JP2003109143A - Smoke applying tester of smoke sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easily attachable/detachable to/from a gas cylinder, to prevent the outward deformation of the fitting part of a hood and to prevent the damage of an operation wire. SOLUTION: Screw parts 16a and 31a which are mutually screwed are disposed in the main body 1 of a smoke applying tester and a gas cylinder 30, and they are screw-connected. Since a band 25 is inserted into the band groove 24 of a hood fitting part 21 and is fastened and fixed, the fitting part 21 is prevented from being deformed outward even if pressure force is applied to the hood 20. Since a wire insertion hole 12 is formed of a softer material, the operation wire 11 is not damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a smoke test apparatus used for periodic inspection of smoke detectors.

[0002]

2. Description of the Related Art A conventional smoke tester includes a main body having a spray chamber, a hood provided at the tip of the main body and communicating with the spray chamber, and a support rod rotatably provided on the main body. A fixture, a gas cylinder detachably attached to the bottom of the main body, for ejecting a test gas into the spray chamber, and a valve control means for the gas cylinder are provided.

The support rod attachment has a U-shaped attachment frame, and the gas cylinder is fixed in the U-shaped frame screwed to the main body through a cylinder attachment. There is. Further, the valve control means of the gas cylinder has an operation wire for pulling the nozzle pressing body, and this operation wire is inserted into the wire insertion hole of the main body.

When performing an operation test of the smoke detector, the support rod is extended and the hood provided via the support rod attachment and the main body is raised toward the smoke detector to be inspected and brought into contact with the ceiling surface. Cover the smoke detector. Press the nozzle pusher against the smoke detector or pull the operation wire to open the valve of the gas cylinder, eject the test gas into the spray chamber, create a pseudo fire smoke state, and check the operation of the smoke detector. is doing.

[0005]

The conventional example has the following problems. (1) Since the bottom of the U-shaped mounting frame of the support rod mounting tool is longer than the diameter of the cylinder gas, its both corners are caught by the object and scratched, or projecting in the diameter direction.
Workability in a narrow space is not good.

(2) In order to fix the gas cylinder to the main body, parts such as a frame and a screw that surround the gas cylinder in a U shape are required, and it is bulky and heavy on a mobile phone, and the diameter of the main body is adjusted to the mounting frame. Have to be bigger. Furthermore, it is troublesome to attach and detach the gas cylinder to and from the frame. (3) When pressing the hood against the ceiling surface to cover the smoke detector,
Since the hood is formed of a soft material such as silicon, the mounting portion of the hood with respect to the main body may have a large diameter, which may cause misalignment or may be unnecessarily pushed.

(4) When the support rod attachment is swung downward, the support rod attachment and the support rod collide with the gas cylinder to damage the cylinder, and when shaken upward, the support rod attachment hits the hood. The hood may come in contact with the hood and push it up, and the hood may come off. (5) When the operation wire is operated, friction is generated with the wire insertion hole, and the wire is scooped up and damaged. Therefore, the operator's hand may be damaged.

In view of the above circumstances, it is an object of the present invention to facilitate the attachment / detachment of a gas cylinder and to make it compact and lightweight.
Another object is to prevent outward deformation of the mounting portion of the hood and prevent damage to the operation wire.

[0009]

According to the present invention, there is provided a main body having a spray chamber, a hood provided at a front end portion of the main body and communicating with the spray chamber, and detachably attached to a bottom portion of the main body. A smoke detector smoke tester comprising a gas cylinder for ejecting a test gas into a spray chamber and a valve control means for the gas cylinder; the main body and the gas cylinder are provided with screw parts screwed together. Characterize.

According to the present invention, a main body having a spray chamber, a hood provided at the tip of the main body and communicating with the spray chamber, and a bottom portion of the main body are detachably mounted, and a test gas is supplied to the spray chamber. A smoke tester of a smoke detector, comprising: a gas cylinder that ejects gas; and a valve control means for the gas cylinder; an outer deformation restricting means is provided at an attachment portion of the hood.

According to the present invention, there is provided a main body having a spray chamber, a hood provided at a tip portion of the main body and communicating with the spray chamber, a support rod attachment rotatably provided on the main body, and the main body. In a smoke detector smoke detector equipped with a gas cylinder that is detachably attached to the bottom of the chamber and that ejects a test gas into the spray chamber, and a valve control means of the gas cylinder; It is characterized by having a stopper that regulates the range.

According to the present invention, there is provided a main body having a spray chamber, a hood provided at a tip portion of the main body and communicating with the spray chamber, a support rod fitting rotatably provided on the main body, and the main body. In a smoke tester of a smoke detector, which is detachably attached to a bottom portion of a gas cylinder for ejecting a test gas into the spray chamber, and valve control means of the gas cylinder; , And is provided with a substantially V-shaped mounting frame.

According to the present invention, a main body having a spray chamber, a hood provided at the tip of the main body and communicating with the spray chamber, and a bottom portion of the main body are detachably mounted, and a test gas is supplied to the spray chamber. A smoke detector smoke tester comprising a gas cylinder for jetting and valve control means for the gas cylinder; the valve control means for the gas cylinder includes a wire passing through a wire insertion hole of the main body, and the wire insertion The hole is provided with the wire breakage prevention means.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, the main body and the gas cylinder are provided with screw portions which are screwed with each other, and the both are screwed to facilitate the attachment and detachment. Further, by providing the screw loosening prevention means, the main body and the gas cylinder can be maintained in a normal coupled state.

According to the present invention, the outer deformation restricting means is provided at the mounting portion of the hood to prevent the hood from being pushed in more than necessary when the hood is pressed against the ceiling surface or the like.
Further, since the support rod attachment is provided with the stopper for restricting the displacement range, the attachment is displaced within the upper and lower limits.
Therefore, it is possible to prevent the support rod and the support rod attachment from colliding with the hood and the gas cylinder.

According to the present invention, since the support rod attachment is a substantially V-shaped attachment frame, it does not become large unlike the conventional U-shaped attachment frame. Further, since the valve control means of the gas cylinder is provided with the wire passing through the wire insertion hole of the main body, and the wire insertion hole is provided with the wire breakage prevention means, the wire breakage can be prevented.

[0017]

Embodiments of the present invention will be described with reference to FIGS. The main body 1, the hood 20 fixed to the tip portion 1a of the main body 1, the gas cylinder 30 mounted on the bottom portion 3 of the main body 1, and the support rod mounting tool 4 rotatably held by the main body 1.
It has 0 and.

The main body 1 is, for example, a cylindrical body made of aluminum or its alloy, and has a straight tube portion 1A constituting the spray chamber 2 and a skirt portion 1B having a diameter larger than that of the straight tube portion 1A.
It is composed of a truncated cone-shaped portion 1C connecting the both 1A and 1B. The lower end of the straight cylindrical portion 1A is closed by the fixed plates 3a and 3b forming the bottom portion 3.

A through hole 4 having an inverted T-shaped cross section is provided in the center of the fixing plate 3a, and a nozzle fixing member 5 is provided in the through hole 4.
Is slidably inserted. A stopper flange 5a is provided at the lower end of the fixture 5 to regulate the range of movement of the fixture 5.

The fixture 5 is connected to the column 7 via a support fixture plate 6. Three columns 7 are provided,
The tip thereof supports the nozzle pressing body 8. The pressing body 8 is formed of nylon or the like in a ring shape.

A nylon clip 9 is attached to the nozzle pressing body 8.
The W ring 10 is provided via the, and the operation wire 11 is connected to the W ring 10. This operation wire 11 is made of stainless steel, and has a wire insertion hole 1 of the main body 1.
It extends through 2 to the outside, and a round crimp terminal 13 is provided at the rear end thereof, for example. An L-shaped main body auxiliary plate 14 together with the fixed plate 3b is attached to the fixed plate 3a.
It is fixed together by b.

An intermediary nozzle 15 is fitted in the nozzle fixture 5. The tip of the nozzle 15 projects into the spray chamber 2, and the nozzle 3 of the gas cylinder 30 is provided at the rear end.
No. 4 nozzle insertion holes 15a are provided.

The fixed plate 3b is screwed to the back surface of the fixed plate 3a. A cylindrical wall 16 is provided at the lower center of the fixed platen 3b.
The cylindrical wall 16 faces the inverted T-shaped through hole 4 and has an internal thread portion 16 on the inner peripheral surface thereof.
a is provided.

A nozzle holding cylinder 31 is provided in the center of the upper surface of the gas cylinder 30, and a male screw portion 31a is provided on the outer peripheral surface thereof.
Is provided. On the outer side of the nozzle holding cylinder 31, guide walls 33 are erected at intervals. It should be noted that the gas cylinder 30 is provided with a valve (not shown), but this valve is provided with a nozzle 34 when the intermediary nozzle 15 is pushed down.
Is pushed down and the valve opens.

The screw portion 16a of the main body 1 and the gas cylinder 30,
31a is prevented from being loosened by screwing loosening prevention means. As the loosening prevention means, for example, a beaded connector 1
8 is used. To prevent loosening, for example, if the main body 1 and the gas cylinder 30 are screwed tightly, the thin portion of the nozzle holding cylinder 31 will be overloaded, and pressing the set screw directly onto the cylinder 39 will damage the cylinder. There is. One end of the connecting tool 18 is fixed to the lower end of the straight cylindrical portion 1A of the main body 1 with a screw 18a, and the other end is fixed to a tightening band 19 provided at the lower end of the gas cylinder 30. In this way, even if the gas cylinder 30 is loosely screwed into the main body 1, the loosening does not proceed and the gas cylinder 30 side is not burdened.

The hood 20 is made of a soft material, for example, semitransparent silicon rubber, and is composed of a mounting portion 21 and a bellows portion 22. The mounting portion 21 is provided with an engaging convex portion 21a on the inner peripheral wall, a fitting hole 23 and a ring-shaped band groove 24. The engaging protrusion 21a is fitted into the engaging hole 1b formed in the tip 1a of the main body 1, and the engaging hole 23
A stopper piece 17 is fitted into the band groove 24, and a band 25 for aligning wires is fitted into the band groove 24 and tightened. If the engagement protrusion 21a is provided on the back surface of the band groove 24 for a long time, the engagement is enhanced.

The support rod attachment 40 is composed of an attachment frame 41 formed of a bent strip and a stopper rod 42 held by the attachment frame 41. The mounting frame 41 is the main body 1
It is composed of a pair of parallel arms 43 axially fixed to the straight cylindrical portion 1A and a V-shaped arm 44 to which the support rod 50 is fixed.

A long hole 45 is formed in the parallel arm 43, a stopper rod 42 is movably mounted in the long hole 45, and both ends thereof are fixed by nuts 47. The stopper bar 42 functions as a stopper for rotating the mounting frame 41 up and down, and also prevents the mounting frame 41 from being deformed.

The stopper rod 42 rotates by an allowable deflection angle θ with the rotation of the mounting frame 41. When the stopper rod 42 reaches the allowable upper limit position, it abuts on the stopper piece 17, and when the stopper rod 42 reaches the allowable lower limit position, a straight cylinder is formed. Abut the part 1A. This allowable shake angle θ is appropriately selected as necessary, but for example,
The angle θ = 70 degrees is adopted.

A support bar 50 is fixed to the fixing portion 44a of the V-shaped arm 44 with a screw 46. The support rod 50 is
It is a three-stage connecting nut lock type and is expandable and contractible. Since the attachment frame 41 of the support rod attachment 40 is formed in a substantially V shape, it is arranged along the cylindrical gas cylinder 30 and the main body 1 when shaken to the lowermost part of the attachment, There is no horn because it does not protrude outside. for that reason,
It's slim, it doesn't damage things, and it's also small in size. It's slim and it improves workability in narrow places.

Next, the operation of this embodiment will be described. Fitting the hood. The fitting hole 23 of the hood 20 is inserted into the stopper piece 17, the engaging convex portion 21a of the hood is fitted into the engaging hole 1b of the main body 1, and the mounting portion 21 of the hood is fitted into the tip portion 1a of the main body 1. The band 25 is inserted into the band groove 24 of the mounting portion 21 and fixed by tightening. As a result, the mounting portion 21 is attached to the main body 1
Since the hood 20 is strongly fixed to the hood 20, the mounting portion 21 is not deformed outward even if a pressing force is applied to the hood 20.

Installation of a gas cylinder. The nozzle holding cylinder 31 of the gas cylinder 30 is inserted into the female screw portion 16a of the bottom portion 3 of the main body 1 and rotated in a predetermined direction. Then,
The screw parts 16a and 31a of both are screwed together to form the gas cylinder 30.
Is raised while being guided by the cylindrical wall 16, the upper end of the guide wall 33 contacts the fixed platen 3b, and the tip of the nozzle 34 is inserted into the nozzle insertion hole 15a of the intermediary nozzle 15.

In this way, both 1 and 30 are fixed and integrated, but at this time, the cylindrical wall 16 is fixed to the nozzle holding cylinder 31.
Since it is fitted between the guide wall 33 and the guide wall 33, the gas cylinder 3
A diametrical displacement of 0 is restricted. Also, gas cylinder 3
Since the front end portion of 0 is surrounded by the skirt portion 1B, when the gas cylinder 30 is displaced in the diameter direction, the skirt portion 1B
Abutting against, no further displacement is allowed.

Attaching a connector. The tightening band 19 is arranged at the lower end of the gas cylinder 30 before being screwed in, the bead-shaped connecting member 18 is pulled while rotating the band, and the band is tightened and fixed at the position where it is tightened and fixed by the screw parts 16a and 31a. The connector 18 is fixed so that the screw parts 16a and 31a return to the tightening direction.
As a result, the loosening of the threaded portions 16a and 31a does not proceed. At this time, the connection tool 18 has the truncated cone portion 1
Since C and the skirt portion 1B come into contact with each other, it is possible to prevent the gas cylinder 30 from being subjected to an excessive force.

Mounting of support rods. The support rod 50 is fixed to the fixing portion 4 of the mounting frame 41 of the support rod attachment 40.
The screw 46 is fixed to 4a.

Smoke tester setting. The support rod 50 is extended and the hood 20 of the smoke tester S is raised toward the smoke sensor 60 to be inspected,
The bellows portion 22 of the smoke detector 6 is brought into contact with the ceiling 56,
Cover 0.

At this time, the stopper rod 4 of the support rod attachment 40
2 moves while displacing in the long hole 45, but when reaching the upper limit of the allowable movement range of the fixture 40, the stopper piece 1
7 and restricts the movement of the fixture 40. When the lower limit of the allowable movement range of the fitting 40 is reached, it abuts against the outer peripheral surface of the straight cylindrical portion 1A of the main body 1 to restrict the movement of the fitting 40.

Since the range of movement of the support rod attachment 40 is restricted in this way, the support rod 50 and the support rod attachment 40 do not come into contact with the attachment portion 21 of the hood 20 or the gas cylinder 30. Further, since the long hole 45 is used, the movement regulation range, that is, the swing angle θ can be increased.

When the hood 20 is pressed against the ceiling 56, a pressing force is applied to the mounting portion 21, but since the mounting portion 21 is clamped and fixed by the band 25, it is not deformed outward.

Opening of the gas cylinder. The support rod 50 is pushed up and the nozzle pressing body 8 is moved to the smoke detector 60.
When pressed against, the intermediary nozzle 15 descends and the nozzle 34
Press. Then, the valve of the gas cylinder 30 opens,
The test gas enters the spray chamber 2 and fills the hood 20, causing a pseudo-fire smoke state. In this state, the smoke detector 6
Check if 0 worked.

Do not stand directly under the smoke detector 60, but support rod 50
When it is necessary to incline considerably, the round crimp terminal 13 or the wire extended from the terminal 13 is grasped and the operation wire 11 is pulled to lower the nozzle pressing body 8 to open the valve. At this time, the operation wire 11 slides while rubbing the wire insertion hole 12 which is a wire breakage preventing means obliquely with a strong force.
Is made of a material softer than the operating wire, the operating wire 11 is not damaged. The wire breakage prevention means also includes a sliding portion of the operation wire 11, for example, one in which the V-shaped arm 44 or the like is formed of a material softer than the operation wire.

After the smoke sensor 60 has been tested, the smoke sensors to be inspected are sequentially tested in the same manner as described above, but when the test gas in the gas cylinder 30 is exhausted, the tightening band 19 is loosened. The gas cylinder 30 is rotated in a predetermined direction and removed from the main body 1. Then, a new gas cylinder is attached to the main body 1 as described above.

[0043]

The present invention has the following remarkable effects. (1) Since the main body and the gas cylinder are provided with screw parts that are screwed together, they can be easily attached to and detached from the other by simply rotating one. Therefore, unlike the conventional example, the cylinder mounting frame is not required and the number of parts is reduced,
It is small and lightweight, making it easy to attach and detach. (2) Since the screw loosening prevention means is provided, the loosening of the screw portion between the main body and the gas cylinder does not proceed. Therefore, it is possible to prevent the gas cylinder from dropping.

(3) Since the outer deformation restricting means is provided at the mounting portion of the hood, even if the hood is pressed against the ceiling or the like, the diameter of the hood is not expanded and pushed in unlike the conventional example. (4) Since the support rod fixture is provided with the displacement range restricting means, the fixture is displaced within the upper and lower limits. Therefore, the support rod or the support rod attachment does not come into contact with the attachment portion of the hood or the gas cylinder, and the hood does not come off or a strong moment is applied to the cylinder and it is not damaged.

(5) Since the mounting frame of the support rod mounting member is formed in a substantially V shape, it is arranged along the cylindrical gas cylinder or the main body when the mounting member is swung downward. , There is no horn without protruding outside. Therefore, it will be slim and will not damage things. In addition, since it is slim, including overall miniaturization, workability in narrow spaces is improved.

(6) Since the stopper rod of the support rod attachment is supported by the elongated hole, the deflection angle of the support rod can be set beyond the upper and lower swing angle limits. Therefore, the smoke test can be performed by further tilting the support rod. (7) Since the wire breakage prevention means is provided, even if the operation wire is slid, damage such as whispering does not occur. Therefore, the operator is not injured with his / her hand or the like.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a vertical cross-sectional view of FIG.

FIG. 4 is a side view of FIG.

[Explanation of symbols]

1 body 2 spray room 3 bottom 8 nozzle pressing body 11 Operation wire 12 wire insertion hole 18 Beaded connector 19 tightening band 20 hood 21 Mounting part 30 gas cylinder 40 Support rod attachment 41 Mounting frame 42 Stopper bar 45 slot 50 support rod

Claims (9)

[Claims] 1. A main body having a spray chamber, a hood which is provided at the tip of the main body and communicates with the spray chamber, and a detachably mounted bottom part of the main body, and jets a test gas into the spray chamber. A smoke detector smoke tester comprising a gas cylinder and valve control means of the gas cylinder; a smoke sensor addition characterized in that the main body and the gas cylinder are provided with threaded portions screwed together. Smoke tester. 2. The smoke tester for a smoke detector according to claim 1, further comprising screw loosening preventing means for preventing loosening of the screw portion of the main body and the gas cylinder. 3. A main body having a spray chamber, a hood provided at the tip of the main body and communicating with the spray chamber, and a bottom part of the main body which is detachably mounted and jets a test gas into the spray chamber. A smoke detector smoke tester equipped with a gas cylinder and valve control means of the gas cylinder; smoke smoker of the smoke sensor characterized in that an outer deformation restricting means is provided at a mounting portion of the hood. Tester. 4. A main body having a spray chamber, a hood provided at a tip portion of the main body and communicating with the spray chamber, a support rod attachment rotatably provided on the main body, and a bottom portion of the main body. A smoke tester of a smoke detector, which is detachably mounted on the spray chamber, and which includes a gas cylinder for ejecting a test gas into the spray chamber, and a valve control means of the gas cylinder; A smoke tester for smoke detectors, which is equipped with a stopper for controlling. 5. The main body is provided with upper and lower swing angle restricting portions with which the stopper abuts.
A smoke tester for the smoke detector described. 6. The smoke tester for a smoke sensor according to claim 5, wherein the upward swing angle restricting portion is a protrusion provided on a fixed portion of the hood. 7. A main body having a spray chamber, a hood provided at a tip portion of the main body and communicating with the spray chamber, a support rod attachment rotatably provided on the main body, and a bottom portion of the main body. A smoke tester of a smoke detector, which is detachably attached to the spray chamber and comprises a gas cylinder for ejecting a test gas into the spray chamber, and a valve control means of the gas cylinder; Smoke detector of smoke detector, characterized by having a frame-like shape. 8. A substantially V-shaped frame, a rod-shaped body which is a stopper for restricting a displacement range of the frame, a parallel arm portion having an elongated stopper hole into which the rod-shaped body is inserted, and a support rod. The smoke tester for a smoke detector according to claim 7, further comprising: a fixing portion for fixing the smoke detector. 9. A main body having a spray chamber, a hood which is provided at the tip of the main body and communicates with the spray chamber, and a detachable mount on the bottom of the main body, and jets a test gas into the spray chamber. In a smoke detector smoke tester comprising a gas cylinder and valve control means of the gas cylinder; the valve control means of the gas cylinder includes a wire passing through a wire insertion hole of the main body, and the wire insertion hole is A smoke tester for a smoke sensor, comprising: the wire breakage prevention means.