Coupling member and inkjet recording device

The coupling member design for inkjet recording apparatuses addresses loose engagement and assembly challenges by using a sequential engagement mechanism with circumferentially spaced holes and protrusions, ensuring secure connection and preventing rattling.

JP2026100237APending Publication Date: 2026-06-19KYOCERA DOCUMENT SOLUTIONS INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
KYOCERA DOCUMENT SOLUTIONS INC
Filing Date
2024-12-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Inkjet recording apparatuses face issues with loose engagement between axially connected coupling members due to increased radial protrusions, leading to assembly difficulties and rattling, which can be exacerbated by larger engagement projections.

Method used

A coupling member design featuring a first member with circumferentially spaced engagement holes and a second member with corresponding engagement protrusions, allowing for separate engagement operations that maintain secure axial connection without complicating assembly, using a configuration where engagement holes and protrusions engage sequentially to prevent rattling.

Benefits of technology

The design effectively suppresses rattling between axially connected members while simplifying the assembly process, ensuring secure engagement without increasing the complexity of the assembly operation.

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  • Figure 2026100237000001_ABST
    Figure 2026100237000001_ABST
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Abstract

This suppresses rattling between components without compromising the assembly process. [Solution] The coupling member comprises a first member and a second member, the first member having a plurality of engagement holes, and the second member having a plurality of engagement protrusions, the plurality of engagement holes including one pair of first engagement holes and one pair of second engagement holes, the plurality of engagement protrusions including one pair of first engagement protrusions and one pair of second engagement protrusions, when one of the first member and the second member is inserted axially into the other, the first engagement holes and the first engagement protrusions engage, and with the first engagement holes and the first engagement protrusions engaged, the second member is displaced circumferentially relative to the first member, so that the second engagement protrusions engage with the second engagement holes, and the first member and the second member are connected to each other axially.
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