Winding core shaft structure for fixing bobbin
A technology for fixing coils and windings, applied in the field of fixtures, can solve the problem that the winding mandrel cannot fix the coil frame well, and achieves the effects of improving product economic benefits, processing costs and reliability.
Inactive Publication Date: 2015-11-11
贵州新安航空机械有限责任公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a winding mandrel structure for fixing the coil frame in view of the deficiencies in the existing winding mandrel structure, so as to effectively solve the problems caused by the coil frame and the winding mandrel The problem that the winding mandrel cannot fix the coil frame well due to the size change
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[0018] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.
[0019] Such as figure 1 , figure 2 As shown, a winding mandrel structure for fixing a bobbin according to the present invention includes a winding mandrel body 1, and the winding mandrel body 1 is provided with a shaft surface hole 11, and inside the shaft surface hole 11 The spring 2 is placed, and a marble 3 is arranged above the spring 2 in the shaft surface 11 . By installing the spring 2 and the pinball 3, the winding mandrel is not stuck when assembling the coil frame. With this technical solution, the pinball is pressed back by the pressing force generated when the coil frame is loaded into the winding mandrel, and the coil frame is installed. After entering, under the action of spring force, the marble rebounds, so that the coil frame is firmly fixed on the winding mandrel. ...
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Abstract
The invention discloses a winding core shaft structure for fixing a bobbin. The winding core shaft structure comprises a winding core shaft body, wherein an axial surface hole is formed in the winding core shaft body; a spring is arranged in the axial surface hole; a ball is arranged on the upper part of the spring in the axial surface hole; the axial surface hole is a smooth surface straight hole; the opening part of the axial surface hole is in an upsetting and narrowing structure; the spring is in an ordinary cylindrical structure; and the ball is in a spherical smooth structure. According to the winding core shaft structure, the axial surface structure of the original winding core shaft for assembly is improved into that the spring and the ball are arranged in the axial surface hole; the ball is pressed back through the press-in force generated when the bobbin is arranged on the winding core shaft; the ball rebounds under the action of spring force after the bobbin is arranged; and the bobbin is firmly fixed on the winding core shaft. The problem that the winding core shaft is difficult to assemble due to the fact that the fit dimension of the winding core in the original structure is not easy to control is solved, so that the processing cost is reduced, and the reliability is good.
Description
technical field [0001] The invention belongs to the technical field of tooling fixtures, and relates to a tooling fixture used in the processing of electromagnetic valve parts, in particular to a winding mandrel structure for fixing a coil frame. Background technique [0002] At present, electromagnetic relays have been widely used in household appliances, automobiles, etc. With the development of technology, there are more and more types of them. The most important part in it - the coil assembly is an indispensable part of every electromagnetic relay, forming The process of the coil assembly is to fix the coil frame on the winding mandrel, and wind the enameled wire on the coil frame to form the assembly. The smooth surface structure of the fixed coil frame, because the coil frame is a plastic part or a plastic thin-walled part, the size changes greatly. After winding, the deformation is large. After winding, it is difficult to take out the coil frame from the winding mand...
Claims
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IPC IPC(8): H01F41/06
Inventor 李凤春
Owner 贵州新安航空机械有限责任公司