IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0998028
(2009-06-26)
|
등록번호 |
US-8479600
(2013-07-09)
|
우선권정보 |
JP-2009-117079 (2009-05-13) |
국제출원번호 |
PCT/JP2009/002933
(2009-06-26)
|
§371/§102 date |
20110310
(20110310)
|
국제공개번호 |
WO2010/131299
(2010-11-18)
|
발명자
/ 주소 |
- Matsumoto, Atsushi
- Ishikawa, Toshiyuki
- Kanno, Hiroyuki
|
출원인 / 주소 |
- Oki Electric Industry Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
A bi-directional rotary actuator causing the output shaft thereof to output two or more kinds of bi-directional and rotational driving forces. A bi-directional rotary actuator includes a rotary solenoid (101) serving as a driving source, a link body (104) engaged with a shaft (132) such that a rotat
A bi-directional rotary actuator causing the output shaft thereof to output two or more kinds of bi-directional and rotational driving forces. A bi-directional rotary actuator includes a rotary solenoid (101) serving as a driving source, a link body (104) engaged with a shaft (132) such that a rotational force can be transmitted to the shaft, an output element (105) connected to the link body, and switching operation means (106) for selecting connection between the link body and the output element. Transmission of a rotational force between the link body and the output element can be appropriately switched to either gear drive performed by meshing of gears or link drive based on a link ratio, and this allows the actuator to output bi-directional rotary driving forces having two or three rotational angles. The switching described above is performed by movement, in the direction of the axis of the shaft, of the link body by utilizing the repulsive or attractive action of an electromagnetic force. The movement of the link body is performed by direct application of the electromagnetic force, or alternatively, by utilizing the principle of leverage through an arm.
대표청구항
▼
1. A bi-directional rotary actuator, comprising: a rotary solenoid, supported by a base, that supplies a bi-directional rotational force of a predetermined rotational angle;a link body that engages with a shaft of the rotary solenoid to be allowed to move in an axial direction and that transmits a r
1. A bi-directional rotary actuator, comprising: a rotary solenoid, supported by a base, that supplies a bi-directional rotational force of a predetermined rotational angle;a link body that engages with a shaft of the rotary solenoid to be allowed to move in an axial direction and that transmits a rotational force;an output element that selects one engagement assembly, including two or more kinds of different link ratios or rotational force transmission ratios, to receive a rotational force from the link body; anda switching operation assembly that performs the selection of the engagement assembly by a movement in an axial direction of the link body annularly mounted on the shaft. 2. The bi-directional rotary actuator according to claim 1, wherein the engagement assembly between the link body and the output element is either a link engagement or a rotational force transmitting engagement. 3. The bi-directional rotary actuator according to claim 1, wherein the link body includes: an outer ring shaft attached to the shaft to be allowed to move in an axial direction and to transmit the rotational force from the shaft;a gear plate formed to extend from the outer ring shaft in a direction orthogonal to the shaft;an active gear formed on a rotational circumference of the gear plate along a rotational direction; andan insert shaft formed on a side surface of the gear plate in a protruded shape, andwherein a formation position of the insert shaft in the gear plate is set such that a distance from a rotational center of the insert shaft to a rotational center of a shaft of a rotor and a distance from a rotational center of the insert shaft to a rotational center of an output shaft of the output element become a predetermined link ratio. 4. The bi-directional rotary actuator according to claim 1, wherein the output element includes: an output shaft;one or two or more cams, formed from the output shaft in a direction orthogonal to an axis thereof, that have, at a distal end thereof, a bearing hole with a shape allowing the insert shaft formed on the gear plate to be inserted thereto; anda passive gear, formed on the output shaft with a spaced distance from the cam which is equal to or larger than a length of the insert shaft, that has a tooth row meshed with the active gear. 5. The bi-directional rotary actuator according to claim 4, wherein the passive gear is movably and annularly mounted on the output shaft and has a stopper pin, and the stopper pin fits into fitting holes provided at two positions in a base of the cam in a rotational direction to regulate a rotation of the passive gear about the output shaft. 6. The bi-directional rotary actuator according to claim 1, wherein the switching operation assembly, which allows the link body to slide along the shaft, is realized by an electromagnetic force between a magnet disposed at a rear-surface side of a surface on which the insert shaft of the gear plate of the link body is formed and an electromagnetic coil disposed to face a magnetic pole of the magnet. 7. The bi-directional rotary actuator according to claim 1, wherein the switching operation assembly includes: an arm supported to move along a shaft and that applies an operation force to the link body;a magnet disposed on the arm; andan electromagnetic coil disposed to face a magnetic pole of the magnet. 8. The bi-directional rotary actuator according to claim 4, wherein, in formation positions of the two or more cams, two cams are formed on a surface, which is orthogonal to an axis of the output shaft, with an interposing angle of a predetermined rotational angle, anda bearing hole is formed in a distal end of each of the cams in the same rotational radius. 9. The bi-directional rotary actuator according to claim 8, wherein, in the formation of the plural cams, an arc-shaped rib is formed to connect the cams at a position corresponding to a movement trajectory of each of the bearing holes. 10. A bi-directional rotary actuator, comprising: a rotary solenoid, supported by a base, that supplies a bi-directional and rotational force of a predetermined rotational angle;a link body that engages with a shaft of the rotary solenoid to be allowed to move in an axial direction and to transmit a rotational force;an output element that selects one engagement assembly, from two or more kinds of engagement assemblies including an engagement point of a different rotational radius, to receive a rotational force from an outer ring shaft of the link body; anda switching operation assembly that performs a selective engagement between the output element and the link body, by moving the link body connected to the shaft. 11. The bi-directional rotary actuator according to claim 10, wherein the engagement assembly between the link body and the output element is either a link engagement or a rotational force transmitting engagement. 12. The bi-directional rotary actuator according to claim 10, wherein the link body includes: an outer ring shaft attached to the shaft to be allowed to move in an axial direction and to transmit the rotational force from the shaft;a gear plate formed to extend from the outer ring shaft in a direction orthogonal to the shaft;an active gear formed on a rotational circumference of the gear plate along a rotational direction; andan insert shaft formed on a side surface of the gear plate in a protruded shape, andwherein a formation position of the insert shaft in the gear plate is set such that a distance from a rotational center of the insert shaft to a rotational center of a shaft of a rotor and a distance from a rotational center of the insert shaft to a rotational center of an output shaft of the output element become a predetermined link ratio. 13. The bi-directional rotary actuator according to claim 10, wherein the output element includes: an output shaft;one or two or more cams, formed from the output shaft in a direction orthogonal to an axis thereof, that have, at a distal end thereof, a bearing hole with a shape allowing the insert shaft formed on the gear plate to be inserted thereto; anda passive gear, formed on the output shaft with a spaced distance from the cam which is equal to or larger than a length of the insert shaft, that has a tooth row meshed with the active gear. 14. The bi-directional rotary actuator according to claim 13, wherein the passive gear is movably and annularly mounted on the output shaft and has a stopper pin, and the stopper pin fits into fitting holes provided at two positions in a base of the cam in a rotational direction to regulate a rotation of the passive gear about the output shaft. 15. The bi-directional rotary actuator according to claim 10, wherein the switching operation assembly, which allows the link body to slide along the shaft, is realized by an electromagnetic force between a magnet disposed at a rear-surface side of a surface on which the insert shaft of the gear plate of the link body is formed and an electromagnetic coil disposed to face a magnetic pole of the magnet. 16. The bi-directional rotary actuator according to claim 10, wherein the switching operation assembly includes: an arm supported to move along a shaft and applies an operation force to the link body;a magnet disposed on the arm; andan electromagnetic coil disposed to face a magnetic pole of the magnet. 17. The bi-directional rotary actuator according to claim 16, wherein the arm is supported to slide along an axis of a shaft, and includes an operation piece that is formed in a distal-end sliding portion of the arm to engage with the outer ring shaft of the link body and a magnet disposed in a middle portion of the arm. 18. The bi-directional rotary actuator according to claim 13, wherein, in formation positions of the two or more cams, two cams are formed on a surface, which is orthogonal to an axis of the output shaft, with an interposing angle of a predetermined rotational angle, anda bearing hole is formed in a distal end of each of the cams in the same rotational radius. 19. The bi-directional rotary actuator according to claim 18, wherein, in the formation of the bearing hole formed in a distal end of each of the two cams, one of the bearing holes is formed to have a long hole shape and the other is formed to have either a long hole shape or a round hole shape. 20. The bi-directional rotary actuator according to claim 18, wherein, in the formation of the plural cams, an arc-shaped rib that is formed to connect the cams at a position corresponding to a movement trajectory of each of the bearing holes.
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