Hydraulic Distributor Core Abutment for Assembly Stability
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Solution Overview
Problem
During the assembly of hydraulic devices, there is a recurring issue where the distributor's core can slide out of position, leading to a risk of sealing rings falling off due to relative displacement between the core and the distribution crown, which is not held in abutment against other components, causing operational issues.
Innovation Solution
Incorporating an abutment mechanism on either the core or the timing ring that limits the movement of the core relative to the distribution crown along the axis, ensuring a non-zero clearance and preventing the sealing segments from disengaging during assembly, thereby maintaining the distributor's position and preventing accidental falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distributor core and distribution crown are made slidable relative to each other for operational flexibility, then the hydraulic device can function properly, but the core may slide beyond its nominal position during assembly causing sealing rings to fall
Solution Approach 1:
The patent applies preliminary action by providing abutments that pre-limit the movement range of the core relative to the distribution crown before assembly is complete. The abutments are positioned to prevent the core from sliding beyond its nominal position during the assembly process, while still allowing the necessary sliding motion for operational flexibility once assembled.
2Ease of manufacture
If the distributor is designed without abutments to allow free movement, then assembly is simpler, but the core can disengage from the distribution crown leading to loss of sealing elements
Solution Approach 1:
The abutments are incorporated into the distributor design to pre-prevent the harmful effect of core disengagement during assembly. By positioning abutments that limit the core's movement range, the design maintains simplicity while proactively preventing the loss of sealing elements that would occur with completely free movement.
3Reliability
If abutments are added to limit core movement, then the core remains securely positioned during assembly, but the device complexity increases
Solution Approach 1:
The abutment system is segmented into discrete elements that can be independently positioned on either the core or distribution crown. This segmentation allows for minimal additional complexity while achieving the reliability goal, as each abutment can be a simple protrusion or recess rather than a complex mechanism.
Data Source
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AI summary
Distributor (40) for a hydraulic device, comprising a core (50) and a distribution ring (60), the core (50) having a plurality of internal grooves (50A, 50B), the distribution ring (60) having a plurality of external grooves (60A, 60B), said internal (50A, 50B) and external (60A, 60B) grooves being configured to be in fluidic communication and form fluid circulation channels, the core (50) comprising a plurality of sealing segments (52) configured to isolate said fluid circulation channels, the core (50) having an external cross-section decreasing from a distal end (50D) to a proximal end (50P), the distributor (40) being characterized in that the distribution ring (60) comprises a stop (65) configured to limit the displacement of the core (50) relative to the distribution ring (60) in a direction defined by axis (A).