JPH054844Y2 - - Google Patents

Description

[Detailed explanation of the invention] a. Purpose of the invention (industrial application field) The pressurized fire extinguisher of this invention relates to the improvement of fire extinguishers used for initial extinguishing of fires, and is particularly applicable to small cylinders filled with driving gas. This is applied to pressurized fire extinguishers that incorporate this to prevent the mounting part of this small cylinder from loosening when not in use, making it effective as a fire extinguisher installed in places subject to small vibrations, such as ships or automobiles. It is.

(Prior Art) Fire extinguishers are widely installed in homes, ships, and automobiles for initial extinguishing of fires. Figures 3 and 4 show an example of a pressurized fire extinguisher that incorporates a small cylinder filled with gas for driving, among such conventional fire extinguishers.
A fixed handle 4 and an activation lever 6 rotatable about a horizontal shaft 5 are provided on the top of a lid 3 attached to the upper opening of the fire extinguishant container 1 with a cap nut 2. When using the fire extinguisher, pull out the safety pin 7 upwards and press down the starting lever 6 to release the firing pin 10, which is provided inside the lid 3 so as to be able to rise and fall freely, and whose upper end is connected to the starting lever 6. is pushed down, and the lower end of this firing pin 10 breaks the sealing plate of the small cylinder 11 attached to the lower surface of the lid 3.

This small cylinder 11 is filled with a high-pressure driving gas such as carbon dioxide gas, but when the sealing plate is broken as the firing pin 10 descends, this high-pressure driving gas flows through a gas passage (not shown). The extinguishing agent is spouted to the bottom of the extinguishing agent container 1 through the discharge pipe.

The driving gas spewed out to the bottom of the extinguishing agent container 1 is
The powder extinguishing agent filled in the container 1 is stirred to give fluidity to the extinguishing agent, and the pressure inside the extinguishing agent container 1 is increased. For this reason, the extinguishing agent in the extinguishing agent container 1 is pushed by the gas pressure in this container 1 and rises inside the siphon pipe 12 whose lower end is opened at the bottom of the extinguishing agent container 1, and further rises in the lid 3. The nozzle 9 at the end of the hose 8 passes through the extinguishing agent passage 13 inside the
erupts from.

(Problems to be Solved by the Invention) However, pressurized fire extinguishers constructed and operated as described above have conventionally had the following disadvantages.

That is, a small cylinder 11 filled with driving gas
is attached to the lower surface of the lid 3 by screwing and tightening a male screw cut into the outer circumferential surface of the upper end of the small cylinder 11 into the screw hole 14 provided on the lower surface of the lid 3. Because of this, if the fire extinguisher is installed in a place where it is exposed to small vibrations, such as in the trunk of a car or the engine room of a ship, this threaded part may loosen.
There was a risk that the small cylinder 11 would fall off from the bottom surface of the lid 3.

If the small cylinder 11 falls off from the bottom surface of the lid 3, even if the starting lever 6 is rotated to lower the firing pin 10, the seal of the small cylinder 11 will not be broken by the firing pin 10, and the cylinder will not be extinguished. Unable to start the device.

The pressurized fire extinguisher of the present invention has a simple structure and prevents a small cylinder from becoming loose, thereby solving the above-mentioned problems.

b. Structure of the invention (means for solving the problem) The pressurized fire extinguisher of the present invention, as shown in Fig. A fixed handle 4 and an activation lever 6 rotatable about a horizontal axis 5 are provided on the upper part of the lid 3 which is attached to the housing with a cap nut 2.

The upper end of a small cylinder 11 filled with driving gas is screwed into the screw hole 14 provided on the lower surface of the lid 3, as shown in FIG. is attached.

The lid body 3 is connected to the upper part of the screw hole 14.
A firing pin 10 with a sharp lower end is fitted in a cylindrical portion 19 provided inside the cylinder so as to be movable up and down. I'm letting you do it.

Furthermore, in the pressurized fire extinguisher of the present invention, firing pin 1
A cylindrical locking cylinder 16 made of rubber and having an outward flange 15 at its lower edge is provided below the cylinder 0, as shown in FIG. 2, with the outward flange in contact with the upper end surface of the small cylinder. .

As shown in FIG. 1, on the upper surface of the outward flange 15 at the lower end of the locking cylinder 16, the upper end is attached to the firing pin 10 or the lid body 3 (in the illustrated example, the lower outer peripheral surface of the firing pin 10). (Bottom surface of stop ring 18)
The lower end of the compression spring 17 is brought into elastic contact with the
The lower surface of the outward flange 15 is brought into elastic contact with the upper end surface of the small cylinder 11.

(Function) The function of the extinguisher when extinguishing a fire using the pressurized fire extinguisher of the present invention constructed as described above is exactly the same as that of the conventional pressurized fire extinguisher described above. be.

However, in the pressurized fire extinguisher of the present invention, a rubber locking cylinder 16 is attached to the upper end surface of the small cylinder 11.
Since the lower surface of the outward flange 15 formed at the lower end is in elastic contact, the small cylinder 11 is difficult to turn due to friction between the upper end surface of the cylinder 11 and the lower surface of the outward flange 15, and the pressurized fire extinguisher is not used in cars, ships, etc. Even when installed in a place subject to vibration, small cylinders 1
The screwed part 1 will not come loose inadvertently.

c. Effects of the invention The pressurized fire extinguisher of the invention is constructed and operates as described above, so it is possible to prevent the mounting part of the small cylinder filled with starting gas from loosening inadvertently.
The reliability of fire extinguishers installed in cars and ships can be improved.

[Brief explanation of the drawing]

Fig. 1 is an enlarged sectional view of part A in Fig. 4 showing the pressurized fire extinguisher of the present invention, Fig. 2 is a perspective view of the locking tube, and Fig. 3 is a side view showing the overall configuration of the pressurized fire extinguisher. , FIG. 4 is a longitudinal sectional side view corresponding to the upper part of FIG. 3 showing a conventional pressurized fire extinguisher. 1...Extinguishing agent container, 2...Bag nut, 3...Lid, 4...Handle, 5...Horizontal shaft, 6...Start lever, 7...Safety pin, 8...Hose, 9... Nozzle, 10... Firing pin, 11... Small cylinder, 12...
... Siphon pipe, 13 ... Fire extinguishing agent passage, 14 ... Screw hole, 15 ... Outward flange, 16 ... Loosening tube, 17 ... Compression spring, 18 ... Stop ring, 19 ... Cylindrical part.

Claims (1)

[Scope of utility model registration request] A small cylinder with an activation lever rotatable about a horizontal axis is provided on the top of the lid attached to the upper opening of the fire extinguishing agent container, and a screw hole provided on the bottom of the lid is filled with driving gas. By screwing the upper end opening, a small cylinder filled with driving gas is attached to the underside of the lid, and the cylinder is placed inside the lid in a continuous manner above the screw hole. In a pressurized fire extinguisher, a firing pin with a sharp lower end is fitted so as to be movable up and down, and the lower end of the firing pin is opposed to a sealing plate that closes the opening of a small cylinder. A cylindrical anti-loosening cylinder having an outer flange is brought into contact with the upper end surface of a small cylinder, and the lower end of a compression spring whose upper end is supported by a lid body is brought into contact with the outer flange. A pressurized fire extinguisher characterized by being in elastic contact with the upper end of the cylinder.