Bearing arrangement of sewing machine
A support structure, sewing machine technology, applied in sewing machine components, linear motion bearings, rotary motion bearings, etc., can solve problems such as decreased lubrication performance, wear and sintering of rotating shafts and bearing components
Inactive Publication Date: 2011-08-24
BROTHER KOGYO KK
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- Abstract
- Description
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- Application Information
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Problems solved by technology
The thread ends and cloth scraps that enter enter into the grease container between the rotating shaft and the bearing member, which reduces the lubricating performance and may cause wear and sintering of the rotating shaft and bearing member
Method used
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[0029] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0030] Such as figure 1 As shown, the sewing machine 1 includes: a base plate 2 with a rotary hook; a column 3 erected on the right end of the base plate 2; and a casing 4 extending from the upper end of the column 3 to the left. A hook shaft (not shown) that rotates synchronously with the main shaft 6 to drive the hook to rotate is arranged on the lower portion of the base plate 2 .
[0031] Such as figure 2 As shown, the cylindrical first bearing member 16 fixed to the machine frame F of the sewing machine 1 supports the main shaft 6 so as to be rotatable around the axis. The main shaft 6 is arranged inside the casing 4 along the left-right direction. The left end of the main shaft 6 protrudes into the head 5 of the casing 4, and this protruding end is connected with the needle bar up and down movement mechanism 9 that makes the needle ba...
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An axle supporting structure of the sewing machine, a lubricating grease accepting part for accepting lubricating grease for lubricating is provided between the rotation axle rotating around the axle center or the sliding axle sliding along the axle length direction and each bearing components, a ring-shaped rubbish collecting slot is formed on the outer circumference of the sliding axle or the rotation axle of the supporting part offsetting the bearing component in the axle length direction, the inner surface of the ring-shaped rubbish collecting slot is coated with toughness agent, and the outside of the rubbish collecting slot is covered by the cylinder-shaped protection component fixed on the end of the bearing component. The thread ends, cloth chips and so on rubbish which enter between the rotation axle or the sliding axle and the protection components are pasted on or catched by the toughness agent in the rubbish collecting slot, thereby preventing rubbish entering into the lubricating grease accepting part provided between the rotation axle or the sliding axle and the bearing components, provided is an axle supporting structure of the sewing machine for ensuring quality ofthe lubricating grease in the lubricating grease accepting part for lubricating and maintaining good lubrification for a long time.
Description
technical field [0001] The present invention relates to a shaft support structure of a sewing machine that supports a rotating shaft that rotates around the shaft center or a sliding shaft that reciprocates along the shaft length through a bearing member using grease. Background technique [0002] In a general mechanical drive system, when a rotating shaft that rotates around its axis is rotatably supported by a bearing member, or when a sliding shaft that reciprocates along the shaft length is slidably supported by a bearing member, the Or the lubricant is supplied between the slide shaft and the bearing member. Thereby, the rotating shaft or the sliding shaft rotates or slides smoothly, and the sticking of the rotating shaft or the sliding shaft and the bearing member is prevented. In industrial sewing machines or household sewing machines, in order to promote oil-free lubrication without using lubricating oil, between the main shaft (rotary shaft) and the bearing member ...
Claims
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IPC IPC(8): D05B71/00F16C33/10F16C17/02F16C29/02
Inventor 和田哲也川岛义人柴田到桑原幸治
Owner BROTHER KOGYO KK