JPS6236748U

JPS6236748U -

Info

Publication number: JPS6236748U
Application number: JP12874585U
Authority: JP
Priority date: 1985-08-23
Filing date: 1985-08-23
Publication date: 1987-03-04

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の正面断面図、第２
図はクラツチの正面図、第３図は第２図の―
矢視図、第４図は排煙口の断面図、第５図は排煙
ダクトの略図、第６図は本考案の一実施例の電気
的構成を示す回路図、第７図及び第８図は同実施
例の動作を説明するための回路図である。１……羽根、２……ダクト、６……紐体、７…
…プーリ、７ａ……回転軸、９……モータ、１１
……クラツチ、Ｒ_１〜Ｒ_３……リレー、ｒ_１１，
ｒ_２１，ｒ_３１，ｒ_３２……リレー接点、Ｂｒ…
…整流回路、Ｄ_１〜Ｄ_６……ダイオード、Ｒｅ_１〜Ｒｅ_３……抵抗、Ｃ_１，Ｃ_２……コンデンサ、
ＳＯＬ……ソレノイド、ＬＳ_１〜ＬＳ_４……リミ
ツトスイツチ。 Fig. 1 is a front cross-sectional view of one embodiment of the present invention;
The figure is a front view of the clutch, and Figure 3 is the same as Figure 2.
4 is a sectional view of the smoke exhaust port, FIG. 5 is a schematic diagram of the smoke exhaust duct, FIG. 6 is a circuit diagram showing the electrical configuration of an embodiment of the present invention, and FIGS. 7 and 8 The figure is a circuit diagram for explaining the operation of the same embodiment. 1...Blade, 2...Duct, 6...String, 7...
...Pulley, 7a...Rotating shaft, 9...Motor, 11
...clutch, R ₁ to R ₃ ... relay, r ₁₁ ,
r ₂₁ , r ₃₁ , r ₃₂ ...Relay contact, Br...
... Rectifier circuit, D ₁ to D ₆ ... Diode, Re ₁ ~ _Re3 ...Resistance, _C1 , _C2 ...Capacitor,
SOL...Solenoid, _LS1 to _LS4 ...Limit switch.

Claims

[Scope of utility model registration request]

Returning the blade from the open state to the closed state of the smoke exhaust port, which has a blade that opens and closes the inside of the duct, an elastic member that urges the blade in the opening direction, and a lock mechanism that restricts the operation of the elastic member. The device is an automatic return device for a smoke exhaust vent, in which a string connected to the blade is wound around the other end of the string, and its forward rotation winds up the string and turns the blade in the closing direction. A pulley to be moved, a motor to rotate the pulley, and a motor provided between the motor and the pulley, which meshes with the pulley as the motor rotates in the forward direction to transmit the rotation of the motor, and meshes with the pulley as the motor rotates in the reverse direction. an auxiliary power source that is charged by the power supplied to the motor during a return operation that rotates the motor in the normal direction to return the blades in the open state to the closed state, and an opening command that is supplied during the return operation. switching means for switching and connecting the auxiliary power source so as to rotate the motor in the opposite direction when the motor is turned off or when the power supply to the motor is cut off. automatic return device.