JPS5823094Y2 - Injection and flow adjustment device for gas lighters - Google Patents

Description

[Detailed description of the invention] This invention relates to a flow rate adjustment device for a gas lighter that can adjust the gas ejection flow rate in two stages, in which the flow rate adjustment means also serves as an injection valve. be.

In order to improve safety when igniting a lighter, it is necessary to make the flow rate adjustable only within a certain range to prevent abnormal combustion and excessive flames due to ejection or excessive outflow of raw gas.

However, when using a lighter under high-temperature conditions where gas vaporization is promoted, unless the flow rate adjustment range is changed to a lower flow rate range than the standard one, an excessive flame may be formed; When using a lighter under low temperature conditions where gas vaporization is suppressed, problems such as ignition failure may occur unless the flow rate adjustment range is changed to a large flow rate range.

Therefore, when using a lighter, it is preferable to adjust the flow rate adjustment range in advance in consideration of the conditions in which it will be used to prevent risks such as abnormal combustion and excessive flame, and inconveniences such as poor ignition. Conventionally, it is necessary to disassemble the lighter in order to change the adjustment range, so the current situation is that lighters are used as is, with the understanding that they may be dangerous or degrade in performance.

Therefore, the flow rate for gas lighters is designed to be able to perform a first stage flow rate adjustment that matches the usage environment of the lighter, and a second stage flow rate adjustment that corresponds to daily usage conditions within the first stage adjustment range. A regulating device has been proposed and put into practical use.

Furthermore, in such a flow rate regulating device that performs two-stage flow rate adjustment, either the first or second stage regulating means (usually the first stage regulating means) also serves as an injection valve. A flow regulating device having a structure has been proposed.

By the way, in a flow rate adjustment device having a flow rate adjustment means that also serves as an injection valve, since it is necessary to always bias the injection valve in the valve closing direction, the tension of the spring is applied to the adjustment means that also serves as the injection valve. Since the tension of the spring is supported between the adjusting screw and the adjusting barrel that screw relative to each other and is acting on the screwed part of the two, it is difficult to rotate the adjusting screw with the adjusting means that also serves as an injection valve. When doing so, the adjustment barrel often rotates with the rotation of the adjustment screw, making it impossible to accurately change the flow rate adjustment range.

This invention is based on a two-stage adjustment type flow rate adjustment device having a flow rate adjustment means that also serves as an injection valve. This device is designed to prevent the motor from rotating along with it, and will be described in detail below with reference to the illustrated embodiment.

In FIG. 1, 1 is a fuel tank of a gas lighter, 2 is a cylindrical body whose lower end is open at the bottom of the fuel tank, and the upper end of this cylindrical body 2 has a combustion valve fixed on the upper surface of the fuel tank 1. and is connected to a nozzle (all not shown).

Reference numeral 3 denotes a flow rate adjusting member inserted into the inside of the cylinder 2, and is made of a porous elastic body such as Moltoprene.

Reference numeral 4 denotes a wire mesh superimposed on the upper and lower surfaces of the flow rate adjusting member 3.

Reference numeral 5 denotes a flow rate adjustment screw whose upper end is in contact with the lower surface of the flow rate adjustment member 3 through the wire mesh 4, and a flow rate adjustment screw 5 is attached to the upper end of the flow rate adjustment tube 6 which is screwed onto the inner peripheral surface of the cylinder body 2. It is screwed in.

The flow rate adjustment surface 6 is composed of a cap part 6a that is screwed into the cylinder body 2 and the flow rate adjustment screw 5, and an operation part 6b whose upper end is press-fitted and fixed to the lower end of the cap part 6a. The lower end of the case 7 is made to protrude from the lower end of the cylinder body 2.
It faces the adjustment hole 8 made on the bottom of the.

Reference numeral 9 denotes an injection valve rod inserted into the flow rate adjustment cylinder 6 so as to be able to freely move and rotate in the axial direction, and is seated on a valve seat 10 formed on the inner peripheral surface of the flow rate adjustment cylinder 6. The gasket 11 is attached, and the gasket 1 is tightened by the tension of the spring 12 stretched between the cap portion 6a and the injection valve rod 9.
1 is crimped and held on the valve seat 10 to achieve the same injection valve function as the conventional one.

Furthermore, a flat plate-shaped protrusion 9a is provided at the upper end of the injection valve rod 9 constituting the injection valve in this way, and a slit 5a is provided at the lower end of the flow rate adjustment screw 5, and the protrusion 9a is inserted into the slit. ) The relative movement between the injection valve rod 9 and the flow rate adjustment screw 5 is restrained only in the rotational direction by engaging the injection valve rod 9 and the flow rate adjustment screw 5 to connect them, and the lower end of the valve rod 9 is used to adjust the flow rate. It is located near the lower end of the cylinder 6.

13 is a notch for operation provided on the lower end surface of the flow rate adjustment cylinder 6;
15 is a notch for operation provided on the lower end surface of the injection valve rod 9; 15 is a stopper provided between the lower end surface of the cylinder body 2 and the inner bottom surface of the case 7; It is formed integrally with the surface and restricts its rotation range.

In the flow rate adjustment device having such a structure, when the flow rate adjustment tube 6 is rotated with a claw or the like from the bottom of the case 7, the flow rate adjustment tube 6 is screwed back and forth inside the tube body 2 with this rotation, and the flow rate adjustment tube 6 is rotated. The amount of compression applied to the flow rate adjustment member 3 is changed by raising and lowering a flow rate adjustment screw 5 screwed onto the upper end of the gas flow rate adjustment member 6, thereby changing the amount of gas ejected.

For normal adjustment, adjustment using this flow rate adjustment tube 6 is sufficient, but if you wish to make adjustments beyond the adjustment range of the flow rate adjustment tube 6, use a small screwdriver or special tool to tighten the injection valve rod 9. Rotate.

At this time, the tension of the spring 12 that urges the injection valve rod 9 in the valve closing direction is acting between the injection valve rod 9 and the flow rate adjustment tube 6, and as in the conventional case, the tension of the spring 12 is biased toward the valve closing direction. and the flow rate adjustment screw 5.

That is, the tension of the spring 12 acts on the threaded portion of the flow rate adjustment tube 6 and the cylinder body 2 via the flow rate adjustment tube 6, eliminating the screw gap between the two and generating frictional contact force there. Therefore, even if the injection valve rod 9 is rotated, there is no fear that the flow rate adjustment cylinder 6 will rotate accordingly.

On the other hand, since the tension of the spring 12 is not acting on the flow rate adjustment screw 5 at all, the flow rate adjustment screw 5 rotates smoothly by rotation of the injection valve rod 9, and the flow rate can be adjusted within a desired range. .

In this way, as the injection valve rod 9 rotates, the flow rate adjustment screw 5 rotates and changes the amount of protrusion from the flow rate adjustment tube 6, thereby changing the amount of compression to the flow rate adjustment member 3 and changing the gas jet flow rate. .

Therefore, by changing the adjustment range by rotating only the injection valve rod 9 in this way, it is possible to obtain an adjustment range that is suitable for the usage conditions of the lighter.

In addition, if the injection port of the gas cylinder is crimped to the lower end of the injection valve rod 9 in order to fill the fuel tank 1 with gas, the spring 1
2, the injection valve rod 9 moves as shown by the dashed line, and the gasket 11 comes into contact with the lower surface of the flow rate adjustment tube 6, so that when the injection valve rod 9 is pushed further, it rises from the valve seat 10. The gasket 11 is prevented from moving by coming into contact with the lower surface of the flow rate adjustment tube 6, and as a result, the injection valve hole of the injection valve rod 9 moves upwards and is opened, so that the gas can be injected into the fuel in the same manner as in the past. It can be injected into the tank 1.

At this time, since the injection valve rod 9 and the flow rate adjustment screw 5 are connected to each other so as to be able to move freely in the axial direction, there is no possibility that gas filling will be hindered.

Also, foreign matter may enter the injection valve, etc., or the flow rate adjustment cylinder 6
An opening/closing lid, a cap, or the like may be attached to the adjustment hole 8 in order to prevent the adjustment hole 8 from rotating inadvertently and causing the gas ejection flow rate to change inadvertently.

As explained above, according to the flow rate adjustment device according to this invention, the spring 12 that constantly biases the injection valve rod 9 in the valve opening direction is tensioned between the injection valve rod 9 and the flow rate adjustment cylinder 6. Since it is not tensioned between the flow rate adjustment screw 5 and the flow rate adjustment screw 5 as in the conventional case, there is no fear that the tension of the spring 12 will act on the threaded portion between the flow rate adjustment screw 5 and the flow rate adjustment cylinder 6. .

Therefore, when the flow rate adjustment screw 5 is rotated by the injection valve rod 9, the flow rate adjustment cylinder 6 rotates accordingly.
In practice, there is no fear that the flow rate adjustment range cannot be changed using the injection valve rod 9, and only the flow rate adjustment screw 5 can be independently and smoothly rotated to move up and down in the axial direction. This is because the adjustment range can be changed.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the main parts showing an embodiment of this invention. 1...Fuel tank, 2...Cylinder body, 3.
...Flow rate adjustment member, 5...Flow rate adjustment screw, 6...Flow rate adjustment tube, 7...Case,
8...adjustment hole, 9...injection valve rod, 10
... Valve seat, 11 ... Gasket, 12
...Spring, 15...Sudonno-

Claims (1)

[Scope of utility model registration request] A cylinder 2 whose lower part is open downward from the bottom of the fuel tank and whose upper part communicates with a combustion nozzle is fixed in the fuel tank 1, and a flow rate adjusting cylinder 6 is screwed into the cylinder 2 so as to be movable up and down in the axial direction. ,
A flow rate adjustment screw 5 that changes the amount of compression of the flow rate adjustment member 3 is screwed into the upper part of the flow rate adjustment tube 6 so as to be able to move up and down in the axial direction, and a valve seat 10 formed on the inner circumferential surface of the flow rate adjustment tube 6 is screwed into the flow rate adjustment screw 5 that changes the compression amount of the flow rate adjustment member 3. An injection valve rod 9 equipped with a seated gasket 11 is arranged inside the flow rate adjustment cylinder 6, and the upper part of the injection valve rod 9 is integrated with the flow rate adjustment screw 5 only in the rotational direction, and relative movement in the axial direction is free. An injection method for a gas lighter, characterized in that a spring 12 is stretched between the injection valve rod 9 and the flow rate adjusting cylinder 6, and the injection valve rod 9 is connected to the injection valve rod 9 in the valve closing direction at all times. Flow rate adjustment device.