CN210516433U - Transformer - Google Patents

Abstract

The embodiment of the utility model discloses a transformer, which comprises a first framework, a second framework, a primary coil, a magnetic core, a first copper sheet, a second copper sheet and a base; the primary coils are wound on the outer surfaces of the first framework and the second framework; the first framework is provided with a first positioning hole, the second framework is provided with a second positioning hole, and the magnetic core is inserted into the first positioning hole and the second positioning hole; the first copper sheet is wrapped outside the primary coil of the first framework and connected with the base; the second copper sheet is wrapped outside the primary coil of the second framework and connected with the base; the magnetic core includes two magnetic core segments, each of which is inserted into the first positioning hole and the second positioning hole. The transformer replaces the secondary coil in the traditional transformer by the two copper sheets, so that the step of winding the secondary coil is omitted in the assembling process.

Description

Transformer

Technical Field

The utility model relates to a transformer.

Background

Generally, the driving voltage requirement of the electronic equipment is low, but the voltage provided by the external power supply is high, so that the transformer is adopted to rotate the power supply voltage to the voltage required by the electronic equipment. The transformer comprises a primary coil and a secondary coil, and the primary coil and the secondary coil are wound and fixed on a transformer framework. The existing transformer coil is generally assembled by adopting a manual winding mode, the efficiency is low, and the coil is wound by adopting a plurality of stranded round enameled copper wires, so that the wire diameter is too thick, and the transformer is large in size.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the embodiment of the utility model discloses a transformer, which comprises a first framework, a second framework, a primary coil, a magnetic core, a first copper sheet, a second copper sheet and a base; the primary coils are wound on the outer surfaces of the first framework and the second framework; the first framework is provided with a first positioning hole, the second framework is provided with a second positioning hole, and the magnetic core is inserted into the first positioning hole and the second positioning hole; the first copper sheet is wrapped outside the primary coil of the first framework and connected with the base; the second copper sheet is wrapped outside the primary coil of the second framework and connected with the base; the magnetic core includes two magnetic core segments, each of which is inserted into the first positioning hole and the second positioning hole. This transformer is through replacing the secondary coil among the traditional transformer with two copper sheets for the step of coiling secondary coil has been saved in the equipment process, has improved production efficiency, and simultaneously, the width of copper sheet is less than the coil width after the coiling is accomplished, thereby makes the transformer also can design into littleer volume, reduce cost, makes magnetic core assembling process more swift and the transformer is whole more stable through setting up of two magnetic core parts.

As a further improvement of the embodiment of the present invention, two ends of the first bobbin are respectively provided with a first limiting platform protruding outward, a first winding groove is formed between the two first limiting platforms, and the primary coil outside the first bobbin is wound at the first winding groove; the two ends of the second framework are provided with second limiting platforms protruding outwards, a second winding groove is formed between the second limiting platforms, and the primary coil outside the second framework is wound on the second winding groove. The arrangement ensures that the winding slot has high stability and is convenient for winding the primary coil.

As a further improvement, the base is provided with a mounting groove, first copper sheet with the second copper sheet all is provided with the copper sheet pin, the copper sheet pin card go into extremely in the mounting groove. Such an arrangement may utilize mounting slots to secure the copper sheet pins to increase the stability of the transformer.

As a further improvement of the embodiment of the utility model, the mounting groove is the rectangular channel. Such setting makes the mounting groove can with the cooperation of copper sheet pin, and the simultaneous processing degree of difficulty is little.

As a further improvement of the embodiment of the utility model, every the magnetic core part is provided with two projections, every two projections of magnetic core part are blocked respectively extremely in first locating hole with in the second locating hole. Such an arrangement may facilitate the fixation and stability of the magnetic core member.

As a further improvement of the embodiment of the present invention, the first positioning hole and the second positioning hole are square holes, and the shape of the convex column is adapted to the first positioning hole and the second positioning hole. The arrangement can facilitate processing and save processing time.

As a further improvement of the embodiment of the utility model, the magnetic ring is also included; the base is provided with a lug extending outwards, and the lug is provided with a clamping groove; the magnetic ring is placed on the convex sheet; the second copper sheet is provided with an extension sheet extending outwards, the extension sheet is provided with a butt joint pin, and the butt joint pin penetrates through the magnetic ring and is clamped into the clamping groove. The arrangement can conveniently fix the magnetic ring.

As a further improvement of the embodiment of the present invention, the first frame and/or the second frame are in a square tube shape. Such an arrangement makes the process more convenient and the skeleton more stable.

As a further improvement of the embodiment of the present invention, the first copper sheet and/or the second copper sheet is formed by stamping. The arrangement makes the processing more convenient, and the stability of the copper sheet is higher.

The transformer secondary coil of the embodiment of the utility model is directly replaced by the copper sheet, thereby avoiding the winding process, improving the assembly efficiency and having smaller volume; workers can directly assemble the copper sheet, the winding process in the traditional mode is omitted, the labor intensity of the workers is reduced, the assembling time is saved, the stability of the copper sheet is higher than that of a coil formed by traditional winding, and the quality of the transformer is improved.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is an exploded view of a transformer in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the transformer after being assembled in the embodiment of the present invention.

Fig. 3 is a sectional view of the transformer after assembly according to the embodiment of the present invention.

The names of the components indicated by the reference numerals in the drawings: 11-a first backbone; 111-a first locating hole; 112-a first stop; 113-a first winding slot; 12-a second backbone; 121-a second positioning hole; 122-a second stop; 13-a winding slot; 21-a primary coil outside the first bobbin; 22-a primary coil outside the second bobbin; 31-a first copper sheet; 32-a second copper sheet; 321-an extension piece; 322-docking pins; 33-copper sheet pins; 40-a base; 41-mounting groove; 42-a tab; 43-card slot; 51-a magnetic core component; 52-convex column; 60-magnetic ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-3, an embodiment of the present invention discloses a transformer, which includes a first bobbin 11, a second bobbin 12, a primary coil, a magnetic core, a first copper sheet 31, a second copper sheet 32, a base 40, and a magnetic ring 60; the primary coils are wound on the outer surfaces of the first framework 11 and the second framework 12; the first frame 11 is provided with a first positioning hole 111, the second frame 12 is provided with a second positioning hole 121, and the magnetic core is inserted into the first positioning hole 111 and the second positioning hole 121; the first copper sheet 31 is wrapped outside the primary coil of the first framework 11, and the first copper sheet 31 is connected with the base 40; the second copper sheet 32 is wrapped outside the primary coil of the second framework 12, and the second copper sheet 32 is connected with the base 40. The copper sheet forms an enclosure space by being connected with the base 40, and the framework and the primary coil arranged outside the framework are arranged in the enclosure space, so that the copper sheet is matched with the base 40 to form a secondary coil. The transformer of this embodiment is through replacing the secondary coil among the traditional transformer with two copper sheets for save the step of coiling secondary coil in the assembling process, improved production efficiency, simultaneously, the wire diameter of copper sheet is less than the coil after the coiling is accomplished, thereby makes the transformer also design into littleer volume, reduce cost.

In this embodiment, the first frame 11 and the second frame 12 have the same structure, so that the manufacturing process is convenient. In this embodiment, the first frame 11 and the second frame 12 have a square tubular shape, but in other embodiments, the first frame 11 or the second frame 12 may have a square tubular shape. In order to facilitate the winding of the primary coil, in this embodiment, two ends of the first bobbin 11 are respectively provided with a first limiting table 112 protruding outwards, a first winding slot 113 is formed between the two first limiting tables 112, and the primary coil 21 outside the first bobbin 11 is wound at the first winding slot 113; the both ends of second skeleton 12 all are provided with outside convex second spacing platform 122, two form the second wire winding groove between the spacing platform 122 of second, the outer primary coil 22 of second skeleton 12 is around establishing second wire winding groove department. Taking the first bobbin 11 as an example, the first limiting table 112 extending to the periphery is disposed at the edges of the two ends of the first positioning hole 111, the extending direction of the first limiting table 112 is perpendicular to the axis of the first positioning hole 111, and the extending length of the first limiting table 112 is not particularly limited as long as it can form an effect sufficient for limiting the primary coil. In this embodiment, the first limiting table 112 is shaped like a square frame, and is configured to match the square tube shape of the first bobbin 11, so that the limiting effect of the edge of the first winding slot 113 is uniformly arranged. In other embodiments, the stop may be configured in a circular ring, triangular shape, etc. to accommodate the shape of the frame. The second bobbin 12 has the same structure as the first bobbin 11. Preferably, in this embodiment, an outlet groove 13 is disposed at an edge of the first limiting table 112 and the second limiting table 122 to facilitate winding of the primary coil.

In this embodiment, the first copper sheet 31 and the second copper sheet 32 have a cross section of "Contraband", and both are provided with openings to form an enclosure space in combination with the base 40. The first framework 11 and the second framework 12 are arranged side by side, and the first copper sheet 31 and the second copper sheet 32 are also arranged side by side. In the present embodiment, the first copper sheet 31 and the second copper sheet 32 are formed by stamping, and in other embodiments, the first copper sheet 31 or the second copper sheet 32 may also be formed by stamping, and the stamping is performed so that a copper sheet with a stable shape can be formed, and the production efficiency is improved.

The base 40 is plate-shaped, the base 40 is provided with an installation groove 41, the first copper sheet 31 and the second copper sheet 32 are both provided with copper sheet pins 33, and the copper sheet pins 33 are clamped into the installation groove 41. The arrangement is such that the copper sheet can be quickly connected to the base 40. In this embodiment, the copper sheet pin 33 and the mounting groove 41 are in interference fit, so that the copper sheet and the base 40 are stably fixed. Preferably, in this embodiment, the mounting groove 41 is a rectangular groove, and since the two copper sheets are formed by stamping in this embodiment, the cross section of the copper sheet pin 33 is rectangular, such arrangement enables the mounting groove 41 and the copper sheet pin 33 to be correspondingly matched.

In this embodiment, the magnetic core includes two magnetic core members 51, and each of the magnetic core members 51 is inserted into the first positioning hole 111 and the second positioning hole 121. The transformer assembling process can be more convenient and faster due to the arrangement, the processing difficulty is reduced, and the transformer is more stable integrally. The two magnetic core members 51 are symmetrically disposed at both sides of the two bobbins and are inserted from both ends of the bobbins, respectively, to form a stable structure. In this embodiment, each of the magnetic core parts 51 is provided with two protruding columns 52, and the two protruding columns 52 of each of the magnetic core parts 51 are respectively inserted into the first positioning holes 111 and the second positioning holes 121. This arrangement allows the first bobbin 11 and the second bobbin 12 to be positioned after the two magnetic core members 51 are fitted. The convex column 52 of one magnetic core part 51 is clamped into the positioning hole and then contacts with the convex column 52 of the other magnetic core part 51. In this embodiment, the first positioning hole 111 and the second positioning hole 121 are square holes, and the shape of the protruding pillar 52 is adapted to the first positioning hole 111 and the second positioning hole 121, so that the protruding pillar 52 is rectangular so as to be adapted to the first positioning hole 111 and the second positioning hole 121.

In this embodiment, the base 40 is provided with a protruding piece 42 extending outwards, and the protruding piece 42 is provided with a locking groove 43; the magnetic ring 60 is placed on the tab 42; the second copper sheet 32 is provided with an extension sheet 321 extending outward, the extension sheet 321 is provided with a butt pin 322, and the butt pin 322 penetrates through the magnetic ring 60 and is clamped into the clamping groove 43. The docking pins 322 extend toward the base 40 to pass through the magnetic ring 60. With this arrangement, the magnetic ring 60 can be fixed to the base 40.

The embodiment of the utility model provides an in, secondary coil, also first copper sheet 31 with second copper sheet 32 adopts the direct stamping forming of copper bar, need not artifical coiling, and is efficient. Meanwhile, the pins of the first copper sheet 31 and the second copper sheet 32 are also directly punched and formed, and the surfaces are plated without soldering tin, so that the problems of high soldering point and short circuit of the coil caused by high soldering tin temperature are solved. The copper sheet in the embodiment is made of the flat copper strip, so that the space is saved, the utilization rate of the framework winding window can be improved, and the product volume can be reduced under the condition of the same output power.

The utility model discloses a transformer secondary directly adopts the copper sheet to replace, has avoided the coiling process, has promoted the packaging efficiency, and the volume is less simultaneously.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims (9)

1. A transformer, characterized by: the transformer comprises a first framework, a second framework, a primary coil, a magnetic core, a first copper sheet, a second copper sheet and a base; the primary coils are wound on the outer surfaces of the first framework and the second framework; the first framework is provided with a first positioning hole, the second framework is provided with a second positioning hole, and the magnetic core is inserted into the first positioning hole and the second positioning hole; the first copper sheet is wrapped outside the primary coil of the first framework and connected with the base; the second copper sheet is wrapped outside the primary coil of the second framework and connected with the base; the magnetic core includes two magnetic core segments, each of which is inserted into the first positioning hole and the second positioning hole.

2. A transformer according to claim 1, characterised in that: two ends of the first framework are respectively provided with a first limiting platform protruding outwards, a first winding groove is formed between the two first limiting platforms, and a primary coil outside the first framework is wound at the first winding groove; the two ends of the second framework are provided with second limiting platforms protruding outwards, a second winding groove is formed between the second limiting platforms, and the primary coil outside the second framework is wound on the second winding groove.

3. A transformer according to claim 1, characterised in that: the base is provided with the mounting groove, first copper sheet with the second copper sheet all is provided with the copper sheet pin, the copper sheet pin card is gone into to in the mounting groove.

4. A transformer according to claim 3, characterised in that: the mounting groove is a rectangular groove.

5. A transformer according to claim 1, characterised in that: each magnetic core part is provided with two convex columns, and the two convex columns of each magnetic core part are clamped into the first positioning hole and the second positioning hole respectively.

6. A transformer according to claim 5, characterised in that: the first positioning hole and the second positioning hole are square holes, and the shape of the convex column is matched with that of the first positioning hole and that of the second positioning hole.

7. A transformer according to claim 1, characterised in that: the magnetic ring is also included; the base is provided with a lug extending outwards, and the lug is provided with a clamping groove; the magnetic ring is placed on the convex sheet; the second copper sheet is provided with an extension sheet extending outwards, the extension sheet is provided with a butt joint pin, and the butt joint pin penetrates through the magnetic ring and is clamped into the clamping groove.

8. A transformer according to claim 1, characterised in that: the first framework and/or the second framework are in a square tube shape.

9. A transformer according to claim 1, characterised in that: the first copper sheet and/or the second copper sheet are formed in a punch mode.

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