阅读说明：本技术 程控步进衰减器的电磁驱动机构 (Electromagnetic driving mechanism of program-controlled step attenuator ) 是由 操基德 王金龙 杨倩 孙绍强 于 2019-11-26 设计创作，主要内容包括：程控步进衰减器的电磁驱动机构，包括基座、盖板，基座下侧和前侧敞口，盖板与基座配合贴于基座的下侧，基座内设有容纳部，每个容纳部上侧设有第一定位孔，盖板对应每个第一定位孔均设有第二定位孔，每个容纳部内设有线圈骨架，线圈骨架竖直布置，线圈绕置在线圈骨架外侧，线圈骨架内侧设有铁芯，线圈骨架上侧、下侧设有定位圈，两个定位圈分别与第一定位孔和第二定位孔配合，铁芯两端超出第一定位孔、第二定位孔，铁芯上侧、下侧分别安装有衔铁，每个容纳部的后方对应设有轭铁，轭铁大体呈C形，轭铁竖直部前侧贴有磁钢，轭铁上侧的第一水平部与第一衔铁相正对，轭铁下侧的第二水平部与第二衔铁相正对。本机构集成度高、定位精度高、体积小。(The electromagnetic driving mechanism of the program-controlled step attenuator comprises a base and a cover plate, wherein the lower side and the front side of the base are open, the cover plate is matched with the base and attached to the lower side of the base, accommodating parts are arranged in the base, a first positioning hole is formed in the upper side of each accommodating part, a second positioning hole is formed in the cover plate corresponding to each first positioning hole, a coil framework is arranged in each accommodating part, the coil frameworks are vertically arranged, a coil is wound on the outer side of each coil framework, an iron core is arranged on the inner side of each coil framework, positioning rings are arranged on the upper side and the lower side of each coil framework and respectively matched with the first positioning hole and the second positioning hole, the two ends of each iron core exceed the first positioning hole and the second positioning hole, armatures are respectively arranged on the upper side and the lower side of the iron core, a yoke is correspondingly arranged at the rear side of each accommodating part, the yoke is substantially C-, the second horizontal part at the lower side of the yoke is opposite to the second armature. The mechanism has high integration level, high positioning precision and small volume.)

1. The electromagnetic driving mechanism of the program-controlled step attenuator is characterized in that: the coil comprises a base, a cover plate, a coil framework, a coil, an iron core, a first armature, a second armature, a yoke and magnetic steel, wherein the base is horizontally arranged, the length direction of the base is in the left-right direction, the lower side and the front side of the base are open, the cover plate is horizontally arranged and is attached to the lower side of the base in a matched manner, a plurality of accommodating parts which are arranged at intervals from left to right are arranged in the base, a first positioning hole which penetrates through the upper side of the base is arranged at each accommodating part at the position at the upper side of the base, the axes of all the first positioning holes share a vertical surface with the left-right direction, a second positioning hole which penetrates through the cover plate is arranged at each first positioning hole at the position of the cover plate, a coil framework is arranged in each accommodating part of the base, the coil framework is vertically arranged, the coil is wound at the outer side of the coil framework, through holes for installing the iron, the positioning rings are coaxially arranged with the through holes, the sizes of the positioning rings are respectively matched with the first positioning hole and the second positioning hole, two positioning rings of each coil framework are respectively matched with the first positioning hole and the second positioning hole, an iron core penetrates through the through holes of each coil framework, two ends of the iron core in the length direction correspondingly exceed the first positioning hole and the second positioning hole, a first armature is arranged on the upper side of the iron core, a second armature is arranged on the lower side of the iron core, the first armature and the second armature are both in a horizontally arranged disc shape, a yoke is correspondingly arranged behind each accommodating part of the base, the yoke is generally in a C shape and comprises a vertical part, a first horizontal part extending forwards is arranged on the upper side of the vertical part, a second horizontal part extending forwards is arranged on the lower side of the vertical part, the first horizontal part is positioned above the corresponding first armature and is opposite to the first armature, the second horizontal part is positioned below the corresponding second armature and is opposite to the second armature, the magnetic steel is vertically arranged and attached to the front side of the vertical part, and the polarities of the front side and the rear side of the magnetic steel are opposite.

2. The electromagnetic drive mechanism of a programmable step attenuator of claim 1, characterized by: the upper portion of coil skeleton, the lower part be equipped with respectively and be used for preventing the limiting plate of coil axial float, the limiting plate be square, and the size matches with the portion of holding.

3. The electromagnetic drive mechanism of a programmable step attenuator of claim 1, characterized by: each coil framework is wound by double coils.

Technical Field

The invention relates to an electromagnetic driving mechanism of a program-controlled step attenuator.

Background

The electromagnetic driving mechanism of the program-controlled step attenuator generally comprises a permanent magnet, a magnetic conduction cavity, an electromagnetic coil and the like, and is a key component for realizing the program control and the step function of the program-controlled step attenuator. After receiving the driving level, the microwave signal can be changed from a direct-through (attenuation) state to an attenuation (direct-through) state by acting to push the edge line to deform immediately. When the driving level disappears, the current state can still be maintained by means of the permanent magnetic force. The precision and reliability of the drive mechanism directly determine the repeatability and reliability of the programmable step attenuator. A common electromagnetic driving mechanism adopts a single-pole driving mechanism, and a program-controlled step attenuator product needs to be provided with a plurality of single-pole driving mechanisms, so that the program-controlled and step functions are realized. The installation and positioning precision among the driving mechanisms is low, so that the deformation of the pushing edge line is difficult to control, and the attenuation precision and the repeatability of the product are poor and the reliability is poor; meanwhile, the internal structure and the fixed position are complex, and the product volume is large.

Disclosure of Invention

The invention aims to solve the technical problem of providing an electromagnetic driving mechanism of a program-controlled step attenuator, which adopts an integrated multi-pole electromagnetic driving mechanism and has high integration level, high positioning precision and small volume.

The invention provides an electromagnetic driving mechanism of a program-controlled step attenuator, which comprises a base, a cover plate, a coil framework, a coil, an iron core, a first armature, a second armature, a yoke and magnetic steel, wherein the base is horizontally arranged, the length direction of the base is in a left-right direction, the lower side and the front side of the base are open, the cover plate is horizontally arranged and matched with the base to be attached to the lower side of the base, a plurality of accommodating parts which are arranged at intervals left and right are arranged in the base, a first positioning hole penetrating through the upper side of the base is arranged at the position on the upper side of the base corresponding to each accommodating part, the axes of all the first positioning holes share a vertical surface in the left-right direction, a second positioning hole penetrating through the cover plate is arranged at the position of the cover plate corresponding to each first positioning hole, the coil framework is arranged in each accommodating part of the base, the coil framework is vertically arranged, the coil is wound on the, the upper side and the lower side of the through hole of the coil framework are respectively provided with an outward-protruding locating ring, the locating rings and the through hole are coaxially arranged, the size of each locating ring is respectively matched with the first locating hole and the second locating hole, two locating rings of each coil framework are respectively matched with the first locating hole and the second locating hole, an iron core is arranged in the through hole of each coil framework in a penetrating way, two ends of the iron core in the length direction correspondingly exceed the first locating hole and the second locating hole, a first armature is arranged on the upper side of the iron core, a second armature is arranged on the lower side of the iron core, the first armature and the second armature are both in a horizontally arranged disc shape, a yoke is correspondingly arranged at the rear part of each accommodating part of the base, the yoke is generally in a C shape and comprises a vertical part, a first horizontal part extending forwards is arranged on the upper side of the vertical part, a second horizontal part extending forwards is arranged on the lower side of the vertical part, the first horizontal part is positioned, the second horizontal part is located below the corresponding second armature and is opposite to the second armature, the magnetic steel is vertically arranged and attached to the front side of the vertical part, and the polarities of the front side and the rear side of the magnetic steel are opposite.

For the sake of simplicity, the electromagnetic driving mechanism of the programmable step attenuator of the present invention is simply referred to as the present mechanism hereinafter.

The advantages of the mechanism are that: the mechanism adopts an integrated base and is formed by one-step processing. The positioning ring of the coil framework of each pole is matched with the first positioning hole to be positioned in the assembling process, then the cover plate is closed and matched with the second positioning hole to be positioned, and finally the iron core penetrates through the coil framework and is connected with the armature, so that the iron core, the yoke and the armature form a closed magnetic circuit.

In order to achieve better use effect of the mechanism, the preferable scheme is as follows:

preferably, the upper part and the lower part of the coil framework are respectively provided with a limiting plate for preventing the coil from axially moving, and the limiting plate is square and matched with the accommodating part in size.

The square limiting plate of coil skeleton is as blocking the structure, and it is spacing with the cooperation of base portion of holding, and the effectual coil skeleton of having eliminated is around the pivoted possibility of iron core axle center, has guaranteed that the coil can not lead to the wire fracture because of coil skeleton rotates in the mechanical environment of higher magnitude.

Preferably, each coil framework is wound by double coils.

Each coil framework is wound by adopting double coils to form a bistable magnetic circuit structure, and the integration level is high.

Drawings

Fig. 1 is a perspective view of the present mechanism.

Fig. 2 is a front view of the mechanism.

Fig. 3 is an exploded view of the present mechanism (the terminal and yoke are not shown).

Detailed Description

Referring to fig. 1-3, the electromagnetic driving mechanism of the program-controlled step attenuator comprises a base 1, a cover plate 2, a coil frame 3, a coil 4, an iron core 5, a first armature 62, a second armature 61, a yoke 7, and magnetic steel 8, wherein the base 1 is horizontally arranged and has a left-right direction of length, the lower side and the front side of the base 1 are open, the cover plate 2 is horizontally arranged and is matched with the base 1 to be attached to the lower side of the base 1, a plurality of accommodating parts are arranged in the base 1 at left-right intervals, a first positioning hole 11 penetrating through the upper side of the base 1 is arranged at the position on the upper side of the base 1 corresponding to each accommodating part, the axes of all the first positioning holes 11 share a left-right vertical surface, a second positioning hole 21 penetrating through the cover plate 2 is arranged at the position on the cover plate 2 corresponding to each first positioning hole 11, the coil frame 3 is vertically arranged, and each coil frame 3 is wound with a double, the upper part and the lower part of the coil framework 3 are respectively provided with a limiting plate 31 for preventing the coil 4 from axially moving, the limiting plate 31 is square and matched with the accommodating part in size, the inner side of the coil framework 3 is provided with a through hole for installing the iron core 5, the upper side and the lower side of the through hole of the coil framework 3 are respectively provided with a convex locating ring 32, the locating rings 32 and the through holes are coaxially arranged, the size of the locating ring 32 is respectively matched with the first locating hole 11 and the second locating hole 21, each accommodating part in the base 1 is internally provided with one coil framework 3, two locating rings 32 of each coil framework 3 are respectively matched with the first locating hole 11 and the second locating hole 21, the iron core 5 penetrates through the through hole of each coil framework 3, the two ends of the iron core 5 in the length direction correspondingly exceed the first locating hole 11 and the second locating hole 21, the first armature 62 is installed on the upper side of the iron, the second armature 61 is installed on the lower side of the iron core 5, the first armature 62 and the second armature 61 are both in a horizontally arranged disc shape, a yoke 7 is correspondingly arranged behind each accommodating part of the base 1, the yoke 7 is generally in a C shape, the yoke 7 comprises a vertical part 71, a first horizontal part 72 extending forwards is arranged on the upper side of the vertical part 71, a second horizontal part 73 extending forwards is arranged on the lower side of the vertical part 71, the first horizontal part 72 is located above the corresponding first armature 62 and is opposite to the first armature 62, the second horizontal part 73 is located below the corresponding second armature 61 and is opposite to the second armature 61, the magnetic steel 8 is vertically arranged and attached to the front side of the vertical part 71, and the polarities of the front side and the rear side of the magnetic steel 8 are opposite.

The advantages of the mechanism are that: the mechanism adopts an integrated base 1 and is formed by one-step processing. The utility model discloses a three-pole magnetic core iron core, including the first locating hole 11, the second locating hole 21, the third locating hole 11, the third locating hole, the fourth locating hole 11, cover plate 2, last 3 looks junctional armature of coil skeleton are passed with iron core 5, make iron core 5 and yoke 7, armature form closed magnetic circuit, this mechanism has improved the installation accuracy between every utmost point greatly, compact structure, occupation space is little, simple structure simultaneously, high assembly efficiency, avoid installing respectively the location between the multipolar, high reliability.

The square limiting plate 31 of the coil skeleton 3 is used as a blocking structure, and is limited by being matched with the accommodating part of the base 1, so that the possibility that the coil skeleton 3 rotates around the axis of the iron core 5 is effectively eliminated, and the coil 4 is ensured not to be broken because the coil skeleton 3 rotates in a high-order mechanical environment.

Each coil framework 3 is wound by adopting a double coil 4 to form a bistable magnetic circuit structure, and the integration level is high.