetermined time T1 or more. When the airbag is inflated, the acceleration sensor detects that an acceleration of a predetermined magnitude or more has occurred , and the fall sensor detects the fall of the human body after a predetermined time T2 has elapsed since the detection of the acceleration sensor. The air bag is configured to be inflated when the detection state of the drop sensor continues for a predetermined time T1 or more after a predetermined time T2 has elapsed . Air bag device for human body.

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