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Rotary Hook With Bobbin Case For A Lockstitch Sewing Machine Including Means To Reduce The Plays Between Bobbin Case And Basket And To Reduce The Noise Thereof

一种缝纫机、梭壳的技术，应用在平缝缝纫机领域

Active Publication Date: 2014-09-10
CM CERLIANI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent does not in any way address the noise generated by the gap between the bobbin case and the carriage of the hook

Method used

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  • Rotary Hook With Bobbin Case For A Lockstitch Sewing Machine Including Means To Reduce The Plays Between Bobbin Case And Basket And To Reduce The Noise Thereof
  • Rotary Hook With Bobbin Case For A Lockstitch Sewing Machine Including Means To Reduce The Plays Between Bobbin Case And Basket And To Reduce The Noise Thereof
  • Rotary Hook With Bobbin Case For A Lockstitch Sewing Machine Including Means To Reduce The Plays Between Bobbin Case And Basket And To Reduce The Noise Thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] In the drawings, corresponding elements will be denoted by the same reference numerals.

[0038] figure 1 An exploded view of a prior art rotary hook 1 with a horizontal axis of rotation "α" is schematically shown, wherein only elements relevant to the present description will be indicated with reference numerals.

[0039] - shuttle body 2 comprising a cylindrical cavity 11 with a central hole 17 in the example shown ( Figure 12 ), the central hole 17 is adapted to receive a shaft (illustration of the shaft is omitted for clarity of illustration), the shuttle 1 receives movement from the shaft; in a different embodiment (the illustration of the different embodiment is omitted As shown in the figure), the shaft and the shuttle 1 are combined into a whole;

[0040] - Carriage 6, said carriage 6 is free to rotate in the cylindrical cavity 11, said carriage 6 is constrained to the cylindrical chamber by a rib 14, said rib 14 being formed on the outer surface of the carri...

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PUM

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Abstract

A rotary hook (1) of a lockstitch sewing machine is provided. The rotary hook comprises: at least one hook body (2) including a cylindrical cavity (11); a basket (6, 6b) free to rotate in the cylindrical cavity (11); a bobbin case (8, 8b) housed in the basket (6, 6b); and a bobbin (4, 4b) housed in the bobbin case (8, 8b). The rotary hook comprises elements (30, 40, 50, 60, 61, 70) suited to create a friction between the bobbin case (8, 8b) and the basket (6, 6b), so as to prevent the bobbin case (8, 8b) to move freely and to vibrate within the plays present between the bobbin case (8, 8b) and the basket (6, 6b) and to consequently reduce the noise created during the sewing operation.

Description

technical field [0001] The invention relates to a hook (operating with a bobbin case) for a lockstitch sewing machine (having a needle thread and a bobbin thread) for domestic and industrial use, said hook comprising means for lowering the Noise generated by the clearance between the shuttle and the shuttle holder. [0002] The invention also relates to a lockstitch sewing machine comprising such a rotary hook comprising means for reducing the noise generated due to the gap between the bobbin case and the frame of the rotary hook. [0003] The hook can be of the type with a horizontal axis of rotation or of the type with a vertical axis of rotation. Background technique [0004] Lockstitch sewing machines and related rotary hooks are well known and will therefore not be described in detail here, wherein it will only be recalled that the rotary hook operating with the bobbin case comprises at least one shuttle body connected to a shaft, The shuttle body receives motion from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B57/14D05B57/26
CPCD05B57/16D05B69/32D05B57/14
Inventor D·切利亚尼
Owner CM CERLIANI
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