JP3037112B2 - Pyrotechnic ignition device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition device for igniting a pyrotechnic such as a smoke tube and a light emitting tube by an electric signal.
The present invention relates to an ignition device for preventing inadvertent ignition in replacement work of a pyrotechnic product or the like.

[0002]

2. Description of the Related Art As shown in FIGS. 8 and 9, for example, an ignition device for igniting a pyrotechnic such as a smoke tube is an operation device 10 for an operator to perform an ignition operation and a device base for inserting the smoke tube 1. Stand 2
0 is connected with the cable 5 and the operating device 10
The ignition of the smoke canister 1 is performed by remote control from the user. FIG.
In the conventional ignition device shown in FIG. 1, the smoke tube 1 from which the tangent line 2 is drawn is inserted into an insertion portion 21 provided upright on the device base 20, and the plug 3 at the tip of the tangent line 2 is placed on the base 20. The smoke tube 1 is held on the base 20 by being fitted to the provided plug seat 22.

[0003] Then, as shown in FIG.
Is provided with a power supply 11 and an ignition switch 12.
A circuit in which the ignition switch 12 and the ignition switch 12 are connected in series is connected to the base 20 via the cable 5. On the base 20 side, the cable 5 is connected to the smoke tube 1 via the plug seat 22, the plug 3, and the tangent line 2, and a firing circuit for connecting the power supply 11 of the operating device 10 to the smoke tube 1 is formed. . The ignition switch 12 provided in the ignition circuit is normally in an off state, and when the operator presses the ignition button 13 of the operation device 10, the ignition switch 12 is turned on,
The ignition current is supplied from the power supply 11 to the smoke canister 1 via the ignition circuit, and the smoke canister 1 is ignited.

[0004] The smoke tube 1 that has been ignited and emits smoke and has been used is replaced by a new smoke tube by replacement work by an operator. In this replacement work, after the plug 3 is removed from the plug seat 22 and the used smoke generating tube 1 is extracted from the insertion portion 21, a new smoke generating tube is inserted into the insertion portion 21 and the plug 3 is inserted. Is fitted to the plug seat 22.

[0005]

Here, in the above-described operation of replacing the smoke tube, after connecting the plug 3 of the new smoke tube to the plug seat 22 and connecting the smoke tube to the ignition circuit, If the ignition switch 12 is accidentally turned on, a situation arises in which the smoke tube inadvertently emits smoke. In such a case, there is a problem that the replacement operation with a new smoke tube must be performed again during the replacement operation, and the replacement operation becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a pyrotechnic ignition device which guarantees a reliable replacement operation of a pyrotechnic such as a smoke tube.

[0007]

To achieve the above object, a pyrotechnic ignition device according to the present invention includes a base having a firing circuit for holding a pyrotechnic and igniting the pyrotechnic; A pyrotechnic ignition device comprising: an operating device connected to the table via a cable to transmit an ignition signal to the ignition circuit;
A locking member that engages with the pyrotechnic and prevents the pyrotechnic from being detached from the base; and a locking member that engages with the locking member and prevents movement of the locking member that is engaged with the pyrotechnic. A fixing member, a lock member that engages with the fixing member and prevents the movement of the fixing member, and an operating member that is connected to the lock member and releases the engagement with the fixing member by driving the lock member and An operation piece that comes into contact with the fixed member in a state where the lock member is engaged with the fixed member; an elastic member that urges the operation piece toward the fixed member; and an operation member provided in the ignition circuit, wherein the operation member is a lock member. A first switch for shutting off a circuit in conjunction with an operation of releasing engagement with the fixed member, and a circuit provided in the ignition circuit and linked with movement of an operation piece beyond a contact position with the fixed member. And a second switch for shutting off.

[0008]

In the pyrotechnic firing apparatus according to the present invention, the pyrotechnic held on the base is prevented from coming off by engaging the locking member. It is necessary to move the locking member to release the engagement. In this case, the movement of the locking member is prevented by engaging the fixing member, and it is necessary for the operator to move the fixing member to release the engagement with the locking member. The movement is prevented by the engagement of the lock member. The engagement between the lock member and the fixing member can be released by the operation of the operation member by the operator, and therefore, only when the operator operates the operation member, the movement of the fixing member becomes possible for the first time, and the movement of the locking member. Can be released and the pyrotechnic can be removed from the base by releasing the stopper.

In order to make the pyrotechnic product detachable from the base as described above, the first switch provided in the ignition circuit is turned off to cut off the circuit when the operating member is operated, Preventing pyrotechnics from igniting during replacement of pyrotechnics. In the state where the movement of the locking member is prevented as described above, the operation piece is urged against the fixing member and is in contact with the fixing member. With the movement, the operation piece is moved by the urging force. Along with the movement of the operation piece, the second switch provided in the ignition circuit is turned off to shut off the circuit, thereby preventing the ignition of the pyrotechnic during the replacement of the pyrotechnic.

That is, when replacing a pyrotechnic, the operator operates the operating member to move the fixing member,
The locking member is moved to release the engagement with the pyrotechnic. Then, with this operation, the first switch and the second switch cut off the ignition circuit, thereby preventing accidental ignition of the pyrotechnic. Further, even if the operator accidentally operates the operation member to turn on the first switch during the replacement work, the second switch remains in the off state, so that the pyrotechnic Inadvertent firing is prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pyrotechnic ignition device according to an embodiment of the present invention will be described with reference to the drawings. The same parts as those in the above-described conventional example are denoted by the same reference numerals, and overlapping description will be omitted. The pyrotechnic ignition device of the present embodiment has the configuration shown in FIGS. 1 to 7, and the base 20 holds the smoke tube 1 as a pyrotechnic,
It is connected to the operation device 10 via the cable 5.

The base 20 has a plug seat 22, a plug 3, and a tangent line 2.
The ignition circuit connected to the smoke canister 1 through the internal combustion engine is provided.
The ignition switch 12 is connected to the series circuit via the cable 5. A first switch 31 and a second switch 32 are interposed in the ignition circuit built in the base 20, and the ignition circuit can be shut off by turning on and off the switches 31 and 32. .

At one end of the base 20, a lid 34 as a locking member is provided so as to be openable and closable by a pivot 33, and a hole 35 having a diameter slightly smaller than the outer diameter of the smoke tube 1 is formed in the lid 34. ing. Therefore, by closing the lid 34, the insertion portion 21 and the plug portion are covered and protected from the weather, and the smoke emitting tube 1 loaded in the insertion portion 21 has its smoke emitting end face exposed to the outside through the hole 35. I do. Further, since the diameter of the hole 35 is smaller than the outer diameter of the smoke canister 1, when the lid 34 is closed, the smoke canister 1 engages with the hole edge of the lid 34 and
From being trapped.

A pair of blocks 36 are provided at the tip of the lid 34, and these blocks 36 are formed with through holes 37 having the same diameter and the same diameter. On the other hand, the base 20
At the end corresponding to the block 36, a convex portion 23 is provided, and the convex portion 23 has a through hole 24 corresponding to the through hole 37.
Are formed. Therefore, when the lid 34 is closed, the block 36 is fitted on both sides of the projection 23 and the through hole 37 is formed.
And the through hole 24 are continuous. The ignition device of this embodiment is provided with a lock shaft 38 as a fixing member that engages with the lid 34, and the lock shaft 38 can be inserted into the through holes 37 and 24. Therefore, lid 3
By closing the lock shaft 38 and inserting the lock shaft 38 into the through holes 37 and 24, the lock shaft 38
6 to prevent the lid 34 from moving (rotating) in the opening direction. The lock shaft 38 is provided with a hole 39 such as a retaining member to be described later.

A concave portion 40 is formed on the end surface of the base 20 on the side where the convex portion 23 is provided, and a knob 41 as an operation member is rotatably provided in the concave portion 40. The knob 41 is connected to a first switch 31 of a rotary type. By rotating the knob 41 to two positions of “operation” and “exchange”, the first switch 3 is correspondingly moved.
1 is switched between an on state and an off state. As shown in FIGS. 5 to 7 showing the cross-sectional structure of the base end, a knob 41 is provided.
A cam 42 is provided on the rotation shaft of the lock shaft 38.
A lock pin 43 as a lock member for restricting the movement of is engaged. The lock pin 43 is provided on the base 20 so as to be movable in the axial direction. When the knob 41 is set to the "operation" position, the lock pin 43 is pushed by the cam 42 so that the lock pin 43 projects into the through hole 24 at right angles. I do.

The lock pin 43 has a smaller diameter than the hole 39 provided in the lock shaft 38. The lock pin 43 projects when the cover 34 is closed and the lock shaft 38 is inserted into the through holes 37 and 24. Are adapted to be inserted into the holes 39. Therefore, when the knob 41 is set to the "operating" position with the closed lid 34 locked by the lock shaft 38, the lock pin 43 is engaged with the lock shaft 38 to move the lock shaft 38 as shown in FIG. It is designed to block.

An operation piece 44 is provided on the base 20 so as to be movable in the axial direction. The operation piece 44 has a tip end projecting into the through hole 24 at right angles. The base end of the operation piece 44 is connected to the second switch 32. When the distal end of the operation piece 44 protrudes into the through hole 24, the second switch 32 is turned off, and the operation piece 44 retreats and the tip ends. In a state where the second switch 32 is retracted outside the through hole 24, the second switch 32 is turned on.

A compression spring 46 as an elastic member is interposed between a bracket 45 for attaching the second switch 32 to the base 20 and the operation piece 44. It is constantly urged in a direction to protrude into the through hole 24. Accordingly, as shown in FIG. 4, in a state where the closed lid 34 is locked by being inserted into the through holes 37 and the through holes 24 as shown in FIG.
And is pushed back against the biasing force, and the second switch 3
2 while the lock shaft 3 is turned on as shown in FIG.
In a state where the operating piece 44 is pulled out from the through hole 37 and the through hole 24, the operating piece 44 protrudes into the through hole 24 beyond the contact position with the lock shaft 38 by the urging force, and the second switch 32 is turned off.

According to the ignition device having the above configuration, the lid 34 is normally closed, the lock shaft 38 is inserted into the through holes 37 and 24, and the knob 41 is "operated", as shown in FIG.
The lock pin 43 into the hole 39 of the lock shaft 38.
Are engaged, the lock shaft 38 is prevented from coming off, and the closed lid 34 is locked. In this state, the first switch 31 is on, and the second switch 32 is also on because the operating piece 44 is in contact with the lock shaft 38 and is pushed down. Therefore, when the operator turns on the ignition switch 12 by pressing the ignition button 13 of the operating device 10,
The ignition current is supplied from the power supply 11 to the smoke canister 1 via the ignition circuit, and the smoke canister 1 is ignited.

Next, in the operation for replacing the used smoke canister, first, the knob 41 is turned to the "replacement" position, the lock pin 43 is pulled out from the hole 39 of the lock shaft, and the lock pin 4 is removed.
3 is disengaged from the lock shaft 38. Then, the lock shaft 38 is extracted from the through holes 37 and the through holes 24 to release the engagement between the lock shaft 38 and the lid 34, and the lid 34 is opened to replace the smoke tube 1 with a new one. During this exchange,
By turning the knob 41 to the "exchange" position, the first switch 31 is turned off, and the lock shaft 38 is pulled out of the through hole 24 so that the operation piece 44 projects into the through hole 24. 32 is turned off.
Therefore, even if the ignition circuit is interrupted by the two switches 31 and 32 and the ignition switch 12 of the operating device 10 is turned on, the ignition current is not supplied to the smoke tube 1 and the smoke tube 1 is inadvertent. Ignition is reliably prevented.

Here, in the above exchange work, the knob 4
1 remains in the "actuated" position (ie, the first switch 31).
And the second switch 32 remain on) the lock shaft 38
In the case where the lock pin 43 is engaged with the lock shaft 38 when pulling out from the through hole 37 and the through hole 24, the pull out of the lock shaft 38 is prevented, and the operator can recognize the erroneous operation. Inadvertent ignition of the smoke canister 1 due to such erroneous operation is eliminated.

After the replacement with the new smoke tube 1 is completed, the lid 34 is closed, the lock shaft 38 is inserted into the through holes 37 and 24, and the knob 41 is turned to the "operating" position for replacement. Finish the work. By inserting the lock shaft 38, the operation piece 4
4 is pushed down, the second switch 32 is turned on, and the rotation of the knob 41 prevents the lock shaft 38 from coming off, and the first switch 31 is turned on.
Therefore, when the replacement operation is completed as described above, the ignition switch 12 of the operating device 10 is turned on, so that the ignition current is supplied from the power supply 11 to the smoke tube 1 and the smoke tube 1 is remotely operated. Can be ignited.

Here, in the above operation, when the knob 41 is turned to the "operating" position without closing the lock shaft 38 and attaching the lock shaft 38 to the through holes 37 and 24 after closing the lid 34, the first operation is performed. Although the switch 31 is turned on, as shown in FIG. 6, the lock shaft 38 comes into contact with the lock pin 43 protruding into the through hole 24 to prevent the lock shaft 38 from being inserted into the through hole 24. Thereby, an erroneous operation can be recognized. Further, in this case, since the lock shaft 38 cannot be inserted into the through hole 24, the operation piece 44 urged by the spring 46 projects into the through hole 24, and the second switch 3
2 is off. Therefore, the ignition circuit is shut off by the second switch 32, and the careless ignition of the smoke tube 1 due to such an erroneous operation is eliminated.

In the above operation, as shown in FIG. 7, when the lock shaft 38 is inserted into the through hole 24 with the lid 34 kept open, the operation piece 44 is pushed down and the second Although the switch 32 is turned on, the knob 41 remains in the "exchange" position, so that the first switch 31 is turned on.
Is in the off state, the ignition circuit is shut off by the first switch 31, and the careless ignition of the smoke tube 1 due to such an erroneous operation is eliminated. Further, in this case, the position of the lock shaft hole 39 and the lock pin 43 is shifted, and the lock pin 43 cannot be moved upward. Therefore, turning the knob 41 to the "operating" position is prevented, the first switch 31 is kept in the off state, and the operator can thereby recognize an erroneous operation.

Therefore, according to the above-described ignition device,
If the operator makes an erroneous operation during the replacement operation of the smoke canister 1, the operator can promptly recognize the erroneous operation, and the ignition circuit is shut off to prevent inadvertent ignition of the smoke canister 1. be able to. Further, in the ignition device of the present embodiment, since the locking member that engages with the smoke tube 1 and prevents the smoke tube 1 from coming off is used as the lid 34, the connection portion of the smoke tube 1, the tangential line 2, and the plugs 3, 22 is formed. These portions are covered with the lid 34 to protect these portions from wind and rain, and to prevent the smoke tube 1 from coming off due to the base 20 falling down.

In the above embodiment, the lid 34 is shown as a locking member for preventing the smoke canister 1 from coming off from the base 20. However, for example, a frame type engaging member which is engaged with the upper end of the smoke canister 1 is used. A stop member can also be used. In short, the form of the lock member is not particularly limited as long as it can be engaged with the smoke generating tube 1 loaded on the base 20 to prevent the tube from coming off. Further, in the above-described embodiment, the shaft-type lock shaft 38 is shown as a fixing member for preventing the movement of the locking member. The opening of the lid 34 may be prevented by engaging with the base 20. In short, if the opening of the lid 34 can be prevented by engaging with the base 20 and the lid 34, the form of the fixing member is particularly limited. There is no.

In the above-described embodiment, the lock pin 43 inserted into the hole 39 is shown as a lock member for preventing the movement of the fixing member. The member may form a lock member,
The point is that it is only necessary to engage the lock shaft 38 in conjunction with the operation of the knob 41, and the form of the lock member is not particularly limited. In the above-described embodiment, the rotary knob 41 is shown as the operating member for driving the lock member. However, the operating member may be, for example, a slide-type operating member. The form of the operation member is not particularly limited as long as the lock pin 43 can be driven.

In the above-described embodiment, the pin-shaped operation piece 44 is shown as the operation piece that comes into contact with the fixing member. There is no particular limitation on the form. In the above embodiment,
Although the spring 46 is shown as an elastic member for urging the operation piece,
For example, a rubber material or the like may be used. In short, an elastic body that urges the operation piece 44 in a direction in which the operation piece 44 abuts on the lock shaft 38 may be used.

In the above embodiment, the first switch 31 of the rotary type is used as the first switch linked to the operating member.
However, it is only necessary that the ignition circuit can be cut off in conjunction with the operation, and the ignition circuit can be arbitrarily changed according to the form of the operation member. Also, the second switch 32 linked to the operation piece
Is the same, and can be arbitrarily changed according to the form of the operation piece 44. In the above-described embodiment, the power supply 11 is built in the operating device 10 and the ignition current is supplied to the smoke canister 1 as an ignition signal.
An electromagnetic switch for connecting the power supply and the ignition circuit to the power supply on the base 20 side and the power supply may be provided, and an ignition signal for turning on / off the electromagnetic switch may be transmitted from the operation device 10.

[0030]

As described above, according to the pyrotechnic ignition apparatus of the present invention, two switches are provided which are turned on and off in relation to the movement of each member when replacing the pyrotechnic. In addition, since the movement of each member is restricted in the erroneous operation procedure, inadvertent ignition of the pyrotechnic product can be reliably prevented by the erroneous operation, and the operator can quickly recognize the erroneous operation. Therefore, it is possible to prevent the occurrence of a situation such as the necessity of performing a replacement operation with a new smoke tube again during the replacement operation, and it is possible to ensure a reliable replacement operation of the pyrotechnic.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a pyrotechnic ignition device according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of the arrow A in FIG.

FIG. 3 is a conceptual diagram showing a circuit configuration of a pyrotechnic ignition device according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating an operation in a state where a lid is closed.

FIG. 5 is a cross-sectional view illustrating an operation in a state where a lid is opened.

FIG. 6 is a cross-sectional view illustrating an operation at the time of an erroneous operation.

FIG. 7 is a cross-sectional view illustrating an operation at the time of an erroneous operation.

FIG. 8 is an overall perspective view showing a conventional pyrotechnic ignition device.

FIG. 9 is a conceptual diagram showing a circuit configuration of a conventional pyrotechnic ignition device.

[Explanation of symbols]

 1 Smoke Canister (pyrotechnic), 10 Operating Device, 20 Base, 31 First Switch, 32 Second Switch, 34 Lid (Locking Member), 38 Lock Shaft (Fixing Member), 39 Lock Pin (Locking Member) , 44 operation piece, 46 spring (elastic member)

Claims (1)

(57) [Claims] 1. A base having an ignition circuit for holding a pyrotechnic and igniting the pyrotechnic, and an operating device connected to the base via a cable and transmitting an ignition signal to the ignition circuit. In the pyrotechnic igniter provided, the base includes a locking member that engages with the pyrotechnic and prevents the pyrotechnic from coming off, and engages with the locking member and engages with the pyrotechnic. A fixed member that prevents the movement of the locking member, a lock member that engages with the fixed member and prevents the movement of the fixed member, and a fixed member that is connected to the lock member and drives the lock member to drive the fixed member. An operation member for releasing the engagement, an operation piece that comes into contact with the fixed member in a state where the lock member is engaged with the fixed member, an elastic member for urging the operation piece toward the fixed member, The operation member is provided so that the operation member releases the engagement between the lock member and the fixed member. And a second switch provided in the ignition circuit to cut off the circuit in conjunction with the operation piece moving beyond the contact position with the fixed member. A pyrotechnic ignition device characterized in that: