Electric Actuator

An electric actuator and electric power technology, applied in electric components, electromechanical devices, electrical components, etc., can solve the problems of increased cost, heavy weight, and large-scale electric actuators.

Active Publication Date: 2016-08-24
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when comparing these two types of electric actuators with an emergency shut-off function, the spring return type operates as a resistance to normal motor drive due to the force exerted by the return spring, and torque must be used to resist this resistance. A large motor has the disadvantages of increasing the size, weight, and cost of the electric actuator

Method used

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Embodiment Construction

[0057] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 It is a schematic circuit diagram of main parts of one embodiment of the electric actuator of this invention.

[0058] exist figure 1 Among them, 21 is a commercial power supply, 22 is a power switch, 23 is a constant voltage circuit that converts AC voltage into a specified DC voltage, 24 is a relay, and 25 is a motor that drives operating terminals (not shown) such as valves and dampers. (DC motor), 26 is the open side limit switch, 27 is the closed side limit switch, 28, 29 are the contacts of the relay 24 (relay contacts), 30 is the storage body (electric double layer capacitor), 31 is equivalent to In the switch unit mentioned in the present invention, the power-on state switching switch of the storage body, Tr1 is a transistor, and R1 and R2 are resistors.

[0059] In this electric actuator 100 , each common terminal of the motor 25 is connect...

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Abstract

To provide an electric actuator that can be maintained without discharging all the power stored in the storage body, without forgetting the operation of returning to the normal use state, and without time constraints. A switch (up and down slide switch) (31) is provided on the passage for supplying electric power from the storage body (30) to the motor (25). A bar member (42) having protrusions (42a), (42b), (42c), and a button (42d) is provided. In the state where the operating end is fully closed and the power supply from the accumulator (30) to the motor (25) is cut off, press the button (42d) to press the gear (35) so that the motor (25) and the output Axis (37) is not connected. Again, the control lever (31a) is pressed up with the protrusion (42b) to make the switch (31) closed. When the power-on state switching switch (31) of the closed state is re-energized, the protrusion (38a) of the cam (38) presses the control lever (31a) by the rotation of the output shaft (37), and automatically returns to the off state. open state.

Description

technical field [0001] The invention relates to an electric actuator for driving operating ends such as valves and dampers. Background technique [0002] Conventionally, in air-conditioning equipment, electric actuators have been used to control the opening and closing of the valves installed in the hot and cold water piping and the opening of the damper to increase and decrease the air volume of the conditioned air passing through the pipes and supplying the air-conditioned area. . [0003] Such a general electric actuator has a motor inside the electric actuator, and operates according to a control command from an air-conditioning controller so that the opening degree of an operating end such as a valve or a damper becomes a set opening degree. [0004] In this type of electric actuator, once the supplied power fails, the opening of the operating end becomes the same as before the power failure, and proper opening control cannot be performed. [0005] Therefore, there ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/04F16K31/05
CPCF16K31/042F16K31/055H02K11/28F16K17/36F16K31/04
Inventor 阿部卓司成田浩昭猿渡亮染谷秀明
Owner YAMATAKE HONEYWELL CO LTD
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