POSITIONING ACTUATOR AND MANUFACTURING METHOD
First Claim
1. A positioning actuator comprising:
- a stator assembly;
a rotor;
a printed circuit provided with electronic components;
a reduction gear for driving a rotary member;
two complementary blocks, a first of which includes a jacket having a thermal conductivity greater than or equal to 1 W/m/K;
the first block incorporating the reduction gear and having a passage for an output shaft of the reduction gear and an open opposing surface;
a second of the block including an overmolding of the stator assembly and having a recess for a rear bearing for the rotor, the second block having a joining face which complements a joining face of the first block; and
the circuit being positioned in a space defined between the first and the second blocks.
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Accused Products
Abstract
A positioning actuator includes a stator assembly and a rotor, a printed circuit provided with electronic components, as well as a reduction gear for driving a rotary member. It includes two complementary blocks, the first block being made up of a shell having thermal conductivity no lower than 1 W/m/K, the first block including the reduction gear and having a passage for the output shaft of the reducing gear as well as an open opposing surface; the second block being formed by overmoulding the stator assembly and having a rear bearing recess for the rotor, the second block having a joining surface which complements a joining surface of the first block. The actuator also includes the electronic circuit which is positioned in a space defined between the first and second blocks. The disclosure also relates to a method for manufacturing such an actuator.
14 Citations
16 Claims
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1. A positioning actuator comprising:
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a stator assembly; a rotor; a printed circuit provided with electronic components; a reduction gear for driving a rotary member; two complementary blocks, a first of which includes a jacket having a thermal conductivity greater than or equal to 1 W/m/K; the first block incorporating the reduction gear and having a passage for an output shaft of the reduction gear and an open opposing surface; a second of the block including an overmolding of the stator assembly and having a recess for a rear bearing for the rotor, the second block having a joining face which complements a joining face of the first block; and the circuit being positioned in a space defined between the first and the second blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for manufacturing an overmolded stator assembly for a positioning actuator, the method comprising:
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positioning the stator assembly in a mold using a gripping device having pins capable of penetrating into complementary orifices, oriented axially, provided on the stator structure; the mold having a central hub of a section complementing the internal section of the stator structure; and at least one pin of the mold angular positioning the stator assembly upon its introduction into the mold using the gripping device. - View Dependent Claims (16)
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Specification