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Sewing machine

A sewing machine and link mechanism technology, applied in sewing machine components, sewing machines, sewing machine control devices, etc., can solve the problems of large-scale sewing machines, increase storage capacity, realize miniaturization, and prevent grease from scattering.

Inactive Publication Date: 2012-09-26
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the diameter of the shaft member increases, the link mechanism increases in size, so there is a problem of increasing the size of the sewing machine as a whole.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] An embodiment of the present invention will be described below with reference to the drawings.

[0048] Such as figure 1 As shown, the sewing machine M has a base plate portion 1, a column portion 2 erected on the right side of the base plate portion 1, and a column portion facing leftward from the upper portion of the column portion 2 in a state opposite to the base plate portion 1 ( figure 1 middle left) extended arm part 3. In the sewing machine M, a thread cutting mechanism (not shown), a shuttle (not shown), and the like are provided inside a bottom plate portion 1 . The shuttle supports a bobbin around which the bobbin thread is wound in a detachable form. The bottom plate portion 1 has a needle plate 33 on its left upper surface.

[0049] A supporting member (not shown) is provided inside the left end of the arm portion 3, and the supporting member supports the needle bar 5 in a slidable manner. The needle bar 5 has a needle 7 at one end. Such as figure 2 ...

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PUM

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Abstract

A sewing machine comprises a linkage mechanism for transferring the driving power at a drive division side to an action division side. The linkage mechanism comprises a plate component, and an axle component capable of being asway supported on a hole part formed on one end of the plate component on the length direction. The plate component comprises an oil storage component opening towards the hole component and for housing the oil for lubricating the sliding contact part of the axle component and the hole component. The oil housed in the oil storage part can increase the lubrification of theaxle component in the hole component.

Description

technical field [0001] The present invention relates to a sewing machine having a link mechanism that transmits a driving force from a driving portion to an operating portion. Background technique [0002] In general, a sewing machine is provided with a plurality of link mechanisms that transmit the driving force on the driving unit side to the operating unit side. The link mechanism includes, for example, a plate member and a shaft member supported swingably in a hole penetrating through the plate member. [0003] Oil is supplied to this link mechanism so that the shaft member slides smoothly in the hole. This oil supply is forced lubrication in which lubricating oil is forcibly sent to the sliding portion of the shaft member. [0004] Japanese Utility Model Application Laid-Open No. 10845, 2010 discloses a reduction gear transmission having an oil reservoir filled with grease on an outer peripheral portion of a shaft member. In the reduction gear, the grease in the oil ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B71/00D05B69/02
Inventor 川岛义人
Owner BROTHER KOGYO KK