Multi-copter

Abstract

To solve the difficulty in attaching or detaching a fire detector main body to or from an attachment base by using a multi-copter.SOLUTION: According to an embodiment of the present invention, there is provided a multi-copter including, at an upper part thereof, a sensor holding part capable of holding a fire sensor main body and a contact spring. The contact spring has a contact piece to which a predetermined voltage is applied, and the contact piece supplies a current by being in contact with an energization terminal of an attachment base to which the fire sensor main body is attached.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a multicopter. [Background technology]

[0002] A fire detector such as a smoke detector is installed in a building by attaching the fire detector body to a mounting base that is fixed to the ceiling or the like in advance. The fire detector body attached to the mounting base is also removed for inspection, etc. The fire detector in Patent Document 1 is provided with a blade receiving metal fitting and a contact spring on the base body, which is the mounting base, in order to attach and detach the detector body, which is the fire detector body, to and from the base body, which is the mounting base.

[0003] Fig. 1 shows a conventional fire detector that is attached to a ceiling board C as in Patent Document 1. Fig. 1(a) shows a cross-sectional view of a mounting base 8 attached to a hole in the ceiling board C, and the fire detector main body 2 before being attached to the mounting base 8. Fig. 1(b) shows a cross-sectional view of the mounting base 8 and the fire detector main body 2 attached to the mounting base 8.

[0004] The fire detector is composed of a mounting base 8 that is fixed to a ceiling panel C in advance, and a fire detector main body 2 that is removably attached to the mounting base 8. The mounting base 8 comprises a mounting base main body 81, a flange 82 provided around the mounting base main body 81, and a fixing member 89 provided on the top of the mounting base main body 81. In this specification, the top and bottom are described with the mounting base etc. attached to the ceiling panel C. The fixing member 89 comprises a pressing piece 891 provided on the back side of the mounting base main body 81, a square female screw 892, and a male screw 893 that passes through the pressing piece 891 and is screwed into the square female screw 892. Two sets of pressing piece 891, square female screw 892, and male screw 893 are provided.

[0005] When fixing the mounting base 8 to the ceiling board C, the fixing member 89 and the mounting base main body 81 are inserted into the hole opened in the ceiling board C with both ends of the pressing piece 891 standing on the back side of the mounting base main body 81. Then, by turning the male screw 893, the pressing piece 891 is tightened between the square female screw 892 and the back protrusion 811, thereby expanding the pressing piece 891. With the ceiling board C sandwiched between the outer end of the expanded pressing piece 891 and the flange 82, the mounting base 8 is fixed to the ceiling board C as shown in FIG. 1(a).

[0006] The fire detector main body 2 is held by the operator's hand and brought close to the mounting base 8 from below as shown in Fig. 1(a). After inserting it into the fitting space 83, it is rotated and attached to the mounting base 8 as shown in Fig. 1(b). In addition, in the attached state of Fig. 1(b), the operator can remove the fire detector main body 2 from the mounting base 8 by rotating the fire detector main body 2 in the opposite direction to that used for attachment.

[0007] Figure 2 shows a bottom view of the mounting base 8 attached to a ceiling panel C. Two sets of contact springs 841 and blade receiving fittings 842 are provided in the fitting space 83 of the mounting base 8. The blade receiving fittings 842 are located on the back side of the contact springs 841. The mounting base 8 is surrounded by the ceiling panel C, and the pressing piece 891 is not visible in Figure 2 because it is on the upper side of the ceiling panel C. The base 841a of the contact spring 841 is fixed to the blade receiving fittings 842, and the end 841b is bent in the opposite direction to the blade receiving fittings 842. The end 841b is urged towards the blade receiving fittings 842.

[0008] FIG. 3 shows a top view of the fire detector main body 2. Two blade fittings 22 are attached to the fire detector main body 2 at opposing positions on the detector rear panel 21. FIG. 4 shows an enlarged view of the blade fitting 22 shown in FIG. 3. FIG. 4(a) is a top view of the blade fitting 22, and FIG. 4(b) is a side view of the blade fitting 22. The blade fitting 22 is configured by bending a single conductive plate to form a contact portion 221, an intermediate portion 222, and a fixed portion 223. The portion between the contact portion 221 and the intermediate portion 222 is bent in one direction, and the portion between the intermediate portion 222 and the fixed portion 223 is bent in the opposite direction. A fixing screw hole 224 is provided in the fixed portion 223. The fixing portion 223 is fixed to the detector rear panel 21 by threading a screw into the fixing screw hole 224, thereby fixing the blade fitting 22 to the detector rear panel 21.

[0009] When attaching the fire detector main body 2 to the mounting base 8, the fire detector main body 2 is rotated in the fitting space 83 so that the contact portion 221 of the cutting edge fitting 22 is inserted between the contact spring 841 and the cutting edge receiving fitting 842 of the mounting base 8. The contact portion 221 is then sandwiched between the contact spring 841 and the cutting edge receiving fitting 842. This attaches the fire detector main body 2 to the mounting base 8, and electrically connects the cutting edge fitting 22, which is conductive, with the contact spring 841 and the cutting edge receiving fitting 842. Furthermore, by rotating the fire detector main body 2 in the opposite direction to that used for attachment, the cutting edge fitting 22 comes out from between the contact spring 841 and the cutting edge receiving fitting 842, and the fire detector main body 2 can be removed from the mounting base 8. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 2019-169075 Summary of the Invention [Problem to be solved by the invention]

[0011] The fire detector body is attached to and detached from the mounting base by the worker holding it in his / her hand and rotating it. While a stepladder can be used to perform this work in a typical office building, performing this work on fire detectors installed on the ceilings of high-ceilinged atriums or theaters requires the construction of high scaffolding, which is costly. Therefore, a multicopter-type drone can be considered.

[0012] The blade of the fire detector body is sandwiched between the blade receiving bracket of the mounting base and the contact spring, and a certain amount of torque is required to rotate the fire detector body. However, while a multicopter can generate torque by maneuvering, it is difficult to obtain enough torque to rotate the fire detector body with the blade sandwiched between it while it is flying.

[0013] The present invention aims to provide an apparatus for attaching and detaching a fire detector main body to and from a mounting base using a multicopter. [Means for solving the problem]

[0014] In one embodiment of the present invention, the multicopter has a detector holding portion at the top that can hold the fire detector main body, and a contact spring, the contact spring having a contactor to which a predetermined voltage is applied, and the contactor comes into contact with an electrically conductive terminal of a mounting base to which the fire detector main body is attached, thereby supplying current. [Effects of the Invention]

[0015] According to the present invention, it is possible to use a multicopter to remove the fire detector main body from a mounting base installed at a high place, or to attach the fire detector main body to the mounting base. [Brief explanation of the drawings]

[0016] [Figure 1] A conventional fire detector attached to a ceiling panel. [Figure 2] FIG. [Figure 3] Top view of the fire detector body. [Figure 4] An enlarged view of the blade fittings on the fire detector body. [Figure 5] FIG. 3 is a bottom view of the mounting base in the first embodiment. [Figure 6] FIG. 3 is an enlarged view of the attachment portion in the first direction in the first embodiment. [Figure 7] FIG. 4 is an enlarged view of the attachment portion in the second direction in the first embodiment. [Figure 8] 3 shows a circuit configuration of a mounting base in the first embodiment. [Figure 9] FIG. 10 is a diagram showing a situation in which a multicopter flies near a fire detector in the first embodiment. [Figure 10] FIG. 10 is a diagram showing a state in which the multicopter is connected to the mounting base in the first embodiment. [Figure 11] FIG. 10 is a diagram showing a situation in which a multicopter equipped with a fire detector main body flies near the mounting base in the first embodiment. [Figure 12] FIG. 10 is a view showing the vicinity of the blade receiving metal fitting of the mounting member in the mounting base of the second embodiment. [Figure 13] FIG. 11 is a diagram showing a situation in which a multicopter equipped with a fire detector main body flies near the mounting member in the third embodiment. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0017] As mentioned above, in this specification, up and down are described when the mounting base and the like are attached to the ceiling board C. Fig. 5 shows a bottom view of the mounting base 1 in an embodiment of the present invention. The mounting base 1 comprises a mounting base main body 11 and a flange portion 12 having a side surface shaped like a truncated cone that extends outward. The inside of the mounting base main body 11 forms a fitting space 13 into which the fire detector main body 2 is fitted. This fire detector main body 2 is the same as the conventional fire detector main body 2 shown in Figs. 3 and 4.

[0018] The mounting base body 11 is provided with a mounting member 14 for mounting the fire detector body 2 above the fitting space 13. The mounting member 14 includes a first blade receiving fixture 141, a second blade receiving fixture 142, an actuator 143, a spacing member 144, and an externally exposed power terminal 145. The second blade receiving fixture 142 is provided above the first blade receiving fixture 141 and is not shown in FIG. 5 because it is hidden. The mounting base 1 is circular, and the power terminals 145 are provided in arc shapes with a certain width at two opposing locations on a flange 12 located on the outer periphery of the mounting base 1. In addition to the power terminals 145, an LED lamp 15 is provided on the flange 12. The actuator 143 of the first embodiment is a linear solenoid actuator.

[0019] The mounting base 1 is equipped with a fixing member 19 similar to the fixing member 89 of the mounting base 8 of the conventional example. Male screws 193 are provided in two locations on the fixing member 19. Furthermore, a square female screw 192 is hidden on the back side of the mounting base main body 11. The holding piece 191 is not shown.

[0020] FIG. 6 shows an enlarged view of the mounting portion in Example 1 in a first direction. The first direction is the direction of the arrow A in FIG. 5. When viewed in the direction A with the front side facing downward in FIG. 5, the spacing member 144 is on the left side as shown in FIG. 6. FIG. 7 shows an enlarged view of the mounting portion in Example 1 in a second direction. The second direction is the direction of the arrow B in FIG. 5. FIGS. 6 and 7(a) show a state in which the contact portion 221 of the blade fitting 22 of the fire detector main body 2 is sandwiched between the first blade fitting 141 and the second blade fitting 142 of the mounting base 1. FIG. 7(b) shows a state in which a gap has occurred between the second blade fitting 142 and the blade fitting 22, and FIG. 7(c) shows a state in which the blade fitting 22 has slipped out from between the first blade fitting 141 and the second blade fitting 142.

[0021] The first blade receiving fixture 141 is fixed, and the second blade receiving fixture 142 is movable in a direction away from the first blade receiving fixture 141 by being driven by an actuator 143. The first blade receiving fixture 141 is made of thick metal and serves as the base of the blade receiving fixture so that the blade receiving fixture 22 can be placed on top of it. In terms of being the base of the blade receiving fixture, it corresponds to the blade receiving fixture 842 of the conventional example. The second blade receiving fixture 142 is an elastic leaf spring and corresponds to the contact spring 841 of the conventional example. In Example 1, the contact spring 841 and the blade receiving fixture 842 of the conventional example are configured upside down. This allows the blade receiving fixture 22 to be stably placed on the first blade receiving fixture 141 even if the second blade receiving fixture 142 is thin and highly flexible.

[0022] 6 and 7 show a spacing member 144 having a tapered surface 144c near its tip 144b. As shown in Fig. 6, a base 144a of the spacing member 144 is fixed to the tip of a plunger 143a of an actuator 143. The tip 144b of the spacing member 144 and the tapered surface 144c in its vicinity are inserted between the first blade receiving fixture 141 and the second blade receiving fixture 142.

[0023] When current is supplied to the actuator 143 from the current-carrying terminal 145, the plunger 143a moves in the direction of P in Fig. 6. This causes the tip 144b of the spacer member 144 to be pushed in the direction of P, and the tapered surface 144c pushes the second blade receiving fixture 142 up in the direction of R. Fig. 7(a) shows the state before the plunger 143a moves in the direction of P, and Fig. 7(b) shows the state after the plunger 143a has moved in the direction of the arrow P. In Fig. 7(b), the movement of the plunger 143a causes the spacer member 144 to push the second blade receiving fixture 142 up in the direction of the arrow R, creating a gap between the contact portion 221 of the cutting fixture 22 and the second blade receiving fixture 142.

[0024] As a result, the blade fitting 22 sandwiched between the first blade receiving fitting 141 and the second blade receiving fitting 142 can move freely in the direction of the arrow M in Figure 7(b), and the fire detector main body 2 attached to the mounting base 1 can be easily rotated and removed.

[0025] When the fire detector main body 2 is removed and the current to the actuator 143 is cut off, the plunger 143a is designed to return in the direction opposite to the arrow P shown in Fig. 6. As a result, most of the spacer member 144 comes out from between the first blade receiving fixture 141 and the second blade receiving fixture 142, resulting in the state shown in Fig. 7(c).

[0026] When the fire detector main body 2 is attached to the mounting base 1, current is supplied to the actuator 143 in the state shown in Figure 7(c). This causes the plunger 143a to move in the direction of the arrow P, causing the spacing member 144 to open the gap between the first blade receiving fixture 141 and the second blade receiving fixture 142. This allows the drone to turn slightly on the spot, making it easy to insert the blade receiving fixture 22 between the first blade receiving fixture 141 and the second blade receiving fixture 142.

[0027] In the first embodiment, the fire detector main body 2 can be attached by sandwiching the blade fitting 22 of the fire detector main body 2 between the first blade receiving fitting 141 and the second blade receiving fitting 142. When a current is supplied to the current-carrying terminal 145, the actuator 143 is driven, and the first blade receiving fitting 141 and the second blade receiving fitting 142 are separated from each other.

[0028] (Circuit configuration of mounting base 1) FIG. 8 shows the circuit configuration of the mounting base 1 in the first embodiment. Two conductive terminals 145 are connected to two actuators 143 via a rectifier 146. When a voltage is supplied to the conductive terminals 145, the rectifier 146 rectifies the voltage of whichever of the two conductive terminals 145 has a higher voltage. Then, a current flows through the actuators 143, causing the plungers 143a to protrude. In this way, when a current is supplied between the two conductive terminals 145, the plungers 143a protrude from the two actuators 143, regardless of which has a higher voltage. Furthermore, when the current between the conductive terminals 145 is cut off, the plungers 143a of the actuators 143 retract.

[0029] 5. Therefore, the LED lamp 15 is lit while current is flowing through the actuator 143 and the first blade receiving bracket 141 and the second blade receiving bracket 142 are open. By visually checking the lit state of the LED lamp 15, the operator can determine whether current has been applied and the first blade receiving bracket 141 and the second blade receiving bracket 142 are open, or whether current has not been applied and the first blade receiving bracket 141 and the second blade receiving bracket 142 are closed.

[0030] (Attaching and detaching the fire detector main unit 2 using a multicopter 3) FIG. 9 shows a fire detector mounted on a ceiling board C in Example 1 and a multicopter 3 flying near the fire detector. The fire detector comprises a mounting base 1 fixed to the ceiling board C, which is an installation portion, and a fire detector main body 2 removably attached to the mounting base 1. The mounting base 1 is fixed to the ceiling board C by a fixing member 19. The fixing member 19 has two retaining pieces 191, two square female screws 192, and two male screws 193. By turning the male screws 193, the retaining pieces 191 are tightened between the square female screws 192 and the rear protrusions 111, thereby expanding the retaining pieces 191, and the mounting base 1 is fixed with the ceiling board C sandwiched between both ends of the expanded retaining pieces 191 and the flanges 12.

[0031] A multicopter 3, which is a type of drone, is equipped with multiple propellers 31 and is capable of not only ascending, descending, and moving left and right, but also hovering and turning left and right. The multicopter 3 is equipped with a motor 32 that rotates the propeller 31, an ESC 33 that controls the rotation speed of the motor 32, a control unit 34, a transceiver unit 35, and a battery 36. The control unit 34 controls the rotation speed of the multiple motors 32 to perform flight control of the multicopter 3, such as hovering, ascending, descending, moving left and right, and turning left and right.

[0032] The multicopter 3 of Example 1 is provided with a detector holding portion 37, a pair of contact springs 38, and a camera 39 at its upper portion. The detector holding portion 37 is a cylindrical member with a recess at the top, and the fire detector main body 2 can be placed in the recess at the top. The detector holding portion 37 has a cone-shaped recess at its top, and is provided with a rubber pad (not shown) inside to prevent slipping. A pair of contact springs 38 are provided on both sides of the detector holding portion 37, facing upward. A contact 381 that comes into contact with the current-carrying terminal 145 is formed near the tip of the contact spring 38, and a predetermined voltage is applied between the pair of contacts 381. The camera 39 is attached to the side of the detector holding portion 37, facing upward.

[0033] The method for attaching and detaching the fire detector main unit 2 to the multicopter 3 is as follows. By transmitting a wireless control signal from the controller (not shown) to the transceiver unit 35, the flight of the multicopter 3 is controlled by the control unit 34. In addition, images from the camera 39 are sent to the transceiver unit 35 via the control unit 34, and the image signal is transmitted wirelessly to the display device (not shown). The operator can control the flight of the multicopter 3 by operating the controller while visually checking the image or looking at the display device. Because the camera 39 faces upward, the display device's display is useful when the multicopter 3 approaches the mounting base 1 and delicate positioning adjustments are made. In addition, the image from the camera 39 can also be used for automatic control of the multicopter 3.

[0034] When removing the fire detector main body 2 attached to the mounting base 1 installed on a ceiling board C at a high altitude, the multicopter 3 is flown toward the fire detector attached to the ceiling board C, as shown in FIG. 9. Then, as shown in FIG. 10, the contactor 381 of the multicopter 3 is brought into contact with the energizing terminal 145 of the mounting base 1. The energizing terminal 145 is provided in an arc shape with a certain width on the flange portion 12 of the mounting base 1, as shown in FIG. 5, and the two energizing terminals 145 are arranged in opposing positions with a space between them. The two contactors 381 of the multicopter 3 of Example 1 are arranged in positions where they will come into contact with the two energizing terminals 145.

[0035] When the multicopter 3 is rotated to an appropriate position and the detector holder 37 is brought into contact with the fire detector main body 2, the two contacts 381 come into contact with the two energized terminals 145, as shown in FIG. 10 . A voltage is applied between the two contacts 381 to create a potential difference. When the contacts 381 come into contact with the energized terminals 145, a current flows from the contact springs 38 of the multicopter 3 to the energized terminals 145 of the mounting base 1. The rectifier 146 shown in FIG. 8 then rectifies the current, causing the two actuators 143 to extend their plungers 143 a. Regardless of which of the two energized terminals 145 the high-voltage contacts 381 contact, the rectifier 146 generates a current in a direction that extends the plungers 143 a. Because the current flows only while the contacts 381 are in contact with the energized terminals 145, consumption of the battery 36 can be reduced.

[0036] 7(b), the tapered surface 144c of the spacing member 144 of the protruding plunger 143a pushes up the second blade receiving fixture 142, widening the gap between the first blade receiving fixture 141 and the second blade receiving fixture 142. This releases the contact portion 221 of the blade receiving fixture 22 from the first blade receiving fixture 141 and the second blade receiving fixture 142.

[0037] As shown in FIG. 7(b), when the multicopter 3 is rotated with the contact portion 221 open, the fire detector main body 2 rotates together with the fire detector due to the anti-slip effect of the rubber pad inside the detector holder 37. The rotation of the fire detector main body 2 allows the blade fitting 22 to be easily removed in the direction of the arrow M from between the first blade receiving bracket 141 and the second blade receiving bracket 142, which are spaced apart, even with a small torque. As the multicopter 3 rotates and the blade fitting 22 is removed from between the first blade receiving bracket 141 and the second blade receiving bracket 142, the two contacts 381 move while contacting the arc-shaped current-carrying terminal 145, as shown in FIG. 10. While the contacts 381 and the current-carrying terminal 145 are in contact, current continues to flow to the actuator 143, and the first blade receiving bracket 141 and the second blade receiving bracket 142 remain open even when the multicopter 3 is rotating.

[0038] When the multicopter 3 rotates further and one of the contacts 381 comes off the current-carrying terminal 145, the current is cut off and the plunger 143a returns to its original position. Then, the spacing member 144 is pulled in the direction opposite to the arrow P in Figure 6, and the first blade receiving fixture 141 and the second blade receiving fixture 142 come close to or into contact with each other as shown in Figure 7(c). Also, when one of the contacts 381 comes off the current-carrying terminal 145 as the multicopter 3 descends, the state shown in Figure 7(c) is restored.

[0039] In this way, as shown in Figure 11, the fire detector main body 2 can be stored in the detector holding portion 37 of the multicopter 3 and removed from the mounting base 1 that is attached at a high place. After removing the fire detector main body 2, the multicopter 3 is lowered and the fire detector main body 2 is collected.

[0040] Furthermore, when attaching the fire detector main body 2 to the mounting base 1, the steps for removal can be reversed. First, the fire detector main body 2 is mounted on the detector holder 37 of the multicopter 3, and the multicopter 3 is raised and brought close to the mounting base 1 as shown in FIG. 11. Then, as shown in FIG. 10, the fire detector main body 2 is accommodated in the fitting space 13 of the mounting base 1. This brings the two contacts 381 into contact with the current-carrying terminals 145, and current is supplied. This causes the plunger 143a of the actuator 143 to protrude, creating a gap between the first blade receiving bracket 141 and the second blade receiving bracket 142.

[0041] When the multicopter 3 is rotated in the opposite direction to when it was removed, the fire detector main body 2 rotates together. Then, because the gap between the first blade receiving fitting 141 and the second blade receiving fitting 142 is large, even with a small torque, the contact portion 221 of the blade receiving fitting 22 enters between the first blade receiving fitting 141 and the second blade receiving fitting 142, as shown in Figure 7(b). At this time, the two contactors 381 slide while remaining in contact with the two current-carrying terminals 145, so the gap between the first blade receiving fitting 141 and the second blade receiving fitting 142 remains open.

[0042] When the multicopter 3 is lowered, as shown in Figures 6 and 7(a), the contact portion 221 of the blade fitting 22 is sandwiched between the first blade receiving fitting 141 and the second blade receiving fitting 142. This causes the fire detector main body 2 to be attached to the mounting base 1 and to be electrically connected.

[0043] As described above, the multicopter 3 flies to the position where the mounting base 1 is to be installed. Then, by supplying current from the contactor 381 of the multicopter 3 to the mounting base 1 via the current-carrying terminal 145, the actuator 143 is driven and the first blade receiving fitting 141 and the second blade receiving fitting 142 are separated. By rotating the multicopter 3 in this state, it is possible to insert the blade receiving fitting 22 of the fire detector main body 2 into the space created by the separation or to remove the blade receiving fitting 22. [Example]

[0044] In the first embodiment, the spacing member 144 is inserted between the first blade receiving fixture 141 and the second blade receiving fixture 142 to form a gap and release the blade fitting 22 of the fire detector main body 2. However, the blade fitting 22 may be released by other methods. Fig. 12 shows the configuration of the mounting member 44 in the mounting base 4 of the second embodiment. The configuration of the mounting base 4 of the second embodiment is the same as that of the first embodiment except for the mounting member 44.

[0045] The mounting member 44 of the second embodiment includes a first blade receiving fixture 441, a second blade receiving fixture 442, an actuator 443, and a clamping member 444. Fig. 12(a) shows a state in which the first blade receiving fixture 441 and the second blade receiving fixture 442 are closed, and Fig. 12(b) shows a state in which the first blade receiving fixture 441 and the second blade receiving fixture 442 are open. The first blade receiving fixture 441 has an upward bent portion 441a, and the second blade receiving fixture 442 has a downward bent portion 442a. One end of the bent portion 441a is provided with a tip portion 441b, and the other end is provided with a sloped portion 441c. The bent portion 442a has one end with a tip portion 442b, and the other end is provided with a sloped portion 442c.

[0046] In Example 2, the first blade receiving fitting 441 and the second blade receiving fitting 442 have tip portions 441b and 442b that tend to open due to their own spring properties. The clamping members 444 are made of two fixed cylinders, and press the inclined portion 441c of the first blade receiving fitting 441 and the inclined portion 442c of the second blade receiving fitting 442 from the outside.

[0047] 12(a) shows a state in which no current is flowing through the actuator 443, the plunger 443a does not protrude from the actuator 443, and the first blade receiving fitting 441 and the second blade receiving fitting 442 are pulled toward the actuator 443. In this state, the first blade receiving fitting 441 and the second blade receiving fitting 442 are pressed inward by the clamping member 444, so the gap between the tip end 441b and the tip end 442b is closed.

[0048] FIG. 12(b) shows a state in which current is supplied from the multicopter 3, driving the actuator 443 and causing the plunger 443a to protrude. When the plunger 443a protrudes, the first blade receiving fitting 441 and the second blade receiving fitting 442 move leftward in FIG. 12, and the inclined portions 441c and 442c also move leftward. As a result, the first blade receiving fitting 441 and the second blade receiving fitting 442, which had been trying to spread due to their own springiness, spread, and the tip portions 441b and 442b are separated. The blade receiving fitting 22 of the fire detector main body 2 can be inserted into or removed from the space created by the separation. [Example]

[0049] FIG. 13 shows a mounting base 5 and a multicopter 6 according to a third embodiment. The mounting base 5 according to the third embodiment does not have a slanted peripheral portion like the flange portion 12 according to the first embodiment. The mounting base 5 is circular, and the outer periphery of the mounting base 5 is formed as a side portion 52 having a cylindrical side surface. Electrical terminals 545 of the mounting member 54 are formed at two opposing locations on the side portion 52. One of the electrical terminals 545 is visible in FIG. 13. Both of the pair of electrical terminals 545 are exposed to the outside.

[0050] The multicopter 6 of the third embodiment is equipped with multiple propellers 61 and is capable of not only ascending, descending, and moving left and right, but also hovering and turning left and right. The multicopter 6 is equipped with a motor 62 that rotates the propeller 61, an ESC 63 that controls the rotation speed of the motor 62, a control unit 64, a transceiver unit 65, and a battery 66. The control unit 64 controls the rotation speed of the multiple motors 62 to perform flight control of the multicopter 6, such as hovering, ascending, descending, moving left and right, and turning left and right.

[0051] The multicopter 6 of Example 3 further includes a detector holder 67, a pair of contact springs 68, and a camera 69 on its upper portion. The detector holder 67 is a cylindrical member with a recessed top, and the fire detector main body 2 can be placed in the recessed top portion. The detector holder 67 has a cone-shaped recess at its top, and a rubber pad (not shown) is provided inside to prevent slipping. A pair of contact springs 68 are provided on both sides of the detector holder 67, facing upward. A contact 681 is formed near the tip of the contact spring 68, and the contact 681 contacts the energizing terminal 545 on the inside, and a predetermined voltage is applied between the pair of contacts 681. The camera 69 is attached to the side of the detector holder 67, facing upward.

[0052] The multicopter 6 of Example 3 is the same as the multicopter 3 of Example 1 except for the structure of the contact springs 68. The contact springs 68 of the multicopter 6 are configured so that the contactors 681 sandwich the contact springs 68 from both sides. In Example 3, a current-carrying terminal 545 is brought into contact between the contactors 681 of the pair of contact springs 68 provided on the multicopter 6, and a current flows through the contactors 681. The current flowing through the current-carrying terminal 545 opens the gap between the first blade receiving bracket (not shown) and the second blade receiving bracket (not shown) of the mounting base 5, allowing the blade receiving bracket 22 of the fire detector main body 2 to be easily removed or attached.

[0053] By using a multicopter equipped with the mounting base of the above-described embodiment and the battery (power supply) required to drive the two blade receiving brackets apart, it becomes possible to remove and install the fire detector using a multicopter with a conventional fire detector body. Therefore, when installing or removing a fire detector installed at a high place, an operator can simply operate the multicopter from near the floor to install, remove, and transport the fire detector, improving the ease of installing and removing the detector and improving the safety and workability of inspection work.

[0054] The fire detector body and mounting base in the above embodiment are for a two-terminal type fire detector body with two blade fittings and a mounting base compatible with the two-terminal type fire detector body. However, they may also be used for a four-terminal type fire detector body and mounting base with four blade fittings. A four-terminal type mounting base uses four pairs of first blade receiving fittings and second blade receiving fittings.

[0055] Various mechanisms can be used as the mechanism for separating the first and second blade receiving fittings. In addition, in Example 1, the lower first blade receiving fitting 141 is fixed and the upper second blade receiving fitting 142 moves upward to separate them, but it is also possible to fix the upper second blade receiving fitting as in the conventional example and move the lower first blade receiving fitting to separate them.

[0056] Although two current-carrying terminals are provided in the embodiment, multiple current-carrying terminals may be provided, and three or more current-carrying terminals may also be provided. The current-carrying terminals are preferably made of a material with a slippery surface. They may be metal plates or multiple conductors along the circumference. The contacts may be any type that can pass current while sliding between them and the current-carrying terminals. For example, they may be near the tip of a curved linear spring, or may have a conductive brush attached.

[0057] Furthermore, the specific configuration is not limited to the embodiments, and the present invention includes design changes within the scope of the gist of the present invention. Furthermore, the above-described embodiments can be combined by utilizing each other's technologies as long as there are no particular contradictions or problems in the purpose, configuration, etc. [Explanation of symbols]

[0058] 1 Mounting base, 11 Mounting base body, 111 Back protrusion, 12 Flange portion, 13 Fitting space, 14 Mounting member, 141 First blade receiving bracket, 142 Second blade receiving bracket, 143 Actuator, 143a Plunger, 144 Spacer member, 144a Base, 144b Tip, 144c Tapered surface, 145 Current-carrying terminal, 146 Rectifier, 15 LED lamp, 19 Fixing member, 191 Pressing piece, 192 Square female screw, 193 Male screw, 2 Fire detector body, 21 Detector rear panel, 22 Cutting metal fitting, 221 Contact part, 222 Intermediate part, 223 Fixing part, 224 Fixing screw hole, 3 Multicopter, 31 Propeller, 32 Motor, 33 ESC, 34 Control unit, 35 Transmitter / receiver unit, 36 Battery, 37 Sensor holder, 38 Contact spring, 381 Contact, 39 Camera, 4 Mounting base, 44 Mounting member, 441 First blade receiving fixture, 441a Bent portion, 441b Tip portion, 441c Inclined portion, 442 Second blade receiving fixture, 442a Bent portion, 442b Tip portion, 442c Inclined portion, 443 Actuator, 443a Plunger, 444 Clamping member, 5 Mounting base, 51 Mounting base body, 52 Side portion, 54 Mounting member, 545 Current-carrying terminal, 6 Multicopter, 61 Propeller, 62 Motor, 63 ESC, 64 Control unit, 65 Transmitter / receiver unit, 66 Battery, 67 Sensor holder, 68 Contact spring, 681 Contact, 69 Camera, 8 Mounting base, 81 Mounting base body, 811 Back projection, 82 Flange, 83 Fitting space, 84 Mounting member, 841 Contact spring, 841a Base, 841b End, 842 Blade receiving bracket, 89 Fixing member, 891 Pressing piece, 892 Square female screw, 893 Male screw, C Ceiling board

Claims

1. The upper part is provided with a detector holding part capable of holding the fire detector body and a contact spring, The contact spring has a contact to which a predetermined voltage is applied, The contactor contacts a current-carrying terminal of a mounting base to which the fire detector body is attached, thereby supplying current. A multicopter characterized by

2. The contact spring can abut against the current-carrying terminal from below the mounting base.

2. The multicopter according to claim 1 .

3. The contact spring can come into contact with the energizing terminal by the contacts sandwiching the mounting base from both sides.

2. The multicopter according to claim 1 .

Images