CN2791413Y

CN2791413Y - Frame of electromagnetic coil

Info

Publication number: CN2791413Y
Application number: CN 200420114344
Authority: CN
Inventors: 胡梅宴
Original assignee: Zhejiang Sanhua Refrigeration Group Co Ltd
Current assignee: Zhejiang Sanhua Refrigeration Group Co Ltd
Priority date: 2004-12-14
Filing date: 2004-12-14
Publication date: 2006-06-28
Anticipated expiration: 2014-12-14

Abstract

The utility model relates to a skeleton structure of an electromagnetic coil. The utility model is characterized in that thermoplastic resins are manufactured into a skeleton body (1), a wrapping core (13) which is used for wrapping and manufacturing a winding and a terminal connecting part (15) which is extended to one side of the skeleton body are arranged on the skeleton body, and waterproof ribs (11, 14) are arranged on the end surface of the skeleton body. The utility model is provided with the waterproof ribs on the end surface of the skeleton body made of the thermoplastic resins, a skeleton and an encapsulated layer are well combined together to form a seal structure, therefore the utility model fundamentally solves a combining problem between an external encapsulated layer and the skeleton when the electromagnetic coil is injected and formed. Even if condensed water is arranged on the surface of the coil, the condensed water can not pass through the seal structure on the waterproof ribs to penetrate the interior of a coil winding in the process of using when the coil is in hot and cold alternation, and the coil can keep better water resistance and insulating performance.

Description

The skeletal structure of electromagnetic coil

[technical field]

The utility model relate to a kind of solenoid valve with the solenoid valve of commutation usefulness on skeletal structure, the especially air-conditioning of coil and the refrigerating plant, rotary type solenoid valve, flow control with the coil skeleton structure that uses on the solenoid valves such as solenoid valve.

[background technique]

The solenoid valve that uses on air-conditioning and refrigerating plant comprises valve body and coil, the object of its control is a refrigeration agent, the refrigerant medium that flows in the valve body is delivered to cold valve body and coil surface sometimes and produces dewfall and form condensed water, can generate heat when solenoid valve works in "on" position simultaneously, when being converted to the no electric circuit state and cool off and make solenoid valve cold and heat succeed each other middle use, so water resistence of this class electromagnetic valve coil, insulating properties necessarily requires well, causes the decreasing insulating of coil to cause inefficacy otherwise can add to cold and heat succeed each other because of the infiltration of surface condensation water in long-term the use.

The structure of existing electromagnetic valve coil is roughly as follows: a skeleton a, winding b along the coiling of backbone winding core, winding b and terminal c are welded together, outside skeleton a and winding b, be encapsulated layer d with the moulding resin molding and forming, this encapsulated layer d and skeleton a and winding b form a coil moulding, load onto magnetic conduction in this coil moulding outside again and form an electromagnetic valve coil with magnet case e or pole plate etc.

This coil is that two end faces of skeleton are substantially all sealed, be water resistence and the insulating properties that reaches coil, processing is coarse on the end face of skeleton, sometimes with being similar to the coated materials of adhesive in the skeleton end, impel combining between moulding resin encapsulated layer d and the skeleton 1, even so, be difficult to reach the desired binding effect, be difficult to guarantee the water resistence and the insulating properties of coil toward contact; In addition, be that whole skeleton end face is sealed when sealing with moulding resin, the height of single coil will increase like this, gap between magnet case and the coil winding is increased, have influence on magnetic property, the material consumption of single coil increases when sealing simultaneously, and cost of production is increased.

[model utility content]

The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the technological deficiency that existing skeleton exists on coil is made, a kind of skeletal structure of electromagnet coil is provided, to make water resistence, the good coil of insulating properties, and further make loop construction smaller and more exquisite, magnetic property also can improve, the encapsulating material that uses reduces, thereby reduces manufacture cost.For this reason, the utility model is taked following technical proposals:

A kind of skeletal structure of electromagnetic coil is characterized in that making the skeleton body with thermoplastic resin, on the skeleton body, be provided for the coiling winding around core and extend terminal joint to skeleton body one side, the end face of skeleton body is provided with waterproof rib.

Because thermoplastic resin can melt behind the fusing point that at high temperature reaches material, and can solidify after the cooling, this programme utilizes the above-mentioned characteristic of thermoplastic resin just and the end face of skeleton body is provided with waterproof rib, when outside skeleton and winding, being encapsulated layer with the moulding resin molding and forming, the moulding resin of high-temperature fusion contacts with the waterproof rib on the skeleton is surperficial, make the waterproof rib on the skeleton fusing take place and merge also cooling curing with moulding resin, make skeleton and encapsulated layer be combined together to form sealing configuration well, thereby the problem that combines between the encapsulated layer that has fundamentally solved electromagnetic coil outside when molding and forming and the skeleton, even coil surface has condensed water, in use coil is when colding and heat succeed each other, condensed water also can't penetrate into coil winding inside by the sealing configuration at waterproof rib place, makes coil keep good water resistence and insulating property.Obvious, the sectional shape of waterproof rib is hook-type, rectangle, trapezoidal and combined various geometrical shapies.

The utility model also comprises following additional technical feature:

Described waterproof rib is at least by offer the formed flange of groove on skeleton body end face, can only the flange of coil rack end face partly be sealed when sealing, coil height can be reduced, gap between magnet case and the coil winding is corresponding to be reduced, thereby improve the magnetic property of coil, and the consumption of the resin when reducing outer envelope, reduce the complexity of technology.

Described waterproof rib comprises the flange of giving prominence on skeleton body end face.

Described waterproof rib is provided with continuously, to reach better sealing effect.

The wide of described waterproof rib is 0.2～2.5mm, and height is 0.2～2mm, is more conducive to waterproof rib and melts when injection moulding.

Described skeleton body is integral structure or split-type structural.

The utility model is provided with waterproof rib by the end face of thermoplastic resin skeleton body, make skeleton and encapsulated layer be combined together to form sealing configuration well, thereby the problem that combines between the encapsulated layer that has fundamentally solved electromagnetic coil outside when molding and forming and the skeleton, even coil surface have condensed water, in use coil when colding and heat succeed each other, condensed water also can't penetrate into coil winding inside by the sealing configuration at waterproof rib place, makes coil keep good water resistence and insulating property; And make that to make loop construction smaller and more exquisite, and magnetic property also can improve, and the encapsulating material of use reduces, thereby reduces manufacture cost.

Below in conjunction with Figure of description the utility model is described further.

[description of drawings]

Fig. 1 is a kind of skeletal structure schematic representation of the present utility model.

Fig. 2,3 is for making the manufacturing process schematic representation of coil respectively with two kinds of skeletons of the present utility model.

Fig. 4 is for making the structural representation of coil with skeleton shown in Figure 2.

Fig. 5 is the structural representation that includes the electromagnetic coil that improves preceding skeleton.

[embodiment]

Embodiment one: skeleton as shown in Figure 1, be to make integral type skeleton body 1 with thermoplastic resin, on the skeleton body, be formed for the coiling winding around core 13 and extend terminal joint 15 to skeleton body one side, on the end face of skeleton body, offer groove 12 and form first flange 11, and second flange of giving prominence at skeleton body end face 14 is set, and two flanges are continuous, thus constitute waterproof rib, the width W of control waterproof rib is between 0.2～2.5mm, and height H is between 0.2～2mm.

Be the process of making coil with skeleton shown in Figure 1 as shown in Figure 2: at the coiling winding 2 on core 13 of skeleton 1, two terminal 3 plug-in mountings are fixed on the terminal joint 15, winding 2 ends and terminal 3 link to each other in modes such as soldering or spot welding, with moulding resin molding and forming outside skeleton 1 and winding 2 is encapsulated layer 4 (and not having encapsulated layer on the skeleton end face), load onto at last the magnet case 5 that magnetic conduction uses in the encapsulated layer outside and promptly form an electromagnetic valve coil, the structural relation between each component parts of this coil is seen Fig. 4.

Embodiment two: as shown in Figure 3, respectively at coiling winding 9a, the 9b on core of two skeleton 8a, 8b, line on the winding links to each other in modes such as soldering or spot welding with corresponding terminal 10a, 10b and forms coil block 11a, 11b, the outside of coil block adopts plastic resin material injection molded to constitute coil moulding B1, B2, to load onto a pair of magnetic conduction in the middle of the coil moulding with pole plate 12a, 12b and add connector assembly 13, load onto two magnetic conductions with shell 14a, 14b, between the shell with riveting or mode such as welding is fixed.

Claims

1, a kind of skeletal structure of electromagnetic coil, it is characterized in that making skeleton body (1) with thermoplastic resin, on the skeleton body, be provided for the coiling winding around core (13) and extend terminal joint (15) to skeleton body one side, the end face of skeleton body is provided with waterproof rib (11,14).

2, the skeletal structure of electromagnetic coil according to claim 1 is characterized in that described waterproof rib is at least by offer the formed flange of groove (12) (11) on skeleton body end face.

3, the skeletal structure of electromagnetic coil according to claim 1 and 2 is characterized in that described waterproof rib comprises the flange of giving prominence on skeleton body end face (14).

4, the skeletal structure of electromagnetic coil according to claim 1 is characterized in that described waterproof rib is provided with continuously.

5, the skeletal structure of electromagnetic coil according to claim 1 is characterized in that the wide 0.2～2.5mm of being of described waterproof rib, and height is 0.2～2mm.

6, the skeletal structure of electromagnetic coil according to claim 1 is characterized in that described skeleton body is integral structure or split-type structural.