JPS599129Y2 - liquid fuel combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustion device, and for example, to a combustion device such as a kerosene stove with an improved lifting mechanism for a wick.

Conventionally, in this type of lamp wick lifting mechanism, for example, a ratchet plate and a drive wheel are provided on the operating shaft via a ratchet plate holder, and a frictional force is created between the drive wheel and the ratchet plate to overcome the force of the return spring of the operating shaft. A structure has been proposed in which an adjustment spring having a spring is interposed, and the lamp wick is raised and lowered in conjunction with the accumulation and release of the adjustment spring.

According to this structure, when the operating shaft is rotated counterclockwise and the lamp wick is lowered manually, the adjustment spring always moves in contact with the ratchet plate and spring holder. Therefore, during long-term use, the adjustment spring, ratchet plate, and spring holder There is a risk that the spring will wear out and lose its designed spring force, causing the adjustment spring to slip and making it difficult to lift the wick.

Furthermore, in special cases, the end of the adjustment spring may get caught on a spring holder or the like and rotate, causing the adjustment spring to become flat.

The present invention was developed in view of these points, and includes a bending portion formed at the end of the adjustment spring, and a drive wheel provided for the adjustment spring covered with the entire circumference of the adjustment spring. By shaping the flange to restrict the movement of the adjustment spring and prevent it from sagging, it also prevents foreign matter such as dust from entering the adjustment spring. To provide a liquid fuel combustion device that can operate smoothly without getting stuck.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a fixed tank, the outer end of a cylindrical mounting bracket 2 is integrally fixed to a predetermined position of the fixed tank 1, and a hexagonal bolt 4 having a guide hole 3 is screwed into the mounting bracket 2 from the outside. ing.

Further, reference numeral 5 denotes an operating shaft, and the inner side of the operating shaft 5 is rotatably penetrated into the mounting bracket 2 through the guide hole 3 of the hexagonal bolt 4, and a pinion 6 is fixed to the inner end thereof. This pinion 6 is meshed with a rack 7, which is fixed to a lamp wick 9 via a wick holder 8.

A collar 10 is attached to the operating shaft 5 inside the pinion 6, and the outer side of the collar 10 is inserted through the inner end of the mounting bracket 2 to prevent the operating shaft 5 from swinging.

Further, an O cylinder 11 and a flat washer 12 are attached to the operating shaft 5 at the outer end of the collar 10 to prevent oil leakage, and the operating shaft 5 is attached between the flat washer 12 and the hex bolt 4. Coil spring 13 is installed,
This coil spring 13 biases the pinion 6 so that it always meshes with the rack 7.

Further, a dial 14 is fixed to the outer end of the operating shaft 5.

Next, a support 16 for the return spring is fixed to the head of the hexagonal bolt 4, and a cover 17 for the return spring is attached to the outer side of the support 16 on the operating shaft 5.

Further, a return spring 18 is wrapped around the cover unit 17, and one end 18a of the return spring 18 is locked to the support 16, and the other end 18a is secured to the support 16.
b is locked in a locking hole (not shown) of the cover unit 17.

Further, 19 is a ratchet plate holder, and this ratchet plate holder 19 is fitted onto the outer side of the operating shaft 5, and this ratchet plate holder 19 is attached to the pin 2 with respect to the operating shaft 5.
They are fixed together at 0.

Additionally, an annular engagement plate 2 is attached to this ratchet plate holder 19.
1 is integrally formed, and the outer end portion 22 of the cover unit 17 is integrally fixed to the inside of this engagement plate 21.

Next, a ratchet plate 23 and an annular spring holder 24 are rotatably attached to the ratchet plate holder 19, and the ratchet plate 23 and spring holder 24 are integrally connected.
An annular locking edge 25 is formed on the outer side of 4.

A coil-shaped adjustment spring 26 is crimped and wound around the spring holder 24 in a counterclockwise direction by its own elasticity, and one end of the adjustment spring 26 has a bent portion 26a that protrudes outward. shaped,
A ring-shaped connecting portion 26b formed at the other end is secured by a claw piece 28 formed on the drive wheel 27.

This drive wheel 27 is the spring holder 2
It is large enough to cover the outer surface of 4, and
An annular flange 29 is provided to protrude inward so as to include the spring holder 24 on the outer periphery.

The drive wheel 27 is attached to the outer end of the ratchet plate holder 19, and the drive wheel 27 is crimped to the outer end of the ratchet plate holder 19 by an elastic plate 30, and operates together with the ratchet plate holder 19. It is supposed to be done.

Further, this elastic plate 30 is connected to a retaining ring 3 that is secured to the operating shaft 5.
It is locked at 1.

Further, the ratchet plate 23 has a ratchet 23 on the outer periphery.
A locking portion of a clutch (not shown) rotatably supported by this ratchet 23a is engaged.

This clutch is energized so that its locking portion is always engaged with the ratchet 23a.

Then, when this ratchet plate 23 rotates clockwise in the figure, the clutch is lowered by the ratchet 23a as the ratchet plate 23 rotates to the right in the figure, and the clutch is ratcheted at a predetermined position.
The locking portion of the clutch is designed to mesh with a.

The clutch is connected to a fire extinguisher (not shown), and is activated by the operation of the fire extinguisher to automatically unlock the ratchet plate 23.

In this structure, when the operating shaft 5 is rotated clockwise using the dial 14, the pinion 6 of the operating shaft 5 lifts the wick 9 through the rack 7, and the upper end of the wick 9 is connected to the fire pan. position it above.

At the same time, the ratchet plate holder 19 fixed to the middle of the operating shaft 5 with a pin 20 is rotated in conjunction with the ratchet plate holder 19, and the engagement plate 21 of this ratchet plate holder 19 and the cover unit 17 coupled thereto are rotated in conjunction with the ratchet plate holder 19. be done.

The return spring 18, which has one end locked to the support 16 and the other end locked to the cover unit 17, is wound and stored as the cover unit 17 rotates.

Further, as the ratchet plate holder 19 rotates, the drive wheel 27 engaged therewith is rotated in conjunction with the rotation, and the adjustment spring 26 engaged with the claw piece 28 of the drive wheel 27 is similarly rotated clockwise. .

However, since the adjusting spring 26 is wound counterclockwise with respect to the spring holder 24, the adjusting spring 26 tends to move to the left in FIG. Since a locking edge 25 is formed on the rim, the adjustment spring 26 is received by the locking edge 25, and the ratchet plate 23, which is integrated with the spring holder 24, becomes integrated with the drive wheel 27 due to the frictional force. Further, the flange 29 of the drive wheel 27 prevents the adjustment spring 26 from being excessively deformed, thereby eliminating sag, and the ratchet plate 23 is similarly rotated to the right.

Then, this ratchet plate 23 is rotated while lowering the clutch, and when the interlocking rotation of the ratchet plate 23 is stopped, the locking portion of the clutch is engaged and locked with the ratchet 23a at a predetermined position. The energy stored in the return spring 18 for lowering the lamp wick 9 is locked.

Next, when the raised lamp wick 9 is ignited, the flame circulates evenly around the lamp wick 9 and burns, but at this time, the height of the lamp wick 9 at the time of ignition with respect to the lamp wick 9 causes the lamp 9 to protrude too much, resulting in a state of combustion. Often, the lamp wick 9 becomes unbalanced, and it is necessary to lower the wick 9 a little, or to reduce the firepower during combustion.

In such a case, if the operating shaft 5 is rotated to the left using the dial 14, the ratchet plate 23 will not rotate because it is locked by the clutch, and the stored energy of the return spring 18 will not be released. However, the drive wheel 27 is rotated slightly to the left via the ratchet plate holder 19 that is engaged with the operating shaft 5, and the adjustment spring 26 that is engaged with the claw piece 28 of the drive wheel 27 is rotated as described above. It is unwound in the opposite direction to expand its diameter, the tightening force on the spring holder 24 is weakened, and the adjustment spring 26 idles, so the operating shaft 5 is rotated to the left, and its pinion 6 and rack are The lamp wick 9 is lowered by a predetermined amount through the interlocking action of the lamp 7 and burns in a well-balanced manner.

In the above case, that is, by turning the operating shaft 5 to the left, the lamp wick 9
When lowering the friction retainer, even if lubricant is applied to the friction retainer, the friction between the friction retainer and the adjustment spring 26, spring holder 24, and ratchet plate 23 will be reduced by the lubricant, so the friction will not be smooth. It is operated downward.

At this time, by selecting the wire diameter of the adjusting spring 26, the adjusting spring 26 does not slip due to the lubricant and cannot be adjusted, and can be adjusted sufficiently.

Furthermore, since the bent portion 26a formed at one end of the adjustment spring 26 protrudes outward, it will not get caught.

Next, in the embodiment described above, the ratchet plate 23 is rotated clockwise and the clutch is engaged and disengaged in response to the ratchet plate 23, but the ratchet plate 23 is rotated counterclockwise as shown in FIG. The locking portion B of the clutch A may be locked to the ratchet 23H of the ratchet plate 23.

In this case, the return spong 18 of the operating shaft 5 wound around the cover unit 17 is wound in the right-handed direction, and the adjustment spring 26 is also wound in the right-handed direction.

Then, when the operating shaft 5 is rotated to the left, the lamp wick 9 rises and the return spring 18 is charged, and when the operating shaft 5 is rotated to the right, the lamp wick 9 is lowered.

Therefore, the lamp wick 9 can be raised and lowered by rotating the operating shaft 5 in the opposite direction to that in the previous embodiment.

Furthermore, in the embodiment described above, the case where the spring holder 24, drive wheel 27, and ratchet plate 23 are mounted outside the engagement plate 21 of the ratchet plate holder 19 has been described; however, this spring holder 24,
The drive wheel 27 and the ratchet plate 23 may be mounted inside the engagement plate 21 of the ratchet plate holder 19, as shown in FIG.

In this case, the spring holder 24 is arranged with its annular locking edge 25 facing inward, that is, toward the lamp wick 9 side, and the drive wheel 27 is arranged with respect to this inner locking edge 25. It is better to do this.

By winding the right-handed adjustment spring 26 around this spring holder 24 in the same manner as in the previous embodiment, the same operation as in the previous embodiment can be obtained.

Further, in the above embodiment, the adjustment spring 26 may be wound around the spring holder 24 in a left-handed direction.

According to the present invention, the adjustment spring is coiled and wrapped around the spring holder using its own elasticity, and one end is bent outward, and the other end is connected to the drive wheel. By locking the adjustment spring to the ratchet plate, the number of turns, material, wire diameter, etc. can be selected from a wide range in order to set the appropriate frictional force. Positioning can be easily performed centering on the fitting hole, and therefore the design and assembly of parts can be easily managed.

In addition, by forming a flange on the outer periphery of the drive wheel that covers the adjustment spring, this flange can restrict the movement of the adjustment spring beyond a certain level and reliably prevent it from becoming sagging. The flange can reliably prevent foreign matter such as dust from entering the adjustment spring, and there is no fear that the function of the adjustment spring will be impaired by foreign matter. Due to the outward bending, there is no risk of the inner end getting caught in the spring holder when the adjustment spring is activated, which could damage the spring holder or cause the adjustment spring to become sagging. Nor.

Therefore, the lamp wick can always be smoothly raised and lowered by rotating the operating shaft.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the liquid fuel combustion device of the present invention, Fig. 2 is a sectional view of the frictional coupling member that moves the lamp wick up and down, Fig. 3 is a front view of another embodiment of the ratchet mechanism, and Fig. 4 FIG. 2 is a cross-sectional view of another embodiment of the liquid fuel combustion device. 5... Operation axis, 9... Light wick, 18...
... Return spring, 19 ... Ratchet plate holder, 23 ... Ratchet plate, 24 ...
... Spring holder, 26 ... Adjustment spring, 26 a ... Bending part, 26 b.
...Connection part, 27...Drive wheel, 29...Brim part.

Claims (1)

[Scope of utility model registration request] A lamp wick, an operating shaft that raises and lowers the lamp wick, a return spring that stores downward return force when the lamp wick is raised, a ratchet plate holder fixed to the operating shaft, and a rotatable ratchet plate holder. A ratchet plate is provided on the holder and engages and disengages from the locking mechanism, a drive wheel is attached to the ratchet plate holder, and the drive wheel is interposed between the drive wheel and the ratchet plate, and when the wick is raised, the drive wheel is and a ratchet plate to enable interlocking rotation by frictionally coupling the wick and a ratchet plate, and an adjustment spring whose biasing force is released when the wick is lowered to enable rotation of the operating shaft. An annular spring holder is attached to the ratchet plate, and a coiled adjustment spring is crimped and wound around the spring holder by its own elasticity, and one end of the adjustment spring protrudes outward. A bent portion is formed, and the drive wheel covers the outer surface of the spring holder, and an annular flange is formed on the outer periphery of the drive wheel to cover the adjustment spring, and the drive wheel is provided with the adjustment spring. A liquid fuel combustion device characterized in that a connecting portion at the other end is locked.