JP2021194143A - Air bag device for human body - Google Patents

Abstract

To provide an air bag device for a human body that can achieve both safety for an operator and convenience.SOLUTION: An air bag device for a human body includes: a wearing body 100 in which an air bag 200 is stored; an inflator 400 for introducing air to the air bag 200; a three-axis acceleration sensor 501 for detecting a fall of a human body; a control device 500 for controlling an operation of the inflator 400; and a cancel button 360 for inputting cancel of an inflator control operation. Upon detection of input of the cancel from the cancel button 360, the control device 500 temporarily cancels the control operation of the inflator 400.SELECTED DRAWING: Figure 13

Description

The present invention presents the human body from, for example, the impact when a high-altitude worker such as a construction site falls, the impact when an elderly person, a sick person, a disabled person, etc. falls, the impact when a motorcycle occupant falls, and the like. Regarding human airbag devices for protection.

As a conventional airbag device for a human body of this type, the one described in Patent Document 1 is known. The one described in Patent Document 1 is an airbag device for a human body for protecting a worker from an impact when a worker at a high place such as a construction site falls. This human airbag device includes a vest-shaped wearer worn on the human body, an airbag provided on the wearer body so as to correspond to a predetermined part of the human body, an inflating means for inflating the air bag, and a human body. It includes a drop detection sensor for detecting a fall, a control device that controls an expansion means so as to inflate the airbag based on the detection result of the drop detection sensor, and a power supply device that supplies power to the control device and the like.

This human airbag device is equipped with a three-axis accelerometer as a drop detection sensor. The control device determines whether or not to inflate the airbag based on the output from the acceleration sensor. In the expansion determination algorithm, the airbag is basically inflated when the duration of the falling state exceeds a predetermined value, and the jump is made in consideration of the direction of acceleration, the change in the position calculated from the acceleration, and the like. For the operation of returning to the initial position as in the case, the determination of expansion is not performed.

Japanese Patent No. 3076334

In the above-mentioned human airbag device, when the duration of the fall state exceeds a predetermined value, in other words, when a fall of a predetermined distance or more is detected, the airbag is inflated. Here, it is preferable to set the optimum values for the predetermined values and the predetermined distances from the two different viewpoints of safety and convenience of the operator. That is, if the predetermined value or the predetermined distance is too small, the airbag expands just by jumping off a slight step, which is not convenient. On the other hand, if the predetermined value or the predetermined distance is too large, the airbag may not expand even though the operator has crashed. Therefore, in the conventional airbag device for the human body, the airbag is set to be inflated when a drop of about 1.1 m is detected as a predetermined distance.

On the other hand, in reality, there are many situations in which there is no safety problem even if the worker jumps from a place higher than the set distance if the environment is such that the safety of the worker is sufficiently secured. However, since the conventional human airbag device cannot perform processing according to such a situation, the airbag expands when it jumps from a height of the predetermined distance or more. For this reason, there is a problem that the behavior when the airbag is attached is restricted and the convenience is lacking.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an airbag device for a human body that has both safety and convenience of an operator.

In order to achieve the above object, the present invention relates to a wearing body that houses an airbag inside and is worn at a predetermined part of the human body, a cylinder filled with a pressurized gas that inflates the airbag, and the cylinder. An inflator having an operating means for releasing the gas sealing state by the lid and introducing gas into the airbag, a drop detection sensor for detecting the fall of a human body, and the cylinder based on the detection result by the fall detection sensor. The control means includes a control means for controlling the inflator so as to release the sealed state of the gas by the lid, and a cancellation input means for inputting cancellation of the control operation of the inflator, and the control means inputs a cancellation from the cancellation input means. When detected, the control operation of the inflator is temporarily canceled.

According to the present invention, when the operator inputs a cancellation from the cancellation input means, the control operation of the inflator is temporarily canceled, so that the expansion of the airbag due to the operation of the operator can be prevented during the cancellation period. In this way, since the operator can clearly indicate the period during which the airbag should not be inflated, it is possible to set the airbag to be inflated with a more sensitive operation in the control operation of the inflator in normal times. can. That is, convenience is improved and safety in normal times is improved.

Front view of an airbag device for a human body according to an embodiment of the present invention. Rear view of the airbag device for the human body A diagram illustrating a state in which a human airbag device is worn. Upper surface development view of the airbag device for the human body Lower outer surface development view of the airbag device for the human body Floor plan of airbag Perspective view of the inflated state of the airbag The figure explaining the inflated state of an airbag The figure which shows the back surface of the lining of the human body airbag device. Partial disassembled plan view of the buckle Top view of buckle Partial cross-sectional side view of the inflator Configuration diagram of control device and power supply device Flow chart explaining the operation of the airbag device for the human body (1/2) Flow chart explaining the operation of the airbag device for the human body (2/2) Flowchart explaining the cancel mode

An airbag device for a human body according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an airbag device for a human body that protects the human body from an impact when a high-place worker falls at a construction site or the like will be described. First, the structure of the wearable body and the airbag worn by the worker will be described with reference to FIGS. 1 to 12.

As shown in FIGS. 1 and 2, the human airbag device 1 according to the present embodiment includes a wearable body 100 worn by a worker and an airbag that is an air bag housed inside the wearable body 100. It has 200 and.

The wearing body 100 includes a wearing body main body 110 corresponding to the back surface, shoulders, chest, and waist of the human body. The wearing body body 110 includes a back portion 110a corresponding to the central portion of the back surface of the human body, a pair of left and right shoulder hanging portions 110b corresponding to the upper back portion, the shoulder portion and the chest portion of the human body and extending upward from the upper portion of the back portion 110a, and the human body. A pair of left and right lumbar portions 110c corresponding to the left and right lumbar portions and extending from the lower portion of the back surface portion 110a to the left and right are integrally formed.

Waist belts 111 and 112 are attached to the ends of the pair of left and right waist portions 110c of the wearing body main body 110. The ends of the pair of left and right waist belts 111 and 112 are removable by the buckle 300 which is a connecting member. The waist belts 111 and 112 and the buckle 300 fix the wearing body body 110 to the human body. The details of the buckle 300 will be described later.

Suspension belts 113 and 114 are attached to the ends of the shoulder straps 110b of the wearer body 110. The suspension belts 113 and 114 are detachably connected to the ends of the waist belts 111 and 112 via buckles 113a and 114a for adjusting the length. Further, on the connecting side of the hanging belts 113 and 114 with the shoulder straps 110b, connecting belts 113b and 114b for connecting the hanging belts 113 and 114 to each other are attached. A male portion 113c constituting a buckle, which is a coupling member, is attached to the tip of the connecting belt 113b, and a female portion 114c constituting the buckle, which is a coupling member, is attached to the tip of the connecting belt 114b.

A shoulder pad 115 is attached to a position corresponding to the apex of the shoulder of the human body at the center of the shoulder rest 110b of the body body 110. A band-shaped reflective material 116 is attached to the front side of the wearing body main body 110.

The human airbag device 1 according to the present embodiment is configured so that a worker wearing a full harness type fall prevention device 900 can wear it from above the fall prevention device 900. Here, as shown in FIG. 3, the fall prevention device 900 is provided with a D ring 901 for detachably connecting the lanyard 910 to the upper part of the back surface of the human body. The wearing body 100 of the human body airbag device 1 mounts the lanyard 910 on the D ring 901 without covering the D ring 901 even if the human body airbag device 1 is mounted on the fall prevention device 900. However, it is formed so that the fall prevention device 900 can function normally. That is, the size of each part of the wearing body 100 is such that the D ring 901 is above the back surface portion 110a of the wearing body main body 110 and a pair of shoulder hanging parts when the fall prevention device 900 and the human body airbag device 1 are attached. It is specified to be located between 110b.

The wearing body main body 110 is configured by superimposing the outer material 120 and the lining 130 in the thickness direction. The airbag 200 is arranged in a folded state in the space between the outer material 120 and the lining material 130.

The outer material 120 is divided into an upper outer material 121 corresponding to the upper part of the back surface 110a and the left and right shoulder rests 110b, and a pair of left and right lower outer materials 122 corresponding to the left and right halves of the lower part of the back surface 110a and the left and right waist portions 110c. Has been done. The lower edge portion of the upper outer material 121 overlaps the upper edge portion of the pair of left and right lower outer materials 122 with a predetermined width. The facing edges of the pair of left and right lower outer materials 122 overlap each other with a predetermined width.

As shown in FIG. 4, the upper outer material 121 is connected to the edge portion of the lining 130 by sewing at the left and right center side (inner side) edges of the left and right shoulder hanging portions 110b. The upper outer material 121 is connected to the edge of the lining 130 by a snap button 121a at the left and right side (outer) edges of the left and right shoulder hanging portions 110b so as to be disconnected by a predetermined force. The lower edge portion of the upper outer material 121 is connected to the upper edge portion of the lower outer material 122 by a snap button 121b so as to be disconnected by a predetermined force.

As shown in FIG. 5, the lower outer material 122 is connected to the edge of the lining 130 by sewing from the left and right edges of the back surface 110a to the upper edge of the waist 110c. The lower edge portion of the lower outer material 122 is connected to the edge portion of the lining 130 by a snap button 122a so as to be disconnected by a predetermined force. The upper edge portion of the lower outer material 122 is connected to the lower edge portion of the upper outer material 121 by a snap button 122a so as to be disconnected by a predetermined force. The pair of left and right lower outer materials 121 facing each other are connected to each other by snap buttons 122c so as to be disconnected by a predetermined force.

The lining 130 is composed of a mesh member having good breathability and a cushioning material for absorbing impact.

An upper fastener 131 and a lower fastener 132, which are connecting members for detachably attaching the airbag 200, are attached to the surface side of the lining 130, that is, the surface side facing the outer material 120 and the inside of the outer material 120. There is. The upper fastener 131 is connected to the edge of the lining 130 by sewing at the left and right center side (inside) edges of the left and right shoulder straps 110b. The lower fastener 132 is connected to the edge of the lining 130 by sewing at the lower edge of the back surface 110a.

The snap buttons 133 are provided so as to be detachable from the snap button 121a of the upper outer material 121 at the left and right side edges (outside) of the lining 130, that is, the portion corresponding to the snap button 121a of the upper outer material 121. Further, at the lower edge portion of the lining 130, that is, a portion corresponding to the snap button 122a of the lower outer material 122, the snap button 134 is provided so as to be detachable from the snap button 122a of the lower outer material 122.

The airbag 200 is made of a highly airtight and durable fabric (for example, all-aromatic polyester), and is formed in a bag shape by sewing or heat-sealing the edges of such a fabric. The airbag 200 is arranged in the space between the outer material 120 and the lining 130 of the wearer body 110 in a folded and contracted state.

As shown in FIGS. 6, 7, and 8, the air bag 200 is provided at a portion corresponding to the circumference of the neck of the human body and is formed so as to cover both sides and the back of the neck, and the back of the human body. The back part 220 is provided in the part corresponding to the human body and is long in the vertical direction along the center of the back, and is provided in the part 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. It is provided with a body portion 230. The neck 210, the back 220, and the body 230 communicate with each other and are integrally formed. The neck portion 210 is formed with a fused portion 211 in which the front fabric and the back fabric are bonded by heat fusion. Similarly, the body portion 230 is formed with a fused portion 231 in which the front fabric and the back fabric are bonded by heat fusion. The fused portions 211 and 231 control the shapes of the neck portion 210 and the body portion 230 at the time of expansion and the amount of air required for the expansion of the airbag 200. An intake port 201 is formed in the body portion 230. An inflator, which will be described later, is connected to the intake port 201.

A fastener 202 for detachably connecting to the lining 130 is provided on the edge of the neck 210 of the airbag 200. When the fastener 202 is divided into three in the length direction, each divided area at both ends is connected to the upper fastener 131 of the lining 130, respectively. On the other hand, the central divided region when divided into three in the length direction is not connected to the lining 130. A fastener 203 for detachably connecting to the lining 130 is provided on the lower edge of the body 230 of the airbag 200. The fastener 203 is connected to the lower fastener 132 of the lining 130. In addition to the fastener, other means such as a button, a snap button, and a hook-and-loop fastener may be used as the connecting means. However, the connecting means shall be capable of connecting with a strength that does not release the connection with the lining 130 even when the airbag 200 expands.

On the back surface of the lining 130, that is, the surface facing the human body, as shown in FIG. 9, a control device bag 135 for accommodating a control device described later, a power supply bag 136 for accommodating a power supply device described later, and a power supply device bag 136 described later are provided. An inflator storage bag 137 for storing the inflator is detachably provided. A hole 138 is formed in the lining 130 side of the inflator storage bag 137 and the lining 130 at a position overlapping the inflator storage bag 137 to enable the connection between the inflator and the airbag 200.

With such a configuration, when the airbag 200 is expanded by the operation of the inflator, it cannot fit in the space between the outer material 120 and the lining 130, and the snap button which is a connecting member of each member in the wearer body 110 cannot be accommodated. The connected state is released, and the wearable body body 110 bulges outward.

Next, the configuration of the buckle 300, which is a connecting member that detachably connects the ends of the pair of left and right waist belts 111 and 112, will be described in detail with reference to FIGS. 10 and 11.

The buckle 300 includes a male portion 310 and a female portion 320 that are detachably connected to each other, a magnet 330 provided in the male portion 310, and two reed switches 341 and 342 provided in the female portion 320 and connected in series. It is provided with a storage unit 350 for accommodating switches 341 and 342. Further, the buckle 300 includes a cancel button 360 provided on the surface of the female portion 320.

The male portion 310 is made of a molded product of synthetic resin, and has a main body portion 311 to which one waist belt 111 is connected. A protruding portion 312 is provided on one end side of the main body portion 311 and a pair of lock pieces 313 are provided on both sides of the main body portion 311 in the width direction. The protruding portion 312 is formed so as to extend from the center of the main body portion 311 in the width direction to the longitudinal direction of the main body portion 311, and a fixing portion 312a for fixing the magnet 330 is provided on the back side of the tip portion thereof. Each lock piece 313 is composed of an elastic piece portion 313a that can be elastically deformed in the width direction of the main body portion 311 and an operation portion 313b formed at the tip of each elastic piece portion 313a. When pressed inward in the width direction, each operation portion 313b is displaced inward in the width direction by the elastic deformation of the elastic piece portion 313a. In this case, the side surface of the operation unit 313b is provided with a recess 313c in which the fingertip can be locked.

The female portion 320 is made of a molded product of synthetic resin, and has a main body portion 321 to which the other waist belt 112 is connected. The main body portion 321 is formed in a hollow shape with one end surface open, and the opening portion forms an insertion port 321a into which the protruding portion 312 of the male portion 310 and each lock piece 313 are inserted. A pair of cutout portions 321b are provided on both sides of the main body portion 321 in the width direction, and each cutout portion 321b is opened so that the operation portion 313b of the lock piece 313 is exposed to the outside. In this case, the male portion 310 and the female portion 320 are locked to each other by locking each operation portion 313b to the edge portion of the notch portion 321b.

The magnet 330 is a thin cylindrical permanent magnet, and is attached to the fixing portion 312a of the male portion 310 from the back side of the main body portion 311.

The reed switches 341 and 342 are well-known switch elements that, when the magnet 330 is brought close to each other, the contacts inside the glass tube come into contact with each other due to the magnetic force of the magnet 330 to conduct conduction between both terminals. In the present invention, one terminal of the reed switch 341 is connected to one terminal of the reed switch 342. That is, the reed switches 342 and 342 are connected in series. The other terminals of the reed switches 341 and 342 are connected to the lead wire 343, respectively, and are connected to the power supply device described later via the lead wire 343.

The storage portion 350 is provided on the other end side of the main body portion 321 of the female portion 320, and accommodates a part of the lead wire 343 in addition to the reed switches 341 and 342. The front surface of the main body portion 321 of the storage portion 350 is open. Further, the storage portion 350 has a lid 355 that closes the open surface thereof, and the lid 355 is formed in a plate shape so as to cover the open surface of the storage portion 350.

The cancel button 360 is connected to the control device 500 and functions as a cancel input means for inputting a cancel instruction for the control operation of the inflator 400 described later in the control device 500. The cancel button 360 comprises a well-known momentary type switch element.

In this buckle 300, when the protruding portion 312 of the male portion 310 and each lock piece 313 are inserted into the main body portion 321 of the female portion 320, the operation portion 313b of each lock piece 313 becomes the inner edge portion of the insertion port 321a of the female portion 320. Each lock piece 313 is inserted into the main body portion 321 while elastically deforming inward in the width direction of the main body portion 321. Subsequently, when the operation portion 313b of each lock piece 313 reaches the notch portion 321b of the female portion 320, each lock piece 313 is restored toward the outside in the width direction of the main body portion 321 and each operation portion 313b is a notch portion. While being exposed to the outside from 321b, each operating portion 313b is locked to the edge portion of the cutout portion 321b, and the male portion 310 and the female portion 320 are locked. At that time, the magnet 330 attached to the protruding portion 312 of the male portion 310 is close to the reed switches 341 and 342 in the accommodating portion 350 of the female portion 320, and the reed switches 341 and 342 are turned on by the magnetic force of the magnet 330. .. That is, in conjunction with the connection and disconnection of the buckle 300, the series circuits of the reed switches 341 and 342 that function as power switches are turned on and off.

The human airbag device 1 includes an inflator 400, a control device 500, and a power supply device 600 as means for deploying the airbag 200, that is, as a means for inflating the airbag.

As shown in FIG. 12, the inflator 400 introduces gas into the airbag 200 by releasing the sealed state of the gas by the cylinder 410 filled with the pressurized gas for expanding the airbag 200 and the lid 420 of the cylinder 410. It is equipped with an actuating device 430. The actuating device 430 includes an explosive 431 and an ignition device 432, and drives the ignition device 432 by the electric power of the ignition signal supplied from the power supply device 600 to explode the explosive 431, thereby destroying the lid 420 of the cylinder 410. .. The gas in the cylinder 410 whose sealed body is released is supplied to the airbag 200 through the gas discharge hole 433 and the intake port 201.

Next, the control system of the human body airbag device according to the present embodiment will be described with reference to FIGS. 13 to 15. As shown in FIG. 13, the control device 500 includes a 3-axis acceleration sensor 501, a control unit 502, a storage unit 503, and a notification unit 504. The power supply device 600 includes a battery 601 which is a primary battery, a series circuit of the lead switches 341 and 342 described above as a power supply switch, a power supply circuit 610 for the control device 500, and a drive circuit 620 for driving the ignition device of the inflator 400. It is equipped with.

The control device 500 is housed in the above-mentioned control device bag 135 in a state of being housed in a housing (not shown). The power supply device 600 is housed in the power supply device bag 136 described above in a state of being housed in a housing (not shown).

The power supply circuit 610 is energized when the power supply switch including the series circuit of the reed switches 341 and 342 is turned on, and supplies a constant voltage DC power supply to the control device 500.

The drive circuit 620 includes a capacitor 621 capable of extracting a large current with a large capacity, a charging circuit 622 that stores the power of the battery 601 in the capacitor 621 based on a control signal from the control device 500, and a capacitor based on the control signal from the control device 500. It is provided with an ignition control unit 623 that outputs the electric current of 621 to the ignition device of the inflator as an ignition signal.

The 3-axis accelerometer 501 is a sensor used to detect a worker's fall, more specifically, a worker's free fall, and to detect a fall distance in a free fall state, and is a sensor used in the front-back direction (X) of the worker. Axis), left-right direction (Y-axis) and up-down direction (Z-axis) acceleration are detected respectively.

The storage unit 503 is composed of a non-volatile storage element, is connected to the 3-axis angular velocity sensor 501 via the control unit 502, and stores the acceleration value detected from the time of the latest acceleration detection to a predetermined time T before. There is. That is, the storage unit 503 stores the acceleration value detected within the predetermined time T (for example, 1 second), and when the latest acceleration value is stored, the oldest acceleration value is erased.

The notification unit 504 includes a well-known sounding element such as a piezoelectric speaker and a drive circuit thereof.

The control unit 502 is configured by a well-known microcomputer equipped with an arithmetic unit, a memory, a timer, and the like. The control unit 502 is connected to the 3-axis acceleration sensor 501, the storage unit 503, the notification unit 504, and the power supply device 600, respectively. Further, the control unit 502 is connected to the cancel button 360.

The control unit 502 is supplied with power from the power supply circuit 610 of the power supply device 600 only while detecting that the buckle 300 is in the coupled state by the series circuit of the reed switches 341 and 342, and controls the operation of the inflator 400. Further, when the cancel instruction is input by the cancel button 360, the control unit 502 enters the cancel mode in which the operation control of the inflator 400 is canceled for a predetermined time. Hereinafter, the operation of the control unit 502 will be described in detail.

As shown in FIG. 14, the control unit 502 first confirms whether the control device 500 and the power supply device 600 are normal as one of the initial processes (step S1). For example, it is confirmed whether or not a signal is detected from the 3-axis accelerometer 501. When the control unit 502 detects an abnormality, the control unit 502 notifies a predetermined alarm (for example, a continuous alarm sound) by using the notification unit 504 (steps S2 and S3).

Next, the control unit 502 outputs a control signal to the charging circuit 622 of the drive circuit 620 as one of the initial processes, and starts the charging process for the capacitor 621 (step S4). This charging process takes several seconds to several tens of seconds. When the control unit 502 instructs to start the charging process, the control unit 502 starts a process of notifying a predetermined notification sound (for example, an intermittent alarm sound) using the notification unit 504 (step S5). Then, the control unit 502 ends the notification process when charging is completed (steps S6 and S7).

Since the initial processing is completed by the above, the control unit 502 starts the operation control of the inflator 400 as shown in FIG. Here, the control unit 502 operates as a normal mode as the initial operation mode. The operation mode of the control unit 502 is stored in a predetermined storage unit, and the control unit 502 can recognize the current operation mode by referring to the storage unit. In the normal mode, the control unit 502 starts the storage process of storing the detected value of the 3-axis acceleration sensor 501 in the storage unit 503 (step S11), and monitors the detected value of the 3-axis acceleration sensor 501. Based on the detected value, it is determined and detected whether or not the human airbag device 1 has started free fall (step S12).

When the control unit 502 detects the start of free fall, the control unit 502 calculates the fall distance of the human airbag device 1 in the free fall state from the start of free fall based on the detection value of the 3-axis acceleration sensor 501 (step S13). When the calculated fall distance reaches a predetermined distance (for example, 85 cm), if the current operation mode is not the cancel mode, that is, the normal mode, a control signal is output to the drive circuit 620 to operate the inflator 400. 430 is operated (steps S14 to S16). Then, the control unit 502 stops the storage process of storing the detection value of the 3-axis acceleration sensor 501 in the storage unit 503 after a predetermined time (for example, 1 second) has elapsed after the operation control of the operation device 430 of the inflator 400 is performed (for example, 1 second). Step S15), the operation is terminated. On the other hand, even when the fall distance is a predetermined distance (for example, 85 cm), if the current operation is in the cancel mode, the process is transferred to step S12 without controlling the operation of the inflator 400. That is, in the normal mode, the airbag should be deployed, but the operation control of the inflator 400 is canceled while the cancellation is input by the cancel button 360 and the airbag is in the cancel mode.

On the other hand, when the control unit 502 detects that the free fall has started and then has escaped from the free fall state before the fall distance reaches a predetermined distance, the process shifts to the step S12 (step S17). It should be noted that this process is performed, for example, when a worker jumps to descend a low step.

The control unit 502 performs the interrupt processing shown in FIG. 16 by pressing the cancel button 360.

When the control unit 502 detects that the cancel button 360 has been pressed and held, in other words, when it detects that the cancel button 360 has been on for a predetermined time (for example, 1 second) (step S21), the control unit 502 enters the cancel mode. Perform transition processing. On the other hand, even when the cancel button 360 is pressed, if the on is not continued for a predetermined time, the normal mode is continued. This makes it possible to prevent the start of cancellation by hitting the cancel button 360 somewhere or erroneously operating it.

In the cancel mode transition process, the control unit 502 shifts to the cancel mode (step S21) and starts the notification of a predetermined warning using the notification unit 504 (step S23). Further, the control unit 502 stores the current time as the cancellation process start time in a predetermined area of the storage unit 503 (step S24). Then, the control unit 502 sets a predetermined time (for example, 3 seconds) in the timer to measure the remaining time until the end of the cancel mode, and starts the measurement by the timer (step S25).

When the timer becomes zero and the end time of the cancel mode is reached, a timer interrupt is generated, and the control unit 502 ends the notification by the notification unit 504 and shifts from the cancel mode to the normal mode (steps S31 and S32).

According to such an airbag device for the human body, when the operator inputs a cancel from the cancel button 360, the control operation of the inflator 400 is temporarily canceled, so that the air generated by the operator's operation during the cancellation period is temporarily canceled. The expansion of the bag 200 can be prevented. In this way, since the operator can clearly indicate the period during which the airbag 200 should not be inflated, the setting is such that the airbag 200 is inflated with a more sensitive operation in the control operation of the inflator 400 in normal times. can do. Specifically, the threshold value of the fall distance due to free fall, the threshold value of the fall time, etc., which determines the deployment of the inflator 400, can be set to a value smaller than that of the conventional one. That is, convenience is improved and safety in normal times is improved.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various improvements and changes may be made without departing from the gist of the present invention. ..

For example, in the above embodiment, the momentary type cancel button 360 is used as the cancel input means, the long press of the cancel button 360 is set as the cancel start instruction, and the control operation of the inflator 400 is canceled for a predetermined time from the input of the cancel start instruction. However, the control operation of the inflator 400 may be canceled immediately by detecting the pressing of the cancel button 360.

Further, in the above embodiment, the control operation of the inflator 400 is canceled for a predetermined time after the cancellation instruction is input from the cancel button 360, but during the period when the cancel instruction is input from the cancel button 360, the inflator is used. The control operation of 400 may be canceled. In this case, the cancel button 360 may use not only a momentary type switch but also an alternate type switch. Further, as the cancel button 360, a switch having a physical or electrical mechanism that automatically turns off after a predetermined time has elapsed from the on state may be used.

Further, in the above embodiment, the cancel button 360 is attached to the buckle 300, but the attachment position is arbitrary, and it may be attached to another position. Further, the connection form between the cancel button 360 and the control device 500 does not matter, and the connection may be made by wire or wirelessly.

Further, in the above embodiment, the alarm by sound is issued during the cancel mode, but other alarm means may be used, or a plurality of alarm means may be combined. As another reporting means, for example, firing by light may be mentioned.

Further, in the above embodiment, the snap button is used as the connecting means between the outer material 120 and the lining material 130, but other means such as a button and a hook-and-loop fastener may be used. However, the connecting means shall be capable of connecting with a strength at which the connection between the outer material 120 and the lining 130 is released by the expansion of the airbag 200.

Further, in the above embodiment, a reed switch that is turned on / off by magnetism is used as a switch element constituting a power switch that is turned on / off in conjunction with the coupling of the buckle, but other switch elements may be used. For example, a micro switch may be used.

Further, in the above embodiment, an explosive type inflator that destroys the lid of the cylinder by the explosion of the explosive is used as the inflator, but the elastic force accumulated in the elastic body such as a spring is urged to the needle to urge the needle. A mechanical inflator that destroys the lid of the cylinder may be used, or another type of inflator may be used.

Further, in the above embodiment, the 3-axis accelerometer is used as the fall detection sensor for detecting the fall of the human body, but another sensor may be provided. Examples of other sensors include a 3-axis angular velocity sensor and the like. Further, the algorithm for detecting the fall of the human body in the above embodiment may be improved or changed in various ways.

Further, in the above embodiment, when the airbag is deployed, the detection value of the drop detection sensor at a predetermined time before and after the deployment is controlled to be maintained in the storage unit. In addition to this, the air is controlled. Even if the bag is not unfolded, when an impact exceeding a predetermined value is detected, the detection value of the drop detection sensor at a predetermined time before and after this impact detection may be controlled to be maintained in the storage unit. good.

Further, in the above embodiment, the airbag device for the human body for protecting the human body from the impact when a high-place worker such as a construction site is dropped has been described, but the airbag device for other purposes may also be used. The present invention can be applied. For example, it protects the human body from the impact of a fall of an elderly person, a sick person, a disabled person, etc., the impact of a fall of a motorcycle occupant, or the impact of a fall of a slope worker in a forest or construction site. It may be an airbag device for the human body.

1 ... Airbag device for human body 100 ... Wearing body 110 ... Wearing body body 120 ... Outer material 121 ... Upper outer material 122 ... Lower outer material 130 ... Lining 200 ... Airbag 201 ... Intake port 300 ... Buckle 360 ... Cancel button 400 ... Inflator 410 ... Bomb 420 ... Lid 430 ... Actuating device 500 ... Control device 501 ... 3-axis acceleration sensor 503 ... Control unit 504 ... Storage unit 505 ... Notification unit 600 ... Power supply device 601 ... Battery 610 ... Power supply circuit 620 ... Drive circuit 621 ... Capacitor 622 ... Charging circuit 623 ... Ignition control unit

Claims (6)

A wearable body that stores an airbag inside and is worn on a predetermined part of the human body,
A cylinder filled with a pressurized gas that inflates the airbag, and an inflator having an operating means for releasing the sealed state of the gas by the lid of the cylinder and introducing the gas into the airbag.
A fall detection sensor for detecting the fall of the human body,
A control means for controlling the inflator so as to release the sealed state of the gas by the lid of the cylinder based on the detection result by the drop detection sensor.
It is equipped with a cancel input means for inputting the cancellation of the control operation of the inflator.
An airbag device for a human body, wherein the control means temporarily cancels the control operation of the inflator when a cancellation input is detected from the cancellation input means. The cancel input means comprises a switch element.
The human airbag device according to claim 1, wherein the control means cancels the control operation of the inflator while the switch element is on. The cancel input means comprises a momentary switch element.
The human airbag device according to claim 1, wherein the control means cancels the control operation of the inflator for a predetermined time after detecting the on of the momentary switch element. The cancel input means comprises a momentary switch element.
The human airbag device according to claim 1, wherein the control means cancels the control operation of the inflator for a predetermined time after detecting that the momentary switch element is in the ON state for a predetermined time. The human airbag device according to any one of claims 1 to 4, wherein the control means includes a warning means for issuing a predetermined warning while canceling the control operation of the inflator. The airbag device for a human body according to any one of claims 1 to 5, wherein the control means stores the cancellation time of the control operation of the inflator in the storage means.

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