CN209747305U - ER type paster transformer - Google Patents

Abstract

The utility model discloses an ER type patch transformer, which comprises an ER type framework, wherein the ER type framework is provided with a winding post, and a magnetic core is assembled on the winding post; an induction coil is arranged on the wire winding column, the induction coil comprises a first coil, a second coil, a third coil, a fourth coil, a fifth coil and a sixth coil which are wound in parallel, the first coil, the second coil, the third coil, the fourth coil, the fifth coil and the sixth coil are sequentially arranged from inside to outside and are isolated by an insulating tape, and the outer peripheral side of the sixth coil is provided with the insulating tape; the first coil and the fourth coil are connected in series and are set as a first secondary winding of the transformer, the second coil and the fifth coil are connected in series and are set as a second secondary winding of the transformer, the third coil is set as a primary winding of the transformer, and the sixth coil is set as an auxiliary winding of the transformer; the coil turn ratio of the primary winding to the first secondary winding to the second secondary winding is 18: 18-22, and the coil turn ratio of the primary winding to the auxiliary winding is 18: 8-10.

Description

ER type paster transformer

Technical Field

The utility model belongs to the technical field of electronic components and parts and specifically relates to a ER type paster transformer.

Background

A transformer is a device for changing an ac voltage using the principle of electromagnetic induction, and generally includes an iron core, a primary coil, and a secondary coil. Transformers are often used in electronic circuits for voltage step-up and step-down, impedance matching, and safety isolation. With the development of miniaturization of electronic devices, surface-mounted small-sized patch transformers are increasingly used. The surface-mounted transformer generally adopts enameled wires with the diameter of about 0.05mm to wind coils, and then wire ends are welded with pins. Because the enameled wire is fine, the enameled wire can be damaged or broken in the processes of collision, extrusion and welding, so that the enameled wire is inconvenient to use and easily causes the rejection of the transformer; meanwhile, the existing transformer welding often rotates/twists the bracket to cause collision, extrusion and damage of the enameled wire and the pins; furthermore, electronic devices are increasingly becoming smaller, high-density surface-mount small transformers are becoming one direction of the miniaturization development of electronic devices, and the integration of miniaturized and high-performance chip transformers is becoming a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to the defect of existence among the above-mentioned prior art, provide a simple structure, small, can reduce that the enameled wire is impaired, reduce the transformer and scrap and use more convenient ER type paster transformer.

In order to solve the technical problem, the technical scheme adopted by the utility model is that the ER type patch transformer comprises an ER type framework, wherein the ER type framework is provided with a winding post, the winding post is provided with a through central shaft hole, magnetic cores which are symmetrically arranged up and down are nested and assembled on the winding post, and magnetic central columns of the two magnetic cores penetrate into the central shaft hole and are butted; the wire winding column is wound with an induction coil, the induction coil comprises a first coil and a second coil which are wound in parallel, a third coil, a fourth coil and a fifth coil which are wound in parallel and a sixth coil, the first coil and the second coil, the third coil, the fourth coil and the fifth coil and the sixth coil are sequentially arranged from inside to outside and are isolated from each other by an insulating tape, and the outer peripheral side of the sixth coil is also provided with the insulating tape; the first coil and the fourth coil are connected in series and set as a first secondary winding of the transformer, the second coil and the fifth coil are connected in series and set as a second secondary winding of the transformer, the first coil and the fourth coil of the first secondary winding and the second coil and the fifth coil of the second secondary winding are coils formed by winding a first fiber core with a plurality of strands of wire diameters of 0.1-0.15 mm, the third coil is set as a primary winding of the transformer, the wire diameter of the third coil is 0.17-0.20 mm, the sixth coil is set as an auxiliary winding of the transformer, and the wire diameter of the sixth coil is 0.10-0.15 mm; the coil turn ratio of the primary winding to the first secondary winding to the second secondary winding is 18: 18-22, and the coil turn ratio of the primary winding to the auxiliary winding is 18:8 to 10.

As a further elaboration of the above technical solution:

In the technical scheme, a primary end and a secondary end are arranged on two transverse sides of the ER-type framework, horizontally extending pins are arranged on the transverse sides of the primary end and the secondary end, the pins arranged on the primary end are sequentially arranged into a first pin, a second pin, a third pin and a fourth pin, the pins arranged on the secondary end are sequentially arranged into a fifth pin, a sixth pin, a seventh pin and an eighth pin, two ends of a third coil are respectively connected with the first pin and the fourth pin in a welding manner, and two ends of the sixth coil are respectively connected with the second pin and the third pin in a welding manner; and two ends of the first coil and the fourth coil which are connected in series are respectively welded with the sixth pin and the eighth pin, and two ends of the second coil and the fifth coil which are connected in series are respectively welded with the fifth pin and the seventh pin.

In the technical scheme, a groove is formed in the position where the two transverse sides of the ER-type skeleton are matched with the arrangement positions of the pins, and the groove is used for arranging and guiding the induction coil

In the technical scheme, the ER type skeleton is a bakelite skeleton, the magnetic cores are E-shaped magnetic cores, the two magnetic cores are fixedly connected through epoxy glue, and the two magnetic cores are further coated with high-temperature adhesive tapes.

In the technical scheme, a first coil and a fourth coil of a first secondary winding and a second coil and a fifth coil of a second secondary winding are wheat guy wires formed by winding two strands of copper wires with the wire diameter of 0.1mm, the third coil is a copper wire with the wire diameter of 0.17mm, the sixth coil is a copper wire with the wire diameter of 0.10mm, and the coil turn ratio of the primary winding to the first secondary winding to the second secondary winding is 1: 1; the coil turn ratio of the primary winding to the auxiliary winding is 9: 4.

In the technical scheme, the insulating adhesive tape is a Mylar adhesive tape, and the high-temperature adhesive tape is a PF-301 high-temperature adhesive tape.

Compared with the prior art, the utility model has the advantages that firstly, the pins of the framework are symmetrically arranged at the two sides of the fixed connection and are divided into the pins of the primary winding and the pins of the secondary winding, so that when the transformer is welded, the rotation of the framework can be reduced, the collision, extrusion and damage of the induction coil and the pins can be reduced, and meanwhile, the time for matching the pins during welding can be reduced; secondly, the induction coil extends to the pins along the grooves and is welded with the pins, the wire ends of the induction coil are not easy to collide, and the damage and fracture conditions of the induction coil are reduced, so that the quality of the transformer is ensured; thirdly, the ER-type framework is adopted, so that the size of the transformer can be effectively reduced.

Drawings

Fig. 1 is a schematic diagram of a transformer winding structure of the present invention;

Fig. 2 is a perspective view of the transformer of the present invention;

Fig. 3 is an exploded view of the transformer of the present invention;

Fig. 4 is a coil level distribution diagram of the winding of the transformer of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

the embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Fig. 1-4 illustrate an embodiment of the transformer of the present invention, which is used in electronic circuits for voltage step-up and step-down, impedance matching, and safety isolation. Referring to the accompanying drawings 1-4, an ER type patch transformer comprises an ER type framework 001, wherein the ER type framework 001 is a bakelite framework, the ER type framework 001 is provided with a winding post 101, the winding post 101 is provided with a through central shaft hole 102, the top end and the bottom end of the winding post 101 are respectively embedded and assembled with magnetic cores 002 which are symmetrically arranged up and down, the magnetic cores 002 are E-shaped magnetic cores, magnetic central columns 201 of the two magnetic cores 002 penetrate into the central shaft hole 102 and are in butt joint, the two magnetic cores 002 are fixedly connected through epoxy glue, and the two magnetic cores 002 are further coated with high-temperature adhesive tapes (not shown in the drawings); an induction coil is wound on the wire winding column 101, the induction coil comprises a first coil 003, a second coil 004, a third coil 005, a fourth coil 006, a fifth coil 007 and a sixth coil 008 which are wound in parallel, the first coil 003, the second coil 004, the third coil 005, the fourth coil 006, the fifth coil 007 and the sixth coil 008 are sequentially arranged from inside to outside and are isolated from each other through an insulating tape 009, and the insulating tape 009 is also arranged on the outer peripheral side of the sixth coil 008; in this embodiment, the first coil 003 and the fourth coil 006 are connected in series and are set as a first secondary winding N2 of the transformer, and the second coil 004 and the fifth coil 007 are connected in series and are set as a second secondary winding N2 'of the transformer, it should be noted that, in practice, the first coil 003 and the fourth coil 006, the second coil 004 and the fifth coil 007 are all one whole wire, except for the winding positions of the first coil 003/the second coil 004 and the second coil 006/the fifth coil 007, the third coil 005 is spaced between the first coil 003/the second coil 004 and the fourth coil 006/the fifth coil 007, and meanwhile, in this embodiment, the first coil 003 and the fourth coil 006 of the first secondary winding N2, and the second coil 004 and the fifth coil 007 of the multiple strands of the second secondary winding N2' are all coils formed by a first core wire having a wire diameter of 0.1 to 0.15mm, the third coil 005 is set as a primary winding N1 of the transformer, the wire diameter of the third coil 005 is 0.17-0.20 mm, the sixth coil 008 is set as an auxiliary winding N3 of the transformer, and the wire diameter of the sixth coil 008 is 0.10-0.15 mm; the coil turn ratio of the primary winding N1 to the first secondary winding N2 to the second secondary winding N2' is 18: 18-22, and the coil turn ratio of the primary winding N1 to the auxiliary winding N3 is 18: 8-10; in this embodiment, a primary end 010 and a secondary end 011 are disposed on two lateral sides of the ER-type skeleton 001, and horizontally extending pins 012 are disposed on lateral sides of the primary end 010 and the secondary end 011, the pins disposed on the primary end are sequentially set as a first pin 121, a second pin 122, a third pin 123 and a fourth pin 124, the pin 012 disposed on the secondary end 011 is sequentially set as a fifth pin 125, a sixth pin 126, a seventh pin 127 and an eighth pin 128, two ends of the third coil 005 are respectively connected to the first pin 121 and the fourth pin 124 by welding, and two ends of the sixth coil 008 are respectively connected to the second pin 122 and the third pin 123 by welding; two ends of the first coil 003 and the fourth coil 006 which are connected in series are respectively welded with the sixth pin 126 and the eighth pin 128, and two ends of the second coil 004 and the fifth coil 007 which are connected in series are respectively welded with the fifth pin 125 and the seventh pin 127; in this embodiment, a groove 013 is formed at the position where each pin 012 is matched with each of the two lateral sides of the ER-type skeleton 001, the groove 013 is used for arranging and guiding the induction coil, and through the groove 013, the head of the induction coil is not easily collided, so that the damage and breakage of the induction coil are reduced; preferably, the first coil 003 and the fourth coil 006 of the first secondary winding N2 and the second coil 004 and the fifth coil 007 of the second secondary winding N2 'are both mylar wire formed by winding two strands of copper wires with the wire diameter of 0.1mm, the third coil 005 is a copper wire with the wire diameter of 0.17mm, the sixth coil 008 is a copper wire with the wire diameter of 0.10mm, and the coil turn ratio of the primary winding N1 to the first secondary winding N2 to the second secondary winding N2' is 1: 1; the coil turn ratio of the primary winding N1 to the auxiliary winding N3 is 9: 4; the insulating adhesive tape 009 is a Mylar adhesive tape, and the high-temperature adhesive tape is a PF-301 high-temperature adhesive tape.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims (6)

1. An ER type patch transformer is characterized by comprising an ER type framework, wherein the ER type framework is provided with a winding post, the winding post is provided with a through central shaft hole, magnetic cores which are symmetrically arranged up and down are embedded and assembled on the winding post, and the magnetic central columns of the two magnetic cores penetrate into the central shaft hole and are butted with each other; the wire winding column is wound with an induction coil, the induction coil comprises a first coil and a second coil which are wound in parallel, a third coil, a fourth coil and a fifth coil which are wound in parallel and a sixth coil, the first coil and the second coil, the third coil, the fourth coil and the fifth coil and the sixth coil are sequentially arranged from inside to outside and are isolated from each other by an insulating tape, and the outer peripheral side of the sixth coil is also provided with the insulating tape; the first coil and the fourth coil are connected in series and set as a first secondary winding of the transformer, the second coil and the fifth coil are connected in series and set as a second secondary winding of the transformer, the first coil and the fourth coil of the first secondary winding and the second coil and the fifth coil of the second secondary winding are coils formed by winding a first fiber core with a plurality of strands of wire diameters of 0.1-0.15 mm, the third coil is set as a primary winding of the transformer, the wire diameter of the third coil is 0.17-0.20 mm, the sixth coil is set as an auxiliary winding of the transformer, and the wire diameter of the sixth coil is 0.10-0.15 mm; the coil turn ratio of the primary winding to the first secondary winding to the second secondary winding is 18: 18-22, and the coil turn ratio of the primary winding to the auxiliary winding is 18:8 to 10.

2. The ER type patch transformer according to claim 1, wherein the ER type bobbin is provided with a primary end and a secondary end on two lateral sides, and horizontally extending pins are provided on the lateral sides of the primary end and the secondary end, the pins provided on the primary end are sequentially provided as a first pin, a second pin, a third pin and a fourth pin, the pins provided on the secondary end are sequentially provided as a fifth pin, a sixth pin, a seventh pin and an eighth pin, two ends of the third coil are respectively connected with the first pin and the fourth pin in a welding manner, and two ends of the sixth coil are respectively connected with the second pin and the third pin in a welding manner; and two ends of the first coil and the fourth coil which are connected in series are respectively welded with the sixth pin and the eighth pin, and two ends of the second coil and the fifth coil which are connected in series are respectively welded with the fifth pin and the seventh pin.

3. The ER type patch transformer according to claim 2, wherein a groove is formed at the position where the two lateral sides of the ER type framework are matched with each pin, and the groove is used for arranging and guiding the induction coil.

4. the ER type patch transformer according to claim 3, wherein the ER type skeleton is a bakelite skeleton, the magnetic cores are E-shaped magnetic cores, the two magnetic cores are fixedly connected through epoxy glue, and the two magnetic cores are further coated with high-temperature adhesive tapes.

5. the ER type patch transformer according to claim 4, wherein the first coil and the fourth coil of the first secondary winding and the second coil and the fifth coil of the second secondary winding are both MAY wires formed by two strands of copper wires with the wire diameter of 0.1mm, the third coil is a copper wire with the wire diameter of 0.17mm, the sixth coil is a copper wire with the wire diameter of 0.10mm, and the coil turn ratio of the primary winding and the first secondary winding and the second secondary winding is 1: 1; the coil turn ratio of the primary winding to the auxiliary winding is 9: 4.

6. The ER type patch transformer according to claim 5, wherein the insulating tape is Mylar tape, and the high temperature tape is PF-301 high temperature tape.