CN219936815U

CN219936815U - Small power transformer

Info

Publication number: CN219936815U
Application number: CN202321040421.8U
Authority: CN
Inventors: 薛凯忠; 薛平忠; 薛伍
Original assignee: Dongguan Haoying Electronics Co ltd
Current assignee: Dongguan Haoying Electronics Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-10-31
Anticipated expiration: 2033-05-05

Abstract

The utility model relates to the technical field of transformers and discloses a small power transformer which comprises a transformer seat, wherein a distance adjusting screw rod is rotatably connected between the inner surfaces of the transformer seat, two steel core clamping shells with adjustable intervals are in transmission connection with the peripheral side surfaces of the distance adjusting screw rod, a positioning frame is fixedly arranged in the middle of the top surface of the transformer seat, steel core bodies are clamped between the two steel core clamping shells and the opposite surfaces of the positioning frame, coils are clamped on the surfaces of the two steel core bodies, and protective shells matched with the coils are hinged to the two sides of the steel core clamping shells. According to the utility model, through the arrangement of the distance adjusting screw rod and the steel core clamping shell, on one hand, the rapid disassembly and assembly of the components in the transformer can be realized, and on the other hand, the rapid disassembly structure can be used for effectively positioning the steel core body during the disassembly and assembly.

Description

Small power transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a small power transformer.

Background

The miniature transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil, a steel core and the like, and has the functions of voltage transformation and impedance transformation;

however, when the conventional small-sized transformer is used, the conventional small-sized transformer is generally fixed on the substrate through bolts, and when the small-sized transformer is damaged and needs to be disassembled, the small-sized transformer is inconvenient to replace or repair, so that improvement is needed, the problems in the prior art are solved, in the prior art, the patent document with the publication number of CN217933377U discloses a small-sized transformer convenient to disassemble, the small-sized transformer comprises a bottom plate, a mounting plate is arranged above the bottom plate, a damping mechanism is arranged between the bottom plate and the mounting plate, a base is fixed above the mounting plate, two clamping grooves are symmetrically formed in the base, supporting blocks are embedded and installed in the clamping grooves, when the small-sized transformer body is damaged and needs to be disassembled for repair or replacement, the small-sized transformer body can be disassembled conveniently and rapidly, a great amount of time is not needed to screw the bolts, and the disassembly efficiency is enhanced, on the one hand, on the other hand, the disassembly structure is difficult to ensure the magnetic circuit closing effect after the steel core body is connected, and on the other hand, the magnetic shielding and the magnetic protection of the coil are inconvenient to realize.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a small power transformer, which has the advantages of being capable of effectively positioning the steel core body during disassembly and assembly, and further guaranteeing the disassembly and assembly precision of the device.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a small-size power transformer, includes the ware seat, rotate between the internal surface of ware seat and be connected with the roll adjustment lead screw, the week side transmission of roll adjustment lead screw is connected with two interval adjustable steel core presss from both sides shell, the top surface middle part position fixed mounting of ware seat has positioning frame, two equal joint has the steel core body between the opposite surface of steel core presss from both sides shell and positioning frame, two equal joint of surface of steel core body has the coil, the both sides of steel core presss from both sides shell all articulate have with coil complex protective case, positioning frame's inside has seted up the location in groove and the outer groove of two symmetries settings respectively, the equal fixed mounting of inner wall in groove and the outer groove of location has the copper membrane with the laminating of steel core body.

As a preferable technical scheme of the utility model, the circumferential side surface of the distance-adjusting screw rod is symmetrically provided with a forward threaded part and a reverse threaded part, the circumferential side surfaces of the forward threaded part and the reverse threaded part are respectively in transmission connection with two steel core clamping shells, the end part of the distance-adjusting screw rod is fixedly provided with a transmission button, and the inside of the transmission button is fixedly provided with a cross transmission groove.

As a preferable technical scheme of the utility model, two symmetrically arranged guide sliding grooves are fixedly arranged in the tool holder, and the bottom surfaces of the two steel core clamping shells are respectively connected with the two guide sliding grooves in a sliding manner.

As a preferable technical scheme of the utility model, the steel core body comprises a group of steel chips which are distributed in a linear array and are mutually attached, one group of steel chips are combined into a whole through connecting pieces, and the steel chips are of an E-shaped structure.

As a preferable technical scheme of the utility model, the inner walls of the protective shell and the steel core clamping shell are adhered with electromagnetic shielding films, two electric connecting terminals are fixedly arranged on the surface of the coil, notch parts are fixedly arranged in the protective shell and correspond to the two electric connecting terminals, and the peripheral side surface of the coil is wrapped with insulating adhesive tape.

As a preferable technical scheme of the utility model, the semiconductor refrigeration piece is fixedly arranged in the steel core clamping shell, the refrigeration surface of the semiconductor refrigeration piece is attached to the steel core body, and the heat conducting surface of the semiconductor refrigeration piece faces away from the steel core body.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the arrangement of the distance adjusting screw rod and the steel core clamping shell, on one hand, the rapid disassembly and assembly of the components in the transformer can be realized, and on the other hand, the rapid disassembly structure can be used for effectively positioning the steel core body during the disassembly and assembly, so that the disassembly and assembly precision of the device is ensured.

2. According to the utility model, through the arrangement of the semiconductor refrigerating sheet, the high-efficiency heat dissipation of the transformer can be realized when the transformer works, and through the arrangement of the electromagnetic shielding film and the protective shell, the magnetic isolation and magnetic shielding protection of the transformer can be effectively realized, so that the influence on other power elements when the transformer works is reduced.

Drawings

FIG. 1 is a schematic diagram of a small power transformer according to the present utility model;

FIG. 2 is a schematic view of the structure of the middle positioning groove and the outer positioning groove of the present utility model;

FIG. 3 is a schematic view of the structure of the steel core body of the present utility model;

FIG. 4 is a schematic view of the structure of the steel core sandwich and the protective shell of the present utility model;

FIG. 5 is a schematic view of the structure of the coil and the connection terminals of the present utility model;

fig. 6 is a schematic structural view of the inventive holder and the distance adjusting screw.

In the figure: 1. a base; 2. a distance adjusting screw rod; 3. a steel core clamping shell; 4. a positioning frame; 5. a steel core body; 6. a coil; 7. a protective shell; 8. positioning a middle groove; 9. positioning an outer groove; 10. a copper film; 11. an electrical connection terminal; 12. a notch portion; 13. semiconductor refrigerating sheet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 6, the utility model provides a small power transformer, which comprises a base 1, wherein a distance-adjusting screw rod 2 is rotatably connected between the inner surfaces of the base 1, and two steel core clamping shells 3 with adjustable intervals are in transmission connection with the peripheral side surfaces of the distance-adjusting screw rod 2;

the semiconductor refrigeration piece 13 is fixedly arranged in the steel core clamping shell 3, the refrigeration surface of the semiconductor refrigeration piece 13 is attached to the steel core body 5, and the heat conduction surface of the semiconductor refrigeration piece 13 faces away from the steel core body 5;

when in use, the semiconductor refrigeration piece 13 is supplied with power by the electric connection terminal 11, and the semiconductor refrigeration piece 13 is used for carrying out heat dissipation operation on the steel core body 5;

the circumferential side surface of the distance adjusting screw rod 2 is symmetrically provided with a forward thread part and a reverse thread part, the circumferential side surfaces of the forward thread part and the reverse thread part are respectively in transmission connection with two steel core clamping shells 3, the end part of the distance adjusting screw rod 2 is fixedly provided with a transmission button, and the inside of the transmission button is fixedly provided with a cross transmission groove;

two symmetrically arranged guide sliding grooves are fixedly formed in the device seat 1, and the bottom surfaces of the two steel core clamping shells 3 are respectively connected with the two guide sliding grooves in a sliding manner;

through the arrangement of the forward thread part and the reverse thread part, the two steel core clamping shells 3 can synchronously approach each other or synchronously depart from each other, and through the mutual approach or departure of the two steel core clamping shells 3, the distance between the two steel core clamping shells 3 and the clamping strength of the two steel core clamping shells 3 to the steel core body 5 are rapidly changed;

the middle part of the top surface of the device seat 1 is fixedly provided with a positioning frame 4, steel core bodies 5 are clamped between the two steel core clamping shells 3 and the opposite surfaces of the positioning frame 4, coils 6 are clamped on the surfaces of the two steel core bodies 5, two electric connection terminals 11 are fixedly arranged on the surfaces of the coils 6, and the peripheral side surfaces of the coils 6 are wrapped with insulating tapes;

the steel core body 5 comprises a group of steel chips which are distributed in a linear array and are mutually attached in pairs, one group of steel chips are combined into a whole through connecting pieces, the steel chips are of an E-shaped structure, and the steel chips are made of silicon steel;

both sides of the steel core clamping shell 3 are hinged with a protective shell 7 matched with the coil 6;

the inner walls of the protective shell 7 and the steel core clamping shell 3 are adhered with electromagnetic shielding films, and notch parts 12 are fixedly arranged in the protective shell 7 and correspond to the positions of the two electric connection terminals 11;

the electromagnetic shielding films on the inner walls of the protective shell 7 and the steel core clamping shell 3 are arranged, so that the magnetic field generated during the work of the coil 6 is effectively shielded and isolated, and the magnetic influence on other elements in a power supply during the work of the power supply transformer is reduced;

the transformer can be effectively and physically protected through the arrangement of the protective shell 7;

a middle positioning groove 8 and two symmetrically arranged outer positioning grooves 9 are respectively formed in the positioning frame 4, and copper films 10 attached to the steel core body 5 are fixedly arranged on the inner walls of the middle positioning groove 8 and the outer positioning grooves 9;

through the setting of groove 8 and location external groove 9 in the location, can effectively inject the position of steel core body 5 on the one hand, on the other hand makes two steel core bodies 5 can fully laminate as an organic wholely when connecting to through the improvement of above-mentioned laminating effect to improve the formation effect of two steel core bodies 5 closed magnetic circuits.

The working principle and the using flow of the utility model are as follows:

instructions for expressing techniques or methods of operation;

during the equipment, two steel core bodies 5 are fixed in advance in locating frame 4, afterwards, two steel core presss from both sides shell 3 respectively by the outside of two steel core bodies 5 carry out the centre gripping to steel core body 5 under the driving action of pitch adjustment lead screw 2, after the centre gripping is stable, form the transformer then, when two steel core presss from both sides shell 3 motion, the protective case 7 turns up, after two steel core presss from both sides shell 3 motion finishes, protective case 7 drops and carries out physics and magnetism shielding protection to steel core body 5, when needs change steel core body 5 or coil 6, through the rotation of pitch adjustment lead screw 2, can accomplish the separation of steel core body 5 and coil 6 fast in turn.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A small power transformer, comprising a base (1), characterized in that: the novel steel core positioning device is characterized in that a distance adjusting screw rod (2) is rotationally connected between the inner surfaces of the device seat (1), two steel core clamping shells (3) with adjustable intervals are connected to the peripheral side face of the distance adjusting screw rod (2) in a transmission mode, positioning frames (4) are fixedly arranged in the middle of the top surface of the device seat (1), steel core bodies (5) are clamped between the opposite surfaces of the steel core clamping shells (3) and the positioning frames (4), coils (6) are clamped on the surfaces of the steel core bodies (5), protecting shells (7) matched with the coils (6) are hinged to the two sides of the steel core clamping shells (3), positioning middle grooves (8) and positioning outer grooves (9) which are symmetrically arranged are respectively formed in the positioning frames (4), and copper films (10) attached to the steel core bodies (5) are fixedly arranged on the inner walls of the positioning middle grooves (8) and the positioning outer grooves (9).

2. A miniature power supply transformer according to claim 1, characterized in that: the novel adjustable pitch screw is characterized in that a forward threaded portion and a reverse threaded portion are symmetrically arranged on the peripheral side face of the pitch adjusting screw (2), the peripheral side faces of the forward threaded portion and the reverse threaded portion are respectively in transmission connection with two steel core clamping shells (3), a transmission button is fixedly arranged at the end portion of the pitch adjusting screw (2), and a cross transmission groove is fixedly formed in the transmission button.

3. A miniature power supply transformer according to claim 2, characterized in that: two symmetrically arranged guide sliding grooves are fixedly formed in the device seat (1), and the bottom surfaces of the two steel core clamping shells (3) are respectively connected with the two guide sliding grooves in a sliding mode.

4. A miniature power transformer according to claim 3, wherein: the steel core body (5) comprises a group of steel chips which are distributed in a linear array and are mutually attached in pairs, one group of steel chips are combined into a whole through connecting pieces, and the steel chips are of an E-shaped structure.

5. A compact power transformer as recited in claim 4, further comprising: the inner walls of the protective shell (7) and the steel core clamping shell (3) are adhered with electromagnetic shielding films, two electric connecting terminals (11) are fixedly arranged on the surface of the coil (6), notch parts (12) are fixedly arranged in the protective shell (7) and correspond to the two electric connecting terminals (11), and the peripheral side face of the coil (6) is wrapped with insulating adhesive tape.

6. A miniature power transformer according to claim 5, wherein: the semiconductor refrigeration piece (13) is fixedly arranged in the steel core clamping shell (3), the refrigeration surface of the semiconductor refrigeration piece (13) is attached to the steel core body (5), and the heat conduction surface of the semiconductor refrigeration piece (13) is opposite to the steel core body (5).