JP2001074243A - Assembly structure of ignition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and reliably fix the two-division body case of an ignition, to ensure the degree of freedom in terms of a design and structure, and to simply disassemble. SOLUTION: This assembly structure consists of surface and back cases 2a and 2b, a step space 50 is formed in the rear end face of a two-division body case 2, and holes 61 and 62 for locking a hook are formed in two spots positioned to face each other with a division surface nipped therebetween in the bottom of the step space 60 and one spot on a division surface. By pushing a bottom 4 having three elastic hooks 71 and 72 provided inwardly with claws 71a and 72a in the step space 60, the body case 2 is nipped for fixing. Jig insertion holes 81 and 82 are formed in a bottom plate 4 and in the inside of the elastic hooks 71 and 72. Jig insertion holes 81 and 82 are formed in the bottom plate 4 and in the inside of the elastic hooks 71 and 72. By inserting a jig, the elastic hooks 71 and 72 are unhooked from the holes 61 and 62 for locking a hook, and the bottom plate 4 is pulled off for disassembly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure of an igniter, and more particularly, to a halves of an igniter which can easily and securely fix a main body case thereof, a degree of freedom in design and structure can be ensured, and it can be easily disassembled. It is configured so that it cannot be performed.

[0002]

2. Description of the Related Art Conventionally, as an ignition device suitable for igniting fireworks or the like, a gas tank is provided at one end of an elongated device body as described in Utility Model Registration No. 257395, and an upper portion of the gas tank is provided. A valve mechanism for opening and closing the gas passage is provided, and the gas passage extends from the valve mechanism to the other end of the apparatus main body, an injection nozzle is provided at the tip thereof, and a lever-type operation operable from outside. A piezoelectric unit that supplies the discharge voltage in conjunction with the button is provided,
A lever mechanism that opens the valve mechanism in conjunction with the power supply operation of this piezoelectric unit is provided, and the piezoelectric unit operates by operating the operation lever from outside, and the valve mechanism opens the gas passage in conjunction with the operation of the piezoelectric unit. When opened, fuel gas is ejected from the injection nozzle, and the piezoelectric unit generates a discharge voltage, which is applied between the discharge terminal provided near the injection nozzle and the nozzle tip at the tip of the injection nozzle. Portable rod-shaped ignition devices or ignition rods configured to ignite the ejected fuel gas have been developed. In the ignition rod described in this publication, the case portion of the main body is formed of a tank cover and an intermediate case in front of the tank cover, and the intermediate case has a split structure, and a cylindrical tank having the split intermediate case opened forward. It has an assembly structure that is fixed by a cover.

[0003] Separately, there has been conventionally known an ignition device having a structure in which a main body case, which is entirely divided into two parts, is assembled with screws instead of using a tank cover.

[0004]

The assembling structure using the tank cover as described in the above publication has a simple structure and is easy to assemble, but the case is divided into an intermediate case and a tank cover. Therefore, there is a problem that the design and the structure are greatly restricted, and that the general user can easily disassemble.

[0005] In addition, the assembling structure using the screw stops complicates the assembling process and increases the cost.

Therefore, it is an object to provide an assembling structure of an ignition device which can easily and surely fix a split main body case, secure a degree of freedom in design and structure, and cannot be easily disassembled by a general user. .

[0007]

SUMMARY OF THE INVENTION The present invention relates to an assembling structure for an ignition device in which a split main body case is integrally assembled, and a space recessed in a step-like shape with respect to a peripheral portion is formed on an outer end surface of a bottom portion of the main body case. At the same time, holes for hooks are provided at a plurality of places including two places sandwiching the inner split surface of the space, and a bottom plate having elastic hooks to be engaged with the holes for hooks is provided on the stepped space. By pressing the elastic hook into the hole of the main body case, the main body case is sandwiched and fixed by the bottom plate. In this case, in a state where the split main body case is fitted, the bottom plate is pushed into the stepped space formed on the bottom outer end surface, so that the elastic hooks of the bottom plate can be inserted into the main body case at a plurality of positions including two places sandwiching the split surface. Is hooked into the hole for hooking, and the body case is split. In this manner, the split main body case can be easily and reliably fixed by the hook-type bottom plate. Then, the bottom plate can be made inconspicuous by being pushed into the stepped space at the bottom of the main body case, and since the case portion of the device main body is substantially constituted by a split main body case, the degree of freedom in design and structure is reduced. large. In addition, since the bottom plate is pressed into the stepped space at the bottom of the main body case and fixed by hooks, it is difficult to remove the hook from the outside and cannot be easily disassembled.

[0008] The above structure is, for example, a gas tank for storing a fuel gas, a valve mechanism for opening and closing a gas passage from the gas tank, and a valve mechanism disposed at a front end in the longitudinal direction of the apparatus and supplied from the valve mechanism via an extension passage. It is preferable to apply the present invention to an assembling structure in which a split main body case of a rod-shaped ignition device having an injection mechanism for injecting fuel and an ignition mechanism for igniting fuel gas injected from the injection nozzle is integrally assembled. The rod-shaped ignition device configured as described above is suitable for ignition of fireworks and the like, and can also be designed and structured, for example, for Buddhist altars, and has a great advantage in that the degree of freedom in design and structure is large.

Further, it is preferable that the hook locking holes are provided, for example, at two positions across the split surface and at one position on the split surface, and three elastic hooks are provided on the bottom plate so as to engage with the holes. Well, by doing so, the assembly structure can be simplified. In this case, the main body case is fixed integrally by elastic hooks that engage with two holes sandwiching the split surface,
Locking at these two points and one point on the split surface enables stable locking.

[0010] The assembling structure of the ignition device is characterized in that the elastic hooks are arranged along the periphery of the bottom plate, are erected in the pushing direction of the bottom plate, and have an inward claw formed at the tip with the periphery being back. In addition, it is preferable that a jig insertion hole for inserting a jig for pushing each elastic hook from the inside to remove the claw portion from the hole of the main body case is provided in the bottom plate. In such a case, the bottom plate can be removed by using a special jig. In this case, the jig insertion hole is provided inside each elastic hook to form a hole surface flush with the base inner surface of the hook leg, and the elastic hook has a base inner surface of the hook leg. A rib that tapers toward the claw is provided between the claw and the claw, and a notch for releasing the rib is provided in the hook locking hole at the portion that locks the claw of the elastic hook. Is good. In such a case, the inserted jig comes into contact with the rib to push open the elastic hook, so that the hook can be easily released.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 8 show an embodiment of the present invention applied to an ignition rod. 1 to 3 show the entire structure of the ignition rod, FIG. 4 shows an assembly structure of the main body case, and FIGS. 5 to 7 show states before and after the assembly of the rear part of the main body case. FIG. 8 shows an operation of assembling the main body case with a bottom plate, and FIG. 9 shows an operation of removing the bottom plate of the main body case using a jig.

The ignition rod (ignition device) shown in FIG. 1 is designed for a Buddhist altar, and a cap 3 is provided at the tip of a split main body case 2 composed of a shell-shaped front case 2a and a back case 2b. The bottom plate 4 is assembled to the bottom. A pressing lever-type operation button 5 operated in a direction intersecting with the longitudinal direction of the apparatus is provided so as to travel through a hole at the top of the back case 2b. A lock member 6 for locking the end of the operation button 5 on the pressing portion side.
Are slidably mounted on the wall of the back case 2b. A rib-shaped guard wall 7 is formed so as to surround three sides of the operation button 5 except for the end on which the finger is placed.

Inside the main body case 2, a gas tank 10 for storing fuel gas is provided on the bottom side. The gas tank 10 has a bottomed cylindrical tank body 11 made of a molded product made of a synthetic resin, and is hermetically fixed to an upper surface of the tank body 11 while holding a valve mechanism 20 to be described later. A synthetic resin upper lid 13 constituting a tank chamber 12 in which fuel gas is stored, and a synthetic resin bracket fitted to the upper surface of the upper lid 13 while holding a piezoelectric unit 40 described below and supporting a rotating lever 43 It consists of 14 and.

The upper lid 13 of the tank body 11 has a gas tank 10
A valve mechanism 20 that opens and closes the gas passage from the engine to control the supply and cutoff of fuel gas and the amount of fuel gas ejected
Is held. The valve mechanism 20 has a structure known per se, and a gas holder and a nozzle bottom 23 forming a valve seat are fitted airtightly with a wick holder 22 holding a wick 21 for sucking up liquid fuel gas from the gas tank 10 interposed therebetween. The nozzle screw 24 is mounted on the top of the nozzle bottom 23, and the nozzle screw
A nozzle member 25 is provided penetrating through the nozzle member 24. The lower end of the nozzle member 25, on which the valve rubber is mounted, reaches the valve seat position of the nozzle bottom 23, is urged toward the valve seat of the nozzle bottom 23 by a nozzle spring 26 arranged inside the nozzle screw 24, and the upper part is It 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 set at the bottom of the nozzle by the urging force of the nozzle spring 26.
Close the gas passage by sitting on the 23 valve seat. Then, the gas passage is opened by the rotation lever 43 described later lifting the nozzle member 25. Further, the main body case 2 is extended from a ring screwed and fitted around the tip of the nozzle screw 24.
By moving the flame adjusting knob 28 protruding to the outside from the hole formed in the split fitting portion, the nozzle screw 24 rotates, and the ejection amount is adjusted.

At the end of the main body case 2, a nozzle holder 29 having a structure divided in half into a front case 2a and a back case 2b is provided.
The injection nozzle 30 is disposed in the nozzle holder 29 so as to extend outward from the tip. Then, the joint 27 is supplied so that the fuel gas is supplied from the valve mechanism 20 to the injection nozzle 30.
A vinyl hose 31 is provided between the nozzle and the injection nozzle 30. In addition, a heat insulating ring 32 having a slit for enhancing the ignitability by discharge ignition and protecting the nozzle holder 29 from ignition heat is disposed in the nozzle holder 29 so as to surround the tip of the injection nozzle 30. Have been. The heat insulating ring 32 also fixes the front case 2a and the back case 2b on the distal end side by fitting into a nozzle holder portion 29 that is half-split into the front case 2a and the back case 2b. As will be described later, the front case 2a and the back case 2b are further fixed on the bottom side by the bottom plate 4.

A piezoelectric unit 40 is provided 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 body 10, and, when the operation button 5 is pressed, a mechanical holder via the link 41. It is configured to generate a discharge voltage when 42 is depressed.

The bracket 14 of the tank body 10 also includes
A substantially L-shaped rotating lever 43 for opening the valve mechanism 20 and ejecting the fuel gas in conjunction with the piezoelectric unit 40 is supported. The mechanical holder 42 of the piezoelectric unit 40 is provided with a lever for rotating the nozzle member 25 in a direction to lift the nozzle member 25 by pressing the rotary lever 43 when the mechanical holder 42 is pressed down in conjunction with the pressing operation of the operation button 5. Push 44 is attached.

The operation button 5 is connected to the back case 2 as described above.
b A pair of left and right pins 5 of one end supporting portion are provided in a state where the
a and 5b are supported by a fulcrum, and the other end pressing portion is rotated by being pressed in a direction intersecting with the longitudinal direction of the device, and is rotated to push down the mechanical holder 42 of the piezoelectric unit 40 via the link 41. . Further, a lock position for entering the lower end of the operation button 5 on the pressing portion side to prevent the pressing operation of the operation button 5, and a pressing operation of the operation button 5 being disengaged from the lower end of the pressing portion side of the operation button 5. As described above, the lock member 6 is mounted so as to be slidable across the wall surface of the back case 2b so that the lock member 6 can be switched to the lock release position that allows the lock.

The cap 3 is disposed so as to surround the heat insulating ring 32 protruding from the tip of the main body case 2.
It is formed of a metal pressed product, and is fitted to the tip 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 face of the cap 3, and a plurality of air introduction ports 3b are opened at the side and the rear side of the cap 3, and a part of the cap is cut and raised inside the front. A discharge electrode 45 is provided. The cap 3 has a hole 51 for hooking.

The bottom plate 4 is pushed into a stepped space formed at the bottom of the main body case 2 as described later, and is configured so as to sandwich and fix the front case 2a and the back case 2b by a hook structure.

The lever push 44 attached to the mechanical holder 42 of the piezoelectric unit 40 also serves as one electrode terminal of the discharge electrode, and the rotating lever 43 is formed of a conductive resin.
It is electrically connected to the joint 27 via the nozzle member 25 from the lever push 44 via the rotation lever 43. A conductive wire (not shown) is provided between the joint 27 and the injection nozzle 30 at the end of the apparatus, and the injection nozzle 30 can be energized through the joint 27. A plus terminal 46 is connected to the main body case 2 so that the other electrode of the discharge electrode is electrically connected to the cap 3.
Are arranged. One end of the positive terminal 46 is in sliding contact with the electrode terminal exposed to the mechanical holder 42 of the piezoelectric unit 40 at one end inside the main body case 2, and the other end is inserted outside the main body case 2 so as to fit inside the cap 3. The arrangement is bent. In this way, one of the poles is electrically connected to the injection nozzle 30, and the other is electrically connected to the discharge electrode 45 formed on the cap 3, so that the two electrodes of the piezoelectric unit 40 are electrically connected.

When the operation button 5 is pressed down with a finger, the link
The mechanical holder 42 of the piezoelectric unit 40 is pushed down via 41. Then, the lever push 44 moves with the pushing movement of the mechanical holder 42, and the rotating lever 43 pushed by the lever push 44 lifts the nozzle member 25, thereby
The valve mechanism 20 opens, and fuel gas is ejected from the injection nozzle 4 via the gas pipe 31. In addition, a discharge voltage is generated in the piezoelectric unit 40 in accordance with the movement of the mechanical holder 42, and this discharge voltage is applied to the discharge electrode 45 of the cap 3 through the positive terminal 46 and the conductor.
And the injection nozzle 30 to ignite the ejected gas. Then, by continuing to press the operation button as it is, the ignition and the flame are maintained. And
When the finger is released from the operation button 5, the mechanical holder 42 of the piezoelectric unit 40 returns 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 being pressed by the lever push 44, 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 is extinguished.

In the ignition rod 1, the front case 2 a and the back case 2 b are fitted on the split surface in the state shown in FIG. 4, and after the heat insulating ring 32 is fitted, the bottom is fixed by the bottom plate 4. Then, the cap 3 is attached to the tip. In FIG. 4, the internal mechanism and the like are omitted.

Elastic hooks 53 are formed on both sides of the front end of the main body case 2 to hook the cap 3 to the main body case 2 by engaging with holes 51 on both sides of the cap 3. Each of the elastic hooks 53 is provided on the front case 2a and the rear case 2b so as to be opposed to both sides of the main body case 2, and the elastic hooks 53 are provided on the front case 2a and the back case 2b made of synthetic resin. The elasticity is imparted by cutting a part of the outer wall of the end to form a cantilever support.

As shown in FIG. 5, the front case 2a and the back case 2b constituting the split main body case 2 are formed such that the rear end surface is depressed except for the outer edge except for the split surface side. By forming the rear end surfaces of the front case 2a and the back case 2b in this manner, the bottom outer end surface of the main body case 2 formed by fitting the front case 2a and the back case 2b is as shown in FIG. A step space 60 recessed in a step shape with respect to the peripheral edge is formed. Table case 2a
Holes 61 and 62 for hook locking are formed at one place on each side along the outer edge facing the split surface at the concave portion of the rear end surface of the rear case 2b and the front case 2a. When the body case 2 is formed by fitting the
As shown in (b), notches 63a, 63b opened on the split surface side are formed so as to form another hook locking hole 63 on the side far from the two holes 61, 62 sandwiching the split surface. Is formed.

The bottom plate 4 is a molded product made of a synthetic resin, has a peripheral shape fitted into the step space 60 of the main body case 2, and is disposed along the peripheral edge to form three hook locking holes of the main body case 2. Three elastic hooks 71, 72, 73 that engage with 63 are formed. These three elastic hooks 71, 72, 73 are connected to the bottom plate 4
The bottom plate 4 is attached to the end of the hook leg that is erected in the pushing direction.
Have inwardly directed claws 71a, 72a, 73a with the periphery of the back. The bottom plate 4 is provided with jig insertion holes 81, 82, 83 inside the elastic hooks 71, 72, 73, respectively. These jig insertion holes 81, 82, and 83 have elastic hooks 71, 7
The hook leg portions 2 and 73 are formed so as to be flush with the inner surface of the base end.

Each of the elastic hooks 71, 72, 73 of the bottom plate 4 has a taper between the base inner surface of the hook leg and the claws 71a, 72a, 73a toward the claws 71a, 72a, 73a. Ribs 71b, 72b, 73b are provided. And
Each of the hook locking holes 61, 62, 63 of the main body case 2 has ribs 71b, 72b, 73b at portions where the hooks 71a, 72a, 73a of the elastic hooks 71, 72, 73 are locked. Cutout
61a, 62a and 63a are provided. Elastic hook 71, 7
As shown in FIG. 7, the ribs 71b, 72b, 73b run away into the notches 61a, 62a, 63a, and the claws 71a, 72a, 73a.
Are locked in the holes 61, 62, 63 for hook locking.

As shown in FIG. 8 (a), the bottom plate 4 is manually pushed into the step space 60 at the bottom of the main body case 2 in which the front case 2a and the back case 2b are fitted together, in the direction indicated by the arrow. It is assembled in the state shown in FIG. In this state, the bottom plate 4 is fitted into the stepped space 60, and the elastic hooks 71, 72 are locked in the hook locking holes 61, 62 of the main body case 2 at two places on both sides of the split surface. The main body case 2 is sandwiched and fixed, and the elastic hook 73 is also locked in the hole 63 of the main body case 2 on the split surface, so that a stable three-point locking state is achieved.

Although the bottom plate 4 once assembled is fitted into the step space 60 of the main body case 2 and cannot be easily removed, it can be removed using a dedicated jig 90 as shown in FIG. . This jig 90 has three parallel protruding pieces 90a that can be inserted into the jig insertion holes 81, 82, 83 of the bottom plate 4 at the same time.
In FIG. 9A, the three protruding pieces 90 are pushed by hand in the directions indicated by arrows.
a into the jig insertion holes 81, 82, 83. Then jig 90
Of the elastic hooks 71, 72, 73 are ribs 71b, 72
The elastic hooks 71, 72, 73 are pushed into the form of pushing the ribs 71b, 72b, 73b which come into contact with the hooks b, 73b and have a tapered shape toward the claws 71a, 72a, 73a. As a result, the claws 71a, 72a, 73a are disengaged from the hook locking holes 61, 62, 63, and the jig 90 can be pulled out together with the jigs 90 in the direction indicated by the arrow in FIG. 9B.

In the example shown in the figure, holes for retaining hooks are provided at two places across the split face of the main body case and one place on the split face, and three elastic hooks are provided on the bottom plate. The arrangement of the hook locking holes and the elastic hooks may be any number of locations including two locations across the split surface, and can be changed as appropriate.

Although the illustrated example is designed for a Buddhist altar, the present invention is of course applicable to other various types of ignition devices, and is not limited to a rod-shaped ignition device. It can be widely applied to devices in general.

[0033]

As described above, according to the present invention, the halved main body case of the ignition device can be easily and reliably fixed by being sandwiched by the elastic hooks of the bottom plate, and the degree of freedom in design and structure can be improved. Can be increased, and it is difficult for general users to disassemble,
If a special jig is used, the bottom plate can be detached and disassembled.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view in rear view of an ignition rod according to an example of an embodiment of the present invention;

FIG. 2 is a top view of the ignition rod according to the embodiment of the present invention;

FIG. 3 is a vertical cross-sectional view of the ignition rod according to the embodiment of the present invention, as viewed from a side.

FIG. 4 is an exploded perspective view showing an assembling structure of a main body case of the ignition rod according to the embodiment of the present invention;

FIG. 5 is an exploded cross-sectional view (a) and a bottom view (b) showing a state before assembling the rear part of the main body case of the ignition rod according to the embodiment of the present invention;

FIG. 6 is a side view sectional view (a) and a bottom view (b) showing a state before assembling the rear part of the main body case and the bottom plate of the ignition rod according to the embodiment of the present invention, and a bottom view (c) of the bottom plate;

FIG. 7 is a side view sectional view (a) and a bottom view (b) showing a state after assembling the rear part of the main body case and the bottom plate of the ignition rod according to the embodiment of the present invention;

FIGS. 8A and 8B are views for explaining the operation of assembling the main body case of the ignition rod with the bottom plate according to the embodiment of the present invention;

FIGS. 9A and 9B are diagrams illustrating an operation of removing a bottom plate of a main body case of the ignition rod using a jig according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ignition rod 2 Main case 2a Front case 2b Back case 4 Bottom plate 10 Gas tank 20 Valve mechanism 30 Injection nozzle 40 Piezoelectric unit (Ignition mechanism) 61, 62, 63 Holes for hook locking 61a, 62a, 63a Notch 71, 72 , 73 Elastic hook 71a, 72a, 73a Claw 71b, 72b, 73b Rib 81, 82, 83 Jig insertion hole 90 Jig

Claims (5)

[Claims] 1. An assembling structure of an ignition device for integrally assembling a split main body case, wherein a space recessed in a stepped shape with respect to a peripheral portion is formed in an outer end surface of a bottom portion of the main body case, and an inner side of the space is formed. Holes are provided at a plurality of locations including two locations across the split surface of the hook, and a bottom plate provided with elastic hooks engaged with the respective holes for hook engagement is pushed into the space, and the elastic hooks are provided. To the above hole,
An assembling structure for an ignition device, characterized in that the main body case is sandwiched and fixed by the bottom plate. 2. A gas tank for storing a fuel gas, a valve mechanism for opening and closing a gas passage from the gas tank, and a fuel arranged at a front end in a longitudinal direction of the apparatus and supplied from the valve mechanism through an extension passage. And a rod-shaped ignition device having an ignition mechanism for igniting the fuel gas injected from the injection nozzle. In addition to forming a space depressed in a step-like manner with respect to the portion, hook locking holes are provided at a plurality of locations including two locations sandwiching the split surface inside the space, and the hook locking holes are connected to the holes. A bottom plate provided with an elastic hook to be fitted is pushed into the space, the elastic hook is locked in the hole, and the main body case is sandwiched and fixed by the bottom plate. Device assembly structure. 3. The hook locking holes are provided at two positions across the split surface and at one position on the split surface, and three elastic hooks are provided on the bottom plate so as to engage with the holes. Claim 1
Or the assembling structure of the ignition device according to 2. 4. The elastic hook is disposed along a peripheral edge of the bottom plate, and stands upright in a pushing direction of the bottom plate. 4. An assembling structure for an ignition device according to claim 1, wherein a jig insertion hole is provided for inserting a jig for pushing each elastic hook from inside to remove said claw portion from said hole of said main body case. . 5. The jig insertion hole is provided inside each elastic hook to form a hole surface flush with the base inner surface of the hook leg, and the elastic hook is provided with the hook leg. A rib that tapers toward the claw portion is provided between the base inner surface and the claw portion, and the hook locking hole has a portion for locking the claw portion of the elastic hook. The assembly structure for an ignition device according to claim 4, wherein a notch for releasing the rib is provided.