JP2005077061A - Nozzle cap dropping-out preventive structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely prevent dropping-out of a nozzle cap attached to the upper part of an igniter by a deformation by falling impact or the like. <P>SOLUTION: In the attachment of the nozzle cap 6 covering the circumferential upper part of an ignition part 3 to the upper part of an equipment body 2, the equipment body 2 has first engagement receiving parts 26 on the outer surfaces of struts 23 for supporting a file wheel 51, and second engagement receiving parts 27 and receiving part 28 for regulating the rotating range of a flame length adjusting member 32 in the rear end lower parts of the struts 23. The nozzle cap 6 has locking first engagement parts 66 engageable with the first engagement receiving parts 26 on both side walls 61, expansion arresting second engagement parts 67 to be engaged with the second engagement receiving parts 27 from the inside, which are provided on the rear lower ends of both the side walls, engagingly locking parts 68 to be engagingly locked with the receiving part 28, which are bent inward from the front parts of both the side walls, and an expansion arresting fitting part 69 to be engagingly locked between side wheels 52, which are extended from the top surface rear part to the file wheel 51. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a nozzle cap mounted on the top of an igniter such as a lighter, and more particularly to a structure for preventing a nozzle cap from being removed when an impact is applied.

  In general, an igniter such as a gas lighter ignites and burns fuel gas ejected from an igniting portion of an ejection nozzle by an ignition mechanism, and also serves as internal protection for the ejection nozzle and flame adjustment ring in the combustion. A nozzle cap that covers the periphery of the ejection nozzle is attached to the upper part of the instrument main body in order to obtain a stable combustion and to prevent the heat of the combustion flame from being transmitted to the instrument main body.

  The nozzle cap is formed by pressing a metal plate and attached to the upper part of the instrument body.However, the nozzle cap may be deformed and removed from the instrument body due to the action of an external impact such as dropping. The structure which prevents is attached (for example, refer patent document 1).

The structure of patent document 1 as an example is demonstrated based on FIG. The attachment structure of the nozzle cap 106 to the instrument body 102 in the igniter 100 is as follows. Struts 123 extending upward are projectingly provided on both sides of the upper part of the instrument main body 102, and concave first engagement receiving portions 126 are provided on the side surfaces of the struts 123. On the other hand, the nozzle cap 106 is formed by pressing a metal plate, and side walls on both sides with respect to the front surface portion are continuously provided with elasticity inside, and a first engagement portion 166 formed to protrude inwardly on the side wall is provided. Prepare. When the nozzle cap 106 is attached to the instrument main body 102 from above, the first engagement portion 166 is inserted and engaged with the first engagement receiving portion 126 of the column 123, and the upper end of the first engagement portion 166 is The nozzle cap 106 is prevented from coming off upward by engaging with the upper end of the recess of the first engagement receiving portion 126. In addition, rear side edges of both side walls of the nozzle cap 106 are bent inward, and a second engagement portion 167 is formed at the lower end thereof so as to protrude downward. The second engagement portion 167 is engaged with the second engagement receiving portion 127 at the inner edge of the upper end of the instrument main body 102 to prevent the nozzle cap 106 from being expanded outwardly from the side wall. A structure is employed that prevents the cap 106 from coming off due to deformation due to external impact.
JP-A-11-166726

  In the above-described nozzle cap mounting structure in the igniter, the nozzle cap needs to have a strength that does not easily deform against the external force applied to the nozzle cap. Thus, when sufficient strength cannot be imparted to the nozzle cap, the nozzle cap may be deformed and removed depending on the direction and number of external forces applied.

  In addition, when the nozzle cap is painted, the surface becomes smooth by painting and tends to come off more easily than an unpainted product.

  Therefore, in view of this point, an object of the present invention is to provide a nozzle cap removal prevention structure to which a structure that more reliably prevents the nozzle cap from coming off from the instrument body due to deformation of the nozzle cap is added.

The nozzle cap removal prevention structure of the present invention includes an ignition part having a nozzle for jetting gas and a flame length adjusting member at an upper part of an apparatus main body for storing fuel gas, and an operating lever for opening and closing the jet of gas from the nozzle. An ignition mechanism having a horizontal vehicle on both sides of the file car and an ignition mechanism for igniting the ejected gas, and attached with a nozzle cap covering the periphery of the ignition part of the instrument body,
The instrument body protrudes upward and is formed on an outer surface of a column supporting the file wheel, a second engagement receiving unit installed at a lower rear end of the column, A receiving part that regulates the rotation range of the lever part of the flame length adjusting member,
The nozzle cap protrudes inwardly on both side walls and can be engaged with the first engagement receiving portion of the support column, and the second cap protrudes downward at the rear lower ends of the side walls. A second engaging portion for preventing expansion from engaging with the engaging receiving portion from the inside; a locking portion that is bent inward at the front portion of both side walls and that can be locked to the receiving portion from the front; A rear portion is provided with an expansion preventing insertion portion that extends in the direction of the file wheel and protrudes between the side wheels.

  According to the nozzle cap detachment prevention structure of the present invention as described above, the engaging portions disposed on the side portion and the rear portion of the nozzle cap engage with the corresponding portions of the instrument body, and an impact is applied. Only when the locking part and the sandwiching part are locked to each part of the instrument body to prevent the deformation of the nozzle cap, it is possible to effectively prevent the nozzle cap from being removed, and by dropping impact etc. Even when a deformation force acts on the nozzle cap, a firm function of preventing the nozzle cap from coming off can be obtained.

  In particular, due to the design of the igniter, even when the nozzle cap strength cannot be secured sufficiently, the nozzle cap can be prevented from being deformed by the engagement / locking structure at multiple locations. Even if it is easy, the nozzle cap is difficult to deform due to an external force, and there is an effect that it is not easily removed. In addition, even with a nozzle cap that has been coated, the engaging portion, the locking portion, and the like are not easily removed, and there is an effect that the nozzle cap is not easily removed by an external force.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a perspective view showing an upper structure of an igniter having a nozzle cap removal preventing structure according to one embodiment, and FIG. 2 is a perspective view showing a separated state before mounting the nozzle cap of the igniter shown in FIG. In the following description, based on how the igniter is used, the left side in FIG. 1 is described as the front and the right side as the rear.

  The basic structure of the igniter 1 is the same as that of a conventionally known structure, and a nozzle for generating a flame by jetting the fuel gas to the front part at the upper part of the instrument body 2 for storing the fuel gas in the lower tank part. The ignition part 3 having 31 and a flame length adjusting member 32 is installed, and an operating lever 4 is provided extending from the front part to the rear part for raising and lowering the nozzle 31 of the ignition part 3 to open and close the gas ejection. Furthermore, a file-type ignition mechanism 5 is provided which is held by struts 23 projecting from both sides of the middle part of the upper part of the instrument body 2 and ignites the gas ejected from the nozzle 31. And the nozzle cap 6 which covers the side of the support | pillar 23 from the circumference | surroundings of the nozzle 31 of the said ignition part 3, ie, the front upper part of the instrument main body 2, is attached.

  The instrument body 2 is made of plastic and includes a tank portion for storing a fuel gas such as butane gas, and an intermediate case 21 is fitted to the upper portion thereof separately from the tank portion. A known valve mechanism (not shown) for controlling the amount of fuel gas that is stored is installed in the lid portion of the tank portion, and the nozzle 31 disposed at the center of the valve mechanism is an intermediate case of the instrument body 2. 21 protrudes upward from the upper surface of 21. The intermediate case 21 has a bottomed cylindrical portion (not shown) extending in the vertical direction for storing the ignition stone of the ignition mechanism 5 in the substantially center, and the intermediate case 21 is provided on both the left and right sides of the cylindrical portion. Standing wall-shaped support columns 23 are provided so as to project upward from the upper surface and face each other.

  A nozzle engaging portion 41 formed at one end of the operating lever 4 is engaged with the nozzle 31, and a gas jet from the nozzle 31 is linked to a lower outer peripheral portion of the nozzle 31 in conjunction with an internal valve mechanism. A flame length adjusting member 32 for adjusting the amount is provided.

  The nozzle cap 6 attached to the upper part of the intermediate case 21 so as to cover the sides of the left and right support columns 23 from the front upper part along the periphery of the nozzle 31, that is, the outer shape of the intermediate case 21, is formed by stamping press molding of a metal plate, It has side walls 61 on both sides that extend in parallel with the outer surface and have the same width as the instrument body 2, a curved front wall 62 that connects the side walls 61, and a top surface 63 that forms an upper surface. Both side walls 61 are given elasticity in the direction of narrowing inward, and are fitted and locked to the pillars 23 of the instrument body 2 from the outside.

  A top surface 63 serving as an upper surface of the nozzle cap 6 is bent inward from the upper ends of both side walls 61 and the front wall 62, and a circular crater 64 is provided above the nozzle 31 on the top surface 63. Is opened, and the crater 64 guides the flame upward. Further, the top surface 63 at the rear portion of the crater 64 is provided with elasticity so that a top surface gap 65 is provided at the center and can be expanded and deformed.

  The ignition mechanism 5 includes a cylindrical file wheel 51, a side wheel 52 having a larger outer diameter than the file wheel 51 fixed so as to rotate integrally on both sides of the file wheel 51, and a bottom peripheral surface of the file wheel 51. The ignition stone and the stone pushing spring are accommodated in the cylindrical portion of the intermediate case 21, and the ignition stone can move up and down in the vertical direction. . Rotating shafts 53 protrude from the center of both side surfaces of the horizontal wheel 52, and the rotating shafts 53 on both sides are respectively inserted into bearing holes 24 opened in the upper portions of the left and right columns 23 of the intermediate case 21, and are rotatably supported. ing.

  The actuating lever 4 extends between the columns 23 and extends on the intermediate case 21 of the instrument body 2 in the front-rear direction. The operating lever 4 is made of synthetic resin, and has a nozzle engaging portion 41 at one end and a pressing portion 42 at the upper surface of the other end. The nozzle engaging portion 41 has a slit-like groove that engages the tip neck portion of the nozzle 31 from the front end.

  Next, the structure for preventing the nozzle cap 6 from coming off will be described. The instrument body 2 includes a first engagement receiving portion 26 formed on the outer surface of the support post 23, a second engagement receiving portion 27 installed at the lower rear end of the support post 23, and a lever of the flame length adjusting member 32. And a receiving portion 28 for restricting the rotation range of the portion 32a. On the other hand, the nozzle cap 6 protrudes inwardly on the side walls 61 and is attached to the first engagement portion 66 for retaining the first engagement receiving portion 26 of the support column 23 and the rear lower end of the side walls 61. A second engaging portion 67 for preventing expansion that projects downward and engages with the second engaging receiving portion 27 from the inside, and the receiving portion 28 and the lever portion 32a that are bent inward at the front portions of the side walls 61. And a pinching portion 69 for preventing the spread, which extends in the direction of the file wheel 51 and protrudes between the side wheels 52 at the rear portion of the top surface 63. .

  Specifically, the first engaging portion 66 formed inwardly projecting on the lower side of the side walls 61 of the nozzle cap 6 has an inclined surface in which the lower portion faces inward and upward from the joint portion with the side wall 61. The upper part is provided substantially parallel to the side wall 61, and the upper end is provided extending in the front-rear direction. On the other hand, the first engaging portion 66 of the column 23 of the instrument body 2 has a rectangular concave shape and its upper end is provided so as to be able to be locked with the upper end of the first engaging portion 66, and is engaged with the first engaging portion 66. In the state, the movement of the nozzle cap 6 in the upward direction and the front-rear direction is restricted.

  The nozzle cap 6 includes left and right flange portions 61a formed so that the rear end edges of both side walls 61 are bent inward and project inward, and along the rear surface of the support post 23. A second engagement portion 67 extending further downward is provided at the lower end portion. The second engagement portion 67 extends downward so as to be engaged with the inside of the second engagement receiving portion 27 protruding from the upper surface of the intermediate case 21 of the instrument main body 2, and the corner portion of the tip portion thereof is inclined. Is formed. By the engagement of the second engagement portion 67 and the second engagement receiving portion 27, the expansion deformation of the side wall 61 of the nozzle cap 6 is prevented. The second engagement portion 67 and the second engagement receiving portion 27 have the same configuration and function as the second engagement portion 167 and the second engagement receiving portion 127 in the conventional structure shown in FIG. doing.

  Further, the lower portion of the front wall 62 of the nozzle cap 6 has a notch portion 62a extending in the lateral direction to which the lever portion 32a of the flame length adjusting member 32 can move, and side walls 61 at both ends of the notch portion 62a. The front end portion is bent inward to provide a locking portion 68. On the other hand, a receiving portion 28 for restricting the rotation range of the lever portion 32a of the flame length adjusting member 32 is provided near both sides of the nozzle 31 in the intermediate case 21 of the instrument main body 2, and the nozzle cap 6 is provided on the receiving portion 28 from the front. When the nozzle cap 6 is dropped and a shock is applied to the nozzle cap 6, it comes into contact with the upper end of the intermediate case 21 and is temporarily locked to the receiving portion 28 so that the nozzle cap 6 Prevent spreading.

  Further, a sandwiching portion 69 in which both side portions of the top surface gap 65 at the rear portion of the top surface 63 of the nozzle cap 6 extend rearward in the direction of the file wheel 51 is a difference in diameter between the side wheel 52 and the file wheel 51. When the nozzle cap 6 is subjected to an impact, it can be temporarily locked to the inner surfaces of the side wheels 52, 52 to prevent deformation in the direction in which the top clearance 65 expands. .

  The attachment of the instrument body 2 of the nozzle cap 6 as described above is performed by first matching the lower end portion of the nozzle cap 6 with the outer shape of the instrument body 2 from the separated state shown in FIG. The lower inclined surface of the first engaging portion 66 of both side walls 61 of the nozzle cap 6 abuts on the upper end portion of the support column 23 when pushed down from above so as to follow the rear surface. The first engaging portion 66 moves downward along the side surface of the column 23 while being deformed as described above.

  When the nozzle cap 6 is further pushed down, the second engaging portion 67 at the lower end of the rear portion enters the inside of the second engaging receiving portion 27, and the locking portion 68 at the lower end of the front portion is lowered to the front of the receiving portion 28, When the sandwiching portion 69 enters between the side wheels 52, 52 on both sides, the first engaging portion 66 of the side walls 61 enters the inside of the first engaging receiving portion 26 of the column 23 at the final stage as shown in FIG. The state in which the first engaging portion 66 is fitted and engaged in the first engaging receiving portion 26 by the elastic force inward of the both side walls 61 and the outer surface of the side wall 61 is continuous with the side surface of the instrument body 2. Is installed and the installation is completed.

  In the assembled state, the lower end portion of the side wall 61 of the nozzle cap 6 abuts against the instrument body 2 (intermediate case 21) to prevent further downward movement, and the upper end of the first engagement portion 66 and the first engagement portion 66 are prevented. The upward movement of the nozzle cap 6 is prevented by the engagement with the upper end of the receiving portion 26, and the forward and backward movement is also caused by the constant engagement of the first engaging portion 66 and the first engaging receiving portion 26. Further, the expansion deformation of the side wall 61 of the nozzle cap 6 is caused by the engagement of the rear second engagement portion 67 and the second engagement receiving portion 27 and the upper sandwiching portion 69 and the inner surface of the side wheel 52. And the nozzle cap 6 is effectively prevented from being removed.

  Even if a deformation force acts on the nozzle cap 6 due to a drop impact or the like, the engagement of the engaging portions 66 and 67 at a plurality of locations and the temporary locking portions 68 and the clamping portions 69 are locked. Deformation is prevented, and a firm prevention function of the nozzle cap 6 is obtained.

The perspective view which shows the upper structure of the igniter provided with the nozzle cap removal prevention structure which concerns on one embodiment of this invention. The perspective view which shows the isolation | separation state before mounting | wearing with the nozzle cap of the igniter of FIG. A perspective view of a nozzle cap and an instrument body showing the structure of a conventional igniter

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Igniter 2 Instrument body 3 Ignition part 4 Actuation lever 5 Ignition mechanism 6 Nozzle cap
26 First engagement receiver
27 Second engagement receiving part
28 Receiver
31 nozzles
32 Flame length adjustment member
51 File car
52 Horizontal car
61 sidewall
62 Front wall
63 Top
66 First engaging part
67 Second engaging part
68 Locking part
69 Insertion part

Claims (1)

An ignition unit having a nozzle for jetting gas and a flame length adjusting member, an operating lever for opening and closing the jet of gas from the nozzle, and a side car on both sides of the file car In an igniter equipped with an ignition mechanism for igniting the blown gas, and attached with a nozzle cap that covers the periphery of the ignition part of the instrument body,
The instrument body protrudes upward and is formed on an outer surface of a column supporting the file wheel, a second engagement receiving unit installed at a lower rear end of the column, A receiving part that regulates the rotation range of the lever part of the flame length adjusting member,
The nozzle cap protrudes inwardly on both side walls and can be engaged with the first engagement receiving portion of the support column, and the second cap protrudes downward at the rear lower ends of the side walls. A second engaging portion for preventing expansion from engaging with the engaging receiving portion from the inside; a locking portion that is bent inward at the front portion of both side walls and that can be locked to the receiving portion from the front; A nozzle cap detachment prevention structure comprising a rear portion and a pinching portion for preventing expansion that extends in the direction of the file wheel and protrudes between the side wheels.

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