Integrally molded armature for swing-type actuator

Claim 2

A swing-type actuator comprising: (a) a housing comprising two yokes and permanent magnets attached to said yokes with their different magnetic poles opposing each other, a magnetic gap existing between the opposing permanent magnets; (b) a coil having a periphery, and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and an other end to which a function member is fixable; and (d) a hold member encompassing said coil periphery and joining said coil to said one arm end such that said movable coil is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, and said hold member being made of a thermoplastic resin having a modulus of 10 5 kg/cm 2 or more and having substantially the same thickness as said movable coil.

Claim 3

The swing-type actuator according to claim 1, wherein said thermoplastic resin is a liquid crystal polymer.

Claim 4

A swing-type actuator comprising: (a) a housing comprising two yokes and permanent magnets attached to said yokes with their different magnetic poles opposing each other, a magnetic gap existing between the opposing permanent magnets; (b) a coil having a periphery, and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and an other end to which a function member is fixable; and (d) a hold member joining said coil to said one arm end such that said movable coil is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, said hold member being made of a thermoplastic resin, and said arm being provided with at least one finger which is embedded in said hold member to prevent said arm from being detached from said hold member.

Claim 5

A swing-type actuator comprising: (a) a housing comprising two yokes and permanent magnets attached to said yokes with their different magnetic poles opposing each other, a magnetic gap existing between the opposing permanent magnets; (b) a coil having a periphery, and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and an other end to which a function member is fixable; and (d) a hold member joining said coil to said one arm end such that said movable coil is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, said hold member being made of a thermoplastic resin, and said arm being provided with at least one finger which is embedded in said hold member to prevent said arm from being detached from said hold member.

Claim 6

The swing-type actuator according to claim 3, wherein said thermoplastic resin has a modulus of 10 5 kg/cm 2 or more.

Claim 7

The swing-type actuator according to claim 4, wherein said thermoplastic resin is a liquid crystal polymer.

Claim 8

A swing-type actuator comprising: (a) a housing comprising two yokes and permanent magnets attached to said yokes with their different magnetic poles opposing each other, a magnetic gap existing between the opposing permanent magnets; (b) a coil having a periphery, at least two lead wires, and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and an other end to which a function member is fixable; (d) a hold member joining said coil to said one arm end such that said movable coil is swingable in said magnetic gap, and (e) a terminal block made of a thermoplastic resin and having a pair of terminal pins electrically connected to said two lead wires of said movable coil and a partition projecting near said terminal pins for separating said two lead wires from each other, said one arm end, said movable coil and said terminal block being integrally fixed by said hold member, said hold member being made of a thermoplastic resin.

Claim 9

A swing-type actuator comprising: (a) a housing comprising two yokes and permanent magnets attached to said yokes with their different magnetic poles opposing each other, a magnetic gap existing between the opposing permanent magnets; (b) a coil having a periphery, at least two lead wires, and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and an other end to which a function member is fixable; (d) a hold member joining said coil to said one arm end such that said movable coil is swingable in said magnetic gap, and (e) a terminal block made of a thermoplastic resin and having a pair of terminal pins electrically connected to said two lead wires of said movable coil and a partition projecting near said terminal pins for separating said two lead wires from each other, said one arm end, said movable coil and said terminal block being integrally fixed by said hold member, said hold member being made of a thermoplastic resin.

Claim 10

The swing-type actuator according to claim 6, wherein said thermoplastic resin has a modulus of 10 5 kg/cm 2 or more.

Claim 11

The swing-type actuator according to claim 7, wherein said thermoplastic resin is a liquid crystal polymer.

Claim 12

The swing-type actuator according to claim 3 wherein said hold member encompasses the periphery of said movable coil.

Claim 13

The swing-type actuator according to claim 6 wherein said hold member encompasses the periphery of said movable coil.

Claim 14

The swing-type actuator according to claim 3 wherein said hold member has substantially the same thickness as said movable coil.

Claim 15

The swing-type actuator according to claim 6 wherein said hold member has substantially the same thickness as said movable coil.

Claim 16

The swing-type actuator according as in claim 1 wherein the resin material of thermoplastic hold member is molecularly oriented to provide increased flexural modulus in the plane of said arm.

Claim 17

The swing-type actuator according as in claim 3 wherein the resin material of thermoplastic hold member is molecularly oriented to provide increased flexural modulus in the plane of said arm.

Claim 18

The swing-type actuator according as in claim 6 wherein the resin material of thermoplastic hold member is molecularly oriented to provide increased flexural modulus in the plane of said arm.

Claim 19

A swing-type actuator comprising: (a) a housing comprising yoke means and permanent magnet means for defining a magnetic gap; (b) a coil having a periphery and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and another end to which a function member is fixable; and (d) a hold member encompassing said coil periphery and joining said coil to said one arm end such that said movable arm is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, and said hold member being made of a thermoplastic resin having a modulus of 10 5 kg/cm 2 or more and having substantially the same thickness as said movable coil.

Claim 20

A swing-type actuator comprising: (a) a housing comprising yoke means and permanent magnet means for defining a magnetic gap; (b) a coil having a periphery and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and another end to which a function member is fixable; and (d) a hold member encompassing said coil periphery and joining said coil to said one arm end such that said movable arm is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, and said hold member being made of a thermoplastic resin having a modulus of 10 5 kg/cm 2 or more and having substantially the same thickness as said movable coil.

Claim 21

A swing-type actuator comprising: (a) a housing comprising yoke means and permanent magnet means for defining a magnetic gap; (b) a coil having a periphery and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and another end to which a function member is fixable; and (d) a hold member joining said coil to said one arm end such that said movable arm is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, and said hold member being made of a thermoplastic resin, and said arm being provided with at least one finger which is embedded in said hold member to prevent said arm from being detached from said hold member.

Claim 22

A swing-type actuator comprising: (a) a housing comprising yoke means and permanent magnet means for defining a magnetic gap; (b) a coil having a periphery and a thickness for being movable through said magnetic gap; (c) a swingable arm having one end adapted to receive said movable coil and another end to which a function member is fixable; and (d) a hold member joining said coil to said one arm end such that said movable arm is swingable in said magnetic gap, said movable coil being integrally fixed to said one arm end by said hold member, and said hold member being made of a thermoplastic resin, and said arm being provided with at least one finger which is embedded in said hold member to prevent said arm from being detached from said hold member.

Claim 23

The swing-type actuator according to claim 16, wherein said thermoplastic resin is a liquid crystal polymer.

Claim 24

The swing-type actuator according to claim 17, wherein said thermoplastic resin has a modulus of 10 5 kg/cm 2 or more.

Claim 25

The swing-type actuator according to claim 19, wherein said thermoplastic resin is a liquid crystal polymer.

Claim 26

The swing-type actuator according to claim 17, wherein said hold member has substantially the same thickness as said movable coil.

Claim 27

The swing-type actuator according to claim 16, wherein the resin material of thermoplastic hold member is molecularly oriented to provide increased flexural modulus in the plane of said arm.

Claim 28

The swing-type actuator according to claim 17, wherein the resin material of thermoplastic hold member is molecularly oriented to provide increased flexural modulus in the plane of said arm.