An electric push rod with anti-shake and anti-stroke functions

Abstract

The invention discloses an electric push rod with anti-shake and anti-stroke functions, which comprises: a sliding seat, a motor is arranged at one end of the sliding seat; It is set on the sliding seat and is connected with the screw in transmission. The sliding block is provided with a toggle block; the double-button limit switch is set on the sliding seat and is electrically connected with the motor. The double-button limit switch is provided with a single opening and The first button and the second button used to cooperate with the dial block, the first button and the second button are arranged in sequence along the sliding direction of the slider; when the dial block presses the first button, the second button pops up, and the double button limit The switch is energized; when the dial block presses the second button, the first button pops up, and the two-button limit switch is powered off. The electric push rod provided by the present invention has anti-shake and anti-stroke functions, and has simple structure, low production cost and long service life, which is beneficial to improving user experience and popularizing production.

Description

technical field [0001] The invention relates to the field of electric push rods, in particular to an electric push rod with anti-shake and anti-stroke functions. Background technique [0002] The electric push rod mainly uses the motor and the worm gear group to drive the screw to rotate forward or reversely, and the screw drives the slider to do reciprocating linear motion. It is widely used in hospital beds, electric chairs, sofas and other equipment, or other occasions that require telescopic movement. middle. [0003] In the current electric push rods on the market, in order to prevent the slider from exceeding the translation range, a micro switch is set on the slider. When the slider moves to the limit position, the slider touches the micro switch to control the motor to power off. Cannot move forward intermittently. However, in the process of use, due to the wear of each component or the machining accuracy is not high, there is a large gap between the components. Af...

AI Technical Summary

Problems solved by technology

[0003] In the current electric push rods on the market, in order to prevent the slider from exceeding the translation range, a micro switch is set on the slider. When the slider moves to the limit position, the slider touches the micro switch to control the motor to power off. Can't move forward intermittently

However, in the process of use, due to the wear of each component or the machining accuracy is not high, there is a large gap between the components. After the slider touches the micro switch, under the action of the stroke or the gravity of the load, the slider will The position of the slider will be offset to get away from the micro switch, and the micro switch will be reset to make its control invalid. The slider will vibrate or move forward continuously, and it will not be able to be positioned accurately, which will easily damage the service life of the motor and the transmission parts.

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