Driver and driver-integrated electric actuator
First Claim
Patent Images
1. A driver comprising:
- a driver circuit that controls a current to be supplied to an electric actuator;
a heat-conducting portion that conducts heat generated in the driver circuit; and
a sealing portion that is fixed to the electric actuator and seals the driver circuit and the heat-conducting portion,wherein the heat-conducting portion is extended to the electric actuator,wherein the heat-conducting portion mounts the driver circuit,wherein the electric actuator comprises;
a fixed core that is a magnetic body;
an electromagnetic coil that is wound around the fixed core;
a valve that is driven depending on an electromagnetic force of the electromagnetic coil; and
a body portion that is in contact with the fixed core and slidably holds the valve, anda distal end of the heat-conducting portion extended to the electric actuator is adjacent to the fixed core.
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Abstract
Provided are a driver and a driver-integrated electric actuator that can suppress a temperature rise of the driver integrated with an electric actuator. A driver circuit of an electric actuator-integrated driver controls a current to be supplied to an electric actuator. A metal member (heat-conducting portion) conducts heat generated in the driver circuit. A driver sealing portion is fixed to the electric actuator and seals the driver circuit and the metal member. The metal member is extended to the electric actuator.
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Citations
23 Claims
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1. A driver comprising:
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a driver circuit that controls a current to be supplied to an electric actuator; a heat-conducting portion that conducts heat generated in the driver circuit; and a sealing portion that is fixed to the electric actuator and seals the driver circuit and the heat-conducting portion, wherein the heat-conducting portion is extended to the electric actuator, wherein the heat-conducting portion mounts the driver circuit, wherein the electric actuator comprises; a fixed core that is a magnetic body; an electromagnetic coil that is wound around the fixed core; a valve that is driven depending on an electromagnetic force of the electromagnetic coil; and a body portion that is in contact with the fixed core and slidably holds the valve, and a distal end of the heat-conducting portion extended to the electric actuator is adjacent to the fixed core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A driver comprising:
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a driver circuit that controls a current to be supplied to an electric actuator; a heat-conducting portion that conducts heat generated in the driver circuit; and a sealing portion that is fixed to the electric actuator and seals the driver circuit and the heat-conducting portion, wherein the heat-conducting portion is extended to the electric actuator, wherein the heat-conducting portion mounts the driver circuit, and the heat-conducting portion comprises a shielding wall that shields an electromagnetic wave from outside of an electromagnetic coil of the electric actuator.
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14. A driver comprising:
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a driver circuit that controls a current to be supplied to an electric actuator; a heat-conducting portion that conducts heat generated in the driver circuit; and a sealing portion that is fixed to the electric actuator and seals the driver circuit and the heat-conducting portion, wherein the heat-conducting portion is extended to and in contact with the electric actuator. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification