Chuck Device Retaining Engaging Body Prevents Disengagement
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Solution Overview
Problem
Conventional chuck devices face challenges in maintaining a strong and stable linkage between the rotary nut and the rotary sleeve, leading to potential disengagement during tool usage, which affects retention and productivity.
Innovation Solution
A chuck device design featuring a retaining engaging body fixed to the rotary sleeve, with a rotation transmission part that directly or indirectly transmits the rotary sleeve's rotation to the rotary body, including a middle sleeve body and co-rotation fitting parts, to ensure secure engagement and prevent disengagement, while allowing for easy molding of synthetic resin components for enhanced workability and productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a C-shaped stop ring is placed in a groove of the rotary sleeve to retain the rotary nut or main body, then disengagement prevention is achieved, but the linkage strength between components is insufficient under impact or vibration
Solution Approach 1:
The patent combines the stop ring function with the rotation transmission function into a single integrated component. The retaining engaging body includes both the stop ring portion that prevents disengagement and the rotation transmission portion that transmits rotational force, merging two separate functions into one unified structure that provides both retention and strong mechanical linkage.
Solution Approach 2:
The rotation transmission part is designed with engagement protrusions and grooves that engage beforehand to transmit rotational force from the rotary sleeve to the rotary body. This preliminary engagement ensures that rotational force is transmitted effectively before any disengagement can occur, strengthening the linkage between components.
2Reliability
If a stop ring structure is used to prevent disengagement, then component retention is achieved, but mass-productivity and ease of manufacture are reduced
Solution Approach 1:
By integrating the stop ring and rotation transmission functions into a single retaining engaging body, the patent reduces the number of separate components that need to be manufactured and assembled. This integration simplifies the manufacturing process and improves mass-productivity while maintaining reliable disengagement prevention.
Solution Approach 2:
The retaining engaging body serves multiple functions simultaneously: it acts as a stop ring to prevent disengagement, transmits rotational force from the rotary sleeve to the rotary body, and provides structural support. This multi-functionality reduces component count and simplifies manufacturing, thereby improving productivity.
3Ease of operation
If separate stop ring and rotation transmission components are used, then functional clarity is maintained, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent merges the stop ring component and rotation transmission component into a single integrated retaining engaging body. This consolidation reduces the number of parts that need to be handled during assembly, simplifies the assembly process, and reduces device complexity while maintaining all necessary functions.
Data Source
AI summary
A chuck device in which a rotary sleeve provided to a main body is rotated, and by rotation of an annular rotary body which rotates together with the rotary sleeve, jaws screwed together with the rotary body are expanded, contracted, advanced, and retracted, and a tool is gripped by the jaws; the chuck device comprising a retaining engaging body for engaging with the rotary body and preventing the rotary sleeve from coming out of the rotary body; wherein the retaining engaging body is provided to be fixed to a proximal end side of the rotary sleeve; a rotation transmission part for directly or indirectly transmitting the rotation of the rotary sleeve to the rotary body is provided to the retaining engaging body; and the rotation of the rotary sleeve is transmitted to the rotary body via the retaining engaging body, and the rotary body rotates together with the rotary sleeve.