JP2000279538A - Drop impact absorbing auxiliary device for human body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drop impact absorbing auxiliary device for human body capable of preventing the occurrence of an malfunction and improving the reliability. SOLUTION: Since a drop condition of a human body is detected by an acceleration detection means 31, an accumulated value of a position signal 44 of a position detection means 42 becomes negative polarity by the drop of the human body, and an air bag is inflated when it is detected that this condition continues for a predetermined time, a fall detection signal 45 is not outputted for the action that returns to an initial position such as a jump and the action having a short continuation time of a drop condition such as jumping down a small step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall impact absorbing device for a human body for protecting a human body from a drop impact when the vehicle falls down from an aerial work site such as a construction site.

[0002]

2. Description of the Related Art In recent years, falling accidents at construction sites and the like have increased, and safety at labor sites has become a problem.
Therefore, as described in, for example, Japanese Patent Application Laid-Open No. 7-96049, a mounting body to be mounted on a human body of a worker and a predetermined portion of the mounting body are provided as a device for absorbing a drop impact at the time of falling. An air bladder, an inflation means for inflating the air bladder, an acceleration sensor for detecting acceleration acting on the worker, and a speed sensor for detecting the speed of the worker. It is known that an air bag is inflated by an inflation means when a detection value of a speed sensor exceeds a predetermined set value and this state continues for a predetermined time.

[0003]

However, in the method of detecting a fall of the worker by using the acceleration sensor and the speed sensor as described above, for example, when the worker jumps or jumps down a slight step, the fall occurs. In other vertical movements, even when the detection values of the acceleration sensor and the speed sensor satisfy the fall detection condition, a fall detection signal is output, so that a malfunction easily occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a fall impact absorption auxiliary for a human body capable of preventing occurrence of malfunction and improving reliability. To provide tools.

[0005]

According to the present invention, in order to achieve the above object, according to the present invention, a body to be worn on a human body, an air bag provided at a predetermined portion of the body, and an air bag are provided. An inflation means for inflating, comprising a fall detection device for detecting a fall of the human body, when the fall detection device detects the fall of the human body, in the fall impact absorption aid for the human body, so as to inflate the air bag by the inflation means, Acceleration detection means for outputting an acceleration signal corresponding to the fall acceleration of the human body, and acceleration determination for judging that the acceleration signal of the acceleration detection means has decreased from a state where the acceleration signal has reached a predetermined value or more to a predetermined value or less. Means, and position detection means for outputting position signals corresponding to the upward and downward directions of the human body, respectively,
A position determination unit that determines that the human body has moved below the initial position based on the position signal of the position detection unit; and that the acceleration signal has dropped from a state where the acceleration signal has exceeded a predetermined value to a predetermined value or less by the acceleration determination unit. Is determined, and when the position determination unit determines that the position of the human body has moved below the initial position, a fall determination unit that outputs a fall detection signal.

According to a second aspect of the present invention, there is provided a body to be worn on a human body, an air bag provided at a predetermined portion of the body, an inflating means for inflating the air bag, and a fall detecting device for detecting a fall of the human body. When a fall of the human body is detected by the fall detection device, the fall impact absorption auxiliary device for a human body in which the air bag is inflated by an inflation means, the fall detection device transmits a speed signal corresponding to the fall speed of the human body. Speed detecting means for outputting the speed signal, speed determining means for determining that the speed signal of the speed detecting means has reached a predetermined value or more, and position detecting means for outputting position signals corresponding to the upward and downward directions of the human body, respectively. The position determining means for determining that the human body has moved below the initial position based on the position signal from the position detecting means, and the speed determining means determine that the speed signal has reached a predetermined value or more. By the human body position by and position determining means is composed of a crash determination means for outputting a crash detection signal and that moves downward is determined from the initial position.

According to a third aspect of the present invention, a mounting body to be mounted on a human body, an air bag provided at a predetermined portion of the mounting body, an inflating means for inflating the air bag, and a fall detecting device for detecting a fall of the human body When a fall of the human body is detected by the fall detection device, the fall impact absorbing aid for a human body in which the air bag is inflated by an inflation means, the fall detection device is provided with an acceleration signal corresponding to the fall acceleration of the human body. , An acceleration determining means for determining that the acceleration signal of the acceleration detecting means has decreased to a predetermined value or less from a state where the acceleration signal has reached a predetermined value or more, and outputs a speed signal corresponding to the falling speed of the human body Speed detecting means, speed judging means for judging that the speed signal of the speed detecting means has reached a predetermined value or more, and position signals corresponding to the upward and downward directions of the human body, respectively. Position detection means, position determination means for determining that the human body has moved below the initial position based on the position signal of the position detection means, and predetermined value from a state in which the acceleration signal has reached a predetermined value or more by the acceleration determination means And it is determined that the speed signal has reached a predetermined value or more by the speed determination means,
And a fall judging means for outputting a fall detection signal when the position judging means judges that the position of the human body has moved below the initial position.

That is, according to the first, second and third aspects, in the operation of returning to the initial position, for example, in the case of jumping, it is not determined that the object has moved below the initial position of the position determining means, so that the vehicle crashes. No detection signal is output.
On the other hand, in the case of a crash, a position signal indicating that the vehicle has moved downward from the start of the fall is output, so it is determined by the position determining means that the vehicle has moved below the initial position, and the fall detection signal is output. Is output.

According to a fourth aspect of the present invention, in the fall impact absorbing aid for a human body according to the first, second, or third aspect, the timing means for outputting the fall detection signal after the determination satisfying the fall determination condition is continued for a predetermined time. And a duration determining means. Thereby, in addition to the effect of claim 1, 2 or 3, for example, when jumping down a slight step,
Although the fall determination condition may be satisfied, a fall detection signal will not be output unless the duration is continued for a predetermined time.

According to a fifth aspect of the present invention, in the fall impact absorbing aid for a human body according to the first, second, third, or fourth aspect, the position detecting means detects acceleration signals corresponding to the upward and downward directions of the human body, respectively. Acceleration detecting means for outputting, and a first signal for obtaining a speed signal by integrating an acceleration signal of the acceleration detecting means.
It comprises integrating means and second integrating means for integrating the velocity signal to obtain a position signal. Thus, in addition to the operation of the first, second, third or fourth aspect, since the position signal is obtained by integrating the acceleration signal by the first integration means and the second integration means, it is necessary to provide a plurality of acceleration detection means. Absent.

According to claim 6, claims 1, 2, 3,
4. The fall impact absorbing aid for human body according to 4 or 5,
The acceleration detecting means is constituted by a plurality of acceleration detecting means for detecting accelerations in three axes orthogonal to each other. Thereby, in addition to the effects of the first, second, third, fourth, or fifth aspect, accelerations in three axes orthogonal to each other are detected, so that a fall is reliably detected even if the posture at the time of the fall changes. .

According to claim 7, claims 1, 2, 3,
7. The fall impact absorbing aid for a human body according to 4, 5, or 6, wherein the fall detecting device can be operated by coupling a pair of coupling members that are coupled to each other when the mounting body is attached to a human body. Switch means for setting the state. Thereby, in addition to the operation of the first, second, third, fourth, fifth, or sixth aspect, the fall detection device can be operated by connecting the combined bodies when the wearable body is mounted on the human body. This prevents forgetting to start the operation of the fall detection device.

According to claim 8, claims 1, 2, 3,
4. The fall impact absorbing aid for a human body according to 4, 5, 6, or 7, wherein the mounting body is provided with a holding portion capable of holding an arbitrary safety belt. Thereby, Claims 1, 2, 3, 4,
In addition to the operation of 5, 6 or 7, it is possible to previously hold the safety belt on the wearing body.

According to claim 9, claim 1, 2, 3,
In the fall impact absorbing aid for human body according to 4, 5, 6, 7, or 8, a storage portion for storing an air bag in a contracted state is provided in the mounting body. Thereby, Claims 1, 2, 3,
In addition to the effects of 4, 5, 6, 7 or 8, the air bag is stored in a contracted state, so that the handleability during normal wearing is not impaired.

[0015] According to claim 10, claim 1, 2,
3. The drop impact absorbing aid for a human body according to 3, 4, 5, 6, 7, 8, or 9, wherein the air bag is sewn from a plurality of fabrics, and an elastic member is interposed between sewing surfaces of the fabric of the air bag. The seam at the seam portion of the air bag and the surrounding area are covered with an adhesive covering material. Accordingly, in addition to the operation of the first, second, third, fourth, fifth, sixth, seventh, eighth, or ninth aspect, the elastic member is interposed between the sewn surfaces of the fabric of the air bag. The airtightness of the seam of the bag is improved. In addition, since the seam of the stitched portion of the air bag and the periphery thereof are covered with the covering material, no air leak occurs from the seam of the stitched portion of the air bag.

Further, in claim 11, claims 1, 2,
11. The drop impact absorbing aid for a human body according to 3, 4, 5, 6, 7, 8, 9 or 10, wherein the expansion means is sealed with a compressed fluid inside and one end is opened so as to be opened by explosive explosive. A fluid discharge container having a fluid discharge port connected to the air bag, and covering one end of the fluid fill container so as to communicate with the fluid discharge port; and one end of the fluid fill container in the fluid discharge member. And explosives that explode the explosive. Thus, in addition to the effects of claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, when the explosive is exploded by the detonating means, one end of the fluid enclosure is directly opened by the pressure of the explosion. As a result, the fluid in the fluid enclosing container is ejected instantaneously.

According to a twelfth aspect of the present invention, in the fall impact absorbing aid for a human body according to the eleventh aspect, the periphery of the fluid inflow portion of the air bag is covered with a protective member having a cushioning property. Thus, in addition to the function of the eleventh aspect, the fluid inflow portion of the air bag is protected from debris at the time of explosion by the protection member.

[0018]

1 to 14 show a first embodiment of the present invention. FIG. 1 is a front view of a fall impact absorbing aid for a human body, FIG. 2 is a rear view thereof, and FIG. FIG. 4 is a perspective view showing the air bag in an inflated state, FIG. 5 is a side view showing the state of attachment to a human body, FIG. 6 is a schematic configuration diagram of the air bag, and FIG. 8 to 10 are explanatory views showing a method of sewing the air bag, FIG. 11 and FIG.
2 is a partial cross-sectional side view and operation explanatory view of the charging device, FIG.
FIG. 14 is a block diagram of a fall detection device, and FIG. 14 is a circuit configuration diagram.

This fall impact absorbing aid for human body includes a mounting body 10 to be mounted on a human body, first to third air bags 11, 12, and 13 mounted at predetermined portions of the mounting body 10, and each air bag. It comprises a charging device 20 for inflating 11, 12, 13 and a fall detecting device 30 for detecting a fall of a human body.

The mounting body 10 is formed so as to be worn on the upper body of the human body, and has first and second cover portions 10a and 10b for accommodating the air bags 11, 12, and 13 in a contracted state. . In this case, the first cover portion 10a is formed at a portion corresponding to a part of a human body's chest, both shoulders and back, and the second cover portion 10b is formed at a portion corresponding to a part of a human body's waist. Each of the cover parts 10a and 10b has one end fixed to the mounting body 10 side and the other end side detachably fixed to the mounting body 10 side by a plurality of Velcro (registered trademark) 10c. In addition, the mounting body 10
A plurality of holding portions 1 for holding a well-known safety belt 14
0d is provided. That is, the safety belt 14 is formed in a belt shape so as to wind a main part of a human body, and a rope 14a connected to the master rope is attached to the back side thereof. Each of the holding portions 10d is formed of an annular member through which the safety belt 14 can be inserted, and is attached to the mounting body 10 with a space therebetween. A pair of connecting members 15 and 16 are provided on the lower end side of the mounting body 10 to be connected when the body is mounted on a human body. Each of the connecting members 15 and 16 is attached to both ends of a belt 17 held by the mounting body 10. Have been. One connecting member 15
Has a pair of elastic engaging claws 15a,
5a are provided between the projections 15b.
A conductive member 15c is attached to the tip of b. The other connecting member 16 has a receiving portion 16a for receiving each of the engaging claws 15a and the protrusion 15b of the one connecting member 15, and a pair of engaging portions 15a for engaging with each of the engaging claws 15a is provided in the receiving portion 16a. The engagement hole 16b and the conductive member 15 of the one coupling member 15
A pair of electrodes 16c that come into contact with c are provided. That is, when one coupling member 15 is inserted into the receiving portion 16a of the other coupling member 16, each of the engagement claws 1 of the one coupling member 15
5a engages with each engagement hole 16b of the other coupling member 16,
The coupling members 15 and 16 are coupled to each other, and the electrodes 16c are in contact with the conductive member 15c and are electrically connected to each other. In addition, each engaging claw 1 is
5a is pressed from the outside of each engaging hole 16b, and each engaging claw 15 is pressed.
By releasing the engagement between the a and the engagement holes 16b, the coupling members 15, 16 are separated from each other, and the electrical connection between each electrode 16c and the conductive member 15 is also released. Further, a display lamp 10e made of an LED is provided on the front side of the mounting body 10.
Is provided.

Each of the air bags 11, 12, and 13 is sewn with a highly air-tight and durable cloth, and is formed so as to communicate with each other. Shrunk. The first air bladder 11 is provided at a site corresponding to the periphery of the neck of the human body, and is formed so as to cover both sides and the back of the neck. The second air bladder 12 is provided at a portion corresponding to the back of the human body, and is formed vertically long along the center of the back. In this case, the upper and lower ends of the second air bladder 12 are the first and third air bladders 11, 13 respectively.
Respectively. The third air bladder 13 is provided at a position corresponding to the circumference of the waist of the human body, and is formed so as to cover both sides and the back of the waist.

Here, the structure of each of the air bladders 11, 12, 13 will be described. That is, each air bag 11, 12, 1
Vectran (registered trademark) (a wholly aromatic polyester) is used as the material 3 having high airtightness and durability, and is formed by sewing a cloth made of this material. That is, as shown in FIG. 6, the first air bladder 11 is made up of a cloth 11a on the upper surface side and a cloth 2b on the lower surface side, and is formed by sewing the edges of the cloths 11a and 11b. As shown in FIG. 7, the second air bladder 12 is made of a single piece of cloth 12a, and is formed by rolling the cloth 12a into a tubular shape and sewing both ends. Third air bag 1
Reference numeral 3 denotes a cloth 13a on the upper surface side and a cloth 13b on the lower surface side, and is formed by sewing the peripheral edges of the cloths 13a and 13b, like the first air bag 2. The holes 11 communicating with the second air bag 12 are formed in the cloth 11 b on the lower surface side of the first air bag 11 and the cloth 13 a on the upper surface side of the third air bag 13.
c, 13c are provided, and the air bags 11, 12, 13 are integrally formed by sewing the peripheral edges of the holes 11c, 13c and the upper and lower ends of the second air bag 12, respectively. As shown in FIG. 4, a charging device 20 is connected to the third air bag 13 and an inner peripheral surface corresponding to the connection portion has a protective member 13d made of a material having a buffer property such as cloth, rubber or plastic. Covered by

Next, a method of sewing the air bags 11, 12, and 13 will be described. First, as shown in FIG. 8A, the first air bag 11 and the third air bag 13
A rubber 18a as an elastic member is interposed between the suturing surfaces of (13a) and 11b (13b), and the cloths 11a (13a), 11b (13b) and the rubber 18a are double-stitched with the Vectran thread 18b, and FIG. As shown in (b), an adhesive covering material 18c made of silicon bond is applied to the seam and the periphery thereof.

As shown in FIG. 7, the second air bag 12 is formed by bending both ends of a cloth 12a which is rolled into a cylindrical shape as shown in FIG. 7 in the same direction as shown in FIG. do. Next, the sewn portion is shown in FIG.
As shown in FIG. 9 (b), the folded portion and the fabric 12a are sewn with a single thread with a thread 18b. Then, as shown in FIG. 9 (c), a coating material 8 is applied to the seam and the periphery thereof. In the method of sewing the second air bladder 12, the both ends of the cylindrically rolled fabric 12a are bent outward and sewn, and then the fabric 12a is turned over, so that the sewn portion is positioned inside the fabric 12a. To do.

The upper and lower ends of the second air bag 12 and the first and third
As shown in FIG. 10A, the air bags 11, 13 are joined to the periphery of the hole 11c (13c) by bending the end of the second air bag 12 bent inward and the first air bag 11 (or the third air bag 11). Air bag 1
3) The cloth 11b (13a) and the Vectran yarn 18b
Stitches with two stitches. Next, the sewn portion is bent toward the second air bladder 12 as shown in FIG. 10 (b), and the folded portion and the cloth 12a of the second air bladder 12 are threaded together.
After a single press stitching is performed by 8b, as shown in FIG. 10C, a covering material 18c is applied to the seam and the periphery thereof.

The charging device 20 includes a cylinder 21 as a fluid-filled container filled with a compressed fluid, a gas discharge member 22 that covers one end of the cylinder 21, and an explosive 2 that opens the cylinder 21.
3 and an igniter 24 for exploding the explosive 23. The cylinder 21 is formed of a metal container in which a compressed fluid is filled in a gas or liquid state, and one end thereof is closed by a sealing portion 21 a which can be opened by the explosion of the explosive 23. The sealing portion 21a is provided integrally with the cylinder main body, and is formed thinner than the cylinder main body side. As an example of the embodiment, the capacity of the cylinder 21 is 100 cc and the opening diameter thereof is 8
mm, the thickness of the sealing portion 21a is 0.4 mm, and a mixture of carbon dioxide and 25% of nitrogen gas is used as the compressed fluid. The gas discharge member 22 is screwed to one end side of the cylinder 21, and a space 22 a surrounding the closed part 21 a of the cylinder 21 is provided therein. A gas discharge port 22b communicating with the space 22a is provided on a side surface of the gas discharge member 22, and the gas discharge port 22b is connected to the third air bag 13. Further, a cylindrical portion 22c protruding into the space portion 22a is provided inside the gas discharge member 22, and one end of the cylindrical portion 22c is open to the sealing portion 21a of the cylinder 21. The explosive 23 is made of an explosive such as DDNP (diasodinitrophenol), and is stored in the cylindrical portion 22 c of the gas discharge member 22. The igniter 24 is buried in the explosive 23 and is connected to a power supply 25 via a conductor 24a.

That is, in the charging device 20, the igniter 2
When an electric current flows through the explosive 4, the explosive 23 explodes, and the pressure causes the explosive 23 to close as shown in FIG.
Is crushed, and one end of the cylinder 21 is opened. As a result, as shown in FIG. 12 (b), the gas in the cylinder 21 is blown out from the opening formed by the blast into the space 22a of the gas discharge member 22, and the gas discharge port 2 of the gas discharge member 22 is discharged.
It is introduced into the third air bag 13 through 2b. In this case, since the explosive 23 is accommodated in the cylindrical portion 22c which opens toward the sealing portion 21a of the cylinder 21, the pressure of the explosion is concentrated on the sealing portion 21a of the cylinder 21, and the explosion of the explosive 23 The sealing portion 21a of the cylinder 21 can be reliably opened. Further, when the fluid in the cylinder 21 is sealed in a liquid state, the fluid in the cylinder 21 is more instantaneously ejected due to a so-called bumping phenomenon in which the liquid is rapidly vaporized by the heat of the explosion. In this case, the charging device 20
Is heated by the explosion heat, but is cooled by the vaporization of the fluid discharged from the cylinder 21, so that it is not thermally damaged.

The fall detecting device 30 is an acceleration detecting means 3 for outputting an acceleration signal corresponding to the fall acceleration of the wearer.
1, acceleration detecting means 32 for outputting acceleration signals of positive and negative polarities respectively corresponding to accelerations generated in the upward and downward directions of the wearer, and the detection signal of one of the acceleration detecting means 31 is set to a predetermined value. Acceleration determining means 33 for outputting a high-level detection signal when the value falls below a predetermined set value from a state in which the value has reached the predetermined value, a setting unit 34 for setting the set value of the acceleration determining means 33, and the other acceleration detecting means 32, a first integration means 35 for outputting a speed signal obtained by integrating the acceleration signal, a second integration means 36 for outputting a position signal obtained by integrating the speed signal, and a second integration means 36 A position determining unit 37 that cumulatively adds the positive and negative position signals output from and outputs a high-level detection signal when the cumulative value becomes a negative value indicating a downward direction; AND means 38 for detecting that both the detection signals of the speed judging means 33 and the position judging means 37 have become high level, and a time counting means 39 for counting the duration of the detection signal output from the AND means 38. And a duration determining means 40 for outputting a fall detection signal when the counting time of the timing means 39 exceeds a predetermined set time, and a setting device 41 for setting the set time of the duration determining means 40. In this case, the other acceleration detecting means 32, the first integrating means 35 and the second integrating means 36 use the position detecting means 4.
2 are configured.

As shown in the circuit diagram of FIG. 14, a fall detecting device 30 is provided by a conductive member 15c of one connecting member 15 of the mounting body 10 and each electrode 16c of the other connecting member 16.
Is formed, and the switch 30a opens and closes a circuit including the fall detection device 30, the power supply 30b, and the display lamp 1e. In this case, the fall detection device 30 and the power supply 30b are housed in the sensor unit 30c, and the sensor unit 30c is
Attached to the belt 17. The igniter 24 of the charging device 20 is connected to a power supply 25 via a relay 26, and the relay 26 is closed by an output signal of the fall detecting device 30.

In the fall impact absorbing aid for a human body configured as described above, for example, the mounting body 10 is mounted on the body of the worker 1 as a wearer, and the connecting members 15 and 16 of the mounting body 10 are connected. By coupling with each other, the switch 30a is closed, the fall detection device 30 is turned on, and the display lamp 1e is turned on. Next, if the worker 1 accidentally falls from a high place, a fall detection signal is output by the fall detection device 30, whereby the air charging device 20 is operated to inflate each of the air bladders 11, 12, and 13. Air bag 11,
The impact of falling on the human body is absorbed by 12, 13. In this case, each air bag 11, 12, 1
3 is filled with high-pressure gas, each air bag 11, 12, 1
3, the cover portions 10a, 10b of the mounting body 10
As shown in FIG. 5, the neck, back, and waist of the worker 1 are surrounded by the respective air bladders 11, 12, and 1 as shown in FIG.
3 instantaneously covered.

In the fall detecting device 30, when the worker 1 falls down, one of the acceleration detecting means 31 detects a large fall acceleration equal to or larger than a predetermined set value (for example, 1 G) at the start of the fall. When the acceleration signal 43 of the acceleration detecting means 31 drops below a predetermined set value (for example, 0.8 G) or less, the acceleration determining means 33 sends the logical product means 38 a high-level detection signal. Is output. On the other hand, when the worker 1 falls, the position signal 4 output from the position detecting means 42 is output.
When the cumulative addition value of 4 becomes negative, a high-level detection signal is output from the position determination unit 37 to the AND unit 38. Accordingly, when the logical product means 38 detects that the detection signals of the acceleration determining means 33 and the position determining means 37 have both become high level, the time counting means 39 counts the continuation time, and the continuation time is determined by the predetermined time. (For example, 0.4 seconds), the duration detection means 40 outputs a fall detection signal 45. that time,
For example, in the operation of returning to the initial position as in the case of a jump, the cumulative addition value of the position signal 44 becomes zero because the addition value of the positive polarity and the addition value of the negative polarity cancel each other out.
The detection signal of the position determining means 37 is not output. On the other hand, in the case of a fall, since the position signal 44 of the negative polarity indicating that it is moving downward from the start of the fall is output,
The cumulative addition value of the position signal 44 becomes negative, and it is detected that the position signal 44 has moved below the initial position. When the vehicle jumps down a slight step, a detection signal may be output from the AND means 38. If the duration does not reach the time set by the duration determination means 40, a fall detection signal is output. 45 is not output. still,
Since the fall amount is about 0.8 meters in the time of 0.4 seconds, the fall may be determined if the fall of 0.4 seconds continues. When the detection signal of the AND means 38 is output intermittently, the count value of the timer 39 is reset to zero every time the detection signal of the AND means 38 is cut off. As long as the detection signal of the means 38 does not continue for a set time or more, the fall detection signal 45 is not output.

As described above, according to the fall impact absorbing aid for human body of this embodiment, the falling state of the worker 1 is detected by the acceleration detecting means 31, and the position of the position detecting means 42 is detected by the falling of the worker 1. When the accumulated value of the signal 44 becomes negative and it is detected that this state has continued for a predetermined time, the air bags 11, 12, and 13 are inflated, so that the operation returns to the initial position as if jumping. Also, for an operation in which the duration of the falling state is short, such as when jumping down a slight step, the fall detection signal 45 is not output, and a malfunction in such a case can be reliably prevented. In this case, the connecting member 1 of the mounting body 10
When the mounting of the mounting body 10 is completed by combining the mounting members 5 and 16, the switch 30a of the connecting members 15 and 16 enables the fall detecting device 30 to be in an operable state. It can be reliably prevented.

Further, the respective fabrics 11a, 11b, 13a, 13b of the first and third air bags 11, 13 are sewn with the rubber 18a interposed between the respective sewn surfaces. The airtightness and pressure resistance of the sewn portion can be improved. Further, the seam of the seam and the periphery thereof are covered with a covering material 18 made of silicon bond.
Since the coating is performed with c, air leakage from the seam can be reliably prevented by the close contact of the coating material 8. In suturing the second air bag 12 and suturing the second air bag 12 and the first and third air bags 11, 13, the rubber between the stitched surfaces is increased by folding back and increasing the strength. Is omitted, but rubber may be interposed between the suturing surfaces in these sewings as in the case of the first and third air bladders 11 and 13.

The cylinder 21 of the charging device 20 is charged with the explosive 2
I opened it by crushing it directly at 3,
There is no need to use a detonating firing pin. As a result, no time loss occurs due to the movement of the firing pin, and
1 can be spouted instantaneously. In this case, the periphery of the gas inflow portion of the air bag 13 is protected by a protective member 13a.
Air bladder 1
3 can be reliably prevented. In addition, since the firing pin is not required, the number of parts can be reduced, and there is an advantage that, unlike the case where the firing pin is used, there is no occurrence of a failure in unsealing with the firing pin pierced.

Further, since the holding portion 10d capable of holding the safety band 14 is provided on the mounting body 10, the safety band 14 is held in advance by the mounting body 10 so that the worker 1 can be mounted on the construction site or the like. Both the safety belt 10 and the safety belt 14 can always be worn at the same time, and the non-wearing of the safety belt 14 can be reliably prevented.

FIG. 15 shows a second embodiment of the fall detecting device, and the same components as those in the above embodiment are denoted by the same reference numerals. That is, the crash detection device 5 shown in FIG.
0 is a low-pass filter 5 on the output side of the acceleration detecting means 31.
By providing 1, the high frequency signal component (including noise) output from the acceleration detecting means 31 corresponding to the operation of the worker 1 can be removed, and the occurrence of malfunction can be further reduced. .

FIG. 16 shows a third embodiment of the fall detecting device, and the same components as those in the above embodiment are denoted by the same reference numerals. That is, the crash detection device 6 shown in FIG.
0 is the speed detecting means 6 in place of the acceleration detecting means 31, the acceleration determining means 33 and the setting device 34 of the first embodiment.
1. It is provided with speed determining means 62 and its setting device 63, and in the first embodiment, the fall acceleration of the worker 1 has decreased from a state where it has reached a predetermined set value or more to a predetermined set value or less. Is detected, the detection condition is that the fall speed of the worker 1 exceeds a predetermined set value. In this case as well, since the speed signal 64 of the speed detecting means 61 has exceeded a predetermined set value and the determination results of the position determining means 37 and the duration determining means 40 are the fall detecting conditions, the falling speed is simply determined. Is not determined to be a crash just by reaching the set value. Therefore, also in the present embodiment, similarly to the above-described embodiment, it is possible to reliably prevent malfunction when jumping or when jumping down a slight step.

FIG. 17 shows a fourth embodiment of the fall detecting device, and the same components as those in the above embodiment are denoted by the same reference numerals. That is, the fall detection device 7 shown in FIG.
0 is the speed detecting means 61, the speed determining means 62 and the setting device 6 of the third embodiment in addition to the acceleration detecting means 31, the acceleration determining means 33 and the setting device 34 of the first embodiment.
In addition to detecting that the fall acceleration of the worker 1 has fallen below a predetermined set value from a state where the fall acceleration has reached a predetermined set value or more, the fall speed of the worker 1 has a predetermined fall speed. The detection condition is set to exceed the set value. In this case, it is determined that the acceleration signal 43 of the acceleration detecting means 31 has decreased from the state where the acceleration signal 43 has reached the predetermined setting value or more to the predetermined setting value or less.
4 has exceeded a predetermined set value.
7 and the determination result of the duration determination means 40 are the crash detection conditions, so that the probability of a malfunction when the worker 1 exercises vigorously or jumps or jumps down a slight step can be further reduced. .

FIG. 18 shows a fifth embodiment of the fall detecting device, and the same components as those in the above embodiment are denoted by the same reference numerals. That is, the crash detection device 8 shown in FIG.
Numeral 0 is provided with a triaxial acceleration detecting means 81 instead of the acceleration detecting means 31 and 32 and the speed detecting means 61 of the fourth embodiment. The three-axis acceleration detecting means 81 detects first, second, and third acceleration detecting means 82, 83, which detect accelerations in X-axis, Y-axis, and Z-axis directions orthogonal to each other.
84, and a total of three acceleration detecting means 82, 8
The vector summing means 8 calculates the vector sum of the 3,84 detection signals.
Determined by 5. Thereby, each acceleration detecting means 8
Regardless of the direction of 2, 83, 84, the combined vector of the vector combining means 85 is detected in accordance with the acceleration application direction. The acceleration signal 43 output from the vector synthesizing unit 85 is input to the acceleration determining unit 33 and the bias component removing unit 86, and the bias component removing unit 8
The acceleration signal 43 input to 6 has components other than the falling direction removed, and is sequentially integrated by the first integration means 35 and the second integration means 36 and input to the position determination means 37. At this time, the speed signal 64 obtained by the integration of the first integration means 35 is input to the speed determination means 62.

In the above configuration, it is determined whether or not the fall detection condition is satisfied by taking the logical product of the determination results of the acceleration determining means 33, the speed determining means 62, the position determining means 37, and the duration determining means 40. can do. In this case, since the sum of the acceleration components detected by the triaxial acceleration detecting means 81 is combined, a fall can be reliably detected even if the posture at the time of the fall changes, and the reliability is improved. be able to. Further, a speed signal 64 is obtained by integrating the acceleration signal 43, and the speed signal 6 is obtained.
Since the position signal 44 is obtained by integrating the number 4, it is not necessary to separately provide another acceleration detecting means and speed detecting means, and the size and cost can be reduced.

In the first to fourth embodiments as well, the speed signal 6 is obtained by integrating the acceleration signal 43.
If the position signal 4 and the position signal 44 are obtained, the acceleration detecting means 31 and the speed detecting means 61 can be omitted.

[0042]

As described above, according to the human fall impact absorbing aids of the first, second and third aspects, malfunctions other than falling down, such as jumping, can be reliably prevented. Therefore, reliability can be improved.

According to the fourth aspect of the present invention, in addition to the effects of the first, second and third aspects, malfunctions other than when the vehicle falls down, such as when jumping down a slight step, are ensured. According to the fall impact absorbing aid for a human body according to the fifth aspect, in addition to the effects of the first, second, third and fourth aspects, it is not necessary to provide a plurality of acceleration detecting means, so that downsizing is achieved. And cost reduction can be achieved.

According to the sixth aspect of the present invention, in addition to the effects of the first, second, third, fourth, and fifth aspects, a fall is reliably detected even when the posture at the time of the fall is changed. Therefore, the reliability can be further improved.

According to the fall impact absorbing aid for a human body according to the seventh aspect, in addition to the effects of the first, second, third, fourth, fifth and sixth aspects, it is possible to prevent forgetting to start operation of the fall detection device. As a result, the fall detection device can be reliably operated.

According to the eighth aspect of the present invention, in addition to the effects of the first, second, third, fourth, fifth, sixth, and seventh aspects, a safety belt is previously held on the wearing body. The worker can always wear a safety belt at a construction site or the like.

According to the ninth aspect of the present invention, there is provided a human body drop impact absorbing aid according to the ninth aspect.
In addition to the effect described above, the handleability during normal wearing is not impaired, which is extremely advantageous for practical use.

According to the tenth aspect of the present invention, there is provided a human body falling impact absorbing aid.
In addition to the effects of 9 and 9, the airtightness of the sewn portion of the air bag can be improved, and air leakage from the seam of the sewn portion of the air bag can be reliably prevented. The strength of the air bag against a drop impact can be significantly increased.

Further, according to the eleventh aspect of the present invention, there is provided a human body falling impact absorbing aid.
In addition to the effects of 8, 9 and 10, the air bag can be inflated instantaneously, which is extremely advantageous for absorbing shock when dropped from a high place.

According to the twelfth aspect of the present invention, in addition to the effect of the eleventh aspect, since the fluid inflow portion of the air bag can be protected, fragments of explosion when the air bag is inflated can be protected. Can reliably prevent the air bag from being damaged.

[Brief description of the drawings]

FIG. 1 is a front view of a fall impact absorbing aid for a human body according to a first embodiment of the present invention.

FIG. 2 is a rear view of a fall impact absorbing aid for a human body.

FIG. 3 is a front view of a coupling member.

FIG. 4 is a perspective view showing an inflated air bag.

FIG. 5 is a side view showing a state of attachment to a human body.

FIG. 6 is a schematic configuration diagram of an air bag.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is an explanatory view showing a method of sewing an air bag.

FIG. 9 is an explanatory view showing a sewing method of the air bag.

FIG. 10 is an explanatory view showing a sewing method of the air bag.

FIG. 11 is a partial cross-sectional side view of the charging device.

FIG. 12 is a diagram illustrating the operation of the charging device.

FIG. 13 is a block diagram of a crash detection device.

FIG. 14 is a circuit configuration diagram of a crash detection device.

FIG. 15 is a block diagram of a crash detection device according to a second embodiment of the present invention.

FIG. 16 is a block diagram of a fall detection device according to a third embodiment of the present invention.

FIG. 17 is a block diagram of a fall detecting device according to a fourth embodiment of the present invention.

FIG. 18 is a block diagram of a fall detecting device according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wearer, 10 ... Wearing body, 10a ... 1st cover part, 1
0b: second cover portion, 11: first air bag, 12: second air bag, 13: third air bag, 13d: protective member, 15, 1
6 ... Coupling member, 18a ... Rubber, 18c ... Coating material, 20 ...
Charging device, 21 ... cylinder, 21a ... sealing part, 22 ... gas discharge member, 22b ... gas discharge port, 23 ... explosive, 24 ... ignition device, 30 ... fall detection device, 31, 32 ... acceleration detection means, 33 ... Acceleration determination means, 35 first integration means, 36
... second integrating means, 37 ... position determining means, 38 ... logical product means, 39 ... time measuring means, 40 ... continuous time determining means, 42 ...
Position detecting means, 50: Fall detecting device, 61: Speed detecting means, 62: Speed determining means, 70: Fall detecting device, 80:
Fall detector 81, triaxial acceleration detecting means.

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 000173429 Hosoya Pyro Co., Ltd. 1847, Sugo, Akiruno-shi, Tokyo (71) Applicant 598071493 Shinko Sewing Co., Ltd. Applicant 000231073 Japan Aviation Electronics Industry Co., Ltd. 1-21-2 Dogenzaka, Shibuya-ku, Tokyo (72) Inventor Kiyoshi Fukaya 1-4-6, Umezono, Kiyose-shi, Tokyo Inside the Industrial Safety Research Institute, Ministry of Labor (72) Inventor Go Kageyama 4-51 Otacho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Kashima Construction Co., Ltd. Yokohama Branch (72) Inventor Mitsuya Uchida 1-2-2 Shinsencho, Shibuya-ku, Tokyo Within Prop Co., Ltd. (847) Inventor Takayuki Miyatake 2-12-10 Iwamotocho, Chiyoda-ku, Tokyo The inner (72) inventor Yuuji Noriaki, Shibuya-ku, Tokyo Dogenzaka 1-chome No. 21 No. 2 Japan Aviation Electronics Manufacturing Co., Ltd. in the F-term (reference) 2E184 HH09 HH18 JA03 KA01 KA11 LB05

Claims (12)

[Claims] 1. A mounting body to be mounted on a human body, an air bag provided at a predetermined portion of the mounting body, an inflation means for inflating the air bag, and a fall detection device for detecting a fall of the human body,
When a fall of a human body is detected by a fall detection device, in a fall impact absorption aid for a human body in which an air bag is inflated by an inflation means, the fall detection device outputs an acceleration signal corresponding to a fall acceleration of the human body. Detecting means, acceleration determining means for determining that the acceleration signal of the acceleration detecting means has reached a predetermined value or less from a predetermined value, and outputting position signals corresponding to the upward and downward directions of the human body, respectively. Position detection means, position determination means for determining that the human body has moved below the initial position based on the position signal of the position detection means, and predetermined value from a state in which the acceleration signal has reached a predetermined value or more by the acceleration determination means If it is determined that the human body has moved below the initial position by the position determination means, A fall impact absorbing aid for a human body, comprising: a fall determination means for outputting a knowledge signal. 2. A mounting body to be mounted on a human body, an air bag provided at a predetermined portion of the mounting body, an inflation means for inflating the air bag, and a fall detection device for detecting a fall of the human body,
When a fall detection device detects a fall of a human body, in a fall impact absorbing aid for a human body in which an air bag is inflated by an inflation means, the fall detection device outputs a speed signal corresponding to a fall speed of the human body. Detecting means, speed determining means for determining that the speed signal of the speed detecting means has reached a predetermined value or more,
Position detecting means for outputting position signals corresponding to the upward and downward directions of the human body, position determining means for determining that the human body has moved below the initial position based on the position signals of the position detecting means, and speed A fall determination unit that outputs a fall detection signal when the determination unit determines that the speed signal has reached a predetermined value or more and the position determination unit determines that the position of the human body has moved below the initial position. A fall impact absorbing aid for the human body, characterized by comprising: 3. A mounting body to be mounted on a human body, an air bag provided at a predetermined portion of the mounting body, an inflation means for inflating the air bag, and a fall detection device for detecting a fall of the human body,
When a fall of a human body is detected by a fall detection device, in a fall impact absorption aid for a human body in which an air bag is inflated by an inflation means, the fall detection device outputs an acceleration signal corresponding to a fall acceleration of the human body. Detecting means, acceleration determining means for determining that the acceleration signal of the acceleration detecting means has reached a predetermined value or less from a predetermined value or more, and speed detecting means for outputting a speed signal corresponding to the falling speed of the human body; A speed determination unit that determines that the speed signal of the speed detection unit has reached a predetermined value or more; a position detection unit that outputs position signals corresponding to an upward direction and a downward direction of a human body; and a position signal of the position detection unit. Position determination means for determining that the human body has moved below the initial position based on the acceleration signal, and a state in which the acceleration signal has reached a predetermined value or more by the acceleration determination means. It is determined that the speed signal has reached the predetermined value or less, and the position of the human body has moved below the initial position by the position determining means. And a fall judging means for outputting a fall detection signal when the judgment is made. 4. The human body according to claim 1, further comprising a time measuring means for outputting the fall detection signal after a determination satisfying the fall determination condition has continued for a predetermined time, and a duration determination means. Drop impact absorption aids. 5. An acceleration detecting means for outputting acceleration signals respectively corresponding to an upward direction and a downward direction of a human body, and a first integrating means for obtaining a velocity signal by integrating an acceleration signal of the acceleration detecting means. 5. The fall impact absorbing aid for a human body according to claim 1, further comprising a second integrating means for integrating the velocity signal to obtain a position signal. 6. The apparatus according to claim 1, wherein said acceleration detecting means comprises a plurality of acceleration detecting means for respectively detecting accelerations in three axial directions orthogonal to each other.
6. The fall impact absorbing aid for a human body according to 3, 4 or 5. 7. A vehicle comprising: a pair of connecting members connected to each other when the mounting body is mounted on a human body; and switch means for activating the fall detecting device by connecting the connecting members. 7. The fall impact absorbing aid for a human body according to claim 1, 2, 3, 4, 5, or 6. 8. The mounting body according to claim 1, further comprising a holding portion capable of holding an arbitrary safety belt.
4. The fall impact absorbing aid for a human body according to 4, 5, 6, or 7. 9. The storage device according to claim 1, wherein a storage portion for storing the air bag in a contracted state is provided in the mounting body.
4. The fall impact absorbing aid for a human body according to 4, 5, 6, 7 or 8. 10. The air bag is sewn from a plurality of fabrics, and an elastic member is interposed between the sewn surfaces of the fabric of the air bag, and the seam of the sewn portion of the air bag and its surroundings are covered with an adhesive covering material. Claims 1 and 2, characterized in that
3. The fall impact absorbing aid for a human body according to 3, 4, 5, 6, 7, 8 or 9. 11. The fluid inflating means has a fluid enclosing container in which a compressed fluid is sealed therein and one end of which is opened so as to be opened by explosion of an explosive, and a fluid discharge port connected to an air bag. A fluid discharge member that covers one end of the container so as to communicate with the fluid discharge port, an explosive disposed in the fluid discharge member near one end of the fluid enclosure, and a detonating unit that explodes the explosive Claim 1, characterized in that:
The drop impact absorbing aid for a human body according to 2, 3, 4, 5, 6, 7, 8, 9 or 10. 12. The fall impact absorbing aid for a human body according to claim 11, wherein the periphery of the fluid inflow portion of the air bag is covered with a protective member having a cushioning property.