Motor-driven actuator

An actuator and electric technology, applied in the direction of the transmission device, the friction transmission device, the fastener of the belt, etc., can solve the problems of unstable installation of the synchronous belt 16, poor durability of the synchronous belt 16, slack of the synchronous belt 16, etc.

Inactive Publication Date: 2010-04-07
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, excessive pressure may be applied to the timing belt 16 through the fixing members 17a, 17b, and the durability of the timing belt 16 becomes poor.
[0020] On the other hand, if the tightening force varies according to different operators, and the tightening force of the fastening screw elements 18a, 18b decreases, the timing belt 16 may be loose.
As a result, the installation of the timing belt 16 by the fixing members 17a, 17b is unstable due to the difference in tightening force caused by different operators.

Method used

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  • Motor-driven actuator
  • Motor-driven actuator
  • Motor-driven actuator

Examples

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Embodiment Construction

[0051] refer to figure 1 , reference numeral 20 denotes an electric actuator according to the first embodiment of the present invention.

[0052] The electric actuator 20 includes: an elongated main body 22; End blocks 24a, 24b integrally connected to the two ends of the main body 22; A rotary drive source 26 connected to an end block 24a and driven by an electric signal; the slider 28 ; and a timing belt (driving force transmission belt) 32 which transmits the driving force to the slider 28 through the gear portion 30 a installed in the rotary drive source 26 .

[0053] The electric actuator 20 also includes: a belt adjustment mechanism (tension adjustment mechanism) 34, which adjusts the tension of the timing belt 32; a stopper mechanism 36, which adjusts the displacement of the slider 28; and a control board 38, which is used to control electric actuator.

[0054] The main body 22 includes: a main frame 40 arranged in the axial direction; a hollow subframe 42 arranged su...

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Abstract

An electric actuator comprises a rotary driving source, a timing belt which is circled or orbited under the driving action of the rotary driving source, a slider which is displaced by the timing beltin the axial direction, and a belt-adjusting mechanism which is connected to a side surface of the slider. Both ends of the timing belt are connected to the belt-adjusting mechanism respectively. Thetension of the timing belt is adjusted by rotating an adjusting screw of the belt-adjusting mechanism.

Description

[0001] This application is a divisional application of Chinese patent application 200310115697.9 (application date: October 8, 2003; invention name: electric actuator). technical field [0002] The present invention relates to an electric actuator including a driving force transmission belt for transmitting a rotational driving force of a rotational driving source to a slider so as to move the slider. Background technique [0003] Electric actuators have hitherto been widely used in devices for conveying workpieces, etc., in which a timing belt is driven by a rotational driving force of a rotational driving source such as a motor to move a slider for conveying workpieces. [0004] A timing belt made of resin material is provided with a tension adjusting device for adjusting the tension when the timing belt is slack during assembly or years of use. [0005] As the tension adjusting means for the timing belt, for example, a pair of pulleys are used. The timing belt goes aroun...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F16H19/06F16H7/08B65G25/06F16G3/00F16H19/02
CPCF16H19/0672
Inventor饭田和启
OwnerSMC CORP