Magnetic ring sheath structure

Abstract

The utility model discloses a magnetic ring sheath structure, which belongs to the technical field of magnetic rings, and comprises a circular ring sleeve, an annular cover plate and at least two separators, one axial end face of the circular ring sleeve is provided with an annular groove, and the annular groove is used for placing a magnetic ring; the annular cover plate is arranged at one axial end of the circular ring sleeve and covers an opening of the annular groove; and the separators are uniformly arranged on the circular ring sleeve and are arranged at intervals along the circumferential direction of the circular ring sleeve. According to the utility model, the magnetic ring and the enamelled wires can be separated through the arranged circular ring sleeve and the annular cover sheet, and then the surface of the circular ring sleeve is divided into the winding areas with the same number as the separators by using the separators arranged on the circular ring sleeve, so that a plurality of groups of enamelled wires can be respectively wound in the corresponding winding areas; therefore, the weight distribution of the whole body formed after the enameled wire is wound is uniform, and the unsoldering risk after the enameled wire pins are welded on the PCB is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic rings, and in particular relates to a magnetic ring sheath structure. Background Art

[0002] Nowadays, people's living standards have improved, electronic products are widely used, and large-scale integrated circuits have developed rapidly. There is an electronic component in the integrated circuit called a magnetic ring. As the name suggests, the magnetic ring is a ring-shaped magnetic conductor. The magnetic ring is a commonly used anti-interference component in electronic circuits, which has a good inhibitory effect on high-frequency noise. Generally, it is made of ferrite materials. The magnetic ring will have different impedance characteristics at different frequencies. The impedance will be much smaller at low frequencies. The higher the signal frequency, the stronger the anti-interference of the magnetic ring. The magnetic ring on the PCB board is directly exposed, that is, multiple sets of enameled wires are directly wound on the magnetic ring.

[0003] The above-mentioned structural design of directly winding multiple groups of enameled wires outside the magnetic ring has the following shortcomings: after the multiple groups of enameled wires are wound, since the winding range of each group of enameled wires is not limited, the enameled wires on the magnetic ring will be arranged in a messy manner, which will lead to the problem of uneven weight distribution of the whole composed of the magnetic ring and the enameled wires. At this time, after the pins of the enameled wires are soldered to the PCB board, the risk of desoldering of the solder joints will increase due to the uneven overall weight distribution. Utility Model Content

[0004] The utility model aims to solve the problem pointed out in the background technology that the exposed magnetic ring in the prior art easily leads to the desoldering of the solder joints, and proposes a magnetic ring sheath structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A circular ring sleeve, wherein an annular groove is provided on one axial end surface of the circular ring sleeve, and the annular groove is used to place a magnetic ring;

[0007] An annular cover sheet, which is disposed at one axial end of the annular sleeve and covers the opening of the annular groove;

[0008] At least two separators are evenly arranged on the annular sleeve and spaced apart along the circumference of the annular sleeve, and the surface of the annular sleeve is divided into winding areas equal to the number of the separators, and the winding areas are used for winding wires.

[0009] Preferably, the separator is L-shaped, and comprises a first separator and a second separator connected in one piece, the first separator and the second separator are strip-shaped and arranged perpendicular to each other, the first separator is arranged on the outer ring surface of the annular sleeve, the second separator is arranged on the end surface of the annular sleeve axially away from the annular cover sheet, and one end of the second separator away from the first separator protrudes from the inner ring surface of the annular sleeve;

[0010] A first winding groove is formed between two adjacent second partitions protruding from the inner annular surface of the annular sleeve, and the second winding groove formed between two adjacent partitions cooperates with the first winding groove formed between the two adjacent partitions to form the winding area.

[0011] Preferably, the number of the separators is three.

[0012] Preferably, a wire outlet hole and a wire inlet hole are respectively formed on the parts of the first partition and the second partition protruding from the inner annular surface of the annular sleeve, and the axial directions of the wire outlet hole and the axial directions of the wire inlet hole are parallel to the axial direction of the annular sleeve.

[0013] Preferably, an end surface of the first partition away from the second partition is flush with an axial end surface of the annular sleeve.

[0014] Preferably, the annular sleeve and the separator are integrally formed.

[0015] Preferably, after the annular cover sheet presses the magnetic ring inside the annular groove, an end face of the annular cover sheet away from the magnetic ring is flush with an axial end face of the annular sleeve or protrudes from an axial end face of the annular sleeve.

[0016] Preferably, a positioning column is provided on the surface of the second partition away from the other axial end of the annular sleeve.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. In the utility model, the magnetic ring and the enameled wire can be separated by the circular ring sleeve and the annular cover sheet, and then the surface of the circular ring sleeve is divided into winding areas of the same size and quantity as the separators by the separators evenly arranged on the circular ring sleeve, so that multiple groups of enameled wires can be wound in their respective corresponding winding areas, so that the weight distribution of the whole formed after the winding of the enameled wire is even, and the risk of desoldering after the enameled wire pins are welded to the PCB board is reduced.

[0019] 2. In the utility model, on the one hand, the winding area is used to limit the winding of the enameled wire, so that the entire magnetic ring can be wound and produced in a very standardized manner. On the other hand, the outlet hole and the inlet hole are used to limit the positions of the two ends of the enameled wire, so that the magnetic ring can be completely welded on the PCB board in a very standardized and flat manner, so that the space of the PCB board is released. This structure better protects the magnetic ring and can greatly improve the flow efficiency during production, thereby saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall top view of a magnetic ring sheath structure proposed by the utility model;

[0021] Figure 2 A magnetic ring sheath structure proposed by the utility model Figure 1 AA side view structural diagram;

[0022] Figure 3 This is a schematic diagram of a top view of the annular cover plate of a magnetic ring sheath structure proposed by the utility model;

[0023] Figure 4 A magnetic ring sheath structure proposed by the utility model Figure 1 Schematic diagram of the cross-sectional structure viewed from the AA direction.

[0024] Legend: 1. Circular ring sleeve; 11. Annular groove; 2. Annular cover plate; 3. Partition; 31. First partition; 311. Wire outlet hole; 32. Second partition; 321. Wire entry hole; 322. Positioning column; 4. Winding area; 41. First winding groove; 42. Second winding groove. DETAILED DESCRIPTION

[0025] The utility model is described below in conjunction with specific embodiments.

[0026] like Figures 1 to 4 As shown, this embodiment provides a magnetic ring sheath structure, which includes a circular ring sheath 1, an annular cover sheet 2 and at least two separators 3, and the annular cover sheet 2 is as shown in FIG. Figure 3 As shown in the circular ring shape, the circular ring sleeve 1 and the separator 3 are integrally formed. For the convenience of description and in combination with actual needs, the number of separators 3 in this embodiment is three.

[0027] The above-mentioned annular sleeve 1 and annular cover sheet 2 are both made of plastic material, and the corners of the annular sleeve 1 and the annular cover sheet 2 are both provided with rounded corners. Due to the low hardness of plastic, the enameled wire surface can be prevented from being scratched by the annular sleeve 1 when winding the enameled wire.

[0028] Specifically, an annular groove 11 is provided on one axial end face of the annular sleeve 1, and the annular groove 11 is used to place the magnetic ring, and the annular cover plate 2 is arranged at one axial end of the annular sleeve 1 and covers the opening of the annular groove 11, so that the magnetic ring placed inside the annular groove 11 can be pressed and fixed to prevent the magnetic ring from axially moving inside the annular groove 11.

[0029] like Figure 1 As shown, three separators 3 are evenly arranged on the annular sleeve 1, so that the surface of the annular sleeve 1 can be divided into winding areas 4 equal to the number of separators 3, that is, three winding areas 4, and the winding area 4 is used for winding wires, and the wires here refer to enameled wires. In this way, three groups of enameled wires can be wound in the three winding areas 4 respectively, so that the overall weight distribution formed after the enameled wires are wound is even, reducing the risk of desoldering after the enameled wire pins are soldered to the PCB board.

[0030] In the above scheme, the magnetic ring and the enameled wire can be separated by the circular ring sleeve 1 and the annular cover plate 2, and then the surface of the circular ring sleeve 1 is divided into winding areas 4 of the same number and size as the separators 3 by using the separators 3 evenly arranged on the circular ring sleeve 1, so that multiple groups of enameled wires can be respectively wound in their respective corresponding winding areas 4, so that the overall weight distribution formed after the enameled wire is wound is uniform, reducing the risk of desoldering of the enameled wire pins after being soldered to the PCB board. At the same time, since the winding areas 4 are of the same size, standardized production of magnetic rings can be achieved.

[0031] Furthermore, the separator 3 is L-shaped, and the separator 3 includes a first separator 31 and a second separator 32 that are integrally connected. The first separator 31 and the second separator 32 are strip-shaped and are arranged perpendicular to each other. The first separator 31 is arranged on the outer ring surface of the annular sleeve 1, and the second separator 32 is arranged on the side end surface of the annular sleeve 1 axially away from the annular cover plate. One end of the second separator 32 away from the first separator 31 protrudes from the inner ring surface of the annular sleeve 1, and one end surface of the first separator 31 away from the second separator 32 is flush with an axial end surface of the annular sleeve 1; a first winding groove 41 is formed between the parts of two adjacent second separators 32 protruding from the inner ring surface of the annular sleeve 1, and the parts of the three second separators 32 protruding from the inner ring surface of the annular sleeve 1 can be fixedly connected together, or can be as follows Figure 1 In the phase separation state shown, the second winding groove 42 formed between two adjacent separators 3 cooperates with the first winding groove 41 formed between the two adjacent separators 3 to form a winding area 4 (such as Figure 1 The dotted line portion shows one of the winding areas 4, and the other two winding areas 4 are not shown with dotted lines. During production, the enameled wire is wound inside the winding area 4).

[0032] like Figure 1As shown, a wire outlet hole 311 and a wire inlet hole 321 are respectively provided on the part of the first partition 31 and the second partition 32 protruding from the inner ring surface of the annular sleeve 1, and the axial direction of the wire outlet hole 311 and the axial direction of the wire inlet hole 321 are both parallel to the axial direction of the annular sleeve 1. When actually winding the wire, after one end of the enameled wire is inserted into the wire inlet hole 321, the winding can be started. When the winding is almost finished, the other end of the enameled wire is inserted into the wire outlet hole 311, and the length of the two ends of the enameled wire extending out of the bottom end surface of the annular sleeve 1 is kept consistent or approximately equal. The parts of the two ends of the enameled wire extending out of the bottom end surface of the annular sleeve 1 are used to solder the enameled wire to the pins on the PCB board.

[0033] In the above scheme, on the one hand, the winding area 4 is used to limit the winding of the enameled wire, so that the entire magnetic ring can be wound and produced in a very standardized manner. On the other hand, the outlet hole 311 and the inlet hole 321 are used to limit the positions of the two ends of the enameled wire, so that the magnetic ring can be completely welded on the PCB board in a very standardized and flat manner, so that the space of the PCB board is released. This structure better protects the magnetic ring and can greatly improve the flow efficiency during production, thereby saving labor costs.

[0034] After the annular cover plate 2 presses the magnetic ring inside the annular groove 11, the end face of the annular cover plate 2 away from the magnetic ring is flush with the axial end face of the circular ring sleeve 1 or protrudes from the axial end face of the circular ring sleeve 1. The purpose of such a setting is to utilize the binding force of the enameled wire to press the annular cover plate 2 onto the magnetic ring, and the magnetic ring can be fixed without adopting other structures.

[0035] A positioning column 322 is provided on the surface of the second partition 32 away from the other axial end of the annular sleeve 1. When the pin is soldered, the positioning column 322 can be inserted into the corresponding hole on the PCB board to achieve positioning, further improving the convenience of pin soldering.

[0036] The method of using this embodiment is as follows: during actual installation, first place the magnetic ring inside the annular groove 11, and then use the annular cover plate 2 to press the magnetic ring inside the annular groove 11 to prevent axial movement; then it is necessary to wind the enameled wire into the winding area 4 outside the annular sleeve 1. The specific winding method is as follows: first, pass one end of the prepared enameled wire through the wire entry hole 321 from top to bottom, and leave a certain welding length according to actual conditions (this welding length is the length of one end of the enameled wire extending out of the bottom end face of the second partition 32); then pass the other end of the enameled wire out from the first winding groove 41 on the right side of the wire entry hole 321, and wind the enameled wire according to the required number of turns in a sequence from left to right. It should be noted that The point is that when winding the last turn of the enameled wire, it is necessary to pull the last turn of the coil to the left so that the other end of the enameled wire can pass through the wire outlet hole 311. The winding process needs to avoid damaging the enameled wire on the surface of the enameled wire. Finally, the length of the other end of the enameled wire passing through the wire outlet hole 311 is controlled to be consistent with the length of one end of the enameled wire extending out of the bottom end surface of the second partition portion 32 (the excess part can be cut off); the above description is a winding method for one group of enameled wires, and the winding methods for the other two groups of enameled wires are the same as above, which will not be repeated here; after all the enameled wires are wound, the positioning column 322 is plugged into the corresponding hole on the PCB board, and then the two ends of the enameled wire are welded to the corresponding positions of the PCB board.

Claims

1. A magnetic ring sheath structure, characterized in that: include: A circular ring sleeve (1), wherein an annular groove (11) is provided on an axial end surface of the circular ring sleeve (1), and the annular groove (11) is used for accommodating a magnetic ring; an annular cover sheet (2), the annular cover sheet (2) being arranged at one axial end of the annular sleeve (1) and covering the opening of the annular groove (11); At least two separators (3) are evenly arranged on the annular sleeve (1) and spaced apart along the circumference of the annular sleeve, and the surface of the annular sleeve (1) is divided into winding areas (4) equal in number to the number of the separators (3), and the winding areas (4) are used for winding wires.

2. A magnetic ring sheath structure according to claim 1, characterized in that: The separator (3) is L-shaped, and comprises a first separator (31) and a second separator (32) which are integrally connected, the first separator (31) and the second separator (32) are strip-shaped and arranged perpendicular to each other, the first separator (31) is arranged on the outer ring surface of the annular sleeve (1), and the second separator (32) is arranged on the end surface of the annular sleeve (1) on one side of the axial direction away from the annular cover sheet, and one end of the second separator (32) away from the first separator (31) protrudes from the inner ring surface of the annular sleeve (1); A first winding groove (41) is formed between two adjacent second partitions (32) that protrude from the inner annular surface of the annular sleeve (1), and the second winding groove (42) formed between two adjacent partitions (3) cooperates with the first winding groove (41) formed between the two adjacent partitions (3) to form the winding area (4).

3. A magnetic ring sheath structure according to claim 1, characterized in that: The number of the separators (3) is three.

4. A magnetic ring sheath structure according to claim 2, characterized in that: A wire outlet hole (311) and a wire inlet hole (321) are respectively provided on the portions of the first partition (31) and the second partition (32) protruding from the inner annular surface of the annular sleeve (1), and the axial direction of the wire outlet hole (311) and the axial direction of the wire inlet hole (321) are both parallel to the axial direction of the annular sleeve (1).

5. A magnetic ring sheath structure according to claim 2, characterized in that: An end surface of the first partition portion (31) away from the second partition portion (32) is flush with an axial end surface of the annular sleeve (1).

6. A magnetic ring sheath structure according to claim 1, characterized in that: The annular sleeve (1) and the separator (3) are integrally formed.

7. The magnetic ring sheath structure according to claim 1, characterized in that: After the annular cover plate (2) presses the magnetic ring inside the annular groove (11), an end face of the annular cover plate (2) away from the magnetic ring is flush with an axial end face of the annular sleeve (1) or protrudes from an axial end face of the annular sleeve (1).

8. A magnetic ring sheath structure according to claim 2, characterized in that: A positioning column (322) is provided on the surface of the second partition portion (32) which is away from the other axial end of the annular sleeve (1).

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