Movement Device Roller Direction-Change Passage Alignment
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Solution Overview
Problem
Existing movement devices require extensive positioning adjustments and are prone to positional deviation due to collision loads, especially in small devices with a single bolt attachment, leading to inefficiencies in assembly and potential misalignment.
Innovation Solution
The movement device incorporates a linear guide system with a track rail and slider configuration, featuring a unique roller direction-change passage design with angled and curved surfaces to prevent positional deviation, utilizing positioning members and guide mechanisms to ensure accurate alignment and secure attachment of the cover body to the moving body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If flat surfaces are used for mating surfaces of the inner peripheral portion and outer peripheral portion of the roller direction-change passage, then the structure is simple, but positioning adjustment is required during assembly and much time is consumed
Solution Approach 1:
The patent applies curvature by forming the inner peripheral portion of the roller direction-change passage with a curved surface instead of a flat surface. This curved surface enables automatic positioning and guidance of the roller during assembly, eliminating the need for manual positioning adjustment and significantly reducing assembly time while maintaining structural simplicity
2Ease of manufacture
If chamfered connection portions and rounded corners are used in the track body, then the structure is easier to manufacture, but collision loads cause positional deviation between the moving body main body and cover body
Solution Approach 1:
The patent applies preliminary anti-action by providing a positioning structure that prevents positional deviation before it occurs under collision loads. The positioning member is designed to maintain precise alignment between the moving body main body and cover body, counteracting the potential harmful effect of collision loads that would otherwise cause misalignment
3Volume of moving object
If only one bolt is used to attach the cover body to the moving body main body in small movement devices, then the device is compact, but the cover body position easily deviates in the rotation direction about the bolt
Solution Approach 1:
The patent introduces a positioning member as an intermediary element between the cover body and moving body main body. This positioning member works in conjunction with the single bolt to prevent rotational deviation of the cover body, maintaining position stability without requiring additional fastening bolts that would increase device size
Data Source
Figure 1~2
Figure 3A
Figure 3B
AI summary
A movement device includes: a track body; and a moving body which includes: a plurality of endless circulation passages; and a roller configured to roll in the plurality of endless circulation passages, the moving body being movable relative to the track body via the roller disposed between the track body and the moving body, The moving body further includes: a moving body main body in which inner peripheral portions of roller direction-change passages configuring the adjacent endless circulation passages are formed to be adjacent to each other on an end surface in a movement direction in which the moving body moves; and a cover body which is attached to the end surface of the moving body main body and in which outer peripheral portions of roller direction-change passages configuring the adjacent endless circulation passages arc formed to be adjacent to each other. The moving body main body and the cover body are positioned by engaging a positioning portion provided between the adjacent inner peripheral portions of the moving body main body with a positioning portion between the adjacent outer peripheral portions of the cover body.