JPH08318815A - Safety structure for mechanical ignition type sensor forced operation device - Google Patents

Abstract

PURPOSE: To provide a safety structure for a mechanical ignition type forced operation device, which can be forcibly operated simply as it is left as mounted to a vehicle when the vehicle is scraped and the like, is safe, and not only enhances its operating performance but also prevents it from being forcibly ignited because of careless operations. CONSTITUTION: In a mechanical ignition type sensor 10, a movement limiting section 55 is provided for a cover 18, and can be engaged with a step section 47A of a safety lever 45. The safety lever 45 is restrained by the movement limiting section 55 from being moved to the direction of forced ignition, and careless forced ignition is thereby prevented in a safety device operating condition and a safety device released condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety structure of a mechanical ignition type forced activation device used for an occupant protection device such as an airbag device and a pretensioner device.

[0002]

2. Description of the Related Art Conventionally, as one of occupant protection devices mounted on a vehicle, there is an airbag device for inflating a bag toward the occupant when the vehicle is suddenly decelerated.

There are various types of air bag devices. For example, in a mechanical ignition type air bag device, an inflator having a gas generating agent therein, a base plate to which the inflator is attached, and a folded state are attached to the base plate. It is configured by a bag body, a pad which is housed between the bag body and the base plate, and which is broken and deployed when the vehicle is suddenly decelerated. Further, in the mechanical ignition type airbag device, the sensor itself is arranged at the axial center of the inflator. This mechanical ignition sensor is basically an ignition pin that ignites a detonator, an inertial mass body that inertially moves due to a large acceleration, and a trigger that intervenes between the ignition pin and the inertial mass body to prevent movement of the ignition pin. When the vehicle is suddenly decelerated, the inertial mass moves inertially to release the holding of the ignition pin by the trigger lever, and the ignition pin pierces the detonator with urging force, which causes the gas generant to burn. This is the configuration.

Further, such a mechanical ignition type sensor is provided with a safety device for preventing malfunction during assembly and the like. This safety device includes a safety lever that engages with the inertial mass body that is moved by an inertial force and prevents the movement thereof regardless of the action of the inertial force. When the safety lever is engaged with the inertial mass body, the movement of the inertial mass body is forcibly blocked as described above (sensor operation blocking state), so that it is not necessary when the vehicle is assembled to the vehicle. Even if an external force acts, the sensor is prevented from malfunctioning. On the other hand, after the mechanical ignition type sensor is installed in the vehicle, the inertial mass can be moved (sensor operable state) by moving the safety lever to separate it from the inertial mass. it can.

By the way, when a vehicle provided with the above-described airbag device is scrapped, it is desirable to forcibly activate the airbag device before the vehicle body is crushed from the viewpoint of safety. In addition, from the viewpoint of safety and the reduction of work effort, it is rational to perform this work with the airbag device attached to the steering wheel.

Therefore, in the mechanical ignition type sensor, the safety lever is further operated separately from the above-mentioned state in which the safety lever is engaged with the inertial mass body to prevent movement and is separated from the inertial mass body. A forced actuation device for forcibly igniting the sensor is provided by forcibly moving the inertial mass body (forcibly moving the inertial mass body in the direction in which the inertial mass body moves when the vehicle suddenly decelerates).

With this mechanical ignition type forced activation device, when a vehicle equipped with the above-mentioned airbag device is scrapped, an operator operates the safety lever from the outside to force the sensor to be ignited easily. The airbag device can be forcibly activated, which is extremely effective in terms of safety and workability.

On the other hand, in such a mechanical ignition type sensor forced-actuating device, although the sensor can be easily forcibly ignited by operating the safety lever from the outside, the airbag device is truly forcibly actuated. The safety lever must not be moved to the sensor forcible ignition position except for the case of doing so, and thus the operator was required to perform careful work.

[0009]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention not only allows the mechanical ignition sensor to be forcibly actuated easily while it is still mounted on the vehicle, such as when the vehicle is scrapped, but it is not prepared. It is an object of the present invention to obtain a safety structure of a mechanical ignition type sensor forced activation device capable of preventing forced ignition due to operation of various safety levers.

[0010]

A safety structure of a mechanical ignition type sensor forced actuation device according to a first aspect of the present invention is applied to a mechanical ignition type sensor which ignites by inertial force when a predetermined load acts, and is operated from the outside. A safety structure of a mechanical ignition type sensor forced actuation device for providing a safety lever that moves according to the safety lever, wherein the mechanical ignition type sensor operates in a blocking state, an operable state, and forcibly ignites in accordance with the movement of the safety lever. When the ignition sensor is in the operation blocking state and the operable state, the movement of the safety lever in the forced ignition direction is restricted by engaging with the safety lever, and the safety lever is broken only at the time of the forced ignition to prevent the safety lever from being forced to ignite. It is characterized in that a movement restricting portion that enables movement is provided in a main body portion of the mechanical ignition type sensor.

[0011]

In the safety structure of the mechanical ignition type sensor forced activation device according to the first aspect of the present invention, the safety lever is moved by being operated from the outside so that the mechanical ignition type sensor is in the operation blocking state, the operable state, and the forced ignition state. To be done.

Here, when the mechanical ignition sensor is in the operation blocking state or in the operable state by the safety lever, the movement restricting portion provided in the main body portion of the mechanical ignition sensor engages with the safety lever to force the safety lever to operate. Movement in the ignition direction is restricted. Therefore, even if the safety lever is inadvertently operated in this state, the safety lever does not move in the forced ignition direction. Therefore, the mechanical ignition sensor is prevented from being inadvertently ignited.

On the other hand, when the mechanical ignition sensor is forcibly actuated at the time of disposal of the vehicle, the safety lever is moved from the outside to the forced ignition direction by operating the safety lever from the outside, and the safety lever moves. Is forcibly pressed to break the movement restricting portion, and the movement restriction portion releases the movement prevention of the safety lever. Therefore, the mechanical ignition sensor is compulsorily ignited in the same manner as when a predetermined load is applied.

As described above, the mechanical ignition sensor is forcibly ignited by the safety lever without applying a predetermined inertial force to the mechanical ignition sensor. Therefore, for example, an airbag using the mechanical ignition sensor when the vehicle is disposed of. The safety and workability are improved since it is not necessary to remove the device from the steering wheel and dispose of it after operating the safety device.
Further, the movement of the safety lever to the sensor forced ignition position is limited except when the safety lever is forcibly operated, so that forced ignition due to careless operation of the safety lever can be prevented.

[0015]

1 is a sectional view showing the overall construction of a mechanical ignition sensor 10 according to a first embodiment of the present invention.

The mechanical ignition type sensor 10 is provided with a case 12 which constitutes a sensor main body portion. The case 12 is formed in a cylindrical shape having a bottom wall 14 at one end, and a plate 16 which similarly constitutes a sensor main body portion is fixed and sealed by a cover 18 on the opening side. Case 1
The bottom wall 14 of No. 2 has a through hole 20 formed on the axis.
Further, the case 12 is formed with a cylindrical guide hole 22.

An ignition pin 24 is arranged inside the case 12. The ignition pin 24 is composed of a main body 26 formed in a substantially cylindrical shape and a convex portion 28 formed integrally with the bottom wall 26A of the main body 26 so as to slide in the case 12 along the axis. By moving, the convex portion 28 can enter the through hole 20 formed in the bottom wall 14. The convex portion 28 protrudes from the through hole 20 to the outside when the ignition pin 24 (main body 26) is moved to the side of the bottom wall 14 of the case 12 most.

A firing spring 30 is arranged between the plate 16 fixed to the opening side of the case 12 and the ignition pin 24, and the ignition pin 24 is always provided in the through hole 20.
Is biased in the direction of.

An inertial mass body 32 is arranged in the guide hole 22 of the case 12. The inertial mass body 32 is formed in a substantially cylindrical shape, and is housed in the guide hole 22 so as to be movable along the axial direction. A bias spring 34 is arranged between the inertial mass body 32 and the plate 16 and always biases the inertial mass body 32 toward the bottom wall 14.

A trigger lever 36 is arranged between the inertial mass body 32 and the ignition pin 24. One end of the trigger lever 36 in the longitudinal direction is rotatably supported by a shaft 38. Further, the tip end of the trigger lever 36 is bent toward the ignition pin 24 to form an engagement portion 40,
The ignition pin 24 can be engaged. That is, when the trigger lever 36 rotates about the shaft 38, the engaging portion 40
Can approach or separate the ignition pin 24. In a state where the engaging portion 40 of the trigger lever 36 is engaged with the main body 26 of the ignition pin 24, the ignition pin 24 urged by the firing spring 30 is located at a position where the convex portion 28 is pulled out from the through hole 20. keeping.

A slide holding portion 42 is formed so as to project toward the inertial mass body 32 on the side opposite to the ignition pin 24 near the tip of the trigger lever 36. The slide holding portion 42 corresponds to the release hole 44 formed in the inertial mass body 32, and is configured to be able to enter the release hole 44 when the inertial mass body 32 moves. That is,
Normally, the inertial mass 32 is in a position closest to the bottom wall 14 of the case 12 by the bias spring 34,
In this state, the inertial mass body 32 is in contact with the slide holding portion 42 of the trigger lever 36, the engaging portion 40 of the trigger lever 36 engages with the body 26 of the ignition pin 24, and the ignition pin 24 is projected. The portion 28 is held at a position where it is pulled out from the through hole 20. Further, when the inertial mass body 32 moves in the direction away from the bottom wall 14, the inertial mass body 32 relatively moves in linear contact with the slide holding portion 42 of the trigger lever 36, and the slide holding portion 42 moves. It is configured to enter the release hole 44.

On the other hand, a safety lever 45 is arranged at the central portion of the plate 16 (between the ignition pin 24 and the cover 18). The safety lever 45 includes a disc-shaped body portion 46,
And a shaft portion 47 integrally fixed to the main body portion 46, and supported by the plate 16 and the cover 18 so as to be movable along the axis. An arm portion 48 is formed on the safety lever 45. Arm 48 is plate 1
6 and extends toward the inertial mass body 32, and a locking portion 50 is formed at the tip. The locking portion 50 is fitted in an engaging groove 52 formed along the axial direction at the end of the inertial mass body 32. As a result, when the locking portion 50 approaches the one end portion 52A of the engagement groove 52 (the state shown in FIG. 1), the inertial mass body 32 is moved to the safety lever 45.
In the state (the state shown in FIG. 2) of being held by the (arm portion 48) so that the movement thereof in the axial direction is blocked and the locking portion 50 is separated from the one end portion 52A of the engaging groove 52 (the state shown in FIG. 2), the inertial mass body 32 is in the axial direction. It is a structure that enables movement.

Further, as shown in FIG. 2, when the locking portion 50 of the safety lever 45 is separated from the one end portion 52A of the engagement groove 52 (close to the other end portion 52B of the engagement groove 52), the safety is further improved. When the lever 45 moves in the axial direction, the locking portion 50 engages with the other end portion 52B of the engaging groove 52 and the inertial mass body 32 is forcibly moved together with the safety lever 45.

A compression coil spring 54 is arranged between the safety lever 45 and the cover 18, and the locking portion 50 is provided.
Always biases the safety lever 45 in a direction approaching the one end portion 52A of the engagement groove 52.

The shaft portion 47 of the safety lever 45 is projected to the outside from the through hole 19 formed in the cover 18, and the operation plate 58 is attached. The operation plate 58 is a release device A.
Can be operated from outside. Release device A
Are arranged corresponding to the operation plate 58 itself, and a pressing portion B and a pressing portion C are formed. By pushing this release device A in the direction of arrow P in FIGS. 1 to 3,
The release device A can be fitted between the operation plate 58 and the cover 18. That is, when the release device A is fitted between the operation plate 58 and the cover 18, the pressing portion B or the pressing portion C is engaged with the operation plate 58, and the locking portion 50 is normally urged by the compression coil spring 54. Moves the safety lever 45 in a state of approaching the one end 52A of the engaging groove 52 in the axial direction by a predetermined amount so that the locking portion 50 causes the one end 5 of the engaging groove 52 to move.
This is a configuration that can be separated from 2A.

A movement restricting portion 55 is provided on the periphery of the through hole 19 formed in the cover 18. The movement restricting portion 55 is partially formed in a thin (notched) state,
It is set to break under a predetermined load. The movement restricting portion 55 corresponds to the step portion 47A provided on the shaft portion 47 of the safety lever 45, and engages with the step portion 47A when the safety lever 45 moves in the axial direction, so that the safety lever 45 moves. This is a configuration that restricts movement. As shown in FIG. 2, when the safety lever 45 moves in the axial direction and the locking portion 50 is separated from the one end portion 52A of the engaging groove 52, the movement limiting portion 55 is in contact with the step portion 47A. The dimensions of each part are set so that

The mechanical ignition type sensor 10 having the above structure.
Is attached to a plate 56 of a gas generator (not shown) of an airbag device or a pretensioner device, for example. The gas generator contains a gas generating agent, and the plate 56 is further provided with a detonator 60 for igniting and burning the gas generating agent. Detonator 60
Is located on the axis of the mechanical ignition sensor 10 in a state where the mechanical ignition sensor 10 is assembled. Therefore, in this assembled state, the through hole 20 of the case 12 faces the detonator 60, and the convex portion 28 of the ignition pin 24 that can project from the through hole 20 can collide with the detonator 60.

Next, the operation of the first embodiment will be described. In the mechanical ignition sensor 10 configured as described above, normally, as shown in FIG. 1, the ignition pin 24 is separated from the detonator 60 against the biasing force of the firing spring 30 (the through hole of the case 12). It is in the position where it was extracted from 20),
In the trigger lever 36, the engaging portion 40 is the main body 2 of the ignition pin 24.
6 to hold the ignition pin 24. further,
The inertial mass body 32 enters the position closest to the bottom wall 14 by the bias spring 34, that is, the rotation locus of the trigger lever 36, and the inner peripheral wall abuts on the slide holding portion 42 of the trigger lever 36. The rotation is blocked and the ignition pin holding state is maintained.

Further, in the safety device operating state (sensor inoperative state), the locking portion 50 of the safety lever 45 approaches the one end portion 52A of the engaging groove 52 of the inertial mass body 32, and this state is the compression coil. It is maintained by the biasing force of the spring 54. Therefore, in this state,
Even if a large acceleration acts on the mechanical ignition sensor 10, the inertial mass body 32 does not move because the one end portion 52A of the engagement groove 52 engages with the locking portion 50 of the safety lever 45 (trigger). (The slide holding portion 42 of the lever 36 does not enter the release hole 44). Therefore, the trigger lever 36 does not rotate and the ignition pin holding state is not released.

On the other hand, when the safety device is released, the release device A is operated to insert the pressing portion B between the operation plate 58 and the cover 18, so that the pressing portion B is engaged with the operation plate 58. To do. As a result, the safety lever 45 is moved in the axial direction against the urging force of the compression coil spring 54, and the locking portion 50 causes the one end portion 52A of the engaging groove 52 as shown in FIG.
The inertial mass body 32 is allowed to move in the axial direction, and the safety device is inoperative (sensor operable state).

Here, when a large acceleration acts on the mechanical ignition sensor 10, the inertial mass body 32 inertially moves toward the plate 16, and the release hole 44 corresponds to the rotation locus of the trigger lever 36. Slide holding part 4 of trigger lever 36
When 2 is opposed to the release hole 44 of the inertial mass body 32 and its holding is released, the trigger lever 36 is pressed by the ignition pin 24 urged by the firing spring 30 in the direction away from the ignition pin 24. Is rotated in a direction away from the ignition pin 24. As a result, the engaging portion 40 of the trigger lever 36 is separated from the main body 26 of the ignition pin 24 to release the holding of the ignition pin 24, so that the ignition pin 24 is moved in the axial direction by the urging force of the firing spring 30. Then, the convex portion 28 projects outward from the through hole 20.

As a result, the convex portion 28 of the ignition pin 24 collides with the detonator 60 and the detonator 60 is ignited. When the detonator 60 is ignited, the gas generating agent of the gas generator is ignited and combusted, and, for example, the air bag device and the pretensioner device are operated.

Further, in the above-described state where the mechanical ignition sensor 10 is prevented from operating by the safety lever 45 (state shown in FIG. 1) and in the operable state (state shown in FIG. 2), the mechanical ignition sensor 10 is inadvertent. Forced ignition is prevented.

That is, the movement restricting portion 55 provided on the cover 18 of the mechanical ignition sensor 10 engages with the shaft portion (step portion 47A) of the safety lever 45, and further moves the safety lever 45 in the axial direction ( Movement in the forced ignition direction) is restricted. Therefore, even if the safety lever 45 is inadvertently operated in this state, the safety lever 45 does not move in the forced ignition direction. Therefore, the mechanical ignition type sensor 1
It is possible to prevent 0 from being inadvertently ignited.

On the other hand, when the mechanical ignition sensor 10 is forcibly actuated when the vehicle is disposed of, it can be forcibly actuated while it is still attached to the vehicle body.

That is, when the mechanical ignition sensor 10 is forcibly operated, when the release device A is further operated to fit the pressing portion C between the operation plate 58 and the cover 18, the pressing portion C is operated. Engage plate 58. As a result, the safety lever 45 is further moved in the axial direction against the biasing force of the compression coil spring 54, and the step portion 47A of the safety lever 45 forcibly presses the movement limiting portion 55 and the movement limiting portion 55 is broken. To be done. As a result, the safety lever 45 can be moved in the axial direction, and the operation plate 58, that is, the safety lever 45 is further moved in the axial direction as the release device A is operated. Therefore, as shown in FIG. 3, the locking portion 50 engages with the other end portion 52B of the engaging groove 52, the inertial mass body 32 is forcibly moved in the axial direction, and the slide holding portion 42 of the trigger lever 36 is moved.
Is opposed to the release hole 44 of the inertial mass body 32, and its holding is released. After that, as in the case of the large acceleration action described above, the ignition pin 24 is moved by the urging force of the firing spring 30, the convex portion 28 collides with the detonator 60, and the detonator 60 is ignited. Is ignited and burned.

Thus, in the mechanical ignition type sensor 10,
Since the inertial mass body 32 is forcibly moved in the axial direction to ignite the detonator 60 by operating the safety lever 45 without applying a predetermined inertial force to the sensor, a mechanical ignition type is used when the vehicle is disposed of. It is not necessary to remove, for example, an airbag device using the sensor 10 from the steering wheel after activating its safety device and dispose of the airbag device, which improves workability. Further, in the mechanical ignition type sensor 10, since the safety lever 45 engageable with the inertial mass body 32 is configured to ignite by simply moving in the axial direction when the sensor is forcibly activated, the mechanism becomes simple.

Further, the movement of the safety lever 45 to the sensor forced ignition position is restricted by the movement restricting portion 55 except when the safety lever 45 is forcibly operated, so that the forced ignition by the careless operation of the safety lever 45 is prevented. can do.

Next, a second embodiment of the present invention will be described. The parts that are basically the same as those in the first embodiment have the first
The same reference numerals as in the embodiment are given and the description thereof is omitted.

FIG. 4 is a sectional view showing the overall structure of a mechanical ignition sensor 70 according to the second embodiment of the present invention.

In the mechanical ignition type sensor 70, a movement limiting section 72 is provided instead of the movement limiting section 55 of the mechanical ignition type sensor 10 according to the first embodiment. Movement restriction unit 72
Is formed on the inner peripheral surface of the plate 16 and corresponds to the main body portion 46 of the safety lever 45. The safety lever 45 engages with the main body portion 46 when the safety lever 45 moves in the axial direction. This is a configuration that restricts movement. As shown in FIG. 5, the safety lever 45 moves in the axial direction to move the locking portion 50.
The dimensions of the respective portions are set so that the movement restricting portion 72 comes into contact with the main body portion 46 in a state in which is separated from the one end portion 52A of the engaging groove 52.

In the mechanical ignition sensor 70 having the above-described structure, in the safety device operating state (sensor inoperative state), as shown in FIG. 4, the engaging portion 50 of the safety lever 45 is engaged with the engaging groove 52 of the inertial mass body 32. This state is maintained by the urging force of the compression coil spring 54 while approaching the one end portion 52A. Therefore, in this state, even if a large acceleration acts on the mechanical ignition sensor 10, the inertial mass body 32 has one end portion 52A of the engagement groove 52 at the safety lever 4A.
It does not move by engaging with the locking portion 50 of the trigger lever 5 (the slide holding portion 42 of the trigger lever 36 is released through the release hole 4).
4) and therefore the trigger lever 36 does not rotate and the ignition pin holding state is not released.

On the other hand, when the safety device is released, the release device A is operated to insert the pressing portion B between the operation plate 58 and the cover 18, so that the pressing portion B engages with the operation plate 58. To do. As a result, the safety lever 45 is moved in the axial direction against the biasing force of the compression coil spring 54, and as shown in FIG.
The inertial mass body 32 is allowed to move in the axial direction, and the safety device is inoperative (sensor operable state).

Here, when a large acceleration acts on the mechanical ignition sensor 70, the inertial mass body 32 inertially moves toward the plate 16 and the slide holding portion 4 of the trigger lever 36.
2 is opposed to the release hole 44 of the inertial mass body 32, and the trigger lever 36 is rotated in a direction away from the ignition pin 24.
As a result, the engaging portion 40 of the trigger lever 36 is separated from the main body 26 of the ignition pin 24 to release the holding of the ignition pin 24, so that the ignition pin 24 is moved in the axial direction by the urging force of the firing spring 30. Then, the convex portion 28 projects outward from the through hole 20. This allows the ignition pin 2
The convex portion 28 of 4 collides with the detonator 60, and the detonator 60 is ignited. When the detonator 60 is ignited, the gas generating agent of the gas generator is ignited and combusted, and, for example, the air bag device and the pretensioner device are operated.

Further, in the above-described operation-blocking state (state shown in FIG. 4) and operable state (state shown in FIG. 5) of the mechanical ignition sensor 70 by the safety lever 45, the mechanical ignition sensor 70 is not prepared. Forced ignition is prevented.

That is, the movement restricting portion 72 provided on the plate 16 of the mechanical ignition type sensor 70 engages with the main body portion 46 of the safety lever 45 to further move the safety lever 45 in the axial direction (in the forced ignition direction). Movement) is restricted. Therefore, even if the safety lever 45 is inadvertently operated in this state, the safety lever 45 does not move in the forced ignition direction. Therefore, it is possible to prevent the mechanical ignition type sensor 70 from being inadvertently forcedly ignited.

On the other hand, when the mechanical ignition type sensor 70 is forcibly operated, the releasing device A is further operated to push the pressing portion C.
When is inserted between the operation plate 58 and the cover 18, the pressing portion C engages with the operation plate 58. As a result, the safety lever 4
5 is further moved in the axial direction, and the body portion 46 of the safety lever 45 forcibly presses the movement limiting portion 72 to move the movement limiting portion 7
2 is broken. As a result, the safety lever 45 can be moved in the axial direction, and the operation plate 58, that is, the safety lever 45 is further moved in the axial direction as the release device A is operated. For this reason, as shown in FIG.
The inertial mass body 32 is forcibly moved in the axial direction by being engaged with the other end portion 52B of 2, and the slide holding portion 42 of the trigger lever 36 faces the release hole 44 of the inertial mass body 32 to release the holding. To be done. After that, the ignition pin 24 is moved to the firing spring 30 as in the case of the large acceleration action.
The projecting portion 28 collides with the detonator 60 to ignite the detonator 60, and the gas generating agent of the gas generator is ignited and burned.

Thus, in the mechanical ignition type sensor 70,
Since the inertial mass body 32 is forcibly moved in the axial direction to ignite the detonator 60 by operating the safety lever 45 without applying a predetermined inertial force to the sensor, a mechanical ignition type is used when the vehicle is disposed of. For example, an airbag device using the sensor 70 does not need to be removed from the steering wheel and disposed of after activating its safety device, which improves workability. Further, in the mechanical ignition sensor 70, since the safety lever 45 engageable with the inertial mass body 32 is configured to ignite by simply moving in the axial direction when the sensor is forcibly activated, the mechanism is simplified.

Further, the movement of the safety lever 45 to the sensor forced ignition position is restricted by the movement restricting portion 72 except when the safety lever 45 is forcibly operated, so that the forced ignition by the careless operation of the safety lever 45 is prevented. can do.

[0050]

As described above, the safety structure of the mechanical ignition type sensor forcible actuating device according to the present invention can easily force the mechanical ignition type sensor to be forcibly operated while being mounted on the vehicle when the vehicle is scrapped. Not only is the safety and workability improved, but it also has an excellent effect that forced ignition due to careless operation of the safety lever can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an overall configuration of a mechanical ignition sensor according to a first embodiment to which the present invention is applied, in a safety device operating state.

FIG. 2 is a cross-sectional view showing a general configuration of a mechanical ignition sensor according to a first embodiment to which the present invention is applied, in a safety device released state.

FIG. 3 is a sectional view showing a general configuration of a mechanical ignition sensor according to a first embodiment to which the present invention is applied, in a forced ignition state.

FIG. 4 is a cross-sectional view showing an overall configuration of a mechanical ignition sensor according to a second embodiment of the present invention, in a safety device operating state.

FIG. 5 is a cross-sectional view showing a general configuration of a mechanical ignition sensor according to a second embodiment of the present invention, in a safety device released state.

FIG. 6 is a cross-sectional view showing an overall configuration of a mechanical ignition sensor according to a second embodiment of the present invention, in a forced ignition state.

[Explanation of symbols]

 10 Mechanical Ignition Sensor 24 Ignition Pin 32 Inertial Mass Body 36 Trigger Lever 45 Safety Lever 48 Arm 50 Locking Part 52 Engagement Groove 55 Movement Restricting Part 70 Mechanical Ignition Sensor 72 Movement Restricting Part

Claims (1)

[Claims] 1. A mechanical ignition sensor that is ignited by an inertial force when a predetermined load is applied, and includes a safety lever that moves by an external operation, and operates the mechanical ignition sensor according to the movement of the safety lever. A safety structure of a mechanical ignition type sensor forced actuation device that causes a blocked state, an operable state, and a forced ignition, wherein the mechanical ignition type sensor engages with the safety lever in an operation blocked state and an operable state of the safety lever. A movement limiting portion is provided in the main body portion of the mechanical ignition type sensor that restricts movement in the forced ignition direction and breaks only during the forced ignition to allow movement of the safety lever in the forced ignition direction. Safety structure of mechanical ignition type sensor forced activation device characterized by.