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Linear actuator convenient to operate

A linear actuator, easy-to-operate technology, applied in the direction of brake type, automatic brake, mechanical drive clutch, etc., can solve the problems of complicated operation and achieve the effect of convenient operation

Pending Publication Date: 2020-08-25
ZHEJIANG JIECHANG LINEAR MOTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, on the existing linear actuators, usually only the clutch device is provided, or only the self-locking device is provided, even if the clutch device and the self-locking device are provided at the same time, the driving components that drive the two devices are usually separated from each other. That is, when the operator needs to control the clutch device and the self-locking device at the same time, the two devices need to be operated independently, so the operation will appear more complicated

Method used

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  • Linear actuator convenient to operate
  • Linear actuator convenient to operate
  • Linear actuator convenient to operate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 7 As shown, this embodiment is a linear actuator, which is also commonly called a linear actuator or an electric push rod. The linear actuator includes a housing, an outer tube 13, an inner tube 14, a driving motor 15, a transmission assembly, Turn the screw rod 20 and the transmission nut 21, the drive motor 15 drives the rotation screw rod 20 to rotate through the transmission assembly, the rotation of the rotation screw rod 20 drives the transmission nut 21 to move axially along the rotation screw rod 20, and the transmission nut 21 is fixed to the inner tube 14 connected, when the drive nut 21 moves axially, it drives the inner tube 14 to move axially relative to the outer tube 13 and the outer shell, and the outer end of the inner tube 14 is connected to the object to be driven. The linear actuator in this embodiment also include:

[0042] The clutch device is arranged between the transmission assembly and the rotating screw mandrel 20,...

Embodiment 2

[0068] Such as Figure 8 to Figure 11 As shown, the general operation principle of the present embodiment is similar to that of the first embodiment, except that there are differences in the specific structures of the self-locking device, the clutch device, the first driving member, and the second driving member.

[0069] The self-locking device of this embodiment: in the first embodiment, the first friction sleeve 41 and the second friction sleeve 42 are arranged side by side in the axial direction, and the outer end faces of the first friction sleeve 41 and the second friction sleeve 42 are opposed, while in this embodiment In an example, the second friction sleeve 42 is set outside the first friction sleeve 41, and the outer end surface of the first friction sleeve 41 is in contact with the inner end surface of the second friction sleeve 42. For the first friction sleeve 41 and the rotating screw The installation between 20 is the same as the first embodiment, the first fri...

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Abstract

The invention discloses a linear actuator convenient to operate, and belongs to the technical field of linear transmission. The linear actuator comprises a driving motor, a transmission assembly, a rotating lead screw, a transmission nut, a clutch device, a self-locking device and a hand-pull release assembly, wherein the clutch device is arranged between the transmission assembly and the rotatinglead screw; the self-locking device is used for generating frictional resistance to the rotating lead screw when the rotating lead screw rotates reversely and comprises a release torsion spring; thehand-pull release assembly comprises a first driving member and a second driving member; the first driving member is connected to the clutch device; the second driving member is used for being connected to the self-locking device; and the hand-pull release assembly comprises an initial state and a fully released state, in the process from the initial state to the fully released state, the first driving member drives the clutch device to disconnect the power connection, and the second driving member drives the release torsion spring to be loosened. The linear actuator has the advantages that the hand-pull release assembly can control the two devices, and the operation is more convenient.

Description

【Technical field】 [0001] The invention relates to a linear actuator with convenient operation, which belongs to the technical field of linear transmission. 【Background technique】 [0002] Linear actuators, also known as electric push rods, are widely used in furniture, medical equipment, solar power generation, etc. The main structure includes a drive motor, a drive worm, a worm wheel, a screw, and a nut. The working principle is that the drive motor drives the drive worm Rotation, the transmission worm meshes with the worm wheel to drive the worm wheel to rotate, the worm wheel to drive the screw to rotate, the screw to rotate to drive the nut to move axially, the nut is generally connected to the inner tube, so as to realize the telescopic movement of the inner tube. [0003] Combined with the application environment of the linear actuator, when the linear actuator encounters a drive motor failure, or a power failure, or other situations where power needs to be cut off, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20F16H25/24F16D11/14F16D59/02F16D65/16H02K7/116F16D125/70F16D127/04
CPCF16H25/205F16H25/2025F16H25/2454F16D11/14H02K7/1166F16D59/02F16D65/16F16H2025/2084F16H2025/209F16H2025/2463F16D2011/008F16D2011/004F16D2127/04F16D2125/70F16D2127/004H02K7/06F16D2125/40F16H2025/2071
Inventor 许欣赵新星
Owner ZHEJIANG JIECHANG LINEAR MOTION TECH
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