IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0563018
(2006-11-23)
|
등록번호 |
US-7262377
(2007-08-28)
|
발명자
/ 주소 |
- Wei,Chia Chun
- Lin,Yu Jian
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
8 |
초록
▼
A limit switch control device for an actuator is disposed at both ends of a linearly moveable mover and comprises at least: two limit switches, a circuit board, and a connecting rod assembly. The two limit switches are disposed on the circuit board, both ends of the connecting rod assembly define th
A limit switch control device for an actuator is disposed at both ends of a linearly moveable mover and comprises at least: two limit switches, a circuit board, and a connecting rod assembly. The two limit switches are disposed on the circuit board, both ends of the connecting rod assembly define the effective travel length of the mover. One end of the connecting rod assembly is moved by the mover to control the other limit switch. By such arrangements, the limit switch is simplified, and with the arrangement of the connecting rod assembly, the number of the brake devices or the limit switches can be increased as desired. Further, the circuit board and the connecting rod assembly are modular designed.
대표청구항
▼
What is claimed is: 1. A limit switch control device for an actuator comprising at least: two limit switches, a circuit board, and a connecting rod assembly; wherein: the two limit switches are disposed on the circuit board, the circuit board is disposed on a stator of the actuator, a mover of the
What is claimed is: 1. A limit switch control device for an actuator comprising at least: two limit switches, a circuit board, and a connecting rod assembly; wherein: the two limit switches are disposed on the circuit board, the circuit board is disposed on a stator of the actuator, a mover of the actuator triggers one of the limit switches at a start position of the mover's travel path; the connecting rod assembly includes two fixing members, a connecting rod, and at least one elastic member, the two fixing members are fixed at both ends of the connecting rod, each of the fixing members is provided with a driving portion located correspondingly to a predetermined travel path of the mover, a driving portion of the fixing member at an end position of the mover's travel path serves to interfere with the mover, the driving portion of the fixing member at the start position of the mover's travel path is located between the two limit switches, the elastic member is located between the driving portion of the fixing member and the limit switch at the start position of the mover's travel path, the connecting rod assembly cooperates with the elastic member to provide a brake function to the mover when the mover moves to the start position or the end position of the mover's travel path, an abutting protrusion with a guiding slope is formed on the fixing member at the start position of the mover's travel path, and the abutting protrusion serves to trigger the other limit switch. 2. The limit switch control device for an actuator as claimed in claim 1, wherein: a plurality of welding points and electronic circuits are disposed on the circuit board, and the electronic circuits are connected between a control system and the welding points, the circuit board is disposed at the start position and the end position of the predetermined travel path of the mover; the two limit switches are juxtaposed and fixed on the welding points of the circuit board, and a predetermined working space is defined between the limit switches, each of the limit switches is provided with a trigger located correspondingly to the predetermined travel path of the mover; the connecting rod of the connecting rod assembly has a concave-convex structure formed at either end thereof for engaging with the members, the two fixing members are located opposite each other, the driving portion of the fixing member at the start position of the mover's travel path is received in the working space between the two limit switches, and the elastic member is also received in the working space. 3. The limit switch control device for an actuator as claimed in claim 1, wherein the elastic member includes spring, leaf spring, or elastic block. 4. The limit switch control device for an actuator as claimed in claim 2, wherein the elastic member is a spring. 5. The limit switch control device for an actuator as claimed in claim 4, wherein a positioning protrusion is formed on one of the limit switches and is located toward the working space, a driving portion of the fixing member at the start position of the mover's travel path is provided with a positioning protrusion located toward the working space, and the spring is biased between the limit switch and the positioning protrusion of the limit switch.
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