CN202758717U

CN202758717U - Transformer framework

Info

Publication number: CN202758717U
Application number: CN 201220325043
Authority: CN
Inventors: 杨声斌
Original assignee: Mornsun Guangzhou Science and Technology Ltd
Current assignee: Mornsun Guangzhou Science and Technology Ltd
Priority date: 2012-07-05
Filing date: 2012-07-05
Publication date: 2013-02-27
Anticipated expiration: 2022-07-05

Abstract

The utility model discloses a transformer framework. The transformer framework comprises two base seats (2 and 3) and a wire winding support (1), wherein the wire winding support is arranged between the two base seats (2 and 3), and metal lead feet (81 and 82) used for being connected with an outer circuit are respectively embedded on the two base seats (2 and 3). The transformer framework is characterized in that the upper surface of at least one base seat in the two base seats (2 and 3) is provided with convex tables (5) and the convex tables (5) are arranged in a parallel mode along the distributed direction of the metal lead feet on the corresponding base seats. The transformer framework enables electric clearance and creep distance between electric conduction parts of a transformer to be enlarged without enlarging sharply the base seats of the transformer framework, thereby being capable of achieving the demand of the transformer safety distance without being wrapped by adhesive tapes for a magnetic core additionally. Besides, the transformer framework saves production and material cost of the transformer and raises the reliability of the transformer.

Description

A kind of transformer framework

Technical field

The utility model relates to a kind of transformer member, specifically a kind of transformer framework.

Background technology

At present, the miniature transformer that in the AC-DC of micropower power module, uses, in order to satisfy the requirement of safety distance between power module primary circuit and the secondary circuit, need to increase electric clearance and creepage distance between primary circuit and the secondary circuit, traditional method is the distance that directly increases between primary circuit and the secondary circuit conductive parts, strengthens the size of transformer framework.

Show transformer framework structure of the prior art such as Fig. 1, comprise two

pedestals

2,3 and be arranged on drum stand 1 between two

pedestals

2,3, be embedded with respectively on two

pedestals

2,3 for the metal pins 81 and 82 that connects external circuit, the metal pins 81 that is inlaid on pedestal 2 sides is used for connecting primary circuit, the metal pins 82 that is inlaid on pedestal 3 sides is used for the connecting secondary circuit, and two

pedestals

2,3 bottom all have wire casing 71.

For electric clearance and the creepage distance that increases conductive parts between primary circuit and the secondary circuit, usually need to increase considerably the size of

pedestal

2 or 3, perhaps adopt the fly line mode, namely use long three layer insulation wire to draw direct wire as secondary circuit by metal pins 82 and wire casing 71, also utilize simultaneously insulating tape to coat the transformer of magnetic core, coiling and skeleton assembling.But, significantly increase pedestal and need to change the structure that circuit board cooperates with it, use and can bring certain cost than long lead and insulating tape; And, need extra operation, such as welding lead, twine insulating tape etc., the reliability of product there is certain impact, increased simultaneously the production cost of transformer.

The utility model content

The purpose of this utility model provides a kind of transformer framework, can increase electric clearance and creepage distance between the transformer conductive parts.

The purpose of this utility model is achieved through the following technical measures:

A kind of transformer framework comprises two pedestals and is arranged on two drum stands between the pedestal, is embedded with respectively for the metal pins that connects external circuit on two pedestals, and the upper surface of at least one pedestal is provided with boss in described two pedestals; Described boss be arranged in parallel along the orientation of the metal pins on the corresponding pedestal.

The outer edge of boss described in the utility model is mutually concordant with the metal pins setting-in face of corresponding pedestal.

Better be assembled into together for the ease of magnetic core and the line bag that winds, the top of described boss is provided with the chamfering towards drum stand.

The cross section of boss described in the utility model is trapezoidal faces, and the hypotenuse of described trapezoidal faces is towards drum stand.

The situation that has conductive parts for the lateral location of tackling transformer, the air gap and the creepage distance that guarantee these conductive parts and transformer are enough large, the upper surface of at least one pedestal is provided with baffle plate in described two pedestals, and described baffle plate links to each other with boss is vertical.

Baffle plate described in the utility model is mutually concordant with the outer edge of corresponding pedestal.

The bottom of two pedestals described in the utility model all has wire casing.

Compared with prior art, transformer framework of the present utility model has following beneficial effect:

Transformer framework of the present utility model arranges boss at the end face of two pedestals, has increased between magnetic core of transformer and the primary circuit conductive parts, electric clearance and creepage distance between magnetic core of transformer and the secondary circuit conductive parts; The utility model also can arrange baffle plate at the end face of two pedestals, air gap and the creepage distance of having guaranteed the conductive parts of transformer side position and transformer are enough large, therefore, the utility model need not significantly to increase the pedestal of transformer framework, can reach transformer safety required distance, do not need that magnetic core is carried out extra adhesive tape and coat, production and the material cost of having saved transformer have improved the reliability of transformer.

Description of drawings

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

Fig. 1 is the structural representation of transformer framework in the prior art;

Fig. 2 is the structural representation of the transformer framework of the utility model preferred embodiment.

Embodiment

Fig. 2 shows preferred embodiment of the present utility model, the transformer framework of the present embodiment, comprise two

pedestals

2,3 and be arranged on drum stand 1 between two

pedestals

2,3, pedestal 2 be embedded with respectively on pedestal is connected for the metal pins 81 and 82 that connects external circuit, the upper surface of pedestal 3 is provided with boss 5; Boss 5 is along corresponding pedestal, i.e. the orientation of the metal pins 82 on the pedestal 3 be arranged in parallel.Metal pins 81 in the present embodiment on the pedestal 2 is drawn the primary side circuit, and the metal pins 82 on the pedestal 3 is drawn the secondary side circuit.

The outer edge of the boss 5 in the present embodiment and corresponding pedestal, namely the metal pins 82 setting-in faces of pedestal 3 are mutually concordant.

Better be assembled into together for the ease of magnetic core and the line bag that winds, the top of the boss 5 in the present embodiment is provided with the chamfering 6 towards drum stand 1.Cross section that can boss 5 is set to trapezoidal faces, and the hypotenuse of trapezoidal faces is towards drum stand 1; Perhaps, chamfering 6 is set to rounded corner.

The situation that has conductive parts for the lateral location of tackling transformer, the air gap and the creepage distance that guarantee these conductive parts and transformer are enough large, the upper surface of the pedestal 3 in the present embodiment is provided with baffle plate 4, baffle plate 4 and 5 vertical linking to each other of boss, baffle plate 4 and corresponding pedestal, namely the outer edge of pedestal 3 is mutually concordant.This baffle plate 4 can be selected square plate, and the square plate vertically-arranged is at the upper surface of pedestal 3.

Pedestal 2 in the present embodiment and the bottom of pedestal 3 all have wire casing 71,72.

In order to satisfy different safety required distances, increase pedestal 3 that can also be by a small margin, by base bottom wire casing 72, the direct kinking of the lead-out wire of three layer insulation wire also welds together with it to metal pins 82 behind the transformer winding, fly line processing without the three layer insulation wire lead-out wire, reduce the difficulty of technique, increased the reliability of welding; The embedded metal pins 82 that is installed on the pedestal 3, the pedestal 3 by increasing satisfies electric clearance and creepage distance requirement between the Transformer Winding.

Above-mentioned baffle plate 4 and boss 5 are slim, and material can be identical with pedestal.

The operation principle of the present embodiment transformer framework is:

By the boss 5 on the pedestal 3 and baffle plate 4, increased magnetic core of transformer to the shortest space length and the shortest insulating surface path between the secondary circuit conductive parts, can satisfy electric clearance and creepage distance requirement between magnetic core of transformer and the secondary circuit conductive parts, avoided realizing electric clearance and creepage distance requirement between magnetic core of transformer and the secondary circuit conductive parts at the outside coated insulation adhesive tape of magnetic core, reduce material cost and man-hour, improved the efficient of producing.

Above preferred embodiment is to require the design done in order to satisfy electric clearance between magnetic core of transformer and the secondary circuit conductive parts and creepage distance, and according to technical conceive of the present utility model, for satisfying transformer requirement to electric clearance and creepage distance under different situations, the utility model also can be made some variations, is exemplified below:

In order to satisfy electric clearance and the creepage distance requirement between magnetic core of transformer and the primary circuit conductive parts, the baffle plate 4 in the above preferred embodiment and boss 5 can be arranged on the upper surface of pedestal 2; And for needs increase simultaneously between magnetic core of transformer and the primary circuit conductive parts, electric clearance between magnetic core of transformer and the secondary circuit conductive parts and the situation of creepage distance, then can be simultaneously at the upper surface of pedestal 2 and pedestal 3 baffle plate 4 and boss 5 be set.In these two kinds of situations, the set-up mode of baffle plate 4 and boss 5 is identical with above preferred embodiment with principle, does not repeat them here.

Execution mode of the present utility model is not limited to this; under the above-mentioned basic fundamental thought of the utility model prerequisite; according to modification, replacement or the change to the utility model other various ways that content is made of the ordinary skill knowledge of this area and customary means, all within the utility model rights protection scope.

Claims

1. transformer framework, comprise two pedestals (2,3) and be arranged on drum stand (1) between two pedestals (2,3), be embedded with respectively on two pedestals (2,3) for the metal pins (81,82) that connects external circuit, it is characterized in that: the upper surface of at least one pedestal is provided with boss (5) in described two pedestals (2,3); Described boss (5) be arranged in parallel along the orientation of the metal pins on the corresponding pedestal.

2. transformer framework according to claim 1, it is characterized in that: the outer edge of described boss (5) is mutually concordant with the metal pins setting-in face of corresponding pedestal.

3. transformer framework according to claim 1, it is characterized in that: the top of described boss (5) is provided with the chamfering (6) towards drum stand (1).

4. transformer framework according to claim 3, it is characterized in that: the cross section of described boss (5) is trapezoidal faces, the hypotenuse of described trapezoidal faces is towards drum stand (1).

5. according to claim 1 to 4 each described transformer frameworks, it is characterized in that: the upper surface of at least one pedestal is provided with baffle plate (4) in described two pedestals (2,3), described baffle plate (4) and vertical linking to each other of boss (5).

6. transformer framework according to claim 5, it is characterized in that: described baffle plate (4) is mutually concordant with the outer edge of corresponding pedestal.

7. transformer framework according to claim 6, it is characterized in that: the bottom of described two pedestals (2,3) all has wire casing (71,72).