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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Accused Products
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.
11 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