CN213905095U

CN213905095U - Small transformer for television

Info

Publication number: CN213905095U
Application number: CN202120131297.0U
Authority: CN
Inventors: 黄相程; 黄士桓
Original assignee: Shenzhen Yudu Lighting Co ltd
Current assignee: Shenzhen Yudu Lighting Co ltd
Priority date: 2021-01-16
Filing date: 2021-01-16
Publication date: 2021-08-06
Anticipated expiration: 2031-01-16

Abstract

The application relates to the technical field of electrical equipment, and discloses a miniature transformer for a television, which comprises a frame body and a winding framework, wherein the frame body is fixedly connected with an insulating shell, and a primary coil and a secondary coil are respectively positioned on two sides of the insulating shell. The frame body is as the basic carrier of E shape iron core, fixedly connected with insulating casing on the frame body, separates primary coil and secondary coil through insulating casing to it is insulating, make primary coil and secondary coil coaxial distribution, the setting of comparing the primary coil of traditional transformer and secondary coil is the disconnect-type design, the transformer primary coil of this application and secondary coil coaxial distribution have reduced the volume of transformer, make it be applicable to in the equipment that needs small-size components and parts.

Description

Small transformer for television

Technical Field

The application relates to the technical field of electrical equipment, in particular to a small-sized transformer for a television.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and a primary coil, a secondary coil and an E-shaped iron core (magnetic core) are used as main components; referring to fig. 3, a general E-shaped magnetic core is divided into a core and a core leg. The main functions of voltage transformation are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.

Chinese patent document No. CN204926993U discloses a small transformer, which comprises a heat dissipation frame, a framework, a coil, a magnetic core, a mounting plate, pins, a pin slot, and a heat insulation layer; the coil is wound on the framework, and the heat dissipation framework is sleeved outside the framework; the utility model discloses a coil, including skeleton, frame, insulating layer, lead wire electricity, the upper surface left and right sides of skeleton are equipped with the several pin groove, and the pin groove comprises two hollow cylinder concatenations, and pin groove and skeleton fixed connection are equipped with the insulating layer between pin groove and the skeleton, and the pin groove is connected with the lead wire electricity of coil respectively, and the vertical interpolation of pin is established in the pin groove.

In view of the above-mentioned related art, the inventor believes that the primary coil and the secondary coil are separated by the bobbin, and the bobbin has a large volume, so that the volume of the transformer becomes one of the factors that prevent the volume of the television set from being thinned.

SUMMERY OF THE UTILITY MODEL

The application provides a small transformer for a television, which aims to reduce the volume of the transformer and meet the requirement of service performance.

The application provides a small-size transformer for TV set adopts following technical scheme:

the utility model provides a small-size transformer for TV set, includes the frame body with E shape iron core grafting complex, fixes winding skeleton on the frame body and set up in primary coil and secondary coil on the winding skeleton, the axis direction perpendicular to of winding skeleton put up body length direction place plane, just be in on the frame body fixedly connected with the coaxial insulating casing of winding skeleton, primary coil with secondary coil is located the both sides of insulating casing respectively.

Through adopting above-mentioned technical scheme, the frame body is as the basic carrier of E shape iron core, fixedly connected with insulating casing on the frame body, through insulating casing with primary coil and secondary coil separation, and insulate, make primary coil and secondary coil coaxial distribution, the setting of comparing the primary coil and the secondary coil of traditional transformer is the disconnect-type design, the transformer primary coil and the coaxial distribution of secondary coil of this application have reduced the volume of transformer, make it be applicable to in the equipment that needs small-size components and parts.

Preferably, the frame body is provided with a first through groove which is connected with the core body in an inserting mode, and the frame body is provided with a second through groove which is connected with the center pillar in an inserting mode.

Through adopting above-mentioned technical scheme, set up the first logical groove of pegging graft with the core on putting up the body, set up the second logical groove of pegging graft with the center pillar on putting up the body, carry on spacingly to E shape iron core, fix its position to make E shape iron core and frame body closely cooperate, further reduced the volume of transformer.

Preferably, a plurality of isolation grooves for isolating the wires are formed in both ends of the frame body in the length direction.

Through adopting above-mentioned technical scheme, set up the isolation slot on the frame body, the wire that will come out from the coil is separated through different isolation slots, prevents that these wires from taking place because the short circuit condition that contacts and lead to.

Preferably, a pin fixedly connected to the frame body and used for connecting a wire is arranged between the adjacent isolation grooves.

Through adopting above-mentioned technical scheme, fixed connection pin on the frame body is fixed with the wire of the different turns that come out in the coil and different pins, and operating personnel can be directly through connecting different pins according to actual need's voltage, can accomplish the operation of adjustment voltage.

Preferably, the pin includes an extension portion and a connection portion, the extension portion and the connection portion are integrally formed, the connection portion is fixedly connected with the frame body, and the length direction of the connection portion is perpendicular to the plane where the length direction of the extension portion is located.

Through adopting above-mentioned technical scheme, the plane at connecting portion length direction perpendicular to extension length direction place of pin, because the transformer of this application is arranged in the TV set, the transformer passes through the pin to be connected with the circuit board, and the length direction of connecting portion is perpendicular with circuit board place plane to make the transformer more stable in the connection of circuit board.

Preferably, both ends of the insulating shell and the winding framework in the length direction are semicircular.

Through adopting above-mentioned technical scheme, insulating casing and winding skeleton length direction's both ends cross-section are semi-circular, and when coil and insulation board and winding skeleton twined, the angle that the coil was buckled changes gradually, avoids the coil to lead to the wire impaired because of the angle sudden change of buckling, influences electromagnetic induction's efficiency.

Preferably, the winding framework is fixedly connected with a limiting plate which is matched with the iron core in an inserting manner.

Through adopting above-mentioned technical scheme, the limiting plate of fixed connection and iron core joint on insulating skeleton, through another E shape iron core butt joint of the accurate and frame body grafting of a E shape iron core, two E shape iron core accuracy butt joints are favorable to going on of the electromagnetic induction of transformer.

Preferably, the limiting plate comprises a first plate body and a second plate body which both cover the coil.

Through adopting above-mentioned technical scheme, the limiting plate not only plays spacing effect to E shape iron core, and first plate body and second plate body wherein also carry out the cladding to primary and secondary coil simultaneously, play the effect of keeping apart coil and magnetic core.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the frame body is used as a basic carrier of the E-shaped iron core, the insulating shell is fixedly connected to the frame body, the primary coil and the secondary coil are separated through the insulating shell and are insulated, so that the primary coil and the secondary coil are coaxially distributed, and compared with the arrangement that the primary coil and the secondary coil of a traditional transformer are in a separated design, the transformer has the advantages that the volume of the transformer is reduced due to the coaxial distribution of the primary coil and the secondary coil, and the transformer is suitable for equipment needing small components;

2. the frame body is provided with a first through groove which is spliced with the core body, the frame body is provided with a second through groove which is spliced with the middle column, the E-shaped iron core is limited, the position of the E-shaped iron core is fixed, the E-shaped iron core is tightly matched with the frame body, and the size of the transformer is reduced;

3. the limiting plate fixedly connected with the iron core in a clamped mode is arranged on the insulating framework, one E-shaped iron core is accurately butted with the other E-shaped iron core inserted into the frame body through the limiting plate, and the two E-shaped iron cores are accurately butted to be beneficial to the electromagnetic induction of the transformer.

Drawings

Fig. 1 is an overall schematic diagram of a small transformer for a television according to an embodiment of the present application.

Fig. 2 is an exploded view of a small transformer for a television according to an embodiment of the present invention.

Fig. 3 is a schematic view of a core according to an embodiment of the present application.

Description of reference numerals: 1. a rack body; 11. a first through groove; 12. a second through groove; 2. an isolation trench; 3. a pin; 31. an extension portion; 32. a connecting portion; 4. a winding framework; 5. a limiting plate; 51. a first plate body; 511. a plate body groove; 52. a second plate body; 6. an iron core; 61. a core body; 62. a center pillar; 7. a primary coil; 8. a secondary coil; 9. an insulating shell.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a small-size transformer for a television. Referring to fig. 1 and 2, the small transformer for a television includes a frame body 1, and the frame body 1 serves as a basic carrier of a core 6 for providing basic support. Referring to fig. 3, the core 6 of the present embodiment is E-shaped, and includes a center pillar 62 in the middle and a core body 61 fixedly connected to the center pillar 62. The rack body 1 is of a rectangular plate-shaped structure, a second through groove 12 is formed in the middle of the rack body, the whole second through groove 12 is rectangular-like, two ends of the second through groove are semicircular, and the length direction of the second through groove 12 is the same as that of the rack body 1; the central column 62 of the iron core 6 is in plug fit with the second through slot 12. The semi-circular design facilitates insertion of the center post 62 into the second channel 12 by an installer during installation. Two first through grooves 11 are formed in the frame body 1, the two first through grooves 11 are symmetrically formed in the central axis of the second through groove 12 in the length direction, and the core body 61 of the iron core 6 is in inserting fit with the second through groove 12. The first through groove 11 and the second through groove 12 which are formed in the frame body 1 are in inserting fit with the E-shaped iron core 6, the E-shaped iron core 6 is limited, the position of the E-shaped iron core is fixed, the E-shaped iron core 6 is tightly matched with the frame body 1, and the size of the transformer is reduced.

Referring to fig. 1 and 2, a winding bobbin 4 is fixedly connected to the frame body 1, and the winding bobbin 4 is used for isolating the primary coil 7 or the secondary coil 8 from the iron core 6 and plays an insulating role. The winding framework 4 is of a cylindrical structure, the winding framework 4 is fixedly connected at a position close to the second through groove 12, the cross section of the winding framework 4 in the length direction is the same as that of the second through groove 12, and the inner wall of the winding framework 4 and the inner wall of the second through groove 12 are on the same plane. The center posts 62 of the two E-shaped iron cores 6 are in plug-in fit with the winding framework 4, and are abutted in the cavity of the winding framework 4, so that the electromagnetic induction efficiency is improved, and the magnetic leakage is reduced.

An insulating shell 9 is fixedly connected to the frame body 1 coaxially with the winding frame 4, and the primary coil 7 and the secondary coil 8 are separated and insulated by the insulating shell 9. Insulating casing 9 is tubular structure, and its length direction's cross sectional shape is the same with winding skeleton 4 length direction's cross sectional shape, and insulating casing 9 fixed connection is between winding skeleton 4 and first logical groove 11, forms the groove that supplies primary coil 7 to peg graft between insulating casing 9 and the winding skeleton 4, and secondary coil 8 twines the surface of keeping away from winding skeleton 4 on insulating casing 9 for primary coil 7 and the coaxial distribution of secondary coil 8, thereby reduced the volume of transformer. Both ends of the insulating shell 9 and the winding framework 4 in the length direction are semicircular, when the coil is wound on the insulating shell, the bending angle of the coil is gradually changed, and the phenomenon that the lead of the coil is damaged due to the sudden change of the bending angle is avoided, so that the electromagnetic induction effect is influenced.

The winding framework 4 is far away from the limiting plate 5 fixedly connected to the surface of the frame body 1, and the limiting plate 5 is used for positioning the E-shaped iron core 6, so that one E-shaped iron core 6 is accurately butted with the other E-shaped iron core 6 inserted into the frame body 1. The limiting plate 5 comprises a first plate body 51 and a second plate body 52, the first plate body 51 is rectangular, the length direction of the first plate body is the same as that of the rack body 1, the width of the first plate body is equal to that of the cores 61 of the E-shaped iron core 6, and the first plate body 51 is in inserted fit with the cores 61; the first plate 51 has a plate slot 511 formed in the middle thereof in the longitudinal direction, and the plate slot 511 is communicated with the second through-slot 12, has the same shape as the second through-slot 12, and is fitted to the center pillar 62 of the E-shaped core 6. The second plate 52 is rectangular, the end surfaces of the first plate 51 in the length direction are fixedly connected with the second plate 52, and the length direction of the second plate 52 is in the same plane as the length direction of the first plate 51 and perpendicular to each other. The second plate 52 covers the primary coil 7 and the secondary coil 8, so that the primary coil 7 and the secondary coil 8 are isolated from the external environment, and the influence of the external magnetic field on the primary coil 7 and the secondary coil 8 is reduced.

The equal a plurality of pins 3 of the equal fixedly connected with in frame body 1 length direction's both ends, pin 3 are arranged in the wire of the different turns that come out in the coil fixed with different pin 3, and operating personnel can be directly through connecting different pin 3 according to actual need's voltage, can accomplish the operation of adjustment voltage. The lead 3 includes an extension 31 directly fixed to the frame body 1, and a connection portion 32 fixed to the extension 31, and a length direction of the connection portion 32 is perpendicular to a plane in which the length direction of the extension 31 is located. Because the transformer of this application is arranged in the TV set, and the transformer passes through pin 3 and is connected with the circuit board, and the length direction of connecting portion 32 is perpendicular with the plane of circuit board place to make the connection of transformer and circuit board more stable.

The installation process of the small-sized transformer for the television set in the embodiment of the application is as follows: an assembler firstly winds the primary coil 7 in a groove formed between the winding frame 4 and the insulating shell 9, then winds the secondary coil 8 on the surface of the insulating shell 9 far away from the winding frame 4, and then coats insulating glue on the surface of the secondary coil 8 contacting with the outside to isolate the secondary coil 8 from the outside. Then, the lead of the coil is separated by the isolation groove 2 and welded on the pins 3 at the two ends of the frame body 1. Finally, inserting an E-shaped iron core 6 into the frame body 1, inserting a center pillar 62 of the E-shaped iron core 6 into the second through groove 12, and inserting the core body 61 into the first through groove 11; the other E-shaped iron core 6 is inserted from the direction of the limiting plate 5, the middle columns 62 of the two E-shaped iron cores 6 are abutted in the inner cavity of the winding framework 4, and the core bodies 61 of the two E-shaped iron cores are abutted between the limiting plate 5 and the frame body 1. This application is through fixedly connected with insulating casing 9 on frame body 1, separates primary coil 7 and secondary coil 8 through insulating casing 9 to it is insulating, make initial pole coil and the coaxial distribution of secondary coil 8, reduced the volume of transformer, make in its equipment that is applicable to needs small-size components and parts.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a small-size transformer for TV set, includes with E shape iron core grafting complex frame body (1), fixes winding skeleton (4) on frame body (1) and set up in primary coil (7) and secondary coil (8) on winding skeleton (4), its characterized in that: the axis direction perpendicular to of winding skeleton (4) put up body (1) length direction place plane, and fixedly connected with on putting up body (1) with coaxial insulating casing (9) of winding skeleton (4), primary coil (7) with secondary coil (8) are located the both sides of insulating casing (9) respectively.

2. The small transformer for tv set as claimed in claim 1, wherein: the frame body (1) is provided with a first through groove (11) which is in plug-in fit with the core body (61), and the frame body (1) is provided with a second through groove (12) which is in plug-in fit with the center pillar (62).

3. The small transformer for tv set as claimed in claim 1, wherein: a plurality of isolation grooves (2) used for isolating the wires are formed in the two ends of the frame body (1) in the length direction.

4. A small transformer for a television set according to claim 3, characterized in that: and a pin (3) fixedly connected to the frame body (1) and used for connecting a wire is arranged between the adjacent isolation grooves (2).

5. The small transformer for TV set as claimed in claim 4, wherein: the pin (3) comprises an extension part (31) and a connecting part (32), the extension part (31) and the connecting part (32) are integrally formed, the connecting part (32) is fixedly connected with the frame body (1), and the length direction of the connecting part (32) is perpendicular to the plane where the length direction of the extension part (31) is located.

6. The small transformer for tv set as claimed in claim 1, wherein: the two ends of the insulating shell (9) and the two ends of the winding framework (4) in the length direction are both semicircular.

7. The small transformer for tv set as claimed in claim 6, wherein: and the winding framework (4) is fixedly connected with a limiting plate (5) which is in plug-in fit with the iron core (6).

8. The small transformer for tv set as claimed in claim 7, wherein: the limiting plate (5) comprises a first plate body (51) and a second plate body (52) which cover the coils.