Loom Support Body Fixing Structure Without Rotation Interference
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Solution Overview
Problem
Existing loom fixing devices for support bodies often require rotating the support body during fixation, which can cause interference with other parts attached to the sley, complicating the attachment process and reducing workability.
Innovation Solution
A fixing device for a support body in a loom that includes a T-shaped groove on the sley and a fastening member with a T-shaped head, shank, and threaded portion, where the T-shaped head engages with the groove and the threaded portion is tightened with a nut, while a protrusion on the shank and guide surfaces on the support body guide and restrict the rotation of the fastening member, allowing the support body to be fixed without changing its position relative to other parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fastening member is rotated to engage the T-shaped head portion with the T-shaped groove, then the support body is fixed to the sley, but the support body interferes with parts fixed to the sley during the rotation process
Solution Approach 1:
The guide surface is provided in advance to guide the protrusion during the tightening process, ensuring that the T-shaped head portion rotates smoothly into the engagement position without interfering with other parts. This preliminary guiding action prevents interference before it occurs.
Solution Approach 2:
The guide surface acts as an intermediary element between the protrusion and the T-shaped groove, mediating the rotation process. The guide surface enables controlled rotation while preventing interference with surrounding parts, resolving the contradiction between achieving engagement and avoiding interference.
2Ease of manufacture
If the T-shaped head portion is inserted through the front surface opening portion into the T-shaped groove, then the fastening member can be rotated for engagement, but the support body must be rotated together which causes interference
Solution Approach 1:
The fixing device is segmented into independent functional elements: the guide surface on the support body, the protrusion on the fastening member, and the T-shaped engagement structure. This segmentation allows the guide surface to independently control the rotation process without requiring movement of the entire support body.
Solution Approach 2:
The guide surface serves as an intermediary mechanism that decouples the rotation action from the support body position. It enables the T-shaped head portion to rotate into engagement while the support body remains stationary, simplifying the overall fixing process.
3Stability of the object's composition
If the protrusion engages with the restriction surface to restrict rotation, then the T-shaped head portion cannot escape, but the support body needs to rotate during engagement
Solution Approach 1:
The guide surface is provided in advance to facilitate the rotation process before the protrusion engages with the restriction surface. This preliminary guidance enables smooth rotation into the engagement position, after which the restriction surface prevents backward rotation.
Solution Approach 2:
The system transitions from a dynamic state during engagement (where rotation is needed) to a static locked state (where rotation is restricted). The guide surface enables the dynamic rotation phase, while the restriction surface maintains the stable locked state, resolving the contradiction between needing rotation for engagement and needing restriction for stability.
Data Source
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AI summary
There is provided a loom (10) with a fixing device (1) for a support body (40). The fixing device (1) includes a fastening member (30) and the support body (40). The fastening member (30) includes a protrusion (34) protruding from a shank portion (32) in a radial direction (R) of the shank portion (32). The support body (40) includes a restriction surface (52) and a guide surface (51). The restriction surface (52) is configured to restrict rotation of a T-shaped head portion (31) in a direction opposite to an engagement direction (R1) with the restriction surface (52) engaged with the protrusion (34). The guide surface (51) connects the facing surface (40a) to the restriction surface (52). The guide surface (51) guides the protrusion (34) so that the T-shaped head portion (31) rotates in the engagement direction (R1) when the threaded portion (33) is tightened with the nut (35).