JPH1089685A - Piezoelectric gas lighter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leakage of fuel gas and ignition failure at operation due to dimensional error of component parts of fuel supply means screwed on a lighter body and assembly error. SOLUTION: A distance of a support point member of a gas lever 30 from the freely fitted part of the support member freely fitted to a nozzle 11 of fuel supply means 12 screwed on a lighter body 3 at one end of an arm part is made larger than a distance between the support member and an abutment part of the gas lever 30 which abuts a lever press 24 of a piezoelectric unit 21 for opening and closing a gas passage, and the tip end side of the abutment part of the gas lever 30 is sharpened and hence is bent when it abuts the lever press 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric gas lighter that discharges at the time of fuel ejection when a pressing operation is performed for ignition and prevents fuel leakage.

[0002]

2. Description of the Related Art Generally, a disposable piezoelectric gas lighter emits fuel gas from a nozzle provided in a fuel supply means and ignites and burns it by an ignition device. As the ignition operation, by pushing down a piezoelectric unit disposed on an operation member that moves in the vertical direction with respect to the lighter main body, a valve mechanism in the fuel supply means is operated to open a fuel gas passage to discharge gas. It is ignited by discharge sparks generated by the piezoelectric unit while being ejected.

[0003] As means for opening and closing the fuel gas passage, one end of an arm portion is inserted near the tip of the nozzle and a substantially central portion of an L-shaped gas lever which is loosely fitted is pivotally supported, and the other end is provided on a piezoelectric unit. The shaft is pivoted on the shaft by supporting the shaft against the push.

[0004]

The gas lever is made to have sufficient rigidity to apply a force for lifting the nozzle. When the piezoelectric unit is pushed down, the gas lever is provided with the lever. No deformation occurs in the part. Further, the fuel supply device is constituted by assembling a plurality of small parts, and the supply device is screwed into a thread groove provided in the lighter body.

[0005] Due to these factors, when the fuel supply means is set to be screwed below the predetermined position on the lighter body, the arm of the gas lever loosely fitted to the nozzle tilts obliquely downward. On the contrary, the abutting portion is lifted upward and pressed against the piezoelectric unit, and swings around the fulcrum in the substantially central portion due to the rigidity of the gas lever to slightly lift the nozzle, and the fuel gas passage is slightly opened to constantly open the fuel gas passage. There is a problem that gas is leaked little by little.

On the other hand, when the gas lever is set in a state of being screwed above a predetermined position, the arm of the gas lever is inclined obliquely upward, and the attached portion is directed vertically so as to be separated from the piezoelectric unit. At this time, the nozzle is slightly lifted, but does not reach such a force as to open the valve arranged in the fuel gas passage. However, when the operating member is pressed down for ignition, the contact point between the abutting portion and the lever pushes down, the timing for lifting the nozzle is delayed, and a discharge spark is generated and fuel cannot be ignited while fuel gas is not ejected from the nozzle. There's a problem.

In view of such circumstances, the present invention increases the amount of loose fitting movement between the nozzle and the gas lever so that gas leakage does not occur due to dimensional errors of components and errors during assembly, and it is ensured during operation. It is intended to provide a gas lighter that can be ignited.

[0008]

SUMMARY OF THE INVENTION To solve the above problems, the present invention provides a lighter body having a fuel tank for storing fuel, and an upper part of the lighter body for supplying fuel while controlling the flow rate from the fuel tank. A fuel supply means, a gas lever for loosely fitting to a nozzle provided in the fuel supply means and sealing the opening and closing of a fuel passage, and operating a piezoelectric unit on fuel ejected from the nozzle of the fuel supply means. An ignition device for igniting, wherein the abutting portion of the gas lever provided on the ignition device and the abutting portion of the gas lever provided on the ignition device are made thinner toward the distal end so as to be formed by the lever pushing.

[0009]

According to the present invention, the contact portion of the gas lever which comes into contact with the lever push is made thinner toward the distal end so that the lever is pushed by the lever at the time of the ignition operation. It is possible to eliminate fuel gas leakage due to upward position fluctuation and fuel gas ejection delay due to downward position fluctuation due to assembling the fuel supply means to the lighter body, improve ignition, and reduce dimensional errors and assembly time. Can be eliminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A piezoelectric gas lighter 1 according to the present invention shown in FIGS. 1 to 3 has a lighter body 3 having a fuel tank portion 2, a fuel supply means 12 having a nozzle 11 for ejecting fuel gas, and An operation cap 22 covers the piezoelectric unit 21 for generating a discharge spark and operates the fuel supply unit 12.

The lighter main body 3 is formed of a synthetic resin into a rectangular shape, and has a fuel tank portion 2 for storing a fuel gas such as butane gas therein, and an intermediate case 4 fitted on an upper portion thereof. A thread groove 5 is screwed into one upper portion of the lighter main body 3, and fuel supply means 12 having a known valve mechanism for controlling the amount of fuel gas ejected from the fuel tank portion 2 is screwed into the thread groove 5. Is being worn. A nozzle 11 that connects to a valve mechanism inside the fuel supply means 12 and opens and closes a fuel gas passage protrudes upward from the intermediate case 4. Also,
Below the fuel supply means 12, a suction core 6 penetrating through the intermediate case 4 and inserted into the fuel tank portion 2 is provided.

An operation cap 22 for covering the piezoelectric unit 21 is provided so as to face the fuel supply means 12 provided above the intermediate case 4. The piezoelectric unit 21 accumulates stress in a spring (not shown) while moving downward by a pressing operation from top to bottom, and instantaneously applies a force accumulated in the piezoelectric element via a hammer or the like when an appropriate accumulation force is reached. It has become. Polarization occurs in the piezoelectric element which receives this force. One is connected to a discharge terminal 23 attached to the upper inner surface of the operation cap 22, and the other is connected to a gas lever 30 described later from a lever pusher 24 provided in the middle of the case of the piezoelectric unit 21. Then, the fuel gas flows through the nozzle 11 to generate a discharge spark between the nozzle 11 and the discharge terminal 23 to ignite the fuel gas from the nozzle 11.

The gas lever 30 which plays the role of one electric circuit while sliding the nozzle 11 upward to open the fuel gas passage is formed in a substantially L-shape from a synthetic resin mixed with a conductive material.

The gas lever 30 shown in FIG. 2 comprises an arm portion 31 and a contact portion 32.
2 is formed with a hole 33 having a size through which the nozzle 11 penetrates and a notch 34 for inserting a nozzle. When the nozzle 11 is inserted into the hole 33, the nozzle 11 and the gas lever 30 are allowed to move freely. It will be in the fitted state. A fulcrum member 35 that is inserted into a not-shown groove formed in the intermediate case 4 protrudes from the side wall of the bent portion between the arm portion 31 and the contact portion 32, and swings around the fulcrum member 35 as a fulcrum. Can be.

When the gas lever 30 is installed on the intermediate case 4 via the fulcrum member 35, the distance between the fulcrum and the nozzle 11 becomes larger than the distance between the fulcrum and the piezoelectric unit 21, and the contact portion 32 becomes the tank. When the lever is pressed down by the lever pusher 24, the fulcrum member 3
The nozzle 11 swings around the center 5 and lifts the nozzle 11 loosely fitted to the arm 31. Further, since the contact surface of the contact portion 32 is formed so that the contact surface is flat and the lower surface becomes thinner toward the tip,
The tip of the contact portion 32 contacting the lever pusher 24 can be bent.

Reference numeral 7 denotes a rotatable adjusting ring for screwing the fuel supply means 12 to increase or decrease the amount of fuel gas to be ejected. Reference numeral 8 denotes a mixture of the fuel gas and air to discharge an ignited flame. It is a crater cap.

The operation of the piezoelectric gas lighter 1 having the above configuration will be described in detail.

When the gas lighter 1 is held in the storage state shown in FIG. 1 not used, the contact portion 32 of the gas lever 30 is located below the lever pusher 24 provided on the piezoelectric unit 21. Therefore, the nozzle 11 is not lifted and the fuel gas passage is not opened. At this time, if the fuel supply means 12 is lowered below a predetermined position when the fuel supply means 12 is screwed and assembled to the lighter main body 3, the distance between the nozzle loosely fitting portion of the gas lever 30 and the fulcrum is long, so that the nozzle 11, the bending angle of the contact portion 32 of the gas lever 30 is reduced, so that the tip of the contact portion 32 does not strongly contact the piezoelectric unit 21 and the hole 3
By increasing the amount of movement between the nozzle 3 and the nozzle 11 in the loosely fitted state, the nozzle 11 is not lifted due to the movement of the gas lever 30 and the fuel gas passage is not opened to cause gas leakage.

Conversely, when the fuel supply device 12 is screwed above a predetermined position, the conventional gas lever has a large downward inclination of the contact portion due to the upward inclination of the arm portion loosely fitted to the nozzle. Gas leakage does not occur, but the contact with the lever push is delayed during use. In contrast, in the present invention, the degree of inclination of the contact portion 32 is reduced, and the lever push by the operation cap 22 is pushed down. 24, the contact with the contact portion 32 is quick, and the gas lever 30
The fuel gas is ejected by the lifting of the nozzle 11 due to the swing of the nozzle, and the piezoelectric unit 21 is operated to ignite by the discharge spark.

When the operation cap 22 is pushed down to the lowest position, the tip of the contact portion 32 is bent by the lever push 24 as shown in FIG.

[Brief description of the drawings]

FIG. 1 is a sectional view of a piezoelectric gas lighter according to the present invention.

FIG. 2 is an enlarged perspective view of a gas lever.

FIG. 3 is a cross-sectional view of the gas lighter during an ignition operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Piezoelectric gas lighter 3 ... Lighter main body 11 ... Nozzle 12 ... Fuel supply means 21 ... Piezoelectric unit 24 ... Lever pushing 30 ... Gas lever 31 ... Arm part 32 ... Abutment part 35 ... Support point member

Claims (2)

[Claims] A lighter main body having a fuel tank for storing fuel; a fuel supply means disposed on an upper portion of the lighter main body for supplying fuel while controlling a flow rate from the fuel tank; A gas lever that loosely fits into the provided nozzle to assist in opening and closing the fuel passage, and an ignition device that operates a piezoelectric unit to ignite the fuel ejected from the nozzle of the fuel supply means, and is provided in the ignition device. A piezoelectric gas lighter characterized in that an abutting portion of the gas lever to be abutted when the lever is pushed is made thinner toward the distal end so as to be pressed by the lever. 2. The piezoelectric gas lighter according to claim 1, wherein a distance between a fulcrum for swing operation provided on the gas lever and the nozzle is larger than a distance between the lever push and the fulcrum.