JP2007315457A - Cylinder unsealing device, air bag type protector, and initial setting method of cylinder unsealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder unsealing device which can be recycled even after unsealing a cylinder by mounting a new cylinder, an air bag type protector using the cylinder unsealing device, and an initial setting method of the cylinder unsealing device for mounting a cylinder in an unsealable state to the cylinder unsealing device. <P>SOLUTION: The cylinder unsealing device is equipped with: a main body 20 having a hole 20b extending to the back of a female screw 20a for mounting a cylinder 18a; a driving member 24 disposed in the hole 20b and urged toward the cylinder 18a; a needle 26 mounted to the driving member 24 so that its tip goes toward the end face 18aa of the cylinder 18a; a first locking part for locking the movement of the driving member 24 at a position where the needle 26 is away from the end face 18aa; a release control means 36 for penetrating the needle 26 through the outer wall of the end face 18aa and unsealing the cylinder 18a by releasing the locking of the first locking part; and a second locking part 20bb for locking the drive of the driving member 24 toward the end face 18aa at a predetermined position where the needle 26 penetrates the outer wall. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cylinder opening device that opens a cylinder filled with a fluid, an air bag type protector that uses the cylinder opening device to prevent damage to a predetermined part of the body, and an initial setting method for the cylinder opening device. .

  When a person falls, they may suffer damage such as broken bones. Especially in elderly people and osteoporosis patients, bone strength is weaker than young healthy people, and when falling, hit the side of the buttocks on the ground or floor to fracture the femoral neck. There are many. In particular, when an elderly person fractures the femoral neck, it is statistically known that a bedridden state or dementia (dementia) often occurs.

Therefore, conventionally, clothing such as pants equipped with a shock absorbing pad has been used so as not to fracture the femoral neck and the like during a fall. Such a garment with a shock absorbing pad is disclosed in Patent Document 1.
Patent Document 1 includes shock absorbing pads such as underpants, trousers, and undershirts, which are provided with shock absorbing pads at corresponding positions of a predetermined part of the body that is often hit during a fall (for example, a hip near the femoral neck). Clothing is listed.

  However, in clothing with a shock absorbing pad, there is a problem that the shock absorbing effect is insufficient for a strong shock, and when the shock absorbing pad is formed thick in order to increase the shock absorbing property, There is a problem that the movement of the corresponding part (joint or the like) of the shock absorbing pad is hindered.

In order to solve such a problem, it is considered to use an air bag type protector.
Patent Document 2 discloses a sensor (physiological sensor and physical sensor) that detects the occurrence of an unexpected accident, a gas cylinder that is opened according to a signal from the sensor, and a gas in the gas cylinder that is opened when the gas cylinder is opened. A protective device (airbag type protector) including a protective bag (airbag) that flows in and deploys is described.
According to such an air bag type protector, compared with a protector equipped with a conventional shock absorbing pad, it absorbs strong shocks appropriately and prevents body damage, and when the bag is in a deflated state, There is an advantage that there is no problem of obstructing the movement of the corresponding part (such as a joint).

Patent Document 2 also describes a mechanism (device) for opening a gas cylinder.
One of gas cylinder opening mechanisms (apparatuses) described in Patent Document 2 is shown in FIGS. 19 (a) and 19 (b). A spring 37 is accommodated in the cover ring 32 of the gas cylinder 29. A small solenoid 17 is fixed to the side outer wall of the cover ring 32, and the rod 17 a of the solenoid 17 is disposed through a through hole 32 b formed in the side wall of the ring 32. A disc 39 is provided at the tip of the spring 37, and the rod 17 a of the solenoid 17 that is always in an extended state compresses the spring 37 to stop the disc 39. A pipe 40 is fixed at the center of the disk 39, and the tip 40a of the pipe is cut obliquely and formed sharply.

  When the control unit (controller) inputs a signal (valve opening signal) to the solenoid 17 when the sensor monitors the occurrence of an unexpected accident, the rod 17a is retracted as shown in FIG. 19 (c). Then, the elbow of the disc 39 is released, the spring 37 held in a compressed state is extended and moves downward in the disc 39, and the pipe 40 breaks through the lid 41 at its sharp tip 40a. Thereby, the compressed gas in the gas cylinder 29 is discharged | emitted from the pipe 40 outside, and is supplied in a protective bag through the communicating hole 32a.

JP 2003-3004 A JP 2004-352113 A (FIG. 9, paragraphs 0034-0035)

  By the way, in order to deploy an airbag used for body protection, the pressure inside the cylinder is required to be high to some extent. For example, a cylinder having an internal pressure of about 60 atm is usually used. And in order to hold | maintain this internal atmospheric pressure safely, the iron plate etc. of about 0.5 mm thickness are generally used for the outer wall of a cylinder. In order to break down the outer wall of such a cylinder with a sharp needle or pipe by means of a gas cylinder opening device as described in Patent Document 2, a force of several tens kgF is applied by a biasing member such as a spring. Need to be generated.

  Since the gas cylinder opening device described in Patent Document 2 once opens, it is difficult to re-set the spring having the strong urging force as described above to reset a new cylinder. It is necessary to dispose of the apparatus together and replace it with a new one, which causes a problem of being uneconomical.

  Further, in the gas cylinder opening device described in Patent Document 2, a force of several tens of kg F generated by the spring 37 is received by the rod 17a of the solenoid 17, and the rod 17a of the solenoid 17 is moved in a direction to be pulled out from the cover ring 32. As a result, the spring 37 is opened.

  However, in this mechanism, since the strong biasing force by the spring 37 is applied to the rod 17a as it is, the frictional force between the rod 17a and the disc 39 is very large, and a very large force is applied to the driving of the rod 17a by the solenoid 17. Necessary. Therefore, there is a problem that a small solenoid 17 cannot be used, and an increase in size and weight of a cylinder opening device is inevitable. In particular, when using an airbag-type protector to prevent a broken bone or the like of an elderly person or the like, a small and lightweight one is required.

The present invention has been made to solve the above-mentioned problems, and the main purpose of the present invention is to re-use a cylinder opening device that can be reused by attaching a new cylinder after the cylinder has been opened once, an air bag type protector using the same, Another object of the present invention is to provide an initial setting method for a cylinder opening device that is attached to the cylinder opening device in a state where the cylinder can be opened.
A secondary purpose thereof is to provide a cylinder opening device that can be configured to be small and lightweight, and an air bag type protector using the same.

The cylinder opening device according to the present invention has the following configuration in order to solve the above problems. That is, a female screw portion that can be screwed into a screw portion formed on the outer peripheral surface of the end portion of the cylinder for attaching a cylinder filled with fluid is provided on one end side and extends to the back of the female screw portion. A body formed with a hole, and a driving member disposed in the hole and biased toward an end face of a cylinder attached to the female screw by a biasing member provided in the body; A needle attached to the drive member such that the tip is directed to the end surface of the cylinder, and the movement of the drive member by the urging force of the urging member are locked at a position where the needle is separated from the end surface of the cylinder. When the first locking portion and a predetermined trigger signal are input, by releasing the locking of the first locking portion, the driving member is driven by the biasing force of the biasing member, and the needle is Penetrate the outer wall of the end face of the cylinder The release control means for opening the cylinder and the drive of the drive member toward the end face of the cylinder due to the release of the locking of the first locking portion are locked at a predetermined position where the needle penetrates the outer wall. And a second locking portion.
According to this, since the driving member is locked in the hole by the second locking portion even after the cylinder is opened, the cylinder opening device is reused by pushing the driving member against the biasing force of the biasing member. be able to.

Further, the second locking portion is configured by a small diameter portion formed so that an inner diameter of the hole portion is smaller than a diameter of the drive member, and the drive member has the small diameter portion when the drive member is in the predetermined position. The main body is formed with a communication hole connecting the hole and the outer surface on the female screw part side of the small diameter part as a flow path for fluid flowing out from the cylinder. Features.
According to this, while being able to implement | achieve the flow path of the fluid which flows out from a cylinder with a simple mechanism, the size in a cylinder opening apparatus can be reduced in size and weight by utilizing the space in a main body effectively.

Further, the needle is formed with a flow path that opens at least on a side surface for guiding the fluid in the cylinder to the outside of the cylinder when penetrating the outer wall of the cylinder.
According to this, the fluid can be suitably allowed to flow out of the cylinder while the needle is stuck in the outer wall of the cylinder.

In addition, the hole is provided in a through-hole penetrating the main body, and the first locking portion includes a wire having one end attached to the driving member, and the other end of the wire attached to one end surface. A rod-shaped member that protrudes from the opposite side of the female threaded portion of the hole to the outside of the main body, and is formed on the outer surface of the main body. The one end surface of the bar-shaped member is radially displaced from the wire attachment position. A convex portion that is in contact with a portion of the rod-like member and is engaged with the movement of the one end of the rod-shaped member by the biasing force of the biasing member, and the portion of the one end surface of the rod-shaped member is latched by the convex portion. And a stopper portion that locks the other end portion against a rotational moment generated at the other end portion of the rod-like member by the urging force of the urging member, and the release control means includes the predetermined control unit. When a trigger signal is input, the stopper And cancels the engagement of the end portion.
According to this, since the one end surface of the rod-shaped member is locked by the convex portion against the biasing force of the biasing member, the rotation moment generated at the other end portion is locked by the stopper portion. According to the principle, the force of locking by the stopper portion can be set weak. Accordingly, since the release control means can employ a weak driving force, the release control means can be configured to be small and light.

Furthermore, the said convex part is formed in the opening edge part of the said hole, It is characterized by the above-mentioned.
According to this, the mechanism of the cylinder opening device can be configured simply.

Further, the hole is provided in a through-hole penetrating the main body, and the first locking portion includes a wire having one end attached to the driving member, and the other end of the wire attached to one end, A rod-shaped member that protrudes out of the main body from the opposite side of the female threaded portion of the hole, and one end of the rod-shaped member is brought into contact with the opening edge portion of the hole, and the wire by the urging force of the urging member A stopper portion that locks the other end portion against a rotational moment generated at the other end portion of the rod-shaped member by the biasing force in a state of being rotated by 90 ° or more with respect to the biasing direction of The release control means releases the locking of the other end portion of the rod-like member by the stopper portion when the predetermined trigger signal is input.
According to this, against the urging force of the urging member, the one end of the rod-shaped member is locked at the opening edge of the hole, and the rotational moment generated at the other end is locked by the stopper. By the lever principle, the force to be locked by the stopper portion can be set weakly. Accordingly, since the release control means can employ a weak driving force, the release control means can be configured to be small and light.

Further, the release control means has a solenoid for driving the stopper portion.
According to this, a small and lightweight solenoid can be adopted.

In addition, the main body is provided with a guide portion that guides a rotation trajectory of the rod-shaped member due to the rotational moment when the locking of the rod-shaped member by the stopper portion is released.
According to this, the movement of the rod-shaped member when the stopper portion is released can be made smooth.

The biasing member is a coil spring disposed in the hole portion, coaxially with the hole portion, with one end being in contact with the drive member, and the wire passes through the coil spring. It is characterized by being.
According to this, the mechanism of the cylinder opening device can be simply configured, and the space in the main body can be effectively used to reduce the size and weight of the cylinder opening device.

Moreover, the airbag type protector which concerns on this invention is equipped with the following structures in order to solve the said subject. That is, in the airbag type protector for preventing damage to a predetermined part of the body, the cylinder opening device according to any one of claims 1 to 8, the air cylinder attached to the cylinder opening device, and the cylinder opening An air bag that is provided so that fluid flowing out from the air cylinder opened by the apparatus flows in, and that can be attached to the predetermined part or in the vicinity of the predetermined part, and the release control means of the cylinder opening device Trigger output means for outputting the predetermined trigger signal.
According to this, since the driving member is locked in the hole by the second locking portion even after the cylinder is opened, the cylinder opening device is reused by pushing the driving member against the biasing force of the biasing member. be able to.

  Further, the trigger output means includes a fall detection means for predicting that a person falls, and outputs the trigger signal to the release control means when the fall detection means detects a person's fall. Features.

Moreover, the initial setting method of the cylinder opening device according to the present invention has the following configuration in order to solve the above problems. That is, it is an initial setting method of a cylinder opening device for attaching a cylinder to the cylinder opening device according to any one of claims 1 to 8 so that the cylinder can be opened, and is a male screw that can be screwed into the female screw portion. A handle portion that can be rotated by a user to screw the male screw portion into the female screw portion, and the drive member in the hole when the male screw portion is screwed into the female screw portion. An initial setting jig provided with an extending portion that abuts on the screw is used, and the male screw portion of the initial setting jig is screwed into the female screw portion from the state where the driving member is in the predetermined position. By rotating the handle portion, the driving member is pushed by the extending portion and moved from the predetermined position against the urging force of the urging member, and the driving member is moved by the first locking portion. Lock the handle and rotate the handle The initial setting jig is removed from the female screw portion, and the cylinder is attached to the cylinder opening device by screwing the screw portion formed on the outer peripheral surface of the cylinder end with the female screw portion. And
According to this, using the initial setting jig, the extension member pushes the drive member locked to the second locking portion to move it against the biasing force of the biasing member, By locking the movement of the drive member by the locking portion, the cylinder opening device can be initially set (reset) in a state where the cylinder can be opened.

Furthermore, the extension part of the initial setting jig is provided in a cylindrical shape in which the needle can enter the inside so as to avoid the needle and come into contact with the driving member.
According to this, the extending portion can be brought into contact with the driving member while avoiding the needle.

According to the cylinder opening device, the airbag type protector, and the cylinder opening device initial setting method according to the present invention, a new cylinder can be attached and reused even after the cylinder has been opened once.
Moreover, the cylinder opening device and the airbag type protector according to the present invention can be configured to be small and lightweight.

  Hereinafter, the best mode for carrying out an initial setting method for a cylinder opening device, an air bag type protector, and a cylinder opening device according to the present invention will be described.

FIG. 1 is an explanatory view of a tipping protector P as an embodiment of an airbag type protector provided with a cylinder opening device.
The overturn protector P includes a rectangular cloth body 2 that is detachably provided around a person's waist and buttocks. The cloth body 2 has a belt portion 2a made of rubber, which is a stretchable material, at the edge of one long side (FIG. 1 shows a state in which the belt portion 2a is stretched). Moreover, the cloth body 2 has magic portions 2b and 2c that stick to each other at the edges of both short sides.

  FIGS. 2A and 2B show a state in which the overturn protector P is worn around a person's waist and buttocks, FIG. 2A is a front explanatory view thereof, and FIG. 2B is an XX cross-sectional explanatory view thereof. The fall protector P is wound around the person's waist and hips by winding the cloth body 2 so as to cover the person's waist and hips and bonding the magic parts 2b and 2c (see FIG. 1) together. be able to. At this time, due to the stretchability of the belt portion 2a made of rubber, the overturn protector P (cloth body 2) is held around the waist and the hips.

On the cloth body 2, two airbags 4a and 4b are attached. As shown in FIGS. 2 (a) and 2 (b), the airbags 4a and 4b are arranged so that when the person puts on the cloth body 2, the buttocks near the femoral neck B, that is, the side surfaces of the buttocks are located on the side. It is disposed on the cloth body 2.
The airbags 4a and 4b are not particularly limited, but may have a volume of about 200 to 300 ml. In addition, as for the volume of an airbag, it is good to employ | adopt the airbag of a larger volume, so that weight is heavy according to a user's physique.

Further, a control unit U is attached on the cloth body 2. As shown in FIGS. 2A and 2B, the control unit U is disposed on the cloth body 2 so that when the person wears the cloth body 2, the control unit U is positioned at or near the position of the umbilical cord of the abdomen. Has been.
The control unit U includes an overturn detection device A, which will be described later, and airbag deployment means 18, which will be described later, for inflating the airbags 4a, 4b by blowing air into the airbags 4a, 4b.
The fall prediction device A is provided on the cloth body 2 and attached to the human trunk by attaching the cloth body 2 to the person. In other words, the cloth body 2 constitutes (also serves as) an attachment means for attaching the fall detection device A to a human trunk.
Furthermore, on the cloth body 2, tubes 6 a and 6 b for guiding the air blown out from an air cylinder 18 a (described later) of the air bag deployment means 18 into the air bags 4 a and 4 b are provided.

Further, pressure sensitive sensors 8 a and 8 b are provided on the cloth body 2. As shown in FIGS. 2 (a) and 2 (b), the pressure sensitive sensors 8a and 8b are arranged on the cloth body 2 so as to be positioned at the heel when a person wears the cloth body 2. The pressure-sensitive sensors 8a and 8b are sensors that are provided in a thin film shape and detect that a pressing force in a direction perpendicular to the surface is applied to at least a part of the pressure-sensitive sensors 8a and 8b. It is provided for detecting that a pressing force is applied to the collar portion.
The pressure-sensitive sensors 8a and 8b are connected to the fall detection device A of the control unit U, and output a signal to the fall detection device A when a pressing force is applied to the collar portion.
The pressure sensors 8a and 8b are not particularly limited, but a thin film pressure sensor having a thickness of about 0.2 mm may be employed.

Next, the configuration of the control unit U will be described.
FIG. 3 is a block diagram showing the configuration of the control unit U and the fall detection device A included therein.
As shown in FIG. 3, the control unit U includes an overturn detection device A, an air cylinder 18a in which air as a cylinder in which a fluid is sealed is sealed, and an air bag unfolding device 18b as a cylinder opening device. 18.

  The fall prediction device A includes an angular velocity sensor 10 provided so as to detect an angular velocity around a longitudinal axis of a human trunk, and a horizontal axis acceleration provided so as to detect a lateral acceleration of the trunk. A sensor 12, a vertical axis acceleration sensor 14 provided so as to be able to detect the vertical acceleration of the trunk, a CPU, a memory, and the like, and by executing a firmware program recorded in the ROM by the CPU, The control part 16 which implement | achieves the function of is provided.

The “axis in the front-rear direction of the human trunk” is the x-axis in FIG. 4, in other words, the axis in the direction in which the front of the trunk is directed. In addition, the “horizontal axis of the human trunk” is the y axis in FIG. 4, and the “vertical axis of the human trunk” is the z axis in FIG. is there.
That is, assuming the three axes of the x-axis, y-axis, and z-axis corresponding to the longitudinal direction, the horizontal direction, and the vertical direction of the trunk with the origin at the position of the navel of the abdomen of the person to which the control unit U is attached, The sensor 10 is positioned and disposed in the control unit U (the fall detection device A) so that the angular velocity around the x-axis axis can be detected. Similarly, the horizontal axis acceleration sensor 12 is positioned in the control unit U (the fall detection device A) so as to be able to detect the y axis and the vertical axis acceleration sensor 14 is in the z axis. Yes.

  The control part 16 is provided so that the angular velocity detection means 16a, the inclination angle detection means 16b, the gravity direction acceleration detection means 16c, and the fall detection means 16d can be realized by executing the firmware program recorded in the ROM.

  Based on the detection value of the angular velocity sensor 10, the angular velocity detection means 16a detects the angular velocity of the trunk motion around the axis in the front-rear direction (x-axis) of the trunk.

The tilt angle detection unit 16b executes a known Kalman filter process based on the angular velocity of the trunk detected by the angular velocity detection unit 16a and the lateral acceleration of the trunk detected by the horizontal axis acceleration sensor 12. Then, the inclination angle of the trunk is calculated and detected.
FIG. 5 is an equation representing the principle of the Kalman filter, and the trunk inclination angle θ _est is obtained based on this equation. Note that the Kalman filter process executed by the tilt angle detection means 16b implements the calculation based on the mathematical expression shown in FIG. 5 as software as it is, and therefore description of a specific processing algorithm is omitted.

Note that θ ^{ACC in} FIG. 5 is calculated by calculating θ ^ACC = sin ⁻¹ (Ay / g) (g is gravitational acceleration) based on the lateral acceleration Ay detected by the horizontal axis acceleration sensor 12. Value. That is, as shown in FIG. 6, when the trunk is tilted only from the upright state around the axis of the trunk in the front-rear direction (x-axis), the horizontal acceleration sensor 12 has the tilt angle θ ^ACC . The corresponding acceleration Ay = g · sinθ ^ACC is detected. θ ^ACC indicates the inclination angle represented by this formula (in fact, the trunk does not always incline only around the axis of the x-axis, so with this θ ^ACC , the x-axis of the trunk The angle of inclination around the axis is inaccurate).

  The gravitational direction acceleration detecting means 16 c detects the acceleration of the trunk in the gravitational direction based on the detection value of the vertical axis acceleration sensor 14.

The fall detection means 16d has an angular velocity of the trunk detected by the angular velocity detection means 16a and an inclination angle of the trunk detected by the inclination angle detection means 16b, respectively, greater than a predetermined threshold, and further detects acceleration in the gravitational direction. When the acceleration in the direction of gravity of the trunk detected by the means 16c is smaller than a predetermined threshold and the pressure sensitive sensors 8a and 8b have not detected pressing on the buttocks, the airbag deployment means 18 (air cylinder A predetermined trigger signal is output to the opening device 18b).
Preferably, the predetermined threshold value of the angular velocity of the trunk is 50 ° per second, the predetermined threshold value of the inclination angle of the trunk is 15 °, and the predetermined threshold value of the acceleration in the gravity direction of the trunk is 8. It may be set to 82 m / s ² .

The process of the fall detection means 16d will be described with reference to the flowchart of FIG.
The fall detection means 16d is executed when the fall detection device A is turned on and the predetermined initialization process by the control unit 16 is completed, and performs the predetermined process represented by the flowchart of FIG.

First, the fall prediction means 16d acquires the angular velocity ω ^gyro detected by the angular velocity detection means 16a described above (step S1). Similarly, the fall prediction means 16d acquires the inclination angle θ _est detected by the inclination angle detection means 16b (step S2). Furthermore, the fall prediction means 16d acquires the gravity direction acceleration Az detected by the gravity direction acceleration detection means 16c (step S3).
The processing of these steps S1 to S3 is not particularly limited. For example, the processing of the angular velocity detection means 16a, the inclination angle detection means 16b, and the gravitational direction acceleration detection means 16c is made into a subroutine, and the fall detection means 16d ^{Alternatively} , the ^{values of} the angular velocity ω ^gyro , the inclination angle θ _est , and the gravitational direction acceleration Az may be stored in a predetermined area of the memory as needed, and may be configured to be referred to by the fall detection means 16 d. Also good.

Subsequently, the fall detection means 16d has values of the angular velocity ω ^gyro and the inclination angle θ _est larger than predetermined threshold values (50 ° and 15 ° per second, respectively), and the gravity direction acceleration Az has a predetermined threshold value ( It is determined whether it is smaller than 8.82 m / s ² ) (step S4).
If it is determined in step S4 that at least one of these values does not satisfy the condition ("NO" in step S4 in FIG. 7), the fall detection means 16d performs the processing in steps S1 to S4. Repeat again.
If it is determined in step S4 that all the values satisfy the above condition ("YES" in step S4 in FIG. 7), one of the pressure sensors 8a and 8b detects the pressing of the buttocks. It is determined whether or not (step S5).
If it is determined in step S5 that the pressure sensitive sensors 8a and 8b detect pressing, the overturn detection means 16d repeats the processing of steps S1 to S5 (or S1 to S4) again.
If it is determined in step S5 that the pressure sensors 8a and 8b do not sense pressing, the overturn detection means 16d outputs the predetermined trigger signal to the airbag deployment means 18 (air cylinder opening device 18b). (Step S6).
In other words, the overturn detection means 16d repeats the processing of Steps S1 to S4 or Steps S1 to S5 unless the trigger signal output processing to the airbag deployment means 18 (air cylinder opening device 18b) according to Step S6 is performed. In this polling state, ω ^gyro , tilt angle θ _est , and gravity direction acceleration Az are constantly monitored.

  When the air cylinder opening device 18b receives the predetermined trigger signal from the fall detection means 16d, the air cylinder 18a opens the air cylinder 18a to introduce the air in the air cylinder 18a into the airbags 4a and 4b through the tubes 6a and 6b. Then, the airbags 4a and 4b are deployed.

  Next, it will be described on the basis of experimental data that the fall detection device A can accurately detect a fall, and that there is almost no misprediction of a daily motion as a fall.

FIG. 8 is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the trunk in the front-rear direction when the person falls, detected by the fall detection device A (FIG. 8 ( It is a graph (FIG.8 (b)) showing the transition of the angular velocity of the exercise | movement of a trunk | body around the said axis | shaft at that time.
8 (a) and 8 (b), the vertical axis represents the trunk inclination angle and trunk angular velocity around the axis, respectively. For convenience, positive values are clockwise and negative for the subject. The value of represents the inclination angle and each speed in the counterclockwise direction as viewed from the subject. In this graph, for the sake of convenience, the clockwise direction value and the counterclockwise direction value are represented by positive and negative values, respectively. However, each threshold value in the claims and the detailed description of the present invention is an inclination angle, respectively. And the absolute value of the angular velocity.

In the graph of FIG. 8, the person loses balance around 6.93 s on the time axis (horizontal axis), and both the inclination angle and the angular velocity of the trunk around the x-axis around 7.20 s. Are over 15 ° and 50 ° per second, respectively. In this case, the time point when the body touches the ground is around 7.49 s. When the fall detection means 16d detects the fall and activates the airbag deployment means 18 when the threshold is exceeded, the body touches the ground. It takes about 290 ms to complete.
In order to complete the deployment of the airbags 4a and 4b of about 200 to 300 ml according to the present embodiment, it takes about 200 ms from the opening of the air cylinder. It is possible to deploy.

  FIG. 9 is a similar graph showing a case of a fall of another person from FIG. 8, but in this case as well, the fall can be detected at a time around 5.74 s, and there is a time of about 330 ms until the ground contact, It can be seen that the airbags 4a and 4b can be deployed before grounding.

  Now, consider the case where the predetermined threshold values of the tilt angle and the angular velocity are 22 ° and 62 ° per second, respectively, using the same experimental data as in FIG. In this case, as shown in FIGS. 10 (a) and 10 (b), the estimated time of the fall is around 7.34s, there is only a margin of about 150ms until the ground contact, and the deployment of the airbags 4a and 4b may not be in time. I understand.

  As a result of repeated experiments, the inventors of the present invention have found that if the threshold value of the tilt angle is set to 20 ° or less and the threshold value of each speed is set to 60 ° or less per second, it is about It was confirmed that sufficient time for deploying the airbags 4a and 4b of 200 ms or more could be secured.

  Now, as described above, it has been clarified that the threshold value of the tilt angle should be set to 20 ° or less and the threshold value of each speed should be set to 60 ° or less per second. There is a case where it is misunderstood that it is a fall even in the daily movement of. Therefore, below, a suitable lower limit value of each threshold will be considered.

11, 12, and 13 show the inclination angle detection of the transition of the trunk inclination angle and the angular velocity, respectively, when walking, climbing stairs, and sitting on a chair as daily activities. It is the graph detected by the means 16b and the angular velocity detection means 16a.
Although it can be read from these graphs, the present inventors have found that the angular velocity around the axis of the longitudinal axis of the trunk is 10 °, although the angular velocity may fluctuate greatly in daily operations. It has been found that almost never exceeding 15 ° and more than 15 ° is almost none at all. Further, the present inventors have found that if the angular velocity is set to 40 ° or more per second, the threshold value is hardly exceeded at the same time as the inclination angle in daily operations, and it is more preferable to set the angular velocity to about 50 ° per second.

  In the present embodiment, the fall detection means 16d is configured to consider the acceleration in the gravitational direction when detecting the fall, but this is an experiment using a configuration that does not consider the acceleration in the gravity direction. As a result, when the zigzag walking or S-shaped walking is performed such that the test subject steps to step left and right, the fall prediction device A according to the present embodiment erroneously estimates that the test subject has fallen. Because there was. That is, in order to prevent this misprediction, the acceleration of the trunk in the gravitational direction is further smaller than a predetermined threshold value smaller than the gravitational acceleration g (that is, the trunk is falling at a predetermined acceleration in the gravitational direction). This is in addition to the conditions for predicting a fall. Therefore, except for a special case in which such an unnatural motion is mistakenly assumed to be a fall, it is not always necessary to take into account the acceleration in the direction of gravity in order to predict the fall. In particular, when the fall detection device A is applied to a person who is slow and monotonous, such as an elderly person, a configuration that considers acceleration in the direction of gravity is not necessarily employed.

  In addition, in the overturn protector P according to the present embodiment, the pressure sensors 8a and 8b are provided in the heel portion, and the airbags 4a and 4b are not deployed when the pressure sensors 8a and 8b sense pressure. For example, when you perform an action that leans on your back while sitting on a chair, or you lie while lying on a floor, you may mistakenly assume that you are falling. It is something to prevent. This configuration is also effective, but may be selected according to the application conditions.

  In the present embodiment, the angular velocity detection means 16a and the inclination angle detection means 16b are configured to detect the angular velocity and the inclination angle of the trunk using the angular velocity sensor 10 and the horizontal axis acceleration sensor 12, but this The invention is not necessarily limited to this, and other sensors may be employed as long as they can detect and calculate the angular velocity and the inclination angle of the trunk.

Further, in the overturn protector P according to the present embodiment, the airbags 4a and 4b are disposed at the corresponding positions of the femoral neck B, but the present invention is not limited to this, and for example, the overturn protector P You may arrange | position an airbag in the corresponding position of other parts, such as an easy head, an elbow, a shoulder, and a back.
In addition, the cloth body may be configured in a pants or trouser shape, or may be configured in a vest shape when worn on the upper body. In particular, when the overturn protector P is attached to the upper body, it is preferable that the overturn detection device and the control unit are arranged so as to be positioned on the chest where there is little movement such as a bending operation.

  According to this fall prediction device A, it is possible to predict in a short time that a person loses balance and falls, and there are few false predictions. In addition, the fall with a predetermined angular velocity around the axis of the longitudinal axis of the trunk, that is, the fall to the side can be detected particularly reliably, so that the femoral neck fracture is likely to occur. Falling falls can be detected particularly reliably (note that in most cases, the torso exercises with a predetermined angular velocity around its longitudinal axis). , Most falls are detectable). Furthermore, compared with the conventional configuration employing a triaxial angular velocity sensor and a triaxial acceleration sensor, accurate estimation can be performed with a small number of sensors, and the configuration can be reduced in size and weight.

  Further, according to the overturn protector P according to the present embodiment, the person overturns in a short time after a loss of balance and without mistaking it as a daily action (particularly a fall that falls from the side of the buttocks to the ground or the like). Thus, the airbags 4a and 4b can be deployed.

Next, an embodiment of the air cylinder opening device 18b will be described.
FIG. 14 is an external view of the air cylinder opening device 18b, and FIG. 15 is a cross-sectional explanatory view for explaining the configuration of the air cylinder opening device 18b.

As shown in FIG. 15, a female screw portion that can be screwed into a screw portion formed on the outer peripheral surface of the end portion of the air cylinder 18 a for attaching the air cylinder 18 a to the one end 20 c side of the main body 20 of the air cylinder opening device 18 b. 20a is provided.
Further, the main body 20 is formed with a hole portion 20b that extends to the back of the female screw portion 20a and opens through the other end 20d of the main body 20. The hole portion 20b includes a fluid introduction portion 20ba that is substantially the same diameter as the female screw portion 20a, a spring chamber 20bc that houses a coil spring 22 as an urging member, and a small diameter portion between the fluid introduction portion 20ba and the spring chamber 20bc. 20bb and an opening 20bd connecting the spring chamber 20bc and the other end 20d of the main body 20 to each other.

A disk-shaped drive member 24 is provided in the spring chamber 20bc of the hole 20b. One end of the coil spring 22 is in contact with the inner wall portion on the other end 20d side of the main body 20, the other end is in contact with one surface of the drive member 24, and the drive member 24 is attached to the female screw portion 20a. The urging is performed toward the end face 18aa.
The coil spring 22 is disposed in the spring chamber 20bc so as to be coaxial with the hole 20b (spring chamber 20bc).

  The driving member 24 is attached with a needle 26 whose tip is directed to the end surface 18aa of the air cylinder 18a. A groove (not shown) is formed on the side surface of the needle 26 along the longitudinal direction thereof. The groove portion forms a flow path for guiding the air in the air cylinder 18a to the outside of the air cylinder 18a when the needle 26 penetrates the outer wall of the end face 18aa of the air cylinder 18a.

The air cylinder opening device 18b includes a first locking portion that locks the movement of the driving member 24 by the biasing force of the coil spring 22 at a position where the needle 26 is separated from the end surface 18aa of the air cylinder 18a.
As shown in FIGS. 14 and 15, the first locking portion includes a wire 28, a rod-shaped member 30, a convex portion 31, and a stopper portion 33.

As shown in FIG. 15, one end of the wire 28 is attached to the surface opposite to the surface facing the air cylinder 18 a of the drive member 24.
The rod-shaped member 30 is disposed so that the other end of the wire 28 is attached to the one end surface 30a, and the rod-shaped member 30 exits from the main body 20 through the opening 20bd on the opposite side of the hole 20b on the female screw 20a side.
The convex portion 31 is formed on the edge of the opening 20bd on the outer surface of the main body 20. The convex portion 31 abuts against a part of the one end face 30 a of the rod-shaped member 30 that is displaced in the radial direction from the attachment position of the wire 28, and locks the movement of one end of the rod-shaped member 30 by the urging force of the coil spring 22. .
The wire 28 is provided so as to pass through the coil spring 22.

  As shown in FIG. 14, the stopper portion 33 has a claw portion 33a with which the rod-shaped member 30 is fitted, and is pivotally supported by the main body 20 by the shaft portion 33b. The stopper 33 locks the other end 30b of the one end surface 30a of the rod-shaped member 30 when the rotation position is at a predetermined position (hereinafter referred to as a locking position). Specifically, the stopper portion 33 has a rotational moment generated at the other end portion 30b of the rod-shaped member 30 by the biasing force of the coil spring 22 when the part of the one end surface 30a of the rod-shaped member 30 is locked by the convex portion 31. The other end 30b is locked against this. Moreover, the stopper part 33 releases the locking of the other end part 30b by rotating in a predetermined direction from the state where the other end part 30b of the rod-shaped member 30 is locked (the state at the locking position). (The position of the stopper portion 33 that releases this locking is hereinafter referred to as a release position).

  In addition, in the air cylinder opening device 18b which concerns on this Embodiment, the structure which latches the one end surface 30a of the rod-shaped member 30 with the convex part 31 was taken, but this invention is not limited to this. For example, in the configuration shown in FIG. 15, the convex portion 31 is eliminated, and the other end portion is locked by the stopper portion 33 in a state where the one end surface 30a of the rod-shaped member 30 is located at the center portion of the opening portion 20bd. May be. Even in this configuration, one end side of the rod-shaped member 30 can be supported by the edge portion of the opening portion 20bd, and the rotation moment about the edge portion of the opening portion 20bd generated in the other end portion 30b by the biasing force of the coil spring 22 Can be locked by the stopper portion 33. In the configuration without the convex portion 31, the wire 28 is biased by the biasing force of the coil spring 22 so that the rod-shaped member 30 is not drawn into the hole 20 b by the biasing force of the coil spring 22 in the locked state. It is necessary to lock the rod-shaped member 30 in a state where it is rotated by 90 ° or more with respect to the direction. On the other hand, in the configuration with the convex portion 31, the one end surface 30a of the rod-shaped member is locked to the convex portion 31, and the rod-shaped member 30 is not drawn into the hole portion 20b. It can also be less.

Further, when the predetermined trigger signal is input, the air cylinder unsealing device 18b unlocks the other end portion 30b of the rod-shaped member 30 by the stopper portion 33 (that is, unlocks the first locking portion). And release control means.
The release control means includes a solenoid 36 that drives the rod 36a when the predetermined trigger signal is input. The solenoid 36 is attached to the main body 20 via the attachment 42. The rod 36a is linked to the stopper portion 33, and the stopper portion 33 is controlled to rotate so that the rod portion 36a is selectively positioned at the locking position and the release position when the rod 36a is driven.

When the locking of the other end 30b of the rod-shaped member 30 by the stopper 33 is released by the release control means, the driving member 24 is driven toward the air cylinder 18a by the urging force of the coil spring 22, and accordingly, FIG. As shown in FIG. 16, the rod-shaped member 30 rotates around the contact portion with the convex portion 31 of the one end face 30a by the rotational moment (dotted line portion in FIG. 16), and finally comes off from the convex portion 31. Are pulled into the opening 20bd.
As shown in FIG. 14, the main body 20 is provided with a groove portion 20 g as a guide portion for guiding the rotation trajectory of the rod-shaped member 30 so as to stabilize the rotation trajectory of the rod-shaped member 30 at this time. The groove 20g is formed along a plane parallel to the drive direction so that the rotation of the rod-shaped member 30 is in a plane parallel to the drive direction of the drive member 24.

The air cylinder unsealing device 18b drives the drive member 24 toward the end surface 18aa of the air cylinder 18a when the locking of the first locking portion is released, and a predetermined position where the needle 26 penetrates the outer wall of the end surface 18aa. A second locking portion to be locked. The second locking portion is configured by a small diameter portion 20bb (see FIG. 15) in which the inner diameter of the hole portion 20b is smaller than the diameter of the drive member 24.
That is, since the hole 20b of the main body 20 has a small diameter portion 20bb smaller than the diameter of the drive member 24 on the air cylinder 18a side of the drive member 24, the end surface 18aa of the air cylinder 18a of the drive member 24 is formed. The driving toward is stopped by a step 20e between the spring chamber 20bc in which the driving member 24 is disposed and the small diameter portion 20bb (see FIG. 16).

Further, when the driving member 24 is locked by the second locking portion and is in the predetermined position, the driving member 24 seals the small diameter portion 20bb and closes the flow path between the spring chamber 20bc and the fluid introduction portion 20ba ( (See FIG. 16).
In the main body 20, a communication hole 20f that connects the fluid introduction portion 20ba of the hole 20b and the outer surface of the main body 20 on the female screw portion 20a side of the small diameter portion 20bb is formed as a flow path of air flowing out from the air cylinder 18a. ing. The communication hole 20f communicates with the tubes 6a and 6b, and the air blown out from the air cylinder 18a is introduced into the airbags 4a and 4b through the communication hole 20f and the tubes 6a and 6b.

  Next, an embodiment of an initial setting method of an air cylinder opening device that attaches the air cylinder 18a to the air cylinder opening device 18b in a state where it can be opened will be described.

  In the initial setting method of the air cylinder opening device, an initial setting jig 38 is used. FIG. 17 is an external view of the initial setting jig 38. The initial setting jig 38 is provided at one end thereof with a male screw portion 38a that can be screwed into the female screw portion 20a of the main body 20 of the air cylinder unsealing device 18b. Further, the initial setting jig 38 is provided with a handle portion 38b that can be rotated by the user so as to screw the male screw portion 38a into the female screw portion 20a. The handle portion 38b is provided coaxially with the male screw portion 38a and is formed in a cylindrical shape having a larger diameter than the male screw portion 38a. Furthermore, the initial setting jig 38 is provided with an extending portion 38c that comes into contact with the drive member 24 in the hole 20b when the male screw portion 38a is screwed into the female screw portion 20a.

FIG. 18 is an explanatory diagram when initial setting of the air cylinder opening device 18b is performed using the initial setting jig 38. FIG.
From the state in which the driving member 24 is in the predetermined position (see FIG. 16), the user screws the male screw portion 38a of the initial setting jig 38 into the female screw portion 20a of the main body 20 of the air cylinder opening device 18b to handle the handle. By rotating the portion 38b, the drive member 24 is pushed by the extending portion 38c and moved from the predetermined position against the urging force of the coil spring 22 (see FIG. 18). In addition, the extension part 38c is provided in the cylinder shape (for example, cylindrical shape) into which the needle | hook 26 can approach into an inside so that the needle | hook 26 may be avoided and it may contact | abut.

Subsequently, the user performs setting so that the movement of the driving member 24 is locked by the first locking portion.
This will be specifically described below. In the previous step, the drive member 24 is moved away from the female screw portion 20a to which the air cylinder 18a is attached against the urging force of the coil spring 22, so that the rod-shaped member 30 is moved out of the main body 20 from the opening 20bd. Exposure is possible. The user abuts a part of the one end face 30a of the rod-shaped member 30 that is displaced in the radial direction from the attachment position of the wire 28 to the convex portion 31, and further, the other end 30b of the rod-shaped member 30 is moved to the stopper portion 33. Is moved to the locking position by the stopper 33.

  Subsequently, the user rotates the handle portion 38b in the opposite direction to remove the initial setting jig 38 from the female screw portion 20a of the main body 20, and replaces the initial setting jig 38 with the female screw portion 20a to the end of the air cylinder 18a. The air cylinder 18a is attached to the air cylinder unsealing device 18b by screwing the screw part formed on the outer peripheral surface of the part.

  After the initial setting by the initial setting method of the air cylinder opening device is completed, when the predetermined trigger signal is output from the overturn detection device A, the solenoid 36 is driven and the stopper portion 33 is rotated to the release position. The other end 30b of the rod-shaped member 30 is unlocked. As a result, the drive member 24 is driven toward the air cylinder 18a by the biasing force of the coil spring 22, the needle 26 penetrates the outer wall of the end surface 18aa of the air cylinder 18a, and the air cylinder 18a is opened.

  When the air cylinder 18a is opened, the air in the air cylinder 18a flows out of the air cylinder 18a through a groove formed on the side surface of the needle 26, and flows into the tubes 6a and 6b through the fluid introduction part 20ba and the communication hole 20f in the main body 20. The airbags 4a and 4b are deployed by being introduced into the airbags 4a and 4b.

  Thereafter, the user can reset the air cylinder 18a to the air cylinder opening device 18b by the initial setting method of the air cylinder opening device as needed, and can repeatedly use the air cylinder opening device 18b.

According to the air cylinder opening device 18b according to the present embodiment, the drive member 24 is locked in the hole portion 20b by the second locking portion even after the air cylinder 18a is opened. It can be reused by pushing against the urging force.
In particular, according to the initial setting method of the air cylinder opening device using the initial setting jig 38, the initial setting method of the air cylinder opening device 18b can be easily performed.

  Further, according to the air cylinder unsealing device 18b, the one end surface 30a of the rod-shaped member 30 is locked by the convex portion 31 against the urging force of the coil spring 22, and the other end portion 30b of the rod-shaped member 30 by the stopper portion 33. Since the rotational moment generated in the step is locked, the locking force by the stopper portion 33 can be set weakly by the lever principle. Therefore, a solenoid having a weak driving force can be adopted as the solenoid 36 as the release control means, and the solenoid 36 can be configured to be small and light.

It is explanatory drawing of the airbag type protector (protector for a fall) which concerns on this invention. The state which attached the airbag type protector (protector for a fall) concerning this invention to the circumference | surroundings of a person's waist and hips is shown, (a) is the front explanatory drawing, (b) is XX cross-sectional description FIG. It is a block diagram which shows the structure of the control unit U and the fall prediction apparatus A contained in it. It is explanatory drawing of the axis | shaft of the front-back direction of a human trunk (x-axis), the axis | shaft of the left-right direction (y-axis), and the axis | shaft of an up-down direction (z-axis). It is a figure showing the formula which shows the principle of a Kalman filter. It is explanatory drawing of how to obtain ^| require inclination-angle (theta) ^ACC by a horizontal-axis acceleration sensor. It is a flowchart showing the process of a fall prediction means. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a person falls, (b) It is a graph showing the transition of the angular velocity of the trunk motion around the axis. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a person falls, (b) It is a graph showing the transition of the angular velocity of the trunk motion around the axis. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a person falls, (b) It is a graph showing the transition of the angular velocity of the trunk motion around the axis. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a human is walking, (b) FIG. 6 is a graph showing transition of angular velocity of trunk motion around the axis. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a person goes up the stairs, (b) It is a graph showing the transition of the angular velocity of the motion of the trunk around the axis. (A) is a graph showing the transition of the inclination angle with respect to the upright state of the trunk around the axis of the longitudinal axis of the trunk when a person sits on the chair, (b) It is a graph showing the transition of the angular velocity of the trunk motion around the axis at that time. It is an external view of the cylinder opening apparatus (air cylinder opening apparatus) which concerns on this invention. It is a section explanatory view of the cylinder opening device (air cylinder opening device) concerning the present invention. It is a section explanatory view of the cylinder opening device (air cylinder opening device) concerning the present invention. It is an external view of the jig for initial setting. It is explanatory drawing of the initial setting method of the cylinder opening apparatus which concerns on this invention. It is a figure which shows the conventional cylinder opening apparatus.

Explanation of symbols

P Fall protector (airbag type protector)
A Fall detection device U Control unit 2 Cloth body 4a, 4b Airbag 8a, 8b Pressure sensor 10 Angular velocity sensor 12 Horizontal axis acceleration sensor 14 Vertical axis acceleration sensor 16 Control unit 16a Angular velocity detection unit 16b Tilt angle detection unit 16c Gravity direction acceleration Detection means 16d Falling detection means 18 Air bag deployment means 18a Air cylinder (cylinder)
18b Air cylinder opening device (cylinder opening device)
20 Main body of air cylinder unsealing device 20a Female screw part 20b Hole part 20bb Small diameter part (second locking part)
20f communication hole 20g groove part (guide part)
22 Coil spring (biasing member)
24 driving member 26 needle 28 wire (first locking portion)
30 Bar-shaped member (first locking part)
30a One end surface of the rod-shaped member 30b The other end portion of the rod-shaped member 31 Convex portion (first locking portion)
33 Stopper (first locking part)
36 Solenoid (release control means)
38 Initial setting jig 38a Male screw part 38b Handle part 38c Extension part

Claims (13)

A female screw part that can be screwed into a screw part formed on the outer peripheral surface of an end part of the cylinder for attaching a cylinder filled with fluid is provided on one end side, and a hole part that extends to the back of the female screw part A body formed with,
A drive member disposed in the hole and biased toward an end face of a cylinder attached to the female screw portion by a biasing member provided in the main body;
A needle attached to the drive member such that the tip is directed to the end face of the cylinder;
A first locking portion for locking the movement of the drive member by the biasing force of the biasing member at a position where the needle is separated from the end surface of the cylinder;
When a predetermined trigger signal is input, the driving member is driven by the urging force of the urging member by releasing the locking of the first locking portion, and the needle is attached to the outer wall of the end surface of the cylinder. A release control means for penetrating and opening the cylinder;
A second locking portion for locking the drive of the driving member toward the end face of the cylinder due to the release of the locking of the first locking portion at a predetermined position where the needle penetrates the outer wall; A cylinder opening device characterized by that. The second locking portion is constituted by a small-diameter portion in which the inner diameter of the hole is smaller than the diameter of the drive member,
The drive member is provided to seal the small diameter portion when in the predetermined position,
2. The main body is formed with a communication hole connecting the hole and the outer surface on the female screw portion side of the small diameter portion as a flow path for fluid flowing out of a cylinder. The cylinder opening device described.   The flow path opening at least on the side surface is formed in the needle to guide the fluid in the cylinder to the outside of the cylinder when penetrating the outer wall of the cylinder. Cylinder opening device. The hole is provided in a through-hole penetrating the main body,
The first locking portion is
A wire having one end attached to the drive member;
The other end of the wire is attached to one end face, and a rod-like member that goes out of the main body from the opposite side of the female screw part side of the hole,
Movement of the one end of the rod-shaped member by the urging force of the urging member, which is formed on the outer surface of the main body, abuts against a part of the one end surface of the rod-shaped member that is displaced in the radial direction from the attachment position of the wire A convex portion for locking,
The part of one end surface of the rod-shaped member is locked by the convex portion, so that the other end portion is resisted against the rotational moment generated in the other end portion of the rod-shaped member by the biasing force of the biasing member. A stopper portion to be locked,
The release control means includes
The cylinder opening device according to any one of claims 1 to 3, wherein when the predetermined trigger signal is input, the stopper is released from the other end of the rod-shaped member. .   The cylinder opening device according to claim 4, wherein the convex portion is formed at an opening edge portion of the hole portion. The hole is provided in a through-hole penetrating the main body,
The first locking portion is
A wire having one end attached to the drive member;
The other end of the wire is attached to one end, and a rod-like member that goes out of the main body from the opposite side of the female screw part side of the hole,
One end of the rod-shaped member is brought into contact with the opening edge of the hole, and the rod-shaped member is rotated by 90 ° or more with respect to the biasing direction of the wire by the biasing force of the biasing member. A stopper portion for locking the other end portion against a rotational moment generated at the other end portion of
The release control means includes
The cylinder opening device according to any one of claims 1 to 3, wherein when the predetermined trigger signal is input, the stopper is released from the other end of the rod-shaped member. .   The cylinder opening device according to any one of claims 4 to 6, wherein the release control means includes a solenoid that drives the stopper portion.   The main body is provided with a guide portion that guides the rotation trajectory of the rod-shaped member by the rotational moment when the locking of the rod-shaped member by the stopper portion is released. The cylinder opening device according to any one of 7. The urging member is a coil spring disposed in the hole portion, coaxially with the hole portion, with one end being in contact with the drive member,
The cylinder opening device according to any one of claims 4 to 8, wherein the wire is provided so as to pass through the coil spring. In the air bag type protector which prevents the damage of the predetermined part of the body,
The cylinder opening device according to any one of claims 1 to 9,
An air cylinder attached to the cylinder opening device;
An air bag provided so that a fluid flowing out of the air cylinder opened by the cylinder opening device flows in, the air bag being attachable to the predetermined part or in the vicinity of the predetermined part;
An airbag type protector comprising trigger output means for outputting the predetermined trigger signal to the release control means of the cylinder opening device.   The trigger output means includes a fall detection means for predicting that a person falls, and outputs the trigger signal to the release control means when the fall detection means predicts a person's fall. The airbag type protector according to claim 10. An initial setting method for a cylinder opening device for attaching the cylinder to the cylinder opening device according to any one of claims 1 to 9,
A male screw part that can be screwed to the female screw part, a handle part that can be rotated by a user to screw the male screw part to the female screw part, and the male screw part screwed to the female screw part Using an initial setting jig provided with an extending portion that comes into contact with the drive member in the hole when
From the state in which the driving member is in the predetermined position, the handle member is rotated by screwing the male screw portion of the initial setting jig into the female screw portion, whereby the extending portion is To depress the biasing force of the biasing member to move from the predetermined position,
The movement of the drive member is locked by the first locking portion,
Rotate the handle portion to remove the initial setting jig from the female screw portion,
An initial setting method for a cylinder opening device, wherein a cylinder is attached to the cylinder opening device by screwing a screw portion formed on an outer peripheral surface of a cylinder end portion with the female screw portion.   13. The extending portion of the initial setting jig is provided in a cylindrical shape that allows the needle to enter the inside so as to contact the driving member while avoiding the needle. Initial setting method for cylinder opening device.