Pulse-hydraulic converter

Abstract

Abstract PURPOSE:To limit the working range of a gap between a core and a plunger, generate a constant force irrespectively of the displacement of an attracted part and contrive to reduce the size of a valve, by using the titled converter for an oil pressure controlling solenoid valve or the like. CONSTITUTION:The pressure inside a pressure chamber 14 is determined through the opening of a pressure inlet port 12 and a pressure outlet port 11 by sliding a pilot spool 9 leftwards or rightwards, thereby balancing the pressure with the resultant force of a spring force exerted on the spool 9 and a magnetic attracting force. The relationship between the gap between the plunger 8 and the core 7 and the attracting force is evaluated as linear by limiting the working range of the gap, and the attracting force and the force of a spring 5 reacting against the attracting force are equalized selecting the rigidity of the spring 5, thereby enabling to generate a force independently of the gap. Accordingly, the oil pressure can be set only in response to an exciting current, and the attracting force can be utilized effectively.

Inventors

• 👤 Hayato Sugawara
• 👤 早人 菅原
• 👤 Shigeru Horikoshi
• 👤 堀越　茂

Bibliographic Details