Bearing mechanism and sewing machine

A bearing and component technology, applied in sewing machine components, needle seats for sewing machines, bearing components, etc., can solve the problems of grease consumption, grease deterioration, grease sticking, etc.

A bearing and component technology, applied in sewing machine components, needle seats for sewing machines, bearing components, etc., can solve the problems of grease consumption, grease deterioration, grease sticking, etc.

CN1782166BInactive Publication Date: 2011-08-24BROTHER KOGYO KK
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  • Bearing mechanism and sewing machine
  • Bearing mechanism and sewing machine
  • Bearing mechanism and sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Several embodiments of the present invention are described below with reference to the accompanying drawings. In the embodiments described below, the present invention is applied to a bearing mechanism of a needle bar portion of a stitch forming mechanism in an electronic sewing machine.

[0020] Figure 1 ~ Figure 4 Shows the first embodiment of the present invention. First, refer to figure 1 The overall structure of the sewing machine (electronic sewing machine) 1 in this embodiment will be briefly described. The electronic sewing machine 1 has: a base 2 ; a leg 3 extending upward from the right end of the base 2 ; and an arm 4 extending leftward from the upper end of the leg 3 . The front end portion of the arm portion 4 is a nose portion 5 .

[0021] A loop catcher such as a rotary hook (not shown) is provided on the base portion 2 . A main shaft 6 extending in the left-right direction is provided inside the arm portion 4 . Although not shown, the main shaft 6...

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Abstract

A sewing machine (1) of the invention comprises a bearing mechanism (25) slidably supporting the periphery of a needle bar (11) reciprocating vertically via a needle bar bearing part (12a). The bearing mechanism (25) is provided with a grease storage recess part (12d) filled with grease (G) and formed on the internal surface (12c) of the needle bar bearing part (12a); lubricant trap grooves (12e,12f) formed at both upper / lower sides of the grease storage recess part (12d) formed on the internal surface (12c) of the needle bar bearing part (12a).

Description

(1) Technical field [0001] The present invention relates to a bearing mechanism in which the outer periphery of a sliding shaft is supported by a bearing member and lubricated using a lubricant such as grease, and a sewing machine provided with the bearing mechanism. (2) Background technology [0002] Conventionally, in a mechanism in which a cylindrical sliding bearing member slidably supports the outer periphery of a sliding shaft reciprocating in the axial direction in a mechanical drive system, in order to lubricate the sliding shaft and prevent seizing, etc., the sliding A lubricant such as grease is used between the shaft and the bearing. In particular, in industrial sewing machines and household sewing machines, grease is used as a lubricant used in the needle bar bearings that support the needle bar that moves up and down at high speed. [0003] As a bearing mechanism for such a sewing machine, for example, Japanese Patent Laid-Open No. 2002-45587 is known. In this...

Claims

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Application Information

Patent Timeline
24 Aug 2011
Publication
CN1782166B
IPC
D05B71/00; D05B55/00; F16C33/10
Inventors
若杉幸弘; 宫崎耕太郎