CN216818005U

CN216818005U - SMD shell and network transformer

Info

Publication number: CN216818005U
Application number: CN202220232798.2U
Authority: CN
Inventors: 阳东旭; 杜效白
Original assignee: Deyang Zhida Precision Electronics Co ltd
Current assignee: Deyang Zhida Precision Electronics Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-24
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to a surface mount type shell and a network transformer, and belongs to the technical field of electronic information networks. The network transformer comprises a coil and a patch type shell, wherein the patch type shell comprises a shell and patch type P I N needles, a plurality of wire arranging islands are arranged on the side wall of the shell, the PI N needles are arranged on the side wall of the shell and are provided with a wire winding end and a welding end, the wire winding end is provided with a wire winding portion with a sunken middle portion, and the height of the wire arranging islands is between the wire winding portion and the top end of the wire winding end. According to the network transformer provided by the utility model, the coil is placed in the patch type shell, the wire arranging island can separate the adjacent leads, so that the leads correspond to the specific PI N pins, and the adjacent leads can be effectively prevented from being separated from the wire arranging island and interfering with each other due to the appropriate height of the wire arranging island.

Description

SMD shell and network transformer

Technical Field

The utility model belongs to the technical field of electronic information networks, and particularly relates to a surface mount type shell and a network transformer.

Background

The conventional electronic network transformer, filter and the like are generally classified into a direct insert type network transformer and a patch type network transformer, wherein the direct insert type network transformer places a coil in a shell, and a lead terminal of the coil needs to be wound or welded on an inner PIN end of the shell of the transformer so as to fix the lead terminal, and then an insert PIN end of a PIN is inserted on a circuit board and welded.

When the lead is fixed in a winding mode, the lead is not tightened, so that the lead can be displaced or separated from the wire arranging groove in the winding process, and the winding effect and the product performance are influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the embodiments of the present invention is to provide a chip package and a network transformer, in which adjacent leads are separated by a wire management island, the leads are limited in a specific area, and the adjacent leads can be effectively prevented from being separated from the wire management island and interfering with each other due to the appropriate height of the wire management island.

The embodiment of the utility model is realized by the following steps:

the embodiment of the utility model provides a patch type shell which comprises a shell body and a patch type PIN needle, wherein a plurality of wire arranging islands are arranged on the side wall of the shell body, the PIN needle is arranged on the side wall of the shell body and is provided with a wire winding end and a welding end, the wire winding end is provided with a wire winding part with a concave middle part, and the height of the wire arranging islands is between the wire winding part and the top end of the wire winding end.

As an alternative to the above embodiment, the PIN is disposed on a mounting wall of the housing, a bottom surface of the mounting wall is higher than a bottom surface of a middle portion of the housing, and a welding end of the PIN is attached to the bottom surface of the mounting wall and extends outward.

As an alternative of the above embodiment, a wire-arranging groove is formed between two adjacent wire-arranging islands, and the bottom surface of the wire-arranging groove is inclined outwards in a wedge shape in the direction from bottom to top.

As an alternative to the above embodiment, the patch type housing further includes a cover, which is disposed on the housing and covers the winding end.

As an alternative of the above embodiment, a positioning block is disposed at the top of the end arm of the housing, a positioning hole matched with the positioning block is disposed on the cover, and the positioning block is inserted into the positioning hole.

As an alternative to the above embodiment, both sides of the housing are provided with first stepped portions for abutment with the cover, the first stepped portions being located at the lower half of the housing.

As an alternative of the above embodiment, two ends of the cover are provided with auxiliary notches, and the outer sides of two ends of the casing are provided with second step portions, and the second step portions are inserted into the auxiliary notches.

As an alternative to the above embodiment, the width of the second step portion and the width of the auxiliary notch gradually increase from top to bottom.

As an alternative of the above embodiment, the diameter of the cross section of the wire-arranging island is gradually increased from top to bottom, and the top end of the wire-arranging island and the edge on one side close to the inner surface of the shell are cambered surfaces.

The embodiment of the utility model also provides a network transformer, which comprises a coil and the patch type shell, wherein the coil is arranged in the shell, and a lead of the coil is wound on the winding part.

The utility model has the beneficial effects that:

according to the network transformer provided by the utility model, the coil is placed in the patch type shell, the wire arranging island can separate the adjacent leads, so that the leads correspond to the specific PIN PINs, and the adjacent leads can be effectively prevented from being separated from the wire arranging island to interfere with each other due to the proper height of the wire arranging island.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model.

Fig. 1 is a first schematic structural diagram of a network transformer according to an embodiment of the present invention;

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

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

fig. 4 is a first structural schematic view (without a cover) of the patch type housing according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a patch type housing according to an embodiment of the present invention (without a cover);

fig. 6 is a schematic structural diagram of a patch type housing (without a cover) according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a patch type housing according to an embodiment of the present invention (no cover);

fig. 8 is a schematic structural diagram of a patch type housing according to an embodiment of the present invention (no cover);

fig. 9 is a schematic structural diagram six (without a cover) of the patch type housing according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a cover according to an embodiment of the present invention.

Icon:

10-a network transformer;

11-patch type housing;

110-a housing; 111-wire management islands; 112-a wire arranging groove; 113-a positioning block; 114-a first step; 115-a second step;

120-PIN needle; 121-a winding end; 122-a welding end; 123-a winding part;

130-a lid; 131-positioning holes; 132-auxiliary notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a network transformer 10, where the network transformer 10 is configured to be mounted on a circuit board, where the network transformer 10 may be a transformer or a filter.

The network transformer 10 includes a coil (not shown) and a patch type housing 11, the coil being disposed in a casing 110.

The structure of coil can refer to prior art, mainly comprises iron core and enameled wire, and the enameled wire winding is on the iron core, and the tip of enameled wire is the lead wire, and the lead wire is used for being connected with the outside electricity, and a coil has many lead wires.

The number of coils is not limited, and in general, two coils may be in a group, and a group of coils may include a primary coil and a secondary coil, etc., and parts of the leads of the primary coil and the secondary coil are connected.

As shown in fig. 3, the chip on package 11 includes a housing 110, a chip on PIN 120, and a cover 130, and the chip on package 11 can be independently manufactured, sold, and the like without being attached to a coil.

Referring to fig. 4 to 9, the specific structure of the housing 110 is as follows: the shape of the housing 110 is not limited, for example, the housing 110 is substantially rectangular parallelepiped, irregular, etc., the housing 110 may be injection molded by injection molding, and the material of the housing 110 is generally plastic.

The housing 110 is provided with a containing cavity, the top of which is open, and the containing cavity is used for placing coils and the like, in this embodiment, the housing 110 includes a bottom wall, two installation walls and two end walls, and the two installation walls and the two end walls are all connected with the bottom wall, wherein the two installation walls are arranged oppositely, and the two end walls are arranged oppositely.

The top end of the installation wall of the shell 110 is provided with a plurality of wire arranging islands 111, the wire arranging islands 111 are distributed at intervals, a wire arranging groove 112 is formed between two adjacent wire arranging islands 111 or between the wire arranging island 111 and the end wall of the shell 110, the bottom surface of the wire arranging groove 112 is a guide slope, the guide slope can be inclined, the guide slope extends upwards and outwards from the bottom of the wire arranging island 111, the wire arranging groove 112 is in a wedge shape, and the lead of the coil can be separated by the wire arranging islands 111 and is attached to the guide slope.

The inner surface of the wire-arranging island 111 may be flush with the inner surface of the housing 110, and the cross-sectional diameter of the wire-arranging island 111 may gradually decrease in the bottom-to-top direction, so that the distance between the top ends of two adjacent wire-arranging islands 111 is relatively large, and the lead wire is conveniently placed. In addition, the top end of the wire arranging island 111 and the edge on one side close to the accommodating cavity can be in smooth transition to form an arc surface, so that damage to the lead can be reduced.

The bottom surface of the housing 110 is stepped, and in the embodiment, the bottom surface of the mounting wall is higher than the bottom surface of the bottom wall, and the height difference between the bottom surface of the mounting wall and the bottom surface of the bottom wall is smaller than the thickness of the PIN 120. After the PIN 120 is installed, a certain gap exists between the shell 110 and the circuit board, and the gap is mainly used for heat dissipation of a circuit below, so that normal work of a circuit is facilitated, and the service life of the circuit board is prolonged; when the network transformer 10 is removed, tweezers and the like can be inserted into the gap between the bottom surface of the housing 110 and the circuit board, so that the network transformer 10 can be tilted conveniently. In addition, as the gap is smaller than the thickness of the PIN needle 120, impurities can be effectively prevented from entering the gap.

All be provided with many PIN needles 120 on two installation walls of casing 110, interval sets up between many PIN needles 120, PIN needle 120 in this embodiment is SMD PIN needle 120, and PIN needle 120 is the slice and crooked promptly, and crooked shape is unlimited, and PIN needle 120 can laminate on the circuit board and weld, and wherein, PIN needle 120 includes wire winding end 121 and welding end 122, and wire winding end 121 can be around establishing the lead wire and fixed the lead wire, and welding end 122 is used for welding on the circuit board.

In the present embodiment, the PIN 120 penetrates the mounting wall of the housing 110 from top to bottom, the winding end 121 protrudes from the top end of the mounting wall, and the soldering end 122 protrudes from the bottom end of the mounting wall.

The winding end 121 of the PIN PIN 120 faces the wire arranging groove 112, the winding end 121 is provided with a winding part 123 with a concave middle part, and the width of the winding part 123 is reduced from two ends to the middle.

The wire arranging island 111 faces the middle position of the two PIN needles 120, and the height of the wire arranging island 111 is between the winding part 123 and the top end of the winding end 121. Generally, since the winding portion 123 of the patch PIN 120 is generally sheet-shaped (the straight PIN 120 is generally cylindrical, and therefore, the height of the wire-arranging island 111 is different to a certain extent), when the lead is wound, the lead is usually wound on both sides of the middle portion of the winding portion (even if the lead is located at another position, the lead slides toward the middle portion), and therefore, the height of the wire-arranging island 111 is higher than that of the winding portion 123, and the lead can be largely prevented from being detached from the wire-arranging groove 112.

The welding ends 122 of all the PIN PINs 120 are divided into two rows and are matched with structures on the circuit board, the welding ends 122 can be attached to corresponding positions on the circuit board, and after the welding ends 122 are placed in place, the welding ends 122 can be welded with the circuit board in modes of soldering and the like. When the network transformer 10 needs to be disassembled, the soldering tin between the soldering terminal 122 and the circuit board needs to be removed, and then the network transformer 10 needs to be tilted up by using a tool such as tweezers.

The soldering terminal 122 of the PIN 120 is attached to the bottom surface of the mounting wall and extends outward, and the bottom surface of the bottom wall of the housing 110 is located in a plane between the upper surface and the lower surface of the soldering terminal 122.

In other embodiments, it is also possible that the welding terminal 122 is bent to protrude from the side of the mounting wall, or that both the welding terminal 122 and the winding terminal 121 are located at the top end of the case 110.

After the leads of the coil are connected and the coil is fixed by glue, the coil can be closed by using a cover 130, that is, the winding end 121 and the like are covered by the cover 130 to protect the coil and the winding end 121 of the PIN 120, as shown in fig. 10, the cover 130 is box-shaped, that is, the cover 130 includes a top wall and a side wall, the cover 130 has a closed cavity with an opening at the bottom, and the cover 130 is covered on the housing 110 to enable the cover 130 to close the top of the housing 110 and the winding end 121 of the PIN 120.

The top of the two end arms of the housing 110 is provided with positioning blocks 113, the cover 130 is provided with positioning holes 131 matched with the positioning blocks 113, and the positioning blocks 113 are inserted into the positioning holes 131. When the cover 130 is placed on the housing 110, the cover 130 can be prevented from moving in the longitudinal direction or the width direction of the housing 110. The positioning block 113 and the positioning hole 131 may be in interference fit, transition fit, clearance fit, etc.

In this embodiment, the top height of the end wall of the housing 110 is slightly less than the height of the winding end 121 of the PIN 120, and therefore, the top surface of the inner wall of the cover 130 may be provided with a step shape, i.e., the middle of the top surface of the inner wall of the cover 130 is convex, and of course, in other embodiments, only the position of the inner wall of the cover 130 corresponding to the end wall may be convex, or the height of the end portion of the housing 110 may be slightly greater than the height of the winding end 121 of the PIN 120.

The housing 110 is provided with a step portion around, the step portion is used for abutting against the cover 130, the step portion can support the cover 130, limit the movable range of the cover 130, and prevent the cover 130 from bending the PIN 120, in this embodiment, the step portion is a first step portion 114 and a second step portion 115, the first step portion 114 and the second step portion 115 may transition at the end wall, and the first step portion 114 is lower than the second step portion 115.

The first step portions 114 are disposed on two sides of the housing 110, and the first step portions 114 are located at a lower half portion of the housing 110.

The second step portion 115 is disposed at the outer side of the two ends of the housing 110, the two ends of the cover 130 are provided with auxiliary notches 132, and the second step portion 115 is inserted into the auxiliary notches 132. In order to enable the second stepped portion 115 to be smoothly inserted into the auxiliary notch 132, the present embodiment provides the following: the width of the second stepped portion 115 and the width of the auxiliary notch 132 are gradually increased from top to bottom.

When the cover 130 is covered on the housing 110, the entire body is rectangular parallelepiped, and the cover 130 is completely closed with the first step portion 114 and the second step portion 115, so that the coil, the winding end 121 of the PIN 120, and the like can be completely located in the closed space, and the coil, the winding end 121, and the like can be effectively protected.

In other embodiments, it is possible that the cover 130 is not provided.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a SMD shell, its characterized in that includes casing and SMD PIN needle, be provided with a plurality of reason line islands on the lateral wall of casing, the PIN needle set up in the lateral wall of casing just has wire winding end and welding end, the wire winding end is provided with the wire winding portion that the middle part is sunken, reason the height in line island be in wire winding portion with between the top of wire winding end.

2. The surface mount package according to claim 1, wherein the PIN is disposed on a mounting wall of the housing, a bottom surface of the mounting wall is higher than a bottom surface of a middle portion of the housing, and a soldering end of the PIN is attached to the bottom surface of the mounting wall and extends outward.

3. The surface mount package according to claim 1, wherein a wire-managing groove is formed between two adjacent wire-managing islands, and a bottom surface of the wire-managing groove is tapered outward in a bottom-to-top direction.

4. The chip mounting housing according to claim 1, further comprising a cover disposed on the casing and covering the wire winding end.

5. The surface mount housing according to claim 4, wherein a positioning block is disposed on a top of the end arm of the housing, and a positioning hole matching with the positioning block is disposed on the cover, and the positioning block is inserted into the positioning hole.

6. The surface mount package according to claim 4, wherein first step portions for abutting against the cover are provided on both sides of the housing, and the first step portions are provided on a lower half portion of the housing.

7. The surface mount package according to claim 6, wherein auxiliary notches are provided at two ends of the cover, and second step portions are provided at outer sides of two ends of the housing, and the second step portions are inserted into the auxiliary notches.

8. The surface mount package according to claim 7, wherein the width of the second step portion and the width of the auxiliary notch gradually increase from top to bottom.

9. The surface mount housing according to claim 1, wherein a cross-sectional diameter of the wire management island increases gradually from top to bottom, and an edge of a top end of the wire management island and a side edge of the wire management island close to the inner surface of the case are arc surfaces.

10. A network transformer, comprising a coil and the surface mount type package according to any one of claims 1 to 9, wherein the coil is disposed in the package, and a lead of the coil is wound around the winding portion.