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Rotation apparatus with buffer mechanism

A technology of rotary actuation and buffer mechanism, which is applied in fluid pressure actuators, rotary or swinging piston engines, machines/engines, etc. It can solve the problems of cylinder length elongation and achieve the effect of shortened length and small structure

Inactive Publication Date: 2005-04-20
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there must be a problem that the axial length of the cylinder becomes longer.

Method used

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  • Rotation apparatus with buffer mechanism
  • Rotation apparatus with buffer mechanism
  • Rotation apparatus with buffer mechanism

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Experimental program
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Embodiment Construction

[0027] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In describing the embodiments, members having the same function will be described with the same symbols attached thereto.

[0028] Figure 1 ~ Figure 3 It is a figure showing the first embodiment of the rack and pinion type rotary actuating device of the present invention. The actuating device 1A is a single-pinion type, and the actuating device 1A has a rectangular housing 2 . The housing 2 includes a cylinder bore 5, a rack 6, the first and second pressure chambers 8a, 8b, the first and second ports P 1 ,P 2 , gear 10 and main shaft 11. Its two ends of above-mentioned cylinder hole 5 are sealed by end cover 3,4. The above-mentioned rack 6 slides reciprocally in the cylinder bore 5 by means of the first piston 7a and the second piston 7b provided at both ends. The first and second pressure chambers 8a, 8b are defined on both sides of the rack 6 by th...

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PUM

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Abstract

A rotary actuating device with a buffer adjustment mechanism, which has a rack driven reciprocatingly by air pressure: a stroke end buffer mechanism for buffering the rack to stop at least one of the forward and reverse directions; the buffer mechanism includes an exhaust port, A flow adjustment mechanism and a buffer seal ring, the exhaust port opens to the pressure chamber at a position closer to the end side of the chamber than the orifice, the flow adjustment mechanism restricts the flow rate of the exhaust gas discharged from the exhaust port, and the buffer seal ring Installed on the outer peripheral surface of the upper piston, when the plug is about to reach the stroke end, the above-mentioned orifice is cut off from the pressure chamber and the air in the pressure chamber is discharged from the upper exhaust port through the flow adjustment mechanism.

Description

technical field [0001] The invention relates to a rotary actuating device with a buffer mechanism capable of buffering and stopping a reciprocating main shaft at the end of a rotation stroke. Background technique [0002] Rotary actuators that generate rotational force by air pressure include rack-and-pinion rotary actuators. This rack-and-pinion type rotary actuator inserts a piston with a rack into the cylinder to slide freely, and a gear is meshed with the rack, and is reciprocated by applying air pressure to the pressure chambers formed on both sides of the piston. The rack makes the pinion and the main shaft fixed on the pinion rotate back and forth. [0003] In such a conventional rotary actuator, a mechanical buffer mechanism including a buffer or the like is provided in order to absorb the impact force generated by the inertial energy of the piston when the spindle stops at the rotary stroke end. However, such a mechanical shock absorber has the problems of making ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/06F01C9/00F15B15/08F15B15/12F15B15/22
CPCF01C9/002F15B15/065F15B15/12F15B15/224F15B15/22
Inventor 平野昭弘小岩贤治竹内清
Owner SMC CORP