Isolator

Abstract

The utility model provides an isolator, and relates to the technical field of communication. The isolator comprises a shell and a signal main body part, wherein the shell comprises a plurality of magnetic conductive layer frame bodies and a first heat conduction layer frame body; the plurality of magnetic conduction layer frame bodies are mutually sleeved and are sleeved outside the first heat conduction layer frame body to form a shell with openings in two sides; every two adjacent magnetic conductive layer frame bodies are arranged at an interval; mounting openings are formed in the first side edges of the magnetic conduction layer frame bodies and the first heat conduction layer frame bodies; the signal main body part is embedded in the first heat conduction layer frame body, the outer side wall of the signal main body part is attached to the inner side wall of the first heat conduction layer frame body, the signal main body part is provided with three ports, two first ports are in one-to-one correspondence with the two sides of the opening of the shell respectively, and two second ports are in one-to-one correspondence with the two sides of the opening of the shell respectively. And the other second ports are arranged in one-to-one correspondence with the mounting ports. According to the embodiment of the invention, the electrostatic shielding effect can be better improved, and the size is smaller.

Description

Technical Field

[0001] The embodiments of the present application relate to, but are not limited to, the field of communication technology, and in particular to an isolator. Background Art

[0002] In the field of communication technology, isolators and circulators can be collectively referred to as "isolators" to isolate signals and prevent reverse signal transmission, thereby protecting equipment from interference and damage. Taking isolators and circulators as an example, in the prior art, since the signal body of the isolator contains a permanent magnet, an electrostatic magnetic field will be generated around the signal body. Therefore, the isolator often needs to be magnetically shielded. However, in the prior art, a closed shell is often provided to encapsulate the entire isolator. This method will result in a larger isolator after electrostatic shielding. Therefore, there is an urgent need for an isolator that is small in size and can achieve electrostatic shielding. Utility Model Content

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims. Embodiments of the present application provide an isolator that can achieve electrostatic shielding while reducing size.

[0004] The isolator proposed in an embodiment of the present application includes:

[0005] The housing comprises a plurality of magnetic conductive layer frames and a first thermal conductive layer frame; the plurality of magnetic conductive layer frames are mutually sleeved and sleeved on the outside of the first thermal conductive layer frame to form a housing with openings on both sides; two adjacent magnetic conductive layer frames are spaced apart; and a mounting opening is provided on the first side of each magnetic conductive layer frame and the first thermal conductive layer frame;

[0006] The signal main body is embedded in the first heat-conducting layer frame and the outer wall of the signal main body is fitted with the inner wall of the first heat-conducting layer frame. The signal main body is provided with three ports, two of which are respectively provided in one-to-one correspondence with the two sides of the shell opening, and the other second port is provided in one-to-one correspondence with the installation port.

[0007] Therefore, the above-mentioned embodiments of the present application have at least the following beneficial effects: by providing mounting openings on the first side edges of each magnetic conductive layer frame and the first thermal conductive layer frame, the first thermal conductive layer frame is fitted with the signal main body, so that the signal main body, the magnetic conductive layer frame, and the first thermal conductive layer frame can be integrally formed. At this time, wiring terminals can be installed at the mounting openings and the openings on both sides of the shell to realize signal input or output. The magnetic lines of force generated by the signal main body will be transmitted along the inner wall of the shell. Since the magnetic conductive layer frame is divided into multiple layers and spaced apart, the thickness of the shell can be reduced while ensuring the electrostatic shielding effect. Moreover, by directly fitting the first thermal conductive layer frame with the signal main body, the overall volume of the isolator can be reduced while improving the heat dissipation effect. Therefore, the embodiments of the present application can improve the electrostatic shielding effect better and have a smaller volume.

[0008] According to some embodiments of the present application, the first thermal conductive layer frame includes a first side plate and a first thermal conductive layer main body, one end of the first thermal conductive layer main body abuts against two ends of the first side plate, and each of the magnetic conductive layer frames includes a first magnetic conductive layer sub-frame, a second magnetic conductive layer sub-frame and a fitting part, and the second side edges of the first magnetic conductive layer sub-frame and the second magnetic conductive layer sub-frame are fitted into each other through the corresponding fitting parts; the first side edge of the first magnetic conductive layer sub-frame is provided with the mounting port.

[0009] According to some embodiments of the present application, the length of the second side of the first magnetic conductive layer sub-frame of the same magnetic conductive layer frame is different from the length of the second side of the second magnetic conductive layer sub-frame, and the length of the second side of the first magnetic conductive layer sub-frame of different magnetic conductive layer frames is different.

[0010] According to some embodiments of the present application, the shell further includes a second heat-conducting layer frame, and the second heat-conducting layer frame is arranged between each adjacent two magnetic conductive layer frames, and the second heat-conducting layer frame is provided with the mounting opening on a side close to the first side of each magnetic conductive layer frame.

[0011] According to some embodiments of the present application, the multiple magnetic conductive layer frames include a first magnetic conductive layer frame and a second magnetic conductive layer frame, the first magnetic conductive layer frame is the outermost frame of the shell, the second magnetic conductive layer frame is embedded in the first magnetic conductive layer frame, the engaging portion on the second magnetic conductive layer frame includes a protrusion and a groove, the area of ​​the first end of the protrusion is larger than the area of ​​the second end of the protrusion, the first end is arranged close to the groove, and the second end is arranged away from the groove; the engaging portion on the first magnetic conductive layer frame is arranged as a screw hole.

[0012] According to some embodiments of the present application, the second heat-conducting layer frame includes a second side plate and a second heat-conducting layer main body, and one end of the second heat-conducting layer main body abuts against two ends of the corresponding second side plate.

[0013] According to some embodiments of the present application, the first heat-conducting layer frame and the second heat-conducting layer frame are both configured as aluminum alloy frames.

[0014] According to some embodiments of the present application, a ratio between the thickness of the first thermal conductive layer frame and the thickness of the magnetic conductive layer frame is set to 3:2.

[0015] According to some embodiments of the present application, the magnetic conductive layer is provided with three layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0017] Figure 1 1 is a schematic structural diagram of an embodiment of an isolator provided by the present application;

[0018] Figure 2 yes Figure 1 A schematic cross-sectional view of the embodiment shown;

[0019] Figure 3 yes Figure 2 An enlarged schematic diagram of the local A is shown;

[0020] Figure 4 It is a schematic diagram of an exploded view of the shell of an embodiment of the isolator provided in this application.

[0021] Reference numerals:

[0022] Housing 100, magnetic conductive layer frame 110, first magnetic conductive layer sub-frame 111, second magnetic conductive layer sub-frame 112, first thermal conductive layer frame 120, first side plate 121, first thermal conductive layer main body 122, protrusion 131, groove 132, screw hole 133, second thermal conductive layer frame 140, second side plate 141, second thermal conductive layer main body 142, mounting port 150,

[0023] Signal main part 200,

[0024] Connection terminal 300 and mounting end surface 310 . DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present application. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application. The terms "first", "second", "third", "fourth" etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order.

[0027] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present disclosure.

[0028] It can be understood that the isolator described below can be a specific isolator product or a circulator product.

[0029] It's understood that a magnetically conductive layer is a component made of magnetically conductive or ferromagnetic materials. It limits the propagation of electromagnetic waves by reflecting and absorbing them, thereby protecting equipment or areas from external electromagnetic interference or the spread of internal electromagnetic waves. The key to shielding electromagnetic waves lies in the shielding capability of the magnetic material, which includes shielding against electric and magnetic waves, as well as plane waves. At high frequencies, eddy currents in metallic magnetically conductive materials can offset external electromagnetic waves, while at low frequencies, high-permeability materials are used to limit the spread of magnetic field lines. Because electromagnetic waves in different frequency bands have different characteristics, the design of the shield must be optimized for the specific application to ensure good electrical continuity and the inability to directly penetrate the conductor. Traditionally, magnetic shielding is achieved by enclosing the product in a closed magnetic shielding cover. In this case, the shielding cover and the product are two separate components. This increases the space and weight requirements of the product. Furthermore, since the shielding cover and the product are separate, there is no direct connection between them, and air is typically used as the transmission medium between the shielding cover and the product, which significantly affects the heat dissipation of the isolator. Furthermore, the side walls of conventional magnetic shielding covers are usually configured as a single layer. Therefore, in order to achieve a better shielding effect, the thickness of the shielding cover is often large, which results in a heavy product weight and thus makes it impossible to achieve miniaturization and lightweighting.

[0030] Reference Figures 1 to 4 As shown, the isolator proposed according to the embodiment of the present application includes:

[0031] The housing 100 includes a plurality of magnetically conductive layer frames 110 and a first thermally conductive layer frame 120. The plurality of magnetically conductive layer frames 110 are nested with each other and with the first thermally conductive layer frame 120 to form a housing 100 with openings on both sides. A mounting opening 150 is formed on the first side of each magnetically conductive layer frame 110 and the first thermally conductive layer frame 120. Adjacent magnetically conductive layer frames 110 are spaced apart.

[0032] The signal main body 200 is embedded in the first heat-conducting layer frame 120 and the outer wall of the signal main body 200 is fitted with the inner wall of the first heat-conducting layer frame 120. The signal main body 200 is provided with three ports, of which the two first ports are respectively provided in one-to-one correspondence with the two sides of the opening of the shell 100, and the other second port is provided in one-to-one correspondence with the installation port 150.

[0033] Therefore, by providing mounting openings 150 on the first side edges of each magnetic conductive layer frame 110 and the first thermal conductive layer frame 120, the first thermal conductive layer frame 120 is fitted with the signal main body 200, so that the signal main body 200, the magnetic conductive layer frame 110, and the first thermal conductive layer frame 120 can be integrally formed. In this case, terminal blocks 300 can be installed at the mounting openings 150 and at the openings on both sides of the housing 100 to enable signal input or output. The magnetic lines of force generated by the signal main body 200 will be transmitted along the inner side wall of the housing 100. Since the magnetic conductive layer frame 110 is divided into multiple layers and spaced apart, the thickness of the housing 100 can be reduced while ensuring the electrostatic shielding effect. Moreover, by directly fitting the first thermal conductive layer frame 120 to the signal main body 200, the heat dissipation effect can be improved while reducing the overall volume of the isolator. Therefore, the embodiments of the present application can achieve better electrostatic shielding effect and smaller volume while meeting the heat dissipation requirements of the isolator.

[0034] An isolation layer or air gap may be provided between two adjacent magnetic conductive layer frames 110 to shield mutual interference between the magnetic conductive layer frames 110 . In this regard, the embodiment of the present application does not limit how to shield between two adjacent magnetic conductive layer frames 110 .

[0035] It is understood that when the thickness of the magnetically conductive layer frame 110 reaches a certain value, the thickness has little effect on reducing magnetic flux. Therefore, a multi-layer arrangement can achieve a better electrostatic shielding effect by using multiple magnetically conductive layer frames 110 nested within a housing 100 of the same thickness. Therefore, using multiple magnetically conductive layer frames 110 for shielding can further reduce the volume of the entire housing 100. The combination of the first thermally conductive layer and the installation opening 150 further reduces the gap between the signal main body 200 and the housing 100, thereby reducing the volume.

[0036] The signal main body 200 is a part that realizes the isolator function. The embodiment of the present application does not limit the specific shape and structure of the signal main body 200.

[0037] The mounting openings 150 on the first side of each magnetic conductive layer frame 110 and the first thermal conductive layer frame 120 match the mounting end surface 310 of the terminal block 300 mounted on the second port, so that after the terminal block 300 is installed, the remaining gap at each mounting opening 150 is small, which satisfies the electrostatic shielding effect while ensuring that the volume is as small as possible.

[0038] It is understandable that referring to Figure 4 As shown, the first thermal conductive layer frame 120 includes a first side plate 121 and a first thermal conductive layer main body 122, one end of the first thermal conductive layer main body 122 is abutted against both ends of the first side plate 121, and each magnetic conductive layer frame 110 includes a first magnetic conductive layer sub-frame 111, a second magnetic conductive layer sub-frame 112 and a fitting portion, and the second side edges of the first magnetic conductive layer sub-frame 111 and the second magnetic conductive layer sub-frame 112 are fitted together through corresponding fitting portions to form corresponding magnetic conductive layer frames 110; a mounting opening 150 is provided on the first side edge of the first magnetic conductive layer sub-frame 111.

[0039] By abutting one end of the first thermal conductive layer main body 122 against the two ends of the first side plate 121, the installation between the first magnetic conductive layer sub-frame 111 and the second magnetic conductive layer sub-frame 112 and the installation of the first thermal conductive layer frame 120 can be more convenient while ensuring that the remaining gap between the signal main body 200 and the magnetic conductive layer frame 110 is small.

[0040] The present application does not limit the structure of the interlocking portion. In some embodiments, it can be a translational interlocking interlocking or an up-and-down interlocking interlocking. Those skilled in the art can selectively set it according to actual needs.

[0041] It is understandable that referring to Figure 4 As shown, the length of the second side of the first magnetic layer sub-frame 111 of the same magnetic layer frame 110 is different from the length of the second side of the second magnetic layer sub-frame 112, and the length of the second side of the first magnetic layer sub-frame 111 of different magnetic layer frames 110 is different.

[0042] By setting different lengths for the second side of the first magnetic layer sub-frame 111 and the second side of the second magnetic layer sub-frame 112 of the same magnetic layer frame 110, the second side of the first magnetic layer sub-frame 111 of different magnetic layer frames 110 can have different lengths, thereby making the fitting positions different. This makes the structure of the assembled housing 100 more stable.

[0043] It is understandable that referring to Figures 2 to 4As shown, the housing 100 further includes a second heat-conducting layer frame 140 , which is disposed between each two adjacent magnetic conductive layer frames 110 . A mounting opening 150 is provided on a side of the second heat-conducting layer frame 140 close to the first side of each magnetic conductive layer frame 110 .

[0044] The second heat-conducting layer frame 140 can not only prevent mutual interference between different magnetic-conducting layer frames 110 , but also improve the heat dissipation effect of the signal main body 200 .

[0045] The second heat-conducting layer frame 140 and the first heat-conducting layer frame 120 have the characteristics of easy processing, non-magnetic conductivity, low density and good thermal conductivity. In some embodiments, the second heat-conducting layer frame 140 and the first heat-conducting layer frame 120 are both configured as aluminum alloy frames.

[0046] It is understandable that referring to Figure 4 As shown, multiple magnetic conductive layer frames 110 include a first magnetic conductive layer frame 110 and a second magnetic conductive layer frame 110, the first magnetic conductive layer frame 110 is the outermost frame of the shell, the second magnetic conductive layer frame 110 is embedded in the first magnetic conductive layer frame 110, and the interlocking portion on the second magnetic conductive layer frame 110 includes a protrusion 131 and a groove 132, the area of ​​the first end of the protrusion 131 is larger than the area of ​​the second end of the protrusion 131, the first end is arranged close to the groove 132, and the second end is arranged away from the groove 132; the interlocking portion on the first magnetic conductive layer frame 110 is set as a screw hole 133.

[0047] The protrusions 131 and the grooves 132 are used for interlocking through the interlocking part of the non-outermost magnetic conductive layer frame, so that the layers are more closely fitted while ensuring airtightness. The screw holes 133 are set through the interlocking part of the outermost magnetic conductive layer frame to further reinforce the screw holes 133.

[0048] In some embodiments, the protrusions 131 in the engaging portions of two adjacent first magnetic conductive layer frames 110 are respectively located in the first magnetic conductive layer sub-frame 111 and the second magnetic conductive layer sub-frame 112 , thereby further ensuring the stability of the housing 100 .

[0049] It is understandable that the screw holes 133 are located at the corners of the housing 100 , ie, at the locations where the magnetic lines of force are the least, thereby ensuring less leakage of the magnetic lines of force.

[0050] It is understandable that referring to Figure 4 As shown, the second heat-conducting layer frame 140 includes a second side plate 141 and a second heat-conducting layer body 142 . One end of the second heat-conducting layer body 142 abuts against two ends of the corresponding second side plate 141 .

[0051] It is understandable that the first heat conducting layer frame 120 and the second heat conducting layer frame 140 are both configured as aluminum alloy frames.

[0052] It is understandable that the ratio between the thickness of the first thermal conductive layer frame 120 and the thickness of the magnetic conductive layer frame 110 is set to 3:2.

[0053] For example, the thickness of the first heat-conducting layer frame 120 and the second heat-conducting layer frame 140 are both set to 0.3 mm, and the thickness of the magnetic conductive layer is both set to 0.2 mm.

[0054] It can be understood that the magnetic conductive layer is provided with three layers.

[0055] For example, with a permeable layer thickness of 0.2mm, each shielding layer can block approximately 90% of the spatial magnetic flux. This can reduce the external magnetic flux by orders of magnitude. Generally, three shielding layers can achieve a good frequency blocking effect. Therefore, setting up three layers can ensure that the required volume is met while ensuring the electrostatic shielding effect.

[0056] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An isolator, characterized in that: include: The housing comprises a plurality of magnetic conductive layer frames and a first thermal conductive layer frame; the plurality of magnetic conductive layer frames are mutually sleeved and sleeved on the outside of the first thermal conductive layer frame to form a housing with openings on both sides; two adjacent magnetic conductive layer frames are spaced apart; and a mounting opening is provided on the first side of each magnetic conductive layer frame and the first thermal conductive layer frame; The signal main body is embedded in the first heat-conducting layer frame and the outer wall of the signal main body is fitted with the inner wall of the first heat-conducting layer frame. The signal main body is provided with three ports, two of which are respectively provided in one-to-one correspondence with the two sides of the shell opening, and the other first port is provided in one-to-one correspondence with the installation port.

2. The isolator according to claim 1, characterized in that The first thermal conductive layer frame includes a first side plate and a first thermal conductive layer main body, one end of the first thermal conductive layer main body abuts against two ends of the first side plate, and each of the magnetic conductive layer frames includes a first magnetic conductive layer sub-frame, a second magnetic conductive layer sub-frame and a fitting part, and the second side edges of the first magnetic conductive layer sub-frame and the second magnetic conductive layer sub-frame are fitted into each other through the corresponding fitting parts; the first side edge of the first magnetic conductive layer sub-frame is provided with the mounting port.

3. The isolator according to claim 2, characterized in that The length of the second side of the first magnetic layer sub-frame of the same magnetic layer frame is different from the length of the second side of the second magnetic layer sub-frame, and the length of the second side of the first magnetic layer sub-frame of different magnetic layer frames is different.

4. The isolator according to claim 2, characterized in that The multiple magnetic conductive layer frames include a first magnetic conductive layer frame and a second magnetic conductive layer frame, the first magnetic conductive layer frame is the outermost frame of the shell, the second magnetic conductive layer frame is embedded in the first magnetic conductive layer frame, the embedding portion on the second magnetic conductive layer frame includes a protrusion and a groove, the area of ​​the first end of the protrusion is larger than the area of ​​the second end of the protrusion, the first end is set close to the groove, and the second end is set away from the groove; the embedding portion on the first magnetic conductive layer frame is set as a screw hole.

5. The isolator according to claim 1, wherein: The housing further includes a second heat-conducting layer frame, which is disposed between each two adjacent magnetic conductive layer frames. The second heat-conducting layer frame has a side adjacent to the first side of each magnetic conductive layer frame provided with the mounting opening.

6. The isolator according to claim 5, characterized in that The second heat-conducting layer frame includes a second side plate and a second heat-conducting layer main body. One end of the second heat-conducting layer main body abuts against two ends of the corresponding second side plate.

7. The isolator according to claim 5, characterized in that The first heat-conducting layer frame and the second heat-conducting layer frame are both configured as aluminum alloy frames.

8. The isolator according to claim 4, characterized in that The ratio between the thickness of the first heat-conducting layer frame and the thickness of the magnetic-conducting layer frame is set to 3:

2.

9. The isolator according to claim 1, wherein: The magnetic conductive layer is provided with three layers.

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