Anti-deformation movable iron core press-fitting structure
A moving iron core and anti-deformation technology, applied in the field of solenoid valve parts, can solve problems such as unstable assembly quality, difficult press-fitting, and poor reliability, and achieve the goal of improving product economic benefits, increasing reliability, and increasing reliability Effect
Inactive Publication Date: 2015-09-16
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 an anti-deformation iron core press-fit structure to solve the existing problems of the moving iron core assembly in the existing electromagnetic relay, such as being stuck in the winding assembly, easy to deform, unstable assembly quality, difficult to press-fit, and waste products. The problem of high rate and poor reliability
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[0019] Example: such as Figure 1-2 A new type of electromagnetic valve moving iron core shown includes a moving iron core body 1, the moving iron core body 1 is cylindrical, and an inner hole at one end of the moving iron core body 1 is provided with two rings of annular bosses 11, plastic sealing The outer wall 21 of the component 2 is designed to be a smooth surface, which is convenient for connection with other components. The inner wall of the end of the moving iron core body 1 is designed with a beveled edge chamfer 12, which avoids the distortion caused by the mutual hard extrusion of the moving iron core body 1 and the plastic seal 2. , and at the same time prevent the flashes extruded from the outer wall 21 of the plastic seal 2 from accumulating on the end surface to affect performance. The size of the annular boss 11 and the outer wall 21 of the plastic seal 2 is an interference fit, and the size of the interference fit is 0.25-0.45mm , this design can not only avoi...
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Abstract
The invention discloses an anti-deformation movable iron core press-fitting structure. The anti-deformation movable iron core press-fitting structure comprises a movable iron core body and a plastic sealing piece, wherein a counter bore for mounting the plastic sealing piece is formed in the end part of the movable iron core body; a plurality of annular bosses arranged at intervals are arranged in the counter bore; and a circle of annular beveled chamfers are arranged on the inner wall edge of the end part of the counter bore. According to the anti-deformation movable iron core press-fitting structure, the structure of an original movable iron core with an inward opening is changed into the structure that a plurality of bosses are additionally arranged on the inner opening of one end to generate axial acting force, so that the sealing piece is firmly connected onto the movable iron core, the radial tightening force is prevented from being difficult to control when the opening of the structure is closed, and the problems of deformation generated by too large radial tightening force and falling generated by too small radial tightening force are effectively solved.
Description
technical field [0001] The invention relates to a component of an electromagnetic valve, in particular to a component for an electromagnetic relay, in particular to a pressure-fitting structure of an anti-deformation iron core. Background technique [0002] At present, electromagnetic relays have been widely used in household appliances, automobiles and other industries. With the development of technology, there are more and more types of electromagnetic relays. The most important part in electromagnetic relays—moving core components are indispensable for every electromagnetic relay. Components are components formed by press-fitting plastic seals and moving iron cores during manufacture; the existing moving iron core press-fit structure is generally a structure where the mouth is tightened inward, since the moving iron core and plastic seals are both thin When the wall parts and plastic seals are press-fitted into the moving iron core, the moving iron core will expand due to...
Claims
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Login to View More IPC IPC(8): H01H49/00
CPCH01H49/00
Inventor 李凤春
Owner 贵州新安航空机械有限责任公司