JPH0650519Y2 - Fixed end structure for linear pyrotechnics - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) This invention is a linear pyrotechnic used for fixing the ends of linear pyrotechnics such as detonating wires and extended lines. The present invention relates to an improvement in a structure for fixing an end portion of a product.

(Prior Art) Conventionally, as an end fixing structure for a linear pyrotechnic as described above, for example, one as shown in FIG. 10 (SPACE ORDNANCE S
YSTEM's CATALOG “Ordnance Product Drawings & Data
Sheets ").

FIG. 10 is a cross-sectional view showing a structure for fixing the end of a metal-coated detonation wire, which is a type of linear pyrotechnic. That is, in FIG. 10, reference numeral 101 is a connector, and this connector 101
Has a rotary operation part 101a and a male screw part 101b, and has a through hole 101c formed therein. Also,
Reference numeral 102 is a tube support, inside of which,
Metal-coated detonation wire, which is a linear pyrotechnic, inside the metal tube 103a
One end of the metal-coated hermetic detonation wire 103 accommodating 104 is fixed by caulking all around. The tube support 102 has a connector fitting portion 102a that fits into the through hole 101c of the connector 101, and a substantially cylindrical flange portion 102b that abuts the end of the male screw portion 101b. Furthermore, the code 10
Reference numeral 5 is a substantially tubular linear pyrotechnic holder, in which the detonation booster agent 106 is pressed into the inside on one end side thereof, and the metal coating is applied to the inside from the other end side to the vicinity of the center. The end portion of the detonation wire 104 is fitted with its end surface in close contact with the detonating booster agent 106, and at this time, the metal-coated detonation wire 104 is explosive
Male thread 104c formed on metal sheath 104b covering 104a
Is formed on the inner surface of the linear pyrotechnic holder 105.
It is fixed by screwing into. The linear pyrotechnic holder 105 has the outer peripheral portion on the other end side into which the metal-coated detonation wire 104 is fitted fitted and fixed in the metal tube 103a. Furthermore, reference numeral 108 is a booster cup having a substantially cylindrical shape with a bottom, and an output booster drug 107 is pressed on the bottom side thereof. And this booster cup 108
The output booster drug 106 is fitted into the linear pyrotechnic product holder 105 such that the detonation booster drug 106 compressed in the linear pyrotechnic product 105 is in close contact, and the opening The portion is sealed and welded to the metal tube 103a. Also,
An annular seal member 109 is fitted between the booster cup 108 thus mounted and the flange portion 102b of the tube support 102 that fits the opening of the booster cup 108 from the outer peripheral side. . The output portion of the metal-coated sealed detonation wire 103 is connected to another pyrotechnic article such as an igniter via the O-ring 110 by the external thread portion 101b of the connector 101, and is ignited by an ignition means (not shown). The combustion of the metal-coated detonation wire 104 is converted into a detonation signal by the detonation booster agent 106 and the output booster agent 107.

(Problems to be solved by the invention) However, in the structure for fixing the end portion of the linear pyrotechnic applied to the output portion of the metal-coated hermetic detonation wire 103 as described above, Metal sheath 104b at the end of 104
Since the male screw portion 104c formed on the wire-shaped pyrotechnic holder 105 is screwed to the screw portion 105a because it is formed on the linear pyrotechnic holder 105, the metal sheath 104b of the metal-coated detonation wire 104 has a screw portion 104c. When the explosive 104a compressed in the metal sheath 104b is cracked when forming, the combustion of the explosive 104a may be hindered, and the thickness of the metal sheath 104b becomes thin, There is a problem that the metal-coated detonation wire 104 may be cut.

Further, when screwing the metal-coated detonation wire 104 to the wire-like pyrotechnic holder 105, since a tool such as a wrench cannot be used at all, its assembly workability is very poor. Had.

(Purpose of the Invention) The present invention has been made in view of the above problems, and in the fixed end portion of the linear pyrotechnic, interruption of combustion of explosive and cutting of the linear pyrotechnic is performed. It is an object of the present invention to provide an end fixing structure for a linear pyrotechnic which can be prevented and can improve the workability of assembling when fixing the end.

[Structure of the Invention] (Means for Solving Problems) In this invention, the end of the linear pyrotechnic product is fixed to the linear pyrotechnic product holder, and the linear pyrotechnic product holder and the booster drug are attached. In a structure for fixing an end portion of a linear pyrotechnic product, in which the linear pyrotechnic product and the booster drug are brought into close contact with each other, by combining with a booster cup that has been pressed, a portion of the linear pyrotechnic product near the end portion and the linear Each of the pyrotechnic holders is provided with a fitting locking portion for mutual locking, and the end of the linear pyrotechnic is fixed to the linear pyrotechnic holder via the fitting locking portion. Is characterized by.

(Example) Hereinafter, this invention is demonstrated based on drawing.

FIGS. 1 to 7 show an embodiment of the present invention. In this embodiment, the end fixing structure of the linear pyrotechnic product according to the present invention is provided with a metal-clad detonating wire in a metal tube. The figure shows the case where it is applied to the output part of the housed metal-coated sealed detonating wire.

That is, reference numeral 1 in FIG. 1 is a connector, and this connector 1 has a nut-shaped rotating operation portion 1a and a male screw portion 1b, and a through hole 1c is formed on the axial line in the inside thereof. There is. Reference numeral 2 is a tube support in which one end of the metal-coated hermetic detonation wire 3 is inserted without a gap, and has a flange 2a at one end thereof. And
This tube support 2 is caulked at a ridge zone portion (not shown) formed over the entire circumference of the substantially central portion thereof so as to protrude toward the inside of the metal-coated sealed detonating wire 3 to form a small ridge zone 2b shown in FIG. The tube support 2 is fixed to the metal-coated hermetic detonation wire 3 by forming the shape, and further, the tube support 2 has the small ridge 2b formed by performing the caulking as described above in the through hole 1c of the connector 1. The flange 2a is pressed against the inner surface and the flange 2a is attached to the male thread of the connector 1.
By being brought into contact with the end surface of 1b, it is fitted and fixed in the through hole 1c.

The metal-coated sealed detonation wire 3 is a metal tube 3a made of stainless steel, and the metal-coated detonation wire 4 as a linear pyrotechnic product is accommodated with a sufficient margin. And
The metal-coated detonation wire 4 is shown in FIGS. 2 and 4 (a),
As shown in (b), the explosive 4a is covered with a first sheath 4b made of a non-ferrous metal such as silver or aluminum. Further, the metal-coated detonation wire 4 has an end portion
A second sheath 4d made of a synthetic resin having flexibility is covered except for 4c, and the outer peripheral portion of the end portion of the second sheath 4d is provided with a mutual support for the linear pyrotechnic holder 5. Two protrusions 4e, 4e that function as part of the mating lock
Are integrally formed at symmetrical positions.

The end portion 4c of the metal-clad detonation wire 4 having the above-mentioned structure is, as shown in FIG.
It is positioned on the central axis by inserting it into the substantially tubular linear pyrotechnic holder 5 having one end side fitted in the metal tube 3a. One end of 5 corresponds to the protrusions 4e, 4e provided on the second sheath 4d of the metal-coated detonation wire 4, and is a part of the interfitting engagement portion for the metal-coated detonation wire 4. Functional locking grooves 6 and 6 are provided, and the projections 4e and 4e are engaged with the locking grooves 6 and 6, so that the metal-coated detonating wire 4 is suitable for the linear pyrotechnic holder 5. It is in a fixed state.

More specifically, the locking groove 6 is formed by the engagement groove 6 shown in FIG.
As shown in (b), the insertion groove 6a, the rotation groove 6b, and the locking hole 6c
And has a substantially hook shape. In this embodiment, the turning range of the turning groove 6b is about 90 °. When engaging and fixing the protrusion 4e provided on the metal-coated detonation wire 4 in the locking groove 6 formed in the linear pyrotechnic holder 5, first, as shown in FIG. Pull out the end 4c of the metal-clad detonation wire 4 from the metal tube 3a, and project the end 4c.
The end 4c is inserted into the linear pyrotechnic holder 5 such that the insertion grooves 6a and 6a of the linear pyrotechnic holder 5 are aligned with each other. Then, as shown in FIG. 6, the metal-coated detonation wire 4 or the wire pyrotechnic holder 5 is rotated by about 90 °,
As shown in the figure, the protrusions 4e, 4e of the metal-clad detonation wire 4 are formed on the linear pyrotechnic holder 5 by the rotation groove 6 of the locking grooves 6, 6.
After passing through b and 6b, they are engaged with the locking holes 6c and 6c. In other words, the projection 4e and the locking hole 6c can be engaged with each other by slightly rotating the metal-coated detonation wire 4 or the linear pyrotechnic holder 5. Furthermore, in this case, the groove width of the rotation groove 6b is set to be slightly smaller than the axial length of the protrusion 4e so that the protrusion 4e does not easily come off from the locking hole 6c after the engagement. be able to.

On the other hand, as shown in FIG. 1, a booster cup 7 made of metal is fitted to the other end of the linear pyrotechnic holder 5 to which the end of the metal-coated detonation wire 4 is fixed as described above. I am doing it.
The booster cup 7 has a substantially cylindrical shape with a bottom, and a booster drug 8 for output is pressed on the bottom side thereof, and further on the upper side (right side in FIG. 1) thereof. Is inserted in a booster drug holder 9 in which one end side of the booster drug 8 for detonation is pressed so that the booster drug 8 for detonation and the booster drug 8 for output are in close contact with each other.
The other end of the booster medicine holder 9 is fitted with the other end 5a of the linear pyrotechnic holder 5, and the metal-coated detonating wire fixed to the linear pyrotechnic holder 5 is attached. End face 4f
And the booster drug 8 for detonation in the booster drug holder 9
And are in close contact. The booster cup 7 is fixed by sealingly welding the flange portion 7a provided at the opening to the opening peripheral portion of the metal tube 3a of the metal-coated hermetic detonation wire 3. A substantially cylindrical sealing member 10 made of rubber or synthetic resin is fitted between the booster cup 7 thus mounted and the flange 2a of the tube support 2.

In addition, reference numeral 5b in FIG. 1 is a stopper provided in a substantially central portion of the linear pyrotechnic holder 5, and is in contact with a tapered surface formed on the peripheral edge of the opening of the metal tube 3a,
The linear pyrotechnic holder 5 is positioned. Further, reference numeral 11 is an O-ring.

The output part of the metal-coated hermetic detonation wire 3 having the above-mentioned configuration is
It is connected to other pyrotechnics such as an igniter by the external thread 1b of the connector 1. And the metal-coated sealed detonator 3
The combustion of the metal-clad detonator wire 4 ignited by an ignition means (not shown) provided at the other end of the is transmitted to the output side, and the booster chemicals 8 for detonation and output of the output section are sequentially burned to detonate. It is converted into a signal and the pyrotechnic product connected to the output is operated.

FIG. 8 and FIG. 9 show another embodiment of the present invention. In this embodiment as well, as in the previous embodiment, the end fixing structure of the linear pyrotechnic according to the present invention is made of metal. It shows the case where it is applied to the output part of the covered sealed detonating wire.

That is, in this embodiment, the locking groove 6, formed in the linear pyrotechnic holder 5, is formed at the end portion of the second sheath 4d made of a flexible synthetic resin that constitutes the metal-coated detonation wire 4. The metal tube 14 provided with the projections 14e, 14e corresponding to 6 is fitted and caulked and fixed, and the projections 14e, 14e of the metal tube 14 are engaged with the locking groove 6, 6 of the linear pyrotechnic holder 5. By engaging with 6, the metal-clad detonation wire 4 is fixed to the linear pyrotechnic holder 5.
The other parts have the same configuration as the previous embodiment.

In each of the above-mentioned two embodiments, the case where the end fixing structure of the linear pyrotechnic according to the present invention is used for the output part of the metal-coated sealed detonating wire is shown, but the present invention is not limited to this. And the detonator input and the delay line input and /
Alternatively, it can be applied to an output unit or the like.

[Effects of the Invention] As described above, according to the present invention, the end portion of the linear pyrotechnic product is fixed to the linear pyrotechnic product holder, and the linear pyrotechnic product holder and the booster drug are pressed. In the structure for fixing the end portion of the linear pyrotechnic product, which joins the filled booster cup and brings the linear pyrotechnic product and the booster drug into close contact with each other, A structure in which a fitting locking portion for mutual locking is provided in each of the workpiece holders, and the end portion of the linear pyrotechnic product is fixed to the linear pyrotechnic holder via the fitting locking portion. Therefore, it is possible to prevent the combustion of explosive at the end of the linear pyrotechnic product and the cutting of the linear pyrotechnic product, and to greatly improve the workability of assembling the end of the linear pyrotechnic product. It has an excellent effect that it can be made.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of an output part of a metal-coated hermetic detonation wire according to an embodiment to which an end fixing structure of a linear pyrotechnic according to the present invention is applied, and FIG. 2 is AA in FIG. 3A and 3B are sectional views, a front view and a front view, respectively, showing the structure of the linear pyrotechnic holder used for the output part of the metal-clad sealed detonating wire in FIG. (A) And (b) is a front view and a sectional view, respectively, showing an end structure of the metal-coated detonation wire housed in the metal-coated hermetic detonation wire in FIG. 1, and FIGS. Fig. 3 (a), (b) and Fig. 4 (a), (b) are perspective operation explanatory views sequentially showing the procedure for fixing the linear pyrotechnic holder and the metal-coated detonating wire, and Fig. 8 is FIG. 9 is a sectional view showing the structure of the output portion of the metal-clad sealed detonation wire according to another embodiment of the present invention, and FIG. Perspective view showing separates the pyrotechnic holder and metallization detonating cords, FIG. 10 is a sectional view showing an output unit structure of a conventional metallization sealing detonating cord. 4 ... Metal-coated detonating wire (linear pyrotechnic), 4e, 14e ... Protrusion (fitting and locking part), 5 ... Linear pyrotechnic holder, 6 ... Locking groove (fitting member) Tobe), 7 ... Booster cup, 8 ... Booster drug.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Nozaki 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Takemasa Takeshi 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Takayoshi Fuji 2nd Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Kenji Ito 1-6, Teneoshioya-cho, Kure, Hiroshima Prefecture Chugoku Kayaku Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An end of a linear pyrotechnic product is fixed to a linear pyrotechnic product holder, and the linear pyrotechnic product holder and a booster cup filled with a booster drug are combined to form the linear pyrotechnic product. In a structure for fixing an end portion of a linear pyrotechnic product in which a pyrotechnic product and a booster drug are brought into close contact with each other, a fitting for interlocking is provided between an end portion of the linear pyrotechnic product and the linear pyrotechnic holder, respectively. An end fixing structure for a linear pyrotechnic product, characterized in that a mating engagement portion is provided, and the end of the linear pyrotechnic product is fixed to the linear pyrotechnic product holder via the fitting engagement portion. .