Electric push rod

A technology of electric push rods and screw rods, applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve problems affecting electric push rods, noise, etc., and achieve the effects of improving accuracy, avoiding noise, and reducing axial clearance

Active Publication Date: 2016-12-21
ZHEJIANG LINIX MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the electric push rod is in use, the screw will move axially to affect the accuracy of the electric push rod; and due to the impact of the screw itself beating, the bearing clearance, the gap between the screw and the nut, and the direction of force during operation, there are The risk of the screw rod hitting the jacking pipe will cause noise

Method used

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Embodiment Construction

[0027] Depend on figure 1 , figure 2 , image 3 As shown, an electric push rod of the present invention includes a box body 1, a screw rod 2 and a motor 3, the motor 3 is linked with the screw rod 2 through a reduction mechanism, and the rotation of the output shaft of the motor 3 can make the screw rod 2 rotate in a circumferential direction. The screw mandrel 2 includes a front fixing section 21, a threaded section 22 and a rear limiting section 23. The front fixing section 21 at the front end of the threaded section 22 is fixed in the casing 1 through the bearing 4. The threaded section 22 and the rear end of the threaded section The rear limiting section 23 extends out of the box body 1 . The nut 5 fitted on the screw 2 is fixed to the jacking pipe 6, the jacking pipe 6 is covered with a conduit 7, the conduit 7 is fixed to the box body 1, and the screw 2 is rotated to make the jacking pipe 6 move axially reciprocatingly relative to the conduit 7 .

[0028] A bearing ...

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PUM

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Abstract

The invention discloses an electric push rod which comprises a casing, a screw rod and a motor. The motor is linked with the screw rod through a speed reduction mechanism. The front end of the screw rod is fixed to the casing. The back end of the screw rod extends to the outer side of the casing. A nut which cooperates with the screw rod is fixed to a top tube which is sleeved by a conduit which is fixed to the casing. The screw rod is rotated such that the top tube makes an axial reciprocating motion relative to the conduit. A bearing room is formed in the casing and a bearing is fixed. The inner ring of the bearing is fixed to the screw rod. A first retaining ring is fixed to the screw rod and is at the front side of the bearing.

Description

technical field [0001] The invention relates to an electric drive device, in particular to an electric push rod. Background technique [0002] The electric push rod includes a driving motor, a reduction mechanism and a screw rod. The driving motor is linked with the screw rod through the reduction mechanism. One end of the screw rod is fixed in the box through a bearing, and the other end of the screw rod is provided with a nut. There is a guide tube outside the pipe, and the guide tube is fixed to the box body. The rotation of the output shaft of the motor can make the screw rod rotate, so that the jacking pipe can perform axial reciprocating motion relative to the guide tube. [0003] When the electric push rod is in use, the screw will move axially to affect the accuracy of the electric push rod; and due to the impact of the screw itself beating, the bearing clearance, the gap between the screw and the nut, and the direction of force during operation, there are There is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/06H02K7/116
CPCH02K7/06H02K7/116
Inventor 马耀辉
Owner ZHEJIANG LINIX MOTOR
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