JP3114841B2 - Ignition rod safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition rod which emits flame from a rod-like tip by an ignition operation of an operation member.
The present invention generally relates to a safety device for an ignition rod in which a lock member is locked to an operation member to perform ignition lock, while the lock is released to release the ignition lock to enable ignition when used.

[0002]

2. Description of the Related Art An ignition rod is a convenient one that can be easily ignited by pushing a trigger-like operating member, but a child such as a child who does not know how to use it properly can safely ignite. This is not preferred.

[0003] In order to prevent accidental ignition by a person who does not know the proper use or to prevent accidental ignition, an ignition rod with improved safety has been demanded. Ignition rods with various safety devices have been proposed.

[0004] For example, Japanese Utility Model Application Laid-Open No. Sho 62-5565,
All of the safety devices for an ignition rod disclosed in -122828 and U.S. Pat.No. 5,199,865 are designed to manually move a lock member for preventing operation of an operation member between a lock position and a release position. After the ignition is moved from the lock position to the release position and ignited, the safety device remains released unless it is manually returned to the lock position.

In the above conventional ignition rod, after the lock member is moved to the release position to perform ignition, if the lock member is left forgotten to return the lock member from the release position to the lock position, the lock member becomes a safety device. Therefore, there is a problem that the above-mentioned careless ignition can be performed without performing the lock function.

In a gas lighter, for example,
As disclosed in JP-A-5-256448 and U.S. Pat. No. 4,832,596, a lock member that disables the operation of a part of an operating lever that is pressed down when igniting a gas lighter is deformed or slid. When the lock member is moved to the lockable position in response to the operation and the operating lever is pushed down after manually operating the lock member to the release position, or the hand is released from the gas lighter. At this time, a structure has been proposed in which a locked state is returned by a spring so that the locked state is not left.

[0007]

However, the safety mechanism of the gas lighter described above cannot be applied to an ignition rod having a different structure as it is, but the structure of the ignition rod body and an operating member for performing an operation for ignition. In terms of the shape, the relationship with the protective frame formed around the operation member, etc., the ignition lock is normally performed separately for the ignition rod, and the ignition lock is released by the operation related to the operation of the operation member separately during ignition. On the other hand, there is a demand for achieving a mechanism that allows the operating member to automatically return to the locked state following the return movement of the operating member with a simple structure after ignition.

In view of the above, the present invention is applied to an ignition rod adapted to perform ignition by operating an operation member, and provides an ignition rod safety device capable of performing ignition lock, unlocking, and automatic return. The purpose is to do so.

[0009]

In order to achieve the above object, a safety device for an ignition rod according to the present invention comprises an operating part of an operating member for performing an ignition operation by driving a valve mechanism and a piezoelectric unit. And a lock member having a locking portion that interferes with a part of the operation member and locks the ignition operation of the operation member is installed so as to be movable in a direction intersecting with the movement direction of the operation member. And an urging member for urging the lock member in a locking direction, further comprising: a lock release unit capable of operating the lock member to move the lock member in a direction against the urging force of the urging member. Wherein the lock release portion is disposed so as to protrude at a position facing the operation portion of the operation member, and the operation portion of the operation member in a state where the ignition lock is released by operating the lock release portion of the lock member. To operate the ignition, It is characterized in that the return automatically returns to the locked state the lock member with the movement.

Further, the lock member is provided in a substantially U-shape,
It is preferable that one end is provided on the locking portion and the other end is provided on the unlocking portion, and the locking portion is locked in a locking hole of the operation member so that the operation member is in an immovable locked state. It is.

[0011]

According to the ignition rod safety device of the present invention, when the lock member is in the lock position where it is protruded by the urging member, the locking portion interferes with the operating member, and Movement is blocked and ignition lock is performed. When the unlocking portion of the lock member is operated to the release position in the immersion direction against the biasing member, the locking portion also moves in the immersion direction, and the interference between the locking portion and the operating member is released, thereby causing the operation. The member can be moved, and the fuel gas ejected by the operation of the operation member is ignited. When the operation of the operating member and the locking member is released, the locking member of the locking member moves to a position where a part of the operating member interferes with the biasing member as the operating member returns, and the ignition lock is released. It automatically returns to the state, and when not in use, the ignition operation of the operation member is always disabled to prevent inadvertent ignition, so that an extremely safe ignition rod can be realized.

Further, since the direction of the unlocking operation of the lock member and the direction of the ignition operation of the operating member are different, it is difficult for a person who does not know how to properly use the lock to release the lock, and further, careless ignition is prevented. .

[0013]

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

<Embodiment 1> FIG. 1 is a sectional view of an essential part of an ignition rod according to the present embodiment, FIG. 2 is an exploded view of the essential part, and FIG. 3 is a sectional view of an operating state.

The ignition rod 1 includes a main body 2 and an extension 3 (a tip portion is not shown) extending in a rod shape from the main body 2. The main body 2 has a case portion formed by a tank cover 5 on the base end side and an intermediate case 6 in front of the tank cover 5. The tank cover 5 is formed of a synthetic resin in the shape of a bottomed cylinder having an open front, and the intermediate case 6 is formed in a substantially centrally longitudinally divided manner, one of which is shown in FIG.

A gas tank 7 formed of a synthetic resin for accommodating a high-pressure gas such as butane gas is installed in a tank cover 5 at the base end side of the main body 2. A valve mechanism 8 for opening and closing the supply is provided. The valve mechanism 8 includes the gas tank 7.
Gas is supplied through a core 9 inserted in the inside of the inside, and a nozzle member 10 is interposed in the gas passage. One end of a rotary lever 14 for opening the nozzle member 10 is locked to the tip of the nozzle member 10, and a passage is opened by the forward movement of the nozzle member 10 to supply gas, and a valve mechanism is provided. The passage is closed by the retreat movement by the spring arranged in 8 and the supply of gas is stopped. The gas supply amount, that is, the size of the flame is adjusted by the rotation of a flame adjusting knob 13 connected to the adjusting sleeve 12 and projected to the outside.

Further, a shield packing 15 made of an elastic material is attached to the tip of the nozzle member 10. On the extension of the nozzle member 10, the shield packing 15
The sleeve member 16 is connected to one end of the connector pipe 17, and the other end of the connector pipe 17 is connected to one end of the gas pipe 18. The gas pipe 18 extends to the tip of the extension 3 and is connected to an ejection nozzle (not shown) to supply gas.

In the intermediate case 6 of the main body 2,
An operation member 20 (ignition lever) is slidably provided on the side of the valve mechanism 8 in parallel with the center line of the valve mechanism 8, and a piezoelectric member is provided between the operation member 20 and the gas tank 7. A unit 22 is provided.

The operating member 20 has a cylindrical portion 20b slidably supported by the intermediate case 6, and an operating portion 20a is provided diagonally at the tip of the cylindrical portion 20b. A locking hole 20c is opened on the side surface on the valve mechanism 8 side, and a projection 20d extending in the sliding direction is connected to the end. The protruding portion 20d is configured to be pushed down in conjunction with the end of the rotating lever 14 during the ignition movement, thereby rotating the same.

That is, the rotary lever 14 is formed in a substantially L-shape, is rotatably supported around a fulcrum at an intermediate portion, and is rotated by a projection 20d of the operating member 20. In addition, the nozzle member 10 of the valve mechanism 8 is moved so as to be pulled out by the rotation accompanying the ignition operation, and is opened to supply gas.

The piezoelectric unit 22 supplies a discharge voltage, and a sliding portion 22a that expands and contracts is fitted to a cylindrical portion 20b of the operating member 20, and the operating member 20
The slide portion 22a is immersed and moved in accordance with the retreat operation, thereby generating a discharge voltage. The lead wires 23 (two) connected to the electrodes of the piezoelectric unit 22
It is disposed so as to extend to the distal end portion, and is connected to a discharge nozzle (not shown) and a discharge electrode at the distal end portion.

The intermediate case 6 is provided with a protective frame 6a which surrounds the outside of the operation portion 18a of the operation member 18 while forming a space for inserting a finger. A connecting tube 6b extends from the base of the intermediate case 6, and the connecting tube 6b is connected to the gas tank 7, and the tank cover 5 is fitted to the outer peripheral portion thereof.

On the other hand, a lock member 25 and a biasing member 26 constituting a safety device for locking or releasing the ignition operation of the operation member 20 are provided for the ignition rod 1 having the above-described structure.

As shown in FIG. 2, the lock member 25 is formed in a substantially U-shape, and
Is mounted so as to be slidable in the axial direction, that is, in a direction substantially perpendicular to the moving direction of the operation member 20. Also,
One end of the urging member 26 is inserted into a concave portion 25a formed in the back of the lock member 25, and the other end of the urging member 26 abuts against the opposing inner wall of the intermediate case 6 and is contracted. Accordingly, the lock member 25 is urged in a direction (lock direction) that protrudes outward from the intermediate case 26.

The lock member 25 is provided with one end of the U-shape as a lock portion 25b and the other end as a lock release portion 25c, and the lock portion 25b and the lock release portion 25c are Through the windows 6c and 6d opened in
It is provided so that it can appear in 6a.

The locking portion 25b is connected to the operating member 20.
In the locked state shown in FIG. 1, even if the operation member 20 is moved for ignition, that is, even if the operation member 20 is pushed down, the window portion 6c Is in contact with and locked by the locking portion 25b.
Further, the lock release portion 25c is connected to the operation portion 20a of the operation member 20.
The lock member 25 is moved in the immersion direction against the urging force of the urging member 26 by the pushing operation of the unlocking portion 25c.

According to the relationship between the operation member 20 and the lock member 25, the lock release portion 25c of the lock member 25 and the operation member
The ignition operation can be performed by sliding the operation member 20 in a state where the ignition lock is released by simultaneously operating the 20 operation units 20a and 20,
The lock member 25 is configured to automatically return to the ignition locked state with the return movement of the operation member 20.

The operation of the above-described safety device for the ignition rod 1 will be described. First, as shown in FIG. 1, when the lock member 25 is in a lock position where it is protruded from the intermediate case 6 by the urging member 26 in a normal state (when not in use), the locking portion 25b is used to lock the operation member 20. The lock release portion 25c is inserted into the hole 20c, and also protrudes into the protection frame 6a from the window portion 6d. If the operation member 20 is to be pushed in this state, it cannot be pushed due to the engagement of the lock member 25 with the engagement portion 25b, and the ignition operation cannot be performed. Therefore, even if a person who does not know how to use the ignition rod 1 operates the ignition rod 1, it is safe without ignition.

Next, when it is desired to use the ignition rod 1, FIG.
As shown in (A), the lock release portion 2 of the lock member 25
5c, and release the lock release portion 25 as shown in FIG.
The ignition operation is performed so that the operation member 20 is pushed in while the c is pushed. Urging the lock release portion 25c
When pressed against 26, locking part 25b is
Also move into the intermediate case 6, the locking portion 25b is disengaged from the locking hole 20c of the operating member 20, and the operating member 20 can be pushed in by releasing the lock state.

When the operation member 20 is ignited, the nozzle member 10 is pulled out via the rotating lever 14 with the movement of the operation member 20, and the valve mechanism 8 is opened to operate the gas pipe.
Supply gas to the jet nozzle through 18. Further, a discharge voltage (AC voltage) is generated from the piezoelectric unit 22 in accordance with the operation of the operation member 20, and is applied between the discharge electrode of the extension portion 3 and the ejection nozzle to ignite the ejected gas.

When the user releases the operating member 20 to stop using it, the operating member 20 protrudes and returns to the initial position by the elastic force of the spring in the piezoelectric unit 22.
The locking hole of the operating member 20 is located at the position of the locking portion 25b of the locking member 25.
When the position 20c moves, the locking portion 25b is
The lock member 25 is moved by the urging force of the urging member 26 so as to enter the inside of c, and the unlocking portion 25c is protruded near the operating portion 20a and automatically returns to the locked state where the pushing of the operating member 20 is prevented. Things.

<Embodiment 2> FIG. 4 shows an ignition rod provided with the safety device of this embodiment, which is a modification of the lock member. The basic structure of the valve mechanism 8, the operating member 20 and the like of the ignition rod 1 of this embodiment is the same as that of the previous embodiment, and the same structures are denoted by the same reference numerals and description thereof will be omitted.

The lock member 27 of this embodiment has a recess 27a at the back portion into which one end of the urging member 26 is inserted, as in the previous embodiment, and engages with the operation member 20 through a window 6c opened in the intermediate case 6. It has a locking portion 27b that can be locked in the stop hole 20c, and a lock releasing portion 27c that can protrude near the operating portion 20a of the operating member 20 through a window 6d opened in the intermediate case 6.

The end of the unlocking portion 27c is further extended, and this extended portion is swingably supported by the pin 28 with respect to the intermediate case 6. The locking portion 27b and the unlocking portion 27c are urged in a direction (locking direction) that protrudes outside the intermediate case 26.

The operation of the ignition lock and the lock release in the safety device of the present embodiment is the same as that of the previous example, and the lock release portion 27c of the lock member 27 is changed from the ignition lock state of FIG. Pressing the lock to release the lock, and then pushing the operating member 20 to perform the ignition operation, releasing the operating member 20 to return it, then releasing the unlocking operation of the lock member 27 automatically locks the lock. It returns to the state.

The end surface of the locking portion 27b of the lock member 27 is formed into a curved surface, and when the unlocking operation of the lock member 27 is released before the operation member 20 returns after the ignition operation, the lock member 27b is released. The locking portion 27b of the locking member 27 first projects to the locking position, but the tip of the operating portion 20a of the operating member 20 comes into contact with the curved surface of the locking portion 27b, and the locking member 27 is locked. Is configured to automatically return to the locked state by passing while swinging so as to be immersed.

[0037]

According to the safety device for an ignition rod of the present invention as described above, a lock member for locking an ignition by interfering with a part of an operation member for performing an ignition operation is provided so as to be movable. An unlocking portion of the member is provided so as to protrude near the operating portion, and the unlocking portion is unlocked by operating the unlocking portion in a direction different from the ignition operation of the operating member, and the locking member is locked by the biasing member. By biasing in the direction, the unlocking of the operating member involves two operations in different directions, making it difficult for a person who does not know how to properly use the lock to release the lock, and preventing inadvertent ignition. In addition, the lock member automatically returns the operating member to the locked state during the return movement, so that the operating member is not left in the unlocked state. To ensure state reliability can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of an ignition rod provided with a safety device according to a first embodiment of the present invention in a longitudinal section.

FIG. 2 is an exploded perspective view of an intermediate case, an operation member, and a lock member in FIG.

FIG. 3 is a sectional side view of a main part showing an operation state of FIG. 1;

FIG. 4 is a sectional side view of a main part of an ignition rod provided with a safety device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ignition rod 2 Main part 6 Intermediate case 7 Gas tank 8 Valve mechanism 20 Operation member 20a Operation part 20c Lock hole 22 Piezoelectric unit 25,27 Lock member 25b, 27b Lock part 25c, 27c Lock release part

Claims (2)

(57) [Claims] 1. A rod-shaped tip portion having an ejection nozzle for ejecting gas, a main body portion having a gas tank, a valve mechanism for opening and closing gas supply from the gas tank to the ejection nozzle, and a piezoelectric member for generating a discharge voltage for ignition. A unit is installed, and an operating member that drives the valve mechanism and the piezoelectric unit to perform an ignition operation is slidably installed, and an operating portion of the operating member is disposed so as to be exposed outside the main body. In the ignition rod, a lock member having a locking portion that interferes with a part of the operation member and locks the ignition operation of the operation member is installed so as to be movable in a direction intersecting with the movement direction of the operation member. ,
An urging member for urging the lock member in a lock direction is provided, and the lock member further includes a lock release part capable of operating the lock member in a direction opposing the urging force of the urging member. The unlocking portion is provided so as to protrude at a position facing the operating portion of the operating member, and operates the operating portion of the operating member in a state where the ignition lock is released by operating the unlocking portion of the locking member. An ignition rod safety device characterized in that the ignition member performs an ignition operation and the lock member automatically returns to the locked state with the return movement of the operation member. 2. The lock member is provided in a substantially U-shape,
One end is provided on a locking portion and the other end is provided on a lock release portion, and the locking portion is locked in a locking hole of the operation member to lock the operation member immovably. Item 2. The safety device for an ignition rod according to Item 1.