Combustion – Electrical or mechanical igniter correlated with burner feed – Having electric current producer
Patent
1992-09-03
1994-07-05
Jones:, Larry
Combustion
Electrical or mechanical igniter correlated with burner feed
Having electric current producer
431258, 431266, F23Q 712
Patent
active
053262565
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an igniting device which injects flame from a nozzle by igniting fuel gas discharged from a built-in gas reservoir.
BACKGROUND OF THE INVENTION
In an igniting device such as an igniting rod or a table gas lighter, flame is injected from a tip of a rod-like portion which projects from a valve mechanism which controls gas supply from a gas reservoir. A gas pipe for supplying fuel gas to a fuel nozzle on the tip of the rod-like portion and a wire for supplying a discharge voltage for producing spark extend from the body portion and respectively connected to the fuel nozzle and a discharge electrode on the tip of the rod-like portion.
The gas pipe is directly connected at an end to the valve mechanism in the body portion and is connected at the other end to the gas injection nozzle. The wire also extends from the piezoelectric unit to which it is connected at an end and connected to the discharge electrode.
In this type of the igniting device, it has been difficult to automate the process of assembling the device.
That is, said gas pipe and said wire are formed of soft material and accordingly are not easily handled to be connected at the ends thereof to other parts and to be mounted in the space extending from the body portion to the end of the extended pipe member. Even though the valve mechanism is made into a unit form to facilitate the automatic assembling process, the above-mentioned structure of the igniting device including the gas pipe and the wire has been a bar to the automation of the final assembling process.
In view of the foregoing observations and description, the primary object of the present invention is to provide an igniting device in which the automation of the assembling process is facilitated and the manufacturing cost is lowered.
DISCLOSURE OF THE INVENTION
In accordance with the present invention, there is provided an igniting device wherein a gas reservoir, a valve mechanism and a piezoelectric unit are incorporated into a body portion assembly, a rod portion is formed by connecting a hard gas pipe to a gas injection nozzle provided in a tip of a rod-like metal tubular member and electrically connecting the gas injection nozzle on one end of the gas pipe and a terminal member on the other end of the same by way of a wire which extends through the gas pipe, and the body portion assembly and the rod portion are assembled into a unit by engaging the base portion of the rod portion with an engagement portion of the body portion assembly, thereby connecting the gas pipe in the rod portion to the valve mechanism in the body portion assembly and electrically connecting the metal tubular member in the rod portion to the piezoelectric unit in the body portion assembly.
In such an igniting device, final assembly can be conducted by simply engaging the base portion of the rod portion with an engagement portion of the body portion assembly since the body portion assembly and the rod portion assembly are formed separately from each other and the wire is disposed in the hard gas pipe. In response to the final assembly, the gas pipe in the rod portion is connected to the valve mechanism in the body portion assembly so that fuel gas from the valve mechanism can be led to the gas injection nozzle on the tip of the rod portion through the gas pipe and the metal tubular member in the rod portion is electrically connected to the piezoelectric unit in the body portion assembly so that spark for igniting fuel gas discharged from the nozzle can be produced by discharge voltage imparted to the nozzle through the metal tubular member and the wire, whereby assembly of the igniting device is facilitated to make feasible automation of assembly and the manufacturing cost is lowered .
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view of an igniting device in accordance with an embodiment of the present invention in the assembled state,
FIG. 2 is a cross-sectional view of the body portion assembly, and
FIG. 3 is a cross-sectional view showi
REFERENCES:
patent: 4610624 (1986-09-01), Bruhn
patent: 4778380 (1988-10-01), Nitta
patent: 5154601 (1992-10-01), Capilla
Eguchi Toshihiko
Saito Masaki
Shike Tsutomu
Jones: Larry
Tokai Corporation
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