JPS6042289Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a liquid fuel combustion device.

In liquid fuel combustion devices such as kerosene stoves, the wick is moved up and down by rotating the operating shaft, and when the wick rises, the wick lowering blade is returned to the spring and stored, and in an emergency, the return spring suddenly lifts the wick. Many are used to extinguish a fire by lowering it down.

As the return spring, a coiled spring wrapped around the operating shaft is generally used.
When adjusting the assembly of the return spring or adjusting it during maintenance and inspection, it is easy to cause the return spring to become excessively contracted or expanded by rotating the operating shaft, which may impair the function of the return spring. .

The present invention aims to improve these points, and aims to reliably prevent damage to the return spring during adjustment, and to facilitate handling.

The liquid fuel combustion device of the present invention includes a fixed tank,
a lamp wick that is provided to be movable up and down with respect to the fixed tank and has a rack for vertical movement via a wick holder on the outside;
An operating shaft is rotatably supported on the fixed tank via a bearing, and has a pinion at its inner end that meshes with the rack, and a center portion is fitted to the operating shaft to rotate together with the operating shaft. a retainer that is engaged and has an annular recess that is annular around the operating shaft and is open on the inside, and a locking hole formed on the outside of the annular recess; a coil-shaped return spring that is housed in and wound around the fixing tank, has one end locked in the locking hole of the restrainer, and has the other end locked in one side of the fixed tank. It is characterized by this.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a fixed tank, a wick guide tube 2 is erected by welding on the inside of this fixed tank 1, and a cylindrical lamp wick 3 is held on the outer peripheral side of this wick guide tube 2 by an outer wick holder 4. In this state, the lead holder 4 is fitted so as to be slidable in the vertical direction, and a rack 6 is attached to the outer side of the lead holder 4 via a rack base 5.

In addition, the outer end of the metal fitting 7 is integrally fixed to one side of the fixed tank 1 in a cylindrical shape, and the hexagonal bottle having the shaft hole 8 in the center is inserted into the metal fitting 7 from the outside. A shaped bearing 9 is screwed into the shaft hole 8 of the bearing 9, and the inner side part of the operating shaft 10 is rotatably inserted and supported, and the inner end of the operating shaft 10 is engaged with the rack 6. A pinion 11 is fixed thereto.

Further, a collar 12 is fitted onto the inner side of the operating shaft 10 with respect to the pinion 11, and the outer side of the collar 12 is fitted into the inner side of the fitting 7. This prevents the operating shaft 10 from wobbling.

Also, the operating shaft 1 is connected to the outer end of the collar 12.
0, an O-ring 13 and a flat washer 14 are fitted to prevent oil leakage, and a coil spring 15 is fitted to the operating shaft 10 between the flat washer 14 and the bearing 9. As a result, the pinion 11 is always urged to mesh with the rack 6.

Further, on the outside of the fixed tank 1, a locking pin 16 is press-fitted orthogonally to the operating shaft 10 through an insertion hole 17, and is engaged with the locking pin 16 for co-operation rotation. In the state where the holding device 1 is attached to the operating shaft 10,
8 is fitted in its center.

This holding tool 18 is formed with an annular recess 19 that is annular with the operating shaft 10 at its center and is open on the inside. A coiled return spring 20 is housed and wound inside this annular recess 19. One end of the return spring 20 is locked in a locking hole 21 provided on the outside of the annular recess 19 of the suppressor 18, and the other end of the return spring 20 is locked in a locking hole 21 provided on the outside of the annular recess 19 of the retainer 18. It is locked to a retaining edge 22.

Further, a circular protrusion 23a is provided at the outer center of the retainer 18.
A ratchet plate 24 is fitted into the circular protrusion 23a via an annular spring holder 25 fixed to the circular protrusion 23a.
A square protrusion 23b is protruded from the outer side of the cover, and a cover unit 26 is fitted and locked to the square protrusion 23b through a square hole 26a.

A drive spring 27 is wound around the spring holder 25, and the drive spring 27 resists its own elasticity to cause the spring holder 25 to
One end is crimped to the cover, and the other end is locked to a claw piece 28 formed on the cover 26.

The cover unit 26 is crimped and locked to the spring holder 25 by an elastic retaining ring 29, and in this state, the operation dial 30 is fitted to the outer end of the operation shaft 10. .

Further, a vibration sensing device 32 is provided on one side of the fixed tank 1 via a base 31, and this vibration sensing device 32 is connected to a pendulum 3.
A locking piece 35 is provided which rotates about the locking piece shaft 34 in accordance with the operation of the ratchet plate 24.
A manual fire extinguishing handle 3 is engaged with the engaging teeth of
6 is provided.

In such a configuration, when the operating shaft 10 is rotated clockwise through the operating dial 30 during hot firing, the lamp wick 3 is transferred to the wick holder 4 via the rack 6 meshed with the pinion 11 of the operating shaft 10. In the held state, the upper end of the lamp wick 3 rises and is positioned in a fire pan (not shown). The return spring 20 is rotated while resisting the force and being prevented from reversing by the locking piece 35, thereby gradually accumulating the return spring 20.

In this state, the lamp wick 3 is ignited and used for hot burning, but if you want to extinguish the fire urgently, use the ratchet plate 24.
By releasing the locking of the locking piece 35, the biasing force stored in the return spring 20 rotates the operating shaft 10 to the left, and this counterclockwise rotation of the operating shaft 10 causes the above-mentioned operation during hot baking. The opposite action occurs and the wick 3 is lowered.

Note that when the operation dial 30 is rotated clockwise during hot baking, the tightening force of the drive spring 27 against the spring holder 25 exceeds the reversing force of the return spring 20 and acts to prevent counterclockwise rotation.

In addition, when adjusting the assembly of each part, the presser 18 is co-rotated by forward and reverse rotation of the operation shaft 10, and the return spring 20
When contracting or expanding the diameter of the return spring 20, the return spring 20 operates only within the annular recess 19 of the restrainer 18, and further operation is suppressed, so that the function of the return spring 20 is not impaired.

According to the present invention, the return spring is housed and installed in the annular recess formed in the retainer, so when adjusting the installation of each component, the retainer can be rotated in conjunction with the forward and reverse rotation of the operating shaft. Even if the return spring is expanded in latitude or diameter, the return spring operates only within the annular recess of the retainer and is prevented from operating beyond that range, without impairing the function of the return spring. Can be safely integrated and adjusted.

In addition, since the return spring is installed in a state in which it is installed directly opposite the retainer, and one end is locked in the locking hole of the retainer, the return spring and the retainer can be integrated into a unit. The operating shaft can be easily and reliably assembled into and disassembled from the fixed tank, and there is no fear that the return spring will be installed in the opposite position relative to the holding tool during disassembly, allowing the return spring to work well. can.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention. Figure 1 is a sectional view of a liquid fuel combustion device, Figure 2 is an exploded perspective view of a part of it, and Figure 3 is a partially exploded view of it. FIG. 1...Fixed tank, 3...Light wick, 4.
... Core holder - 6 ... Rack, 9 ...
...Bearing, 10...Operation shaft, 11...
Zenion, 18... Suppressor, 19...
Annular recess, 20...Return spring, 21...
...Lock hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A fixed tank, a lamp wick which is provided to be movable up and down with respect to the fixed tank and has a rack for vertical movement via a wick holder on the outside, and which is rotated via a bearing in the fixed tank. an operating shaft that is freely supported and has a pinion at its inner end that meshes with the rack; A restraining tool having an annular recess formed in the center and opening on the inside, and a locking hole formed on the outside of the annular recess; a coil-shaped return spring having one end locked in a locking hole of a restrainer and the other end locked in one side of the fixed tank; a liquid fuel combustion device comprising: .