CN219329379U

CN219329379U - Mutual suction prevention riveting type circulator

Info

Publication number: CN219329379U
Application number: CN202320165553.7U
Authority: CN
Inventors: 王华伟; 奉林晚; 刘源; 冉扬洲; 尹久红
Original assignee: CETC 9 Research Institute
Current assignee: CETC 9 Research Institute
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-11
Anticipated expiration: 2033-02-09

Abstract

The utility model discloses a mutual suction preventing riveting type circulator, belonging to the technical field of magnetic components; according to the utility model, two small-size permanent magnets are used to replace the original one large-size permanent magnet, so that the problem of mutual attraction of devices due to a relatively close mounting distance is solved, and the layout of the devices on a circuit board is not restricted; the mutual suction prevention riveting type circulator is used, so that the layout of components on a circuit board can be denser, miniaturization is facilitated, and meanwhile, the cost is reduced.

Description

Mutual suction prevention riveting type circulator

Technical Field

The utility model relates to the technical field of magnetic components, in particular to an anti-mutual suction riveting circulator.

Background

With the development of 5G communication, miniaturization trend is becoming more and more evident, which requires not only smaller and smaller size of devices, but also denser layout of various components on a circuit board.

The riveting type circulator is a type of magnetic device commonly used at present. The structure shown in fig. 1 is generally adopted by the prior riveting type circulator, and comprises a cavity 1, a contact pin medium sleeve component 2, a strontium constant magnet 3, two grounding plates 4, two gyromagnetic substrates 5, a central conductor 6, a permanent magnet 7, one or more compensation sheets 8 and a cover plate 9.

As previously described, circulators generally employ two magnets of strontium permanent magnet for providing an adjustable magnetic field and permanent magnet for providing a constant magnetic field. The strontium permanent magnet and the permanent magnet with the same size have stronger magnetic field, and the higher the device frequency is, the thicker the used permanent magnet is.

Because the wall thickness of the cavity of the riveting type circulator is thinner, the magnetic leakage is more serious, and especially when the installation distance of two or more riveting type circulators is shorter, the static magnetic field between devices is increased, and the phenomenon of mutual attraction is generated. When a plurality of circulators are stuck and welded, the devices are mutually absorbed before unreasonable welding; even manual soldering on a circuit board, mutual attraction can affect the performance of the device. Namely, for magnetic devices such as rivet-press circulators, the layout is relatively close to generate a magnetic field mutual attraction effect, so that the reduction of the magnetic attraction effect between circulators is a problem which needs to be solved currently.

In order to meet the use requirement, the conventional riveting type circulator has to be arranged far, so that the size of a circuit board is increased, and the miniaturization requirement cannot be met, so that the riveting type circulator is required to be more suitable for future development.

Disclosure of Invention

The utility model aims to provide an anti-mutual suction riveting type circulator so as to solve the problems.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a prevent each other inhaling riveting formula circulator, includes cavity, contact pin medium cover subassembly, permanent magnet, two ground plates, two gyromagnetic substrates, a center conductor, a strontium permanent magnetism, two compensation pieces and a apron, the permanent magnet is two, is first permanent magnet and second permanent magnet respectively, wherein, first permanent magnet is located contact pin medium cover subassembly, the second permanent magnet is located the strontium permanent magnetism under.

The inventors found through a great deal of research that: the phenomenon of mutual attraction occurs largely because the permanent magnets are too thick, resulting in too strong a static magnetic field between the devices. In the embodiment, two permanent magnets and one strontium permanent magnet are used, and the design method that the traditional circulator only uses one permanent magnet and one strontium permanent magnet is broken through. The original permanent magnet is divided into two permanent magnets, so that the phenomenon that the magnetic field of a single permanent magnet is too strong and the magnetic leakage is more is effectively avoided.

The utility model adopts two permanent magnets and a strontium permanent magnet, and the two permanent magnet sheets are as thin as possible under the condition of meeting the requirement of providing a magnetic field, and the thickness and the diameter of the two permanent magnets can be the same or different.

As a preferable technical scheme: the thickness of the first permanent magnet is larger than the thickness of the sleeve ring of the contact pin medium sleeve component. Namely, the first permanent magnet is embedded into the lantern ring of the contact pin medium sleeve assembly, and the thickness of the first permanent magnet is about 0.1mm thicker than the lantern ring of the contact pin medium sleeve assembly, so that most of the permanent magnet is wrapped by the contact pin medium sleeve assembly, and the contact between the permanent magnet and the upper and lower parts is ensured by about 0.1mm thick.

As a preferable technical scheme: the thickness of the second permanent magnet is smaller than that of the first permanent magnet.

As a preferable technical scheme: the second permanent magnet is closely attached to the strontium constant magnet. The second permanent magnet is closely adjacent to the strontium permanent magnet, and other parts are not placed in the middle, so that the magnetic field is more concentrated, and the thickness of the magnet is effectively reduced.

Compared with the prior art, the utility model has the advantages that: according to the utility model, two small-size permanent magnets are used to replace the original one large-size permanent magnet, so that the problem of mutual attraction of devices due to a relatively close mounting distance is solved, and the layout of the devices on a circuit board is not restricted; the mutual suction prevention riveting type circulator is used, so that the layout of components on a circuit board can be denser, miniaturization is facilitated, and meanwhile, the cost is reduced.

Drawings

FIG. 1 is an exploded view of a prior art rivet circulator;

fig. 2 is an exploded view of a rivet circulator according to an embodiment of the present utility model.

In the figure: 1. a cavity; 2. a pin media sleeve assembly; 3. constant magnetic property of strontium; 4. a ground plate; 5. gyromagnetic substrates; 6. a center conductor; 7. a permanent magnet A; 8. a compensation sheet; 9. a cover plate; 10. a first permanent magnet; 11. and a second permanent magnet.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

Example 1

As shown in figure 2, the frequency of the mutual suction-prevention riveting type circulator is 3400 MHz-3600 MHz, and the external dimension of the cavity is phi 7mm. The circulator in the embodiment comprises a cavity 1, wherein the wall thickness of the cavity is 0.5mm, a pin medium sleeve component 2, two permanent magnets (a first permanent magnet 10 and a second permanent magnet 11 respectively), two grounding plates 4, two gyromagnetic substrates 5, a central conductor 6, a strontium permanent magnet 3, two compensation sheets 8 and a cover plate 9, the arrangement sequence of the two compensation sheets is as shown in fig. 2, the first permanent magnet 10 is positioned in the pin medium sleeve component 2, and the other permanent magnet 11 is positioned between the strontium permanent magnet 3 and one of the grounding plates 4;

in the embodiment, the diameter of the first permanent magnet 10 positioned in the contact pin medium sleeve component 2 is 5mm, the thickness is 0.8mm, the diameter of the sleeve ring of the contact pin medium sleeve component 2 is 5mm, the thickness is 0.7mm, and the contact pin medium sleeve component 2 can well wrap the first permanent magnet 10, so that the outward leakage of a magnetic field is effectively avoided;

the diameter of the second permanent magnet 11 is 6mm, the thickness of the second permanent magnet 11 is 0.6mm, and the mutual attraction phenomenon is the largest in correlation with the magnet, because the first permanent magnet 10 positioned in the pin medium sleeve assembly 2 provides a stronger magnetic field, the thickness of the second permanent magnet 11 can be greatly reduced, and therefore, the magnetic leakage is also less;

the strontium permanent magnet 3 used in this embodiment has the same diameter as the second permanent magnet 11, and the strontium permanent magnet 3 is located directly above the second permanent magnet 11.

According to actual measurement, the distance between the centers of the two devices in the original scheme shown in fig. 1 is 14mm, namely the distance between the devices is 7mm, so that the phenomenon of mutual suction can be avoided; in this embodiment, the distance between the centers of the two devices is 9mm, that is, the distance between the devices is 2mm, so that the influence of static magnetic force between the devices can be avoided.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a prevent each other inhaling riveting formula circulator, includes cavity (1), contact pin medium cover subassembly (2), permanent magnet, two ground plates (4), two gyromagnetic substrate (5), a center conductor (6), a strontium permanent magnetism (3), two compensation piece (8) and a apron (9), its characterized in that: the number of the permanent magnets is two, namely a first permanent magnet (10) and a second permanent magnet (11), wherein the first permanent magnet (10) is positioned in the contact pin medium sleeve assembly (2), and the second permanent magnet (11) is positioned under the strontium permanent magnet (3).

2. The mutual suction riveting prevention circulator according to claim 1, wherein: the thickness of the first permanent magnet (10) is larger than the thickness of the sleeve ring of the contact pin medium sleeve component (2).

3. The mutual suction riveting prevention circulator according to claim 1, wherein: the thickness of the second permanent magnet (11) is smaller than that of the first permanent magnet (10).

4. The mutual suction riveting prevention circulator according to claim 1, wherein: the second permanent magnet (11) is closely attached to the strontium permanent magnet (3).