JP6385738B2 - Cup container for gunpowder filling - Google Patents

Description

  The present invention relates to an explosive filling cup container that is suitable as a charge transfer container used in combination with an igniter in a gas generator or a rocket propulsion device.

A gas generator is used as an air bag inflating means in an air bag device mounted on an automobile.
As a means for using a gas generating agent as a gas source of a gas generator, a combination of an electric igniter and an explosive (powder transfer) is widely used as an ignition means for igniting and burning the gas generating agent. .

In general, the charge transfer agent is filled in an aluminum cup container 50 as shown in FIG. 5 and then the opening is closed with a lid. The cup container 50 is composed of a cup body 51 and a lid 52 as shown in FIG.
When filling the aluminum cup container 50 with the charge, in order to prevent gaps in the charge after filling, the cup body 51 is divided into multiple small portions while gently vibrating. A method of filling the transfer charge 60 is employed.
After the filling is completed, the cup body 51 is covered with a lid 52, and both the flange 53 of the opening of the cup body 51 and the peripheral edge 54 of the lid 52 are bent and fixed to each other.
However, such a filling method has a problem that productivity is poor.

Patent Document 1 describes an invention of an assembly including an extendable actuator device that contains a reaction charge.
The actuator device 20 shown in FIG. 1 has an expandable waveform 40 at the tip of the storage chamber 26 filled with the reaction charge 28. The waveform 40 extends as shown in FIGS. 2A to 2B, for example, acts to break the electric conductor element 250 as shown in FIGS. 3A to 3B. It is not intended for use in

Japanese Patent No. 4602988

  An object of the present invention is to provide a cup container for filling explosives suitable as a filling container for a charge transfer used in combination with an igniter in a gas generator.

The present invention
A cup container for filling explosives,
The cup container has a cup body and a lid for closing the opening of the cup body,
The cup body portion has a structure in which at least a part of the peripheral surface thereof can be expanded and contracted in the axial direction, and the length in the axial direction can be adjusted in accordance with the charged amount of the explosive. A cup container is provided.

The cup body has a bottom surface and a peripheral surface, and a portion facing the bottom surface in the axial direction is an opening.
The lid portion has a shape and a size that can close the opening of the cup body.
What has a vent hole can be used for a cover part. The vent hole functions as an air vent hole when filling the explosive. The air holes can be closed with a metal sealing tape after filling with explosives.
The cup container (cup body and lid) is preferably made of aluminum or an alloy thereof, copper or an alloy thereof and plastic.

The cup body portion has a structure in which at least a part thereof can be expanded and contracted in the axial direction.
A bellows structure can be used as the structure that can expand and contract in the axial direction.
The cup body preferably has a ratio (L1 / L2) of 1.3 or more of the maximum length (length when stretched most) L1 and the minimum length (length when shunted most) L2.

The present invention also provides
A cup container for filling explosives,
The cup container has a cup body and a lid for closing the opening of the cup body,
A cup for explosive filling in which the lid portion has a cup shape with a peripheral surface having a structure that can expand and contract with a bottom surface, and the length in the axial direction can be adjusted in accordance with the filling amount of the explosive. Provide a container.

The cup body has a bottom surface and a peripheral surface, and a portion facing the bottom surface in the axial direction is an opening.
The lid portion has a cup shape having a bottom surface and a peripheral surface having a telescopic structure.
A bellows structure can be used as the structure that can expand and contract in the axial direction.
What has a vent hole can be used for a cover part. The vent hole functions as an air vent hole when filling the explosive. The air holes can be closed with a metal sealing tape after filling with explosives.
The cup container (cup body and lid) is preferably made of aluminum or an alloy thereof, copper or an alloy thereof and plastic.

The cup container for filling an explosive of the present invention can be used as a filling container for an explosive such as a powder explosive or a granular explosive, but for filling an explosive used in combination with an igniter in a gas generator. Suitable as a container.
In addition, as a cup container for filling explosives, the cup-shaped lid portion provided with the above-mentioned bottom surface and a peripheral surface having a stretchable structure, and at least a part of the peripheral surface has a structure that can be stretched in the axial direction. The cup body part can be combined.

  According to the cup container for filling explosives of the present invention, explosive filling workability is good, and no gap is formed in the explosive after filling, so that productivity can be improved.

(A) is a front view of a cup container (but not closed with a lid) made of a cup body when the lid is extended to the maximum (at the maximum length), and (b) is the lid and most It is a front view of the cup container which consists of a cup main-body part when shortened (at the time of minimum length). The enlarged view of the part enclosed with the circle in Fig.1 (a). (A) is a front view of the cover part used with the cup container of another embodiment, (b) is a front view of the cup main-body part used with the cup container of another embodiment. It is a figure for demonstrating the filling method of the explosive when using the cover part and cup main-body part of FIG. 3, (a) is a front view before pushing in an explosive (only a cup main-body part sectional drawing), (b) FIG. 3 is a front view after the gunpowder is pushed in (only the cup body is a cross-sectional view). It is a front view of the cup container which consists of a cover part and a cup main-body part of a prior art, (a) is before putting a cover part on a cup main-body part, (b) was covering and fixing the cover part on a cup main-body part. Later.

<Cup container for first explosive filling>
The cup container 1 for filling explosives has a cup body 10 and a lid 20 for closing the opening 12 of the cup body 10.

The cup body 10 includes a bottom surface 11, an opening 12, a peripheral surface 13, and a bellows structure portion 14 that is formed on a part of the peripheral surface 13 and that can expand and contract in the axis X direction. The opening 12 has a flange portion 12a.
In FIG. 1, the peripheral surface 13 of the cup body 10 is composed of the bellows structure portion 14 and the remaining peripheral surface (the portion that is not the bellows structure portion 14), but the entire peripheral surface 13 is composed of the bellows structure portion. There may be.
The remaining peripheral surface includes a lower peripheral surface 15b on the bottom surface 11 side and an upper peripheral surface 15a on the opening 12 side.
From the standpoint of maintaining the strength of the cup body 10 and explosive filling workability, as shown in FIG. 1, one or both of the lower peripheral surface 15b on the bottom surface 11 side and the upper peripheral surface 15a on the opening portion 12 side have a bellows structure. What is not is preferable.

The cup body 10 is made to extend or shorten the length of the cup body 10 (the length of the peripheral surface 13) by extending or shortening the bellows structure 14 in accordance with the amount of explosive filling. It is something that can be done.
FIG. 1A shows a state in which the bellows structure portion 14 of the cup body 10 is extended to the longest, and the length (L1) of the cup body 10 in the axis X direction is the maximum.
When pulled in the direction of the axis X within the range of elastic deformation that does not lead to plastic deformation in the state of FIG. 1 (a), the bellows structure portion 14 is considered to further extend, but the tension in the direction of the axis X is removed, and the bellows structure When the part 14 is left horizontally, the bellows structure part 14 contracts due to the reaction of elastic deformation. The length at this time is the maximum length L1.
FIG. 1B shows a state in which the bellows structure portion 14 of the cup body portion 10 is contracted to the smallest, and the length (L2) in the axis X direction of the cup body portion 10 is minimum.
The ratio (L1 / L2) between the maximum length L1 and the minimum length L2 of the cup body 10 is preferably 1.3 or more.

As shown in FIG. 2, the bellows structure portion 14 of the cup main body portion 10 has crest portions 14 a and trough portions 14 b formed alternately in the axis X direction.
The top of the peak portion 14a is preferably a flat surface as shown in FIG.

The lid 20 has a shape and a size that can close the opening 12 of the cup body 10.
As the lid portion 20, one having a vent hole (not shown) and a closing means for the vent hole can be used.

  The cup body portion 10 and the lid portion 20 are preferably made of the same material, and all are preferably made of aluminum or an alloy thereof, copper or an alloy thereof and plastic.

For example, the cup body 10 and the lid 20 can be fixed to each other in the same manner as in FIG. In addition, a sealant agent (for example, silicone sealant) can be applied to the boundary portion between the cup body 10 and the lid part 20 as necessary. After the sealant agent is applied, the cup body part 10 and the lid part 20 are For example, they can be fixed to each other in the same manner as in FIG.
The cup container for filling explosives of the present invention can be used as a filling container for powdery powders or granular explosives in general, and in particular, transmission of boron nitrate used in combination with an igniter in a gas generator. Suitable as a container for filling with explosives.

<Filling method of gunpowder using first explosive filling cup container>
A method of filling a charge transfer agent used in combination with an igniter in a gas generator using the cup container 1 for charging an explosive of the present invention shown in FIG. 1 will be described.
Boron nitrate is widely used as a transfer agent used in combination with an igniter in a gas generator.

In the first step, the cup body 10 is held in the state of extending in the direction of the axis X up to the initial length (L3) (FIG. 1A), and a required amount of explosive charge is introduced into the interior at once.
Here, the initial length (L3) is adjusted according to the amount of the transfer charge, and the length of the bellows structure portion 14 is set so that the transfer charge enters the position close to the opening 12 of the cup body 10. It is preferable to adjust.
The initial length (L3) is a length that extends the bellows structure portion 14 to L1 at the maximum, and L1 = L3 or L1> L3.

In the next step, the bellows structure part is evacuated while ventilating the air inside the cup body part 10 (the air in the gaps between the explosives) in the state where the opening part 12 of the cup body part 10 is covered with the lid part 30. 14 is compressed in the direction of the axis X.
In the previous step, it is preferable that the transfer charge is contained up to a position close to the opening 12 of the cup body 10 because the transfer charge itself can be pushed by the lid 20 and the gap between the transfer charge tends to disappear.
The air in the gap portion present between the charge transfer agents can be extracted from the gap between the opening 12 of the cup body 10 and the lid 20, but the lid 20 has a vent hole, Air may be extracted from the vent hole. The vent is closed with a sealing tape made of the same material as the lid 20 after the work is completed.
Furthermore, it is preferable to use the bellows structure portion 14 having the shape shown in FIG. 2 because it is difficult for the charge transfer agent to be sandwiched in the inner space portion of the mountain portion 14a when the bellows structure portion 14 is compressed.

In the next step, after the cup body 10 is compressed in the direction of the axis X to the final length (L4) (FIG. 1B), the lid 20 is fixed to the opening 12 of the cup body 10. .
Here, the final length (L4) is adjusted according to the amount of the transfer charge, and the transfer charge moves in the space (the transfer charge filling space) surrounded by the cup body 10 and the lid 20. It is the length which can maintain the state without such a gap.
If there is a gap that moves the transfer charge in the charge transfer space, the ignition may vary, resulting in an unstable combustion state, or the transfer charge may collide with each other due to external vibrations and pulverize. Because.
The final length (L4) is a length at which the bellows structure portion 14 is contracted to be at least L2, and L2 = L4 or L2 <L4. As a matter of course, the initial length L3> the final length L4.

The method for fixing the cup body 10 and the lid 20 is not particularly limited, and can be fixed in the same manner as in FIG.
In FIG. 1B, the peripheral surface 13 is in a state in which the bellows structure portion 14 protrudes slightly in the radial direction from the remaining peripheral surfaces 15 a and 15 b, but the flange portion 12 a of the opening portion 12. It is the same size as the diameter including.

<Second explosive cup container>
As shown in FIGS. 3A and 3B, the cup container 100 for filling explosives has a cup main body 110 and a lid 120 for closing the opening 112 of the cup main body 110. .

  The cup body 110 includes a bottom surface 111, an opening 112, and a peripheral surface 113, and the opening 112 has a flange portion 112a.

The lid 120 has a cup shape having a bottom surface 121, an opening 122, and a peripheral surface 123 having a stretchable structure, and the opening 122 has a flange 122a.
The peripheral surface 123 having a stretchable structure has a bellows structure, and the length can be adjusted by extending or contracting the bellows portion of the peripheral surface 123 according to the amount of explosive filling. is there.
The maximum length of the peripheral surface 123 is less than the depth of the cup body 110. The difference between the depth of the cup main body 110 and the length of the peripheral surface 123 at the maximum extension is the minimum explosive filling space.
As the bottom surface 121 of the lid portion 120, one having a vent hole (not shown) and a closing means for the vent hole can be used.

  The cup body portion 110 and the lid portion 120 are preferably made of the same material, and preferably both are made of aluminum or an alloy thereof, copper or an alloy thereof and plastic.

For example, the cup body 110 and the lid 120 can be fixed to each other in the same manner as in FIG.
The cup container for filling explosives of the present invention can be used as a filling container for powdery powders or granular explosives in general, and in particular, transmission of boron nitrate used in combination with an igniter in a gas generator. Suitable as a container for filling with explosives.

<Filling method of gunpowder using second explosive filling cup container>
This will be described with reference to FIGS. In addition, although demonstrated separately from the 1st process to the 4th process, a 2nd process and a 3rd process can be implemented as one continuous process.

In the first step, the charge transfer agent 160 is introduced into the cup body 110 (amount shown in FIG. 4A).
Next, in the second step, as shown in FIG. 4 (a), after covering the lid portion 120 from the opening portion 112 of the cup body portion 110, the bottom surface 121 is brought into contact with the surface of the charge transfer agent 160. The peripheral surface 123 of the bellows structure is extended.

Next, in the third step, the peripheral surface 123 is further extended in a state where the bottom surface 121 of the lid portion 120 is in contact with the surface of the charge transfer agent 160, and the transfer charge 160 is pushed in (FIG. 4B).
In this pushing-in step, the internal air can be extracted from, for example, a vent formed in the bottom surface 121 of the lid 120. The vent hole is closed with a seal tape made of the same material as the lid 120.

Next, in the fourth step, the flange portion 112a of the cup body portion 110 and the flange portion 122a of the lid portion 120 are folded together and fixed together.
In the first step, a required amount of the transfer charge 160 can be charged at a time, but can also be charged in a plurality of times. In this case, the first to third steps are repeated as many times as the number of times the transfer charge 160 is charged.

In the explosive filling method using the second explosive filling cup container, the lid portion 120 used to push in the transfer powder 160 is used as the lid portion 120 as it is after the pushing step.
For this reason, even if a part of the charge transfer agent 160 is attached to the bellows portion of the peripheral surface 123 of the lid 120, the safety and operability are not affected.

DESCRIPTION OF SYMBOLS 1 Cup container for gunpowder filling 10 Cup body part 12 Opening part 14 Bellows structure part 20 Lid part 100 Cup container for gunpowder filling
110 Cup body
112 opening
120 lid
122 opening
123 Circumference (bellows structure part)

Claims (5)

A cup container for filling explosives,
The cup container has a cup body and a lid for closing the opening of the cup body,
The cup body portion has a structure in which at least a part of the peripheral surface thereof can be expanded and contracted in the axial direction, and the length in the axial direction can be adjusted in accordance with the charged amount of the explosive. Cup container. A cup container for filling explosives,
The cup container has a cup body and a lid for closing the opening of the cup body,
A cup for explosive filling in which the lid portion has a cup shape with a peripheral surface having a structure that can expand and contract with a bottom surface, and the length in the axial direction can be adjusted in accordance with the filling amount of the explosive. container. The cup container for filling explosives according to claim 1 or 2, wherein the cup body part or the lid part has a bellows structure that is extendable in the axial direction.   The cup container for explosive filling according to any one of claims 1 to 3, wherein the cup container is made of aluminum or an alloy thereof, copper or an alloy thereof and plastic.   The cup container for filling an explosive according to any one of claims 1 to 4, which is a container for filling an explosive used in combination with an igniter in a gas generator.

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