Bearing for sewing machine
A sewing machine and bearing technology, used in sewing machine control devices, sewing machine components, bearing components, etc., can solve the problem of poor durability of semi-circular channel and steel ball design, inconvenient filling of lubricating oil, and insufficient sealing performance of sealing rings, etc. problems, to achieve the effect of saving material and labor costs, saving labor, and reducing friction
Inactive Publication Date: 2019-03-15
慈溪市固德机械有限公司
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Problems solved by technology
[0003] In order to solve the above-mentioned technical problems that the sealing ring of the existing sewing machine bearing sealing ring is not good enough, it is inconvenient to add lubricating oil, and the design durability of the semicircular channel and the steel ball is not good, the present invention provides a sewing machine bearing
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[0024] The present invention will be further described below in conjunction with accompanying drawing.
[0025] Such as Figure 1~8 A bearing for a sewing machine shown includes an outer ring 1, an inner ring 2, a steel ball 3, a cage 4, a rivet 6 for fixing the cage, and a sealing ring 5, and one side of the inner ring 2 is provided with a spindle connection hole, The inner ring 2 protrudes outward on one side of the main shaft connection hole to form a second platform. The side of the second platform is provided with two bolt holes for fixing the main shaft at an angle of 90 degrees, and the other side is provided with a coupling recess. Groove 18, the coupling groove 18 is a uniformly distributed three-claw groove for accommodating the joint of the coupling. The side of the three-claw contact block of the coupling joint is provided with three angles of 60 degrees apart. Bolt holes for fixing bolts to fix the output shaft.
[0026] The side of the outer ring 1 is provided ...
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The invention relates to the technical field of bearings, in particular to a bearing for a sewing machine. The bearing for the sewing machine comprises an outer ring, an inner ring, steel balls, a holding frame and sealing rings. One side of the inner ring is provided with a spindle connecting hole, and the other side of the inner ring is provided with a coupling groove. A channel is arranged in the middle of the outer ring and the inner ring. The channel is provided with double concave surfaces. Four contact points are formed between the channel and the steel balls. Sealing grooves are arranged at the edges of the outer ring and the inner ring. The sealing rings are arranged inside the sealing grooves. The sealing rings seal the gaps between the outer ring and the inner ring. Oil injection ports for filling lubricating oil are arranged in the middle of the sealing rings. The advantages of the bearing for the sewing machine are that the situation that the inner and outer of the bearingare separately sealed is ensured by the sealing rings by setting multiple sealing; the work of filling the lubricating oil can be completed by the oil injection ports without opening the sealing rings when the lubricating oil is needed; and the channel between the outer ring and the inner ring is provided with the double concave surfaces, and grooves for containing the lubricating oil are formedbetween the two concave surfaces and the steel balls, so that the better lubrication effect is obtained.
Description
technical field [0001] The invention relates to the technical field of bearings, in particular to a bearing for a sewing machine. Background technique [0002] Fully automatic sewing machines have been widely used in production, and their good automatic performance has been widely recognized. The components in the fully automatic sewing machines are all striving to be simple and reliable. The selection of bearings also refers to this requirement. There have been couplings and bearings The combined product is used in the production example. This design can improve the overall dynamic balance between the bearing and the connecting shaft, thereby improving the durability of the overall bearing. However, the ordinary sealing ring setting cannot reach the high level required by this design. The tightness will cause external water, grease and foreign matter to penetrate into the bearing, causing the bearing grease to deteriorate and enter impurities, resulting in a greatly reduced...
Claims
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IPC IPC(8): F16C33/66F16C33/78D05B69/30
CPCF16C33/6637D05B69/30F16C33/7806
Inventor 吴永安
Owner 慈溪市固德机械有限公司