JPS613925A - Ignition device for liquid fuel burner - Google Patents

Abstract

PURPOSE:To attach or detach the main body of the ignition device simply and easily without employing any tool by a method wherein the engaging part of a clip if engaged with or removed from recessed grooves on both sides of the main body by the elastic deformation of the clip. CONSTITUTION:The slip-out preventing parts 7c of the clip 7 are inserted into the slip-out preventing holes 9 of the upper flange 5 of a wick outer tube 4 under a condition that a size D between one pair of engaging section 7a is slightly contracted by gripping the engaging section 7a of grip 7 by hand slightly and the clip 7 is postured uprightly as shown by imaginally lines in the diagram. Next, the main body 3 is inserted the flange to about the protruded section 3a thereof against the outer periphery of the mounting hole. Subsequently, the golding parts of the grip is held to turn the grip 7 upwardly, then, the engaging section 7a of the grip 7 is abutted against the lower side rim 3c of the main body 3 at first, the size D between the engaging section 7a is enlarged gradually and the grip 7 is engaged with the recessed grooves 8 finally whereby the upper rims of the engaging section 7a are abutted against the lower surface of the upper flange 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an ignition device for a liquid fuel combustor such as a top-and-bottom kerosene stove.

<Prior art> As shown in Fig. 6, the heating device of a conventional kerosene stove with a top-and-bottom wick is made of a heat-resistant insulating material (ceramics) in which a pair of electrodes 2 having a platinum ignition heater 1 made of platinum Hilament built in is built into the upper part.
The ignition device main body 3 is attached to the upper flange 5 of the core outer cylinder 4. The lower part of the electrode 2 is passed through the lower side of the upper flange 5, and vertical holes 3b are bored in the protrusions 3a on both left and right sides of the main body 3. By tightening the lower part of the screw 6 to the lower hole (6a) of the upper flange 5,
The ignition device was fixed to the upper flange 5. However, the diameter of this screw 6 is 1~b.Even if you try to remove this screw for repair, most households do not have engineers who can use the smallest screws.

<Purpose> Therefore, an object of the present invention is to provide an ignition device that can be attached and detached by an extremely simple and easy operation without using any tools on a production line or at home.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. First, the first embodiment shown in FIGS. 1 to 4 will be described. In this case, an igniter made of a heat-resistant insulating material (e.g., ceramics) has a built-in pair of electrodes 2 having an igniter 1 made of platinum Hirament on the upper part. The main body 3 is passed through the mounting hole 6 of the upper seven runs 75 of the outer core cylinder 4, and the lower surfaces of the protrusions 3a on both sides of the main body 3 are in contact with the upper surface of the outer peripheral part of the mounting hole 6, and The upper end of an engaging part 7a of a clip 7 made of spring wire or stainless steel is brought into contact with the lower surface of the outer periphery of the body 6, and the engaging part 7a engages and disengages from the grooves 8 on both sides of the main body 3 due to its elastic deformation. freely engaged.

The clip 7 has a U-shape consisting of a pair of engaging parts 7a and a gripping part 7b formed to connect them, and the tip of the engaging part 7a is bent at a right angle to form a retaining part 7.
c. Further, a pair of retaining holes 9 are formed in the upper flange 5 of the outer core cylinder 4, and both side edges 3c of the lower part of the main body 3 are formed into a tapered part (or a circular arc part) that widens upward. The lower end of the electrode 2 is connected by a lead wire 10 to an ignition switch 11 and a dry battery 12. A heater 13 is fitted and bonded to the upper end of the main body 3.

In addition, in FIG. 3, C is a core that moves up and down inside the outer core tube 4, 14 is an inner core tube that guides the inside thereof, and 15 is an inner core tube 1.
A lover 16 is a burner cylinder which closes the upper part of the lover 4, and an inner flame cylinder 16a placed on the outer periphery of the lover 15, and a core outer cylinder 4.
It consists of an outer flame tube 16b placed on the upper flange 5 and its cover (not shown).

Next, to explain how to assemble the ignition device, first, by slightly squeezing the engaging portions 7a of the clip 7 with your hands, the distance between the pair of engaging portions 7a is slightly reduced. Insert the retaining part 7C into the retaining hole 9 of the upper flange 5 of the outer core cylinder 4,
- Place the clip 7 in a vertical position as indicated by the imaginary line in FIG. When'clip'? b. When the hand is released, the dimension between the engaging portions 7a returns to the original dimension due to elasticity. Next, insert the main body 3 into the mounting hole 6 of the upper flange 5 from above, and
a is brought into contact with the upper surface of the outer periphery of the mounting hole 6. Next, when holding the grip part 7b of the clip 7 and rotating the clip 7 upward, the engaging part 7a of the clip 7 first hits the lower edge 3c of the main body 3, and the dimension between the engaging parts 78 is gradually enlarged. , finally engages with the concave groove portion 81, and the upper edge of the engaging portion 7a abuts the lower surface of the upper flange 5. In this engaged state, the engaging portion 7F
The dimension between i is slightly wider than in the free state. and,
When the lead wire 10 is connected to the electrode 2, the assembly is completed.

Furthermore, when removing the main body 3 from the upper flange 5 of the outer tube 4, the operation is performed in the reverse order to the above.

In the above, if the clip 7 has the retaining part 7C, the clip 7 can be easily engaged and detached and the clip 7 can be prevented from being lost. However, in the present invention, the elastic deformation of the clip 7 without the retaining part 7c The engaging portion 7a may be configured to be engaged with and disengaged from the groove portion 8 of the main body 3 using the above.

In the above-mentioned ignition device, when the ignition switch 11 is turned on, the ignition heater 1 becomes incandescent, the petroleum vapor evaporating from the wick C is ignited, and the wick C is ignited.

Next, a second embodiment of the present invention will be described with reference to FIG. 5. In this, the retaining portion 7C of the clip 7 is bent toward the center of the outer tube 4 with respect to the engaging portion 7a, and The retaining hole 9 of No. 4 is a circular hole, and in this embodiment, the retaining function is lower than that of the first embodiment, but the locking and disengaging function of the clip 7 is almost unchanged.

In the above embodiment, the protrusions 3a on both sides of the main body 3 are brought into contact with the upper surface of the outer periphery of the mounting hole 6 of the upper flange 5, and the engaging portion 7a of the clip 7 is brought into contact with the lower surface of the outer periphery of the mounting hole 6. However, in the present invention, conversely, the protrusions on both sides of the main body are brought into contact with the lower surface of the outer periphery of the mounting hole of the upper flange, and the engaging portion of the clip is brought into contact with the upper surface of the outer periphery of the mounting hole. It may be configured so that it is in contact with the

Further, the present invention is not limited to the configuration of the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

<Effects> As is clear from the above description, the present invention provides an igniter body made of a heat-resistant insulating material in which a pair of electrodes having an ignition heater in the upper part is built into the mounting hole formed in the upper seven runs of the outer core cylinder. The projecting portions on both sides of the main body are brought into contact with the upper or lower surface of the outer periphery of the mounting hole, and the engaging portion of the clip is brought into contact with the lower or upper surface of the outer periphery of the mounting hole. Due to its elastic deformation, the portion is removably engaged with the concave groove portions l on both sides of the main body.

Therefore, according to the present invention, by elastically deforming the engaging portion of the clip to engage and disengage it from the concave grooves on both sides of the main body, the main body of the ignition device can be easily and easily installed in production, on the production line, and at home without using any tools. It has an excellent effect of being able to be adjusted by putting it on and taking it off.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the first embodiment of the ignition device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a longitudinal side view, Fig. 4 is a front view, and the fifth (support) is a main An exploded perspective view of the second embodiment of the invention, FIG.
゜1: Heater, 2: Electrode, 3: Ignition device body, 3a: Projections on both sides, 4: Core outer cylinder, 5: Upper flange, 6: Mounting hole, 7
: Clip, 7a: Engagement part, 8: Both side groove parts.

Claims (1)

[Claims] An ignition device main body made of a heat-resistant insulating material, which has a built-in pair of electrodes with an ignition heater on its upper part, is passed through a mounting hole formed in the upper flange of the core outer cylinder, and the main body is attached to the upper or lower surface of the outer circumference of the mounting hole. protrusions on both sides of the clip are in contact with each other, and an engaging part of the clip is in contact with the lower or upper surface of the outer periphery of the mounting hole,
An ignition device for a liquid fuel combustor, characterized in that the engaging portion is removably engaged with the groove portions on both sides of the main body by elastic deformation.