CN218414227U

CN218414227U - Filter with tight winding

Info

Publication number: CN218414227U
Application number: CN202222774287.6U
Authority: CN
Inventors: 范文明
Original assignee: Shandong Hesong Electronic Technology Co ltd
Current assignee: Shandong Hesong Electronic Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-01-31
Anticipated expiration: 2032-10-21

Abstract

The application discloses a filter with tight winding, which comprises a magnetic core, a shell for accommodating the magnetic core, a base, a middle partition plate and pins, wherein the magnetic core comprises a top cover, a bottom cover and two parallel magnetic columns; the base comprises a bottom plate and a back plate which extends perpendicular to the bottom plate, the back plate comprises an upper retaining arm and a lower retaining arm, the upper retaining arm and the lower retaining arm are respectively positioned at the upper end and the lower end of the coil and used for limiting the upper end and the lower end of the coil so that the coil is wound tightly and cannot fall off, and the bottom plate comprises a groove positioned on the lower surface of the bottom plate; two ends of the middle partition plate are respectively fixed on the top cover and the bottom cover, and the middle partition plate is vertically arranged on the back plate and used for insulating and isolating the two coils; and a plurality of pins are inserted into one surface of the bottom plate, which is back to the back plate, and are used for being connected with other electrical appliances. This application simple structure, the coil wire winding is tight real and does not drop.

Description

Filter with tight winding

Technical Field

The application relates to the field of filters, in particular to a filter with compact wire winding.

Background

The filter is used as a common electrical component in almost all electronic products, and has a simple principle and a wide application range. The main components of the filter are a coil and a magnetic core, but after the coil of the current filter is wound on the magnetic core, the left side and the right side of the coil are tightly pressed by one side under the action of the upper part of the magnetic core, and loose conditions can easily occur on the other side, so that the magnetic core is not tightly wound, when the number of turns is the same, the resistance of the loosely wound filter is large, electromagnetic force is crossed, and the coil is damaged by an insulating layer due to inter-turn friction clamp caused by vibration during electrification, and further the coil is burnt down by inter-turn short circuit.

Therefore, there is a need for a filter with a tight winding that can wind the coil tightly without loosing the coil.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a filter with a tight winding, which can wind a coil tightly and save cost.

The embodiment of the application can be realized by the following technical scheme:

a filter with tight winding comprises a magnetic core, a shell for containing the magnetic core, a base, a middle partition plate and pins, wherein the magnetic core comprises a top cover, a bottom cover and two parallel magnetic columns, the top cover and the bottom cover are oppositely arranged, the two magnetic columns are vertically arranged between the top cover and the bottom cover, two ends of the two magnetic columns are respectively fixed on the top cover and the bottom cover, and the two magnetic columns are used for winding a coil;

the base comprises a bottom plate and a back plate which extends perpendicular to the bottom plate, and a plurality of pins are inserted into one surface of the bottom plate, which is back to the back plate;

the back plate comprises an upper retaining arm and a lower retaining arm, and the upper retaining arm and the lower retaining arm are respectively positioned at the upper end and the lower end of the coil;

the bottom plate comprises a groove positioned on the lower surface of the bottom plate;

the two ends of the middle partition plate are respectively connected to the top cover and the bottom cover, and the middle partition plate is vertically arranged on the back plate.

Further, the spatial distance between the upper blocking arm and the lower blocking arm is matched with the height of the magnetic column.

Furthermore, the pins comprise a first pin, a second pin, a third pin and a fourth pin, the first pin and the second pin are located on one side of the bottom plate close to the back plate, and the third pin and the fourth pin are arranged opposite to the first pin and the second pin;

the groove is located in the middle of the pin.

Furthermore, the magnetic core further comprises two clamping grooves which are oppositely arranged, the two clamping grooves are matched with the upper surface and the lower surface of the middle partition board, and the upper surface and the lower surface of the middle partition board are accommodated in the clamping grooves.

Further, the back plate also comprises two long protruding strips which are positioned in the middle of the outer surface of the back plate and extend along the extension direction of the back plate.

Further, the back plate also comprises a wire passing groove between each protruding strip and the adjacent edge of the back plate.

Furthermore, the backboard also comprises a wire winding port, and the wire winding port is positioned at one side of the backboard far away from the bottom plate and is positioned at one end close to each protruding strip;

the number of the winding ports is 2.

Further, the backboard also comprises a first wrapping post, and the first wrapping post is positioned on one side of the backboard far away from the top cover and is positioned at one end far away from the long protruding strip;

the number of the first wrapping posts is 2.

Furthermore, the bottom plate also comprises a plurality of positioning columns which are arranged in a downward protruding mode.

Further, the bottom plate further comprises a second wrapping post, the second wrapping post is arranged on the bottom plate along the direction far away from the back plate, and the second wrapping post corresponds to the third pin and the fourth pin in position.

The filter with the tightly wound wire has the following beneficial effects:

the upper retaining arm and the lower retaining arm are arranged on the back plate and can be matched with the top cover and the bottom cover of the magnetic column together, so that the coil is kept to be wound tightly; the groove is formed in the bottom plate, so that the material of the original groove part can be saved, and the cost is saved.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

fig. 2 is a schematic view of an overall structure of another aspect of the present application.

Reference numerals in the figures

1. A magnetic core 11, a magnetic column 12, a top cover 13, a bottom cover 14 and a clamping groove;

2. a middle partition plate;

3. the winding device comprises a base 31, a bottom plate 311, a groove 312, a positioning column 313, a second winding column 32, a back plate 321, an upper blocking arm 322, a lower blocking arm 323, a first winding column 324, a winding opening 325, a wire passing groove 326 and a protruding strip;

4. pin 41, first pin, 42, second pin, 43, third pin, 44, fourth pin.

Detailed Description

Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

In addition, various components on the drawings are enlarged (thick) or reduced (thin) for convenience of understanding, but this is not intended to limit the scope of the present application.

Singular references also include plural references and vice versa.

In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the application is used, the description is only for convenience of describing the application and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, the limitation of the application is not understood. Furthermore, the terms first, second, etc. may be used herein to distinguish between various elements, but these should not be limited by the order of manufacture or by importance to indicate or imply relative importance, the details of the application and the claims below may differ in name.

The terminology used in the description is for the purpose of describing the embodiments of the application and is not intended to be limiting of the application. It should also be noted that unless otherwise explicitly stated or limited, the terms "disposed," "connected," and "connected" should be interpreted broadly, as if they were fixed or removable, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The above-mentioned meanings specifically ascribed to the present application will be understood to those skilled in the art.

Fig. 1 shows a schematic overall structure of an embodiment of the present application, and as shown in fig. 1, a filter with a compact winding includes a magnetic core 1, a housing for accommodating the magnetic core 1, a base 3, a middle partition 2, and pins 4.

The magnetic core 1 comprises a top cover 12, a bottom cover 13 and two side-by-side magnetic columns 11, wherein the top cover 12 and the bottom cover 13 are arranged oppositely, the two magnetic columns 11 are vertically arranged between the top cover 12 and the bottom cover 13, two ends of the two magnetic columns 11 are fixed on the top cover 12 and the bottom cover 13 respectively, and the two magnetic columns 11 are used for winding coils. In this embodiment, the top cover 12 and the bottom cover 13 are flat plate structures, the two side-by-side magnetic pillars 11 are both cylindrical structures, after the coils are wound on the magnetic pillars 11, the magnetic circuits of the filter are symmetrical, and the magnetic resistances in the upper, lower, left and right directions are uniformly distributed. It is envisioned that the top cover 12 and the bottom cover 13 may be configured in a dome-shaped configuration in other embodiments.

The base 3 includes a bottom plate 31 and a back plate 32 extending perpendicular to the bottom plate 31. The bottom plate 31 comprises the groove 311 positioned on the lower surface of the bottom plate 31, the groove 311 is not arranged on the lower surface of the bottom plate 31 of the traditional filter, and the arrangement of the groove 311 can save materials and reduce the cost. The bottom plate 31 is provided with a second winding post 313 along a direction away from the back plate 32, which can prevent the coil from shifting when the coil is routed. The bottom plate 31 further includes a plurality of positioning posts 312 protruding downward for positioning the electrical connection of the filter.

In order to realize the tight winding of the wound coil, the back plate 32 comprises an upper retaining arm 321 and a lower retaining arm 322, the upper retaining arm 321 and the lower retaining arm 322 are respectively positioned at the upper end and the lower end of the wound coil, and the spatial distance between the upper retaining arm 321 and the lower retaining arm 322 is matched with the height of the magnetic column 11, so that the upper retaining arm 321 and the lower retaining arm 322 just contact the upper end and the lower end of the wound coil to limit the wound coil up and down, and the wound coil is tight and does not fall off.

Two ends of the middle partition board 2 are respectively connected to the top cover 12 and the bottom cover 13, the middle partition board 2 is vertically arranged on the back plate 32, and the middle partition board 2 is used for isolating the coils wound on the two magnetic columns 11 to play a role in insulation and isolation. In order to realize the stable connection between the middle partition board 2 and the magnetic core 1, in a preferred embodiment, the magnetic core 1 further includes two opposite clamping grooves 14, the two clamping grooves 14 are matched with the upper and lower surfaces of the middle partition board 2, the height of the middle partition board 2 is slightly higher than that of the magnetic column 11, the upper and lower surfaces of the middle partition board 2 are accommodated in the clamping grooves 14, and the stable connection between the magnetic core 1 and the middle partition board 2 can be realized.

The pins 4 are inserted into a surface of the bottom plate 31 facing away from the back plate 32, the grooves 311 are located in the middle of the pins 4, and the pins 4 are used for insertion of electrical connections. In this embodiment, the number of the pins 4 is 4, and the pins are respectively a first pin 41, a second pin 42, a third pin 43, and a fourth pin 44. The first pins 41 and the second pins 42 are located on one side of the bottom plate 31 close to the back plate 32, and the leads of the two coils close to one end of the top cover 12 are wired from the outer surface of the back plate 32 and are respectively connected with the corresponding first pins 41 and second pins 42; the third lead 43 and the fourth lead 44 are disposed opposite to the first lead 41 and the second lead 42, the second winding leg 313 corresponds to the third lead 43 and the fourth lead 44, and the leads of the two coils near one end of the bottom cover 13 are respectively connected to the third lead 43 and the fourth lead 44 along the second winding leg 313.

In order to facilitate the routing of the coil leads, in a preferred embodiment, the back plate 32 further includes two protruding strips 326, a wire passing groove 325, a wire passing opening 324, and first winding posts 323, two protruding strips 326 are located at a middle position of the outer surface of the back plate 32 and extend along the back plate 32, the wire passing groove 325 is formed between each protruding strip 326 and an adjacent edge of the back plate 32, two wire passing openings 324 are located at a side of the back plate 32 away from the bottom plate 31 and near an end of each protruding strip 326, and two first winding posts 323 are located at a side of the back plate 32 away from the top cover 12 and far from an end of the protruding strips 326. The lead wires of the two coils near one end of the top cover 12 are routed along the wire passing slot 325 through the wire winding port 324 and connected with the first pin 41 and the second pin 42 along the edge of the first winding post 323. The protruding strip 326, the winding opening 324 and the first winding post 323 can effectively prevent the coil from shifting during routing.

While the present invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof as defined in the appended claims.

Claims

1. The utility model provides a filter that wire winding is inseparable, includes magnetic core (1), is used for holding shell, base (3) of magnetic core (1), intermediate bottom (2) and pin (4), its characterized in that:

the magnetic core (1) comprises a top cover (12), a bottom cover (13) and two parallel magnetic columns (11), the top cover (12) and the bottom cover (13) are arranged oppositely, the two magnetic columns (11) are vertically arranged between the top cover (12) and the bottom cover (13), two ends of the two magnetic columns (11) are respectively fixed on the top cover (12) and the bottom cover (13), and the two magnetic columns (11) are used for winding coils;

the base (3) comprises a bottom plate (31) and a back plate (32) which extends perpendicular to the bottom plate (31), and a plurality of pins (4) are inserted into one surface of the bottom plate (31) back to the back plate (32);

the back plate (32) comprises an upper baffle arm (321) and a lower baffle arm (322), and the upper baffle arm (321) and the lower baffle arm (322) are respectively positioned at the upper end and the lower end of the coil;

the bottom plate (31) comprises a groove (311) positioned on the lower surface of the bottom plate (31);

two ends of the middle partition plate (2) are respectively connected to the top cover (12) and the bottom cover (13), and the middle partition plate (2) is vertically arranged on the back plate (32).

2. A tightly wound filter according to claim 1, wherein:

the spatial distance between the upper blocking arm (321) and the lower blocking arm (322) is matched with the height of the magnetic column (11).

3. A tightly wound filter according to claim 1, wherein:

the pins (4) comprise a first pin (41), a second pin (42), a third pin (43) and a fourth pin (44), the first pin (41) and the second pin (42) are positioned on one side of the bottom plate (31) close to the back plate (32), and the third pin (43) and the fourth pin (44) are arranged opposite to the first pin (41) and the second pin (42);

the groove (311) is located in the middle of the pin (4).

4. A compact wound filter according to claim 1, wherein:

the magnetic core (1) further comprises two oppositely arranged clamping grooves (14), the two clamping grooves (14) are matched with the upper surface and the lower surface of the middle partition plate (2), and the upper surface and the lower surface of the middle partition plate (2) are accommodated in the clamping grooves (14).

5. A tightly wound filter according to claim 1, wherein:

the back plate (32) further comprises two protruding strips (326) located at the middle position of the outer surface of the back plate (32) and extending along the extension direction of the back plate (32).

6. A tightly wound filter according to claim 5, wherein:

the backplate (32) further includes a wire passing trough (325) between each protruding strip (326) and an adjacent edge of the backplate (32).

7. A tightly wound filter according to claim 5, wherein:

the back plate (32) further comprises a wire winding port (324), and the wire winding port (324) is positioned at one side of the back plate (32) far away from the bottom plate (31) and is positioned at one end close to each protruding strip (326);

the number of the winding ports (324) is 2.

8. A close-wound filter according to claim 5, wherein:

the back panel (32) further comprises a first wrapping post (323), the first wrapping post (323) is positioned on one side of the back panel (32) far away from the top cover (12) and is positioned at one end far away from the protruding strip (326);

the number of the first winding posts (323) is 2.

9. A tightly wound filter according to claim 1, wherein:

the bottom plate (31) further comprises a plurality of positioning columns (312) which are arranged in a downward protruding mode.

10. A tightly wound filter according to claim 3, wherein:

the bottom plate (31) further comprises a second winding post (313), the second winding post (313) is arranged on the bottom plate (31) along the direction far away from the back plate (32), and the second winding post (313) corresponds to the third pin (43) and the fourth pin (44) in position.