CN203277061U

CN203277061U - Horizontal type high-frequency transformer

Info

Publication number: CN203277061U
Application number: CN 201320289776
Authority: CN
Inventors: 张卫明
Original assignee: Xiamen Xinsenhai Electronics Co Ltd
Current assignee: Something High Electric Xiamen Co inc
Priority date: 2013-05-24
Filing date: 2013-05-24
Publication date: 2013-11-06
Anticipated expiration: 2023-05-24

Abstract

The utility model discloses a horizontal type high-frequency transformer. The horizontal type high-frequency transformer comprises a framework, a winding and a magnetic core, wherein the winding and the magnetic core are arranged on the framework, a primary lateral fixing pin and a secondary lateral fixing pin are fixed to the framework, the secondary lateral fixing pin is fixed to a secondary lateral fixing frame of the framework, and the magnetic core is perpendicular to the primary lateral fixing pin and the secondary lateral fixing pin. The horizontal type high-frequency transformer is characterized in that a plastic protrusion is arranged at the inner side, located at the secondary lateral fixing pin, of the secondary lateral fixing frame, the secondary lateral fixing frame is provided with a wire outlet groove which is located at the outer side of the secondary lateral fixing pin, and a secondary circuit lead-out wire of the winding passes across the wire outlet groove from the outer side and then is punctured on the secondary lateral fixing pin in a hanging mode. Through the plastic protrusion and the lead-out wire led out from the outer side, the safety distance of the transformer can be increased.

Description

The horizontal high frequency transformer

Technical field

The utility model relates to a kind of high frequency transformer, and espespecially a kind of horizontal high frequency transformer is applicable to switching power circuit.

Background technology

The switching power circuit of AC-DC all has high frequency transformer to do isolation output, and high frequency transformer has primary circuit (primary circuit) and secondary circuit (secondary circuit) spacer assembly.Primary circuit is the circuit that directly is connected with the AC network power supply, is the circuit that Danger Electric shock risk is arranged; Secondary circuit directly is not connected with primary circuit, is safe low voltage circuit.

For the danger that prevents from shocking by electricity, various international standards or national standard (as IEC60950, IEC61558, IEC60335, UL60950, UL1310, GB4943, GB8898 etc.) have the primary circuit of pair high frequency transformer and electric clearance and the creepage distance of secondary circuit that detailed requirement is arranged.Wherein: electric clearance (clearance) is between two conductive parts or the shortest space length that records between conductive parts and equipment interface; Creepage distance (creepage distance) be between two conductive parts that record along insulating surface or conductive parts and equipment protection interface between shortest path.And electric clearance and creepage distance are referred to as safe distance.For example: if the high frequency transformer operating voltage of general circuit less than 540V DC the time, if to relax the DC as 600V, electric clearance and the creepage distance that can calculate primary circuit and secondary circuit are respectively: 5.0mm and 6.3mm.2012, GB4943 and GB8898 that China carries out new edition had higher requirement to electric clearance.

In order to increase electric clearance or creepage distance, tradition has following method:

1. directly two conductive parts are pulled open to increase electric clearance, but adopt this method, the essential size that strengthens transformer framework not only increases material cost, but also needs to change the structure that circuit board coordinates with it, therefore will raise the cost.

2. use long three layer insulation wire to draw the wire of secondary circuit, zoom out distance (as shown in Figure 1) is installed, but this kind operating type, the difficult installation, the expense of taking a lot of work material, and need to change the structure that circuit board coordinates with it, can increase cost.Label list in Fig. 1 is shown: A1 is that primary circuit winding, A2 are that primary circuit locking pin, A3 are that secondary circuit winding, A4 are that secondary circuit output lead, the A6 that draws is that circuit board, a are safe distance for secondary circuit locking pin, the A5 that removes.

3. a mode that use to be wound around isolation shelves wall adhesive tape increases electric clearance and creepage distance preventing from puncturing (as Fig. 2), but operation like this, coiling is complicated, and the expense of taking a lot of work is equally expected, production cost is increased.Label list in Fig. 2 is shown: B1 is that primary circuit winding, B2 are that primary circuit locking pin, B3 are that secondary circuit winding, B4 are that secondary circuit locking pin, B5 are that barricade insulating tape, B6 are that circuit board, b are safe distance.

As shown in Fig. 3,4, for the horizontal type transformer of the magnetic core after installing perpendicular to stitch (locking pin) direction, line outlet groove 13 on the secondary side fixed mount 12 of existing horizontal type transformer skeleton 1 is deep into fixed mount inside, with concordant being arranged side by side of secondary side locking pin 3 on secondary side fixed mount 12, after processing, secondary circuit lead-out wire 51 is hung bundle to this locking pin 3 from the inboard like this, therefore this side is hung binding and locking pin 3 is close to winding 5, its distance also not safe distance requirement.Especially adding man-hour, easily making the lead-out wire broken skin, safe distance is reduced.

The utility model content

Technical problem to be solved in the utility model be to provide a kind of increase safe distance the horizontal high frequency transformer.

For solving the problems of the technologies described above, technical solution of the present utility model is:

A kind of horizontal high frequency transformer, comprise skeleton and be arranged on winding and magnetic core on this skeleton, be fixed with primary side locking pin and secondary side locking pin on this skeleton, this secondary side locking pin is fixed on secondary side fixed mount on this skeleton, and described magnetic core is perpendicular to this primary side locking pin and secondary side locking pin; The inboard that is positioned at described secondary side locking pin on described secondary side fixed mount is provided with the plastics projection one, and be provided with line outlet groove on this secondary side fixed mount, this line outlet groove is positioned at the outside of described secondary side locking pin, and the secondary circuit lead-out wire of described winding is walked around this line outlet groove and hung bundle to described secondary side locking pin again from the outside.

The both sides that differ from the opposite side that is positioned at described primary side locking pin and secondary side locking pin on described skeleton and be positioned at described winding are provided with barricade, on this barricade, groove are set, and described lead-out wire is arranged in this groove.

Be provided with an insulating trip between described lead-out wire and described magnetic core.

After adopting such scheme, the utlity model has following advantage:

1, the utility model by set up the plastics projection between described secondary side locking pin and winding, increases safe distance with this;

2, be arranged on the outside of secondary side locking pin due to the line outlet groove of secondary side, the outlet of secondary circuit is the inboard between winding space and secondary circuit locking pin pin not, therefore increased the length of secondary circuit output lead, can avoid reducing because processing causes the safe distance that secondary circuit insulated wire broken skin causes;

3, isolate with insulating trip between secondary side lead-out wire and magnetic core, thereby can increase safe distance;

3, isolate adhesive tape and fly to draw the secondary circuit wire owing to no longer needing to be wound around, so just can reduce the operation that is wound around isolation and flies to draw the expense of the taking a lot of work material of wire installation, and the change of this structure, the overall dimensions of transformer framework is that spatial variations is little, the distance of both sides pin does not change, more can not change former transformer body winding structure, therefore not need the fit structure of modification circuits plate yet, thereby reduced cost.

Description of drawings

Fig. 1 is the schematic diagram that existing high frequency transformer increases safe distance mode one;

Fig. 2 is the schematic diagram that existing high frequency transformer increases safe distance mode two;

Fig. 3 is the structural representation one of existing horizontal high frequency transformer;

Fig. 4 is the structural representation two of existing horizontal high frequency transformer;

Fig. 5 is structural representation one of the present utility model;

Fig. 6 is structural representation two of the present utility model;

Fig. 7 is the utility model safe distance schematic diagram.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

What the utility model disclosed is a kind of horizontal high frequency transformer, as Fig. 5 and shown in Figure 7, is preferred embodiment of the present utility model.Described transformer comprises skeleton 1 and is arranged on winding 5 and magnetic core 4 on this skeleton 1, be fixed with primary side locking pin 2 and secondary side locking pin 3 on this skeleton, this secondary side locking pin 3 is fixed on secondary side fixed mount 12 on this skeleton 1, and described magnetic core 4 is perpendicular to this primary side locking pin 2 and secondary side locking pin 3.

Key of the present utility model is: the inboard that is positioned at described secondary side locking pin 2 on described secondary side fixed mount 12 is provided with plastics projection 11 one, and be provided with line outlet groove 13 on this secondary side fixed mount 12, this line outlet groove 13 is positioned at the outside of described secondary side locking pin 3.

Adding man-hour, the secondary circuit lead-out wire 51 of winding 5 is walked around this line outlet groove 13 from the outside, hang and prick to described secondary side locking pin 3, can increase like this safe distance of lead-out wire 51, the distance that increases secondary side locking pin 3 and winding 5 increases safe distance.Safe distance d of the present utility model as shown in Figure 7.

Further; the both sides that differ from the opposite side that is positioned at described primary side locking pin 2 and secondary side locking pin 3 on described skeleton 1 and be positioned at described winding 5 also are provided with barricade 14 usually; for fixing described lead-out wire 51; on described barricade 14, one or two groove 15 can be set, will be arranged on from the lead-out wire 51 that winding 5 is drawn in this groove 15.

In addition, due to described lead-out wire 51 from side hang to prick on described secondary side locking pin 3 the time, will can an insulating trip 6 be set between this lead-out wire 51 and described magnetic core 4 through described magnetic core 4, increase safe distance with this.

The above, it is only preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, thus variation or the modification in every case done according to claim of the present utility model and specification, within all should belonging to the scope that the utility model patent contains.

Claims

1. horizontal high frequency transformer, comprise skeleton and be arranged on winding and magnetic core on this skeleton, be fixed with primary side locking pin and secondary side locking pin on this skeleton, this secondary side locking pin is fixed on secondary side fixed mount on this skeleton, and described magnetic core is perpendicular to this primary side locking pin and secondary side locking pin; It is characterized in that: the inboard that is positioned at described secondary side locking pin on described secondary side fixed mount is provided with the plastics projection one, and be provided with line outlet groove on this secondary side fixed mount, this line outlet groove is positioned at the outside of described secondary side locking pin, and the secondary circuit lead-out wire of described winding is walked around this line outlet groove and hung bundle to described secondary side locking pin again from the outside.

2. horizontal high frequency transformer according to claim 1, it is characterized in that: the both sides that differ from the opposite side that is positioned at described primary side locking pin and secondary side locking pin on described skeleton and be positioned at described winding are provided with barricade, on this barricade, groove is set, described lead-out wire is arranged in this groove.

3. horizontal high frequency transformer according to claim 1 and 2, is characterized in that: be provided with an insulating trip between described lead-out wire and described magnetic core.