JPH0357256Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention relates to an internal inspection device for a fire extinguisher.

B. Prior art As an internal inspection device for this type of fire extinguisher,
Utility Model Publication No. 49-41676 is publicly known.

However, in the above-mentioned known internal inspection device, an inspection window is provided in a part of the container body or the top cover above the level of the top surface of the fire extinguishing agent filled in the container body, and the top surface of the fire extinguishing agent is inspected from above. I was about to check it out.

In particular, the above-mentioned known internal inspection device is intended only for cases where the extinguishing agent filled into the container body is powder. This is because if the extinguishing agent is powder, if the extinguisher is left unused for a long period of time, it will absorb moisture and solidify, losing its fluidity, and when a fire breaks out and the extinguisher is actually used, This was due to the fact that it was developed in response to numerous complaints from users that it was useless, and requests from the Fire and Disaster Management Agency for improvements.

By the way, the actual inspection method for the above-mentioned known internal inspection device is that the inspection window is provided above the level of the top surface of the extinguishing agent, so the internal condition cannot be determined by simply looking through the inspection window from above. Therefore, as described in the same publication, the entire fire extinguisher was lifted and turned over, and the entire fire extinguisher was shaken in that state to determine whether or not the powder extinguishing agent had absorbed moisture and hardened.

However, with the configuration where the inspection window is provided at the top,
Even if you try shaking the fire extinguisher upside down as shown above,
It is difficult to accurately judge the extent to which a powder fire extinguishing agent has absorbed moisture and hardened. In many cases, the powder extinguishing agent does not easily replace the extinguishing agent that was present in other areas or deep layers, and the extinguishing agent that was present in the same area remains forever, as shown in Figure 3 of the same bulletin. The above-mentioned problem was even more pronounced when the inner end of the transparent cap was extended downward to the level of the upper surface of the extinguishing agent.

Furthermore, with the above-mentioned known internal inspection devices, in the case of liquid or foam extinguishing agents, it is impossible to determine the amount inside, and it is impossible to tell whether the extinguishing agent has been used once or not.
In addition, even in the case of powder extinguishing agents, the solidification progresses from the upper surface to the inside, and gradually hardens and lowers the upper surface level.In this case, the depth of solidification and the position of the upper surface level are There were some problems, such as not being able to make any judgments.

In addition, conventionally, a circular inspection window installed on the side of the body is known, but this has a narrow vertical field of view and cannot accurately determine the depth of solidification progress or changes in the top surface level. In addition, there were drawbacks such as the fact that the inspection window protruded outward and was easily damaged.

C. Purpose of the invention This invention is designed to check the condition of the extinguishing agent (regardless of powder, liquid, or foam) filled in the container body, and to check whether the amount is appropriate or not, or whether it has been used once. The object of the present invention is to provide an internal inspection device for a fire extinguisher that can make judgments easily and accurately.

D. Structure of the device In this device, a vertically slit-shaped inspection window hole is formed in the body of the fire extinguisher container body, a transparent window plate is airtightly fitted and fixed to this window hole, and the transparent window plate is used to extinguish fire. It corresponds to the upper surface level of the drug and has a plurality of color-coded status indication lines as necessary.In particular, by locating the window hole just below the rear end of the activation lever and providing it at this position. , When inspecting, hold the handle fixed to the top lid facing the activation lever with your right hand, hold the bottom of the container with your left hand, lift it up, and then shake it in that state, making it very easy for the inspector to see. , the front where instructions for using the fire extinguisher, contents name, fill amount, fill date, and other efficacy notes are displayed (in the case of a fire extinguisher, it is normally operated by holding the handle with the right hand and holding the hose with the left hand) Therefore, in this operating state, the surface facing the operator's face is called the front, and the surface perpendicular to the direction in which the activation lever extends, that is, the left side when viewed from the rear end of the activation lever. ), so there is no problem with these displays. Moreover, since there are multiple color-coded status indication lines, it is easy to tell whether the amount is appropriate or not.
This makes it possible to clearly check whether the extinguishing agent has been used multiple times, and in the case of powder extinguishing agents, the depth of solidification and the level of reduction, allowing accurate judgment.

In addition, the inspection window is recessed to make it less susceptible to external damage, and is reinforced from the inside and outside with metal frame-like members.

E. Example In Fig. 1, 1 is a fire extinguisher container body, 2 is a starting device mounting block placed on the upper opening of the container body 1 via a packing 3, and 4 is a starting device mounting block 2 that is attached to the container body. A tightening ring is tightened and fixed to the upper opening of the starting device mounting block 2.
A pressurizing gas container vertically installed through an O-ring 6,
7 is a sealing plate breaking arrow that is slidably mounted on the starting device mounting block 2 facing the pressurizing gas container 5, and is kept airtight by an O-ring 8;
It has a sealing plate breaking arrow 9 at the lower end. Reference numeral 10 denotes a gas siphon pipe which, when the upper sealing plate of the pressurizing gas container 5 is broken, guides the pressurized gas from inside the sliding hole of the sealing plate breaking arrow rod 7 to the lower part of the container body 1. It is vertically installed on the device mounting block 2. Reference numeral 11 denotes a drug siphon tube, the upper end of which is vertically connected to the drug outlet 12 of the starting device mounting block 2, and the lower end connected to the container body 1.
A moisture-proof sealing plate 14 is attached via a holder 13. However, although this moisture-proof sealing plate 14 is destroyed by the pressure of ejecting chemicals when the fire extinguisher is started, it prevents moisture from entering from the outside until it is used. 15
is a cap attached to the drug outlet 12, and the proximal end of a hose 16 is inserted into this cap 15 and held by a hose clip 17. 18 is hose 16
A horn inserted into the tip of the clip 19
being held in a hug. Reference numeral 20 denotes a plug fitted to the outlet of the horn 18, and this plug 20 is connected to the horn 1.
8 to an integrally formed tethering band 21. Reference numeral 22 is a bifurcated hose clip fixed to the front surface a of the container body 1, and normally holds the distal end side of the hose 16.

23 is a handle, and the starting device mounting block 2
It is fixed by a fitting groove 24 and a coupling pin 25. Reference numeral 26 denotes an activation lever pivotally attached to the tip of the handle 23 with a pin 27. A part of this starting lever 26 has a hooking portion 2 that hooks with the upper end of the sealing plate breaking arrow rod 7.
6a, and the seal plate breaking arrow rod 7 can be raised and lowered by operating the activation lever 26.

Reference numerals 28 and 29 are locking rods that are pivotally connected to the handle 23 and the activation lever 26 by pins 30 and 31, respectively, and when these are engaged in the state shown in FIG. 32
A is inserted into the engaging portion of both the locking rods 28 and 29, thereby making it impossible to lower the starting lever 26. The safety stopper 32 has a locking pin portion 32b hooked onto a bifurcated clamp member 33 fixed to the upper surface of the activation lever 26, and has a ring-shaped handle portion 32c. The upper surface of the lever 26 is fixed with a sealing tape (not shown). 34 is an instruction label affixed to the handle portion 32c, and this instruction label 3
At 4, the words "pull out" are displayed.

A vertically elongated slit-shaped inspection window 35 as shown in FIGS. 1 and 2 is formed in the container body trunk 1a at a position directly below the rear end of the activation lever 26, and a transparent window 35 is formed in the window 35. A plate 36 is hermetically fitted and fixed.

The detailed structure of the above-mentioned inspection window is shown in FIGS. 2 to 4, and the window hole 35 is a flange portion formed by cutting the container body body 1a into a vertically long slit shape, pressing the periphery of the slit, and recessing the inside. 1b, and a metal frame-shaped patch plate 37 is placed on the inside of this flange portion 1b.
A frame-shaped packing 3 is provided on the outside of the flange portion 1b.
8 and a metal frame-shaped holding plate 39 are used to airtightly sandwich the transparent window plate 36 from the inside and outside, and the periphery is tightened and fixed with a plurality of holding screws 40.

The transparent window plate 36 is made of tempered glass or transparent plastic such as acrylic, and has pressure resistance so that it will not be damaged by the internal pressure inside the container body 1 when the fire extinguisher is activated, and its mounting structure also has the same pressure resistance. can be installed.

A plurality of color-coded status indication lines A, B, and C are displayed on the transparent window plate 36. for example,
Color-coded status indication lines such as blue, yellow, and red are applied in order from the top, and if the top level of the extinguishing agent in the container body 1 is below red line C, it is assumed that the agent has been used once or is severely solidified. If the extinguishing agent needs to be replenished or refilled, a sign to that effect will be displayed next to the window, etc., and if it is between the yellow line B and the red line C, it can be used, but if it is a powder extinguishing agent, it may solidify. Since the condition has progressed to a certain extent, the device displays a message to the effect that it should be shaken well before use, and if it is above blue line A, it is considered to be in good condition and a message to that effect is displayed. These status indication lines A, B, and C also serve as a guideline for the filling amount when filling, refilling, and refilling the medicine.
In the case of powder extinguishing agents, even if the top level at the time of inspection is below red line C, shaking the fire extinguisher well will loosen the solidification and the apparent volume may recover and return to yellow line B. In such cases, it can be determined that the product can be used as is, and if the solidification does not loosen even after shaking well and the level does not recover,
It displays the fact that it needs to be refilled.

In addition to displaying a plurality of status indication lines in different colors as described above, it is also possible to place only one status indication line in the center of the vertically long slit in the vertical direction, and to judge whether the status is above or below this line. In short, since the inspection window of the present invention has a vertical slit shape, in the case of powder extinguishing agents, it is possible to observe the top surface level, the depth of solidification, and the fluidity of the agent when shaken. Accurate judgments can be made, and even for liquid or foam fire extinguishing agents, the top surface level, degree of deterioration, and fluidity can be clearly checked over a wide range at a glance.

Effects of the invention According to the invention, by locating the inspection window directly below the rear end of the activation lever, an explanation part that plays an important role in an emergency, such as how to use a fire extinguisher, etc., is sacrificed. For internal inspection, hold the handle and lift it upwards from the front, the inspection window will be positioned right in front of the inspector, making it easy to inspect.You can also shake it up and down or turn it over. Even in this case, you will have to hold the handle with your right hand and the bottom with your left hand, but in this case as well, the inspection window is located in front of the inspector, making inspection very easy.

In addition, the inspection window has a vertical slit shape, allowing the status of the extinguishing agent to be observed over a wide range in the vertical direction.For example, it is possible to accurately grasp the depth of solidification and changes in the top surface level. be able to.

Furthermore, the inspection window is made by cutting the body of the container into a vertically long slit, and recessing the periphery of the slit to form a flange part that corresponds to the thickness of the window plate and outer holding plate. The outer pressing plate does not protrude from the body of the container body and can be aligned on almost the same plane, preventing damage from colliding with obstacles during fire extinguishing operations, transportation, and storage, and has a good appearance.

In addition, the vertically long slit-shaped resection part can be removed from the inside and outside.
Since a metal frame-shaped patch plate and a holding plate are attached for reinforcement, sufficient strength against internal pressure can be ensured.

Furthermore, the transparent window plate is provided with a status indicator line, making it easy to confirm the normal level, etc.

[Brief explanation of drawings]

Figure 1 is a longitudinal sectional front view of a fire extinguisher according to the present invention.
Figure 2 is an enlarged front view of the inspection window, Figures 3 and 4.
The figures are sectional views taken along the - line and - line in FIG. 2. 1... Container main body, 1a... Container main body trunk, 23
... Handle, 26 ... Starting lever, 35 ... Inspection window hole, 36 ... Transparent window plate, A, B, C ... Status indication line.

Claims (1)

[Scope of claim for utility model registration] A fire extinguisher that has a hose on the front of the upper part of the container body and a handle that extends rearward, and on this handle,
A fire extinguisher is equipped with an activation lever whose front end is pivoted and whose rear end can be pushed down toward the handle, and where instructions for use, fill amount, etc. are displayed on the side of the body of the container. A flange portion formed by cutting out a vertically long slit in the body of the container body at a position directly below the rear end side of the lever, and recessing the circumference of the cut portion by approximately the thickness of the window plate and the outer pressing plate; A metal frame-shaped backing plate that comes into contact with the inner surface of the flange portion and supports the periphery of the window plate from the inside, and a metal frame-shaped backing plate that is fitted into the outer recess of the flange portion and presses the periphery of the window plate from the outside. Frame-shaped packing is carried out from both the inside and outside using a metal frame-shaped holding plate, and the above-mentioned backing plate and holding plate, which are fitted into the recess of the flange part and fixed to the flange part with cap screws. 1. An internal inspection device for a fire extinguisher, characterized in that the transparent window plate is sandwiched between the container body and has a status indicator line corresponding to the upper surface level of the extinguishing agent filled in the container body.