Stroke limiting device for electric cylinder and take-up mechanism

Abstract

The invention discloses a stroke limiting device for an electric cylinder and a take-up mechanism. The electric cylinder comprises a base and an extension tube, and the stroke limiting device comprises a box body, a movable member, a block, a pair of switches and the take-up mechanism. The box body is fixed on the base and provided with a wall board, wherein a through hole is formed in the wall board. The movable member comprises a rod body penetrating the through hole in a connecting mode and capable of moving relative to the box body. The block is fixedly connected onto the rod body. The positions of the switches corresponding to the block are fixed on the box body, each switch is provided with a trigger portion for being touched by the block to produce an electrical signal, and the trigger portions are respectively located at two different ends of a moving path of the block. The take-up mechanism comprises a wire body, wherein the wire body is arranged in the extension tube and moves with the extension tube, and one end of the wire body is connected to the movable member. Therefore, the limitation position of a long distance can be controlled by utilizing a small-space action range.

Description

[0001] This application is a divisional application. The filing date of the original application is: February 17, 2011; the application number is: 201110044138.8; the invention name is: stroke limiting device for electric cylinder and its take-up mechanism technical field [0002] The invention relates to an electric cylinder, in particular to a stroke limiting device for the electric cylinder and a wire take-up mechanism thereof. Background technique [0003] There are many types of electric cylinders (Linear Actuator) currently on the market, one of which is to assemble an electric motor and an outer tube on a machine base, place a lead screw on the machine base and use the electric motor to drive the lead screw to rotate. A telescopic tube is screwed on the outside of the lead screw, and an outer tube is sleeved on the outside of the telescopic tube, and one end of the outer tube is fixed on the machine base; in this way, the telescopic tube can be driven by the motor, and...

AI Technical Summary

Problems solved by technology

[0005] However, although the above structure has the purpose of controlling the stroke limit of the electric cylinder, its switch is arranged inside the outer tube. Therefore, the outer tube must be specially formed with a space for the placement of each switch, which not only makes the production of the outer tube difficult but also relatively expensive. In addition, the switches are respectively located at the two ends of the outer tube. In the maintenance process of the damaged components, most of the components of the electric cylinder must be disassembled, which makes the maintenance quite cumbersome and unnecessary. Convenience; in addition, for some electric cylinders with special shapes or specifications, the aforementioned stroke limiting device cannot be installed and set, and needs to be improved and overcome.

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