JP3659843B2 - Ignition guard structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a guard structure for an ignition device, and is particularly configured to prevent inadvertent malfunction.
[0002]
[Prior art]
Conventionally, as an ignition device suitable for ignition of, for example, fireworks, a gas tank has been provided on one end side of an elongated device body as described in Utility Model Registration No. 2573995, and a gas passage is opened and closed at the top of the gas tank. In addition to a valve mechanism, a gas passage extends from the valve mechanism to the other end of the apparatus main body, an injection nozzle is disposed at the tip of the gas mechanism, and in conjunction with a lever-type operation button that can be operated from the outside. A piezoelectric unit that feeds the discharge voltage is provided, a lever mechanism that opens the valve mechanism in conjunction with the feeding operation of the piezoelectric unit is provided, and the piezoelectric unit is operated by operating the operation lever from the outside. The valve mechanism opens the gas passage in conjunction with the operation of the nozzle and causes the fuel gas to be ejected from the injection nozzle, and the piezoelectric unit generates a discharge voltage that is in the vicinity of the injection nozzle. A portable bar-like ignition device configured to ignite a fuel gas applied between a discharge terminal provided in the nozzle and a nozzle tip at the tip of an injection nozzle, that is, an ignition rod has been developed. In the ignition rod described in this publication, an operation button window is provided in a main body case, and a finger is put into this window to press the operation button. In this case, the operation direction of the operation button is parallel to the ignition direction, that is, the longitudinal direction of the apparatus, and the operation button is provided in a plane parallel to the longitudinal direction of the apparatus, that is, the operation direction by securing a space for a finger to enter a portion corresponding to the window frame. The guard structure which surrounds the outer periphery of this and prevents the malfunction of an operation button is comprised.
[0003]
In addition, there is an ignition rod with an operation button that operates in a direction that intersects the ignition direction (the longitudinal direction of the device). In this case, a lock that restricts the movement of the operation button to prevent malfunction. A member is provided.
[0004]
[Problems to be solved by the invention]
The ignition rod described in the above publication has a guard structure in which the operation direction of the operation button is parallel to the ignition direction, that is, the apparatus longitudinal direction, and surrounds the outer periphery of the operation button in a plane parallel to the apparatus longitudinal direction, that is, the operation direction. If you don't actually operate the operation button with the wrench in place, you won't ignite accidentally just by accidentally dropping or stepping on it, but in forming the guard structure, the mold becomes complicated and the yield gets worse. , Manufacturing costs are high.
[0005]
In that respect, the ignition rod with the operation button that operates in the ignition direction, that is, the direction that intersects the longitudinal direction of the device is not conspicuous, so it can be freely designed according to the application, for example, as an ignition rod for Buddhist altar The degree is great. However, in this case, the operation button operated in the direction intersecting with the longitudinal direction of the apparatus is provided with a lock member and is configured not to operate unless the lock is released, but is left in the unlocked state after use. In some cases, it may cause an impact when it is dropped, or accidental ignition just by rolling on the floor and being stepped on.
[0006]
Therefore, in a portable ignition device provided with an operation button that operates in a direction crossing the longitudinal direction of the device, it is a problem to prevent inadvertent malfunction while ensuring a degree of freedom in design.
[0007]
[Means for Solving the Problems]
The present invention relates to a portable ignition device that includes an operation button that protrudes from a wall surface of the apparatus body and that is operated to press in a direction that intersects the longitudinal direction of the apparatus. A guard wall that restricts transmission of the non-dependent pressing force to the operation button is provided, and in particular, a gas tank that stores fuel gas, a valve mechanism that opens and closes a gas passage from the gas tank, and a front end in the longitudinal direction of the apparatus An injection nozzle that injects fuel supplied from the valve mechanism through the extension passage, and an ignition mechanism that ignites fuel gas injected from the injection nozzle, and operates in a direction that intersects the longitudinal direction of the apparatus. It is preferable that the present invention is applied to a rod-like ignition device having an operation button for activating the valve mechanism and the ignition mechanism to ignite fuel gas, that is, an ignition rod.
[0008]
In this case, the ignition device is provided with an operation button that operates in the ignition direction, that is, the direction that intersects the longitudinal direction of the device, and the operation portion is inconspicuous. The degree of freedom of the combined design is originally large. In an ignition device having an operation button that operates in a direction intersecting with the longitudinal direction of the device, the device body wall surface around the operation button is applied to the operation button of the pressing force not depending on the normal operation of the operation button. By providing a guard wall that restricts transmission, a pressing force that generates a discharge voltage when it is accidentally dropped or stepped on does not act on the operation button, thereby preventing inadvertent ignition. In addition, the guard structure is composed of a guard wall provided on the wall of the device body around the operation buttons. The guard structure itself can be designed in a variety of ways and can be made inconspicuous, and the design freedom of the entire device can be maintained. .
[0009]
The guard wall should be provided in the shape of a rib so that it surrounds the three sides of the operation button, so that the normal operation of pressing the operation button with your finger can be performed without any trouble, and it will be received from the floor etc. when dropped or stepped on It is possible to regulate the transmission of impact and pressing force to the operation buttons.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
FIG. 1 shows each example of an embodiment of the present invention applied to an ignition rod. FIG. 2 shows the operation of the guard structure of the ignition rod according to the example (example shown in FIG. 1A), and FIGS. 3 to 6 show the configuration of the ignition rod.
[0012]
The ignition rods 1A to 1D (ignition devices) shown in FIGS. 1 (a) to 1 (d) are all designed for a Buddhist altar, and are divided into two parts consisting of a shell-like front case 2a and a back case 2b. A cap 3 is assembled to the tip of the case 2, and a bottom plate 4 (not shown in FIG. 1) is assembled to the bottom. The device operation button 5 of the push lever type operating in the longitudinal direction and the direction crossing are disposed in the form that protrudes from the hole of the back case 2b top. Further, a lock member 6 that locks the end of the operation button 5 on the pressing portion side is slidably mounted across the wall surface of the back case 2b. Then, rib-shaped guard walls 7A to 7D are formed so as to surround three sides excluding the end portion on the side where the finger of the operation button 5 is placed.
[0013]
The guard walls 7 </ b> A to 7 </ b> D regulate the transmission of a pressing force not based on a regular operation to the operation button 5 while ensuring a space on the pressing portion side that does not hinder the pressing operation of the operation button 5 with a finger. The shape and height can be set.
[0014]
For example, in the example shown in FIG. 1A, the guard wall 7A is provided along the hole of the back case 2b in a range surrounding three sides from the periphery of the fulcrum portion of the operation button 5 to the position applied to the pressing portion, The intermediate position between the fulcrum part and the pressing part is slightly lower than the maximum protruding height of the operation button 5, but is gradually lower on the fulcrum part side and the pressing part side at a maximum height higher than the height of the pushing position leading to ignition. It is a shape. The guard wall 7A restricts the transmission of the pressing force to the operation button 5 that does not depend on the proper operation when the ignition rod 1A is accidentally dropped or stepped on, and the pressing force is such that a discharge voltage is generated. The guard structure for preventing it from acting on 5 is comprised. By having such a guard wall 7A, the ignition rod 1A is rolling to the floor surface, for example, while being unlocked, and when it is stepped on as shown by the arrow in FIG. 2 (a), it is shown in FIG. 2 (b). As described above, the guard wall 7A is supported and a gap is formed between the case body 2 and the floor surface. Therefore, the operation button 5 is not pushed beyond a certain limit, and an inadvertent malfunction is prevented.
[0015]
In the example of FIG. 1B, a guard wall 7B having a substantially constant height is provided along the hole of the back case 2b in a range surrounding three sides from the periphery of the fulcrum portion of the operation button 5 to the position applied to the pressing portion. It is a thing. Further, in the example of FIG. 1C, a guard wall 7C having a substantially constant height is provided along the hole of the back case 2b in the range from the periphery of the fulcrum portion of the operation button 5 to the rear of the pressing portion. It is. Further, in the example of FIG. 1D, a guard wall 7 </ b> D is provided so as to surround the periphery of the fulcrum portion of the operation button 5 and the front of the pressing portion, and a support column 8 is erected on the rear side of the operation button 5. . Also in these examples, the guard walls 7B, 7C, 7D and the support column 8 function as a guard structure for preventing an inadvertent malfunction of the operation button 5 and perform the same operation.
[0016]
Next, another configuration of the ignition rod 1A will be described with respect to the example of FIG. Other examples of the ignition rods 1B to 1D shown in FIGS. 1B to 1D also have the same configuration as the ignition rod 1A of FIG.
[0017]
The ignition rod 1A is as shown in FIGS. 3 to 6, and the main body case 2 is constituted by the shell-like front case 2a and the back case 2b as described above. And the cap 3 is assembled | attached to the front-end | tip of the main body case 2, and the baseplate 4 is assembled | attached to the bottom part.
[0018]
A gas tank 10 for storing fuel gas is disposed inside the main body case 2 on the bottom side. The gas tank 10 has a bottomed cylindrical tank body 11 made of a synthetic resin molded product and a valve mechanism 20 described later, and is airtightly fixed to the upper surface of the tank body 11 and is made of butane gas or the like inside the tank body 11. Synthetic resin upper lid 13 that constitutes tank chamber 12 in which fuel gas is stored, and a synthetic resin bracket that holds piezoelectric unit 40 (to be described later) and supports rotation lever 43 and is fitted to the upper surface of upper lid 13 It consists of 14 and.
[0019]
The upper lid 13 of the tank main body 11 holds a valve mechanism 20 that opens and closes a gas passage from the gas tank 10 to control the supply and shutoff of the fuel gas and control the amount of fuel gas ejected. The valve mechanism 20 has a known structure, and a nozzle bottom 23 constituting a gas passage and a valve seat is airtightly fitted with a core holder 22 holding a core 21 for sucking liquid fuel gas from the gas tank 10 interposed therebetween. The nozzle screw 24 is attached to the upper part of the nozzle bottom 23, and the nozzle member 25 is disposed through the nozzle screw 24. The lower end of the nozzle member 25 with the valve rubber attached reaches the valve seat position of the nozzle bottom 23 and is urged toward the valve seat portion of the nozzle bottom 23 by the nozzle spring 26 arranged inside the nozzle screw 24, Is inserted and supported by a joint 27 fixed to the partition wall of the main body case 2. In the nozzle member 25, the valve rubber at the lower end is normally seated on the valve seat portion of the nozzle bottom 23 by the urging force of the nozzle spring 26, and the gas passage is closed. Then, a gas passage is opened when a later-described rotation lever 43 lifts the nozzle member 25. Further, by moving the flame adjustment knob 28 extending from the ring screwed and fitted to the outer periphery of the tip of the nozzle screw 24 and projecting outward from the hole formed in the split fitting portion of the two-piece main body case 2, the nozzle screw 24 is moved. Rotation, the amount of ejection is adjusted.
[0020]
Inside the front end of the main body case 2, a front case 2a and a back case 2b constitute a nozzle holder portion 29, and an injection nozzle 30 is disposed on the nozzle holder portion 29 toward the front end. A gas pipe 31 is disposed between the joint 27 and the injection nozzle 30 so as to supply fuel gas from the valve mechanism 20 to the injection nozzle 30. The nozzle holder 29 is provided with a heat insulating ring 32 having a slit for enhancing the ignitability by discharge ignition so as to surround the tip of the injection nozzle 30.
[0021]
A piezoelectric unit 40 is disposed inside the main body case 2. The piezoelectric unit 40 has a structure known per se for supplying a discharge voltage, and is held by the bracket 14 of the tank main body 10, and a mechanical holder via the link 41 in accordance with the pressing operation of the operation button 5. When 42 is pushed down, a discharge voltage is generated.
[0022]
The bracket 14 of the tank main body 10 also supports a substantially L-shaped rotating lever 43 for opening the valve mechanism 20 and ejecting fuel gas in conjunction with the piezoelectric unit 40. The mechanical holder 42 of the piezoelectric unit 40 is a lever for rotating the nozzle member 25 in the direction of lifting the nozzle member 25 when the mechanical holder 42 is pushed down in conjunction with the pressing operation of the operation button 5. Push 44 is attached.
[0023]
The operation button 5 is disposed so as to travel from the hole in the upper part of the back case 2b as described above, and is supported with the pair of left and right pins 5a and 5b of the one end support portion as a fulcrum while engaged with the link 41. The other end pressing portion is rotated by being pressed in a direction intersecting the apparatus longitudinal direction, and is configured to push down the mechanical holder 42 of the piezoelectric unit 40 via the link 41. In addition, the lock position that enters the lower end of the end of the operation button 5 on the pressing portion side to prevent the pressing operation of the operation button 5, and the pressing operation of the operation button 5 that deviates from the lower end of the end of the operation button 5 on the pressing portion side. The lock member 6 is mounted so as to be slidable across the wall surface of the back case 2b. As described above, the intermediate position between the fulcrum part and the pressing part is located along the hole of the back case 2b in the range surrounding the three sides from the periphery of the fulcrum part of the operation button 5 to the position applied to the pressing part. The guard wall 7A is formed in a shape that is slightly lower than the maximum projecting height of 5 and higher than the height of the push-in position leading to ignition, and gradually lowering toward the fulcrum portion side and the pressing portion side.
[0024]
The cap 3 protrudes from the front end of the main body case 2 and is disposed so as to surround the heat insulating ring 32. The cap 3 is formed of a metal press product, and is fitted to the front end of the main body case 2 in a hooking manner. A crater 3a through which a flame passes is opened at the center of the front end surface of the cap 3, and a plurality of air inlets 3b are opened on both sides of the rear portion of the cap 3, and a discharge electrode is formed by cutting a part of the cap inward on the front surface. 45 is provided.
[0025]
The bottom plate 4 is configured to be pushed into a step space formed at the bottom of the main body case 2 and sandwich and fix the front case 2a and the back case 2b with a hook structure.
[0026]
The lever push 44 attached to the mechanical holder 42 of the piezoelectric unit 40 also serves as one electrode terminal of the discharge voltage. The rotation lever 43 is formed of a conductive resin, and passes through the rotation lever 43 from the lever push 44. It is electrically connected to the joint 27 through the nozzle member 25. A conducting wire (not shown) is disposed between the joint 27 and the spray nozzle 30 at the tip of the apparatus, and the spray nozzle 30 can be energized via the joint 27. Further, a positive terminal 46 is disposed on the main body case 2 so as to conduct the other electrode of the discharge electrode to the cap 3. The positive terminal 46 has one end inside the main body case 2 and is in sliding contact with the electrode terminal exposed to the mechanical holder 42 of the piezoelectric unit 40, and the other end is bent out of the main body case 2 so as to fit inside the cap 3. It is assumed that it was arranged. In this way, one electrode is conducted to the injection nozzle 30 and the other electrode is conducted to the discharge electrode 45 formed on the cap 3 so that both electrodes of the piezoelectric unit 40 are electrically connected.
[0027]
In the ignition rod 1A, when the operation button 5 is pushed down with a finger, the mechanical holder 42 of the piezoelectric unit 40 is pushed down via the link 41. Then, as the mechanical holder is pushed, the lever push 44 moves, and the rotating lever 43 pushed by the lever push 44 lifts the nozzle member 25, thereby opening the valve mechanism 20 and passing through the gas pipe 31. Fuel gas is ejected from the injection nozzle 30. Further, a discharge voltage is generated in the piezoelectric unit 40 with the movement of the mechanical holder 42, and this discharge voltage is discharged between the discharge electrode 45 of the cap 3 and the injection nozzle 30 via the plus terminal 46 and the conductive wire, thereby The gas is ignited. Then, by continuing to press the operation button as it is, it is ignited and held in a flame. Then, when the finger is released from the operation button 5, the mechanical holder 42 of the piezoelectric unit 40 is restored to the original position by the repulsive force of the return spring inside the piezoelectric unit 40, and the rotating lever 43 is released from the pressing by the lever push 44. Thus, the nozzle member 25 is lowered to the original position by the repulsive force of the nozzle spring 26, the valve mechanism 20 is closed, the gas passage is shut off, and the flame disappears.
[0028]
Although the illustrated example described above is designed for the Buddhist altar, the present invention is of course applicable to other various ignition devices, and is not limited to a rod-like ignition device. It can be widely applied to devices in general.
[0029]
【The invention's effect】
As described above, according to the ignition device of the present invention, the wall of the device body around the operation button is secured while ensuring the degree of freedom of design of the ignition device including the operation button operated in the direction crossing the longitudinal direction of the device. The guard wall provided on the control wall restricts the transmission of the pressing force to the operation button not depending on the normal operation of the operation button, thereby preventing inadvertent ignition when accidentally dropped or stepped on.
[Brief description of the drawings]
FIG. 1 is a perspective view (a) to (d) of an ignition rod showing respective examples of embodiments of the present invention;
2A and 2B are views for explaining the operation of the ignition rod guard structure shown in FIG.
FIG. 3 is a longitudinal sectional view of the ignition rod shown in FIG.
4 is a top view of the ignition rod shown in FIG.
FIG. 5 is a side sectional view of the ignition rod shown in FIG.
6 is a longitudinal sectional view in side view showing an operating state of the ignition rod shown in FIG. 1 (a). FIG.
[Explanation of symbols]
1A, 1B, 1C, 1D Ignition rod 2 Body case 5 Operation buttons 7A, 7B, 7C, 7D Guard wall 8 Support column
10 Gas tank
20 Valve mechanism
30 injection nozzle
40 Piezoelectric unit (ignition mechanism)

Claims (4)

In the portable ignition device provided with an operation button that protrudes from the wall surface of the apparatus main body and is operated to press in the direction intersecting with the apparatus longitudinal direction,
A guard structure for an ignition device, characterized in that a guard wall for restricting transmission of a pressing force that is not caused by a normal operation of the operation button to the operation button is provided on a wall surface of the apparatus body around the operation button. A gas tank that stores fuel gas, a valve mechanism that opens and closes a gas passage from the gas tank, an injection nozzle that is disposed at a front end in the longitudinal direction of the apparatus and injects fuel supplied from the valve mechanism via an extension passage; An ignition mechanism for igniting the fuel gas injected from the injection nozzle is provided, protrudes from the wall surface of the apparatus main body, and operates the valve mechanism and the ignition mechanism by an operation in a direction crossing the apparatus longitudinal direction to ignite the fuel gas. In a rod-like ignition device with an operation button,
A guard structure for an ignition device, characterized in that a guard wall for restricting transmission of a pressing force that is not caused by a normal operation of the operation button to the operation button is provided on a wall surface of the apparatus body around the operation button.   The guard structure parallel to the longitudinal direction of the ignition device according to claim 1 or 2, wherein the guard wall is provided in a rib shape so as to surround three sides of the operation button.   The guard structure for an ignition device according to claim 1 or 2, wherein the guard wall surrounds the periphery of the fulcrum portion of the operation button, and a support column is erected on the rear side of the operation button.

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