JPH0523970Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas lighter, and particularly relates to an improvement in the mounting structure for fixing a fuel gas tank to a case.

[Summary of the invention] This invention has a mounting structure in which a fuel tank housed in a case is fixed with a screw threaded from the outside of the bottom of the case, and is designed to prevent expansion and contraction of the tank due to changes over time, deformation of the bottom plate of the case, and operating parts. This corrects looseness and errors in assembly dimensions due to wear, and eliminates loosening of fixing screws and the effect on other assembly parts.

[Prior Art] Conventionally, in gas lighters in which a fuel tank is housed in a case and assembled, a method of fixing the fuel tank to the fuel tank from the outside of the bottom plate of the case with a screw is often used.

[Problems to be solved by the invention] As mentioned above, the method of fixing the fuel tank with screws is extremely simple, but it may cause the fuel tank to expand or contract over time due to heat changes during use, or the operating parts may When the case is worn out or the bottom plate of the case is dented, the assembly dimensions change and the fixing screws become loose, and other assembly parts also become loose or have gaps, which can cause failures. .

As a countermeasure, for example, if a plastic tank is used to suppress heat conduction to the fuel tank and increase pressure resistance, pressure resistance and stability will improve, but on the other hand, over time Subtle changes in expansion and contraction occur in response to humidity, temperature, etc., changing the dimensions of the tank and affecting other assembly parts. Even in the case of metal tanks, the screw seats of the case may become dented during use, which inevitably causes the screws to loosen and cause malfunctions.

This invention corrects dimensional errors caused by expansion and contraction of the fuel tank, deformation of the case, wear of operating parts, etc. mentioned above, and accurately eliminates loosening of fixing screws and the effects on other assembly parts. Its main purpose is to provide writers.

[Means for Solving the Problems] In order to achieve the above object, the gas lighter of the present invention has a gas lighter that engages with the assembly joint of the case in order to regulate the insertion dimension for incorporating the fuel tank inside the case of the gas lighter. In order to achieve this, the frame body and the fuel tank are combined and connected, and a cavity is provided in the bottom wall of the combustion tank, and a cavity is provided inside the cavity between the flange plate of the spiral cylinder and the bottom surface of the cavity. The lower end of the spiral tube is made to sandwich an elastic material so as to face the through hole opened in the bottom wall of the fuel tank, and there is a dimensional difference between the bottom wall of the fuel tank to be assembled into the case and the inner bottom of the case. The fuel tank is assembled by providing a gap to ensure a gap, inserting a fixing screw from the bottom wall surface of the case, and screwing it together with a threaded cylinder located in a through hole in the bottom wall of the fuel tank.

[Function] In the gas lighter with the above configuration, if the fuel tank expands or contracts, the case is deformed, or the assembled dimensions change due to wear of parts, etc., and an error occurs in the dimensions, In all cases, traction force is always maintained between the outer case and the fuel tank so that dimensional errors can be absorbed by the expansion and contraction of the elastic material provided in the empty space in the bottom wall of the tank, thereby preventing loosening of the outer case or fixing screws. can be prevented from affecting other assembly parts.

[Embodiment] FIGS. 1 to 7 show an embodiment of the present invention. In the figure, 1 is a gas lighter case, 2 is a fuel tank, 3 is a frame, and 4 is a cap.

A bottom wall 2a is integrally fixed to the fuel tank 2, and a part of the bottom wall 2a has a vacant space 2.
b, and a through hole 2C that communicates with the empty chamber 2b and has a width narrower than that of the empty chamber 2b is formed. The cavity 2b and the through hole 2c are cut into a groove shape from the side surface of the bottom wall 2a, as shown in FIGS. 6 and 7, and the cross section of the cavity 2b and the through hole 2c is approximately T. It is shaped like a letter.

The cavity 2b and the through hole 2c are formed by a screw tube 5a having a collar plate 5a integrally on its head, and an annular elastic member 6 fitted into the screw tube 5 so that its upper surface is in contact with the collar plate 5a.
is fitted from the side opening of the bottom wall 2a.
At this time, the collar plate 5a of the spiral tube 5b and the elastic material 6 are connected to the empty space 2.
b, and the screw tube 5b is housed in the through hole 2c, but a relatively parallel flat surface 5c is formed on the outer peripheral surface of the screw tube 5b, and the flat surface 5c is a groove-shaped side wall of the through hole 2c. By being engaged with, the spiral tube 5b
This is to prevent idle rotation. Further, the elastic material 6 described above is held between the lower surface of the flange plate 5a and the bottom surface of the cavity 2b, that is, the stepped portion of the through hole 2c.

After the above-mentioned screw tube 5b having the flange plate 5a and the annular elastic member 6 are attached to the cavity 2b and the through hole 2c, the fuel tank 2 is inserted into the case 1 and assembled. As shown in FIG. 4, a gap S between the inner bottom surface of the case 1 and the bottom wall 2a of the fuel tank 2 is dimensioned so that it can be maintained even after the entire assembly is completed as shown in FIG. In this state, insert the fixing screw 7 through the insertion hole 7a formed on the bottom of the case 1, and connect the fixing screw 7 and the screw tube 5.
By screwing together with b and tightening, the installation is completed with the elastic member 6 being compressed between the collar plate 5a and the bottom surface of the cavity 2b.

The material used for the elastic member 6 is preferably an annular seat plate made of polyurethane with good restorability, but a metal elastic washer or spring may also be used.

A gas ejection passage is provided from the upper part of the fuel tank 2 to the frame body 3. That is, 8
is the nozzle on the fuel tank side, 9 is the burner nozzle,
10 is a mixing tube, 10a is its intake part, 11 is a combustion tube, and the burner nozzle 9 is connected to the mixing tube 10 so as to be able to move up and down.

The frame body 3 is provided with two support plates 3a (only one side of which is shown in FIGS. 2 and 3) that protrudes downward at required positions on both sides, and is symmetrically provided.
The support plate 3a is supported by a pin 12 on the tank side, and the combustion tube 11 is held at one end of the frame 3.

The cap 4 is made in a shape that covers the entire upper side of the frame 3, and two leg plates 4a are provided approximately in the center thereof (only one side is shown in FIG. 3, and overlaps with the support plate 3a in FIG. 2). (Not shown.) It protrudes downward symmetrically on both sides, and its lower end is rotatably supported by the pin 12, and the lower end of the leg plate 4a has a hanging metal fitting 13 for the tank side nozzle 8. A hook piece 4b that engages with is provided, and a press piece 4c that engages with the power generation operator 14 protruding from the tank side is provided at an intermediate portion.

In the case of the gas lighter having the above configuration, as shown in FIG. 3, when the cap 4 is rotated rearward and opened, the gas tank When the side nozzle 8 is lifted and the tank side valve (not shown) is opened, the fuel gas is ejected through the burner nozzle 9 into the mixing pipe 10, and the negative pressure generated by the ejection causes the outside air to be removed. The mixed gas is sucked in from the intake portion 10a and reaches the combustion tube 11. On the other hand, when the cap 4 is rotated, the leg plate 4a
The power generation controller 14 is pressed down by the pressing piece 4c, and high pressure discharge is performed via a high pressure discharge electrode (not shown) provided in the combustion tube 11, so that the mixed gas in the combustion tube is ignited and combustion takes place.

Incidentally, in the drawings, reference numerals 15 and 16 are holes in which an injection nozzle for replenishing gas into the combustion tank 2 and a gas ejection amount adjustment mechanism are attached, but in the drawings showing this embodiment, the injection nozzles and The gas ejection amount adjustment mechanism is omitted from the illustration. Therefore, in the above-mentioned guylighter, the cap 4, frame 3, and fuel tank 2 are assembled in advance as shown in FIG. 2, and then inserted and assembled into the case 1 as shown in FIG. The assembly joint 1a, which is the opening of the case 1, is assembled between the bottom surface of the receiver 2a, which is the bottom wall of the fuel tank 2, and the inner bottom surface of the case 1, by engaging the lower end of the frame 3. It is possible to set the dimensional difference to ensure the gap S even after completion, and the method for engaging is as described above between the assembly joint 1a, which is the opening of the case 1, and the lower end of the frame 3. The same effect can be obtained as long as a gap can be maintained between the bottom wall surface of the fuel tank 2 and the inner bottom surface of the case 1 even after assembly is completed. As an example other than the above example, a step is provided on the inner surface of the case for engagement, and the frame is inserted up to the step, or a part of the fuel tank is engaged and a gap S is created on the inner bottom surface of the case after assembly is completed. It would be a good idea to be able to secure this as well. The method of fixing is as shown in Fig. 1, by screwing together the fixing screw 7 inserted through the bottom hole 7a of the case 1 and the threaded tube 5 facing the through hole 2c on the bottom of the receiver 2a. Therefore, in order to elastically maintain the pressure contact force of the joint surfaces engaged at the assembly joint portion 1a, inside the cavity 2b, there is a flange plate 5a integral with the screw tube 5b and a bottom surface of the cavity 2b. By sandwiching the annular elastic member 6 between them and tightening them by screwing the fixing screw 7 and the threaded tube 5b, the structure is such that the elasticity of the elastic member 6 always maintains a compressed loaded state. The following effects can be obtained.

That is, by assembling the fuel tank 2 in an engaged state in which the lower end of the frame 3 connected to the fuel tank 2 and the opening of the case 1 are joined at the assembly joint 1a, the assembly dimensions are regulated, and the inside of the case 1 is It is possible to tighten the fixing screw 7 while leaving a gap S between the bottom surface and the bottom surface of the fuel tank 2, and the compressive elasticity of the elastic material 6 acts in response to the tightening strength, and the dimensions at the time of assembly are adjusted. Since errors can be easily corrected and the pressure contact force of the engagement surface of the assembly joint 1a can be maintained elastically, the pulling force of the fixing screw 7 can be easily adjusted between the bottom of the case 1 and the bottom of the fuel tank 2. Since it always acts stably, the coefficient of friction applied to the fixing screw 7 does not decrease, and loosening of the threaded portion can be prevented.

In addition, during use, the dimensions of the fuel tank 2 may increase due to changes over time, wear of parts, dents on the case, etc.
Due to dents, etc., the assembly dimensions change in the direction of loosening,
When the engagement surface of the assembly joint 1a becomes loose and a gap is created, there is a possibility that the fixing screw 7 will inevitably come loose as well. The screw tube 5b having the flange plate 5a is pushed up toward the top surface of the empty chamber 2B in response to the loosened dimension value, absorbs the loosened dimension, and the screw tube 5b has the flange plate 5a. Since the fitted fixing screws 7 can continue to elastically maintain the traction state between the bottom surface of the case 1 and the fuel tank 2, the pressure contact force of the assembly joint portion 1a is always maintained normally.

Furthermore, even in the case of a phenomenon in which the dimensional difference in the gap S between the bottom surface of the case 1 and the fuel tank 2 increases due to dimensional shrinkage of the fuel tank 2 due to changes over time, etc., the spiral tube 5b having the collar plate 5a is , the traction toward the bottom side of the empty chamber 2B is strengthened, and the elasticity of the elastic member 6 can correspond to the compressed state to further contract, so that it is possible to absorb the increase error in the gap size, and the assembly and joint. The pressing force of the portion 1a increases, and the screw cylinder 5b
The fixing screw 7 screwed into the case 1 is maintained in a direction that increases the traction elasticity between the bottom surface of the case 1 and the fuel tank 2, so that a more stable state can be maintained.

[Effects of the invention] As described above, according to the invention, it is possible to absorb expansion/contraction errors in assembly dimensions caused by expansion/contraction deformation of the fuel tank, deformation of the case, etc., and prevent loosening of tank fixing screws. A gas lighter can be obtained that can reliably eliminate influence on other assembly parts.

[Brief explanation of drawings]

Figure 1 is a cross-sectional side view of essential parts showing an embodiment of the present invention, Figure 2 is a side view with the case removed, and Figure 3 is a side view of the cap opened from the state shown in Figure 2. Figure 4 is a cross-sectional side view of the main part showing the state before the fixing screw is screwed in, Figure 5 is an exploded perspective view showing the fitted state of the screw tube and the elastic material, and Figure 6 is the same view of the screw tube. FIG. 7 is a perspective view of a main part showing the direction of fitting the elastic material into the cavity and the through hole, and FIG. 7 is a perspective view showing a state in which the fitting shown in FIG. 1... Case, 2... Fuel tank, 2a... Tank receiver, 2b... Vacancy, 2c... Through hole, 3...
Frame body, 4... Cap, 5a... Flange plate, 5b...
Spiral tube, 9... Elastic material, 7... Fixing screw, 8... Tank side nozzle, 9... Burner nozzle, 10...
Mixing pipe, 10a... Intake part, 11... Combustion tube, 1
2...Pin, 13...Hanging fitting, 14...Power generation control.

Claims (1)

[Scope of utility model registration request] In order to regulate the insertion dimensions for assembling the fuel tank inside the case of the gas lighter, the frame and the fuel tank are combined and connected in order to engage with the assembly joint of the case, and a vacant space is formed in the bottom wall of the fuel tank. is provided inside the cavity, and an elastic material is sandwiched between the flange plate of the spiral cylinder having a flange plate and the bottom surface of the cavity, and the lower end of the screw cylinder is inserted into the through hole opened in the bottom wall of the fuel tank. A dimension difference is provided between the bottom wall surface of the fuel tank to be assembled into the case and the inner bottom surface of the case to ensure a gap, and fixing screws are inserted from the bottom wall surface of the case to secure the fuel tank. A gas lighter characterized in that it is assembled by screwing together a screw tube located in a through hole in the bottom wall of the gas lighter.