CN2387621Y

CN2387621Y - Circular transformer

Info

Publication number: CN2387621Y
Application number: CN 99215616
Authority: CN
Inventors: 王万勋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-15
Filing date: 1999-07-15
Publication date: 2000-07-12
Anticipated expiration: 2009-07-15

Abstract

The utility model relates to a circular transformer. In the utility model, the external of an iron core is coated with a layer of iron core insulation layer, the external of which is wound with a primary coil, and the external of primary pole coil is provided with a coil insulating cover which is composed of an upper cover body and a lower cover body which are combined; the top surface of the upper cover body is fixedly provided with two groups of turn coil stopping pins when the upper cover body is integrally formed, the wire end of the primary coil can be correspondingly connected with one group of turn coil stopping pins, which is arranged on the top surface of the upper cover body, the external of coil insulating cover is wound with a secondary coil, and the other group of turn coil stopping is connected with the wire end of the secondary coil so as to achieve the purpose of reducing volume and avoid wire breaking.

Description

Toroidal transformer

The utility model relates to a kind of toroidal transformer, particularly relates to the toroidal transformer that a kind of volume is little, vibration strength is good.

Toroidal transformer in the past, as Fig. 1, shown in Figure 2, it is the patent case of being invented before the inventor, its mainly be 2 outer cup unshakable in one's determination protect one by on,

lower cover

31,32 correspondences cover the core inductance cover of being formed 3, core inductance cover 3 outer winding with primary coil 4, protect by last in primary coil 4 outer covers again, lower cover 51,52 pairs cover the coil insulation cover of being formed 5, coil insulation cover 5 outer winding with secondary coil 6, secondary coil 6 outer covers again with outer cover 7, the line end of primary coil 4 and secondary coil 6 is just like the end of a thread, line tail end, be to be connected to core inductance cover 3 and coil insulation cover 5 end faces to sentence preset space length and add the vertical circle coil of wire set up in

34,35 and 561,562, the line end that makes coil is fixing, weld all very convenient quick; Stay pin as for each circle coil of wire and add the relative configurations design of setting up, on the whole be these circle coils of wire to be stayed

34,35 and 561,562 be fixedly arranged on respectively on the

key seat

33 and 56 that adds, and key seat the 33, the 56th is embedded at respectively on the

dovetail groove

30,54 default on its place insulating cover, and can further connect by convenient relevant device for assembling with it.

Because the article that toroidal transformer assembles according to this with occasion of using and institute are different, make how many characteristics of its requirement understands some difference, for example working as toroidal transformer is assemblied in the electric equipment that belongs to the stationary state use, or when being installed in for the mobile phone charger that be equipped with to use in automobile, toroidal transformer under two kinds of user modes just obvious difference to some extent of the characteristic that must possess, preceding paragraph toroidal transformer under user mode is not more considered the problem of volume size or sharp pounding, consequent under the user mode of Car Handfree Mobile Phone charger, volume-diminishedization or vibrations endurance for toroidal transformer, just become its important consideration factor, with regard to regard to the volume size, toroidal transformer was because must be at coil insulating cover 5 dovetail groove 30 relevant with moulding on the outer cover 7 in the past, 53,54 structures such as grade, for each circle coil of wire institute key seat 33 of plug-in mounting location according to this in the pin, 55,56 setting-ins location, these structures are not problems for bulky transformer, but the transformer little for volume, not only in the manufacturing moulding, comparatively bother, and increased the volume of integral ring-shaped transformer relatively, these situations all are that toroidal transformer is installed when being used in the product of paying attention to volume-diminishedization and must be improved.

In addition, for the vibrations endurance, usually must be on making by strict shatter test, can regular event to guarantee that it is long-term used under the frequent environment of vibrations still; But the design of toroidal transformer in the past, because primary coil 4 is set around core inductance cover 3 outsides that inside is coated with iron core 2, and iron core 2 has suitable weight, therefore in the process of shatter test, iron core 2 with suitable weight, the combination of core inductance cover 3 and primary coil 4, usually the coil insulation cover 5 with the outside has the gap, and under the macroseism unavoidablely for the coil insulation cover 5 outside coating it, can be with significantly moment inertia displacement relatively of generation, and since the end of a thread line tail end of primary coil 4 be directly welded in the circle coil of wire that is set firmly on the coil insulation cover 5 and stay pin, and the coil turn line is very thin, therefore relative inertia displacement of above-mentioned moment, the end of a thread of primary coil 4 will very easily be caused, line tail weld broken string causes integral ring-shaped transformer fault and can't normal operation.

Main purpose of the present utility model is, a kind of toroidal transformer is provided, it will stay directly one-body molded being fixedly arranged on the coil insulation cover of pin for elementary each metallic coil with the welding of secondary coil line end, and the line end that makes primary coil connects line via default buffering and is connected to its corresponding circle coil of wire indirectly on pin, and can provide buffering to avoid broken string when vibrations.

Another purpose of the present utility model is the layer insulating that directly is covered on its iron core surface, makes it possess insulation effect and obvious reduced volume.

The purpose of this utility model is achieved in that a kind of toroidal transformer, it mainly is to be provided with the core inductance layer in an outside unshakable in one's determination, the core inductance layer winds outward with primary coil, the primary coil outer cover protects a coil insulation cover of being made up of covering upper and lower cover body, the coil insulation cover winds outward with secondary coil, elementary and secondary coil is respectively drawn the line end of predetermined quantity, and each line end is connected to is scheduled to the upright two groups of circle coils of wire that are provided with in place in pin, and two groups of circle coils of wire correspond respectively to elementary and line end quantity and tool predetermined spacing secondary coil in the quantity of pin; Above-mentioned this group circle coil of wire that line end connected for secondary coil is stayed pin, is the upper outlet body end face that is fixedly arranged on the coil insulation cover; These two groups of circle coil of wire bottoms in the pin are the upper outlet body ejection formations in the coil insulation cover, the one-body molded upper outlet body end face that is fixedly arranged on.

Each line end of described primary coil all is connected in a buffering earlier and connects line one end, relend by each buffering connect line in addition end pass the one group of circle coil of wire that is connected in its correspondence behind the upper outlet body of coil insulation cover and stay on the pin.

It is to be pasted on the two-sided adhesive tape coplanar with fixed intervals in advance that each buffering that described each line end of primary coil is connected connects line, two-sided tape face in addition then adheres to the primary coil outside, and the upper outlet body of coil insulation cover offers that to connect line corresponding to most perforation that stretch through with each buffering, and each perforation is to connect this group circle coil of wire that line connects corresponding to each buffering of aforementioned confession to stay by the pin.

The bottom that described each circle coil of wire is stayed pin has a horizontal kink that is embedded in the upper outlet body of coil insulation cover.

The upper outlet body end face of described coil insulation cover has the thicker boss of a thickness, and the bottom of two groups of circle coil of wire pins just moulding is fixedly arranged in the boss, and two groups of circle coils of wire are stayed and are subjected to one to separate every rib between pin.

Described core inductance layer unshakable in one's determination outside is directly to be coated on through powder coating or hydrojet application with the insulation material unshakable in one's determinationly outsidely to be constituted.

Owing to the utility model employing said structure, can connect line than thick and tool around respectively cushioning of song by these lines footpaths provides the buffering effect of against shock to avoid broken string.There is not the gap between core inductance layer and iron core and reduces the thickness of core inductance layer, to reduce its volume.

Below by a most preferred embodiment and accompanying drawing toroidal transformer of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the part perspective exploded view of toroidal transformer in the past;

Fig. 2 is the combination generalized section of toroidal transformer in the past;

Fig. 3 is the perspective exploded view that the utility model embodiment toroidal transformer does not comprise primary coil and secondary coil;

Fig. 4 is that the utility model embodiment is provided with pile, gets and be provided with the schematic perspective view that buffering connects line around covering primary coil outside the core inductance layer;

Fig. 5 is that to connect line be one group of schematic diagram that is provided with that is pasted on rectangular two-sided tape at interval with three to the buffering of the utility model embodiment;

Fig. 6 is the sectional perspective enlarged diagram after the combination of the utility model embodiment toroidal transformer;

Fig. 7 is that each circle coil of wire bottom in the pin becomes the one-body molded generalized section that is embedded in the upper outlet body end face of coil insulation cover in folding part with a level among the utility model embodiment.

As shown in Figures 3 and 4, the utility model embodiment toroidal transformer, it mainly includes:

One iron core 81 is the becket circle body of a multi-turn winding shape.

One core inductance layer 82 directly is coated on 81 outer surfaces unshakable in one's determination by insulating material such as epoxy resin with powder coating or hydrojet application and is constituted.

One pile 83, its upper end has one and is butted on core inductance layer 82 end face proximal edge place and upwardly extended and supports portion 831, and frame supports portion 831 and has the corresponding extension 832 that extends and be butted on core inductance layer 82 end face in past both sides, to enlarge 83 scopes that are butted on core inductance layer 82 end face of whole pile, pile 83 lower ends have a flat part 833, borrow flat part 833 and be butted on core inductance layer 82 lateral surface and can borrow stickup a slice adhesive plaster 834 that it is pasted the location, and make whole pile 83 be fixedly arranged on the core inductance layer 82.

One primary coil 84, can use general enamelled wire, it is set around core inductance layer 82 outside, the a bit of frame that is wound in aforementioned pile 83 of the line end of primary coil 84 can be supported portion 831 upper ends, and paste solid with patch, locate and obtain appropriateness, can reserve this section the end of a thread for taking after the convenient follow-up spiral operation, the winding work that whole primary coil 84 is done is heavily to cover to be covered in core inductance layer 82 to required thousands of numbers of turn, only do simple signal among Fig. 4, in winding process because the frame of pile 83 supports the height of portion 831 exceeds primary coil 84 volumes to cover gross thickness many, therefore at every turn encircle to frame during around one when elementary coil 84 to portion 831 tops, will be automatically from frame support portion 831 tops glidingly the wire jumper cunning cross, unlikely lid covers frame to be supported portion 831 and reserves the end of a thread, the alleged line end of primary coil 84 herein, can be the end of a thread, line tail even be middle line end etc., therefore its line end quantity can be two, three or more, can optionally do different line end number designs, again, though above-mentionedly support portion 831 tops when elementary coil 84 carries out the frame that the unlikely lid of winding work covers pile 83 in core inductance layer 82 outside, yet, when elementary coil 84 when the frame that supports pile 83 supports the extension 832 that portion 831 extends toward both sides, can in the lump extension 832 constraints be positioned on the core inductance layer 82, make more strong fix of whole pile 83.

Most bar bufferings connect line 85, can use general external packets to be covered with insulated hull and the flexible lead of tool, its line footpath is same as the line end quantity that aforementioned primary coil 84 is preset than thick and quantity, connecting line 85 quantity with buffering in the present embodiment is that also to have three line ends 841 be that example explains for three, primary coil 84, wherein, more convenient for making on the dress group, three bufferings connect line 85 upper and lower ends and are made as the zinc-plated bare wire portion 851,852 of having dialled from insulated hull in advance.At fit on, article three, buffering lead 85 can be pasted on the two-sided adhesive tape 86 with fixed intervals in advance, therefore one group three spacings that respectively connect between line that connect line 85 are predetermined value, and under this location state as shown in Figure 4, each group buffering connects line 85 and can borrow two-sided tape 86 other faces to be pasted on primary coil 84 outsides and the location one, post with adhesive plaster more in case of necessity and strengthen locating effect in respectively connecting on the line 85, each line end 841 of the bare wire 852 that again each buffering is connected line 85 lower ends and primary coil 84 is connected as twisted wire, also solid welding in addition, certainly each line end 841 with cushion the bare wire portion 852 that connects line 85 finish be connected after, can be in addition the connecting portion lid that be sticked be covered and makes its location (not shown) with adhesive tape, this moment each buffering to connect line 85 upper ends be up to extend the end face suitable length that protrudes core inductance layer 82 and primary coil 84 assemblys; Again, in a large amount of manufacture processes, aforementioned three is that one group buffering connects line 85 and is posted solid on the two-sided tape 86 and can adopts mode as shown in Figure 5, connecting line 85 with the buffering of three parallel equidistant is one group, as long as bunchiness is pasted at interval on the two-sided tape 86 of a strip, is that one group buffering connects line 85 and cuts down and just can with three in regular turn when desire is used from the two-sided tape 86.

One coil insulation cover 90, as Fig. 3 and shown in Figure 6, it is by last,

lower cover

91,92 correspondences cover form, use cover to protect in above-mentioned primary coil 84 outsides, upper outlet body 91 is spaced apart at end face and unilateral copulation place to be provided with most perforation 911, each interval of 911 of boring a hole, quantity is that to connect line 85 corresponding with aforementioned each buffering, connect line 85 upper ends for each buffering and up pass upper outlet body 91 through each perforation 911, in addition, upper outlet body 91 end faces the perforation 911 slightly inner edge have the thickness boss 912 slightly thick than upper outlet body 91, boss 912 on the whole during cover body 91 ejection formations the just one-body molded vertical that is installed with in advance lay at interval and divide outer, two groups of inboard metallic circle coils of wire are stayed pin 913,914, therebetween and borrow and to convex with one on the boss 912 and slightly be intercepting in the centre of  font Boulez and locate every rib 916, make in the outer part this group circle coil of wire stay the installation position of pin 913 and quantity all bores a hole 911 corresponding with each, the bare wire portion 851 that connects line 85 upper ends with convenient each buffering is state as shown in Figure 6, passes the back volume by each perforation 911 and resides in its corresponding circle coil of wire and stay on the pin 913 and weld; Again, above-mentioned each circle coil of wire is stayed pin 913,914 as shown in Figure 7, borrows the bottom to have one section horizontal kink 915 that is embedded in the aforementioned boss 912, and provide with upper outlet body 91 one-body molded backs firm set firmly effect.

A level coil 93 as shown in Figure 6, is set around aforementioned coil insulation cover 90 outsides, and line ends 931,932 such as the end of a thread of secondary coil 93, line tail can be rolled up and reside in the position and stay pin 914 at this inboard group circle coil of wire of upper outlet body 91 end faces of coil insulating cover 90.

In the design, after the integral ring-shaped transformer group of the utility model embodiment synthesizes finished product shown in Figure 6, be to be used to cooperate the enclosure that is installed in the Car Handfree Mobile Phone charger, so overall structure of the utility model embodiment toroidal transformer, must not be covered with in the outside again as the set cover part of toroidal transformer in the past, just and these circle coil of wire pins 913,914 directly link or grafting with arrangements of electric connection.

Borrow the composition of above-mentioned member, the toroidal transformer of the utility model embodiment has following each advantage:

1. volume obviously dwindles: more simplify because each circle coil of wire is stayed the design of pin, just each circle coil of wire is stayed pin 913,914 in the present embodiment, owing to be when upper outlet body 91 ejection formations of coil insulating cover 90, just one-body molded upper outlet body 91 end faces that are installed in, and needn't be as the relative configurations such as moulding dovetail groove and key seat in addition of toroidal transformer in the past, therefore this design of present embodiment, can simplify on the one hand each circle coil of wire dress group in the pin the associated components of palpus, also can reduce the volume of integral ring-shaped transformer on the other hand relatively.In addition, because core inductance layer 82 directly overlayed on 81 outsides unshakable in one's determination with powder or hydrojet and constitute, therefore unlikely therebetween have a gap, and its shared volume can effectively obtain reduction naturally.

2. the vibrations endurance is preferable: because each line end 841 of primary coil 84 is to be connected in each buffering that sets firmly one with it earlier to connect line 85 bottoms, relend and connect line 85 upper ends by each buffering and pass the coil insulation cover one group of circle coil of wire that is welded in its correspondence after 90s and stay pin 913, therefore when carrying out shatter test, iron core 81 with suitable weight, core inductance cover 83, primary coil 84 and each buffering connect the combination of line 85, sacrifice one's life for respect to the moment inertia position that the coil insulation cover 90 that coats outside it is produced, be to put on structure to connect line 85 than respectively cushioning of strong and tool flexibility, natural energy has better vibration strength than very thin primary coil 84, and can provide buffering when bearing vibrations and avoid broken string.

Conclude every advantage that above-mentioned the utility model toroidal transformer is possessed, made toroidal transformer of the present utility model to be suitable for really and be installed on the product of characteristics such as paying attention to vibration strength, volume-diminishedization.

Take a broad view of above-mentioned, the utility model can provide a kind of toroidal transformer really, borrow its each volume to stay directly one-body molded being fixedly arranged on the coil insulation cover of pin, and the line end that makes primary coil connects the volume that line is connected to its correspondence indirectly via buffering and stays on the pin, and can the time provide buffering avoiding broken string in vibrations, and by iron core in the surface direct lining one layer insulating and can effectively reduce overall volume.

Claims

1. toroidal transformer, it mainly is to be provided with the core inductance layer in an outside unshakable in one's determination, the core inductance layer winds outward with primary coil, the primary coil outer cover protects a coil insulation cover of being made up of covering upper and lower cover body, the coil insulation cover winds outward with secondary coil, elementary and secondary coil is respectively drawn the line end of predetermined quantity, and each line end is connected to is scheduled to the upright two groups of circle coils of wire that are provided with in place in pin, and two groups of circle coils of wire correspond respectively to elementary and line end quantity and tool predetermined spacing secondary coil in the quantity of pin; Above-mentioned this group circle coil of wire that line end connected for secondary coil is stayed pin, is the upper outlet body end face that is fixedly arranged on the coil insulation cover;

It is characterized in that: these two groups of circle coil of wire bottoms in the pin are the upper outlet body ejection formations in the coil insulation cover, the one-body molded upper outlet body end face that is fixedly arranged on.

2. toroidal transformer as claimed in claim 1, it is characterized in that: each line end of primary coil all is connected in a buffering earlier and connects line one end, relend by each buffering connect line in addition end pass the one group of circle coil of wire that is connected in its correspondence behind the upper outlet body of coil insulation cover and stay on the pin.

3. toroidal transformer as claimed in claim 2, it is characterized in that: it is to be pasted on the two-sided adhesive tape coplanar with fixed intervals in advance that each buffering that each line end of primary coil is connected connects line, two-sided tape face in addition then adheres to the primary coil outside, and the upper outlet body of coil insulation cover offers that to connect line corresponding to most perforation that stretch through with each buffering, and each perforation is to connect this group circle coil of wire that line connects corresponding to each buffering of aforementioned confession to stay by the pin.

4. toroidal transformer as claimed in claim 1 is characterized in that: the bottom that each circle coil of wire is stayed pin has a horizontal kink that is embedded in the upper outlet body of coil insulation cover.

5. as claim 1 or 4 described toroidal transformers, it is characterized in that: the upper outlet body end face of coil insulation cover has the thicker boss of a thickness, just the bottom moulding of two groups of circle coil of wire pins is fixedly arranged in the boss, and two groups of circle coils of wire are stayed and are subjected to one to separate every rib between pin.

6. toroidal transformer as claimed in claim 1 is characterized in that: core inductance layer unshakable in one's determination outside is directly to be coated on through powder coating or hydrojet application with the insulation material unshakable in one's determinationly outsidely to be constituted.