CN214541866U - Transformer framework - Google Patents

Abstract

The utility model relates to a transformer framework, the transformer framework comprises a framework main body, a first end seat and a second end seat, wherein the first end seat and the second end seat are respectively extended and formed at two ends of the framework main body, the first end seat is provided with a plurality of first pins along the direction interval far away from the second end seat, the first pins are used for winding the initial ends of corresponding windings, the second end seat is provided with a plurality of second pins along the direction interval far away from the first end seat and is provided with metal pieces, the second pins are used for winding the tail ends of corresponding windings, the metal pieces are arranged at the side edges of the second end seat in the direction perpendicular to the central axis of the framework main body and are used for guiding the enameled wires on the framework main body to be bent twice by 90 degrees along the outer side wall of the second end seat to the corresponding second wiring pins, so as to avoid the phenomenon that the winding of the framework main body is over-full and runs.

Description

Transformer framework

Technical Field

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

Background

Transformers are widely used in today's society. The transformer framework is a main structure component of the transformer. The transformer framework is used for providing winding space for copper wires of the transformer and assembling the magnetic core. When the winding structure of transformer skeleton was too full, when the winding copper line was close to the biggest face in winding space or had arrived the biggest face on the transformer skeleton promptly, caused the card line structure of transformer skeleton itself to become invalid easily to cause the crossed wire and the problem that copper line roll-off wire winding groove appears, leaded to the winding copper line on the transformer skeleton to run the line promptly, influenced the automated production of transformer. Due to the structural limitation of the existing transformer framework, the problem of line running can be caused even if the line is hung manually. Meanwhile, according to different requirements, different requirements are required for the height of the transformer, and because the transformer is limited in height, a wire clamping structure which can change the overall size of the transformer cannot be added on a transformer framework, and the height of the original wire clamping structure cannot be increased.

The current transformer framework mainly adopts two modes to solve the problem of wire running according to different applicable types. One mode is that set up the hanging wire structure in the direction along the extending direction who is on a parallel with the magnetic core hole, this kind of mode is only applicable to the transformer of THT type (promptly through the transformer of perforation cartridge technique installation on the PCB circuit board), and application scope is less, and the hanging wire structure that increases moreover can increase the overall dimension of skeleton of transformer, can't satisfy skeleton of transformer's ann rule requirement, still has the production mould problem of skeleton of transformer simultaneously. Another way is to increase the height of the original wire-clamping feature to achieve wire hanging, which is suitable for SMT type transformers (i.e. transformers mounted on a PCB by surface mount technology), and this way also increases the overall size of the original transformer bobbin, which has die and safety issues. In general, in order to meet the safety requirements, the existing transformer has limited height requirements on a transformer framework, and the two solutions cannot meet the size requirements of the transformer framework and the requirements of automatic production of the transformer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer skeleton, transformer skeleton simple structure, small, can satisfy the requirement of ann's rule requirement and satisfy machine automated production's requirement.

The utility model provides a transformer framework, including the framework main part that is used for twining the enameled wire of corresponding winding and extending the first end seat and the second end seat that form in the both ends of the framework main part respectively, wherein the first end seat is provided with a plurality of first stitches along the direction interval that keeps away from the second end seat, first stitch is used for twining the initial end of corresponding winding, the second end seat is provided with a plurality of second stitches and is provided with the metalwork along the direction interval that keeps away from the first end seat, the second stitch is used for twining the end of corresponding winding, the metalwork is set up in the side of the second end seat with the direction that is perpendicular to the central axis of the framework main part, be used for when the coiling of the framework main part is overfull, guide the enameled wire on the framework main part to walk to the corresponding second stitch along the lateral wall of the second end seat with the mode of 90 degrees of twice buckling, so as to avoid the phenomenon that the winding of the framework main body is over-full and runs.

In an embodiment of the present invention, the second pin has a connection portion connected to the second end seat and a bending portion extending from the connection portion, the metal member is perpendicular to the connection portion and is located on the same plane as the connection portion, and the first pin has the same structure as the second pin.

In an embodiment of the present invention, the length of the first end seat is greater than or equal to the sum of the lengths of the second end seat and the metal member.

In an embodiment of the present invention, the first end base extends to form a plurality of first bosses, two adjacent first wire routing slots are formed between the first bosses to allow the corresponding winding to pass through the enameled wire drawn by the first pins and to be wound on the framework main body, the second end base extends to form a plurality of second bosses, two adjacent second wire routing slots are formed between the second bosses to allow the enameled wire drawn by the framework main body to pass through and to be wound and fixed on the corresponding second pins.

In an embodiment of the present invention, the corners of the first end seat, the first boss, the second end seat and the second boss are all rounded.

The utility model discloses an in an embodiment, the skeleton main part include the wrapping post and extend respectively formed in the baffle at wrapping post both ends, first end seat with the second end seat extends perpendicularly from corresponding the baffle, two form between the baffle and follow the wire winding groove of the circumference direction of wrapping post, the wire winding groove link up in first trough with the second trough.

In an embodiment of the present invention, the wrapping post is a cylinder structure and the wrapping post is provided with a magnetic core slot, and the partition board is an arch structure.

In an embodiment of the present invention, the frame body, the first end seat and the second end seat are integrally injection molded.

The utility model discloses still provide a preparation method of transformer skeleton on another hand, include the step:

the framework main body, the first end seat and the second end seat are integrally formed by injection molding, and glue is reduced on any one side of the second end seat in the injection molding process, so that the first end seat and the second end seat form an asymmetric structure;

arranging the first pin on the first end seat and arranging the second pin on the second end seat;

and arranging the metal piece on one side of the second end seat, subjected to glue reduction, in a direction perpendicular to the central axis of the framework main body, wherein the length of the first end seat is greater than or equal to the sum of the lengths of the second end seat and the metal piece.

The utility model discloses on the other hand still provides a transformer skeleton's hanging wire method, including the step:

winding the initial end of the corresponding winding on the first pin, and winding the enameled wire of the winding on the framework main body by penetrating the enameled wire of the winding through the first wiring groove;

enabling the enameled wire of the winding led out from the framework main body to penetrate through the second wiring groove and be wound on the corresponding second pin;

when the thickness of the enameled wire wound on the framework main body is larger than or equal to the width of the partition plate of the framework main body, the enameled wire wound on the framework main body behind the metal piece is guided by the metal piece to be bent for 90 degrees twice, and the enameled wire is routed to the corresponding second stitch along the outer side wall of the second end seat so as to avoid the phenomenon that the winding of the framework main body is over-full and the wire runs.

In an embodiment of the present invention, the wire hanging method of the transformer bobbin is implemented by machine automation.

Transformer framework is through setting up the mode of metalwork with the two 90 strings of enameled wire of the enameled wire of guide corresponding winding has been ensured transformer framework can not produce the problem of running the line, so that transformer framework's structure can satisfy machine automated production's requirement. And through right the mode that the second end base subtracts gluey moulding plastics, for the metalwork provides the assembly space, is being convenient for install when the metalwork ensured the metalwork can not increase transformer skeleton's overall dimension ensures transformer skeleton can not produce mould problem and ann rule problem. The utility model provides a simple structure, small and can satisfy the transformer skeleton of ann's rule requirement. In other words, the utility model provides a can be in not increasing the technical scheme of solving current transformer skeleton and running out the line problem under the condition of transformer skeleton's overall dimension.

In addition, because the metalwork perpendicular to connecting portion with the direction of the central axis of skeleton main part, just the position of metalwork does not increase transformer skeleton's size, consequently transformer skeleton both had been applicable to the transformer of THT type, also was applicable to the transformer of SMT type, promptly the utility model provides a transformer skeleton that the suitability is more extensive, can compromise limit for height requirement and machine automated production requirement simultaneously.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

Drawings

Fig. 1 is a schematic perspective view of the transformer bobbin according to a preferred embodiment of the present invention.

Fig. 2 is a schematic perspective view of the transformer bobbin according to the above preferred embodiment of the present invention at another viewing angle.

Fig. 3 is a schematic side view of the transformer bobbin according to the above preferred embodiment of the present invention.

Fig. 4 is a schematic top view of the transformer bobbin according to the above preferred embodiment of the present invention.

The reference numbers illustrate: a transformer bobbin 100; a skeleton body 10; a winding post 11; a separator 12; a winding slot 110; a magnetic core groove 111; a first end seat 20; a first boss 21; a first wiring duct 22; a first stitch 23; a second end seat 30; a second boss 31; a second wiring duct 32; a second stitch 33; a connecting portion 331; a bending section 332; a metal piece 40.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 4, a specific structure of a bobbin 100 according to a preferred embodiment of the present invention, a method for manufacturing the same, and a method for hanging a wire are specifically illustrated.

As shown in fig. 1 to 4, the transformer bobbin 100 includes a bobbin main body 10 for winding an enameled wire corresponding to a winding, and a first end base 20 and a second end base 30 respectively extending from two ends of the bobbin main body 10, wherein the first end base 20 is provided with a plurality of first pins 23 at intervals along a direction away from the second end base 30, the first pins 23 are used for winding an initial end of the corresponding winding, the second end base 30 is provided with a plurality of second pins 33 at intervals along a direction away from the first end base 20 and is provided with a metal piece 40, the second pins 33 are used for winding a terminal of the corresponding winding, the metal piece 40 is provided at a side of the second end base 30 in a direction perpendicular to a central axis of the bobbin main body 10, and is used for guiding the enameled wire on the bobbin main body 10 to bend for two times by 90 degrees along an outer sidewall of the second end base 30 to the corresponding second end base 30 when the bobbin main body 10 is fully wound with the wound wire 33, so as to prevent the bobbin body 10 from being overfull wound and running.

Specifically, the metal element 40 guides the enameled wires on the skeleton body 10 to route to the corresponding specific routing paths of the second pins 33, as shown in fig. 4.

Further, the second pin 33 has a connecting portion 331 connected to the second end socket 30 and a bending portion 332 extending from the connecting portion 331, the metal component 40 is perpendicular to the connecting portion 331 and is in the same plane as the connecting portion 331, and the first pin 23 has the same structure as the second pin 33, that is, the first pin 23 also has a connecting portion and a bending portion extending from the connecting portion.

It can be understood that, in this preferred embodiment of the present invention, the first pins 23 and the second pins 33 are both "Z" shaped structures, which is beneficial to ensure the distance between the transformer bobbin 100 and the circuit board when the transformer bobbin 100 is welded to the circuit board, so as to effectively reduce the heat transfer from the high temperature of the circuit board to the transformer bobbin 100, thereby ensuring the service life of the transformer bobbin 100.

It can also be understood that the purpose of making the metal piece 40 and the connecting portion 331 in the same plane is to: the metal piece 40 not only can play a role of hanging the wire, but also can meet the requirement of not damaging the wire. The arrangement position of the metal member 40 can be designed according to the requirement of a winding process, and the height of the metal member 40 can be adjusted according to the requirement so as to protect wires and realize automation.

In particular, the length of the first end seat 20 is equal to or greater than the sum of the lengths of the second end seat 30 and the metal piece 40. Specifically, for ensuring metal part 40 set up and not increase transformer skeleton 100's size, the utility model discloses second end seat 30's relevant position has been subtracted and has been glued, makes first end seat 20 with constitute asymmetric structure between the second end seat 30, so for metal part 40 provides the assembly space, makes transformer skeleton 100 can keep original size, satisfies the limit for height requirement to satisfy the ann rule requirement.

In other words, transformer skeleton 100 can enough satisfy the limit for height requirement, has avoided producing again and has run the line problem, consequently can satisfy machine automated production's requirement.

It should be noted that, in order to meet the market demand, the transformer bobbin 100 needs to be designed to have a structure with a small volume as much as possible and two symmetrical ends, so that the length of the first end base 20 is preferably equal to the sum of the lengths of the second end base 30 and the metal piece 40, so that the lengths of the two ends of the transformer bobbin 100 are consistent, and the market demand is better met.

In addition, because metalwork 40 is perpendicular to connecting portion 331 with the direction of the central axis of skeleton main part 10, just metalwork 40's position does not increase transformer skeleton 100's size, consequently transformer skeleton 100 both has been applicable to the transformer of THT type, also is applicable to the transformer of SMT type, promptly the utility model provides a more extensive, can compromise the transformer skeleton 100 that limit for height required and machine automated production required simultaneously.

Further, the first end sockets 20 extend at intervals to form a plurality of first bosses 21, a first wire routing groove 22 is formed between two adjacent first bosses 21 to allow an enameled wire led out from the first pins 23 of a corresponding winding to pass through and be wound on the bobbin main body 10, the second end sockets 30 extend at intervals to form a plurality of second bosses 31, and a second wire routing groove 32 is formed between two adjacent second bosses 31 to allow an enameled wire led out from the bobbin main body 10 to pass through and be wound and fixed on the corresponding second pins 33.

It can be understood that the winding sequence of the transformer bobbin 100 is as follows: the enameled wire of the winding is firstly wound on the first stitch 23, then passes through the first wiring groove 22 and then is wound on the framework main body 10, and then passes through the second wiring groove 32 and is wound on the corresponding second stitch 33, and through the wiring mode, the creepage distance of the outgoing wire of the winding can be ensured, and the transformer framework 100 can be ensured to meet the corresponding safety requirements.

Particularly, the corners of the first end base 20, the first boss 21, the second end base 30 and the second boss 31 are rounded to avoid the sharp corner from scratching the enameled wire of the winding, and at the same time, avoid the enameled wire of the winding from being broken due to the overlarge stress when the enameled wire is turned.

It should be noted that, in the preferred embodiment of the present invention, the transformer bobbin 100 includes four first pins 23 and four second pins 33, wherein the positions and the numbers of the first pins 23 and the first bosses 21 correspond to each other, and the positions and the numbers of the second pins 33 and the second bosses 31 correspond to each other. In some embodiments of the present invention, the number of the first pins 23, the first bosses 21, the second pins 33, and the second bosses 31 may be changed according to specific requirements, which is not limited by the present invention.

Further, the bobbin main body 10 includes a winding post 11 and partitions 12 respectively extending from two ends of the winding post 11, the first end seat 20 and the second end seat 30 vertically extend from the corresponding partitions 12, a winding slot 110 is formed between the two partitions 12 along a circumferential direction of the winding post 11, the winding slot 110 penetrates through the first routing slot 22 and the second routing slot 32 to allow a corresponding winding to pass through the first routing slot 22 and then wind around the winding post 11 in the winding slot 110, and the winding slot 110 penetrates through the second routing slot 32 and then winds around the corresponding second pin 33.

It can be understood that the width of the partition 12 limits the maximum winding space of the bobbin 100, that is, when the thickness of the enamel wire wound around the winding posts 11 is smaller than the width of the partition 12, the enamel wire is in a state of not reaching the maximum winding space of the bobbin 100, and when the thickness of the enamel wire wound around the winding posts 11 is greater than or equal to the width of the partition 12, the enamel wire is in a state of exceeding or reaching the maximum winding space of the bobbin 100.

It should be understood that when the winding of the transformer bobbin 100 is not close to or reaches the maximum winding space of the bobbin main body 10, the enameled wire of the winding of the transformer bobbin 100 may be wound on the second pin 33 after being routed from the second routing groove 32, and when the winding of the transformer bobbin 100 is close to or reaches the maximum winding space of the bobbin main body 10, the enameled wire of the winding of the transformer bobbin 100 is guided by the metal piece 40, and is wound on the corresponding second pin 33 after being routed along the second end seat 30 in a double 90-degree wire hanging manner, so that the wire running problem can be prevented.

In addition, the utility model discloses a metalwork 40 guides the hanging wire, consequently does not have the intensity problem.

It is worth mentioning that the wrapping post 11 is a cylinder structure and the wrapping post 11 is provided with a magnetic core slot 111, and the partition plate 12 is an arch structure.

In addition, it is worth mentioning that the frame main body 10, the first end seat 20 and the second end seat 30 are integrally injection molded, that is, the frame main body 10, the first end seat 20 and the second end seat 30 are all insulation structures. The first pin 23 and the second pin 33 are conductive members.

It is understood that the present invention also provides a method for manufacturing the transformer bobbin 100 in another aspect, which includes the steps of:

the framework main body 10, the first end seat 20 and the second end seat 30 are integrally formed by injection molding, and glue is reduced on any side of the second end seat 30 in the injection molding process, so that the first end seat 20 and the second end seat 30 form an asymmetric structure;

disposing the first pins 23 on the first end socket 20 and disposing the second pins 33 on the second end socket 30;

and arranging the metal piece 40 on the side of the second end seat 30, on which glue reduction is performed, in a direction perpendicular to the central axis of the skeleton body 10, wherein the length of the first end seat 20 is greater than or equal to the sum of the lengths of the second end seat 30 and the metal piece 40.

It will be appreciated that the addition of a hanging post to the front or back of the bobbin 100 increases the size of the bobbin 100. Therefore the utility model discloses a right the relevant position of second end platform subtracts gluey mode, makes transformer skeleton 100 reserves the setting the assembly space of metalwork 40 ensures can not increase transformer skeleton 100's overall dimension makes transformer skeleton 100 can enough satisfy the limit for height requirement, can not produce the problem of moving away the line yet, is favorable to realizing machine automated production.

It can also be understood that the present invention provides, in another aspect, a method for hanging wires on a transformer bobbin 100, comprising the steps of:

winding the initial end of the corresponding winding on the first stitch 23, and winding the enameled wire of the winding on the framework main body 10 through the first wiring slot 22;

winding the enameled wire of the winding led out from the bobbin main body 10 through the second wire slot 32 to the corresponding second pin 33;

when the thickness of the enameled wire wound on the skeleton main body 10 is greater than or equal to the width of the partition plate 12 of the skeleton main body 10, the enameled wire wound on the skeleton main body 10 at the back is guided by the metal piece 40 to be routed to the corresponding second pin 33 along the outer sidewall of the second end seat 30 in a manner of being bent twice by 90 degrees, so as to prevent the wire of the skeleton main body 10 from running due to overfilling.

It should be understood that the aforementioned steps in the method of hanging the transformer bobbin 100 are all implemented by machine automation.

In general, the object of the present invention is not to increase the height of the transformer bobbin 100, while also satisfying the automation of the production. Specifically, the transformer framework 100 ensures that the transformer framework 100 does not have the problem of wire running in a manner of arranging the metal piece 40 to guide the enameled wires of the corresponding windings to be hung at two angles of 90 degrees, so that the structure of the transformer framework 100 can meet the requirement of machine automatic production. And through right the mode that second end seat 30 subtracts gluey injection moulding, for metalwork 40 provides the assembly space, is being convenient for install metalwork 40 has been ensured simultaneously metalwork 40 can not increase transformer skeleton 100's overall dimension ensures transformer skeleton 100 can not produce mould problem and ann rule problem. Therefore, the utility model provides a simple structure, small and can satisfy transformer skeleton 100 of ann's rule requirement. In other words, the utility model provides a can solve the technical scheme of current transformer skeleton 100 line problem of running under the condition of not increasing transformer skeleton 100's overall dimension.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. A transformer framework is characterized by comprising a framework main body, a first end seat and a second end seat, wherein the framework main body is used for winding enameled wires corresponding to windings, and the first end seat and the second end seat are respectively formed by extending the enameled wires corresponding to the windings, the first end seat is provided with a plurality of first pins at intervals along the direction away from the second end seat, the first pins are used for winding the initial ends of the corresponding windings, the second end seat is provided with a plurality of second pins at intervals along the direction away from the first end seat and provided with metal pieces, the second pins are used for winding the tail ends of the corresponding windings, the metal pieces are arranged on the side edges of the second end seats in the direction perpendicular to the central axis of the framework main body and used for guiding the enameled wires on the framework main body to be wound to the corresponding second pins along the outer side walls of the second end seats in a 90-degree bending mode twice when the framework main body is fully wound, so as to avoid the phenomenon that the winding of the framework main body is over-full and runs.

2. The transformer framework of claim 1, wherein the second pin has a connection portion connected to the second end socket and a bending portion extending from the connection portion, the metal piece is perpendicular to the connection portion and is in the same plane as the connection portion, and the first pin has the same structure as the second pin.

3. The transformer skeleton of claim 2, wherein a length of the first end mount is equal to or greater than a sum of a length of the second end mount and the metal piece.

4. The transformer framework of claim 3, wherein the first end sockets extend at intervals to form a plurality of first bosses, the first pins correspond to the corresponding first bosses, a first routing slot is formed between every two adjacent first bosses to allow the enameled wires led out from the first pins of the corresponding windings to pass through and be wound on the framework main body, the second end sockets extend at intervals to form a plurality of second bosses, the second pins correspond to the corresponding second bosses, and a second routing slot is formed between every two adjacent second bosses to allow the enameled wires led out from the framework main body to pass through and be wound and fixed on the corresponding second pins.

5. The transformer skeleton of claim 4, wherein corners of the first end mount, the first boss, the second end mount, and the second boss are rounded.

6. The transformer bobbin of claim 4, wherein the bobbin body comprises a winding post and partition plates extending from two ends of the winding post, the first end seat and the second end seat extend perpendicularly from the corresponding partition plates, a winding slot is formed between the two partition plates along a circumferential direction of the winding post, and the winding slot penetrates through the first routing slot and the second routing slot.

7. The transformer bobbin of claim 6, wherein the winding posts are cylindrical and provided with core slots, and the partition is arch-shaped.

8. The transformer former of any one of claims 1-7, wherein the former body, the first end mount, and the second end mount are integrally injection molded.

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