Valve device and flow control device comprising valve device
By integrating the solenoid, solenoid proportional pressure reducing valve, and first switching valve onto a single spool, the valve device addresses the space inefficiency of existing pump capacity control devices, achieving reduced size and reliable automatic failure switching.
JP2025049887APending Publication Date: 2025-04-04KAYABA CO LTD
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Patent Information
- Application Number
- JP2023158373
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-22
- Publication Date
- 2025-04-04
AI Technical Summary
Technical Problem
The existing pump capacity control devices have a large space requirement due to the separate installation of switching valves and electromagnetic proportional pressure reducing valves.
Method used
The valve device integrates a solenoid, a solenoid proportional pressure reducing valve, and a first switching valve onto a single spool, reducing the flow path and accommodating hole size, and allows the solenoid to automatically switch to a fail position when it fails.
Benefits of technology
This integration reduces the size of the valve device, allows for automatic failure detection and switching, and enables reliable control of the pump even if the solenoid fails.
✦ Generated by Eureka AI based on patent content.
Abstract
To downsize a switching valve and an electromagnetic proportional pressure reducing valve.SOLUTION: A valve device 10, 510, 710, or 810 comprises a solenoid 12, an electromagnetic proportional pressure reducing valve 20, 720, or 820, and a first switching valve 30, 530, 730, or 830 for switching from a normal position D, L, N, or P to a fail position E, M, O, or Q when the solenoid 12 fails. A valve element of the electromagnetic proportional pressure reducing valve 20, 720, or 820 and a valve element of the first switching valve 30, 530, 730, or 830 are integrally constituted by one spool 13, 513, 713, or 813.SELECTED DRAWING: Figure 1
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