JPH0512624Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to an automatic fire extinguishing system for a top-and-bottom wick type oil combustor, which has a structure for automatically raising a vibration-sensitive weight.

[Conventional technology]

A drive plate equipped with a return spring for fire extinguishing is linked to the operating lever that drives the wick up-and-down axis of the wick up-and-down type oil combustor, and the locking part of the drive plate and the stopper are engaged to prevent the vibration-sensitive weight from falling over. There is an oil combustor in which a moving stopper and a locking portion of a drive plate are separated, the drive plate is moved by the force of a return spring, and the core vertical shaft is moved to an extinguishing position via an operating lever.

On the other hand, when a vibration-sensitive weight falls over, if its center of gravity is low, it will immediately stand on its own even if it falls due to a shock during vibration, and if its center of gravity is high, it will remain tipped over, so there is no need to raise the vibration-sensitive weight separately. A manually operated set lever was installed. See Utility Model No. 55-26701.

In addition, instead of manually operating this set lever, there is a proposal known in Utility Model Application No. 114182/1983 to automatically operate the set lever when the core vertical axis is at the core lowering position to trigger a vibration-sensitive weight. .

[Problem that the invention attempts to solve]

When the vibration-sensitive weight falls over due to shock during vibration,
If the center of gravity is lowered so that it can stand on its own, it is necessary to reduce the swing angle of the weight, which reduces the movement of the push-up plate of the vibration-sensitive weight that pushes up the stopper, making it more likely to malfunction.

In addition, when the vibration-sensitive weight falls over, the structure that holds the fall position increases the displacement of the push-up plate of the vibration-sensitive weight, allowing the automatic fire extinguishing system to operate reliably, but since the weight maintains the fall position, A manually operated set lever is required to raise the vibration-sensitive weight, making it difficult to use. For this reason, Jitsubishi 53-
Items like No. 114182, in which the set lever is positioned so that it interlocks with the protrusion attached to the vertical axis of the core, and the set lever is operated in the core lowered position, are the same as independent vibration-sensitive weights and have improved operability. If the rotation angle of the vertical axis of the lead is 360 degrees or more, the set lever may be operated during the middle of lowering the lead, and the lead may not be lowered during the middle of lowering the lead. In addition, when the rotation angle of the vertical axis of the lead is small, it is difficult to operate the set lever to set the lead lowering position accurately, and the set lever is operated before the lead has been completely lowered, causing the weight to stand upright, which may cause the fire extinguishing time. The results varied greatly. Therefore, in order to solve the above-mentioned drawbacks, a complicated structure and high precision were required, and in the end, most of the products that operated the set lever automatically were not commercialized.

[Means for solving problems]

This idea is a proposal to automatically raise the fallen vibration-sensitive weight at the center lowering position of the core vertical axis, and it can be reliably implemented with a simple structure. 1 is the core vertical axis, 1' is The upper and lower arms are attached to the core vertical axis 1, and the operation plate 1 is attached to the core holding cylinder 13' of the core 13.
4 and the ends of the upper and lower arms 1' are interlocked, and the upper and lower arms 1' move the core holding cylinder 13' up and down via the operation plate 14 when the core vertical shaft rotates once. Reference numeral 2 denotes an operating lever for driving the core vertical shaft 1, 15 is a base plate of the core vertical device, 16 is a sliding hole provided in the base plate 15, and the operating knob 17 moves up and down along the sliding hole 16. , operate the operating lever 2.

3 is a drive plate that fits on the core vertical shaft 1 and rotates around the core vertical shaft 1; 3' is the operating lever 2 and the drive plate 3;
4 is a return spring provided on the drive plate 3 that rotates the operating lever 2 in the centering direction via the drive unit 3'; 5 is a return spring provided on the drive plate 3;
The locking shaft 6' of the stopper 6 and the locking portion 5 of the drive plate 3 hold the drive plate 3 against the accumulated force of the return spring 4.

8 is a vibration-sensitive weight, 7 is a base on which the vibration-sensitive weight 8 is mounted, 9 is an operating shaft of the vibration-sensitive weight 8, 10 is a push-up plate attached to the actuator 9, and the stopper 6 is a push-up plate attached to the push-up plate 10. Located above, the vibration-sensitive weight 8
When falling, the push-up plate 10 moves upward and lifts the stopper 6. For this reason, the engagement between the stopper 6 and the locking portion 5 is disengaged, and the drive plate 3 is rotated by the return spring 4.
The drive unit 3' rotates the operating lever 2 in the centering direction.

11 is a leaf spring attached between the base 7 and the stopper 6 and urges the stopper 6 in the direction of the push-up plate 10; 12 is a weight puller attached to the stopper 6 and whose tip is exposed to the operating lever 2; In the core lowering position, the operating lever 2 comes into contact with the lifting lever 12, and strongly rotates the stopper 6 in the direction of the push-up plate 10. For this purpose, the push-up plate 10 raises the vibration-sensitive weight 8 via the operating shaft 9.

[Explanation of action]

In this device having the configuration described above, in the core lowering position, the operating lever 2 is in contact with the lifting lever 12, and the stopper 6 strongly pushes the push-up plate 10 downward, so that the vibration-sensitive weight 8 is Standing upright. Then, when the operation knob 17 is pressed down, the operation lever 2
is pressed down, and the operating lever 2 rotates the drive plate 3 via the drive portion 3', so that the return spring 4 is extended. When the core vertical shaft 1 rotates by operating the operating lever 2 and the core 13 rises to the highest position,
At this time, the locking portion 5 of the drive plate 3 engages with the locking shaft 6' of the stopper 6, and the drive plate 3 is locked with the return spring 4 extended, so the operating lever 2 is maintained at the operating position. ing.

In this state, the oil combustor can perform ignition combustion, and since only the drive part 3' is interlocked with the operating lever 2 and the drive plate 3, the operating lever 2 can be returned manually, and the operating lever 2 can be moved back. The amount of combustion can be adjusted and extinguished by operation.

By the way, the stopper 6 is connected to the locking portion 5 of the drive plate 3.
The force pressing against the plate is weak because it is a leaf spring 11 installed between the base 7 and the stopper 6, and the vibration-sensitive weight 8 falls over due to a shock such as an earthquake during combustion in the oil combustor, causing the push-up plate 10 to rise. When the stopper 6 is moved, the stopper 6 is lifted slightly against the leaf spring 11. At this time, the locking portion 5 of the drive plate 3 disengages from the stopper 6, so the drive plate 3 is moved by the force of the return spring 4. Rotate with
The drive portion 3' of the drive plate 3 is in contact with the operating lever 2 and rotates the core vertical shaft 1 in the core lowering direction.

When the locking part 5 and the stopper 6 are disengaged, the leaf spring 11 tries to rotate the stopper 6 in the direction of the push-up plate 10, but when the vibration-sensitive weight 8 falls, the force of the weight 8 is exerted by the leaf spring. Stopper 6 against 11
As is clear from the fact that the vibration-sensitive weight 8 can be lifted lightly, it is impossible to make the vibration-sensitive weight 8 erect even if the force of the leaf spring 11 is tilted in the direction of the push-up plate 10.

In this invention, a weight lifting lever 12 is attached to the stopper 6 so that it comes into contact with the operating lever 2 in the center lowering position, so that the operating lever 2 forces the stopper 6 via the lifting lever 12 in the center lowering position. 10 direction of the push-up plate. Therefore, the stopper 6 was able to push down the push-up plate 10 with a force incomparably stronger than that of the leaf spring 11, and was able to raise the falling vibration-sensitive weight 8.

[Explanation of effects]

As described above, the core vertical axis 1 is
Even if the rotation angle of the core vertical shaft 1 is small, the operating distance of the operating lever 2 increases as it goes to the end, and the operating lever 2 makes it easy to detect the center lowering position. It is possible.
In this invention, a weight lifting lever 12 is attached directly to the stopper 6 that engages with the locking part 5 of the drive plate 3, and the end of the lever 12 is brought into contact with the operating lever 2 that is separated from the core vertical axis 1. By the force applied to the weight lifting lever 12 at the core lowering position, the stopper 6 was able to forcefully push down the push-up plate 10, thereby reliably lifting the weight.

Furthermore, during combustion in the oil combustor, the operating lever 2 and the weight lifting lever 12 are completely separated, so the force that causes the stopper 6 to rotate in the direction of the push-up plate 10 and the locking portion 5 of the drive plate 4 is weak. Using only the force of the leaf spring 11, the stopper 6 always operates accurately with a constant shock when the vibration-sensitive weight 8 falls, and the automatic fire extinguishing system can now be operated reliably.

At this time, the force of the return spring 4 rotates the lead vertical shaft 1 in the center lowering direction via the drive plate 3 and the operating lever 2, but the operating lever 2 does not move until the center is completely lowered.
Since the vibration-sensitive weight 8 is erected via the lifting lever 12 and the stopper 6, the operator does not need to perform any special operations to set the automatic fire extinguishing system in the same way as with the free-standing vibration-sensitive weight 8. It is something.

Furthermore, since the center of rotation of the operating lever 2 and the drive plate 3 is the core vertical axis 1, and the stopper 6 that engages with the drive plate 3 can be installed near the operating lever 2, it is only necessary to attach the weight lifting lever 12 directly to the stopper 6. This is a practical idea that allows the lever 12 and the operating lever 2 to be interlocked and can be manufactured extremely easily with almost no requirement for precision parts.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of this device, and FIG. 2 is a cross-sectional view of the same. 1... Core vertical axis, 2... Operation lever, 3... Drive plate, 3'... Drive section, 4... Return spring, 5...
Locking part, 6... Stopper, 7... Base, 8...
Vibration-sensitive weight, 9... Operating axis, 10... Push-up plate, 1
1... Leaf spring, 12... Lifting lever.

Claims (1)

[Scope of utility model registration request] An operating lever 2 that drives the core vertical axis 1, and a drive plate 3 that rotates around the core vertical axis 1 and contacts the operating lever 2 with a drive portion 3' are provided. Return spring 4 driven in the direction
and a locking portion 5 that engages with the stopper 6 against the driving force of the return spring 4, and a vibration-sensitive weight 8 attached to the base 7 that moves upwardly via an actuating shaft 9 in the event of a fall. A push-up plate 10 is installed to engage the push-up plate 10 and the stopper 6, and a leaf spring 11 is installed between the base plate 7 and the stopper 6 to bias the stopper 6 in the direction of the push-up plate 10. The automatic fire extinguishing system for an oil combustor is characterized in that a weight lifting lever 12 is attached to 6 to make contact with the operating lever 2 in the core lowering position and drive the stopper 6 in the direction of the push-up plate 10.