JPS6339535Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wick up-and-down mechanism for a liquid fuel combustion device such as an oil stove.

[Technical background of the invention]

In kerosene stoves, the gear at the tip of a gear shaft held in a fixed tank is generally engaged with a rack provided in a wick holder that holds the wick, and the wick is moved up and down by rotating the gear shaft. In addition, if an earthquake or external shock is applied to the kerosene stove while the wick is raised and burning, the wick will automatically lower and extinguish the fire. A core lowering spring that operates in conjunction with the seismic sensor is usually provided around the gear shaft.

In a wick up/down mechanism that employs such a wick lowering spring, in order to prevent the wick lowering spring from affecting the vertical movement adjustment of the wick under normal conditions,
Japanese Patent Laid-Open No. 2001-1999 Sho proposed a device in which, once a reversing force was applied to the wick lowering spring when the wick was raised, the gear shaft could be easily rotated independently of the wick lowering spring to adjust the vertical movement of the wick. 56−
34007 is proposed.

[Problems with background technology]

In the case of the conventional wick up/down mechanism mentioned above, the height of the wick can be set at any position from the highest to the lowest position, so there is a possibility that the wick may be used too low.
If you do this, the overall firepower will be reduced, but the fire pan will become hot and tar will adhere to the fire pan and the top of the wick, which may cause a strange odor or cause the top of the wick to thicken The drawback was that the wick became difficult to lower as it got older.

[Purpose of invention]

The present invention was devised in view of the above-mentioned points, and it limits the vertical adjustment range of the wick within a certain range after a reversing force is accumulated in the wick lowering spring due to the rise of the wick. This is intended to prevent the use of excessively low levels.

[Summary of the idea]

In this invention, the wick provided between the inner cylinder and the outer cylinder for guiding the wick is moved up and down by the rotation of the gear shaft, and when the gear shaft is rotated in the wick upward direction, the ratchet plate is rotated and the wick is rotated. The reverse rotation of the ratchet plate is stopped by a locking body and the force is stored in the core lowering spring, and when the locking body is removed from the ratchet plate, the force of the core lowering spring is used to prevent the rotation of the ratchet plate from occurring via the ratchet plate. In a core up-and-down mechanism for a liquid fuel combustion device that rotates a gear shaft in a core lowering direction, the ratch plate is provided with a fixed locking portion and an elastic resistance locking portion, and the above-mentioned locking portion is located between the locking portions. A driving pin is provided protruding from the gear shaft, and when the gear shaft rotates in the direction of raising the core, the driving pin pushes the fixed locking part and rotates the ratchet plate in the direction of storing the energy of the core lowering spring. At the same time, during use, the range of rotation of the gear shaft is regulated by the respective locking parts and the drive pin located between them, thereby regulating the range of adjustment of the firepower.When extinguishing a fire, the drive pin is moved to the resistance position. The gear shaft is characterized in that the gear shaft is rotated in the core downward direction by passing through the stop portion against the resistance force thereof.

[Example of idea]

Next, the present invention will be specifically explained based on embodiments shown in the drawings.

FIG. 1 shows a part of a kerosene stove, 1 is a fixed tank, and an inner cylinder 2 for guiding the wick is erected from the bottom of the fixed tank 1, and the inner cylinder 2 is connected from the top of the fixed tank 1. An outer cylinder 3 for guiding the wick to the outside of the lamp is installed upright, and a cylindrical lamp wick 4 is fitted between the inner cylinder 2 and the outer cylinder 3 so as to be vertically movable. Fire pans 2a and 3 formed inside the upper part of the inner cylinder 2 and outside the upper part of the outer cylinder 3
A dual-tube type combustion cylinder 5 is mounted on a.

Further, a cylindrical wick holder 6 is fitted onto the outer circumferential side of the lower part of the lamp wick 4, and the lamp wick 4 is held in the wick holder 6 through a number of projections (not shown) provided on the inner circumferential side of the wick holder 6. At the same time, a rack 7 is attached to the outer peripheral side of one side of the lead holder 6.

Further, an outer end portion of a cylindrical mounting fitting 8 is fixed to one side of the fixed tank 1, and a gear portion 9 that meshes with the rack 7 at its tip is provided inside the mounting fitting 8. Gear shaft 1 provided
0 is inserted from the outside, and this gear shaft 10
A collar 11 for positioning is provided on the outer periphery of the inner side of the
A seal 12 for preventing oil leakage, a seal washer 13, and a seal spring 14 are fitted in this order, and a positioning bolt 16 having a shaft through hole 15 is fitted. It is screwed onto the circumferential side.

Note that FIG. 1 shows a state in which the lamp wick 4 has risen completely, that is, a state in which ignition and combustion are possible. In this state, when the gear shaft 10 is rotated counterclockwise, the gear relative to the rack 7 Part 9
This meshing relationship allows the lamp wick 4 to be lowered via the wick holder 6.

Further, a spring case 17 made of synthetic resin is fitted on the outer side of the gear shaft 10, located on the outer side of the positioning bolt 16, that is, on the outer side of the fixed tank 1, and the inside of this spring case 17 is A coiled center lowering spring 18 is located and housed on the outer peripheral side of the gear shaft 10, and one end of this center lowering spring 18 is connected to the positioning bolt 16.
The other end is locked to a notch engaging portion 20 provided on one side of the spring case 17.

Further, a coil-shaped holder spring 21 is interposed between the inner surface of the spring case 17 and the outer surface of the positioning bolt 16, located on the inner peripheral side of the core lowering spring 18.

As shown in FIGS. 2 to 4, a synthetic resin ratchet plate 22 integrally molded with the spring case 17 is provided on the outer peripheral side of the spring case 17. Above spring case 1
A notched recess 23 is provided on one outer side of the pin 7, and a pin receiving metal fitting 24 and a pin receiving leaf spring 25 are fitted into this notched recess 23 and fixed with screws 26. A fixed locking portion 24 provided on the pin receiving fitting 24 by
A and a resilient F-shaped resistance locking portion 25a provided on the pin receiving plate spring 25 are integrally provided with the ratchet plate 22 and protrude outward from the spring case 17, and each of these locking portions Parts 24a, 25a
A driving pin 2 is located between the gear shaft 10 and the gear shaft 10.
7 is installed upright by screwing.

Reference numeral 28 denotes a lever connected to a vibration sensor and a fire extinguishing button (not shown), and the tip of this lever 28 has a serrated protrusion 2 on the outer periphery of the ratchet plate 22.
A locking pin 28a is provided as a locking body that engages with the ratchet plate 2a to restrict the counterclockwise rotation of the ratchet plate 22, and the lever 28 is always attached to the locking pin 28a.
The projecting piece 22a is biased in the direction of engagement.
The locking pin 28a is designed to sequentially move along the sawtooth protrusion 22a when the ratchet plate 22 is rotated clockwise.

Note that 29 is a dial knob, which is fitted onto the outer end of the gear shaft 10.

Next, the effect of the above configuration will be explained.

When raising the lamp wick 4, use the dial knob 29.
When the gear shaft 10 is rotated clockwise via the drive pin 27 fixed to the gear shaft 10,
As shown by the solid line in Fig. 3, the pin receiving bracket 2
As a result, the spring case 17 itself also rotates clockwise while accumulating a reversing force in the core lowering spring 18. The serrated protrusion 22a of the ratchet plate 22 and the locking pin 28a of the lever 28 sequentially engage to restrict the counterclockwise rotation of the spring case 17, and the lamp wick 4 rotates until it is fully raised. become.

In this state, it is possible to ignite the lamp wick 4 and burn kerosene, but the heating power during combustion can be adjusted only when the lamp wick 4 is at its highest position, i.e. when the drive pin 27 is at the third position. As shown by the solid line in the figure, the dial knob 29 is in contact with the fixed locking part 24a of the pin receiver 24, and from this state.
The gear shaft 10 is rotated counterclockwise through the drive pin 27 while the driving pin 27 is in contact with the resistance locking portion 25a of the pin receiving leaf spring 25, as shown by the two-dot chain line in FIG. The range of rotation of the gear shaft 10 regulated by the respective locking portions 24a and 25a is made to match the adjustment range of heating power, that is, the proper twisting and firing range.

There are two ways to extinguish the fire by lowering the wick 4 completely to the lowest position. One method is to operate the extinguish button (not shown) and press the lever 2.
8 in the direction opposite to the direction in which it is biased, and in this way, the locking pin 28a separates from the serrated protrusion 22a of the ratchet plate 22, and the reversal stored in the core lowering spring 18 Due to the force, the spring case 17 rapidly rotates counterclockwise, whereby the fixed locking portion 24a of the pin receiver 24 pushes the drive pin 27 and rotates the gear shaft 10 counterclockwise. The lamp wick 4 will descend to the lowest position.

Note that even if a seismic sensor (not shown) is activated while the lamp wick 4 is raised, the lever 28 is operated in the opposite direction to the biased direction, and the wick lowering spring 18 is activated in the same manner as described above. As a result, the lamp wick 4 descends to the lowest position.

Another method is to rotate the gear shaft 10 counterclockwise via the dial knob 29, so that the drive pin 27 engages the resistance locking portion of the pin receiving plate spring 25 as shown by the two-dot chain line in FIG. When it comes into contact with 25a, apply more force to the gear shaft 1.
0 counterclockwise, thereby pushing the resistance locking part 25a into the inside of the spring case 17 with the drive pin 27 and passing it through, and subsequently lowering the gear shaft 10 and the lamp wick 4 to the lowest position. It rotates counterclockwise until it does. In this method, when raising the lamp wick 4 again, there is no need to store reversing force in the wick lowering spring 18.
The user's operating force can be reduced, and furthermore,
Due to long-term use or the use of inferior kerosene, tar etc. may adhere to the wick 4, causing the wick lowering spring 18
When the lamp wick 4 does not fall completely with only the reversing force of
Even when it cannot be removed from the serrated protrusion 22a of No. 2,
The fire can be extinguished by lowering the wick 4.

[Effect of idea]

As described above, according to the present invention, the vertical movement range of the lamp wick can be set within a certain range after the reversing force is accumulated in the wick lowering spring due to the lifting of the lamp wick, thereby lowering the lamp wick. This prevents the fire pan from becoming too hot and causing tar to adhere to the fire pan and the top end of the wick, and prevents the generation of strange odors and the top end of the wick from becoming thick. Moreover, incomplete combustion can be prevented, and
The lifespan of the appliance can be extended, and in addition, extinguishing can be done by the user's manual operation as well as by the wick lowering spring. It is possible to extinguish the fire even when the system is disabled, and furthermore, by manually extinguishing the fire without relying on the core lowering spring, it is possible to reduce the operating force when using it again.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a vertical sectional view of a part of the kerosene stove, Fig. 2 is an exploded perspective view of its main parts, Fig. 3 is a front view of its main parts, and Fig. 3 is a front view of its main parts. 4
The figure is a plan view of the main part. 2, 3... Inner tube and outer tube for core guide, 4... Light wick, 10... Gear shaft, 18... Core lowering spring, 22... Ratchet plate, 24a... Fixed locking part, 25a... Resistance locking portion, 27... Drive pin,
28a...Latching pin as a locking body.

Claims (1)

[Scope of Claim for Utility Model Registration] The wick provided between the inner cylinder and the outer cylinder for guiding the wick is moved up and down by the rotation of the gear shaft, and the ratchet plate is rotated when the gear shaft rotates in the wick upward direction. At the same time as the latch plate moves, the rotation in the opposite direction of the ratchet plate is stopped by a locking body to store force in the core lowering spring, and when the locking body is removed from the ratchet plate, the ratch is caused by the biasing force of the core lowering spring. In a device for rotating the gear shaft in the core lowering direction via a plate, the ratchet plate is provided with a fixed locking portion and an elastic resistance locking portion, and a fixed locking portion and an elastic resistance locking portion are provided between the locking portions to rotate the gear shaft. a driving pin is provided in a protruding manner, and when the gear shaft rotates in the core rising direction, the driving pin pushes the fixed locking portion to rotate the ratchet plate in the direction in which the core lowering spring is loaded; During use, the rotation range of the gear shaft is regulated by the respective locking portions and the drive pin located between them, thereby regulating the adjustment range of the firepower.When extinguishing a fire, the drive pin is connected to the resistance locking portion. A wick up-and-down mechanism for a liquid fuel combustion device, characterized in that the gear shaft is rotated in a wick downward direction by passing the gear shaft against the resistance force thereof.