JP4603827B2 - Fire extinguisher safety device - Google Patents

Description

  The present invention relates to a safety device for a pressure-type or accumulator-type fire extinguisher, and more particularly to an improvement in the structure of a sealing member for confirming withdrawal of a safety stopper attached to a safety stopper.

  In this type of fire extinguisher, for example, as shown in FIGS. 8 and 9, a safety plug (safety pin) 10 is attached to the activation lever 5 attached to the upper head portion in order to prevent an emergency operation. . The safety stopper 10 is attached to the openings 15 and 16 provided in the starting lever 5 so that it can be inserted and removed from above, while the starting lever 5 is stretched between the starting lever 5 and the fixed lever 3 in an open state. The rocker 6 to be locked is interposed. When the safety stopper 10 is inserted into the activation lever 5 and engaged with the raising / lowering rod 6, the raising / lowering rod 6 is prevented from being tilted and is held in an upright posture that maintains the locked state of the activation lever 5. (For example, refer to Patent Document 1).

  Further, as shown in FIG. 9, the activation lever 5 is provided with a sealing paper 30 that is a sealing member for confirming the withdrawal of the safety stopper 10 across the protruding portion 14 of the safety stopper 10. . As shown in FIG. 10, when the safety stopper 10 is pulled out, the perforated portion of the sealing paper 30 is broken, and at the same time, the raising / lowering rod 6 is tilted to allow the starting lever 5 to be closed and rotated. The fire-extinguishing agent can be released by a turning operation.

Japanese Utility Model Publication No. 62-43571

However, in the above-mentioned fire extinguisher having the sealing paper 30 stuck on the start lever 5 across the safety stopper 10, the sealing paper 30 is subjected to vibration during transportation of the fire extinguisher, or is in contact with other objects during installation. Even though the safety stopper 10 is not pulled out, the perforated portion of the sealing paper 30 may be easily broken and lose its sealing function.
Further, once the safety stopper 10 is pulled out, the raising / lowering rod 6 falls, and when the safety stopper 10 is set again, the raising / lowering rod 6 is raised and the safety stopper 10 is inserted from the openings 15 and 16 of the activation lever 5 It is necessary to engage with the flange 6. However, when a person who is not familiar with these operations or a mischievous person pulls out the safety stopper 10, the safety stopper 10 is inserted into the openings 15, 16 of the activation lever 5 with the raising / lowering rod 6 falling down. Was misunderstood as a normal set state and left in that state. Under such a neglected condition, the fire extinguisher accidentally falls to close the start lever 5, or the user does not realize that the safety stopper 10 is in an incomplete set state. When the fire extinguisher was moved while holding 3, there was a case where an unexpected accident occurred in which the fire extinguishing agent was released.
For these reasons, troubles occurred between users and manufacturers.

  The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to provide a safety plug without losing the sealing function inadvertently during transportation like a conventional sealing paper. It is to provide a safety device for a fire extinguisher that can ensure the sealing function of the fire and thereby reduce the occurrence of troubles between the user and the manufacturer.

  The fire extinguisher safety device as a premise of the present invention includes a fixed lever (3) fixed to an upper head portion of a main body container filled with a fire extinguishing agent, and a pivot lever (4) arranged on the upper side of the fixed lever. The start lever (5) pivotally attached to the open / close pivot and the pivot lever (5) pivotably pivoted about the pivot (9) over a standing posture and a tilting posture with respect to the fixed lever, and a free upper end portion in the standing posture. (6a) is abutted against the lower surface side of the activation lever (5) to lock the activation lever (5) in the open state, and the free upper end portion (6a) is tilted to the activation lever (6a). 5) A raising / lowering rod (6) that allows the activation lever (5) to be closed and turned away from the lower surface side, and an opening (15), (16) provided in the activation lever (5) above this It can be inserted and removed from the stand up position, A safety stopper (10) that engages with the raising / lowering hook (6) to prevent the tilting hook (6) from tilting, and an overhanging part (14) formed integrally with the safety stopper and seated on the activation lever. ) And the sealing tool (20) of the safety stopper (10).

In addition, the invention according to claim 1 is the engagement hole provided in the overhanging portion (14) while the sealing tool (20) of the safety plug (10) covers the upper surface side of the overhanging portion (14). a cover portion and a projection (25) fitted to (24) (21), before Symbol actuation lever (5) which is fixed to the fixing section (22), the withdrawal of said safety plug (10) Accordingly, the cover portion (21) is pushed up by the overhang portion (14), and stress concentration is generated, so that the cover portion (21) is connected to a weak body portion (23) that is cut unusable. It is what you have.

In this case, the fixing portion (22) includes a leg portion (22a) inserted into and fixed to a fixing hole (26) provided in the activation lever (5), and the leg portion, as in the invention of claim 2. And a head portion (22b) which is formed larger than the diameter of the fixing hole (26) and can be prevented from being pulled downward.
Moreover, the said cover part (21) can be comprised in the thing provided with the cover side wall part (21b) which covers the both sides | surfaces of the said overhang | projection part (14) like invention of Claim 3.

According to the first aspect of the invention, the sealing tool adopts a mounting form in which the fixing portion thereof is fixed to the activation lever, and the fixing portion and the covering portion are covered by the overhanging portion as the safety stopper is pulled out. Since it is formed in a shape that is connected by a weak body part that is stressed by being pushed up and cut so that it cannot be reused, the weak part is inadvertently broken due to vibrations during transportation like conventional sealing paper The sealing function can be reliably maintained without losing the sealing function. Therefore, trouble occurrence between the user and the manufacturer can be reduced.
In addition to the above effect, the cover portion is configured to include a protrusion that covers the upper surface side of the overhang portion and fits into an engagement hole provided in the overhang portion. It is possible to reliably prevent the cover part from being inadvertently detached from the overhanging part of the safety plug at times, and when the safety plug is pulled out, the overhanging part causes the cover part of the seal to engage the projection and the engagement hole. It is pulled upward through the joint part, and tensile stress concentrates on the weak body part, and it becomes easy to cut.

  According to the second aspect of the present invention, the fixing portion of the sealing tool is provided at the upper end of the leg portion, and is fixed to the fixing hole provided in the starting lever so that the fixing portion is fixed upward. In addition to the above effects, the sealing tool can be easily and reliably fixed to the starting lever. It is possible to prevent the seal from coming off from the start lever when the fire extinguisher is moved.

  If the fixed part or the cover part falls between the start lever and the fixed lever or the upper end of the valve after the cutting, the start lever is closed and the rotation operation is hindered thereafter. However, if the fixed part is fixed to the starting lever so that it can be pulled down downward by the head as described above, the fixed part may fall between the starting lever and the fixed lever or the upper end of the valve after cutting. As a result, there is an effect that it is possible to solve the trouble of the closing operation of the start lever that is easily caused by the fall.

  According to the invention of claim 3, since the cover part is configured to have a cover side wall part that covers both side surfaces of the overhanging part, in addition to the above effects, the cover part is provided when the fire extinguisher is moved. There is also an effect that it is possible to reliably prevent inadvertent removal from the overhanging portion of the safety stopper.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a fire extinguisher safety device according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a state immediately after the safety stopper is pulled out, corresponding to FIG. 1, and FIG. Is a plan view of the sealing tool, (b) is a view taken in the direction of arrow A in FIG. 3 (a), and (c) is a cross-sectional view taken along line BB in FIG.

In FIG. 1, the overall basic configuration of a fire extinguisher that is the subject of the present invention is the same as a conventional standard type pressurized fire extinguisher (see, for example, FIG. 8) or a pressure accumulating fire extinguisher. That is, a valve 1 is attached to an upper head portion of a main body container (not shown) filled with a fire extinguishing agent, and a valve rod 2 is incorporated in the valve 1 so as to be movable up and down. The valves rod 2, the case of a pressurized fire extinguisher, pressurization gas container to a pressure source which emits extinguishing agent is fixed to the lower surface side of the valve 1 in the body vessel (not shown), sealing plates ( In the case of a pressure accumulating fire extinguisher, a siphon pipe (not shown) connected to the inlet side of the valve 1 pipe (not shown) and the valve 1 pipe are used. It is used for a valve rod for opening and closing a communication state with a fire extinguisher hose (not shown) connected to the outlet side of the gas.

A fixing lever 3 in the upper part of the valve 1, this is opposed deployed above the fixing lever 3, starting lever the front end side of the base to the base of the front end by the pivot 4 of the fixing levers 3 pivotally attached rotatably 5 is provided. The activation lever 5 is formed in a cross-sectional groove shape having an upper wall portion 5a and both side wall portions 5b and 5b. The upper end portion of the valve rod 2 is locked to a part 5 c near the base portion of the activation lever 5.

In order to prevent inadvertent operation of the activation lever 5, a raising / lowering rod 6 is provided. The raising / lowering rod 6 is a plastic molded product such as polyacetal resin or polyamide resin having excellent wear resistance. The upper end is a free upper end portion 6a, and the plug receiving grooves 7 and 8 are vertically arranged in the vertical direction. The lower end base portion 6 b is pivotally attached to the fixed lever 3 with a pivot 9. Thus, the raising / lowering rod 6 has a standing posture in which the free upper end portion 6a abuts against the lower surface of the upper wall portion 5a of the activation lever 5 to lock the activation lever 5 in the open posture, and the activation lever 5 is closed. free upper end 6 a with the dynamic is rotatable in pivot 9 around over the inclined posture to fall on the fixing lever 3 while sliding the lower surface of the upper wall portion 5a.

  A safety stopper 10 for preventing the riser 6 from falling includes a straight insertion pin 11a made of a metal rod and an annular portion 11b bent continuously in an annular shape at the upper end of the insertion pin 11a. The plastic handle 12 is integrally formed on the annular portion 11b. On the lower surface side of the handle 12, an insertion pin 13 shorter than the insertion pin 11a is integrally protruded downward on the front side of the insertion pin 11a so as to face the insertion pin 11a in parallel. A projecting portion 14 seated on the upper wall portion 5a of the activation lever 5 is integrally formed on the front side of the lower end of 12 so as to project forward. The safety plug 10 has the insertion pins 13 and 11 a inserted into the openings 15 and 16 provided in the front and rear of the upper wall portion 5 a of the activation lever 5 from above and inserted into the plug receiving grooves 7 and 8 of the raising and lowering lever 6. By engaging, the tilting cage 6 is prevented from tilting.

  In the fire extinguisher having the above-described configuration, the present invention includes a cover 21 that covers the upper surface side of the overhanging portion 14 of the safety plug 10 and the start lever 5 in front of the overhanging portion 10. The fixing portion 22 fixed to the wall portion 5a is characterized in that it is formed in a shape connected by a weak body portion 23 that is unreusably cut due to stress concentration caused by the withdrawal of the safety stopper 10.

  The sealing tool 20 is a plastic molded product, and as shown in FIGS. 1 and 3A to 3C, the covering portion 21 is a covering upper wall that covers the upper surface of the overhanging portion 14 of the safety stopper 10. It is formed in a cross-sectional groove shape having a portion 21a and cover side wall portions 21b and 21b that are continuously provided downward from both left and right ends of the cover upper wall portion 21a and cover both side surfaces of the overhanging portion 14. On the inner surface of the cover upper wall portion 21a, a protrusion 25 that fits into the engagement hole 24 provided in the overhang portion 14 is integrally provided.

  The fixing part 22 of the sealing tool 20 is provided at the upper end of the leg part 22a and fixed at the upper end of the leg part 22a. It is formed in a shape having a head portion 22 b having a diameter larger than the diameter of the hole 26. The leg portion 22a is formed in a medium-bulged shape with a maximum diameter portion slightly larger than the fixed hole 26, and is formed so as to be able to expand and contract with a split groove 27. Accordingly, the leg portion 22a of the sealing tool 20 is easily inserted into the fixing hole 26 of the starting lever 5 while being elastically reduced in diameter, and after the insertion, the leg portion 22a is expanded in diameter by an elastic restoring action, and the middle swelling portion. Can be engaged with the upper end of the fixing hole 26 in a state of being prevented from being pulled upward. Preventing the fixing portion 22 from being pulled downward is achieved by a head portion 22 b formed larger in diameter than the fixing hole 26.

  And the weak body part 23 which connects the front-end part of the cover part 21 and the fixing | fixed part 22 provides the slit 28 between the head 22b and the cover upper wall part 21a, and it fixes to both sides of the slit 28 by providing this slit 28. The connecting portion connecting the portion 22 and the covering portion 21 (location corresponding to the connecting portion of the covering side wall portions 21b and 21b with the fixing portion 22) is left, and this connecting portion is used as the weak body portion 23. The weak body portion 23 shown in FIG. 3 (c) is formed to have the same height as the height h of the cover side wall portion 21b. In addition, the weak body portion 23 of the other sealing tool 20 shown in FIG. As shown in FIG. 5 and FIG. 6, the cover side wall portion 21 b is formed to be thinner than the height h of the covering side wall portion 21 b, or a notch 29 on the upper side or the lower side of the connection portion with the head portion 22 b of the weak body portion 23. If the safety plug 10 is formed to have a more dangerous cross section, the concentration of tensile stress or bending stress is greatly generated in the weak body portion 23 as the safety stopper 10 is pulled out, and the portion can be more easily cut.

  According to the fire extinguisher safety device having the above-described configuration, the sealing device 20 has the fixing portion 22 fixed to the start lever 5, so that it has a sealing function that is inadvertently broken due to vibration during transportation as in the case of conventional sealing paper. There is no loss, and the sealing function can be reliably maintained.

In the sealing tool 20, the fixing portion 22 is fixed to the upper wall portion 5 a of the activation lever 5, the cover portion 21 covers the upper surface side of the overhanging portion 14 of the safety stopper 10, and the projection 25 is engaged with the engagement hole 24. Therefore, as shown in FIG. 2, when the safety plug 10 is pulled out, the cover 21 is pushed up by the overhanging portion 14 that is pulled up together with the safety plug 10, and the protrusion 25 and the engagement hole 24 are interposed through the engagement portion. As a result, the weak body part 23 is cut and the fixing part 22 and the cover part 21 are separated. As a result, the start lever 5 can be closed and used for fire extinguishing work.
The cover part 21 separated from the fixing part 22 is pulled up while remaining on the overhanging part 14 of the safety stopper 10, and the fixing part 22 is left on the start lever 5 side. Therefore, the cover portion 21 and the fixing portion 22 do not fall between the starting lever 5 and the fixing lever 3 or the upper end of the valve 1, and the closing operation of the starting lever 5 is not hindered.

  In the said Example, although the cover side wall part 21b and the processus | protrusion 25 are provided in the cover part 21, it is not restricted to this, You may provide only one or neither.

  FIG. 7 shows an embodiment in which the covering portion 21 of the sealing tool 20 is provided with the covering side wall portions 21 b and 21 b but not with the protrusions 25. In the case of this embodiment, as the safety stopper 10 is pulled out, the tip of the overhanging portion 14 pulled up together with the safety stopper 10 pushes up the covering portion 21 while sliding the lower surface of the covering portion 21, and thereby the covering portion 21 is weakened. Since the bending stress is concentrated on the weak body portion 23, the weak body portion 23 is easily cut. Since other configurations are configured in the same manner as in the above-described embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.

It is a vertical side view of the safety device of the fire extinguisher which shows one Example of this invention. It is a vertical side view which shows the state immediately after removing a safety stopper corresponding to FIG. (A) is a top view of a sealing tool, (b) is the A arrow directional view in Fig.3 (a), (c) is the BB sectional drawing in Fig.3 (a). It is a side view of the sealing tool of another example. Furthermore, it is a side view of the sealing tool of another example. Furthermore, it is a side view of the sealing tool of another example. It is a vertical side view which shows the safety device of the fire extinguisher of another Example corresponding to FIG. It is a vertical side view of the safety device of the fire extinguisher of a prior art example. It is a side view of the safety device of the other fire extinguisher example. FIG. 10 is a side view showing the safety device of the fire extinguisher of FIG. 9 in a state immediately after the safety plug is removed.

3 Fixed lever 4 Axis
Reference Signs List 5 start lever 6 tilting lever 6a free upper end 9 pivot 10 safety plug 14 overhanging portion 15, 16 opening 20 sealing tool 21 covering portion 21a covering upper wall portion 21b covering side wall portion 22 fixing portion 22a leg portion 22b head portion 23 weak body Part 24 Engagement hole 25 Projection 26 Fixing hole

Claims (3)

A fixed lever fixed to the upper head portion of the main body container filled with a fire-extinguishing agent, an activation lever arranged to be opposed to the upper side of the fixed lever and pivotably mounted around the pivot, and to the fixed lever It is pivotally mounted around the pivot axis in a standing posture and a tilting posture, and in this standing posture, the free upper end is brought into contact with the lower surface side of the activation lever to lock the activation lever in the open state. In the tilting posture, the free upper end portion is separated from the lower surface side of the activation lever to allow the activation lever to be closed and rotated, and the opening provided in the activation lever is detachably inserted from above. A safety stopper that engages with the upright / downright side of the standing posture by the insertion thereof, prevents the tilting of the upright side, an overhanging portion that is formed integrally with the safety stopper and seats on the starter lever, and the safety Plug closure When, in the safety device of the extinguisher having a
It said sealing member includes a cover portion which comprises a projection which fits into engagement hole formed in the projecting portion covers the upper surface of the projecting portion, and a fixing portion fixed to the front Symbol actuation lever The cover portion is pushed up by the overhanging portion when the safety plug is pulled out, and is formed in a shape connected by a weak portion that is cut unusable due to stress concentration. Fire extinguisher safety device.   The fixing portion is provided at the upper end of the leg portion that is inserted and fixed in the fixing hole provided in the starting lever, and is formed larger in diameter than the diameter of the fixing hole so that it can be prevented from being pulled downward. The fire extinguisher safety device according to claim 1, wherein the safety device is formed in a shape having a head. The fire extinguisher safety device according to claim 1 or 2, wherein the covering portion includes a covering side wall portion that covers both side surfaces of the overhanging portion .

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