JP3392360B2 - Gas ejector - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to relates to a gas ejector for use in <br/> operation dynamic testing, etc. portable performing operation tests of smoke detector which is installed using a test gas .

[0002]

2. Description of the Related Art Conventionally, as an operation tester for testing the operation of an ionization type smoke detector or a photoelectric smoke detector using a test gas, for example, the operation of Japanese Utility Model Publication No. 60-5437 shown in FIG. There is a tester.

In FIG. 9, the operation tester includes a main body 101 attached to the tip of a telescopic operating rod 113.
1, a cover 102 is provided on the upper part of the main body 1, and a valve 115 that is opened by being brought into contact with a smoke detector 114 is provided in the center of the main body. A hose 125 is drawn out from the lower portion of the valve 115, passes through the operating rod 113, and is connected to a cap 126 attached to the nozzle 111 of the gas cylinder 104. The gas cylinder 104 is the main body 10
Separated from 1, it is placed at the operator's hand.

During the test, by mounting the cap 126 on the gas cylinder 104, the nozzle 111 is pushed down and the gas is released, and the cock 130 is opened to allow the gas to flow through the hose 125 to the valve 115 of the main body 101. In this state, the body 101 is attached to the smoke detector 114.
When pressed against, the valve plate 117 is pushed down by the contact of the operation plate 107, the valve 115 is opened, gas is released, and an operation test can be performed.

[0005]

However, in such a conventional gas ejector, the valve 11 is provided with the operation plate 107 on the main body 101 provided at the tip of the operation rod 113.
5 is mounted, and the operation plate 107 does not come into contact with and press against the correct position near the center of the tip of the smoke detector 114, the valve rod 117 will be twisted and gas will not easily come out. There is a problem that alignment is difficult to perform.

The tester body 10 is attached to the tip of the operating rod 113.
1, the tip side is heavy because it has a valve structure inside, and the weight balance is bad, so if you do not have the operating rod 113 firmly with both hands, the position with respect to the smoke detector installed on the ceiling surface There is also a problem that matching is difficult.

Further, operation test of the sensor, in order to continuously tested at once a plurality of sensors installed in a building, it is poor weight balance heavy distal end side, the operator of the physical burden Has become a big one.

Further, the gas cylinder 104 is attached to the tester body side 1
Since the gas cylinder 104 is separated from 01, it is necessary for an operator to carry the gas cylinder 104 or carry it each time, and the handling of the gas cylinder 104 is inconvenient.

Furthermore, a hose 125 for connecting the tester body 101 to the separated gas cylinder 104 is connected to the operating rod 113.
The hose 125 needs to have a length commensurate with the maximum length of the operating rod 113. But,
There are few places where the operating rod 113 is extended to the maximum for testing, and normally, the operating rod 113 is often tested in a contracted state. Therefore, the hose 125 droops unnecessarily long, which makes it difficult to perform the test work. There is.

The present invention has been made in view of the above-mentioned problems of the prior art, and by appropriately balancing the entire weight, one-handed work is facilitated to improve workability, and necessary members including a gas cylinder are integrated. and to provide a handling and transportation is to allow easier gas ejector in Rukoto that Yakusu collecting functions turned into.

[0011]

To achieve this object, the present invention is constructed as follows.

The present invention is a gas ejector for ejecting a gas according to the purpose to a remote object. The gas ejector has a gas ejection port opened at its tip and an axial direction provided with a gas supply passage therein. In addition to a flexible support pipe and a pipe connection part where the support pipe is connected and fixed to the tip side, a gas cylinder storage part that detachably stores a gas cylinder that releases gas from the tip nozzle by pressing the nozzle lever at the rear end side is composed of a main body operation section provided, the manipulation section is further arranged at the position of the balanced body operation portion of the heavy weight balance handle that enables one hand holding between the support pipe and the gas cylinder housing portion And a gas release to release the gas from the gas release port at the tip of the pipe by pressing the operation part of the gas cylinder in accordance with the operation of the lever provided on the handle to release the gas into the gas supply passage of the support pipe. Characterized by comprising a mechanism.

In this way, the main body operation section, the pipe connection section,
The weight of the gas cylinder storage part, the handle part, and the gas release mechanism are integrated, and the center of gravity does not move easily even if the handle part is used by tilting the entire gas ejector between the support pipe on the front end side and the cylinder storage part on the rear end side. By arranging it at the position of the main body operation part that can be balanced, the weight balance of the entire handle part can be obtained with the gas cylinder stored, and the tip side does not become unnecessarily heavy, so one-handed work with the handle part with one hand To facilitate. The telescoping support pipe及beauty most features are integrated main body operation unit aggregated, can be eliminated maneuverability and inconvenience of transportation in such cases as separate gas cylinders.

The gas discharge mechanism is provided with an air inlet for introducing air from the outside at the time of gas discharge to the space around the nozzle at the tip of the gas cylinder. By the provision of the air inlet, when released to the nozzle or Laga scan of the gas cylinder toward the gas supply passage in the pipe, air is introduced with the air inlet to the gas discharge, the supporting pipe 1 Even with a length of up to 2 meters, the gas can be efficiently discharged from the pipe tip with almost no time lag.

According to the present invention, the direction of the axis of the gas cylinder to which the gas cylinder is attached is set so that the gas discharge direction of the nozzle when the operating portion of the gas cylinder is pressed matches the direction of the axis of the support pipe. It is arranged on the main body operating part with a predetermined angle of inclination with respect to the direction of the axis of the.

In a gas cylinder having a structure in which the gas is discharged from the nozzle at the tip of the gas cylinder by pressing the operation part provided on the side of the nozzle, the direction of gas discharge from the nozzle when the operation part is pushed is changed. It was found that the part was slightly inclined in the direction of pushing. For this reason, if the pipe is connected so as to be coaxial with the axis of the gas cylinder, the gas discharged from the nozzle is inclined in the discharge direction, hitting the inner surface of the pipe and obstructing the flow, and It cannot be released efficiently.

This problem is solved by arranging the gas cylinder on the main body operating part with the direction of the axis of the gas cylinder being inclined by a predetermined angle with respect to the direction of the axis of the support pipe. In this case, the inclination angle is preferably around 10 degrees.

The handle portion provided on the main body operation portion has the operation lever arranged inside the handle so that the lever can be operated while being gripped by one hand. Therefore, it is possible to release the gas by operating the lever with a finger while holding and holding the handle with one hand. Also, since the operating lever is located inside the handle, when carrying it with other luggage in the trunk of the car etc., the operating lever is pushed by other luggage and accidentally releases gas. Can be resolved.

In the support pipe, the second pipe member is slidably arranged inside the first pipe member connected and fixed to the main body operation portion, and the second pipe is attached to the tip of the first pipe member by friction resistance. Equipped with an elastic stopper (rubber stopper) that holds the telescopic position. By holding by this elastic stopper (rubber stopper), it is possible to easily adjust the pipe to an arbitrary length and work without requiring a special holding mechanism.

The support pipe is FRP and the main body operation section is PB.
It is composed of a highly insulating lightweight material such as T. For example, even when there is a high-voltage electrical equipment at the place where the smoke detector to be tested is installed, the support pipe and the main body operation part have extremely high insulation resistance, so that the safety of work is ensured.

Further, since the support pipe and the main body operating portion are made of a lightweight material, the test work and the carrying can be facilitated, and the burden on the operator can be greatly reduced.

A transparent cover may be attached to the tip of the support pipe to cover the surroundings of a smoke detector or the like as an object to prevent the emission gas from scattering due to the air flow from the outside. Further, a gas diffusion guide for diffusing and discharging the gas to the outside can be provided at the gas discharge port at the tip of the pipe member.

The gas discharge mechanism further includes a cord lever that pushes the operating portion of the gas cylinder to discharge the gas by operating the drawstring. When the support pipe is extended to the maximum length and does not reach the target smoke detector , the gas ejector of the present invention may be attached to the tip of another support pipe. In this case, the cord can be released by attaching a cord to the cord-moving lever provided on the main body operating portion side and pulling the cord.

A nozzle cap is attached to the gas cylinder. The nozzle cap is provided with a nozzle at the tip and laterally provided with an operation part having a shape with which a nozzle lever located in a gas cylinder housing part for pressing the operation part of the gas cylinder in accordance with the operation of the lever is engaged. By mounting such a nozzle cap on the gas cylinder, when the gas cylinder is stored in the gas cylinder storage portion, the operation portion is engaged with the position of the nozzle lever and can be reliably positioned.

In the gas ejector of the present invention, a gas cylinder filled with a test gas for testing the operation of the smoke detector is used as a smoke detector operation tester. can do.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a general explanatory view of the case where the gas ejector according to the present invention is used as an operation tester of a smoke detector. In FIG. 1, the operation tester is composed of a tester main body 1 serving as a main body operation part and a support pipe 2 mounted on the tip side thereof. In this embodiment, the support pipe 2 has a first pipe member 3 whose lower portion is connected and fixed to the tester body 1 and a first pipe member 3 which is inserted into the first pipe member 3 and is slidable in the axial direction. It is composed of two pipe members 4.

The first pipe member 3 and the second pipe member 4 have a hollow pipe structure, and internally have a gas supply passage for releasing the test gas from the opening at the tip. The inner diameter of the pipe member serving as the gas supply passage is 10 mm or more in this embodiment, and practically it is desirable to be around 20 mm.

Further, the first pipe member 3 and the second pipe member 4
The length of the support pipe 2 having the two-stage pipe structure of
The minimum length when the second pipe member 4 is pulled into the first pipe member 3 is about 1 meter, and the maximum length when the second pipe member 4 is pulled out is about 2 meters. The rubber stopper 5 holds the pulled-out position of the second pipe member 4 when pulled out from the first pipe member 3.

The tip of the second pipe member 4 serves as a gas discharge port, and the diffusion guide 6 is attached thereto. Diffusion guide 6
Spreads the test gas sent through the gas supply passage in the pipe so as to wrap it around the smoke detector installed on the ceiling surface. Furthermore, for the diffusion guide 6, a funnel type
It can be attached to sensor cover 7 for anti-wind. The detector cover 7 is positioned over the outside of the smoke detector under test and is made of a transparent plastic material so that the inside can be seen.

By using a transparent plastic material, the operator can easily confirm from below the lighting of the operation indicator lamp when the smoke detector operates by receiving the test gas. The sensor cover 7 is made of, for example, transparent ABS resin.

Further, the first pipe member 3 and the second pipe member 4 are made of a highly insulating lightweight material of FRP resin in this embodiment, and are used in smoke detectors such as those installed in high voltage electrical equipment. It also ensures extremely high insulation resistance during testing and is also lightweight.

A pipe connecting portion 8 is provided on the upper side of the tester main body 1, and the first pipe member 3 of the support pipe 2 is inserted into the pipe connecting portion 8 to be supported and fixed. A gas cylinder storage portion 9 is formed below the tester body 1.
A cap 14 is attached to the bottom of the gas cylinder storage portion 9 by screwing, and the cap 14 is removed so that the gas cylinder can be stored inside. Further, the cap 14 is connected to the main body side by a chain 15 to prevent the cap 14 from being lost when it is removed.

A handle portion 10 is integrally provided on the side of the tester body 1. The handle portion 10 has a handle shape that allows an operator to hold the tester with one hand, and an operating lever 12 for opening the nozzle of the gas cylinder is arranged inside the handle portion. Handle portion 10 is disposed at a position of the test body 1 the center of gravity moves to take the least weight balance be for operating the tester across the inclined use between the support pipe 2 and the gas cylinder compartment 9.

Therefore, when the handle portion 10 is held with the gas cylinder of the test gas stored in the gas cylinder storage portion 9, the weight balance between the support pipe 2 side and the gas cylinder storage portion 9 side is achieved. The sensor cover 7 attached to the tip of the support pipe 2 with the handle 10 held by one hand can be easily aligned with the smoke sensor on the ceiling side.

Further, in the operation tester of the present invention, the direction of the pipe axis 22 of the pipe connecting portion 8 of the tester body 1 and the direction of the cylinder axis 23 of the gas cylinder housing portion 9 should be the same. Instead, a predetermined inclination angle θ is intentionally provided. This inclination angle θ is based on the difference between the installation direction of the gas cylinder and the gas discharge direction from the nozzle, and will be further clarified in the later description.

An air introduction port 11 is formed in a portion of the gas cylinder housing portion 9 of the tester body 1 which is located inside the gas cylinder housing portion, in which a nozzle is located, so that air can be introduced into the space around the nozzle from the outside. This air inlet 11
The test gas is discharged from the nozzle of the gas cylinder accommodated in the gas cylinder accommodating portion 9 by pulling the operation lever 12 provided on the handle portion 10, passes through the inside of the support pipe 2, and is emitted from the diffusion guide 6 at the tip. At this time, air from the outside is introduced through the air introduction port 11, whereby the gas flow in the pipe of the support pipe 2 is efficiently performed by the air introduction, and the gas can be released from the diffusion guide 6 at the pipe tip. .

Further, a rope moving lever 25 is provided below the handle portion 10 provided on the tester body 1. A cord is tied to the cord lever 25 to pull the handle portion 10
Similarly to pulling the operating lever 12 of
Gas can be released from the gas cylinders stored in. Further, the search motion lever 25, stopper par 2 7 is lockable, by a locked state, it inhibits the operation of the operating lever 12 and the rope moving lever 25.

FIG. 2 shows the support pipe side of FIG. 1 taken out. The support pipe 2 has a second pipe member 4 slidably incorporated inward with respect to an outer first pipe member 3 fixed to the tester main body 1 side, and a rubber stopper 5 is provided at a tip end portion of the first pipe member 3. I am wearing. A diffusion guide 6 is attached to the second pipe member 4, and a sensor cover 7 is attached to the diffusion guide 6. Further, in the embodiment of FIG. 2, the case where a cylindrical additional cover 13 is further provided on the sensor cover 7 is taken as an example.

The additional cover 13 has a bellows shape and is made of silicon resin, so that it has elasticity , and when pressed against the ceiling, it can be closely attached to reduce the gap with the ceiling, thus preventing the diffusion of the test gas. it is possible. Also four notches 13 a is provided in a cross direction, provided in order to escape the exposed pipe in consideration of the test smoke detector exposed piping at the top.

The diffusion guide 6 attached to the tip of the support pipe 2 has, for example, the structure shown in FIG. That is, the diffusion guide 6
Has a cylindrical cap-shaped tip portion following the guide body 6a which is a mounting portion for the lower pipe tip, and has direct-holes 6b formed in the upper end surface of the cylindrical cap-shaped tip portion, and is provided at four peripheral locations. A side opening hole 6c is formed.

Therefore, the test gas passing through the pipe is discharged axially from the direct hole 6b, and at the same time, is radiated in four directions from the surrounding side opening holes 6c, whereby the surroundings of the sensor are detected. The test gas released into the can be diffused. The shape, position, and number of holes provided on the tip side of the diffusion guide 6 depend on the type of test gas used and the type of sensor to be tested, that is, whether it is a photoelectric smoke detector or an ionization smoke detector. Take the optimum form.

FIG. 4 shows the second pipe member 3 of FIG.
3 is a cross-sectional structure of a rubber stopper 5 which holds the pipe member 4 at an arbitrary extended position. The rubber stopper 5 has a cylindrical shape, and is fitted into the fitting groove 3a at the tip of the first pipe member 3 at the lower part to be supported and fixed, and the upper part is fitted into the inner second pipe member 4. As for the inner diameter of the portion of the rubber stopper 5 that passes through the second pipe member 4, by making the inner diameter on the rubber stopper 5 side smaller than the outer diameter of the second pipe member 4,
The inner surface of the rubber stopper 5 is pressure-bonded to the second pipe member 4, and the second pipe member 4 can be held at an arbitrary expansion / contraction position by the frictional resistance due to this pressure force.

FIG. 5 shows the tester body 1 side of FIG. 1 taken out, FIG. 5 (A) is an enlarged view seen from the same position as FIG. 1, and FIG. 5 (B) is a side view of FIG. 5 (A). It becomes a figure. Figure 5
As shown in (A), a gas cylinder for discharging the test gas is stored in the gas cylinder storage portion 9 of the tester body 1, and the nozzle 17a of the gas cylinder stored inside from the portion of the air introduction port 11a. Can be seen.

As is apparent from FIG. 5B, the tester main body 1 has a structure in which it is divided into two parts, left and right, and fixed by screwing together two members as shown in FIG. 5B. At this time, the lower end of the first pipe member 3 is fitted into the pipe connecting portion 8 to fasten and fix it.

FIG. 6 shows the tester main body 1 with respect to FIG. 5 (A).
This is the internal structure with one side of the cover removed. The first pipe member 3 of the support pipe 2 is inserted into the storage hole of the pipe connecting portion 8 on the upper side of the tester main body 1 from above, and the second pipe member 4 slides in the first pipe member 3. It is provided freely. A gas inlet 21 is opened at the bottom of the opening hole of the pipe connecting portion 8 accommodating the support pipe 2.

Gas cylinder storage section 9 below the tester body 1
A gas cylinder 16 is housed and fixed in the inside by screwing the cap 14 at the bottom. The gas cylinder 16 is provided with a nozzle cap 17 at its tip, and this nozzle cap 17 is provided with a nozzle 17a at its tip and an operation portion 17b at its side. When the operating portion 17b of the nozzle cap 17 is pushed downward, the valve arranged inside the nozzle 17a is opened by being pushed in and the gas inside is released from the nozzle 17a.

The operating lever 12 provided on the handle portion 8 is
It is provided rotatably around the support shaft 19. Operating lever 1
2, the operating portion 12a is extended downward from the support shaft 19 along the inside of the handle, and the operating portion 12b is extended in a lateral direction substantially orthogonal to the operating portion 12a so that the operating portion 12b is supported by the tester body 1. It is in contact with a bent portion 20a at the tip of a link lever 20 that is slidably installed in the axial direction of the pipe 2.

The pressing portion 20b at the lower end of the link lever 20
Presses the nozzle lever 18 located above the operation portion 17b on the side of the nozzle cap 17 of the gas cylinder 16 stored in the gas cylinder storage portion 9. The nozzle lever 18 is integrally provided with an inverted L-shaped rope moving lever 25 provided on the lower portion of the handle portion 8.

An engaging piece 26 for positioning is provided between the nozzle lever 18 and the operating portion 17b of the nozzle cap 17. The peripheral wall 17e of the nozzle cap 17 is not provided only at the operation portion 17b, and an engaging piece 26 is provided so that the nozzle lever 18 is aligned with the operation portion 17b.

When the gas cylinder 16 is stored in the gas cylinder storage portion 9, the gas cylinder 16 is pushed in while rotating and the operation portion 17b is aligned with the position of the engaging piece 26 so that the gas cylinder 16 cannot rotate and the gas cylinder storage portion 9 is rotated. It is possible to securely store the gas cylinder 16 to the back, and it is possible to reliably determine that the gas cylinder 16 has been stored.

When a portion of the peripheral wall 17e other than the operation portion 17b is in contact with the engagement piece 26, the gas cylinder 16 cannot be stored to the back of the gas cylinder storage portion 9, so the operation portion 17
It can be seen that the portion b does not match the position of the engaging piece 26. The nozzle lever 18 may be directly engaged with the operation portion 17b.

When the operating portion 12a of the operating lever 12 inside the handle portion 8 is pulled with a finger to rotate clockwise about the support shaft 19, the operating portion 12b pushes the link lever 20 downward, and the link lever 20 moves downward. The pressing portion 20b of 20 is the nozzle lever 1
8. The engaging piece 26 is pushed down, whereby the operating portion 17b of the nozzle cap 17 is pressed, and the gas is discharged from the nozzle 17a toward the gas inlet 21 that is the base of the support pipe 2 to supply the gas in the pipe. It is discharged from the tip side through the passage 26.

FIG. 7 is an enlarged view of the gas cylinder housing portion 9 side of FIG. 6 taken out. Gas cylinder 16 used in the present invention
Is a gas discharge from a nozzle 17a provided at the tip of the cylinder, and an operation portion 17b located on the side of the nozzle cap 17.
Is performed by pushing the nozzle lever 18 downward.

FIG. 8 shows the details of the nozzle cap 17 together with the gas cylinder 16 in a side view and a plan view. As shown in FIG. 8A, when the operation portion 17b provided on the side of the nozzle cap 17 is pushed downward,
As shown in (B), the operating portion 17b uses the fulcrum portion 17d formed by the notch 17c as a fulcrum, and pushes down the valve arranged in the nozzle 17a while the operating portion 17b and the nozzle 17a are tilted.

Therefore, when the nozzle lever 18 is pushed downward in FIG. 7, the direction of gas release from the nozzle 17a is not the direction of the cylinder axis 23 but a predetermined angle in the direction of pushing down the nozzle lever 18. The direction inclined by θ is the gas discharge direction 24 of the nozzle 17a.

It has been confirmed experimentally that the inclination angle θ of 24 in the gas discharge direction with respect to the cylinder axis 23 is about 10 degrees in this case. Therefore, in the present invention,
Gas cylinder 1 when the nozzle lever 18 is pushed down
6, so that the pipe axis 22 is positioned in accordance with the actual gas discharge direction 24 from the nozzle 17a, the support pipe is arranged so that the pipe axis 22 has an inclination angle θ with respect to the cylinder axis 23. It is connected and fixed to the tester body 1.

As a result, when the nozzle lever 18 is pushed down by the link lever 20, the test gas is discharged from the nozzle 17a in the gas discharge direction 24 indicated by the arrow which coincides with the pipe axis 22 without directly hitting the inner wall of the pipe. ,
It can be efficiently discharged from the tip through the gas supply passage in the pipe.

Further, when the gas is discharged from the nozzle 17a, the air introduction port 11 is opened laterally, so that the gas discharged from the gas inflow port 21 into the pipe becomes a negative pressure around the nozzle 17 and becomes gas. The gas discharged from the nozzle 17a efficiently flows through the gas supply passage inside the pipe while the air is being introduced from the air introduction port 11 without disturbing the flow of the gas, and is flowed to the tip of the pipe without feeling a time lag and smoke is detected. It can be released around the vessel.

As shown in FIG. 7, the stopper 27 is moved to the lower side of the rope moving lever 25 and brought into a locked state.
Moving to the lower side of the rope moving the lever 25 is inhibited. Further, since the downward movement of the cable movement lever 25 is prohibited, the downward movement of the nozzle lever 18 is prohibited, so that gas is not released even if the operation lever 12 is operated. Therefore, when the test gas must not be released during transportation,
The stopper 27 may be locked.

Further, in this embodiment, the tester main body 1 is made of a highly insulating lightweight material of PBT resin, and is also used in the test of the smoke detector provided in the high voltage electric equipment. /> with extremely ensuring high withstand insulating property, and weight are achieved. By reducing the weight, the total weight of the operation tester can be set to about 960 g (excluding the gas cylinder), the test work and the carrying can be facilitated, and the burden on the operator can be significantly reduced.

Next, the test work by the operation tester in the present invention will be described. First, the cap 14 provided in the gas cylinder storage portion 9 of the tester body 1 is removed, the gas cylinder 16 is stored in the gas cylinder storage portion 9 as shown in FIGS. 6 and 7, and the cap 14 is screwed and fixed.

When the gas cylinder 16 is stored in the gas cylinder storage portion 9, the gas cylinder 16 is pushed in while being rotated and the operation portion 17b is aligned with the position of the engaging piece 26 so that the gas cylinder 16 cannot rotate and the gas cylinder storage portion 9 is rotated. It is possible to securely store the gas cylinder 16 to the back, and it is possible to reliably determine that the gas cylinder 16 has been stored. As a result, the operating portion 17b of the gas cylinder 16 is positioned at the position of the nozzle lever 18 at the lower end of the pressing portion 20b of the link lever 20.

Next, at the test site, as shown in FIG.
The length of the support pipe 2 is adjusted by pulling out the second pipe member 4 according to the height of the support pipe 2 provided on the tip side of the tester body 1 to the ceiling at the place where the test is to be performed. In this case, simply by pulling out the second pipe member 4 from the first pipe member 3, the second pipe member 4 can be held at an arbitrary pulling position by the friction resistance of the rubber stopper without requiring a special fixing operation. .

When the preparation of the operation tester is completed in this manner, the handle portion 10 is held by one hand and the detector cover 7 attached to the end of the support pipe 2 is positioned on the smoke detector to be tested. To match. In this case, since the upper and lower weights are balanced with respect to the handle portion 10, the sensor cover 7 at the tip of the support pipe 2 can be easily and accurately aligned with the smoke sensor on the ceiling surface side to detect the sensor cover. It can be positioned so that it is inside. If the additional cover 13 is provided at the tip of the sensor cover 7 as shown in FIG. 2, the additional cover 13 is aligned with the smoke sensor.

If the detector cover 7 can be positioned with respect to the smoke detector, while holding the handle portion 10 with one hand,
As shown in FIGS. 6 and 7, the nozzle lever 18 of the gas cylinder 16 housed inside is pushed down via the link lever 20 by hooking and pulling the forefinger on the operating portion 12a of the operating lever 12 provided inside. .

Therefore, when the operating portion 17b is pushed down, the test gas is discharged from the nozzle 17a with the direction of the pipe axis 22 as the gas discharge direction 24 as shown in FIG. As it is introduced, it passes through the gas supply passage inside the pipe and is discharged into the sensor cover 7 while being diffused by the diffusion guide 6 at the tip of the pipe in FIG.

On the other hand, in the operation test of the smoke detector in a high place where the maximum length of the second pipe member 4 is pulled out to the maximum, for example, 2 meters, it cannot be reached. By mounting a support pipe on the lower part of the tester main body 1 and further pulling a string on the cord lever 25, a smoke detector installed at a position where the support pipe 2 cannot reach even the maximum value is tested by gas emission. You can

The auxiliary support pipe can be attached to the tester main body 1 by screwing a flange ring at the tip of another pipe member into the screwed portion of the cap holding the cap 14 of the gas cylinder housing portion 9 of FIG.

When the operation tester of the present invention shown in FIG. 1 is put in the trunk of a car or the like and carried with other luggage, the handle portion 1
Since the operation lever 12 is arranged inside 0, the operation lever 12 is not operated even if it hits another luggage. Therefore, even if the gas cylinder is stored in the gas cylinder storage portion 9 and carried, it is possible to reliably prevent erroneous gas release due to a malfunction of the operation lever 12. Further, by locking the stopper 27 to the cord lever 25, it is possible to more reliably prevent erroneous release of gas.

In the above embodiment, the supporting pipe has a two-stage structure and is extensible to be variably adjusted within a range of about 1 to 2 meters in total length. By combining pipes with different heights, the number of stages and the total length can be variably adjusted as needed.

Further, a plurality of types of pipes having different numbers of stages and lengths are prepared in advance, a supporting pipe suitable for a test place or the like is selected, and the supporting pipe is attached to the pipe connecting portion for further test work. Can be done easily. Further, the work can be further facilitated by making the mounting of the support pipe on the pipe connecting portion detachable.

The support pipe 2 is made of FPR resin, and the tester body 1 is made of PBT resin, which is a high insulating material. However, if high withstand voltage is not required at the test site,
Of course, aluminum or other resin may be used.

Further, according to the present invention, the gas cylinder 16 is provided with a nozzle lever on the side of the nozzle 17, and when the nozzle lever 18 is pushed, the gas discharging direction is inclined. For the gas cylinder of the type in which the direction is not inclined, the pipe axis 22 and the cylinder axis 23 may be arranged in the tester body 1.

Further, depending on the type of cylinder, the gas release direction 2
When the inclination angles θ of 4 are different, for example, the gas cylinder storage portion 9 side is configured to be rotatable with respect to the support pipe connection portion 8 side so that an appropriate inclination angle can be variably set. Good.

Further, in the above embodiment, the gas ejector of the present invention was used for the operation tester of the smoke detector, but the gas ejector of the present invention is adapted to the object. By using a gas cylinder filled with the above gas, it can be used for all purposes.

For example, by using a pesticide liquid gas cylinder, it can be used as a sprayer of pesticides. By using the gas ejector of the present invention as a sprayer, it is possible to discharge the insecticide gas while being far away from a nest of insects formed in a high place.

[0077]

As described above, according to the present invention, the main body operation portion, the pipe connection portion, the gas cylinder storage portion,
The handle part and the gas release mechanism have been integrated, and the handle part has a small weight shift even if the entire gas ejector between the support pipe on the front end side and the cylinder storage part on the rear end side is tilted and used, and the center of gravity does not move. By arranging it at the position of the main body operation part, the vertical weight balance with respect to the handle part is properly obtained, and the tip side does not become unnecessarily heavy, so one-handed work with the handle part with one hand is easy and extremely high work Sex is obtained.

[0078] Further telescoping support pipe及beauty most features are integrated main body operation unit aggregated, maneuverability and inconvenience of transportation in such cases as to separate gas cylinder can be solved.

Further, since the gas discharge mechanism is provided with the air introduction port for introducing air at the time of gas discharge to the space around the nozzle at the tip of the gas cylinder, even if the gas is discharged into the pipe, it does not become a negative pressure, By introducing air, the test gas can be efficiently discharged from the pipe tip through the pipe.

[0080] The gas discharge direction of the nozzle of the gas cylinder corresponds to any inclination with respect to the cylinder axial line, and the direction of the axial center line of mounting the gas cylinder is inclined to the direction of axial center line of mounting the pipe member body By arranging it in the operating portion, and thereby discharging the gas in the axial direction of the pipe without hitting the inner wall inside the pipe, the gas can be efficiently passed through the pipe and discharged from the tip.

Since the operating lever provided on the handle portion of the main body operating portion is arranged inside the handle, gas can be released by operating the lever with fingers at the same time while holding the handle portion with one hand. , Make it easier to perform the test work with one hand. Further, since the operating lever is arranged inside the handle, it can reliably prevent the gas incorrectly things hit from being released during transport.

Further, when the support pipe has a multi-stage pipe structure capable of expanding and contracting, an elastic stopper such as rubber is used to hold the expansion / contraction position, so that the supporting pipe can be easily set to an arbitrary length without a special holding structure. Support pipe can be adjusted.

Furthermore, by using a highly insulating lightweight material such as FPR as the support pipe and PBT as the main body operation part, it is possible to guarantee work safety in places such as high voltage power distribution equipment, and as a whole. The reduction in weight facilitates test work and portability, and can significantly reduce the burden on the operator.

Further, by providing the nozzle cap having the operation portion having a shape to engage the nozzle lever on the side, the operation portion is engaged with the position of the nozzle lever when the gas cylinder is stored in the gas cylinder storage portion. It can be positioned reliably.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of the overall configuration of the present invention.

FIG. 2 is an explanatory view of a support post side of FIG.

FIG. 3 is an explanatory view of the diffusion guide of FIG.

4 is an explanatory view of a support structure using a rubber stopper in FIG.

5 is an explanatory view of the tester main body side of FIG.

6 is an explanatory view of the internal structure of the tester main body of FIG. 5 with one cover removed.

7 is an explanatory view of the inclination between the pipe axis and the gas cylinder axis corresponding to the gas discharge direction in FIG. 6;

FIG. 8 is an explanatory view showing the details of the nozzle cap portion of FIG. 7 taken out from the side and plane.

FIG. 9 is an explanatory diagram of a conventional operation tester.

[Explanation of symbols]

1: Tester main body (main body operation part) 2: Support pipe 3: First pipe member 4: Second pipe member 5: Rubber stopper (elastic stopper) 6: diffusion guide 7: Sensor cover 8: Pipe connection 9: Gas cylinder storage section 10: Handle part 11: Operation lever 11: Air inlet 12: Operation lever 13: Additional cover 14: Cap 15: Chain 16: Gas cylinder 17: Nozzle cap 17a: nozzle 17b: operation unit 17e: peripheral wall 18: Nozzle lever 19: Spindle 20: Link lever 21: Gas inlet 22: Pipe axis 23: cylinder axis 24: Gas release direction 25: Cable lever 26: Engagement piece 27: Stopper

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masatoshi Hori 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Within Hochiki Co., Ltd. (72) Rinichiro Iwasaki 2-1043 Kamiosaki, Shinagawa-ku, Tokyo No. Houchiki Co., Ltd. (72) Inventor Yoshiaki Kitajima 2-1043 Kamiosaki, Shinagawa-ku, Tokyo Within Hochiki Co., Ltd. (72) Inventor Shinji Omata 834-1 Takatoden Ki, Tama-ku, Kawasaki-shi, Kanagawa Kogyo Co., Ltd. (56) Reference JP-A-9-229264 (JP, A) JP-A-8-77472 (JP, A) Actual development Sho-59-28789 (JP, U) Utility model registration 2573861 (JP, Y2) ) J. Sho 60-715 (JP, Y2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G08B 17/00-17/12

Claims (11)

(57) [Claims] Claim: What is claimed is: 1. A gas ejector for ejecting gas to a remote object according to the intended use, wherein the gas ejector has a gas outlet opening at its tip and an axial direction provided with a gas supply passage therein. A gas cylinder that detachably houses a stretchable support pipe and a pipe connection part that connects and fixes the support pipe to the tip side, and a gas cylinder that releases gas from the nozzle at the tip of the cylinder by pressing the operating part on the rear end side. a main body operation portion provided with a housing portion, is composed of the main body operation unit is further arranged at a position of balanced the main body operation portion of the weight balance between the supporting pipe and the gas cylinder housing section, with one hand A handle portion that enables holding, and an operating portion of the gas cylinder is pressed by operating a lever provided on the handle portion to release gas into a gas supply passage inside the support pipe, and a pipe tip. Gas ejector, wherein the gas release mechanism for releasing to the outside from the gas discharge port, further comprising a. 2. The gas ejector according to claim 1, wherein the gas discharge mechanism is provided with an air introduction port for introducing air from the outside at the time of gas discharge to the space around the nozzle at the tip of the gas cylinder. A gas ejector characterized by. 3. The gas ejector according to claim 1, wherein the gas cylinder is arranged so that the gas discharge direction of the nozzle when the operating portion of the gas cylinder is pressed coincides with the axial direction of the support pipe. A gas ejector, characterized in that it is arranged in the main body operating part with the direction of the axis to be mounted inclined with respect to the direction of the axis of the support pipe by a predetermined angle. 4. The gas ejector according to claim 1, wherein the handle has a lever disposed inside the handle so that the lever can be operated while being gripped by one hand. 5. The gas ejector according to claim 1, wherein the support pipe has a second pipe member slidably disposed inside a first pipe member connected and fixed to the main body operating portion,
A gas ejector characterized in that an elastic stopper for holding the second pipe at an arbitrary expanded / contracted position by frictional resistance is attached to the tip of the first pipe member. 6. The gas ejector according to claim 1, wherein the support pipe is made of FRP or the like, and the main body operating portion is made of a highly insulating lightweight material such as PBT. 7. The gas ejector according to claim 1, wherein a transparent cover is attached to the end of the support pipe to cover the periphery of the target object and prevent the emission gas from scattering due to the air flow from the outside. A gas ejector characterized by. 8. The gas ejector according to claim 1, wherein a gas diffusion guide for diffusing and discharging the gas to the outside is provided at the gas discharge port at the tip of the support pipe. vessel. 9. The gas ejector according to claim 1, wherein the gas discharge mechanism further includes a cord lever for pressing the operation portion of the gas cylinder to discharge gas by operating a drawstring. Characteristic gas ejector. 10. The gas ejector according to claim 1, wherein the gas discharge mechanism includes a nozzle lever for pressing the operation part of the gas cylinder in accordance with the operation of the lever, in the gas cylinder storage part of the main body operation part. The gas cylinder is provided with a nozzle cap having a nozzle at the tip and an operation part having a shape to engage the nozzle lever on the side, and when the gas cylinder is stored in the gas cylinder storage part, the operation part is a nozzle. A gas ejector characterized in that it is engaged with and positioned at the position of a lever. 11. The gas ejector according to claim 1, wherein the gas cylinder is filled with a test gas for testing the operation of the smoke detector, and is used in a smoke detector operation tester. A gas ejector characterized in that