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Switching device and linear actuator of releasing mechanism

A technology of linear actuators and switching devices, which is applied to transmission devices, transmission device parts, mechanical equipment, etc., can solve the problems of insufficient labor-saving operation, complex structure of switching devices, etc., and achieve the effect of compact structure, simple structure and low cost

Pending Publication Date: 2018-09-28
ZHEJIANG JIECHANG LINEAR MOTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many of the existing linear actuators on the market are equipped with a release mechanism between the transmission parts. The purpose of the release mechanism is that when the drive motor loses power, the nut can reversely drive the screw to rotate, which is equivalent to a release linear actuator. The self-locking force device and the release mechanism need a switch device to control, but the current switch device generally has the problem of complex structure and insufficient labor-saving operation

Method used

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  • Switching device and linear actuator of releasing mechanism
  • Switching device and linear actuator of releasing mechanism
  • Switching device and linear actuator of releasing mechanism

Examples

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Embodiment 1

[0033] Such as Figure 1 to Figure 9 As shown, this embodiment is a switch device and linear actuator of a release mechanism. The linear actuator in this embodiment includes a drive motor 1, a drive worm 2, a worm gear 3, a screw rod 4, a nut 5, and a drive motor 1. The transmission worm 2 is connected, the transmission worm 2 drives the worm wheel 3 to rotate, the rotation of the worm wheel 3 drives the rotation of the screw 4, and the rotation of the screw 4 drives the nut 5 to move axially. In addition, this embodiment also includes a housing 6, an outer tube 7, and an inner tube 8. The nut 5 is connected to the inner tube 8, the housing 6 is connected to the outer tube 7, the drive motor 1 is fixedly installed in the housing 6, and the axial movement of the nut 5 is finally manifested as an axis between the inner tube 8 and the outer tube 7 To the relative displacement.

[0034] In this embodiment, a planetary gear assembly is also provided between the worm gear 3 and the scr...

Embodiment 2

[0085] The difference between this embodiment and the first embodiment is that the one-way locking coupling structure between the worm and the screw is different. In this embodiment, the transmission torsion spring is sleeved on the first and second paddles. In the sheet, the damping ring is sleeved in the transmission torsion spring. In other words, the damping ring is located on the innermost side, the first and second paddles are located on the outermost side, and the transmission torsion spring is located on the damping ring and the first paddle. , Between the second paddle.

[0086] The bending pin of the transmission torsion spring in this embodiment is bent radially outward. When the first paddle transmits torque to the transmission torsion spring, the bending pin is moved in the direction of loosening the transmission torsion spring. When the second paddle transmits torque to the transmission torsion spring, the bending pin is moved toward the tightening direction of the ...

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Abstract

The invention discloses a switching device of a releasing mechanism and belongs to the technical field of embroidering. The releasing mechanism is mounted in a linear actuator; the releasing mechanismincludes a rotating brake component and the releasing mechanism controls the linear actuator in a releasing condition or a locking condition by controlling the rotation of the rotating brake component; the switching device is used for locking and unlocking the rotating brake component and includes a base and a brake torsional spring; and the brake torsional spring includes a torsional spring body, a first pin and a second pin; the torsional spring body is arranged on the rotating brake component in a sleeving mode, the first pin is fixed to the base and the second pin is pulled by a pulling machine; under the action of the pulling machine and the brake torsional spring is shrank in the radial direction to hold tightly the rotating brake component. In addition, the invention also disclosesthe linear actuator. The switching device and the linear actuator of the releasing mechanism have the advantages that the operation is more labor-saving, and the infinitely variable control between the unreleasing condition and the releasing condition can be achieved.

Description

【Technical Field】 [0001] The invention relates to a switch device and a linear actuator of a release mechanism, and belongs to the technical field of linear transmission. 【Background technique】 [0002] Linear actuators, also called electric push rods, are widely used in furniture, medical equipment, solar power generation and other fields. Its main structure includes drive motors, transmission worms, worm gears, screws, and nuts. The working principle is that the drive motor drives the transmission worm. When it rotates, the transmission worm meshes with the worm wheel to drive the worm wheel to rotate. The rotation of the worm wheel drives the screw to rotate. The rotation of the screw drives the nut to move axially. The nut is generally connected with an inner tube to realize the telescopic movement of the inner tube. [0003] Many linear actuators on the market have a release mechanism between the transmission parts. The purpose of the release mechanism is to drive the screw ro...

Claims

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Application Information

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IPC IPC(8): F16H37/12F16H57/10F16F1/14
CPCF16F1/14F16H37/124F16H57/10
Inventor 陆小健胡仁昌邢科亮翟鑫石鑫
Owner ZHEJIANG JIECHANG LINEAR MOTION TECH
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