Linear actuator

A technology of linear actuators and outer tubes, applied in the direction of electric components, transmission devices, and control of mechanical energy, can solve problems such as inconvenient assembly, complex structure, and increased cost of linear actuators 90
CN101509541AInactive Publication Date: 2009-08-19HIWIN MIKROSYST
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Applications(China)
Current Assignee / Owner
HIWIN MIKROSYST
Publication Date
2009-08-19
Estimated Expiration
Not applicable ¡ inactive patent

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Abstract

The invention discloses a linear actuator, comprising an outer tube structure, a medium tube structure and an inner tube structure which are all of hollow polygonal tubular shapes. The outer tube is used for the medium tube and the inner tube to penetrate and clamp each other by spacing and is internally provided with a thrust gear and at least a tension adjusting device; the thrust gear is provided with a screw rod and a floating nut matching each other by a screw; the floating nut is combined with a pushing post and is pushed by the screw rod; a pulley is arranged at the top of the pushing post to support a drawing-supporting component by pushing; both ends of the drawing-supporting component are fixedly connected between the inner tube and the outer tube; another drawing-supporting component is arranged between the medium tube and the inner tube; the drawing-supporting component crosses the pulley; the tension of the drawing-supporting component is changed after being drawn by the tension adjustment device so that axial expansion and movement among tubes are stabler and more reliable.
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Description

technical field

[0001] The present invention relates to a linear actuator, in particular to a linear actuator that can limit each other when stretching and stretching, stabilize the axial telescopic displacement, and adjust the pre-force and tension of the movement between the tubes by means of a tension adjustment device. transmission. Background technique

[0002] According to the current application range of linear actuators is quite wide, mainly using motors to drive other mechanisms to expand and contract. Examples of known linear actuator technologies:

[0003] Please refer to US Patent No. US 6880416 and see figure 1 , figure 2 As shown, the linear actuator 90 is provided with three-section telescopic tubes 91, 92, 93, and a motor 94 is arranged inside the three-section telescopic tubes 91, 92, 93, and the motor 94 drives a screw structure 95, The screw structure 95 is provided with three screws 96, 97, 98, the three screws 96, 97, 98 are respectively connected wi...

Claims

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