Distributor Plate Fluid Device for Compact Hydraulic Sealing
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Solution Overview
Problem
Conventional fluid devices face challenges in achieving a smaller thickness due to the axial size of the restraining member, which hinders the operation by hydraulic oil and results in difficulties in achieving a smaller thickness and tight sealing.
Innovation Solution
A fluid device with a distributor plate sandwiched between two housings, featuring through flow channels and connecting groove flow channels on the end surfaces, allowing fluid distribution between fewer first flow channels and more second flow channels, reducing the device's size and enhancing sealing by eliminating the need for multiple grooves on the outer peripheral surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple grooves are formed on the outer peripheral surface of the restraining member arranged next to each other in the axial direction to create oil channels, then the device can distribute hydraulic oil, but the axial size of the restraining member increases, making it difficult to achieve a smaller thickness
Solution Approach 1:
The invention transitions from forming multiple grooves in the axial direction on the outer peripheral surface to forming grooves on the end surface of the distributor plate. This dimensional change allows oil channels to be created in the radial and circumferential directions on the end surface, eliminating the need for axial arrangement of grooves and thereby reducing the axial size of the restraining member while maintaining the number of oil channels.
Solution Approach 2:
The distributor plate serves as an intermediary component between the first housing and the second housing. It integrates the function of creating multiple oil channels without requiring the restraining member to have multiple axial grooves. The grooves on the distributor plate's end surface act as mediators to distribute hydraulic oil to multiple second flow channels, resolving the contradiction between channel quantity and axial size.
2Quantity of substance
If multiple grooves are formed on the outer peripheral surface of the restraining member, then oil distribution is enabled, but tight sealing becomes difficult to achieve
Solution Approach 1:
The distributor plate acts as an intermediary that integrates multiple flow channel functions. By forming grooves on its end surface rather than on the restraining member's outer peripheral surface, it provides a centralized location for oil distribution while maintaining better sealing. The groove structure on the end surface allows for more effective sealing compared to multiple grooves on the cylindrical surface.
3Ease of manufacture
If the distributor plate uses a simple groove structure on the end surface, then manufacturing is simplified and machining accuracy requirements are reduced, but complex fluid distribution patterns are needed
Solution Approach 1:
The invention uses grooves on the end surface of the distributor plate rather than on the outer peripheral surface. This allows complex fluid distribution patterns to be achieved through groove arrangements in the radial and circumferential directions on a flat surface, which is much easier to manufacture than multiple axial grooves on a cylindrical surface. The end surface grooves can be formed with simpler machining processes while achieving the same or better fluid distribution complexity.
Data Source
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AI summary
A fluid device (1) relating to the present invention includes a first housing (45) having first flow channels (111 to 114), a second housing (2, 3, 33 and 35) having second flow channels (41 and 42) that are larger in number than the first flow channels (111 to 114), and a distributor plate (100) having a third flow channel connecting together a predetermined one of the first flow channels (111 to 114) and corresponding ones of the second flow channels (41 and 42). The distributor plate (100) is sandwiched between the first housing (45) and the second housing (2, 3, 33, 35) in a thickness direction of the distributor plate (100) such that end surfaces (101 and 102) of the distributor plate (100) are in contact respectively with the first and second housings (45 and 2, 3, 33, 35). The third flow channel (103 to 107) includes: a plurality of through flow channels (103) that are arranged next to each other in a circumferential direction and open at the end surfaces (101 and 102); and one or more connecting groove flow channels (104 and 105) extending in the circumferential direction and connecting together the through flow channels (103).