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Linear actuator

A linear drive and rotary drive technology, applied in clutches, transmissions, one-way clutches, etc., can solve problems such as power regeneration and inability to apply durability, and achieve the effects of reducing stress, ensuring safety, and improving durability

Inactive Publication Date: 2011-09-28
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The mechanism of the linear actuator described in Patent Document 1 does have the effect of improving the durability of the motor without maintaining power, but on the contrary, it cannot be applied to the durability of the mechanism itself, which is one of the important purposes of motorization as an actuator. Power regeneration and other issues

Method used

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Embodiment Construction

[0046] Next, use Figure 1 to Figure 7 A linear actuator according to an embodiment of the present invention will be described. figure 1 is a side sectional view of the overall structure of the linear actuator of this embodiment. figure 2 Yes figure 1 Partial enlarged view of part A of, image 3 Yes figure 2 The B-B sectional view, Figure 4 Yes figure 2 C-C cutaway view, Figure 5 of figure 2 D-D cross-sectional view. Image 6 It is an explanatory diagram of a state in which the one-way mechanism part of this embodiment functions and the rotation drive system cannot be reversed, Image 6 (a) and (b) are the D-D sectional view and the C-C sectional view at this time, respectively. Figure 7 It is an explanatory diagram of a state in which the function of the one-way mechanism part of this embodiment is blocked and the rotation drive system can also be reversed, Figure 7 (a) and (b) are the D-D sectional view and the C-C sectional view at this time, respectively....

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Abstract

In a method of utilizing a wedging mechanism as a means for holding an output shaft without requiring a large power, the stress at the contact portion between the parts of the wedged section must be prevented from being increased to prevent the fatigue life of an actuator from being shortened. In this linear actuator for converting the rotational motion of a rotary drive device into a linear motion by a rotational motion-to-linear motion conversion mechanism, a one-way mechanism is assembled in a rotary drive path on the upstream side of the rotational motion-to-linear motion conversion mechanism. Since the output shaft is prevented, with less wedging force, from being driven by an external force, the stress at the contact portion can be reduced.

Description

technical field [0001] The present invention relates to a linear actuator (Japanese: リニニアアクチュエイタ) that converts the rotary motion of a rotary drive source such as a motor into a linear motion to drive an object along a straight line, and particularly relates to a linear actuator suitable for the following situations, such as elevating devices The case where the direction of the load is constant, such as the gravity of the cargo on it; the case where a part of the work done when the actuator moves the object against the load is stored in the form of potential energy, elastic energy of a spring, etc. Background technique [0002] As part of measures against environmental issues and global warming, in recent years, there has been an increasing tendency for the drives of various devices to switch from conventional hydraulic drives to electric drives. In terms of hydraulic equipment, the purpose is to reduce the consumption of power generated by the power regeneration that can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20F16D41/08
CPCB66F9/08B66F3/08F16D41/066F16D41/08F16H25/2454Y10T74/18704F16H25/20
Inventor 早濑功平工贤二山崎胜落合正巳
Owner NIHON KENKI CO LTD