JPH0492740A - Starting device - Google Patents

Abstract

PURPOSE:To reliably operate a plurality of actuators by detecting movement of an ignition member by means of a photo detecting part when the ignition member is moved in the direction of a detonator through the action of an inertia body to operate the one actuator during rapid deceleration of a vehicle, and operating the other actuator. CONSTITUTION:When a ball 44 effects wide inertia movement in a direction C during rapid deceleration of a vehicle, a drive shaft 46 is rotated in a direction E around a support axle 46C and a lock part 46B is unlocked from a flange part 54B of an ignition pin 54. As a result, the ignition pin 54 is moved through the energizing force of a compression coil spring 58 and collided with a detonator 62 to ignite the detonator, and the one air bag is expanded. Meanwhile, since light projected from a light emitting element 106 is shut off by a shaft part 54A of the ignition pin 54 along with movement of the ignition pin 54, a light receiving element 108 is brought into a state to be not photoelectrically converted. The other air bag device, i.e., an air bag device on the assistant seat side, is also operated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a starting device that operates a plurality of actuators when a vehicle suddenly decelerates.

[Conventional technology]

There are various types of actuators that operate when a vehicle suddenly decelerates, and among them, a case will be described in which an electrically ignited air bag device is installed in both the driver's seat and the passenger's seat.

In this type of airbag device, sensors that detect sudden deceleration of the vehicle are arranged near both front axles of the vehicle. These sensors are connected via wire harnesses to the electrically ignited airbag device body installed in the driver's seat steering wheel, the control device installed near the center console, and the passenger seat airbag device body. is connected to.

When the vehicle suddenly decelerates, one of the sensors disposed near both front axles detects this sudden deceleration, and the airbag device bodies for the driver's seat and the passenger's seat are activated, respectively, via a wire harness. As a result, the occupants seated in the driver's seat and the front passenger seat are protected by the respective inflatable bags.

[Problem to be solved by the invention]

However, in this type of airbag device, high reliability is required for the wire harness that connects the sensors near both front axles of the vehicle and each airbag device body. Since the electrical signal from the lever sensor must be reliably sent to the airbag device body through the wiring group in the wiring harness, it is necessary to use a wiring harness that strongly protects the wiring group, and the entire airbag device This led to an increase in costs.

In addition, this type of airbag device requires sensors near both front axles in addition to the wire harness mentioned above, which increases the number of parts and complicates the structure, which also increases the cost of the entire airbag device. It was connected.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to obtain an activation device that can be simplified in structure and that can reliably operate a plurality of actuators when a vehicle suddenly decelerates.

[Means to solve the problem]

The present invention is a starting device that operates a plurality of actuators that are activated when a vehicle suddenly decelerates, with a single starting device main body, wherein the starting device main body includes an inertial body that moves by inertia when a vehicle suddenly decelerates, and the inertial body that moves inertia when a vehicle suddenly decelerates. An ignition member that moves in the direction of the detonator by a biasing force and collides with the detonator to activate one of the actuators, and a moving member that moves in cooperation with the movement of at least one of the inertial body and the ignition member. a photodetector that optically detects the movement of at least one of the inertial body, the ignition member, and the moving member and outputs an electrical signal; , when at least one of the ignition member and the movable member is in a non-moving state, the other actuator is rendered inactive, and when at least one of the inertial body, the ignition member and the movable member is in a movable state, the other actuator is turned off. The invention is characterized in that it has a control means for activating it.

[Effect]

According to the above configuration, when the vehicle is normally running, the acceleration applied to the inertial body is small, so the inertial body does not move or the amount of inertial movement is small. Therefore, the ignition member does not move toward the detonator due to the biasing force, and therefore, one of the actuators does not operate.

Furthermore, in this state, the moving member that cooperates with the movement of at least one of the ignition member and the inertial body does not move. Therefore, in normal vehicle running conditions, none of the inertial body, the ignition member, and the moving member are moving, so the other actuator is rendered inactive by the control means.

When the vehicle suddenly decelerates from this state, the acceleration applied to the inertial body increases, and the ignition member moves toward the detonator due to the force and collides with the detonator. Therefore, the detonator fires and one actuator is actuated.

Further, the moving member cooperates with the movement of at least one of the inertial body and the ignition member, and the movement of any one of the inertial body, the ignition member, and the moving member is optically detected by the light detection unit. and outputs an electrical signal to the control means. Based on this electrical signal, the other actuator is actuated by the control means.

〔Effect of the invention〕

As described above, the activation device according to the present invention has the excellent effect of simplifying the structure and reliably operating a plurality of actuators when the vehicle suddenly decelerates.

〔Example〕

FIG. 2 shows an airbag device A on the driver's seat side according to this embodiment.
A schematic cross-sectional view of the airbag device B on the passenger seat side is also shown.

In the airbag device A on the driver's seat side, a hub 14 of a steering wheel 12 is fixed to the tip of a steering shaft 10, and a substantially box-shaped base plate 16 extends parallel to the hub 14 to support the substantially box-shaped support. It is supported via a bracket 18. A pad 20, a bag body 22, and an inflation flake 24 are attached to the base plate 16.

The pad 20 is arranged on the passenger side of the base plate 16 (the side opposite to the direction of arrow C in FIG. 1). A frame-shaped core metal (not shown) is embedded around the pad 20, and the base plate 16 is connected to the base plate 16 with rivets or the like via this core metal.
is fixed to the periphery of the Further, a thin wall portion 26 is formed at a portion of the pad 20 facing the base plate 16, and the pad 20 is easily broken at this thin wall portion 26.

The bag body 22 is arranged in a folded state on the passenger side of the base plate 16 and is connected to the base plate 16 and the pad 20.
is stored between. The opening side edge of the bag body 22 is attached to the approximate center of the base plate 16 via a ring plate 28. The ring plate 28 is fastened to the base plate 16 with bolts (not shown), and the bag body 2
The opening side edge of 2 is pressed against the base plate 16.

The inflator 24 has a cylindrical shape and is attached to the base plate 1.
6, and is disposed so as to be penetrated by an oval hole. Inflake 24 (= is a flange 3 extending in the radial direction of inflake 24 at its axially intermediate portion)
0 is formed.

The flange 30 is attached to the base plate 16 with bolts (not shown).
It is fixed on the side opposite to the passenger. Also, Inflake 24
A plurality of gas holes (not shown) are formed at predetermined intervals on the circumferential surface of the vehicle on the passenger side. Also, this inflation 24
A starter main body 32, which will be described later, is built into the shaft core of the starter main body 32, and an explosive charge (not shown) is disposed on the outer periphery of the starter main body 32, and a gas generating substance 34 is sealed.

The starting device main body 32 will be described in detail below with reference to FIGS. 1 and 3.

As shown in FIG. 1, the starting device main body 32 includes a substantially cylindrical upper case 36 and a lower case 38, and when the upper case 36 and the lower case 38 are fitted together, the inside of the cover 40 is The ends are fixed by caulking.

Inside the upper case 36, there is a cylinder 4 along the axial direction.
2 is disposed, and a ball 44 as an inertial body is accommodated in this cylinder 42. This ball 44 moves by inertia in the direction of arrow C in FIG. 1 when the vehicle suddenly decelerates. Note that two of each component in the starting device main body 32, including the ball 44, which will be described later, are arranged in symmetrical positions with respect to the axis of the starting device main body 32, but only one component will be explained below. do.

One end in the axial direction of a shaft 46A of the drive shaft 46, which is disposed within the contact surface between the upper case 36 and the lower case 38, is in contact with the end of the ball 44 on the side opposite to the passenger. This drive shaft 46 has a shirt) 4
A locking portion 46B is formed near the axially intermediate portion of the shirt 6A and perpendicular to the shirt 46A, and a pair of support shafts 46C protrude and are pivotally supported by the locking portion 46B.

A bias pin 50 that is biased by a bias spring 48 is disposed inside the upper case 36, and the tip of the bias pin 50 is in contact with the other end of the shaft 46A of the drive shaft 46. .

A coil spring 52 is disposed inside the lower case 38 on the opposite side of the ball 44 with respect to the shaft 46A of the drive shaft 46. The coil spring 52 includes a coil portion and a hook portion that projects in the radial direction from the passenger side end of the coil portion. Although the hook part is not shown in FIG. 1, its coil part side is engaged with a release pin (not shown) inserted into the axis of the starter main body 32, and its tip end is engaged with the other ball (the first In the figure, the ball 44 is located at the opposite end of the ball 44 with respect to the axis of the starting device main body 32. Before the airbag device A is assembled to the steering wheel 12, the coil spring 52 causes the other ball to move in the inertial movement direction and the drive shaft 46 to move.
However, in the assembled state, the release pin is pressed by the protruding portion 18A of the support bracket 18 and moves toward the passenger against the biasing force of the coil spring 52, so that the hook portion is released. The device main body 32 configured from the above position is brought into an operable state.

Furthermore, an ignition pin 54 (also shown in FIG. 3) serving as an ignition member is disposed within the starter main body 32.

The ignition pin 54 has a shaft portion 54A, and a flange portion 54B is formed in the axially intermediate portion thereof. The portion of the shaft portion 54A on the opposite side to the passenger is loosely fitted into a compression coil spring 58 inserted into a spring support portion 56 formed in the lower case 38, and the portion on the passenger side is axially inserted into the upper case 36. It is inserted into a communication path 100 formed along. A disc-shaped locking plate 54 is provided on the passenger side surface of the flange portion 54B.
C is integrally formed, and the locking portion 46B of the drive shaft 46 is locked to a stepped portion formed by the passenger side locking plate 54C and the collar portion 54B. In addition, the brim 5
The compression coil spring 58 is abutted and locked on the surface of 4B on the side opposite to the passenger. Therefore, the compression coil spring 58 presses and urges the ignition pin 54 in the direction of the arrow in FIG.

A detonator 62 is disposed on the locus of movement of the ignition pin 54.

Now, as shown in FIG. 1, a pair of cylindrical light emitting path 102 and light receiving path 104 are formed in the starter body 32 so as to be orthogonal to the communication path 100. The light emitting path 102 and the light receiving path 104 are both located on the same axis and communicate with the communication path 100, respectively. Luminous path 102
A light emitting element 106 is housed within the light receiving path 104, and a light receiving element 108 is housed within the light receiving path 104. Further, as shown in FIG. 3, the light emitting surface of the light emitting element 106 and the light receiving element 108
The light-receiving surfaces of the two faces each other. The light emitting element 106 is configured to always emit light toward the light receiving element 108 when an ignition switch (not shown) is turned on, and the light receiving element 108 photoelectrically converts the received light. The light emitted from the light emitting element 106 to the light receiving element 108 is
When the ignition pin 54 moves, it interferes with the shaft portion 54A of the ignition pin 54 and is interrupted. A facing photo ink converter 110 made up of the light emitting element 106 and the light receiving element 108 is a photodetector.

As shown in FIG. 3(A), under normal vehicle running conditions, the light emitted from the light emitting element 106 toward the light receiving element 108 is not blocked. In this state, the light receiving element 108
is constantly undergoing photoelectric conversion.

However, as shown in FIG. 3(B), when the vehicle is rapidly decelerating, the light is blocked by the shaft portion 54A of the ignition pin 54. In this cut-off state, the light receiving element 108 is not performing photoelectric conversion.

As shown in FIG. 2, the light emitting element 106 described above has two
Book wires 112 and 114 are connected. Similarly, two wires 116 and 118 are connected to the light receiving element 108. As shown in FIG. 1, the two wires 116 and 118 of the light receiving element 108 bypass the bias spring 48 so as not to interfere with the bias spring 48.

As shown in FIG. 2, the light emitting element 106 and the light receiving element 1
Wires 112, 114, 116, and 118 of No. 08 are used as a wire harness 120, and are bent and hung on the side opposite to the passenger of the knob 14. A connector 122 is provided at the end of the wire/'%-ness 120. This connector 12
2 is the connector 1 of the roll connector 124 which will be explained next.
30.

The roll connector 124 has a hollow cylindrical shape, and a hollow cylindrical boss 126 is coaxially formed at the core of the roll connector 124 . The outer peripheral surface of the roll connector 124 is fixed to the vehicle body 70, and the steering shaft 10 is rotatably inserted into the boss 126. Roll connector 12
A ring-shaped groove 128 is formed in the end surface of the vehicle 4 on the passenger side.

The above-described connector 130 is disposed within the groove 128 and connected to the connector 122. This roll connector 1
A wire harness 132 connected to a connector 130 is accommodated within the wire harness 24 .

The wire harness 132 is wound around the boss 126 several times with ample space, and the connector 13 is attached to the end of the wire harness 132.
4 are provided. This roll connector 124 connects four wires 112, 114, 116, 118 from the light emitting element 106 and the light receiving element 108 to the control device 76.
connection status is maintained reliably. That is, the wire harness 13 changes depending on the amount of rotation of the steering wheel 12.
2 changes the winding diameter, so even when the steering wheel 12 rotates to the maximum, the winding diameter of the wire harness 132 is only reduced or expanded and is not disconnected.

The connector 134 is further connected to a connector 136;
From the connector 136, the four wires 112, 114.
11G and 118 are branched.

The wiring 112 of the light emitting element 106 is directly connected to the negative terminal of the vehicle power source 82. The positive terminal of the vehicle power supply 82 is
It is connected to a control device 76 for igniting an electric detonator 78 disposed in an electric ignition type airbag device B on the passenger seat side. Further, the wiring 114 of the light emitting element 106 and the wiring 116 and 118 of the light receiving element 108 are connected to the control device 76.

The control device 76 is connected to a seat switch 86 on the passenger seat side via a wiring 88. This seat switch 86 is connected to a sensor (not shown), and this sensor detects whether or not an occupant is seated in the front passenger seat. When the sensor detects that an occupant is seated in the front passenger seat, the seat switch 85 is turned on.

Airbag device B on the passenger seat side has seat switch 86 set to O.
N, and the light from the light emitting element 106 reaches the ignition pin 54.
Electric current is allowed to flow through the filament only when the electric signal from the light receiving element 108 is no longer transmitted to the control device 76 due to being cut off by the shaft portion 54A of the filament, and when current flows through the filament, Joule heat is generated. The electric detonator 78 ignites, the gas generating agent 90 reacts, and the bag 92
It is configured to expand.

Next, the operation of this embodiment will be explained.

Under normal vehicle running conditions, the ball 44 does not move or the amount of inertial movement is small, so the locking portion 46B of the drive shaft 46 is disengaged from the collar portion 54B of the ignition pin 54 due to the biasing force of the bias spring 48. Never. As a result, the airbag device A on the driver's seat side does not operate.

Further, in this state, the ignition pin 54 is in the state shown in FIG. 3(A), and the light emitted from the light emitting element 106 is constantly received by the light receiving element 108 and continues to be photoelectrically converted. Therefore, the electrical signal output from the light receiving element 108 is always input to the control device 76. As a result, the airbag device B on the passenger seat side does not operate. In this way, normal vehicle running conditions are maintained.

When the vehicle suddenly decelerates from this state, the ball 44 moves to the first position.
Large inertial movement in the direction of arrow C in the figure.

As a result, the drive shaft 46 rotates about the support shaft 46C in the direction of the arrow E in FIG.

As a result, the ignition pin 54 moves in the direction of the arrow in FIG. 1 due to the urging force of the compression coil spring 58 and collides with the detonator 62. As a result, the detonator 62 ignites and the gas generating substance 34 reacts via a booster (not shown), generating a large amount of gas. Therefore, the bag body 22 expands and breaks the pad 20 at the thin portion 2G. The inflated bag 22 after being broken is interposed between the steering wheel 12 and the passenger. As a result, the occupant on the driver's seat side is reliably protected from impact when the vehicle suddenly decelerates.

On the other hand, as the ignition pin 54 moves, the light emitted from the light emitting element 106 is blocked by the shaft portion 54A of the ignition pin 54, as shown in FIG. 3(B). In this case, the light receiving element 108 no longer performs photoelectric conversion. Therefore, the electrical signal output from the light receiving element 108 is no longer input to the control device 76 as well.

Note that in this cut-off state, the ignition pin 54 is first connected to the light emitting element 1.
From the time when the light emitted from 06 is blocked, the ignition pin 54
The detonator 62 is reliably maintained until after the detonator collides with the detonator 62.

Here, if no passenger is seated in the passenger seat, that is, if the seat switch 86 on the passenger seat side is not turned on, the judgment circuit of the control device 76 operates, and the light emitted from the light emitting element 106 is activated. Regardless of whether it is shut off or not, this airbag device B will not operate. However, if a passenger is seated in the passenger seat, that is, if the seat switch 86 is turned on, the judgment circuit of the control device 76 determines that a passenger is seated in the passenger seat. Since the emitted light is blocked and no electrical signal is input from the light receiving element 108 to the control device 76, current flows through the filament, generating Joule heat, the electric detonator 78 ignites, and the gas generating agent 90 generates a large amount of gas. occurs. As a result, the airbag device B on the passenger seat side is activated and the bag 92 is inflated, thereby protecting the passenger seated in the passenger seat.

As described above, in this embodiment, a mechanically ignited airbag device A is provided on the driver's seat side, an electrically ignited airbag device B is provided on the passenger's seat side, and an ignition device is provided in the starting device main body 32. Since the photo ink converter 110 whose optical path is blocked by the movement of the pin 54 is provided, a single activation device main body 32 connects the airbag device B on the driver's seat side and the airbag device B on the passenger seat side of the vehicle. They can be activated simultaneously during sudden deceleration.

Additionally, compared to the conventional case where electrically ignited airbag devices are installed on both the driver's and passenger's seats, there is no need for sensors or wire harnesses installed near both front axles of the vehicle. Therefore, the number of parts can be reduced and costs can be significantly reduced. Furthermore, since there is no need to secure space in the vehicle body for arranging sensors, wire harnesses, etc., there is an advantage in terms of design.

Furthermore, in this embodiment, the control device 76 prevents the airbag device B on the passenger seat side from operating when no occupant is seated in the passenger seat. can be prevented from operating unnecessarily, and can contribute to improving safety.

Furthermore, in this embodiment, since the movement of the ignition pin 54 is optically detected by the photo ink club 110,
The movement of the ignition pin 54 when the vehicle suddenly decelerates is controlled by the ignition pin 5.
The ignition pin 54 can be detected without contact with the ignition pin 54.
The airbag device B on the passenger seat side can be operated reliably without losing the kinetic energy until it collides with the detonator 62.

In addition, this state of blocking the optical path continues from the time when the shaft portion 54A of the ignition pin 54 blocks the optical path until the time when the ignition pin 54 collides with the detonator 62, and even after the ignition pin 54 collides with the detonator 62. Therefore, it is possible to completely eliminate a situation in which the airbag device B on the passenger seat side is not activated even though the vehicle is suddenly decelerating.

Note that in this embodiment, the movement of the ignition pin 54 is optically detected by the photoinkrater 110, but the invention is not limited to this, and as shown in FIG. Alternatively, as shown in FIG. 5, the rotation of the drive shaft 46 may be detected by a photo ink club 110.

That is, according to the structure shown in FIG.
A light-emitting element 106 and a light-receiving element 10 are located at positions facing each other with the ball 44 as the center on the inertial movement direction side (anti-occupant side).
8 are arranged respectively. According to this structure, in the normal vehicle running state shown in FIG. 4(A), the light emitted from the light emitting element 106 is always received by the light receiving element 108; In the illustrated rapid vehicle deceleration state, the ball 44 moves inertia, so the light emitted from the light emitting element 106 is blocked by the ball 44.

Since the electric signal photoelectrically converted by the light-receiving element 108 is not manually input to the control device 76, the airbag device B on the passenger seat side is activated.

The above configuration also provides the same effect as the structure that detects the movement of the ignition pin 54, and since the pole 44 itself, which is the first to move when the vehicle suddenly decelerates, is detected by the photointerrupter 110, the airbag on the passenger side The time required to operate device B can be reduced.

Next, according to the structure shown in FIG. 5, a light emitting element 106 and a light receiving element 108 are placed near one end of the shirt l-46A of the drive shaft 46 at positions symmetrical to each other with the vicinity of this end as the center. are arranged respectively. According to this structure, in the normal vehicle running state shown in FIG. 5(A), the light emitted from the light emitting element 106 is always blocked by the shaft 46A, but as shown in FIG. 5(B), When the vehicle suddenly decelerates, the inertial movement of the ball 44 causes the drive shaft 46 to rotate about the support shaft 46C in the direction of arrow E in FIG. Ru. Therefore, since the electrical signal photoelectrically converted by the light receiving element 108 is input to the control device 76, the airbag device B on the passenger seat side
is activated.

This structure also provides the same effect as when detecting the movement of the ignition pin 54. Note that the drive shaft 46 in this case constitutes a moving member.

In addition to the structure in which the drive shaft 46 is used as a moving member and the rotation of the drive shaft 46 is detected, for example, the movement of the bias pin 5o may be detected by the photointerrupter 110.

Furthermore, a structure in which a moving member is newly added may be used. For example, a light shielding plate may be provided that moves following the movement of any one of the ball 44, drive shaft 46, bias pin 50, and ignition pin 54, so that the light emitted from the light emitting element 106 is Although the light is not blocked by the light shielding plate, when the vehicle suddenly decelerates, the light may be blocked by a light shielding plate that moves following the movement of any of the above members. Further, as another example of a structure in which a moving member is newly added, a light shielding plate that moves in stages and blocks the projected light as the ball 44 and the ignition pin 54 move in sequence is arranged. may be set.

Further, a circular hole or a long hole is formed in a part of the ball 44, the ignition pin 54, etc., and the light emitted from the light emitting element 106 is made to pass through the circular hole or long hole.
It may be configured such that the projected light is blocked by moving these balls 44, ignition pins 54, etc. In this case, by appropriately changing the positions where the circular holes and elongated holes are formed, the position where the photo ink printer 110 is disposed can be freely changed.

In addition, in this embodiment, the facing type photo ink printer 110
However, the present invention is not limited to this, and a reflective photosensor may also be applied.

Furthermore, a portion of the surface of the shaft portion 54A of the ignition pin 54 may be colored black, for example, and the movement of the ignition pin 54 may be detected based on the strength of the reflected light from the ignition pin 54.

Furthermore, although the movement of a single type of member is optically detected in this embodiment, the movement of a plurality of types of members (for example, the ball 44 and the ignition pin 54) is detected by the photo ink club 110. It is also possible to use a configuration in which the airbag device B on the passenger seat side is operated more reliably when the vehicle suddenly decelerates.

In this embodiment, the airbag device A on the driver's seat side is used as one actuator, and the airbag device B on the passenger seat side is used as the other actuator. However, the present invention is not limited to this. The take-up shaft drive member of the buri loader, which is installed in the webbing take-up device on the seat side and forcibly winds the webbing onto the take-up shaft when the vehicle suddenly decelerates, is installed as the other actuator in the webbing take-up device on the passenger seat side. The present invention can be applied to any device in which a plurality of actuators are actuated by a single actuator, such as applying a take-up shaft drive member of a burry loader having a similar structure.

Further, in this embodiment, the control device 76 includes the light emitting element 106,
It is only connected to the light receiving element 108, the airbag device B on the passenger seat side, and the seat switch 86, but there is also a failure memory etc. that stores information when the electrical ignition type airbag device B breaks down for some reason. It may be configured to connect to.

[Brief explanation of drawings]

Figure 2 is a cross-sectional view showing the main body of the activation device in which the photo ink actuator according to the present embodiment is disposed, and Figure 2 is the driver side and passenger side airbags to which the activation device according to the present invention is applied. A schematic configuration diagram of the device, FIG. 3 is an explanatory diagram explaining the operation of the ignition pin and photo ink club in FIG. 1, FIG. 4 is an explanatory diagram showing a modified example for detecting movement of a ball, and FIG. 5 FIG. 6 is an explanatory diagram showing a modification example of detecting rotation of a drive shaft. A... Airbag device (one actuator), B
...Airbag device (other actuator), 32
...Starting device main body, 44...Ball (inertia body), 46...Drive shaft (moving member), 50...
・Bias pin moving member), 54... Ignition pin (ignition member), 58... Compression coil spring, 62... Detonator, 76... Control device (control means, starting device main body), 1,
10... Photo ink labitor (light detection section) C32.
・ 44 ・ ・ 46 ・ ・ 50 ・ ・ 54 ・ ・ 58 ・ ・ 62 ・ ・ 110 ・ ・Starting device body・Ball (inertial body) ・Drive shaft (moving member) ・Bias bottle (moving member) ・Ignition pin (ignition Components) Compression coil spring, detonator, Lie 1 interrupter (light detection section) Fig. (A) Fig. (A)

Claims (1)

[Claims] (1) A starting device that operates a plurality of actuators that operate when a vehicle suddenly decelerates, with a single starting device main body, wherein the starting device main body includes an inertial body that moves by inertia when a vehicle suddenly decelerates; an ignition member that moves in the direction of the detonator due to a biasing force and collides with the detonator to activate one of the actuators; and a moving member that moves in cooperation with the movement of at least one of the inertial body and the ignition member. , a photodetection unit that optically detects the movement of at least one of the inertial body, the ignition member, and the moving member and outputs an electrical signal; and the inertial body based on the electrical signal from the photodetection unit; When at least one of the ignition member and the movable member is in a non-moving state, the other actuator is rendered inactive, and when at least one of the inertial body, the ignition member and the movable member is in a moving state, the other actuator is activated. A starting device characterized in that it has a control means for causing.