JP2000042127A - Fire extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make valve body mounting work to a mouthpiece efficient while avoiding structure becoming complicated in a fire extinguisher. SOLUTION: A valve body 13 is fitted into a mouthpiece 12 at the top of a container. An outer annular groove 47 and an inner annular groove 46 are respectively formed on the inner peripheral side of the mouthpiece 12 and on the outer peripheral side of the valve body 13. A C-type retaining ring 48 has a cutout 49 in one circumferential place and is elastically compressible in a radial direction. In mounting work of the valve body 13 to the mouthpiece 12, the C-type retaining ring 48 is elastically compressed and completely recessed into the inner annular groove 46, and then the valve body L3 is fitted into the mouthpiece 12. When the valve body 13 is fitted into the mouthpiece 12 until the inner annular groove 46 faces the outer annular groove 47, the C-type retaining ring 48 is opened by restoring force until the outer periphery abuts the bottom face of the outer annular groove 47 so as to be placed across the inner annular groove 46 and outer annular groove 47 thus fixing the mouthpiece 12 and the valve body 13 axially to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher,
More specifically, the present invention relates to a fire extinguisher having a structure capable of streamlining production.

[0002]

2. Description of the Related Art In a fire extinguisher, a base is attached to the top of a container, and a valve body is mounted on an inner peripheral side of the base to seal the base. In a conventional fire extinguisher, the valve body is attached to the base by screwing.

On the other hand, Japanese Utility Model Publication No. 50-2314 discloses a structure in which a valve body is attached to a base instead of screwing. According to this structure, an annular groove is formed in the inner periphery of the base, and a pair of semi-ring metal bands are freely retractable and closeable in the valve body so as to be urged in the expanding direction by the spring at one end. Attach to Then, the valve body is fitted into the base while the other end side of the half-ring metal band is closed and closed, and when the half-ring metal band reaches the annular groove of the base, it is expanded and the edge is fitted into the annular groove. ,
It is locked.

[0004]

The problems of the conventional fire extinguisher in which the valve body is screwed to the base are as follows. (A) A thread groove is required for the base and the valve body, and the processing becomes complicated. (B) Since the valve body is screwed into the base, it is necessary to rotate the valve body, and this rotation takes a long time. (C) A hose is connected to a predetermined portion of the valve body, and the hose is detachably attached to a mounting bracket on the outer surface of the container on the distal end side. It is necessary to orient the connecting portion in a predetermined direction, and due to this alignment, the valve body is displaced in the rotational direction, and the height of the valve body is corresponding to the displacement, and therefore, the connection to the lower end of the valve body is made. The height of the lower end of the siphon dripping into the container is shifted from the set value. Since the gap between the base of the base and the lower end of the siphon affects the fire extinguishing agent injection performance when the fire extinguisher is used, the amount of rotation of the valve body to the base fluctuates. Leads to.

[0005] In the fire extinguisher disclosed in Japanese Utility Model Publication No. 50-2314, although a thread groove can be omitted, a pair of half-ring metal bands are formed.
The spring must be attached to the valve body so as to be urged in the expanding direction, which complicates the structure. Further, after the valve body is attached to the base, the other end of the half-ring metal band can be closed and closed with a finger to easily release the lock of the valve body to the base. There is a possibility that the locking of the valve body may be released by mistake while the container is sealed in the container.

It is an object of the present invention to provide a fire extinguisher that overcomes the above-mentioned problems.

[0007]

The fire extinguisher (10) of the present invention has the following (a) to (d). (A) A container (11) containing a fire extinguishing agent inside (b) A container having an outer annular groove (47) extending in the circumferential direction on the inner periphery
(11) A cylindrical member (12) provided at the top of (11) (c) A sealing member (13) which has a circumferentially extending inner annular groove (46) on the outer periphery and is fitted into the cylindrical member (12) (d) A circumferential member It has a notch (49) in part and is elastically compressible inward in the radial direction.When the sealing member (13) is inserted into the cylindrical member (12), it is housed in the inner annular groove (46) by elastic compression and becomes When the groove (46) is located at the same position in the axial direction as the outer annular groove (47), it expands due to the restoring force to be in a radial position straddling the outer annular groove (47) and the inner annular groove (46). Elastic ring (48) that prevents axial relative movement of

The cross section of the elastic ring 48 is not limited to a rectangle, but may be another cross section such as a circle or a triangle. The cross section of the elastic ring (48) is such that when the elastic ring (48) is expanded to be in the radial position across the outer annular groove (47) and the inner annular groove (46), the cylindrical member (12) and sealing member (13)
The cylindrical member (12) and the sealing member (13) abut against the side walls of the outer annular groove (47) and the inner annular groove (46) with respect to the axial relative movement force.
Any cross-sectional shape that can prevent relative movement in the axial direction can be used.

In mounting the closing member (13) on the tubular member (12),
The elastic ring (48) is elastically compressed inward in the radial direction, and is pushed into the cylindrical member (12) while being housed in the inner annular groove (46) of the sealing member (13). Inner annular groove (4) of the sealing member (13)
When the sealing member (13) is fitted into the cylindrical member (12) until the position (6) axially coincides with the outer annular groove (47) of the cylindrical member (12), the elastic ring (48) exerts an elastic restoring force. To enter into the outer annular groove (47). In order to guarantee this partial penetration, it is not necessary for the elastic ring (48) to abut on the bottom surface of the outer annular groove (47) by the expanding force. Even if the elastic ring (48) does not come into contact with the bottom surface of the outer annular groove (47), it is sufficient that the elastic ring is sufficiently expanded and enters the outer annular groove (47). However, when the elastic ring (48) is in contact with the bottom surface of the outer annular groove (47) with the expanding force, the predetermined distance between the outer peripheral surface of the elastic ring (48) and the bottom surface of the outer annular groove (47) is higher. The elastic ring (48) for the outer annular groove (47) and the inner annular groove (46)
Of the elastic ring (48) can be suppressed, and the elastic ring (48) can be stabilized. In this manner, the elastic ring (48) is disposed across the outer annular groove (47) of the tubular member (12) and the inner annular groove (46) of the closing member (13), and the tubular member (12) and the closing member (13 The relative movement in the axial direction is prohibited. In this fire extinguisher (10), thread grooves are not required on the inner periphery of the cylindrical member (12) and the outer periphery of the sealing member (13), which simplifies the processing and the sealing member (13) for the cylindrical member (12). The mounting of the sealing member (13) is not a rotation of the sealing member (13), but a simple push of the sealing member (13) into the tubular member (12), and the mounting work time can be reduced. In addition, since the cylindrical member (12) and the sealing member (13) are relatively rotatable, the siphon in the fire extinguisher (10) in which the rotation position of the hose connection part to the sealing member (13) is specified.
While keeping the lower end height of (16) constant, the sealing member (13) can be directed in a predetermined direction with respect to the cylindrical member (12), and the semi-ring metal band is omitted, and the sealing member ( The structure of 13) can be simplified. Further, the elastic ring (48) is expanded by the elastic restoring force, and once fitted into the outer annular groove (47),
Elastic compression again in the radial direction by operating the handle etc.,
Since it cannot be easily stored in the inner annular groove (46), it is possible to prevent the sealing member (13) from being easily removed from the tubular member (12).

According to the fire extinguisher (10) of the present invention, the tubular member (1)
2) A tapered part that increases in diameter outward at the open end
(24) is formed.

When the sealing member (13) is fitted into the cylinder member (12) in order to mount the sealing member (13) on the cylinder member (12), the elastic ring (48) is elastically compressed inward in the radial direction. And the inner annular groove (46)
It is necessary to completely accommodate the elastic ring (48) inside the annular groove (46) of the sealing member (13) on the inner peripheral side, while slidingly contacting the tapered portion (24) on the outer peripheral side. Then, when the elastic ring (48) is pushed toward the back of the tubular member (12), the elastic ring (48) is gradually elastically compressed radially inward by the tapered portion (24), and is completely housed in the inner annular groove (46). Is done. Thus, when the sealing member (13) is mounted on the cylindrical member (12), it is easy to completely accommodate the elastic ring (48) in the inner annular groove (46) of the sealing member (13).

According to the fire extinguisher (10) of the present invention, the tubular member (1)
A first hole (52) communicating from the outer periphery of 2) to the outer annular groove (47) is formed in the cylindrical member (12), and the adhesive is supplied through the first hole (52) to the outer annular groove (47). And into the inner annular groove (46).

After the cylindrical member (12) and the sealing member (13) are prevented from moving relative to each other in the axial direction by the elastic ring (48). Hole (5
2) It is injected from outside the tubular member (12). This allows
The elastic ring (48), the outer annular groove (47) of the tubular member (12), and the inner annular groove (46) of the sealing member (13) are mutually bonded and fixed,
The relative rotation of the tubular member (12) and the closing member (13) is restricted, and the direction of the closing member (13) with respect to the tubular member (12) can be fixed to an appropriate one.

According to the fire extinguisher (10) of the present invention, the notch (49) of the elastic ring (48) has the outer annular groove of the first hole (52).
It is disposed in the inner annular groove (46) and the outer annular groove (47) so as to face the end on the (47) side.

The notch (49) of the elastic ring (48) has an outer annular groove.
In (47), the first hole (52) only needs to face the end on the outer annular groove (47) side, and the first hole (52) itself may be twisted and bent in the middle. .

The adhesive supplied from the first hole (52) into the outer annular groove (47) is applied to the elastic ring (48) facing the end of the first hole (52) on the outer annular groove (47) side. ) Flows into the inner peripheral side of the elastic ring (48) through the notch (49). Therefore, the inner annular groove
The supply of the adhesive to (46) becomes smooth.

According to the fire extinguisher (10) of the present invention, the tubular member (1)
2) a second hole for communicating the outside of (2) with the outside annular groove (47)
(53) is formed at the portion of the tubular member (12) that is substantially opposite to the first hole (52) in the radial direction.

The adhesive is supplied to the outer annular groove through the first hole (52).
(47) When injecting into the inner annular groove (46) and the outer annular groove (4
If air is trapped in 7), the injection pressure will be hindered by the sealing pressure. Due to the presence of the second hole (53), the air to be trapped is discharged to the outside through the second hole (53), and the outer annular groove (4) through the notch (49).
7) and the injection of the adhesive into the inner annular groove (46) is facilitated.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view of the top of the fire extinguisher 10. The container 11 is filled with a fire extinguishing agent, and a cylindrical base 12 is fixed on the top, and the inside of the container 11 communicates with the outside. The valve body 13 has a lower cylindrical portion having an outer diameter substantially equal to the inner diameter of the base 12, and the cylindrical portion is fitted into the inner peripheral side of the base 12. The annular groove 14 is formed at the lower end of the valve body 13, and the O-ring 15 is fitted into the annular groove 14,
It serves to maintain watertightness between the base 12 and the valve body 13. The siphon 16 has its upper end fitted to the inner periphery of the lower end of the valve body 13 and hangs down the container 11 along its center line,
The lower end has reached a position slightly higher than the bottom surface of the container 11. The valve member 17 includes a valve body 18 that can be seated from below on a valve seat 20 in the valve body 13 and a valve body 13 that extends upward from the valve body 18.
A rod that penetrates through the upper wall and projects above the valve body 13
It consists of 19. The O-ring 21 is fitted into the annular groove of the upper wall of the valve body 13 and slides on the rod 19 on the inner peripheral side,
Watertightness between the rod portion 19 is maintained. The retaining ring 22 is fixed to the upper end of the rod portion 19, and the compression coil spring 23 is contracted between the retaining ring 22 and the upper surface of the valve body 13 while being fitted to the rod portion 19, and the valve member 17 is compressed. Is urged upward. The chamfer 24 is provided on the inner periphery of the upper end opening of the base 12, and the chamfer 24
Has a conical side surface whose diameter gradually increases outward. The step portion 25 is formed at the upper end of the lower cylindrical portion of the valve main body 13, and the valve main body 13 is fitted into the base 12 beyond an axial position where an inner annular groove 46 and an outer annular groove 47 to be described later face each other. At times, it comes into contact with the upper surface of the valve body 13.

The lever device 28 has a lower lever 29 fixed to the valve body 13 and an upper lever 30 pivotally supported by the valve body 13 via a pivot pin 31. Stopper
The lower end 33 is swingably attached to an intermediate portion of the lower lever 29 via a pin 34 at the lower end. The lock pin 32
At both ends, penetrate the lever device 28 from top to bottom, and
It is inserted in 33 freely. Stopper 33 is a lock pin
When inserting 32, it is held in the upright position and the upper lever 30
Is prevented from swinging downward around the pivot pin 31, and when the lock pin 32 is pulled out, the lock pin 32 is tilted down by gravity to allow the upper lever 30 to swing toward the lower lever 29.

The connection fitting 39 is screwed to the side of the bulging portion on the upper end side of the valve body 13, protrudes from the valve body 13 in the horizontal direction, and has a hose 40 attached thereto. The hose 40 hangs substantially linearly along the side of the container 11, and is detachably fitted to a bracket (not shown) fixed to a lower portion of the valve body 13 at a lower end. I have. Therefore, the circumferential position of the valve body 13 with respect to the container 11 is defined so that the hose 40 is properly mounted on the bracket below the container 11.

When the fire extinguisher 10 is used, the lock pin 32 is pulled out of the upper lever 30, whereby the stopper 33 is tilted by gravity, and then the lower lever 29 and the upper lever 30 are gripped to hold the upper lever 30. When the 30 is pushed toward the lower lever 29, the valve member 17 moves toward the container 11 against the compression coil spring 23, and the valve element 18 separates from the valve seat 20. As a result, the fire extinguishing agent sealed under high pressure
It is injected from the nozzle at the tip of the hose 40 through the internal passage and the hose 40.

FIG. 2 is a longitudinal sectional view of the portion of the inner annular groove 46 and the outer annular groove 47 shown in a section passing through the notch 49 of the C-shaped retaining ring 48, and FIG. 3 is a perspective view of the C-shaped retaining ring 48. . Figure 1
In FIG. 3, an outer annular groove 47 is formed in an inner peripheral portion near an upper end opening of the base 12, and an inner annular groove 46 is formed in the valve main body 13.
Is formed on the outer peripheral portion of the valve body 13 so as to face the outer annular groove 47 in a state in which it is sufficiently fitted into the base 12.
The C-shaped retaining ring 48 has a rectangular cross section, has a notch 49 at one location in the circumferential direction, and is elastically compressible inward in the radial direction. The vertical and horizontal dimensions of the cross section of the C-shaped retaining ring 48 are d1 and d2, respectively. The vertical direction and the horizontal direction correspond to the vertical direction and the horizontal direction in FIG. 2, respectively, and correspond to the axial direction and the facing direction of the inner annular groove 46 and the outer annular groove 47, respectively. The width and depth of the outer annular groove 47 are defined as d3 and d4, respectively, and the width and depth of the inner annular groove 46 are defined as d5 and d6. The relationship between the dimensions is as follows: d1 = d3 = d5, and 0 <d4 ≦ d
2/2, d6 ≧ d2. The C-shaped retaining ring 48 is elastically compressible to the radially inner circumference by reducing the circumferential dimension of the notch 49 until it is completely accommodated in the inner annular groove 46,
Upon unloading, the diameter is restored until it is at least partially, and preferably completely, exposed from the inner annular groove 46. The inlet 52 and the air vent 53 are
And radially penetrates through the cylindrical wall of the base 12 at the same height as the outer annular groove 47.

Prior to fitting the valve body 13 into the base 12,
The height of the C-shaped retaining ring 48 is adjusted to the inner annular groove 46 while the circumferential position is set such that the notch 49 is located at a position corresponding to the inlet 52 in the circumferential direction of the valve body 13. Then, from this state, a C-shaped retaining ring is inserted into the chamfer 24 of the base 12.
The valve body 13 with 48 is fitted. The C-shaped retaining ring 48 elastically compresses radially inward as it goes deeper into the chamfer 24,
When the lower end of the chamfer 24 is reached, it is completely immersed into the inner annular groove 46. Then, when the inner circumference of the base 12 is slid and comes to the position of the outer annular groove 47, the base 12 is expanded by the radial restoring force. Since the free diameter of the C-shaped retaining ring 48 is larger than the diameter of the bottom surface of the outer annular groove 47, the expansion of the C-shaped retaining ring 48 is limited by contacting the outer peripheral surface with the bottom surface of the outer annular groove 47. Accordingly, the arrangement state is formed over the outer annular groove 47 and the inner annular groove 46. As a result, the base 12 and the valve body 13 are fixed to each other in the axial direction.

Next, an anaerobic adhesive is injected into the injection port 52 from outside the base 12. The anaerobic adhesive injected into the injection port 52 enters the outer annular groove 47 via the injection port 52, and is cut out.
49, the inner circumferential side of the C-shaped retaining ring 48, that is, the inner annular groove 46.
Enter inside. The air in the outer annular groove 47 and the inner annular groove 46 is discharged to the outside from the air vent 53 opposite to the injection port 52 with the injection of the anaerobic adhesive, and the anaerobic adhesive is removed from the outer annular groove 47 and The inside of the inner annular groove 46 is filled. The reasons for using an anaerobic adhesive as the adhesive are that (a) the curing speed is high, (b) it cures even at room temperature and does not affect the fire extinguishing agent or coating, and (c) the strength is large. . The injected anaerobic adhesive cures quickly and demonstrates adhesive strength,
The base 12, the valve body 13, and the C-shaped retaining ring 48 are fixed to each other.

FIG. 4 is a longitudinal sectional view of the inner annular groove 46 and the outer annular groove 47 when the C-shaped retaining ring 48 has a circular cross section. r is the radius of the circular cross section of the C-shaped retaining ring 48, d3, d
4 indicates the width and depth of the outer annular groove 47, and d5 and d6 indicate the width and depth dimensions of the inner annular groove 46. In this structure,
d3 = d5 = 2r, r ≦ d4 ≦ 2r, and d6 ≧ 2r. The C-shaped retaining ring 48 has an inner annular groove 46 and an outer annular groove.
It is located over 47. In the axial relative movement of the valve main body 13 with respect to the base 12, the C-shaped retaining ring 48 receives a vertical (up and down in FIG. 4) force from the edge of the inner annular groove 46 to move toward the bottom surface of the outer annular groove 47. Although it is urged toward the bottom surface, the contact with the bottom surface restricts the expansion, and the state where it is straddled over the inner annular groove 46 and the outer annular groove 47 is maintained. The displacement is prevented.

FIG. 5 shows a C-shaped retaining ring 48 having a triangular cross section.
Are arranged in the inner annular groove 46 and the outer annular groove 47. The cross section of the C-shaped retaining ring 48 is a right-angled triangle, and the upper surface of the C-shaped retaining ring 48 (the opening side of the base 12 is upward,
The base side of 12 is defined as below. ) And the inner peripheral surface form a right angle, and the slope of the C-shaped retaining ring 48 is directed downward and obliquely outward. The C-shaped retaining ring 48 is held in a completely immersed state in the inner annular groove 46 until the inner annular groove 46 coincides with the outer annular groove 47 when the valve body 13 is fitted into the base 12. groove
When 46 coincides with the outer annular groove 47, it expands, and the outer peripheral side protrudes into the outer annular groove 47. Thereafter, with respect to the axial movement in which the valve body 13 tries to pull up from the base 12,
The upper surface of the C-shaped retaining ring 48 abuts against the base 12 and the valve body 13 to prevent its axial movement. Also. Valve body
For axial movement of the valve body 13 to be further lowered than the base 12, the step 25 (FIG. 1) of the valve body 13
Abuts on the upper surface of the member to prevent its axial movement.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a top of a fire extinguisher.

FIG. 2 is a longitudinal sectional view of a portion of an inner annular groove and an outer annular groove shown in a section passing through a notch of a C-shaped retaining ring.

FIG. 3 is a perspective view of a C-shaped retaining ring.

FIG. 4 is a longitudinal sectional view of a portion of an inner annular groove and an outer annular groove when a C-shaped retaining ring has a circular cross section.

FIG. 5 is a view showing a state in which a C-shaped retaining ring having a triangular cross section is arranged in an inner annular groove and an outer annular groove.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 fire extinguisher 11 container 12 base (cylinder member) 13 valve body (blocking member) 24 chamfer (tapered portion) 46 inner annular groove 47 outer annular groove 48 C-shaped retaining ring (elastic ring) 49 notch 52 injection port (first) Hole) 53 Air vent (second hole)

Claims (5)

[Claims] (1) A container (1) containing a fire extinguisher therein.
1), (b) a cylindrical member (12) provided at the top of the container (11) having an outer annular groove (47) extending in the circumferential direction, and (c) an inner annular groove (46) extending in the circumferential direction. The outer periphery of the cylindrical member (1
A sealing member (13) fitted into 2), and (d) a notch (49) in a part of the circumferential direction, which is elastically compressible inward in the radial direction and is capable of sealing the cylindrical member (12). At the time of insertion of (13), the inner annular groove (46) is accommodated in the inner annular groove (46) by elastic compression.
When (46) is at the same position in the axial direction as the outer annular groove (47), it expands due to the restoring force and enters a radial position state straddling the outer annular groove (47) and the inner annular groove (46). A fire extinguisher characterized by having an elastic ring (48) for preventing relative movement of the two in the axial direction. 2. A fire extinguisher according to claim 1, wherein a tapered portion (24) whose diameter increases outward is formed at an open end of said tubular member (12). 3. A first hole (52) communicating from the outer periphery of the cylindrical member (12) to the outer annular groove (47) is formed in the cylindrical member (12), and an adhesive is provided in the first hole. The fire extinguisher according to claim 1 or 2, characterized in that the extinguisher is injected into the outer annular groove (47) and the inner annular groove (46) via (52). 4. The elastic ring (48) is provided with the notch (49).
Faces the end of the first hole (52) on the side of the outer annular groove (47) so that the inner annular groove (46) and the outer annular groove (4) are opposed to each other.
The fire extinguisher according to claim 3, wherein the fire extinguisher is disposed in (7). 5. The outside of the cylindrical member (12) and the outside annular groove.
(47) and a second hole (53) communicating with each other is provided in the first hole (53).
The fire extinguisher according to claim 3 or 4, wherein the fire extinguisher is formed at a position of the cylindrical member (12) substantially opposite to the radial direction with respect to the (52).