CN218568625U - Transformer framework and transformer - Google Patents

Abstract

The utility model relates to a transformer technical field provides a transformer skeleton and transformer, transformer skeleton includes: the winding post, the upper limiting plate and the lower limiting plate; the winding post is of a hollow structure; a first side surface of the upper limiting plate is provided with secondary coil pins for winding a secondary coil, a second side surface of the upper limiting plate is provided with primary coil pins for winding a primary coil, and the first side surface and the second side surface are positioned on two opposite sides of the upper limiting plate; the lower limiting plate is arranged at the other end of the winding post and is parallel to the upper limiting plate; the cross section of the winding post is oval, and the secondary coil pin and the primary coil pin are respectively located in the end direction of the long axis of the oval. The utility model discloses can reduce transformer skeleton's size, accord with electronic product's frivolousization trend.

Description

Transformer framework and transformer

Technical Field

The utility model relates to a transformer technical field especially relates to a transformer skeleton and transformer.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like. With the continuous maturity of the third generation semiconductor material, the working frequency of the power supply is greatly improved, which paves the way for the miniaturization and automatic production of the transformer and brings design challenges.

With the trend of light weight, thinness, high frequency and automatic production of electronic products, new requirements are provided for the structure and strength of the transformer and the framework thereof, the existing transformer framework has a large design height and size, the breakage rate in the automatic production process is high, and how to obtain the simple, light weight and market competitiveness transformer framework is one of the important subjects of light weight and thinness of the transformer.

Disclosure of Invention

The utility model provides a transformer skeleton and transformer for solve the too massive problem of transformer skeleton among the prior art.

The utility model provides a transformer framework, include: the winding post, the upper limiting plate and the lower limiting plate are arranged on the upper end face of the winding post; the winding post is of a hollow structure; a first side surface of the upper limiting plate is provided with secondary coil pins for winding a secondary coil, a second side surface of the upper limiting plate is provided with primary coil pins for winding a primary coil, and the first side surface and the second side surface are positioned on two opposite sides of the upper limiting plate; the lower limiting plate is arranged at the other end of the winding post and is parallel to the upper limiting plate; the cross section of the winding post is oval, and the secondary coil pin and the primary coil pin are respectively located in the end direction of the long axis of the oval.

According to the utility model provides a pair of transformer skeleton, transformer skeleton still includes: and the shielding shell is buckled at one end of the winding post, is positioned between the first side surface and the second side surface and is used for reducing the electromagnetic interference between the primary coil and the secondary coil.

According to the transformer framework provided by the utility model, the first side surface of the upper limiting plate is provided with the first stiffened plate perpendicular to the upper limiting plate, the secondary coil pin is arranged on one side of the first stiffened plate deviating from the central axis of the winding post, and the secondary coil pin and the first stiffened plate are arranged in parallel; a second stiffened plate perpendicular to the upper limiting plate is arranged on the second side surface of the upper limiting plate, the primary coil pin is arranged on one side, away from the central axis of the winding post, of the second stiffened plate, and the primary coil pin and the second stiffened plate are arranged in parallel; the shielding shell is detachably arranged between the first stiffened plate and the second stiffened plate.

According to the utility model provides a pair of transformer framework, the shielding shell is the profile modeling design, the shape of shielding shell with first stiffened plate the second stiffened plate go up the shape looks adaptation in the space that the body of limiting plate was injectd.

According to the transformer framework provided by the utility model, a limiting boss is arranged on one side of the first stiffened plate facing the second stiffened plate; two side surfaces of the shielding shell corresponding to the first stiffened plate and the second stiffened plate are provided with open groove walls; the groove wall corresponding to the first stiffened plate is contacted with the end face of the limiting boss; and the groove wall corresponding to the second stiffened plate is contacted with the end face of the second stiffened plate.

According to the utility model provides a pair of transformer framework, with the extending direction of the cell wall that first stiffened plate corresponds with the extending direction looks adaptation of spacing boss, with the extending direction of the cell wall that second stiffened plate corresponds with the extending direction looks adaptation of second stiffened plate.

According to the transformer framework provided by the utility model, at least one pair of first fixing plates is fixedly arranged on the side surface of the second stiffened plate, which is away from the first stiffened plate, a gap exists between the adjacent first fixing plates, and the first fixing plates are used for fixing the primary coil pins; the second stiffened panel comprises: a first plate and a second plate; the first plate is arranged opposite to the first stiffened plate; the second plate is connected with the first plate and arranged between the adjacent first fixing plates.

According to the utility model provides a pair of transformer framework, first stiffened plate deviates from the fixed at least a pair of second fixed plate that is provided with in side of second stiffened plate, it is adjacent there is the clearance between the second fixed plate, the second fixed plate is used for fixing the secondary coil stitch.

According to the utility model provides a pair of transformer framework, the wrapping post is close to the primary coil stitch with the wall thickness at the both ends of secondary coil stitch is greater than the wrapping post is kept away from the primary coil stitch with the wall thickness of secondary coil stitch.

The utility model also provides a transformer, including above-mentioned arbitrary transformer skeleton.

The utility model provides a transformer skeleton and transformer through establishing the wrapping post into oval cylinder structure, and secondary coil stitch, primary coil stitch are located the tip direction of oval major axis respectively, are guaranteeing under the distance of secondary coil and primary coil and the prerequisite of wire winding volume, reduce the major axis length of the cross section of wrapping post to reduce transformer skeleton's width, accord with the frivolous trend of electronic product.

Drawings

In order to illustrate the technical solutions of the present invention or the prior art more clearly, the drawings used in the following embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is one of several axial views of a transformer bobbin provided by some embodiments of the present invention;

fig. 2 is a schematic structural diagram of a shielding case according to some embodiments of the present invention;

fig. 3 is a second schematic structural diagram of a shielding shell according to some embodiments of the present invention;

fig. 4 is a second axial view of a transformer bobbin according to some embodiments of the present invention;

fig. 5 is a bottom view of a transformer bobbin according to some embodiments of the present invention.

Reference numerals are as follows:

110: a winding post; 120: an upper limiting plate; 121: a secondary coil pin; 122: a primary coil pin; 123: a first side surface; 124: a second side surface; 125: a first stiffened plate; 1251: a second fixing plate; 126: a second stiffened plate; 1261: a first plate member; 1262: a second plate member; 1263: a first fixing plate; 127: a limiting boss; 130: a shield case; 140: a lower limiting plate.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The transformer bobbin and the transformer of the present invention will be described with reference to fig. 1 to 5.

Referring to fig. 1, the utility model provides a transformer skeleton, include: a winding post 110, an upper limiting plate 120 and a lower limiting plate 140.

The winding post 110 is a hollow structure, and the winding post 110 is used for winding a wire; the first side 123 of the upper limiting plate 120 is provided with secondary coil pins 121 for winding a secondary coil, the second side 124 of the upper limiting plate 120 is provided with primary coil pins 122 for winding a primary coil, and the first side 123 and the second side 124 are located on two opposite sides of the upper limiting plate 120; the lower limiting plate 140 is disposed at the other end of the winding post 110, and the lower limiting plate 140 is disposed in parallel with the upper limiting plate 120.

The cross section of the winding post 110 is an ellipse, and the secondary coil pin 121 and the primary coil pin 122 are respectively located in the end direction of the major axis of the ellipse.

In the related art, the winding posts 110 of the bobbin for the ultrahigh frequency transformer are all cylindrical structures, and in order to ensure the distance between the secondary coil and the primary coil, the diameter of the winding posts 110 is large, which results in large length and width of the bobbin, large overall volume, and non-compliance with the trend of light and thin electronic products.

The utility model provides a transformer skeleton through establishing wrapping post 110 into oval cylinder structure, and secondary coil stitch 121, primary coil stitch 122 are located the tip direction of oval major axis respectively, are guaranteeing under the distance of secondary coil and primary coil and the prerequisite of wire winding volume, reduce the major axis length of the oval cross section of wrapping post 110 to reduce transformer skeleton's size, accord with the frivolous trend of electronic product.

The first side surface 123 and the second side surface 124 are located on opposite sides of the upper limiting plate 120.

An edge portion of the upper limiting plate 120 extends toward the outer circumference of the winding post 110, that is, the primary coil pins 122 are disposed opposite to the secondary coil pins 121 on both sides of the upper limiting plate 120.

Wherein, the center of the upper limiting plate 120 is provided with a through hole, which is the same as the cross section of the hollow part of the winding post 110 and is correspondingly arranged.

The upper and lower restriction plates 120 and 140 each have a structure having a central position of a through hole having the same size as the oval size of the hollow portion of the winding post 110 and disposed correspondingly.

Edge portions of the upper and lower limiting plates 120 and 140 extend toward the outer circumference of the winding post 110, and the upper and lower limiting plates 120 and 140 define a winding space together with the side surfaces of the winding post 110.

In some embodiments, the primary coil pin 122 and the secondary coil pin 121 are perpendicular to the plane of the upper limiting plate 120, so as to facilitate the winding and fixing of the start/end wires of the primary and secondary coils.

It is understood that a plurality of pairs of the primary coil pins 122 and the secondary coil pins 121 may be provided according to actual requirements, that is, a plurality of pairs of the primary coil pins 122 and a plurality of pairs of the secondary coil pins 121 may be provided.

The limiting plate is disposed at an end of the winding post 110 and includes an upper limiting plate 120, the upper limiting plate 120 and the lower limiting plate 140 are both plate-shaped structures and are respectively fixed to two ends of the winding post 110, and the upper limiting plate 120 and the lower limiting plate 140 are parallel to each other.

In some embodiments, the minor axis of the ellipse is 8-9 mm in length.

It will be appreciated that the size of the oval may be set according to practical requirements.

For example, the winding posts 110 are changed from cylindrical with a diameter of 11.3mm to approximately 8.1 x 12mm of elliptical shape, which significantly reduces the width of the transformer bobbin.

As shown in fig. 2 and 3, the transformer bobbin further includes: a shield case 130; the shielding case 130 is fastened to one end of the winding post 110, and the shielding case 130 is located between the first side 123 and the second side 124, and the shielding case 130 is used for reducing electromagnetic interference between the primary coil and the secondary coil.

The shielding case 130 is used to reduce electromagnetic interference between the primary coil and the secondary coil, so as to form a shielding effect between the primary coil and the secondary coil.

In the related art, in order to better reduce or avoid electromagnetic interference and form the shielding effect between the primary coil and the secondary coil, a copper foil is wrapped between the primary coil and the secondary coil to serve as a shielding layer in a conventional winding manner. The coated copper foil can only be manually operated, and the efficiency is low.

In the present embodiment, by providing the shielding case 130, on one hand, the primary coil and the secondary coil are physically separated, so that the primary coil and the secondary coil can be separated by a short distance to avoid or reduce electromagnetic interference, thereby reducing the size of the transformer bobbin; on the other hand, the shielding case 130 is directly placed between the primary coil and the secondary coil, the operation is simple, and the production efficiency can be effectively improved.

Above, through the wrapping post 110 and the shielding shell 130 that set up the oval cylinder structure, can reduce the length and the width of transformer skeleton, reduced whole volume, accord with the frivolousization trend of electronic product.

Further, as shown in fig. 1, a first stiffened plate 125 perpendicular to the upper limiting plate 120 is disposed on the first side surface 123 of the upper limiting plate 120, the secondary coil pins 121 are disposed on one side of the first stiffened plate 125 departing from the central axis of the winding post 110, and the secondary coil pins 121 are disposed parallel to the first stiffened plate 125; a second reinforcing plate 126 perpendicular to the upper limiting plate 120 is arranged on the second side 124 of the upper limiting plate 120, the primary coil pins 122 are arranged on one side, away from the central axis of the winding column 110, of the second reinforcing plate 126, and the primary coil pins 122 are arranged in parallel with the second reinforcing plate 126; the shield case 130 is detachably provided between the first stiffened plate 125 and the second stiffened plate 126.

It is understood that the first rib 125 and the second rib 126 are disposed between the primary coil and the secondary coil, which can increase the physical isolation effect between the primary coil and the secondary coil, and further avoid or reduce the electromagnetic interference between the primary coil and the secondary coil.

Wherein. The shielding shell 130 is detachably buckled between the first stiffened plate 125 and the second stiffened plate 126, and the shielding shell 130, the first stiffened plate 125 and the second stiffened plate 126 can be connected in a plug-in manner or directly placed in a contact manner, so that the mounting and the dismounting are convenient.

Further, as shown in fig. 1, a limiting boss 127 is arranged on one side of the first stiffened plate 125 facing the second stiffened plate 126; two side surfaces of the shielding shell 130 corresponding to the first stiffened plate 125 and the second stiffened plate 126 are provided with open groove walls; the groove wall corresponding to the first stiffened plate 125 contacts with the end face of the limiting boss 127; the groove wall corresponding to the second stiffened plate 126 contacts the end face of the second stiffened plate 126.

The distance between the top end of the limiting boss 127 and the upper limiting plate 120 is smaller than the distance between the top end of the first rib plate 125 and the upper limiting plate 120.

Wherein, spacing boss 127 is used for the magnetic core on the one hand to place the position when placing the magnetic core spacing, places rocking of magnetic core, and on the other hand, the terminal surface of spacing boss 127 and the terminal surface contact of shielding shell 130 are convenient for shield shell 130's equipment.

Further, as shown in fig. 2 and 3, the shielding shell 130 is of a profile design, and the shape of the shielding shell 130 is adapted to the shape of the space defined by the bodies of the first rib plate 125, the second rib plate 126 and the upper limiting plate 120, so as to facilitate the positioning and installation of the shielding shell 130.

Specifically, the extending direction of the groove wall corresponding to the first stiffened plate 125 is matched with the extending direction of the limiting boss 127, and the extending direction of the groove wall corresponding to the second stiffened plate 126 is matched with the extending direction of the second stiffened plate 126.

Further, at least one pair of first fixing plates 1263 is fixedly arranged on the side of the second stiffened plate 126 away from the first stiffened plate 125, a gap exists between adjacent first fixing plates 1263, and the first fixing plates 1263 are used for fixing the primary coil pins 122; the second gusset 126 includes: a first plate 1261 and a second plate 1262; the first plate 1261 is disposed opposite to the first stiffened plate 125; second plate member 1262 is connected to first plate member 1261, and second plate member 1262 is disposed between adjacent first fixing plates 1263.

Here, the second plate 1262 is disposed between the adjacent first fixing plates 1263, that is, the second plate 1262 is disposed between the primary coil pins 122, so as to separate different groups of the primary coil pins 122.

In the related art, the primary coil pins 122 need to be spaced apart from each other, which increases the width of the transformer bobbin.

The utility model discloses a set up the second stiffened plate 126 of "T" type to locate second plate 1262 between the adjacent first fixed plate 1263, with separate the physics between the primary coil stitch 122 of different groups, reach promptly and realize keeping apart the effect with less distance, further reduce transformer skeleton's size.

It is understood that a plurality/plurality of pairs of first fixing plates 1263 are provided, and each first fixing plate 1263 is fixed with a corresponding primary coil pin 122. Since there is a gap between the adjacent first fixing plates 1263, there is a gap between each of the primary coil pins 122, and the start/end wires of the primary coil wound on the winding post 110 are correspondingly wound on the primary coil pins 122.

Meanwhile, the initial lead/the end lead of the primary coil passes through the first wire passing groove between the first fixing plates 1263, so that the mutual interference between the leads of the primary coil can be avoided, and the wiring in the winding process can be smooth.

Further, at least one pair of second fixing plates 1251 is fixedly disposed on the side of the first stiffened plate 125 away from the second stiffened plate 126, a gap exists between adjacent second fixing plates 1251, and the second fixing plates 1251 are used for fixing the secondary coil pins 121.

It is understood that a plurality/plurality of pairs of second fixing plates 1251 are provided, and each second fixing plate 1251 is fixed with a corresponding secondary coil pin 121. Since there is a gap between the adjacent second fixing plates 1251, there is a gap between each of the secondary coil pins 121, and the start/end wires of the secondary coil wound around the winding post 110 are correspondingly wound around the secondary coil pins 121.

Meanwhile, the initial lead/the end lead of the secondary coil passes through the first wire passing groove between the first fixing plates 1263, so that the mutual interference between the leads of the secondary coil can be avoided, and the wiring in the winding process can be smooth.

The second stiffened plate 126 and the second fixing plate 1251 may be integrally formed, or may be fixedly connected by plugging, fastening with bolts, or the like.

Specifically, the center positions of the first reinforcing plate 125 and the second reinforcing plate protrude towards the direction of the winding post 110, which is also beneficial to increasing the depth of the wire passing groove, is more beneficial to winding the primary coil/the secondary coil, and avoids the contact of wires between the coils.

Further, as shown in fig. 5, the wall thickness of the bobbin 110 near both ends of the primary coil pin 122 and the secondary coil pin 121 is greater than the wall thickness of the bobbin 110 far from the primary coil pin 122 and the secondary coil pin 121.

The utility model discloses improve the wall thickness of wrapping post 110, thicken in the both sides that wrapping post 110 is close to primary coil stitch 122, secondary coil stitch 121, increased wrapping post 110's intensity, can reduce the breakage rate when automatic wire winding, improve production efficiency and production quality.

The utility model provides a transformer framework, on the one hand through setting up wrapping post 110 to oval cylinder structure, secondary coil stitch 121, primary coil stitch 122 are located the tip direction of oval major axis respectively, under the prerequisite of guaranteeing secondary coil and primary coil's distance and winding volume, thereby reduce transformer framework's width, through setting up shielding shell 130, reduce transformer framework's length under the prerequisite of guaranteeing secondary coil and primary coil are insulating, accord with the frivolousness trend of electronic product; on the other hand, the production efficiency and the production quality are improved by improving the wall thickness of the winding post 110.

The utility model also provides a transformer, including above-mentioned arbitrary transformer skeleton.

The utility model provides a transformer, on the one hand through setting up wrapping post 110 to oval cylinder structure, secondary coil stitch 121, primary coil stitch 122 are located the tip direction of oval major axis respectively, under the prerequisite of guaranteeing secondary coil and primary coil's distance and winding volume, thereby reduce the width of transformer skeleton, through setting up shielding shell 130, reduce transformer skeleton's length under the prerequisite of guaranteeing secondary coil and primary coil are insulating, accord with the frivolousness trend of electronic product; on the other hand, the production efficiency and the production quality are improved by improving the wall thickness of the winding post 110.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A transformer skeleton, comprising:

a winding post, a hollow structure;

the first side surface is provided with secondary coil pins for winding a secondary coil, the second side surface is provided with primary coil pins for winding a primary coil, and the first side surface and the second side surface are positioned on two opposite sides of the upper limiting plate;

the lower limiting plate is arranged at the other end of the winding post and is parallel to the upper limiting plate;

the cross section of the winding post is oval, and the secondary coil pin and the primary coil pin are respectively located in the end direction of the long axis of the oval.

2. The transformer bobbin of claim 1, further comprising:

and the shielding shell is buckled at one end of the winding post, is positioned between the first side surface and the second side surface and is used for reducing the electromagnetic interference between the primary coil and the secondary coil.

3. The transformer skeleton of claim 2,

a first reinforcing plate perpendicular to the upper limiting plate is arranged on the first side face of the upper limiting plate, a secondary coil pin is arranged on one side, away from the central axis of the winding post, of the first reinforcing plate, and the secondary coil pin is arranged in parallel with the first reinforcing plate;

a second stiffened plate perpendicular to the upper limiting plate is arranged on the second side surface of the upper limiting plate, the primary coil pin is arranged on one side, away from the central axis of the winding post, of the second stiffened plate, and the primary coil pin and the second stiffened plate are arranged in parallel;

the shielding shell is detachably arranged between the first stiffened plate and the second stiffened plate.

4. The transformer skeleton of claim 3,

the shielding shell is of a profiling design, and the shape of the shielding shell is matched with the shape of a space defined by the bodies of the first stiffened plate, the second stiffened plate and the upper limiting plate.

5. The transformer skeleton of claim 3,

a limiting boss is arranged on one side, facing the second stiffened plate, of the first stiffened plate;

two side surfaces of the shielding shell corresponding to the first stiffened plate and the second stiffened plate are provided with open groove walls;

the groove wall corresponding to the first stiffened plate is contacted with the end face of the limiting boss;

and the groove wall corresponding to the second stiffened plate is contacted with the end face of the second stiffened plate.

6. The transformer bobbin of claim 5,

the extending direction of the groove wall corresponding to the first stiffened plate is matched with the extending direction of the limiting boss, and the extending direction of the groove wall corresponding to the second stiffened plate is matched with the extending direction of the second stiffened plate.

7. The transformer skeleton of claim 3,

at least one pair of first fixing plates are fixedly arranged on the side surface, away from the first reinforcing plate, of the second reinforcing plate, a gap exists between every two adjacent first fixing plates, and the first fixing plates are used for fixing pins of the primary coil;

the second stiffened panel comprises:

the first plate is arranged opposite to the first stiffened plate;

and the second plate is connected with the first plate and arranged between the adjacent first fixing plates.

8. The transformer skeleton of claim 3,

and at least one pair of second fixing plates are fixedly arranged on the side surface of the first stiffened plate, which is far away from the second stiffened plate, a gap is formed between every two adjacent second fixing plates, and the second fixing plates are used for fixing the secondary coil pins.

9. Transformer bobbin according to any of the claims 1 to 8,

the wall thickness of the two ends of the winding post close to the primary coil pin and the secondary coil pin is larger than the wall thickness of the winding post far away from the primary coil pin and the secondary coil pin.

10. A transformer, characterized by comprising a transformer skeleton according to any one of claims 1 to 9.

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