CN211578933U

CN211578933U - Circular device

Info

Publication number: CN211578933U
Application number: CN202020431963.8U
Authority: CN
Inventors: 刘玉敏; 张典鹏; 刘朝胜; 田学红
Original assignee: Guangdong Dapu Telecom Technology Co Ltd
Current assignee: Guangdong feiytong Technology Co.,Ltd.
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-09-25
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to an electronic components field discloses an circulator. The circulator includes: the upper end of the shell is provided with an opening, the shell comprises a bottom plate and at least two first side walls, the first side walls are connected to the upper surface of the bottom plate, and a yielding groove is formed between every two adjacent first side walls; a magnetic assembly accommodated in the housing and including an upper permanent magnet; and the shell cover is arranged at the opening end of the shell and comprises a top plate and second side walls, the number of the second side walls is the same as that of the first side walls, the second side walls are connected to the lower surface of the top plate, the top plate is opposite to the bottom plate, the projection of the shell cover on the plane where the bottom plate is located does not exceed the projection of the shell, the second side walls can be inserted into the yielding grooves in a one-to-one correspondence mode, and the bottom edge height of each second side wall is lower than the highest point of the upper permanent magnet. The utility model provides a circulator can be when preventing the magnetic leakage, does not change the external diameter size of circulator.

Description

Circular device

Technical Field

The utility model relates to an electronic components technical field especially relates to an circulator.

Background

At present, with the miniaturization of communication systems, the layout of electronic components on a substrate is becoming more dense, and products with positive and negative magnetism, such as isolators or circulators, are often used in close-proximity. The traditional circulator comprises a shell and a disc-shaped shell cover, the outer diameter of the shell is the same as that of the shell cover, the disc is arranged at the position of an opening end of the shell, the shell cover cannot shield a magnet in the shell from the side, and due to the fact that the distance between electronic components is too short, products are easy to attract or repel, and therefore the performance of the products is affected.

One existing solution is to design the casing cover into a bottle cap shape, and cover the casing cover on the upper opening end of the casing of the circulator, so that the side of the casing cover shields the magnet, and the circulator is prevented from leaking magnetic from the side surface of the circulator, so that the magnetic environment of the circulator is kept in a closed space. However, since the housing cover increases the overall size of the circulator in the horizontal direction, the difficulty of the related design is increased, and the requirement that the size of the pad and the size of the outer diameter of the circulator are kept uniform cannot be satisfied.

How to prevent the leakage of the magnetic flux of the circulator without changing the outer diameter of the circulator is a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model aims to:

provided is a circulator, which can prevent magnetic leakage and does not change the outer diameter of the circulator.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a circulator, comprising:

the upper end of the shell is provided with an opening, the shell comprises a bottom plate and at least two first side walls, the first side walls are connected to the upper surface of the bottom plate, and a yielding groove is formed between every two adjacent first side walls;

a magnetic assembly accommodated in the housing, including an upper permanent magnet; and

the casing cover is located the open end of casing, the casing cover includes roof and second lateral wall, the quantity of second lateral wall with the quantity of first lateral wall is the same, the second lateral wall all connect in the lower surface of roof, the roof with the bottom plate is just to setting up, just the casing cover is in projection on the plane at bottom plate place does not surpass the projection of casing, the second lateral wall can insert one-to-one in the groove of stepping down, the base height of second lateral wall is less than go up the peak of permanent magnet.

As a preferable scheme, the edge of the top plate is provided with a limiting groove, the top of the first side wall is provided with limiting blocks, and the limiting blocks can be inserted into the limiting grooves in a one-to-one correspondence manner to limit the movement of the top plate relative to the bottom plate in the horizontal direction.

Preferably, a slope wall inclined from top to bottom from inside to outside is arranged on one side, close to the geometric center of the bottom plate, of the limiting groove, and the limiting block is hinged to the first side wall and can rotate around a horizontal axis to abut against and press the slope wall.

Preferably, the circumferential width of the second side wall is smaller than or equal to the circumferential width of the abdicating groove.

Preferably, the first side walls are evenly distributed around the geometric center of the bottom plate.

Preferably, the circulator further comprises a pin terminal, and the pin terminal is electrically connected with the magnetic component and used for electrically connecting the magnetic component and an external circuit.

As a preferable scheme, the magnetic component further comprises an upper ferrite, a central conductor, a lower ferrite and a lower permanent magnet which are stacked from top to bottom, the upper permanent magnet is arranged above the upper ferrite, a connecting portion is arranged on the periphery of the central conductor, and one end of the pin terminal and the connecting portion are connected in the abdicating groove.

Preferably, the two side edges of each first side wall are provided with the same groove at the same height, and the height of the groove is the same as the installation height of the central conductor.

As a preferable scheme, the magnetic component further includes a terminal fixing plate, the terminal fixing plate is disposed between the lower ferrite and the lower permanent magnet, a fixing portion is disposed on a peripheral portion of the terminal fixing plate, and the fixing portion and the other end of the pin terminal are connected to the recess groove.

Preferably, the magnetic assembly further comprises a grounding plate, and the grounding plate is arranged between the upper permanent magnet and the upper ferrite.

The utility model has the advantages that:

the utility model provides a circulator includes casing, casing cover and locates the magnetic component in the casing. On the one hand, the shell cover is provided with second side walls which are arranged in a one-to-one correspondence mode with the yielding grooves of the shell, the second side walls can be inserted into the yielding grooves in a one-to-one correspondence mode, the bottom edge height of each second side wall is not higher than the lowest point of each permanent magnet, and the upper permanent magnet is prevented from leaking magnetic flux through the yielding grooves. On the other hand, the projection of casing cover on the plane that the bottom plate in the casing belongs to does not exceed the projection of casing, and the casing cover does not increase the shared space of casing on the horizontal direction promptly, consequently, the utility model provides a circulator also does not change the external diameter size of circulator when can preventing the circulator magnetic leakage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a circulator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a housing cover according to an embodiment of the present invention;

fig. 4 is an exploded view of a circulator according to an embodiment of the present invention.

In the figure:

1. a housing; 11. a base plate; 12. a first side wall; 13. a yielding groove; 14. a limiting block; 15. a groove;

2. a housing cover; 21. a top plate; 22. a second side wall; 23. a limiting groove; 231. a sloping wall;

3. a magnetic component; 31. an upper permanent magnet; 32. a ground plate; 33. adding ferrite; 34. a center conductor; 35. a lower ferrite; 36. a terminal fixing plate; 37. a lower permanent magnet;

4. and a pin terminal.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the present embodiment provides a circulator including a housing 1, a housing cover 2, and a magnetic assembly 3. The upper end of the shell 1 is provided with an opening, the shell 1 comprises a bottom plate 11 and three first side walls 12, the first side walls 12 are connected to the upper surface of the bottom plate 11, the first side walls 12 are uniformly distributed around the geometric center of the bottom plate 11, and a yielding groove 13 is formed between every two adjacent first side walls 12; the shell cover 2 is arranged at the opening end of the shell 1, the shell cover 2 comprises a top plate 21 and three second side walls 22, the second side walls 22 are connected to the lower surface of the top plate 21, the top plate 21 is arranged opposite to the bottom plate 11, and the top plate 21 and the bottom plate 11 are both arranged into disc-shaped structures; the magnetic assembly 3 is housed in the casing 1 and comprises an upper permanent magnet 31.

Specifically, on one hand, the second side walls 22 can be inserted into the yielding slots 13 in a one-to-one correspondence manner, and the height of the bottom edges of the second side walls 22 is lower than the highest point of the upper permanent magnets 31, so as to block the upper permanent magnets 31 from leaking magnetic flux through the yielding slots 13; on the other hand, the projection of the housing cover 2 on the plane where the bottom plate 11 in the housing 1 is located does not exceed the projection of the housing 1, that is, the housing cover 2 does not increase the space occupied by the housing 1 in the horizontal direction, therefore, the circulator provided by the embodiment does not change the outer diameter size of the circulator while preventing the leakage of the circulator, does not affect the difficulty of the associated design, and can meet the requirement that the pad size and the outer diameter size of the circulator are kept uniform.

Alternatively, in order to further enhance the effect of blocking the leakage magnetic flux, the height of the bottom edge of the second side wall 22 may also be restricted to be not higher than the lowest point of the upper permanent magnet 31.

In other embodiments of the present invention, according to actual requirements, the first side wall 12 on the housing 1 may also be provided with two or more than three, and the number of the second side walls 22 is the same as the number of the first side walls 12, and corresponds to the yielding grooves 13 one to one.

Alternatively, the circumferential width of the second sidewall 22 may be smaller than the circumferential width of the relief groove 13, so as to facilitate the insertion of the second sidewall 22 into the relief groove 13; the circumferential width of the second sidewall 22 may also be equal to the circumferential width of the abdicating groove 13, so that both sides of the second sidewall 22 are abutted to the sides of the first sidewall 12, thereby improving the effect of the second sidewall 22 in blocking the magnetic leakage of the upper permanent magnet 31 through the abdicating groove 13.

Furthermore, a limiting groove 23 is formed in the edge of the top plate 21 of the housing cover 2, a limiting block 14 is correspondingly arranged at the top of each first side wall 12, and the limiting blocks 14 can be inserted into the limiting grooves 23 in a one-to-one correspondence manner to limit the movement of the top plate 21 relative to the bottom plate 11 in the horizontal direction. Furthermore, a slope wall 231 inclined from top to bottom is arranged on one side of the limiting groove 23 close to the geometric center of the bottom plate 11, the limiting block 14 is hinged to the first side wall 12, and the limiting block 14 can rotate around a horizontal axis to abut against and press the slope wall 231 to limit the movement of the top plate 21 relative to the bottom plate 11 in the vertical direction. Specifically, the stopper 14 may be pressed against the sloped wall 231 by a torsion spring or a snap.

Further, the circulator further includes a pin terminal 4, and the pin terminal 4 is electrically connected to the magnetic member 3 for electrically connecting the magnetic member 3 and an external circuit.

Further, the magnetic assembly 3 further includes an upper ferrite 33, a central conductor 34, a lower ferrite 35 and a lower permanent magnet 37 stacked from top to bottom, the upper permanent magnet 31 is disposed above the upper ferrite 33, a connection portion is disposed on a peripheral portion of the central conductor 34, and one end of the pin terminal 4 and the connection portion are connected to the recess groove 13.

Specifically, the upper ferrite 33 and the lower ferrite 35 are both composite oxides containing iron oxide and other iron group or rare earth group oxides as main components, are semiconductors, have a resistivity much higher than that of a general metal magnetic material, and have an advantage of small eddy current loss. The upper ferrite 33, the central conductor 34 and the lower ferrite 35 are positioned in a stable direct current magnetic field formed by the upper permanent magnet 31 and the lower permanent magnet 37, and the central conductor 34 can only allow current in one direction to pass through under the action of the faraday effect.

Further, the same grooves 15 are formed in the two side edges of each first side wall 12 at the same height, the height of each groove 15 is the same as the installation height of the central conductor 34, and the arrangement of the grooves 15 increases the short-circuit prevention distance between the central conductor 34 and the first side wall 12, so that the reliability is improved.

Preferably, the magnetic assembly 3 further includes a terminal fixing plate 36, the terminal fixing plate 36 is disposed between the lower ferrite 35 and the lower permanent magnet 37, a fixing portion is disposed on a peripheral portion of the terminal fixing plate 36, and the fixing portion and the other end of the pin terminal 4 are connected in the relief groove 13.

Preferably, the magnetic assembly 3 further comprises a ground plate 32, the ground plate 32 being provided between the upper permanent magnet 31 and the upper ferrite 33.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A circulator, comprising:

the device comprises a shell (1), wherein an opening is formed in the upper end of the shell (1), the shell (1) comprises a bottom plate (11) and at least two first side walls (12), the first side walls (12) are connected to the upper surface of the bottom plate (11), and a yielding groove (13) is formed between every two adjacent first side walls (12);

a magnetic assembly (3) housed in the casing (1) and comprising an upper permanent magnet (31); and

casing cover (2), locate the open end of casing (1), casing cover (2) include roof (21) and second lateral wall (22), the quantity of second lateral wall (22) with the quantity of first lateral wall (12) is the same, second lateral wall (22) all connect in the lower surface of roof (21), roof (21) with bottom plate (11) are just setting up, just casing cover (2) are in projection on the plane at bottom plate (11) place does not surpass the projection of casing (1), second lateral wall (22) can insert one-to-one in the groove of stepping down (13), the base height of second lateral wall (22) is less than go up the peak of permanent magnet (31).

2. The circulator of claim 1 wherein the top plate (21) has a limiting groove (23) at an edge thereof, the first sidewall (12) has a limiting block (14) at a top thereof, and the limiting blocks (14) can be inserted into the limiting groove (23) in a one-to-one correspondence to limit the movement of the top plate (21) in a horizontal direction relative to the bottom plate (11).

3. The circulator of claim 2 wherein the retaining slot (23) is provided with a sloping wall (231) sloping from top to bottom and outwardly on a side thereof adjacent to the geometric center of the base plate (11), and the retaining block (14) is hinged to the first side wall (12) and is rotatable about a horizontal axis to abut and compress the sloping wall (231).

4. Circulator according to claim 1, characterized in that the circumferential width of the second side wall (22) is smaller than or equal to the circumferential width of the relief groove (13).

5. Circulator as claimed in claim 1, characterized in that said first side wall (12) is evenly distributed around the geometric centre of said base plate (11).

6. Circulator as claimed in any of claims 1-5, further comprising a pin terminal (4), said pin terminal (4) being electrically connected with said magnetic assembly (3) for electrically connecting said magnetic assembly (3) and an external circuit.

7. The circulator as claimed in claim 6, wherein the magnetic assembly (3) further comprises an upper ferrite (33), a central conductor (34), a lower ferrite (35) and a lower permanent magnet (37) which are stacked from top to bottom, the upper permanent magnet (31) is arranged above the upper ferrite (33), a connecting portion is arranged on the periphery of the central conductor (34), and one end of the pin terminal (4) and the connecting portion are connected in the recess groove (13).

8. Circulator as claimed in claim 7, characterized in that both sides of each first side wall (12) are provided with the same groove (15) at the same height, the height of the groove (15) being the same as the installation height of the central conductor (34).

9. The circulator of claim 7 wherein the magnetic assembly (3) further comprises a terminal fixing plate (36), the terminal fixing plate (36) is disposed between the lower ferrite (35) and the lower permanent magnet (37), a peripheral portion of the terminal fixing plate (36) is provided with a fixing portion, and the fixing portion and the other end of the pin terminal (4) are connected in the recess groove (13).

10. Circulator according to claim 7, characterized in that said magnetic assembly (3) further comprises a ground plate (32), said ground plate (32) being provided between said upper permanent magnet (31) and said upper ferrite (33).