CN213844986U

CN213844986U - PQ type transformer with reduced height

Info

Publication number: CN213844986U
Application number: CN202022700642.6U
Authority: CN
Inventors: 陈钢强; 刘晓斐; 钱丹; 钱凯耀
Original assignee: Yunnan Fengchangxin Electronic Co Ltd
Current assignee: Yunnan Fengchangxin Electronic Co Ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-30
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a PQ type transformer of height-reducing, including transformer skeleton, transformer skeleton is including being equipped with tube-shape portion, the upper and lower terminal surface of tube-shape portion is equipped with two bosss along circumference interval 180 degrees, two bosss extend respectively to the outside and are provided with primary PIN portion and secondary PIN portion, the primary lead welding that primary winding draws forth is on primary PIN, the secondary lead welding that secondary winding draws forth is on secondary winding, the lateral wall of primary PIN portion is equipped with the primary line groove of crossing that a row supplies primary lead to pass through, the lateral wall of secondary PIN portion is equipped with the secondary line groove that a row supplies secondary lead to pass through, the upside of primary PIN portion corresponds primary line groove and is equipped with primary recess, a secondary line groove is crossed to the upside of secondary PIN portion, be used for with the embedding of primary lead portion, the upside of secondary PIN portion corresponds secondary line groove and is equipped with secondary recess, a secondary lead portion embedding. The utility model discloses do not influence the wire winding space, can reduce the wire winding groove, reduce the finished product height.

Description

PQ type transformer with reduced height

Technical Field

The utility model relates to a transformer especially relates to PQ type transformer.

Background

At present, the development direction of transformers is to reduce the size, reduce the cost, miniaturize and thin. After the pins of the common transformer are coiled, tinned and welded, welding points are high, the installation height of a product is influenced, and in addition, because the product is required to be miniaturized, the condition of insufficient safety distance exists, high-voltage breakdown is easily caused, so that property and personal safety cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a PQ type transformer that reduces height is provided, when guaranteeing product security performance and accord with the ann rule requirement, reduces the product height.

In order to solve the technical problem, the utility model adopts the following technical scheme: a height-reduced PQ-type transformer comprises a transformer framework, a magnetic core and a coil, wherein the magnetic core and the coil are installed on the transformer framework, the transformer framework comprises a cylindrical part provided with a primary winding groove and a secondary winding groove, a separation baffle is arranged between the primary winding groove and the secondary winding groove of the cylindrical part, two bosses are arranged on the upper end surface and the lower end surface of the cylindrical part at intervals of 180 degrees along the circumferential direction, a magnetic core positioning groove is formed between the two bosses, a primary PIN part and a secondary PIN part are respectively arranged on the outer side of the two bosses at the bottom of the transformer framework in an extending mode, the primary PIN part is arranged on the bottom surface of the primary PIN part, a secondary PIN is arranged on the bottom surface of the secondary PIN part, the coil comprises a primary winding and a secondary winding, a primary lead led out by the primary winding is welded on the primary PIN, a secondary lead led out by the secondary winding is welded on the secondary winding, and a row of primary wire passing grooves for the primary lead to pass through are arranged on the outer side wall of the primary PIN part, the lateral wall of secondary PIN portion is equipped with a row and supplies the secondary of secondary lead wire through to cross the line groove, the upside of primary PIN portion corresponds primary and crosses the line groove and be equipped with primary recess for partly imbed primary lead wire, the upside of secondary PIN portion corresponds secondary and crosses the line groove and be equipped with secondary recess, be used for partly imbed secondary lead wire.

Preferably, the primary winding and the secondary winding are wound by three layers of insulated wires.

Preferably, elementary PIN portion and secondary PIN portion are all from the horizontal protrusion of transformer skeleton side and elementary PIN is less than the distance that secondary PIN corresponds the side apart from transformer skeleton corresponding side.

Preferably, the distance between the secondary PIN and the corresponding side face of the transformer framework is 8 mm.

The utility model discloses the side all is equipped with the recess on elementary wire winding portion and secondary wire winding portion, with lead wire embedding recess in, does not influence the wire winding space, can reduce the wire winding groove, reduces the finished product height.

Present PQ type transformer, skeleton insulation distance are less, need increase the magnetic core gum and just can satisfy the ann rule requirement, the utility model discloses in, elementary PIN portion and secondary PIN portion are all from horizontal protrusion in the side of the transformer skeleton and elementary PIN apart from the distance that the transformer skeleton corresponds the side be less than the distance that secondary PIN apart from the transformer skeleton corresponds the side, have increased the distance of secondary PIN and elementary PIN, have increased safe distance to satisfy higher ann rule distance requirement, and need not the magnetic core gum.

The empty sticky tape of current PQ type transformer user end increases insulation distance, the utility model discloses in, adopt the three-layer insulated wire coiling coil that accords with ann's rule, need not the empty sticky tape of user end, just can reduce the wire winding groove, reduce the finished product height.

The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

fig. 1 is a schematic plan view of a conventional PQ-type transformer bobbin.

Fig. 2 is a schematic side view of a conventional PQ-type transformer.

Fig. 3 is a schematic bottom view of a conventional PQ-type transformer.

Fig. 4 is a schematic plan view of a PQ-type transformer bobbin according to the present invention.

Fig. 5 is a schematic side view of a PQ type transformer according to the present invention.

Fig. 6 is a schematic bottom view of a PQ type transformer according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 4 to 6, a PQ type transformer with reduced height includes a bobbin 1, a core and a coil 2 mounted to the bobbin, the transformer bobbin includes a cylindrical portion provided with a primary winding slot and a secondary winding slot, the cylindrical portion being provided with a separation baffle between the primary winding slot and the secondary winding slot, two bosses are arranged on the upper end surface and the lower end surface of the cylindrical part at intervals of 180 degrees along the circumferential direction, a magnetic core positioning groove is formed between the two bosses, wherein, PIN parts 11 are respectively extended outwards from the two bosses at the bottom of the transformer framework, namely a primary PIN part and a secondary PIN part, the primary PIN part being provided with a primary PIN on the bottom surface, the bottom surface of the secondary PIN part is provided with a secondary PIN, the coil comprises a primary winding and a secondary winding, and a primary lead wire led out from the primary winding is welded on the primary PIN, and a secondary lead wire led out from the secondary winding is welded on the secondary winding.

The outer side wall of the PIN part is provided with a wire passing groove 12. The primary PIN part is provided with a row of primary wire passing grooves for primary leads to pass through, and the outer side wall of the secondary PIN part is provided with a row of secondary wire passing grooves for secondary leads to pass through.

Further, the upper side surface of the PIN part is provided with a groove 13 corresponding to the wire passing groove. The upper side surface of the primary PIN part is provided with a primary groove corresponding to the primary wire passing groove and used for embedding the primary lead part, and the upper side surface of the secondary PIN part is provided with a secondary groove corresponding to the secondary wire passing groove and used for embedding the secondary lead part. Because with lead wire embedding recess in, do not influence the wire winding space, can reduce wire winding groove, reduce finished product height.

The existing PQ type transformer uses an end-void tape to increase the insulation distance. Referring to fig. 5, in the embodiment of the present invention, the primary winding and the secondary winding are formed by winding three layers of insulated wires. The winding groove can be reduced without using an end-empty adhesive tape, and the height of a finished product is reduced.

The existing PQ transformer has smaller framework insulation distance, and the safety requirements can be met only by adding magnetic core gum. Referring to fig. 6, in the embodiment of the present invention, the primary PIN portion and the secondary PIN portion are both horizontally protruded from the side of the transformer bobbin, and the distance from the primary PIN to the corresponding side of the transformer bobbin is less than the distance from the secondary PIN to the corresponding side of the transformer bobbin. Specifically, the distance between the secondary PIN and the corresponding side face of the transformer framework is 8 mm. Therefore, the distance between the secondary PIN and the primary PIN is increased, and the safety distance is increased, so that the requirement of higher safety distance is met, and the magnetic core back glue is not needed.

In addition, the magnetic core is E type magnetic core, E type magnetic core includes the bottom plate of rectangle, locate the center pillar in the middle of the bottom plate perpendicularly, locate the side post of bottom plate length both sides perpendicularly, and wherein bottom plate width both sides face is equipped with V-arrangement groove and magnetic core constant head tank lateral wall V-arrangement portion and forms the cooperation.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. A height-reduced PQ-type transformer comprises a transformer framework, a magnetic core and a coil, wherein the magnetic core and the coil are installed on the transformer framework, the transformer framework comprises a cylindrical part provided with a primary winding groove and a secondary winding groove, a separation baffle is arranged between the primary winding groove and the secondary winding groove of the cylindrical part, two bosses are arranged on the upper end surface and the lower end surface of the cylindrical part at intervals of 180 degrees along the circumferential direction, a magnetic core positioning groove is formed between the two bosses, a primary PIN part and a secondary PIN part are respectively arranged on the outer side of the two bosses at the bottom of the transformer framework in an extending mode, the primary PIN part is arranged on the bottom surface of the primary PIN part, a secondary PIN is arranged on the bottom surface of the secondary PIN part, the coil comprises a primary winding and a secondary winding, a primary lead led out by the primary winding is welded on the primary PIN, a secondary lead led out by the secondary winding is welded on the secondary winding, and a row of primary wire passing grooves for the primary lead to pass through are arranged on the outer side wall of the primary PIN part, the lateral wall of secondary PIN portion is equipped with a row and supplies the secondary wire passing groove that secondary lead passed through, its characterized in that: the upper side of the primary PIN part is provided with a primary groove corresponding to the primary wire passing groove and used for embedding the primary lead part, and the upper side of the secondary PIN part is provided with a secondary groove corresponding to the secondary wire passing groove and used for embedding the secondary lead part.

2. The PQ-type transformer with reduced height according to claim 1, wherein: the primary winding and the secondary winding are formed by winding three layers of insulated wires.

3. The PQ-type transformer with reduced height according to claim 1, wherein: primary PIN portion and secondary PIN portion are all from transformer skeleton side level protrusion and primary PIN is less than secondary PIN apart from the distance that transformer skeleton corresponds the side to the distance that transformer skeleton corresponds the side.

4. The PQ-type transformer with reduced height according to claim 3, wherein: and the distance between the secondary PIN and the corresponding side face of the transformer framework is 8 mm.