Ignition tool

Abstract

To provide an ignition tool which is easy to operate and which can secure high safety with a simple structure.SOLUTION: An ignition tool includes: a body case; a combustion cylinder case installed at the body case in a rotatable manner; and an ignition button installed at the body case in a manner movable in the linear direction. At the ignition button, an ignition button side engagement part is provided. At a rotary shaft of the combustion cylinder case, a rotary shaft side engagement part is provided, and with the ignition button side engagement part, the rotary shaft side engagement part is engaged. In a non-use state, the movement of the ignition button is restricted by the rotary shaft side engagement part and the ignition button side engagement part, and in the case where the ignition cylinder case is rotated from the non-use state and is brought into a use state, the movement restriction of the ignition button by the rotary shaft side engagement part and the ignition button side engagement part is released, and an ignition operation by the ignition button becomes possible.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a lighting device, and particularly to a device devised so that it can be easily operated with a simple configuration and high safety can be ensured.

Background Art

[0002] As those disclosing conventional lighting devices, for example, there are Patent Documents 1 to 4. The foldable lighter described in Patent Document 1 includes a main body having a fuel tank, a piezoelectric unit, and an operation member, and a rotatable arm portion rotatable with respect to the main body. The foldable lighter is provided with a locking mechanism. When the opening angle of the rotatable arm portion is equal to or less than a predetermined angle by the locking mechanism, pushing in of the operation member is blocked. The locking mechanism has a thick portion provided on a part of a cylindrical wall provided concentrically around the rotation axis of the base of the rotatable arm portion and a hook portion provided on the operation member. When the opening angle of the rotatable arm portion is larger than the predetermined angle, the thick portion and the hook portion do not interfere with each other and it is possible to push in the operation member to ignite. However, when the opening angle of the rotatable arm portion is equal to or less than the predetermined angle, the thick portion and the hook portion interfere with each other and it becomes impossible to push in the operation member.

[0003] The multi-mode lighter described in Patent Document 2 has a wand assembly rotatably installed in a housing, and there is a cam rotated together with the wand assembly. The multi-mode lighter is provided with a cam follower that operates in conjunction with a trigger for ignition operation and is pressed against the cam. The cam and the cam follower are configured such that the ignition trigger cannot be pushed in unless the wand assembly is opened by a predetermined angle or more.

[0004] The ignition device described in Patent Document 3 has a flame nozzle rod portion with a flame nozzle provided at its tip rotatably installed with respect to the main body. Normally, the tip of the lock lever is pressed against the rotation base, and the rotation of the flame nozzle rod portion is restricted by frictional force. However, when the lock lever is operated, the restriction on the rotation of the flame nozzle rod portion is released, and the locking portion of the lock lever is engaged with the ignition lever to restrict the ignition operation by the ignition lever.

[0005] In the folding safety lighter of Patent Document 4, an extension tube is rotatably installed in a housing where a push button is installed. When not in use, the folding safety lighter is in a folded state, and the extension tube covers and hides the push button. When in use, the extension tube is rotated to expose the push button so that the ignition operation becomes possible.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0007] According to the above conventional configuration, there are the following problems. In the folding lighter of Patent Document 1, the configurations of parts such as the cylindrical wall and hook around the rotation axis are complicated. In the multi-mode lighter of Patent Document 2, a configuration using a cam is adopted, and the configuration is complicated. In the ignition device of Patent Document 3, the operation of the lock lever is required, and the operation is complicated. In the foldable safety lighter of Patent Document 4, even when the user's hand is close to the tip of the extension tube, the ignition operation is possible, but it cannot be said that safety is surely ensured.

[0008] The present invention has been made based on such points, and an object thereof is to provide an ignition device that can be easily operated with a simple configuration and ensures high safety.

Means for Solving the Problems

[0009] The ignition device according to claim 1 of the present invention for achieving the above object includes a main body case, a combustion cylinder case rotatably installed in the main body case, and an ignition button linearly movably installed in the main body case. The ignition button is provided with an engagement portion on the ignition button side, and the rotation axis of the combustion cylinder case is provided with an engagement portion on the rotation axis side. The engagement portion on the rotation axis side is engaged with the engagement portion on the ignition button side. In the non-use state, the movement of the ignition button is restricted by the engagement portion on the rotation axis side and the engagement portion on the ignition button side. When the combustion cylinder case is rotated from the non-use state to the use state, the restriction on the movement of the ignition button by the engagement portion on the rotation axis side and the engagement portion on the ignition button side is released, and the ignition operation by the ignition button becomes possible. Further, the ignition device according to claim 2 is the ignition device according to claim 1, wherein one of the engagement portion on the rotation axis side and the engagement portion on the ignition button side is a linear groove, and the other of the engagement portion on the rotation axis side and the engagement portion on the ignition button side is a protrusion sized to be accommodated in a state where a space is provided with respect to the linear groove. Further, the ignition device according to claim 3 is the ignition device according to claim 2, wherein the linear groove is a single groove extending from the position of the engagement portion on the ignition button side at the time of non-use to the outer peripheral side of the rotation axis. Further, the ignition device according to claim 4 is the ignition device according to claim 2, characterized in that there are a plurality of the linear grooves, and each of the grooves on the straight line extends radially from the position of the ignition button side engaging portion in the non-use state to the outer peripheral side of the rotation shaft. Further, the ignition device according to claim 5 is the ignition device according to claim 4, characterized in that two orthogonal linear grooves are provided.

Advantages of the Invention

[0010] As described above, according to the ignition device according to claim 1 of the present invention, it includes a main body case, a combustion cylinder case rotatably installed in the main body case, and an ignition button linearly movably installed in the main body case. An ignition button side engaging portion is provided on the ignition button, a rotation shaft side engaging portion is provided on the rotation shaft of the combustion cylinder case, the rotation shaft side engaging portion is engaged with the ignition button side engaging portion, and in the non-use state, the movement of the ignition button is restricted by the rotation shaft side engaging portion and the ignition button side engaging portion. When the combustion cylinder case is rotated from the non-use state to the use state, the restriction on the movement of the ignition button by the rotation shaft side engaging portion and the ignition button side engaging portion is released, and the ignition operation by the ignition button becomes possible. Therefore, the operation is easy with a simple configuration, and high safety can be ensured. Further, according to the ignition device according to claim 2, in the ignition device according to claim 1, one of the rotation shaft side engaging portion and the ignition button side engaging portion is a linear groove, and the other of the rotation shaft side engaging portion and the ignition button side engaging portion is a protrusion sized to be accommodated in a state where a space is provided with respect to the linear groove. Therefore, a simpler configuration can be achieved. Further, according to the ignition device according to claim 3, in the ignition device according to claim 2, the linear groove is a single groove extending from the position of the ignition button side engaging portion in the non-use state to the outer peripheral side of the rotation shaft. Therefore, a simpler configuration can be achieved. Also, according to the ignition device according to claim 4, in the ignition device according to claim 2, there are a plurality of the linear grooves, and each of the grooves on the straight line extends radially from the position of the ignition button side engaging portion in the non-use state to the outer peripheral side of the rotation shaft. Therefore, the angle of the combustion cylinder case that can be brought into a use state with a simple configuration can be increased. Also, according to the ignition device according to claim 5, in the ignition device according to claim 4, since two orthogonally arranged linear grooves are provided, a simpler configuration can be achieved.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0012] Hereinafter, a first embodiment of the present invention will be described with reference to Figs. 1 to 5. As shown in Figs. 1 to 3, the ignition device 1 according to this first embodiment has a main body case 3. As shown in Fig. 2, a fuel tank 5 is installed in the main body case 3. The fuel tank 5 is filled with fuel 7. A nozzle 9 is installed above the fuel tank 5 in Fig. 2. A valve 11 is installed below the nozzle 9 in Fig. 2. A valve 13 is installed below the valve 11 in Fig. 2.

[0013] A piezoelectric device 15 is installed inside the main body case 3 and on the right side of the fuel tank 5 in Fig. 2. A piezoelectric device switch 17 is provided above the piezoelectric device 15 in Fig. 2. The piezoelectric device switch 17 is constantly biased upward in Fig. 2 by an elastic member (not shown) inside the piezoelectric device 15, but can be pushed downward in Fig. 2 against the elastic force of the elastic member (not shown). When the piezoelectric device switch 17 is pushed down, the piezoelectric device 15 can generate a high voltage.

[0014] Above the piezoelectric device switch 17 in FIG. 2, a firing button 21 is installed so as to be movable in the vertical direction in FIG. 2 with respect to the main body case 3. The lower side of the firing button 21 in FIG. 2 is in contact with the tip (upper end in FIG. 2) of the piezoelectric device switch 17, and the piezoelectric device switch 17 can be pushed down by the firing button 21. For example, as shown in FIGS. 3(a) and 3(b), an engaging convex portion 23 on the firing button side is formed on the left side in FIG. 3(a) of the firing button 21. The engaging convex portion 23 on the firing button side is a convex portion on a cylinder.

[0015] A gas cooker 25 is rotatably installed in the main body case 3. As shown in FIG. 3, when the firing button 21 is pushed down, the right end side of the gas cooker 25 in FIG. 3 is biased downward in FIG. 2, and the left end side of the gas cooker 25 in FIG. 3 is pushed upward. The left end side of the gas cooker 25 in FIG. 3 is in contact with the lower side of the nozzle 9 in FIG. 3. When the firing button 21 is pushed down in FIG. 3, the valve 11 is pulled upward in FIG. 3 together with the nozzle 9, the valve 13 is opened, and the fuel 7 in the fuel tank 5 is discharged from the nozzle 9. When the firing button 21 is pushed upward in FIG. 3 through the piezoelectric device switch 17 by an elastic member (not shown) in the piezoelectric device 15 and becomes in a non-use state, the valve 13 is closed by an elastic member (not shown), and the discharge of the fuel 7 from the fuel tank 5 is stopped.

[0016] A combustion cylinder case 31 is rotatably installed on the upper left side of the main body case 3 in FIG. 2. A gas discharge member 33 is installed at the tip side (lower side in FIG. 2) of the combustion cylinder case 31. The gas discharge member 33 and the nozzle 9 are connected by a gas conduit 35 which is a flexible tube, and the gas 7 discharged from the nozzle 9 is discharged from the gas discharge member 33.

[0017] In addition, a discharge terminal 37 is installed near the gas discharge member 33. The discharge terminal 37 and the piezoelectric device 15 are electrically connected by a piezoelectric lead wire 39, and a high voltage generated by the piezoelectric device 15 generates a spark at the tip of the discharge terminal 37 to ignite and burn the gas 7 discharged from the gas discharge member 33.

[0018] For example, as shown in FIG. 2, a rotation shaft portion 41 is provided on the proximal end side (the upper side in FIG. 2) of the combustion cylinder case 31. The rotation shaft portion 41 penetrates through a through hole 43 provided in the main body case 3, and a flange portion 45 with a larger diameter is provided on the right side of the rotation shaft portion 41 in FIG. 2 so that the combustion cylinder case 31 does not fall off from the main body case 3.

[0019] For example, as shown in FIGS. 4(c) and 4(d), an ignition button operation restricting portion 51 is provided on the inner side (the right side in FIG. 4(c)) of the main body case 3 of the rotation shaft portion 41. A rotation shaft side engaging recess 53 opened to the ignition button 21 side (the right side in FIG. 4(c)) is formed in the ignition button operation restricting portion 51. For example, as shown in FIG. 4(d), the rotation shaft side engaging recess 53 is a linear groove extending from the position of the ignition button 21 when the ignition button side engaging convex portion 23 is not in use, which is substantially the rotation center of the rotation shaft portion 41, toward the outer peripheral side of the rotation shaft portion 41.

[0020] When the ignition device 1 as shown in FIGS. 3(a) and 5(a) is not in use, the ignition button side engaging convex portion 23 is located at the end side of the rotation shaft side engaging recess 53, and the downward pressing operation of the ignition button 21 in the lower side of FIG. 5(a) is restricted. When the ignition device 1 as shown in FIGS. 3(b) and 5(b) is in use, the combustion cylinder case 31 is rotated 180 degrees upward from the non-use state shown in FIG. 5(a), the rotation shaft side engaging recess 53 is directed downward in FIG. 5(b), and there is nothing to prevent the downward movement of the ignition button side engaging convex portion 23 in the lower side of FIG. 5(b), so that the downward pressing operation of the ignition button 21 as shown in FIG. 5(c) is possible.

[0021] Next, the operation according to this first embodiment will be described. First, in the non-use state of the ignition device 1, as shown in FIGS. 1(a) and 2, the tip side of the combustion cylinder case 31 is oriented downward. In this state, as shown in FIG. 5(a), the end of the rotation shaft side engaging recess 53 is located below the ignition button side engaging convex portion 23, and the pressing operation of the ignition button 21 is restricted.

[0022] To put the ignition device 1 in the use state, the combustion cylinder case 31 is rotated 180 degrees upward to the state shown in FIGS. 1(a) and 3(a). In this state, as shown in FIG. 5(b), the internal space of the rotation shaft side engaging recess 53 is located below the ignition button side engaging convex portion 23, and the pressing operation of the ignition button 21 is not restricted. Here, when the ignition button 21 is pressed to the state shown in FIGS. 3(b) and 5(c), the valve 13 is released by the gas torch 25, the fuel 7 in the fuel tank 5 is discharged from the gas discharge member 33, and the discharge by the piezoelectric device 15 is performed at the tip of the discharge terminal 37, and the combustion of the fuel 7 is started.

[0023] When the ignition button 21 is not pressed, the ignition button 21 returns by the elastic force of an elastic member (not shown), the valve 13 closes, the discharge of the fuel 7 from the fuel tank 5 stops, and the combustion of the fuel 7 at the tip side of the gas discharge portion 33 stops.

[0024] Next, the effects according to this first embodiment will be described. The ignition button 21 is provided with an engagement convex portion 23 on the ignition button side, and the rotation shaft portion 41 side of the combustion cylinder case 31 is provided with an engagement concave portion 53 on the rotation shaft side. In the non-use state, the movement of the ignition button 21 is restricted by the engagement concave portion 53 on the rotation shaft side and the engagement convex portion 23 on the ignition button side. When the combustion cylinder case 31 is rotated from the non-use state to the use state, the direction of the engagement concave portion 53 on the rotation shaft side changes, and the restriction on the movement of the ignition button 21 by the engagement convex portion 23 on the ignition button side is released, enabling the ignition operation by the ignition button 21. Therefore, the operation is easy with a simple configuration, and high safety can be ensured.

[0025] Also, since the engagement concave portion 53 on the rotation shaft side is a linear groove and the engagement convex portion 23 on the ignition button side is a substantially cylindrical protrusion, the configuration is simpler.

[0026] Hereinafter, with reference to FIG. 6, a second embodiment of the present invention will be described. The ignition device in this second embodiment has substantially the same configuration as the ignition device 1 in the above-described first embodiment. However, as shown in FIG. 6(a), an engagement concave portion 101 on the rotation shaft side that is directed obliquely upward (for example, a direction inclined 30 degrees from the vertical) is formed in the non-use state. Therefore, in the case of the above-described first embodiment, the combustion cylinder case 31 was rotated 180 degrees from the non-use state to the use state. In this second embodiment, even if the combustion cylinder case 31 is not made vertical (for example, if it is rotated 150 degrees), it can be brought into the use state as shown in FIG. 6(b).

[0027] Also in the case of this second embodiment, the operation is easy with a simple configuration, and high safety can be ensured.

[0028] Hereinafter, with reference to FIG. 7, a third embodiment of the present invention will be described. The ignition device in this third embodiment has substantially the same configuration as the ignition device 1 in the above-described first embodiment. However, as shown in Fig. 7(a), linear rotation axis side engaging recesses 201 and 203 are formed so as to be orthogonal to each other. Therefore, not only the state in which the combustion cylinder case 31 as shown in Fig. 7(b) is vertically upward, but also the state in which it is horizontally oriented as shown in Fig. 7(c) can be used as the usage state.

[0029] Also in the case of this third embodiment, the operation is easy with a simple configuration and high safety can be ensured. In addition, the orientation of the combustion cylinder case 31 in the usage state can be arbitrarily selected from two types: the vertical direction and the horizontal direction.

[0030] Note that the present invention is not limited to the first embodiment to the second embodiment. Various cases can be considered for the number, shape, angle, etc. of the rotation axis side engaging recesses. Also, various cases can be considered for the angle and number of the orientations of the combustion cylinder case in the usable state. In addition, the illustrated configuration is an example, and various cases can be considered.

Industrial Applicability

[0031] The present invention relates to an ignition device, and particularly to an invention devised so that the operation is easy with a simple configuration and high safety can be ensured. For example, it is suitable for a lighter for smoking.

Explanation of Reference Numerals

[0032] 1 Ignition device 3 Main body case 21 Ignition button 23 Ignition button side engaging convex portion 31 Combustion cylinder case 41 Rotation axis portion 53 Rotation axis side engaging recess

Claims

1. A main body case, a combustion cylinder case rotatably installed on the main body case, a ignition button linearly movably installed on the main body case, characterized by comprising: the ignition button is provided with an engagement portion on the ignition button side, the rotation axis of the combustion cylinder case is provided with an engagement portion on the rotation axis side, the engagement portion on the rotation axis side is engaged with the engagement portion on the ignition button side, in a non-use state, the movement of the ignition button is restricted by the engagement portion on the rotation axis side and the engagement portion on the ignition button side, when the combustion cylinder case is rotated from the non-use state to the use state, the restriction on the movement of the ignition button by the engagement portion on the rotation axis side and the engagement portion on the ignition button side is released, and the ignition operation by the ignition button becomes possible. An ignition device characterized by this.

2. In the ignition device according to Claim 1, one of the engagement portion on the rotation axis side and the engagement portion on the ignition button side is a linear groove, the other of the engagement portion on the rotation axis side and the engagement portion on the ignition button side is a protrusion sized to be accommodated in a state where a space is provided with respect to the linear groove. An ignition device characterized by this.

3. In the ignition device according to Claim 2, the linear groove is a single groove extending from the position of the engagement portion on the ignition button side during non-use to the outer peripheral side of the rotation axis. An ignition device characterized by this.

4. In the ignition device according to Claim 2, there are a plurality of the linear grooves, and each of the linear grooves extends radially from the position of the engagement portion on the ignition button side during non-use to the outer peripheral side of the rotation axis. An ignition device characterized by this.

5. In the ignition device according to Claim 4, two orthogonal linear grooves are provided. An ignition device characterized by this.

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