CN201369211Y

CN201369211Y - Electronic transformer plastic housing with sealing groove

Info

Publication number: CN201369211Y
Application number: CNU2009200531024U
Authority: CN
Inventors: 欧应成; 蒋华安
Original assignee: FOSHAN NANHAI ZHANQING TOY Co Ltd
Current assignee: FOSHAN NANHAI ZHANQING TOY Co Ltd
Priority date: 2009-03-23
Filing date: 2009-03-23
Publication date: 2009-12-23
Anticipated expiration: 2019-03-23

Abstract

The utility model discloses an electronic transformer plastic housing with a sealing groove, which belongs to the technical field of electronic transformers, and the key point of the technical scheme thereof lies in that a box body and a bottom cover are included, wherein a lap of sealing groove is arranged at the joint part of the box body and the bottom cover, a ring-shaped bulge corresponding with the sealing groove is arranged on the bottom cover, the box body and the bottom cover are buckled through the sealing groove and the ring-shaped bulge, exhaust holes are arranged on the bottom cover, and exhaust holes are provided with seal plugs. The utility model has the advantages of simple structure, convenient assembly, excellent sealing performance and relatively low manufacturing cost, which is suitable for the electronic transformer.

Description

The electronic transformer plastic casing of band seal groove

Technical field

The utility model relates to a kind of electronic transformer, and more particularly, it relates to a kind of electronic transformer plastic casing with seal groove.

Background technology

Traditional electronic transformer normally directly directly is potted in transformation coil and electronic circuit board in the plastic casing with epoxy resin, electron pouring sealant etc., to reach purposes such as moulding, insulation, heat radiation and waterproof; There is following deficiency in this packaged type: (1) is because of will filling up the space between transformation coil and circuit and the plastic casing fully, thereby the use amount of potting compound is bigger, has improved the cost of raw material; (2), use the lower plastics of heat resistance to do shell usually, the intermediate temperature setting time that therefore needs to reduce oven temperature and prolong the envelope material, so not only power consumption but also reduced work efficiency based on the consideration of manufacturing cost; (3) electronic transformer that all uses epoxy encapsulation to produce can bring the too much electronic waste that is difficult to natural degradation, and environment is caused more pollution.

The utility model content

The technical problems to be solved in the utility model is the above-mentioned deficiency at prior art, and the electronic transformer plastic casing of a kind of simple in structure, easy to assembly, good seal performance, band seal groove that manufacturing cost is lower is provided.

The technical solution of the utility model is such: a kind of electronic transformer plastic casing with seal groove, form by box body and bottom, wherein, the joint portion of described box body and bottom is provided with a circle seal groove, on bottom, be provided with the annular protrusion that adapts with the sealing groove, by seal groove and annular protrusion snapping, be provided with steam vent on bottom between box body and the bottom, steam vent is provided with sealing plug.

Further, in the electronic transformer plastic casing of above-mentioned band seal groove, the wall thickness of described bottom wall ratio box body is little, and when temperature raise, the buffer board that bottom can be used as inner residual air expansion outwards expanded like this.

Further, in the electronic transformer plastic casing of above-mentioned band seal groove, the little step-shaped hole of imperial palace is good beyond the described steam vent, and the shape of sealing plug and steam vent is corresponding.

Further again, in the electronic transformer plastic casing of above-mentioned band seal groove, can also adopt to be threaded more convenient assembling and strengthen sealing property between described sealing plug and the steam vent.

After the utility model adopts said structure, by changing the plastic casing structure of electronic transformer, can in advance the transformation coil be encapsulated, and then put into plastic casing and carry out encapsulation process by bottom, under the prerequisite that guarantees overall sealing performance, can reduce the consumption of Embedding Material greatly, can reduce manufacturing cost and reduce electronic waste quantity, and have advantage simple in structure, easy to assembly.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;

Fig. 2 is the decomposition texture schematic diagram of the utility model specific embodiment;

Fig. 3 is the structural representation of box body in the utility model specific embodiment;

Fig. 4 is the vertical view of Fig. 3;

Fig. 5 is the structural representation of bottom in the utility model specific embodiment;

Fig. 6 is the upward view of Fig. 5;

Fig. 7 is that the A of Fig. 5 is to local enlarged diagram.

Among the figure: box body 1, seal groove 1a, bottom 2, annular protrusion 2a, steam vent 2b, sealing plug 2c.

Embodiment

Consult Fig. 1 to shown in Figure 7, the electronic transformer plastic casing of band seal groove of the present utility model, form by plastic box body 1 and plastic bottom cover 2, be provided with a circle seal groove 1a in the joint portion of box body 1 and bottom 2, on bottom 2, be provided with the annular protrusion 2a that adapts with sealing groove 1a, pass through seal groove 1a and annular protrusion 2a snapping between box body 1 and the bottom 2, on bottom 2, be provided with steam vent 2b, steam vent 2b is provided with sealing plug 2c, steam vent 2b in the present embodiment is the little step-shaped hole of outer imperial palace, and the shape of sealing plug 2c and steam vent 2b is corresponding; The wall thickness of bottom 2 wall ratio box bodys 1 is little, and when temperature raise, bottom 2 can be used as the buffer board that residual air expands in the box body 1 inner encapsulation process and outwards expands like this.

Also can be threaded easier formation hermetically-sealed construction when making up like this between sealing plug 2c of the present utility model and the steam vent 2b.

When the utility model specifically uses, electronic circuit board and packaged in advance transformation coil are put into box body 1, connect then into and out of power line and good seal, after just can in box body 1, filling silica flour (quartz sand) or pitch, in the seal groove 1a of box body 1, put fluid sealant, again the annular protrusion 2a of bottom 2 is snapped onto in the seal groove 1a and compress, on steam vent 2b, cover the i.e. assembling of sealing plug 2c and sealing at last and finish.

Claims

1. electronic transformer plastic casing with seal groove, form by box body (1) and bottom (2), it is characterized in that, described box body (1) is provided with a circle seal groove (1a) with the joint portion of bottom (2), on bottom (2), be provided with the annular protrusion (2a) that adapts with sealing groove (1a), by seal groove (1a) and annular protrusion (2a) snapping, be provided with steam vent (2b) on bottom (2) between box body (1) and the bottom (2), steam vent (2b) is provided with sealing plug (2c).

2. the electronic transformer plastic casing of band seal groove according to claim 1 is characterized in that, the wall thickness of described bottom (2) wall ratio box body (1) is little.

3. the electronic transformer plastic casing of band seal groove according to claim 1 is characterized in that, described steam vent (2b) is the little step-shaped hole of outer imperial palace, and sealing plug (2c) is corresponding with the shape of steam vent (2b).

4. according to the electronic transformer plastic casing of claim 1 or 3 described band seal grooves, it is characterized in that, be threaded between described sealing plug (2c) and the steam vent (2b).