JP4900856B2 - Gas writer - Google Patents

Description

  The present invention relates to a hand-held gas writer, and more particularly to a so-called safety gas writer including a mechanism that prevents a gas combustion flame from being generated when a person (for example, a child) easily manipulates an ignition operation element. The present invention can be implemented in a gas writer (pocket writer) that ignites cigarettes, cigars, and the like, and a gas writer (ignition tool) that ignites candlesticks, firewood, ignitable materials, and the like.

  There are various ignition operators for this type of gas writer. For example, when the ignition control is a case lid that covers the flint ignition mechanism or the electrode that ignites the fuel gas by the discharge spark, the gas release lever is first driven in the valve opening direction by a person opening the case lid. The gas release valve of the fuel tank opens and a flint spark or an electric spark (spark) ignites the gas. Also, when the ignition operation element is a push button or a slide button, when a person pushes down or slides the push button, the gas release lever is driven in the valve opening direction to open the gas release valve of the fuel tank, and An electric spark ignites gas (for example, Patent Document 1).

JP 2004-116849 A

  An infant or a young person may imitate the use of a gas writer by a familiar person such as a father and mess with the gas writer, and may cause a burn or fire due to an unexpected gas combustion flame. In order to prevent such an accident, it is recommended to provide a lock mechanism so that the ignition operator does not move by simple operation. The gas writer of Patent Document 1 includes a push button lock mechanism, and the push button is set to the unlocked position by horizontally sliding the push button (unlock operation). I can't do it.

  By the way, the mechanical lock mechanism of the ignition operator is a fine mechanism, and if a strong force is applied, the lock mechanism may be destroyed and an ignition operation may be possible. In addition, while an infant or a young person is messing with the gas writer, there is a possibility that an unexpected gas combustion flame may occur due to the occurrence of an unlocking operation and an ignition operation, even if unintentionally.

  An object of this invention is to provide the gas writer which does not produce a gas combustion flame by the careless driving of the ignition operation element.

(1) A fuel tank (2) having a fuel gas release valve for sending fuel gas to the gas release nozzle (1), a gas release lever (3) for opening the fuel gas release valve, and the gas release nozzle In a gas writer comprising: an ignition mechanism (4a, 4b) for igniting fuel gas emitted from the outside air; and an ignition operator (5) driven by a finger to ignite and drive the ignition mechanism.
The engagement means (6a) that engages / disengages with respect to the gas release lever (3) and the movement direction of the ignition drive of the ignition operation element (5) are operated with a finger in a direction intersecting with the finger. Receiving operation means (6b) for setting the engagement means (6a) as the engagement position, and when the engagement means (6a) is in the engagement position, the ignition operation element (5) A gas writer comprising: a safety mechanism (6a to 6d) that drives the ignition mechanism in an opening drive direction by moving the ignition mechanism for ignition.

  In addition, in order to make an understanding easy, the code | symbol of the corresponding element or the equivalent element of the Example which is shown in drawing and mentions later in parentheses is attached for reference by reference. The same applies to the following.

  The user operates the receiving operation means (6b) of the safety mechanism (6a to 6d) to set the engagement means (6a) to the engagement position ((b) in FIG. 1), and the ignition operator (5) When the ignition is driven, the engagement means (6a) engages with the gas release lever (3) and opens the gas release lever (3) by this ignition drive, so that the fuel gas is discharged from the gas discharge nozzle (1). It goes out to the outside air, and the ignition mechanism (4a, 4b) is driven to ignite the fuel gas. As a result, a combustion gas flame (10) is generated (FIG. 3).

  Even if a person (for example, an infant or a young person) moves the ignition operation element (5) in the ignition driving direction without operating the receiving operation means (6b), the ignition mechanism (4a, 4b) is temporarily driven ( 2) Since the engaging means (6a) is in the disengagement position and does not engage with the gas release lever (3), the fuel gas release valve remains closed and no fuel gas is emitted from the gas release nozzle (1). No combustion gas flame is generated. Therefore, safety against inadvertent operation is high, and even if the ignition operator (5) is forcibly driven in the ignition drive direction, fuel gas does not come out, so the possibility of generating a combustion gas flame is low and safety is low. high.

It is a longitudinal cross-sectional view of the gas writer of one Example of this invention, (a) is a non-use state, (b) pushes the pin-shaped button 6 of a safety mechanism into the engagement position for gas discharge | release for use. Each state is shown. It is a longitudinal cross-sectional view which shows the state which opened the case lid 5 of the gas writer shown in FIG. 1, leaving the pin-shaped button 6 in the cancellation | release position shown to (a) of FIG. FIG. 2 is a longitudinal sectional view showing a state in which the case lid 5 of the gas writer shown in FIG. 1 is opened with the pin-shaped button 6 placed at the engaging position shown in FIG.

  (2) The safety mechanism (6a to 6d) passes through the ignition operation element (5) in a direction crossing the ignition drive direction and is held by the ignition operation element (5) so as to be able to advance and retreat in the crossing direction. A pin-shaped button (6: 6a-6c) and a spring (6d) forcing the pin-shaped button in a direction in which the ignition operation element (5) protrudes from the outer surface, and the pin-shaped button (6) The gas writer according to (1) above, wherein a tip end portion (6b) protruding from the outer surface is the receiving operation means (6b), and a tail end portion (6a) is the engagement means (6a).

  (3) The outer surface of the ignition operation element (5) is lower than the end surface of the tip portion around the tip portion (6b), but is equal to or higher than the end surface outside the periphery. The gas writer according to (2) above.

  (4) The ignition operation element (5) is a case lid (5) that opens and rotates when a finger is pressed, and the tip end (6b) of the pin-shaped button (6) is connected to the case lid (5). The gas writer according to the above (3), which is exposed to the outside through the case lid (5) at a finger contact portion for opening and turning.

  Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

  The pocket writer shown in FIG. 1 has a liquefied fuel tank 2, and a fuel gas release valve that is a normally closed valve for sending combustion gas to the gas release nozzle 1 is located inside the pocket writer. When the fuel gas is released, the fuel gas release valve is opened, and a part of the liquefied fuel in the liquefied fuel tank 2 is vaporized and comes out from the nozzle 1 to the outside air. The crater unit surrounding the space around the nozzle is connected to the fuel tank 2 by a pin 7.

  The tip of the gas release lever 3 is engaged with the lower end of the nozzle 1, and the gas release lever 3 turns the support pin 9 by turning the tail end of the gas release lever 3 in the clockwise direction. Rotating to the center, the tip of the gas release lever 3 pushes the nozzle 1 upward, thereby opening the fuel gas release valve in the fuel tank 2, and the liquefied fuel in the fuel tank 2 is vaporized and passes through the nozzle 1. To the outside air.

  Next to the liquefied fuel tank 2, in this embodiment, there is a piezoelectric unit 4a. When a pushing arm integrated with the case lid 5 pushes down the slider on the head, the slider 4 is lowered to some extent in the unit 4a. The piezoelectric element is struck by a plunger to generate a high voltage, and the high voltage is applied between the electrode 4b / nozzle 1 to generate an electric spark (spark) between the electrode 4b / nozzle 1 and the fuel gas from the nozzle 1 The fuel gas is ignited by the electric spark, and a flame like a candle flame (10 in FIG. 3) is generated from the crater located above the nozzle 1 of the crater unit. In this embodiment, the combination of the piezoelectric unit 4a and the electrode 4b is an ignition mechanism.

  The case lid 5 that is an ignition operator and the push arm integrated therewith can be rotated around the cap fulcrum pin 8, and the head slider of the piezoelectric unit 4 a is pushed down by the clockwise rotation of the case lid 5. It is done. A pin-shaped button 6 of a safety mechanism is attached to a substantially central portion of the upper side of the case lid 5 that is an ignition operation element.

  In this embodiment, the safety mechanism includes a pin-shaped button 6 that penetrates the case lid 5 and a compression coil spring 6d that forces the button-shaped button 6 upward. The pin-shaped button 6 is an engagement means that engages with the gas release lever 3 and a small-diameter button-like head that is a receiving operation means that a human finger hits, that is, a tip portion 6 b that protrudes from the upper outer surface of the case lid 5 A pin having a tail end portion 6 a and a trunk portion 6 c between the tip end and the tail end, and penetrates the compression coil spring 6 d and the case lid 5. The E-ring is press-fitted into a ring-shaped groove between the tail end portion 6a and the trunk portion 6c penetrating the case lid 5, thereby preventing the pin-shaped button 6 from coming off from the case lid 5. The compression coil spring 6 d forces the small diameter button, which is the tip portion 6 b of the pin button 6, to protrude from the case lid 5.

  As shown in FIG. 1 (a), the outer surface of the case lid 5 as an ignition operator is lower than the end surface of the tip portion 6b around the tip portion 6b of the pin-shaped button 6, but outside the periphery, the Same as or higher than the end face. The user grasps the case main body of the writer shown in FIG. 1A and places the belly of the thumb against the upper end surface of the tip portion 6b of the pin-shaped button 6, and as shown in FIG. The shape button 6 can be depressed.

  When a person such as an infant or a young person pushes down the upper right corner of the case lid 5 shown in FIG. 1A, the case lid 5 may rotate around the pin 8 as shown in FIG. However, in this case, the rotation trajectory of the pin-shaped button 6 and the tail end 6a around the pin 8 ((a) in FIG. 1, a two-dot chain line circle in FIG. 2) indicates that the gas release lever 3 Since it is outside the tail end that jumps up to the shape of the letter U, the tail end portion 6a of the pin-shaped button 6 does not engage with the tail end of the gas release lever 3 and does not rotate. Accordingly, no fuel gas is emitted from the nozzle 1, and even if the piezoelectric unit 4a is driven by the rotation of the case lid 5 to generate a high voltage, and an electric spark is generated between the nozzle 1 / electrode 4b, the combustion gas flame The flame (10 on FIG. 3) is not generated.

  When the user pushes down the tip portion 6b of the pin-shaped button 6 as shown in FIG. 1B and maintains the state, the case lid 5 is rotated in the clockwise direction. The pivot locus of the tail end portion 6a centering on the circle (two-dot chain line circle in FIG. 3) intersects the tail end of the gas release lever 3 jumped up to the shape of the gas release lever 3, so that the tail end portion 6a of the pin-shaped button 6 Engages with the tail end of the gas release lever 3, the gas release lever 3 is driven to rotate clockwise, and the tip of the gas release lever 3 pushes the nozzle 1 upward. As a result, the fuel gas release valve in the fuel tank 2 is opened and the fuel gas flows out from the nozzle 1. Immediately after this, the piezoelectric unit 4a receiving the pressing force by the rotation of the case lid 5 hits the piezoelectric element inside thereof to generate a high voltage, and this high voltage generates an electric spark between the nozzle 1 / electrode 4a. This ignites the spilled gas, i.e. ignites, thereby producing a combustion gas flame 10 as shown in FIG.

  As described above, for example, an infant or a young person moves the case lid 5 in the ignition driving direction without pressing the tip portion 6b (small diameter button) of the pin-shaped button 6, and the piezoelectric unit 4a temporarily generates a high voltage. As a result, even if an electric spark is generated between the nozzle 1 and the electrode 4b, the tail end portion 6a, which is the engaging means of the pin-shaped button 6, does not engage with the tail end of the gas release lever 3, and the fuel gas release valve is closed. Since the fuel gas does not come out from the nozzle 1 while staying, the combustion gas flame 10 is not generated. Therefore, safety against careless operation is high. Even if the case lid 5 is forcibly driven in the ignition drive direction, no fuel gas is emitted, so that the possibility of generating a combustion gas flame is low and safety is high.

1: Gas discharge nozzle 2: Liquefied fuel tank 3: Gas discharge lever 4a: Piezoelectric unit 4b: Electrode 5: Case lid 6: Safety mechanism 6a: Tail end 6b: Tip 6c: Trunk 6d: Compression coil springs 7-9 : Pin 10: Combustion gas flame

Claims (4)

A fuel tank having a fuel gas release valve for supplying fuel gas to the gas release nozzle, a gas release lever for opening the fuel gas release valve, and an ignition mechanism for igniting the fuel gas emitted from the gas release nozzle to the outside air And an ignition operator that is driven by a finger to ignite and drive the ignition mechanism.
When the finger is operated in a direction crossing the moving direction of the ignition drive of the ignition operation element and the engaging means for engaging / disengaging the gas release lever, the engaging means is set to the position of the engagement. Receiving operation means, and when the engagement means is in the engagement position, the ignition operation element is moved in a direction to open the gas release lever by moving the ignition mechanism to drive ignition. A gas writer comprising a driving safety mechanism.   The safety mechanism includes a pin-type button that passes through the ignition operator in a direction crossing the ignition drive direction and is held by the ignition operator so as to advance and retreat in the crossing direction. A tip portion protruding from the outer surface of the pin-shaped button is the receiving operation means, and a tail end portion is the engaging means. The gas writer according to 1.   3. The gas writer according to claim 2, wherein the outer surface of the ignition operation element is lower than an end face of the tip end portion around the tip end portion, but is equal to or higher than the end face around the tip end portion.   The ignition operator is a case lid that opens and rotates when a finger is pressed, and the tip of the pin-shaped button penetrates the case lid at a finger contact portion for opening and rotating the case lid. The gas writer according to claim 3, which is exposed to the outside.

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