JPS6011067Y2 - igniter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ignition device that causes combustion and decomposition of exothermic agents, smoke generating agents, gas generating agents, etc.

Conventionally, fume generating agents such as smoke generators used to generate fumes such as smoke begin to burn or decompose when heated with an exothermic agent, and a igniter has been used to ignite the exothermic agent. .

Conventionally, as a igniter that ignites when energized, a igniter using an ignition ball, a cross-sectional view of which is shown in FIG. 1, has been widely used.

FIG. 1 is a sectional view showing an example of a conventional smoke generating device. A smoke generating device container 1 is filled with a smoke generating agent 2, and in the center thereof there is a ceramic container 4 containing a heat generating agent 3. Above there is a heating resistance wire 5 and an ignition powder 6 attached around it.

Two conductive wires 8 coming out from both ends of the heating resistance wire 5 pass through a holder 9 made of electrically insulating resin, pass through a hole in the lid 7, and come out of the smoke container 1.

10 is a smoke outlet.

To explain the operating principle of the smoke generator shown in FIG. 1, by bringing the positive and negative poles of a dry battery into contact with the ends of the conducting wire 8, the heating resistance wire 5 generates heat, and then the igniter 6 around it ignites. As a result, the exothermic agent 3 causes a chemical reaction and generates heat, and the ceramic container 4 is heated by this heat generation.

Due to this rise in temperature of the ceramic container 4, the smoke generating agent 2 in contact with the outer surface of the ceramic container 4 decomposes or burns, and the generated smoke is ejected through the ejection port 10.

However, this conventional igniter is not suitable for mass production during assembly, and also has the disadvantage that the conductive wire is difficult to come into contact with the battery.

The present invention eliminates these drawbacks and at the same time provides an ignition device that is highly reliable and easy to operate.

That is, the present invention places an electrically insulating synthetic resin disc on the concentric stepped surface of a holder that has a stepped cylindrical inner wall and is made of an electrically insulating material. A protruding terminal is provided to connect with the conducting wire passing through, and an eyelet is provided on the large diameter cylindrical inner wall of the stepped cylindrical inner wall, and the eyelet passes through the side of the electrically insulating synthetic resin disc or penetrates inside it. The ends of the two conductors are located in the small diameter cylinder of the stepped cylindrical inner wall and are in the open glass tube at the front supporting the heating resistance wire, The ignition device is characterized by filling the area around the heating resistance wire with ignition powder.

That is, the inner wall of the holder made of an electrically insulating material has a stepped cylindrical shape consisting of a large diameter cylinder and a small diameter cylinder, and the large diameter cylindrical inner wall surface is made of an electrically conductive material with an eyelet. gender.

The conductors coming out of the eyelets and protruding terminals each lead to the opposite side of the electrically insulating synthetic resin disk, but if you use an electrically insulating solid material, such as a glass bead, to prevent short circuits between the conductors while connecting them with the heat-generating resistance wire. good.

Further, one end of the glass tube is welded to a glass ball, and the other end of the glass tube is opened, so that the heating resistance wire is located within the space.

In other words, the structure is the same as that of a microbulb with an open glass tube end.

The eyelet and the protruding terminal form a cup-shaped space, and when a dry battery that matches the dimensions of the igniter's space with the side cover removed is inserted, the positive electrode will come into contact with the protruding terminal in the center. The negative pole contacts the eyelet and current flows through each conductor to the heating resistance wire.

The conductive material used for the eyelets is preferably a metal with good electrical conductivity, such as copper or brass.

The material for the electrically insulating synthetic resin disk mounted on the stepped surface may be, for example, Bakelite, epoxy resin, or the like used for printed wiring.

For example, solder is used as the material for the protruding terminals.

In addition, heat generating resistance wires include nichrome wire, tungsten wire,
Platinum-iridium wire, etc. can be used, but since dry batteries with low electromotive force are used as the power source, the diameter is 0.05 m77+
It is preferable that the

Furthermore, the ignition powder is a mixture of barium chromate and boron,
Fill a glass tube with a wet mixture of various mixtures, such as a mixture of copper oxide and aluminum, and a binder made by dissolving cotton powder in a solvent such as acetone or isoamyl acetate, and dry. Solidification is preferred.

In addition, the open surface of the glass tube is coated with a synthetic resin film to prevent shock and
It may also increase the strength against vibrations, etc.

Next, the present invention will be explained in more detail with reference to embodiments.

FIG. 2 is a sectional view showing a state in which an ignition device according to an embodiment of the present invention is attached to a smoke generating device.

A holder 11 made of an electrically insulating material that is wide at the bottom and narrow at the top in cross section is fitted into the ceramic container 4,
It is fixed to the lid 12 of a smoke generator container (not shown).

M12 has a spout 10. An electrically insulating synthetic resin disc 14 is placed on the concentric solid stepped surface of the inner wall of the holder 11, and a protruding terminal 18 made of solder is provided on the upper surface of the electrically insulating synthetic resin disc 14.

A conductive wire 16 is connected to the protruding terminal 18, and this conductive wire 16 passes through the electrically insulating synthetic resin disk 14.

Further, an eyelet 13 is hot press-fitted from the large diameter cylindrical inner wall of the holder 11 to the surface of the electrically insulating synthetic resin disk 14, and a conductive wire 15 is connected to the eyelet 13.

The conducting wire 15 is provided so as to pass through the side or inside of the synthetic resin disk 14.

A heating resistance wire 5 is connected to the ends of the conducting wire 15 and the conducting wire 16.

Further, the conductive wire 15 and the conductive wire 16 are solidified with a glass bead 19 that spans them in the middle.

The glass beads 19 and the glass tube 17 with one end open are welded together using a flame from a burner or the like.

A heating resistance wire 5 is placed in the center of the space, and an ignition charge 6 is filled around the heating resistance wire 5.

Figure 3 shows a dry battery 2 used as a power source for the ignition device of the present invention.
0, 21 is a positive pole, and 22 is a negative pole with the coating removed.

Note that commercially available dry batteries that can be used in the ignition device of the present invention include AAA or AAA batteries.

Next, the method of operating the ignition device of the embodiment will be explained.
When the dry battery 20 shown in FIG. 3 is inserted into the space surrounded by the eyelet 13 of the holder 11, the positive electrode 20 of the dry battery 20
, protruding terminal 18 , conducting wire 16 , heating resistance wire 5 , conducting wire 15
, the eyelet 13 and the negative pole 22 of the dry battery 20 constitute an electric circuit, and the heat-generating resistance wire 5 generates heat, ignites the ignition charge 6 in the glass tube 17, and causes the exothermic agent 3 to burn and generate heat.

This combustion heats the ceramic container 4 and burns or decomposes the smoke generating agent and the like that come into contact with it.

In addition to the exothermic agents shown above, the ignition device of the present invention can be used as an ignition device for gas generating agents such as mixtures of metal azides and metal oxides, oxygen generating agents whose main component is chlorate, etc. .

When the igniter of the present invention comes into contact with or comes close to an object to be burned or decomposed, such as a heat-generating agent, a smoke-generating agent, or a gas-generating agent, the thermal energy generated from the igniter concentrates in one direction.
Very reliable ignition.

Furthermore, since the heat-generating resistance wire is protected by a glass tube and then assembled into the holder, there is no chance of the wire being exposed directly to the heat-generating resistance wire or coming into contact with the holder, so there are almost no defective products.

Although it looks complicated in structure, it is easy to automate and suitable for mass production by using manufacturing equipment for ultra-small light bulbs.

Furthermore, since it operates simply by inserting a dry battery, it is easy to handle, and is particularly suitable as an ignition device for objects used by an unspecified number of people, such as smoke generators.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an example of a conventional smoke generating device, Fig. 2 is a cross-sectional view showing an ignition device according to an embodiment of the present invention attached to the smoke generating device, and Fig. 3 is a sectional view of the ignition device of the present invention. FIG. 2 is an elevational view of a dry battery used as a power source. 1...Fume generator container, 2...Fume generator,
3... exothermic agent, 4... ceramic container, 5... exothermic resistance wire, 6... ignition powder,
7, 12... Lid, 8, 15° 16...
Conductor, 9... Holter 110... Spout, 11... Holder, 13... Eyelet,
14... Electrically insulating synthetic resin disc, 17...
...Glass tube, 18 protruding terminal, 19...Glass ball, 20...Dry battery, 21...Positive pole, 22...Negative pole.

Claims (1)

[Scope of utility model registration request] An electrically insulating synthetic resin disk is placed on a concentric cross section of a holder that has a stepped cylindrical inner wall and is made of an electrically insulating material.The electrically insulating synthetic resin disk is placed on the upper surface of the electrically insulating synthetic resin disk. A protruding terminal made of a conductive material is provided to be connected to a conductive wire passing through the resin disk, and an eyelet is provided on the large diameter cylindrical inner wall of the stepped cylindrical inner wall, and the eyelet is attached to the electrically insulating synthetic resin circle. Connecting to other conductors passing through the sides of the plate or penetrating the interior thereof, the tips of said two conductors being located within the small diameter cylinder of said stepped cylindrical inner wall and within the open glass tube at the front. What is claimed is: 1. An ignition device comprising: supporting a heat-generating resistance wire; and filling the periphery of the heat-generating resistance wire with ignition powder.