JP4915584B2 - Smoke detector and test method for smoke detector - Google Patents

Description

  The present invention relates to a smoke detector and a method for testing the smoke detector, for example, a smoke detector and a smoke detector capable of testing the overall function of the smoke detector installed at a high place such as a ceiling. The present invention relates to a test method for a sensor.

A smoke detector installed on the ceiling of a building is connected to a fire receiver to form a fire alarm system. When the smoke detector detects smoke, it outputs a detection signal and the fire alarm system issues an alarm. . Fire alarm systems need to test the normal operation of the equipment at regular intervals. Conventionally, smoke detectors have been tested for operation using smoke generated by burning, such as incense sticks, and test gases injected from gas cylinders. An operation test is performed by applying a test gas. Smoke detectors installed on high ceilings in indoor sports facilities, halls, factories, etc. have been tested with a scaffold, but avoiding the risk of such complicated inspection work and work in high places Therefore, a lifting device is known in which a smoke detector is suspended from a lifting device via a lifting material such as a wire or a belt so as to be lifted and lowered so that a test operation can be performed on the ground (for example, Patent Documents). 1 and 2).
Japanese Patent No. 3677161 JP 2001-28083 A

  By the way, the lifting device described in Patent Document 1 and Patent Document 2 includes a fixed contact disposed in the lifting device and a power supply contact disposed in a lifting part (smoke detector) suspended from a wire. When the unit is in the raised normal position, the fixed contact and the power supply contact are connected to supply power to the smoke detector disposed in the elevating unit. Therefore, when the elevating part is lowered for the test of the smoke detector, the connection between the fixed contact and the power supply contact is interrupted, and the power supply to the smoke detector is not performed.

  On the other hand, it is necessary to comprehensively test that the fire alarm system operates normally as a whole system, not just the smoke detector. In the test where the power supply is cut off by lowering the elevating part where the smoke detector is installed, the smoke detector itself can be inspected, but the overall system cannot be inspected. was there. In order to perform such comprehensive inspections, the smoke detector must be tested with the power supplied in the raised position, and the smoke detector is installed on a high ceiling in indoor sports facilities, halls, factories, etc. However, there is room for improvement in terms of the risks and costs associated with it.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to enable a comprehensive test of a fire alarm system in which a smoke detector is installed on a high ceiling to be safely and easily performed on the ground. It is to provide a method for testing a smoke detector and a smoke detector.

  In order to achieve the above-described object, the present invention provides an elevating device installed at a predetermined height, a smoke detecting unit suspended by the elevating device, and a steady position where the smoke detecting unit is at a predetermined height. A smoke detector having a connection portion electrically connected to the smoke detector when the smoke detector is attached to the smoke detector. .

  In the smoke detector configured as described above, a smoke generating unit that is detachable from the smoke detecting unit that is suspended by the lifting device and can be moved up and down is provided. As a result, even if a smoke detector is placed in a high place such as a high ceiling, the smoke detector is lowered to the ground by the lifting device without using a scaffolding, etc., and the smoke generator can be detected safely and easily. Can be attached to the part. Further, since the lifting device includes a connection portion that is electrically connected to the smoke detection unit when the smoke detection unit is in a steady position at a predetermined height, the smoke generation unit is attached to the smoke detection unit on the ground. Thereafter, the smoke detector is raised to a steady position, and the connection between the lifting device and the smoke detector is electrically connected to prepare the smoke detector for testing.

  Therefore, in this smoke detector, the function of the smoke detector placed at a high place can be tested safely and easily on the ground. This solves the problem that a comprehensive test cannot be performed in the energized state.

  Further, the present invention is characterized in that smoke can be emitted in a state where the smoke generator is attached to the smoke detector.

  In the smoke detector configured as described above, if the smoke detector to which the smoke generator is attached is positioned at a steady position at a predetermined height so as to emit smoke from the smoke generator, Function can be tested safely and easily on the ground.

  The present invention also provides a lifting device installed at a predetermined height, a smoke detection unit suspended by the lifting device and capable of moving up and down, and the smoke detection unit when the smoke detection unit is in a steady position at a predetermined height. A smoke detector having a connection part electrically connected to a part, wherein the smoke sensor is lowered from the steady position, and a smoke generator capable of generating smoke is added to the smoke sensor. After the mounting, the smoke detection unit is raised to the steady position and the smoke detection unit is connected to the connection unit, thereby causing the smoke detection unit to detect smoke generated from the smoke generation unit. Yes.

  In such a smoke detector test method, the smoke detector is lowered from the steady position, the smoke generator is attached to the smoke detector, and then raised to the steady position, and the smoke detector and the lifting device are connected by the connecting portion. Are connected to each other, smoke is generated from the smoke generator and detected by the smoke detector, so that the function of the smoke detector placed at a high place can be tested safely and easily on the ground. It is possible to solve the problem that a comprehensive test cannot be performed in a state in which the smoke detection unit is energized unless a conventional scaffold is assembled.

  According to the present invention, it is possible to solve the problem that a comprehensive test cannot be performed in a state in which the smoke detection unit is energized unless a conventional scaffolding is provided, thereby enabling a smoke detector disposed at a high place such as a ceiling. It is possible to obtain an effect that the function of the above can be safely and easily tested on the ground.

(First embodiment)
Hereinafter, a first embodiment according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state in which a smoke detector of the smoke detector according to the first embodiment of the present invention is lowered, FIG. 2 is a perspective view showing a state in which the smoke detector is disposed at a fixed position, and FIG. Is an electric circuit diagram of the smoke detector, FIG. 4 is a perspective view of the smoke detector to which the smoke generator is attached, and FIG. 5 is a state where the smoke detector and the smoke generator shown in FIG. 4 are separated. FIG. 6 is a cross-sectional view showing a state in which the smoke detector is being tested.

  First, the smoke detector will be described. As shown in FIG. 1 and FIG. 2, the smoke detector 1 is drawn out from the lifting device 3 and the lifting device 3 installed on the high ceiling of an indoor sports facility, hall, factory, etc. via the fixing bracket 2. Alternatively, an elevating body 5 that is suspended by the elevating device 3 so as to be movable up and down by a wound wire 4 is provided. The elevating body 5 is provided with a smoke detection unit 6 that outputs a detection signal when smoke is detected. The lifting device 3 includes a motor and a winding drum (not shown) that is rotated by the motor, and the winding device 5 winds up or feeds the wire 4 by the rotation of the winding drum, and lifts the lifting body 5. Or lower.

  A plurality of such smoke detectors 1 are usually installed in one building, and the electric circuit thereof is as shown in FIG. That is, the lifting / lowering device 3 has a first entry side fixed contact 7a, a second entry side fixed contact 7c, a first exit side fixed contact 7b, and a second exit side fixed contact 7d. The first incoming fixed contact 7a and the second incoming fixed contact 7c are connected to the fire receiver. The first outgoing fixed contact 7 b and the second outgoing fixed contact 7 d are connected to the feed wiring 9.

  The lifting / lowering device 3 'has the same configuration, and the first incoming fixed contact 7a and the second incoming fixed contact 7c are connected to the feed wiring 9, and the first outgoing fixed contact 7b and the second outgoing fixed. The contact 7d is connected to the feed wiring 9 '. Similarly, another lifting device (not shown) is connected to the feed wiring 9 ', and a terminator is connected to the end. That is, a plurality of lifting devices 3 are cascaded between the fire receiver and the terminator.

  The motor M that rotates the winding drum is connected to a normal power supply line for forward rotation (up), reverse rotation (downward), and common. Therefore, the motor M is rotated forward or reverse by the operation of a switch (not shown) connected to the power supply line, and the wire 4 is wound or fed out to raise or lower the lifting body 5. The smoke detection posture is at the highest position (steady position) of the lift 5 and the inspection is possible at the lowered position.

  The elevating body 5 has a first incoming feed contact 8a in contact with the first incoming fixed contact 7a and a second incoming feed contact 8c in contact with the second incoming fixed contact 7c at the raised normal position. The first output side power supply contact 8b is in contact with the first output side fixed contact 7b, and the second output side power supply contact 8d is in contact with the second output side fixed contact 7d.

  The smoke sensing unit 6 is attached to the elevating body 5 and connected between the first incoming power supply contact 8a and the second incoming power supply contact 8c. Further, the connection portion 28 allows the first input side power supply contact 8a and the first output side power supply contact 8b to be connected to each other, and the second input side power supply contact 8c and the second output side power supply contact 8d to be connected to each other. Connected. As a result, the lifting device 3 connects the fire receiver side and the feed wiring 9 through the fixed contacts 7a to 7d and the feeding contacts 8a to 8d, and the lifting device 3 'is connected to the fixed contacts 7a to 7d and the feeding contacts 8a to 8d. The feed wiring 9 and the feed wiring 9 'are connected through the through-hole.

  In this way, the feed lines 9 and 9 'of the power supply line connecting between the fire receiver and the terminator are wired so as to be performed through the smoke detection unit 6, and when the smoke detection unit 6 is activated, It is wired so that the sensing signal is sent to the fire receiver.

  Therefore, when the elevating body 5 is raised by the motor M and is in a steady position, the fixed contacts 7a to 7d and the power supply contacts 8a to 8d come into contact with each other to supply electric power to the smoke detector 6, and the smoke detector 6 When the sensor detects smoke, it sends a detection signal to the fire receiver. When the elevating body 5 is lowered to the floor surface by the motor M, it is possible to attach a smoke generating unit 10 described later to the smoke detecting unit 6. At this time, since the fixed contacts 7a to 7d and the power supply contacts 8a to 8d are separated from each other, the power from the fire receiver is not supplied and the power supply of the entire system is cut off.

  Further, when the power supply to the smoke detector 6 cannot be performed due to any abnormality of the lifting devices 3 and 3 ', that is, when the contacts 7a to 7d and 8a to 8d are separated, the wiring is connected to the lifting body 5 side. As a result, the power supply to the entire system is cut off and an abnormality is detected.

  In the above description, the electric circuit in the case where a plurality of lifting devices 3 and 3 ′ are provided has been described. However, even if the number of lifting devices 3 is one, the same electrical circuit is obtained.

  As shown in FIGS. 4 to 6, a mounting bracket 16 in which a metal plate is formed in a substantially U shape is fixed to the upper surface 5 a of the elevating body 5 with its both side walls 17 facing downward. On both side walls 17, substantially L-shaped engaging grooves 18 are formed so as to face each other.

  The smoke generator 10 includes a substantially bottomed cylindrical housing 11 having an opening 12 on the upper surface. On the outer surface of the housing 11, a pair of locking pieces 19 in which the distal end portion 20 is bent in a substantially L shape are fixed. A gas cylinder 13 is accommodated in the internal space 15 of the housing 11, and when the injection button 22 is pressed, the test gas 14 for confirming the operation of the smoke detector 6 is injected. The size of the opening 12 of the housing 11 is larger than the diameter of the smoke detection unit 6, and the smoke detection unit 6 is inserted from the opening 12 and can be accommodated in the internal space 15. A pair of holes 21 penetrating in the diametrical direction is provided on the outer surface of the housing 11.

  Then, as shown in FIG. 5, the smoke generating unit 10 inserts the smoke detecting unit 6 into the opening 12, and moves the tip 20 of the locking piece 19 in the engagement groove 18 of the side walls 17 in the direction of arrow A. It is inserted and further moved horizontally in the direction of arrow B to be locked to the mounting bracket 16, and attached to the elevating body 5 (smoke detecting unit 6) while the smoke detecting unit 6 is accommodated in the internal space 15.

  Moreover, as shown in FIG. 6, the smoke generation part 10 is equipped with the press lever 23 formed in the substantially U shape. The pressing lever 23 is formed in a substantially U shape by a pair of leg portions 24 and a connecting portion 25 that connects the pair of leg portions 24, and the connecting portion 25 is disposed on the injection button 22 of the gas cylinder 13. And inserted into a pair of holes 21 penetrating the outer surface of the housing 11. Both leg portions 24 of the pressing lever 23 are arranged upward, and the length thereof is set slightly longer than the length from the upper surface of the injection button 22 to the upper surface of the mounting bracket 16 of the lifting body 5.

  The operation test of the smoke detector 1 by the smoke generating unit 10 is performed as follows. That is, the controller M (not shown) is operated to rotate the motor M of the lifting device 3 installed on the high ceiling, and the wire 4 is fed out from the winding drum to lower the lifting body 5. At this time, the contacts 7 a to 7 d and 8 a to 8 d between the lifting device 3 and the lifting body 5 are in a non-contact state, and the power supply to the smoke detection unit 6 is interrupted.

  Then, the engaging piece 19 of the smoke generating part 10 is inserted in the direction of the arrow A in the engaging groove 18 of the mounting bracket 16 of the lifting body 5 lowered to the ground, and further moved horizontally in the direction of the arrow B to attach the mounting bracket. 16 is locked. Thereby, the smoke generation part 10 is attached to the raising / lowering body 5 (smoke detection part 6) in the state in which the smoke detection part 6 was accommodated in the internal space 15 of the smoke generation part 10. This attachment work is performed at a low position where the elevating body 5 is lowered to the ground, and the elevating body 5 and the smoke generating unit 10 are detachable by engaging the mounting bracket 16 and the locking piece 19. Therefore, it can be performed very easily.

  Next, when the control device is operated to wind the wire 4 with the take-up drum and raise the elevating body 5 to the original steady position, the tips of both leg portions 24 of the press lever 23 come into contact with the ceiling 26 and the press lever 23. Press down. Thereby, the injection button 22 of the gas cylinder 13 is pressed by the connecting portion 25 of the pressing lever 23, and the test gas 14 is ejected from the gas cylinder 13.

  At the same time when the test gas 14 is ejected from the gas cylinder 13 or with a slight delay, the fixed contacts 7a to 7d of the lifting / lowering device 3 and the power supply contacts 8a to 8d of the lifting / lowering body 5 come into contact with each other. Supplied to the smoke detector 6). As a result, the smoke detector 6 detects the test gas 14 ejected from the gas cylinder 13 and outputs a detection signal to transmit it to the fire receiver, and the fire alarm system issues an alarm.

  After confirming that the smoke detector 1 operates normally by the above operation, the controller 5 is operated again to rotate the motor M of the elevating device 3 and lower the elevating body 5. At this time, when the pressing lever 23 moves away from the ceiling 26 as the elevating body 5 descends, the pressing of the injection button 22 by the pressing lever 23 is released, so that the ejection of the test gas 14 from the gas cylinder 13 stops. And the raising / lowering body 5 is further lowered | hung, and the smoke generation part 10 is removed from the raising / lowering body 5 (smoke detection part 6) in the reverse procedure. Next, the lifting body 5 is raised to the original steady position, and the test is terminated.

  Conventionally, in a test in a state where the lifting body 5 (smoke detection unit 6) is lowered, power supply to the smoke detection unit 6 is interrupted, so that only a partial operation test of the smoke detection unit 6 can be performed. However, according to the smoke detector 1 of the present invention described above, a comprehensive test of the entire fire alarm system can be performed, and a reliable operation test can be performed.

(Second Embodiment)
Next, the smoke detector of the second embodiment will be described. FIG. 7 is a cross-sectional view showing a state in which the test of the smoke detector according to the second embodiment of the present invention is being performed.

  The smoke generator 30 of the second embodiment of the present invention is the same as the smoke generator 10 of the first embodiment except that the form of the pressing lever 31 that presses the injection button 22 of the gas cylinder 13 is different. Are denoted by the same or corresponding symbols, and description thereof is omitted.

  In a pair of holes 21 provided in a diametrical direction through the housing 11 of the smoke generation unit 30, a pressing lever 31 that contacts the injection button 22 of the gas cylinder 13 is disposed so as to be spanned between the pair of holes 21. ing. A string body 32 is fixed to one end of the press lever 31 protruding outward from the housing 11, and when the string body 32 is pulled downward, the press lever 31 pushes down the injection button 22, and the test gas is discharged from the gas cylinder 13. 14 is ejected.

  In the operation test of the smoke detector 1 by the smoke generator 30 of the second embodiment described above, the smoke detector 6 (elevating body 5) is lowered to smoke as in the smoke detector 1 of the first embodiment. After attaching the generation | occurrence | production part 30, the raising / lowering body 5 is raised to the original steady position. Here, when the operator on the ground pulls the string 32 fixed to one end of the pressing lever 31 downward, the pressing lever 31 pushes down the injection button 22 of the gas cylinder 13, so that the test gas 14 is discharged from the gas cylinder 13. Erupts. The smoke sensing unit 6 senses the test gas 14 ejected from the gas cylinder 13, outputs a sensing signal and transmits it to the fire receiver, and the fire alarm system issues an alarm.

As described above, the smoke sensing unit 6 (elevating body 5) to which the smoke generating unit 30 is attached is positioned at a regular position of a predetermined height, and the fixed contacts 7a to 7d of the elevating device 3 and the power supply contact of the elevating body 5 A comprehensive test of the entire fire alarm system including the smoke detection unit 6 by connecting 8a to 8d to supply power and pulling the string 32 hanging down to a height that can be reached by a worker on the ground. Can be performed safely and easily.
Since other operations and effects are the same as those of the smoke detector 1 according to the first embodiment, description thereof will be omitted.

(Third embodiment)
Next, the smoke detector of the third embodiment will be described. FIG. 8 is a perspective view showing a state in which a smoke generator is attached to a smoke detector according to a third embodiment of the present invention, and FIG. 9 is a diagram in which the smoke detector and smoke generator shown in FIG. 8 are separated. It is a perspective view which shows a state.

  The smoke generator 40 according to the third embodiment of the present invention is the same as the smoke generator 10 of the first embodiment except that the shape of the locking piece is different. A description thereof will be omitted.

  As shown in FIGS. 8 and 9, the pair of locking pieces 41 of the smoke generating unit 40 is formed to be bent in a substantially L shape and is fixed to the side surface of the housing 11. A screw hole 43 through which a mounting screw 44 is inserted is formed in the upper end portion 42 of the locking piece 41. On the other hand, the elevating body 5 is provided with a flange 45 in which a female screw 46 is formed at a position corresponding to the screw hole 43 of the locking piece 41.

Similarly to the smoke detector 1 of the first embodiment, the smoke generating unit 40 is configured such that the mounting screw 44 inserted through the screw hole 43 of the locking piece 41 is inserted into the female screw of the flange 45 in a state where the elevating body 5 is lowered. It is screwed to 46 and attached to the lifting body 5. In addition, as a smoke generation mechanism of the smoke generation part 40, any smoke generation mechanism of 1st or 2nd embodiment can be employ | adopted, and the effect | action is also the same.
Since other operations and effects are the same as those of the smoke detector 1 of the first embodiment, description thereof is omitted.

(Fourth embodiment)
Next, the smoke detector of the fourth embodiment will be described. FIG. 10 is a cross-sectional view showing a state in which a smoke generator is attached to a smoke detector according to a fourth embodiment of the present invention and tested.

  The smoke generator 50 according to the fourth embodiment of the present invention has a different smoke adding mechanism, and the smoke generator 50 of the first embodiment is provided with an incense type smoke generating device 51 in the internal space 15 of the housing 11 instead of the gas cylinder 13. Since it is the same as that of the generation unit 10, the same parts are denoted by the same or corresponding reference numerals, and description thereof is omitted.

As shown in FIG. 10, the smoke detector 1 according to the fourth embodiment is similar to the smoke generator 10 according to the first embodiment, and generates smoke containing a smoke generator 51 that is ignited by lowering the elevating body 5. The unit 50 is attached and raised to a steady position at a predetermined height to connect the fixed contacts 7a to 7d of the elevating device 3 and the power supply contacts 8a to 8d of the elevating body 5 so that electric power is raised and lowered 5 (smoke detecting unit 6). Supply. As a result, the smoke 52 emitted from the smoke generating device 51 is detected by the smoke detector 6 and an alarm is issued, and a comprehensive test of the entire fire alarm system is performed. In addition, the arbitrary structures mentioned above can be employ | adopted for the attachment structure of the raising / lowering body 5 and the smoke generation part 50. FIG.
Since other operations and effects are the same as those of the smoke detector 1 according to the first embodiment, description thereof will be omitted.

(Fifth embodiment)
Next, a smoke detector according to a fifth embodiment will be described. FIG. 11 is a perspective view of a main part showing a structure for attaching a smoke detector and a smoke generator according to a fifth embodiment of the present invention.

  The smoke detector according to the fifth embodiment of the present invention is the same as the smoke detector according to the first embodiment except that the smoke generating unit and the lifting body are different in structure. Reference numerals or equivalent reference numerals are attached and description thereof is omitted.

  As shown in FIG. 11, the pair of locking pieces 61 fixed to the outer surface of the smoke generating portion (not shown) according to the fifth embodiment has a substantially L-shape with the tip end portion 62 facing inward. It is bent and formed. In addition, a pair of square holes 64 having an area slightly larger than the distal end portion 62 of the locking piece 61 is formed in the flange 63 provided in the lifting body 5, and each square hole 64 has an arcuate groove. 65 is formed continuously.

  The pair of locking pieces 61 has their tip portions 62 inserted into the square holes 64 in the direction of the arrow C, and further rotated in the direction of the arrow D to engage with the arc-shaped grooves 65, so that the smoke generating portion is moved up and down the lifting body 5 Attached to. Note that any of the above-described smoke generating mechanisms can be employed as the smoke generating mechanism of the smoke generating unit of the fifth embodiment, and the other actions and effects are the same, and thus the description thereof is omitted.

(Sixth embodiment)
A smoke detector 1A according to the sixth embodiment shown in FIGS. 12A and 12B is a modification of the above-described fourth embodiment. The smoke detector 51 is provided in the internal space 15 of the housing 11 and the housing 11 11 is provided with a substantially bottomed cylindrical lid member 70. The lid member 70 includes a substantially cylindrical main body 72 having a flange 71 and a closing plate 74 that closes an opening 73 on the flange side of the main body 72.
In the lid member 70, the closing plate 74 is fixed to the housing 11, and the main body 72 is urged upward in the drawing by a spring or the like (not shown) until the edge of the opening 73 contacts the closing plate 74. .

Therefore, in the smoke detector 1 </ b> A, the opening 73 of the main body 72 is closed by the closing plate 74 in a state where the smoke generating unit 50 in which the smoke generating tool 51 that is ignited by lowering the elevating body 5 is mounted is attached. Therefore, the smoke 52 generated from the smoke generator 50 does not leak to the outside of the housing 11. Thereby, there is no possibility that other smoke detectors may malfunction.
When the smoke detector 1A is raised to a predetermined height and the upper end of the lid member 70 comes into contact with the ceiling 26, the main body 72 starts to move downward relative to the closing plate 74 and the opening 73 is opened. Further, when the smoke detector 1A rises and reaches a predetermined position, smoke 52 emitted from the smoke generator 51 is detected by the smoke detector 6 and an alarm is issued, and a comprehensive test of the entire fire alarm system is performed. Is called.

(Seventh embodiment)
A smoke detector 1B of the seventh embodiment shown in FIGS. 13A and 13B is a modification of the sixth embodiment described above, and a plate-like lid member 80 is provided on the housing 11. The lid member 80 includes a disk-shaped main body portion 81 having an opening 83 and a closing plate 84 that closes the opening 83 of the main body portion 81, and the closing plate 84 is fixed to the housing 11 and is attached to the main body portion 81. An operation string 85 is connected.
When the smoke detector 1B is raised and reaches a predetermined height, the operator pulls the operating cord 85 downward to open the opening 83 of the main body 81, and the comprehensive test of the entire fire alarm system is performed. Done.

  The smoke detector of the present invention is not limited to the above-described embodiments, and appropriate modifications and improvements can be made.

  The material, shape, dimensions, form, number, location, etc. of the smoke detector, elevating device, smoke detector, smoke generator, connector, etc. exemplified in each of the embodiments described above can achieve the present invention. It is optional and not limited.

It is a perspective view of the smoke detector of a 1st embodiment concerning the present invention. It is a perspective view which shows the state which the smoke detection part of the smoke detector shown in FIG. 1 fell. It is an electric circuit diagram of a smoke detector. It is a perspective view of the smoke detector with the smoke generating part attached. It is a perspective view which shows the state from which the smoke detector and smoke generation part which were shown in FIG. 4 were isolate | separated. It is sectional drawing which shows the state in which the test of a smoke detector is performed. It is sectional drawing which shows the state in which the test of the smoke detector of 2nd Embodiment which concerns on this invention is performed. It is a perspective view which shows the state in which the smoke generation part which is 3rd Embodiment of this invention was attached to the smoke detector. It is a perspective view which shows the state from which the smoke detector and smoke generation part which were shown in FIG. 8 were isolate | separated. It is sectional drawing which shows the state by which the smoke generation part is attached to the smoke detector which is 4th Embodiment of this invention, and the test is done. It is a principal part perspective view which shows the attachment structure of the smoke detector and smoke generation part of 5th Embodiment which concerns on this invention. It is sectional drawing which shows the state by which the smoke generation part is attached to the smoke detector which is 6th Embodiment of this invention, and the test is done. It is sectional drawing which shows the state by which the smoke generation part is attached to the smoke detector which is 7th Embodiment of this invention, and the test is done.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Smoke detector 3 Lifting device 6 Smoke detection part 7a-7d Fixed contact (connection part)
8a to 8d Feed contact (connector)
10 Smoke generator 14 Test gas (smoke)
30 Smoke generator 40 Smoke generator 50 Smoke generator 51 Smoke generator (smoke generator)
52 Smoke

Claims (3)

A lifting device installed at a predetermined height;
A smoke detector suspended and lifted by the lifting device;
A smoke detector comprising: a connection portion electrically connected to the smoke detection unit when the smoke detection unit is in a steady position at a predetermined height;
A smoke detector having a smoke generator detachable from the smoke detector.   The smoke detector according to claim 1, wherein the smoke generator is capable of emitting smoke while being attached to the smoke detector. A lifting device installed at a predetermined height;
A smoke detector suspended and lifted by the lifting device;
A test method for a smoke detector comprising: a connection part electrically connected to the smoke sensing part when the smoke sensing part is in a steady position of a predetermined height,
The smoke sensing unit is lowered from the steady position, and a smoke generating unit capable of generating smoke is attached to the smoke sensing unit, and then the smoke sensing unit is raised to the steady position to connect the smoke sensing unit to the connection unit. And causing the smoke detection unit to detect smoke generated from the smoke generation unit.

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